Television shell injection mold convenient to demold

Abstract

The utility model discloses a television shell injection mold convenient to demold. The television shell injection mold comprises a mold seat, the lower die is arranged at the top of the die base, and a die core is arranged at the top of the lower die; the upper die is arranged above the lower die, and a die cavity is formed in the bottom of the upper die; the mold comprises a mold base, a lower mold and a demolding mechanism, the mold base is arranged in the middle of the mold base, the demolding mechanism is arranged at the bottom of the lower mold, and the demolding mechanism comprises a movable push plate arranged in the middle of the mold base in a lifting mode. A spraying part is integrated on the demolding mechanism and comprises a flow dividing box and a hollow pipe, a liquid spraying opening is formed in the side edge of the hollow pipe, and a demolding agent can be automatically sprayed to the outer side of a mold core while demolding is conducted, so that friction force in the demolding process is reduced, the mold is protected, and the service life of the mold is prolonged; and the demolding efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of television shell production, in particular to an injection mold for a television shell that is convenient for demolding. Background Art

[0002] The television shell is an external protective structure of the television, usually made of plastic or other lightweight materials. Its main functions include protecting the internal components of the television, providing an aesthetic appearance, and certain heat dissipation performance. During the production of the television shell, it needs to be processed through an injection mold. Injection molding is a production method in which molten plastic is injected into the mold cavity and solidified by cooling to obtain plastic products with the required shape and size.

[0003] The existing injection mold for television shells does not have a corresponding demolding agent spraying mechanism. During demolding, it is difficult to demold because the adhesion between the television shell and the mold is too strong. When the shell is forcibly removed from the mold, defects such as scratches, deformation, or cracking may occur on the surface of the shell, affecting the appearance quality and qualification rate of the product. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an injection mold for a television shell that is convenient for demolding, so as to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: An injection mold for a television shell that is convenient for demolding, including:

[0006] A mold base;

[0007] A lower mold, the lower mold is placed on the top of the mold base, and a mold core is provided on the top of the lower mold;

[0008] An upper mold, the upper mold is placed above the lower mold, and a mold cavity is provided on the bottom of the upper mold;

[0009] A demolding mechanism, the demolding mechanism is placed at the bottom of the lower mold, and the demolding mechanism includes a moving push plate that is lifted and lowered in the middle of the mold base, and a thimble is fixedly connected to the top of the moving push plate;

[0010] A spraying part, the spraying part is placed on the top of the moving push plate, and the spraying part includes a shunt box fixedly connected to the top of the moving push plate, a hollow tube is fixedly connected to the top of the shunt box, and a liquid spraying port that slopes downward is provided on the side of the hollow tube. During demolding, the thimble and the hollow tube lift the workpiece, and the liquid spraying port sprays the demolding agent on the outside of the mold core.

[0011] Preferably, a plurality of support columns are fixedly connected inside the mold base, the moving push plate is slidably installed outside the support columns, and a return spring is sleeved outside the support columns and above the moving push plate.

[0012] Preferably, a flow dividing box is fixedly connected to the top of the movable push plate, a touch switch is fixedly connected to the top of the flow dividing box, and the touch switch is electrically connected to the mold release agent feeding device.

[0013] Preferably, a pipeline interface is installed on one side of the flow dividing box, and the hollow pipe is installed on the top of the flow dividing box.

[0014] Preferably, guide posts are fixedly connected to the four corners of the top of the lower mold, and positioning holes are provided at the four corners of the bottom of the upper mold to cooperate with the guide posts.

[0015] Preferably, a cooling water pipe is arranged inside the lower mold, and the cooling water pipe is composed of a straight pipe and an arc pipe spliced together.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: By arranging a demolding mechanism at the bottom of the lower mold, including a movable push plate, a thimble and a hollow pipe, the formed product can be easily ejected from the mold after injection molding. A spraying part is integrated on the demolding mechanism, including a flow dividing box and a hollow pipe. A liquid spraying port is arranged on the side of the hollow pipe, which can automatically spray the mold release agent on the outside of the mold core while demolding, thereby reducing the friction force during the demolding process, protecting the mold, prolonging its service life, and further improving the demolding efficiency. The cooling water pipe arranged inside the lower mold is composed of a straight pipe and an arc pipe spliced together, forming an S-shaped path, so that the cooling water can fully circulate inside the lower mold, thereby realizing efficient cooling of the mold core, shortening the molding time of the product, and improving the production efficiency. Brief Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is a schematic structural diagram of the mold cavity of the present utility model;

[0019] Figure 3 is a schematic structural diagram of the guide post of the present utility model;

[0020] Figure 4 is a schematic structural diagram of the pipeline interface of the present utility model;

[0021] Figure 5 is a schematic structural diagram of the liquid spraying port of the present utility model.

