Automatic wire feeding binding machine and wire feeding control method based on electrical signal

Abstract

The present invention discloses an automatic wire feeding binding machine and a wire feeding control method based on an electrical signal. The automatic wire feeding binding machine comprises a wire feeding nozzle, a driving wire feeding wheel, a driven wire feeding wheel, a wire feeding motor, a processor, and a reel for providing a binding wire. The wire feeding motor is controlled by the processor to drive the driving wire feeding wheel to rotate. Conductive portions are provided on at least one of the driving wire feeding wheel and the driven wire feeding wheel and on the wire feeding nozzle. The automatic wire feeding binding machine is provided with a wire feeding control circuit. The wire feeding control circuit comprises a first input terminal, a second input terminal and a first output terminal, wherein the first output terminal is connected to the processor, and the short circuiting between the first input terminal and the second input terminal triggers the first output terminal to output a first electrical signal. The conductive portion of the wire feeding nozzle is connected to the first input terminal. The conductive portion of any one of the driving wire feeding wheel and the driven wire feeding wheel is connected to the second input terminal. The present invention can realize automatic wire feeding based on an electrical signal, thereby improving the efficiency and safety of wire feeding of the binding machine.

Description

TECHNICAL FIELD

The present invention relates to the technical field of automatic binding machines, in particular to an automatic wire feeding binding machine and a wire feeding control method based on an electrical signal.

BACKGROUND TECHNOLOGY

The binding machine is a device for enwinding, fixing and tightening an object by bending a binding wire. As described in Patent CN 111706084 A, the binding machine includes a curve forming portion (i.e., a rounding mechanism), a twisting unit (i.e., a wire winding assembly) and other structures.

The binding machines on the market requires manual feeding of the binding wire to the wire feeding inlet between two meshed wire feeding wheels, the binding wire is then conveyed to the wire guiding mechanism through the movement of the wire feeding wheels, and the wire guiding mechanism guides the binding wire to the binding mechanism to complete a binding action. Since two wire feeding wheels of the automatic binding machine are meshed closely, it is very difficult to manually convey the binding wire directly to the wire guiding mechanism through the wire feeding wheels. Thus, as one scheme, the binding wire is held by hands, and its ends are conveyed to the lower part between two gears for butting. Then, by pressing the trigger of the binding machine, the electric control system in the binding machine drives the rotation of the driving gear to drive the binding wire to feed in order to realize feeding. In this scheme, since the rotation speed of the driving gear is high in the normal working state, it is easy to cause quick feeding of the binding wire to hurt the operator's hands, and it is impossible to control the feeding amount, so that it is easy to cause excessive feeding to lead to the waste of the wire during first binding, or insufficient feeding to lead to failed first binding. In another scheme, as described in Patent CN201680043004.5, the feeding gear set as the driven wheel can be a tension roller or the like, and the tension roller can be pushed away at a closer distance from the feeding gear set as the driving wheel by a desired pushing force, which belongs to separating the two wire feeding wheels by manually operating the mechanical structure, so that the user can easily convey the binding wire to the wire guiding mechanism through the passage formed after separating the wire feeding wheels. However, in this scheme, the operator needs to press with one hand to apply a pushing force and hold the wire with the other hand for feeding, resulting in defects of complex operation. Moreover, manual wire feeding is low in efficiency and low in feeding amount control accuracy, so that it is likely to lead to the waste of consumables.

SUMMARY OF THE PRESENT INVENTION

The technical problem to be solved by the present invention is to provide an automatic wire feeding binding machine and a wire feeding control method based on an electrical signal, which can realize automatic wire feeding and improve the efficiency and safety of wire feeding of the binding machine.

To solve the above technical problem, in a first aspect of the present invention, an automatic wire feeding binding machine based on an electrical signal is disclosed, the automatic wire feeding binding machine comprises a wire feeding nozzle, a driving wire feeding wheel, a driven wire feeding wheel, a wire feeding motor, a wire guiding mechanism, a processor, and a reel for providing binding wire, the wire feeding motor is controlled by the processor to drive the driving wire feeding wheel to rotate; wherein,

Conductive portions are provided on at least one of the driving wire feeding wheel and the driven wire feeding wheel and on the wire feeding nozzle;

The automatic wire feeding binding machine is provided with a wire feeding control circuit, and the wire feeding control circuit comprises a first input terminal, a second input terminal and a first output terminal, the first output terminal is connected to the processor, wherein, the short circuiting between the first input terminal and the second input terminal triggers the first output terminal to output a first electrical signal;

The conductive portion of the wire feeding nozzle is connected to the first input terminal;

The conductive portion of any one of the driving wire feeding wheel and the driven wire feeding wheel is connected to the second input terminal.

