JPH0214159Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrical connector crimping device for crimping an electrical connector to a conductor.

As electronic devices become smaller and lighter, electrical connectors also tend to become smaller, which poses new problems in assembly operations. In other words, it is difficult to handle with fingers, the dimensional restrictions are large when crimping or inserting into a housing, etc., and it is difficult for the operator to bend the connector by hand.Furthermore, the strength of the connector, etc. is relatively low. There are problems such as the fact that it cannot be handled roughly because it is small.

For this reason, various devices and machines have been proposed for crimping electrical connectors to conductors such as wires.One example is a press that is equipped with an applicator that is actuated by the ram of the press. There is a device that crimps an electrical connector to a conductor using an applicator in response to the vertical movement of a ram. The applicator of this device typically includes a feeding mechanism for feeding strips of electrical connectors, one after the other above and below the press ram, arranged in a continuous strip to be fed into the applicator; It integrally has a crimping mechanism (usually consisting of a fixed crimping anvil and an applicator ram having a crimping die that cooperates with the crimping anvil) for crimping the fed electrical connector to the conductor; Both the feeding mechanism and the crimping mechanism are operated by the reciprocating motion of the press ram. In this case, the operating timing of the two mechanisms relative to the press ram is different (for example, the feeding mechanism feeds the electrical connector strip, and then the crimping mechanism crimps it), making the operation transmission structure from the press ram to both mechanisms complicated. The problem is that it is easy. For example, even if the movement of the press ram is directly transmitted to the crimping mechanism, the operation timing must be adjusted and transmitted to the feeding mechanism via a complicated link mechanism or the like. For this reason, the structure of the applicator becomes complicated, resulting in problems such as an increase in the size and cost of the device. Furthermore, there are many different types of electrical connectors and conductors, and if the types of electrical connectors and conductors are different, the applicator must also be replaced, and as mentioned above, if the applicator is large and expensive, There is a problem that the time and cost required for replacement increase.

The present invention has been made in view of the above facts, and it is an object of the present invention to provide an electrical connector crimping device that is small, simple in structure, and inexpensive to manufacture.

This invention consists of a small press device with a small applicator attached to it in a detachable manner. a reciprocatable applicator ram having a crimping die cooperating with said crimping anvil to provide a crimping anvil; the applicator ram is reciprocally driven by a press ram of the press device, and the feeding mechanism is mechanically provided separately from the applicator. The press ram is electrically driven in conjunction with the reciprocation of the press ram by a driving means such as an electromagnetic solenoid, thereby achieving the intended purpose. It is.

In the crimping device of the present invention, the applicator ram, which is a part of the crimping mechanism, is actuated directly in accordance with the reciprocating motion of the press ram, but the feeding mechanism is actuated in response to the movement of the press ram by another driving means such as an electromagnetic solenoid. Since it is designed to be operated in an electrically interlocked manner, there is no need for a complicated link mechanism like in conventional applicators, and the applicator can be made smaller and smaller.
In addition to being lightweight, by adopting the block-built method, it is possible to increase the effectiveness of mass production of each part that makes up the entire system and realize cost reduction.

An embodiment of the electrical connector crimping device according to the present invention will be described below with reference to the drawings.

1 to 5 show one embodiment of the present invention. FIG. 1 is a front view of an electrical connector crimping device 10 of the present invention, and FIG. 2 is a right side view. Press base 11
A press frame 16 is fixedly installed above, and a motor 12 is attached to this press frame 16. A pulley 12a is fixed to the end of the rotating shaft of the motor 12, and communicates with a wheel 14 rotatably attached to a press frame 16 via a belt 13, so that the rotation of the motor 12 is transmitted to the wheel 14. One end of the first link 15a is rotatably attached to a point eccentric from the axis of the wheel 14 by a predetermined amount, and second and third links 15b,
One end of 15c is rotatably attached.
The other end of the second link 15b is rotatably attached to the upper part 16a of the press frame 16, and the other end of the third link 15c is rotatably attached to the press ram 17 attached to the press frame 16 so as to be movable in the vertical direction in the figure. It can be installed freely. For this reason, the first to third links 15a, 15b, and 15c constitute a toggle link mechanism, and the press ram 17 moves in the vertical direction in the figure in response to the rotation of the wheel 14 rotated by the motor 12 via the belt 13. Move back and forth.

