Abstract: A sewing machine includes a controller and a thread cutter which cuts an upper thread passed through a sewing needle and which has a fixed knife, a moving knife, and a driving source to drive the moving knife. The moving knife cuts the upper thread by guiding the upper thread. The moving knife has a through-hole into which the sewing needle is loosely insertable and includes a thread cutting portion in an inner edge portion of the through-hole. By controlling the driving source, the controller makes a stitch point of a first stitch of the sewing needle with respect to the through-hole of the moving knife, and moves the moving knife to a position where the fixed knife and the moving knife cut a sewing start end portion of the upper thread after a stitch point of a second stitch of the sewing needle.

Abstract: A seam inspection device includes an imaging device and a processing device. The imaging device shoots a sewing object supported by a throat plate of a sewing machine and having seams formed therein. And the processing device detects an abnormality of the seam based on an image of the sewing object acquired by the imaging device.

Abstract: A sewing machine includes a feed mechanism which feeds a workpiece by a feed dog partially protruding out upward from an upper surface of a throat plate and moving along a predetermined feeding direction; a presser foot which presses the workpiece on the upper surface of the throat plate from above; a feed guide which has an abutting surface along the feeding direction and guides feeding of the workpiece; and a control device. The feed mechanism includes a lateral feed mechanism which adds a moving component in a direction along the upper surface of the throat plate and orthogonal to the predetermined feeding direction, to the feed dog. The control device controls the feed mechanism to feed the workpiece by adding a moving component to a side of the abutting surface of the feed guide by the lateral feed mechanism, in addition to the feeding along the regulated feeding direction.

Abstract: A sewing machine includes an upper feed mechanism, a presser foot mechanism and a control device. The upper feed mechanism feeds a workpiece on a throat plate from above by an upper feed dog. The presser foot mechanism includes a presser foot for pressing the workpiece on the throat plate from above. The control device controls a driving source of the presser foot mechanism. The upper feed mechanism supports the upper feed dog to be vertically movable between an upper retreat position and a lower feed position. The upper feed mechanism includes a detection unit that detects a downward movement of the upper feed dog from the retreat position. The control device controls the driving source to pull the presser foot upward by a detection of the detection unit.

Abstract: A production management system includes a sewing machine and a production management device. The sewing machine records chronological operation data. The production management device communicates with the sewing machine, and acquires and stores the operation data. The sewing machine includes a time acquisition unit that acquires a time at the time of the communication from a clock of the production management device at the time of the communication with the production management device and grants time information based on the time at the time of the communication to the operation data recorded at the time of the communication.

Abstract: A sewing machine includes a movement amount detector which is configured to detect a movement amount of a workpiece, a motor which is a rotation driving source of an upper shaft configured to provide a vertical motion to a needle bar, and a control device which is configured to control the motor based on detection of the movement amount detector to maintain a constant stitch length. The movement amount detector is supported to be capable of being raised and lowered around a stitch position. The sewing machine includes a pressing unit configured to provide an upward elastic force such that a detection surface of the movement amount detector protrudes from an upper surface of a throat plate.

Abstract: A spool rest is provided in a thread standing device of a sewing machine so as to hold a thread spool to be attachable and detachable by inserting a support installed to protrude from a thread standing base, in a cylinder portion formed at a center of the thread spool around which a sewing thread to be fed to the sewing machine is wound, the spool rest is a polygonal plate installed on the thread standing base and includes a through-hole that the support provided at a center portion of a placement surface for placing the thread spool penetrates, and a thread passing groove is formed from the center portion of the placement surface toward an outer edge portion.

Abstract: A sewing management system includes a sewing device that transmits a production management information including an identification information of an operator and an operation information of a device main body; and a management device that manages the production management information by a process unit of a product sewn in a sewing line or a component forming the product.

Abstract: A production system includes: a substrate counter configured to count the number of substrates existing in a production line including a mounting device; a mark pattern acquisition unit configured to acquire a mark pattern indicating a pattern of a mark that is provided to each of the plurality of substrates counted by the substrate counter; a determination unit configured to determine whether the respective mark patterns of the plurality of substrates acquired by the mark pattern acquisition unit are the same as each other; and a detection controller configured to control a detection process of the mark pattern by the mounting device based upon a determination result of the determination unit.

Abstract: A lower thread supply device of a sewing machine includes a bobbin, a bobbin case, a magnetic force member, and a magnetic force change portion. The bobbin has a cylindrical portion for inserting into a spindle of a shuttle, a shuttle side flange portion, and a front surface side flange portion which is magnetic, and a lower thread is wound around an outer circumference of the cylindrical portion between the shuttle side flange portion and the front surface side flange portion. The bobbin case has a non-magnetic cover portion having a front surface side part and a side wall part, housing the bobbin and transmitting a magnetic force. The magnetic force member is arranged at the front surface side of the bobbin case and attracts the front surface side flange portion of the bobbin by a magnetic force via the bobbin case.

