Anti-blocking injection mold

Abstract

The utility model relates to the technical field of injection molds, in particular to an anti-blocking injection mold which comprises a lower mold and an upper mold, a feeding pipe is arranged on the upper mold, a first groove is formed in one side of the feeding pipe, a second groove is formed in one side, close to the upper mold, of the first groove, a rotating assembly is arranged in the second groove, and the rotating assembly is connected with the lower mold through a connecting rod. A rotary knob is arranged on the rotating assembly, a first annular filter plate is fixedly arranged in the first groove, a baffle is fixedly arranged on one side of the first annular filter plate, and a second annular filter plate is arranged on the first annular filter plate in a sleeving manner, so that the device can adapt to the flowability of different plastics, blockage is prevented, and the continuous production time is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and more specifically, to an anti-clogging injection mold. Background Technology

[0002] Injection molds are precision tools used to manufacture plastic products. Their main function is to inject molten plastic into the mold cavity under high temperature and pressure, and obtain a product of a specific shape after cooling. These molds are usually precision-machined from steel, with high precision and surface quality requirements, and a long service life. They are widely used in the manufacture of various plastic products, such as internal plastic parts for electronic devices (such as mobile phones, televisions, computers, etc.), as well as daily necessities and automotive parts.

[0003] For example, Chinese Patent Publication No. CN201711342759.8 discloses an injection mold comprising a fixed mold frame, a fixed mold, and a moving mold. The fixed mold has two sets of sliding components that slide in opposite directions. Each sliding component includes an injection mold slidably connected to the side wall of the fixed mold facing the moving mold, a connecting block connected to the side wall of the injection mold facing away from the other sliding component, and a perforated rod disposed on the side wall of the connecting block facing the side wall of the injection mold. The side wall of the injection mold facing the connecting block has a through hole for the perforated rod to pass through. Two sets of driving components are provided between the moving mold and each of the two sliding components to drive the corresponding sliding components to move in opposite directions. The fixed mold frame has an ejection component that drives the injection molded part to detach from the fixed mold. The ejection component and the moving mold are disposed on opposite sides of the fixed mold. This injection mold of the present invention can drive the injection mold and the perforated rod to detach from the injection mold when the moving mold detaches from the fixed mold, thereby facilitating the removal of the injection molded part.

[0004] However, in the above-mentioned technical solutions, impurities and large particles in the molten plastic can easily clog the mold flow channels during the injection molding process. Traditional anti-clogging injection molds mostly adopt fixed filter structures, which cannot adapt to the flow requirements of materials with different viscosities. High-viscosity materials require larger pore sizes to ensure flow, while low-viscosity materials require smaller pore sizes to improve filtration accuracy. When changing materials, the machine needs to be stopped to replace the filter screen, which affects production efficiency. Secondly, when a certain pore on the filter screen becomes clogged, the entire filtration system may fail, requiring the machine to be stopped for cleaning or replacement of the filter screen. This not only reduces production efficiency but also increases maintenance costs and time costs. Utility Model Content

[0005] The main objective of this invention is to provide an anti-clogging injection mold that effectively solves the problem in the prior art where impurities and large particles in the molten plastic easily clog the mold flow channel during injection molding. Traditional anti-clogging injection molds often use a fixed filter structure, which cannot adapt to the flow requirements of materials with different viscosities. High-viscosity materials require larger pore sizes to ensure flow, while low-viscosity materials require smaller pore sizes to improve filtration accuracy. Furthermore, changing materials requires stopping the machine to replace the filter screen, affecting production efficiency. Moreover, when a pore on the filter screen becomes clogged, the entire filtration system may fail, requiring machine shutdown for cleaning or replacement of the filter screen. This not only reduces production efficiency but also increases maintenance and time costs.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an anti-clogging injection mold, including a lower mold and an upper mold, wherein a feed pipe is provided on the upper mold, a first groove is provided on one side of the feed pipe, a second groove is provided on the side of the first groove near the upper mold, a rotating component is provided in the second groove, a knob is provided on the rotating component, a first annular filter plate is fixedly provided in the first groove, a baffle is fixedly provided on one side of the first annular filter plate, and a second annular filter plate is sleeved on the first annular filter plate.

[0007] Preferably, the diameter of the first groove is larger than the inner diameter of the feed tube.

[0008] Preferably, the rotating assembly has a rotating ring rotatably disposed in the second groove, a worm wheel is disposed on the rotating ring, a worm is meshed on one side of the worm wheel, and a rotating column is disposed on the worm.

[0009] Preferably, the rotating ring is fixedly connected to the second annular filter plate.

[0010] Preferably, one side of the rotating column rotates through the feed pipe.

[0011] Preferably, the rotating column is fixedly connected to the knob on one side of the feed pipe.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) In this utility model, the material is injected into the first groove. Since the inlet of the first annular filter plate is blocked by the baffle, the material in the first groove can only pass through the filter holes on the second annular filter plate and the first annular filter plate in sequence to enter the inner cavity of the feed pipe. Thus, the impurities and large plastic residues in the material are filtered by the second annular filter plate and the first annular filter plate to prevent impurities and large plastic residues from entering the flow channel and prevent blockage.

