Annular tightening device

Abstract

The utility model relates to the technical field of wheel machining dies, and discloses an annular tightening device which comprises a supporting ring located at the top end of a base station, and the supporting ring is located at the bottom end of a lower die body at the top end of the base station. The two positioning assemblies are arranged at the top end and the bottom end of the supporting ring respectively, each positioning assembly comprises a plurality of positioning pieces which are arranged on the supporting ring at equal intervals in the circumferential direction, and the supporting ring is connected with the lower die body and the base table in a positioning mode through the positioning pieces; the two connecting assemblies are arranged at the top end and the bottom end of the supporting ring respectively, each connecting assembly comprises a plurality of connecting pieces which are arranged on the supporting ring at equal intervals in the circumferential direction, the positioning pieces and the connecting pieces are arranged in a staggered mode, and the supporting ring is connected with the lower die body and the base table in a limiting mode through the connecting pieces. According to the utility model, the stability of the bottom film is ensured, the product quality is further ensured, the mounting and dismounting are convenient, and the stability after mounting is ensured.

Description

Technical Field

[0001] This utility model relates to the field of wheel processing mold technology, and in particular to a ring-shaped compression device. Background Technology

[0002] With rapid economic development and rising living standards, the demand for automobiles has increased rapidly, leading to a gradual expansion of the automotive market. As the automotive industry continues to develop rapidly, aluminum alloy wheels, as a crucial component of automobiles, directly impact the overall safety, comfort, and aesthetics of vehicles through their appearance and internal performance.

[0003] As the core tool for wheel production, wheel molds have a crucial impact on wheel production efficiency and finished product quality at every stage of their design, manufacturing, and maintenance. Through scientific design, precise manufacturing, and regular maintenance, wheel molds can efficiently and stably produce high-quality wheel products. The appropriate selection of mold materials and manufacturing processes is key to ensuring mold durability and production performance. Utilizing advanced CNC machining technology and precision measuring equipment ensures that mold machining accuracy and surface quality meet design requirements. During mold assembly and debugging, it is essential to ensure precise assembly of all components and reasonable adjustment parameters to achieve optimal production results.

[0004] In the existing low-pressure casting of aluminum alloy wheel molds, the bottom mold, under continuous high-temperature operation, will bulge upwards and deform due to heat. As the production quantity increases, the bottom mold operates under the pressure of the top mold and upper platen for extended periods. The molten aluminum inside the mold cavity needs to solidify under pressure, all of which cause the center of the bottom mold to gradually collapse downwards with increasing production volume. Thermal deformation of the bottom mold leads to changes in product shape, out-of-tolerance depth of the front rim, and affects the machining dimensions of the product, resulting in defective products.

[0005] Therefore, there is an urgent need for a ring-shaped compression device to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a ring-shaped compression device to solve the problems existing in the prior art.

[0007] To achieve the above objectives, this utility model provides the following solution: This utility model provides a ring-shaped compression device, comprising:

[0008] A support ring is located at the top of the base, and the support ring is located at the bottom end of the lower mold body at the top of the base;

[0009] Two positioning components are respectively disposed at the top and bottom of the support ring. Each positioning component includes several positioning elements, which are equally spaced along the circumference on the support ring. The support ring is positioned and connected to the lower mold body and the base through the positioning elements.

[0010] Two connecting components are respectively disposed at the top and bottom of the support ring. Each connecting component includes several connectors that are equally spaced along the circumference on the support ring. Several positioning components and several connectors are staggered. The support ring is limitedly connected to the lower mold body and the base through the connectors.

[0011] According to the present invention, a ring-shaped tightening device is provided, wherein the positioning element includes a positioning tube fixedly connected to the top and bottom of the support ring, and a plurality of positioning holes are provided at equal intervals along the circumference of the top of the base and the top of the lower mold body, the positioning tube is adapted to the positioning holes, and a limiting element is provided inside the positioning tube, the limiting element being adapted to the positioning holes.

[0012] According to the present invention, a ring-shaped tightening device includes two limiting rods. One end of each limiting rod is hinged to the inner wall of the positioning tube, and the other end of each limiting rod is fixedly connected to a limiting head. A through hole is provided on the inner wall of the positioning tube, and a limiting groove is provided on the inner wall of the positioning hole. The limiting head passes through the through hole and extends into the limiting groove. A threaded rod is rotatably connected inside the positioning tube, and a top block is threadedly connected to the threaded rod. The top block extends between the two limiting rods and is in contact with the limiting rods.

