CN222890393U - Rotary cutting die for forming and cutting surface with height difference - Google Patents
Rotary cutting die for forming and cutting surface with height difference Download PDFInfo
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- CN222890393U CN222890393U CN202421602853.8U CN202421602853U CN222890393U CN 222890393 U CN222890393 U CN 222890393U CN 202421602853 U CN202421602853 U CN 202421602853U CN 222890393 U CN222890393 U CN 222890393U
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Abstract
本实用新型公开了一种用于成型裁切断面有高度差的旋切模具，包括凸轮，凸轮外侧设置有导轨，导轨内壁从上到下依次设置有第一导向部、第二导向部、第三导向部和第四导向部，第一导向部和第二导向部方向相对，第一导向部与第三导向部方向垂直，第三导向部和第四导向部方向相对。本实用新型通过创新的凸轮与导轨，解决了异形工件裁切断面高度差带来的加工难题，一次装夹即可完成所有边的裁切，相较于传统分步切割的方法，该模具减少了模具数量、工序步骤和机床占用，显著降低了生产成本。同时，由于整个裁切过程在同一套模具内连续完成，避免了分步切割中因定位误差导致的接刀问题，保证了产品端面的平整度和外观质量。
The utility model discloses a rotary cutting die for forming and cutting sections with height differences, comprising a cam, a guide rail is arranged on the outer side of the cam, and the inner wall of the guide rail is sequentially arranged with a first guide part, a second guide part, a third guide part and a fourth guide part from top to bottom, the first guide part and the second guide part are opposite in direction, the first guide part and the third guide part are perpendicular in direction, and the third guide part and the fourth guide part are opposite in direction. The utility model solves the processing difficulties caused by the height difference of the cutting section of special-shaped workpieces through innovative cams and guide rails, and the cutting of all edges can be completed by one clamping. Compared with the traditional step-by-step cutting method, the mold reduces the number of molds, process steps and machine tool occupancy, and significantly reduces the production cost. At the same time, since the entire cutting process is completed continuously in the same set of molds, the problem of knife connection caused by positioning errors in step-by-step cutting is avoided, and the flatness and appearance quality of the product end face are guaranteed.
Description
Technical Field
The utility model relates to the technical field of dies, in particular to a rotary cutting die for forming a height difference of a cutting surface.
Background
In the processing of special-shaped workpieces, particularly for workpieces with height differences on cutting surfaces, the workpieces are not flush on one side or a group of opposite sides, and when a conventional clockwise or anticlockwise unidirectional cutting mode is adopted, the interference problem between a die and the workpieces can be encountered in the process of cutting subsequent sides, so that the smooth processing of a processing flow is seriously hindered, the abrasion of the die is accelerated, the production efficiency is reduced, and the service life of the die is prolonged.
The current strategy is to divide the full-circle cutting of the product into two independent steps, and to use two sets of dies to cut sideways on different machine tools. Specifically, one set of opposite edges is cut on one side, and then another set of pairs is cut on the other side. The step-cut method, while solving the interference problem to some extent, significantly increases the production costs, including the cost of die fabrication, equipment occupation, and operational complexity. In addition, because the product needs to be positioned twice, positioning errors are difficult to avoid completely, so that the end face of the final product can be connected with a cutter, namely a small step, thereby influencing the overall quality of the product, damaging the appearance and the aesthetic degree of the product and being difficult to meet the high-precision processing requirement.
The above disadvantages are to be improved.
Disclosure of Invention
The utility model provides a rotary cutting die for forming a special-shaped workpiece with a height difference on a cutting surface, which aims to solve the problem that the forming efficiency and the forming quality of the special-shaped workpiece with the height difference on the existing cutting surface are low.
The technical scheme of the utility model is as follows:
The utility model provides a rotary-cut mould for shaping cut-off surface has difference in height, includes the cam, the cam outside is provided with the guide rail, guide rail inner wall from the top down has set gradually first guiding part, second guiding part, third guiding part and fourth guiding part, first guiding part with second guiding part direction is relative, first guiding part with the second guiding part flushes the limit towards the work piece edge, first guiding part with third guiding part direction is perpendicular, third guiding part and fourth guiding part direction are relative, third guiding part and/or fourth guiding part have the limit of difference in height towards the work piece edge.