As an optional implementation, in the first aspect of the present invention, the wire feeding control circuit further comprises a third input terminal and a second output terminal, the second output terminal is connected to the processor, and the short circuiting between the second input terminal and the third input terminal triggers the second output terminal to output a second electrical signal;

The wire guiding mechanism is provided with a conductive portion, and this conductive portion is connected to the third input terminal.

As an optional implementation, in the first aspect of the present invention, in the wire feeding control circuit, one of the first input terminal, the second input terminal and the third input terminal is connected to a first electrode, while the other two thereof are connected to a second electrode; and the polarity of the first electrode is opposite to that of the second electrode.

As an optional implementation, in the first aspect of the present invention, the first electrical signal and/or the second electrical signal is manifested in a TTL level jump mode.

As an optional implementation, in the first aspect of the present invention, the automatic wire feeding binding machine further comprises a switch, a reel hatch cover and a wire feeding and binding switching circuit, wherein,

The wire feeding and binding switching circuit comprises a fourth input terminal, a fifth input terminal and a third output terminal, the third output terminal is connected to the processor, and the short circuiting between the fourth input terminal and the fifth input terminal triggers the third output terminal to output a third electrical signal;

The opening or closing of the reel hatch cover triggers the switch to be turned on or off, and both ends of the switch are connected to the fourth input terminal and the fifth input terminal, respectively.

As an optional implementation, in the first aspect of the present invention, the binding wire travel distance between the conductive portion of any one of the driving wire feeding wheel and the driven wire feeding wheel and the conductive portion of the wire feeding nozzle is configured to be 2 to 15 mm; and/or

The binding wire travel distance between the conductive portion of any one of the driving wire feeding wheel and the driven wire feeding wheel and the conductive portion of the wire guiding mechanism is configured to be 2 to 10 mm.

In a second aspect of the present invention, a wire feeding control method is disclosed, wherein, the method is applied to the automatic wire feeding binding machine described above, the method comprises:

Upon receiving the first electrical signal, the processor drives the driving wire feeding wheel to rotate for a preset number of turns at a preset rotation speed, so as to advance the binding wire that touches the gear meshing place between the driving wire feeding wheel and the driven wire feeding wheel toward the wire guiding mechanism by a preset feeding amount.

As an optional implementation, in the second aspect of the present invention, the method further comprises:

Upon receiving the second electrical signal, the processor controls the driving wire feeding wheel to stop advancing the binding wire.

As an optional implementation, in the second aspect of the present invention, the preset rotation speed is configured to be insufficient to hurt hands in the process of advancing the binding wire.

As an optional implementation, in the second aspect of the present invention, the method further comprises:

Upon receiving the third electrical signal, the processor executes the operation of driving the driving wire feeding wheel to rotate for the preset number of turns at the preset rotation speed if the first electrical signal is received;

When the third electrical signal is not received, the processor does not receive the first electrical signal.

Compared with the prior art, the implementations of the present invention have the following beneficial effects.

In the implementations of the present invention, using the short circuiting between the conductive portions of the wire feeding nozzle and the wire feeding wheel caused by binding wire to trigger the control circuit to output an electrical signal, so that the processor controls the driving wire feeding wheel to feed the wire according to the electrical signal, and it can be automatically sensed whether the position of the binding wire arrives at the wire feeding nozzle, and whenit arrives, the wire feeding action is performed automatically. Thus, the accuracy and efficiency of determining whether the binding wire is located at the start position for wire feeding can be improved, and automatic wire feeding can be realized. Compared with manually feeding the wire directly or opening the wire feeding wheel by pressing a button and then manually feeding the wire, the efficiency and safety of wire feeding of the binding machine can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS

To describe the technical solutions in the embodiments of the present invention more clearly, the drawings to be used in the description of the embodiments will be briefly described below. Apparently, the drawings in the following description are only some of the embodiments of the present invention, and a person of ordinary skill in the art can obtain other drawings according to these drawings without paying any creative effort.

