Anti-floating structure of multi-layer injection mold for brush roller

Abstract

The application relates to a floating-preventing structure of a brush roller multi-layer injection mold, and relates to the field of mold structures.The floating-preventing structure comprises a base, an outer cylinder, a center rod and an inner cylinder, the outer cylinder, the center rod and the inner cylinder are coaxially arranged, the base is arranged at the bottom of the outer cylinder and is used for plugging, the top of the center rod protrudes from the top of the inner cylinder, and the center rod is provided with a counterweight hole through which a counterweight rod can pass and penetrate in the radial direction. Through the transformation of the center rod in the existing mold, the counterweight rod can be assembled as required, when the inner cylinder needs to be used, the counterweight rod can be inserted into the counterweight hole as required, the counterweight of the top of the inner cylinder is increased through the counterweight rod, and the stability of the counterweight rod is improved. When the inner cylinder does not need to be used, the counterweight rod can be disassembled, and the operation is convenient. The application achieves the technical effects of effectively preventing the inner cylinder of the brush roller multi-layer injection mold from floating upwards and facilitating installation and operation.

Description

Technical Field

[0001] This application relates to the field of brush roller processing mold technology, and in particular to an anti-buoyancy structure for a multi-layer injection mold for brush rollers. Background Technology

[0002] Brush rollers, as consumables used for cleaning wafers, play an important role in semiconductor manufacturing and other fields. Used in conjunction with wafer cleaning equipment, they are crucial for ensuring wafer cleanliness and production quality. With the continuous development of the semiconductor industry, the performance and quality requirements for brush rollers are also increasing, and brush roller processing mold technology is constantly improving to meet different production needs and product specifications.

[0003] A wafer brush roller mold reference in related technologies Figure 5 and Figure 6 As shown, it includes a base 1, an outer cylinder 11, and a central rod 12. The outer cylinder 11 and the central rod 12 are coaxially arranged. The base 1 is located at the bottom of the outer cylinder 11 to seal the bottom of the outer cylinder 11. In use, the raw material is placed inside the outer cylinder 11, and the raw material expands in a foam-like manner to form the final brush roller. The central rod 12 is used to assist in forming the hollow structure inside the brush roller.

[0004] The aforementioned technologies have the following drawbacks: When the outer surface of the brush roller has textures or structural designs, an inner cylinder 13 needs to be added inside the outer cylinder 11. The side wall of the inner cylinder 13 is provided with holes or grooves to generate the textures on the brush roller surface. In addition, compared with the outer cylinder 11, the diameter and wall thickness of the inner cylinder 13 are usually smaller, so the overall weight is lighter. During the expansion of the raw material, the inner cylinder 13 is easily pushed upward, affecting the product quality. Therefore, it needs to be improved. Utility Model Content

[0005] To improve the stability of the inner cylinder, this application provides an anti-buoyancy structure for a multi-layer injection mold for brush rollers.

[0006] The anti-buoyancy structure of a multi-layer injection mold for brush rollers provided in this application adopts the following technical solution:

[0007] A multi-layer injection mold anti-buoyancy structure for a brush roller includes a base, an outer cylinder, and a central rod. The outer cylinder and the central rod are coaxially arranged. The base is located at the bottom of the outer cylinder to seal the bottom of the outer cylinder. An inner cylinder is also provided inside the outer cylinder. The inner cylinder is coaxially arranged with the central rod. The top of the central rod extends out of the top of the inner cylinder. The central rod has a counterweight hole arranged radially. A counterweight rod passes through the counterweight hole and abuts against the top of the inner cylinder.

[0008] By adopting the above technical solution, the center rod in the existing mold is modified to realize the on-demand assembly of the counterweight rod. When the inner cylinder is needed, the counterweight rod can be inserted into the counterweight hole as needed, and the counterweight rod can be used to add counterweight to the top of the inner cylinder to improve the stability of the inner cylinder. When the inner cylinder is not needed, the counterweight rod can be removed, which is convenient to operate.

