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Tail structure of dry-type expansion mold

A mold and dry technology, applied in the field of dry expansion mold tail structure, can solve the problems of reduced product quality, increased joints of finished products, large noise pollution, etc., achieves short adjustment time, simple enlargement or reduction, and solves adjustment difficulties Effect

Inactive Publication Date: 2013-10-09
SHENZHEN WOER HEAT SHRINKABLE MATERIAL +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will cause a lot of waste finished joints will increase, product quality will decrease, and the yield will decrease.
Normal expansion noise pollution is also large

Method used

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  • Tail structure of dry-type expansion mold
  • Tail structure of dry-type expansion mold

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] see figure 1 , which discloses Embodiment 1 of the tail structure of the dry expansion mold of the present invention, including a shrinking nozzle 10 and a lock nut 20 installed on the shrinking nozzle 10 .

[0019] The constriction nozzle 10 is provided with a tube hole (not shown in the figure) that runs through the constriction nozzle. The constriction nozzle 10 is provided with a number of constriction teeth 11 arranged at intervals around one end of the constriction nozzle. hole 12. One end of the shrink mouth 10 is provided with an external thread.

[0020] The lock nut 20 has a lock hole 21 , and the diameter of the lock hole 21 gradually becomes smaller from one end closer to the shrink nozzle 10 to the other end. The lock nut 20 is adjustably locked on the shrink nozzle 10 , wherein the shrink tooth 11 shrinks in the lock hole 21 of the lock nut 20 . In this embodiment, the lock hole 21 of the lock nut 20 is provided with an internal thread, and the lock nut...

Embodiment 2

[0027] see figure 2 , which discloses Embodiment 2 of the tail structure of the dry expansion die of the present invention. This embodiment is similar to Embodiment 1, and the difference is that it further includes a reducing sleeve 30, and one end of the reducing sleeve 30 is connected to the expansion die (not shown in the figure). shown), the other end of the reducing sleeve 30 is connected to the constricting nozzle 20, the reducing sleeve 30 has a reducing hole 31, and the reducing hole 31 gradually becomes larger from the end closest to the constricting nozzle 10 to the other end.

[0028] In this embodiment, the reducing sleeve 30 is screwed and fixed to the expansion die, and the other end of the reducing sleeve 30 is screwed and fixed to the shrinking nozzle 10 . Of course, the reducing sleeve 30 can also be integrally formed with the constricting nozzle 10, which can facilitate processing and installation.

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Abstract

The invention discloses a tail structure of a dry-type expansion mold. The tail structure of the dry-type expansion mold comprises a constricting nozzle and a lock nut installed on the constricting nozzle; the constricting nozzle is provided with a pipe hole running through the constricting nozzle; the periphery at one end of the pipe hole of the constricting nozzle is provided with a plurality of constricting teeth which are arrayed at intervals; the equal constricting teeth surround into a nozzle hole communicated with the pipe hole; the lock nut is provided with a lock hole; the hole diameter of the lock hole becomes short gradually from one end close to the constricting nozzle to the other end; the lock nut is adjustably locked on the constricting nozzle, and the constricting teeth are constricted in the lock hole of the lock nut. The tail structure of the dry-type expansion mold provided by the invention changes the constricting degree of the constricting teeth positioned in the lock hole of the lock nut through adjusting the lock nut, further adjusts the size of the nozzle hole of the constricting nozzle, compared with an adjustable mold tail of a fixed hole mold tail in the prior art, the structure can simply amplify or shrink the nozzle hole, is short in machine adjusting time, has few waste products, is simple, is easy to operate, and solves the problems of machine adjustment difficulty, easiness in half expansion, easiness in crash, easiness in pipe deposition and the like during the expansion process of a fixed hole.

Description

technical field [0001] The invention relates to a tail structure of a dry expansion mold. Background technique [0002] The dry expansion mold tail of the existing heat shrinkable tube has a simple design and is very easy to process and manufacture. It is the fixing hole and the taper. Because there is a certain gap between the fixing hole and the expansion tube wall, the adjustment machine must reach a reasonable gap before it can be expanded. At present, only The expansion can only be achieved by plugging the filler between the pipe wall and the tail hole of the mold, and it will take a long time to pull out the filler after expansion, and the operation is also complicated. During the expansion process, the pressure inside the pipe wall will gradually increase due to the expansion of the pipe material. After heating, the outer diameter of the original pipe will also increase. When there is no gap between the outer diameter of the pipe and the tail hole of the mold, the acc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C57/04
Inventor 杨庆田
Owner SHENZHEN WOER HEAT SHRINKABLE MATERIAL
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