Demolding ejector pin component of mold

Abstract

The utility model discloses a demoulding ejector pin component of a mould, which relates to the technical field of mould ejector pins and comprises a base and an ejector pin, a fixing groove is fixedly arranged in the base, the lower end of the ejector pin is inserted into the fixing groove, and the horizontal sections of the fixing groove and the ejector pin are both of a circular structure. A clamping assembly is arranged in the fixing groove, the clamping assembly is used for fixing an ejector pin, the clamping assembly comprises a stand column and an arc-shaped plate, the stand column is fixedly arranged in the middle of the fixing groove, a sliding groove is fixedly formed in the stand column, and a two-way lead screw is rotationally arranged in the sliding groove; the two-way lead screw is rotationally connected with the base through a power assembly, and two sliding blocks are connected to the outer ring of the two-way lead screw in a threaded mode. In the using process, the ejector pin can be disassembled and assembled only by rotating the grab handle forwards and backwards, rapidness and high efficiency are achieved, and the problem that in the prior art, when a demolding ejector pin is replaced, the disassembly and assembly efficiency of the ejector pin is low is solved.

Description

Technical Field

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

[0002] Ejector pins are tools used to separate molded products from the mold. Traditional ejector pins consist of a cylindrical ejector pin rod and a cylindrical ejector pin countersunk head integrated with the cylindrical ejector pin rod. The cylindrical ejector pin countersunk head is located at one end of the cylindrical ejector pin rod, and the cylindrical ejector pin is a cylinder with an equal outer diameter. This type of ejector pin is installed in the ejector pin mounting hole in the mold. When it is necessary to eject the molded product, the ejector pin rod of the ejector pin extends out from the mounting hole, and the molded product is ejected.

[0003] The existing patent publication number CN221736819U discloses an ejector pin for a mold. In this solution, when the ejector pin is installed, pressing the ejector pin downwards moves it, thereby driving the crossbar downwards to squeeze the return spring. At the same time as the crossbar moves downwards, the connecting rod pulls the clamping plate to move inwards inside the support plate, clamping the ejector pin. Then, a fastening screw is inserted into the mounting hole to complete the limit. This design allows for quick disassembly and assembly between the ejector pin and the base, is simple to operate, realizes quick replacement and maintenance of the ejector pin, and improves production efficiency.

[0004] However, the aforementioned patent requires manual rotation of screws to fix the ejector pin to the base when installing the ejector pin. Firstly, the threaded hole on the ejector pin and the threaded hole on the base are difficult to align, making it inconvenient to quickly install the screw. Secondly, the screw and nut are small, making it inconvenient for people to directly rotate the screw by hand, requiring the use of tools, which is cumbersome. Therefore, we propose a mold ejector pin component to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of the present invention, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] Therefore, the purpose of this utility model is to provide a mold ejector pin component that can solve the problem of low disassembly and assembly efficiency of the ejector pin when replacing the ejector pin in the prior art.

[0007] To solve the above technical problems, this utility model provides a mold ejector pin component, which adopts the following technical solution: it includes a base and an ejector pin. The base is fixedly provided with a fixing groove. The lower end of the ejector pin is inserted into the fixing groove. The horizontal cross-section of the fixing groove and the ejector pin are both circular. The fixing groove is provided with a clamping component for fixing the ejector pin.

[0008] The clamping assembly includes a column and an arc-shaped plate. The column is fixedly installed in the middle of the fixing groove. A sliding groove is fixedly opened inside the column. A bidirectional lead screw is rotatably installed inside the sliding groove. The bidirectional lead screw is rotatably connected to the base through a power assembly. Two sliders are threadedly connected to the outer ring of the bidirectional lead screw. A first hinge seat is fixedly installed on both sides of the slider. An installation groove is fixedly installed inside the lower end of the ejector pin. Two arc-shaped plates are provided. The two arc-shaped plates are symmetrically arranged about the center line of the installation groove. Two second hinge seats are fixedly installed on the side of the arc-shaped plates. A push-pull rod is rotatably installed between the corresponding first and second hinge seats.

