Punching needle for punching die, punching die and punching system
By designing a separate punching pin and die structure, the problems of poor versatility and insufficient stability of existing punching dies are solved, and the stability and low-cost adaptability of multi-pattern punching are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN CHNKI IND GRP CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-04-24
AI Technical Summary
The punching pins of existing punching dies are short and unstable, making them prone to breakage during the stamping process. They also have poor versatility, requiring the replacement of the entire die to meet different graphic requirements, which is costly.
The punching needle is designed as a rod-shaped structure, with the connecting part and the needle shank part being separate. The outer diameter of the connecting part is larger than that of the needle shank part. Different materials are used for welding. The connecting part is easy to process with external threads, and the needle shank part has high hardness. By installing and adjusting the position through threads, combined with the design of the base plate, aligning plate and constraint plate, the punching requirements of different shapes can be met.
It improves the stability and versatility of punching pins, reduces costs, avoids breakage, and enables the same set of molds to meet the punching needs of various shapes.
Smart Images
Figure CN224157613U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of stamping die technology, specifically to a punching pin, a punching die, and a stamping system for a punching die. Background Technology
[0002] Perforation is a process that uses specific tools or equipment to create holes of predetermined shapes, sizes, and arrangements on fabric, forming decorative, functional, or artistic patterns. It has wide applications in daily life; for example, in automotive interiors, perforation plays an indispensable role in enhancing the driving experience and aesthetic value. Precise perforation design on seat surfaces creates an array of breathable holes, effectively reducing stuffiness and improving comfort. Combinations of different shapes and arrangements of holes can also create brand-specific patterns or fashionable textures, enhancing the sophistication and personalization of the interior. Perforation on door panels and steering wheel leather covers not only gives the product a unique visual layer but also reduces component weight, optimizing the vehicle's lightweight design. Similarly, in the leather goods industry, whether for bags, clothing, or furniture, perforation is a key process. Processing geometric shapes, floral patterns, and abstract art designs on leather not only adds decoration but also meets the needs of structural fixation and cultural and artistic expression, giving leather products both functionality and artistry.
[0003] In the prior art, a press (or stamping equipment) is usually used to drive a punching die to punch holes in the fabric. The existing punching die is usually equipped with multiple punching pins, which together form a certain pattern. Finally, the pattern is presented on the fabric by punching. However, in existing punching dies, the punch pin and the die are integrated. Although the punch pin is thin, its length is short, which can meet the needs of stamping specific patterns. Existing punching dies can usually only produce one pattern. When other patterns are needed, the entire punching die must be replaced, resulting in poor versatility and high cost. To solve this problem, the punch pin can be designed to be adjustable in position, so that different patterns can be achieved by adjusting the position of the punch pin. This would allow a single punching die to meet the stamping needs of different patterns. However, in this design, the punch pin needs to be designed to be easy to install and adjust, and it needs to be designed to be longer. Since the outer diameter of the punch pin is small (some punch pins even have an outer diameter of less than 1 mm), when the length of the punch pin is increased, the punch pin becomes very unstable during the stamping process and is very prone to breakage. Therefore, the existing punch pins do not meet the requirements and urgently need to be solved. Summary of the Invention
[0004] The first aspect of this utility model is to solve the above-mentioned technical problems by providing a punching pin for punching dies, which is not only easy to install and adjust, but also has stable performance and is not prone to breakage.
[0005] A punching pin for a punching die is constructed as a rod-shaped structure, including a connecting part and a pin shank. The outer diameter of the connecting part is larger than that of the pin shank. The connecting part has external threads on its outer side. One end of the connecting part has a torsion part adapted to a torsion tool. The other end of the connecting part is welded to the pin shank. Both the connecting part and the pin shank are metal parts, and the hardness of the pin shank is greater than that of the connecting part. In this solution, by constructing the punching pin as a rod-shaped structure, it can adapt to the holes in the punching die. By configuring the punching pin as composed of a connecting part and a pin shank by welding, the connecting part and the pin shank can be made of different materials. This facilitates the machining of external threads, avoiding the problem of high machining costs or even inaccurate machining of internal threads caused by using a high-hardness material for the entire part. It also improves the stability of the pin shank, resulting in superior performance for the entire punching pin. By constructing external threads on the outer side of the connecting part, the punching pin can be installed in the punching die or its position adjusted in the punching die via the threads, thus facilitating the use of the same punching die. The design meets the needs of different punching patterns and significantly reduces costs. By making the outer diameter of the connecting part larger than that of the needle shank, it is not only easier to process external threads, but also increases the contact area between the connecting part and the punching die, making it easier to securely fix the punching needle in the punching die using external threads. By configuring both the connecting part and the needle shank as metal parts, and configuring the hardness of the needle shank to be greater than that of the connecting part, the strength of the needle shank is also better, making it less prone to breakage during the punching process. This allows the punching needle to be made longer while ensuring its performance and meeting punching requirements, enabling the punching needle to meet the needs of new punching dies.
