A mold structure for molding a slider

Abstract

The utility model discloses a mould structure of slider forming relates to hardware punch die field, including upper die holder, opposite lower die holder opening, closing die movement, upper backing plate is fixed with upper die holder, slider mounting subassembly is slidably installed on the upper backing plate, and the slider is embedded and installed on slider mounting subassembly, the material mechanism of feeding, its one end is fixed on the upper die holder, and its other end penetrates the upper backing plate and is topped in the slider top, makes slider relative slider mounting subassembly sliding, and lower backing plate is at setting the locating plate on it, is used for positioning, and places former process spare, and the locating plate center is embedded and installs lower die forming block, and lower die forming block center is embedded and installs lower die shaping block, when upper die holder and lower die holder closing die, slider and upper die forming block, lower die forming block and locating plate compression tight cooperation, will former process spare punch and form this process spare. The utility model can better adapt to product special shape and size requirement, guarantees product structure stability and reliability.

Description

Technical Field

[0001] This utility model relates to the field of metal stamping dies, specifically to a slider forming die structure for stretching products, which is suitable for metal stamping forming processes of special product structures. Background Technology

[0002] In metal stamping dies, the slider is an important moving component. It can slide inside the die along a specific trajectory and direction. By cooperating with other parts of the die (such as the die cavity, punch, ejector mechanism, etc.), it can perform operations such as forming and stripping of specific parts of the workpiece to meet the requirements of complex product structure and dimensional accuracy.

[0003] Currently, in the design and manufacturing of metal stamping dies, upgraded market demands have led to more complex product structures and higher requirements for dimensional accuracy. Many products also have unique shapes, significantly increasing the difficulty of forming. Traditional die structures exhibit significant drawbacks: numerous stamping processes result in low production efficiency and a high risk of errors; complex die structures lead to insufficient forming stability, poor dimensional consistency, and a low yield; and product surfaces are prone to defects such as die marks and wrinkles, affecting appearance and performance. Therefore, there is an urgent need to develop new die structures that optimize layout and processes through innovative design to improve forming stability, thereby addressing the efficiency, accuracy, stability, and quality issues of traditional dies and meeting the demands of modern production. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a mold structure for slider forming, which improves the freedom and flexibility of the slider in the mold, ensures that the special structure of the product can be formed according to the design requirements, and improves the consistency and stability of product quality.

[0005] The objective of this utility model is achieved through the following technical solution: a slider forming mold structure for stamping a previous process part formed by a previous process, the mold structure comprising:

[0006] The upper mold base is located above the lower mold base and moves relative to the lower mold base during mold opening and closing.

[0007] The upper pad is fixed to the upper mold base. The upper mold forming block is embedded in the center of the upper pad. The upper mold forming block is fixed to the upper mold base. The upper mold shaping inner ejector plate is embedded in the center of the upper mold forming block. The upper mold shaping inner ejector plate is slidably connected to the upper mold base, so that the upper mold shaping inner ejector plate slides relative to the upper mold forming block.

[0008] A slider mounting assembly is slidably mounted on an upper pad in a vertical direction, and a mounting slider is embedded in the slider mounting assembly;

[0009] The ejector mechanism has one end fixed to the upper mold base, and the other end passing through the upper pad and pressing against the top of the slider, causing the slider to slide relative to the slider mounting assembly; and

[0010] A lower pad is provided, on which a positioning plate is installed for positioning and placing the previous process part. The lower mold base, the lower pad, and the positioning plate are fixed in sequence. The lower mold forming block is embedded in the center of the positioning plate, and the lower mold shaping block is embedded in the center of the lower mold forming block. The lower mold forming block and the lower mold shaping block are slidably connected to the lower mold base. When the upper mold base and the lower mold base are closed, the slider is pressed and engaged with the upper mold forming block, the lower mold forming block, and the positioning plate to stamp the previous process part into the current process part.

[0011] 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 of 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 engaging 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 by 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 at the top of the slider reset plate, thereby realizing the slider unloading.

[0012] As a further technical solution, the first horizontal end face and the small protrusion are connected 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. The rounded corner guides the slider to slide to the previous process part, and at the same time, the ejector mechanism presses the slider and the previous process part together.