[0009] Preferably, the upper end of the fixing groove is provided with a tapered groove.

[0010] Preferably, a rubber plate is fixedly installed on the side of the arc-shaped plate away from the column.

[0011] Preferably, the power assembly includes a movable groove, which is fixedly disposed inside the base. One end of the bidirectional lead screw that extends movably into the movable groove is fixedly connected to a worm gear. A rotating shaft is rotatably disposed inside the movable groove. A worm is fixedly connected to the end of the rotating shaft. The worm gear and the worm mesh with each other. A handle is fixedly connected to the end of the rotating shaft that extends movably outside the base.

[0012] Preferably, the top of the ejector pin is threadedly connected to a top plate, and a wear-resistant layer is fixedly provided on the outer ring of the top plate.

[0013] Preferably, a plurality of heat-conducting rods are fixedly disposed in the middle of the bottom of the ejector pin, a heat dissipation cavity is fixedly disposed inside the ejector pin, and an air inlet and an exhaust outlet are fixedly disposed on the side wall of the ejector pin. The air inlet and the exhaust outlet are both connected to the heat dissipation cavity, and the exhaust outlet is located above the air inlet.

[0014] Preferably, the heat-conducting rod is located inside the heat dissipation cavity.

[0015] In summary, this utility model has at least one of the following beneficial effects:

[0016] 1. When using the ejector pin component of this mold, the ejector pin can be disassembled and assembled simply by rotating the handle in both directions. This is quick and efficient, solving the problem of low disassembly and assembly efficiency of ejector pins when replacing them in existing technologies.

[0017] 2. This utility model uses a top plate to replace the friction between the ejector pin and the mold. When the top plate needs to be replaced, it can be unscrewed and replaced with a new top plate, thereby avoiding the need to replace the entire ejector pin and extending the service life of the ejector pin.

[0018] 3. By connecting the air inlet through the air pipe, air is supplied to the heat dissipation cavity, thereby removing the heat from the ejector pin and the heat dissipation cavity and expelling it from the exhaust port. This cools down the ejector pin and the top plate, preventing the ejector pin from deforming due to prolonged heating. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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.

[0020] Figure 1 This is a schematic cross-sectional view of the ejector pin component of a mold according to the present invention.

[0021] Figure 2 This is a schematic cross-sectional view of the clamping assembly of this utility model;

[0022] Figure 3 This is a schematic diagram of the power component structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the cross-sectional structure of the top plate and heat-conducting rod of this utility model;

[0024] Figure 5 This is a three-dimensional structural diagram of the top plate and heat-conducting rod of this utility model, viewed from below.

[0025] Explanation of reference numerals in the attached drawings: 1. Base; 2. Fixing groove; 3. Ejector pin; 4. Mounting groove; 5. Movable groove; 6. Column; 7. Two-way lead screw; 8. Worm gear; 9. Worm; 10. Rotating shaft; 11. Handle; 12. Slider; 13. Arc plate; 14. Push-pull rod; 15. Rubber plate; 16. Heat dissipation cavity; 17. Air inlet; 18. Exhaust port; 19. Top plate; 20. Wear-resistant layer; 21. Heat-conducting rod; 22. Conical groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-5 This utility model provides an embodiment of a mold ejector pin component, including a base 1 and an ejector pin 3. A fixing groove 2 is fixedly provided inside the base 1. The lower end of the ejector pin 3 is inserted into the fixing groove 2. The horizontal cross-section of both the fixing groove 2 and the ejector pin 3 is circular. A clamping assembly is provided inside the fixing groove 2 to fix the ejector pin 3. The clamping assembly includes a column 6 and an arc plate 13. The column 6 is fixedly provided in the middle of the fixing groove 2. A sliding groove is fixedly provided inside the column 6. A bidirectional lead screw 7 is rotatably provided inside the sliding groove. The bidirectional lead screw 7 is rotatably connected to the base 1 through a power assembly. Two sliders 12 are threadedly connected to the outer ring of the bidirectional lead screw 7. A first hinge seat is fixedly provided on both sides of the slider 12. An installation groove 4 is fixedly provided inside the lower end of the ejector pin 3. Two arc plates 13 are provided. The two arc plates 13 are symmetrically arranged about the center line of the installation groove 4. Two second hinge seats are fixedly provided on the side of the arc plate 13. A push-pull rod 14 is rotatably provided between the corresponding first hinge seats and second hinge seats.

