SU1176465A1 - Device for setting wire contacts on board - Google Patents

Abstract

A DEVICE FOR INSTALLING WIRE CONTACT ON A PAYMENT, containing mechanisms for supplying boards, feeding wire, cutting wire contact and installing a contact in the board hole of the board, which is located on the entry and connected to the drive, in order to increase the reliability of the contact installation, it is equipped with a pre-flatten contact, made in the form of a striker and installed in front of the mechanism for trimming the contact at an angle to the axis of the wire.

Description

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O) SP 1 The invention relates to radio engineering and can be used to assemble mainly double-sided printed circuit boards. The purpose of the invention is to increase the reliability of contact installation by pre-flattening the contacts. FIG. 1 shows a kinematic diagram of the device; in fig. 2 mechanisms for drilling holes, setting the wire contact into the hole of the printed plate and wire feed, cut; Fig. 3 shows the mechanisms for flattening the wire contact and wire feed, section A-A in Fig. 2; Fig. 4 shows an enlarged scale wire contact assembly; figure 5 - wire contact installed in the hole of the board; in FIG. 6, wire contact after riveting. The device comprises a table 1, movable in a horizontal plane, for fastening the plate to be processed 2, a base 3, On the upper side of the board 2, there is a hole drilling mechanism containing a drilling head 4, an electromotor 5, a pressure device 6 and a cutting tool - a drill 7. On the underside of the table 1, a wire feeder is fastened, consisting of a locking collet 8 and a feed collet 9, which has the possibility of vertical movement by means of a pneumatic actuator 10. At an angle to the axis of movement of the wire 11 The wire trimming mechanism has a unit that has a flattening mechanism containing pneumatic actuator 12 and striker 13. Next to the wire feeder, a wire contact installation mechanism is installed in the board hole that contains the ejector and pneumatic actuator 15 that can be vertically moved. coaxially with the drill 7. On the base 3, there is a mechanism for trimming the contact from the wire, containing a plate 16 fixedly attached to the base with holes for the passage of tact and movable plate 17 with pneumatic drive 18, Plate 17 also has holes for contact passage, and plate 17 is tightly pressed to the bar 16 52 Coordinate movement of the board 2 is provided by actuators 19 and 20, All mechanisms are kinematically interconnected and working synchronously from the console control (not shown) for a given program compiled for processing a single board. In practice, several programs can be created for the sequential processing of several different boards. The device works as follows. The machining board 2 is fixed on the table 1 (wire 2, and the wire feed mechanism is threaded with wire 11. When the device operates in automatic mode according to a specified program, the motherboard 2 is driven and stops by drives 19 and 20 in the predetermined position of the wire contact on board 2 Simultaneously with the movement of the board 2, the pneumatic actuator 10, the collet 9 and the collet 8 feed the wire 11 by an amount equal to the contact length, and the wire passes through the hole in the bar 16 and the movable plate 17. Next Under command of the pneumatic actuator 18, the movable plate 17 moves to the left. At the same time, the wire contact 21 with the size h is cut off from the wire -11 and remains in the hole 22 of the plate 17 and is further aligned with the ejector 14 and the drill 7. Then the pressure device 6 is drive, including motor 23, worm gear pair 24, clutch 25, shaft 26, gear train 27, cam 28 and lever 29, presses board 2 to the movable plate 17. From the same drive, the drill head is lowered by cam 30 and lever 31 4 and drill bit 7, is drilled hole in the circuit board 2, after drilling the hole drilling head 4 returns to the original position. Then, by means of the pneumatic actuator 15, the ejector 14 moves the contact 21, which is pre-flattened in the middle part, into the opening of the board 2. Thereafter, the ejector 14 and the pressing device 6 are returned to their original positions. Simultaneously with the ejector 14, the mechanism for crushing the contact is activated. Under the influence of a pneumatic actuator 12

Jets all the way into the wire 11. With further movement of the piston 32 body

33 moves relative to the slider

34 and compresses the spring 35. When moving to a smaller internal diameter of the housing 33, the axis of the hole in the liner 36

coincides with the axis of the striker 13, and the slider under the action of the spring 35 will strike the striker 13, creating an impulse of force sufficient to flatten the pro764, 654

portages 11. The amount of compression vortex of spring 35 can be adjusted by screw 37. Spring 38 returns the striker 13 to its original position. After this, the sequence of technological operations is repeated until the required number of contacts is installed on the board. Then, the board is removed and transferred to a separate device for unstacking contacts from both sides.

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Claims (1)

DEVICE FOR INSTALLING WIRING CONTACTS ON THE BOARD, containing the feeder, wire feeder, wire cutter, wire contact cutter and contact contact insertion holes located on the base and connected to the drive; contact, made in the form of a striker and installed in front of the contact trimmer at an angle to the axis of the wire. <g 04W