[0013] According to the present invention, a ring-shaped tightening device is provided, wherein the top and bottom ends of the support ring are provided with a plurality of vertical grooves along the circumference, the connecting member includes a first screw threadedly connected in the vertical groove, the base and the lower mold body are provided with a plurality of first connecting holes along the circumference, the first screw is threadedly connected to the first connecting holes, the support ring and the side wall of the lower mold body are provided with a plurality of second connecting holes along the circumference, the second connecting holes are threadedly connected to a connecting head, and the threaded rod and the first screw are respectively connected to the connecting head.

[0014] According to the present invention, a ring-shaped tightening device is provided, wherein the connector includes a second screw, one end of which is rotatably connected to a support block, a support plate is fixedly connected to the support block, and toothed plates are fixedly connected to both ends of the support plate. A cavity is opened inside the support ring, and two gears are rotatably connected inside the cavity. The bottom end of the threaded rod is fixedly connected to one of the gears, and the first screw is threadedly connected to the other gear. The two gears mesh with the two toothed plates respectively.

[0015] According to the annular tightening device provided by this utility model, the second connecting hole on the support ring is two rings, upper and lower, and the second connecting hole on the lower mold body is one ring, corresponding to the second connecting hole located at the upper part of the support ring.

[0016] According to the present invention, a ring-shaped tightening device is provided, wherein a rectangular slide is provided inside the second connecting hole on the support ring, and the support plate is adapted to the rectangular slide.

[0017] According to the present invention, a torsion spring is provided between the limiting rod and the inner wall of the positioning tube, and the two ends of the torsion spring are respectively fixedly connected to the inner wall of the positioning tube and the limiting rod.

[0018] According to the present invention, a ring-shaped tightening device is provided, wherein a guide groove is provided on the inner side wall of the positioning tube, and a guide block is fixedly connected to the outer side wall of the top block, and the guide block is adapted to the guide groove.

[0019] According to the present invention, an annular tightening device is provided, wherein inclined surfaces are provided on both sides of the top end of the top block, and the inclined surfaces slide in contact with the limiting rod.

[0020] Compared with the prior art, the present invention has the following advantages and technical effects:

[0021] This utility model provides a ring-shaped tightening device. In use, a support ring is mounted on a base platform via a positioning component, and a lower mold body is mounted on the support ring via the same positioning component, achieving precise and rapid positioning. A connecting component ensures a stable connection between the support ring and the base platform, and between the lower mold body and the support ring. This application guarantees the stability of the bottom film, thereby ensuring product quality, while also facilitating installation and disassembly and ensuring stability after installation. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the positioning component structure of this utility model;

[0024] Figure 2 This utility model Figure 1 Enlarged view of a portion of point A in the middle;

[0025] Figure 3 This is a schematic diagram of the connecting component structure of this utility model;

[0026] Figure 4 This utility model Figure 3 Enlarged view of a section at point B in the middle;

[0027] Figure 5This is a schematic diagram of the top surface structure of the support ring of this utility model;

[0028] The components are as follows: 1. Support ring; 2. Base; 3. Lower mold body; 4. Positioning tube; 5. Positioning hole; 6. Limiting rod; 7. Limiting head; 8. Through hole; 9. Limiting groove; 10. Threaded rod; 11. Top block; 12. Vertical groove; 13. First screw; 14. First connecting hole; 15. Second connecting hole; 16. Second screw; 17. Support block; 18. Support plate; 19. Toothed plate; 20. Gear; 21. Rectangular slide; 22. Torsion spring; 23. Guide slide; 24. Guide block. Detailed Implementation

[0029] 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.

