Mold ejector pin with pin core convenient to replace

Abstract

The utility model discloses a mold ejector pin convenient to replace a pin core, which comprises two pin bodies, a pin core connecting piece is inserted into one end of each pin body, a pin core is inserted into one end of each pin core connecting piece, a fixed base is inserted into one end, far away from the pin core, of each pin core connecting piece, and one end, facing the fixed base, of each pin core is inserted into the fixed base. Clamping grooves are formed in the top and the bottom of an inner cavity of the needle core connecting piece, and movable cavities are formed in the two sides of the inner cavity of the needle core connecting piece. The sectional type structural design is adopted, and the needle core is installed in an inserting and rotating buckle connecting mode, so that compared with a threaded connecting mode, the twisting force is small, the needle core can be easily screwed in the detaching process, and the needle core can be conveniently detached. And the stability of the ejector pin can be ensured during working, the pin core can be quickly and easily disassembled and replaced even in a narrow space, machine operation can be quickly recovered, product production can be quickly recovered, and convenience is provided for working and using of a user.

Description

Technical Field

[0001] This utility model relates to the field of mold ejector pin core replacement technology, and in particular to a mold ejector pin that facilitates core core replacement. Background Technology

[0002] Ejector pins are an important component of molds, serving multiple functions such as positioning, support, clamping, and ejection. Traditional mold ejector pins are single, unassembled pin bodies, installed using threaded connections. This method is prone to space constraints; in the confined space of a mold, it's difficult for users to apply force to loosen and disassemble the firmly rotated ejector pin. Furthermore, space limitations make it difficult to insert auxiliary tools, further hindering disassembly. This results in difficulty in quickly removing and replacing damaged ejector pins, impacting machine operation and production schedules.

[0003] To address the aforementioned problems, this utility model provides improvements. Summary of the Invention

[0004] This invention proposes a convenient ejector pin for replacing the core mold, thus solving the aforementioned problems existing in the use of the prior art.

[0005] The technical solution of this utility model is implemented as follows: A needle core mold ejector pin that is easy to replace includes two needle bodies. One end of each needle body is inserted with a needle core connector, and one end of the needle core connector is inserted with a needle core. The end of the needle core connector away from the needle core is inserted with a fixed base. The end of the needle core facing the fixed base is inserted into the fixed base. The top and bottom of the inner cavity of the needle core connector are provided with slots. Movable cavities are provided on both sides of the inner cavity of the needle core connector. A top block is slidably installed inside the movable cavity. A second spring is fixedly connected to one side of the top block. The end of the second spring away from the top block is fixedly connected to the inner wall of the movable cavity. The end of the needle core is fixedly connected with a locking block that matches the slot. The locking block matches the top block. One end of the needle core connector has an installation cavity that matches the needle core.

[0006] As described above, this utility model is used to facilitate the replacement of the ejector pin of the needle core mold. Further, one side of the needle core connector is provided with an insertion cavity adapted to the fixed base, and one end of the needle core connector is provided with an adaptation cavity adapted to the needle core.

[0007] The present invention, as described above, is used to facilitate the replacement of the ejector pin of the needle core mold. Further, a spring is sleeved on the surface of the needle core and located in the adapter cavity. The two ends of the spring are respectively fixedly connected to the inner wall of the needle core and the adapter cavity.

[0008] The present invention, as described above, is used to facilitate the replacement of the core mold ejector pin. Further, one end of the two needle bodies is sleeved with a base plate, and a movable mold is sleeved on the outer side of the base plate. A movable opening adapted to the base plate is opened on one side of the movable mold.

[0009] As described above, this utility model is used to facilitate the replacement of the ejector pin of the core mold. Further, a fixed mold is provided on one side of the movable mold, and the fixed mold has a molding cavity adapted to the movable mold on the side facing the movable mold.

[0010] As described above, this utility model is used to facilitate the replacement of the ejector pin of the core mold. Further, the fixed mold has an injection hole communicating with the molding cavity on the side away from the movable mold.

[0011] As described above, this utility model is used to facilitate the replacement of the needle core mold ejector pin. Further, the movable mold has two positioning holes on one side that are adapted to the needle body.

[0012] In summary, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model adopts a segmented structural design, and the needle core is installed by plugging and rotating buckle connection. Compared with the threaded connection, the torque is small and it can be easily turned during disassembly. It can also ensure the stability of the pin during operation. Even in a narrow space, the needle core can be quickly and easily disassembled and replaced, quickly restoring machine operation and product production, providing convenience for users.

[0014] 2. This utility model features a plug-in cavity and an adapter cavity. The plug-in cavity is used to plug into and install the fixed base, ensuring that the fixed base can be matched and installed with the needle core. The adapter cavity is used to allow the needle core to move, ensuring that there is enough space for adaptation when installing the needle core, thus providing convenience for the user's installation work.

