A mold stripping structure for a bent pipe product

Abstract

The utility model discloses a mould stripping structure for elbow product production, including fixed mould plate and the movable mould plate of fixed mould plate top, the fixed mould plate top is provided with fixed mould ren, the movable mould plate bottom is provided with the movable mould ren of fixed mould ren adaptation, the fixed mould ren is formed with the fixed mould ren between the cavity, and the elbow plastic piece is injection molded in the cavity, the fixed mould plate is removed and is provided with the forming block in fixed mould ren one side, the fixed mould plate is symmetrically provided with two elbow core moulds in fixed mould ren top surface, the fixed mould plate is provided with the core pulling assembly of being connected with two elbow core moulds in the side away from the forming block. The utility model discloses the core pulling assembly drives two elbow core moulds to be extracted from the elbow plastic piece lumen in the arc movement mode to complete the stripping of elbow plastic piece, need not complicated operation, only need to complete the stripping of elbow plastic piece when opening the mould, and the time -consuming is short, and the production efficiency is higher.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to a mold release structure for producing bent pipe products. Background Technology

[0002] Currently, tubular plastic products are widely used in daily life. These products are typically injection molded and require demolding after molding for easy removal. Common tubular demolding mechanisms in injection molds include straight core-pulling mechanisms and side core-pulling mechanisms. However, for curved tubular plastic products, such as water pipe elbows, headphone housings, and sports fan housings, straight core-pulling mechanisms or side core-pulling mechanisms cannot demold them. Existing methods for demolding these products usually involve molding in the mold and then using special equipment, which is cumbersome, time-consuming, and results in low production efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a mold demolding structure for the production of bent pipe products. It does not require complicated operations and can demold the bent pipe plastic parts at the same time as the mold is opened. It is time-saving and has high production efficiency, so as to solve the problems of the above-mentioned background technology that the demolding process of bent pipe plastic products is relatively troublesome, time-consuming and has low production efficiency.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A mold release structure for producing bent pipe products includes a fixed template and a movable template movably disposed on top of the fixed template. The top surface of the fixed template is provided with a fixed mold core, and the bottom surface of the movable template is provided with a movable mold core adapted to the fixed mold core. A cavity is formed between the fixed mold cores, and a bent pipe plastic part is injection molded in the cavity. A forming block is movably disposed on one side of the fixed mold core on the fixed template. Two bent pipe core molds are symmetrically disposed on the top surface of the fixed template and the fixed template is provided with a core-pulling assembly connected to the two bent pipe core molds on the side of the fixed template away from the forming block, for driving the two bent pipe core molds to be pulled out from the cavity of the bent pipe plastic part in an arc-shaped motion.

[0006] Preferably, the core-pulling assembly includes a slide block, two sliders, and two rocker arms. A first groove is provided on one side of the top surface of the fixed mold plate. The slide block is movably disposed in the first groove. Two symmetrical and arc-shaped guide grooves are provided on the top surface of the fixed mold core. The two sliders are movably disposed in their respective guide grooves. One end of each rocker arm is hinged to the slide block, and the other end is connected to the slider. The end of the slider away from the rocker arm is connected to the bent tube core mold.

[0007] Preferably, the lower two side walls of the first slide groove are respectively provided with first limiting grooves, and the lower two sides of the slide block are respectively formed with first protruding edges extending outward therefrom, and the first protruding edges are movably disposed in the first limiting grooves.

[0008] Preferably, the lower side wall of the guide groove is provided with an arc-shaped second limiting groove, and the lower part of the slider is formed with an arc edge extending towards the inner side of the fixed mold core, and the arc edge is movably disposed in the second limiting groove.

[0009] Preferably, the top surface of the fixed template is provided with a second groove on the side opposite to the first groove, the forming block is movably disposed in the second groove, the lower two side walls of the second groove are respectively provided with a third limiting groove, and the lower two sides of the forming block are respectively provided with a second protruding edge extending outward therefrom, the second protruding edge is movably disposed in the third limiting groove.

[0010] Preferably, the top surface of the molding block is provided with a first sliding hole that slopes downward and extends to its bottom surface, and the moving mold plate is provided with a first lever that slopes downward on one side of the moving mold core, and the first lever is movably inserted into the first sliding hole.

[0011] Preferably, the top surface of the slide block has a second sliding hole that slopes downward and extends to its bottom surface, and the moving mold plate has a second lever that is inclinedly arranged on the side of the moving mold core away from the first lever, and the second lever is movably inserted into the second sliding hole.

[0012] Preferably, the top surface of the fixed template is provided with a clearance groove extending to its side, and the bottom end of the second lever extends into the clearance groove through the second sliding hole.

[0013] Preferably, a base plate is provided below the fixed template, the base plate is connected to the bottom end of the fixed template by two oppositely arranged support plates, and an ejection assembly is provided on the base plate.

