Metal mold sand coating device for casting upper mold of brake drum

A metal mold sand-coated and brake drum technology, which is applied to casting molding equipment, casting molds, molding machines, etc., can solve the problems of insufficient compactness of sand shooting, easy breakage, and long time required for hardening of sand-coated layers, etc., to achieve Short hardening time, high compactness, and improved reuse efficiency

Inactive Publication Date: 2011-04-06
山西汤荣机械制造股份有限公司
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Problems solved by technology

[0003] The metal mold sand coating device for casting the upper mold of the brake drum provided by the invention solves the problems in the prior art that the compactness of the sand shot is not enough, the time required for the

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  • Metal mold sand coating device for casting upper mold of brake drum
  • Metal mold sand coating device for casting upper mold of brake drum
  • Metal mold sand coating device for casting upper mold of brake drum

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Embodiment Construction

[0012] Metal mold sand covering device for casting brake drum upper mold, including upper sand box 1 and upper mold body 7, on the upper sand box 1 are respectively provided with vent hole 3 and sand shooting hole 4, positioning pin 5 and positioning pin The sleeve 6 crimps the upper sand box 1 and the upper mold body 7 together to form a sand-covered gap 2. The thickness of the sand-coated gap 2 is 6-10 mm, and is respectively fixed in the upper mold body 7. There are electric heating tubes 8 and temperature sensors 9, and an exhaust groove 10 is arranged at the end of the opening of the upper mold body 7, that is, the end of the sand-covered gap 2 formed after the upper sand box 1 and the upper mold body 7 are crimped together.

[0013] The wall thickness of the upper mold body 7 is 20-40 mm. The upper sand box 1 is an iron sand box made of gray iron 200. The wall thickness of the upper sand box 1 is 20-40 mm.

[0014] The thickness of the sand-covered gap 2 is preferably 7 ...

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Abstract

The invention discloses a metal mold sand coating device for casting an upper mold of a brake drum, aiming at solving the problems that the compactness of shot sand is insufficient, hardening an overlaying layer takes a long time, a sand box wall, an upper mold wall and a lower mold wall are thin, and the device is easy to rupture in the process of repeated use. The metal mold sand coating device for casting the upper mold of the brake drum comprises an upper sand box (1) and an upper mold body (7); the upper sand box (1) is provided with an exhaust hole (3) and a shot sand hole (4); a positioning pin (5) and a positioning pin sleeve (6) press the upper sand box (1) and the upper mold body (7) to form a sand casting gap (2); the sand casting gap (2) is 6-10mm thick; the upper mold body (7) is internally fixedly provided with an electric heater (8) and a temperature sensor (9); and an exhaust groove (10) is arranged at the opening end of the upper mold body (7), that is, the tail end of the sand casting gap (2) formed by pressing the upper sand box (1) and the upper mold body (7). The invention improves the recycling efficiency of the sand box and the mold.

Description

technical field [0001] The invention relates to a casting tooling equipment for a vehicle brake drum, in particular to an iron mold sand-coating device for casting the upper shape of the brake drum by using a metal mold sand-coating process. Background technique [0002] Brake drums are widely used in the automotive industry. The traditional production process of brake drum mainly adopts green mold sand manual molding or green mold sand mechanical molding. These two methods have the defects of serious out-of-round casting, poor surface quality, low production efficiency and large sand consumption. The Chinese Invention Patent No. is ZL200610144119.1, titled "Method for Manufacturing Brake Drums Using Metal Mold Sand Covering Technology", which discloses a method of manufacturing brake drums using metal mold sand coating technology, which overcomes the limitations of green mold sand molding. The above defects, as well as the difficulty in determining the parting surface cau...

Claims

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Application Information

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IPC IPC(8): B22C15/24B22C9/06
Inventor 杨自勇王小妍陈世强王东会王志平孟喜明
Owner 山西汤荣机械制造股份有限公司
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