Push-out core-pulling mold

Abstract

The utility model discloses a push-out core-pulling mold which comprises a bottom plate, side plates are symmetrically arranged on one side of the bottom plate, a top plate is arranged at the tops of the side plates, and a connecting assembly is installed below the top plate. An air cylinder is installed on the surface of the bottom plate, the output end of the air cylinder is connected with an output rod, one end of the output rod is hinged to a connecting rod, one end of the connecting rod is hinged to an L-shaped core-pulling arm, and the upper portion of the L-shaped core-pulling arm is hinged to a connecting assembly. The stabilizing block is inserted into the notch and is used for preventing the shaft core from being separated from the interior of the embedded block; when the L-shaped core-pulling arm needs to be replaced, the L-shaped core-pulling arm can be disassembled and taken down only by taking down the bolt on the stabilizing block, taking out the shaft core and synchronously disconnecting the hinge connection between the connecting rod and the L-shaped core-pulling arm. When the L-shaped core-pulling arm needs to be replaced and detached, the motor is started, and the threaded rod and the threaded shaft block are meshed to push the connecting block to move up and down; and the connecting block moves downwards, so that the L-shaped core-pulling arm can be conveniently disassembled and assembled below by a worker.

Description

Technical Field

[0001] This utility model belongs to the field of core-pulling mold technology, specifically relating to a core-pulling mold for ejection. Background Technology

[0002] In the mold manufacturing and injection molding industry, core-pulling molds are a commonly used type of mold, primarily used to produce plastic products with internal holes or complex structures. The L-shaped core-pulling arm in this type of mold is one of the core components, responsible for precisely extracting the core structure from the molded plastic product during mold opening and closing, ensuring product integrity and quality. However, in actual production, the L-shaped core-pulling arm may require periodic replacement or maintenance due to long-term use, wear, or design changes.

[0003] Traditional core-pulling arm replacement processes are often complex and time-consuming. Traditional fixing methods may involve multiple fasteners and complex connection structures, resulting in cumbersome disassembly and installation processes. This not only affects production efficiency but may also increase the labor intensity and safety risks for operators. In addition, due to the limited internal space of molds, especially in large or complex molds, the disassembly and assembly of L-shaped core-pulling arms often need to be carried out in a confined space, further increasing the difficulty of operation. Utility Model Content

[0004] The purpose of this invention is to provide a core-pulling mold to solve the problems of disassembly and assembly of core-pulling arms and molds in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A core-pulling mold includes a base plate, side plates symmetrically arranged on one side of the base plate, a top plate on the top of the side plates, and a connecting assembly installed below the top plate; a cylinder is mounted on the surface of the base plate, an output rod is connected to the output end of the cylinder, a connecting rod is hinged to one end of the output rod, an L-shaped core-pulling arm is hinged to one end of the connecting rod, and the upper part of the L-shaped core-pulling arm is hinged to the connecting assembly; an adjusting mechanism is mounted on the surface of the top plate, and the adjusting mechanism is connected to the connecting assembly.

[0007] Furthermore, the connecting assembly includes a connecting block and a top block. The top block is installed below the top plate. A branch arm is symmetrically provided at one end of the top block. An embedded block is installed inside the branch arm. A countersunk hole is provided on the surface of the branch arm, and the countersunk hole passes through the embedded block. A connecting block is installed at one end of the top block away from the branch arm. A shaft core is installed inside the embedded block. An L-shaped core-pulling arm is installed between the connecting block and the embedded block. The L-shaped core-pulling arm is rotatably connected to the shaft core.

[0008] Furthermore, a notch is provided on the surface of the branch arm, and a stabilizing block is fitted inside the notch. A bolt is mounted on the surface of the stabilizing block. The stabilizing block is inserted into the notch to prevent the shaft core from detaching from the inner block. The bolt is then installed inside the stabilizing block and fixed inside the shaft core. When it is necessary to replace the L-shaped core-pulling arm, simply remove the bolt on the stabilizing block, take out the shaft core, and simultaneously disconnect the connecting rod and the hinge connection of the L-shaped core-pulling arm to disassemble and remove the L-shaped core-pulling arm.

[0009] Furthermore, the adjusting mechanism includes a motor, the output end of which is connected to a threaded rod. A threaded shaft block that meshes with the threaded rod is installed on one side of the connecting block. Slider blocks are symmetrically arranged on both sides of the threaded shaft block. A fixing block is installed on the inner side of the side plate. Slide rods are installed on both sides of the threaded rod. The slide rods are fixed between the top plate and the fixing block. The sliders are slidably connected to the slide rods.

