JPH0441591Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a pressure welding type that enables cutting and pressure welding of electric wires in one press step.

[Conventional technology]

Conventionally, this type of pressure welding type is shown in Figs. 14 and 15.
As shown in the figure, it has an upper mold 1 and a lower mold 3. A cutter 7 for cutting the electric wire 5 provided between the upper mold 1 and the lower mold 3 is fixed to the upper mold 1 and the lower mold 3.

The lower mold 3 is provided with a connector 9 that is pressed into contact with the electric wire 5. In order to connect the electric wire 5 and the connector 9 by pressure contact, a cylinder 11 for driving the upper die 1 and the lower die 3 and a cylinder 1 for cutting the electric wire 5 are used.
3 is required.

Therefore, a total of four cylinders 11 and 13 are required.

[Problem that the invention attempts to solve]

According to such a pressure contact mold, there is a problem that it is difficult to synchronize the upper mold 1 and the lower mold 3 during press work, and therefore the number of cylinders 11 and 13 has to be increased.

Therefore, an object of the present invention is to provide a press-contact type that can cut and press-contact electric wires in one step of the press by using a press that can synchronize the upper and lower types.

[Means and actions for solving problems]

According to the present invention, a pair of upper and lower press molds 21 and 23 are respectively attached to upper and lower press tables that are movable up and down, and a back-up plate 84 is attached to a press fixing part 86 between the press tables so as to be movable laterally. One of the press-contact molds 21 of the pair of upper and lower press-contact molds 21 and 23 includes a first base 25, a first cutter 31 and a connector guide 66 fixed side by side on the first base 25, and Connector 8 attached to connector guide 66
A clamp claw 70 for clamping the connector 80 is also attached to the connector guide 66 so as to be able to move laterally, and one end surface of the clamp claw 70 is struck by power for supplying the connector 80 to drive the clamp claw 70 and clamp the connector. Equipped with a clamp cam 62,
The other press-contact mold 23 of the pair of upper and lower press-contact molds 21 and 23 is fixed in parallel to the second base 25 so as to face the first cutter 31 and the connector guide 66 on the second base 25, respectively. the second cutter 31 and holder 55, and the holder 55
a press-contact tooth holder 47 that is movably attached to the
A pressure tooth 45 attached to the tip of the pressure tooth holder 47, an electric wire guide 53 attached to the tip of the pressure tooth holder 47 so as to be movable up and down adjacent to the pressure tooth 45, and the wire guide 53 and the pressure tooth. First and second compression springs 51 and 6 interposed between the holders 47 and between the pressure tooth holder 47 and the second base 25 or the holder 55, respectively.
0, a backup plate driving cam 64 is attached to the side end surface of the holder 55, and the first and second cutters 31, 31 are for cutting the electric wire 77 guided by the electric wire guide 53; The first compression spring 51 is connected to the electric wire 7.
After cutting 7, when the wire guide 53 hits the connector 80 clamped by the connector guide 66, the pressure contact tooth holder 47 and the pressure contact teeth 45 further advance to a predetermined pressure contact position, and the wire The back-up plate driving cam 64 slides into contact with the back-up plate 84 and drives the back-up plate 84 to press the end of the press-contact tooth holder 47. The second compression spring 60 engages with the pressure tooth holder 47 in the predetermined pressure contact position, and the second compression spring 60 engages with the pressure contact tooth holder 47 in the predetermined pressure contact position. 47 is further advanced and the tip of the back-up plate driving cam 64 strikes the other end surface of the clamp cam 62 to release the clamp on the connector 80.

〔Example〕

1 and 2 show an embodiment of the pressure contact type of the present invention. The illustrated press-contact mold has an upper mold 21 and a lower mold 23. The upper die 21 and the lower die 23 are capable of cutting and pressing the electric wire using a press table (not shown) of a press that can be vertically synchronized. In this embodiment, the upper mold 21 and the lower mold 23 have the same structure.

Each of the upper mold 21 and the lower mold 23 has a base 25 and a center key 28 fastened to one side of the base 25. A cutter 31 having a cutting portion 30 at its tip is fixed to one side of the center key 28. A guide plate 33 and a guide pin 35 are fixed to the other side of the center key 28. In this way, the base portion 38 is made.

Furthermore, this base portion 38 has a
As shown in the figure, the pressure contact tooth portion 40 and the holder portion 42
is installed. The plurality of pressure teeth 45 of the pressure tooth portion 40 are fastened to a pressure tooth holder 47 with screws or the like. Furthermore, a wire guide 53 is attached to the holder 55 in a state in which it is movably suspended in the direction a in FIG. It serves as a stopper for the pressure contact tooth holder 47.