[0009] Preferably, the counterweight hole is a strip-shaped hole, the length direction of the counterweight hole is the axial direction of the central rod, and the counterweight rod can slide along the axial direction of the central rod within the counterweight hole.

[0010] By adopting the above technical solution, the counterweight rod can slide axially within the counterweight hole of the central rod. Combined with the setting of the counterweight rod abutting against the top of the inner cylinder, the position of the counterweight rod can be adjusted as needed to counterweight the top of the inner cylinder at different heights, further improving the flexibility and adaptability of adding counterweight to the inner cylinder, thereby better improving the stability of the inner cylinder.

[0011] Preferably, a pressing elastic element is provided at the top of the inner wall of the counterweight hole, and a pressing element is connected to the bottom of the pressing elastic element. The pressing element is located above the counterweight rod and abuts against the counterweight rod.

[0012] By adopting the above technical solution, a downward elastic element is provided at the top of the inner wall of the counterweight hole. The bottom of the downward elastic element is connected to the downward pressure element and the downward pressure element abuts against the counterweight rod. The elastic force of the downward elastic element can be used to apply downward pressure to the counterweight rod, thereby further enhancing the stability of the inner cylinder.

[0013] Preferably, the surface of the counterweight rod is provided with a positioning groove, which is adapted to the pressing member.

[0014] By adopting the above technical solution, the surface of the counterweight rod is provided with a positioning groove that matches the pressing component, which enables the pressing component to act accurately at the designated position of the counterweight rod, thereby enhancing the positioning effect on the counterweight rod and the inner cylinder.

[0015] Preferably, the two opposite inner sidewalls inside the counterweight hole are provided with sliding grooves, and the pressing member is rod-shaped with its end adapted to be inserted into the sliding groove and can slide up and down along the sliding groove.

[0016] By adopting the above technical solution, a sliding groove is provided inside the counterweight hole on the two inner side walls. The end of the pressing component is adapted to be inserted into the sliding groove and can slide up and down along the sliding groove, which enables the pressing component to move up and down more stably, enhances its pressing stability on the counterweight rod, and thus improves the stability of the inner cylinder.

[0017] Preferably, a center seat is provided at the center of the top surface of the base, the center seat is provided with a center hole, and the center rod is threadedly connected to the center hole.

[0018] By adopting the above technical solution, a central seat is provided at the center of the top surface of the base, the central seat is provided with a central hole, and the central rod is threadedly connected to the central hole, so as to realize a stable connection between the central rod and the base and ensure the stability of the mold structure.

[0019] Preferably, the base is cylindrical, the base is threaded to the bottom of the outer cylinder, and an extension retaining ring is provided on the outer edge of the side wall of the base, the extension retaining ring abutting against the bottom end face of the outer cylinder.

[0020] By adopting the above technical solution, the base is designed as a cylinder and threaded to the bottom of the outer cylinder, which facilitates the installation and disassembly of the base and the outer cylinder. An extended retaining ring is set on the outer edge of the side wall of the base and abuts against the bottom end face of the outer cylinder, which can play a positioning and sealing role in the connection between the base and the outer cylinder. At the same time, in conjunction with the outer cylinder, the central rod, the inner cylinder, the counterweight hole and the counterweight rod, the raw materials can be contained and shaped in the multi-layer injection mold of the brush roller. The counterweight rod adds counterweight to the top of the inner cylinder, thereby improving the stability of the inner cylinder.

[0021] Preferably, the bottom surface of the base is provided with a reserved hole, and an operating handle is provided inside the reserved hole.

