Outer core-pulling inverted demolding structure for injection mold

Abstract

The utility model provides an outer core-pulling inverted demolding structure for an injection mold, and aims to solve the problems that the product appearance of part of existing injection molds has special requirements, a sprue cannot be made, and a complex structure is inconvenient to form in the injection mold, and the outer core-pulling inverted demolding structure for the injection mold comprises a movable mold plate and a master plate, a fixing plate is fixedly installed on the front side of the master plate, a fixing groove is formed in one side of the fixing plate, a multifunctional collection block is fixedly installed in the fixing groove, and the outer side of the multifunctional collection block is slidably sleeved with a middle plate. The appearance side of the mold is arranged on the inner wall of the bottom of the mold cavity, slurry is injected from the back face of the mold, the ejector plate is arranged on one side of the injection molding channel, reverse opening of the mold is facilitated, mold inversion operation is achieved, the appearance quality of the mold is guaranteed, and the two long plates are driven to move, so that vertical movement of the movable plate and the core body is controlled, and the production efficiency is improved. And the core body can be conveniently inserted into a mold cavity, so that a complex structure is formed in the mold.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an external core-pulling and demoulding structure for injection molds. Background Art

[0002] An injection mold is a special mold used for plastic injection molding. It is a common tool in the plastics industry and is used to produce various plastic products, such as home appliance housings, auto parts, and daily necessities. The injection mold is designed with a cavity whose shape and size match the final product. In the injection mold, the core and cavity are key components used to form the shape of the final product. The cavity is the part that forms the product's appearance, while the core is the part that forms the product's internal structure. When the mold is closed, the combination of the cavity and the core forms the overall outline of the product. Injection molds play an important role in modern industry and support the large-scale production and supply of many plastic products.

[0003] The injection port is where the plastic material enters the mold and is usually connected to the mold plate. The ejection system is used to discharge the molded plastic product from the mold. These systems are usually on the fixed mold plate, located on a different side from the injection port, so as to push the molded part out of the cavity.

[0004] However, in the process of realizing the embodiments of the present invention, the inventors found that there are at least the following defects in the background technology: some existing injection molds have special requirements for the product appearance, cannot be used as gates, and are not convenient for forming complex structures inside the injection mold. Therefore, we propose an external core-pulling and reverse demolding structure for the injection mold to solve this problem. Utility Model Content

[0005] The purpose of the utility model is to solve the problems raised in the above background technology, and to propose an external core-pulling and reverse demoulding structure for an injection mold.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A core-pulling and demolding structure for an injection mold comprises a movable template and a support template, a fixed plate fixedly mounted on the front side of the support template, a fixed groove provided on one side of the fixed plate, a multifunctional assembly block fixedly mounted in the fixed groove, an intermediate plate provided on the outer sliding sleeve of the multifunctional assembly block, a mold plate fixedly mounted on the rear side of the movable template, the rear side of the mold plate movably abutting against the front of the intermediate plate, a mold cavity provided in the mold plate, a socket provided on the top of the mold plate, the socket being communicated with the mold cavity, a movable plate slidably mounted on the top of the mold plate, a core body provided on one side of the movable plate.

[0008] In a preferred embodiment, side columns are fixedly installed at the four front corners of the support plate, the side columns are fixedly connected to the fixed plate, a guide rod is fixedly installed on one side of the side column, and the middle plate and the mold plate are slidably mounted on the outside of multiple guide rods.

[0009] In a preferred embodiment, a plurality of connecting plates are fixedly mounted on the rear side of the movable template, and the connecting plates are fixedly connected to the mold plate. A mounting plate is fixedly mounted on the front side of the movable template, and a plurality of mounting holes are opened on the front side of the mounting plate.

[0010] In a preferred embodiment, the left and right sides of the mold plate and the middle plate are respectively fixed with an active plate and a driven plate by bolts, and the outer side of the active plate is fixedly sleeved with a rectangular frame, and the rectangular frame is slidably sleeved on the outer side of the corresponding driven plate, and the front inner wall of the rectangular frame is in tight contact with the front side of the corresponding driven plate.

