Salient point array structure for improving flatness of product
By designing the symmetrical uniformly distributed convex array structure and guide limiting system of the upper and lower mold seats, the distortion and deformation problems caused by internal stress after product tensile is solved, and the planarity and production efficiency are improved.
Patent Information
- Application Number
- CN202420771480.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-15
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-15
AI Technical Summary
The plastic deformation caused by external forces during product stretching and distortion caused by internal stress affect the plane degree. The prior art increases production process and costs through annealing treatment, which cannot be effectively solved.
A convex array structure including upper mold seat and lower mold seat is designed. The product is pressed into the mold when the mold is closed by a symmetrical uniform array of upper mold and lower mold convex points, releasing and eliminating internal stress, and combining with external guide The sleeves and outer guide columns achieve guidance and limiting to ensure the stability of the plastic surgery process.
Effectively release and eliminate internal stress of the product, improve the problem of distortion and deformation affecting flatness, improve product quality and production efficiency, and reduce production costs and processes.
Smart Images
Figure CN222153620U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of pump product processing, in particular to a convex point array structure for improving the flatness of products. Background Art
[0002] During the stretching process, the product is affected by external forces and undergoes plastic deformation. When the external forces are removed, the product will be twisted and deformed under the action of internal stress, affecting the flatness. At this time, the flatness of the product is generally corrected through the post-process shaping process. If the shaping process cannot effectively release and eliminate the internal stress of the product, then the product flatness problem cannot be solved.
[0003] In this case, it is possible to consider annealing the semi-finished product after stretching to eliminate internal stress, and then use the shaping process to correct the flatness of the product to improve the problem of poor flatness. However, this method will increase the production process and cost, reduce production efficiency, and is not ideal.
[0004] Terminology explanation:
[0005] Internal stress: also known as residual stress, refers to the stress that remains inside the workpiece after the external load is removed. Residual stress is caused by uneven volume changes in the internal structure of the metal. A workpiece with internal stress is in an unstable state, and its internal structure has a strong tendency to return to a stable state without internal stress. This causes the shape of the workpiece to gradually change, such as distortion, deformation, etc., thereby losing its original precision.
[0006] Annealing: Annealing is a metal material processing method that changes the crystal structure and properties of the material by heating the material to a high temperature and then slowly cooling it. Annealing can make the metal material have better plasticity, strength and toughness, and can eliminate the stress inside the metal material. Utility Model Content
[0007] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a convex dot array structure for improving the flatness of a product. During the stretching process, the product is affected by external forces and undergoes plastic deformation. When the external forces are removed, the product is twisted and deformed under the action of internal stress, which affects the flatness. Using components with poor flatness will directly affect the assembly, performance and life of the entire finished product. The utility model can effectively release and eliminate the internal stress of the product. It improves the undesirable phenomenon that the product is twisted and deformed under the action of internal stress, which affects the flatness. It improves product quality and production quality stability, reduces stamping production processes and production costs, and improves production efficiency.
[0008] The purpose of the utility model is achieved through the following technical solution: This convex dot array structure for improving the flatness of the product includes:
[0009] The upper die base is arranged above the lower die base and moves relative to the lower die base in opening and closing;
[0010] An upper mold plate is fixed to the upper mold base, and a plurality of upper mold protrusions are arranged on the surface of the upper mold plate, i.e., the upper mold plane; and
[0011] The lower mold plate is fixed on the lower mold base and is used to position and place the product. A plurality of lower mold convex points are arranged on the surface of the lower mold plate, i.e., the lower mold plane;
[0012] When the upper die base is closed with the lower die base, the upper die plane presses the product against the lower die plane, and the product is pressed in through the upper die convex points and the lower die convex points, thereby releasing and eliminating the internal stress of the product.
[0013] As a further technical solution, the position of the upper die protrusion on the upper die plane is symmetrical with the position of the lower die protrusion on the lower die plane.
[0014] As a further technical solution, the upper die convex points are evenly distributed along the circumferential direction of the upper die plane to form an array; the lower die convex points are evenly distributed along the circumferential direction of the lower die plane to form an array.
[0015] As a further technical solution, the upper die convex point and the lower die convex point are both regular prisms with an upper bottom surface smaller than a lower bottom surface.
[0016] As a further technical solution, an avoidance groove for accommodating products is opened in the center of the upper template.
[0017] As a further technical solution, the upper die base is provided with an outer guide sleeve for cooperating with an outer guide post fixed on the lower die base to achieve opening and closing mold guidance.
[0018] As a further technical solution, an upper die outer limit is installed at the lower part of the upper die base, and a lower die outer limit is installed at the upper part of the lower die base at a position corresponding to the upper die outer limit. The upper die outer limit is used to cooperate with the lower die outer limit to limit the downward stamping stroke of the upper die plate.
