Crimping device
The present invention provides a crimping device that facilitates an adjustment operation and has a reduced height. A crimping device has a crimp height adjustment mechanism for a core of a wire onto which a terminal is to be crimped and a crimp height adjustment mechanism for an insulating coating of the wire, the mechanisms having respective adjustment dials, and the front of the crimping device facing in the opposite direction of the core. In the adjustment mechanisms, the adjustment dials thereof are disposed on the same axis so that the crimping device can have a reduced height compared with conventional crimping devices in which the adjustment mechanisms are disposed at positions different in the vertical direction.
The present invention relates to a crimping device that has adjustment mechanisms that adjust the crimp heights for a core and an insulating coating, respectively, of a wire with an end stripped.
BACKGROUND OF THE INVENTIONIt is desirable to have the ability to adjust the crimp height for a core and an insulated coating of a wire when a terminal is crimped onto the core and the insulating coating. Crimping devices with adjustment mechanisms for adjust the crimp heights for a core and an insulating coating of a wire with an end stripped are known. For example, Japanese Patent Laid-Open No. 7-6849, discloses a crimping device with adjustment mechanisms.
However, in the crimping device disclosed in Japanese Patent Laid-Open No. 7-6849, operating the crimp height adjustment mechanism for a core and the crimp height adjustment mechanism for an insulating coating involves additional operations, such as loosening of a predetermined fastened part, so that it takes time to adjust the crimp heights.
Another crimping device that has two dials for operating the two height adjustment mechanisms is disclosed in Japanese Utility Model Laid-Open No. 7-27086.
As shown in
The tool ram 25 is connected to the press ram 11 described above and has a cam roller 25b supported on a side section 25a thereof by a shaft 25c. The cam roller 25b is fitted into a cam groove 26b formed in the oscillation beam 26. Thus, when the tool ram 25 moves up and down, the oscillation beam 26 oscillates about the shaft 26a. A plate 28 is attached to a lower part of the oscillation beam 26, and a feeding claw 27, whose tip end engages with chained terminals n placed behind a terminal guide rail 23a, is supported on the plate 28 by a shaft 27b.
A terminal n1 shown in
In this crimping device 1, operation of a feeding claw 27 causes the terminal n1, which is the closest to the anvil unit 22 of the plural chained terminals n, to be placed on the anvil unit 22. Then, when the wire 30 with an end previously stripped is placed on the terminal n1 on the anvil unit 22, the press ram 11 moves downward, and the tool ram 25 connected to the press ram 11 is guided by the vertical rails 24 to move downward. Then, the tool ram 25 and the anvil unit 22 cooperate to cut a bridge part n15, which connects the terminal to the carrier n14, and crimp the terminal n1, separated from the chained terminals n, onto the stripped part 30a. When the crimping is completed and the tool ram 25 begins to move upward, the cam roller 25b also moves upward along the cam groove 26b in the oscillation beam 26, and thus, the oscillation beam 26 oscillates about the shaft 26a counterclockwise. This movement causes the feeding claw 27 to place a terminal, which is the closest to the anvil unit 22 of the chained terminals n, on the anvil unit 22 along the terminal guide rail 23a.
As shown in
Here, in the crimping device 1 shown in
In accordance with the recent trend toward downsizing, there is a demand for downsizing of the crimping devices for crimping a terminal onto a stripped part of a wire. However, the crimping device 1 disclosed in the above Japanese Utility Model Laid-Open No. 7-27086 is difficult to reduce in height.
SUMMARY OF THE INVENTIONAccording to an exemplary embodiment of the invention, a crimping device is provided that has a crimp height adjustment mechanism for a core of a wire onto which a terminal is to be crimped and a crimp height adjustment mechanism for an insulating coating of the wire, the mechanisms having respective adjustment dials, and the front of the crimping device facing in the opposite direction of the core, in which the adjustment mechanisms are disposed on a same axis, and the adjustment dials of the adjustment mechanisms are disposed on the front of the crimping device.
Since the adjustment dials of the crimping device according to the present invention is disposed facing to the operator, the crimp height adjustment can be readily achieved. In addition, since the crimp height adjustment mechanism for a core and the crimp height adjustment mechanism for an insulating coating are disposed on the same axis, the adjustment dials of the two adjustment mechanisms are also disposed on the same axis. Therefore, the crimping device according to the present invention can have a reduced height compared with conventional crimping devices that have the adjustment dials at positions different in the vertical direction.
BRIEF DESCRIPTION OF THE DRAWINGS
Now, an embodiment of the present invention will be described with reference to
A crimping device 100 according to the embodiment of the present invention shown in
For the applicator section 102, shown in
The applicator section 102 shown in
In addition, the machine casing 121 has a side plate 130 with an elongated hole 130a formed therein. A shaft 132 is provided between the machine casing 121 and a supporting member 133 attached to the housing section 101 (see
The shaft 132 has a cam follower (not shown) provided thereon, which engages with a cam groove formed in a predetermined surface of the tool ram 125 to allow the shaft 132 to reciprocate in a horizontal direction in
A claw section 127 feeds one of a plurality of chained terminals n, which is the closest to the anvil unit 122, to the anvil unit 122. An arm 127b of the claw section 127 is connected to the shaft 132 and has a shaft 1271b passing through the elongated hole 130a. The side plate 130 has a composite nut 131 having a center section 131 a and a peripheral section 131b attached thereto at the center of the elongated hole 130a. An end of the shaft 1271b of the arm 127b is press-fitted to the center section 131a of the composite nut 131. The center section 131a of the composite nut 131 can rotate with respect to the peripheral section 131b. Thus, when the shaft 132 moves in a horizontal direction in
In addition,
The anvil unit 122 has a floating shear 1221 that separates a leading one from the chained terminals in cooperation with the cut-off punch 1251d. The anvil unit further includes an insulation anvil that achieves crimping in cooperation with the insulation crimper 1252d or the like, although the insulation anvil is not shown in
A pin 1261 and a spring 1260 constituting a plunger and fitted into the bottom of the hole 1250a are shown directly above the main section 1250. An upper edge 1254a of the wire crimper 1254 abuts against the bottom of a jaw 1255b of the crimper support 1255. The flat washer 1256 is thicker than the insulation crimper 1253 and is fitted into an elongated hole 1253a formed in the middle of the insulation crimper 1253. Thus, the insulation crimper 1253 can move vertically with respect to the main section 1250.