[0014] Preferably, the ejection assembly includes an ejector plate, an ejector rod, and an ejector insert. The ejector plate is movably disposed between the base plate and the fixed mold plate. The bottom end of the ejector rod is connected to the ejector plate, and the top end of the ejector rod passes upward through the fixed mold plate and extends to the top surface of the fixed mold core. The ejector insert is connected to the top end of the ejector plate, and the side of the ejector insert is connected to the side of the bent plastic part.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting a molding block on one side of the fixed mold core and a core-pulling assembly on the other side of the fixed mold core, when the moving mold plate opens relative to the fixed mold plate, the molding block moves away from the bent tube plastic part, and the core-pulling assembly drives the two bent tube core molds to be pulled out from the cavity of the bent tube plastic part in an arc motion, thereby completing the demolding of the bent tube plastic part and making it easy to remove the bent tube plastic part; no complicated operation is required, and the demolding of the bent tube plastic part can be completed at the same time as the mold opening, which is time-saving and has high production efficiency. Attached Figure Description

[0016] Figure 1 This is a perspective view of the bent pipe plastic part of this utility model;

[0017] Figure 2 This is a perspective view of the demolding structure of a mold for producing bent pipe products according to this utility model;

[0018] Figure 3 This is an exploded view of the demolding structure of a mold for producing bent pipe products according to this utility model;

[0019] Figure 4 This is a perspective view of the moving template of this utility model;

[0020] Figure 5 An exploded view of the template for this utility model;

[0021] Figure 6 This is a perspective view of the mold core of this utility model;

[0022] Figure 7 This is a perspective view of the ejector assembly of this utility model.

[0023] In the diagram: 1. Bending pipe plastic part; 2. Fixed mold plate; 21. First slide groove; 22. First limiting groove; 23. Second slide groove; 24. Third limiting groove; 25. Clearance groove; 3. Moving mold plate; 31. First lever; 32. Second lever; 4. Fixed mold core; 41. Guide groove; 42. Second limiting groove; 5. Moving mold core; 6. Molding block; 61. Second protruding edge; 62. First sliding hole; 7. Bending pipe core mold; 8. Core pulling assembly; 81. Slide block; 811. First protruding edge; 812. Second sliding hole; 82. Slider; 821. Rounded edge; 83. Rocker arm; 9. Base plate; 10. Ejector assembly; 101. Ejector plate; 102. Ejector rod; 103. Ejector insert. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "more than" means two or more, unless otherwise explicitly specified. In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Please see Figure 1-7 A demolding structure for a mold used in the production of bent pipe products includes a fixed template 2 and a movable template 3 movably disposed at the top of the fixed template 2. The bottom surface of the movable template 3 abuts against the bottom surface of the fixed template 2. Please refer to [link / reference]. Figure 3-4 The fixed mold plate 2 has a fixed mold core 4 on its top surface, and the movable mold plate 3 has a movable mold core 5 adapted to the fixed mold core 4 on its bottom surface. A cavity is formed between the fixed mold cores 4, and a bent tube plastic part 1 is injection molded within the cavity. A molding block 6 is movably positioned on one side of the fixed mold core 4 on the fixed mold plate 2. Two bent tube core molds 7 are symmetrically positioned on the top surface of the fixed mold core 4 on the fixed mold plate 2. The two bent tube core molds 7 are inserted into the cavity of the bent tube plastic part 1 to cooperate with the molding block 6, the fixed mold core 4, and the movable mold core 5 to injection mold the bent tube plastic part 1 within the cavity. A core-pulling assembly 8 connected to the two bent tube core molds 7 is provided on the side of the fixed mold plate 2 away from the molding block 6. Please refer to [link to relevant documentation]. Figure 5 The core-pulling assembly 8 is used to drive the two bent tube core molds 7 to be pulled out from the cavity of the bent tube plastic part 1 in an arc motion.

[0027] This invention features a molding block 6 on one side of the fixed mold core 4 and a core-pulling assembly 8 on the other side. When the moving mold plate 3 opens relative to the fixed mold plate 2, the molding block 6 moves away from the bent tube plastic part 1. The core-pulling assembly 8 drives the two bent tube core molds 7 to be pulled out of the cavity of the bent tube plastic part 1 in an arc motion, thereby completing the demolding of the bent tube plastic part 1 and facilitating its removal. No complicated operation is required; the demolding of the bent tube plastic part 1 can be completed at the same time as the mold opening, which is time-saving and has high production efficiency.