[0019] The beneficial effects of the utility model are:
[0020] 1. Protruding points are set on the upper and lower mold surfaces to better press the product when closing the mold, release and eliminate the internal stress of the product;
[0021] 2. The convex points are a positive cone structure with an array of symmetrical protrusions in the upper and lower parts, which can make the product bear the force symmetrically during shaping;
[0022] 3. The top plane of the convex point is smaller than the bottom plane, the corners of the convex point are sharp, and the convex point adopts a positive prism, which is conducive to the removal of the product after shaping, and will not cause secondary deformation due to product jamming, effectively improving the undesirable phenomenon that the product is twisted and deformed under the action of internal stress and affects the flatness;
[0023] 4. When the upper and lower molds are closed, they are guided by the outer guide sleeve and the outer guide column. At the same time, the outer limit of the upper mold and the outer limit of the lower mold play a limiting role, limiting the downward stamping stroke of the upper mold plate, ensuring the stability of the product during stamping, preventing the product from being excessively thinned or not pressed into place, and preventing the mold from being empty when there is no product in the mold, causing damage to the upper and lower mold convex points. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a structural schematic diagram of the utility model.
[0025] Figure 2 for Figure 1 A partial enlarged schematic diagram of area A in the middle.
[0026] Figure 3 It is a structural schematic diagram of the upper template in the utility model.
[0027] Explanation of the accompanying drawings: upper die base 01, outer guide sleeve 02, upper mold plate 03, product 04, lower mold plate 05, outer guide pin 06, lower die base 07, upper die outer limit 08, lower die outer limit 09, upper die convex point 10, upper die plane 11, lower die convex point 12, lower die plane 13, avoidance groove 14. DETAILED DESCRIPTION
[0028] The utility model will be described in detail below with reference to the accompanying drawings:
[0029] Example: As shown in the attached Figures 1 to 3 As shown, the convex dot array structure for improving the flatness of the product includes an upper mold base 01, an outer guide sleeve 02, an upper mold plate 03, a product 04, a lower mold plate 05, an outer guide pin 06, a lower mold base 07, an upper mold outer limit 08, a lower mold outer limit 09, an upper mold convex dot 10, an upper mold plane 11, a lower mold convex dot 12, a lower mold plane 13 and an avoidance groove 14.
[0030] Reference Figure 1 The upper die base 01 is arranged directly above the lower die base 07, and moves relative to the lower die base 07 when the punch press is driven to open and close the die. The upper die plate 03 is fixedly connected to the lower part of the upper die base 01 by bolts, and a plurality of upper die convex points 10 are arranged on the lower surface of the upper die plate 03, i.e., the upper die plane 11. The lower die plate 05 is fixedly connected to the upper surface of the lower die base 07 by bolts, and the lower die plate 05 is used to locate and place the product 04, and a plurality of lower die convex points 12 are arranged on the upper surface of the lower die plate 05, i.e., the lower die plane 13.
[0031] Preferably, if Figure 2 As shown, the position of the upper die protrusion 10 on the upper die plane 11 is symmetrical with the position of the lower die protrusion 12 on the lower die plane 13, so that the product 04 can be subjected to symmetrical force during shaping.
[0032] like Figure 2 , 3 As shown, the upper die convex points 10 are evenly distributed along the circumferential direction of the upper die plane 11 and form an array. The lower die convex points 12 are evenly distributed along the circumferential direction of the lower die plane 13 and also form an array, which can better press the product 04 when the mold is closed, and release and eliminate the internal stress of the product 04. The upper die convex points 10 and the lower die convex points 12 are both right prisms with the upper bottom surface smaller than the lower bottom surface, and the corners of the convex points are sharp, which is conducive to the removal of the product after shaping, and will not cause secondary deformation due to product jamming, effectively improving the undesirable phenomenon that the product is twisted and deformed under the action of internal stress and affects the flatness.
[0033] Preferably, refer to the attached Figure 1 , 3 A avoidance groove 14 capable of accommodating the product 04 is opened in the center of the upper template 03.
[0034] like Figure 1 , 2 As shown, when the upper mold base 01 and the lower mold base 07 are closed, the upper mold plane 11 presses the product 04 against the lower mold plane 13, and presses the product 04 into the upper mold convex point 10 and the lower mold convex point 12, thereby releasing and eliminating the internal stress of the product 04.
[0035] Preferably, an outer guide sleeve 02 is installed on the upper die seat 01, which can cooperate with the outer guide pin 06 fixed on the lower die seat 07 to realize the opening and closing of the die guide. The upper die outer limit 08 is installed at the lower part of the upper die seat 01, and the lower die outer limit 09 is installed at the upper part of the lower die seat 07 at a position corresponding to the upper die outer limit 08. The upper die outer limit 08 can cooperate with the lower die outer limit 09 to limit the downward stamping stroke of the upper die plate 03.
