JP3376515B2 - Contact pin bending equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION [0001] A connector is used to connect a circuit of a printed wiring board to another circuit. The present invention relates to an apparatus for bending at an angle. 2. Description of the Related Art A connector is attached to a terminal of an electronic circuit formed on a printed wiring board, and is connected to other electronic components and electronic equipment via the connector. By the way, when a connector is attached vertically to a flat plate-shaped printed wiring board, the space on the upper surface of the printed wiring board is taken away by the connector, resulting in wasted space. Therefore, in many cases, the connector main body is attached in parallel with the printed wiring board, and the contact pins of the connector are used by being bent vertically in order to eliminate the useless space. FIG. 6A shows a state in which a connector (b) is vertically attached to a printed wiring board (a), while FIG. 6 (b) shows a state in which the connector (b) is attached to a printed wiring board (a). The state of attachment is shown in parallel, but as is clear from the figure, by folding and attaching the contact pin (c), the whole device can be made very compact. By the way, a conventional bending process of a contact pin is performed using a mold. [0004] That is, as shown in FIG.
A concave portion (e) is formed in the upper mold, and the concave portion (e) is formed in the upper mold (f).
(E) to form a convex portion (g). With the straight contact pin (c) set in the recess (e), the upper mold (f)
Is lowered and pressed by the convex portion (g) at the tip, a contact pin (c) bent at a predetermined angle is completed. Such a method is the most basic of bending and is performed in all fields. [0005] When the contact pins (b) are bent using the above-mentioned dies, it is necessary to prepare dies corresponding to the respective contact pins, and many dies are required. In addition, it is necessary to be a skilled worker to accurately position and bend the mold, and it takes a long time and productivity is not good. In addition, even if the metal contact pin (c) is bent between the upper and lower dies, the bending angle is often not uniform due to the effect of springback, and there is still a quality problem. As described above, the conventional contact pin bending process has the above-mentioned problems. The problem to be solved by the present invention is this problem, and an object of the present invention is to provide a contact pin bending apparatus which can easily cope with any contact pin and even if the bending angle changes. The contact pin bending apparatus according to the present invention is configured to bend at a predetermined angle while sequentially sending the contacts, and the contacts are pressed in a pre-process to form a reel. It is wound. That is,
It is in a belt-like state in which thin contact pins extend at regular intervals from the connecting portion. Therefore, the sheet is rewound from the reel and bent by a predetermined length, but includes a fixing jig, a clamp jig, and a rotating jig. A predetermined angle is obtained by clamping the contact with the fixing jig and the clamp jig while leaving the tip to be bent, applying a rotating jig to the surface of the tip of the clamped contact, and rotating around the tip of the fixing jig. The bent contact pin is completed. [0008] When the bending jig is bent by a predetermined length (for a predetermined number), the clamp jig is opened, fed by the feeding device by the same length, and bent again when it is clamped again.
These steps are sequentially repeated. Therefore, the contact is fed intermittently. Here, if the width or shape of the contact is different, the fixing jig and the clamp jig are exchanged. On the other hand, if the bending angle of the contact pin changes, the rotation angle of the rotating jig can be adjusted. Of course, the rotation angle of the rotating jig is determined in consideration of the amount of springback of the material, but the structure is such that fine adjustment can be freely performed by controlling the number of rotations of the servomotor. This device is provided with a contact positioning device, and a bending process is performed in a state where a pilot pin is fitted into a hole formed in the connecting portion and is correctly positioned. The contact pin bending apparatus of the present invention comprises a fixing jig, a clamp jig, and a rotating jig, but the positional relationship between these jigs is not particularly limited. That is, the contact can be clamped by arranging the fixing jig on the upper side and pushing up the clamp jig from below, and it is also possible to arrange the contact in the reverse positional relationship. If a belt-shaped contact is to be sent upright, the fixing jig and clamp jig may be placed in an upright position, but in any case, the rotating jig must be at the tip of the fixing jig. Around the center of the fixture so that it falls in the direction of the fixture. When the belt-shaped contact is sent horizontally,
