JPH0244471Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] The present invention relates to a device for cutting electric wires.

[Prior Art] Conventionally, as shown in FIG. 7, there is a wire cutting device used as a part of a pressure contact device for pressure contacting conductive contacts 3 to a plurality of wires 1, respectively. In that case, the contacts 3 are integrated into the connector 5.

The connector 5 is placed on the jig stand 7 with the side into which the electric wire 1 is inserted facing upward. An electric wire guide 9 is arranged above the connector 5 to serve as a guide when the electric wire 1 is pressed into contact. The wire guide 9 is rotatably coupled to the jig table 7 by a fulcrum pin 11.
When setting the connector 5, use the wire guide 9
is made perpendicular to the jig table 7 with the fulcrum pin 11 as the axis. When press-welding, place the wire guide 9 on the jig stand 7.
to face.

A plurality of grooves 13 are cut into the wire guide 9 into which the wires 1 are inserted. Further, a die 15 for cutting the electric wire 1 into a predetermined length is incorporated in the lower surface of the electric wire guide 9. The die 15 is long in the direction perpendicular to the groove 13. Above the wire guide 9, these wires 1 are connected to the pressure welding piece 1 of the contact 3.
7 are provided with pressure contact teeth 19 that are pressed into position. The pressure contact teeth 19 are fixed to the holder 21. Pressure tooth 19
The groove 13 of the wire guide 9 is located at the tip end, that is, at the bottom end of the wire guide 9.
A comb tooth portion 23 is formed having a large number of teeth spaced apart from each other so as to fit into the comb tooth portion 23 .

A pilot pin 25 is fixed to the holder 21 for aligning the comb teeth 23 and the grooves 13. The pilot pin 25 corresponds to the pilot hole 27 of the jig stand 7.

Here, the parts attached to the holder 21, including the holder 21, are referred to as an upper mold a. Further, the parts attached to the jig stand 7, including the jig stand 7, are referred to as a lower mold b.

The upper mold a is fixed to a ram 32 of a manual press 30 as shown in FIG. The press 30 is designed so that when the handle 34 is pulled toward the user, the force is multiplied several times and the ram 32 is lowered.
The lower die b enters the slide groove 36 of the press 30 and moves back and forth.

Wire 1 is connected using a pressure welding device for such a connector.
The operation when press-fitting the connector 5 to the connector 5 is as follows.
The explanation will be given with reference to FIGS. 9 to 11 in addition to the drawings.

First, pull out the lower mold b toward you as shown in FIG. 10, open the wire guide 9 clockwise, and connect the connector 5
Set. Next, the electric wire guide 9 is closed, and the electric wires 1 to be pressed are wired and inserted into the grooves 13 of the electric wire guide 9, respectively. After inserting the lower mold b
Push it in until it is just below the upper die a at the pressure welding position. In this state, when the handle 34 of the press 30 is pulled forward, the pilot pin 25 of the holder 21 enters the pilot hole 27 of the jig stand 7, and the upper mold a and the lower mold b are aligned with each other. Next, the comb teeth part 2
3 is inserted into the groove 13 of the wire guide 9 and pushes down the wire 1. At this time, the cutting edge portion 3 of the comb teeth portion 23
7 and die 15 to cut the electric wire 1 into a predetermined length. When the upper mold a is further lowered, the comb tooth portion 23 press-fits the electric wire 1 into the press-fitting piece 17 of the contact 3, and the press-fitting is completed.

[Problems to be Solved by the Invention] However, in such a wire pressure welding device, the corner of one side of the pressure welding tooth 19 is used as the cutting edge portion 37, so when the cutting edge portion 37 is worn out, the pressure welding tooth 19 is removed. It is uneconomical because it has to be made and replaced. The pressure contact tooth 19 itself is not a consumable item because it only press-fits the electric wire 1 into the pressure contact piece 17 of the contact 3.
The problem is that it is integrated with 9.

In addition, since the pressure contact teeth 19 are attached to the upper die a and the die 15 is attached to the lower die b, the upper die a and the lower die b are used to cut the electric wire 1.
Accurate alignment is required. Therefore,
The requirements for the precision of the entire machine become stricter, making the work more difficult.

