Die holder positioning structure
By designing a positioning component composed of guide sleeve, retaining ring and convex column between the lower mold seat and the backing plate, the positioning accuracy problem caused by the limited strength of the traditional pin is solved, and the accurate positioning between the lower mold seat and the backing plate is achieved.
Patent Information
- Application Number
- CN202421373471.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-17
AI Technical Summary
In the positioning process between the lower mold seat and the pad, the traditional pins are limited in strength and are easily deformed by impact, resulting in a decrease in positioning accuracy. Especially when multiple lower mold seats are positioned simultaneously, it is difficult to ensure accurate positioning of the relative position.
A mold seat positioning structure is designed, including a lower mold seat, a pad plate and a positioning component located between the two. The positioning component is composed of a guide sleeve, a retaining ring and a convex column. The guide sleeve is located on the lower mold seat, and the convex column is located on the pad plate. The retaining ring is arranged on the convex column. The retaining ring forms elastic sliding along the convex column to avoid hard contact with the bottom of the convex column or the surface of the convex column.
Through the relative sliding cooperation between the guide sleeve, retaining ring and convex column, accurate positioning between the lower mold seat and the pad is achieved, impact deformation of the positioning component is avoided, and accurate positioning of the mold is ensured that the mold is always accurately positioned during multiple disassembly and assembly, and is suitable for relative positioning between multiple lower mold seats.
Smart Images
Figure CN222659874U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of molds, in particular to a mold base positioning structure. Background Art
[0002] A pad is usually installed at the bottom of the lower die base, and positioning is required between the lower die base and the pad. Due to the heavy weight of the lower die base, the positioning part is prone to impact deformation during the installation and positioning process. In addition, when two or more lower die bases are positioned on the same pad at the same time, the relative positions between adjacent lower die bases also need to be accurately positioned. The traditional approach is to add pins between the lower die base and the pad to achieve the positioning effect. However, the problem is that during the installation of the lower die base, the strength of the pins is limited and they are easily deformed by impact, which greatly reduces the positioning accuracy. Utility Model Content
[0003] The utility model aims to provide a mold base positioning structure designed to solve the deficiencies of the above-mentioned technology.
[0004] The utility model designs a mold base positioning structure, including a lower mold base, a pad and at least one positioning component located between the lower mold base and the pad, the positioning component includes a first positioning hole opened on the lower mold base, a guide sleeve is provided in the first positioning hole, and the guide sleeve moves with the lower mold base, the positioning component also includes a boss arranged on the surface of the pad facing the first positioning hole, a retaining ring coaxial with the boss is provided outside the boss, the guide sleeve can slide axially relative to the boss, and the retaining ring can slide axially elastically relative to the boss, wherein the bottom of the retaining ring always maintains a non-contact state with the bottom of the boss or the surface of the pad.
[0005] Preferably, there are four positioning components, which are located at the four corners between the lower die base and the backing plate.
[0006] Further optimization is performed in that a second positioning hole corresponding to the first positioning hole is opened on the pad, a guide column is arranged in the second positioning hole, the bottom section of the guide column is installed in the second positioning hole, and the top section of the guide column extends and is higher than the second positioning hole to form a convex column.
[0007] In a further optimization, the outer diameter of the bottom section of the guide pillar is larger than that of the top section, so that a step surface is formed between the bottom section and the top section.
[0008] Further optimized, the guide column is provided with an axial through hole, and a fastener is provided in the axial through hole to fix the guide column in the second positioning hole.
[0009] Further optimization is performed, a knock-out through hole communicating with the second positioning hole is opened at the bottom of the pad.
[0010] Preferably, an elastic component is provided between the bottom of the retaining ring and the boss, so that an elastic buffer is formed when the retaining ring and the boss slide.
[0011] Further optimization, the elastic component includes a mounting hole opened on the stepped surface and coaxial with the boss, a push rod and a return spring are installed in the mounting hole from top to bottom, the bottom surface of the retaining ring is opposite to the stepped surface of the guide column, the top end of the push rod extends out of the mounting hole and abuts against the bottom surface of the retaining ring, and the bottom end of the push rod abuts against one end of the return spring, so that the top end of the push rod always abuts against the bottom surface of the retaining ring under the action of the return spring.
