Double-connecting-pipe core drawing mechanism of automobile thermostat

Abstract

A double-connecting-pipe core drawing mechanism of an automobile thermostat comprises a mold movable mold plate. The mold movable mold plate is provided with a movable mold insert. A three-way elbow with double collecting pipes is arranged in the movable mold insert in an injection molding manner. A core drawing outer sliding block is arranged on one side of the movable mold plate. An upper clamping block, a lower clamping block and double core drawing holes are manufactured in the head of the core drawing outer sliding block. The upper clamping block and the lower clamping block are matched with the outer pipe walls of the double connecting pipes. A small sliding block is arranged in the core drawing outer sliding block. The head of the small sliding block is connected with the core drawing insert. The core drawing insert is provided with double core drawing cores. The double core drawing cores penetrate the double core drawing holes to be matched with the inner pipe walls of the double connecting pipes. A limiting sliding block is installed at the bottom of the small sliding block. A limiting sliding groove is formed in the core drawing outer sliding block, and the limiting sliding block is arranged in the limiting sliding groove and driven through a motor via a gear and a rack to slide. According to the scheme, the structure is compact, the occupied space is small, the size of the mold is reduced, the mold is suitable for machining of small injection molding machines, and investment is reduced. Secondary core drawing is achieved through the gear and the rack, the action is stable and reliable, and core drawing is smooth.

Description

technical field [0001] The invention relates to a core-pulling mechanism for an elbow double-connected tube of an automobile thermostat, which belongs to the field of plastic moulds. Background technique [0002] Plastic molds are used to produce plastic products, such as the connecting elbow of a car thermostat. According to different models, the number and position of the connecting pipes of the elbow are different. One of the elbows is a three-way elbow with double connecting pipes. According to Product shape and function analysis shows that the structure of the elbow is complicated, especially the core-pulling problem of the double connecting pipe. The tightness of the connecting pipe is relatively large, while the traditional plastic mold uses an oil cylinder to directly force the core to be pulled out, and the clamp block and the core-pulling core are pulled out at the same time. , strain, causing the product to be scrapped; on the other hand, the cavity design of the...

AI Technical Summary

Problems solved by technology

[0002] Plastic molds are used to produce plastic products, such as the connecting elbow of a car thermostat. According to different models, the number and position of the connecting pipes of the elbow are different. One of the elbows is a three-way elbow with double connecting pipes. According to Product shape and function analysis shows that the structure of the elbow is complicated, especially the core-pulling problem of the double connecting pipe. The tightness of the connecting pipe is relatively large, while the traditional plastic mold uses an oil cylinder to directly force the core to be pulled out, and the clamp block and the core-pulling core are pulled out at the same time. , strain, causing the product to be scrapped; on the other hand, the cavity design of the plastic mold of the tee elbow is generally inclined

The core-pulling direction of the connecting pipe is set obliquely on the left side of the injection molding machine, and the core-pulling cylinder is placed obliquely on the mold wall, combined with the distance required for core-pulling, therefore, the core-pulling cylinder must be placed obliquely on the outer wall of the mold, so that The overall volume of the mold is increased. During assembly, the core-pulling cylinder is easy to collide with the left template of the injection molding machine, so a large injection molding machine is required for assembly and processing, and the required equipment investment is large.

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