JP2001047323A - Method and device for caulking contact - Google Patents

Abstract

PROBLEM TO BE SOLVED: To heighten the producing efficiency by decreasing the downtime of a contact caulking device owing to a defective workmanship of caulking. SOLUTION: A wire of conductive metal is sent out by a second gripper feeder toward a work 11, and the tip is arranged as mating with a mounting hole provided in the work 11. The tip of the wire is cut off by a cutting and caulking die 25, and the cut piece 22a is caulked to the mounting hole so that a contact 13 is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contact swaging method for swaging a contact on a work and a contact swaging apparatus used for the swaging.

[0002]

2. Description of the Related Art A conventional contact caulking device of this type includes a conveying device for conveying a work such as a metal plate, and a caulking device for caulking a contact on a work. Then, the contact is conveyed and supplied from the contact supply device onto the work conveyance path by the work conveying device, and the contact is caulked on a part of the work by the caulking device.

[0003]

However, in the conventional contact swaging device, the stud type contact is swaged in an upright state, so that it is easy to fall down. Therefore, there has been a problem that many crimping failures of the contacts occur. Further, the contact supply device includes many devices such as a contact feeder, a transport rail that transports the contacts from the contact feeder while applying vibration, and a rotating drum that transfers the contacts supplied therefrom. Therefore, it is difficult to supply many contacts in a short time, and there is a problem that it takes a long working time. Furthermore, when caulking the contacts, the contacts supplied from the rotary drum are temporarily caulked, and then the actual caulking is performed. In other words, it is necessary to perform caulking twice,
There was also a problem that the number of work steps was large.

The present invention has been made by paying attention to such problems existing in the conventional technology. It is a main object of the present invention to provide a contact swaging method and a contact swaging apparatus capable of increasing the production efficiency by reducing the operation stoppage of the apparatus due to a swaging failure.

[0005]

According to the first aspect of the present invention, there is provided a contact caulking method for caulking a contact to a work, comprising a conductive metal toward the work. Along with sending out the wire, the tip of the wire is arranged at a position corresponding to the mounting hole provided in the work, and in that state, the tip of the wire is cut, and a cut piece of the wire is inserted into the mounting hole. The gist is caulking.

According to a second aspect of the present invention, in the contact swaging method according to the first aspect, the cutting jig for cutting the wire is also used as a swaging jig for swaging a cut piece of the wire. The gist is that the cutting operation and the swaging operation are performed almost simultaneously by one operation of one jig.

According to a third aspect of the present invention, there is provided a contact caulking device for caulking a contact to a work, comprising: a work transfer means for transferring the work to a predetermined position; The present invention comprises a wire conveying means for sending out a wire rod, and a cutting / caulking means for cutting a tip of the wire rod and caulking a cut piece of the wire rod into the mounting hole.

Hereinafter, the "action" of the present invention will be described. According to the first aspect of the present invention, a wire made of a conductive metal is sent out to the work. Then, the distal end of the wire is arranged at a position corresponding to the mounting hole provided in the work. In this state, the tip of the wire is cut, and the cut piece is caulked into a mounting hole to form a contact.

According to the second aspect of the present invention, the cutting jig for cutting the wire also functions as a caulking jig for caulking the cut piece of the wire. Therefore, the cutting operation and the swaging operation are performed almost simultaneously by one operation of one jig. Therefore, the number of working steps can be reduced.

[0010] According to the third aspect of the present invention, the wire made of conductive metal is sent out toward the work by the wire transfer means, and the tip of the wire is arranged corresponding to the mounting hole provided in the work. . In this state, the tip of the wire is cut by the cutting / caulking means, and the cut piece is caulked in the mounting hole. Thus, the cut piece is swaged to the work as a contact.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. As shown in FIGS. 1 and 2, the work 11 is formed of a substantially U-shaped conductive metal plate. This work 11 has two mounting holes 1
The lower part of a contact 13 having a T-shaped cross section is penetrated through each mounting hole 12. The lower part (lower end in FIG. 2) of the contact 13 is expanded outward, so that the contact 13 is caulked to the work 11.