[0012] Further optimization is that the mounting hole passes through the bottom section of the guide column, and a fixing plug is provided at the bottom of the mounting hole to abut against the bottom end of the return spring.
[0013] Further optimization, after the lower mold base and the backing plate are separated, the guide sleeve is away from the retaining ring, and the return spring and the push rod lift the retaining ring to a high position. At this time, the retaining sleeve is higher than the top end of the boss.
[0014] The technical effect of the utility model is that a positioning component is provided between the lower die base and the pad, and the positioning component mainly includes a guide sleeve, a retaining ring and a boss, the guide sleeve is located on the lower die base, the boss is located on the pad, the retaining ring is sleeved on the boss, and the retaining ring can form elastic sliding along the boss, when the lower die base is installed, the guide sleeve is sleeved on the retaining ring, so that relative sliding is formed between the guide sleeve, the retaining ring and the boss, and the retaining ring always keeps out of contact with the bottom of the boss or the surface of the pad, that is, the cooperation between the guide sleeve, the retaining ring and the boss enables accurate positioning between the lower die base and the pad, and during the positioning process, impact deformation of the positioning component between the lower die base and the pad can be avoided to ensure that the mold can always maintain accurate positioning when it is disassembled and assembled multiple times during maintenance, and when multiple lower die bases are positioned on the same pad at the same time, the relative positions between adjacent lower die bases can also be located, which is suitable for positioning between lower die bases of split molds. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a structural diagram of the utility model when the lower die base and the backing plate are separated;
[0016] Figure 2 This is a structural diagram of the lower die base and the backing plate in the utility model when the die is closed;
[0017] Figure 3 It is a top view of the structure of the utility model when it has double lower die seats.
[0018] In the figure: 1. lower die base; 2. pad; 3. first positioning hole; 4. guide sleeve; 5. guide column; 51. top section; 52. bottom section; 53. stepped surface; 54. axial through hole; 6. retaining ring; 7. second positioning hole; 8. knock-out through hole; 9. mounting hole; 10. reset spring; 11. ejector rod; 12. fixing plug. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.
[0020] In this embodiment, Figure 1 and 2 As shown, it includes a lower die base 1 and a pad 2 distributed up and down, and at least one positioning component is provided between the lower die base 1 and the pad 2. The positioning component includes a first positioning hole 3 opened on the lower die base 1, and a guide sleeve 4 is sleeved in the first positioning hole 3. The guide sleeve 4 is clamped in the first positioning hole 3 so that the guide sleeve 4 moves with the lower die base 1. The first positioning hole 3 runs through the upper and lower end surfaces of the lower die base 1 to facilitate the loading and unloading of the guide sleeve 4.
[0021] The positioning assembly also includes a boss arranged on the surface of the pad 2 facing the first positioning hole 3, and the outer wall of the boss is sleeved with a retaining ring 6 coaxial with the boss. The retaining ring 6 is composed of a cylindrical axial sleeve with openings at both ends and a ball located thereon. The axial sleeve is directly sleeved on the boss so that the retaining ring 6 can slide axially relative to the boss.
[0022] The positioning assembly also includes a second positioning hole 7 opened on the pad 2 and corresponding to the first positioning hole 3. A guide column 5 is arranged in the second positioning hole 7. The guide column 5 includes a bottom section 52 and a top section 51. The bottom section 52 of the guide column 5 is installed in the second positioning hole 7, and the top section 51 of the guide column 5 extends and is higher than the second positioning hole 7 to form a convex column.
[0023] The outer diameter of the bottom section 52 of the guide column 5 is greater than that of the top section 51 , so that a step surface 53 is formed between the bottom section 52 and the top section 51 , that is, the guide column 5 is a variable diameter cylinder, and a horizontal step surface 53 is provided between the bottom section 52 and the boss.
[0024] The guide column 5 is provided with an axial through hole 54, which passes through the boss and the bottom section 52. A fastener, such as a bolt or a screw, is provided in the axial through hole 54. A threaded blind hole is provided on the bottom surface of the second positioning hole 7, so that the guide column 5 is fixedly connected to the second positioning hole 7 by the fastener to ensure the stable installation of the guide column 5.
