Die structure and method for forming sliding block
Through the improved slider forming mold structure, the molding problem of hardware stamping molds in complex structures and high-precision products is solved, and an efficient and stable production process is achieved, ensuring the dimensional accuracy and appearance quality of the product.
Patent Information
- Application Number
- CN202510951515.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-10
- Publication Date
- 2025-08-19
AI Technical Summary
When faced with products with complex structures and high precision requirements, existing hardware stamping molds have problems such as difficult forming, low production efficiency, poor stability, poor dimensional consistency, and easy mold traces and product deformation.
A slider forming mold structure is adopted, including upper mold seat, upper pad plate, slider installation components, top material mechanism and lower pad plate. Through precise cooperation between the slider and the mold parts, multiple processes are integrated to ensure the dimensional accuracy and stability of the product.
It improves the dimensional accuracy and stability of the product, reduces production cycle and cost, ensures the consistency of product quality and appearance quality, and adapts to special shape and size requirements.
Smart Images
Figure CN120502628A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of metal stamping dies, and in particular to a slider forming die structure and method for stretching products. The structure is suitable for a metal stamping forming process for special product structures. Background Art
[0002] In metal stamping dies, the slider is an important moving part. It can slide inside the mold along a specific trajectory and direction. By cooperating with other parts of the mold (such as the die, punch, ejection mechanism, etc.), it can realize the forming and stripping operations of specific parts of the workpiece to meet the requirements of complex product structure and dimensional accuracy.
[0003] Currently, in the design and production of metal stamping dies, rising market demand has led to more complex product structures and increased dimensional precision requirements. The unique shapes of many products have greatly increased the difficulty of forming. Traditional die structures present significant drawbacks in this regard: numerous stamping steps, low production efficiency, and the tendency to make errors; complex die structures lead to insufficient forming stability, poor dimensional consistency, and reduced yield rates; and product surfaces are prone to defects such as mold marks and wrinkles, which affect both appearance and performance. Therefore, there is an urgent need to develop new die structures that can optimize layout and process steps through innovative designs, thereby improving forming stability and addressing the efficiency, precision, stability, and quality issues of traditional die structures to meet the demands of modern production. Summary of the Invention
[0004] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a mold structure and method for slider molding, which improves the freedom of movement and flexibility of the slider in the mold, ensures that the special structure of the product can be molded according to the design requirements, and improves the consistency and stability of product quality.
[0005] The object of the present invention is to achieve the following technical solution: a slider forming die structure for stamping a front-end part formed by a front-end process, the die structure comprising: The upper die base is set above the lower die base and moves relative to the lower die base in opening and closing; The upper pad is fixed to the upper die base, the upper die forming block is embedded in the center of the upper pad, the upper die forming block is fixed to the upper die base, and the upper die shaping inner stripping plate is embedded in the center of the upper die forming block. The upper die shaping inner stripping plate is slidably connected to the upper die base, so that the upper die shaping inner stripping plate slides relative to the upper die forming block; A slider mounting assembly is mounted on the upper pad in a relatively slidable manner in a vertical direction, and a mounting slider is embedded in the slider mounting assembly; A push-up mechanism, one end of which is fixed to the upper die base, and the other end of which passes through the upper pad and pushes against the top of the slider, causing the slider to slide relative to the slider mounting assembly; and The lower pad is provided with a positioning plate on it for positioning and placing the previous process parts. The lower die base, the lower pad and the positioning plate are fixed in sequence. The center of the positioning plate is embedded in the lower die forming block, and the center of the lower die forming block is embedded in the lower die shaping block. The lower die forming block and the lower die shaping block are connected to the lower die base in a relatively sliding manner. When the upper die base and the lower die base are closed, the slider is pressed and matched with the upper die forming block, the lower die forming block and the positioning plate to stamp the previous process parts into the current process parts.
[0006] As a further technical solution, the slider mounting assembly includes a slider seat, a reset pad and a slider reset plate connected in sequence, a first horizontal end face is provided on the inner side of the lower part of the slider for contacting the third horizontal end face on the top of the positioning plate, a first inclined surface is provided on the outer side of the upper part of the slider for sliding along the fourth inclined surface on the inner side of the slider seat; a first vertical end face is provided on the inner side of the upper part of the slider for cooperating with the second vertical end face on the outer side of the upper mold forming block, a small protrusion is provided between the first horizontal end face and the first vertical end face of the slider, and the small protrusion is connected to the first vertical end face through a small inclined surface; a second inclined surface is provided on the outer side of the lower part of the slider for sliding along the third inclined surface on the slider reset plate until the first horizontal end face contacts the second horizontal end face on the top of the slider reset plate to realize slider stripping.
[0007] As a further technical solution, the first horizontal end face and the small protrusion are transitioned by a rounded corner. When the first horizontal end face contacts the third horizontal end face, the slider slides upward relative to the slider seat, and the rounded corner is used to guide the slider to slide toward the previous process part. At the same time, the slider and the previous process part are pressed together by the lifting mechanism.
[0008] As a further technical solution, an upper clamping plate is fixed to the lower surface of the upper pad, and the first upper mold contour screw passes through the upper pad and the upper clamping plate in sequence and is fixedly connected to the slider seat, and the head of the first upper mold contour screw extends into the upper mold seat; a second upper mold spring is passed through the upper pad and the upper clamping plate, one end of the second upper mold spring rests on the upper mold seat, and the other end rests on the slider seat; a first upper mold spring is arranged between the upper mold shaping inner stripping plate and the upper mold seat, one end of the second upper mold contour screw extends into the upper mold seat, and the other end passes through the upper mold seat and is fixed to the upper mold shaping inner stripping plate.
