Water tank product mold with external thread core-pulling mechanism

Abstract

The utility model relates to the technical field of dies, and particularly discloses a water tank product die with an external thread core-pulling mechanism. The mold comprises a front mold assembly, a rear mold assembly, a central core-pulling assembly arranged on the rear mold assembly and an external thread core-pulling assembly arranged on the central core-pulling assembly, the external thread core-pulling assembly comprises a lower thread core-pulling structure connected with the center core-pulling assembly in a sliding mode and an upper thread core-pulling structure connected with the front mold assembly. The thread forming device is low in thread forming cost, small in occupied space and good in forming effect.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a water tank product mold with an external thread core-pulling mechanism. Background Technology

[0002] A mold is a tool used for molding and processing. It transforms raw materials into desired parts or products through specific shapes and structures, and is widely used in industrial production to improve production efficiency and product quality. In the modern water tank manufacturing field, injection molds are widely used in the production of various products. Water tank products often have connecting pipes on their sides, with external threads on the outside for connection to external components. However, the protruding direction of the connecting pipe is not consistent with the mold opening direction. To achieve the desired forming of the connecting pipe, core-pulling processing is required for the hollow part and the externally threaded part of the pipe. Furthermore, there are other core-pulling structures on both sides of the structure, which can easily cause interference. A common method for demolding external threads is to use a motor in conjunction with gears for synchronous thread removal, but this method results in higher mold costs and occupies more space. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a water tank product mold with an external thread core-pulling mechanism. This structure has low thread forming cost, small space occupation, and good forming effect.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A water tank product mold with an external thread core-pulling mechanism includes: a front mold assembly, a rear mold assembly, a central core-pulling assembly disposed on the rear mold assembly, and an external thread core-pulling assembly disposed on the central core-pulling assembly. The external thread core-pulling assembly includes a lower thread core-pulling structure slidably connected to the central core-pulling assembly and an upper thread core-pulling structure connected to the front mold assembly. The central core-pulling assembly is used to form a hollow portion of a pipe, the upper thread core-pulling structure is used to form the upper half of the external thread, and the lower thread core-pulling structure is used to form the lower half of the external thread. The upper thread core-pulling structure and the lower thread core-pulling structure are pulled together when the mold is opened.

[0006] According to some embodiments of the present invention, the center core-pulling assembly includes a first slider seat, a center forming part disposed on the first slider seat, and a driving structure for driving the first slider seat.

[0007] According to some embodiments of the present invention, the lower thread core-pulling structure includes a second slider seat slidably connected to the first slider seat, a lower thread forming part disposed on the first slider seat, and a guide structure for guiding the lower thread forming part.

[0008] According to some embodiments of the present invention, the guide structure includes a first protrusion disposed on the second slider seat and slidably connected to the first slider seat, and the first slider seat has a first sliding groove that cooperates with and slides with the first protrusion.

[0009] According to some embodiments of the present invention, the first protrusion includes a sliding portion protruding from the side wall of the second slider seat, the top surface of the sliding portion and the side surface of the second slider seat forming an angle of less than 90 degrees, and the first slider seat is provided with a guide seat that cooperates with the sliding portion.

[0010] According to some embodiments of the present invention, the guide structure further includes an inclined guide post disposed on the front mold assembly and slidably connected to the second slider seat.

[0011] According to some embodiments of the present invention, the lower thread core-pulling structure includes a first core-pulling part and a second core-pulling part disposed on both sides of the central forming part. The first core-pulling part is used to form the lower left half of the external thread, and the second core-pulling part is used to form the lower right half of the external thread.

[0012] According to some embodiments of the present invention, the upper threaded core-pulling structure includes a molding insert connected to the front mold assembly and an upper threaded molding portion disposed at the bottom of the molding insert, wherein the lower end of the molding insert abuts against the lower threaded core-pulling structure.

