Square elbow injection mold

Abstract

The utility model discloses a square elbow injection mold which comprises a base and a supporting seat, a bottom mold body is fixed on the supporting seat, a top mold seat is arranged on the top surface of the bottom mold body, a top mold body is fixed on the bottom surface of the top mold seat, four right-angle mold cavities are arranged between the bottom mold body and the top mold body, and four core pulling seats are arranged on the supporting seat; two mandrels are arranged on the core-pulling seats, external threads are arranged on the outer walls of the middles of the mandrels, the mandrels of the adjacent core-pulling seats are spliced to form a right-angle mold core, and core-pulling driving structures connected with the mandrels are arranged in the core-pulling seats; a limiting pin rod is arranged on the core pulling seat, and a wedge-shaped block is fixed at the top end of the limiting pin rod; a limiting groove hole is formed in the supporting base, and the wedge-shaped block abuts against the core-pulling base so that the core-pulling base can be positioned. The core-pulling device is reasonable in structural arrangement, discharging operation of the square elbow is facilitated, machining efficiency and machining quality are improved, the limiting pin rod is matched with the wedge-shaped block, installation stability and reliability of the core-pulling base can be guaranteed, and effectiveness of core pulling is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of mold processing technology, specifically relating to a right-angle elbow injection mold. Background Technology

[0002] Plastic right-angle elbows are a common connection structure. Some plastic right-angle elbows have internal threads on the inner walls of both ends. During processing, corresponding molds are required. Existing molds are not conducive to demolding and handling of finished products after processing. Not only is the operation very cumbersome, but it is also easy to damage the plastic right-angle elbow, affecting the quality of the processed products and limiting its applicability. Utility Model Content

[0003] The purpose of this invention is to provide a right-angle elbow injection mold with a reasonable structural design that is conducive to improving demolding efficiency.

[0004] The technical solution to achieve the purpose of this utility model is a right-angle elbow injection mold, including a base, a support seat fixed on the base, a bottom mold body fixed on the support seat, a top mold seat provided on the top surface of the bottom mold body, a top mold body fixed on the bottom surface of the top mold seat, four right-angle mold cavities provided between the bottom mold body and the top mold body, and four core-pulling seats provided on the support seat.

[0005] The core-pulling seat is provided with two mandrels, and the outer wall of the middle part of the mandrel is provided with external threads. The mandrels of adjacent core-pulling seats are spliced ​​together to form a right-angle mold core. The core-pulling seat is provided with a core-pulling drive structure connected to the mandrel.

[0006] The core-pulling seat is provided with a limit pin, and a wedge-shaped block is fixed to the top of the limit pin;

[0007] The support base is provided with a limiting slot, the limiting pin passes through the core-pulling seat and extends into the limiting slot, and the wedge block presses against the core-pulling seat to position the core-pulling seat.

[0008] A further preferred embodiment is that the core-pulling drive structure includes a drive motor, a drive gear fixed on the main shaft of the drive motor, and a transmission gear meshing with the drive gear fixed on the core shaft;

[0009] The two transmission gears are arranged side by side, and the drive gear is located on the perpendicular bisector of the line connecting the axes of the two transmission gears.

[0010] The drive motor drives the transmission gear to rotate through the drive gear, and when moving outward, it causes the mandrel to rotate and disengage from the finished right-angle bend.

[0011] A further preferred embodiment is that the bottom mold body is provided with injection flow channels that communicate with the four right-angle mold cavities.

[0012] A further preferred embodiment is that the sides of the support base, top mold base, and base are fixed with several disassembly and assembly operation handles by screws.

[0013] A further preferred embodiment is that: a guide post is provided on the bottom mold body, and a guide hole is provided on the top mold body to cooperate with the guide post;

[0014] The top mold body is mounted on the bottom mold body, and the guide post is inserted into the guide hole for guidance and limitation.