[0011] In a preferred embodiment, an injection molding tube is fixedly installed on the support plate, a front end of the injection molding tube is fixedly connected to the fixed plate, and an injection molding channel is connected between the injection molding tube and the multifunctional assembly block.

[0012] In a preferred embodiment, the outer sliding sleeve of the injection molding tube is provided with a displacement plate, and traction plates are fixedly installed on the left and right sides of the displacement plate. The traction plates are fixedly connected to the middle plate by screws. Two built-in grooves are provided at the bottom of the multifunctional assembly block, and an ejection plate is sealed and slidably installed in the built-in grooves. An extension plate is fixedly installed on the top of the ejection plate, and one side of the extension plate passes through the multifunctional assembly block and the fixed plate and is fixedly connected to the displacement plate.

[0013] In a preferred embodiment, two long plates are slidably installed on the mold plate, a short plate is fixedly installed on one side of the long plate, the short plate is fixedly connected to the movable plate, a sealing plate is provided on one side of the movable plate, the sealing plate is fixedly connected to the core body, and a plurality of snap-in grooves are provided on the top of the mold plate, and the plurality of snap-in grooves are respectively adapted to the short plate and the sealing plate.

[0014] The beneficial effects of the utility model are:

[0015] 1. By setting the appearance side of the mold on the bottom inner wall of the mold cavity, injecting slurry from the back of the mold, and setting the ejector plate on one side of the injection channel, it is convenient to reverse the mold and realize the flip mold operation, thereby ensuring the appearance quality of the mold.

[0016] 2. By driving the movement of the two long plates, the vertical movement of the movable plate and the core is controlled. After the movable plate and the support plate are closed, the core is easily inserted into the mold cavity to form the required structure or specific shape in the mold, thereby improving production efficiency and product quality, and reducing the need for subsequent processing steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of an external core-pulling and reverse demoulding structure for an injection mold proposed by the present invention;

[0018] Figure 2 This is a schematic cross-sectional view of an external core-pulling and reverse demoulding structure for an injection mold proposed by the present invention;

[0019] Figure 3 for Figure 1 A partial enlarged view of part A;

[0020] Figure 4 for Figure 2 A partial enlarged view of part B.

[0021] The reference numerals are as follows:

[0022] In the figure: 1. Moving plate; 2. Support plate; 3. Fixed plate; 4. Multifunctional assembly block; 5. Middle plate; 6. Mold plate; 7. Mold cavity; 8. Socket; 9. Moving plate; 10. Core; 11. Guide rod; 12. Mounting plate; 13. Active plate; 14. Driven plate; 15. Rectangular frame; 16. Injection tube; 17. Displacement plate; 18. Pulling plate; 19. Ejector plate; 20. Extension plate; 21. Long plate; 22. Snap-in groove. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] Reference Figure 1-4 , an external core-pulling and demolding structure for an injection mold, comprising a movable template 1 and a support template 2, a fixed plate 3 is fixedly installed on the front side of the support template 2, a fixed groove is opened on one side of the fixed plate 3, a multifunctional assembly block 4 is fixedly installed in the fixed groove, an outer sliding sleeve of the multifunctional assembly block 4 is provided with an intermediate plate 5, a mold plate 6 is fixedly installed on the rear side of the movable template 1, the rear side of the mold plate 6 is movably abutted with the front of the intermediate plate 5, a mold cavity 7 is provided in the mold plate 6, a socket 8 is opened on the top of the mold plate 6, the socket 8 is connected with the mold cavity 7, a movable plate 9 is slidably installed on the top of the mold plate 6, and a core 10 is provided on one side of the movable plate 9.

[0025] like Figure 2As shown, in the present invention, side columns are fixedly installed at the four front corners of the support plate 2, the side columns are fixedly connected to the fixed plate 3, a guide rod 11 is fixedly installed on one side of the side column, and the middle plate 5 and the mold plate 6 are both slidably mounted on the outside of multiple guide rods 11.

