A stamping die facilitating bending forming

Abstract

The utility model discloses a kind of stamping die of being convenient to bending forming, including base assembly and upper die plate piece, the base assembly is equipped with lower die plate piece, the lower die plate piece is equipped with forming assembly, the forming assembly includes first forming assembly, second forming assembly, third forming assembly and fourth forming assembly from front to back in turn fixed on lower die plate piece, the utility model stamping die is punched out, end bending, double-sided punching, cutting and multi-angle bending integrated in a set of tooling and is continuously completed, avoid the drawback that multiple molds need to be processed step by step, substantially shorten production line length, save floor area, simultaneously significantly improve production efficiency and product consistency, and reduce equipment cost and process complexity.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, specifically a stamping die that is easy to bend and form. Background Technology

[0002] A stamping die is a precision tooling device mounted on a press. It is a key process equipment that applies strong pressure to blanks such as metal or non-metal sheets and profiles, causing them to separate (e.g., blanking) or undergo plastic deformation (e.g., bending, stretching, forming) within the cavity of the die. This allows for the efficient and precise manufacture of parts with specific shapes, sizes, and performance characteristics. Its core structure typically includes an upper die (fixed on the press slide), a lower die (fixed on the press worktable), guiding devices (such as guide pillars and guide sleeves to ensure alignment of the upper and lower dies), positioning components (to ensure accurate blank positioning), working parts (punches and dies that directly complete deformation or separation), and unloading and ejection mechanisms. Due to its high efficiency, high consistency, high material utilization, and ability to form complex parts, stamping dies are widely used in mass production fields such as automobile manufacturing (e.g., body panels, structural parts), electronics and electrical appliances (e.g., connectors, shielding covers), home appliances (e.g., housings, components), aerospace, and daily hardware. It is an indispensable basic technology for modern manufacturing to achieve automated and large-scale production.

[0003] As described in the published patent "Multi-angle bending cold stamping forming die structure" with publication number CNU, there are various ways to cold stamp form sheet metal products. The die structure is designed to suit the different structures that the sheet metal products need to form. In order to adapt to the multi-angle bending effect of sheet metal products, multiple sets of dies are often used. In particular, after the sheet metal products are bent at a 90° angle, there is still an irregular stamping operation. Therefore, for the irregular stamping operation after the right-angle stamping of sheet metal products, a matching structure that can be bent multiple times in one die needs to be designed.

[0004] As described in the published patent "A Multi-Angle Bending Equipment for Automotive Hardware Parts" with publication number "CNU", bending is one of the basic processes in stamping and a widely used process in stamping forming. In the production of some automotive hardware parts, it is necessary to perform forward and reverse multi-angle bending. During the bending process, due to the limitation of material deformation, if bending is performed simultaneously, the material flow will be mutually restrained, and the phenomenon of bending cracks is very easy to occur during the bending process. Therefore, multiple sets of molds are usually used to gradually form the parts, which results in a long production cycle, low efficiency, and high manufacturing cost.

[0005] In summary, existing stamping die structures often employ multiple sets of dies to accommodate the multi-angle bending effects of sheet metal products, resulting in excessively long production lines and large floor space requirements. Utility Model Content

[0006] To overcome the shortcomings mentioned above, this utility model aims to provide a stamping die that is easy to bend and form, thus solving the aforementioned problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A stamping die that is easy to bend and form includes a base assembly and an upper template, wherein a lower template is provided on the base assembly and a forming assembly is provided on the lower template;

[0009] The molding assembly includes a first molding assembly, a second molding assembly, a third molding assembly, and a fourth molding assembly, which are fixed to the lower template component from front to back.

[0010] The first forming component includes a first forming block fixed on the lower template, the first forming block having a first forming groove, and the upper template having a first punch head that aligns with the first forming groove. The first punch head is used for the first punching of the rear end of the blank.

[0011] The second forming component includes a second forming block fixed on the lower template, the second forming block having a second forming groove, and the upper template having a second punch head that aligns with the second forming groove. The second punch head is used for the first bending of the rear end of the blank.