Furthermore, since the unnecessary wire after being cut remains in the groove of the wire guide 9, a device for discharging the unnecessary portion of the wire 1 is required. Moreover, a large amount of force is required to cut all the electric wires 1 at once.

Therefore, it is an object of the present invention to provide a wire cutting device that allows only the cutting edge portion to be replaced if it becomes worn.

Another object of the present invention is to provide a wire cutting device that allows a margin for alignment between an upper die and a lower die.

Still another object of the present invention is to provide a wire cutting device that does not require a special device to discharge unnecessary parts after cutting the wire and can cut the wire with small force.

[Means for Solving the Problems] According to the present invention, an electric wire cutting device that cuts the extra length of an electric wire and aligns the tips thereof includes a base and a jig stand that is slidably mounted on the base in a predetermined direction. an electric wire guide conveyed on the jig stand and having a predetermined side surface extending in the predetermined direction; and a cutter fixed to the base and facing the predetermined side surface of the electric wire guide; has a groove for receiving the electric wire with the extra length protruding from the predetermined side surface, and the cutter has a downward cutting edge that cuts off the extra length of the electric wire by movement of the wire guide. A wire cutting device is obtained.

[Function] According to the wire cutting device of the present invention, when the wire is inserted into the groove of the wire guide with its extra length protruding from a predetermined side surface and the jig table is moved in a predetermined direction, the cutting edge of the cutter is cut. The excess length of the wire will need to be cut off.

[Embodiment] FIG. 1 shows an embodiment of the wire cutting device of the present invention.

The illustrated wire cutting device includes a jig stand 41 and pressure contact teeth 43 attached to the jig stand 41. The pressure contact teeth 43 are attached to the jig stand 41 with the comb tooth portions 45 at the tips facing upward. Pressure tooth 4
An electric wire guide 49 having a groove 47 into which the electric wire 1 is inserted is arranged above the electric wire 3 . The wire guide 49 is inserted between the pressure contact teeth 43 and the backup guide 53, and is movable up and down relative to the comb tooth portion 45. The vertical stroke of the comb teeth portion 45 is determined by a pin 51 fixed to the wire guide 49 and a long hole 55 provided in a backup guide 53 for backing up the wire guide 49.
That is, the pin 51 is inserted into the elongated hole 55. long hole 5
5, the uppermost position of the wire guide 49 is connected to the comb teeth portion 45.
The upper end and the lower end of the groove 47 are set to coincide with each other. Further, the elongated hole 55 defines the lowest position of the wire guide 49 such that the comb teeth portion 45 protrudes from the upper surface of the wire guide 49. The wire guide 49 is normally stopped at the uppermost position by a spring 57. Note that the backup guide 53 is for backing up the electric wire guide 49.

The jig stand 41 is placed on a base 59 and moves back and forth. The base 59 is fixed to the groove 36 of the press 30 shown in FIG. Here, the parts attached to the jig stand 41, including the jig stand 41, are referred to as a lower mold b. First, a pusher 61 is attached to the ram 32 of the press 30. Here, the push tool 61 is referred to as an upper mold a.

As shown in FIGS. 2 to 4, the base 59 has a cutter 63 for cutting the extra length of the electric wire 1.
is fixed via a cutter holding stand 65.
The cutter 63 is attached to the cutter holding base 65 so that the back surface of the cutter 63 is pressed against a predetermined side surface of the wire guide 49, that is, the surface from which the wire 1 protrudes. Note that the cutter holding stand 5 holds the cutter 6 regardless of the position of the jig stand 41.
3 so as not to be separated from the wire guide 49.

A cutting edge portion 67 is formed at the tip of the cutter 63 and positioned in the moving direction of the jig table 41. The cutting edge portion 67 extends obliquely so as to form a certain angle with respect to the vertical direction. Further, a chute 69 with one end facing diagonally downward is fixed to the base 59 directly below the cutting edge portion 67.

Next, cutting of the electric wire 1 by the above-mentioned electric wire cutting device will be explained.