[0009] As a further technical solution, there are eight sliders, which are evenly distributed on the slider mounting assembly along the circumferential direction. When the upper mold base and the lower mold base are opened, there is a gap between adjacent sliders. At this time, the diameter φD1 enclosed by the first vertical end faces of each slider is larger than the first product size of the part in this process, which is convenient for material removal; when the upper mold base and the lower mold base are closed, the sliders are tightened to eliminate the gap. At this time, the diameter φD2 enclosed by the first vertical end faces of each slider is equal to the third product size of the part in this process.
[0010] As a further technical solution, a limit plate is fixed to the lower pad by a first lower die screw, which is used to limit the downward movement of the slider mounting assembly; one end of the first lower die contour screw extends into the lower die base and the other end passes through the lower die base and is fixed to the lower die shaping block, and a first lower die spring is arranged between the lower die shaping block and the lower die base, and the first lower die spring passes through the lower pad; one end of the second lower die contour screw extends into the lower die base and the other end passes through the lower die base and is fixed to the lower die forming block, and a second lower die spring is arranged between the lower die forming block and the lower die base, and the second lower die spring passes through the lower pad; when the upper die base and the lower die base are closed, the height of the upper end of the lower die shaping block is higher than the height of the lower end of the upper die forming block, so that the second product size of the previous process part is doubly protected by the inner diameter of the upper die forming block and the outer diameter of the lower die shaping block.
[0011] As a further technical solution, a step is provided at the inner diameter of the top of the positioning plate for positioning the fourth product size of the previous process part, and the design size of the inner diameter of the step is within the tolerance range of the fourth product size.
[0012] As a further technical solution, a number of upper mold outer guide sleeves are provided on the upper mold base, and lower mold outer guide pins are provided on the lower mold base corresponding to the upper mold outer guide sleeves. When the upper mold base and the lower mold base are closed, the lower mold outer guide pins are inserted into the upper mold outer guide sleeves to realize the positioning of the upper and lower molds.
[0013] A method for forming a slider, using the above-mentioned slider forming mold structure, comprises the following steps: S1. Before stamping, place the previous process part on the lower die. The fourth product size of the previous process part is positioned by the step on the positioning plate, the third product size of the previous process part is positioned by the outer diameter of the lower die forming block, and the second product size of the previous process part is positioned by the outer diameter of the lower die shaping block; S2. The pneumatic punch drives the upper die base downward to close the mold. The outer guide pin of the lower die is first inserted into the outer guide sleeve of the upper die to achieve the positioning of the upper and lower dies. S3. Subsequently, the upper die seat continues to descend, and the first horizontal end surface of the slider begins to contact the third horizontal end surface of the positioning plate. At this time, the elastic force provided by the ejection mechanism is less than the elastic force provided by the second upper die spring, causing the first inclined surface of the slider to slide along the fourth inclined surface of the slider seat. At the same time, the slider slides toward the preceding workpiece through the rounded corner and is pressed against the preceding workpiece by the action of the ejection mechanism. S4: The upper die holder continues to move downward, and the first vertical end face of the slider gradually approaches the upper die forming block and fits into the second vertical end face of the upper die forming block. At this time, the limit plate and the slider reset plate begin to contact, driving the entire slider installation assembly to move upward; S5. After that, the upper die holder continues to descend, and the upper die shaping inner stripping plate contacts and presses on the lower die shaping block, so that the lower die shaping block and the lower pad are closed. The upper die shaping inner stripping plate cooperates with the lower die shaping block to perform the shaping operation, and the upper die forming block cooperates with the lower die forming block to start the forming operation until the upper die holder continues to descend and closes relative to the lower die holder. The forming process and the shaping process are completed simultaneously, and the previous process part is stamped into the current process part; S6. The pneumatic punch press drives the upper die seat to open the die upward. Under the action of the ejection mechanism, the slider begins to slide downward along the fourth inclined surface of the slider seat until the second inclined surface of the slider contacts the third inclined surface of the slider reset plate. At this time, under the dual action of the fourth inclined surface and the ejection mechanism, the slider slides downward and outward until the first horizontal end surface of the slider contacts the second horizontal end surface of the slider reset plate, realizing the slider removal and reset. S7. Finally, the upper die seat continues to move upward, and the upper die shaping inner stripping plate and the lower die forming block eject the workpiece of this process. At the same time, the lower die shaping block also gradually ejects the workpiece of this process to achieve material removal.