[0013] As a further technical solution, an upper clamping plate is fixed to the lower surface of the upper pad. A first upper mold equalizing screw passes through the upper pad and the upper clamping plate in sequence and is fixedly connected to the slider seat. The head of the first upper mold equalizing screw extends into the upper mold seat. A second upper mold spring is installed inside the upper pad and the upper clamping plate. One end of the second upper mold spring abuts against the upper mold seat, and the other end abuts against the slider seat. A first upper mold spring is installed between the upper mold shaping inner ejector plate and the upper mold seat. One end of the second upper mold equalizing screw extends into the upper mold seat, and the other end passes out of the upper mold seat and is fixed to the upper mold shaping inner ejector plate.

[0014] As a further technical solution, the slider is provided with eight blocks, which are evenly distributed on the slider mounting assembly along the circumference. When the upper mold base and the lower mold base open, there is a gap between adjacent sliders. At this time, the diameter φD1 enclosed by the first vertical end faces of each slider is greater than the first product size of the part in this process, which facilitates material removal. When the upper mold base and the lower mold base close, the sliders are tightly closed, eliminating 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.

[0015] As a further technical solution, a limit plate is fixed to the lower pad by a first lower die screw to limit the downward movement of the slider mounting assembly; one end of the first lower die equalizing screw extends into the lower die base and the other end protrudes from the lower die base and is fixed to the lower die shaping block, and a first lower die spring is provided between the lower die shaping block and the lower die base, the first lower die spring passing through the lower pad; one end of the second lower die equalizing screw extends into the lower die base and the other end protrudes from the lower die base and is fixed to the lower die forming block, and a second lower die spring is provided between the lower die forming block and the lower die base, the second lower die spring passing through the lower pad; when the upper die base and the lower die base are closed, the height of the uppermost end of the lower die shaping block is higher than the height of the lowermost end of the upper die forming block, so that the second product dimension of the previous process part is protected by both the inner diameter of the upper die forming block and the outer diameter of the lower die equalizing block.

[0016] As a further technical solution, a step is provided at the inner diameter of the top of the positioning plate to position the fourth product dimension of the previous process part, and the inner diameter of the step is designed to be within the tolerance range of the fourth product dimension.

[0017] As a further technical solution, the upper mold base is provided with a plurality of upper mold outer guide sleeves, and the lower mold base is provided with lower mold outer guide posts 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 posts are inserted into the upper mold outer guide sleeves to achieve positioning of the upper and lower molds.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. Higher dimensional accuracy: This utility model effectively avoids dimensional deviations and deformations of the product during the molding process by precisely placing the outer diameter of the D dimension of the previous process part in the step of the positioning plate, protecting the B dimension from the double protection of 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 after molding. This significantly improves the dimensional accuracy and stability of the product. In contrast, the existing technology only adopts simple positioning and protection measures, which are difficult to achieve such high dimensional accuracy.

[0020] 2. Better deformation prevention: The design of molding after the eight sliders are fully engaged avoids gaps caused by incomplete engagement 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 risk. The existing integral slider structure cannot provide such uniform support, which can easily lead to product deformation.

[0021] 3. Smoother material ejection: This utility model ensures smooth product ejection through the inclined design of the slider and slider seat, the slider and slider reset plate, and the synergistic effect of the upper mold forming inner ejection plate, the lower mold forming block and the lower mold forming block. Existing technologies may have problems such as the slider getting stuck on the product, resulting in unsmooth material ejection.

[0022] 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, which shortens the production cycle, reduces production links and equipment occupation, and lowers production costs and labor input. Existing technology requires multiple independent processes, resulting in a long production cycle and high cost.

[0023] 5. Higher product quality stability and consistency: Because this utility model has significant advantages in dimensional accuracy, prevention of deformation, and material stripping, and because each component works in a precise timing and action sequence, it can better ensure the stability and consistency of product quality. Existing technologies, because each process is carried out independently, are prone to errors and the product quality is unstable.

[0024] 6. Greater adaptability: This utility model can better adapt to the special shape and size requirements of products, ensuring 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, which has poor adaptability. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention during mold opening.

[0026] Figure 2 This is a schematic diagram of the positioning structure of the previous process part on the positioning plate.

[0027] Figure 3 This is a schematic diagram of the sliding block's mating structure.

[0028] Figure 4 This is a schematic diagram of the slider in the mold-open state.

[0029] Figure 5 for Figure 4 A top-view structural diagram.