[0028] Furthermore, the power assembly includes a movable groove 5, which is fixedly installed inside the base 1. A worm gear 8 is fixedly connected to one end of a bidirectional lead screw 7 that extends movably into the movable groove 5. A rotating shaft 10 is rotatably installed inside the movable groove 5. A worm 9 is fixedly connected to the end of the rotating shaft 10. The worm gear 8 and the worm 9 mesh with each other. A handle 11 is fixedly connected to one end of the rotating shaft 10 that extends movably out of the base 1.

[0029] In the process of using the ejector pin component of this mold, when installing the ejector pin 3, insert the lower end of the ejector pin 3 into the fixing groove 2, rotate the handle 11 to drive the rotating shaft 10 and worm 9 to rotate, further drive the worm wheel 8 and the double-acting screw 7 to rotate, further drive the two sliders 12 to move closer to each other, and under the push of the push rod 14, the two arc plates 13 move away from each other, and the two arc plates 13 simultaneously press against the inner wall of the mounting groove 4, thereby fixing the ejector pin 3. When it is necessary to remove the ejector pin 3, rotate the handle 11 in the opposite direction, and similarly make the two arc plates 13 move closer to each other, thereby removing the fixation of the ejector pin 3, and the ejector pin 3 can be removed from the base 1. The operation is simple, quick and efficient, solving the problem of low disassembly and assembly efficiency of the ejector pin 3 when replacing the ejector pin in the existing technology.

[0030] Furthermore, a conical groove 22 is provided at the upper end of the fixing groove 2. The installation of the conical groove 22 facilitates the quick insertion of the ejector pin 3 into the interior of the fixing groove 2.

[0031] Furthermore, a rubber plate 15 is fixedly installed on the side of the arc plate 13 away from the column 6. The rubber plate 15 serves two purposes: firstly, it increases the friction between the arc plate 13 and the ejector pin 3, and secondly, it prevents the arc plate 13 from causing hard contact damage to the ejector pin 3.

[0032] Because the ejector pin 3 will rub against the mold during operation, causing its outer wall to be easily damaged, a top plate 19 is threadedly connected to the top of the ejector pin 3. A wear-resistant layer 20 is fixedly provided on the outer ring of the top plate 19, so that the top plate 19 replaces the ejector pin 3 in generating friction with the mold. The wear-resistant layer 20 extends the service life of the top plate 19. When the top plate 19 needs to be replaced, it can be unscrewed and replaced with a new top plate 19, thus avoiding the need to replace the entire ejector pin 3 and extending the service life of the ejector pin 3.

[0033] In addition, the ejector pin 3 generates heat during operation, and prolonged heating can cause the ejector pin 3 to deform. Therefore, several heat-conducting rods 21 are fixedly installed in the middle of the bottom of the ejector pin 3. A heat dissipation cavity 16 is fixedly installed inside the ejector pin 3. An air inlet 17 and an exhaust port 18 are fixedly installed on the side wall of the ejector pin 3. Both the air inlet 17 and the exhaust port 18 are connected to the heat dissipation cavity 16. The exhaust port 18 is located above the air inlet 17, and the heat-conducting rods 21 are located inside the heat dissipation cavity 16.

