Z-fold shaping die for narrow and long part
By designing a Z-fold forming mold for narrow and long parts, and using a forming punch to press grooves in the bending area of the narrow and long parts, the problem of bending deformation during the Z-folding process of narrow and long parts is solved, and high-precision flatness control is achieved.
Patent Information
- Application Number
- CN202423323842.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Narrow and long parts are prone to bending deformation during Z-bending, making it difficult to guarantee flatness requirements.
Design a Z-fold forming die for narrow and long parts, including an upper die and a lower die. The lower die is equipped with a detachable forming punch. The forming punch presses a groove in the area to be bent on the narrow and long part. The depth and position of the groove are designed reasonably to balance the extrusion deformation.
With a well-designed groove, the flatness of the processed product can reach 0.3 mm, with no obvious bending, thus ensuring product quality.
Smart Images
Figure CN223888807U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of shaping molds, specifically to a Z-fold shaping mold for narrow and long parts. Background Technology
[0002] A narrow, elongated component on a data storage device needs to have its two sides bent into a Z-shape, with several CSK chamfered holes on the Z-shaped edges. Due to the product's narrowness and length, the CSK extrusion area is small. The product undergoes a standard bending process (M01 punching → M02 forming → M03 compound die → M04 deburring → M05 bending, see...). Figure 6 After processing and shaping, bending deformation will occur, and the two ends of the product will be obviously arched, making it difficult to guarantee the flatness requirements.
[0003] Therefore, how to overcome the shortcomings of the existing technology mentioned above has become the subject of this utility model. Utility Model Content
[0004] The purpose of this invention is to provide a Z-fold shaping mold for narrow and long parts.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A narrow and long Z-fold forming die is used for forming narrow and long parts before Z-shaped bending. It includes an upper die and a lower die. The upper surface of the lower die is detachably provided with an insert, and the upper surface of the insert is provided with a forming punch with a triangular cross-section.
[0007] The forming punch is a component used to press grooves in the bending area of a narrow and long piece when the upper and lower dies are closed.
[0008] The vertical height of the forming punch is less than the thickness of the narrow and long piece, thus the depth of the groove is less than the thickness of the narrow and long piece.
[0009] The forming punch extends along the width direction of the narrow and long piece and is collinear with the center of the chamfering hole in the area to be bent. The front end of the forming punch extends to the inside of the chamfering hole, and the rear end of the forming punch extends to the non-bending area in the middle of the narrow and long piece.
[0010] Preferably, the distance between the rear end of the forming punch and the vertical surface of the bent narrow piece is three times the thickness of the narrow piece.
[0011] Preferably, the vertical height of the forming punch is 1 / 3 times the thickness of the narrow and long piece, and the depth of the groove is 1 / 3 times the thickness of the narrow and long piece.
[0012] Preferably, the top of the shaping punch is rounded, and the apex angle of the triangular cross-section of the shaping punch is 120°.
[0013] Preferably, the upper mold includes an upper mold base, an upper pad, an upper clamping plate, and an upper stripping plate arranged sequentially from top to bottom;
[0014] The upper pad, the upper mold base, and the upper clamping plate are detachably connected, and the upper release plate is located below the upper clamping plate and slides vertically with the upper mold base.
[0015] Preferably, the lower mold includes a lower mold base, a lower pad, and a lower template that are detachably connected from bottom to top. The lower template has a through-hole for installing the insert, and the insert is movably engaged in the mounting hole.
[0016] More preferably, the cross-sections of the insert and the mounting hole are set to square or irregular shapes, constituting a limit on the insert in the circumferential direction.
[0017] More preferably, a limiting block is integrally formed on one side of the bottom of the insert, and a limiting groove is formed on one side of the bottom of the mounting hole corresponding to the limiting block. The limiting groove engages with the limiting block to limit the insert in the vertical direction.
[0018] The working principle and advantages of this utility model are as follows:
[0019] This invention utilizes a forming mold to press a groove into the bending area of a narrow and long part. One end of the groove is located inside the CSK chamfer hole and is collinear with the center of the chamfer hole, while the other end extends to the non-bending area in the middle of the narrow and long part. This can balance the extrusion deformation. After multiple mold trials, the flatness of the processed product can reach 0.3, with no bending phenomenon.