[0006] Preferably, the connecting part uses a low-carbon steel shaft, a free-cutting steel shaft, or an aluminum alloy shaft. This results in a relatively low hardness in the connecting part, which not only facilitates the machining of external threads on the connecting part, significantly reducing the machining difficulty and effectively improving the yield rate, but also greatly reduces the cost of the connecting part.
[0007] Preferably, the needle bar is made of high-strength alloy steel, high-hardness stainless steel, high-temperature alloy, or cemented carbide. This gives the needle bar higher hardness and relatively better strength, making it less prone to breakage during punching and effectively improving its reliability and service life.
[0008] Preferably, the needle rod is made of tungsten steel. It has high hardness and higher strength and rigidity, preventing breakage during the punching process.
[0009] Preferably, the outer diameter of the needle bar is 0.5mm-10mm.
[0010] Preferably, the outer diameter of the needle bar is 0.9 mm, 1.0 mm, 1.1 mm, or 1.2 mm.
[0011] Preferably, the connecting part is constructed as a cylindrical structure, the needle bar is constructed as a cylindrical structure, and the connecting part and the needle bar are coaxial.
[0012] Preferably, the twisting part is an inner square, inner hexagon, cross groove, or plum blossom groove to accommodate twisting tools.
[0013] The second aspect of this utility model addresses the problem of improving the versatility of punching dies by providing a punching die, including the aforementioned punching pin, a base plate, a straightening plate, and a constraint plate. The base plate has an array of mating holes, comprising multiple mating holes arranged in an array, each punching hole penetrating both the upper and lower ends of the base plate. The straightening plate has an array of straightening holes, comprising multiple straightening holes arranged in an array, each straightening hole penetrating both the upper and lower ends of the straightening plate, with the inner diameter of the straightening hole being larger than the outer diameter of the pin shank of the punching pin. The constraint plate has an array of constraint holes, comprising multiple constraint holes arranged in an array, each constraint hole having an internal thread adapted to the punching pin, each constraint hole penetrating both the upper and lower ends of the constraint plate. The constraint plate is detachably mounted above the straightening plate, and the straightening plate is vertically and vertically mounted on the base plate. Each constraint hole corresponds to a corresponding straightening hole, and each straightening hole corresponds to a corresponding mating hole. The connecting part of the punching pin is detachably connected to the constraint hole, and the pin shank of the punching pin is inserted into the straightening hole. In this solution, punching pins can be installed or arranged according to the actual shape, so that the punching pins work together to form the required shape. This allows the punching die to meet the punching requirements of different shapes, making it highly versatile and greatly reducing the cost of the die.
[0014] Furthermore, the base plate is provided with at least two guide posts arranged vertically, and the aligning plate is constructed with at least two guide holes that mate with the guide posts. The aligning plate is fitted onto the guide posts through the guide holes, and the guide holes and guide posts form a sliding pair in the vertical direction. This ensures that the aligning plate and the constraint plate can only move vertically relative to the base plate, and cannot translate or rotate relative to the base plate. This ensures that each aligning hole and each mating hole always correspond one-to-one and are coaxial, which helps to guarantee and improve the accuracy of punching.
[0015] Preferably, the length of the connecting part in the punch pin is adapted to the depth of the constraint hole, and the length of the pin shank in the punch pin is greater than the depth of the alignment hole in the alignment plate. When the punch pin is threaded into the constraint hole, the lower end of the punch pin extends out of the lower surface of the alignment plate through the alignment hole. This allows the user to simply install the punch pin at the corresponding position in the constraint hole array according to the required pattern during actual use. The lower ends of the installed punch pins all protrude from the lower surface of the alignment plate and together form the required pattern. Therefore, when it is necessary to change the punching pattern, it is only necessary to remove the excess punch pin and install a punch pin at the corresponding position, thereby meeting the punching requirements of different patterns. It has excellent versatility and can greatly reduce mold costs.
