A type of upper rotary cutting die

Abstract

This invention relates to the field of mold assembly technology and discloses an upper rotary cutting mold, including an upper mold assembly with an upper die cutter and a lower mold assembly with a lower die cutter that cooperates with the upper die cutter. Through the upper mold assembly, the lower mold assembly, and a rotary cutting transmission assembly linked with the upper die cutter, when the upper mold assembly is pressed down and the upper die cutter and the lower die cutter are engaged, a stable cutting edge engagement relationship can be established at the end of the workpiece. A guide member is connected to the upper mold assembly and forms a sliding engagement with a slider. A guide portion distributed along a first direction is provided on one side of the guide member, and a guide protrusion that cooperates with the guide portion is provided on the slider. During the relative displacement process, the two drive the slider to move horizontally in steps along a second direction and a third direction, so that the upper die cutter can complete the rotary cutting edge segment by segment according to a predetermined trajectory, thereby improving the connection stability of the cutting edge action at different circumferential positions and ensuring the consistency of the end size, contour, and flatness of the workpiece.

Description

Technical Field

[0001] This invention relates to the field of mold assembly technology, and more specifically, to an upper rotary cutting mold. Background Technology

[0002] In the field of metal stamping and deep drawing, the end trimming of cylindrical parts, thin-walled rotating parts, and similar open-ended parts typically requires trimming the open ends after forming to ensure that the end dimensions, contours, and flatness meet subsequent assembly or appearance requirements. Especially for workpieces that have undergone deep drawing, the ends often exhibit uneven material flow and inconsistent edge heights. Therefore, end trimming not only involves removing excess material but also ensuring the consistency of the part's circumferential direction. Based on this, using a die structure to trim the ends during the stamping process has become a common method in the processing of such parts. Among these methods, the rotary cutting method, which uses an internal die transmission mechanism to drive the trimming tool relative to the workpiece for circumferential trimming, is increasingly being applied to end finishing scenarios.

[0003] In existing rotary cutting edge trimming dies, the upper die presses down to drive the movement of local transmission components, causing the tool to generate lateral cutting displacement near the workpiece end. This is different from axial pressure cutting. However, when faced with uneven ends of drawn parts, thin walls, and large variations in circumferential allowance, the cutting entry state and displacement connection of the tool at different positions on the workpiece circumference are unstable. This results in large differences in local force during the circumferential edge trimming process, which in turn affects the consistency and flatness of the contour after edge trimming.

[0004] Therefore, there is a need to provide an upper rotary cutting die to solve the problem of poor end edge consistency during the cutting process of existing rotary cutting edge cutting dies. Summary of the Invention

[0005] The main objective of this invention is to provide an upper rotary cutting die, which aims to solve the technical problems mentioned in the background section.

[0006] The present invention adopts the following technical solution: An upper rotary cutting die, comprising: Upper mold assembly, wherein the upper mold assembly is provided with an upper mold cutter; The lower die assembly is provided with a lower die cutter that cooperates with the upper die cutter. The lower die cutter has a placement hole for placing the workpiece to be processed. The workpiece to be processed has a ring-shaped portion to be cut that extends out of the placement hole. A rotary cutting transmission assembly includes a guide member and a slider that are slidably connected. The slider is connected to an upper die cutter, and the guide member is connected to an upper die assembly. One side of the guide member is provided with a guide portion distributed along a first direction, and the slider is provided with a guide protrusion that cooperates with the guide portion. When the upper mold assembly is pressed down to make the upper mold tool cooperate with the lower mold tool, the guide member moves relative to the slider along the first direction, and the guide part abuts against the guide protrusion to drive the slider to move horizontally in steps around the placement hole along the second direction and the third direction, so as to perform rotary cutting of the annular part to be cut on the workpiece.

