Workpiece rotary cutting die

Abstract

The utility model belongs to work piece processing technical field discloses a work piece rotary cutting die. Work piece rotary cutting die includes upper die, lower die and cutting waste mechanism, and cutting waste mechanism includes at least two interval arrangement's waste knife structure, every waste knife structure all includes waste knife female die and waste knife male die, annular waste can drop into waste knife female die and waste knife male die between, and waste knife female die and waste knife male die cooperation can cut off annular waste, to form at least two arc waste. Lower die still is equipped with the waste channel of discharging, and the waste channel is located below cutting waste mechanism, and all arc waste can be discharged to work piece rotary cutting die outside through the waste channel. The work piece rotary cutting die can cut off annular waste and form multiple arc waste, and arc waste is more easily discharged to work piece rotary cutting die outside, and this cutting off waste mode not only high safety, and can guarantee the production continuity and stability of die, help to improve the production efficiency of die.

Description

Technical Field

[0001] This utility model relates to the field of workpiece processing technology, and in particular to a workpiece rotary cutting die. Background Technology

[0002] A rotary cutting die is a high-efficiency, precision-specific stamping die. It primarily uses rotary cutting to precisely trim the flash and risers of forgings, castings, or die-cast parts, ultimately forming a high-quality workpiece. After rotary cutting, the material cut from the workpiece is considered scrap and must be removed from the die to prevent it from remaining inside and affecting subsequent rotary cutting operations.

[0003] In existing technologies, waste material is generally removed from the rotary cutting die manually. This method not only fails to ensure the personal safety of operators and affects the continuous operation of robotic arms, disrupting the production rhythm and reducing production efficiency, but also cannot guarantee the stability of die production and the pass rate of product quality. Utility Model Content

[0004] The purpose of this utility model is to provide a workpiece rotary cutting die that can cut off waste materials and quickly remove waste, with high safety and without affecting the continuity and stability of die production.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A workpiece rotary cutting die includes: an upper die; a lower die disposed below the upper die, the upper die and the lower die being in a closed state, a workpiece being placed between the upper die and the lower die, the upper die and the lower die cooperating to achieve rotary cutting of the workpiece edge and form annular waste; a waste cutting mechanism including at least two spaced-apart waste cutting blade structures, each waste cutting blade structure including a waste cutting blade concave die and a waste cutting blade convex die, the annular waste being able to fall between the waste cutting blade concave die and the waste cutting blade convex die, the waste cutting blade concave die and the waste cutting blade convex die cooperating to cut the annular waste to form at least two arc-shaped wastes; wherein, the lower die is also provided with a waste discharge channel, the waste discharge channel being located below the waste cutting mechanism, through which all the arc-shaped wastes can be discharged to the outside of the workpiece rotary cutting die.

[0007] Preferably, the scrap cutter punch is movably disposed on the lower die to be close to or away from the scrap cutter die.

[0008] Preferably, the upper die includes a waste cutting insert, the lower die has a first channel for inserting the waste cutting insert, the waste cutting punch has a first inclined surface located in the first channel, and the end of the waste cutting insert has a second inclined surface. The vertical movement of the waste cutting insert can be converted into the lateral movement of the waste cutting punch through the cooperation of the second inclined surface and the first inclined surface.

[0009] Preferably, the lower die includes a first lower template, on which a guide groove is provided, and the waste cutting punch is movably disposed within the guide groove.

[0010] Preferably, the waste cutting tool structure has two parts, and the two waste cutting tool dies and two waste cutting tool punches of the two waste cutting tool structures are located on the same straight line, so as to cut the annular waste into two semi-circular arc-shaped wastes.

[0011] Preferably, the waste cutting punch includes a first plane and a second plane connected to each other, and the waste cutting die includes a third plane and a fourth plane connected to each other. The first plane and the third plane are arranged opposite to each other and form a cutting groove to accommodate the annular waste. The second plane and the fourth plane are in sliding contact.

[0012] Preferably, the lower die includes a positioning structure and a die structure, the positioning structure being used to position the workpiece, and the die structure being rotatably fitted outside the positioning structure and used to spin-cut the edge of the workpiece; and / or, the upper die includes a pressure member, the pressure member being used to press against the workpiece.

