Injection mold for a grid

Abstract

The utility model relates to injection mold technical field, concretely is a kind of injection mold of grating.The utility model includes movable mould and fixed mould, the inner wall of movable mould is provided with spraying assembly and mould core, the oil inlet groove of spraying assembly is included in movable mould inner wall, the inner wall slidingly connected with slip ring of oil inlet groove, the circular arc surface of slip ring is rotatably connected with rotary head, the circular arc surface of rotary head is provided with spray hole, the upper end of movable mould is fixedly connected with the external connector of external demolding oil source, the inner wall of oil inlet groove is provided with limiting sliding slot, the inner wall slidingly connected with limiting block of limiting sliding slot, by setting spraying assembly, when spraying demolding oil before mould injection, external connector is connected with external demolding oil source pipe, demolding oil is pumped by oil pump, demolding oil enters into oil inlet groove, so that demolding oil impacts rotary head to extend, finally demolding oil is sprayed to mould and mould core by spray hole, and then as far as possible reach the effect of spraying demolding oil, reduce the role of worker's labor intensity.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to an injection mold for a grid. Background Technology

[0002] Injection molds are components that give plastic shape and size during molding. Injection molds consist of a fixed mold and a moving mold. During grid injection molding, the moving mold is pushed by a cylinder to close with the fixed mold. Then, the injection machine squeezes the molten plastic into the closed mold. After cooling, the grid is injection molded. Then, the moving mold is driven by a cylinder to separate from the fixed mold again. Finally, the injection molded grid is removed.

[0003] In their daily work, the inventors discovered that when using injection molds, in order to facilitate the separation of the grid after injection molding from the mold, release oil is usually sprayed on the mold and mold core before injection molding. However, the spraying of release oil is generally done manually, which greatly increases the labor intensity of workers and also indirectly affects the injection molding efficiency. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that in actual use, in order to facilitate the separation of the injection-molded grid from the mold, release oil is usually sprayed on the mold and mold core before injection molding. However, the spraying of release oil is usually done manually, which greatly increases the labor intensity of workers and also indirectly affects the injection molding efficiency. Therefore, this utility model proposes an injection mold for grids.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an injection mold for a grid, comprising a moving mold and a fixed mold, wherein the inner wall of the moving mold is provided with a spraying component and a mold core, the spraying component includes an oil inlet groove formed in the inner wall of the moving mold, a slip ring is slidably connected to the inner wall of the oil inlet groove, a rotating head is rotatably connected to the arc surface of the slip ring, and a spray hole is formed on the arc surface of the rotating head, and an external connector for an external demolding oil source is fixedly connected to the upper end of the moving mold.

[0006] The effect achieved by the above components is as follows: by setting up the spraying assembly, when spraying release oil before mold injection, the external connector is connected to the external release oil source pipe, and the release oil is pumped in by the oil pump. The release oil enters the oil inlet groove, causing the release oil to impact the rotating head to extend. Finally, the release oil is sprayed out from the spray hole onto the mold and mold core, thereby achieving the effect of spraying release oil as much as possible and reducing the labor intensity of workers.

[0007] Preferably, the inner wall of the oil inlet groove is provided with a limiting groove, and a limiting block is slidably connected to the inner wall of the limiting groove, and the slip ring and the limiting block are fixed.

[0008] The aforementioned components achieve the following effects: by limiting the sliding direction of the slip ring through the limiting groove and the limiting block, a sealing ring is provided between the slip ring and the moving mold.

[0009] Preferably, a return spring is fixedly connected to the right end of the slip ring, and the other end of the return spring is fixed to the moving mold.

[0010] The effect achieved by the above components is as follows: the ejector oil impacts the rotating head and extends, the return spring deforms, and after the oil pump stops working, the ejector oil stops entering the rotating head, the return spring resets, and the rotating head retracts into the oil inlet.

[0011] Preferably, an installation rod is fixedly connected to one side of the inner wall of the oil inlet groove, a sleeve is slidably connected to the arc surface of the installation rod, the sleeve is fixed to the rotating head, and a turbine is fixedly connected to the arc surface of the sleeve.