[0016] Preferably, the length of the connecting portion in the punching pin is less than the depth of the constraint hole, and the length of the pin shank in the punching pin is greater than the depth of the alignment hole in the alignment plate, but less than the sum of the depths of the alignment hole and the constraint hole. This allows the lower end of the punching pin to be retracted into the alignment hole during the adjustment of the punching pin height to avoid contact with the fabric, or it can extend beyond the alignment hole to contact the fabric and achieve the punching purpose. In practical use, the user only needs to adjust the corresponding punching pin at the corresponding position in the constraint hole array according to the required pattern, so that the lower ends of the punching pins at the corresponding positions protrude from the lower surface of the alignment plate and together form the required pattern. Therefore, when it is necessary to change the punching pattern, only the position of the punching pin needs to be adjusted to form the corresponding pattern, thus meeting the punching requirements of different patterns, exhibiting excellent versatility, and significantly reducing mold costs.
[0017] A stamping system includes a press and the punching die.
[0018] Compared with the prior art, the punching pin, punching die and stamping system provided by this utility model are not only easy to install and adjust, but also have stable performance and are not prone to breakage. It is also beneficial to make the punching pin longer while ensuring the performance of the punching pin and meeting the punching requirements, so that the punching pin can meet the needs of new punching dies. Attached Figure Description
[0019] Figure 1 This is a three-dimensional structural diagram of a punching needle provided in Embodiment 1 of this utility model.
[0020] Figure 2 for Figure 1 The main view.
[0021] Figure 3 for Figure 2 Top view.
[0022] Figure 4This is a schematic diagram of the structure of a base plate in a punching die provided in Embodiment 2 of this utility model.
[0023] Figure 5 This is a schematic diagram of the structure of a straightening plate in a punching die provided in Embodiment 2 of this utility model.
[0024] Figure 6 This is a schematic diagram of the structure of a constraint plate in a punching die provided in Embodiment 2 of this utility model.
[0025] Figure 7 This is a schematic diagram of the structure of a punching die provided in Embodiment 2 of this utility model.
[0026] Figure 8 To utilize Figure 7 The diagram shown illustrates the punching die used to punch holes in fabric.
[0027] Figure 9 for Figure 8 The left view.
[0028] Figure 10 for Figure 9 A partial sectional view at point AA.
[0029] Figure 11 for Figure 9 Another partial sectional view at point AA.
[0030] Figure 12 for Figure 9 Another partial sectional view at point AA.
[0031] The markings in the diagram are as follows: punching needle 1, connecting part 11, needle bar part 12, external thread 13, torsion part 14; base plate 2, mating hole array 21, mating hole 22, guide post 23; aligning plate 3, aligning hole array 31, aligning hole 32, guide hole 33; constraint plate 4, constraint hole array 41, constraint hole 42, internal thread 43; fabric 6. Detailed Implementation
[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0033] Example 1
[0034] This embodiment provides a punching pin for a punching die, the entire structure of which is a rod-shaped structure, such as... Figures 1-3 As shown, so that it can be assembled in the punching die.
[0035] In this embodiment, the punching needle 1 includes a connecting portion 11 and a needle shank portion 12 connected to the connecting portion 11, such as... Figures 1-3 As shown, the connecting part 11 is preferably constructed as a cylindrical structure, and the connecting part 11 is constructed with external threads 13, while the needle bar part 12 is not constructed with external threads 13, and the needle bar part 12 is preferably constructed as a cylindrical structure so as to allow the punching needle 1 to rotate during use; as Figures 1-3 As shown, one end of the connecting part 11 is equipped with a torsion part 14 adapted to a torsion tool, so that during use, the punch pin 1 can be easily rotated by means of the torsion tool and the torsion part 14, so as to install, remove or adjust the position of the punch pin 1. In practice, the torsion part 14 can be an inner square, inner hexagon, cross groove, or star groove, etc. Figure 1 and Figure 3 As shown, the twisting tool can be a handle or screwdriver adapted to the twisting part 14.