[0013] Preferably, the die structure includes a plurality of die-cutting parts arranged circumferentially along the positioning structure, and the workpiece spun die also includes a die pad. The die-cutting parts are movably disposed on the die pad to be close to or away from the positioning structure.

[0014] Preferably, the upper mold includes a die inserter, and the lower mold is provided with a second channel for the die inserter to be inserted. The vertical movement of the die inserter in the second channel can be converted into the rotational movement and lateral movement of the die-cutting part.

[0015] Preferably, the die inserter and the second channel are provided in multiple sets, and are arranged one-to-one with the multiple die-cutting parts. Each set of die inserters includes at least one die inserter, and each set of second channels includes at least one second channel.

[0016] The beneficial effects of this utility model are:

[0017] This utility model provides a workpiece rotary cutting die comprising an upper die, a lower die, and a waste cutting mechanism. The lower die is located below the upper die, and the upper and lower dies are in a closed state. The workpiece is placed between the upper and lower dies. The upper and lower dies cooperate to rotary cut the edge of the workpiece, forming annular waste. The waste cutting mechanism includes at least two spaced-apart waste cutter structures. Each waste cutter structure includes a waste cutter cavity and a waste cutter punch. The annular waste can fall between the waste cutter cavity and the waste cutter punch. The waste cutter cavity and the waste cutter punch cooperate to cut the annular waste, forming at least two arc-shaped wastes. The lower die is also provided with a waste discharge channel located below the waste cutting mechanism. Through the waste discharge channel, all arc-shaped wastes can be discharged outside the workpiece rotary cutting die. This workpiece rotary cutting die can cut the annular waste and form multiple arc-shaped wastes. The arc-shaped wastes are more easily discharged outside the workpiece rotary cutting die. This cutting and waste discharge method is not only highly safe but also ensures the continuity and stability of die production, helping to improve the production efficiency of the die. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the workpiece rotary cutting die described in an embodiment of this utility model;

[0019] Figure 2 This is a schematic diagram of the upper mold described in an embodiment of the present utility model;

[0020] Figure 3 This is a front view of the upper mold described in this embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of the lower mold and waste cutting mechanism described in an embodiment of the present utility model;

[0022] Figure 5 This is a front view of the lower die and waste cutting mechanism described in this embodiment of the utility model;

[0023] Figure 6 yes Figure 4 A schematic diagram of the structure shown after part of the structure has been removed.

[0024] Figure 7 yes Figure 6 The diagram shows the removal of a die-cut part from the structure shown.

[0025] Figure 8 This is a schematic diagram of the lower mold frame, positioning structure, and waste cutting mechanism described in an embodiment of this utility model;

[0026] Figure 9 This is a schematic diagram of the first lower template described in an embodiment of the present utility model;

[0027] Figure 10 This is a schematic diagram of the waste cutting mechanism described in an embodiment of the present invention.

[0028] In the picture:

[0029] 100. Upper mold; 110. Scrap cutter; 111. Second inclined plane; 120. Pressure plate; 121. First pressing component; 122. Second pressing component; 130. Die cutter; 140. Upper mold base; 141. First upper template; 142. Second upper template; 143. Upper support block;

[0030] 200. Lower mold; 201. Waste discharge channel; 202. First channel; 203. Second channel; 210. Lower mold frame; 211. First lower template; 2111. Guide groove; 2112. Central support; 2113. Outer peripheral support; 2114. Connecting part; 2115. Mounting groove; 2116. Guide rod; 2117. Arc-shaped hollow part; 212. Second lower template; 213. Lower support component; 2131. Central support component; 2132. Lower support block; 220. Positioning structure; 230. Die structure; 231. Die rotary cutting component; 232. Guide post; 240. Die pad; 241. Guide groove; 250. Guide structure; 251. Guide slope;

[0031] 300. Scrap cutting mechanism; 310. Scrap knife structure; 311. Scrap knife punch; 3111. First inclined surface; 3112. Guide hole; 312. Scrap knife die;