[0030] Figure 6 This is a schematic diagram of the slider in the mold-closed state.

[0031] Figure 7 for Figure 6 A top-view structural diagram.

[0032] Figure 8 This is a schematic diagram of the structure of the present invention when the mold is closed.

[0033] Figure 9 This is a schematic diagram of the structure of the preceding process component in this utility model.

[0034] Figure 10 This is a schematic diagram of the structure of the component in this process of the present invention.

[0035] Figure 11 This is a schematic diagram showing the structural comparison between the previous process component and the current process component in this utility model.

[0036] Explanation of reference numerals in the attached drawings: Upper mold base 01, Upper mold outer guide sleeve 02, Upper pad plate 03, First upper mold equalizing screw 04, Ejector mechanism 05, Upper clamping plate 06, First upper mold screw 07, First upper mold spring 08, Second upper mold equalizing screw 09, Upper mold shaping inner stripper plate 10, Upper mold forming block 11, Second upper mold spring 12, Slider seat 21, Reset pad plate 22, Slider reset plate 23, Slider 24, Second upper mold screw 25, Clearance 26, Previous process part 31, Lower mold forming block 41, Positioning plate 42, First lower mold equalizing screw 43, Second lower mold equalizing screw 44 45. First lower mold screw, 46. Lower mold base, 47. Lower mold outer guide post, 48. Lower mold shaping block, 49. First lower mold spring, 50. Limiting plate, 51. Lower pad, 52. Second lower mold spring, 53. Second lower mold screw, 61. Part of this process, 61. First horizontal end face a, rounded corner 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 dimension A, second product dimension B, third product dimension C, fourth product dimension D. Detailed Implementation

[0037] The present invention will now be described in detail with reference to the accompanying drawings:

[0038] Example 1: As shown in the attached document Figures 1-11As shown, a slider forming mold structure includes an upper mold base 01, an upper mold outer guide sleeve 02, an upper pad plate 03, a first upper mold equalizing screw 04, an ejector mechanism 05, an upper clamping plate 06, a first upper mold screw 07, a first upper mold spring 08, a second upper mold equalizing screw 09, an upper mold shaping inner stripper plate 10, an upper mold forming block 11, a second upper mold spring 12, a slider base 21, a reset pad plate 22, a slider reset plate 23, a slider 24, a second upper mold screw 25, a gap 26, a previous process part 31, a lower mold forming block 41, a positioning plate 42, a first lower mold equalizing screw 43, and a second lower mold equalizing screw 44. 44. Screw 45. First lower mold screw 46. Lower mold base 47. Lower mold outer guide post 48. Lower mold shaping block 49. First lower mold spring 50. Limiting plate 51. Lower pad 52. Second lower mold spring 53. Second lower mold screw 54. Part of this process 61. First horizontal end face a. Rounded corner 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 dimension A. Second product dimension B. Third product dimension C. Fourth product dimension D.

[0039] Reference Appendix Figure 1 , 8 The upper mold base 01 is positioned above the lower mold base 46, allowing it to open and close relative to the lower mold base 46. An upper backing plate 03 is fixed to the upper mold base 01, with an upper mold forming block 11 embedded in its center. The upper mold forming block 11 is fixed to the upper mold base 01 by a first upper mold screw 07, and an upper mold shaping inner ejector plate 10 is embedded in its center. The upper mold shaping inner ejector plate 10 is slidably connected to the upper mold base 01, allowing it to slide relative to the upper mold forming block 11. A slider mounting assembly is slidably mounted vertically on the upper backing plate 03, with a slider 24 embedded in the assembly.

[0040] One end of the ejector mechanism 05 is provided with a set screw and fixed on the upper mold base 01. The other end of the ejector mechanism 05 is an ejector rod. An ejector spring is provided between the set screw and the ejector rod. The ejector rod passes through the upper pad 03 and then pushes against the top of the slider 24, so that the slider 24 can slide relative to the slider mounting assembly.

[0041] A positioning plate 42 is provided on the lower pad 51. The positioning plate 42 is used to position and place the previous process part 31 (the previous process part 31 is formed by the previous process). The lower mold base 46, the lower pad 51 and the positioning plate 42 are fixed in sequence by the second lower mold screw 53. The lower mold forming block 41 is embedded in the center of the positioning plate 42, and the lower mold shaping block 48 is embedded in the center of the lower mold forming block 41. The lower mold forming block 41 and the lower mold shaping block 48 are slidably connected to the lower mold base 46. When the upper mold base 01 and the lower mold base 46 are closed, the slider 24 is pressed and engaged with the upper mold forming block 11, the lower mold forming block 41 and the positioning plate 42 to stamp the previous process part 31 into the current process part 61.