[0028] Please see Figure 5-6 The core-pulling assembly 8 includes a slide block 81, two sliders 82, and two rocker arms 83. A first groove 21 is provided on one side of the top surface of the fixed mold plate 2. The slide block 81 is movably disposed in the first groove 21. Two symmetrical and arc-shaped guide grooves 41 are provided on the top surface of the fixed mold core 4. In this embodiment, the sliders 82 are arc-shaped. The two sliders 82 are movably disposed in the corresponding guide grooves 41. One end of each rocker arm 83 is hinged to the slide block 81, and the other end is connected to the slider 82. The end of the slider 82 away from the rocker arm 83 is connected to the bent tube core mold 7.

[0029] Please see Figure 4 as well as Figure 6 After the mold is opened, the slide block 81 moves away from the fixed mold core 4, simultaneously causing the two swing rods 83 to swing open. As the two swing rods 83 open, the slider 82 moves in an arc within the guide groove 41, thereby allowing the two bent tube core molds 7 to be pulled out from the cavity of the bent tube plastic part 1, thus achieving rapid demolding. In this embodiment, the swing rods 83 are hinged to the slide block 81 and the slider 82 respectively via pins.

[0030] Please see Figure 5-6 The lower two side walls of the first slide groove 21 are respectively provided with first limiting grooves 22, and the lower two sides of the slide block 81 are respectively provided with first protruding edges 811 extending outward, and the first protruding edges 811 are movably disposed in the first limiting grooves 22; the lower side wall of the guide groove 41 is provided with an arc-shaped second limiting groove 42, and the lower part of the slider 82 is provided with an arc edge 821 extending inward to the fixed mold core 4, and the arc edge 821 is movably disposed in the second limiting groove 42.

[0031] A second groove 23 is provided on the top surface of the template 2 on the side opposite to the first groove 21. The forming block 6 is movably disposed in the second groove 23. A third limiting groove 24 is provided on the lower two side walls of the second groove 23. A second protruding edge 61 extending outward is formed on the lower two sides of the forming block 6. The second protruding edge 61 is movably disposed in the third limiting groove 24.

[0032] In this embodiment, the first limiting groove 22, the second limiting groove 42 and the third limiting groove 24 have the functions of guiding movement and limiting, so as to facilitate accurate and rapid demolding of the molding block 6 and the two curved core molds 7.

[0033] Please see Figure 3-5 The top surface of the molding block 6 has a first sliding hole 62 that slopes downwards and extends to its bottom surface. The moving mold plate 3 has a first lever 31 that extends downwards on one side of the moving mold core 5, and the first lever 31 is movably inserted into the first sliding hole 62. The top surface of the slide block 81 has a second sliding hole 812 that slopes downwards and extends to its bottom surface. The moving mold plate 3 has a second lever 32 that is inclined on the side of the moving mold core 5 away from the first lever 31, and the second lever 32 is movably inserted into the second sliding hole 812. Please refer to [link / reference]. Figure 2-3 In this embodiment, the top surface of the fixed template 2 is provided with a clearance groove 25 that extends through to its side, and the bottom end of the second lever 32 extends through the second sliding hole 812 into the clearance groove 25.

[0034] Please see Figure 3 as well as Figure 5 When the mold is opened, the moving template 3 moves upward relative to the fixed template 2, and drives the first lever 31 and the second lever 32 to move upward. As the first lever 31 rises, it presses the inner wall of the first sliding hole 62 through its bottom end, thereby causing the molding block 6 to move horizontally to the left, so that the molding block 6 separates from the left side of the bent tube plastic part 1. As the second lever 32 rises, it presses the inner wall of the second sliding hole 812 through its bottom end, thereby causing the slide block 81 to move horizontally to the right. As the slide block 81 moves, it drives the swing rod 83 to swing. As the swing rod 83 swings, it drives the slider 82 to make an arc movement in the guide groove 41, so that the bent tube core mold 7 separates from the right side of the bent tube plastic part 1, thereby completing the demolding.

[0035] Please see Figure 5-7 A base plate 9 is provided below the fixed template 2. The base plate 9 is connected to the bottom end of the fixed template 2 by two opposing support plates. An ejection assembly 10 is provided on the base plate 9. The ejection assembly 10 includes an ejector plate 101, an ejector rod 102, and an ejection insert 103. The ejector plate 101 is movably disposed between the base plate 9 and the fixed template 2. The bottom end of the ejector rod 102 is connected to the ejector plate 101, and the top end of the ejector rod 102 passes upward through the fixed template 2 and extends to the top surface of the fixed mold core 4. The ejection insert 103 is connected to the top end of the ejector plate 101, and the side of the ejection insert 103 is connected to the side of the bent plastic part 1. A power device is provided on the base plate 9 to drive the ejector plate 101 to rise and fall. In this embodiment, the power device is a cylinder or a hydraulic cylinder.