FIG. 1 is a schematic structure diagram of an automatic wire feeding binding machine according to an embodiment of the present invention;

FIG. 2 is a schematic structure diagram of a wire feeding control circuit according to an embodiment of the present invention;

FIG. 3 is a schematic structure diagram of an automatic wire feeding binding machine when the reel hatch cover is opened, according to an embodiment of the present invention;

FIG. 4 is a schematic structure diagram of a wire feeding and binding switching circuit according to an embodiment of the present invention;

FIG. 5 is a schematic structure diagram of another automatic wire feeding binding machine according to an embodiment of the present invention;

FIG. 6 is a schematic flowchart of a wire feeding control method according to an embodiment of the present invention;

FIG. 7 is a schematic structure diagram of a wire feeding nozzle according to an embodiment of the present invention;

FIG. 8 is a sectional view of the wire feeding nozzle according to an embodiment of the present invention;

FIG. 9 is a schematic structure diagram of a wire guiding mechanism according to an embodiment of the present invention; and

FIG. 10 is a sectional view of the wire guiding mechanism according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PRESENT INVENTION

To make those skilled in the art better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some but not all of the embodiments of the present invention. All other embodiments obtained on the basis of the embodiments in the present invention by a person of ordinary skill in the art without paying any creative effort shall fall into the protection scope of the present invention.

Embodiment 1

With reference to FIG. 1, FIG. 1 is a schematic structure diagram of an automatic wire feeding binding machine based on an electrical signal according to an embodiment of the present invention. The automatic wire feeding binding machine comprises a wire guiding mechanism 1, a driven wire feeding wheel 2, a driving wire feeding wheel 3, a wire feeding nozzle 4, a reel 6 for providing binding wire 5, a wire feeding motor 7 and a processor 8, the wire feeding motor 7is controlled by the processor 8 to drive the driving wire feeding wheel 3 to rotate, wherein,

Conductive portions are provided on at least one of the driving wire feeding wheel 3 and the driven wire feeding wheel 2 and on the wire feeding nozzle 4;

The automatic wire feeding binding machine is provided with a wire feeding control circuit, and the wire feeding control circuit comprises a first input terminal, a second input terminal and a first output terminal, the first output terminal is connected to the processor 8, wherein, the short circuiting between the first input terminal and the second input terminal triggers the first output terminal to output a first electrical signal;

The conductive portion of the wire feeding nozzle 4 is connected to the first input terminal;

The conductive portion of any one of the driving wire feeding wheel 3 and the driven wire feeding wheel 2 is connected to the second input terminal.

In the embodiment of the present invention, as shown in FIG. 1, the wire feeding motor 7 is electrically connected to the processor 8, the output end of the wire feeding motor 7 is a gear meshed with the driving wire feeding wheel 3, and the wire feeding motor 7 drives this gear to rotate the driving wire feeding wheel 3.

In the embodiment of the present invention, using the binding wire short circuiting between the conductive portions of the wire feeding nozzle and the wire feeding wheel caused by binding wire to trigger the control circuit to output an electrical signal, so that the processor controls the driving wire feeding wheel to feed the wire according to the electrical signal, and it can be automatically sensed whether the position of the binding wire arrives at the wire feeding nozzle, and when it arrives, the wire feeding action is performed automatically. Thus, the accuracy and efficiency of determining whether the binding wire is located at the wire feeding starting position can be improved, and automatic wire feeding can be realized. Compared with manually feeding the wire directly or opening the wire feeding wheel by pressing a button and then manually feeding the wire, the efficiency and safety of wire feeding of the binding machine can be improved.

In an optional embodiment, the wire feeding control circuit further comprises a third input terminal and a second output terminal, the second output terminal is connected to the processor 8, and the short circuiting between the second input terminal and the third input terminal triggers the second output terminal to output a second electrical signal;

The wire guiding mechanism 1 is provided with a conductive portion, and this conductive portion is connected to the third input terminal.

In this optional embodiment, upon receiving the second electrical signal, the processor 8 controls the driving wire feeding wheel 3 to stop advancing the binding wire 5.

In this optional embodiment, the binding wire arrives at the wire guiding mechanism to cause short circuiting between the conductive portions of the wire guiding mechanism and the wire feeding nozzle so as to trigger the control circuit to output an electrical signal, so that the processor stops the driving wire feeding wheel from feeding the wire according to this electrical signal, and it can be determined whether the binding wire arrives at the wire guiding mechanism. Thus, the accuracy and efficiency of determining whether the binding wire arrives at the wire guiding mechanism is improved, it is beneficial to further complete the automatic wire feeding process, and the efficiency of automatic wire feeding is improved.