[0042] like Figure 1 As shown, the slider mounting assembly includes a slider base 21, a reset pad 22, and a slider reset plate 23, which are sequentially connected and fixed by the second upper mold screw 25. Figure 3 As shown, the lower inner side of the slider 24 is provided with a first horizontal end face a, which can contact the third horizontal end face r on the top of the positioning plate 42. The upper outer side of the slider 24 is provided with a first inclined surface f, which can slide along the fourth inclined surface n on the inner side of the slider seat 21. The upper inner side of the slider is provided with a first vertical end face e, which can cooperate 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, which can cooperate with the upper mold forming block 11, the lower mold forming block 41 and the positioning plate 42 to stamp the previous process part 31. The small protrusion c and the first vertical end face e are connected by a small inclined surface d. The lower outer side of the slider 24 is provided with a second inclined surface g, which can slide 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 on the top of the slider reset plate 23, realizing the stripping of the slider 24.

[0043] 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. The rounded corner b guides the slider 24 to slide to the previous process part 31. At the same time, the ejector mechanism 05 presses the slider 24 and the previous process part 31 together.

[0044] like Figure 1 , 8 As shown, an upper clamping plate 06 is fixed to the lower surface of the upper pad 03. A first upper mold equalization 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 mold equalization screw 04 extends into the upper mold seat 01. A second upper mold spring 12 is installed inside the upper pad 03 and the upper clamping plate 06. One end of the second upper mold spring 12 abuts against the upper mold seat 01, and the other end abuts against the slider seat 21. A first upper mold spring 08 is installed between the upper mold shaping inner ejector plate 10 and the upper mold seat 01. One end of the second upper mold equalization screw 09 extends into the upper mold seat 01, and the other end passes out of the upper mold seat 01 and is fixed to the upper mold shaping inner ejector plate 10.

[0045] Reference Appendix Figure 4 , 5 There are eight sliders 24 in total, evenly distributed along the circumference on the slider mounting assembly. When the upper mold base 01 and the lower mold base 46 open, there is a gap 26 between adjacent sliders 24. At this time, the diameter φD1 enclosed by the first vertical end face e of each slider 24 is larger than the first product size A of the part 61 in this process, which facilitates material removal. When the upper mold base 01 and the lower mold base 46 close, the sliders 24 are tightly closed, eliminating the gap 26. At this time, the diameter φD2 enclosed by the first vertical end face e of each slider 24 is equal to the third product size C of the part 61 in this process. Figure 9 , Figure 10 The drawings show the required dimensions for the product.

[0046] like Figure 1 , 8 As shown, a limit plate 50 is fixed to the lower pad 51 by a first lower mold screw 45, which can limit the downward movement of the slider mounting assembly. One end of the first lower mold equalizing screw 43 extends into the lower mold base 46 and the other end protrudes from the lower mold base 46 and is fixed to the lower mold shaping block 48. A first lower mold spring 49 is provided between the lower mold shaping block 48 and the lower mold base 46, and the first lower mold spring 49 passes through the lower pad 51. One end of the second lower mold equalizing screw 44 extends into the lower mold base 46 and the other end protrudes from the lower mold base 46 and is fixed to the lower mold forming block 41. A second lower mold spring 52 is provided between the lower mold forming block 41 and the lower mold base 46, and the second lower mold spring 52 passes through the lower pad 51. When the upper mold base 01 and the lower mold base 46 are closed, the height of the uppermost end of the lower mold forming block 48 is higher than the height of the lowermost end of the upper mold forming block 11. This ensures that the second product dimension B of the previous process part 31 is protected by both the inner diameter of the upper mold forming block 11 and the outer diameter of the lower mold forming block 48, effectively preventing the previous process part 31 from deforming due to lack of constraint during the molding process, thus avoiding dimensional defects. Preferably, a plurality of upper mold outer guide sleeves 02 are provided on the upper mold base 01, and lower mold outer guide posts 47 are provided on the lower mold base 46 in a one-to-one correspondence with the upper mold outer guide sleeves 02. When the upper mold base 01 and the lower mold base 46 are closed, the lower mold outer guide posts 47 are inserted into the upper mold outer guide sleeves 02 to achieve upper and lower mold positioning.