[0020] The groove depth of the wire groove processed by the forming punch of this utility model is about 1 / 3 of the material thickness of the narrow and long piece, and the distance from the other end of the wire groove to the vertical surface of the narrow and long piece after bending is about 3 times the material thickness of the narrow and long piece. The forming effect of the wire groove is the best at this size. Attached Figure Description
[0021] Appendix Figure 1 This is an overall front view of an embodiment of the present utility model;
[0022] Appendix Figure 2 This is a partial front view of an embodiment of the present utility model;
[0023] Appendix Figure 3 This utility model Figure 2 Enlarged view of the structure of section A in the middle;
[0024] Appendix Figure 4 A back view of the narrow and long piece after the groove is processed and bent according to an embodiment of this utility model;
[0025] Appendix Figure 5A side view of a narrow, elongated piece after the groove has been processed and bent according to an embodiment of this utility model;
[0026] Appendix Figure 6 This is a flowchart of the steps involved in processing narrow and long parts using conventional bending technology.
[0027] In the attached diagrams: 1. Upper die; 11. Upper die base; 12. Upper backing plate; 13. Upper clamping plate; 14. Upper stripper plate; 15. Long screw; 2. Lower die; 21. Lower die base; 22. Lower backing plate; 23. Lower template; 231. Mounting hole; 232. Limiting groove; 3. Insert; 4. Limiting block; 5. Shaping punch;
[0028] 100 Narrow and long parts; 110 Area to be bent; 120 Non-bending area; 130 Facade; 200 Cable trough; 300 Chamfered holes. Detailed Implementation
[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0030] Example: The present invention will be clearly described below with illustrations and detailed description. Any person skilled in the art who understands the examples of the present invention can make changes and modifications based on the technology taught in the present invention without departing from the spirit and scope of the present invention.
[0031] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the scope of this work. Singular forms such as “a,” “this,” “this,” “the,” and “the” as used herein also include plural forms.
[0032] The terms "first," "second," etc., used in this article do not specifically refer to order or sequence, nor are they intended to limit this case; they are merely used to distinguish components or operations described using the same technical terms.
[0033] The terms "connection" or "positioning" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or moving with each other.
[0034] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.
[0035] Unless otherwise specified, the terms used herein generally have their ordinary meaning in the context of the art, the subject matter, and the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the case.
[0036] The terms “front,” “back,” “up,” “down,” “left,” and “right” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not intended to limit the specific direction of the protection scheme or its actual implementation.
[0037] See appendix Figure 1-3 As shown, a narrow and long Z-fold forming mold is used for shaping narrow and long parts 100Z-shaped before bending, including an upper mold 1 and a lower mold 2.
[0038] The upper mold 1 includes an upper mold base 11, an upper pad 12, an upper clamping plate 13, and an upper release plate 14 arranged sequentially from top to bottom; the upper pad 12, the upper mold base 11, and the upper clamping plate 13 are detachably connected by screws, and the upper release plate 14 is located below the upper clamping plate 13 and slides vertically and vertically with the T-shaped hole on the upper mold base 11 through a long screw 15.
[0039] The lower mold 2 includes a lower mold base 21, a lower pad 22, and a lower template 23, which are detachably connected from bottom to top by screws. An insert 3 is detachably provided on the upper surface of the lower mold 2.
[0040] In this embodiment, the lower template 23 has a through-hole 231 for installing the insert 3, and the insert 3 is movably engaged in the mounting hole 231. The insert 3 and the mounting hole 231 have square or irregular cross-sections, which limit the insert 3 in the circumferential direction, preventing the insert 3 from moving horizontally or rotating.
[0041] To facilitate the installation and removal of the insert 3, a limiting block 4 is integrally formed on one side of the bottom of the insert 3. A limiting groove 232 is formed on one side of the bottom of the mounting hole 231 corresponding to the limiting block 4. The limiting groove 232 engages with the limiting block 4 to limit the insert 3 in the vertical direction. The insert 3 cannot move upward due to the limiting groove 232, nor can it move downward due to the lower pad 22 below. When replacing the insert 3, only the lower template 23 needs to be removed to take out and insert the insert 3.
[0042] The upper surface of the insert 3 is provided with a triangular-shaped forming punch 5. The forming punch 5 is used to press a groove 200 in the bending area 110 of the narrow and long piece 100 when the upper mold 1 and the lower mold 2 are closed. That is, when the mold is closed, the narrow and long piece 100 is pressed against the forming punch 5, and the forming punch 5 presses out the groove 200 on the surface of the narrow and long piece 100. The groove 200 is located on the back of the narrow and long piece 100, that is, the side that is finally bent to form a groove. It does not affect the appearance and has a good forming effect.