[0014] The beneficial effects of the present invention are: 1. Higher dimensional accuracy: This invention adopts multiple dimensional protection measures, such as precisely placing the outer diameter of the D dimension of the pre-process part in the step of the positioning plate, doubly protecting the B dimension by the inner diameter of the upper mold forming block and the outer diameter of the lower mold shaping block, and protecting the C and D dimensions from deformation by the positioning plate and the slider reset plate at the end of molding. These measures effectively avoid dimensional deviations and deformation of the product during the molding process, significantly improving the dimensional accuracy and stability of the product. The existing technology only uses simple positioning and protection measures, which is difficult to achieve such high dimensional accuracy. 2. Better deformation prevention: The design of the eight sliders being formed after being locked together avoids gaps caused by incomplete locking of the sliders, preventing mold marks on the product. At the same time, it provides uniform support for the product, reducing stress concentration and deformation risks. The existing integral slider structure cannot provide such uniform support and is prone to product deformation. 3. Smoother stripping: The present invention ensures smooth product stripping through the inclination matching design of the slider and the slider seat, the slider and the slider reset plate, as well as the coordinated effect of the upper mold shaping inner stripping plate, the lower mold forming block and the lower mold shaping block. In the existing technology, there may be problems such as the slider getting stuck in the product during stripping, resulting in unsmooth stripping. 4. Lower production efficiency and cost: The new molding process integrates multiple processes into one, completing the entire process of pressing, molding and shaping in one mold, shortening the production cycle, reducing production links and equipment occupation, and reducing production costs and manpower input. The existing technology requires multiple independent processes, long production cycles and high costs; 5. Higher product quality stability and consistency: Since the present invention has obvious advantages in terms of dimensional accuracy, deformation prevention, and material stripping prevention, and each component works together according to a precise timing and action sequence, it can better ensure the stability and consistency of product quality. The existing technology is prone to errors and unstable product quality because each process is carried out independently; 6. Stronger adaptability: The present invention can better adapt to the special shape and size requirements of products and ensure the stability and reliability of product structure. When facing products with special shape and size requirements, the existing technology often requires complex mold design and process adjustment, and has poor adaptability. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of the present invention when the mold is opened.
[0016] Figure 2 This is a schematic diagram of the positioning structure of the previous process parts on the positioning plate.
[0017] Figure 3 Schematic diagram of the matching structure of the slider.
[0018] Figure 4 It is a structural diagram of the slider in the mold opening state.
[0019] Figure 5 for Figure 4 Schematic diagram of the top view structure.
[0020] Figure 6 It is a structural diagram of the slider in the mold closing state.
[0021] Figure 7 for Figure 6 Schematic diagram of the top view structure.
[0022] Figure 8 It is a schematic diagram of the structure of the present invention during mold closing.
[0023] Figure 9 It is a structural schematic diagram of the front process parts in the present invention.
[0024] Figure 10 It is a structural schematic diagram of the process parts in the present invention.
[0025] Figure 11 This is a schematic diagram comparing the structures of the previous process parts and the current process parts in the present invention.
[0026] Explanation of reference numerals: upper die seat 01, upper die outer guide sleeve 02, upper pad 03, first upper die contour screw 04, ejector mechanism 05, upper clamping plate 06, first upper die screw 07, first upper die spring 08, second upper die contour screw 09, upper die shaping inner stripping plate 10, upper die forming block 11, second upper die spring 12, slider seat 21, reset pad 22, slider reset plate 23, slider 24, second upper die screw 25, gap 26, front process part 31, lower die forming block 41, positioning plate 42, first lower die contour screw 43, second lower die contour screw 44, The first lower die screw 45, the lower die base 46, the lower die outer guide column 47, the lower die shaping block 48, the first lower die spring 49, the limit plate 50, the lower pad 51, the second lower die spring 52, the second lower die screw 53, the current process part 61, the first horizontal end face a, the fillet b, the small protrusion c, the small inclined surface d, the first vertical end face e, the first inclined surface f, the second inclined surface g, the second horizontal end face k, the third inclined surface m, the fourth inclined surface n, the second vertical end face p, the third horizontal end face r, the step s, the first product size A, the second product size B, the third product size C, and the fourth product size D. DETAILED DESCRIPTION
[0027] The present invention will be described in detail below with reference to the accompanying drawings: Example 1: As shown in the attached Figures 1 to 11 As shown, a mold structure for slider molding includes an upper mold base 01, an upper mold outer guide sleeve 02, an upper pad 03, a first upper mold contour screw 04, a material ejection mechanism 05, an upper clamping plate 06, a first upper mold screw 07, a first upper mold spring 08, a second upper mold contour screw 09, an upper mold shaping inner stripping plate 10, an upper mold forming block 11, a second upper mold spring 12, a slider base 21, a reset pad 22, a slider reset plate 23, a slider 24, a second upper mold screw 25, a gap 26, a front process part 31, a lower mold forming block 41, a positioning plate 42, a first lower mold contour screw 43, a second lower mold contour screw Screw 44, first lower die screw 45, lower die base 46, lower die outer guide pin 47, lower die shaping block 48, first lower die spring 49, limit plate 50, lower pad 51, second lower die spring 52, second lower die screw 53, current process part 61, first horizontal end face a, fillet b, small protrusion c, small inclined surface d, first vertical end face e, first inclined surface f, second inclined surface g, second horizontal end face k, third inclined surface m, fourth inclined surface n, second vertical end face p, third horizontal end face r, step s, first product size A, second product size B, third product size C and fourth product size D.
[0028] Reference Attachment Figure 1 、 8The upper die base 01 is positioned above the lower die base 46, and is capable of opening and closing relative to the lower die base 46. The upper pad 03 is fixed to the upper die base 01, and the upper die forming block 11 is embedded in the center of the upper pad 03. The upper die forming block 11 is fixed to the upper die base 01 via the first upper die screw 07. The upper die shaping inner stripping plate 10 is embedded in the center of the upper die forming block 11. The upper die shaping inner stripping plate 10 is slidably connected to the upper die base 01, allowing the upper die shaping inner stripping plate 10 to slide relative to the upper die forming block 11. The slider mounting assembly is mounted on the upper pad 03 in a vertically slidable manner, and the slider 24 is embedded in the slider mounting assembly.