In the structure in which the pressure contact tooth portion 40 is fastened to the base portion 38, the pressure contact tooth 40 is fastened to the base portion 38 by the second compression spring 60.
5. The pressure contact tooth holder 47, the spring seat 49, the first compression spring 51, and the wire guide 53 are arranged as shown in FIG.
It is suspended so that it can be moved in any direction.

Further, a clamp cam 62 shown in FIG. 5 and a back-up plate driving cam 64, which will be described later, are fastened to the holder 55.

On the other hand, in the holder part 42, as shown in FIG. 5, the clamp cam 62 is movable in the direction c with respect to the connector guide 66, and the pin 7
One press-fitted clamp pawl 70 is mounted so as to be surrounded by a clamp pawl holder 72 so as to be movable in the d direction. A second pin 76 for preventing buckling of the third compression spring 74 is press-fitted into the clamp claw holder 72 . The third compression spring 74 acts in the d direction as a clamping force of the clamp claw 70 when the holder part 42 is attached to the base part 38 .

Note that the roller 82 is attached to the clamp cam 62 by a third pin 68. A first pin 71 is inserted into the clamp claw 70 . This first pin 71 is also inserted into a pin hole 79 of the connector guide 66.

Next, a press-contact operation using a press-contact mold according to an embodiment of the present invention will be explained.

This pressure contact type is operated by a press equipped with a wire clamp that retracts the wire synchronously with the press power.

6 and 7 show the initial state of the press-contact type. First, the connector 80 is supplied to the upper mold 21 and the lower mold 23 by a separate mechanism (not shown), and is clamped by the clamp claws 70. On the other hand, the wire clamp 75 is in a state where the wire 77 is clamped.

The connector 80 is clamped by the clamp cam 62 in FIG.
This is executed by hitting the end face 83 of the That is, the clamp claw 70 moves in the direction of clamping the connector 80 by the third compression spring 74 in FIG.
This clamps the connector 80. Furthermore, the clamp of the connector 80 will be explained in detail. FIG. 16 shows the positional relationship among the connector guide 66, clamp cam 62, clamp claw 70, and third compression spring 74. FIG. 17 shows the relationship between the clamp claw 70 and the clamp cam 62. FIG. 17 shows the relationship between the clamp claw 70 and the clamp cam 62. In the state shown in FIG. 17, the clamp claw 70 is pushed up in the direction A shown in FIG. 16 by the peak of the clamp cam 62.
The clamp is in an open state. This state is the origin state. In this origin state, the connector 80 is supplied to the rail portion 66a through which the connector 80 passes. When the connector 80 is supplied to a predetermined position, the clamp cam 62 is pushed leftward (or rightward). This clamp cam 62 slides by 1/2 pitch of the clamp claw pitch, and
The state shown in the figure will be reached. That is, each clamp claw 70 falls into the valley of the clamp cam 62, and the third
The connector 80 is pushed by the compression spring 74 in the direction B in FIG. 16, and the connector 80 is clamped. After the press contact is completed, the clamp cam 62 is pushed rightward by the cam portion 90 formed on the inner wall of the back-up plate driving cam 64, and returns to the original state. The upper mold 21 and the lower mold 23 are lowered and raised from the state shown in FIG.
The state will be as shown in FIGS. 8 and 9. After the electric wire 77 is positioned by the electric wire guide 53, the electric wire 77 is inserted into the cutter 31.
cut by. Immediately before cutting, as shown in FIG. 9, the backup plate driving cam 64 releases the backup plate 84 so that it does not interfere with the pressure contact tooth holder 47.

The pressure tooth holder 47 abuts against the fixed part 86 of the press and stops moving. The pressure tooth 45 of FIG. 3 mounted on the pressure tooth holder 47 therefore absorbs the subsequent downward and upward strokes of the stop press with the second compression spring 60.

After FIG. 8 and FIG. 9, as shown in FIG. 10 and FIG. It is then returned in the e and f directions.
At this time, the electric wire 77 clamped by the electric wire clamp 75 moves to the pressure contact position of the connector 80.

In addition, in FIGS. 10 and 11, the back-up plate driving cam 64 and the compression spring 8 are shown.
5, the backup plate 84 supports the end of the pressure contact tooth holder 47 and is in a state where it receives the pressure contact force between the connector 80 and the electric wire 77 due to the pressure contact teeth 45.

From the state shown in FIG. 11, the upper mold 21 and the lower mold 23
is lowered and raised, and the state as shown in FIG. 12 is reached, and the pressure welding is completed. During pressure welding, wire guide 5
3 hits the connector 80 and the first compression spring 5
1, it sinks into the inside of the pressure contact tooth holder 47.