[0022] By adopting the above technical solution, a reserved hole is provided on the bottom surface of the base, and an operating handle is installed in the reserved hole to facilitate the operation of the base.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By modifying the center rod, the counterweight rod can be assembled as needed. Inserting the counterweight rod can add counterweight to the top of the inner cylinder, thereby improving the stability of the inner cylinder;

[0025] 2. The counterweight hole is a strip-shaped hole and the counterweight rod can slide along the axial direction of the central rod, which facilitates the adjustment of the counterweight rod position;

[0026] 3. A pressing elastic element and a pressing element are installed at the top of the inner wall of the counterweight hole, which can further stabilize the effect of the counterweight rod on the inner cylinder and prevent the inner cylinder from shifting upward. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;

[0028] Figure 2 This is a structural schematic diagram illustrating the connection between the counterweight rod and the inner cylinder in an embodiment of this application;

[0029] Figure 3 Examples of this application Figure 2 A sectional view along the AA direction is used to show the connection relationship between the counterweight rod and the center rod;

[0030] Figure 4This is a structural schematic diagram illustrating the connection relationship between the base, the outer cylinder, and the central rod in an embodiment of this application;

[0031] Figure 5 This is a schematic diagram of the structure of a brush roller injection mold (without an inner cylinder) in the context of related technologies.

[0032] Figure 6 This is a schematic diagram of the structure of a brush roller injection mold (with an inner cylinder) for related technologies.

[0033] In the picture:

[0034] 1. Base; 11. Outer cylinder; 12. Center rod; 120. Counterweight hole; 121. Counterweight rod; 13. Inner cylinder; 14. Extension retaining ring; 15. Center seat; 150. Center hole; 16. Reserved hole; 17. Operating handle;

[0035] 2. Pressing elastic element; 21. Pressing element; 22. Slide groove; 23. Positioning groove. Detailed Implementation

[0036] The technical solutions in the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. The described embodiments are only possible technical implementations of this utility model, but are not limited thereto. Other embodiments obtained by those skilled in the art in conjunction with the embodiments of this utility model without creative effort are also within the protection scope of this utility model.

[0037] This application mainly adopts a scheme of setting a counterweight hole in the central rod and having the counterweight rod abut against the inner cylinder, which achieves the effect of improving the stability of the inner cylinder. The following is a further detailed description of this application.

[0038] Example

[0039] Reference Figure 1 The anti-buoyancy structure of the multi-layer injection mold for brush rollers provided in this application includes a base 1, an outer cylinder 11, a central rod 12, and an inner cylinder 13. The outer cylinder 11 and the central rod 12 are coaxially aligned. The base 1 is located at the bottom of the outer cylinder 11 to seal its bottom. The inner cylinder 13 is located inside the outer cylinder 11 and is coaxial with the central rod 12. The top of the central rod 12 extends beyond the top of the inner cylinder 13. A counterweight hole 120 is radially provided on the central rod 12, and a counterweight rod 121 passes through the counterweight hole 120, abutting against the top of the inner cylinder 13. When the raw material expands, the weight of the counterweight rod 121 prevents the inner cylinder 13 from shifting upwards, improving the stability of the inner cylinder 13. Furthermore, when the inner cylinder 13 is needed, the counterweight rod 121 can be inserted into the counterweight hole 120 as needed; when the inner cylinder 13 is not needed, the counterweight rod 121 can be removed, making operation convenient.

[0040] Specifically, refer to Figure 2 and Figure 3 The counterweight hole 120 is arranged radially along the central rod 12 and is structurally a strip-shaped hole. The length direction of the counterweight hole 120 is consistent with the axial direction of the central rod 12. This design allows the counterweight rod 121 to slide along the axial direction of the central rod 12 within the counterweight hole 120. Alternatively, the counterweight hole 120 can be other shapes, such as elliptical, but the strip-shaped hole is more convenient in processing and use and can better guide the sliding of the counterweight rod 121.

[0041] A counterweight rod 121 passes through the counterweight hole 120. Its material can be metal, such as steel, to provide sufficient weight to stabilize the inner cylinder 13. Alternatively, an alloy material can be used to reduce its size while maintaining weight. The counterweight rod 121 abuts against the top of the inner cylinder 13. When the raw material expands and generates an upward thrust, the counterweight rod 121 counteracts this force, thus maintaining the stability of the inner cylinder 13.

