Injection mold

Abstract

The utility model provides an injection mold, which relates to the technical field of injection molds, and comprises an upper mold and a lower mold, the upper mold is positioned on the right side of the lower mold, one sides of the upper mold and the lower mold, which are far away from each other, are fixedly connected with a mold frame, and guide mechanisms are arranged in the upper mold and the lower mold. The two ends of the guide mechanism are fixedly connected with the mold frame; a sprue is formed in the right side of the upper mold, the left side of the sprue penetrates through the mold frame and extends into the upper mold, a demolding mechanism is arranged on the left side of the lower mold, and the right side of the demolding mechanism penetrates through the lower mold and extends into an inner cavity of the lower mold; and cooling channels for cooling plastics are formed in the upper mold and the lower mold. Through the arrangement of the upper mold, the lower mold, the mold frame, the guide mechanism, the pouring gate, the demolding mechanism, the cooling channel and the locking structure, the problem that the upper mold and the lower mold of an existing injection mold are easy to separate in the hoisting process, so that the mold is damaged or dangers occur is solved.

Description

Technical Field

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

[0002] Injection molds are molds used in the injection molding process, primarily for manufacturing plastic products with complex shapes. The working principle of injection molds is based on the thermoplastic or thermosetting properties of plastics. During injection molding, the moving and fixed molds of the mold are tightly closed, forming a closed cavity whose shape and size are completely consistent with the plastic product to be produced. The plastic raw material (usually in granular form) is heated and melted, then injected into the mold cavity through the injection unit of the injection molding machine. After the melt cools and solidifies within the cavity, the moving and fixed molds separate, and the molded plastic product can be removed.

[0003] In existing technologies, plastic injection molding requires the use of injection molds, which need to be installed on extruders. Existing injection molds require hoisting during installation or disassembly. During hoisting, if there is no locking device to secure the upper and lower molds, gravity, inertia, or unstable operation may cause the upper and lower molds to separate. This may not only damage the mold but also cause safety accidents. Some precision molds contain complex cooling systems, ejection mechanisms, etc. If the upper and lower molds separate during hoisting, these internal components may collide or misalign, causing damage. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an injection mold that can facilitate the fixing of the upper mold and the lower mold, so as to solve the problem that the upper mold and the lower mold are easy to separate during the hoisting process of existing injection molds, which leads to mold damage or danger.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: an injection mold, including an upper mold and a lower mold, wherein the upper mold is located to the right of the lower mold, and a mold frame is fixedly connected to the side of the upper mold and the lower mold that is far apart from each other. A guide mechanism is provided inside the upper mold and the lower mold, and both ends of the guide mechanism are fixedly connected to the mold frame.

[0006] The upper mold has a gate on the right side, and the left side of the gate passes through the mold frame and extends into the interior of the upper mold. The lower mold has a demolding mechanism on the left side, and the right side of the demolding mechanism passes through the lower mold and extends into the inner cavity of the lower mold. Both the upper mold and the lower mold have cooling channels for cooling the plastic inside.

[0007] The top of the lower mold is movably connected to a locking structure, and the right side of the locking structure is used in conjunction with the top of the upper mold.

[0008] Furthermore, the locking structure includes a first screw, the threaded end of which penetrates into the interior of the lower mold and is threadedly connected to the lower mold. A retaining plate is fitted onto the surface of the first screw. A second screw is provided on the right side inside the retaining plate, the threaded end of which penetrates into the interior of the upper mold. A groove for screwing the second screw into the retaining plate is provided on the surface of the retaining plate. A rotation limiting structure is provided inside the retaining plate. The bottom of the rotation limiting structure penetrates into the interior of the lower mold, and the right side of the rotation limiting structure penetrates the retaining plate and engages with the surface of the second screw.

[0009] Furthermore, the rotation limiting structure includes a rotating shaft located inside the clamping plate. A gear is fixedly connected to the surface of the rotating shaft, and a toothed plate meshes with the front side of the gear surface. The right side of the toothed plate penetrates the clamping plate and extends to the surface of the second screw. A handle is fixedly connected to the top of the rotating shaft through the clamping plate.

[0010] Furthermore, a return spring is fixedly connected to the left side of the toothed plate, and the left side of the return spring is fixedly connected to the left side of the inner wall of the card plate.

[0011] Furthermore, the bottom of the rotating shaft surface is threaded, and a positioning pin is threadedly connected to the bottom of the rotating shaft surface. The bottom of the positioning pin penetrates the clamping plate and extends into the interior of the lower mold.