[0012] The effect achieved by the above components is as follows: after the release oil impacts the turbine, the turbine drives the sleeve on the mounting rod to rotate, causing the rotating head to rotate, thereby spraying the release oil in a rotating manner. With the help of centrifugal force, the spraying range of the release oil is increased. A sealing gasket is provided between the rotating head and the slip ring.

[0013] Preferably, a replacement assembly is provided between the mold core and the moving mold. The replacement assembly includes a circular block fixedly connected to the right end of the mold core, and a fixing groove is provided on the inner wall of the moving mold.

[0014] The effect achieved by the above components is that when it is necessary to replace the mold core, the mold core is dragged to separate the circular block from the fixed groove, thereby removing the mold core from the moving mold, and then the new mold core is installed.

[0015] Preferably, a trapezoidal block is slidably inserted into the arc surface of the circular block, and the trapezoidal block is inserted into the moving mold.

[0016] The effect achieved by the above components is as follows: dragging the mold core causes the circular block to be inserted into the fixed groove. When the trapezoidal block comes into contact with the moving mold, it is pushed back into the circular block. The reset mechanism is compressed. After the circular block is fully inserted into the fixed groove, the reset mechanism is reset, and the trapezoidal block is inserted into the moving mold, thereby fixing the mold core and the moving mold.

[0017] Preferably, a second spring is fixedly connected to the lower end of the trapezoidal block, and the other end of the second spring is fixed to the circular block.

[0018] The effect achieved by the above components is as follows: dragging the mold core causes the circular block to be inserted into the fixed groove, and when the trapezoidal block comes into contact with the moving mold, it is pushed back into the circular block, and the second spring is compressed.

[0019] Preferably, a pull rope is fixedly connected to the lower end of the trapezoidal block, and the pull rope passes through the circular block and the mold core.

[0020] The effect achieved by the above components is: pulling the pull rope allows the trapezoidal block to retract completely into the circular block, thereby dragging the mold core to separate the circular block from the moving mold for disassembly.

[0021] In summary, the beneficial effects of this utility model are as follows:

[0022] In this invention, by setting up a spraying component, when spraying release oil before mold injection, the external connector is connected to an external release oil source pipe, and the release oil is pumped in by an oil pump. The release oil enters the oil inlet groove, causing the release oil to impact the rotating head to extend. Finally, the release oil is sprayed out from the spray hole onto the mold and mold core, thereby achieving the effect of spraying release oil as much as possible and reducing the labor intensity of workers. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the spraying component of this utility model;

[0025] Figure 3 This is a three-dimensional structural diagram of the explosion of this utility model;

[0026] Figure 4 This is a three-dimensional structural diagram of the replacement component of this utility model from another angle;

[0027] Figure 5 This is a three-dimensional structural schematic diagram of the cross-section of the spraying component of this utility model;

[0028] Figure 6 This is a three-dimensional structural diagram of the explosion of the spraying component of this utility model.

[0029] Legend: 1. Moving mold; 2. Spraying assembly; 3. Replacement assembly; 4. Fixed mold; 5. Mold core; 21. Oil inlet groove; 22. External connector; 23. Slip ring; 24. Restricting groove; 25. Restricting block; 26. Return spring; 27. Mounting rod; 28. Turbine; 29. ​​Sleeve; 210. Rotating head; 211. Spray nozzle; 31. Fixing groove; 32. Circular block; 33. Trapezoidal block; 34. Second spring; 35. Pull rope. Detailed Implementation

[0030] Reference Figure 1 As shown, this utility model provides a technical solution: an injection mold for a grid includes a moving mold 1 and a fixed mold 4, and the inner wall of the moving mold 1 is provided with a spraying component 2 and a mold core 5.

