Demolding mechanism

A technology of demolding mechanism and template, applied in the direction of molding machine, molding machine parts, casting molding equipment, etc., can solve the problems of easy collapse of runner, difficult core pulling of longitudinal runner, inability to adapt to production needs, etc. Small mold opening stroke, which is beneficial to the effect of mold drafting

Active Publication Date: 2020-04-03
安庆海威尔机械有限公司
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Problems solved by technology

[0002] Piston ring sand casting is to stack multiple sand molds together and use longitudinal runners to realize the connection of each cavity. However, during the

Method used

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[0028] In order to make the objectives and advantages of the present invention clearer, the present invention will be specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention, and does not strictly limit the protection scope of the specific claim of the present invention.

[0029] Such as Figure 1-3 As shown, a six-station sand molding machine includes a rotary support 10 that is rotatably arranged on a machine base 101 along a vertical axis, and the rotary support 10 is provided with equidistant intervals along the circumferential direction on the peripheral surface of the rotary support 10 Six sand molds 20, the side of the rotary support 10 corresponds to the position of the six sand molds 20, respectively. There are a mold frame feeding station 11, a mold frame closing station 12, a sand filling station 13, and a reserved manual inspection...

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Abstract

The invention belongs to the field of automobile part production and processing and particularly relates to a demolding mechanism comprising an upper mold plate and a lower mold plate which are arranged in the vertical direction in an open-close mode. A mandrel for forming a sand mold center runner is arranged in the center of the lower mold plate. The mandrel and a core hole formed in the centerof the lower mold plate are in sliding fit in the vertical direction, and a first elastic unit is arranged between the mandrel and the lower mold plate and is used for driving the mandrel to pop up relative to the lower mold plate. The side wall of the mandrel is further provided with an annular groove. A clamping plate arranged slidably in the radial direction of the mandrel is arranged in the lower mold plate. A second elastic unit is arranged between the clamping plate and the lower mold plate. A telescopic airbag is further arranged between the clamping plate and the lower mold plate. According to the demolding mechanism, the mandrel is of an elastic structure, the lower mandrel is flush with the surface of molding sand during sand spreading so as to ensure the pass-through longitudinal runner, in addition, in the extrusion forming process, the mandrel contracts downwards under extrusion of a pressing column, the mandrel and the pressing column achieve mold opening to the upper andlower sides correspondingly during mold opening, the mold opening stroke of the mandrel is reduced, and mold pulling is facilitated better.

Description

technical field [0001] The invention belongs to the field of production and processing of auto parts, and in particular relates to a demoulding mechanism. Background technique [0002] Piston ring sand casting is to stack multiple sand molds together and use longitudinal runners to realize the connection of the cavities. However, during the sand molding process, the longitudinal runners are difficult to core-pulling, and the runners are prone to collapse, which cannot meet the production needs. Contents of the invention [0003] The object of the present invention is to provide a demoulding mechanism which facilitates demoulding. [0004] The technical scheme that the present invention takes is specifically as follows: [0005] A demoulding mechanism, comprising an upper template and a lower template that are opened and closed in the vertical direction, a convex mold for forming a sand mold cavity is arranged on the top surface of the lower template, and a punch is arrang...

Claims

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Application Information

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IPC IPC(8): B22C11/04B22C17/00B22C9/24B22C19/00
CPCB22C9/24B22C11/04B22C17/00B22C19/00
Inventor 赵文飞陈炜华
Owner 安庆海威尔机械有限公司
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