As shown in FIG. 3, the work 11 is formed from a metal strip 14. As shown in FIG. 4, the band material 14 is intermittently sent out by a first gripper feeder 15 as a work transfer means driven by an air cylinder. Then, a plurality of presses 16a, 16b, 16c arranged side by side on the transporting path of the band material 14,
A part of the band material 14 is punched, and the work 11 is formed.

Next, a contact caulking device for caulking the contact 13 to the work 11 will be described. As shown in FIG. 4, the contact caulking device 20 includes a second gripper feeder 21 serving as a wire rod transporting device driven by an air cylinder. The second gripper feeder 21 is a device that sends out a wire 22 made of a conductive metal, which is a material for forming the contact 13, toward the work 11.

A cutting / caulking mold 25 serving as a cutting / caulking means is provided at a position at a predetermined distance from the second gripper feeder 21 on the conveying path of the work 11.
Is provided. The cutting / caulking mold 25 includes an upper mold 26 and a lower mold 27 that are arranged to face each other. The cutting / caulking mold 25 is used as both a cutting jig and a caulking jig.

First, the lower mold 27 will be described. As shown in FIG. 5, a die punch 29 is provided on the upper surface of the fixed die punch holder 28 so as to protrude vertically. On the upper surface of the die punch 29, a protrusion 3 having a sharp tip portion is provided.
0 are integrally formed. Fixed die punch holder 2
On the upper surface of 8, a movable die punch holder 32 is supported via a plurality of compression springs 31. The upper end of the compression spring 31 is engaged with an engagement hole 33 formed on the lower surface of the movable die punch holder 32.

An accommodating hole 34 is formed in the lower end surface of the movable die punch holder 32, and the die punch 29 is slidably inserted into the accommodating hole 34. A through hole 35 communicating with the outside of the movable die punch holder 32 is formed on the inner top surface of the housing hole 34, and the protrusion 30 is slidably inserted therein. A plurality of inclined surfaces 35a and 35b are formed at the upper edge of the through hole 35. Due to the presence of each of the inclined surfaces 35a and 35b, the upper end opening of the through hole 35 is expanded.

Next, the upper mold 26 will be described. As shown in FIG. 5, the upper die 26 includes a pressing plate 41 that can move in the vertical direction. An engagement recess 42 is formed on the lower surface of the holding plate 41. When the holding plate 41 moves to the caulking position shown in FIG. 6, the engaging concave portion 42 engages with the strip 14 supplied and arranged on the upper surface of the movable die punch holder 32.

On the upper surface of the holding plate 41, an upper stripper plate 43 and a lower stripper plate 44 are provided so as to overlap each other. Both plates 43 and 44 are vertically movable integrally with the holding plate 41. On the upper surface of the lower stripper plate 44, the wire 22
A guide groove 45 capable of engaging the lower portion of the guide groove 45 is formed. The guide groove 45 extends along a direction perpendicular to the plane of FIG. Then, the wire 22 is fed out while being guided by the guide groove 45.

On the upper stripper plate 43, a punching plate 48 is provided via a plurality of compression springs 47.
Is supported. The punching plate 48 is provided integrally with the pressing plate 41. The upper end of the compression spring 47 is engaged with an engagement hole 49 formed on the lower surface of the punching plate 48. A plurality of stoppers 50 are fixed to the lower surface of the punching plate 48. When the punching plate 48 moves downward by a predetermined distance, the lower end surface of the stopper 50 comes into contact with the upper stripper plate 43.

