Plastic mold with demolding residue prevention function

Abstract

The utility model discloses a plastic mold with a demolding residue prevention function, belongs to the technical field of plastic molds, and aims to solve the problems that small blocks or traces of residual plastic materials possibly adhere to the interior of a lower mold, the interior of the lower mold is difficult to deeply clean, and the cleaning efficiency is low. Comprising a lower mold, an upper mold, an injection molding pipe, a mounting mechanism and an ejection mechanism, the upper mold is arranged above the lower mold, the injection molding pipe is fixedly connected to the interior of the upper mold, the mounting mechanism is arranged in the lower mold, the ejection mechanism is arranged below the mounting mechanism, an injection molding groove is formed in the lower mold, and the ejection mechanism is arranged below the injection molding groove. The movable box is arranged in the injection molding groove; through the arrangement of the mounting mechanism and the ejection mechanism, after a product is formed, the connection of the positioning block to the connecting block is released, and then the movable box above and the product inside are ejected and taken away together through the ejection column at the bottom, so that the taking-out efficiency and the use convenience of the product are improved.

Description

Technical Field

[0001] This utility model belongs to the field of plastic mold technology, specifically relating to a plastic mold with demolding and residue prevention function. Background Technology

[0002] A plastic mold is a general term for a combination mold used in compression molding, extrusion molding, injection molding, blow molding, and low-foaming molding. The coordinated changes of the mold's punch, die, and auxiliary molding system allow for the production of a series of plastic parts of different shapes and sizes. A mold is a tool for producing plastic products. It consists of several parts, including a molding cavity. During injection molding, the mold is clamped on the injection molding machine, molten plastic is injected into the molding cavity, cools and solidifies within the cavity, then the upper and lower molds separate, and the product is ejected from the mold cavity via the ejection system. Finally, the mold closes again for the next injection molding cycle; the entire injection molding process is cyclical.

[0003] The prior art, patent publication number CN221717673U, describes an injection mold for rubber products. This patent utilizes a drive cylinder, push plate, second working groove, and fixing block in a coordinated manner. This allows the injection mold base plate to easily push and eject the molded rubber product during use. The drive cylinder pushes the push plate upwards, applying force to the rubber product. The fixing block then slides within the second working groove, enhancing the push plate's stability and facilitating ejection. This prevents the rubber product in the first working groove from being difficult to demold after molding. However, in practical use, the following shortcomings remain: After removing the molded product, small pieces or traces of residual plastic material may adhere to the interior of the lower mold. This usually requires cleaning by workers to ensure the quality of subsequent mold manufacturing. The lower mold is typically fixed, making deep cleaning of its interior difficult, resulting in low cleaning efficiency and reduced work efficiency and effectiveness.

[0004] Therefore, a plastic mold with demolding and residue prevention function is needed to solve the problem in the existing technology that small pieces or traces of residual plastic material may adhere to the inside of the lower mold, making it difficult to deeply clean the inside of the lower mold and resulting in low cleaning efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a plastic mold with demolding and residue prevention functions to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a plastic mold with demolding and residue prevention function, comprising a lower mold, an upper mold, an injection tube, an installation mechanism, and an ejection mechanism. The upper mold is disposed above the lower mold, the injection tube is fixedly connected to the interior of the upper mold, the installation mechanism is disposed inside the lower mold, and the ejection mechanism is disposed below the installation mechanism.

[0007] The installation mechanism consists of a movable box, a connecting block, a threaded rod, and a positioning block. The lower mold has an injection groove inside, the movable box is located inside the injection groove, the connecting block is symmetrically fixed to the left and right sides of the movable box, and the upper left and right sides of the injection groove have symmetrical connecting grooves that are compatible with the connecting blocks.

[0008] It should be noted in the solution that the threaded rod is threadedly connected between the connecting groove and the outer wall of the lower mold, and a turntable is fixedly connected to the end of the threaded rod away from the injection groove, and the positioning block is rotatably connected to the other end of the threaded rod.

[0009] It is worth noting that the active box is made of stainless steel.

[0010] Furthermore, it should be noted that a groove adapted to the positioning block is provided on one side of the connecting groove, and a positioning groove adapted to the positioning block is provided on one side of the connecting block.

[0011] In a preferred embodiment, the ejection mechanism comprises a structural cavity, a bidirectional lead screw, a motor, a threaded block, a connecting rod, a connecting plate, a slider, and an ejection column. The structural cavity is provided below the injection groove. The bidirectional lead screw is rotatably connected to the lower part of the structural cavity. The motor is fixedly connected to the lower right side of the lower mold, and the output end of the motor is fixedly connected to the right end of the bidirectional lead screw. The threaded block is symmetrically threaded to the outside of the threaded surface of the bidirectional lead screw. The lower end of the connecting rod is rotatably connected to the upper part of the threaded block.