[0031] Reference Figure 2 and Figure 5 as well as Figure 6As shown in this embodiment: the spraying assembly 2 includes an oil inlet groove 21 formed on the inner wall of the moving mold 1. A slip ring 23 is slidably connected to the inner wall of the oil inlet groove 21. A rotating head 210 is rotatably connected to the arc surface of the slip ring 23. The arc surface of the rotating head 210 has spray holes 211. An external connector 22 for an external release oil source is fixedly connected to the upper end of the moving mold 1. By setting the spraying assembly 2, when spraying release oil before mold injection, the external connector 22 is connected to the external release oil source pipe. Release oil is pumped in by an oil pump and enters the oil inlet 21, causing the release oil to impact the rotating head 210. Finally, the release oil is sprayed out from the spray nozzle 211 onto the mold and mold core 5, thereby maximizing the spraying of release oil and reducing the labor intensity of workers. The inner wall of the oil inlet 21 is provided with a limiting groove 24, and a limiting block 25 is slidably connected to the inner wall of the limiting groove 24. The slip ring 23 is fixed to the limiting block 25. The limiting groove 24 and the limiting block 25 are used to control the movement of the limiting groove 24 and the limiting block 25. The sliding direction of the slip ring 23 is restricted. A sealing ring is provided between the slip ring 23 and the moving mold 1. A return spring 26 is fixedly connected to the right end of the slip ring 23. The other end of the return spring 26 is fixed to the moving mold 1. When the demolding oil impacts the rotating head 210, the return spring 26 deforms. After the oil pump stops working, the demolding oil stops entering the rotating head 210, and the return spring 26 resets, causing the rotating head 210 to retract into the oil inlet groove 21. An installation rod 27 is fixedly connected to one side of the inner wall of the oil inlet groove 21. A sleeve 29 is slidably connected to the arc surface of the installation rod 27. The sleeve 29 is fixed to the rotating head 210. A turbine 28 is fixedly connected to the arc surface of the sleeve 29. After the demolding oil impacts the turbine 28, the turbine 28 drives the sleeve 29 on the installation rod 27 to rotate, causing the rotating head 210 to rotate, thereby spraying the demolding oil in a rotating manner. With the help of centrifugal force, the spray range of the demolding oil is increased. A sealing gasket is provided between the rotating head 210 and the slip ring 23.

[0032] Reference Figure 3 and Figure 4As shown in this embodiment: a replacement component 3 is provided between the mold core 5 and the moving mold 1. The replacement component 3 includes a circular block 32 fixedly connected to the right end of the mold core 5. A fixing groove 31 is provided on the inner wall of the moving mold 1. When the mold core 5 needs to be replaced, the mold core 1 is dragged to separate the circular block 32 from the fixing groove 31, thereby removing the mold core 5 from the moving mold 1. Then, a new mold core 5 is installed. A trapezoidal block 33 is slidably inserted into the arc surface of the circular block 32. The trapezoidal block 33 is inserted into the moving mold 1. The mold core 1 is dragged so that the circular block 32 is inserted into the fixing groove 31. When the trapezoidal block 33 contacts the moving mold 1, it is pushed back into the circular block 32, and the reset mechanism is compressed. After the circular block 32 is fully inserted... After being inserted into the fixed groove 31, the reset mechanism resets, and the trapezoidal block 33 is inserted into the moving mold 1, thereby fixing the mold core 5 and the moving mold 1. The lower end of the trapezoidal block 33 is fixedly connected to the second spring 34, and the other end of the second spring 34 is fixed to the circular block 32. Dragging the mold core 1 causes the circular block 32 to be inserted into the fixed groove 31. When the trapezoidal block 33 comes into contact with the moving mold 1, it is pushed back into the circular block 32, and the second spring 34 is compressed. The lower end of the trapezoidal block 33 is fixedly connected to the pull rope 35, which passes through the circular block 32 and the mold core 5. Pulling the pull rope 35 causes the trapezoidal block 33 to be completely retracted into the circular block 32, thereby dragging the mold core 1 to separate the circular block 32 and the moving mold 1 for disassembly.