[0032] 10. Workpiece. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0037] like Figures 1 to 10 As shown, this utility model provides a workpiece rotary cutting die. This workpiece rotary cutting die can not only rotary cut the burrs on the workpiece 10, but also cut off the waste material after rotary cutting and discharge the cut waste material out of the die. Specifically, the workpiece rotary cutting die includes an upper die 100, a lower die 200, and a waste cutting mechanism 300. The lower die 200 is located below the upper die 100. The upper die 100 and the lower die 200 have a separated state and a closed state. The workpiece 10 is placed between the upper die 100 and the lower die 200. The upper die 100 and the lower die 200 cooperate to achieve rotary cutting of the edge of the workpiece 10 and form a ring-shaped waste material. The scrap cutting mechanism 300 includes at least two spaced scrap cutter structures 310. Each scrap cutter structure 310 includes a scrap cutter die 312 and a scrap cutter punch 311. Annular scrap can fall between the scrap cutter die 312 and the scrap cutter punch 311. The scrap cutter die 312 and the scrap cutter punch 311 cooperate to cut the annular scrap, forming at least two arc-shaped scrap pieces. The lower die 200 is also provided with a scrap discharge channel 201, located below the scrap cutting mechanism 300. Through the scrap discharge channel 201, all arc-shaped scrap can be discharged to the outside of the workpiece rotary cutting die.

[0038] Compared to the manual waste removal method used in the prior art, the workpiece rotary cutting die provided by this utility model can achieve automatic waste removal. In order to achieve automatic waste removal, the waste cutting mechanism 300 is first used to cut the annular waste into multiple arc-shaped wastes. A large annular waste is divided into multiple smaller arc-shaped wastes. The smaller arc-shaped wastes are easier to fall and are also easier to be discharged out of the workpiece rotary cutting die through the waste removal channel 201. This cutting and waste removal method is not only highly safe, but also does not affect the production cycle and continuous operation of the die. It can ensure the production continuity and stability of the die and also help improve the production efficiency of the die.

[0039] like Figure 1and Figure 2 As shown, the upper mold 100 includes an upper mold frame 140, which includes a first upper template 141, a second upper template 142, and an upper support block 143. The first upper template 141 and the second upper template 142 are spaced apart in the vertical direction, and the upper support block 143 is installed between the first upper template 141 and the second upper template 142. Optionally, multiple upper support blocks 143 are provided, and multiple upper support blocks 143 are simultaneously supported between the first upper template 141 and the second upper template 142.

[0040] In one specific embodiment, both the first upper template 141 and the second upper template 142 are rectangular plates, and four upper support blocks 143 are provided, which are respectively arranged on the front, rear, left, and right sides of the space between the first upper template 141 and the second upper template 142. Optionally, the upper support blocks 143 are cubic blocks.

[0041] The upper mold 100 also includes a pressure member 120, which is disposed on the second upper mold plate 142 and is used to press against the top of the workpiece 10. Optionally, the pressure member 120 includes a first pressing member 121 and a second pressing member 122, both of which are cylindrical. The first pressing member 121 is cylindrical and connected to the second upper mold plate 142. The diameter of the second pressing member 122 is smaller than the diameter of the first pressing member 121. The end of the first pressing member 121 away from the second upper mold plate 142 is a concave arc surface, and the second pressing member 122 is fixed at the center of the concave arc surface. The end of the second pressing member 122 away from the first pressing member 121 is used to press against the top of the workpiece 10. Optionally, the workpiece 10 is hemispherical.

[0042] like Figures 3 to 8 As shown, the lower mold 200 includes a lower mold frame 210, which includes a first lower template 211, a second lower template 212, and a lower support member 213. The second lower template 212 and the first lower template 211 are spaced apart in the vertical direction. The second lower template 212 is located below the first lower template 211. The lower support member 213 is supported between the second lower template 212 and the first lower template 211 and helps to form a waste discharge channel 201.

[0043] In some embodiments, such as Figure 9As shown, the first lower template 211 is provided with a central support portion 2112, an outer peripheral support portion 2113 arranged circumferentially around the central support portion 2112, and at least two connecting portions 2114 connecting the central support portion 2112 and the outer peripheral support portion 2113. An arc-shaped hollow portion 2117 is formed between the two connecting portions 2114, the outer wall surface of the central support portion 2112 located between the two connecting portions 2114, and the outer peripheral support portion 2113 located between the two connecting portions 2114. At least two arc-shaped hollow portions 2117 are provided. This arrangement prevents annular waste from passing through the first lower template 211, while the arc-shaped waste formed after being cut can pass through the arc-shaped hollow portion 2117 and pass through the first lower template 211. It should be noted that the waste cutting mechanism 300 is located directly above the connecting portions 2114. Optionally, the number of connecting portions 2114 is the same as the number of waste cutting mechanisms 300, and they are arranged in a one-to-one correspondence.