[0042] The combination logic of the counterweight hole 120 and the counterweight rod 121 is that the counterweight hole 120 provides a space for the counterweight rod 121 to be installed and slid, allowing the counterweight rod 121 to be adjusted and disassembled according to actual needs. The combined effect is to achieve flexible counterweighting of the inner cylinder 13 of the multi-layer injection mold of the brush roller, thereby improving the stability of the inner cylinder 13. This is because the sliding counterweight rod 121 can adapt to inner cylinders 13 of different heights, and the detachable design facilitates the use of the mold under different production requirements.

[0043] In addition, the counterweight hole 120 is also equipped with a pressing elastic element 2 and a pressing element 21.

[0044] The downward elastic element 2 is disposed at the top of the inner wall of the counterweight hole 120, and its bottom is connected to the downward pressure element 21. The downward pressure element 21 is located above the counterweight rod 121 and abuts against the counterweight rod 121. The downward elastic element 2 can be a spring, which provides a downward elastic force, allowing the downward pressure element 21 to continuously apply pressure to the counterweight rod 121, further enhancing the stabilizing effect of the counterweight rod 121 on the inner cylinder 13. Alternatively, the downward elastic element 2 can also be a rubber elastic block, etc., but the elastic performance of a spring is more stable.

[0045] The counterweight rod 121 has a positioning groove 23 on its surface, which is adapted to the pressing member 21. In this embodiment, the pressing member 21 is a round rod, and the positioning groove 23 is an arc-shaped groove. When the pressing member 21 and the positioning groove 23 are engaged, the sliding or shaking of the counterweight rod 121 in the counterweight hole 120 can be reduced, thereby improving the stability of the counterweight rod 121.

[0046] The counterweight hole 120 has two opposing inner sidewalls with grooves 22. The end of the pressing member 21 is fitted into the groove 22 and can slide up and down along the groove 22. The groove 22 can better guide the sliding of the pressing member 21. By sliding in the groove 22, the pressing member 21 can ensure the stability of its movement and accurately apply pressure to the counterweight rod 121.

[0047] The combination logic of these components is as follows: the pressing elastic element 2 applies pressure to the counterweight rod 121 through the pressing element 21; the positioning groove 23 ensures accurate matching between the pressing element 21 and the counterweight rod 121; and the sliding groove 22 ensures the stability of the movement of the pressing element 21. The combined effect is to further improve the stability of the counterweight rod 121, thereby better maintaining the stable state of the inner cylinder 13. This is because the various components cooperate with each other to form a complete pressure application and positioning system, making the counterweight rod 121 more reliable during operation.

[0048] Reference Figure 4 The base 1 is cylindrical and threadedly connected to the bottom of the outer cylinder 11. This connection ensures a tight seal between the base 1 and the outer cylinder 11, preventing material leakage. An extended retaining ring 14 is provided on the outer edge of the side wall of the base 1, abutting against the bottom end face of the outer cylinder 11. The extended retaining ring 14 further enhances the sealing effect and provides a certain positioning function for the connection between the base 1 and the outer cylinder 11. The extended retaining ring 14 can be an integrally formed ring structure with the base 1, made of the same material. A center seat 15 is provided at the center of the top surface of the base 1, with a center hole 150. The center rod 12 is threadedly connected to the center hole 150. The center seat 15 can be a circular block structure made of the same material as the base 1, such as metal. The inner wall of the center hole 150 is threaded, matching the external thread of the center rod 12. This threaded connection ensures the center rod 12 is securely installed and facilitates disassembly and replacement. Replacement or snap-fit ​​methods can also be used, but the threaded connection is more stable and reliable. The bottom surface of the base 1 has a pre-drilled hole 16, and an operating handle 17 is installed inside the pre-drilled hole 16. The operating handle 17 can be a rod-shaped structure for easy gripping by the operator. When it is necessary to install or remove the base 1, the base 1 can be rotated more easily through the operating handle 17, improving work efficiency.

[0049] The assembly logic of the various parts of the base 1 is as follows: the central seat 15 and the central hole 150 provide an installation position for the central rod 12, ensuring the stability of the central rod 12; the threaded connection between the base 1 and the outer cylinder 11, as well as the setting of the extension retaining ring 14, ensure the sealing and connection stability of the mold; the setting of the operating handle 17 facilitates the installation and disassembly of the base 1. The combined effect is to make the structure of the entire mold more stable and reasonable, easier to operate and maintain, and improve the practicality of the mold.

