A slider latent injection molding demolding mechanism

Abstract

The utility model discloses a kind of sliding block lurks into glue's stripping mechanism, including the die core being arranged on lower mould plate, sliding block and sliding block seat;The top surface of sliding block is shaped with runner;The bottom surface of runner is vertically shaped with needle hole through to the top surface of sliding block, needle is arranged in needle hole;Lower mould plate is fixedly installed with insert block, insert block is shaped with arc surface, the low end of needle is always elastically contacted with the arc surface of insert block and cooperates;Arc surface has highest point position and lowest point position;In the process of sliding from the lowest point position to the highest point position of arc surface by the bottom end of needle, the needle gradually moves upwards until the nozzle head in runner is ejected out.The utility model is simple in structure and sliding block does not need accurate positioning, mould works stably and is not prone to die clashing, and it solves the problem of large nozzle mould sliding block lurks into glue application.

Claims

1. A demolding mechanism for a sliding block with a submerged injection mechanism, comprising a mold core (2), a sliding block (3), and a sliding block seat (4) disposed on a lower mold plate (1); the top surface of the sliding block (3) is formed with a flow channel (3a) for injecting glue into the product cavity in the mold core (2); characterized in that: The bottom surface of the flow channel (3a) is vertically formed with a pin hole (3b) that extends to the bottom surface of the slider (3). A pin (5) is provided in the pin hole (3b) and can move up and down. An insert (6) is fixedly installed on the lower template (1). The insert (6) is formed with an arc surface (61). The lower end of the pin (5) is always elastically engaged with the arc surface (61) of the insert (6). The arc surface (61) has a highest point (611) and a lowest point (612). As the bottom end of the pin (5) slides from the lowest point (612) to the highest point (611) of the arc surface (61), the pin (5) gradually moves upward until it pushes out the sprue head (9) in the flow channel (3a).

2. The demolding mechanism for a slider-type submerged injection system according to claim 1, characterized in that: The top surface of the lower template (1) is formed with a mounting cavity for positioning and installing the insert (6), and the insert (6) is tightened and fixed in the mounting cavity of the lower template (1) by a pull-down bolt (L1).

3. The demolding mechanism for a slider-type latent injection system according to claim 2, characterized in that: The bottom surface of the slider (3) is formed with a pressure block mounting cavity (31). A pressure block (7) for limiting the ejector pin (5) is fixedly installed in the pressure block mounting cavity (31) by a clamping bolt (L2). The pressure block (7) is formed with a guide sliding hole (7a). The lower end of the ejector pin (5) slides through and cooperates with the guide sliding hole (7a).

4. The demolding mechanism for a slider-type submerged injection system according to claim 3, characterized in that: The lower part of the ejector pin hole (3b) is enlarged to form a spring cavity (3c), and a reset spring (8) is provided in the spring cavity (3c) and fitted on the ejector pin (5) for the spring force to drive the ejector pin (5) to move downward and reset.

5. A demolding mechanism for a slider-type submerged injection system according to claim 4, characterized in that: The ejector pin (5) is formed with an annular shoulder (51); when the bottom end of the ejector pin (5) is engaged with the lowest point (612) of the arc surface (61), the bottom surface of the annular shoulder (51) is engaged with the periphery of the top surface of the guide slide hole (7a).

6. The demolding mechanism for a slider-type submerged injection according to claim 5, characterized in that: The top end of the reset spring (8) is positioned and engaged with the annular surface at the bottom of the spring cavity (3c), and the bottom end of the reset spring (8) is abutted against the top surface of the annular shoulder (51).

7. A demolding mechanism for a slider-type submerged injection system according to claim 6, characterized in that: The bottom surface of the ejector pin (5) is a spherical arc surface.

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