[0026] like Figure 1 As shown, in the present invention, a plurality of connecting plates are fixedly installed on the rear side of the movable template 1, and the connecting plates are fixedly connected to the mold plate 6. A mounting plate 12 is fixedly installed on the front side of the movable template 1, and a plurality of mounting holes are opened on the front side of the mounting plate 12.

[0027] It should be noted that the movable template is connected to the hydraulic system through a mounting plate, and the hydraulic system controls the forward and backward displacement of the movable template to achieve demoulding operations.

[0028] In the present invention, the left and right sides of the mold plate 6 and the intermediate plate 5 are respectively fixed with an active plate 13 and a driven plate 14 by bolts. The outer side of the active plate 13 is fixedly sleeved with a rectangular frame 15, and the rectangular frame 15 is slidably sleeved on the outer side of the corresponding driven plate 14. The front inner wall of the rectangular frame 15 is in close contact with the front side of the corresponding driven plate 14.

[0029] The hydraulic system drives the movable template 1 to move forward a certain distance, so that the movable template 1 is separated from the multifunctional assembly block 4. The movable template 1 continues to move forward through the cooperation of the rectangular frame 15 and the driven plate 14. The intermediate plate 5 drives the ejection plate 19 forward through the cooperation of the displacement plate 17 and the extension plate 20 to eject the plastic product, realizing the demoulding function. The same mechanism realizes the functions of mold separation and ejection of plastic products.

[0030] like Figure 2 、 Figure 4 As shown, in the present invention, an injection molding tube 16 is fixedly mounted on the template 2 , the front end of the injection molding tube 16 is fixedly connected to the fixed plate 3 , and an injection molding channel is connected between the injection molding tube 16 and the multifunctional assembly block 4 .

[0031] like Figure 1 、 Figure 3 As shown, in the utility model, the outer sliding sleeve of the injection tube 16 is provided with a displacement plate 17, and traction plates 18 are fixedly installed on the left and right sides of the displacement plate 17. The traction plate 18 is fixedly connected to the middle plate 5 by screws. Two built-in grooves are provided at the bottom of the multifunctional assembly block 4, and an ejection plate 19 is sealed and slidably installed in the built-in grooves. An extension plate 20 is fixedly installed on the top of the ejection plate 19. One side of the extension plate 20 passes through the multifunctional assembly block 4 and the fixed plate 3 and is fixedly connected to the displacement plate 17.

[0032] like Figure 1As shown, in the utility model, two long plates 21 are slidably installed on the mold plate 6, a short plate is fixedly installed on one side of the long plate 21, the short plate is fixedly connected to the movable plate 9, a sealing plate is provided on one side of the movable plate 9, and the sealing plate is fixedly connected to the core body 10, and a plurality of snap-in grooves 22 are provided on the top of the mold plate 6, and the plurality of snap-in grooves 22 are respectively adapted to the short plate and the sealing plate.

[0033] It should be noted that the core body 10 enters from the outside after the mold is closed and forms the required specific shape inside the plastic product. The long plate 21 is connected to the external traction system to drive the movable plate 9 to move, and the socket 8 of the core body 10 is sealed through a variety of snap-in grooves 22 in cooperation with the sealing plate and the short plate.

[0034] The working principle of the present utility model is as follows: the two long plates 21 are driven downward by the traction system, thereby driving the movable plate 9, the sealing plate and the core body 10 to move downward, so that the sealing plate is clamped into the clamping groove 22 to seal the jack 8, so that the core body 10 is located inside the mold cavity 7, and the raw material is injected into the mold cavity 7 through the injection tube 16. After the plastic product is formed for a period of time, the two long plates 21 are driven upward by the traction system to separate the core body 10 from the mold plate 6, and the movable template 1 is driven forward by the hydraulic system, thereby driving the two rectangular frames 15 to move forward, and the rear inner wall of the rectangular frame 15 is brought into contact with the driven plate 14 to drive the middle plate 5 to move forward, thereby driving the traction plate 18 and the displacement plate 17 to move forward together, thereby driving the two extension plates 20 and the ejection plate 19 to move forward to eject the plastic product, thereby realizing the demoulding operation.