First, the jig table 41 is pulled out to the front of the base 59 until it hits the front stopper 75, and the electric wires 1 in the captire cable 71 are pinched with fingers and inserted into the grooves 47 of the electric wire guide 49, respectively. At this time, a portion of the electric wire 1 protrudes from a predetermined side surface of the electric wire guide 49 as an extra length. Next, the connector 5 is placed on the wire guide 49 with the side into which the wire 1 is inserted facing downward (see FIGS. 2 and 3). Then, the lower die b is pushed directly below the upper die a (pushing tool 61), that is, to the pressure contact position. That is, the jig table 41 is pushed until it hits the rear stopper 76. At this time,
A cutter 63 fixed to the base 59 cuts the extra length of the electric wire 1 one by one using the end face of the groove 47 as a die surface by continuous pressing force. Since a chute 69 is arranged directly below the cutter 63, the cut excess length of the electric wire 1 slides down the chute 69 and is discharged out of the electric wire cutting device (see FIG. 4).

As the cutter 63, those shown in FIGS. 5 and 6 can be used. In any of the cutters 63, a cutting edge portion 67 is formed so as to generate a downward force on the electric wire 1 when cutting the electric wire.

Further, it is preferable to attach something like a handle to the jig stand 41 so that it can be easily pushed in by hand. Note that when the jig stand 41 abuts against the rear stopper 76 as shown in FIG. 4, cutting is completed and preparation for pressure welding is complete.

[Effects of the invention] As explained above, according to the wire cutting device of the present invention, the cutter is completely independent of the pressure contact teeth, so if the cutting blade becomes worn, only the cutter needs to be replaced, making it economical. It is.

Furthermore, since the cutter can be assembled in close contact with the wire guide, accurate positioning of the upper mold and the lower mold is not necessary.

Furthermore, the wire is set with the unnecessary part, that is, the extra length, protruding from the groove, and the cutting blade that cuts the unnecessary part faces diagonally downward, so the cut wire always falls into the chute below. do. Therefore, there is no need for a special mechanism to cut and remove the wires, and the wires can be processed using only the cutter and chute. Furthermore, since the electric wires are cut one by one, less force is required than when cutting them all at once, and the force of the hand pushing the jig table is enough to cut the wires without using the force of a press.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the wire cutting device of the present invention, Fig. 2 is a plan view of the wire before being pressure welded and wired in the groove of the wire guide, and Fig. 3 shows the wire being cut. 4 is a plan view showing a state where the electric wire is cut, FIGS. 5 and 6 are front views showing other embodiments of the cutter, and FIG. 7 is a perspective view showing a conventional pressure welding device. Fig. 8 is a perspective view of a press machine used for pressure welding, Fig. 9 is a front view showing the pressure welding connection between a contact and an electric wire and the cutting part of the electric wire, and Fig. 10 is a perspective view of a press machine used for pressure welding.
FIG. 11 is a sectional view taken along the line XX in the figure, and a plan view showing a state in which the electric wire is pressed into contact with the contact. 1; electric wire, 3; contact, 5; connector,
7; Jig stand, 9; Wire guide, 13; Groove, 25;
Pilot pin, 30; Press machine, 41; Jig stand, 43; Pressure contact tooth, 49; Wire guide, 51; Pin, 57; Spring, 59; Base, 61; Push tool, 6
3; cutter, 67; cutting edge portion, 69; chute.

Claims (1)

[Scope of utility model registration request] A wire cutting device that cuts the excess length of a wire and aligns the ends thereof includes a base, a jig stand mounted on the base so as to be slidable in a predetermined direction, and a wire cutter that is transported by the jig stand and moved in the predetermined direction. a wire guide having a widened predetermined side surface; fixed to the base;
a cutter facing the predetermined side surface of the electric wire guide, the electric wire guide having a groove for receiving the electric wire with the extra length protruding from the predetermined side surface, and the cutter being moved by the movement of the electric wire guide. An electric wire cutting device characterized by having a downward cutting blade portion for cutting off the extra length of the electric wire.