Horseshoe block swing limiting demolding structure

Abstract

The utility model provides a horseshoe block swing limit demolding structure, which comprises a horseshoe block and a mold core which are positioned in a cavity, the end part of the horseshoe block is used for abutting against the outer wall of the mold core, the horseshoe block swing limit demolding structure also comprises a limit sleeve and a draw rod which are connected to a mold in a sliding manner, and the draw rod is positioned in the limit sleeve. A positioning plane is arranged at the end, away from the mold core, of the horseshoe block, the end of the limiting sleeve is used for abutting against the positioning plane, and the drawing rod moves in the direction away from the mold core in the axial direction of the drawing rod and enables the horseshoe block to turn over along the inner wall of a product through the conduction assembly, and the horseshoe block is drawn out of the product after translation. And the demoulding of the horseshoe blocks is realized in a simple, efficient and economical manner.

Description

Technical Field

[0001] This utility model relates to the field of molds, and in particular, to a horseshoe block swing limiting demolding structure. Background Technology

[0002] When injection molding products with complex undercut structures, such as... Figure 1 The tubular product 1 shown has a locking structure at its end, making demolding a technical challenge. Figure 2 A typical mold structure is shown, in which the core 3 and the horseshoe block 4 are both located in the cavity 26 of the mold 2. The core 3 is used to form the main tube part of the product 1, while the undercut structure of the side wall of the tubular product 1 is formed by a separate horseshoe block 4.

[0003] To demold this horseshoe-shaped block, current technology relies on mounting it on a cylinder. However, due to the undercut structure, the horseshoe block cannot be easily and directly pulled out in a straight line along the radial direction of the core. Therefore, how to improve the demolding mechanism to achieve demolding of this type of undercut structure in a simple, efficient, and economical way is a key problem that urgently needs to be solved in current injection mold technology. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a horseshoe block swing limiting demolding structure to achieve horseshoe block demolding in a simple, efficient and economical way.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a horseshoe block swing limiting demolding structure, including a horseshoe block and a core located in the cavity, the end of the horseshoe block being used to abut against the outer wall of the core, and a limiting sleeve and a pull rod slidably connected to the mold, the pull rod being located inside the limiting sleeve, a positioning plane being provided at the end of the horseshoe block away from the core, the end of the limiting sleeve being used to abut against the positioning plane, the pull rod moving along its own axis in a direction away from the core, and through a transmission component causing the horseshoe block to flip and translate along the inner wall of the product before being pulled out from the product.

[0006] To achieve the above technical solution, during the demolding process, firstly, the limiting sleeve moves axially to translate, retracting from its working position where it abuts against the positioning plane of the horseshoe block. Subsequently, the pull rod moves axially away from the core. Through the transmission component, the horseshoe block performs a combined motion trajectory of flipping and translation along the inner wall of the product. This step-by-step demolding process, with the limiting sleeve moving first and the horseshoe block then moving along a precise trajectory, allows the horseshoe block to be smoothly and without interference completely extracted from the undercut position on the inner wall of the product, achieving the goal of demolding the horseshoe block in a simpler, more efficient, and economical way.

[0007] In a preferred embodiment of this utility model, the conductive component includes a protrusion, a placement groove, a connecting rod, a connecting block, an inclined groove, and a rotating shaft. The protrusion is fixed on a positioning plane, the placement groove is formed on the protrusion, the two ends of the connecting rod are fixedly connected to a pull rod and a connecting block, respectively, the inclined groove is formed on the connecting block, the rotating shaft and the connecting block are placed in the placement groove, the rotating shaft is slidably connected in the inclined groove, and a limiting component is provided between the pull rod and the protrusion to limit the rotation angle of the protrusion.