[0036] The working process of this utility model:
[0037] When the upper worktable of the pneumatic punch press drives the upper die part downward, the lower die outer guide pin 06 will first be inserted into the upper die outer guide sleeve 02, playing a role in the precise positioning of the upper and lower dies. Then, the upper die part continues to move downward, and when the punch press slide moves to the bottom dead center, the upper die plate 03 and the lower die plate 05 will tightly press the product 04 to correct the flatness of the product 04. Then the upper die part retreats, the upper die outer guide sleeve 02 disengages the lower die outer guide pin 06, and the punch press slide continues to move to the top dead center, completing a stretching and shaping production action.
[0038] The main function of the upper die outer limit 08 and the lower die outer limit 09 is to limit the stamping stroke, to ensure the consistency of the bottom dead point position of the punch press during each stamping process, to ensure the stability of the product 04 during stamping, to prevent the product 04 from being excessively thinned or not pressed into place, and to prevent the upper die convex point 10 and the lower die convex point 12 from being damaged due to empty punching when there is no product 04 in the die.
[0039] The upper die convex point 10 and the lower die convex point 12 are symmetrical array convex positive prism structures. During shaping, the force is symmetrical, the top plane of the convex point becomes smaller, and the corners are sharp, which is conducive to better pressing the upper die convex point 10 and the lower die convex point 12 into the product, releasing and eliminating the internal stress of the product 04. The positive prism angle is conducive to the removal of the product 04 after shaping, and will not cause secondary deformation due to the jamming of the product 04.
[0040] After the upper mold plate 03 and the lower mold plate 05 are closed, the upper mold plane 11 and the lower mold plane 13 without protrusions will not damage the product, and while ensuring the strength of the product 04, the product 04 is tightly flattened, which plays a role in correcting the flatness.
[0041] The use of a grinding process to process the bump array structure can facilitate processing while also ensuring the processing accuracy of the upper die bumps 10 and the lower die bumps 12 as well as the flatness and smoothness of the upper die plane and the lower die plane.
[0042] The convex dot array structure is used. The upper die convex dot 10 and the lower die convex dot 12 are symmetrical array convex positive cone structures. During shaping, the force is symmetrical, the top plane of the convex dot becomes smaller, and the corners are sharp corners, which is conducive to better pressing the upper die convex dot 10 and the lower die convex dot 12 into the product, releasing and eliminating the internal stress of the product 04. It effectively improves the undesirable phenomenon that the product is twisted and deformed under the action of internal stress and affects the flatness. It improves product quality and production quality stability, reduces stamping production processes and production costs, and improves production efficiency.
[0043] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and the concept of the utility model should fall within the protection scope of the claims attached to the utility model.
Claims
1. A bump array structure for improving product flatness, characterized in that: include: The upper die base (01) is arranged above the lower die base (07) and moves relative to the lower die base (07) to open and close the mold; An upper mold plate (03) is fixed to an upper mold base (01), and a plurality of upper mold protrusions (10) are arranged on the surface of the upper mold plate (03), i.e., an upper mold plane (11); and The lower mold plate (05) is fixed on the lower mold base (07) and is used to position and place the product (04). A plurality of lower mold protrusions (12) are arranged on the surface of the lower mold plate (05), i.e., the lower mold plane (13); When the upper mold base (01) and the lower mold base (07) are closed, the upper mold plane (11) presses the product (04) against the lower mold plane (13), and presses the product (04) into the upper mold convex point (10) and the lower mold convex point (12), thereby releasing and eliminating the internal stress of the product (04).
2. The bump array structure for improving product flatness according to claim 1, characterized in that: The position of the upper die convex point (10) on the upper die plane (11) is symmetrical to the position of the lower die convex point (12) on the lower die plane (13).
3. The bump array structure for improving product flatness according to claim 1, characterized in that: The upper die convex points (10) are evenly distributed along the circumferential direction of the upper die plane (11) to form an array; the lower die convex points (12) are evenly distributed along the circumferential direction of the lower die plane (13) to form an array.
4. The bump array structure for improving product planarity according to claim 1, characterized in that: The upper die convex point (10) and the lower die convex point (12) are both regular prisms with an upper bottom surface smaller than a lower bottom surface.
5. The bump array structure for improving product planarity according to claim 1, characterized in that: The center of the upper template (03) is provided with an avoidance groove (14) for accommodating the product (04).
6. The bump array structure for improving product flatness according to claim 1, characterized in that: The upper die seat (01) is provided with an outer guide sleeve (02) for cooperating with an outer guide post (06) fixed on the lower die seat (07) to realize the opening and closing of the die.
7. The bump array structure for improving product planarity according to claim 1, characterized in that: An upper die outer limiter (08) is installed at the lower part of the upper die seat (01), and a lower die outer limiter (09) is installed at the upper part of the lower die seat (07) at a position corresponding to the upper die outer limiter (08). The upper die outer limiter (08) is used to cooperate with the lower die outer limiter (09) to limit the downward stamping stroke of the upper die plate (03).