[0025] When the lower die base 1 is molded relative to the pad 2, the guide sleeve 4 can slide axially along the retaining ring 6 relative to the outer periphery of the retaining ring 6, and the retaining ring 6 can slide along the axis of the boss relative to the boss. The lower die base 1 together with the guide sleeve 4 slides axially along the retaining ring 6 and relative to the retaining ring 6, and the retaining ring 6 slides axially along the boss and relative to the boss, that is, relative sliding can be formed among the guide sleeve 4, the retaining ring 6 and the boss; when the lower die base 1 and the pad 2 are separated, the guide sleeve 4 is away from the retaining ring 6, and a certain distance is maintained between the bottom of the retaining ring 6 and the bottom of the boss or the surface of the pad 2, that is, a certain distance is maintained between the bottom of the retaining ring 6 and the horizontal step surface 53, and an elastic component is provided between the bottom of the retaining ring 6 and the boss, so that an elastic buffer is formed when the retaining ring 6 and the boss slide, that is, a certain distance is always maintained between the bottom of the retaining ring 6 and the surface of the pad 2.
[0026] Specifically, the elastic component includes a mounting hole 9 which is opened on the stepped surface 53 and is coaxial with the boss. A push rod 11 and a return spring 10 are installed in the mounting hole 9 from top to bottom. The bottom surface of the retaining ring 6 faces the stepped surface 53 of the guide column 5. The top end of the push rod 11 extends out of the mounting hole 9 and abuts against the bottom surface of the retaining ring 6. The bottom end of the push rod 11 abuts against one end of the return spring 10, so that the top end of the push rod 11 always abuts against the bottom surface of the retaining ring 6 under the action of the return spring 10. When the lower die seat 1 and the pad 2 are separated, the guide sleeve 4 moves away from the boss with the lower die seat 1, and the retaining ring 6 on the boss is higher than the boss under the action of the return spring 10. That is, the return spring 10 lifts the retaining ring 6 to a high position, so that a certain distance is formed between the bottom of the retaining ring 6 and the stepped surface 53, and the bottom of the retaining ring 6 is kept in a non-contact state with the bottom of the boss or the surface of the pad 2, so as to avoid the guide sleeve 4 driving the retaining ring 6 to move down when the lower die seat 1 is installed. The convex column causes the retaining ring 6 and the convex column to be damaged, thereby affecting the positioning accuracy of the lower die base 1. When the lower die base 1 and the pad 2 are closed, the guide sleeve 4 is sleeved to the outer periphery of the retaining ring 6, and the guide sleeve 4 moves down along the balls on the outer periphery of the retaining ring 6. At this time, the guide sleeve 4 and the balls of the retaining ring 6 form a rolling pattern, and at the same time drive the retaining ring 6 to move down, and the retaining ring 6 moves down along the convex column, and the balls on the inner periphery of the retaining ring 6 and the convex column form a relative sliding. Due to the lifting effect of the reset spring 10, the retaining ring 6 will not have a hard collision with the surface of the pad 2 or the stepped surface 53 of the guide column 5 after moving down, that is, the relative position of the lower die base 1 and the pad 2 is guaranteed by the relative sliding cooperation between the guide sleeve 4, the retaining ring 6 and the convex column. When there are multiple lower die bases 1, when multiple lower die bases 1 are positioned on the same pad 2 at the same time, each lower die base 1 is positioned on the pad 2 through the positioning assembly, which can also ensure the relative position between the multiple lower die bases 1.
[0027] In this embodiment, there are four positioning components, which are located at the four corners between the lower die base 1 and the backing plate 2, so that the guidance is more precise and stable when the lower die base 1 and the backing plate 2 are combined.
[0028] A knock-out through hole 8 communicating with the second positioning hole 7 is provided at the bottom of the backing plate 2 to facilitate pushing the guide post 5 out of the second positioning hole 7 from the bottom to prevent the guide post 5 from being stuck in the second positioning hole 7 .
[0029] Furthermore, the mounting hole 9 passes through the bottom section 52 of the guide column 5 , and a fixing plug 12 , such as a screw plug, is provided at the bottom of the mounting hole 9 to abut against the bottom end of the reset spring 10 to seal and position the reset spring 10 .