[0044] The lower support member 213 includes a central support member 2131 and two lower support blocks 2132. The central support member 2131 is supported below the central support portion 2112. The two lower support blocks 2132 are located on both sides of the central support portion 2112 and support the left and right sides of the outer peripheral support portion 2113, respectively. A gap is formed between the central support member 2131 and the lower support blocks 2132, and a guide structure 250 is provided in the gap. The guide structure 250 has a downwardly inclined guide slope 251. The arc-shaped hollow portion 2117 communicates with the gap between the central support member 2131 and the lower support blocks 2132 to form a waste discharge channel 201. The arc-shaped waste material can fall from the arc-shaped hollow portion 2117 into the space between the central support member 2131 and the lower support blocks 2132, and slide out of the lower mold 200 along the guide slope 251 of the guide structure 250.

[0045] The scrap cutter punch 311 includes a first plane and a second plane connected to each other, and the scrap cutter die 312 includes a third plane and a fourth plane connected to each other. The first plane and the third plane are arranged opposite to each other and form a cutting groove for receiving annular scrap. The second plane and the fourth plane are in sliding contact.

[0046] In some embodiments, the scrap cutter punch 311 is movably disposed on the lower die 200 to move closer to or further away from the scrap cutter die 312. By moving the scrap cutter punch 311 closer to the scrap cutter die 312, the annular scrap located between the scrap cutter punch 311 and the scrap cutter die 312 can be cut off. By moving the scrap cutter punch 311 further away from the scrap cutter die 312, the annular scrap can fall into the gap between the scrap cutter punch 311 and the scrap cutter die 312. It should be noted that an elastic reset member can be provided at the scrap cutter punch 311 to provide power for the separation of the scrap cutter punch 311 and the scrap cutter die 312. Optionally, the elastic reset member can be a spring.

[0047] In one specific embodiment, continue to refer to Figure 9 and Figure 10 As shown, the first lower template 211 is provided with a guide groove 2111, and the scrap cutter punch 311 is movably disposed within the guide groove 2111. The guide groove 2111 improves the movement accuracy of the scrap cutter punch 311, thereby achieving precise cutting of the annular scrap. Furthermore, a guide rod 2116 protrudes within the guide groove 2111, and a guide hole 3112 is provided on the scrap cutter punch 311, through which the guide rod 2116 passes. A mounting groove 2115 is provided at the edge of the central support portion 2112, and the scrap cutter die 312 is mounted within the mounting groove 2115.

[0048] In order to drive the scrap cutter punch 311 to move toward the scrap cutter die 312, the upper die 100 includes a scrap cutting insert 110. Specifically, the scrap cutting insert 110 protrudes from the second upper template 142, and the lower die 200 is provided with a first channel 202 for the scrap cutting insert 110 to be inserted. The scrap cutter punch 311 is provided with a first inclined surface 3111, which is located in the first channel 202. The end of the scrap cutting insert 110 is provided with a second inclined surface 111. During the mold closing process of the upper die 100 and the lower die 200, the vertical movement of the scrap cutting insert 110 can be converted into the lateral movement of the scrap cutter punch 311 through the cooperation of the second inclined surface 111 and the first inclined surface 3111.

[0049] In one specific embodiment, two scrap cutter structures 310 are provided. The two scrap cutter dies 312 and two scrap cutter punches 311 of the two scrap cutter structures 310 are all located on the same straight line to cut the annular scrap into two semi-circular arc-shaped scraps. Correspondingly, two scrap cutting inserts 110 are also provided. The two scrap cutting inserts 110 are both provided on the second upper template 142 and located on the left and right sides of the second upper template 142. Two first channels 202 are provided on the lower mold 200, and the two scrap cutting inserts 110 are inserted into the two first channels 202 one-to-one. Of course, in other embodiments, three, four or more scrap cutter structures 310 can be provided as needed to cut the annular scrap into three, four or more arc-shaped scraps.