Further, on the press base 11, a feeding mechanism 2 is provided.
3. An applicator 20 consisting of an applicator ram 21, a crimp anvil 22 and an applicator body 25 is attached. Specifically, the feeding mechanism 23 and the applicator body 25 are integrally fixed on the press base 11, the crimping anvil 22 is fixed on the applicator body 25, and the applicator ram 21 is attached to the applicator body 25.
It can move up and down freely guided by. The upper end 21a of the applicator ram 21 is engaged with the press ram 17, and as the press ram 17 moves up and down, the applicator ram 21 is moved up and down. For this purpose, each connector of the electrical connector strip 26 fed by the feeding mechanism 23 and a conductive pair such as a wire are crimped by the crimping die provided at the lower end of the applicator ram 21 and the anvil 22. The feeding mechanism 23 is a spool 2 of the electromagnetic solenoid 1 that is operated in response to the vertical movement of the press ram 17 (that is, the vertical movement of the applicator ram 21).
It is driven by transmitting the reciprocating motion of the feed mechanism 23 to the terminal feeder 24 of the feeding mechanism 23 via the link 3.

Furthermore, a stripper unit 30, shown as members 31 to 37 in FIG. 2, is attached to the right side of the electrical connector crimping device, and is used to remove the insulation coating of the conductor and cut off the tip. The stripper unit 30 will be described later.

3 and 4 are a front view (FIG. 3) and a right side view (FIG. 4) showing details of the applicator 20 taken out. An applicator body 25 that guides the applicator ram 21 slidably up and down in the figure, and a feeder body 23e (indicated by chain lines in the figure) of the feeding mechanism 23 are fixed on an applicator base 28. As mentioned above, the upper end 21a of the applicator ram 21 is connected to the press ram 17.
As shown in FIG. 4, two crimping dies 21b and 21c are provided at the lower end, and when the applicator ram 21 moves downward, the crimping dies 21b and 21c and the applicator base 28
Each connector of the electrical connector strip 26 is crimped to a conductor between crimp anvils 22 secured above. The reason why two crimping dies are provided is that one crimps the conductive part of the conductor and the conductor receiving part of the connector, and the other crimps the covering part of the conductor and the insulation barrel of the connector. It is.

When the electrical connector is crimped onto a conductor, the electromagnetic solenoid 1 is actuated and the spool 2 is moved downward, causing the link 3 to press the pin 24 of the terminal feeder 24.
Push a to the right in the diagram. Terminal feeder 24
is slidably guided by a guide pin 23d screwed and fixed to the terminal bracket 23a, and is also slidable relative to the terminal base 28. For this reason, terminal feeder 2
4 is movable in the left and right directions in the figure indicated by arrow A;
When the pin 24a pushes to the right in the figure as described above, the terminal feeder 24 moves to the right. One end 27b of a feed finger 27 is rotatably attached to the terminal feeder 24, and this feed finger 27 is pulled upward by a spring 29, and the claw 27 at the other end of the feed finger 27 is pulled upwardly by a spring 29.
a is engaged with the feed hole of the electrical connector strip 26. For this reason, terminal feeder 2
4 moves to the right, the feed finger 27 also moves to the right, and the electrical connector strip 26 that engages with the claw 27a is also sent to the right. Next, the spool 2 of the electromagnetic solenoid 1 moves upward, and the terminal feeder 24 is returned to the left via the link 3.
At this time, since the claw 27a of the feed finger 27 is shaped to point toward the right, when returning to the left,
The hook 27a is disengaged from the feed hole of the strip 26, leaving the strip 26 as it is.

