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Traceless demolding and gate shearing-free mold and using method thereof

A nozzle mold and demoulding technology, which is applied in the field of non-marking and shear-free nozzle molds, can solve the problems of difficult maintenance of the structure, easy to damage products, etc., and achieve the effects of low production cost, reduction of peaks, and extension of mold life.

Pending Publication Date: 2021-07-09
茂名联塑建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of the above-mentioned shear nozzle scheme that the pneumatic mechanism cuts off the gate structure after the thimble is ejected from the pipe body, the structure is complex and easy to damage the product, and the structure is difficult to maintain, and provides a non-trace demoulding and shear nozzle mold and its use method

Method used

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  • Traceless demolding and gate shearing-free mold and using method thereof
  • Traceless demolding and gate shearing-free mold and using method thereof
  • Traceless demolding and gate shearing-free mold and using method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0041] like Figure 1 to Figure 6 As shown, a non-trace demoulding and shearing nozzle mold includes a fixed mold 6, a fixed mold insert 7 fixed on the fixed mold 6, and a movable mold 1 used in conjunction with the fixed mold 6, which is fixed on the movable mold 1 The movable mold insert 8, the fixed mold insert 7 and the movable mold insert 8 are detachably connected to form a cavity for injection molding of plastic parts, and are arranged in the cavity between the fixed mold insert 7 and the movable mold insert 8 The core 10, the movable mold 1 is provided with a sub-top floating assembly for plastic part traceless demoulding and stripping operation, the core 10 is connected with the sub-top floating assembly, and the sub-top floating assembly is provided for Carry out the nozzle cutter 18 of trim nozzle operation simultaneously during core stripping operation.

[0042] In this way, the non-mark demoulding and core stripping of plastic parts can be realized by adding auxi...

Embodiment 2

[0055] This embodiment is similar to Embodiment 1, the difference is that in this embodiment, the guide assembly includes a guide rail 17 fixed on the movable mold, and the guide rail 17 is slidably connected with the push block 4 . The structure and working principle of other parts of this embodiment are the same as those of Embodiment 1.

Embodiment 3

[0057] This embodiment is similar to Embodiment 1, the difference is that in this embodiment, the guide assembly includes a guide post 15 fixed on the movable mold and passing through the push block 4 , and the guide post 15 is slidably connected with the push block 4 . The structure and working principle of other parts of this embodiment are the same as those of Embodiment 1.

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Abstract

The invention relates to the field of PVC pipeline molds, in particular to a traceless demolding and gate shearing-free mold and a using method thereof. The mold comprises a fixed mold, a movable mold matched with the fixed mold for use, and a mold core arranged in a mold cavity between the fixed mold and the movable mold, the movable mold is provided with an auxiliary jacking and floating assembly used for traceless demolding and depoling operation of a plastic part, the mold core is connected with the auxiliary jacking and floating assembly, and the auxiliary jacking and floating assembly is provided with a gate cutter which is used for performing gate shearing operation while depoling operation is performed. According to the traceless demolding and gate shearing-free mold, the defects that a product is easily damaged and the structure is not easy to maintain due to the fact that a pneumatic mechanism cuts off a gate after a pipe body is ejected by an ejector pin in the prior art are overcome, the traditional demolding sequence is changed, a traceless demolding technology of firstly demolding the mold cavity and then demolding the mold core is realized according to a mode of firstly ejecting and then pulling the core, introduced complex parts needed by a traditional mold can be omitted, meanwhile, traceless ejection and integrated demolding and gate shearing procedures are achieved, and the product has the market competitive advantage.

Description

technical field [0001] The invention relates to the field of PVC pipeline moulds, and more specifically relates to a no-mark demoulding and shearing-free sprue mold and a use method thereof. Background technique [0002] For the mold of PVC drainage pipe fittings, the glue inlet needs to be cut off after the product is injected. However, the existing methods for removing the nozzle have problems such as poor nozzle incision, difficult flow pattern adjustment, and unqualified product performance. In view of these disadvantages, it is necessary to develop A water cutting device with low cost, high efficiency, high quality and long service life. [0003] The Chinese patent document whose publication number is CN205767303U discloses a mold for automatically cutting off the nozzle. After the fixed mold and the movable mold are opened, the runner thimble is pushed against the flow path, the product thimble is pushed against the product, and the air cylinder and the oil cylinder ar...

Claims

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Application Information

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IPC IPC(8): B29C45/33B29C45/38B29C45/40B29C45/26B29K27/06B29L23/00
CPCB29C45/261B29C45/332B29C45/38B29C45/4005B29C2045/2683B29C2045/384B29K2027/06B29L2023/22
Inventor 曾杰强
Owner 茂名联塑建材有限公司