Injection mold easy to demold

Abstract

The utility model relates to the technical field of injection molds, and discloses an injection mold easy to demold, which comprises a movable mold seat, the upper end of the movable mold seat is fixedly connected with a mold frame, the upper end of the mold frame is fixedly connected with a guide column, and the upper end of the movable mold seat is provided with a demolding plate. According to the injection mold easy to demold, a reset spring and a guide column are arranged on the inner side of an inclined core, the inclined core is separated from a core body under the action of the reset spring in the initial state, during injection molding, in the process that a movable mold body approaches a fixed mold body, the inclined column is inserted into an inclined groove, and the inclined column is inserted into the inclined groove along with continuous approaching of the movable mold body and the fixed mold body; the inclined column drives the inclined core to move inwards along the guide column until the movable mold body is in complete contact with the fixed mold body, at the moment, the inclined core is in tight contact with the core body, the structure is ingenious, the auxiliary locking effect is achieved, after a product is formed, the movable mold body is gradually separated from the fixed mold body, the inclined core is separated from the core body, and the inclined column is matched with an ejector pin to eject and demold the product; the demoulding is smooth.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold which is easy to demould. Background Art

[0002] Injection molds are tools used to produce injection molded products and are one of the key components of the injection molding process. Injection molds are used to manufacture various plastic products, including plastic parts, components, accessories, containers, packaging, toys, automotive parts, electronic product housings, etc.

[0003] The Chinese utility model patent announcement number: CN 209079079 U discloses: an injection mold, which is provided with an injection mold front mold and an injection mold rear mold, and the injection mold front mold and the injection mold rear mold cooperate to form a mold molding cavity, and a plastic melt is injected, and a product is formed after cooling and shaping. In the process of injecting the plastic melt, a buffer is provided during the flow of the fluid to change the flow rate of the plastic melt, thereby reducing the phenomenon of the plastic melt producing stamping marks on the product, improving the quality and appearance of the product, and reducing the stamping marks, thereby being able to further improve the qualified rate of the product, but the injection mold is not provided with an auxiliary demolding structure, and the demolding relies on the natural falling of the product, and the demolding efficiency is low, which affects the production efficiency. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide an injection mold that is easy to demould, which can effectively solve the problems in the prior art that the injection mold has no auxiliary demoulding structure, demoulding relies on the natural falling of the product, the demoulding efficiency is low, and the production efficiency is affected.

[0005] The technical scheme adopted by the utility model is: an injection mold that is easy to demould, comprising a movable mold seat, the upper end of the movable mold seat is fixedly connected to the mold frame, the upper end of the mold frame is fixedly connected to the guide column, the upper end of the movable mold seat is provided with a stripping plate, the upper end of the stripping plate is provided with a sliding column, the outer side of the sliding column is sleeved with a limit spring, the upper end of the stripping plate is fixedly connected to an ejector pin, the upper end of the mold frame is provided with a movable mold assembly, and the upper end of the movable mold assembly is provided with a fixed mold assembly;

[0006] The movable mold assembly comprises a movable mold body, a core body, a first cooling pipe, an inclined core, a flat seat, an inclined groove and a second cooling pipe, wherein the upper end of the movable mold body is provided with a core body, the interior of the core body is provided with a first cooling pipe, the upper end of the movable mold body is provided with an inclined core, the outer side of the inclined core is provided with a flat seat, the upper end of the flat seat is provided with an inclined groove, and the interior of the inclined core is provided with a second cooling pipe;

[0007] The fixed mold assembly includes a fixed mold body, a gate, a cavity, an inclined column and a cooling pipe. The upper end of the fixed mold body is provided with a gate, the lower end of the fixed mold body is provided with a cavity, the lower end of the fixed mold body is fixedly connected to the inclined column, and the interior of the fixed mold body is provided with a cooling pipe.

[0008] Preferably, the guide column is slidably connected to the stripper plate, the upper end of the limit spring is fixedly connected to the movable mold assembly, and the lower end of the limit spring is fixedly connected to the stripper plate.

[0009] Through the above technical scheme, a guide column is set. In the initial state, the upper end of the ejector is flush with the core body. The cylinder is fixedly connected between the stripper plate and the movable mold body. After the product is formed, the cylinder is started to drive the stripper plate to move upward along the sliding column, driving the ejector pin to move upward. At this time, the limit spring is compressed, the ejector pin pushes the product out of the mold, the cylinder stroke increases, and the limit spring drives the stripper plate and the movable mold seat to reset.