Abstract: A sewing machine of the present embodiment comprises a movement amount detector which detects a movement amount of fabric, a sewing machine motor serving as a rotary drive source of an upper shaft which applies vertical movement to a needle bar, a shaft angle detector which detects a shaft angle of an output shaft of the upper shaft or the sewing machine motor, and a controller which controls the sewing machine motor based on the detection of the movement amount detector and performs controls of maintaining a constant stitch length. The controller performs controls of maintaining the constant stitch length, by a movement amount of the fabric detected by the movement amount detector in a shaft angle section where a sewing needle is not stuck into a cloth, based on the detection by the shaft angle detector.

Abstract: The present embodiment provide a monitoring system for monitoring at least one of fixed equipment installed in a floor and a moving object moving in the floor, the fixed equipment and moving object being monitoring targets, the monitoring system includes a recognition device that recognizes the monitoring target and outputs recognition information, and a management device that collects position information of the monitoring target from the recognition information.

Abstract: A sewing machine in which a base configured to support a throat plate, a shuttle or a looper, and an input shaft for a stitching operation to the shuttle or the looper with respect to a bed portion of a frame is supported to be movable along a direction of approaching or separating from a sewing needle is provided. The sewing machine includes a connecting member which changes to any one of a state in which the input shaft and a transmission shaft are aligned in the same straight line to be in a torque transmission state and a state in which the input shaft moves together with the base with respect to the transmission shaft, between the input shaft on the base side and the transmission shaft which transmits power to the input shaft.

Abstract: A foot-operated controller of a sewing machine including a first pedal that input a number of revolution of a sewing machine motor by stepping of a user, a second pedal pressed by the user, a main body that supports the first pedal, and a support unit that supports the second pedal, in which the support unit is selectively attachable in disposition where the second pedal is on the left side of the first pedal and disposition where the second pedal is on the right side of the first pedal. In both cases where the second pedal is on the left side of the first pedal and the right side of the first pedal, across an interval between the main body and the support unit, it is possible to detect the pressing to the second pedal with respect to the second element.

Abstract: A needle bar mechanism includes a needle bar connecting stud, two needle bars, needle bar clutches, clutch levers, needle bar clutch stoppers, and deactivating members provided two by two at the stud; a slider configured to selectively collide with one clutch lever and one deactivating member at the time of lifting of the stud; and an interlocking mechanism configured to interlock the deactivating members such that the deactivating members move opposite to each other in an upper-to-lower direction. According to the needle bar mechanism, the slider comes, at the time of lifting of the stud, into collision with the clutch lever and the deactivating member, so that one needle bar clutch can be switched from a holding state to a release state by the stud while the other needle bar clutch is switched from the release state to the holding state by the stud.

Abstract: A sewing machine includes a sewing machine motor, a control device and a wearable sensor. The sewing machine motor is a vertical movement driving source of a needle bar. The control device controls the sewing machine motor such that a sewing pitch is set to be a predetermined value. The wearable sensor is attached on a body of an operator of the sewing machine to detect a moving amount of an attached portion of the wearable sensor. The control device controls the sewing machine motor based on the moving amount of the attached portion detected by the wearable sensor such that the sewing pitch is set to be the predetermined value.

Abstract: A sewing machine includes a controller and a thread cutter which cuts an upper thread passed through a sewing needle and which has a fixed knife, a moving knife, and a driving source to drive the moving knife. The moving knife cuts the upper thread by guiding the upper thread. The moving knife has a through-hole into which the sewing needle is loosely insertable and includes a thread cutting portion in an inner edge portion of the through-hole. By controlling the driving source, the controller makes a stitch point of a first stitch of the sewing needle with respect to the through-hole of the moving knife, and moves the moving knife to a position where the fixed knife and the moving knife cut a sewing start end portion of the upper thread after a stitch point of a second stitch of the sewing needle.

Abstract: An aspect of the present invention is a sewing machine which includes a holding member configured to be movable while holding a workpiece within a predetermined plane including a sewing position immediately below a needle, an actuator configured to move the holding member, an imaging device configured to be capable of capturing the workpiece, a sewing data acquisition unit configured to acquire sewing data including a sewing order to be referred to in sewing processing, and an imaging position setting unit configured to output a control signal to the actuator so that a plurality of feature patterns of the workpiece are sequentially disposed in an imaging region of the imaging device based upon the sewing data.

Abstract: A sewing system which includes a detector for detecting an edge of a cloth installed on an installation table, a cloth conveyor for conveying the cloth from the installation table to a sewing machine, and a controller, wherein the cloth conveyor includes a holding member that holds the cloth, and the controller includes a holding position decision portion that determines a holding position of the cloth based on detection data of the detector, and a conveyance control portion that controls the cloth conveyor such that the holding member holds the holding position. In the sewing system according to the above, it is possible to prevent deterioration in productivity of sewn products.

Abstract: An aspect of the present invention is a sewing system which includes a sewing machine that sews a workpiece, and a three-dimensional measurement device that measures a three-dimensional shape of the workpiece. According to an aspect of the present invention, it is possible to appropriately implement quality control of a product produced by sewing.