[0015] 3. With the setting of spring one, the needle core will be pressed when assembled with the fixed base. Therefore, the needle core will compress spring one, and spring one will provide a reverse thrust after the needle core is installed. This improves the tightness and firmness of the installation connection between the needle core and the fixed base, ensures that the ejector pin can work normally, and provides convenience for users.

[0016] 4. This utility model features a movable mold and a base plate. The movable mold is used for closing and opening with the fixed mold, while the base plate is fixed to the machine. The movable mold can move on the base plate. When opening the mold, the movable mold moves in the opposite direction to the fixed mold. The product formed in the molding cavity will stick to the end of the movable mold. During the movement of the movable mold, the pins will extend from the movable mold to push the product out of the movable mold, thus demolding the product and facilitating material removal for the user, providing convenience for the user's work.

[0017] 5. This utility model, through the setting of a fixed mold and a molding cavity, uses a fixed mold for closing and opening with the movable mold, thereby realizing the normal operation of the mold and ensuring the normal operation of the machine. The molding cavity is used for injecting the product solution. After the fixed mold and the movable mold are closed, the product solution is injected into the molding cavity for molding, ensuring the smooth production of the product.

[0018] 6. This utility model features an injection hole that is located on the fixed mold. When the movable mold and the fixed mold are closed, the solution is injected into the molding cavity through the injection hole. Then, the fixed mold and the movable mold are opened to remove the product, thus ensuring the normal production of the product and providing convenience for the user's work.

[0019] 7. This utility model features a positioning hole for installing a ejector pin. The ejector pin passes through the positioning hole for installation, which guides the ejector pin and ensures that it moves along a predetermined trajectory, providing convenience for the user. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

[0022] Figure 2 This is a three-dimensional sectional view of the present invention;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of the needle.

[0024] Figure 4 This is a three-dimensional sectional view of the needle core connector.

[0025] Figure 5A schematic diagram of the three-dimensional structure assembly of the needle core;

[0026] Figure 6 This is a cross-sectional view of the three-dimensional structure of the fixed base.

[0027] In the diagram: 1. Needle body, 2. Movable mold, 3. Needle core connector, 4. Needle core, 5. Spring 1, 6. Fixed base, 7. Movable cavity, 8. Slot, 9. Top block, 10. Spring 2, 11. Base plate, 12. Fixed mold, 13. Molding cavity, 14. Injection hole, 15. Slot, 16. Movable opening, 17. Adaptor cavity, 18. Mounting cavity, 19. Insertion cavity. Detailed Implementation

[0028] The following will refer to the appendix in the embodiments of this utility model. Figure 1-6 The technical solutions in the embodiments of this utility model are clearly and completely described herein. 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 skilled in the art without creative effort are within the protection scope of this utility model. Example

[0029] A replaceable ejector pin for a mold includes two pin bodies 1. One end of each pin body 1 is connected to a ejector pin connector 3, and one end of each ejector pin connector 3 is connected to a ejector pin 4. The end of the ejector pin connector 3 away from the ejector pin 4 is connected to a fixed base 6. The end of the ejector pin 4 facing the fixed base 6 is inserted into the fixed base 6. The top and bottom of the inner cavity of the ejector pin connector 3 are provided with slots 8. Movable cavities 7 are provided on both sides of the inner cavity of the ejector pin connector 3. A top block 9 is slidably installed inside the movable cavity 7. A second spring 10 is fixedly connected to one side of the top block 9. The end of the second spring 10 away from the top block 9 is fixedly connected to the inner wall of the movable cavity 7. A locking block 15 that matches the slot 8 is fixedly connected to the end of the ejector pin 4. The locking block 15 matches the top block 9. One end of the ejector pin connector 3 is provided with an installation cavity 18 that matches the ejector pin 4.