[0012] Furthermore, a hexagonal block is fixedly connected to the surface of the positioning post, a cavity for the hexagonal block to move up and down is provided inside the card plate, and a slot for the positioning post to be inserted is provided on the top of the lower mold.

[0013] The beneficial effects of this utility model are:

[0014] 1. This utility model incorporates an upper mold, a lower mold, a mold frame, a guiding mechanism, a gate, a demolding mechanism, a cooling channel, and a locking structure. The upper and lower molds cooperate with each other and are securely connected by the mold frame. The guiding mechanism ensures precise positioning of both during mold closing, improving the mold's accuracy and stability. The gate design allows plastic raw materials to be smoothly injected into the mold cavity to form the desired product shape. The demolding mechanism facilitates demolding after product molding, reducing manual operation difficulty and improving work efficiency. The cooling channel effectively lowers the mold temperature, accelerates the cooling and solidification of the plastic, and ensures product quality and production efficiency. The locking structure facilitates locking between the upper and lower molds, making it convenient for hoisting the upper and lower molds and preventing separation during hoisting.

[0015] 2. This utility model, by setting a locking structure, can effectively enhance the connection stability between the upper and lower molds. The first screw penetrates the lower mold and is threadedly connected to the lower mold, ensuring the secure installation of the locking structure on the lower mold. The design of the clamping plate and the screwing in of the second screw not only further strengthen the locking structure, but also allow the upper mold to be tightly engaged with the clamping plate through the second screw. The setting of the rotation limiting structure not only restricts the rotation of the clamping plate, but also prevents the clamping plate from rotating during the process of the upper and lower molds being subjected to force, thus preventing the clamping plate from detaching from the surface of the second screw.

[0016] 3. This utility model, by setting a rotation limiting structure, facilitates secondary limiting when the clamping plate is engaged with the surface of the second screw. The rotating shaft is the core component, and the gear fixedly connected to its surface meshes with the toothed plate, so that the toothed plate can move with the rotation of the gear. The right side of the toothed plate passes through the clamping plate and contacts the surface of the second screw, thereby limiting the fixed position of the clamping plate. The rotating handle fixedly connected to the top of the rotating shaft is convenient for user operation and can easily adjust the position of the clamping plate.

[0017] 4. By setting a return spring, this utility model enables the toothed plate to quickly return to its original position after being subjected to force, thereby enhancing the stability and reliability of the structure. The left side of the return spring is fixedly connected to the left side of the inner wall of the card plate, ensuring the stable installation of the return spring and enabling the toothed plate to be effectively supported and rebound when subjected to force.

[0018] 5. This utility model uses a positioning post. When the rotating shaft rotates, the rotating shaft will drive the positioning post to rotate, causing the positioning post to move downward and enter the interior of the lower mold, thereby achieving the limiting and fixing of the clamping plate.

[0019] 6. This utility model, by setting a hexagonal block and a slot, since the hexagonal block is fixedly connected to the surface of the positioning post, the hexagonal block will limit the positioning post. When the rotating shaft rotates, the positioning post can only move up and down due to the limitation of the hexagonal block, so that the positioning post can be stably locked into the slot of the lower mold. Through the cooperation between the hexagonal block and the internal cavity of the card plate, the up and down movement of the hexagonal block in the card plate is realized. Attached Figure Description

[0020] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

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

[0022] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0023] Figure 3This is a sectional perspective view of the card plate;

[0024] Figure 4 This is a three-dimensional view of the axis of rotation.

[0025] In the diagram: 1. Upper mold; 2. Lower mold; 3. Mold frame; 4. Guide mechanism; 5. Gate; 6. Demolding mechanism; 7. Cooling channel; 8. First screw; 9. Clamping plate; 10. Second screw; 11. Groove; 12. Rotating shaft; 13. Gear; 14. Tooth plate; 15. Rotating handle; 16. Return spring; 17. Positioning pin; 18. Hexagonal block; 19. Slot. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of this utility model.

[0028] An injection mold includes an upper mold 1 and a lower mold 2. The upper mold 1 is located to the right of the lower mold 2. A mold frame 3 is fixedly connected to the side of the upper mold 1 and the lower mold 2 that is away from each other. A guide mechanism 4 is provided inside the upper mold 1 and the lower mold 2. Both ends of the guide mechanism 4 are fixedly connected to the mold frame 3.

[0029] A gate 5 is provided on the right side of the upper mold 1. The left side of the gate 5 passes through the mold frame 3 and extends into the interior of the upper mold 1. A demolding mechanism 6 is provided on the left side of the lower mold 2. The right side of the demolding mechanism 6 passes through the lower mold 2 and extends into the inner cavity of the lower mold 2. Cooling channels 7 for cooling plastic are provided inside both the upper mold 1 and the lower mold 2.