[0008] To achieve the above technical solution, at the beginning of demolding, the limiting sleeve first completes its translational retraction, freeing up space. Immediately afterwards, the pull rod moves along its own axis, driving the connecting block to move synchronously via the connecting rod. The rotating shaft slides in the inclined groove of the connecting block and is rotatably connected to the inclined groove. The linear motion of the pull rod, through the linkage of the connecting rod, connecting block, and rotating shaft in the inclined groove, forces the horseshoe block to perform a precise combination of flipping and translational motion along the inner wall of the product. The limiting component restricts the rotation angle of the horseshoe block, ensuring that the horseshoe block is smoothly extracted from the inner wall of the product.

[0009] As a preferred embodiment of this utility model, the limiting component includes a limiting inclined surface, a pressing plane, and a supporting plane. The limiting inclined surface and the pressing plane are both located at the end of the pull rod. The limiting inclined surface is adjacent to the pressing plane. The supporting plane is located at the end of the protrusion away from the horseshoe block. The supporting plane is used to press against the pressing plane or the limiting inclined surface.

[0010] To achieve the above technical solution, during the demolding process of the horseshoe block, the supporting plane of the protrusion contacts the limiting inclined surface of the pull rod end. This mechanical contact acts as a rigid stop, effectively limiting the rotation angle range of the horseshoe block. This ensures that the horseshoe block avoids excessive rotation during demolding oscillation, guaranteeing the stability and reliability of the demolding process. During the injection molding stage, the clamping plane and the supporting plane on the protrusion are tightly abutted, jointly bearing the pressure generated on the horseshoe block during the injection molding process, providing solid support and preventing displacement and deformation.

[0011] As a preferred embodiment of this utility model, an installation groove is provided on the inner wall of the placement groove, and a wear-resistant block is fixedly connected to the inner wall of the installation groove. The surface of the wear-resistant block is used to fit against the surface of the connecting block, and the rotating shaft passes through the wear-resistant block.

[0012] The above technical solution provides highly wear-resistant working surfaces in the areas where the inner wall of the placement groove slides in contact with the connecting block and where the rotating shaft passes through, significantly reducing friction and wear during operation. This ensures the long-term smoothness and precision of the transmission component's movement, thereby improving the overall durability and reliability of the mold.

[0013] As a preferred embodiment of this utility model, a guide slope is provided on the outer wall of the protrusion, and the end of the limiting sleeve abuts against the positioning plane along the guide slope.

[0014] To achieve the above technical solution, when the limiting sleeve moves towards the core, its end first slides along the guide slope of the protrusion for initial guidance. Then, the end of the limiting sleeve abuts against the positioning plane on the protrusion. This abutting action generates a force that compels the protrusion to rotate the horseshoe block, forcing it into position. This rotation ensures the horseshoe block abuts against the outer wall of the core, eliminating gaps and placing it in the correct molding position, laying the foundation for subsequent injection and demolding.

[0015] As a preferred embodiment of this utility model, a non-contact plane is provided on the guide slope.

[0016] The above technical solution reduces the friction between the limiting sleeve and the limiting sleeve, making the movement of the limiting sleeve smoother.

[0017] As a preferred embodiment of the present invention, the horseshoe block includes a main body and an arc-shaped groove. The arc-shaped groove is provided at one end of the main body, and the protrusion is fixed at the other end of the main body. The inner wall of the arc-shaped groove abuts against the outer wall of the core.

[0018] To achieve the above technical solution, the inner wall of the arc-shaped groove is used to press against the outer wall of the core, which not only forms a specific structure on the product, but also provides important support and sealing. Attached Figure Description

[0019] Figure 1 This is a structural diagram of the product;

[0020] Figure 2 A schematic diagram of the existing mold structure;

[0021] Figure 3 The schematic diagram is for illustrating the structure of this utility model;

[0022] Figure 4 This is a schematic diagram illustrating the connection structure between the slider and the horseshoe block;

[0023] Figure 5 To illustrate the structure of the horseshoe block;

[0024] Figure 6 To illustrate the structural diagram of the conductive component;

[0025] Figure 7 To illustrate the structural diagram of the friction block;

[0026] Figure 8 To illustrate the structural diagram of the placement slot;

[0027] Figure 9 To illustrate the connection structure between the pull rod and the horseshoe block;

[0028] Figure 10To illustrate the structure of the rotating shaft;

[0029] Figure 11 This is a schematic diagram of the cross-section of a horseshoe block.