In this way, the electrical connector strip 26
will be delivered. In addition, terminal feeder 2
The stroke in the direction of arrow A (horizontal direction) of No. 4 is adjusted by the head 23c at the tip of the guide pin 23d and the stopper pin 23b screwed and fixed to the terminal bracket 23a.

Further, in this embodiment, a feed finger 27 is provided at the bottom of the electrical connector strip 26, but this is based on the requirement for automation, and a conductive When positioning the feeder body and automatically feeding the electrical conductor as well as the electrical connector strip 26, the upper part of the feeder body is provided with consideration for feeding the electrical conductor. In other words, when the feed finger 27 is provided above the electrical connector strip 26, this prevents the feed finger 27 from getting in the way and making it difficult to automatically feed the conductor.

FIG. 5 is a right side view showing the stripper unit 30 in detail, and FIG. 6 is a plan view showing the blade section 36 of the stripper unit 30 in detail when viewed from above in FIG. .

A stripper bracket 38 is attached to the press base 11 so as to be slidable in the left-right direction (direction of arrow B) in FIG. The tip of the rod 37a of the first cylinder 37 fixed to the press device is rotatably connected to the center portion 31c of the lever 31, and the upper end 31a of the lever 31 is connected to the press device, and the lower end 31b is connected to the stripper bracket 38. Rotatably connected. Therefore, when the first cylinder 37 is actuated to move the rod 37a, the lever 31 swings about the upper end 31a, and the stripper bracket 38 is slid in the direction shown by arrow B. A blade portion 36, a second cylinder 32, a pipe 34, and a vacuum device 35 are fixed to the stripper bracket 38. The rod of the second cylinder 32 is connected to a push rod 33 in the blade portion 36, and the rod of the second cylinder 32
As a result, the push rod 33 is reciprocated in the left-right direction (direction of arrow C) in FIG. The left end of the push rod 33 is connected to a rotating bracket 46 by a pin 33a, and the rotating bracket is rotatably supported by a shaft 45. This rotating bracket 46
A notch 47 is formed at a position opposite to the joint portion with the push rod 33, and this notch 47
Pin 48 fixed to blade bracket 49
are mated. Further, a stripping blade 41a and a cutting blade 42 are fixed to this blade bracket 49, which are arranged parallel to each other at a constant interval in the horizontal direction in the figure. It is designed to be movable in the direction (direction of arrow D).
For this reason, the second cylinder allows the push rod 3 to be
3 reciprocates in the direction of arrow C, this movement moves through the rotating bracket 46 to the blade bracket 4.
9, the blade bracket 49, the stripping blade 41a, and the cutting blade 42 are reciprocated in the direction of the arrow D, and the movement of the stripping blade 41a and the cutting blade 42 causes the conductor 50, such as a wire, to Removes the coating and cuts the conductor. moreover,
Inside the stripper unit 36, there are photocouplers 43a and 43b consisting of a light emitting element and a light receiving element that detect the insertion of the conductor 50, and the inserted conductor 50.
A contact plate 44 is provided to abut against the conductor to prevent it from being inserted too deeply, and a suction hole 51 is provided to suction the cut pieces of the conductor 50 and take them out. The suction hole 51 communicates with the pipe 34, and suction is performed by a vacuum device 35 connected to the right end of the pipe 34.

In the electrical connector crimping apparatus of the present invention constructed as described above, the electrical connector is crimped onto the conductor 50 in the following order.

(1) Wire (conductor) from the left end of the blade section 36
50 until the tip touches the contact plate 44.

(2) Insertion of the wire 50 is detected by the photo couplers 43a and 43b.

(3) The second cylinder 32 operates and pushes the push rod 33 to the left. The blade bracket 49 moves upward in FIG. 6, and the stripping blade 41
a and the cutting blade 42 also move upward in the figure. Therefore, the tip of the wire 50 is cut by the cutting blade 42, and the stripping blade 41a and the mating stripping blade 41b disposed opposite thereto cut the covered portion of the wire 50 (insulation). ).