The rotating jig is arranged such that both sides (upper and lower surfaces) are sandwiched between the fixing jig and the clamp jig, and the tip is also aligned with the tip of the sharpened fixing jig. The fixing jig and the clamp jig are attached to a movable base, and the rotating jig is attached to a rotating body also provided on the movable base. The rotating body is rotated by a servomotor, and its angle can be adjusted accurately.However, the rotating body is made into a ring shape, and this ring-shaped rotating body is mounted via a bearing on a movable base-standing base. Then, the rotating jig is fixed to the rotating body. In this case, since the length of the rotary jig is also long in order to bend a predetermined length at a time, the two rotations are required. Preferably, a body is provided and both sides of the rotating jig are attached to respective rotating bodies. Of course, when the length that can be bent at a time is short, it may be attached to one rotating body in a cantilever state. Then, a pilot pin is provided so that the contact is correctly sent and positioned, and the pilot pin is fitted into a hole provided at a constant pitch in the connecting portion. That is, when the pilot pin moves up and down and the contact has been sent, it descends and fits into the hole. A servo motor is used for the rotating body so that the rotation angle can be adjusted accurately. However, it is better to form a gear on the outer periphery of the rotating body and drive a worm meshing with the gear with the servo motor. A more accurate rotation angle can be obtained. Alternatively, a rack can be engaged with a gear (pinion) of a rotating body, and the rack can be slid by a ball screw rotated by a servomotor. By the way, the fixing jig, the clamp jig, and the rotating jig are mounted on a movable base,
The movable base can move according to the bending position of the contact pin (contact). Of course, the fixing jig, the clamping jig, and the rotating jig can be exchanged depending on the width and shape of the belt-shaped contact. Since the contact bent at a predetermined angle cannot be wound on a reel, it is cut to a predetermined length. In the present invention, the specific structure of the cutting device is not particularly limited. In addition, the contact pin is generally bent at one place, but if there are two places, the devices can be arranged in the same row and can be bent by each device. Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. FIG. 1 is an embodiment showing a contact pin bending apparatus according to the present invention. In FIG. 1, reference numeral 1 denotes a contact, 2 denotes a bent contact after bending, and the contact 1 has a large number of contact pins 3, 3,... Extending to The strip-shaped contact 1 is in a state in which a coil material having a predetermined width is press-punched to process the contact pins 3, 3,. Also, holes 5, 5,... Are formed in the connecting portion 4 at regular intervals. Of course, the shape of the contact pin 3 and the width of the contact 1 shown in the figure are only specific examples, and are not limited. The contact pins 1 are bent by the bending apparatus of the present invention, and the contact pins 3 are bent.
It is sent out as a bent contact 2. By the way, the bending apparatus includes a fixing jig, a clamp jig, and a rotating jig, and bends with the rotating jig while the contact 1 is held between the fixing jig and the clamp jig. Although details of these jigs are not known in FIG. 1, the rotating bodies 6 a and 6 b are attached to a pair of stands 7 a and 7 b standing on the movable base 8 so as to be rotatable.
A rotating jig is attached to straddle b. The gantry 7a, 7b stands up at a predetermined interval, and the rotating bodies 6a, 6b attached to the gantry 7a, 7b are hollow ring bodies. The contact 1 and the bending contact 2 pass through holes of the rotating bodies 6a and 6b, and a fixing jig and a clamp jig are arranged between the rotating bodies 6a and 6b. The contact 1 has a predetermined length, that is, a plurality of contact pins 3, 3,... Are bent at a time. For this purpose, a feeder 9a installed outside the rotating bodies 6a, 6b is provided. , 9b, the strip-shaped contact 1 is sent intermittently, and the bent contact 2 is also sent out. The feeders 9a and 9b are provided with rollers 10 and 11 forming a pair. The rollers 10 and 11 sandwich the contact 10 and the bent contact 2, and
Sent by rotation of 0,11. In this case, teeth 12, 12... Are formed at a constant pitch on the outer periphery of one roller 10, and the teeth 12, 12 are formed in holes 5, 5. Will fit in. Therefore, there is no slip and accurate feed is always obtained. FIG. 3 shows a cross section of a fixing jig 13, a clamping jig 14, and a rotating jig 15 which are main parts of the apparatus of the present invention. The rotating jig 15 is attached to both rotating bodies 6a and 6b. The two ends are fixed to a hanging member 16 fixedly attached, and the tip is placed at a position close to the tip of the fixing jig 13, and the contact 1 is located between the fixing jig 13 and the clamp jig 14. Is located in the gap existing in. The contact pins 3, 3,...
It is protruded from 14 and rests on the rotating jig 15. The clamp jig 14 is pushed up by the operation of an air cylinder 17 provided below to clamp the contact 1. In this state, the rotary jig 15 includes the rotating members 6a, 6
.. are bent, and the contact pins 3, 3,... are bent, but the pilot pin 23 descends and fits into the hole 5 of the connecting portion 4 so that the contact 1 is correctly positioned.