[0030] The specific usage process is as follows: First, adjust the machine to the mold-open state. At this time, the ejector pin will be exposed from the movable mold 2, and the needle core connector 3 will also move out from the movable mold 2. The needle core 4 can then be moved out from the movable mold 2. Then, the needle core can be disassembled. During disassembly, the user presses the needle core 4 slightly, compressing the spring 5. During this time, the needle core 4 is not released. At this time, the end of the needle core 4 located in the fixed base 6 is in a relaxed state, and then the needle core 4 can be easily rotated. As the needle core 4 rotates, the locking block 15 will also rotate. The locking block 15, which was originally locked in the slot 8, moves out of the inner cavity of the slot 8 and into the mounting cavity 18 as the needle core 4 rotates. At the same time, as the locking block 15 rotates with the needle core 4, it will also squeeze the ejector block 9 into the movable mold 2. Inside cavity 7, the movable cavity 7 compresses spring 10, allowing the end of needle core 4 to move out of mounting cavity 18 and from the fixed base 6. During this process, spring 5 provides a pushing force to needle core 4, causing more of the end of needle core 4 to extend from the adapter cavity 17, thus providing assistance and convenience for the user to remove needle core 4. Afterward, the user can simply remove needle core 4 from needle core connector 3 and replace it with a new needle core 4. Align the end of needle core 4 with the adapter cavity 17 and insert it. During this process, the end of needle core 4 will pass through spring 5 and be controlled to insert the end of needle core 4 into the fixed base 6. Then, press needle core 4, which will compress spring 5. Then rotate needle core 4, and the locking block 15 on one end of needle core 4 located in mounting cavity 18 will also rotate accordingly. The needle core 4 is fixed in place by the locking block 15, which then engages with the corresponding slot 8. During the insertion of the needle core 4 into the mounting cavity 18, the locking block 15 also presses against the top block 9, pushing it into the corresponding spring 10 and compressing the spring 10 until the locking block 15 is fully engaged in the slot 8. Then, the top block 9 is pushed back to its original position by the spring 10 and presses against the locking block 15, limiting its movement and ensuring the stability of the needle core after installation. This completes the needle core replacement. The entire replacement process can be easily completed between the movable mold 2 and the fixed mold 12 after mold opening, without spatial limitations, allowing for rapid needle core replacement and ensuring the machine can quickly resume operation and production. The production process of the product aims to provide convenience for users. The insertion cavity 19 is used to insert and install the fixed base 6, ensuring that the fixed base 6 can be matched and installed with the needle core 4. The adapter cavity 17 is used for the movement of the needle core 4, ensuring sufficient space for adaptation during installation, thus facilitating user installation. When the needle core 4 is assembled with the fixed base 6, it will be pressed, compressing the spring 5. The spring 5 will then provide a reverse thrust after the needle core 4 is installed, thereby improving the tightness and firmness of the connection between the needle core 4 and the fixed base 6, ensuring the ejector pin can work normally, and providing convenience for users. The movable mold 2 is used for mold closing and opening with the fixed mold 12. The base plate 11 is fixed to the machine.The movable mold 2 is movable on the base plate 11. During mold opening, the movable mold 2 moves in the opposite direction to the fixed mold 12. The product formed in the molding cavity 13 adheres to the end of the movable mold 2. During the movement of the movable mold 2, the needle 1 extends from within the movable mold 2, ejecting the product from it, thus demolding the product for easy material removal and user convenience. The fixed mold 12 is used for closing and opening with the movable mold 2, ensuring normal mold operation and machine function. The molding cavity 13 is used for injecting the product solution. After the fixed mold 12 and movable mold 2 are closed, the product solution is injected into the molding cavity 13 for molding, ensuring smooth product production. The injection hole 14 is located on the fixed mold 12. When the movable mold 2 and fixed mold 12 are closed, the solution is injected into the molding cavity 13 through the injection hole 14 for molding. Then, the fixed mold 12 and movable mold 2 open to remove the product, ensuring efficient production and providing convenience for the user.

[0031] Therefore, a segmented structural design is adopted, and the needle core is installed by plugging and rotating buckle connection. Compared with the threaded connection, the torque is small, and it can be easily turned during disassembly. It can also ensure the stability of the ejector pin during operation. Even in a confined space, the needle core can be quickly and easily disassembled and replaced, quickly restoring machine operation and product production, providing convenience for users.

[0032] The needle core connector 3 has a plug-in cavity 19 on one side that is adapted to the fixed base 6, and an adapter cavity 17 on one end that is adapted to the needle core 4.

[0033] Specifically, the insertion cavity 19 and the adapter cavity 17 are designed so that the insertion cavity 19 is used to insert and install the fixing base 6, ensuring that the fixing base 6 can be matched and installed with the needle core 4. The adapter cavity 17 is used to allow the needle core 4 to move, ensuring that there is enough space for adaptation when installing the needle core 4, thus providing convenience for the user's installation work.

[0034] The surface of the needle core 4 is fitted with a spring 5 located in the adapter cavity 17, and the two ends of the spring 5 are respectively fixedly connected to the inner wall of the needle core 4 and the adapter cavity 17.

[0035] Specifically, the spring 5 is designed so that the needle core 4 will be pressed when assembled with the fixed base 6, thus compressing the spring 5. The spring 5 will provide a reverse thrust after the needle core 4 is installed, thereby improving the tightness and firmness of the installation connection between the needle core 4 and the fixed base 6, ensuring that the ejector pin can work normally and providing convenience for the user's work.

[0036] Two needle bodies 1 are fitted with a base plate 11 at one end. A movable mold 2 is fitted on the outer side of the base plate 11. A movable opening 16 adapted to the base plate 11 is provided on one side of the movable mold 2.