[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] In related technologies, aluminum alloy wheel manufacturing is a material-intensive, labor-intensive, and low-value-added industry. Furthermore, aluminum casting is an energy-intensive industry with poor working conditions for workers. Therefore, enterprises must continuously innovate to improve product quality and reduce costs to ensure sustainable development. During the production process of low-pressure casting aluminum alloy wheel molds, the internal stress generated by heating in new molds causes the lower mold body to deform upwards, while simultaneously causing the blank to deform towards the flange surface. After a certain number of mold lifespans, the internal stress in the lower mold begins to decrease, the mold hardness begins to decrease, and the lower mold gradually deforms downwards, causing the blank to deform towards the front of the blank. Due to the large order volume for individual wheel types, multiple sets of molds need to be produced online simultaneously. The varying lifespans of the molds lead to inconsistent deformation of the production blanks, increasing the difficulty of machining processes and increasing production scrap. Therefore, the anti-deformation structure design of the casting molds is particularly important.

[0032] In related technologies, a wheel casting mold with an anti-deformation structure is disclosed. It includes N downwardly extending anti-deformation studs evenly distributed in a ring along the center of the bottom of the lower mold body's back cavity, where N = the number of spoke groups. Each anti-deformation stud corresponds to a spoke casting area. The anti-deformation studs have internal locking screw holes along their centers. An anti-deformation ring extends vertically downwards from the bottom of the lower mold body's back cavity and connects with the N anti-deformation studs to form an integrated structure. A central mounting platform is located at the center of the lower mold plate, closely supporting the anti-deformation ring. The internal locking screw holes correspond one-to-one with and connect to the internal locking holes on the central mounting platform. This casting mold uses anti-deformation studs in the spoke casting areas. Locking the anti-deformation studs provides downward tension to prevent the lower mold body from deforming upwards, while the anti-deformation ring prevents the lower mold body from collapsing. The anti-deformation studs and anti-deformation ring form an integrated structure, preventing localized and lateral deformation. The anti-deformation structure can improve blank deformation and window flash, enhancing product consistency and mold lifespan.

[0033] In the aforementioned related technologies, connections are achieved solely through bolts. However, these bolts can loosen over time, affecting the stability of the connection. Furthermore, manual positioning is required during installation to ensure precise alignment of the bolt holes, making installation and disassembly inconvenient and reducing overall processing efficiency. To address these issues, this application provides the following solution:

[0034] Reference Figures 1-5 This utility model provides a ring-shaped compression device, comprising:

[0035] Support ring 1 is located at the top of base 2, and support ring 1 is located at the bottom of the lower mold body 3 at the top of base 2;

[0036] Two positioning components are respectively set at the top and bottom of the support ring 1. The positioning components include several positioning parts, which are equally spaced on the support ring 1 in the circumferential direction. The support ring 1 is positioned and connected to the lower mold body 3 and the base 2 through the positioning parts.

[0037] Two connecting components are respectively set at the top and bottom of the support ring 1. The connecting components include several connectors, which are equally spaced along the circumference on the support ring 1. Several positioning components and several connectors are staggered. The support ring 1 is limited and connected to the lower mold body 3 and the base 2 through the connectors.

[0038] In one embodiment of this application, during use, the support ring 1 is installed on the base 2 by means of a positioning member, and the lower mold body 3 is installed on the support ring 1 by means of a positioning member, so as to achieve precise and rapid positioning. Then, a stable connection between the support ring 1 and the base 2, and between the lower mold body 3 and the support ring 1 is achieved by means of a connecting member.

[0039] As an optional implementation, the positioning component includes a positioning tube 4 fixedly connected to the top and bottom of the support ring 1. The top of the base 2 and the top of the lower mold body 3 are provided with a plurality of positioning holes 5 at equal intervals along the circumference. The positioning tube 4 is adapted to the positioning holes 5. A limiting component is provided inside the positioning tube 4, and the limiting component is adapted to the positioning holes 5.

[0040] In one embodiment of this application, a number of positioning tubes 4 and positioning holes 5 are provided to achieve rapid positioning and installation between the base 2, the lower mold body 3 and the support ring 1.

[0041] As an optional implementation, the limiting component includes two limiting rods 6. One end of the limiting rod 6 is hinged to the inner wall of the positioning tube 4, and the other end of the limiting rod 6 is fixedly connected to a limiting head 7. A through hole 8 is provided on the inner wall of the positioning tube 4, and a limiting groove 9 is provided on the inner wall of the positioning hole 5. The limiting head 7 passes through the through hole 8 and extends into the limiting groove 9. A threaded rod 10 is rotatably connected inside the positioning tube 4, and a top block 11 is threadedly connected to the threaded rod 10. The top block 11 extends between the two limiting rods 6 and is in contact with the limiting rods 6.