[0015] This utility model has positive effects: its structure is reasonably designed, featuring a core-pulling seat and a core-pulling drive structure. During use, the core shaft rotates via the core-pulling drive structure, disengaging from the internal thread of the right-angle bend to achieve core pulling, facilitating the unloading operation of the right-angle bend, improving processing efficiency and quality. Furthermore, the use of a limiting pin and wedge block ensures the stability and reliability of the core-pulling seat during installation. When unloading the core, removing the limiting pin allows for the translation of the core-pulling seat, ensuring the effectiveness of core pulling and making it highly applicable. Attached Figure Description

[0016] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the top mold base and the top mold body when disassembled in this utility model;

[0019] Figure 3 for Figure 2 Another perspective on the structure diagram;

[0020] Figure 4 for Figure 2 Enlarged structural diagram at point A in the middle.

[0021] Reference numerals: 1. Base; 2. Support base; 3. Bottom mold body; 4. Top mold base; 5. Top mold body; 6. Right-angle mold cavity; 7. Core-pulling seat; 8. Mandrel; 9. External thread; 10. Core-pulling drive structure; 10. Drive motor; 101. Drive gear; 102. Transmission gear; 103. Limiting pin; 11. Wedge block; 12. Limiting slot; 13. Injection guide channel; 14. Disassembly and assembly operation handle; 15. Guide post; 16. Guide hole; 17. Right-angle elbow; 18. Detailed Implementation

[0022] 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.

[0023] Example

[0024] See Figures 1 to 4 As shown, a right-angle elbow injection mold includes a base 1, a support seat 2 fixed on the base, a bottom mold body 3 fixed on the support seat, a top mold seat 4 provided on the top surface of the bottom mold body, a top mold body 5 fixed on the bottom surface of the top mold seat, four right-angle mold cavities 6 provided between the bottom mold body and the top mold body, and four core-pulling seats 7 provided on the support seat. In this embodiment, the base, support seat, and top mold seat are all conventional structures of the prior art, and are simply applied. The core-pulling seats are mainly used to realize core pulling and translation operations, thereby ensuring the effectiveness and reliability of the internal threads on the inner wall of the right-angle elbow 18.

[0025] In this embodiment, the core-pulling seat is provided with two mandrels 8, and the outer wall of the middle part of the mandrel is provided with an external thread 9. The mandrels of adjacent core-pulling seats are spliced ​​together to form a right-angle mold core. The core-pulling seat is provided with a core-pulling drive structure 10 connected to the mandrel. In this embodiment, the adjacent mandrels are spliced ​​together to form a right-angle mold core and extend into the right-angle mold cavity. Thus, the injection molding of the right-angle bend can be completed in the right-angle mold cavity with the right-angle mold core. The core-pulling drive structure is used to realize the core-pulling, which facilitates the handling of the right-angle bend.

[0026] Furthermore, the core-pulling seat is equipped with a limiting pin 11, and a wedge block 12 is fixed to the top of the limiting pin. Simultaneously, the support base is equipped with a limiting slot 13. During assembly, the limiting pin passes through the core-pulling seat and extends into the limiting slot, while the wedge block presses against the core-pulling seat to position it. The pressure of the wedge block ensures seamless contact at the joints of adjacent mandrels, thereby guaranteeing the machining accuracy of the right-angle bend. Moreover, the limiting pin also improves the ease of disassembly and assembly of the wedge block and enhances the stability and reliability of installation, which is beneficial for improving the efficiency of subsequent processing operations.

[0027] In this embodiment, the core-pulling drive structure includes a drive motor 101, a drive gear 102 fixed on the main shaft of the drive motor, and a transmission gear 103 fixed on the core shaft that meshes with the drive gear. During assembly, the two transmission gears are arranged side by side, and the drive gear is located on the perpendicular bisector of the line connecting the axes of the two transmission gears. The drive motor drives the drive gear to rotate the core shaft and disengage the external thread from the internal thread of the right-angle bend, ensuring the quality of the right-angle bend. During use, the drive motor drives the transmission gear to rotate through the drive gear, and the core shaft rotates and disengages from the finished right-angle bend when it moves outward.