[0036] like Figures 1-3 As shown, the other end of the connecting part 11 is connected to one end of the needle bar part 12, and the connecting part 11 and the needle bar part 12 are coaxial. In practice, the other end of the needle bar part 12 (as shown below) can be constructed as a plane, such as... Figures 1-3 As shown, during use, the lower end of the punching needle 1 contacts the fabric 6, and punches the required hole in the fabric 6 using punching pressure; of course, in other embodiments, the lower end of the punching needle 1 can also be constructed as a bevel or other irregular structure, as long as the purpose of punching can be achieved, and will not be described in detail here.
[0037] In implementation, the outer diameter of the needle bar 12 can be determined according to actual needs. In a preferred embodiment, the outer diameter of the needle bar 12 is preferably controlled to be 0.5mm-10mm. For example, the outer diameter of the needle bar 12 can be preferably controlled to be 0.9mm, 1.0mm, 1.1mm, or 1.2mm, etc.
[0038] In practice, the outer diameter of the connecting part 11 is preferably constructed to be larger than the outer diameter of the needle bar part 12, such as Figures 1-3 As shown, this not only makes it easier to process the external thread 13, but also makes the contact area between the connecting part 11 and the punching die larger, which is more conducive to using the external thread 13 to securely fix the punching needle 1 in the punching die. The outer diameter of the connecting part 11 can be determined according to actual needs. For example, the outer diameter of the connecting part 11 is preferably 4mm, 6mm or 8mm. As an example, in this embodiment, the outer diameter of the needle bar 12 is 1.0mm and the outer diameter of the connecting part 11 is 4mm.
[0039] In this embodiment, the punch pin 1 is not a one-piece component, but a composite component. Specifically, in this embodiment, since the connecting part 11 needs to be machined with external threads 13, and the connecting part 11 usually does not directly collide with the base plate 2 in the punching die, the connecting part 11 can preferably be made of a metal material with lower hardness to facilitate the machining of external threads 13. For example, the connecting part 11 can preferably be made of low-carbon steel (such as Q235, 20 steel), free-cutting steel (such as Y12, Y20), and aluminum alloy, etc., so that the hardness of the connecting part 11 is relatively low. This not only makes it easier to machine external threads 13 on the connecting part 11, significantly reducing the machining difficulty and effectively improving the yield rate, but also greatly reduces the cost of the connecting part 11. As an example, in this embodiment,
[0040] Because the needle shank 12 is relatively long and typically quite thin (for example, in some cases, its outer diameter is only about 1 mm), and because it bears a large load during punching, and since threads are not required on it, in this embodiment, the needle shank 12 can preferably be made of a harder metal material. For example, it can be made of high-strength alloy steel, high-hardness stainless steel, high-temperature alloys, and hard alloys (such as tungsten-cobalt alloys (YG6, YG8), tungsten-titanium-cobalt alloys (YT15), etc.). This gives the needle shank 12 higher hardness, making it less prone to breakage during punching and effectively improving its reliability and service life. For example, in this embodiment, the connecting part 11 can be made of low-carbon steel to facilitate the machining of the external thread 13, while the needle shank 12 is made of tungsten steel, which has high hardness and higher strength and rigidity, preventing breakage during punching.
[0041] The punching needle 1 provided in this embodiment is made of two materials with different hardnesses. Therefore, in implementation, the connecting part 11 and the needle shank part 12 are connected together by welding. For example, in this embodiment, the end of the threaded section and the end of the needle shank part 12 are butt-welded together by friction welding. Figure 1 and Figure 2 As shown, not only is the welding process simpler and more efficient, but the weld is also more reliable.
[0042] Example 2
[0043] This embodiment 2 provides a punching die, including the punching pin 1 described in embodiment 1, and also including a base plate 2, a straightening plate 3, and a constraint plate 4, as shown below. Figures 4-7 As shown, the base plate 2 is used to support the fabric 6 that needs to be punched. In practice, the upper surface of the base plate 2 can be preferably constructed as a plane so that the fabric 6 can be laid flat. Correspondingly, the lower surface of the straightening plate 3 is constructed as a plane that fits the upper surface of the base plate 2 so that the fabric 6 can be clamped flatly by the upper surface of the base plate 2 and the lower surface of the straightening plate 3 during the punching process, preventing the fabric 6 from twisting or deforming during the punching process. This is beneficial to improving the punching accuracy and making the punched pattern more aesthetically pleasing.