In still another optional embodiment, in the wire feeding control circuit, one of the first input terminal, the second input terminal and the third input terminal is connected to a first electrode, while the other two thereof are connected to a second electrode; and the polarity of the first electrode is opposite to that of the second electrode.

In this optional embodiment, for example, FIG. 2 shows a schematic diagram of the wire feeding control circuit. In this wire feeding control circuit JP1, 1 denotes the first input terminal, 2 denotes the second input terminal and 3 denotes the third input terminal. This circuit further comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a capacitor C1, a capacitor C2, a zener diode DZ1, a zener diode DZ2, a power source and a grounding terminal. The first input terminal is connected to the grounding terminal, and is connected to the first output terminal through the capacitor C1 and is also connected to the second output terminal through the capacitor C2; the second input terminal is connected to the power source through the resistor R2, and is connected to the first output terminal through the resistor R4; and, the third input terminal is connected to the power source through the resistor R1, and is connected to the second output terminal through the resistor R3.

In yet another optional embodiment, the first electrical signal and/or the second electrical signal is manifested in a TTL level jump mode.

In yet another optional implementation, as shown in FIG. 3, the automatic wire feeding binding machine further comprises a switch 9, a reel hatch cover 10 and a wire feeding and binding switching circuit, wherein,

The wire feeding and binding switching circuit comprises a fourth input terminal, a fifth input terminal and a third output terminal, the third output terminal is connected to the processor 8, and the short circuiting between the fourth input terminal and the fifth input terminal triggers the third output terminal to output a third electrical signal;

The opening or closing of the reel hatch cover 10 triggers the switch 9 to be turned on or off, and both ends of the switch 9 are connected to the fourth input terminal and the fifth input terminal, respectively.

Optionally, the wire feeding and binding switching circuit may comprises a first resistor, a second resistor, a first capacitor, a power source and a grounding terminal, wherein, the first input terminal is connected to one end of the first resistor; the other end of the first resistor is connected to the power source, and is connected to the third output terminal through the second resistor; and, the second input terminal is connected to the grounding terminal, and is connected to the third output terminal through the first capacitor.

In this optional embodiment, for example, FIG. 4 shows a wire feeding and binding switching circuit. In the wire feeding and binding switching circuit JP1, 1 denotes the fourth input terminal and 2 denotes the fifth input terminal. This circuit further comprises a resistor R5, a resistor R6, a capacitor C3, a power source and a grounding terminal, wherein, the fourth input terminal is connected to one end of the resistor R5; the other end of the resistor R5 is connected to the power source, and is connected to the third output terminal (hatch-cover) through the resistor R6; and, the fifth input terminal is connected to the grounding terminal, and is connected to the third output terminal through the capacitor C3. When the fourth input terminal and the fifth input terminal in this circuit are short-circuited, this circuit outputs a third electrical signal. This third electrical signal is used to: perform an automatic wire feeding operation when the reel hatch cover is opened, so as to avoid hurting hands during binding due to too high wire drawing speed (the rotation speed of the wire feeding wheel during binding is higher than that during automatic wire feeding); when the reel hatch cover is closed, the automatic wire feeding operation is not performed, and only a binding operation is performed, so as to reduce the situation of triggering wire feeding due to poor contact between the binding wire and the wire feeding wheel or the wire guiding mechanism.

In this optional embodiment, the switch is triggered to be turned off or on by opening or closing the reel hatch cover, and the short circuiting of two input terminals in the wire feeding and binding switching circuit is controlled by turning on or off the switch, so that an electrical signal used for control can be output and the situations of hurting hands and false triggering of wire feeding can be reduced.

In yet another optional embodiment, the switch 9 is a button switch or a press sensing switch. The switch 9 is arranged at the reel hatch cover 10 or a non-reel-hatch-cover portion of the binding machine. The trigger end of the switch 9 is pressed by closing the reel hatch cover 10.

In this optional embodiment, the switch is triggered to be turned off or on by opening or closing the reel hatch cover, so that it is beneficial to subsequently output an electrical signal used for control by turning off or on the switch.

In yet another optional embodiment, as shown in FIG. 3, the reel hatch cover 10 is a flip-type hatch cover, the hatch cover comprises a locking member 101, and the locking member 101 is away from a hinge portion 102 of the reel hatch cover; the hinge portion 102 of the reel hatch cover is hinged to the non-reel-hatch-cover portion of the binding machine; and, the switch 9 is adjacent to the locking member 101.

