SU740442A1 - Device for compressing parts - Google Patents

Description

one

I The invention relates to the field of metal forming; roar, in particular to the diffusion welding of parts of semiconductor devices.

A multi-seat device for compressing parts during diffusion welding is known, comprising a housing with cells for accommodating parts to be joined, a pressure plate and punches l.

The poor fixture is the uneven distribution of welding pressure on all parts, since the pressure is guaranteed to be distributed only on three parts.

Closest to the invention is a device for squeezing parts, mainly during welding and brazing, comprising a housing with cylindrical cells for mounting the parts to be joined, located in the same plane along the apexes of the triangle, punches and pressure plates 2.

The disadvantage of the known adapt. Assembly is the uneven distribution of pressure on parts in

AND

number 3

in single beds

Noah plane, and low productivity.

The aim of the invention is to evenly distribute the pressure on the parts when welding units in the amount of 3 or, where the pit is a natural number of numbers, starting with 2 and O, respectively, and increasing productivity.

ten

The goal is achieved by the fact that additional groups of three cells are located at the apexes of the triangle, each of which is equipped with a pressure plate, with which the geometric centers of the plates coincide with the centers of gravity of each group of cells and a common pressure plate is installed on them. With the number of jobs defined as, 20 each elementary group of cells contains at least two working cells and one non-working cell in the form of a support lug on the housing of the device.

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FIG. 1 shows the device, top view; figure 2 - section aa of figure 1.

The device includes a housing 1 with cylindrical 30 cells 2 formed therein and {equipped with a centering

the core 3, the punches 4, the clamping plates 5 and the common clamping plate b .. The punches and the clamping plates are made with hemispherical protrusions 7 The plates 5 are made with centering ledges 8, and the plate 6 with centering nest 9.

Cylindrical cells 2 are placed symmetrically relative to a common axis in groups of three cells, the centers of which are located at the vertices of the triangle. Each group of cells is provided with a pressure plate 5 geometrical centers, which coincide with the centers of gravity of each group of cells. On three clamping plates 5 install a common clamping plate 6, etc.

The device works as follows.,

Weld parts .10 and punches 4 are successively installed into cylindrical cells 2, clamping plates 5 are installed for every three punches, on which I install a common clamping plate b. The assembled fixture is installed in the heating device, heated to the welding temperature and compressed.

The welding pressure applied to the hemispherical protrusion 7 of the common pressure plate 6 is uniformly transmitted to the three pressure plates 5, and through neither to the three punches 4 of each of the three groups of cells. This ensures that the pressure applied to the center of the fixture is evenly distributed over a pair of welding parts.

Nine devices, grouped with two similar devices located around a common axis and equipped with a common pressure plate, form a twenty-seven-person device, and the possible number of places is determined by the number 3, where n is 2, 3, 4, ... the cells in each group insert a rod used as a reference point for the pressure plate then such a six-place fixture

can serve as a base for the manufacture of devices with the number of places equal to, where m 0,1,2,3, ...

The use of the invention will improve the degree of uniformity of the distribution of pressure on the parts being joined and thereby improve the quality of the connection.

Claims (2)

1. A device for squeezing parts, mainly during welding and brazing, comprising a housing with cylindrical cells for installing connected parts located in one plane along the apexes of the triangle, punches and pressure plates, in order to evenly distribute pressure on the parts when welding nodes in the amount of 3 or 2x3, where the pit is a natural number of numbers, starting with 2 and O, respectively, and increasing productivity, in the case there are additional groups of three cells located in the vertices of three a square, each of which is equipped with a pressure plate, the geometric centers of the plates coincide with the centers of gravity of each group of cells and a pressure plate is installed on them. 2. The tool according to claim 1, which is distinguished by the fact that when the number of jobs, defined as; each elementary group of cells contains at least two working cells and one non-working cell in the form of a support bracket on the body of the device. Sources of information taken into account in the examination 1. Konyushkov G.V. et al. Diffusion welding in electronics, M., Energie, 1974, p. 59-61. 2. Konyushkov et al. Diffusion welding in electronics, Moscow, Erlergy 1974, p. 111-112, fig. 56 (prototype).