[0044] like Figures 4-7 As shown, in this embodiment, the base plate 2, the alignment plate 3, and the constraint plate 4 are all constructed as cuboid structures, wherein, as Figure 4 As shown, the base plate 2 is constructed with a mating hole array 21, which includes multiple mating holes 22 arranged in an array, and each stamping hole penetrates the upper and lower ends of the base plate 2.
[0045] like Figure 5 As shown, the collimating plate 3 is constructed with a collimating hole array 31, which includes multiple collimating holes 32 arranged in an array. In practice, each collimating hole 32 passes through the upper and lower ends of the collimating plate 3.
[0046] like Figure 6 As shown, the constraint plate 4 is constructed with a constraint hole array 41, which includes multiple constraint holes 42 arranged in an array. The constraint holes 42 are constructed with internal threads 43 adapted to the punching pin 1. In implementation, each constraint hole 42 passes through the upper and lower ends of the constraint plate 4.
[0047] In implementation, the arrangement of the mating hole array 21, the collimating hole array 31, and the constraint hole array 41 is the same. In the preferred embodiment, the distance D1 between two adjacent mating holes 22 is equal, the distance D2 between two adjacent collimating holes 32 is equal, and the distance D3 between two adjacent constraint holes 42 is equal, with D1 = D2 = D3. During assembly, the constraint plate 4 is detachably disposed above the collimating plate 3, and each constraint hole 42 corresponds one-to-one with each collimating hole 32. Simultaneously, the base plate 2 is disposed below the collimating plate 3, and each collimating hole 32 corresponds one-to-one with each mating hole 22, thereby making the constraint holes 42, collimating holes 32, and mating holes 22 coaxial. Figures 4-7 As shown.
[0048] In implementation, existing technology can be used to detachably mount the constraint plate 4 above the alignment plate 3. For example, the constraint plate 4 can be glued to the upper surface of the alignment plate 3, or it can be detachably connected to the upper surface of the alignment plate 3 using fasteners such as bolts or screws. For instance, the alignment plate 3 has at least two countersunk holes, and correspondingly, the constraint plate 4 has threaded holes adapted to the countersunk holes. Thus, bolts or screws can be detachably mounted to the alignment plate 3 using the adapted countersunk holes and threaded holes. By detachably mounting the constraint plate 4 to the alignment plate 3, in subsequent use, if the constraint plate 4 cracks or is damaged, only the constraint plate 4 needs to be replaced, which is very convenient and low-cost.
[0049] like Figures 4-7 As shown, in this embodiment, the base plate 2 is provided with at least two guide posts 23 arranged in the vertical direction. Correspondingly, the aligning plate 3 is constructed with at least two guide holes 33 that are adapted to the guide posts 23. The aligning plate 3 is sleeved on the guide posts 23 through the guide holes 33. The guide holes 33 and the guide posts 23 form a sliding pair in the vertical direction, ensuring that the aligning plate 3 and the constraint plate 4 can only move vertically relative to the base plate 2 and cannot translate or rotate relative to the base plate 2. This ensures that each aligning hole 32 and each mating hole 22 always correspond one-to-one and are coaxial, which is beneficial to ensuring and improving the accuracy of punching.
[0050] It is understandable that, during implementation, the constraint plate 4 may or may not have the guide hole 33, for example, as shown below. Figures 4-8 As shown, the constraint plate 4 also has at least two guide holes 33. Each guide hole 33 on the constraint plate 4 is coaxial with each guide hole 33 on the collimation plate 3, as shown in the figure, and is respectively fitted onto the corresponding guide post 23, thereby achieving a better guiding effect. Of course, it can be understood that in implementation, setting the guide post 23 at the lower end of the collimation plate 3 and constructing the guide hole 33 on the base plate 2 can also achieve a guiding effect through the cooperation of the guide post 23 and the guide hole 33, which will not be elaborated here.