[0047] Reference Appendix Figure 2 A step s is provided at the inner diameter of the top of the positioning plate 42. The step s can position the fourth product dimension D of the previous process part 31, and the inner diameter of the step s is designed to be within the tolerance range of the fourth product dimension D.

[0048] Example 2: A method for forming a slider, using the above-mentioned slider forming mold structure, includes the following steps:

[0049] S1. Before stamping, the previous process part 31 is placed on the lower die. The fourth product dimension D of the previous process part 31 is positioned by the step s on the positioning plate 42. The third product dimension C of the previous process part 31 is positioned by the outer diameter of the lower die forming block 41. The second product dimension B of the previous process part 31 is positioned by the outer diameter of the lower die shaping block 48.

[0050] S2. The pneumatic punch press drives the upper die holder 01 to close the die downwards. The lower die outer guide post 47 is first inserted into the upper die outer guide sleeve 02 to achieve the positioning of the upper and lower dies.

[0051] S3. Subsequently, the upper mold base 01 continues to descend, and the first horizontal end face a of the slider 24 begins to contact the third horizontal end face r of the positioning plate 42. At this time, the elastic force provided by the ejector mechanism 05 is less than the elastic force provided by the second upper mold spring 12, causing the first inclined surface f of the slider 24 to slide along the fourth inclined surface n of the slider base 21. At the same time, the slider 24 slides to the previous process part 31 through the rounded corner b, and presses the previous process part 31 under the action of the ejector mechanism 05.

[0052] S4. The upper mold base 01 continues to descend, and the first vertical end face e of the slider 24 gradually approaches the upper mold forming block 11 and fits against the second vertical end face p on the upper mold 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.

[0053] S5. Subsequently, the upper mold base 01 continues to descend, and the upper mold forming inner ejector plate 10 contacts and presses against the lower mold forming block 48, causing the lower mold forming block 48 and the lower pad plate 51 to close. The upper mold forming inner ejector plate 10 and the lower mold forming block 48 cooperate to perform the forming operation. The upper mold forming block 11 cooperates with the lower mold forming block 41 to start the forming operation until the upper mold base 01 continues to descend and closes relative to the lower mold base 46. The forming process and the shaping process are completed simultaneously, and the previous process part 31 is stamped to form the current process part 61.

[0054] S6. The upper die holder 01 is driven upward by the pneumatic punch to open the mold. Under the action of the ejector mechanism 05, the slider 24 begins to slide downward along the fourth inclined surface n of the slider seat 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 ejector mechanism 05, the slider 24 slides downward and outward 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 stripping and reset of the slider 24.

[0055] S7. Finally, the upper mold base 01 continues to move upward. At the same time, the upper mold shaping inner ejector plate 10 and the lower mold forming block 41 eject the workpiece 61 in this process, while the lower mold shaping block 48 also gradually ejects the workpiece 61 in this process, thus realizing material removal.

[0056] The design principle of this utility model is as follows:

[0057] Slider block structure:

[0058] Dividing the slider into eight equal parts enhances its freedom of movement and flexibility within the mold. The eight sliders fit tightly together when the upper and lower molds are closed. The diameter of part e of each slider matches the product's dimension C. During molding, uniform forces are applied to the product's special structure from different directions, achieving precise flaring and forming. This ensures the product's special structure is formed according to design requirements, improving product quality consistency and stability.

[0059] Inclined fit design:

[0060] The slider and the reset plate are fitted with an angled joint. The slider has an angled section g, and the reset plate has a corresponding angled section m. When the upper and lower molds open, their relative movement causes the slider to move outward in a specific direction. At this time, the diameter of the slider section e is larger than the product size A, which facilitates product unloading. During molding, this fit provides stable support for the product, preventing dimensional deviations or structural defects due to unstable support or inaccurate molding.

[0061] The slider and slider seat are fitted with an inclined surface, and the f part of slider 24 and the n part of slider seat 21 have a guiding inclined surface. When the upper mold moves downward, under the condition that the elastic force of the ejector mechanism is less than the elastic force of the upper mold spring, the moving part of the upper mold moves upward and inward along this inclined surface, which plays a precise guiding role, stabilizes the movement trajectory, reduces wear on mold parts, and extends the mold life.