[0033] Working principle:

[0034] During the injection molding of the grid, the moving mold 1 is pushed by a cylinder to close with the fixed mold 4. Then, the injection molding machine squeezes the molten plastic into the closed mold. After cooling, the grid is injection molded and the moving mold 1 is again driven by the cylinder to separate from the fixed mold 4. Then, the injection molded grid is taken out. When spraying release oil before mold injection, the external connector 22 is connected to the external release oil source pipe. The release oil is pumped in by the oil pump and enters the oil inlet groove 21, so that the release oil impacts the rotating head 210 to extend. Finally, the release oil is sprayed out from the spray hole 211 onto the mold and mold core 5, thereby achieving the effect of spraying release oil as much as possible and reducing the labor intensity of workers. After the release oil impacts the turbine 28, the turbine 28 drives the sleeve 29 on the mounting rod 27 to rotate, so that the rotating head 210 rotates, thereby rotating and spraying the release oil. With the help of centrifugal force, the spray range of the release oil is increased. A sealing gasket is set between the rotating head 210 and the slip ring 23 to limit the sliding groove. The functions of 24 and the limiting block 25 are to restrict the sliding direction of the slip ring 23. A sealing ring is provided between the slip ring 23 and the moving mold 1. When the demolding oil impacts the rotating head 210, the return spring 26 deforms. After the oil pump stops working, the demolding oil stops entering the rotating head 210, and the return spring 26 resets, causing the rotating head 210 to retract into the oil inlet groove 21. Pulling the pull rope 35 causes the trapezoidal block 33 to retract completely into the circular block 32, thereby dragging the mold core 1, separating the circular block 32 from the moving mold 1 for disassembly, and removing the mold core 5 from the moving mold 1. Then, a new mold core 5 is installed. Dragging the mold core 1 causes the circular block 32 to insert into the fixing groove 31. When the trapezoidal block 33 contacts the moving mold 1, it is pushed back into the circular block 32, and the second spring 34 is compressed. After the circular block 32 is fully inserted into the fixing groove 31, the second spring 34 resets, and the trapezoidal block 33 is inserted into the moving mold 1, thereby fixing the mold core 5 and the moving mold 1.

[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may use the disclosed technical content to make changes or modifications to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the scope of the utility model's technical solution, still fall within the protection scope of this utility model's technical solution. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through specific circumstances.

Claims

1. An injection mold for a grid, comprising a moving mold (1) and a fixed mold (4), characterized in that: The inner wall of the moving mold (1) is provided with a spraying assembly (2) and a mold core (5). The spraying assembly (2) includes an oil inlet groove (21) opened on the inner wall of the moving mold (1). A slip ring (23) is slidably connected to the inner wall of the oil inlet groove (21). A rotating head (210) is rotatably connected to the arc surface of the slip ring (23). A spray hole (211) is opened on the arc surface of the rotating head (210). An external connector (22) for an external demolding oil source is fixedly connected to the upper end of the moving mold (1).

2. The injection mold for a grille according to claim 1, characterized in that: The inner wall of the oil inlet groove (21) is provided with a limiting groove (24), and a limiting block (25) is slidably connected to the inner wall of the limiting groove (24). The slip ring (23) and the limiting block (25) are fixed.

3. The injection mold for a grille according to claim 2, characterized in that: A return spring (26) is fixedly connected to the right end of the slip ring (23), and the other end of the return spring (26) is fixed to the moving mold (1).

4. The injection mold for a grille according to claim 3, characterized in that: An installation rod (27) is fixedly connected to one side of the inner wall of the oil inlet groove (21). A sleeve (29) is slidably connected to the arc surface of the installation rod (27). The sleeve (29) is fixed to the rotating head (210). A turbine (28) is fixedly connected to the arc surface of the sleeve (29).

5. The injection mold for a grille according to claim 4, characterized in that: A replacement component (3) is provided between the mold core (5) and the moving mold (1). The replacement component (3) includes a circular block (32) fixedly connected to the right end of the mold core (5). A fixing groove (31) is provided on the inner wall of the moving mold (1).

6. The injection mold for a grille according to claim 5, characterized in that: A trapezoidal block (33) is slidably inserted into the arc surface of the circular block (32), and the trapezoidal block (33) is inserted into the moving mold (1).

7. The injection mold for a grille according to claim 6, characterized in that: The lower end of the trapezoidal block (33) is fixedly connected to a second spring (34), and the other end of the second spring (34) is fixed to the circular block (32).

8. The injection mold for a grille according to claim 7, characterized in that: The lower end of the trapezoidal block (33) is fixedly connected to a pull rope (35), which passes through the circular block (32) and the mold core (5).

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