[0012] In a preferred embodiment, the connecting plate is rotatably connected above the two connecting rods, the slider is symmetrically fixedly connected to the left and right sides of the connecting plate, and the inner wall of the structural cavity is provided with a groove that matches the slider.

[0013] In a preferred embodiment, the ejector columns are symmetrically fixedly connected to the upper periphery of the connecting plate, and through holes adapted to the ejector columns are symmetrically opened between the injection molding groove and the structural cavity.

[0014] Compared with the prior art, the plastic mold with demolding and residue prevention function provided by this utility model has at least the following beneficial effects:

[0015] With the installation and ejection mechanisms in place, after the product is formed, the connection between the positioning block and the connecting block is released, and then the ejection column at the bottom ejects the upper movable box and the product inside together, improving the product removal efficiency and ease of use. This makes it convenient for workers to remove the movable box from the outside of the product and also makes it easy to clean the disassembled movable box, ensuring the quality of subsequent mold-made products and improving cleaning effect and efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the internal disassembled structure of the lower mold of this utility model.

[0019] In the diagram: 1. Lower mold; 2. Upper mold; 3. Injection tube; 4. Mounting mechanism; 5. Ejection mechanism; 401. Movable box; 402. Connecting block; 403. Positioning groove; 404. Connecting groove; 405. Threaded rod; 406. Positioning block; 501. Structural cavity; 502. Two-way lead screw; 503. Motor; 504. Threaded block; 505. Connecting rod; 506. Connecting plate; 507. Slider; 508. Ejection column; 509. Through hole. Detailed Implementation

[0020] The present invention will be further described below with reference to the embodiments.

[0021] Please see Figure 1-3 This utility model provides a plastic mold with demolding and residue prevention function, including a lower mold 1, an upper mold 2, an injection tube 3, an installation mechanism 4 and an ejection mechanism 5. The upper mold 2 is located above the lower mold 1, the injection tube 3 is fixedly connected to the inside of the upper mold 2, the installation mechanism 4 is located inside the lower mold 1, and the ejection mechanism 5 is located below the installation mechanism 4.

[0022] The mounting mechanism 4 consists of a movable box 401, a connecting block 402, a threaded rod 405, and a positioning block 406. The lower mold 1 has an injection groove inside, the movable box 401 is located inside the injection groove, the connecting block 402 is symmetrically fixedly connected to the left and right sides of the movable box 401, and the upper left and right sides of the injection groove have symmetrical connecting grooves 404 that are compatible with the connecting block 402.

[0023] Further as Figure 1 , Figure 2 and Figure 3As shown, it is worth noting that the threaded rod 405 is threadedly connected between the connecting groove 404 and the outer wall of the lower mold 1. A turntable is fixedly connected to one end of the threaded rod 405 away from the injection groove, and the positioning block 406 is rotatably connected to the other end of the threaded rod 405.

[0024] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth noting that the material of the activity box 401 is stainless steel.

[0025] Stainless steel has high hardness and strength, which allows the 401 movable box to maintain a stable shape under injection pressure and is not easily deformed. Its high surface finish reduces friction with the injection molded product, making the demolding process smoother. It is also easy to clean and maintain, reducing demolding difficulties.

[0026] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth noting that a groove adapted to the positioning block 406 is provided on one side of the connecting groove 404, and a positioning groove 403 adapted to the positioning block 406 is provided on one side of the connecting block 402.

[0027] Whether the positioning block 406 is inserted into the positioning slot 403 or not, the connection block 402 and the lower mold 1 can be assembled and disassembled. The structure is simple and easy to use.

[0028] As can be seen from the above working process, the installation mechanism 4 facilitates the quick removal of the movable box 401 from the outside of the product by the staff, and also facilitates the cleaning of the disassembled movable box 401, so as to ensure the quality of the products manufactured by the mold and improve the cleaning effect and cleaning efficiency.

[0029] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth noting that the ejection mechanism 5 consists of a structural cavity 501, a bidirectional lead screw 502, a motor 503, a threaded block 504, a connecting rod 505, a connecting plate 506, a slider 507, and an ejection column 508. The structural cavity 501 is provided below the injection molding groove. The bidirectional lead screw 502 is rotatably connected to the lower part of the structural cavity 501. The motor 503 is fixedly connected to the lower right side of the lower mold 1, and the output end of the motor 503 is fixedly connected to the right end of the bidirectional lead screw 502. The threaded block 504 is symmetrically threaded to the outside of the threaded surface of the bidirectional lead screw 502. The lower end of the connecting rod 505 is rotatably connected to the upper part of the threaded block 504.

[0030] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth noting that the connecting plate 506 is rotatably connected above the two connecting rods 505, the slider 507 is symmetrically fixedly connected to the left and right sides of the connecting plate 506, and the inner wall of the structural cavity 501 is provided with a sliding groove that matches the slider 507.

