SU1393568A1 - Apparatus for unilateral resistance microwelding - Google Patents

Abstract

The invention relates to the field of micro welding, and m. used in installations for one-sided welding of conductors with metallized contact pads. The goal is to improve the quality of welding. The drive mechanism moves the carriage of the drive 3 in the direction of the weld zone. Through the spring 22, the trunks with compression carriage 4 are moved until the heat sink insert 12 reaches the welded conductor and stops. Electric carriers are detached from the stop 13 of the insert 12 and the force of the pressure mechanism 20 is transmitted through the insert 12 to the conductor, pressing it against the contact pad. The movement of the compression carriage 4 continues until the ends of the electrodes press the wire 1d to the contact pad. Independent movement of the heat sink insert allows the contact pad to be pressed tightly against the welded conductor and improves the quality of welding. 4 W1. v

Description

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The invention relates to micro-welding and can be used in installations for one-sided welding of conductors with metallized contact pads on dielectric substrates.

The purpose of the invention is to improve the quality of welding.

Figure 1 shows the device, side view, figure 2 shows a section A-Anafig.) FIG. 3 is a section BB in Fig. 1, figure 4 shows a device, viewed from the front with partial sections.

The device comprises a housing 1, in which the drive carriage 3 and the compression carriage 4 are moved in the ball guides 2. On the carriage 4, the presses 5 are electrically insulated from each other right 5 and left 6 vessels with electrode holders 7 and 8 mounted on the trunks through adapters 9, welding electrodes 10 and

11 and T-shaped heat sink insert

12 between them. The insert of the protruding parts with the stops 13 lies on the welding electrodes, while its working end 14 stands for the working ends of the 15 and 16 welding electrodes. The insert 12 can be moved in the guide grooves 17 and 18 of the welding electrodes. The insert 12 is pressed through the rod 19 by a pressure mechanism 20 made in the form of a hollow cylinder with spring-loaded stem 13 accommodated therein.

com, and fixed on the L-shaped

lever 21, which is mounted on the carriage 3 of the drive.

The drive carriage 3 is connected to the carriage 4 by pressing through trunks 5 and 6, gins 22 with an adjusting screw 23. One end of the spring abuts against the carriage 3 of the drive, and the other ends to trunk 5 and 6 of the compression carriage 4, it also has a switch 24, from the contact screw 25, rigidly connected through one of the trunks 5 or 6 to the compression carriage 4.

For adjusting the interelectrode gap, the trunks 5 and 6 are interconnected by a control mechanism 26.

. The device works as follows.

The dielectric substrate 27 with a metallized pad

After stopping the compression carriage 4 with the trunks 5 and 6, the drive carriage 3 continues to move until the contact screw 25 comes out of engagement with the contact device 24, after which the welding current passes through the elements to be welded. Next, the drive mechanism returns the carriage to its original position.

Independent movement of the heat sink insert ensures a tight pressing of the contact pad to the welded conductors before the installation of the electrodes and improves the quality of welding.

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Claims (1)

Invention Formula A device for one-way contact micro-welding, comprising a housing with a drive carriage and a compression carriage carrying the welding electrodes, an interelectrode gap adjustment mechanism, an interelectrode heat sink insert and a contact 28 and a welded conductor 29 across the device for switching the welder 10 15 ) 20: d , AP 3935682 board indicated by the arrow. Through spring 22 trunks 5 and 6 with a carriage 4 shrinks move in the same direction until insert 12 resists the welded element conductor 29 and stops. At the same time, the rod 19 stops along with it. Continuing to move further, the electric holders 7 and 8 are detached from the stop 13 of the insert 12, and the force of the pressure mechanism 20 is transmitted through the insert 12 to the conductor 29, pressing it to the contact pad 28. The movement of the compression carriage 4 continues until as long as the conductor 29 does not push the ends 15 and 16 of the electrodes 10 and 11, pressing it to the contact pad 28 (with a force mounted on the spring 22 with the help of a screw 23). Thus, since the power circuit of the insert 12 is closed through the adjustable link of the mechanism 20 and the lever 21 to the carriage 3 of the actuator, and the force 25 is closed to the carriage 4 of the electrodes 10 and 11 to the carriage 4 squeeze through the trunks 5 and 6, the forces on the electrodes and the insert are independent of each other. The movements of these parts are also independent of each other. After stopping the compression carriage 4 with the trunks 5 and 6, the drive carriage 3 continues to move until the contact screw 25 comes out of engagement with the contact device 24, after which the welding current passes through the elements to be welded. Next, the drive mechanism returns the carriage to its original position. Independent movement of the heat sink insert ensures a tight pressing of the contact pad to the welded conductors before the installation of the electrodes and improves the quality of welding. thirty 35 45 Invention Formula A device for one-way micro-welding, comprising a housing with a drive carriage and a compression carriage carrying the welding electrodes, an interelectrode gap control mechanism, an interelectrode heat sink insert and a contact device for welding placed under welding electrodes 10 and 11. The drive mechanism (not shown) moves the carriage 3 of the drive into nanometers of current, characterized in that, in order to improve the quality of welding, the device is equipped with an L-shaped lever mounted on the drive carriage and a pressure mechanism placed on it interelectrode heat-diverting insert made in the form of a hollow cylinder with a spring-loaded stem installed in it, while the heat sink insert is made T-shaped with a length exceeding the length of the welding electrodes, and is installed with the possibility of reciprocating movement along the welding electrodes. t / z.3 FIG.