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Exhaust device, its assembly method and tire mold with the same

An exhaust device and tire mold technology, which is applied to other household appliances, tires, household appliances, etc., can solve the problems of difficult to control the installation tolerance of the closing stroke of the shaft head, the mandrel is easy to fall off, and the fixing process of the mandrel is complicated.

Active Publication Date: 2021-06-04
GAOMI TONGCHUANG VALVE CORE CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, during the assembly process, the installation tolerance of the closing stroke of the shaft head is difficult to control, and it cannot be controlled within a reasonable range; moreover, the fixing process of the mandrel is complicated, and even if it is fixed, the mandrel is easy to fall off

Method used

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  • Exhaust device, its assembly method and tire mold with the same
  • Exhaust device, its assembly method and tire mold with the same
  • Exhaust device, its assembly method and tire mold with the same

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0042] figure 1 A cross-sectional view of the exhaust device 1 of the first embodiment of the present invention is shown. Such as figure 1 As shown, the exhaust device 1 includes a casing 10 in which an inner cavity 11 with two ends is formed. The spring 20 and the mandrel 30 are inserted in the inner cavity 11 of the casing 10 .

[0043] A shaft head 31 is formed on one end of the mandrel 30 , and the outer peripheral surface of the shaft head 31 is in the form of a shaft head cone 32 . Correspondingly, the inner cavity 11 forms an outer sleeve tapered surface 13 on the inner peripheral surface of the first end 12 of the outer cover 10 (that is, the end facing the inside of the tire mold in the installed state), and the shaft head tapered surface 32 The shape matches. In this way, the taper surface 32 of the mandrel 30 can cooperate with the taper surface 13 of the casing 10 to form a seal.

[0044]The conical surface 32 of the shaft head and the conical surface 13 of ...

no. 2 example

[0069] figure 2 The exhaust device 1 of the second embodiment of the present invention is shown in . Different features between the second embodiment and the first embodiment will be mainly described below. In addition, unless stated to the contrary, the content described in the first embodiment is also applicable to the second embodiment, and will not be described in detail here.

[0070] exist figure 2 In the shown second embodiment, in order to make the assembly of the exhaust device 1 more convenient, a small-diameter portion 17 is provided in the inner cavity 11 of the outer casing 10, for example, a convex ring extending inward is formed on the inner wall of the inner cavity 11, Therefore, the inner diameter of the small-diameter portion 17 is smaller than the inner diameter of other parts of the lumen 11 . In the assembled state, the end of the mandrel 30 facing the spring 20 extends at least into the small diameter portion 17 , or can pass through the small diamet...

no. 3 example

[0082] image 3 The exhaust device 1 of the third embodiment of the present invention is shown in . Different features between the third embodiment and the first and second embodiments will be mainly described below. In addition, unless stated otherwise, the contents described in the first and second embodiments are also applicable to the third embodiment, and will not be described in detail here.

[0083] Such as image 3 As shown, in the exhaust device 1 of the third embodiment, a spring groove 33 is also provided on the mandrel 30 for receiving the spring 20 so as to connect the spring 20 to the mandrel 30 . Different from the first embodiment, in the third embodiment, the spring groove 33 is in the form of a screw groove. Preferably, the pitch of the threads in the thread groove is substantially matched to the pitch between the turns of the spring 20, so that the turns of the spring 20 that fit into the thread groove can be respectively fixed, so that the spring The co...

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Abstract

A tire mold exhaust device includes an outer casing, a mandrel and a spring, an inner cavity is formed in the outer sheath, the mandrel is accommodated in the inner cavity, and can move between a first position and a second position along the axial direction of the outer sheath Movement, in the first position, a gap is formed between the shaft head of the mandrel and the outer casing, and in the second position, there is a sealing fit between the shaft head and the outer casing. A spring is connected to the mandrel to bias the mandrel toward the first position. A first restricting portion and a second restricting portion are formed in the inner cavity, respectively restricting the movement of the mandrel toward the first end of the casing and the movement of the spring toward the second end of the casing. A tire mold including the vent and a method of assembling the vent are also disclosed. The structure of the exhaust device prevents the mandrel from falling off, and can control the stroke range of the mandrel, and also simplifies the assembly of the exhaust device.

Description

technical field [0001] The present invention relates to a tire mold, and further, the present invention relates to an exhaust device for the tire mold. The invention also discloses an assembly method of the exhaust device. Background technique [0002] At present, the production process of tires is roughly as follows: the rubber material is passed through a series of processes to realize tire embryo molding. After the blank is formed, it is necessary to use a tire mold to vulcanize the blank of the tire. During the vulcanization process, it is necessary to vent the air in the inner cavity of the tire mold. The method usually used at present is to set vent holes on the tire mold, and the air in the tire mold is directly discharged through the vent holes. [0003] However, there are some problems with this approach, one of which is that in the process of expelling the air out of the tire mold, some of the rubber material used to form the tire is also squeezed out of the ven...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C33/10B29C33/30B29C35/02
CPCB29C33/10B29C33/305B29C35/02B29D2030/0617B29D30/0606
Inventor 李健张伟杜平王万里冯立新孙鹏臧贻照
Owner GAOMI TONGCHUANG VALVE CORE CO LTD