[0062] The mold has a reasonable structure:

[0063] The process involves pressing the material before forming. The mold first uses the radius (R) of the slider 24 (b section) to press the previous workpiece 31 under the pressure of the ejector mechanism. Then, the upper mold forming inner ejector plate 10 presses down on the previous workpiece 31 and the lower mold forming block 48, before pressing the previous workpiece 31 into the upper mold forming block 11 for forming. This design ensures the stability of the previous workpiece's position, avoiding dimensional deviations and poor forming.

[0064] For dimensional protection, the outer diameter of dimension D of the previous process part 31 is placed in the step of the positioning plate 42 at part s to prevent the dimension from exceeding the tolerance range; dimension B is 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 limiting plate 50 and the slider reset plate 23 protect dimensions C and D from deformation, ensuring the dimensional accuracy and stability of the product.

[0065] Smooth ejection occurs when the upper mold retracts. The slider 24 falls under the action of the ejector mechanism, and its f-part aligns with the slope of the n-part of the slider seat 21 and the g-part of the slider 24 aligns with the slope of the m-part of the slider reset plate 23. This causes the slider to move downwards and outwards along the slope to reset, ensuring smooth product ejection. Simultaneously, the upper mold shaping inner ejector plate 10, the lower mold forming block 41, and the lower mold shaping block 48 work together to further ensure smooth ejection.

[0066] To prevent deformation, the eight sliders are fully engaged before molding, avoiding gaps caused by incomplete engagement, preventing mold marks, ensuring appearance quality, and providing uniform support. Precise fit and coordinated movement of all components in the upper and lower molds reduce stress concentration and deformation risks, ensuring the product shape meets design requirements.

[0067] Molding process optimization:

[0068] The new molding process integrates multiple steps into one, whereas traditional processes require multiple independent steps, resulting in long production cycles and potential errors in product transfer and positioning. Through innovative mold structure, the new process completes the entire process of pressing, molding, and shaping within a single mold. All components work collaboratively in a precise timing and sequence, shortening the production cycle, reducing production steps and equipment usage, minimizing errors, and improving product quality stability and consistency. It also reduces production costs and labor input, enhancing enterprise efficiency and competitiveness. Furthermore, it better adapts to special product shapes and sizes, ensuring product structural stability and reliability.

[0069] The working process of this utility model:

[0070] Before stamping, the previous process part 31 is placed on the mold. Given the tolerance requirements for the product's D dimension, and the fact that this dimension has already been stamped to the tolerance range specified in the drawing, the following positioning measure is taken to effectively control this dimension during subsequent forming: the outer diameter of the previous process part 31's D dimension is precisely placed in the step at position s of the positioning plate 42. The inner diameter of this step is designed to be within the tolerance range of the D dimension. Through this design, during the forming process, when the previous process part 31 tends to expand outwards due to force, the step structure can effectively position and protect it, preventing the D dimension of the previous process part 31 from exceeding the tolerance range. Figure 7 .

[0071] When the upper worktable of the pneumatic punch press drives the upper die to move downward, the lower die outer guide post 47 first inserts into the upper die outer guide sleeve 02, which plays a role in positioning the upper and lower dies.

[0072] Subsequently, the upper mold continues to descend, and part a of slider 24 begins to contact part r of positioning plate 42. Part f of slider 24 and part n of slider seat 21 are designed with guide slopes, and slider 24 is in a movable state. Under the specific condition that the elastic force of the ejector mechanism 05 is less than the elastic force of the second upper mold spring 12, when the upper mold continues to descend, the movable part of the upper mold will move upward and inward along the slope f of slider 24 and the slope n of slider seat 21. At the same time, part b of slider 24 is provided with an R-angle. This R-angle design allows slider 24 to slide smoothly to the previous process part 31 and, under the pressure of ejector mechanism 05, reliably presses down on the previous process part 31, preparing for subsequent molding operations.