[0050] The implementation principle of this embodiment is as follows: The anti-buoyancy structure of the multi-layer injection mold for brush rollers uses a counterweight hole 120 and a counterweight rod 121 on the central rod 12. The weight of the counterweight rod 121 and its sliding and detachable characteristics flexibly counterweight the inner cylinder 13 within the multi-layer injection mold, effectively preventing the inner cylinder 13 from shifting upwards during material expansion and improving the stability of the inner cylinder 13. Simultaneously, the central seat 15, central hole 150, and extended retaining ring 14 of the base 1 ensure the overall stability and sealing of the mold. The reserved hole 16 and operating handle 17 facilitate the installation and disassembly of the mold. The downward pressing elastic element 2, downward pressing element 21, positioning groove 23, and sliding groove 22 within the counterweight hole 120 further enhance the stability of the counterweight rod 121, making the entire mold more reliable and practical during production. Compared to existing technologies, this significantly improves the forming quality of the brush roller and meets the production requirements of high-quality brush rollers.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multi-layer injection mold anti-buoyancy structure for a brush roller, comprising a base (1), an outer cylinder (11), and a central rod (12), wherein the outer cylinder (11) and the central rod (12) are coaxially arranged, and the base (1) is disposed at the bottom of the outer cylinder (11) for sealing the bottom of the outer cylinder (11), characterized in that: The outer cylinder (11) is further provided with an inner cylinder (13). The inner cylinder (13) is coaxially arranged with the central rod (12). The top of the central rod (12) extends out of the top of the inner cylinder (13). The central rod (12) is provided with a counterweight hole (120) in the radial direction. A counterweight rod (121) passes through the counterweight hole (120) and abuts against the top of the inner cylinder (13).

2. The anti-buoyancy structure of a multi-layer injection mold for brush rollers according to claim 1, characterized in that: The counterweight hole (120) is a strip-shaped hole, and the length direction of the counterweight hole (120) is consistent with the axial direction of the central rod (12). The counterweight rod (121) can slide along the axial direction of the central rod (12) within the counterweight hole (120).

3. The anti-buoyancy structure of a multi-layer injection mold for brush rollers according to claim 2, characterized in that: A pressing elastic element (2) is provided at the top of the inner wall of the counterweight hole (120), and a pressing element (21) is connected to the bottom of the pressing elastic element (2). The pressing element (21) is located above the counterweight rod (121) and abuts against the counterweight rod (121).

4. The anti-buoyancy structure of a multi-layer injection mold for brush rollers according to claim 3, characterized in that: The counterweight rod (121) has a positioning groove (23) on its surface, which is adapted to the pressing member (21).

5. The anti-buoyancy structure of a multi-layer injection mold for brush rollers according to claim 3, characterized in that: The counterweight hole (120) has two opposing inner sidewalls with sliding grooves (22). The pressing member (21) is rod-shaped and its end is adapted to be inserted into the sliding groove (22) and can slide up and down along the sliding groove (22).

6. The anti-buoyancy structure of a multi-layer injection mold for brush rollers according to claim 1, characterized in that: A center seat (15) is provided at the center of the top surface of the base (1), and the center seat (15) is provided with a center hole (150). The center rod (12) is threadedly connected to the center hole (150).

7. The anti-buoyancy structure of a multi-layer injection mold for brush rollers according to claim 1, characterized in that: The base (1) is cylindrical and is threaded to the bottom of the outer cylinder (11). An extension retaining ring (14) is also provided on the outer edge of the side wall of the base (1), and the extension retaining ring (14) abuts against the bottom end face of the outer cylinder (11).

8. The anti-buoyancy structure of a multi-layer injection mold for brush rollers according to claim 7, characterized in that: The base (1) has a reserved hole (16) on its bottom surface, and an operating handle (17) is provided inside the reserved hole (16).

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