[0028] In practical applications, to improve the effectiveness of injection molding, the bottom mold body is provided with injection guide channels 14 that communicate with the four right-angle mold cavities. This ensures that the injection material enters the right-angle mold cavities and completes the injection molding process.

[0029] Furthermore, in this embodiment, the sides of the support base, top mold base, and base are fixed with several disassembly and assembly operation handles 15 by screws. This facilitates subsequent operations and mold opening.

[0030] To ensure the accuracy of the connection between the top mold body and the bottom mold body, a guide post 16 is provided on the bottom mold body, and a guide hole 17 is provided on the top mold body to cooperate with the guide post. During assembly, the top mold body is placed on the bottom mold body, and the guide post is inserted into the guide hole for guidance and limitation. This prevents the bottom mold body and the top mold body from shifting or misaligning, improving the stability and reliability of use.

[0031] This utility model has positive effects: its structure is reasonably designed, featuring a core-pulling seat and a core-pulling drive structure. During use, the core shaft rotates via the core-pulling drive structure, disengaging from the internal thread of the right-angle bend to achieve core pulling, facilitating the unloading operation of the right-angle bend, improving processing efficiency and quality. Furthermore, the use of a limiting pin and wedge block ensures the stability and reliability of the core-pulling seat during installation. When unloading the core, removing the limiting pin allows for the translation of the core-pulling seat, ensuring the effectiveness of core pulling and making it highly applicable.

[0032] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural parts described in the instruction manual can also be processed without any doubt based on existing technical common sense. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.

[0033] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, these obvious variations or modifications derived from the essential spirit of this utility model still fall within the protection scope of this utility model.

Claims

1. A right-angle elbow injection mold, comprising a base, a support fixed on the base, a bottom mold body fixed on the support, a top mold seat disposed on the top surface of the bottom mold body, a top mold body fixed on the bottom surface of the top mold seat, and four right-angle mold cavities disposed between the bottom mold body and the top mold body, characterized in that: The support base is provided with four core-pulling seats; The core-pulling seat is provided with two mandrels, and the outer wall of the middle part of the mandrel is provided with external threads. The mandrels of adjacent core-pulling seats are spliced ​​together to form a right-angle mold core. The core-pulling seat is provided with a core-pulling drive structure connected to the mandrel. The core-pulling seat is provided with a limit pin, and a wedge-shaped block is fixed to the top of the limit pin; The support base is provided with a limiting slot, the limiting pin passes through the core-pulling seat and extends into the limiting slot, and the wedge block presses against the core-pulling seat to position the core-pulling seat.

2. The injection mold for a right-angle elbow according to claim 1, characterized in that: The core-pulling drive structure includes a drive motor, a drive gear fixed on the main shaft of the drive motor, and a transmission gear meshing with the drive gear fixed on the core shaft. The two transmission gears are arranged side by side, and the drive gear is located on the perpendicular bisector of the line connecting the axes of the two transmission gears. The drive motor drives the transmission gear to rotate through the drive gear, and when moving outward, it causes the mandrel to rotate and disengage from the finished right-angle bend.

3. The injection mold for a right-angle elbow according to claim 2, characterized in that: The bottom mold body is provided with injection flow channels that communicate with the four right-angle mold cavities.

4. The injection mold for a right-angle elbow according to claim 1, characterized in that: The sides of the support base, top mold base, and base are fixed with several disassembly and assembly operation handles by screws.

5. The injection mold for a right-angle elbow according to claim 1, characterized in that: The bottom mold body is provided with guide posts, and the top mold body is provided with guide holes that cooperate with the guide posts; The top mold body is mounted on the bottom mold body, and the guide post is inserted into the guide hole for guidance and limitation.

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