In this optional embodiment, the switch is arranged adjacently to the locking member. Since the locking member is away from the hinge portion, the acting force applied to the locking member region by the user when closing the reel hatch cover is greater than that applied to other regions, so that the situation of poor contact of the switch can be reduced and the accuracy of subsequent electrical signal output can be improved.

In yet another optional embodiment, the switch 9 is a through-beam photoelectric switch, comprising a light emitter and a light receiver, wherein the light emitter is arranged at the surface of the reel hatch cover or a non-reel-hatch-cover portion of the binding machine, and the light receiver is arranged at a position where it is aligned with the light emitter when the reel hatch cover is closed; or,

The switch 9 is arranged to have a first contact embedded into the reel hatch cover and a second contact embedded into the binding machine, wherein the first contact comes into contact with the second contact when the reel hatch cover is closed; the first contact is electrically connected to the first input terminal; and the second contact is electrically connected to the second input terminal.

In yet another optional embodiment, the third electrical signal is manifested in a TTL level jump mode.

In yet another optional embodiment, the binding wire travel distance between the conductive portion of any one of the driving wire feeding wheel 3 and the driven wire feeding wheel 2 and the conductive portion of the wire feeding nozzle 4 is configured to be 2 to 15 mm; and/or

The binding wire travel distance between the conductive portion of any one of the driving wire feeding wheel 3 and the driven wire feeding wheel 2 and the conductive portion of the wire guiding mechanism 1 is configured to be 2 to 10 mm.

In the common knowledge of physics, when the diameter of the lead is constant, the length of the lead is larger, the resistance of the lead is larger. In this optional embodiment, by restricting the binding wire travel distance within a reasonable and small range, it is beneficial to restrict the resistance of the binding wire within a small resistance range during short circuiting, the situation that the short circuiting cannot be achieved due to too high resistance is reduced, and the stability of achieving short circuiting by the binding wire is improved.

In yet another optional embodiment, as shown in FIG. 1, the binding machine further comprises a rounding mechanism 11 (comprising a rounding plate 111 and a guider 112), a wire winding assembly 12, a wire winding motor 13 for driving the rotation of the wire winding assembly 12, and a PCB board 14 for controlling the operation of the wire winding motor 13, the rounding mechanism 11, the wire winding assembly 12 and the wire winding motor 13 are on a same axis, wherein,

The PCB board 14 is placed in a direction parallel to the axis, and located below the wire winding motor 13. The PCB board 14 has an extension portion, which extends to the rear end of the wire winding motor 13. The PCB board 14 comprises a communication component, a positioning component and a control component. The control component is arranged on the surface of the PCB board 14 facing the wire winding motor 13, and both the communication component and the positioning component are arranged on the rear surface of the extension portion facing away from the wire winding motor 13.

In this optional embodiment, the PCB board is arranged below the motor, since hot air is produced around the motor when it is working and the hot air naturally rises, the heat transfer to the PCB board of the hot air produced by the motor can be reduced. By arranging the communication component and the positioning component on the rear surface of the PCB board, the hot air can be further isolated, the radiation from the motor can be kept away, and the influence of electromagnetic interference to components can be reduced.

Optionally, the communication component may comprise at least one of a WIFI component, a 4G component, an RF component and a Bluetooth component, and the positioning component may comprise at least one of a GPS component, a Beidou component, a Galileo component and a GLONASS component.

In yet another optional embodiment, as shown in FIG. 1, the binding machine further comprises a box 15 for preventing moisture and dust, and the PCB board 14 is arranged in the box 15.

In yet another optional embodiment, as shown in FIG. 5, the binding machine furthercomprises an antenna 16. A cavity is formed between the rear end of the wire winding motor 13 and the inner wall of the shell of the binding machine; the antenna 16 is arranged on the inner wall of the shell corresponding to the cavity; and, an outgoing line of the communication component is connected to the antenna 16.

In this optional embodiment, by providing the antenna on the inner wall of the shell corresponding to the cavity to be away from the wire winding motor, the electromagnetic interference of the motor can be reduced, and the communication quality of the antenna can be improved.

In yet another optional embodiment, sealing glue is covered on the surface of the PCB board 14 facing the wire winding motor 13.

In this optional embodiment, the sealing glue is liquid glue. The liquid glue will be changed to a solid state after being placed for a period of time, so that it can avoid moisture and prevent dust. Optionally, the sealing glue may also be a material with heat conductivity.