Further, the die comprises an upper die assembly and a lower die assembly, wherein the cam is in sliding connection with the lower die assembly, and the guide rail is fixedly arranged on the lower die assembly;
Or the cam is in sliding connection with the upper die assembly, and the guide rail is fixedly arranged on the upper die assembly.
Further, the upper die assembly comprises an upper die holder, an upper base plate is arranged at the bottom of the upper die holder, an upper clamping plate is arranged at the bottom of the upper base plate, and an upper die knife edge is arranged in the middle of the upper clamping plate;
The lower die assembly comprises a lower die holder, a lower base plate is arranged at the top of the lower die holder, a lower baffle is arranged at the top of the lower base plate, and a lower die knife edge is arranged in the middle of the lower baffle;
The upper die edge or the lower die edge is provided with a core for placing a workpiece, and the cam and the core are correspondingly arranged on the upper die edge or the lower die edge.
Further, be provided with first pushing equipment on the last mould subassembly, first pushing equipment include with upper backing plate sliding connection goes up the ejector pin, go up the ejector pin with be provided with first spring between the upper die base, go up the mould edge of a knife middle part be provided with go up the briquetting of ejector pin connection.
Further, a first stop screw is connected to the upper die holder through threads, and two ends of the first spring are respectively abutted to the first stop screw and the upper ejector rod.
Further, the top of last ejector pin is provided with spacing portion, be provided with first through-hole on the upper backing plate, the diameter of spacing portion is greater than the internal diameter of first through-hole.
Further, a second pushing mechanism is arranged on the lower die assembly and comprises a lower ejector rod which is in sliding connection with the lower die blade, a second spring is arranged between the lower ejector rod and the lower die blade, and a lower ejector block which is in butt joint with the lower ejector rod is arranged at the top of the lower die blade.
Further, a second stop screw is connected to the lower die holder through threads, and two ends of the second spring are respectively abutted to the second stop screw and the lower ejector rod.
Further, the lower ejector block is provided with a contour sleeve, the top of the contour sleeve is in threaded connection with the lower ejector block, the lower die edge is provided with a second through hole, the middle of the contour sleeve penetrates through the second through hole, the bottom of the contour sleeve is provided with a limiting disc, and the diameter of the limiting disc is larger than the inner diameter of the second through hole.
Further, a plurality of limit posts are provided on the upper die assembly or the lower die assembly, and the limit posts are used for limiting the minimum distance between the upper die assembly and the lower die assembly.
According to the technical scheme, the special-shaped workpiece cutting device has the beneficial effects that the processing difficulty caused by the height difference of the cutting surface of the special-shaped workpiece is solved through the innovative cam and the guide rail, the cutting of all sides can be completed through one clamping, and compared with the traditional step-by-step cutting method, the die has the advantages that the number of dies, the procedure steps and the occupied machine tool are reduced, and the production cost is remarkably reduced. Meanwhile, the whole cutting process is continuously finished in the same die set, so that the problem of cutter connection caused by positioning errors in step-by-step cutting is avoided, and the flatness and appearance quality of the end face of the product are ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the structure of a workpiece just after cutting;
FIG. 2 is a schematic view of the front face of a workpiece;
FIG. 3 is a schematic view of the structure of the back side of the workpiece;
FIG. 4 is a schematic perspective view of the present utility model;
FIG. 5 is a schematic view of a longitudinal sectional structure of the mold-opened state of the present utility model;
FIG. 6 is a schematic cross sectional junction structure of the present utility model in an open mold state;
FIG. 7 is a schematic view of a longitudinal sectional junction structure of the present utility model in a closed mode;
FIG. 8 is a schematic cross sectional junction structure of the present utility model in a closed mode;
Fig. 9 is a schematic view showing a half-cut perspective structure of the mold opening state of the present utility model.