[0013] According to some embodiments of the present invention, the molded insert includes a first fixing block and a second fixing block protruding to both sides, and the lower threaded core pulling structure has a first fixing groove and a second fixing groove respectively adapted to the first fixing block and the second fixing block, the first fixing groove and the second fixing groove being used to limit the upper threaded core pulling structure.

[0014] This utility model has at least the following beneficial effects:

[0015] When the mold is opened, the upper threaded core-pulling structure and the lower threaded core-pulling structure can be demolded simultaneously, reducing the number of mold opening steps and eliminating the need for an additional drive structure, thus reducing mold costs. The lower threaded core-pulling structure slides on the central core-pulling assembly to pull the core. After the mold is opened, the lower threaded core-pulling structure moves laterally synchronously with the lateral core-pulling of the central core-pulling assembly, saving mold space and avoiding interference with other structures. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0017] Figure 2 This is a cross-sectional view of one embodiment of the present utility model;

[0018] Figure 3 This is one embodiment of the present utility model. Figure 2 Enlarged view of the area marked A in the middle;

[0019] Figure 4 This is a schematic diagram of the structure of the fixing part according to an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the inclined guide post according to one embodiment of the present invention. Detailed Implementation

[0021] This invention provides the following description with reference to the accompanying drawings to aid in a comprehensive understanding of the various embodiments of the invention as defined by the claims and their equivalents. The description includes various specific details to aid understanding, but these details should be considered exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the invention.

[0022] In the description of this utility model, the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are 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, they should not be construed as limitations on this utility model.

[0023] It should be understood that when one element (e.g., the first element) is “connected” to another element (e.g., the second element), the element may be directly connected to the other element, or there may be an intervening element (e.g., the third element) between the element and the other element.

[0024] An embodiment of this utility model provides a water tank product mold with an external thread core-pulling mechanism, such as... Figure 1-5 As shown, the assembly includes a front mold assembly 101, a rear mold assembly 102, a central core-pulling assembly 201 disposed on the rear mold assembly 102, and an external thread core-pulling assembly 301 disposed on the central core-pulling assembly 201. The external thread core-pulling assembly 301 includes a lower thread core-pulling structure 302 slidably connected to the central core-pulling assembly 201 and an upper thread core-pulling structure 303 connected to the front mold assembly 101. The central core-pulling assembly 201 is used to form the hollow part of the pipe, the upper thread core-pulling structure 303 is used to form the upper half of the external thread, and the lower thread core-pulling structure 302 is used to form the lower half of the external thread. The upper thread core-pulling structure 303 and the lower thread core-pulling structure 302 are pulled together with the mold opening.

[0025] The upper threaded core-pulling structure 303 and the lower threaded core-pulling structure 302 correspond to the upper and lower halves of the external thread, respectively. The central core-pulling assembly 201 is used for core-pulling and demolding of the hollow part inside the pipe. When the mold is opened, the upper threaded core-pulling structure 303 and the lower threaded core-pulling structure 302 can be demolded simultaneously, reducing the number of mold-opening steps. The lower threaded core-pulling structure 302 slides on the central core-pulling assembly 201 for core-pulling. After the mold is opened, the lower threaded core-pulling structure 302 can move laterally synchronously with the lateral core-pulling of the central core-pulling assembly 201, without affecting the subsequent product demolding. Furthermore, the upper threaded core-pulling structure 303 and the lower threaded core-pulling structure 302 can be integrally formed half of the external thread, or, as in this embodiment, the lower threaded core-pulling structure 302 can be further divided into a first core-pulling part 312 and a second core-pulling part 313 to form the lower thread separately, which can save more mold space and avoid interference with other core-pulling structures.

[0026] In some embodiments, such as Figure 1-4 As shown, the center core-pulling assembly 201 includes a first slider seat 202, a center forming part 203 disposed on the first slider seat 202, and a driving structure 204 for driving the first slider seat 202.

[0027] The first slider seat 202 is used to pull the core of the central forming part 203 while providing stable support for the lower thread core pulling structure 302, so that it maintains good positioning during the forming and core pulling process, and can move with the core pulling of the first slider seat 202 without affecting the demolding of the product.