[0036] After the mold is opened, when the molding block 6 and the bent tube core mold 7 are completely separated from the bent tube plastic part 1, the power device is started. The power device drives the ejector plate 101, ejector rod 102 and ejector insert 103 to move upward. The ejector insert 103 drives the bent tube plastic part 1 to separate from the fixed mold core 4 so as to remove the bent tube plastic part 1.

[0037] 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 mold demolding structure for producing bent pipe products, comprising a fixed template (2) and a movable template (3) movably disposed at the top of the fixed template (2), wherein a fixed mold core (4) is disposed on the top surface of the fixed template (2), and a movable mold core (5) adapted to the fixed mold core (4) is disposed on the bottom surface of the movable template (3), wherein a cavity is formed between the fixed mold core (4), characterized in that: A bent tube plastic part (1) is injection molded in the cavity. A molding block (6) is moved on one side of the fixed mold core (4) of the fixed template (2). Two bent tube core molds (7) are symmetrically arranged on the top surface of the fixed mold core (4) of the fixed template (2). A core-pulling assembly (8) connected to the two bent tube core molds (7) is arranged on the side of the fixed template (2) away from the molding block (6), which is used to drive the two bent tube core molds (7) to be pulled out from the cavity of the bent tube plastic part (1) in an arc motion.

2. The demolding structure for the mold used in the production of bent pipe products according to claim 1, characterized in that: The core-pulling assembly (8) includes a slide block (81), two sliders (82) and two rocker arms (83). A first groove (21) is provided on one side of the top surface of the fixed mold plate (2). The slide block (81) is movably disposed in the first groove (21). Two symmetrical and arc-shaped guide grooves (41) are provided on the top surface of the fixed mold core (4). The two sliders (82) are movably disposed in the corresponding guide grooves (41). One end of each rocker arm (83) is hinged to the slide block (81) and the other end is connected to the slider (82). The end of the slider (82) away from the rocker arm (83) is connected to the bent tube core mold (7).

3. The demolding structure for the mold used in the production of bent pipe products according to claim 2, characterized in that: The first sliding groove (21) has a first limiting groove (22) on each of its lower two side walls. The sliding block (81) has a first protruding edge (811) extending outward on each of its lower two sides. The first protruding edge (811) is movably disposed in the first limiting groove (22).

4. The demolding structure for the mold used in the production of bent pipe products according to claim 2, characterized in that: The guide groove (41) has an arc-shaped second limiting groove (42) on one side wall at the lower part, and the slider (82) has an arc edge (821) extending into the inner side of the fixed mold core (4) at the lower part, and the arc edge (821) is movably disposed in the second limiting groove (42).

5. The demolding structure for producing bent pipe products according to claim 2, characterized in that: The top surface of the fixed template (2) is provided with a second groove (23) on the side opposite to the first groove (21). The forming block (6) is movably disposed in the second groove (23). The lower two side walls of the second groove (23) are respectively provided with a third limiting groove (24). The lower two sides of the forming block (6) are respectively provided with a second protruding edge (61) extending outward. The second protruding edge (61) is movably disposed in the third limiting groove (24).

6. The mold release structure for producing bent pipe products according to any one of claims 1-5, characterized in that: The top surface of the molding block (6) is provided with a first sliding hole (62) that is inclined downward and extends through to its bottom surface. The moving template (3) is provided with a first lever (31) that extends downward on one side of the moving mold core (5). The first lever (31) is movably inserted into the first sliding hole (62).

7. The demolding structure for producing bent pipe products according to claim 3, characterized in that: The top surface of the slide block (81) is provided with a second sliding hole (812) that is inclined downward and extends through to its bottom surface. The moving template (3) is provided with a second lever (32) on the side of the moving mold core (5) away from the first lever (31). The second lever (32) is movably inserted into the second sliding hole (812).

8. The demolding structure for the mold used in the production of bent pipe products according to claim 7, characterized in that: The top surface of the fixed template (2) is provided with a clearance groove (25) that extends through to its side, and the bottom end of the second lever (32) extends through the second sliding hole (812) into the clearance groove (25).

9. The mold release structure for producing bent pipe products according to any one of claims 1-5, characterized in that: A base plate (9) is provided below the fixed template (2). The base plate (9) is connected to the bottom end of the fixed template (2) by two oppositely arranged support plates. An ejection assembly (10) is provided on the base plate (9).

10. The mold release structure for producing bent pipe products according to claim 9, characterized in that: The ejection assembly (10) includes an ejector plate (101), an ejector rod (102), and an ejector insert (103). The ejector plate (101) is movably disposed between the base plate (9) and the fixed template (2). The bottom end of the ejector rod (102) is connected to the ejector plate (101). The top end of the ejector rod (102) passes upward through the fixed template (2) and extends to the top surface of the fixed mold core (4). The ejector insert (103) is connected to the top end of the ejector plate (101). The side of the ejector insert (103) is connected to the side of the bent plastic part (1).

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