[0031] By sliding the slider 507 inside the groove, the stability of the connecting plate 506 moving up and down can be improved, thereby ensuring that the ejector column 508 moves up and down stably and ejects the upper movable box 401 stably, thus improving the overall stability of the mechanism.

[0032] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth noting that the ejector post 508 is symmetrically fixedly connected to the upper periphery of the connecting plate 506, and through holes 509 adapted to the ejector post 508 are symmetrically opened between the injection molding groove and the structural cavity 501.

[0033] By using the ejector post 508 to push out the movable box 401 above through the through hole 509, the stability and smoothness of the movement of the movable box 401 can be improved.

[0034] This solution has the following working process: In use, after the injection-molded product inside the movable box 401 is formed, the upper mold 2 is first opened, the turntable is rotated, and the positioning block 406 is moved by the threaded rod 405, so that it is disengaged from the inside of the positioning groove 403. This disconnects the positioning block 406 from the connecting block 402. Then, the motor 503 is controlled to drive the bidirectional lead screw 502 to rotate, which drives the two threaded blocks 504 to move in opposite directions. The connecting rod 505 drives the connecting plate 506 to move upward, thereby driving the ejector column 508 to move upward, ejecting the movable box 401 above. This makes it easy for the staff to remove the movable box 401 and the product inside at the same time. Furthermore, the stainless steel movable box 401 facilitates detachment from the outside of the product, prevents injection molding material residue, and makes it easy to clean the movable box 401, ensuring the quality of the products manufactured by the mold in the future.

[0035] In summary: Through the installation mechanism 4 and the ejection mechanism 5, after the product is formed, the connection between the positioning block 406 and the connecting block 402 is released, and then the ejection column 508 at the bottom ejects the upper movable box 401 and the product inside together, improving the product removal efficiency and ease of use; it is convenient for workers to remove the movable box 401 from the outside of the product, and it is also convenient to clean the disassembled movable box 401, so as to ensure the quality of subsequent mold-made products and improve the cleaning effect and cleaning efficiency.

Claims

1. A plastic mold with demolding and residue prevention function, comprising a lower mold (1), an upper mold (2), an injection tube (3), an installation mechanism (4), and an ejection mechanism (5), characterized in that: The upper mold (2) is located above the lower mold (1), the injection tube (3) is fixedly connected to the inside of the upper mold (2), the mounting mechanism (4) is located inside the lower mold (1), and the ejection mechanism (5) is located below the mounting mechanism (4). The installation mechanism (4) consists of a movable box (401), a connecting block (402), a threaded rod (405), and a positioning block (406). The lower mold (1) has an injection groove inside. The movable box (401) is located inside the injection groove. The connecting block (402) is symmetrically fixed to the left and right sides of the movable box (401). The upper left and right sides of the injection groove are symmetrically provided with connecting grooves (404) that are compatible with the connecting block (402).

2. A plastic mold with demolding and residue prevention function according to claim 1, characterized in that: The threaded rod (405) is threaded between the connecting groove (404) and the outer wall of the lower mold (1). A turntable is fixedly connected to one end of the threaded rod (405) away from the injection groove, and the positioning block (406) is rotatably connected to the other end of the threaded rod (405).

3. A plastic mold with demolding and residue prevention function according to claim 2, characterized in that: The active box (401) is made of stainless steel.

4. A plastic mold with demolding and residue prevention function according to claim 3, characterized in that: The connecting groove (404) has a groove on one side that is adapted to the positioning block (406), and the connecting block (402) has a positioning groove (403) on one side that is adapted to the positioning block (406).

5. A plastic mold with demolding and residue prevention function according to claim 4, characterized in that: The ejection mechanism (5) consists of a structural cavity (501), a bidirectional lead screw (502), a motor (503), a threaded block (504), a connecting rod (505), a connecting plate (506), a slider (507), and an ejection column (508). The structural cavity (501) is provided below the injection groove. The bidirectional lead screw (502) is rotatably connected to the lower part of the structural cavity (501). The motor (503) is fixedly connected to the lower right side of the lower mold (1), and the output end of the motor (503) is fixedly connected to the right end of the bidirectional lead screw (502). The threaded block (504) is symmetrically threaded to the outside of the threaded surface of the bidirectional lead screw (502). The lower end of the connecting rod (505) is rotatably connected to the upper part of the threaded block (504).

6. A plastic mold with demolding and residue prevention function according to claim 5, characterized in that: The connecting plate (506) is rotatably connected above the two connecting rods (505), and the slider (507) is symmetrically fixedly connected to the left and right sides of the connecting plate (506). The inner wall of the structural cavity (501) is provided with a groove that matches the slider (507).

7. A plastic mold with demolding and residue prevention function according to claim 6, characterized in that: The ejector pins (508) are symmetrically fixedly connected to the upper periphery of the connecting plate (506), and through holes (509) adapted to the ejector pins (508) are symmetrically opened between the injection groove and the structural cavity (501).

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