[0010] Preferably, the inclined core, flat seat, inclined groove and cooling tube 2 are provided in four identical groups and distributed on four sides of the core body, and a return spring and a guide column are provided on the inner side of the inclined core.

[0011] Through the above technical scheme, an inclined core, a flat seat, an inclined groove and a cooling pipe 2 are provided, and a reset spring and a guide column are provided on the inner side of the inclined core. In the initial state, the inclined core is separated from the core body under the action of the reset spring. During injection molding, in the process of the movable mold body approaching the fixed mold body, the inclined column is inserted into the inclined groove. As the movable mold body and the fixed mold body continue to approach, the inclined column drives the inclined core to move inward along the guide column until the movable mold body and the fixed mold body are completely in contact. At this time, the inclined core is in tight contact with the core body, and the structure is relatively ingenious, with an auxiliary locking effect. After the product is formed, the movable mold body and the fixed mold body are gradually separated, and the inclined core is separated from the core body, and cooperates with the ejector to eject the product out of the mold, and the demolding is smooth. The four groups of inclined cores are all provided with independent cooling pipe 2, which cooperates with cooling pipe 3 and cooling pipe 1, and has a good cooling effect.

[0012] Preferably, the guide column is slidably connected to the fixed mold body, and the inclined column is adapted to the inclined groove.

[0013] Through the above technical solution, guide pillars are provided to limit the fixed mold body and the movable mold body, thereby improving the stability of the mold.

[0014] Preferably, the inner wall of the cavity is inclined, and the cavity is adapted to the inclined core.

[0015] Through the above technical solution, the inner wall of the cavity is inclined, the core body and the inclined core form a core and the cavity cooperate to form a mold cavity, and the structure is ingenious.

[0016] Compared with the prior art, the utility model provides an injection mold that is easy to demould, and has the following beneficial effects:

[0017] 1. The injection mold which is easy to demould is provided with an inclined core, a flat seat, an inclined groove and a cooling pipe 2. A reset spring and a guide column are provided on the inner side of the inclined core. In the initial state, the inclined core is separated from the core body under the action of the reset spring. During injection molding, in the process of the movable mold body approaching the fixed mold body, the inclined column is inserted into the inclined groove. As the movable mold body and the fixed mold body continue to approach, the inclined column drives the inclined core to move inward along the guide column until the movable mold body and the fixed mold body are completely in contact. At this time, the inclined core is in close contact with the core body, the structure is relatively ingenious, and it has an auxiliary locking effect. After the product is formed, the movable mold body and the fixed mold body are gradually separated, and the inclined core is separated from the core body, and cooperates with the ejector to eject the product out of the mold, and the demoulding is smooth. The four groups of inclined cores are all provided with an independent cooling pipe 2, which cooperates with the cooling pipe 3 and the cooling pipe 1, and the cooling effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0019] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0020] Figure 3 The three-dimensional structure of the utility model is shown in FIG. Figure 3 ;

[0021] Figure 4 This is a schematic diagram of the split structure of the utility model Figure 1 ;

[0022] Figure 5 This is a schematic diagram of the split structure of the utility model Figure 2 .

[0023] Among them: 1. movable mold base; 2. mold frame; 3. guide column; 4. stripper plate; 5. sliding column; 6. limit spring; 7. ejector pin; 8. movable mold assembly; 801. movable mold body; 802. core body; 803. cooling pipe one; 804. inclined core; 805. flat seat; 806. inclined groove; 807. cooling pipe two; 9. fixed mold assembly; 901. fixed mold body; 902. gate; 903. cavity; 904. inclined column; 905. cooling pipe three. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Embodiment 1: Figure 1-5 As shown, the utility model provides an injection mold which is easy to demold, comprising a movable mold base 1, the upper end of the movable mold base 1 is fixedly connected to a mold frame 2, the upper end of the mold frame 2 is fixedly connected to a guide column 3, the upper end of the movable mold base 1 is provided with a stripping plate 4, the upper end of the stripping plate 4 is provided with a sliding column 5, the outer side of the sliding column 5 is sleeved with a limit spring 6, the upper end of the stripping plate 4 is fixedly connected to an ejector pin 7, the upper end of the mold frame 2 is provided with a movable mold assembly 8, and the upper end of the movable mold assembly 8 is provided with a fixed mold assembly 9.

