B-shaped flat tube forming process and forming die thereof

Abstract

The invention discloses a B-shaped flat tube forming process which comprises a blank which is manufactured through calculation according to the size of a B-shaped flat tube unfolded material. The forming process comprises the following steps that (1) the blank is manufactured to be in an inverted-U shape, and the height of bent portions of the two ends of the inverted-U-shaped workpiece is equal to the height of a B-shaped flat tube; (2) the inverted-U-shaped workpiece is manufactured into a triangular workpiece manually through a mold core with the cross section shape being a triangle, the width of the bottom edge of the triangular workpiece is equal to the width of the B-shaped flat tube, and a transverse groove matched with the bent portions at the two ends of the inverted-U-shaped workpiece is formed in the cone top of the triangular mold core; and (3) by means of the method for forming the B-shaped flat tube through the triangular workpiece, the triangular workpiece is placed in a groove of a die, the depth of the groove is equal to the height of the B-shaped flat tube, conical bodies of the triangular workpiece are pressed downwards through a pressing plate, and when the pressing plate is pressed onto the upper surface of the die, the B-shaped flat tube is obtained. The B-shaped flat tube forming process and the forming die thereof have the remarkable advantages of being short in manufacturing period and low in cost.

Description

Technical field: [0001] The invention relates to a chip-free forming technology, in particular to a B-type flat tube sample forming process and a forming mold thereof. Background technique: [0002] The B-type flat tube used in the body of the car heater is made of aluminum foil. Because the thickness of the aluminum foil is relatively thin, generally 0.25mm, mass production is made by rolling bending equipment. This rolling bending equipment is complicated, high in precision and low in cost. High, suitable for mass production. However, in the new product development stage, because various parameters need to pass the corresponding prototype test to finalize the final shape, it is impossible to use rolling bending equipment for the prototype flat tube. First, the cost is high, and second, the equipment production cycle is long, which cannot meet the needs of new product development. . Invention content: [0003] The object of the invention is to design a B-type flat tube ...

AI Technical Summary

Problems solved by technology

However, in the new product development stage, because various parameters need to pass the corresponding prototype test to finalize the final shape, it is impossible to use rolling bending equipment for the prototype flat tube. First, the cost is high, and second, the equipment production cycle is long, which cannot meet the needs of new product development.

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