Air ejection device for bellows
A technology of pneumatic demoulding and demoulding device, which is applied to corrugated products, tubular items, other household appliances, etc., can solve the problems of affecting service life, aggravating mold wear, bellows and mold damage, etc., and prolonging service life. , reduce wear and improve quality
Active Publication Date: 2015-02-11
江阴市农业药械厂
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Problems solved by technology
The bellows are usually manufactured by blow molding or injection molding. The bellows made by blow molding have poor cost density and are easily damaged by wear during use, which greatly affects their service life.
The bellows made by injection molding are widely recognized by users because of their high density and longer service life. However, the bellows made by injection molding have the problem of difficult demoulding. Conventional injection molding generally uses Pushing out the bellows manually or using the mold core rod will easily cause damage to the bellows and the mold due to friction during the demoulding process, which not only affects the quality of the product, but also aggravates the wear of the mold and affects the service life of the mold
Method used
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[0022] see Figure 1~9 , a bellows pneumatic demoulding device related to the present invention, the demoulding device includes a fixed mold 1 and a core rod 3 embedded in the fixed mold 1, a counterbore 1.1 is provided at the top of the fixed mold 1, and a counterbore 1.1 is opened at the bottom of the fixed mold 1. An air chamber 1.2 is provided, and an air channel 1.3 is arranged in the middle to communicate the counterbore 1.1 with the air chamber 1.2, and an air inlet 1.4 is provided at the bottom of the air chamber 1.2 (such as Figure 5 shown), the core rod 3 includes a connecting rod 3.1 inserted into the air channel 1.3, and the diameter of the connecting rod 3.1 is smaller than the diameter of the air channel 1.3, the top of the connecting rod 3.1 is covered with a plug 3.2, the bottom A stopper 3.3 is connected to form a structural member with an "I" shape in cross section (such as Figure 6 shown), the plug 3.2 and the stopper 3.3 are respectively placed in the co...
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The invention relates to an air ejection device for a bellows. The air ejection device comprises a fixed mold (1) and a core rod (3) inserted into the fixed mold (1). The top of the fixed mold (1) is provided with a counter-bored hole (1.1). The bottom of the fixed mold (1) is provided with an air cavity (1.2). The middle of the fixed mold (1) is provided with an air passage (1.3) for communicating the counter-bored hole (1.1) and the air cavity (1.2). The bottom of the air cavity (1.2) is provided with an air inlet hole (1.4). An injection molded bellows (5) is coated on a movable mold (2). The injection molded bellows (5) has a barrel structure of which the top is inclosed. The air ejection device for a bellows can realize safe and reliable air ejection of an injection molded bellows.
Description
technical field [0001] The invention relates to a demoulding device, in particular to a device for pneumatically demoulding an injection-molded bellows. Background technique [0002] In the industrial field, bellows have a wide range of applications, and it is often necessary to use bellows as the sealing jacket of the flexible coupling, the flexible coupling itself, and the collapsible container. Bellows are usually manufactured by blow molding or injection molding. The bellows manufactured by blow molding have poor cost and density, and are easily damaged by wear during use, which greatly affects their service life. The bellows made by injection molding are widely recognized by users because of their high density and longer service life. However, the bellows made by injection molding have the problem of difficult demoulding. Conventional injection molding generally uses Pushing out the bellows manually or using the mold core rod will easily cause damage to the bellows and...
Claims
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IPC IPC(8): B29C45/43B29L16/00B29L23/00
Inventor 吴晓龙
Owner 江阴市农业药械厂