[0073] As the upper mold continues to descend, under the action of the first upper mold spring 08, the upper mold shaping inner ejector plate 10 continues to descend after pressing down on the previous process part 31 and indirectly pressing down on the lower mold shaping block 48. Since the elastic force of the first upper mold spring 08 is smaller than that of the first lower mold spring 49, when the upper mold continues to descend, the upper mold shaping inner ejector plate 10 will close with the upper mold base 01, and at the same time, the previous process part 31 will be pressed into the upper mold forming block 11. At this time, the B dimension of the previous process part 31 is protected by both the inner diameter of the upper mold forming block 11 and the outer diameter of the lower mold shaping block 48, effectively avoiding the problem of deformation of the previous process part 31 due to lack of restraint during the forming process, which would lead to dimensional defects.

[0074] As the upper mold continues to descend, when it reaches a certain depth, part e of slider 24 engages with part p of upper mold forming block 11, leaving a clearance that allows for relative sliding. At this point, the limiting plate 50 and slider reset plate 23 begin to contact. Under the action of the reaction force, the moving part of the upper mold is pushed upward. This design has three functions: First, it prevents the positioning plate 42 from excessively pushing the slider 24, avoiding the slider 24 from getting stuck on the upper mold forming block 11 due to the influence of slider seat 21 and upper mold spring 12, ensuring smooth operation of the moving part of the mold; Second, it effectively protects the C and D dimensions of the previous process part 31 from deformation during the forming process, ensuring the accuracy and stability of the product dimensions; Third, forming after the eight sliders 24 are fully engaged solves the gap problem caused by forming before the sliders are fully engaged, avoiding mold marks on the product and ensuring appearance quality.

[0075] The upper mold continues to descend, while the movable part of the upper mold continues to push upward. At the same time, under the pressure of the upper mold shaping inner release plate 10, the lower mold shaping block 48 and the lower pad plate 51 close, and the upper mold forming block 11 and the lower mold forming block 41 begin to perform forming operations to achieve the specific shape requirements of the product.

[0076] As the upper and lower molds continue to descend and eventually close, the molding process is completed, and the shaping process is also finished, achieving the goals of molding and shaping. This series of operations is accomplished through the precise cooperation and coordinated movement of the various components of the mold, ensuring that the product achieves the shape and dimensional accuracy required by the design.

[0077] Subsequently, the upper mold begins to retract upwards, and the upper and lower molds gradually separate. During this process, the slider 24 begins to fall downwards under the action of the ejector mechanism 05. The g-section of the slider 24 and the n-section of the slider seat 21 are designed with guide slopes. When the g-section of the slider 24 contacts the m-section of the slider reset plate 23, under the combined action of the guide slope and the ejector mechanism 05, the slider 24 will move downwards and outwards along the guide slope until the a-section of the slider 24 and the k-section of the reset plate 23 are in contact, achieving the function of slider 24 ejection and reset. This design mainly ensures that the product can be ejected smoothly, avoiding the problem of the slider 24's c-section jamming the product's A-size portion, thus preventing ejection.

[0078] As the upper mold continues to retract upwards, the upper mold shaping inner ejector plate 10 and the lower mold forming block 41 eject the product, while the lower mold shaping block 48 also gradually ejects the product, thus achieving the function of material removal. At this point, product production is complete.

[0079] It is understood that, for those skilled in the art, any equivalent substitutions or modifications to the technical solutions and inventive concepts of this utility model should fall within the protection scope of the appended claims.

Claims

1. A slider forming die structure for stamping a previous process part (31) formed by a previous process, characterized in that, include: The upper mold base (01) is located above the lower mold base (46) and opens and closes relative to the lower mold base (46); The upper pad (03) is fixed to the upper mold base (01). The upper mold forming block (11) is embedded in the center of the upper pad (03). The upper mold forming block (11) is fixed to the upper mold base (01). The upper mold forming inner ejector plate (10) is embedded in the center of the upper mold forming block (11). The upper mold forming inner ejector plate (10) is slidably connected to the upper mold base (01) so that the upper mold forming inner ejector plate (10) slides relative to the upper mold forming block (11). A slider mounting assembly is slidably mounted on an upper pad (03) in a vertical direction, and a mounting slider (24) is embedded in the slider mounting assembly. The ejector mechanism (05) has one end fixed on the upper mold base (01) and the other end passes through the upper pad (03) and pushes 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) for positioning and placing the previous process part (31). The lower mold base (46), the lower pad (51) and the positioning plate (42) are fixed in sequence. The positioning plate (42) is embedded in the center of the lower mold forming block (41), and the lower mold shaping block (48) is embedded in the center of the lower mold forming block (41). The lower mold forming block (41) and the lower mold shaping block (48) are slidably connected to the lower mold base (46). When the upper mold base (01) and the lower mold base (46) are closed, the slider (24) is pressed and engaged with the upper mold forming block (11), the lower mold forming block (41) and the positioning plate (42) to stamp the previous process part (31) into the current process part (61).

