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Threaded mold realizing firm installation

A thread and strong technology, applied in the mechanical field, can solve the problems of high loss of parts, poor thread interchangeability, and difficulty in fitting threads of parts, etc., to achieve the effects of reducing loss of parts, improving interchangeability, and convenient matching

Inactive Publication Date: 2016-03-02
MIANYANG XIANGTAI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the threaded connection assembly of the metal shell vacuum flask has the following defects: if the thread is too loose, the teeth will slip; if the thread is too tight, it will not be screwed in; , the loss of accessories is relatively high compared to the industry
However, the current threaded dies cannot solve the above problems

Method used

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  • Threaded mold realizing firm installation

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Such as figure 1 As shown, the present invention comprises an upper mold body 1 and a lower mold body 2, three upper mold teeth 4 are arranged on the upper mold body 1, each upper mold tooth 4 is trapezoidal in shape, and each upper mold tooth 4 Trapezoidal threads are also set on the outer surface; 3 V-shaped grooves 5 are also set on the adjacent surface of the lower die body 2 and the upper die body 1, and the size of the V-shaped groove body 5 matches the size of the upper die teeth 4.

[0017] The firmly installed threaded die in this program relies on the local stretching of the material, and adopts the method of rolling to change the shape of the wall of the cylindrical part into a partially concave thread. A gap should be left between the upper mold teeth and the V-shaped groove so that the material of the workpiece can be embedded in it. The size of the gap is selected according to the thickness of the material. The upper mold teeth on the firmly installed thr...

Embodiment 2

[0019] This embodiment is preferably as follows on the basis of Embodiment 1: the angle range of the tooth profile angle 3 formed on the upper mold tooth 4 is between 15°-21°. The setting of this angle avoids the situation that the screw thread is too loose and slippery.

[0020] The profile height of the upper die teeth 4 is 1 / 2 of the distance between two adjacent upper die teeth 4 . Ensure that there is a crest of the upper die teeth in the screwed state of the internal and external threads, and there are side clearances on both sides of the tooth shape, which is convenient for the cooperation of the workpiece threads.

[0021] The distance between two adjacent upper die teeth 4 ranges from 5 mm to 5.5 mm. The size of the stretching gap has an impact on the stretching force, the quality of the part and the life of the die. If the gap is too large, the root of the upper mold tooth will become wider; if the gap is too small, the cylinder wall will be easily thinned, the sur...

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PUM

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Abstract

The invention discloses a threaded mold realizing firm installation. The threaded mold comprises an upper mold body and a lower mold body. The upper mold body is provided with a plurality of upper mold teeth, each upper mold tooth is of a trapezoidal shape, and trapezoidal threads are arranged on the outer surface of each upper mold tooth. A plurality of V-shaped grooves are formed in the surface, adjacent to the upper mold body, of the lower mold body and are matched with the upper mold teeth in size. According to the structure, the problems that when thread screwing is too loose, the threads slip but when thread screwing is too tight, screwing-in cannot be realized are avoided, the gaps of threads of work-pieces can be matched easily, the interchangeability of the threads of the work-pieces of different batches is improved, and the accessory loss is lowered.

Description

technical field [0001] The invention relates to the mechanical field, in particular to a securely installed threaded die. Background technique [0002] Most of the structure of metal shell thermos adopts detachable threaded connection. The assembly quality of threaded connections has long plagued manufacturers. The shell of the metal-shell vacuum flask plays the role of protecting the bottle liner, in order to pack into the bottle liner and facilitate replacement. The threaded connection of metal shell vacuum flasks has long plagued enterprises and has always been a long-standing problem. The threaded circle is pressed on the shell body by piping. However, the threaded connection assembly of the metal shell vacuum flask has the following defects: if the thread is too loose, the teeth will slip; if the thread is too tight, it will not be screwed in; , The loss of accessories is relatively high compared to the industry. And present screw mold all can't solve the above pro...

Claims

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Application Information

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IPC IPC(8): B21H3/02
CPCB21H3/022
Inventor 张吉黄光强陈继贵
Owner MIANYANG XIANGTAI TECH CO LTD