[0051] In implementation, the outer diameter of the connecting part 11 in the punching needle 1 is configured to match the inner diameter of the constraint hole 42, allowing the connecting part 11 of the punching needle 1 to be threadedly connected to the constraint hole 42. Correspondingly, the outer diameter of the needle shank 12 in the punching needle 1 is configured to be slightly smaller than the inner diameter of the aligning hole 32, allowing the needle shank 12 in the punching needle 1 to form a clearance fit with the aligning hole 32 in the aligning plate 3. This allows the aligning hole 32 in the aligning plate 3 to guide the adjustment and installation process of the punching needle 1, and also allows the aligning hole 32 in the aligning plate 3 to limit, constrain, and support the punching needle 1 along its circumference, preventing breakage of the punching needle 1 during the punching process and improving the reliability and service life of the punching needle 1. In implementation, the inner diameter of the aligning hole 32 in the aligning plate 3 can be the same as the inner diameter of the mating hole 22, which is more conducive to mating with the punching needle 1.
[0052] In one specific embodiment, the length of the connecting portion 11 in the punching needle 1 is adapted to the depth of the constraint hole 42 (e.g., equal), and the length of the needle shank portion 12 in the punching needle 1 is greater than the depth of the alignment hole 32 in the alignment plate 3, such as... Figures 8-10 As shown, when the punch pin 1 is threaded into the constraint hole 42, the lower end of the punch pin 1 extends out of the lower surface of the collimating plate 3 through the collimating hole 32. In actual use, the user only needs to install the punch pin 1 at the corresponding position in the constraint hole array 41 according to the required pattern. The lower ends of the installed punch pins 1 all protrude from the lower surface of the collimating plate 3, forming the required pattern. Therefore, when the punching pattern needs to be changed, only the excess punch pin 1 needs to be removed, and a new punch pin 1 needs to be installed at the corresponding position. This can meet the punching requirements of different patterns, has excellent versatility, and can greatly reduce mold costs.
[0053] In another specific embodiment, the length of the connecting portion 11 in the punching pin 1 is less than the depth of the constraint hole 42, such as... Figure 11 and Figure 12 As shown, the height of the punching pin 1 can be adjusted by rotating it. Simultaneously, the length of the pin shank 12 in the punching pin 1 is greater than the depth of the alignment hole 32 in the alignment plate 3, and less than the sum of the depths of the alignment hole 32 and the constraint hole 42. This allows the lower end of the punching pin 1 to be retracted into the alignment hole 32 during the height adjustment process. Figure 12 As shown, to avoid contact with fabric 6, the lower end of the punching needle 1 can also extend beyond the collimation hole 32, such as... Figure 11As shown, this allows the punch to contact the fabric 6 and achieve the purpose of punching. In actual use, the user only needs to adjust the corresponding punch pin 1 at the corresponding position on the constraint hole array 41 according to the desired pattern. This ensures that the lower ends of the punch pins 1 at the corresponding positions protrude from the lower surface of the collimating plate 3, collectively forming the desired pattern. Therefore, when the punching pattern needs to be changed, only the position of the punch pins 1 needs to be adjusted to form the corresponding pattern, thus meeting the punching requirements of different patterns. This provides excellent versatility and significantly reduces mold costs.
[0054] Of course, a more complete solution also includes a tightening bolt, which is threaded into the constraint hole 42 and tightens the punch pin 1 below to prevent the punch pin 1 from rotating on its own during the punching process. This not only ensures the punching effect, but also makes the entire punching die more stable and reliable.
[0055] Example 3
[0056] This embodiment provides a stamping system, including a press and the punching die described in Embodiment 2. The press can be an existing pressure device. For example, in this embodiment, the press includes a frame, a stamping platform, a stamping power source, and a stamping head. The stamping platform is disposed on the frame, and the stamping head is disposed directly above the stamping platform. The stamping power source is connected to the stamping head for driving the stamping head to move vertically up and down relative to the stamping platform, thereby achieving the purpose of vertical stamping.
[0057] The base plate 2 in the punching die can be fixed to the punching platform of the press. For ease of operation, the base plate 2 is also constructed with mounting holes so that the base plate 2 can be fixed to the punching platform using fasteners that fit the mounting holes.