[0034] By connecting the air inlet 17 through the air pipe, air is supplied to the heat dissipation cavity 16, thereby removing the heat from the ejector pin 3 and the heat dissipation cavity 16 and expelling it from the exhaust port 18, thereby cooling the ejector pin 3 and the top plate 19 and preventing the ejector pin 3 from deforming due to prolonged heating.

[0035] Working principle: When installing the ejector pin 3, insert the lower end of the ejector pin 3 into the fixing groove 2, rotate the handle 11 to drive the rotating shaft 10 and worm 9 to rotate, further drive the worm wheel 8 and the double-acting screw 7 to rotate, further drive the two sliders 12 to move closer to each other, and under the push of the push-pull rod 14, the two arc plates 13 move away from each other, and the two arc plates 13 simultaneously press against the inner wall of the mounting groove 4, thereby fixing the ejector pin 3. When it is necessary to remove the ejector pin 3, rotate the handle 11 in the opposite direction, and similarly move the two arc plates 13 closer to each other, thereby removing the fixing of the ejector pin 3, and the ejector pin 3 can be removed from the base 1. The operation is simple, quick and efficient.

[0036] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A demolding ejector pin member of a mold comprising a base (1) and an ejector pin (3), characterized in that: The base (1) is fixedly provided with a fixing groove (2), the lower end of the ejector pin (3) is inserted into the fixing groove (2), and the horizontal cross-section of the fixing groove (2) and the ejector pin (3) are both circular. The fixing groove (2) is provided with a clamping component, which is used to fix the ejector pin (3). The clamping assembly includes a column (6) and an arc plate (13). The column (6) is fixedly installed in the middle of the fixed groove (2). A sliding groove is fixedly opened inside the column (6). A bidirectional lead screw (7) is rotatably installed inside the sliding groove. The bidirectional lead screw (7) is rotatably connected to the base (1) through a power assembly. Two sliders (12) are threadedly connected to the outer ring of the bidirectional lead screw (7). A first hinge seat is fixedly installed on both sides of the slider (12). An installation groove (4) is fixedly installed inside the lower end of the ejector pin (3). There are two arc plates (13). The two arc plates (13) are symmetrically arranged about the center line of the installation groove (4). Two second hinge seats are fixedly installed on the side of the arc plate (13). A push-pull rod (14) is rotatably installed between the corresponding first hinge seats and second hinge seats.

2. A demolding ejector pin member for a mold as set forth in claim 1, characterized in that: The upper end of the fixing groove (2) is provided with a tapered groove (22).

3. A mold ejector pin member according to claim 1, wherein: A rubber plate (15) is fixedly installed on the side of the arc-shaped plate (13) away from the column (6).

4. A mold ejector pin member according to claim 1 wherein: The power assembly includes a movable groove (5), which is fixedly installed inside the base (1). One end of the bidirectional lead screw (7) that extends into the movable groove (5) is fixedly connected to a worm gear (8). A rotating shaft (10) is rotatably installed inside the movable groove (5). A worm (9) is fixedly connected to the end of the rotating shaft (10). The worm gear (8) and the worm (9) mesh with each other. A handle (11) is fixedly connected to one end of the rotating shaft (10) that extends out of the base (1).

5. A mold ejector pin member according to claim 1 wherein: The top of the ejector pin (3) is threadedly connected to a top plate (19), and a wear-resistant layer (20) is fixedly provided on the outer ring of the top plate (19).

6. A demolding ejector pin member for a mold as set forth in claim 5, characterized in that: A number of heat-conducting rods (21) are fixedly arranged in the middle of the bottom of the ejector pin (3). A heat dissipation cavity (16) is fixedly arranged inside the ejector pin (3). An air inlet (17) and an exhaust port (18) are fixedly arranged on the side wall of the ejector pin (3). The air inlet (17) and the exhaust port (18) are both connected to the heat dissipation cavity (16). The exhaust port (18) is located above the air inlet (17).

7. A demolding ejector pin member for a mold as set forth in claim 6, characterized in that: The heat-conducting rod (21) is located inside the heat dissipation cavity (16).

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