[0012] The third forming component includes a third forming block fixed on the lower template, the third forming block having a third forming groove symmetrically arranged on the left and right, and a third punching head on the upper template having a third forming groove aligned with the third forming groove. The third punching head is used for punching the two sides of the blank.

[0013] The fourth forming component includes a fourth forming block fixed on the lower template, a fourth stamping head on the upper template that aligns with the front and rear ends of the fourth forming block, and a transverse stamping component fixed on the lower template that aligns with the rear side wall of the fourth forming block. The fourth stamping head is used to cut the front end of the blank from the strip, and simultaneously completes the first bending of the front end of the blank and the second bending of the rear end of the blank. The transverse stamping component aligns with the rear side wall of the fourth forming block for the third bending of the rear end of the blank.

[0014] As a further embodiment of this utility model: the base assembly includes a base component, the base component is provided with multiple T-shaped guide rails, the base component is provided with a base plate component, the base plate component is provided with multiple positioning holes that are aligned and matched with the T-shaped guide rails one by one, the positioning holes are provided with bolts that are locked and matched with the T-shaped guide rails, and the lower template component is fixed on the base plate component.

[0015] As a further embodiment of this utility model: a clearance groove is preset between the third forming block and the fourth forming block, the third forming groove is symmetrically arranged on both sides of the clearance groove and communicates with the clearance groove, and the third stamping head includes a left cutting plate and a right stamping plate symmetrically arranged on the left and right sides, the left stamping plate and the right stamping plate respectively punching and cooperating with the third forming groove.

[0016] As a further embodiment of this utility model: the fourth punch head includes a front punch head and a rear punch head respectively disposed at the front end and rear end of the fourth forming block. An auxiliary punching block is provided in the clearance groove, which is aligned and cooperates with the front side wall of the front punch head. The front end of the front punch head is provided with a cutting edge, and the rear end of the front punch head is provided with a bending part. The cutting edge extends downward from the bending part and is aligned and cooperates with the rear side wall of the auxiliary punching block.

[0017] As a further embodiment of this utility model: the rear end stamping head extends downward, and the rear end stamping head cooperates with the rear end sidewall of the fourth stamping head for secondary bending of the rear end of the blank, and the lower end of the rear end stamping head is provided with a raised arc-shaped protrusion.

[0018] As a further embodiment of this utility model: the rear end sidewall of the fourth molding block is provided with an arc-shaped molding groove, and the upper and lower ends of the arc-shaped molding groove are respectively provided with arc-shaped transition portions integrally formed with the rear end sidewall of the fourth molding block.

[0019] As a further embodiment of this utility model: the transverse stamping assembly includes a stamping cylinder fixed on the lower template, and a stamping rod fixed on the working shaft of the stamping cylinder to stamp with the arc-shaped forming groove. The end of the stamping rod is formed with an arc-shaped stamping block that matches the contour of the arc-shaped forming groove. The arc-shaped forming groove and the arc-shaped stamping block are respectively inclined upward to match.

[0020] As a further embodiment of this utility model: the upper template is provided with a guide shaft around its perimeter, and the lower template is provided with a guide hole that aligns with the guide shaft.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] This utility model of stamping die integrates blank punching, end bending, double-sided punching, cutting, and multi-angle bending into a single tooling for continuous completion. This avoids the drawbacks of requiring multiple sets of dies for step-by-step processing, significantly shortens production line length, saves floor space, and at the same time significantly improves production efficiency and product consistency, while reducing equipment costs and process complexity. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural view of the present invention;

[0024] Figure 2 This is another three-dimensional view of the structure of this utility model;

[0025] Figure 3 yes Figure 2 A partial view at point A in the middle;

[0026] Figure 4 This is a top view of the present invention;

[0027] Figure 5 yes Figure 4 A cross-sectional view along the DD direction;

[0028] Figure 6 yes Figure 5 A partial view at point B in the middle;

[0029] Figure 7 Another three-dimensional view of the structure of this utility model;

[0030] Figure 8 yes Figure 7 A partial view at point C;

[0031] Figure 9 This is a schematic diagram of the processing state of the blank in this utility model;

[0032] The reference numerals and names in the figure are as follows:

[0033] Base assembly - 100, lower template component - 101, upper template component - 102, forming assembly - 103, first forming assembly - 104, second forming assembly - 105, third forming assembly - 106, fourth forming assembly - 107, first forming block - 108, first forming groove - 109, first stamping head - 110, second forming block - 111, second forming groove - 112, second stamping head - 113, third forming block - 114, third forming groove - 115, third stamping head - 116, fourth forming block - 117, fourth stamping head - 118, horizontal The components include: stamping assembly-119, base piece-120, T-shaped guide rail-121, base plate piece-122, positioning hole-123, clearance groove-125, left punching plate-126, right punching plate-127, front punching head-128, rear punching head-129, auxiliary punching block-130, cutting edge-131, bending part-132, arc-shaped protrusion-133, arc-shaped forming groove-134, arc-shaped transition part-135, stamping cylinder piece-136, stamping rod-138, arc-shaped stamping block-139, guide shaft-140, and guide hole-141. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Please see Figure 1-9 A stamping die that is easy to bend and form includes a base assembly 100 and an upper template 102. The base assembly 100 is provided with a lower template 101, and the lower template 101 is provided with a forming assembly 103.

[0036] The molding assembly 103 includes a first molding assembly 104, a second molding assembly 105, a third molding assembly 106 and a fourth molding assembly 107, which are fixed to the lower template 101 from front to back.

[0037] The first forming component 104 includes a first forming block 108 fixed on the lower template 101, a first forming groove 109 provided on the first forming block 108, and a first punching head 110 provided on the upper template 102 that is aligned and engaged with the first forming groove 109. The first punching head 110 is used for the first punching of the rear end of the blank.

[0038] The second forming component 105 includes a second forming block 111 fixed on the lower template 101. The second forming block 111 is provided with a second forming groove 112. The upper template 102 is provided with a second punch head 113 that is aligned and cooperates with the second forming groove 112. The second punch head 113 is used for the first bending of the rear end of the blank.

[0039] The third forming component 106 includes a third forming block 114 fixed on the lower template 101. The third forming block 114 is provided with a third forming groove 115 symmetrically arranged on the left and right sides. The upper template 102 is provided with a third punching head 116 that is aligned and cooperates with the third forming groove 115. The third punching head 116 is used for punching the two sides of the blank.

[0040] The fourth forming component 107 includes a fourth forming block 117 fixed on the lower template 101, a fourth stamping head 118 provided on the upper template 102 that aligns with the front and rear ends of the fourth forming block 117, and a transverse stamping component 119 fixed on the lower template 101 that aligns with the rear end sidewall of the fourth forming block 117. The fourth stamping head 118 is used to cut the front end of the blank from the strip, and simultaneously completes the first bending of the front end of the blank and the second bending of the rear end of the blank. The transverse stamping component 119 aligns with the rear end sidewall of the fourth forming block 117 for the third bending of the rear end of the blank.

[0041] This utility model stamping die integrates first, second, third and fourth forming components 107 on the lower template 101, and works with the corresponding stamping head on the upper template 102 and the unique transverse stamping component 119 to realize continuous and sequential processing of the blank in a single die.

[0042] First, the first forming component 104 completes the initial punching of the rear end of the blank; the blank is stably moved and fed in one direction by an external feeding mechanism (a common technology in the prior art); second, the second forming component 105 performs a precise first bend (such as pre-bending angle) on the rear end of the blank; then, the third forming component 106 symmetrically punches both sides of the blank to form the required contour; finally, the fourth forming component 107 works in coordination to complete the cutting and separation of the front end of the blank from the strip in one go, and simultaneously completes the first bend of the front end of the blank and the second bend of the rear end of the blank, and uses the transverse stamping component 119 to perform a third bend (such as lateral flanging or irregular bending) on ​​the rear end of the partially formed blank; this highly integrated structural design completely avoids the traditional mode of multi-angle complex bending parts that requires multiple sets of molds, multiple clamping, and step-by-step production on different presses or stations, thereby significantly shortening the production process, greatly reducing the equipment footprint, reducing mold investment and maintenance costs, improving production cycle and efficiency, while ensuring high-precision positioning and consistent product forming quality between multiple processes;

[0043] The key processes that originally required multiple sets of molds to complete, such as blank punching (initial and both sides), rear bending, cutting, front bending, rear secondary bending, and rear tertiary bending, are precisely integrated into four continuous stations (first to fourth forming components 107) of one mold.