The drawing comprises the following reference numerals of 1, a cam, 2, a guide rail, 201, a first guide part, 202, a second guide part, 203, a third guide part, 204, a fourth guide part, 3, an upper die assembly, 301, an upper die holder, 302, an upper base plate, 303, an upper clamping plate, 304, an upper die knife edge, 4, a lower die assembly, 401, a lower die holder, 402, a lower base plate, 403, a baffle plate, 404, a lower die knife edge, 5, a first pushing mechanism, 501, an upper push rod, 502, a first spring, 503, an upper pressing block, 504, a first stop screw, 6, a second pushing mechanism, 601, a lower push rod, 602, a second spring, 603, a lower push block, 604, a second stop screw, 7, an equal-height sleeve, 8, a limit post, 9 and a workpiece.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
It will be understood that when an element is referred to as being "mounted" or "disposed" or "connected" to another element, it can be directly or indirectly on the other element. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are directions or positions based on the drawings, and are merely for convenience of description and are not to be construed as limiting the present technical solution. The terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "multiple" is two or more, unless explicitly defined otherwise. The meaning of "a number" is one or more than one, unless specifically defined otherwise.
As shown in fig. 1 to 9, a rotary cutting die for forming a height difference on a cutting surface according to an embodiment of the present utility model includes an upper die assembly 3, a lower die assembly 4 and a cam 1, wherein a guide rail 2 is disposed at the outer side of the cam 1, the cam 1 is slidably connected with the lower die assembly 4, the guide rail 2 is fixedly mounted on the lower die assembly 4, a first guide portion 201, a second guide portion 202, a third guide portion 203 and a fourth guide portion 204 are sequentially disposed on the inner wall of the guide rail 2 from top to bottom, the first guide portion 201 and the second guide portion 202 are opposite, the first guide portion 201 and the second guide portion 202 face a side of a workpiece 9 which is flush, the first guide portion 201 is perpendicular to the third guide portion 203, the third guide portion 203 and the fourth guide portion 204 are opposite, so that the cam 1 moves in a first direction through the first guide portion 201 and the second guide portion 202, and then moves in a second direction perpendicular to the first direction through the third guide portion 203 and the fourth guide portion 204, and the third guide portion 203 and/or the fourth guide portion 204 face a side of the workpiece 9 which faces a height difference side. The guide part comprises a protrusion and a groove which are oppositely arranged, the protrusion and the groove are respectively arranged on two opposite inner walls of the guide rail 2, and the movement direction of the cam 1 is changed through the protrusion and the groove. Specifically, the first guide portion 201 moves the cam 1 forward in the X-axis direction, the second guide portion 202 moves the cam 1 backward in the X-axis direction, and cuts a pair of opposite sides, i.e., two short sides, of the workpiece 9 which are flush first, the third guide portion 203 moves the cam 1 forward in the Y-axis direction, and the fourth guide portion 204 moves the cam 1 forward in the Y-axis direction, and cuts a pair of opposite sides, i.e., two long sides, of the workpiece 9 which are not flush second.
The upper die assembly 3 comprises an upper die holder 301, an upper base plate 302 is arranged at the bottom of the upper die holder 301, an upper clamping plate 303 is arranged at the bottom of the upper base plate 302, an upper die edge 304 is arranged in the middle of the upper clamping plate 303, the lower die assembly 4 comprises a lower die holder 401, a lower base plate 402 is arranged at the top of the lower die holder 401, a lower baffle 403 is arranged at the top of the lower base plate 402, a lower die edge 404 is arranged in the middle of the lower baffle 403, a core for placing a workpiece 9 is arranged on the lower die edge 404, and the cam 1 is arranged outside the lower die edge 404.
The cam 1 moves forward along the first guide portion 201 toward the X-axis under the guidance of the guide rail 2, and drives the upper die blade 304 in the upper die assembly 3 to cooperate with the lower die blade 404 in the lower die assembly 4 to cut the first side of the workpiece 9 that is flush. After the cutting is completed, the cam 1 returns to the initial position, and then moves in the negative direction of the X-axis under the action of the second guide portion 202, so as to cut the second side of the workpiece 9 which is flush. Subsequently, the cam 1 is moved forward along the Y-axis by the third guide 203, and cuts the third side of the work 9 which is not flush. Since both the first and second sides are flush sides, i.e. the workpiece 9 does not interfere with the movement of the mould. It should be noted that the first and second sides need not be of equal height. Then, the cam 1 cuts the fourth edge of the non-flush workpiece 9 under the action of the fourth guide portion 204, and finally cuts a group of opposite edges of the non-flush workpiece 9. Also, since both the first and second sides are flush sides, the workpiece 9 does not interfere with the movement of the mold.