[0010] Furthermore, a key shaft is provided at one end of the shaft core. The key shaft is used to stabilize the position of the shaft core and prevent it from rotating within the inner block, and a keyway is provided within the inner block for cooperating with the key shaft.

[0011] The technical solution of this utility model has the following beneficial effects:

[0012] 1. Insert the stabilizing block into the notch. The stabilizing block is used to prevent the shaft core from detaching from the inner block. Then, install the bolt inside the stabilizing block and fix it inside the shaft core. When it is necessary to replace the L-shaped core pull arm, simply remove the bolt on the stabilizing block, take out the shaft core, and simultaneously disconnect the connecting rod and the hinge connection of the L-shaped core pull arm to disassemble and remove the L-shaped core pull arm.

[0013] 2. When it is necessary to replace or disassemble the L-shaped core-pulling arm, start the motor, and the threaded rod and threaded shaft block will mesh with each other to push the connecting block up and down; as the position of the connecting block changes, the connecting rod will follow and deflect at an angle. According to the adjustment distance, the linkage cylinder needs to be started to adjust the position of the output rod; the connecting block moves downward, which makes it convenient for the staff to disassemble and install the L-shaped core-pulling arm from below. Attached Figure Description

[0014] 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.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a partial structural schematic diagram of the present invention.

[0017] Figure 3 This is a structural diagram of the adjustment mechanism of this utility model.

[0018] Figure 4 This is a structural diagram of the connection component of this utility model.

[0019] Figure 5 This is an internal cross-sectional view of the connecting component of this utility model.

[0020] Reference numerals: 10. Base plate; 11. Side plate; 12. Top plate; 13. Cylinder; 14. Output rod; 15. Connecting rod; 16. L-shaped core-pulling arm; 17. Mold; 18. Core-pulling head; 20. Connecting block; 21. Top block; 22. Branch arm; 23. Embedded block; 24. Countersunk hole; 25. Cutout; 26. Stabilizing block; 27. Shaft core; 28. Bolt; 30. Slider; 31. Fixing block; 32. Threaded shaft block; 33. Slide rod; 34. Threaded rod; 35. Motor. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0022] Example 1:

[0023] refer to Figure 1 A core-pulling mold includes a base plate 10, a side plate 11 symmetrically arranged on one side of the base plate 10, a top plate 12 arranged on the top of the side plate 11, and a connecting component installed below the top plate 12.

[0024] A cylinder 13 is mounted on the surface of the base plate 10. An output rod 14 is connected to the output end of the cylinder 13. A connecting rod 15 is hinged to one end of the output rod 14. An L-shaped core-pulling arm 16 is hinged to one end of the connecting rod 15. The upper part of the L-shaped core-pulling arm 16 is hinged to the connecting component.

[0025] In the above scheme, cylinder 13 is electrically controlled. When cylinder 13 is activated, output rod 14 pushes connecting rod 15 to move. When connecting rod 15 moves back and forth, it drives L-shaped core-pulling arm 16 to move. L-shaped core-pulling arm 16 is hinged to connecting assembly, so the translation direction of output rod 14 is converted into the angle change of L-shaped core-pulling arm 16. A mold 17 is detachably installed on one side of L-shaped core-pulling arm 16, and a core-pulling head 18 is provided on mold 17. The detachable mold 17 allows for easy removal and replacement of different molds. The angle change of L-shaped core-pulling arm 16 is achieved by pulling it out from the product side hole through core-pulling head 18, facilitating subsequent demolding. This product completes core pulling through the angle change of L-shaped core-pulling arm 16, which is suitable for arc-shaped product side holes. The overall structure is compact and the working efficiency is high.

[0026] refer to Figures 1-5 The connecting assembly includes a connecting block 20 and a top block 21. The top block 21 is installed below the top plate 12. A branch arm 22 is symmetrically provided at one end of the top block 21. An embedded block 23 is installed inside the branch arm 22. A countersunk hole 24 is provided on the surface of the branch arm 22. The countersunk hole 24 passes through the embedded block 23. A connecting block 20 is installed at one end of the top block 21 away from the branch arm 22. A shaft core 27 is installed inside the embedded block 23. An L-shaped core-pulling arm 16 is installed between the connecting block 20 and the embedded block 23. The L-shaped core-pulling arm 16 is rotatably connected to the shaft core 27.