[0044] The transverse stamping component 119 in the fourth forming component 107 is a key technological highlight. It is specifically designed to apply pressure from the side to complete a third bend (such as flanging or irregular angle) after the blank has undergone a previous bend (which may have reached 90 degrees). This design cleverly avoids the risks of material flow conflict, wrinkling or tearing that may be caused by performing multi-directional bending at the same location at the same time (such as the bending crack problem mentioned in CN206661996U), and achieves stable forming of complex spatial angle structures. This design is particularly suitable for complex sheet metal products that require multiple bends (especially including lateral or irregular bends after 90-degree bends) and precise punching (such as automotive hardware parts, electronic connectors, etc. mentioned in the background art), meeting the modern manufacturing needs of completing all forming in one mold.

[0045] This utility model of stamping die integrates blank punching, end bending, double-sided punching, cutting, and multi-angle bending into a single tooling for continuous completion. This avoids the drawbacks of requiring multiple sets of dies for step-by-step processing, significantly shortens production line length, saves floor space, and at the same time significantly improves production efficiency and product consistency, while reducing equipment costs and process complexity.

[0046] In this embodiment of the utility model, the base assembly 100 includes a base component 120, a plurality of T-shaped guide rails 121 are provided on the base component 120, a base plate component 122 is provided on the base component 120, a plurality of positioning holes 123 are provided on the base plate component 122 to align with the T-shaped guide rails 121 one by one, and bolts that lock with the T-shaped guide rails 121 are installed in the positioning holes 123. The lower template component 101 is fixed on the base plate component 122.

[0047] In this utility model, the base plate component 122 (with the lower template component 101 and forming component 103 fixedly mounted) of the stamping die can be flexibly slidably adjusted along the T-shaped guide rail 121, and then rigidly locked with bolts through the positioning hole 123. This not only significantly simplifies the adjustment process of the die components and improves the alignment accuracy of multiple stations, but also enhances the overall structure's resistance to deformation. It not only meets the precise positioning requirements of different forming stations in the processing of complex parts, but also greatly improves the maintenance efficiency and service life of the die, effectively avoiding the problem of repeated manufacturing caused by the difficulty in adjusting traditional welding or integral bases.

[0048] In this embodiment of the present invention, a clearance groove 125 is pre-set between the third forming block 114 and the fourth forming block 117. The third forming groove 115 is symmetrically arranged on both sides of the clearance groove 125 and communicates with the clearance groove 125. The third stamping head 116 includes a left punching plate 126 and a right stamping plate 127 symmetrically arranged on the left and right sides. The left stamping plate and the right stamping plate 127 are respectively punched and cooperated with the third forming groove 115.

[0049] In this utility model, the stamping die has a pre-set clearance groove 125 and a symmetrical arrangement of double-sided punching structures to ensure smooth execution of multiple bending processes. The symmetrically connected third forming groove 115 works in conjunction with the split left and right punching plates to make the punching force on both sides of the blank balanced, avoiding material distortion or positioning offset caused by unilateral stress. At the same time, the left punching plate 126 and the right stamping plate 127 symmetrically punch both sides of the blank to form the blank into the contour required by the target product.

[0050] In this embodiment of the present invention, the fourth punching head 118 includes a front punching head 128 and a rear punching head 129 respectively disposed at the front end and rear end of the fourth forming block 117. An auxiliary punching block 130 is provided in the relief groove 125 and is aligned with the front side wall of the front punching head 128. The front end of the front punching head 128 is provided with a cutting edge 131, and the rear end of the front punching head 128 is provided with a bending part 132. The cutting edge 131 extends downward from the bending part 132 and is aligned with the rear side wall of the auxiliary punching block 130.