In yet another optional embodiment, a grounding layer is arranged on the rear surface of the PCB board 14 facing away from the wire winding motor 13, and the grounding layer is copper-plated

In this optional embodiment, by plating the PCB board with copper and grounding, the effect of isolating the direct radiation of the electromagnetic field can be realized.

Optionally, as shown in FIG. 5, a clamping slot 17 is formed inside the shell of the binding machine, and the box of the PCB board 14 is detachably embedded into the clamping slot 17.

With reference to FIG. 6, FIG. 6 is a schematic flowchart of a wire feeding control method according to an embodiment of the present invention. The wire feeding control method comprises:

S101, upon receiving the first electrical signal, the processor drives the driving wire feeding wheel to rotate for a preset number of turns at a preset rotation speed, so as to advance the binding wire that touches the gear meshing place between the driving wire feeding wheel and the driven wire feeding wheel toward the wire guiding mechanism by a preset feeding amount.

In the embodiment of the present invention, the preset rotation speed is configured to be insufficient to hurt hands in the process of advancing the binding wire.

In the embodiment of the present invention, by receiving the first electrical signal determined as a signal for starting wire feeding, the accuracy and efficiency of determining the start time of wire feeding can be improved. The processor is triggered by the electrical signal to control the driving wheel to rotate for a set number of turns, so as to realize the control of the wire feeding amount. Compared with manual wire feeding in the prior art, the efficiency and accuracy of wire feeding of the binding machine can be improved. By setting the preset rotation speed to be insufficient to hurt hands, the situation of hurting hands due to high rotation speed of the driving wheel of the existing binding machine can be reduced.

In an optional embodiment, the method may further comprise:

Upon receiving the second electrical signal, the processor controls the driving wire feeding wheel to stop advancing the binding wire.

In this optional embodiment, by receiving the second electrical signal determined as a signal for stopping advancing the binding wire, the accuracy and efficiency of determining the time to stop advancing the binding wire can be improved.

In still another optional embodiment, the method may further comprise:

Upon receiving the third electrical signal, the processor executes the operation of driving the driving wire feeding wheel to rotate for the preset number of turns at the preset rotation speed if the first electrical signal is received; and

When the third electrical signal is not received, the processor does not receive the first electrical signal.

In this optional embodiment, by receiving the third electrical signal determined as a prerequisite for entering the automatic wire feeding procedure, the automatic wire feeding operation will not be performed without receiving the third electrical signal, so that the situations of hurting hands (if the user falsely touches the trigger when opening the reel hatch cover, since the feeding speed of the binding wire is very high, the user's hands are easily hurt due to the fast movement of the binding wire when the user's hands get close to the binding wire) and triggering wire feeding due to poor contact of the binding wire can be reduced, and the safety of the binding machine can be improved.

Embodiment 2

In this embodiment is based on Embodiment 1, the automatic wire feeding binding machine in Embodiment 1 is changed from being based on an electrical signal to being based on an optical signal. The automatic wire feeding binding machine comprises a wire guiding mechanism 1, a driven wire feeding wheel 2, a driving wire feeding wheel 3, a wire feeding nozzle 4, a reel 6 for providing binding wire 5, a wire feeding motor 7 and a processor 8, the wire feeding motor 7 is controlled by the processor 8 to drive the driving wire feeding wheel 3 to rotate, wherein,

• • a first photosensitive component is provided in an internal passage of the wire feeding nozzle 4, and the output end of the first photosensitive component is electrically connected to the processor 8 and outputs a first signal to the processor 8 by sensing a light change caused by the binding wire 5 passing through the wire feeding nozzle 4.

In the embodiment of the present invention, the photosensitive component is provided to determine triggering a signal when the binding wire passes through the wire feeding nozzle, so that the processor controls the driving wire feeding wheel to feed the wire according to this signal, and it can be automatically sensed whether the binding wire arrives at the wire feeding nozzle. When the binding wire arrives at the wire feeding nozzle, the wire feeding action is performed automatically. Thus, the accuracy and efficiency of determining whether the binding wire is located at the wire feeding starting position can be improved, and automatic wire feeding can be realized. Compared with manually feeding the wire directly or opening the wire feeding wheel by pressing a buttion and then manually feeding the wire, the efficiency and safety of wire feeding of the binding machine can be improved.