[0029] One end of the ejection mechanism 05 is provided with a set screw and fixed on the upper mold base 01. The other end of the ejection mechanism 05 is a ejection rod. A ejection spring is provided between the set screw and the ejection rod. The ejection rod passes through the upper pad 03 and presses on the top of the slider 24, so that the slider 24 can slide relative to the slider mounting assembly.
[0030] A positioning plate 42 is mounted on the lower plate 51. This plate is used to position and place the preceding workpiece 31 (formed by the preceding process). The lower die base 46, lower plate 51, and positioning plate 42 are secured in sequence by second lower die screws 53. The lower die forming block 41 is embedded in the center of the positioning plate 42, while the lower die shaping block 48 is embedded in the center of the lower die forming block 41. Both the lower die forming block 41 and the lower die shaping block 48 are connected to the lower die base 46 in a relatively sliding manner. When the upper die base 01 and the lower die base 46 are closed, the slider 24 is pressed against the upper die forming block 11, the lower die forming block 41, and the positioning plate 42, thereby stamping the preceding workpiece 31 into the present workpiece 61.
[0031] like Figure 1 As shown, the slider installation assembly includes a slider seat 21, a reset pad 22 and a slider reset plate 23, which are sequentially connected and fixed by the second upper die screw 25. Figure 3 As shown, a first horizontal end face a is provided on the inner side of the lower portion of the slider 24, capable of contacting the third horizontal end face r at the top of the positioning plate 42. A first inclined surface f is provided on the outer side of the upper portion of the slider 24, capable of sliding along the fourth inclined surface n on the inner side of the slider seat 21. A first vertical end face e is provided on the inner side of the upper portion of the slider, capable of cooperating with the second vertical end face p on the outer side of the upper mold forming block 11. A small protrusion c is provided between the first horizontal end face a and the first vertical end face e of the slider 24, capable of cooperating with the upper mold forming block 11, the lower mold forming block 41 and the positioning plate 42 to stamp the front process part 31. The small protrusion c is connected to the first vertical end face e by a small inclined surface d. A second inclined surface g is provided on the outer side of the lower portion of the slider 24, capable of sliding along the third inclined surface m on the slider reset plate 23 until the first horizontal end face a contacts the second horizontal end face k at the top of the slider reset plate 23, thereby achieving the material removal of the slider 24.
[0032] Furthermore, the first horizontal end face a and the small protrusion c are transitioned by a rounded corner b. When the first horizontal end face a contacts the third horizontal end face r, the slider 24 slides upward relative to the slider seat 21, and the rounded corner b is used to guide the slider 24 to slide toward the front process part 31. At the same time, the slider 24 and the front process part 31 are pressed together by the lifting mechanism 05.
[0033] like Figure 1 、 8 As shown, an upper clamping plate 06 is fixed to the lower surface of the upper pad 03. The first upper die contour screw 04 passes through the upper pad 03 and the upper clamping plate 06 in sequence and is fixedly connected to the slider seat 21. The head of the first upper die contour screw 04 extends into the upper die seat 01. A second upper die spring 12 is inserted through the upper pad 03 and the upper clamping plate 06. One end of the second upper die spring 12 rests on the upper die seat 01 and the other end rests on the slider seat 21. A first upper die spring 08 is installed between the upper die shaping inner stripping plate 10 and the upper die seat 01. The second upper die contour screw 09 has one end extending into the upper die seat 01 and the other end extending out of the upper die seat 01 and fixed to the upper die shaping inner stripping plate 10.
[0034] Reference Attachment Figure 4 、 5 , 6, and 7. There are eight sliders 24, evenly distributed along the circumference of the slider mounting assembly. When the upper die base 01 and the lower die base 46 are in the open position, gaps 26 are formed between adjacent sliders 24. At this point, the diameter φD1 enclosed by the first vertical end faces e of each slider 24 is larger than the first product dimension A of the workpiece 61, facilitating stripping. When the upper die base 01 and the lower die base 46 are in the closed position, the sliders 24 are tightened together, eliminating gaps 26. At this point, the diameter φD2 enclosed by the first vertical end faces e of each slider 24 is equal to the third product dimension C of the workpiece 61. Figure 9 、 Figure 10 The drawing showing the required dimensions of the product.
[0035] like Figure 1 、 8As shown, a limit plate 50 is fixed to the lower plate 51 by the first lower die screw 45, which can limit the downward movement of the slider mounting assembly. One end of the first lower die contour screw 43 extends into the lower die base 46, and the other end passes through the lower die base 46 and is fixed to the lower die shaping block 48. A first lower die spring 49 is disposed between the lower die shaping block 48 and the lower die base 46, and the first lower die spring 49 extends through the lower plate 51. One end of the second lower die contour screw 44 extends into the lower die base 46, and the other end passes through the lower die base 46 and is fixed to the lower die forming block 41. A second lower die spring 52 is disposed between the lower die forming block 41 and the lower die base 46, and the second lower die spring 52 extends through the lower plate 51. When the upper die holder 01 and the lower die holder 46 are in close contact, the height of the uppermost end of the lower die shaping block 48 is higher than the height of the lowermost end of the upper die forming block 11. This ensures that the second product dimension B of the preceding process part 31 is protected by both the inner diameter of the upper die forming block 11 and the outer diameter of the lower die shaping block 48. This effectively prevents the preceding process part 31 from deforming due to lack of restraint during the molding process, which could lead to dimensional defects. Preferably, a plurality of upper die outer guide sleeves 02 are provided on the upper die holder 01, and lower die outer guide posts 47 are provided on the lower die holder 46 in a one-to-one correspondence with the upper die outer guide sleeves 02. When the upper die holder 01 and the lower die holder 46 are in close contact, the lower die outer guide posts 47 are inserted into the corresponding upper die outer guide sleeves 02 to achieve upper and lower die positioning.