[0035] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An external core-pulling and reverse demoulding structure for an injection mold, characterized in that: The invention comprises a movable plate (1) and a support plate (2), wherein a fixed plate (3) is fixedly installed on the front side of the support plate (2), a fixed groove is provided on one side of the fixed plate (3), a multifunctional assembly block (4) is fixedly installed in the fixed groove, an outer sliding sleeve of the multifunctional assembly block (4) is provided with an intermediate plate (5), a mold plate (6) is fixedly installed on the rear side of the movable plate (1), the rear side of the mold plate (6) is in movable contact with the front of the intermediate plate (5), a mold cavity (7) is provided in the mold plate (6), a socket (8) is provided on the top of the mold plate (6), the socket (8) is connected to the mold cavity (7), a movable plate (9) is slidably installed on the top of the mold plate (6), and a core (10) is provided on one side of the movable plate (9).

2. The outer core-pulling and reverse demoulding structure for an injection mold according to claim 1, characterized in that: Side columns are fixedly installed at the four front corners of the support plate (2), and the side columns are fixedly connected to the fixed plate (3). A guide rod (11) is fixedly installed on one side of the side column, and the intermediate plate (5) and the mold plate (6) are slidably sleeved on the outside of the multiple guide rods (11).

3. The outer core-pulling and reverse demoulding structure for an injection mold according to claim 1, characterized in that: A plurality of connecting plates are fixedly mounted on the rear side of the movable plate (1), and the connecting plates are fixedly connected to the mold plate (6). A mounting plate (12) is fixedly mounted on the front side of the movable plate (1), and a plurality of mounting holes are provided on the front side of the mounting plate (12).

4. The outer core-pulling and reverse demoulding structure for an injection mold according to claim 1, characterized in that: The mold plate (6) and the middle plate (5) are respectively fixedly mounted with an active plate (13) and a driven plate (14) on the left and right sides by bolts. The outer side of the active plate (13) is fixedly sleeved with a rectangular frame (15). The rectangular frame (15) is slidably sleeved on the outer side of the corresponding driven plate (14). The front inner wall of the rectangular frame (15) is in close contact with the front side of the corresponding driven plate (14).

5. The outer core-pulling and reverse demoulding structure for an injection mold according to claim 1, characterized in that: An injection molding tube (16) is fixedly mounted on the support plate (2), the front end of the injection molding tube (16) is fixedly connected to the fixed plate (3), and an injection molding channel is connected between the injection molding tube (16) and the multifunctional assembly block (4).

6. The outer core-pulling and reverse demoulding structure for an injection mold according to claim 5, characterized in that: The outer sliding sleeve of the injection molding tube (16) is provided with a displacement plate (17), and traction plates (18) are fixedly installed on both the left and right sides of the displacement plate (17), and the traction plates (18) are fixedly connected to the middle plate (5) by screws. The bottom of the multifunctional assembly block (4) is provided with two built-in grooves, and an ejection plate (19) is sealed and slidably installed in the built-in grooves. An extension plate (20) is fixedly installed on the top of the ejection plate (19), and one side of the extension plate (20) passes through the multifunctional assembly block (4) and the fixed plate (3) and is fixedly connected to the displacement plate (17).

7. The outer core-pulling and reverse demoulding structure for an injection mold according to claim 1, characterized in that: Two long plates (21) are slidably mounted on the mold plate (6), a short plate is fixedly mounted on one side of the long plate (21), the short plate is fixedly connected to the movable plate (9), a sealing plate is provided on one side of the movable plate (9), the sealing plate is fixedly connected to the core (10), and a plurality of snap-fitting grooves (22) are provided on the top of the mold plate (6), the plurality of snap-fitting grooves (22) are respectively adapted to the short plate and the sealing plate.

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