That is, after the contact 1 is sent by the operation of the air cylinder 24, the pilot pin 23 descends. 4A and 4B show a process of bending the contact pins 3, 3,... Of the contact 1. FIG. 4A shows a case where the contact 1 is clamped by the clamp jig 14, and FIG. Are rotated by 90 degrees to bend the contact pins 3, 3,..., (C) shows a case where the rotating jig 15 is reversed and returned to the original position. When bent as shown in (c), the clamp is released, and the contact 1 is fed by a predetermined length and clamped again. FIG. 5 is a specific example showing a means for driving the rotating bodies 6a and 6b to rotate. Of course, the present invention is not limited to the case shown in the figure, but an accurate rotation angle is required, and the method must be able to freely adjust the rotation angle. A pinion 18 is attached concentrically to the rotating body 6b, and a rack 19 is engaged with the pinion 18. That is, when the rack 19 moves up and down, the pinion 18 rotates, and at the same time, the rotating body 6b can rotate. Of course, the other rotating body 6a connected by the hanging member 16 also rotates. The rack 19 is connected to a slider 21 which is screwed into a ball screw 20 and moves up and down by rotation of the ball screw. And ball screw 20
Can be rotated by the servo motor 22, and therefore, by controlling the number of rotations of the servo motor 22, the moving distance of the rack 19 can be adjusted. As a result, the rotation angles of the rotating bodies 6a and 6b and the rotating jig 15 can be adjusted. Is determined exactly. The bending contact 2 bent by the bending device is cut to a predetermined length. The contact 1 has teeth 12 of a roller 10 in holes 5, 5,.
12 are engaged with each other, and the cutting length is the feeding length. Since the contact 1 is sent at a fixed position even if the width and the length and shape of the contact pin 3 change, when the bending position of the contact pin 3 changes, the fixing jig 13 and the clamp jig are used. 14 and the position of the rotary jig 15 are adjusted. That is, the movable base 8 to which the frames 7a and 7b are attached must be moved and adjusted, but this is also a structure in which the screw is turned by the rotation of the servomotor. Of course, other adjustment means can be freely used. Further, the fixing jig 13, the clamping jig 14, and the rotating jig 15 can be exchanged according to the shape of the contact 1, particularly the shape and length of the contact pin 3. As described above, according to the present invention, the contact is clamped and clamped by the fixing jig and the clamp jig, and the rotating jig is rotated by hitting the contact pin surface to bend the contact. Can be obtained. According to the present invention, the contact pin can be bent by clamping the contact, but the rotation angle of the rotary jig is adjusted regardless of the bending angle of the contact pin. This is possible. The rotation angle can be easily adjusted by controlling the rotation speed of the servo motor, even if the influence of the spring back of the contact pin can be finely adjusted. Further, even when the bending position of the contact pin changes, the positions of the fixing jig, the clamp jig, and the rotating jig can be easily changed by moving and adjusting the movable base.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an embodiment showing a contact pin bending apparatus of the present invention. FIG. 2 is a specific example of a contact. FIG. 3 shows a cross section of a main part of a contact pin bending apparatus. FIG. 4 is a step of bending a contact pin. FIG. 5 is a specific example showing a rotation driving unit of the rotation jig. FIG. 6 shows a case where a connector is attached to a printed wiring board. FIG. 7 shows a conventional contact pin bending process. [Description of Signs] 1 Contact 2 Bending contact 3 Contact pin 4 Connecting portion 5 Hole 6 Rotating body 7 Mount 8 Moving base 9 Feeding device 10 Roller 11 Roller 12 Teeth 13 Fixing jig 14 Clamp jig 15 Rotating jig 16 Hanging Material 17 Air cylinder 18 Pinion 19 Rack 20 Ball screw 21 Slider 22 Servo motor 23 Pilot pin 24 Air cylinder

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01R 43/16

Claims (1)

(57) [Claim 1] In an apparatus for bending a contact pin of a connector attached to a printed wiring board to an appropriate angle, a contact pin is continuously arranged at a constant interval from a continuous connecting portion to one side. Equipped with a feeding device that intermittently sends the contact extending, mounting a fixing jig and a clamp jig for clamping the connecting portion side of the contact on a movable base that can be finely adjusted, and to both jigs a rotary jig rotates around the fixed jig tip against the clamped surfaces of the contact pins of the contact Te, the rotating jig is erected in between fixture and the clamp fixture on the movable base both <br/> A hook attached across a rotating body rotatably provided on a base
Attached to the frame , the celestial body is driven by a servomotor and the rotation angle can be freely fine-tuned, while on the other hand, it is formed on a joint to correctly position the contact sent by the feeder comprising a positioning device for vertically moving the pilot pins fitted into holes are, and the above rotating body provided with a pinion on, mounting a rack meshing with該Pi two on the pedestal, the screw in the servo motor spindle A contact pin bending apparatus, wherein the rack is connected to a slider that is connected and slides by rotation of the screw.