[0051] In this utility model of stamping die, the fourth stamping head 118 is decomposed into independent front and rear stamping heads, and an auxiliary punching block 130 is added in the clearance groove 125, so that the front stamping head 128 integrates the composite functions of the cutting edge 131 (extending downward) and the bending part 132. The cutting edge 131 and the auxiliary punching block 130 work together to complete the precision cutting of the blank, while the bending part 132 immediately bends the front end of the cut blank. This design not only realizes the seamless connection of the cutting and bending processes in the same station, eliminating the risk of material displacement in traditional step-by-step processing, but also effectively suppresses punching vibration through the rigid support of the cutting edge 131 by the auxiliary punching block 130, ensuring the stability of the bending angle and the quality of the cut, while the clearance groove 125 provides a smooth channel for the waste material to fall.

[0052] In this embodiment of the present invention, the rear end stamping head 129 extends downward, and the rear end stamping head 129 cooperates with the rear end sidewall of the fourth stamping head 118 for secondary bending of the rear end of the blank. The lower end of the rear end stamping head 129 is provided with a raised arc-shaped protrusion 133.

[0053] In this utility model, the arc-shaped protrusion 133 at the end of the rear stamping head 129 significantly disperses bending stress through the gradual contact between the arc-shaped contour and the blank during the secondary bending process at the rear end of the blank, avoiding the risk of micro-cracks in the material caused by right-angle bending. The radius of curvature of the protrusion precisely matches the target bending angle, allowing the metal fibers to extend evenly and improving the consistency of the bending angle. This ensures precise connection between the secondary bending and the front-end process, ultimately achieving better stability under high-speed continuous stamping.

[0054] In this embodiment of the present invention, the rear end sidewall of the fourth molding block 117 is provided with an arc-shaped molding groove 134, and the upper and lower ends of the arc-shaped molding groove 134 are respectively provided with arc-shaped transition portions 135 integrally formed with the rear end sidewall of the fourth molding block 117.

[0055] In this utility model, the stamping die is designed in a coordinated manner by forming an arc-shaped forming groove 134 and an integral arc-shaped transition part 135. The curvature of the arc-shaped forming groove 134 is precisely matched with the movement trajectory of the transverse stamping component 119, so that the blank is smoothly deformed along the predetermined arc under lateral pressure, completely eliminating the stress concentration risk of traditional right-angle bending. The arc-shaped transition part 135, which is integrally formed at the upper and lower ends, guides the continuous extension of material fibers through seamless curvature connection, avoiding micro-cracks caused by step deformation.

[0056] In this embodiment of the present invention, the transverse stamping assembly 119 includes a stamping cylinder 136 fixed on the lower template 101. A stamping rod 138 is fixed on the working shaft of the stamping cylinder 136 and is stamped in conjunction with the arc-shaped forming groove 134. An arc-shaped stamping block 139 adapted to the contour of the arc-shaped forming groove 134 is formed at the end of the stamping rod 138. The arc-shaped forming groove 134 and the arc-shaped stamping block 139 are respectively inclined upwards to adapt to each other.

[0057] In this utility model, the upwardly inclined arc-shaped forming groove 134 and the arc-shaped stamping block 139 form a directional guiding channel, so that the lateral force of the three bends is accurately decomposed into horizontal bending force and vertical pressing force, reducing the instantaneous stress in the horizontal direction when bending thin-walled parts; the cylinder-driven flexible stamping can dynamically adjust the pressure curve to adapt to different material thicknesses and springback characteristics.

[0058] In this embodiment of the utility model, the upper template 102 is provided with a guide shaft 140 around its perimeter, and the lower template 101 is provided with a guide hole 141 that aligns with the guide shaft 140.

[0059] The high-precision guiding structure in this stamping die ensures strict alignment of the upper and lower dies in each stroke, completely eliminating the cumulative positioning deviation of multi-process composite stamping; the rigid guiding system effectively resists the lateral torque generated by the transverse stamping assembly 119 and suppresses bending angle fluctuations caused by the elastic deformation of the die.

[0060] In one embodiment, when the fourth stamping head 118 has finished stamping, during the process of the upper template 102 resetting upward, the rear stamping head 129 moves upward past the arc-shaped forming groove 134 but does not detach from the rear side wall of the fourth forming block 117. At this time, the rear stamping head 129 and the front stamping head 128 are still in contact with the blank, and the guide shaft 140 is still aligned with the guide hole 141. At this time, the transverse stamping assembly 119 can perform stable stamping operations.