[0026] Specifically, the guide post 3 is slidably connected to the stripper plate 4, the upper end of the limit spring 6 is fixedly connected to the movable mold assembly 8, and the lower end of the limit spring 6 is fixedly connected to the stripper plate 4. The advantage is that the guide post 3 is provided, the upper end of the ejector pin 7 is flush with the core body 802 in the initial state, the cylinder is fixedly connected between the stripper plate 4 and the movable mold body 801, and after the product is formed, the cylinder is started to drive the stripper plate 4 to move upward along the slide post 5, and the ejector pin 7 to move upward. At this time, the limit spring 6 is compressed, the ejector pin 7 ejects the product out of the mold, the cylinder stroke increases, and the limit spring 6 drives the stripper plate 4 and the movable mold seat 1 to reset.

[0027] Specifically, the movable mold assembly 8 includes a movable mold body 801, a core body 802, a cooling pipe 1 803, an inclined core 804, a flat seat 805, an inclined groove 806 and a cooling pipe 2 807. The upper end of the movable mold body 801 is provided with a core body 802, and the cooling pipe 1 803 is provided inside the core body 802. The upper end of the movable mold body 801 is provided with an inclined core 804, and the outer side of the inclined core 804 is provided with a flat seat 805. The upper end of the flat seat 805 is provided with an inclined groove 806, and the interior of the inclined core 804 is provided with a cooling pipe 2 807. The advantage is that the movable mold assembly 8 is provided to cooperate with the fixed mold assembly 9 for injection molding.

[0028] Specifically, the inclined core 804, the flat seat 805, the inclined groove 806 and the cooling tube 2 807 are provided in four identical groups, distributed on the four sides of the core body 802, and a return spring and a guide column are provided on the inner side of the inclined core 804. The advantage is that the inclined core 804, the flat seat 805, the inclined groove 806 and the cooling tube 2 807 are provided, and the return spring and the guide column are provided on the inner side of the inclined core 804. In the initial state, the inclined core 804 is separated from the core body 802 under the action of the return spring. When performing injection molding, in the process of the movable mold body 801 and the fixed mold body 901 approaching each other, the inclined column 904 is inserted into the inclined groove 806. As the movable mold body 801 and the fixed mold body 901 continue to approach each other, the inclined column 904 drives the inclined core 804 to move inward along the guide column. Move until the movable mold body 801 is completely in contact with the fixed mold body 901. At this time, the inclined core 804 is in close contact with the core body 802. The structure is relatively ingenious and has an auxiliary locking effect. After the product is formed, the movable mold body 801 and the fixed mold body 901 are gradually separated, and the inclined core 804 is separated from the core body 802, and cooperates with the ejector pin 7 to eject the product out of the mold. The demoulding is smooth. The four groups of inclined cores 804 are all provided with independent cooling pipe two 807, which cooperate with cooling pipe three 905 and cooling pipe one 803 to have a good cooling effect.

[0029] Embodiment 2: Figure 2-5 As shown, as an improvement to the previous embodiment.

[0030] Specifically, it includes a fixed mold body 901, a gate 902, a cavity 903, an inclined column 904 and a cooling pipe 3 905. The upper end of the fixed mold body 901 is provided with a gate 902, the lower end of the fixed mold body 901 is provided with a cavity 903, the lower end of the fixed mold body 901 is fixedly connected to the inclined column 904, and the interior of the fixed mold body 901 is provided with a cooling pipe 3 905. The advantage is that the fixed mold body 901 is provided, and the injection molding liquid is injected into the cavity 903 through the gate 902 to perform the injection molding work.

[0031] Specifically, the guide pillar 3 is slidably connected to the fixed mold body 901, and the inclined pillar 904 is adapted to the inclined groove 806. The advantage is that the guide pillar 3 is provided to limit the fixed mold body 901 and the movable mold body 801, thereby improving the stability of the mold.

[0032] Specifically, the inner wall of the cavity 903 is inclined, and the cavity 903 is adapted to the inclined core 804. The advantage is that the inner wall of the cavity 903 is inclined, the core body 802 and the inclined core 804 form a core and the cavity 903 cooperate to form a mold cavity, and the structure is ingenious.