[0007] Furthermore, four guide members are provided, which are disposed on the outer periphery of the slider. The guide members are provided with a guide portion on the side facing the slider. The four guide protrusions are respectively provided corresponding to the four guide portions. The two adjacent guide portions and the two opposite guide portions are staggered along the first direction, and the guide portions form an inclined guide surface.

[0008] Furthermore, the upper mold assembly also includes an upper mold base, an upper fixed base, and a push rod. The upper fixed base is disposed at the bottom end of the upper mold base, and the push rod penetrates the upper mold base and is slidably connected to the upper mold base. The bottom end and the upper end face of the upper fixed seat penetrate through the first direction to form a transmission cavity. The guide member is fixedly connected to the cavity wall of the transmission cavity, and the slider is slidably disposed in the transmission cavity.

[0009] Furthermore, the upper mold assembly also includes a clamping cylinder, a pushing and fixing ring, and a stripper plate. The clamping cylinder and the pushing and fixing ring are both fixedly connected to the bottom end of the slider. The pushing and fixing ring is sleeved on the outer periphery of the clamping cylinder. The upper mold cutter passes through the clamping cylinder. The stripper plate is located at the bottom end of the upper fixed seat, and the stripper plate has a through hole for the clamping cylinder to pass through. The push-fixing ring is fixedly connected to a push rod, which penetrates the stripper plate. When the upper die cutter and the lower die cutter cooperate, the push rod abuts against the lower die assembly. The upper die assembly presses down, causing the guide to move relative to the slider along the first direction.

[0010] Furthermore, the lower mold assembly also includes a lower template, a lower mold base, a clamping plate, and a fixing block. The lower template is disposed above the lower mold base, and the lower template has a tool groove, in which the lower mold tool is embedded. The clamping plates are distributed below the lower template and are connected to the lower mold base. Two symmetrically arranged fixing blocks are fixedly connected to the clamping plates. The fixing blocks and the clamping plates form a fixing groove for clamping the workpiece to be processed. The workpiece to be processed, which is fixed in the fixing groove, passes through the lower template and the lower mold cutter and extends above the lower mold cutter.

[0011] Furthermore, the lower mold assembly also includes a first pad, a lower fixed seat, a lower floating plate, and a positioning core. The first pad is disposed at the bottom end of the clamping plate. The lower fixed seat is disposed between the lower template and the lower mold base. The lower floating plate is connected between the lower fixed seat and the lower mold base. The lower fixed seat is provided with a receiving hole for accommodating the first pad and the clamping plate. The positioning core is fixedly connected to the lower floating plate and passes through the first pad and the clamping plate, and is used to position the workpiece to be processed.

[0012] Furthermore, a second pad is provided between the lower floating plate and the lower mold base. A first ejector pin and a second ejector pin are provided through the lower floating plate, the second pad, and the lower mold base. The first ejector pin and the second ejector pin are provided corresponding to the receiving hole. The second ejector pin passes through the first pad and the clamping plate. The top end of the first ejector pin abuts against the bottom end of the first pad, and the top end of the second pad abuts against the bottom end of the lower mold plate.

[0013] Furthermore, it also includes a guide post and a return spring. The upper end face of the guide post abuts against the bottom end of the upper mold base, and the guide post passes through the upper fixed base and the stripper plate. The lower mold plate and the lower mold base are both provided with guide holes for the guide post to pass through. The return spring is disposed between the stripper plate and the lower mold plate. A limiting post is provided through the upper mold base, the upper fixed base and the stripper plate. The bottom end of the limiting post abuts against the upper end face of the lower mold plate to limit the downward stroke of the upper mold assembly.

[0014] Furthermore, the lower mold assembly also includes a scrap plate, a stripper block, and a scrap ring. The scrap plate is disposed on the upper end face of the lower mold plate. The stripper block and the scrap ring are both sleeved on the outside of the upper mold cutter. The scrap ring holds the stripper block and is fixedly connected to the scrap plate. The waste plate has a waste channel that passes over the workpiece to be processed. Air pipe interfaces and waste guide blocks are connected to opposite sides of the waste channel to blow and guide the waste out.

