Core pulling mechanism in fixed mold

Abstract

The utility model discloses a fixed mold in-mold core-pulling mechanism which comprises an upper fixing plate, a female mold plate is fixedly installed on one side of the upper fixing plate, a male mold plate is connected to the end, away from the upper fixing plate, of the female mold plate, the side, away from the female mold plate, of the male mold plate abuts against one ends of a plurality of springs, and the other ends of the springs abut against an upper ejector plate. A lower ejector plate is fixedly installed on the side, away from the spring, of the upper ejector plate, mold feet are arranged on the peripheral side of the lower ejector plate, one ends of the mold feet abut against the male mold plate, and the other ends of the mold feet abut against the lower fixing plate; the center of the upper fixing plate is fixedly sleeved with a positioning ring, a sprue bush is fixedly installed in the positioning ring, the end, away from the positioning ring, of the sprue bush is connected with a female mold core, a plurality of core pulling inserts are arranged on the female mold core, the female mold core is sleeved with a female mold plate, and a male mold core is arranged at the end, away from the sprue bush, of the female mold core. A plurality of resin opening and closing devices are respectively mounted on the male mold core, one end of each resin opening and closing device is connected with the male mold plate, a plurality of ejector pins are slidably sleeved in the male mold core, and one end of each ejector pin is fixedly connected with the upper ejector plate.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a core-pulling mechanism for a fixed mold. Background Technology

[0002] A mold is a set of molds and tools used in industrial production to obtain desired products through methods such as injection molding, blow molding, extrusion, die casting, forging, smelting, and stamping. In short, a mold is a tool used to create shaped objects; this tool is composed of various parts, and different molds are composed of different parts. It primarily achieves the shaping of objects by changing the physical state of the material being molded.

[0003] In existing injection molds, the product tends to stick to the master mold during production, which increases the risk of mold damage. To address this issue, we propose a core-pulling mechanism within the fixed mold. Utility Model Content

[0004] The purpose of this invention is to provide a core-pulling mechanism within a fixed mold to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fixed mold in-mold core-pulling mechanism, comprising an upper fixed plate, a female template fixedly installed on one side of the upper fixed plate, a male template connected to the end of the female template away from the upper fixed plate, abutting one end of several springs on the side of the male template away from the female template, the other ends of the springs abutting an upper ejector plate, a lower ejector plate fixedly installed on the side of the upper ejector plate away from the springs, and mold feet provided on the periphery of the lower ejector plate, one end of the mold feet abutting the male template, and the other end of the mold feet abutting the lower fixed plate;

[0006] A positioning ring is fixedly sleeved at the center of the upper fixed plate. A sprue bushing is fixedly installed inside the positioning ring. The end of the sprue bushing away from the positioning ring is connected to a female mold core. The female mold core is provided with several core pullers. The female mold core is sleeved inside the female mold plate. A male mold core is provided at the end of the female mold core away from the sprue bushing. Several resin openers and closers are installed on the male mold core. One end of the resin openers and closers is connected to the male mold plate. Several ejector pins are slidably sleeved inside the male mold core. One end of each ejector pin is fixedly connected to the upper ejector plate.

[0007] Preferably, at least four springs are provided and arranged symmetrically in pairs, and each spring is fitted with a guide rod.

[0008] Preferably, the male template is fixedly installed to the lower fixing plate by long bolts.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] 1. By increasing the core pulling insert, the injection molded product will not be suctioned to the mold;

[0011] 2. The plastic product is not suctioned to the mold, and the mold will not be damaged during production;

[0012] 3. The yield of the product is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a schematic view of the structure of the present application;

[0014] Figure 2 is a schematic view of the structure of the present application;

[0015] Figure 3 is a schematic view of the structure of the present application;

[0016] Figure 4 is a schematic view of the structure of the present application.

[0017] In the figure: upper fixed plate 1, female mold plate 2, male mold plate 3, mold foot 4, upper ejection plate 5, lower ejection plate 6, lower fixed plate 7, positioning ring 8, female mold core 9, male mold core 10, core pulling insert 11, spring 12, support column 13, ejector pin 14, resin on-off device 15, injection port bushing 16, equal height limiting bolt 17. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] Embodiment 1