[0058] The straightening plate 3 or constraint plate 4 in the punching die is fixedly connected to the punching head of the press, so that the straightening plate 3 and constraint plate 4 can be vertically raised and lowered relative to the base plate 2 under the action of the punching head to achieve the purpose of punching. As an example, in implementation, the side of the straightening plate 3 is also constructed with a connection structure adapted to the punching head. The connection structure can be an existing snap-fit structure, slot, or hole, so that the straightening plate 3 and constraint plate 4 can be conveniently fixed to the punching head using the connection structure.
[0059] In use, the fabric 6 is placed between the base plate 2 and the straightening plate 3, and the pattern is arranged on the constraint plate 4 using the punching pin 1. Then the press is started, and the punching head of the press drives the straightening plate 3, the constraint plate 4 and the punching pin 1 to punch down synchronously, so that the required pattern can be punched on the fabric 6.
[0060] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.
Claims
1. A punching pin for a punching die, characterized in that, The structure is rod-shaped, including a connecting part and a needle bar. The outer diameter of the connecting part is larger than that of the needle bar. The outer side of the connecting part has external threads. One end of the connecting part has a torsion part adapted to a torsion tool. The other end of the connecting part is welded to the needle bar. Both the connecting part and the needle bar are metal parts, and the hardness of the needle bar is greater than that of the connecting part.
2. The punching pin for a punching die according to claim 1, characterized in that, The connecting part uses a low-carbon steel shaft, a free-cutting steel shaft, or an aluminum alloy shaft.
3. The punching pin for a punching die according to claim 1, characterized in that, The needle bar is made of high-strength alloy steel, high-hardness stainless steel, high-temperature alloy, or hard alloy.
4. The punching pin for a punching die according to claim 3, characterized in that, The needle bar is made of tungsten steel; the outer diameter of the needle bar is 0.5mm-10mm.
5. The punching pin for a punching die according to claim 1, characterized in that, The connecting part is constructed in a cylindrical shape, the needle bar is constructed in a cylindrical shape, and the connecting part and the needle bar are coaxial. The twisting part is an inner square corner, an inner hexagon, a cross groove, or a plum blossom groove; The outer diameter of the needle bar is 0.9mm, 1.0mm, 1.1mm, or 1.2mm.
6. A punching die, characterized in that, The punching pin according to any one of claims 1-5 further includes a base plate, a aligning plate and a constraint plate, wherein the base plate is constructed with an array of mating holes, the array of mating holes includes a plurality of mating holes arranged in an array, and each punching hole penetrates the upper and lower ends of the base plate. The collimating plate has a collimating hole array, which includes multiple collimating holes arranged in an array. Each collimating hole passes through the upper and lower ends of the collimating plate, and the inner diameter of the collimating hole is larger than the outer diameter of the needle rod in the punch needle. The constraint plate is constructed with an array of constraint holes, which includes multiple constraint holes arranged in an array. The constraint holes are constructed with internal threads adapted to punch pins, and each constraint hole passes through the upper and lower ends of the constraint plate. The constraint plate is detachably mounted above the alignment plate, and the alignment plate is vertically raised and lowered on the base plate. Each constraint hole corresponds to each alignment hole, and each alignment hole corresponds to each mating hole. The connecting part of the punching needle is detachably connected to the constraint hole, and the shank of the punching needle is inserted into the alignment hole.
7. The punching die according to claim 6, characterized in that, The base plate is provided with at least two guide posts arranged in the vertical direction, and the aligning plate is constructed with at least two guide holes that are adapted to the guide posts. The aligning plate is sleeved on the guide posts through the guide holes, and the guide holes and guide posts form a sliding pair in the vertical direction.
8. The punching die according to claim 6, characterized in that, The length of the connecting part in the punching needle is adapted to the depth of the constraint hole, and the length of the needle rod in the punching needle is greater than the depth of the alignment hole in the alignment plate. When the punching needle is threaded into the constraint hole, the lower end of the punching needle extends out of the lower surface of the alignment plate through the alignment hole.
9. The punching die according to claim 6, characterized in that, The length of the connecting part in the punching needle is less than the depth of the constraint hole, and the length of the needle rod in the punching needle is greater than the depth of the aligning hole in the aligning plate, but less than the sum of the depth of the aligning hole and the depth of the constraint hole.
10. A stamping system, comprising a press, characterized in that, It also includes the punching die according to any one of claims 6-9.