Insert positioning device of injection mold

Abstract

The invention discloses an insert positioning device of an injection mold, which comprises an A positioning sliding block (1), an A oblique sliding foot (11), a B positioning sliding block (2), a B oblique sliding foot (21), an ejection plate (3) and a connecting rod (4). According to the device, the A positioning sliding block is provided with an A molding surface and the A oblique sliding foot;the B positioning sliding block is provided with a B molding surface and the B oblique sliding foot; the A oblique sliding foot, the B oblique sliding foot and the connecting rod are fixed on the ejection plate; the upper parts of the A positioning sliding block and the B positioning sliding block penetrate through a movable mold support plate; the A molding surface and the B molding surface protrude out of the movable mold support plate; the upper part of the connecting rod penetrates through the movable mold support plate and is fixedly connected with a longitudinal cavity sliding block; theA molding surface and the B molding surface are located at the front end of a rubber strip; during operation, the A positioning sliding block and the B positioning sliding block extend during mold opening and retract during mold assembly; the A molding surface and the B molding surface position the front end of a punching rabbet of the rubber strip to achieve injection molding of an insert product such as a sealing strip; and the purposes of reducing a bad product rate, improving efficiency and lowering cost are achieved.

Description

technical field [0001] The invention relates to an injection mold, in particular to an insert positioning device for an injection mold used for positioning an insert in an insert injection mold. Background technique [0002] Description: Rubber and plastic seals are a kind of rubber and plastic products used for automobile sealing, referred to as seals. The seals are first made into continuous long rubber strips by extrusion molding, and then the long rubber strips are cut into sections according to the requirements of the product. Afterwards, the rubber strip is used as an insert, and the rubber strip is connected or sealed by insert injection molding, and finally made into a sealing product. The injection molding part of the connection molding or sealing molding called injection molded body, see Figure 7 The difficulty of insert injection molding seal products is the positioning of the rubber strip as an insert in the mold. The positioning of the rubber strip determines t...

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Problems solved by technology

[0002] Description: Rubber and plastic seals are a kind of rubber and plastic products used for automobile sealing, referred to as seals. The seals are first made into continuous long rubber strips by extrusion molding, and then the long rubber strips are cut into sections according to the requirements of the product. Afterwards, the rubber strip is used as an insert, and the rubber strip is connected or sealed by insert injection molding, and finally made into a sealing product. The injection molding part of the connection molding or sealing molding called injection molded body, see Figure 7 The difficulty of insert injection molding seal products is the positioning of the rubber strip as an insert in the mold. The positioning of the rubber strip determines the accuracy of the molding size of the seal product and the operability of mold production; the rubber strip in the mold Positioning, the existing technology adopts the rear end positioning, that is, based on the characteristics of the rubber strip punching and cutting, the positioning device is set at the rear end of the forming part. The advantage is that the mold structure is simple, and the disadvantage is that the positioning is unstable and the error is large , it is easy to produce defective products, and the production process relies too much on the proficiency of manual operation, resulting in low production efficiency and high overall cost; therefore, the existing technology has the problems and deficiencies of high defective product rate, low efficiency, and high cost

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