[0033] Working principle: When in use, in the initial state, the upper end of the ejector pin 7 is flush with the core body 802, the cylinder is fixedly connected between the stripper plate 4 and the movable mold body 801, and a return spring and a guide column are arranged on the inner side of the inclined core 804. In the initial state, the inclined core 804 is separated from the core body 802 under the action of the return spring. During injection molding, in the process of the movable mold body 801 and the fixed mold body 901 approaching, the inclined column 904 is inserted into the inclined groove 806. As the movable mold body 801 and the fixed mold body 901 continue to approach, the inclined column 904 drives the inclined core 804 to move inward along the guide column until the movable mold body 801 is completely in contact with the fixed mold body 901. At this time, the inclined core 804 and the core body 802 is in close contact, and the injection plastic is injected into the cavity 903 through the gate 902 to carry out injection molding. The structure is relatively ingenious and has an auxiliary locking effect. The four groups of inclined cores 804 are all provided with independent cooling pipe two 807, which cooperate with cooling pipe three 905 and cooling pipe one 803. After the three groups of cooling pipes are injected with refrigerant, the cooling effect of the product is good. After the product is formed, the movable mold body 801 and the fixed mold body 901 are gradually separated, and the inclined core 804 is separated from the core body 802 to eject the product. The start cylinder drives the stripping plate 4 to move upward along the sliding column 5, and drives the ejector pin 7 to move upward. At this time, the limit spring 6 is compressed, and the ejector pin 7 cooperates with the inclined core 804 to eject the product from the mold, and the demolding is smooth.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection mold that is easy to demould, comprising a movable mold base (1), characterized in that: The upper end of the movable mold base (1) is fixedly connected to the mold frame (2), the upper end of the mold frame (2) is fixedly connected to the guide column (3), the upper end of the movable mold base (1) is provided with a stripper plate (4), the upper end of the stripper plate (4) is provided with a slide column (5), the outer side of the slide column (5) is sleeved with a limit spring (6), the upper end of the stripper plate (4) is fixedly connected to an ejector pin (7), the upper end of the mold frame (2) is provided with a movable mold assembly (8), and the upper end of the movable mold assembly (8) is provided with a fixed mold assembly (9); The movable mold assembly (8) comprises a movable mold body (801), a core body (802), a cooling pipe 1 (803), an inclined core (804), a flat seat (805), an inclined groove (806) and a cooling pipe 2 (807); the upper end of the movable mold body (801) is provided with a core body (802); the interior of the core body (802) is provided with a cooling pipe 1 (803); the upper end of the movable mold body (801) is provided with an inclined core (804); the outer side of the inclined core (804) is provided with a flat seat (805); the upper end of the flat seat (805) is provided with an inclined groove (806); and the interior of the inclined core (804) is provided with a cooling pipe 2 (807); The fixed mold assembly (9) comprises a fixed mold body (901), a gate (902), a cavity (903), an inclined column (904) and a cooling pipe three (905); the gate (902) is provided at the upper end of the fixed mold body (901), the cavity (903) is provided at the lower end of the fixed mold body (901), the lower end of the fixed mold body (901) is fixedly connected to the inclined column (904), and the interior of the fixed mold body (901) is provided with a cooling pipe three (905).

2. The easy-to-demold injection mold according to claim 1, characterized in that: The guide column (3) is slidably connected to the stripper plate (4); the upper end of the limit spring (6) is fixedly connected to the movable mold assembly (8); and the lower end of the limit spring (6) is fixedly connected to the stripper plate (4).

3. The easy-to-demold injection mold according to claim 1, characterized in that: The inclined core (804), the flat seat (805), the inclined groove (806) and the second cooling pipe (807) are arranged in four identical groups and distributed on four sides of the core body (802). A return spring and a guide column are arranged on the inner side of the inclined core (804).

4. The easy-to-demold injection mold according to claim 1, characterized in that: The guide column (3) is slidably connected to the fixed mold body (901), and the inclined column (904) is adapted to the inclined groove (806).

5. The easy-to-demold injection mold according to claim 1, characterized in that: The inner wall of the mold cavity (903) is inclined, and the mold cavity (903) is compatible with the inclined core (804).

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