[0050] Continue to refer to Figure 5 As shown, the lower mold 200 also includes a positioning structure 220, which is used to position the workpiece 10. In some embodiments, the positioning structure 220 is hemispherical, and the hemispherical workpiece 10 is fastened onto the positioning structure 220. The hemispherical surface of the positioning structure 220 is adapted to the shape of the workpiece 10, which helps to improve the stability of the support and the positioning effect.

[0051] Continue to refer to Figure 6As shown, the lower die 200 also includes a die cavity structure 230, which is rotatably fitted outside the positioning structure 220 and used for rotary cutting the edge of the workpiece 10 to form an annular waste. In some embodiments, the die cavity structure 230 includes a plurality of die rotary cutting elements 231 arranged circumferentially along the positioning structure 220, and the workpiece rotary cutting die also includes a die cavity pad 240, on which the die rotary cutting elements 231 are movably disposed to move closer to or further away from the positioning structure 220. Optionally, referring to... Figure 7 As shown, a guide groove 241 is provided on the die pad 240, and a guide post 232 protrudes from the lower part of the die-cutting part 231. The guide post 232 passes through the guide groove 241 and can move along the guide groove 241. A rotating pad is also provided below the die pad 240. The rotating pad has an arc-shaped groove. After the guide post 232 passes through the guide groove 241, it is placed in the arc-shaped groove. As the die pad 240 rotates, the guide post 232 can move along the arc-shaped groove.

[0052] In order to drive the die-cutting part 231, in some embodiments, the upper die 100 includes a die inserter 130, and the lower die 200 is provided with a second channel 203 for the die inserter 130 to be inserted. The vertical movement of the die inserter 130 in the second channel 203 can be converted into the rotational movement and lateral movement of the die-cutting part 231.

[0053] In some embodiments, multiple sets of die inserts 130 and second channels 203 are provided, and each set corresponds to a plurality of die-cutting parts 231. Each set of die inserts 130 includes at least one die insert 130, and each set of second channels 203 includes at least one second channel 203. The inner surface of the die inserts 130 is a concave-convex surface. The concave-convex surface shapes of different sets of die inserts 130 are different. By cooperating with the outer end face of the corresponding die-cutting part 231, the die-cutting part 231 can perform rotary cutting on the workpiece 10. The specific principle of rotary cutting is prior art and will not be described in detail here. In a specific embodiment, four sets of die inserts 130 and second channels 203 are provided. Each set of die inserts 130 includes two die inserts 130, and each set of second channels 203 includes two second channels 203.

[0054] The working principle of the workpiece rotary cutting die is as follows: First, the workpiece 10 is placed on the positioning structure 220 of the lower die 200; then, the upper die 100 is moved in a direction close to the lower die 200. When the upper die 100 moves downward, the pressure member 120 first presses against the top of the workpiece 10, and the die insert 130 is inserted into the second channel 203. During the insertion process, the die structure 230 is driven to move clockwise inward, thereby realizing the rotary cutting of the workpiece 10. The resulting annular waste separates from the main body of the workpiece 10 and falls above the waste cutting mechanism 300. At the same time, the waste cutting insert 110 is inserted into the first channel 202 and... During insertion, the scrap cutter punch 311 is driven to move toward the scrap cutter die 312 to cut off the workpiece 10 that has been cut off and fallen into the gap between the scrap cutter punch 311 and the scrap cutter die 312, splitting the annular scrap into two arc-shaped scraps. The two arc-shaped scraps are discharged from the lower die 200 through the waste discharge channel 201. Then, the upper die 100 and the lower die 200 are separated. During the separation process, the annular scrap that has fallen above the scrap cutting mechanism 300 enters the space between the scrap cutter punch 311 and the scrap cutter die 312 to be cut synchronously when the edge of the next workpiece 10 is cut.

[0055] The workpiece rotary cutting die provided by this utility model can achieve continuous discharge of die waste in a single process, reduce manual operation, improve the stability of die use, and thus help improve production quality and efficiency. This workpiece rotary cutting die has the following advantages: 1. The waste cutting mechanism 300 is easy to disassemble and replace at any time; 2. The waste cutting mechanism 300 has a universal structure and can be applied to dies of various rotary cutting sizes; 3. The waste cutting punch 311 and waste cutting die 312 of the waste cutting mechanism 300 can be repeatedly sharpened and reused multiple times.