2. The mold structure for slider forming 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 face (a) is provided on the lower inner side of the slider (24) for contacting the third horizontal end face (r) on the top of the positioning plate (42). A first inclined surface (f) is provided on the upper outer side 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 face (e) is provided on the upper inner side of the slider for cooperating with the first vertical end face (e) on the outer side of the upper mold forming block (11). Two vertical end faces (p) are provided. A small protrusion (c) is provided between the first horizontal end face (a) and the first vertical end face (e) of the slider (24). 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 provided on the lower outer side 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) to realize the unloading of the slider (24).

3. The mold structure for slider forming according to claim 2, characterized in that: The first horizontal end face (a) and the small protrusion (c) are connected 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). The rounded corner (b) guides the slider (24) to slide to the previous process part (31). At the same time, the ejector mechanism (05) presses the slider (24) and the previous process part (31) together.

4. The mold structure for slider forming according to claim 1, characterized in that: The upper pad (03) has an upper clamping plate (06) fixed on its lower surface. The first upper mold equalization 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 mold equalization screw (04) extends into the upper mold seat (01). A second upper mold spring (12) is installed inside the upper pad (03) and the upper clamping plate (06). One end of the second upper mold spring (12) abuts against the upper mold seat (01), and the other end abuts against the slider seat (21). A first upper mold spring (08) is installed between the upper mold shaping inner release plate (10) and the upper mold seat (01). One end of the second upper mold equalization screw (09) extends into the upper mold seat (01), and the other end passes out of the upper mold seat (01) and is fixed to the upper mold shaping inner release plate (10).

5. The mold structure for slider forming according to claim 2, characterized in that: The slider (24) is provided in eight pieces and is evenly distributed on the slider mounting assembly along the circumferential direction. When the upper mold base (01) and the lower mold base (46) open the mold, there is a gap (26) between the adjacent sliders (24). At this time, the diameter φD1 enclosed by the first vertical end face (e) of each slider (24) is greater than the first product size (A) of the part (61) in this process, which facilitates material removal. When the upper mold base (01) and the lower mold base (46) close the mold, the sliders (24) are tightly closed, so that the gap (26) is eliminated. At this time, the diameter φD2 enclosed by the first vertical end face (e) of each slider (24) is equal to the third product size (C) of the part (61) in this process.

6. The mold structure for slider forming according to claim 1, characterized in that: A limit plate (50) is fixed on the lower pad (51) by a first lower die screw (45) to limit the downward movement of the slider mounting assembly; one end of the first lower die equalizing screw (43) extends into the lower die base (46) and the other end protrudes from 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), the first lower die spring (49) passing through the lower pad (51); one end of the second lower die equalizing screw (44) extends into the lower die base (46), The other end extends out of the lower mold base (46) and is fixed to the lower mold forming block (41). A second lower mold spring (52) is provided between the lower mold forming block (41) and the lower mold base (46). The second lower mold spring (52) passes through the lower pad (51). When the upper mold base (01) and the lower mold base (46) are closed, the height of the uppermost end of the lower mold shaping block (48) is higher than the height of the lowermost end of the upper mold forming block (11), so that the second product dimension (B) of the previous process part (31) is protected by the inner diameter of the upper mold forming block (11) and the outer diameter of the lower mold shaping block (48).

7. The mold structure for slider forming according to claim 1, characterized in that: The positioning plate (42) has a step (s) at the inner diameter of the top, which is used to position the fourth product dimension (D) of the previous process part (31), and the inner diameter of the step (s) is designed to be within the tolerance range of the fourth product dimension (D).

8. The mold structure for slider forming according to claim 1, characterized in that: The upper mold base (01) is provided with several upper mold outer guide sleeves (02), and the lower mold base (46) is provided with lower mold outer guide posts (47) corresponding to the upper mold outer guide sleeves (02). When the upper mold base (01) and the lower mold base (46) are closed, the lower mold outer guide posts (47) are inserted into the upper mold outer guide sleeves (02) to realize the positioning of the upper and lower molds.

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