[0030] The top of the lower mold 2 is movably connected to a locking structure, and the right side of the locking structure is used in conjunction with the top of the upper mold 1.

[0031] Please see Figure 2 , Figure 3 and Figure 4 , Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a sectional perspective view of the card plate; Figure 4 This is a three-dimensional view of the axis of rotation.

[0032] The locking structure includes a first screw 8, the threaded end of which penetrates into the lower mold 2 and is threadedly connected to it. A retaining plate 9 is fitted onto the surface of the first screw 8. A second screw 10 is located on the right side inside the retaining plate 9, the threaded end of which penetrates into the upper mold 1. A groove 11 is provided on the surface of the retaining plate 9 for the second screw 10 to be screwed in. A rotation limiting structure is provided inside the retaining plate 9. The bottom of the rotation limiting structure penetrates into the lower mold 2, and the right side of the rotation limiting structure penetrates the retaining plate 9 and engages with the surface of the second screw 10, effectively reinforcing the upper mold. The connection stability between the upper mold 1 and the lower mold 2 is ensured by the first screw 8 penetrating the lower mold 2 and threadedly connecting it to the lower mold 2, which ensures the secure installation of the locking structure on the lower mold 2. The design of the clamping plate 9 and the screwing in of the second screw 10 not only further reinforce the locking structure, but also allow the upper mold 1 to be tightly engaged with the clamping plate 9 through the second screw 10. The setting of the rotation limit structure not only restricts the rotation of the clamping plate 9, but also prevents the clamping plate 9 from rotating during the process of the upper mold 1 and the lower mold 2 being subjected to force, thus preventing the clamping plate 9 from detaching from the surface of the second screw 10.

[0033] The rotation limiting structure includes a rotating shaft 12 located inside the clamping plate 9. A gear 13 is fixedly connected to the surface of the rotating shaft 12. A toothed plate 14 meshes with the front side of the surface of the gear 13. The right side of the toothed plate 14 penetrates the clamping plate 9 and extends to the surface of the second screw 10. A handle 15 is fixedly connected to the top of the rotating shaft 12, which facilitates secondary limiting when the clamping plate 9 is engaged with the surface of the second screw 10. As the core component, the rotating shaft 12 has a gear 13 fixedly connected to its surface that meshes with the toothed plate 14, allowing the toothed plate 14 to move as the gear 13 rotates. The right side of the toothed plate 14 penetrates the clamping plate 9 and contacts the surface of the second screw 10, thereby limiting the fixed position of the clamping plate 9. The handle 15 fixedly connected to the top of the rotating shaft 12 facilitates user operation and allows for easy adjustment of the position of the clamping plate 9.

[0034] A return spring 16 is fixedly connected to the left side of the toothed plate 14. The left side of the return spring 16 is fixedly connected to the left side of the inner wall of the clamping plate 9, which enables the toothed plate 14 to quickly return to its original position after being subjected to force, thereby enhancing the stability and reliability of the structure. The fixed connection between the left side of the return spring 16 and the left side of the inner wall of the clamping plate 9 ensures the stable installation of the return spring 16 and also enables the toothed plate 14 to be effectively supported and rebound when subjected to force.

[0035] The bottom of the surface of the rotating shaft 12 is threaded, and the bottom of the surface of the rotating shaft 12 is threaded to a positioning pin 17. The bottom of the positioning pin 17 passes through the clamping plate 9 and extends into the interior of the lower mold 2. When the rotating shaft 12 rotates, the rotating shaft 12 will drive the positioning pin 17 to rotate, causing the positioning pin 17 to move downward and enter the interior of the lower mold 2, thereby limiting and fixing the clamping plate 9.

[0036] A hexagonal block 18 is fixedly connected to the surface of the positioning post 17. The interior of the clamping plate 9 has a cavity for the hexagonal block 18 to move up and down. The top of the lower mold 2 has a slot 19 for the positioning post 17 to be inserted. Since the hexagonal block 18 is fixedly connected to the surface of the positioning post 17, the hexagonal block 18 will limit the positioning post 17. When the rotating shaft 12 rotates, the positioning post 17 can only move up and down due to the limitation of the hexagonal block 18, so that the positioning post 17 can be stably inserted into the slot 19 of the lower mold 2. Through the cooperation between the hexagonal block 18 and the cavity inside the clamping plate 9, the up and down movement of the hexagonal block 18 in the clamping plate 9 is realized.