[0022] In the figure: 1, mold base; 2, lower mold; 3, guide post; 4, upper mold; 5, mold core; 6, movable push plate; 7, return spring; 8, support column; 9, thimble; 10, flow dividing box; 11, hollow pipe; 12, touch switch; 13, pipeline interface; 14, liquid spraying port; 15, mold cavity; 16, cooling water pipe. Detailed Embodiment

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figure 1 、 2 As shown in Figures 3, 4, and 5, the present utility model provides a technical solution: an injection mold for a TV shell that is easy to demold, including: a mold base 1; a lower mold 2 is installed on the top of the mold base 1 by bolts, and a mold core 5 is fixedly connected to the top of the lower mold 2; an upper mold 4 is detachably installed above the lower mold 2, and a mold cavity 15 is provided at the bottom of the upper mold 4; a demolding mechanism is placed at the bottom of the lower mold 2, and the demolding mechanism includes a moving push plate 6 that is slidably lifted in the middle of the mold base 1. A thimble 9 is fixedly connected to the top of the moving push plate 6. Both the thimble 9 and the hollow tube 11 are slidably connected to the mold core 5, and the mold core 5 is provided with holes that cooperate with the thimble 9 and the hollow tube 11; a spraying part is placed on the top of the moving push plate 6. The spraying part includes a flow dividing box 10 fixedly connected to the top of the moving push plate 6. The flow dividing box 10 is a box body with multiple internal flow dividing tubes. A hollow tube 11 is fixedly connected to the top of the flow dividing box 10, and an inclined downward liquid spraying port 14 is provided on the side of the hollow tube 11. During demolding, the thimble 9 and the hollow tube 11 lift the workpiece, and the liquid spraying port 14 sprays a demolding agent on the outside of the mold core 5.

[0025] It should be noted that in the present utility model, the upper mold 4 and the lower mold 2 are closed. An injection port is provided at the top of the upper mold 4. Through the injection molding machine and the injection port, after injection molding, a cooling treatment is carried out. When the TV shell is cooled and formed, the upper mold 4 and the lower mold 2 are separated. The moving push plate 6 is driven to slide inside the mold base 1 by a hydraulic cylinder or other pushing mechanisms. The moving push plate 6 drives the thimble 9 and the hollow tube 11 to penetrate out from the top of the mold core 5, so as to lift the TV shell through the thimble 9 and the hollow tube 11, thereby realizing demolding. During this period, the liquid spraying port 14 extends out from the inside of the mold core 5, and a demolding agent is sprayed on the outside of the mold core 5 through the liquid spraying port 14. When the moving push plate 6 returns to its original position, the thimble 9 and the hollow tube 11 retract and reset, and the liquid spraying port 14 is placed inside the mold core 5. After closing the mold, the injection molding work is realized here.

[0026] Please refer to Figure 1 、 3 As shown in the figure, a plurality of support columns 8 are fixedly connected inside the mold base 1. The moving push plate 6 is slidably installed outside the support columns 8, and a return spring 7 is sleeved outside the support columns 8 and above the moving push plate 6.

[0027] It should be noted that after the external force applied to the movable push plate 6 is withdrawn, the return spring 7 pushes the movable push plate 6 along the support column 8 towards one end, and the movable push plate 6 drives the ejector pin 9 and the hollow tube 11 to reset, facilitating the next processing.

[0028] Please refer to Figure 3 、 4 As shown, a flow distribution box 10 is fixedly connected to the top of the movable push plate 6, a touch switch 12 is fixedly connected to the top of the flow distribution box 10, the touch switch 12 is electrically connected to the mold release agent feeding device, a pipeline interface 13 is installed on one side of the flow distribution box 10, and the hollow tube 11 is installed on the top of the flow distribution box 10.

