Stacked oil-cooler vacuum brazing clamp

Abstract

The invention discloses a stacked oil-cooler vacuum brazing clamp, belongs to a vacuum brazing clamp, and aims at providing the vacuum brazing clamp capable of efficiently improving the brazing qualification rate. The vacuum brazing clamp comprises a positioning assembly and a pressing assembly, wherein the positioning assembly is composed of a supporting block (7), a positioning pin (8) and threestep-shaped supporting shafts (5), wherein the supporting block (7) and the positioning pin (8) are fixed on the surface of lower channel steel (6), the step-shaped supporting shafts (5) are fixed onthe surface of lower channel steel (6), and the three supporting shafts (5) are distributed in a triangular manner; and the pressing assembly is composed of upper channel steel (1) supported on the three supporting rods (5), studs (12) which upwards penetrate through the upper channel steel and are connected with nuts, pressing plates (9) which are fixed at the lower ends of all the studs (12) and springs (2) which are positioned between the pressing plates and the upper channel steel (1) and arranged on the corresponding studs (12). The vacuum brazing clamp for an oil cooler is simple in structure and convenient to operate.

Description

technical field [0001] The invention relates to a welding jig for an oil cooler, in particular to a vacuum brazing jig for a laminated oil cooler, which belongs to the vacuum brazing jig. Background technique [0002] The oil cooler is a heat dissipation device that accelerates the heat dissipation of lubricating oil and keeps it at a lower temperature; it is mainly composed of a bottom plate, a heat dissipation core and a cover plate, and the heat dissipation core is mainly composed of ribs and fins. After the above components have been assembled, they are usually clamped with a clamp, and then sent into a vacuum brazing furnace for welding. During the welding process, due to the certain elasticity of the ribs, fins and other parts, and the thermal expansion will occur during the brazing process; there will be gaps between the ribs and between the ribs and the fins, resulting in gaps in the weld, Discontinuous defects such as pores, which cause leakage. In addition, each ...

AI Technical Summary

Problems solved by technology

During the welding process, due to the certain elasticity of the ribs, fins and other parts, and the thermal expansion will occur during the brazing process; there will be gaps between the ribs and between the ribs and the fins, resulting in gaps in the weld, Discontinuity defects such as pores, which cause leakage

In addition, each part is in a high-temperature softening state during the brazing process, and the current fixture has no limit function; the oil cooler is always under pressure during the welding process, and the height and dimension of the product after brazing is seriously too low, which cannot meet Design requirements

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