[0015] Furthermore, the guide protrusion is a trapezoidal block protruding outward from the outer wall of the slider, the trapezoidal block extends perpendicularly to the first direction, and the guide portion is a trapezoidal groove opened on the side of the guide member facing the slider, the groove wall of the trapezoidal groove forming the inclined guide surface.

[0016] Beneficial effects: In this invention, through the upper die assembly, the lower die assembly, and the rotary cutting transmission assembly linked to the upper die cutter, a stable cutting edge fit relationship can be established at the end of the workpiece when the upper die assembly is pressed down and the upper and lower die cutters engage. The guide member is connected to the upper die assembly and forms a sliding fit with the slider, providing controlled motion constraints to the slider during the die operation. During the overall pressing down of the die, a guided composite displacement is formed, thereby making the cutting edge action of the open end of the workpiece more balanced along the circumferential direction. This ensures the consistency of the end size, contour, and flatness. In addition, a guide portion distributed along the first direction is provided on one side of the guide member, and a guide protrusion that engages with the guide portion is provided on the slider. During the relative displacement process, the two drive the slider to move horizontally in steps along the second and third directions, so that the upper die cutter can complete the rotary cutting edge segment by segment according to a predetermined trajectory. This helps to keep the cutting edge entry, transition, and cutting exit processes of the cutter at different positions on the circumference of the workpiece continuous, improves the connection stability of the cutting edge action at different circumferential positions, and ensures the consistency of the end size, contour, and flatness of the workpiece. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an upper rotary cutting die according to the present invention; Figure 2 This is a cross-sectional structural diagram of an upper rotary cutting die according to the present invention; Figure 3 This is a partial structural schematic diagram of the rotary cutting transmission assembly of the present invention; Figure 4 This is a schematic diagram of a cross-sectional structure of an upper rotary cutting die according to the present invention from another direction; Figure 5 This is a schematic diagram of the upper die assembly of an upper rotary cutting die undergoing a half-stroke downward pressure according to the present invention; Figure 6 This is a schematic diagram of the upper die assembly of an upper rotary cutting die being fully pressed down according to the present invention; Figure 7 This is a schematic cross-sectional view of the upper die assembly of the upper rotary cutting die being fully pressed down according to the present invention; Figure 8 This is a partial structural schematic diagram of the lower mold assembly of the present invention; in: 100. Workpiece to be processed; 1. Upper mold assembly; 11. Upper mold cutter; 12. Upper mold base; 13. Upper fixed base; 130. Transmission cavity; 14. Push rod; 15. Clamping sleeve; 16. Push fixing ring; 17. Stripper plate; 18. Ejector rod; 2. Lower mold assembly; 21. Lower mold cutter; 22. Lower template; 23. Lower mold base; 24. Clamping plate; 25. Fixing block; 26. First pad; 27. Lower fixed base; 270. Receiving hole; 2 8. Lower float plate; 29. ​​Positioning core; 210. Second pad plate; 211. First ejector pin; 212. Second ejector pin; 213. Scrap plate; 214. Stripping block; 215. Scrap ring; 216. Scrap channel; 217. Air pipe interface; 218. Scrap guide block; 3. Rotary cutting transmission assembly; 31. Guide component; 310. Guide part; 32. Slider; 320. Guide protrusion; 4. Guide post; 5. Return spring; 6. Limiting post.

[0018] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0020] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to 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 invention according to the specific circumstances.

[0022] In this invention, unless otherwise explicitly 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.