[0042] In one embodiment of this application, the rotation of the threaded rod 10 causes the top block 11 to move vertically, thereby controlling the rotation of the limit rods 6 hinged on both sides, so that the limit head 7 passes through the through hole 8 and extends into the corresponding limit groove 9, thereby achieving a stable connection between the positioning tube 4 and the positioning hole 5.

[0043] As an optional implementation, the top and bottom ends of the support ring 1 are provided with a plurality of vertical grooves 12 along the circumference. The connecting parts include a first screw 13 threadedly connected in the vertical groove 12. The base 2 and the lower mold body 3 are provided with a plurality of first connecting holes 14 along the circumference. The first screw 13 is threadedly connected to the first connecting holes 14. The side walls of the support ring 1 and the lower mold body 3 are provided with a plurality of second connecting holes 15 along the circumference. A connector is threadedly connected in the second connecting hole 15. The threaded rod 10 and the first screw 13 are respectively connected to the connector.

[0044] In one embodiment of this application, the first screw 13 is threadedly connected in the vertical groove 12. When the first screw 13 rotates, it rises into the first connecting hole 14 and continues to rotate and is threadedly connected to the first connecting hole 14, thereby achieving a stable connection between the support ring 1, the base 2, and the lower mold body 3.

[0045] As an optional implementation, the connector includes a second screw 16, one end of which is rotatably connected to a support block 17. A support plate 18 is fixedly connected to the support block 17, and toothed plates 19 are fixedly connected to both ends of the support plate 18. A cavity is opened inside the support ring 1, and two gears 20 are rotatably connected inside the cavity. The bottom end of the threaded rod 10 is fixedly connected to one of the gears 20, and the first screw 13 is threadedly connected to the other gear 20. The two gears 20 mesh with the two toothed plates 19 respectively.

[0046] In one embodiment of this application, during use, the support plate 18 is inserted into the second connecting hole 15 on the support ring 1, so that it enters the cavity. By turning the threaded second screw 16, the support plate 18 is moved laterally. The meshing gear 20 and toothed plate 19 drive the corresponding first screw 13 to rotate. The threaded rod 10 follows the rotation of the gear 20, thereby controlling the connection between the first screw 13 and the lower mold body 3 and the base 2. The threaded rod 10 drives the top block 11 to move.

[0047] As an optional implementation, the second connecting hole 15 on the support ring 1 has two rings, one upper and one lower, and the second connecting hole 15 on the lower mold body 3 has one ring, which corresponds to the second connecting hole 15 located at the upper part of the support ring 1.

[0048] In one embodiment of this application, the second connecting hole 15 on the support ring 1 has two layers: the lower layer is used to directly install the connector to achieve connection with the base 2, and the upper layer is used to install the connector to achieve connection between the support ring 1 and the lower mold body 3.

[0049] As an optional implementation, a rectangular slide 21 is provided inside the second connecting hole 15 on the support ring 1, and the support plate 18 is adapted to the rectangular slide 21.

[0050] In one embodiment, the rectangular slide 21 is adapted to the support plate 18 to ensure the lateral sliding of the support plate 18.

[0051] As an optional implementation, a torsion spring 22 is provided between the limiting rod 6 and the inner wall of the positioning tube 4, with both ends of the torsion spring 22 fixedly connected to the inner wall of the positioning tube 4 and the limiting rod 6, respectively.

[0052] In one embodiment of this application, the limit rod 6 is reset by a torsion spring 22.

[0053] As an optional implementation, a guide groove 23 is provided on the inner wall of the positioning tube 4, and a guide block 24 is fixedly connected to the outer wall of the top block 11. The guide block 24 is adapted to the guide groove 23.

[0054] In one embodiment of this application, the guide block 24 slides within the guide groove 23 to ensure stable sliding of the guide block 24.

[0055] As an optional implementation, the top block 11 has inclined surfaces on both sides of its top end, and the inclined surfaces slide in contact with the limiting rod 6.

[0056] In one embodiment of this application, the inclined surface is provided to ensure the stable pushing of the top block 11 on the limiting rod 6.