[0029] It should be noted that the mold release agent feeding device of the present utility model includes a mold release agent stock solution storage tank, a proportioned mold release agent storage tank, a pump, and pipelines. The output end of the pump is connected to the pipeline interface 13 through a pipeline. Through the action of the pump, the proportioned mold release agent is transported to the nozzle to achieve continuous supply of the mold release agent. When the movable push plate 6 drives the flow distribution box 10 to move, when the touch switch 12 contacts the lower mold 2, the pump sprays the mold release agent through the liquid spraying port 14 towards the mold core 5.

[0030] Please refer to Figure 1 、 3 As shown, guide columns 3 are fixedly connected to the four corners of the top of the lower mold 2, positioning holes matching the guide columns 3 are provided at the four corners of the bottom of the upper mold 4, and a cooling water pipe 16 is arranged inside the lower mold 2. The cooling water pipe 16 is composed of a straight pipe and an arc-shaped pipe spliced together.

[0031] It should be noted that the guide columns 3 of the present utility model are fixedly connected to the top of the lower mold 2 and are used to cooperate with the positioning holes of the upper mold 4 to ensure the correct positioning and alignment of the mold. Connect the cooling water to the cooling water pipe 16, and the water travels in an S-shaped path inside the lower mold 2 to achieve cooling of the mold core 5 and facilitate rapid forming of the finished product.

[0032] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0033] In addition, the terms "first", "second", "third", and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", "third", and "fourth" may explicitly or implicitly include at least one of such features.

[0034] In the present utility model, unless otherwise clearly stipulated and defined, terms such as "installed", "set", "connected", "fixed", "rotatably connected", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An injection mold for a TV shell that is easy to demold, characterized in that: Comprising: A mold base (1); A lower mold (2), which is placed on the top of the mold base (1), and a mold core (5) is provided on the top of the lower mold (2); An upper mold (4), which is placed above the lower mold (2), and a mold cavity (15) is provided at the bottom of the upper mold (4); A demolding mechanism, which is placed at the bottom of the lower mold (2). The demolding mechanism includes a movable push plate (6) that is liftably arranged in the middle of the mold base (1), and a thimble (9) is fixedly connected to the top of the movable push plate (6); A spraying part, which is placed on the top of the movable push plate (6). The spraying part includes a shunt box (10) fixedly connected to the top of the movable push plate (6), a hollow pipe (11) is fixedly connected to the top of the shunt box (10), and a liquid spraying port (14) that slopes downward is provided on the side of the hollow pipe (11). During demolding, the thimble (9) and the hollow pipe (11) lift up the workpiece, and the liquid spraying port (14) sprays a demolding agent on the outside of the mold core (5).

2. The injection mold for a TV set shell facilitating demolding according to claim 1, wherein: A plurality of support columns (8) are fixedly connected inside the mold base (1), the movable push plate (6) is slidably installed on the outside of the support columns (8), and a return spring (7) is sleeved on the outside of the support columns (8) and above the movable push plate (6).

3. The injection mold for the TV shell facilitating demolding according to claim 1, wherein: A shunt box (10) is fixedly connected to the top of the movable push plate (6), a touch switch (12) is fixedly connected to the top of the shunt box (10), and the touch switch (12) is electrically connected to a demolding agent feeding device.

4. The injection mold for a TV set shell facilitating demolding according to claim 3, wherein: A pipeline interface (13) is installed on one side of the shunt box (10), and the hollow pipe (11) is installed on the top of the shunt box (10).

5. The injection mold for a TV set shell facilitating demolding according to claim 1, characterized in that: Guide columns (3) are fixedly connected to the four corners of the top of the lower mold (2), and positioning holes that cooperate with the guide columns (3) are provided at the four corners of the bottom of the upper mold (4).

6. The injection mold for a TV set shell facilitating demolding according to claim 1, characterized in that: A cooling water pipe (16) is arranged inside the lower mold (2), and the cooling water pipe (16) is composed of a straight pipe and an arc-shaped pipe spliced together.

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