[0030] Reference numerals: 1. Product; 2. Mold; 3. Core; 4. Horseshoe block; 5. Main body; 6. Arc-shaped groove; 7. Limiting sleeve; 8. Pull rod; 9. Positioning plane; 10. Conducting component; 11. Protrusion; 12. Placement groove; 13. Connecting rod; 14. Connecting block; 15. Inclined groove; 16. Rotating shaft; 17. Guide inclined surface; 18. Non-contact plane; 19. Limiting component; 20. Limiting inclined surface; 21. Clamping plane; 22. Supporting plane; 23. Mounting groove; 24. Wear-resistant block; 25. Round hole; 26. Cavity. Detailed Implementation

[0031] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so that the technical solution of this utility model can be more easily understood and mastered.

[0032] A horseshoe block swing-limiting demolding structure includes a horseshoe block 4 and a core 3 located within a cavity 26. The horseshoe block 4 includes a main body 5 and an arc-shaped groove 6. The arc-shaped groove 6 is formed at one end of the main body 5, and the inner wall of the arc-shaped groove 6 abuts against the outer wall of the core 3.

[0033] Both the limiting sleeve 7 and the pull rod 8 are slidably connected to the mold 2, with the pull rod 8 located inside the limiting sleeve 7. A positioning plane 9 is provided at the end of the horseshoe block 4 away from the core 3, and the end of the limiting sleeve 7 is used to abut against the positioning plane 9. The limiting sleeve 7 moves along its own axis and separates from the positioning plane 9 on the horseshoe block 4. Then, the pull rod 8 moves along its own axis away from the core 3, causing the horseshoe block 4 to flip and translate along the inner wall of the product 1 and be pulled out of the product 1 through the transmission component 10.

[0034] The conductive assembly 10 includes a protrusion 11, a placement groove 12, a connecting rod 13, a connecting block 14, a sloping groove 15, and a rotating shaft 16. The protrusion 11, which is frustoconical, is fixed to the positioning plane 9. A guide slope 17 is formed on the outer wall of the protrusion 11, and the guide slope 17 is coaxially arranged with the protrusion 11. The end of the limiting sleeve 7 abuts against the positioning plane 9 along the guide slope 17.

[0035] A non-contact plane 18 is provided on the guide slope 17.

[0036] A placement groove 12 is formed on the protrusion 11, and the cross-section of the placement groove 12 is trapezoidal. The two ends of the connecting rod 13 are fixedly connected to the pull rod 8 and the connecting block 14, respectively. The length direction of the connecting rod 13 is parallel to the axial direction of the pull rod 8. A slanted groove 15 is formed on the connecting block 14. The rotating shaft 16 and the connecting block 14 are placed in the placement groove 12, and the rotating shaft 16 is fixed within the placement groove 12. The rotating shaft 16 passes through the slanted groove 15, allowing it to slide and rotate within the slanted groove 15. A limiting component 19 is provided between the pull rod 8 and the protrusion 11 to limit the rotation angle of the protrusion 11.

[0037] The limiting component 19 includes a limiting inclined surface 20, a clamping surface 21, and a supporting surface 22. Both the limiting inclined surface 20 and the clamping surface 21 are located at the end of the pull rod 8, with the limiting inclined surface adjacent to the clamping surface 21. The supporting surface 22 is located at the end of the protrusion 11 away from the horseshoe block 4, and is used to clamp against the clamping surface 21 or the limiting inclined surface.

[0038] An installation groove 23 is formed on the inner wall of the placement groove 12. A wear-resistant block 24 is fixedly connected to the inner wall of the installation groove 23, and the surface of the wear-resistant block 24 is designed to fit against the surface of the connecting block 14. A circular hole 25 is formed on the wear-resistant block 24, and the rotating shaft 16 is rotatably connected to the circular hole 25. The wear-resistant block 24 is made of aluminum bronze.