(4) The first cylinder 37 operates, pulling the rod 37a to the right in FIG. 5, and moving the stripper bracket 38 to the right. Therefore, the blade portion 36 fixed to the stripper bracket 38 also moves to the right, and the wire 50 is held as it is, so that the coating portion into which the stripping blades 41a and 41b have bitten is removed from the wire 50. At this time, the cut and removed wire tip and coating are discharged out of the apparatus by the vacuum device 35 through the suction hole 51 and the pipe 34.

(5) The motor 12 is driven and the press ram 17 is lowered.

(6) The applicator ram 21 connected to the press ram 17 is lowered and the conductor receptacle of one terminal of the electrical connector strip 26 fed onto the crimping anvil 22 by the crimping dies 21b, 21c and the insulator are removed. The tip of the stripped wire 50 is crimped onto the rayon barrel.

(7) As the press ram 17 moves upward, the stripper bracket 38 moves to the left by the second cylinder and returns to its original position.

(8) In the process of (7) above, the electromagnetic solenoid 1 is activated, drives the terminal feeder 24 of the applicator 20, feeds the electrical connector strip 26 by the feed finger 27, and feeds the electrical connector strip 26 to the next electrical connector. is sent onto the crimping anvil 22.

According to the embodiment of the present invention described above, the applicator and the electrical connector feed mechanism are simplified, so costs can be reduced, and in particular, the feed finger is placed below the terminal, making it possible to automatically feed the electric wire. Ta. Furthermore, with regard to the strip unit, variations in the protruding length of the core wire, which greatly affect the strip quality of crimp terminals, can be suppressed, and moreover, the strip chips can be recovered. Furthermore, since the entire stripper unit is forcibly pushed rearward by the link when the press ram is lowered, the crimping function parts inside the applicator will not be damaged in the event of a mechanical failure.

As detailed above, according to the present invention, the structure of the applicator can be simplified and miniaturized, so the cost of applicators, which are required in many types depending on the types of electrical connectors and wires, can be reduced. The economic benefits are huge.

[Brief explanation of the drawing]

1 and 2 show an example of the electrical connector crimping device of the present invention, with FIG. 1 being a front view and FIG. 2 being a right side view. 3 and 4 show an example of the applicator of the electrical connector crimping device of the present invention, with FIG. 3 being a front view and FIG. 4 being a right side view. FIG. 5 is a right side view showing an example of the stripper unit in detail, and FIG. 6 is a plan view showing the blade portion of this stripper unit in detail. 1... Electromagnetic solenoid, 11... Press base,
12... Motor, 13... Belt, 16... Press frame, 17... Press ram, 20... Applicator, 21... Applicator ram, 22...
Crimp anvil, 23... feeding mechanism, 24... terminal feeder, 26... electrical connector strip, 27... feed finger, 30... stripper unit, 31... lever, 32... second cylinder , 33... Push rod, 35... Vacuum device, 36... Blade section, 37... First
Cylinder, 38... Stripper bracket, 41
... Stripping blade, 42 ... Cutting blade, 43a, 43b ... Photo coupler, 50 ... Conductor (wire).

Claims (1)

[Scope of utility model registration request] a reciprocatable applicator ram having a fixed crimping anvil and a crimping die cooperating with said crimping anvil for crimping the electrical connector on said crimping anvil to an electrical conductor; An applicator having a feeding mechanism for feeding a strip and positioning one electrical connector of the strip on the crimping anvil is removably attached to the press, and the applicator ram is connected to the press. The apparatus is driven reciprocatingly by a press ram of the apparatus, and the feeding mechanism is electrically driven in conjunction with the reciprocating movement of the press ram by a driving means provided mechanically separate from the applicator. Connector crimping device.