[0061] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A press die for facilitating draw bending, characterized by, It includes a base assembly and an upper template component, wherein a lower template component is provided on the base assembly, and a forming component is provided on the lower template component; The molding assembly includes a first molding assembly, a second molding assembly, a third molding assembly, and a fourth molding assembly, which are fixed to the lower template component from front to back. The first forming component includes a first forming block fixed on the lower template, the first forming block having a first forming groove, and the upper template having a first punch head that aligns with the first forming groove. The first punch head is used for the first punching of the rear end of the blank. The second forming component includes a second forming block fixed on the lower template, the second forming block having a second forming groove, and the upper template having a second punch head that aligns with the second forming groove. The second punch head is used for the first bending of the rear end of the blank. The third forming component includes a third forming block fixed on the lower template, the third forming block having a third forming groove symmetrically arranged on the left and right, and a third punching head on the upper template having a third forming groove aligned with the third forming groove. The third punching head is used for punching the two sides of the blank. The fourth forming component includes a fourth forming block fixed on the lower template, a fourth stamping head on the upper template that aligns with the front and rear ends of the fourth forming block, and a transverse stamping component fixed on the lower template that aligns with the rear side wall of the fourth forming block. The fourth stamping head is used to cut the front end of the blank from the strip, and simultaneously completes the first bending of the front end of the blank and the second bending of the rear end of the blank. The transverse stamping component aligns with the rear side wall of the fourth forming block for the third bending of the rear end of the blank.

2. The press die for facilitating the bending forming according to claim 1, wherein The base assembly includes a base component, on which multiple T-shaped guide rails are provided. A base plate component is provided on the base component, and multiple positioning holes are provided on the base plate component to align with the T-shaped guide rails one by one. Bolts that lock into the T-shaped guide rails are installed in the positioning holes. The lower template component is fixed on the base plate component.

3. The press die for facilitating the bending forming according to claim 2, wherein A clearance groove is pre-set between the third forming block and the fourth forming block. The third forming groove is symmetrically arranged on both sides of the clearance groove and communicates with the clearance groove. The third stamping head includes a left cutting plate and a right stamping plate arranged symmetrically on the left and right sides. The left stamping plate and the right stamping plate are respectively punched and fitted with the third forming groove.

4. A stamping die for easy bending and forming according to any one of claims 1-3, characterized in that, The fourth punching head includes a front punching head and a rear punching head respectively located at the front and rear ends of the fourth forming block. An auxiliary punching block is provided in the clearance groove, which is aligned with the front side wall of the front punching head. The front end of the front punching head is provided with a cutting edge, and the rear end of the front punching head is provided with a bending part. The cutting edge extends downward from the bending part and is aligned with the rear side wall of the auxiliary punching block.

5. A stamping die for easy bending and forming according to claim 4, characterized in that, The rear stamping head extends downwards, and the rear sidewall of the rear stamping head cooperates with the rear sidewall of the fourth stamping head for secondary bending of the rear end of the blank. The lower end of the rear stamping head is provided with a raised arc-shaped protrusion.

6. A stamping die for easy bending and forming according to claim 5, characterized in that, The fourth molding block has an arc-shaped molding groove on its rear end sidewall, and the upper and lower ends of the arc-shaped molding groove have arc-shaped transition parts integrally formed with the rear end sidewall of the fourth molding block.

7. A stamping die for easy bending and forming according to claim 6, characterized in that, The transverse stamping assembly includes a stamping cylinder fixed on the lower template. A stamping rod is fixed on the working shaft of the stamping cylinder to stamp with the arc-shaped forming groove. The end of the stamping rod is formed with an arc-shaped stamping block that matches the contour of the arc-shaped forming groove. The arc-shaped forming groove and the arc-shaped stamping block are respectively inclined upward to match.

8. A stamping die for easy bending and forming according to claim 7, characterized in that, The upper template is provided with guide shafts around its perimeter, and the lower template is provided with guide holes that align with the guide shafts.

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