[0027] In the above scheme, for the installation of the L-shaped core-pulling arm 16, a threaded hole is opened at the top position of the top block 21 corresponding to the bottom of the connecting block 20, and the connecting block 20 is fixed by connecting bolts in the threaded hole; then the inner block 23 is aligned and attached to one side of the branch arm 22, and the inner block 23 is fixed by installing bolts in the countersunk hole 24; then the upper part of the L-shaped core-pulling arm 16 is inserted between the connecting block 20 and the inner block 23, and the shaft core 27 is inserted into the inner block 23. The shaft core 27 passes through the upper part of the L-shaped core-pulling arm 16 to complete the rotational connection.

[0028] Further reference Figure 5 The branch arm 22 has a cutout 25 on its surface, and a stabilizing block 26 is installed inside the cutout 25. Bolts 28 are installed on the surface of the stabilizing block 26.

[0029] In a further embodiment, a stabilizing block 26 is inserted into the notch 25. The stabilizing block 26 is used to prevent the shaft core 27 from detaching from the inner block 23. A bolt 28 is then installed inside the stabilizing block 26 and fixed inside the shaft core 27. When it is necessary to replace the L-shaped core-pulling arm 16, simply remove the bolt 28 from the stabilizing block 26, take out the shaft core 27, and simultaneously disconnect the hinge connection between the connecting rod 15 and the L-shaped core-pulling arm 16 to disassemble and remove the L-shaped core-pulling arm 16.

[0030] Note that the L-shaped core-pulling arm 16, mold 17, and connecting rod 15 are variable structures. Different L-shaped core-pulling arms 16 and molds 17 can be replaced according to actual usage needs. The variable of the L-shaped core-pulling arm 16 is reflected in the L-shaped arms at both ends; the variable of the mold 17 is reflected in the shape of the core-pulling head 18. The variable of the connecting rod 15 is its own length.

[0031] Further reference Figure 5 One end of the shaft core 27 is provided with a key shaft 36. The key shaft 36 is used to stabilize the position of the shaft core 27 and prevent it from rotating within the inner block 23. The inner block 23 is provided with a keyway for cooperating with the key shaft 36.

[0032] Example 2 (in conjunction with Example 1):

[0033] refer to Figures 1-3An adjusting mechanism is installed on the surface of the top plate 12, and the adjusting mechanism is connected to the connecting assembly. The adjusting mechanism includes a motor 35, the output end of which is connected to a threaded rod 34. A threaded shaft block 32 that meshes with the threaded rod 34 is installed on one side of the connecting block 20. Slider blocks 30 are symmetrically arranged on both sides of the threaded shaft block 32. A fixing block 31 is installed on the inner side of the side plate 11. Slide rods 33 are installed on both sides of the threaded rod 34. The slide rods 33 are fixed between the top plate 12 and the fixing block 31. The sliders 30 are slidably connected to the slide rods 33.

[0034] In the above scheme, the top block 21 is disconnected from the top plate 12, and instead, it is connected to the threaded rod 34 and the sliding rod 33 via the threaded shaft block 32 and the slider 30 on the connecting block 20. That is, the entire connecting assembly is connected to the distance adjustment mechanism. When it is necessary to replace or disassemble the L-shaped core-pulling arm 16, the threaded rod 34 and the threaded shaft block 32 are engaged by starting the motor 35, which pushes the connecting block 20 to move up and down. As the position of the connecting block 20 changes, the connecting rod 15 deflects accordingly. The linkage cylinder 13 is activated according to the adjustment distance to adjust the position of the output rod 14. The connecting block 20 moves downward, which makes it convenient for workers to disassemble and install the L-shaped core-pulling arm 16 from below.

[0035] Example 3 (in conjunction with Example 2):

[0036] refer to Figures 1-5 The displacement of the entire connecting assembly is controlled by motor 35. When changing different molds 17, L-shaped core-pulling arm 16 or connecting rod 15, the vertical height of the connecting assembly can be adjusted slightly to adapt to different types of molds 17 and change the stroke angle.