[0043] In this embodiment, the top of the shaping punch 5 is rounded, and the apex angle of the triangular cross section of the shaping punch is 120° to prevent the sharp tip from cracking the narrow and long piece 100.
[0044] In this embodiment, the vertical height of the forming punch 5 is less than the thickness of the narrow and long piece 100, resulting in a groove 200 with a depth less than the thickness of the narrow and long piece 100. Specifically, the vertical height of the forming punch 5 is approximately one-third the thickness of the narrow and long piece 100, making the depth of the groove 200 approximately one-third the thickness of the narrow and long piece 100. This groove 200 depth ensures both the strength of the narrow and long piece 100 and increases the appropriate extrusion area, achieving a better forming effect. A schematic diagram of the narrow and long piece 100 with this groove 200 after bending is shown below. Figure 4-5 .
[0045] The forming punch 5 extends along the width direction of the narrow and long piece 100 and is collinear with the center of the chamfered hole 300 on the bending area 110. The front end of the forming punch 5 extends to the inside of the chamfered hole 300, and the rear end of the forming punch 5 extends to the non-bending area 120 in the middle of the narrow and long piece 100. Specifically, the line distance from the rear end of the forming punch 5 to the bent vertical surface 130 of the narrow and long piece 100 is about three times the material thickness of the narrow and long piece 100. The forming punch 5 designed in this way can process a groove 200 with the same depth and length. The groove 200 of this size can balance the extrusion deformation caused by bending. After multiple trial molding verifications, the flatness of the processed product can reach 0.3, with no bending phenomenon.
[0046] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.
Claims
1. A narrow and long Z-fold forming mold, used for shaping narrow and long parts before Z-shaped bending, characterized in that: It includes an upper die and a lower die. The upper surface of the lower die is detachably provided with an insert, and the upper surface of the insert is provided with a shaping punch with a triangular cross-section. The forming punch is a component used to press grooves in the bending area of a narrow and long piece when the upper and lower dies are closed. The vertical height of the forming punch is less than the thickness of the narrow and long piece, thus the depth of the groove is less than the thickness of the narrow and long piece. The forming punch extends along the width direction of the narrow and long piece and is collinear with the center of the chamfering hole in the area to be bent. The front end of the forming punch extends to the inside of the chamfering hole, and the rear end of the forming punch extends to the non-bending area in the middle of the narrow and long piece.
2. The narrow and long Z-fold forming mold according to claim 1, characterized in that: The distance between the rear end of the forming punch and the vertical surface of the bent narrow piece is three times the thickness of the narrow piece.
3. The narrow and long Z-fold forming mold according to claim 1, characterized in that: The vertical height of the forming punch is 1 / 3 times the thickness of the narrow and long piece, and the depth of the groove is 1 / 3 times the thickness of the narrow and long piece.
4. The narrow and long Z-fold forming mold according to claim 1, characterized in that: The top of the shaping punch is rounded, and the apex angle of the triangular cross-section of the shaping punch is 120°.
5. The narrow and long Z-fold forming mold according to claim 1, characterized in that: The upper mold includes an upper mold base, an upper pad, an upper clamping plate, and an upper stripping plate arranged sequentially from top to bottom; The upper pad, the upper mold base, and the upper clamping plate are detachably connected, and the upper release plate is located below the upper clamping plate and slides vertically with the upper mold base.
6. The narrow and long Z-fold forming mold according to claim 1, characterized in that: The lower mold includes a lower mold base, a lower pad, and a lower template that are detachably connected from bottom to top. The lower template has a through-hole for installing the insert, and the insert is movably engaged in the mounting hole.
7. A narrow and long Z-fold forming mold according to claim 6, characterized in that: The insert and the mounting hole have square or irregular cross-sections, which constitute the limiting position of the insert in the circumferential direction.
8. A narrow and long Z-fold forming mold according to claim 6, characterized in that: A limiting block is integrally formed on one side of the bottom of the insert. A limiting groove is formed on one side of the bottom of the mounting hole corresponding to the limiting block. The limiting groove engages with the limiting block to limit the insert in the vertical direction.