On the lower surface of the punching plate 48 between the compression springs 47, a cutting / caulking punch 51 extending vertically is projectedly provided. The cutting / caulking punch 51 is formed so as to become thinner toward the lower side. The lower end of the cutting / caulking punch 51
The holding plate 41 and both stripper plates 43 and 44
Are inserted into the through holes 41a, 43a, and 44a formed in the holes. Each of the through holes 41a, 43a, 44a is formed so as to be orthogonal to a part of the guide groove 45. Then, as the punch plate 48 moves down, the lower end of the cutting / caulking punch 51 is provided with the through holes 41a, 43a, 4a.
While sliding on 4a, it penetrates the guide groove 45. Cutting
On the lower end surface of the caulking punch 51, a concave blade portion 52 is formed. When the cutting / caulking punch 51 descends, the wire 22 is cut.

Next, a method of caulking the contact 13 to the work 11 using the cutting / caulking mold 25 configured as described above will be described. As shown in FIG.
Are pressed by the first gripper feeder 15 to each press 16
A predetermined amount is sent out to the cutting / caulking mold 25 via a, 16b and 16c. Until the band material 14 reaches the cutting and caulking mold 25, the pressing machines 16a, 16
The workpiece 11 is stamped and formed by b and 16c (see FIG. 3). Then, as shown in FIGS. 4 and 5, in the contact caulking device 20, the wire 22 is fed out by a predetermined amount by the second gripper feeder 21. As a result, the distal end of the wire 22 is arranged at a position corresponding to the mounting hole 12 formed in the work 11.

As shown in FIG. 6, the punching plate 4
8 is lowered against the elastic force of the compression spring 47.
Then, the holding plate 4 is integrally formed with the punching plate 48.
1 descends, and its front end surface contacts the upper surface of the movable die punch holder 32. Then, the lower surface of the stopper 50 comes into contact with the upper surface of the upper stripper plate 43, and the engaging recess 42 formed on the lower surface of the holding plate 41 engages with the work 11. As a result, the work 11 does not shift. At the same time, the cutting / caulking punch 51 descends, and the lower end surface thereof comes into contact with the upper surface of the work 11. This allows
The wire 22 is cut, and the lower part of the cut piece 22 a is engaged with the mounting hole 12 formed in the work 11.

Thereafter, as shown in FIG. 7, when the punching plate 48 is further lowered, both the upper and lower stripper plates 43 and 44 and the holding plate 41 are also lowered via the stopper 50. By this lowering, the movable die punch holder 32 provided on the lower mold 27 lowers against the elastic force of the compression spring 31. Then, the lower surface of the movable die punch holder 32 comes into contact with the upper surface of the fixed die punch holder 28. Then, the lower portion of the cut piece 22a is pressed by the protrusion 30 formed on the die punch 29, and both lower sides of the cut piece 22a are deformed so as to expand outward. Thereby, the cut piece 22 a is caulked as the contact 13 to the work 11. That is, the step of cutting the wire 22 and the step of caulking the cut piece 22a are performed almost simultaneously.

Thereafter, the upper mold 26 is separated from the lower mold 27 in the reverse order, and the cutting and caulking mold 25 is opened. Then, the band material 14 is sent out from the cutting and caulking mold 25 by the first gripper feeder 15, and the work 11 is separated from the band material 14 by a mold (not shown).

Therefore, according to the present embodiment, the following effects can be obtained. (1) The work 11 is moved by the second gripper feeder 21.
A wire 22 made of a conductive metal is sent toward the workpiece 11, and the distal end thereof is arranged corresponding to the mounting hole 12 formed in the workpiece 11. In this state, the tip of the wire 22 is cut by the cutting and swaging mold 25, and the cut piece 22 a is swaged into the mounting hole 12 to form the contact 13. Therefore, unlike the related art in which the contact 13 is of a tack type, the wire 13 does not fall when the wire 22 is fed out.
a can be securely caulked. As a result, it is possible to reduce improper caulking.
Can increase the operating efficiency and lead to an increase in production efficiency.

(2) The cutting / caulking mold 25 can perform the cutting operation and the caulking operation of the wire 22 almost simultaneously by one operation. That is, each time the upper mold 26 approaches the lower mold 27 and the cutting / caulking mold 25 closes once, the cutting operation and the caulking operation are performed. Moreover,
Unlike the prior art, the cutting and crimping mold 25 can be completed by a single crimping operation. Therefore, the number of working steps can be reduced, and the manufacturing cost can be reduced.