[0020] Referring to Figure 1 , 2 , the first embodiment of the present application provides a mold core pulling mechanism, which comprises an upper fixed plate 1, a female mold plate 2 is fixedly installed on one side of the upper fixed plate 1, a male mold plate 3 is connected to one end of the female mold plate 2 away from the upper fixed plate 1, one end of the male mold plate 3 away from the female mold plate 2 abuts against a plurality of springs 12, the other end of the spring 12 abuts against an upper ejection plate 5, the upper ejection plate 5 is fixedly installed on one side of the upper ejection plate 5 away from the spring 12, a lower ejection plate 6 is provided on the periphery of the lower ejection plate 6, one end of the mold foot 4 abuts against the male mold plate 3, and the other end of the mold foot 4 abuts against the lower fixed plate 7;

[0021] A positioning ring 8 is fixedly sleeved at the center of the upper fixed plate 1. A sprue bushing 16 is fixedly installed inside the positioning ring 8. The end of the sprue bushing 16 away from the positioning ring 8 is connected to the female mold core 9. Several core pullers 11 are provided on the female mold core 9. The female mold core 9 is sleeved inside the female mold plate 2. A male mold core 10 is provided at the end of the female mold core 9 away from the sprue bushing 16. Several resin openers 15 are installed on the male mold core 10. One end of the resin opener 15 is connected to the male mold plate 3. Several ejector pins 14 are slidably sleeved inside the male mold core 10. One end of each ejector pin 14 is fixedly connected to the upper ejector plate 5.

[0022] The female mold plate 2 and male mold plate 3 are joined together, so that the female mold core 9 and male mold core 10 are merged, forming an injection cavity. The injection equipment is connected through the positioning ring 8, and the injection liquid is supplied through the injection port bushing 16 for injection molding. After injection molding, the demolding operation is performed. The female mold core 9 is increased with a slope and movable core puller 11. By adding the core puller 11, the injection molded product will no longer have the situation of sticking to the mold. The female mold plate 2 is fixedly installed on the upper fixed plate 1 by the equal height limit bolt 17 for easy adjustment.

[0023] Example 2

[0024] Reference Figures 1-4 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment. Specifically, at least four springs 12 are provided and arranged symmetrically in pairs. Each spring 12 is fitted with a guide rod. Through the elastic force of the springs 12, the upper ejector plate 5 can be easily reset.

[0025] Specifically, the male template 3 is fixed to the lower fixing plate 7 by long bolts, which facilitates the disassembly and replacement of the male template 3.

[0026] Example 3

[0027] Reference Figures 1-4 This is the third embodiment of the present invention. Based on the above two embodiments, in use, the female template 2 and the male template 3 are combined together, so that the female mold core 9 and the male mold core 10 are merged, forming an injection cavity between them. The injection equipment is connected through the positioning ring 8, and the injection liquid is supplied through the injection port bushing 16 for injection molding. After injection molding is completed, demolding is performed. The female mold core 9 is increased with a slope and movable core puller 11. By adding the core puller 11, the injection molded product will no longer have the situation of adhering to the mold. The female template 2 is fixedly installed on the upper fixed plate 1 by the equal height limit bolt 17 for easy adjustment.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A core-pulling mechanism for a fixed mold, comprising an upper fixed plate (1), characterized in that: A female template (2) is fixedly installed on one side of the upper fixed plate (1). A male template (3) is connected to the end of the female template (2) away from the upper fixed plate (1). The side of the male template (3) away from the female template (2) abuts against one end of several springs (12). The other ends of the springs (12) abut against the upper ejector plate (5). A lower ejector plate (6) is fixedly installed on the side of the upper ejector plate (5) away from the springs (12). A mold foot (4) is provided on the periphery of the lower ejector plate (6). One end of the mold foot (4) abuts against the male template (3), and the other end of the mold foot (4) abuts against the lower fixed plate (7). A positioning ring (8) is fixedly sleeved at the center of the upper fixed plate (1). A sprue bushing (16) is fixedly installed inside the positioning ring (8). A female mold core (9) is connected to the end of the sprue bushing (16) away from the positioning ring (8). A plurality of core pullers (11) are provided on the female mold core (9). The female mold core (9) is sleeved inside the female mold plate (2). A male mold core (10) is provided at the end of the female mold core (9) away from the sprue bushing (16). A plurality of resin openers (15) are installed on the male mold core (10). One end of the resin opener (15) is connected to the male mold plate (3). A plurality of ejector pins (14) are slidably sleeved inside the male mold core (10). One end of each ejector pin (14) is fixedly connected to the upper ejector plate (5).

2. The in-mold core-pulling mechanism according to claim 1, characterized in that: At least four springs (12) are provided and arranged symmetrically in pairs, and each spring (12) is fitted with a guide rod.

3. The in-mold core-pulling mechanism according to claim 1, characterized in that: The male template (3) is fixedly installed to the lower fixing plate (7) by long bolts.

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