[0028] Furthermore, such as Figure 2-3 As shown, the lower thread core-pulling structure 302 includes a second slider seat 304 slidably connected to the first slider seat 202, a lower thread forming part 305 disposed on the first slider seat 202, and a guide structure 306 for guiding the lower thread forming part 305.

[0029] The second slider seat 304 slides on the first slider seat 202 to pull the core, facilitating the synchronous movement of the lower thread forming part 305 as it moves with the first slider seat 202 after core pulling, thus avoiding interference with subsequent demolding. The lower thread forming part 305 can be pulled downwards or laterally. The guide structure 306 guides the lower thread forming part 305, making the forming and core pulling process more stable and precise, effectively avoiding defects caused by offset or shaking.

[0030] Furthermore, such as Figure 3 As shown, the guide structure 306 includes a first protrusion 307 disposed on the second slider seat 304 and slidably connected to the first slider seat 202, and the first slider seat 202 has a first sliding groove that cooperates with the first protrusion 307 to slide.

[0031] The first sliding groove ensures the precise guidance of the second slider seat 304 during the sliding process, reduces wobbling and offset during the sliding process, and ensures the positional accuracy of the lower thread forming part 305 during the forming and core pulling process, thereby improving the forming quality of the external thread.

[0032] Furthermore, such as Figure 3 As shown, the first protrusion 307 includes a sliding part 309 that protrudes from the side wall of the second slider seat 304. The top surface of the sliding part 309 and the side surface of the second slider seat 304 form an angle of less than 90 degrees. The first slider seat 202 is provided with a guide seat 310 that cooperates with the sliding part 309.

[0033] The sliding part 309 can improve the connection strength between the first protrusion 307 and the second slider seat 304, and also has a guiding function. The top surface of the sliding part 309 and the side surface of the second slider seat 304 form an angle of less than 90 degrees, which greatly improves the connection strength with the guide seat 310, making it less likely for the second slider seat 304 to detach when it moves with the first slider seat 202. The top surface of the sliding part 309 is relative to the first slider seat 202. For example, in this embodiment, the second slider seat 304 is horizontally cored, and the sliding part 309 slides on the first slider seat 202, then its top surface is the top surface.

[0034] Furthermore, such as Figure 5 As shown, the guide structure 306 also includes an inclined guide post 311 disposed on the front mold assembly 101 and slidably connected to the second slider seat 304.

[0035] The inclined guide post 311 controls the movement direction and position of the second slider seat 304, ensuring coordinated and synchronized mold opening and closing and core pulling actions, thus avoiding molding defects and demolding difficulties. It provides stable support and guidance for the slider seat, reducing vibration and offset, and improving molding quality.

[0036] In some embodiments, such as Figure 1 As shown, the lower thread core-pulling structure 302 includes a first core-pulling part 312 and a second core-pulling part 313 disposed on both sides of the central forming part 203. The first core-pulling part 312 is used to form the lower left half of the external thread, and the second core-pulling part 313 is used to form the lower right half of the external thread.

[0037] The first core-pulling part 312 and the second core-pulling part 313 are arranged on the left and right sides of the central forming part 203, which facilitates placement and further divides the lower half of the external thread into left and right parts for forming. Core pulling is performed in the horizontal direction, saving mold space.

[0038] Furthermore, such as Figure 4As shown, the upper threaded core-pulling structure 303 includes a molding insert 314 connected to the front mold assembly 101 and an upper threaded molding part 315 disposed at the bottom of the molding insert 314. The lower end of the molding insert 314 abuts against the lower threaded core-pulling structure 302.

[0039] The molding insert 314 is connected to the front mold assembly 101 to ensure stability during the upper thread core pulling; the upper thread molding part 315 and the molding part in the lower thread core pulling structure 302 cooperate with each other to form the external thread.