In an optional embodiment, the first photosensitive component is a slot-type photoelectric sensor or a through-beam photoelectric sensor having a light emitter and a light receiver that are separately arranged on both sides of the internal passage of the wire feeding nozzle; or,

The first photosensitive component is a reflector-type photoelectric switch, the light emitter and the light receiver of the reflector-type photoelectric switch are arranged on the same side of the internal passage of the wire feeding nozzle, and the reflector is arranged at a position in the internal passage of the wire feeding nozzle opposite to the light emitter and the light receiver; or,

The first photosensitive component is a diffuse-reflection photoelectric switch; or,

The first photosensitive component is a brightness sensor, and the photosensitive end of the brightness sensor faces the internal passage of the wire feeding nozzle and outputs the first signal based on the brightness change caused by the binding wire passing through the wire feeding nozzle.

In yet another optional embodiment, the interior of the wire feeding nozzle is of a hollow structure, and an internal passage running through from the top to the bottom is formed inside the wire feeding nozzle; the cross-section area of the internal passage of the wire feeding nozzle in the horizontal direction gradually decreases from the bottom to the top; and, the first photosensitive component is arranged on the top of the internal passage of the wire feeding nozzle.

For example, a wire feeding nozzle is shown in FIG. 7, and FIG. 8 is a sectional view of this wire feeding nozzle, wherein, the first photosensitive component is arranged on the top of the wire feeding nozzle. When the first photosensitive component is a through-beam photoelectric sensor, in FIGS. 8, 18 denotes the light emitter, and 19 denotes the light receiver.

The binding wire enters from the bottom of the internal passage of the wire feeding nozzle. Since the internal space of the wire feeding nozzle is narrower as is closer to the top, the binding wire is only fixed when it is on the top of the wire feeding nozzle. In this optional embodiment, by arranging the first photosensitive component on the top of the wire feeding nozzle, the accuracy of determining the start time of wire feeding can be further improved.

In yet another optional embodiment, the wire feeding nozzle is arranged adjacently to an edge of the reel hatch cover, and the shortest distance between the wire feeding nozzle and this edge is 1 to 5 cm.

It can be seen from FIG. 3 that the closer an object to the edge of the reel hatch cover, the illumination intensity it experienced is larger. In this optional embodiment, by arranging the wire feeding nozzle adjacently to the edge of the reel hatch cover, when the reel hatch cover is opened, the brightness change caused by the binding wire passing through the region where the photosensitive component located is larger, and it is beneficial to improve the accuracy and efficiency of determining whether the binding wire is located at the target position.

In yet another optional embodiment, the automatic wire feeding binding machine further comprises a wire guiding mechanism;

• • a second photosensitive component is provided in an internal passage of the wire guiding mechanism, and the output end of the second photosensitive component is connected to the processor and outputs a second signal to the processor by sensing brightness change caused by the binding wire passing through the wire guiding mechanism.

In this optional embodiment, upon receiving the second signal, the processor 8 controls the driving wire feeding wheel 3 to stop advancing the binding wire 5.

In this optional embodiment, the photosensitive component is provided to determine triggering a signal when the binding wire enters the wire guiding mechanism, so that the processor stops the driving wire feeding wheel to feed the wire according to this signal, and it can be automatically sensed whether the binding wire enters the wire guiding mechanism. Thus, the accuracy and efficiency of determining whether the binding wire enters the wire guiding mechanism can be improved, it is beneficial to further complete the automatic wire feeding process, and the efficiency of automatic wire feeding can be improved.

In yet another optional embodiment, the wire guiding mechanism is of a tube structure, and the second photosensitive component is arranged on the top or bottom of the internal passage of the wire guiding mechanism.

For example, a wire guiding mechanism is shown in FIG. 9, and FIG. 10 is a sectional view of this wire guiding mechanism, wherein, the second photosensitive component is arranged on the bottom of the wire guiding mechanism. When the second photosensitive component is a through-beam photoelectric sensor, in FIGS. 10, 20 denotes the light emitter, and 21 denotes the light receiver.

In this optional embodiment, by arranging the photosensitive component of the wire guiding mechanism on its bottom, it is beneficial to determine the moment when the binding wire just enters the wire guiding mechanism as the moment to stop the driving wire feeding wheel from feeding the wire, and the accuracy and efficiency of determining the moment to stop the driving wire feeding wheel from feeding the wire can be improved.

The disclosure in the embodiments of the present invention merely shows the preferred embodiments of the present invention, and is only used for illustrating the technical solutions of the present invention, rather than limiting the present invention. Although the present invention has been described in detail with reference to the above embodiments, it should be understood by a person of ordinary skill in the art that the technical solutions described in the above embodiments can still be modified, or some technical features can be replaced equivalently. These modifications or replacements do not make the gist of the corresponding technical solutions depart from the spirit and scope of the technical solutions in the embodiments of the present invention.