The rotary cutting die solves the processing problem caused by the height difference of the cutting surface of the special-shaped workpiece 9 through the innovative cam 1 and the guide rail 2, and can cut all sides by one-time clamping. Meanwhile, the whole cutting process is continuously finished in the same die set, so that the problem of cutter connection caused by positioning errors in step-by-step cutting is avoided, and the flatness and appearance quality of the end face of the product are ensured.
In practical application, the cam 1 and the guide rail 2 can be arranged on the upper die assembly 3, the cam 1 is in sliding connection with the upper die assembly 3, and the guide rail 2 is fixedly arranged on the upper die assembly 3. Specifically, cam 1 is disposed on upper die edge 304 and the core is also disposed on upper die edge 304.
As shown in fig. 5 to 9, in a preferred example, the upper die assembly 3 is provided with a first ejector mechanism 5, the first ejector mechanism 5 includes an upper ejector rod 501 slidably connected to the upper base plate 302, a first spring 502 is disposed between the upper ejector rod 501 and the upper die holder 301, and an upper pressing block 503 connected to the upper ejector rod 501 is disposed in the middle of the upper die edge 304.
The upper die holder 301 is screwed with a first stop screw 504, and two ends of the first spring 502 are respectively abutted against the first stop screw 504 and the upper ejector rod 501.
During the cutting process, the upper die assembly 3 gradually approaches the lower die assembly 4 as the cam 1 moves along the guide rail 2. The upper die assembly 3 can be driven to move downwards by a push rod, and the lower die assembly 4 can also be driven to move upwards. At this time, the upper pressing block 503 starts to move upwards due to the reaction force of the upper surface of the workpiece 9, so as to push the upper ejector rod 501 to move upwards, and the first spring 502 is compressed, so that the upper pressing block 503 is tightly attached to the upper surface of the workpiece 9, the workpiece 9 is effectively pressed, and vibration or dislocation of the workpiece 9 in the cutting process is reduced, so that the cutting quality is affected. After cutting, along with the reverse movement of the cam 1, the upper die assembly 3 gradually moves away from the lower die assembly 4, the first spring 502 pushes the upper ejector rod 501 and the upper pressing block 503 to move downwards under the action of restoring force, and at the moment, the upper pressing block 503 pushes the workpiece 9 to be separated from the upper die edge 304.
In this embodiment, by providing the first pushing mechanism 5, the efficiency of the cutting operation is improved. The upper ejector rod 501 and the upper pressing block 503 in the first pushing mechanism 5 work cooperatively, so that the workpiece 9 can be effectively pressed during cutting, the workpiece 9 is prevented from shifting during cutting, the cutting accuracy is ensured, the workpiece 9 can be automatically pushed out by utilizing the elasticity of the first spring 502 after cutting, and the production efficiency is improved. In addition, the setting of the first stop screw 504 not only facilitates the installation and the disassembly of the upper ejector rod 501, but also enables a user to adjust the elasticity of the first spring 502 according to actual demands, thereby optimizing the compacting and pushing effects and further enhancing the adaptability and the flexibility of the device.
As shown in fig. 5 to 9, in a preferred example, the top of the upper push rod 501 is provided with a stopper portion, the upper pad 302 is provided with a first through hole, and the diameter of the stopper portion is larger than the inner diameter of the first through hole. The limiting part prevents the upper ejector rod 501 from penetrating through the first through hole, and ensures the stability of the structure, thereby ensuring the stability of production.
As shown in fig. 5 to 7, in a preferred example, the lower die assembly 4 is provided with a second ejector mechanism 6, the second ejector mechanism 6 includes a lower ejector rod 601 slidably connected to the lower die blade 404, a second spring 602 is disposed between the lower ejector rod 601 and the lower die blade 404, and a lower ejector block 603 abutting against the lower ejector rod 601 is disposed on top of the lower die blade 404.