[0040] Furthermore, such as Figure 4 As shown, the molded insert 314 includes a first fixing block 316 and a second fixing block 317 protruding to both sides. The lower threaded core pulling structure 302 has a first fixing groove and a second fixing groove that are adapted to the first fixing block 316 and the second fixing block 317 respectively. The first fixing groove and the second fixing groove are used to limit the upper threaded core pulling structure 303.

[0041] The first fixing block 316 and the second fixing block 317 are adapted to the first fixing groove and the second fixing groove on the lower thread core pulling structure 302. When the mold is closed, each fixing block is inserted into the fixing groove, which realizes the limiting of the upper thread core pulling structure 303, and also reduces the loosening or misalignment that may occur during molding and demolding, thus improving the molding accuracy.

[0042] The terms and words used in the foregoing description and claims are not limited to their literal meaning, but are merely used by the applicant to enable a clear and consistent understanding of the present invention. Therefore, those skilled in the art should understand that the foregoing description of various embodiments of the present invention is for illustrative purposes only, and not intended to limit the present invention as defined by the appended claims and their equivalents.

Claims

1. A water tank product mold having an external thread core-pulling mechanism, characterized by, The utility model relates to a center core pulling assembly for pipe hollow part, upper thread core pulling structure and lower thread core pulling structure for forming upper half and lower half of outer thread, and the upper thread core pulling structure and the lower thread core pulling structure are pulled together with mold opening. The center core pulling assembly (201) comprises a first slider seat (202), a center forming part (203) arranged on the first slider seat (202), and a driving structure (204) for driving the first slider seat (202).

2. A water tank product mold having an external screw core-pulling mechanism according to claim 1, characterized in that: The lower thread core pulling structure (302) comprises a second slider seat (304) in sliding connection with the first slider seat (202), a lower thread forming part (305) arranged on the first slider seat (202), and a guide structure (306) for guiding the lower thread forming part (305).

3. A water tank product mold having an external screw core-pulling mechanism according to claim 2, characterized in that: The guide structure (306) comprises a first protrusion (307) arranged on the second slider seat (304) and in sliding connection with the first slider seat (202), and the first slider seat (202) is provided with a first sliding groove in sliding connection with the first protrusion (307).

4. A water tank product mold having an external screw core-pulling mechanism according to claim 3, characterized in that: The first protrusion (307) comprises a sliding part (309) protruding from a side wall of the second slider seat (304), a top surface of the sliding part (309) and a side surface of the second slider seat (304) form an included angle less than 90 degrees, and the first slider seat (202) is provided with a guide seat (310) in connection with the sliding part (309).

5. A water tank product mold having an external screw core-pulling mechanism according to claim 4, characterized in that: The guide structure (306) further comprises an inclined guide column (311) arranged on the front mold assembly (101) and in sliding connection with the second slider seat (304).

6. A water tank product mold having an external screw core-pulling mechanism according to claim 3, characterized in that: The lower thread core pulling structure (302) comprises a first core pulling part (312) and a second core pulling part (313) arranged on both sides of the center forming part (203), the first core pulling part (312) is used for forming a left lower half of the outer thread, and the second core pulling part (313) is used for forming a right lower half of the outer thread.

7. A water closet product mold having an external screw core-pulling mechanism according to any one of claims 2 to 6, characterized in that: The upper thread core pulling structure (303) comprises a forming insert (314) connected with the front mold assembly (101) and an upper thread forming part (315) arranged at a bottom of the forming insert (314), and a lower end of the forming insert (314) is in abutment with the lower thread core pulling structure (302).

8. A water tank product mold having an external screw core-pulling mechanism according to claim 7, characterized in that: ​ 9. A water tank product mold having an external screw core-pulling mechanism according to claim 8, characterized in that: The forming insert (314) comprises a first fixing block (316) and a second fixing block (317) protruding to two sides, and the lower threaded core-pulling structure (302) is provided with a first fixing groove and a second fixing groove respectively matched with the first fixing block (316) and the second fixing block (317), and the first fixing groove and the second fixing groove are used for limiting the upper threaded core-pulling structure (303).

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