[0036] Reference Attachment Figure 2 A step s is provided at the inner diameter of the top of the positioning plate 42 . The step s can locate the fourth product size D of the previous process part 31 , and the inner diameter design size of the step s is within the tolerance range of the fourth product size D.
[0037] Example 2: A method for forming a slider, using the above-mentioned slider forming mold structure, comprising the following steps: S1. Before stamping, place the front-process part 31 on the lower die. The fourth product dimension D of the front-process part 31 is positioned by the step s on the positioning plate 42. The third product dimension C of the front-process part 31 is positioned by the outer diameter of the lower die forming block 41. The second product dimension B of the front-process part 31 is positioned by the outer diameter of the lower die shaping block 48. S2. The pneumatic punch drives the upper die base 01 downward to close the die. The lower die outer guide pin 47 is first inserted into the upper die outer guide sleeve 02 to achieve the positioning of the upper and lower dies. S3. Subsequently, the upper die seat 01 continues to descend, and the first horizontal end surface a of the slider 24 begins to contact the third horizontal end surface r of the positioning plate 42. At this time, the elastic force provided by the ejection mechanism 05 is less than the elastic force provided by the second upper die spring 12, causing the first inclined surface f of the slider 24 to slide along the fourth inclined surface n of the slider seat 21. At the same time, the slider 24 slides toward the front process part 31 through the rounded corner b and is pressed against the front process part 31 by the action of the ejection mechanism 05. S4: The upper die holder 01 continues to move downward, and the first vertical end surface e of the slider 24 gradually approaches the upper die forming block 11 and abuts against the second vertical end surface p of the upper die forming block 11. At this time, the limit plate 50 and the slider reset plate 23 begin to contact, driving the entire slider mounting assembly to move upward. S5. After that, the upper die holder 01 continues to descend, and the upper die shaping inner stripping plate 10 contacts and presses on the lower die shaping block 48, so that the lower die shaping block 48 and the lower pad 51 are closed. The upper die shaping inner stripping plate 10 cooperates with the lower die shaping block 48 to perform the shaping operation, and the upper die forming block 11 cooperates with the lower die forming block 41 to start the forming operation until the upper die holder 01 continues to descend and closes relative to the lower die holder 46. The forming process and the shaping process are completed simultaneously, and the previous process part 31 is stamped into the current process part 61. S6. The pneumatic punch drives the upper die base 01 to open the die upward. Under the action of the ejection mechanism 05, the slider 24 begins to slide downward along the fourth inclined surface n of the slider base 21 until the second inclined surface g of the slider 24 contacts the third inclined surface m of the slider reset plate 23. At this time, under the dual action of the fourth inclined surface n and the ejection mechanism 05, the slider 24 slides downward and outward until the first horizontal end surface a of the slider 24 contacts the second horizontal end surface k of the slider reset plate 23, thereby achieving the removal and reset of the slider 24. S7. Finally, the upper die holder 01 continues to move upward, and the upper die shaping inner stripping plate 10 and the lower die forming block 41 eject the current process part 61. At the same time, the lower die shaping block 48 also gradually ejects the current process part 61 to achieve material stripping.
[0038] The design principle of the present invention: Slider block structure: The eight-piece slider design enhances its freedom of movement and flexibility within the mold. When the upper and lower molds are closed, the eight sliders fit tightly together. The diameter of each slider's "e" section aligns with the product's "C" dimension. During molding, uniform force is applied from different directions to the product's unique structure, achieving precise flaring and forming. This ensures that the product's unique structure is formed according to design requirements, improving product quality consistency and stability.
[0039] Slope fit design: The slider and reset plate are aligned at an angle, with the slider at angle g and the reset plate at angle m. When the upper and lower molds open, their relative motion causes the slider to move outward in a specific direction. At this point, the diameter of the slider at angle e is larger than the part's dimension A, facilitating part removal. This alignment provides stable support during molding, preventing dimensional deviations or structural defects caused by unstable support or inaccurate molding.
[0040] The slider and slider seat are aligned with each other, with a guiding slope at position f of slider 24 and position n of slider seat 21. When the upper die descends, provided the force of the ejector mechanism is less than the force of the upper die spring, the active portion of the upper die moves upward and inward along this slope, providing precise guidance, stabilizing the motion trajectory, reducing wear on die components, and extending die life.
[0041] Reasonable mold structure: The mold first presses the material, then forms it. The R angle design at position b of slider 24 first presses the front-end part 31 under the pressure of the ejection mechanism. The upper mold shaping inner stripper 10 then presses the front-end part 31 and the lower mold shaping block 48, before pressing the front-end part 31 into the upper mold forming block 11 for formation. This design ensures the front-end part's position is stable, preventing dimensional deviation and poor forming.