[0014] (2) When the second annular filter plate needs to be rotated according to the flowability of different materials, the rotating column is rotated by the knob. The rotating column drives the worm to rotate, the worm drives the worm wheel to rotate, the worm wheel drives the rotating ring to rotate, and the rotating ring drives the second annular filter plate to rotate. This makes the filter holes on the second annular filter plate and the first annular filter plate completely aligned (maximum flow) or partially staggered (reduced pore size), which can adapt to the flowability of different plastics (such as increasing the pore size for high viscosity materials and decreasing the pore size for low viscosity materials). When changing materials, there is no need to replace the filter screen. The misalignment amount can be directly adjusted to match the cleanliness requirements of the new material. At the same time, when a certain pore size begins to be blocked, it can be slightly misaligned to switch to the new pore area, extending the continuous production time. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an anti-clogging injection mold according to the present invention;

[0016] Figure 2 This is a schematic diagram of the internal structure of an anti-clogging injection mold according to the present invention;

[0017] Figure 3 This utility model relates to an anti-clogging injection mold. Figure 2 A magnified structural diagram at point A;

[0018] Figure 4 This is a schematic diagram of the rotating component in an anti-clogging injection mold according to the present invention.

[0019] In the diagram: 1. Lower mold; 2. Upper mold; 3. Feed pipe; 4. First groove; 5. Second groove; 6. Rotating assembly; 601. Rotating ring; 602. Worm gear; 603. Worm; 604. Rotating column; 7. Knob; 8. Second annular filter plate; 9. First annular filter plate; 10. Baffle. Detailed Implementation

[0020] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0021] like Figures 1 to 3As shown, an anti-clogging injection mold includes a lower mold 1 and an upper mold 2. The upper mold 2 is provided with a feed pipe 3. A first groove 4 is provided on one side of the feed pipe 3. A second groove 5 is provided on the side of the first groove 4 near the upper mold 2. A rotating component 6 is provided in the second groove 5. A knob 7 is provided on the rotating component 6. A first annular filter plate 9 is fixedly provided in the first groove 4. A baffle 10 is fixedly provided on one side of the first annular filter plate 9. A second annular filter plate 8 is sleeved on the first annular filter plate 9.

[0022] like Figure 4 As shown, in another embodiment of the present invention, the rotating assembly 6 is rotatably provided with a rotating ring 601 in the second groove 5, a worm wheel 602 is provided on the rotating ring 601, a worm 603 is meshed on one side of the worm wheel 602, and a rotating column 604 is provided on the worm 603.

[0023] When it is necessary to rotate the second annular filter plate 8, the rotating column 604 is rotated by the knob 7. The rotating column 604 drives the worm gear 603 to rotate, the worm gear 603 drives the worm wheel 602 to rotate, the worm wheel 602 drives the rotating ring 601 to rotate, and the rotating ring 601 drives the second annular filter plate 8 to rotate.

[0024] The working principle of this anti-clogging injection mold:

[0025] In use, the material is injected into the first groove 4. Since the inlet of the first annular filter plate 9 is closed by the baffle 10, the material in the first groove 4 can only pass through the filter holes on the second annular filter plate 8 and the first annular filter plate 9 in sequence before entering the inner cavity of the feed pipe 3. Thus, the impurities and large plastic particles in the material are filtered by the second annular filter plate 8 and the first annular filter plate 9, preventing impurities and large plastic particles from entering the flow channel and preventing blockage. When it is necessary to rotate the second annular filter plate 8 according to the flowability of different materials, the rotating column 604 is rotated by the knob 7. The rotating column 604 drives the worm gear. When rod 603 rotates, worm gear 603 drives worm wheel 602 to rotate, worm wheel 602 drives rotating ring 601 to rotate, and rotating ring 601 drives second annular filter plate 8 to rotate. This causes the filter holes on the second annular filter plate 8 and the first annular filter plate 9 to be completely aligned (maximum flow) or partially offset (reduced pore size), adapting to the flowability of different plastics (e.g., larger pore size for high viscosity materials, smaller pore size for low viscosity materials). This allows for material changes without replacing the filter screen; the offset amount can be directly adjusted to match the cleanliness requirements of the new material. At the same time, when a certain pore size begins to clog, a slight offset can be made to switch to a new pore area, extending continuous production time.

[0026] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. Anti-jamming injection mold comprising a lower mold (1) and an upper mold (2), characterized in that: The upper die (2) is provided with a feeding pipe (3), one side of the feeding pipe (3) is provided with a first groove (4), the first groove (4) is provided with a second groove (5) close to one side of the upper die (2), the second groove (5) is provided with a rotating assembly (6), the rotating assembly (6) is provided with a knob (7), the first groove (4) is fixedly provided with a first annular filter plate (9), one side of the first annular filter plate (9) is fixedly provided with a baffle (10), the first annular filter plate (9) is sleeved with a second annular filter plate (8).

2. A non-blocking injection mold according to claim 1, characterized in that: The diameter of the first groove (4) is greater than the inner cavity diameter of the feeding pipe (3).

3. A non-blocking injection mold according to claim 2, characterized in that: The rotating assembly (6) is rotatably provided with a rotating ring (601) in the second groove (5), the rotating ring (601) is provided with a worm wheel (602), one side of the worm wheel (602) is engaged with a worm shaft (603), and the worm shaft (603) is provided with a rotating column (604).

4. A non-blocking injection mold in accordance with claim 3, wherein: The rotating ring (601) is fixedly connected with the second annular filter plate (8).

5. A non-blocking injection mold in accordance with claim 4, wherein: One side of the rotating column (604) is rotatably penetrated through the feeding pipe (3).

6. A non-blocking injection mold in accordance with claim 5, wherein: One side of the rotating column (604) rotatably penetrated through the feeding pipe (3) is fixedly connected with the knob (7).

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