The wire dial 140 has a substantially cylindrical shape. The outer circumference of the main body of the wire dial, excluding a front dial plate 140a with numerics inscribed, is constituted by, from the dial plate toward the depth thereof, a section 141 that is surrounded by the coil spring 160 and the insulation dial 150, a fitting section 142 that is a groove which is formed over the total circumference of the wire dial and into which a protrusion 1255a of the crimper support 1255 is fitted, and a polyhedron section 143 that is cut so that different points on the circumference are at different distances from the center of the wire dial. In the middle of each surface 143a of the polyhedron section 143, a shallow conical hole 144 is formed into which the pin 1261 of the plunger is fitted to secure the surface when the surface is selected.
The insulation dial 150 is a short component having a substantially cylindrical shape and has a polyhedron outer circumference. While the distance between the center axis and the inner circumference of the insulation dial 150 is constant, the distance between the center axis and the outer circumference varies with the position along the circumference. That is, the thickness of the insulation dial 150 varies with the point along the circumference. When rotating the insulation dial 150, the insulation dial 150 is pulled toward the dial plate of the wire dial 140 against the biasing force of the coil spring 160. When the insulation dial 150 is released, the pin 1259 protruding slightly from the main section 1250 of the tool ram 125 is fitted into a valley 151 formed in an edge of the insulation dial 150, thereby securing the rotational position of the insulation dial 150.
Now, the crimp height adjustment mechanism for a core and the crimp height adjustment mechanism for an insulating coating, which are provided on a same axis according to this embodiment, will be described with reference to
In addition,
In the crimping device 1, the tool ram 125 moves up and down in response to the press ram 11 (see
The bottom dead center of the insulation crimper 1253 for crimping of an insulation barrel n12 (see
On the other hand, the bottom dead center of the wire crimper 1254 for crimping of a wire barrel n13 (see
As described above, in the crimping device 1 according to this embodiment, the adjustment dials are disposed toward the operator, and therefore, the crimp height adjustment can be readily achieved. In addition, since the crimp height adjustment mechanism for a core and the crimp height adjustment mechanism for an insulating coating are disposed on the same axis, the height of the entire device can be reduced compared with conventional crimping devices with the adjustment dials disposed at different levels.
Claims
I/We claim:
1. A crimping device having a crimp height adjustment mechanism for a core of a wire onto which a terminal is to be crimped and a crimp height adjustment mechanism for an insulating coating of the wire, the mechanisms having respective adjustment dials, and the front of the crimping device facing in the opposite direction of the core,
- wherein the adjustment mechanisms are disposed on a same axis, and
- the adjustment dials of the adjustment mechanisms are disposed on the front of the crimping device.
2. A crimping device for crimping a terminal onto a wire, the crimping device having an insulation crimper with a crimp height adjustment mechanism for an insulating coating of the wire, and a wire crimper for a core of a wire onto which a terminal is to be crimped with a crimp height adjustment mechanism for the core, the mechanisms having respective adjustment dials, and the front of the crimping device facing in the opposite direction of the core,
- wherein the adjustment mechanisms are disposed coaxially, and
- the adjustment dials of the adjustment mechanisms are disposed on the front of the crimping device.
3. The crimping device of claim 2, wherein the insulation dial has a thickness that varies with the point along the circumference.
4. The crimping device of claim 3, wherein the insulation dial is biased against a tool ram having a pin that locks the angular position of the insulation dial, and the insulation dial is manually biased away from the tool ram and free of the pin to adjust the crimp height for the insulation coating of the wire.
5. The crimping device of claim 2, wherein the wire dial has a substantially cylindrical shape, with the outer circumference of the wire dial having a polyhedron section that is cut so that different points on the circumference are at different distances from the center of the wire dial.
6. The crimping device of claim 5, wherein a crimper support is attached to the ram, and the outer circumference of the wire dial has a groove adjacent the polyhedron section, which is formed over the total circumference of the wire dial to receive a protrusion of the crimper support.
7. The crimping device of claim 6, wherein an upper edge of the wire crimper abuts against the bottom of a jaw of the crimper support.
8. The crimping device of claim 5, wherein each surface of the polyhedron section is provided with a shallow conical hole formed to receive a biased pin to secure the surface when the surface is selected.
Type: Application
Filed: Aug 13, 2004
Publication Date: Feb 17, 2005
Inventors: Kouji Imai (Kawasaki), Kazuharu Ishizuka (Urayasu)
Application Number: 10/918,817