[0042] Dimension protection: the outer diameter of the D dimension of the front-process part 31 is placed on the s position of the positioning plate 42, and the inner diameter of the step is within the D dimension tolerance range to prevent dimensional deviation; the B dimension is doubly protected by the inner diameter of the upper mold forming block 11 and the outer diameter of the lower mold shaping block 48; in the later stage of molding, the limit plate 50 and the slider reset plate 23 protect the C and D dimensions from deformation, ensuring the dimensional accuracy and stability of the product.
[0043] For smooth material removal, when the upper die retracts, the slider 24 falls under the action of the ejection mechanism. Its portion f cooperates with the slope of portion n of the slider seat 21, and portion g of the slider 24 cooperates with the slope of portion m of the slider reset plate 23, so that the slider moves downward and outward along the slope to reset, ensuring smooth product removal. At the same time, the upper die shaping inner stripping plate 10, the lower die forming block 41, and the lower die shaping block 48 work together to further ensure smooth material removal.
[0044] To prevent deformation, the eight sliders are locked together before forming. This avoids gaps caused by incomplete slider engagement, prevents mold marks on the product, ensures surface quality, and provides uniform support. The precise fit and coordinated movement of the upper and lower mold components reduces stress concentration and the risk of deformation, ensuring the product shape meets design requirements.
[0045] Molding process optimization: The new molding process integrates multiple steps into one, whereas traditional processes require multiple independent steps, resulting in long production cycles and prone to errors in product transfer and positioning. Through innovative mold structure, the new process completes the entire pressing, forming, and shaping process in a single mold. Each component works together in a precise timing and sequence, shortening production cycles, reducing production links and equipment usage, minimizing errors, and improving product quality stability and consistency. This also reduces production costs and labor input, improving enterprise profitability and competitiveness, and can better adapt to special product shapes and sizes, ensuring product structural stability and reliability.
[0046] The working process of the present invention: Before stamping, the previous process part 31 is placed on the mold. In view of the tolerance requirements of the product D dimension, and the fact that this dimension has been punched out to within the tolerance range specified in the drawing, in order to effectively control this dimension in the subsequent molding process, the following positioning measures are taken: the outer diameter of the D dimension of the previous process part 31 is precisely placed in the step at the s position of the positioning plate 42, and the inner diameter of the step is designed to be within the tolerance range of the D dimension. Through this design, during the molding process, when the previous process part 31 tends to expand outward due to force, the step structure can play an effective positioning and protection role, preventing the D dimension of the previous process part 31 from exceeding the tolerance range. Figure 7 .
[0047] When the upper working table of the pneumatic punch press drives the upper die downward, the lower die outer guide pin 47 is first inserted into the upper die outer guide sleeve 02, playing a role in positioning the upper and lower dies.
[0048] Subsequently, the upper die continues to descend, and portion a of the slider 24 comes into contact with portion r of the positioning plate 42. Portion f of the slider 24 and portion n of the slider seat 21 are designed with a guide slope, and the slider 24 is in an active state. Under the specific condition that the elastic force of the ejection mechanism 05 is smaller than the elastic force of the second upper die spring 12, when the upper die continues to descend, the active portion of the upper die will move upward and inward along the slope f of the slider 24 and the slope n of the slider seat 21. At the same time, portion b of the slider 24 is provided with an R angle. This R angle design enables the slider 24 to slide smoothly toward the preceding process part 31 and, under the pressure of the ejection mechanism 05, reliably press the preceding process part 31, preparing for subsequent molding operations.
[0049] As the upper die continues to descend, the upper die shaping inner stripper plate 10, under the action of the first upper die spring 08, presses against the front-end component 31 and indirectly against the lower die shaping block 48, continuing its downward movement. Because the spring force of the first upper die spring 08 is weaker than that of the first lower die spring 49, the upper die shaping inner stripper plate 10 closes against the upper die base 01 as the upper die continues to descend, simultaneously pressing the front-end component 31 into the upper die forming block 11. At this point, the B dimension of the front-end component 31 is protected by both the inner diameter of the upper die forming block 11 and the outer diameter of the lower die shaping block 48, effectively preventing deformation of the front-end component 31 during the molding process due to unconstrained design, which could lead to dimensional defects.
[0050] The upper mold continues to move downward, and when it moves downward to a certain extent, the e portion of the slider 24 fits with the p portion of the upper mold forming block 11, and a fitting gap is left to allow relative sliding. At this time, the limit plate 50 and the slider reset plate 23 begin to contact. Under the action of the reaction force, the movable part of the upper mold is pushed upward. This design has three functions: first, it prevents the positioning plate 42 from excessively pushing against the slider 24, and avoids the slider 24 being stuck on the upper mold forming block 11 due to the influence of the slider seat 21 and the upper mold spring 12, thereby ensuring the smooth operation of the movable part of the mold; second, it effectively protects the C and D dimensions of the previous process part 31 from deformation during the molding process, thereby ensuring the accuracy and stability of the product size. Third, the eight sliders 24 are closed and then molded to solve the gap problem caused by the sliders not being completely closed when molding, thereby avoiding mold marks on the product and ensuring the appearance quality.
[0051] The upper die continues to move downward, and the upper die movable part continues to push upward. At the same time, under the pressure of the upper die shaping inner stripping plate 10, the lower die shaping block 48 and the lower pad 51 are closed, and the upper die forming block 11 and the lower die forming block 41 begin to perform the forming operation to achieve the specific shape requirements of the product.