[0037] Specifically, the movable mold 2 and the base plate 11 are configured such that the movable mold 2 is used to close and open with the fixed mold 12, and the base plate 11 is fixed on the machine. The movable mold 2 can move on the base plate 11. Thus, when opening the mold, the movable mold 2 moves in the opposite direction to the fixed mold 12 to open the mold. The product formed in the molding cavity 13 will stick to the end of the movable mold 2. During the movement of the movable mold 2, the needle 1 will extend from the movable mold 2 to push the product out of the movable mold 2, thereby realizing the demolding of the product, so as to facilitate the user to pick up the material and provide convenience for the user's work.

[0038] A fixed mold 12 is provided on one side of the movable mold 2, and the fixed mold 12 has a molding cavity 13 adapted to the movable mold 2 on the side facing the movable mold 2.

[0039] Specifically, the fixed mold 12 and the molding cavity 13 are designed so that the fixed mold 12 is used to close and open with the movable mold 2, thereby enabling the mold to work normally and ensuring the normal operation of the machine. The molding cavity 13 is used to inject the product solution. After the fixed mold 12 and the movable mold 2 are closed, the product solution is injected into the molding cavity 13 to form the product, ensuring the smooth production of the product.

[0040] The fixed mold 12 has an injection hole 14 on the side away from the movable mold 2, which communicates with the molding cavity 13.

[0041] Specifically, the injection hole 14 is set on the fixed mold 12. When the movable mold 2 and the fixed mold 12 are closed, the solution is injected into the molding cavity 13 through the injection hole 14 to form the product. Then the fixed mold 12 and the movable mold 2 are opened to remove the product, thereby ensuring the normal production of the product and providing convenience for the user's work.

[0042] The movable mold 2 has two positioning holes on one side that are adapted to the needle body 1.

[0043] Specifically, the positioning hole is used to install the ejector pin. The ejector pin passes through the positioning hole for installation, which guides the ejector pin and ensures that it can move along a predetermined trajectory, providing convenience for the user. This is existing technology and will not be explained in detail in this article.

[0044] It should be noted that the functions to be achieved by each hardware component in this utility model are supported by a large number of mature technologies and belong to the prior art. The essence of this utility model is to optimize and combine existing hardware and its connection methods for specific application scenarios to meet the adaptation requirements of specific application scenarios and solve the problems raised in the background technology (without involving improvements to the internal software of the hardware).

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A type of ejector pin for easy replacement of a core die, comprising two pin bodies (1), characterized in that: One end of the needle body (1) is connected to a needle core connector (3), and one end of the needle core connector (3) is connected to a needle core (4). A fixed base (6) is connected to the end of the needle core connector (3) away from the needle core (4). The end of the needle core (4) facing the fixed base (6) is inserted into the fixed base (6). The top and bottom of the inner cavity of the needle core connector (3) are provided with slots (8), and movable cavities (7) are provided on both sides of the inner cavity of the needle core connector (3). A top block (9) is slidably installed inside the movable cavity (7). A spring (10) is fixedly connected to one side of the top block (9). The end of the spring (10) away from the top block (9) is fixedly connected to the inner wall of the movable cavity (7). A locking block (15) that matches the locking groove (8) is fixedly connected to the end of the needle core (4). The locking block (15) matches the top block (9). An installation cavity (18) that matches the needle core (4) is opened at one end of the needle core connector (3).

2. The ejector pin for a mold that facilitates replacement of the core die according to claim 1, characterized in that: The needle core connector (3) has a plug-in cavity (19) on one side that is compatible with the fixed base (6), and the needle core connector (3) has an adapter cavity (17) at one end that is compatible with the needle core (4).

3. The ejector pin for a mold that facilitates replacement of the core die according to claim 2, characterized in that: The surface of the needle core (4) is fitted with a spring (5) located in the adapter cavity (17), and the two ends of the spring (5) are fixedly connected to the inner wall of the needle core (4) and the adapter cavity (17), respectively.

4. The ejector pin for a mold core that is easy to replace according to claim 3, characterized in that: Two needle bodies (1) are fitted with a base plate (11) at one end. A movable mold (2) is fitted on the outside of the base plate (11). A movable opening (16) adapted to the base plate (11) is opened on one side of the movable mold (2).

5. The ejector pin for a mold core replacement device according to claim 4, characterized in that: A fixed mold (12) is provided on one side of the movable mold (2), and the fixed mold (12) has a molding cavity (13) adapted to the movable mold (2) on the side facing the movable mold (2).

6. The ejector pin for a mold core that is easy to replace according to claim 5, characterized in that: The fixed mold (12) has an injection hole (14) on the side away from the movable mold (2) that communicates with the molding cavity (13).

7. The ejector pin for a mold that facilitates replacement of the core die according to claim 6, characterized in that: The movable mold (2) has two positioning holes on one side that are adapted to the needle body (1).

Images