[0030] It should be noted that when the guide sleeve 4 is installed in the first positioning hole 3, the bottom surface of the guide sleeve 4 is not flush with the lower end surface of the first positioning hole 3, and the bottom surface of the guide sleeve 4 is retracted into the first positioning hole 3 by a certain distance, and the bottom surface of the guide sleeve 4 is kept flush with the bottom surface of the retaining ring 6, so that when the mold is closed and the return spring 10 is compressed to the limit, the guide sleeve 4 always keeps out of contact with the surface of the pad 2 or the stepped surface 53 of the guide column 5, and the same is true for the retaining ring 6.
[0031] The present utility model is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all those having the same or similar technical solutions as the present application fall within the protection scope of the present utility model.
Claims
1. A mold base positioning structure, characterized in that: The invention comprises a lower die base (1), a pad (2) and at least one positioning component located between the lower die base (1) and the pad (2), wherein the positioning component comprises a first positioning hole (3) opened on the lower die base (1), a guide sleeve (4) is sleeved in the first positioning hole (3), and the guide sleeve (4) moves with the lower die base (1), and the positioning component also comprises a boss arranged on the surface of the pad (2) facing the first positioning hole (3), a retaining ring (6) coaxial with the boss is sleeved on the outer sleeve of the boss, the guide sleeve (4) can slide axially relative to the boss, and the retaining ring (6) can slide axially elastically relative to the boss, wherein the bottom of the retaining ring (6) always maintains a non-contact state with the bottom of the boss or the surface of the pad (2).
2. A mold base positioning structure according to claim 1, characterized in that: There are four positioning components, which are located at four corners between the lower die base (1) and the backing plate (2).
3. A mold base positioning structure according to claim 2, characterized in that: The backing plate (2) is provided with a second positioning hole (7) corresponding to the first positioning hole (3); a guide column (5) is arranged in the second positioning hole (7); a bottom section (52) of the guide column (5) is installed in the second positioning hole (7); and a top section (51) of the guide column (5) extends and is higher than the second positioning hole (7) to form a convex column.
4. A mold base positioning structure according to claim 3, characterized in that: The outer diameter of the bottom section (52) of the guide column (5) is larger than that of the top section (51), so that a step surface (53) is formed between the bottom section (52) and the top section (51).
5. A mold base positioning structure according to claim 4, characterized in that: The guide column (5) is provided with an axial through hole (54), and a fastener is provided in the axial through hole (54) so that the guide column (5) is fixedly connected to the second positioning hole (7).
6. A mold base positioning structure according to claim 3, characterized in that: The bottom of the pad (2) is provided with a knock-out through hole (8) which is in communication with the second positioning hole (7).
7. The mold base positioning structure according to claim 1, characterized in that: An elastic component is provided between the bottom of the retaining ring (6) and the convex column, so that an elastic buffer is formed when the retaining ring (6) and the convex column slide.
8. A mold base positioning structure according to claim 7, characterized in that: The elastic component comprises a mounting hole (9) which is opened on the stepped surface (53) and is coaxial with the convex column. A push rod (11) and a return spring (10) are sequentially mounted in the mounting hole (9) from top to bottom. The bottom surface of the retaining ring (6) faces the stepped surface (53) of the guide column (5). The top end of the push rod (11) extends out of the mounting hole (9) and abuts against the bottom surface of the retaining ring (6). The bottom end of the push rod (11) abuts against one end of the return spring (10), so that the top end of the push rod (11) always abuts against the bottom surface of the retaining ring (6) under the action of the return spring (10).
9. A mold base positioning structure according to claim 8, characterized in that: The mounting hole (9) passes through the bottom section (52) of the guide column (5), and a fixing plug (12) is provided at the bottom of the mounting hole (9) to abut against the bottom end of the return spring (10).
10. A mold base positioning structure according to claim 9, characterized in that: When the lower mold base (1) and the backing plate (2) are separated, the guide sleeve (4) moves away from the retaining ring (6), and the return spring (10) and the push rod (11) lift the retaining ring (6) to a high position, at which time the retaining sleeve is higher than the top end of the protruding column.