(3) The wire 22 is directly sent out to the mounting hole 12 formed in the work 11 by the gripper feeder 21. Therefore, without going through many transport devices,
The wire 22 can be supplied to a position corresponding to the mounting hole 12 of the work 11. Therefore, many contacts 1 in a short time
3 can be swaged.

The embodiment of the present invention may be modified as follows. In the above embodiment, the cutting and caulking mold 25 is used.
Used both for cutting the wire 22 and for caulking the cut piece 22a. In addition, a cutting device for cutting the wire 22 and a caulking device for caulking the cut piece 22a may be provided. And a cutting process and a caulking process may be separately performed using a cutting device and a caulking device.

In the above embodiment, when closing the mold, only the upper mold 26 is moved. Alternatively, the lower mold 27 may be moved with respect to the upper mold 26. Further, both dies 26 and 27 may be movable together.

In the above embodiment, the cross-sectional shape of the wire 22 is inverted T-shaped. Alternatively, the cross-sectional shape of the wire 22 may be an arbitrary shape, for example, a square shape. -In the said embodiment, the workpiece | work 11 was shape | molded from the strip | belt 14 which consists of electroconductivity. Alternatively, the work 11 may be made of a non-conductive material, for example, a synthetic resin.

Next, in addition to the technical ideas described in the claims, the technical ideas grasped by the above-described embodiments will be enumerated below together with their effects. (1) The contact crimping method according to claim 1 or 2, wherein the wire is intermittently sent out by wire transport means.

(2) In any one of claims 1, 2 and (1), the work is formed by punching out a part of the band material, and the work is conveyed by feeding the band material by a work conveying means. A contact caulking method characterized by transporting a work. By feeding the strip, the cut piece can be easily swaged on the work.

(3) The contact caulking device according to claim 3, wherein the cutting / caulking means is provided with a work carrying means for carrying the work. According to this configuration, the work can be transferred by the work transfer unit, so that the manufacturing efficiency can be further improved.

[0034]

As described in detail above, according to the first and third aspects of the present invention, it is possible to increase the production efficiency by reducing caulking defects.

According to the second aspect of the present invention, the number of working steps can be reduced, so that the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a work according to an embodiment.

FIG. 2 is a sectional view taken along line 2-2 of FIG.

FIG. 3 is a perspective view of a strip on which a work is press-formed.

FIG. 4 is a plan view of a contact swaging apparatus and the like.

FIG. 5 is a sectional view of a contact caulking device.

FIG. 6 is a sectional view showing the operation of the contact caulking device following FIG. 5;

FIG. 7 is a sectional view showing the operation of the contact caulking device following FIG. 6;

[Explanation of symbols]

11 ... Work, 12 ... Mounting hole, 13 ... Contact, 21 ... Second
Gripper feeder (wire transport means), 22 ... wire, 22
a: cut piece, 25: cutting / caulking mold (cutting / caulking means).

Claims (3)

[Claims] 1. A contact crimping method for crimping a contact on a work, comprising feeding a wire made of a conductive metal toward the work, and having a front end of the wire corresponding to a mounting hole provided in the work. A contact crimping method, comprising: disposing the wire at a position, cutting a tip of the wire in that state, and caulking a cut piece of the wire into the mounting hole. 2. A cutting jig for cutting a wire rod also serves as a caulking jig for caulking a cut piece of the wire rod, and the cutting operation and the caulking operation are performed almost simultaneously by one operation of one jig. 2. The contact swaging method according to claim 1, wherein the contact is swaged. 3. A contact caulking device for caulking a contact to a work, comprising: a wire conveying means for feeding a wire made of a conductive metal toward the work; A contact and caulking device, comprising cutting and caulking means for caulking the cut piece into the mounting hole.