The position of the wire clamp 75 in the state shown in FIG.
It is adjusted by a pneumatic cylinder or the like, and thereby maintains the wire position. Then, by following the above explanation in reverse, the initial position is returned to,
The holding state of the wire clamp 75 is released.

Further, the clamp claw 70 is connected to a cam portion 90 provided on the inner wall of the backup plate driving cam 64.
As a result, the roller 82 is struck near the bottom dead center of the pressure welding to release the clamp of the connector 80.

The timing of each part is as shown in FIG.

[Effects of the Invention] As explained above with reference to the embodiments, according to the press-contact type of the present invention, the process of cutting the electric wire and press-fitting it to the connector can be performed in one press process. Therefore, it is possible to provide a press-contact type that allows the number of cylinders to be reduced.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view showing an embodiment of the pressure welding mold of the present invention, Fig. 2 is an exploded perspective view showing the base portion of the pressure welding mold shown in Fig. 1, and Fig. 3 is an exploded view of the pressure welding mold shown in Fig. 1. A perspective view, FIG. 4 is an exploded perspective view of the pressure contact tooth part in FIG. 3,
Figure 5 is an exploded perspective view of the holder part in Figure 3;
The figure is a front view showing the initial position of the pressure welding type, FIG. 7 is a side view of FIG. 6, FIG. Figure 10 is a front view showing the state immediately before the wire is crimped by the crimping type, Figure 11 is a side view of fig. Timing chart, Figure 14 and Figure 1
Figure 5 is a schematic explanatory diagram showing a conventional pressure contact type, Figure 16 is a perspective view of the holder part in Figure 3, and Figure 17 is a diagram showing the holder part in Figure 1.
FIG. 6 is a cross-sectional view showing the relationship between the clamp claw and the clamp cam, and FIG. 18 is a cross-sectional view showing the moving state of the clamp cam in FIG. 17. 1... Upper mold, 3... Lower mold, 5... Electric wire, 9...
Connector, 11...Cylinder, 13...Cylinder, 21...Upper mold, 23...Lower mold, 25...Base, 31...Cut, 38...Base part, 40...
... Pressure contact tooth portion, 45 ... Pressure contact tooth, 51 ... Compression spring, 53 ... Wire guide, 55 ... Holder, 6
2... Clamp cam, 68... Pin, 72... Clamp claw holder, 82... Roller, 80... Connector, 84... Backup plate.

Claims (1)

[Scope of utility model registration request] It includes a pair of upper and lower press-contact dies 21 and 23 respectively attached to upper and lower press tables that are movable up and down, and a back-up plate 84 that is attached to a press fixing part 86 between the press tables so as to be movable laterally. Of the pressure contact molds 21 and 23, one of the pressure contact molds 21 is connected to the first base 25, the first
The first cutter 3 is juxtaposed and fixed on the base 25 of
1 and the connector guide 66, the connector guide 6
A clamp claw 70 clamps a connector 80 attached to the connector guide 66, which is also attached to the connector guide 66 so as to be movable laterally, and drives the clamp claw 70 by striking one end surface of the connector guide 66 with power for supplying the connector 80. A clamp cam 62 is provided for clamping the connector, and the other pressure contact mold 23 of the pair of upper and lower pressure contact molds 21 and 23 is connected to a second pressure contact mold 23.
base 25, and the first base 25 on the second base 25.
A second cutter 31 is fixed in parallel so as to face the cutter 31 and the connector guide 66, respectively.
and a holder 55, a press-contact tooth holder 47 attached to the holder 55 so as to be movable up and down, and the press-contact tooth holder 4.
A wire guide 5 is attached to the tip of the pressure tooth holder 47 adjacent to the pressure tooth 45 and movable up and down.
3. Between the wire guide 53 and the pressure tooth holder 47 and between the pressure tooth holder 47 and the second base 2
5 or the first and second compression springs 51 and 60 interposed between the holder 55, and a back-up plate driving cam 64 attached to the side end surface of the holder; Reference numerals 31 and 31 are for cutting the electric wire 77 guided by the electric wire guide 53, and the first compression spring 51 is used to clamp the electric wire guide 53 to the connector guide 66 after cutting the electric wire 77. When the wire contacts the connector 80, the pressure contact tooth holder 47 and the pressure contact tooth 45 further advance to a predetermined pressure contact position, and the electric wire is connected to the connector 80.
The back-up plate driving cam 64 slides on the back-up plate 84 and drives the back-up plate 84 into engagement with the end of the pressure contact tooth holder 47. The second compression spring 60 further moves the pressure tooth holder 47 forward while holding the holder 55 at the predetermined pressure position. The backup plate driving cam 6
The pressure contact type is characterized in that the clamp of the connector 80 is released by hitting the other end surface of the clamp cam 62 with the tip of the clamp cam 62.