[0039] After product 1 cools and solidifies, mold 2 opens and enters the demolding stage. First, the limiting sleeve 7 moves backward along its own axis, separating from the positioning plane 9, completing the first step of removal. Subsequently, the pull rod 8 moves away from the core 3 along its own axis, and its linear motion drives the horseshoe block 4 to move through the transmission assembly 10, which consists of connecting rod 13, connecting block 14, inclined groove 15, and rotating shaft 16. The rotating shaft 16 slides and rotates in the inclined groove 15, forcing the horseshoe block 4 to perform a precise combination of flipping and translation. The limiting assembly 19 controls the rotation angle range of the horseshoe block 4 during this process. The horseshoe block 4 is smoothly extracted from product 1 along this specific trajectory controlled by the transmission assembly 10.

[0040] Of course, the above are just typical examples of this utility model. In addition, this utility model may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by this utility model.

Claims

1. A horseshoe block swing-limiting demolding structure, comprising a horseshoe block (4) and a core (3) located in a cavity (26), wherein the end of the horseshoe block (4) is used to abut against the outer wall of the core (3), characterized in that: It also includes a limiting sleeve (7) and a pull rod (8) that are slidably connected to the mold (2). The pull rod (8) is located inside the limiting sleeve (7). The horseshoe block (4) is provided with a positioning plane (9) at the end away from the core (3). The end of the limiting sleeve (7) is used to abut against the positioning plane (9). The pull rod (8) moves along its own axis away from the core (3) and through the transmission component (10), the horseshoe block (4) is flipped and translated along the inner wall of the product (1) and then pulled out from the product (1).

2. The horseshoe block swing limiting demolding structure according to claim 1, characterized in that: The conductive assembly (10) includes a protrusion (11), a placement groove (12), a connecting rod (13), a connecting block (14), a slanted groove (15), and a rotating shaft (16). The protrusion (11) is fixed on the positioning plane (9). The placement groove (12) is opened on the protrusion (11). The two ends of the connecting rod (13) are fixedly connected to the pull rod (8) and the connecting block (14) respectively. The slanted groove (15) is opened on the connecting block (14). The rotating shaft (16) and the connecting block (14) are placed in the placement groove (12). The rotating shaft (16) is slidably connected in the slanted groove (15). A limiting assembly (19) is provided between the pull rod (8) and the protrusion (11) to limit the rotation angle of the protrusion (11).

3. The horseshoe block swing limiting demolding structure according to claim 2, characterized in that: The limiting component (19) includes a limiting inclined surface (20), a pressing plane (21), and a supporting plane (22). The limiting inclined surface (20) and the pressing plane (21) are both located at the end of the pull rod (8). The limiting inclined surface (20) is adjacent to the pressing plane (21). The supporting plane (22) is located at the end of the protrusion (11) away from the horseshoe block (4). The supporting plane (22) is used to press against the pressing plane (21) or the limiting inclined surface (20).

4. A horseshoe block swing-limiting demolding structure according to claim 2 or 3, characterized in that: The inner wall of the placement groove (12) is provided with an installation groove (23), and a wear-resistant block (24) is fixedly connected to the inner wall of the installation groove (23). The surface of the wear-resistant block (24) is used to fit with the surface of the connecting block (14), and the rotating shaft (16) passes through the wear-resistant block (24).

5. The horseshoe block swing limiting demolding structure according to claim 2, characterized in that: The outer wall of the protrusion (11) is provided with a guide slope (17), and the end of the limiting sleeve (7) is along the guide slope (17) and abuts against the positioning plane (9).

6. The horseshoe block swing limiting demolding structure according to claim 5, characterized in that: A non-contact plane (18) is provided on the guide slope (17).

7. The horseshoe block swing limiting demolding structure according to claim 2, characterized in that: The horseshoe block (4) includes a main body (5) and an arc-shaped groove (6). The arc-shaped groove (6) is provided at one end of the main body (5), and the protrusion (11) is fixed at the other end of the main body (5). The inner wall of the arc-shaped groove (6) abuts against the outer wall of the core (3).

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