[0052] When the upper and lower molds continue to descend and finally close, the molding process is complete, and the shaping process is also completed, achieving the purpose of molding and shaping. This series of operations is completed through the precise coordination and coordinated movement of the mold components, ensuring that the product achieves the shape and dimensional accuracy required by the design.
[0053] Subsequently, the upper mold begins to retreat upward, and the upper and lower molds gradually loosen. During this process, the slider 24 begins to fall downward under the action of the ejection mechanism 05. The g portion of the slider 24 and the n portion of the slider seat 21 are designed with a guide slope. When the slope g portion of the slider 24 contacts the slope m portion of the slider reset plate 23, under the dual action of the guide slope and the ejection mechanism 05, the slider 24 will move downward and outward along the guide slope until the a portion of the slider 24 and the k portion of the reset plate 23 fit together, achieving the effect of the slider 24 unloading and resetting. This design mainly ensures that the product can be unloaded smoothly, avoiding the problem of being unable to unload the product due to the c portion of the slider 24 being stuck in the A size portion of the product.
[0054] The upper die continues to retreat upwards, and when the upper die shaping inner stripping plate 10 and the lower die forming block 41 eject the product, the lower die shaping block 48 also gradually ejects the product, playing a stripping effect. At this point, product production is completed.
[0055] It is understandable that for those skilled in the art, any equivalent replacement or change to the technical solution and inventive concept of the present invention should fall within the scope of protection of the claims attached to the present invention.
Claims
1. A slider forming die structure for punching a front-end part (31) formed by a front-end process, characterized in that: include: The upper die base (01) is arranged above the lower die base (46) and moves relative to the lower die base (46) to open and close the die; The upper pad (03) is fixed to the upper die base (01), the upper die forming block (11) is embedded in the center of the upper pad (03), the upper die forming block (11) is fixed to the upper die base (01), and the upper die shaping inner stripping plate (10) is embedded in the center of the upper die forming block (11), the upper die shaping inner stripping plate (10) is slidably connected to the upper die base (01), so that the upper die shaping inner stripping plate (10) slides relative to the upper die forming block (11); A slider installation assembly is mounted on the upper pad (03) in a relatively slidable manner in a vertical direction, and a mounting slider (24) is embedded in the slider installation assembly; A material ejection mechanism (05), one end of which is fixed to the upper die base (01), and the other end of which passes through the upper pad (03) and is pressed against the top of the slider (24), so that the slider (24) slides relative to the slider mounting assembly; as well as The lower pad (51) is provided with a positioning plate (42) thereon for positioning and placing the preceding process part (31). The lower die base (46), the lower pad (51) and the positioning plate (42) are fixed in sequence. The center of the positioning plate (42) is embedded in the lower die forming block (41), and the center of the lower die forming block (41) is embedded in the lower die shaping block (48). The lower die forming block (41) and the lower die shaping block (48) are connected to the lower die base (46) in a relatively sliding manner. When the upper die base (01) and the lower die base (46) are closed, the slider (24) is pressed and matched with the upper die forming block (11), the lower die forming block (41) and the positioning plate (42) to punch the preceding process part (31) into the present process part (61).
2. The mold structure for slider molding according to claim 1, characterized in that: The slider mounting assembly includes a slider seat (21), a reset pad (22) and a slider reset plate (23) connected in sequence, a first horizontal end surface (a) is provided on the inner side of the lower portion of the slider (24) for contacting the third horizontal end surface (r) on the top of the positioning plate (42), a first inclined surface (f) is provided on the outer side of the upper portion of the slider (24) for sliding along the fourth inclined surface (n) on the inner side of the slider seat (21); a first vertical end surface (e) is provided on the inner side of the upper portion of the slider for cooperating with the fourth inclined surface (n) on the outer side of the upper mold forming block (11) Two vertical end faces (p), a small protrusion (c) is set between the first horizontal end face (a) and the first vertical end face (e) of the slider (24), and the small protrusion (c) and the first vertical end face (e) are connected by a small inclined surface (d); a second inclined surface (g) is set on the outer side of the lower part of the slider (24) for sliding along the third inclined surface (m) on the slider reset plate (23) until the first horizontal end face (a) contacts the second horizontal end face (k) at the top of the slider reset plate (23), thereby realizing the stripping of the slider (24).
3. The mold structure for slider molding according to claim 2, characterized in that: The first horizontal end face (a) and the small protrusion (c) are transitioned by a rounded corner (b). When the first horizontal end face (a) contacts the third horizontal end face (r), the slider (24) slides upward relative to the slider seat (21), and the rounded corner (b) is used to guide the slider (24) to slide toward the front process part (31). At the same time, the slider (24) and the front process part (31) are pressed together by the ejection mechanism (05).
4. The mold structure for slider molding according to claim 1, characterized in that: An upper clamping plate (06) is fixed to the lower surface of the upper pad (03), and a first upper die contour screw (04) passes through the upper pad (03) and the upper clamping plate (06) in sequence and is fixedly connected to the slider seat (21), and the head of the first upper die contour screw (04) extends into the upper die seat (01); a second upper die spring (12) is passed through the upper pad (03) and the upper clamping plate (06), one end of the second upper die spring (12) rests on the upper die seat (01), and the other end rests on the slider seat (21); a first upper die spring (08) is set between the upper die shaping inner stripping plate (10) and the upper die seat (01), one end of the second upper die contour screw (09) extends into the upper die seat (01), and the other end passes through the upper die seat (01) and is fixed to the upper die shaping inner stripping plate (10).