Claims

1. An automatic wire feeding binding machine based on an electrical signal, the automatic wire feeding binding machine comprises a wire feeding nozzle (4), a driving wire feeding wheel (3), a driven wire feeding wheel (2), a wire feeding motor (7), a wire guiding mechanism (1), a processor (8), and a reel (6) for providing binding wire (5), the wire feeding motor (7) is controlled by the processor (8) to drive the driving wire feeding wheel (3) to rotate;

wherein,

conductive portions are provided on at least one of the driving wire feeding wheel (3) and the driven wire feeding wheel (2), and on the wire feeding nozzle (4);

the automatic wire feeding binding machine is provided with a wire feeding control circuit, and the wire feeding control circuit comprises a first input terminal, a second input terminal and a first output terminal, the first output terminal is connected to the processor (8), wherein, the short circuiting between the first input terminal and the second input terminal triggers the first output terminal to output a first electrical signal;

the conductive portion of the wire feeding nozzle (4) is connected to the first input terminal;

the conductive portion of any one of the driving wire feeding wheel (3) and the driven wire feeding wheel (2) is connected to the second input terminal.

2. The automatic wire feeding binding machine according to claim 1, wherein, the wire feeding control circuit further comprises a third input terminal and a second output terminal, the second output terminal is connected to the processor (8), and the short circuiting between the second input terminal and the third input terminal triggers the second output terminal to output a second electrical signal;

the wire guiding mechanism (1) is provided with a conductive portion, and this conductive portion is connected to the third input terminal.

3. The automatic wire feeding binding machine according to claim 2, wherein, in the wire feeding control circuit, one of the first input terminal, the second input terminal and the third input terminal is connected to a first electrode, while the other two thereof are connected to a second electrode; and the polarity of the first electrode is opposite to that of the second electrode.

4. The automatic wire feeding binding machine according to claim 2, wherein, the first electrical signal and/or the second electrical signal is manifested in a TTL level jump mode.

5. The automatic wire feeding binding machine according to claim 2, further comprises a switch (9), a reel hatch cover (10) and a wire feeding and binding switching circuit, wherein,

the wire feeding and binding switching circuit comprises a fourth input terminal, a fifth input terminal and a third output terminal, the third output terminal is connected to the processor (8), and the short circuiting between the fourth input terminal and the fifth input terminal triggers the third output terminal to output a third electrical signal;

the opening or closing of the reel hatch cover (10) triggers the switch (9) to be turned on or off, and both ends of the switch (9) are connected to the fourth input terminal and the fifth input terminal, respectively.

6. The automatic wire feeding binding machine according to claim 2, wherein,

the binding wire travel distance between the conductive portion of any one of the driving wire feeding wheel (3) and the driven wire feeding wheel (2) and the conductive portion of the wire feeding nozzle (4) is configured to be 2 to 15 mm; and/or

the binding wire travel distance between the conductive portion of any one of the driving wire feeding wheel (3) and the driven wire feeding wheel (2) and the conductive portion of the wire guiding mechanism (1) is configured to be 2 to 10 mm.

7. A wire feeding control method, wherein, the method is applied to the automatic wire feeding binding machine according to any one of claims 1 to 6, the method comprises:

upon receiving the first electrical signal, the processor (8) drives the driving wire feeding wheel (3) to rotate for a preset number of turns at a preset rotation speed, so as to advance the binding wire (5) that touches the gear meshing place between the driving wire feeding wheel (3) and the driven wire feeding wheel (2) toward the wire guiding mechanism (1) by a preset feeding amount (S101).

8. The wire feeding control method according to claim 7, wherein, further comprises:

upon receiving the second electrical signal, the processor (8) controls the driving wire feeding wheel (3) to stop advancing the binding wire (5).

9. The wire feeding control method according to claim 7, wherein, the preset rotation speed is configured to be insufficient to hurt hands in the process of advancing the binding wire (5).

10. The wire feeding control method according to claim 7, wherein, further comprises:

upon receiving the third electrical signal, the processor (8) executes the operation of driving the driving wire feeding wheel (3) to rotate for the preset number of turns at the preset rotation speed if the first electrical signal is received; and

when the third electrical signal is not received, the processor (8) does not receive the first electrical signal.