[0056] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A workpiece rotary cutting die, characterized in that, include: Upper mold(100); The lower mold (200) is located below the upper mold (100). The upper mold (100) and the lower mold (200) are in a closed state. The workpiece (10) is placed between the upper mold (100) and the lower mold (200). The upper mold (100) and the lower mold (200) cooperate to achieve rotary cutting of the edge of the workpiece (10) and form an annular waste. The waste cutting mechanism (300) includes at least two spaced-apart waste cutter structures (310), each of the waste cutter structures (310) including a waste cutter die (312) and a waste cutter punch (311), the annular waste material can fall between the waste cutter die (312) and the waste cutter punch (311), the waste cutter die (312) and the waste cutter punch (311) cooperate to cut the annular waste material to form at least two arc-shaped waste materials; The lower die (200) is also provided with a waste discharge channel (201), which is located below the waste cutting mechanism (300). Through the waste discharge channel (201), all the arc-shaped waste can be discharged to the outside of the workpiece rotary cutting die.

2. The workpiece rotary cutting die according to claim 1, characterized in that, The scrap cutter punch (311) is movably disposed on the lower die (200) to be close to or away from the scrap cutter die (312).

3. The workpiece rotary cutting die according to claim 2, characterized in that, The upper mold (100) includes a waste cutting insert (110), and the lower mold (200) is provided with a first channel (202) for the waste cutting insert (110) to be inserted. The waste cutting punch (311) is provided with a first inclined surface (3111), which is located in the first channel (202). The end of the waste cutting insert (110) is provided with a second inclined surface (111). The vertical movement of the waste cutting insert (110) can be converted into the lateral movement of the waste cutting punch (311) through the cooperation of the second inclined surface (111) and the first inclined surface (3111).

4. The workpiece rotary cutting die according to claim 1, characterized in that, The lower mold (200) includes a first lower template (211), on which a guide groove (2111) is provided, and the waste cutter punch (311) is movably disposed in the guide groove (2111).

5. The workpiece rotary cutting die according to claim 1, characterized in that, The waste cutting tool structure (310) is provided in two parts. The two waste cutting tool dies (312) and the two waste cutting tool punches (311) of the two waste cutting tool structures (310) are located on the same straight line so as to cut the annular waste into two semi-circular arc-shaped wastes.

6. The workpiece rotary cutting die according to claim 1, characterized in that, The waste cutting punch (311) includes a first plane and a second plane connected to each other, and the waste cutting die (312) includes a third plane and a fourth plane connected to each other. The first plane and the third plane are arranged opposite to each other and form a cutting groove to accommodate the annular waste. The second plane and the fourth plane are in sliding contact.

7. The workpiece rotary cutting die according to claim 1, characterized in that, The lower die (200) includes a positioning structure (220) and a die structure (230). The positioning structure (220) is used to position the workpiece (10). The die structure (230) is rotatably sleeved outside the positioning structure (220) and is used to spin cut the edge of the workpiece (10). And / or, the upper mold (100) includes a pressure member (120) for pressing against the workpiece (10).

8. The workpiece rotary cutting die according to claim 7, characterized in that, The die structure (230) includes a plurality of die-cutting parts (231) arranged circumferentially along the positioning structure (220). The workpiece spun die also includes a die pad (240). The die-cutting parts (231) are movably disposed on the die pad (240) to be close to or away from the positioning structure (220).

9. The workpiece rotary cutting die according to claim 8, characterized in that, The upper mold (100) includes a die inserter (130), and the lower mold (200) is provided with a second channel (203) for the die inserter (130) to be inserted. The vertical movement of the die inserter (130) in the second channel (203) can be converted into the rotational movement and lateral movement of the die rotary cutter (231).

10. The workpiece rotary cutting die according to claim 9, characterized in that, The die inserter (130) and the second channel (203) are provided in multiple sets, and are provided in one-to-one correspondence with the multiple die rotary cutting parts (231). Each set of die inserters (130) includes at least one die inserter (130), and each set of second channels (203) includes at least one second channel (203).

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