5. The mold structure for slider molding according to claim 2, characterized in that: The sliders (24) are provided with eight pieces and are evenly distributed on the slider mounting assembly along the circumferential direction. When the upper mold base (01) and the lower mold base (46) are opened, a gap (26) is provided between adjacent sliders (24). At this time, the diameter φD1 enclosed by the first vertical end surface (e) of each slider (24) is larger than the first product size (A) of the process part (61), which facilitates stripping. When the upper mold base (01) and the lower mold base (46) are closed, the sliders (24) are tightened to eliminate the gap (26). At this time, the diameter φD2 enclosed by the first vertical end surface (e) of each slider (24) is equal to the third product size (C) of the process part (61).
6. The mold structure for slider molding according to claim 1, characterized in that: A limit plate (50) is fixed on the lower pad (51) by the first lower die screw (45) to limit the downward movement of the slider mounting assembly; one end of the first lower die contour screw (43) extends into the lower die base (46) and the other end passes through the lower die base (46) and is fixed to the lower die shaping block (48), and a first lower die spring (49) is provided between the lower die shaping block (48) and the lower die base (46), and the first lower die spring (49) passes through the lower pad (51); one end of the second lower die contour screw (44) extends into the lower die base (46), The other end passes through the lower die base (46) and is fixed to the lower die forming block (41), and a second lower die spring (52) is provided between the lower die forming block (41) and the lower die base (46), and the second lower die spring (52) passes through the lower pad (51); when the upper die base (01) and the lower die base (46) are closed, the height of the upper end of the lower die shaping block (48) is higher than the height of the lower end of the upper die forming block (11), so that the second product size (B) of the front process part (31) is doubly protected by the inner diameter of the upper die forming block (11) and the outer diameter of the lower die shaping block (48).
7. The mold structure for slider molding according to claim 1, characterized in that: A step (s) is provided at the inner diameter of the top of the positioning plate (42) for positioning the fourth product size (D) of the previous process part (31), and the inner diameter design size of the step (s) is within the tolerance range of the fourth product size (D).
8. The mold structure for slider molding according to claim 1, characterized in that: A plurality of upper die outer guide sleeves (02) are provided on the upper die base (01), and lower die outer guide pins (47) are provided on the lower die base (46) in one-to-one correspondence with the upper die outer guide sleeves (02). When the upper die base (01) and the lower die base (46) are closed, the lower die outer guide pins (47) are correspondingly inserted into the upper die outer guide sleeves (02) to achieve upper and lower die positioning.
9. A method for forming a slider, using the slider forming mold structure according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Before stamping, the front process part (31) is placed on the lower die. The fourth product size (D) of the front process part (31) is positioned by the step (s) on the positioning plate (42). The third product size (C) of the front process part (31) is positioned by the outer diameter of the lower die forming block (41). The second product size (B) of the front process part (31) is positioned by the outer diameter of the lower die shaping block (48). S2, the upper die base (01) is driven downward by the pneumatic punch to close the die, and the lower die outer guide pin (47) is first inserted into the upper die outer guide sleeve (02) to achieve the positioning of the upper and lower dies; S3. Subsequently, the upper die seat (01) continues to move downward, and the first horizontal end surface (a) of the slider (24) begins to contact the third horizontal end surface (r) of the positioning plate (42). At this time, the elastic force provided by the ejection mechanism (05) is less than the elastic force provided by the second upper die spring (12), so that the first inclined surface (f) of the slider (24) slides along the fourth inclined surface (n) of the slider seat (21). At the same time, the slider (24) slides toward the front process part (31) through the rounded corner (b) and presses the front process part (31) under the action of the ejection mechanism (05); S4, the upper die base (01) continues to move downward, and the first vertical end surface (e) of the slider (24) gradually approaches the upper die forming block (11) and fits with the second vertical end surface (p) on the upper die forming block (11). At this time, the limit plate (50) and the slider reset plate (23) begin to contact, driving the entire slider installation assembly to move upward; S5. Thereafter, the upper die base (01) continues to descend, the upper die shaping inner stripping plate (10) contacts and presses on the lower die shaping block (48), so that the lower die shaping block (48) and the lower pad (51) are closed, the upper die shaping inner stripping plate (10) cooperates with the lower die shaping block (48) to perform the shaping operation, and the upper die forming block (11) cooperates with the lower die forming block (41) to start the forming operation until the upper die base (01) continues to descend and closes relative to the lower die base (46). The forming process and the shaping process are completed simultaneously, and the previous process part (31) is punched into the current process part (61); S6. The upper die seat (01) is driven by the pneumatic punch to open the die upwards. The slider (24) begins to slide downwards along the fourth inclined surface (n) of the slider seat (21) under the action of the ejection mechanism (05) until the second inclined surface (g) of the slider (24) contacts the third inclined surface (m) of the slider reset plate (23). At this time, under the dual action of the fourth inclined surface (n) and the ejection mechanism (05), the slider (24) slides downwards and outwards until the first horizontal end surface (a) of the slider (24) is in contact with the second horizontal end surface (k) of the slider reset plate (23), thereby realizing the removal and reset of the slider (24); S7. Finally, the upper die seat (01) continues to move upward, and the upper die shaping inner stripping plate (10) and the lower die forming block (41) eject the current process part (61). At the same time, the lower die shaping block (48) also gradually ejects the current process part (61) to achieve material removal.
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