The lower die holder 401 is connected with a second stop screw 604 in a threaded manner, and two ends of the second spring 602 are respectively abutted against the second stop screw 604 and the lower ejector rod 601.
The lower ejector block 603 is provided with a uniform height sleeve 7, the top of the uniform height sleeve 7 is in threaded connection with the lower ejector block 603, the lower die edge 404 is provided with a second through hole, the middle of the uniform height sleeve 7 penetrates through the second through hole, the diameter of the middle of the uniform height sleeve 7 is smaller than the inner diameter of the second through hole, the bottom of the uniform height sleeve 7 is provided with a limiting disc, and the diameter of the limiting disc is larger than the inner diameter of the second through hole.
At the beginning of the cutting operation, the workpiece 9 is placed on the mandrel. As the upper die assembly 3 descends, the upper die edge 304 and the lower die edge 404 come closer together gradually to shear the workpiece 9. At this time, the core moves downward, the lower ejector rod 601 moves downward with it, and compresses the second spring 602, and the received workpiece 9 is clamped by the core and the upper press block 503. After the cutting is completed, as the upper die assembly 3 is lifted, the second spring 602 pushes the lower push rod 601 to move upwards under the action of the restoring force, the core moves upwards, and the core pushes the workpiece 9 out of the lower die edge 404. At the same time, the contour sleeve 7 limits the upward distance of the lower jack 601.
In this embodiment, by providing the second pushing mechanism 6, the cutting quality of the workpiece 9 is ensured and the workpiece can be automatically discharged. The stability in the cutting process is guaranteed by supporting the workpiece 9 when the lower ejector block 603 is cut, and the workpiece 9 is pushed out after cutting, so that discharging is facilitated. In addition, the second stop screw 604 makes the installation and the disassembly of the lower ejector rod 601 more convenient, and simultaneously, the elasticity of the second spring 602 is also convenient to adjust, so that the pushing-out force can be flexibly adjusted according to the production requirement, and the smooth discharging and the integrity of the workpiece 9 are ensured. In addition, the stability of the lower jacking block 603 of the equal-height sleeve 7 and the limiting disc is improved, offset or inclination is prevented in the cutting and discharging processes, and the reliability of equipment is improved.
As shown in fig. 5 and 7, in a preferred example, a plurality of stopper posts 8 are provided on the upper die assembly 3 or the lower die assembly 4, and the stopper posts 8 serve to limit the minimum distance between the upper die assembly 3 and the lower die assembly 4.
In the cutting process, as the upper die assembly 3 gradually approaches the lower die assembly 4, when the distance between the upper and lower die assemblies 4 is reduced to a preset minimum value, the limit posts 8 contact each other, preventing the upper die assembly 3 from moving further downward.
In this embodiment, the minimum distance between the upper and lower die assemblies 4 is limited by the limiting posts 8, so that the problems of die damage, workpiece 9 deformation, equipment failure and the like caused by excessive compaction are avoided, and the stability and reliability of the production process are improved.
As shown in fig. 5 and 7, in a preferred example, the bottom of the cam 1 is connected with a base plate, the bottom of the base plate is provided with a wear-resistant plate, the base plate slides on the wear-resistant plate, the wear-resistant plate is in sliding connection with the guide rail 2, the bottom of the wear-resistant plate is provided with a push rod, the push rod is in sliding connection with the lower die holder 401, and the push rod drives the movable end of the linear motion mechanism to be connected. The linear motion mechanism can be a pneumatic push rod, a hydraulic push rod or an electric push rod. The lower end wall surface of the guide rail 2 is flat, so that the wear-resistant plate stably slides in the guide rail 2 and stably supports the lower die knife edge 404.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. The utility model provides a rotary-cut mould for shaping cutting surface has difference in height, its characterized in that, includes the cam, the cam outside is provided with the guide rail, guide rail inner wall from the top down has set gradually first guiding part, second guiding part, third guiding part and fourth guiding part, first guiding part with second guiding part direction is relative, first guiding part with the second guiding part is towards the edge that the work piece edge flushes, first guiding part with third guiding part direction is perpendicular, third guiding part and fourth guiding part direction are relative, third guiding part and/or fourth guiding part have the limit of difference in height towards the work piece edge.