[0037] Working Principle: In use, the upper mold 1 and lower mold 2 are first brought close together. The guide mechanism 4 guides the mold, ensuring accurate alignment. The gate 5 injects molten plastic into the mold cavity. The cooling channels 7 inside the upper mold 1 and lower mold 2 effectively reduce the plastic temperature. The demolding mechanism 6 on the left side of the lower mold 2 ejects the product after molding. When the mold needs to be closed for disassembly and hoisting, the locking structure activates. The first screw 8 penetrates the lower mold 2 and is threadedly connected, ensuring a secure installation of the locking structure. The clamping plate 9 is placed in the appropriate position. Rotating the clamping plate 9 causes it to rotate around the first screw 8. When the groove 11 of the clamping plate 9 engages with the surface of the second screw 10, the rotation limiting structure begins to operate. Rotating the handle 15 causes the rotating shaft 12 to rotate, which in turn drives the gear 13 to rotate. The gear 13 meshes with the toothed plate 14, causing the toothed plate 14 to move to the right and press against the surface of the second screw 10, thus restricting the rotation of the clamping plate 9. Simultaneously, the threads on the surface of the rotating shaft 12 cause the positioning pin 17 to move downward and enter the slot 19 of the lower mold 2, thereby limiting and fixing the clamping plate 9. Since the hexagonal block 18 is fixedly connected to the surface of the positioning pin 17, the hexagonal block 18 will limit the positioning pin 17, ensuring that the positioning pin 17 can be firmly inserted into the slot 19. The clamping plate 9 stably connects the upper mold 1 and the lower mold 2 through the first screw 8 and the second screw 10, facilitating the hoisting of the upper mold 1 and the lower mold 2 and preventing the upper mold 1 and the lower mold 2 from separating during the hoisting process.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An injection mold, characterized in that: It includes an upper mold (1) and a lower mold (2). The upper mold (1) is located to the right of the lower mold (2). A mold frame (3) is fixedly connected to the side of the upper mold (1) and the lower mold (2) that is far away from each other. A guide mechanism (4) is provided inside the upper mold (1) and the lower mold (2). Both ends of the guide mechanism (4) are fixedly connected to the mold frame (3). The upper mold (1) is provided with a gate (5) on the right side. The left side of the gate (5) passes through the mold frame (3) and extends into the interior of the upper mold (1). The lower mold (2) is provided with a demolding mechanism (6) on the left side. The right side of the demolding mechanism (6) passes through the lower mold (2) and extends into the inner cavity of the lower mold (2). Both the upper mold (1) and the lower mold (2) are provided with cooling channels (7) for cooling the plastic. The top of the lower mold (2) is movably connected to a locking structure, and the right side of the locking structure is used in conjunction with the top of the upper mold (1). The locking structure includes a first screw (8), the threaded end of the first screw (8) penetrates into the interior of the lower mold (2) and is threadedly connected to the lower mold (2), a retaining plate (9) is fitted on the surface of the first screw (8), a second screw (10) is provided on the right side inside the retaining plate (9), the threaded end of the second screw (10) penetrates into the interior of the upper mold (1), a groove (11) for the second screw (10) to be screwed into is provided on the surface of the retaining plate (9), a rotation limiting structure is provided inside the retaining plate (9), the bottom of the rotation limiting structure penetrates into the interior of the lower mold (2), and the right side of the rotation limiting structure penetrates the retaining plate (9) and is used in conjunction with the surface of the second screw (10); The rotation limiting structure includes a rotating shaft (12), which is located inside the clamping plate (9). A gear (13) is fixedly connected to the surface of the rotating shaft (12). A toothed plate (14) meshes with the front side of the surface of the gear (13). The right side of the toothed plate (14) passes through the clamping plate (9) and extends to the surface of the second screw (10). The top of the rotating shaft (12) passes through the clamping plate (9) and is fixedly connected to a handle (15).

2. The injection mold according to claim 1, characterized in that: A reset spring (16) is fixedly connected to the left side of the toothed plate (14), and the left side of the reset spring (16) is fixedly connected to the left side of the inner wall of the card plate (9).

3. The injection mold according to claim 1, characterized in that: The bottom of the surface of the rotating shaft (12) is threaded, and the bottom of the surface of the rotating shaft (12) is threaded with a positioning post (17). The bottom of the positioning post (17) passes through the card plate (9) and extends into the interior of the lower mold (2).

4. The injection mold according to claim 3, characterized in that: The surface of the positioning post (17) is fixedly connected to a hexagonal block (18), the interior of the card plate (9) is provided with a cavity for the hexagonal block (18) to move up and down, and the top of the lower mold (2) is provided with a slot (19) for the positioning post (17) to be inserted.

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