[0037] The specific implementation process of this utility model is as follows:

[0038] For the installation of the L-shaped core-pulling arm 16, a threaded hole is made at the top of the top block 21 corresponding to the bottom of the connecting block 20. A bolt is used to fix the connecting block 20 in the threaded hole. Then, the inner block 23 is aligned and fitted against one side of the branch arm 22. A bolt is installed inside the countersunk hole 24 to fix the inner block 23. Next, the upper part of the L-shaped core-pulling arm 16 is inserted between the connecting block 20 and the inner block 23. The shaft core 27 is inserted inside the inner block 23. The shaft core 27 passes through the upper part of the L-shaped core-pulling arm 16 to complete the rotational connection. The stabilizing block 26 is inserted into the cut 25. The stabilizing block 26 is used to prevent the shaft core 27 from detaching from the inner block 23. The bolt 28 is then installed in the stabilizing block 26 and fixed inside the shaft core 27.

[0039] When cylinder 13 is started, output rod 14 pushes connecting rod 15 to move. When connecting rod 15 moves back and forth, it will drive L-shaped core-pulling arm 16 to move. Shaft core 27 passes through the top of L-shaped core-pulling arm 16 to complete the rotational connection. Therefore, the translational direction of output rod 14 is converted into the angle change of L-shaped core-pulling arm 16.

[0040] When it is necessary to replace or disassemble the L-shaped core-pulling arm 16, the motor 35 is started, and the threaded rod 34 and the threaded shaft block 32 mesh with each other to push the connecting block 20 to move up and down. When the position of the connecting block 20 changes, the connecting rod 15 follows and deflects at an angle. According to the adjustment distance, the linkage cylinder 13 needs to be started to adjust the position of the output rod 14. The connecting block 20 moves downward, which makes it convenient for the staff to disassemble and install the L-shaped core-pulling arm 16 from below.

[0041] The above embodiments are merely exemplary models of this utility model and are not intended to limit this utility model. The scope of protection of this utility model is defined by the claims. Various modifications or equivalent substitutions can be made to this utility model within its substance and scope of protection. Such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this utility model.

[0042] In the description of this utility model, it should be noted that the terms "inner," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the attached circle, or the orientation or positional relationship commonly used when the utility model product is in use. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, these terms indicating orientation or positional relationship should not be construed as limitations on this utility model.

[0043] In the description of this utility model, it should be further noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, these terms can refer to a fixed connection, a detachable connection, or an integral connection between components; they can also refer to a mechanical connection or an electrical connection; or they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

Claims

1. An ejector core mold characterized by: Including the bottom plate (10), one side of the bottom plate (10) is provided with a side plate (11), the top of the side plate (11) is provided with a top plate (12), and the connecting assembly is installed below the top plate (12); The surface of the bottom plate (10) is provided with a cylinder (13), the output end of the cylinder (13) is connected with an output rod (14), one end of the output rod (14) is hingedly connected with a connecting rod (15), one end of the connecting rod (15) is hingedly connected with an L-shaped core-pulling arm (16), and the L-shaped core-pulling arm (16) is hingedly connected with the connecting assembly above; The surface of the top plate (12) is provided with a distance adjusting mechanism connected with the connecting assembly.

2. A push-out core mold according to claim 1, wherein: The connecting assembly comprises a connecting block (20) and a top block (21), the top block (21) is installed below the top plate (12), one end of the top block (21) is symmetrically provided with a branch arm (22), the inner side of the branch arm (22) is provided with an embedded block (23), the surface of the branch arm (22) is provided with a counterbore (24) penetrating through the embedded block (23), one end of the top block (21) is provided with the connecting block (20) away from the branch arm (22), the embedded block (23) is provided with a shaft core (27), and the L-shaped core-pulling arm (16) is installed between the connecting block (20) and the embedded block (23) and is rotationally connected with the shaft core (27).

3. A push-out core mold according to claim 2, wherein: The surface of the branch arm (22) is provided with a cutout (25), the cutout (25) is fitted with a stabilizing block (26), and the surface of the stabilizing block (26) is provided with a bolt (28).

4. A push-out core mold according to claim 2, wherein: The distance adjusting mechanism comprises a motor (35), the output end of the motor (35) is connected with a threaded rod (34), one side of the connecting block (20) is provided with a threaded shaft block (32) meshing with the threaded rod (34), the threaded shaft block (32) is symmetrically provided with a sliding block (30) on both sides, the inner side of the side plate (11) is provided with a fixed block (31), the threaded rod (34) is provided with a sliding rod (33) on both sides, the sliding rod (33) is fixed between the top plate (12) and the fixed block (31), and the sliding block (30) is in sliding connection with the sliding rod (33).

5. A push-out core mold according to claim 2, wherein: One end of the shaft core (27) is provided with a key shaft (36).

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