[0057] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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.

[0058] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A ring-shaped compression device, characterized in that, include: A support ring (1) is located at the top of the base (2), and the support ring (1) is located at the bottom of the lower mold body (3) at the top of the base (2); Two positioning components are respectively set at the top and bottom of the support ring (1). The positioning components include several positioning elements, which are equally spaced along the circumference on the support ring (1). The support ring (1) is positioned and connected to the lower mold body (3) and the base (2) through the positioning elements. Two connecting components are respectively disposed at the top and bottom of the support ring (1). The connecting components include several connecting parts, which are disposed at equal intervals along the circumference on the support ring (1). Several positioning parts and several connecting parts are staggered. The support ring (1) is limited and connected to the lower mold body (3) and the base (2) through the connecting parts.

2. The annular compression device according to claim 1, characterized in that: The positioning component includes a positioning tube (4) fixedly connected to the top and bottom of the support ring (1). The top of the base (2) and the top of the lower mold body (3) are provided with a plurality of positioning holes (5) at equal intervals along the circumference. The positioning tube (4) is adapted to the positioning holes (5). A limiting component is provided inside the positioning tube (4), and the limiting component is adapted to the positioning holes (5).

3. The annular compression device according to claim 2, characterized in that: The limiting component includes two limiting rods (6). One end of the limiting rod (6) is hinged to the inner wall of the positioning tube (4), and the other end of the limiting rod (6) is fixedly connected to a limiting head (7). A through hole (8) is provided on the inner wall of the positioning tube (4), and a limiting groove (9) is provided on the inner wall of the positioning hole (5). The limiting head (7) passes through the through hole (8) and extends into the limiting groove (9). A threaded rod (10) is rotatably connected inside the positioning tube (4), and a top block (11) is threadedly connected to the threaded rod (10). The top block (11) extends between the two limiting rods (6) and is in contact with the limiting rods (6).

4. The annular compression device according to claim 3, characterized in that: The support ring (1) has several vertical grooves (12) circumferentially opened at its top and bottom ends. The connector includes a first screw (13) threadedly connected in the vertical groove (12). The base (2) and the lower mold body (3) have several first connecting holes (14) circumferentially opened. The first screw (13) is threadedly connected to the first connecting holes (14). The support ring (1) and the lower mold body (3) have several second connecting holes (15) circumferentially opened on their side walls. A connector is threadedly connected in the second connecting hole (15). The threaded rod (10) and the first screw (13) are respectively connected to the connector.

5. The annular compression device according to claim 4, characterized in that: The connector includes a second screw (16), one end of which is rotatably connected to a support block (17). A support plate (18) is fixedly connected to the support block (17). Both ends of the support plate (18) are fixedly connected to toothed plates (19). The support ring (1) has a cavity inside, and two gears (20) are rotatably connected inside the cavity. The bottom end of the threaded rod (10) is fixedly connected to one of the gears (20). The first screw (13) is threadedly connected to the other gear (20). The two gears (20) mesh with the two toothed plates (19) respectively.

6. The annular compression device according to claim 4, characterized in that: The second connecting hole (15) on the support ring (1) consists of two rings, one upper and one lower, while the second connecting hole (15) on the lower mold body (3) consists of one ring, corresponding to the second connecting hole (15) located at the upper part of the support ring (1).

7. The annular compression device according to claim 5, characterized in that: The second connecting hole (15) on the support ring (1) is provided with a rectangular slide (21), and the support plate (18) is adapted to the rectangular slide (21).

8. The annular compression device according to claim 3, characterized in that: A torsion spring (22) is provided between the limiting rod (6) and the inner wall of the positioning tube (4), and the two ends of the torsion spring (22) are fixedly connected to the inner wall of the positioning tube (4) and the limiting rod (6) respectively.

9. The annular compression device according to claim 3, characterized in that: The positioning tube (4) has a guide groove (23) on its inner side wall, and a guide block (24) is fixedly connected to the outer side wall of the top block (11). The guide block (24) is adapted to the guide groove (23).

10. A ring-shaped compression device according to claim 9, characterized in that: The top block (11) has inclined surfaces on both sides of its top end, and the inclined surfaces slide in contact with the limiting rod (6).

Images