2. The rotary cutting die for forming a height difference on a cut surface according to claim 1, comprising an upper die assembly and a lower die assembly, wherein the cam is slidably connected to the lower die assembly, and the guide rail is fixedly installed on the lower die assembly;
Or the cam is in sliding connection with the upper die assembly, and the guide rail is fixedly arranged on the upper die assembly.
3. The rotary cutting die for forming a height difference on a cutting surface according to claim 2, wherein the upper die assembly comprises an upper die holder, an upper base plate is arranged at the bottom of the upper die holder, an upper clamping plate is arranged at the bottom of the upper base plate, and an upper die knife edge is arranged in the middle of the upper clamping plate;
The lower die assembly comprises a lower die holder, a lower base plate is arranged at the top of the lower die holder, a lower baffle is arranged at the top of the lower base plate, and a lower die knife edge is arranged in the middle of the lower baffle;
The upper die edge or the lower die edge is provided with a core for placing a workpiece, and the cam and the core are correspondingly arranged on the upper die edge or the lower die edge.
4. A rotary cutting die for forming a cutting surface with a height difference according to claim 3, wherein the upper die assembly is provided with a first pushing mechanism, the first pushing mechanism comprises an upper ejector rod slidingly connected with the upper backing plate, a first spring is arranged between the upper ejector rod and the upper die holder, and an upper pressing block connected with the upper ejector rod is arranged in the middle of the upper die edge.
5. The rotary cutting die for forming a height difference of a cutting surface according to claim 4, wherein a first stop screw is screwed to the upper die holder, and both ends of the first spring are respectively abutted against the first stop screw and the upper ejector rod.
6. The rotary cutting die for forming a height difference of a cutting surface according to claim 4, wherein the top of the upper ejector rod is provided with a limit portion, the upper backing plate is provided with a first through hole, and the diameter of the limit portion is larger than the inner diameter of the first through hole.
7. A rotary cutting die for forming a height difference of a cutting surface according to claim 3, wherein a second pushing mechanism is provided on the lower die assembly, the second pushing mechanism comprises a lower ejector rod slidingly connected with the lower die blade, a second spring is provided between the lower ejector rod and the lower die blade, and a lower ejector block abutting against the lower ejector rod is provided on the top of the lower die blade.
8. The rotary cutting die for forming a height difference of a cutting surface according to claim 7, wherein a second stop screw is screwed to the lower die holder, and both ends of the second spring are respectively abutted against the second stop screw and the lower ejector rod.
9. The rotary cutting die for forming a height difference on a cutting surface according to claim 7, wherein the lower ejector block is provided with a sleeve with a same height, the top of the sleeve with the lower ejector block is in threaded connection, the lower die edge is provided with a second through hole, the middle part of the sleeve with the same height penetrates through the second through hole, the bottom of the sleeve with the same height is provided with a limiting disc, and the diameter of the limiting disc is larger than the inner diameter of the second through hole.
10. A rotary cutting die for forming a height difference of cut-off surfaces according to any one of claims 2 to 7, wherein a plurality of stopper posts for restricting a minimum distance between the upper die assembly and the lower die assembly are provided on the upper die assembly or the lower die assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421602853.8U CN222890393U (en) | 2024-07-08 | 2024-07-08 | Rotary cutting die for forming and cutting surface with height difference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421602853.8U CN222890393U (en) | 2024-07-08 | 2024-07-08 | Rotary cutting die for forming and cutting surface with height difference |
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| Publication Number | Publication Date |
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| CN222890393U true CN222890393U (en) | 2025-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202421602853.8U Active CN222890393U (en) | 2024-07-08 | 2024-07-08 | Rotary cutting die for forming and cutting surface with height difference |
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| Country | Link |
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| CN (1) | CN222890393U (en) |
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- 2024-07-08 CN CN202421602853.8U patent/CN222890393U/en active Active
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