[0023] Reference Figures 1 to 8 This invention proposes an upper rotary cutting die, comprising: Upper mold assembly 1, wherein the upper mold assembly 1 is provided with an upper mold cutter 11; The lower mold assembly 2 is provided with a lower mold cutter 21 that cooperates with the upper mold cutter 11. The lower mold cutter 21 has a placement hole for placing the workpiece 100 to be processed. The workpiece 100 to be processed has a ring-shaped portion to be cut that extends out of the placement hole. The rotary cutting transmission assembly 3 includes a guide 31 and a slider 32 that are slidably connected. The slider 32 is connected to the upper die cutter 11, and the guide 31 is connected to the upper die assembly 1. One side of the guide 31 is provided with a guide portion 310 distributed along a first direction, and the slider 32 is provided with a guide protrusion 320 that cooperates with the guide portion 310. When the upper mold assembly 1 is pressed down to make the upper mold cutter 11 cooperate with the lower mold cutter 21, the guide member 31 moves relative to the slider 32 along the first direction, and the guide part 310 abuts against the guide protrusion 320 to drive the slider 32 to move horizontally in steps around the placement hole along the second and third directions, so as to perform rotary cutting on the annular part to be cut of the workpiece 100.

[0024] In the above embodiment, the assembly includes an upper die assembly 1, a lower die assembly 2, and a rotary cutting transmission assembly 3. The upper die assembly 1 is provided with an upper die cutter 11, and the lower die assembly 2 is provided with a lower die cutter 21 that cooperates with the upper die cutter 11. When the die is working, the two are arranged correspondingly on the upper and lower sides of the part to be cut on the workpiece 100 to form a cutting edge cooperation area. The lower die cutter 21 is further provided with a placement hole for placing the workpiece 100, so that the annular part to be cut on the workpiece 100 protrudes from the upper end face of the lower die cutter 21. The rotary cutting transmission assembly 3 includes a guide member 31 and a slider 32. The slider 32 is connected to the upper die cutter 11, and the guide member 31 is connected to the upper die assembly 1. The slider 32 and the guide member 31 form a sliding fit relationship, so that the upper die cutter 11 does not move in a single direction with the upper die assembly 1, but has a further controlled displacement basis under the constraint of the guide member 31. A guide portion 310 distributed along a first direction is provided on one side of the guide member 31, and a guide protrusion 320 that cooperates with the guide portion 310 is provided on the slider 32. The guide portion 310 and the guide protrusion 320 form a transmission mating pair. The above structure enables the rotary cutting transmission assembly 3 to establish a displacement constraint relationship transmitted from the guide member 31 to the slider 32 during the overall operation of the mold, and further transmits this constraint relationship to the upper die cutter 11, so that the upper die cutter 11 has a structural basis for rotary cutting the annular portion to be cut along the outer periphery of the end of the workpiece 100 when it cooperates with the lower die cutter 21.

[0025] When the upper die assembly 1 is pressed down and the upper die cutter 11 and the lower die cutter 21 are engaged, the guide member 31 and the slider 32 are displaced in a perpendicular direction along the first direction. The guide part 310 and the guide protrusion 320 continue to engage during this relative displacement, driving the slider 32 to move horizontally in steps along the second and third directions, thereby driving the upper die cutter 11 to perform segmented rotary cutting relative to the lower die cutter 21. Since the slider 32 and the upper die cutter 11 are connected, and the guide member 31 and the upper die assembly 1 are connected, and the engagement position and distribution direction of the guide part 310 and the guide protrusion 320 predetermine the displacement mode of the slider 32, the entry, transition and cutting exit of the upper die cutter 11 at different positions on the circumference of the workpiece 100 can maintain a relatively continuous connection state, making the cutting process of the open end of the workpiece 100 along the circumferential direction more balanced. With the above-mentioned structural combination, when the mold trims the ends of deep-drawn parts or similar open parts, it can maintain good stability of the end trimming action at different circumferential positions, which helps to ensure the consistency of the end dimensions, contours and flatness of the workpiece 100.

[0026] In one embodiment, four guide members 31 are provided, and the four guide members 31 are disposed on the outer periphery of the slider 32. The guide member 31 is provided with a guide portion 310 on the side facing the slider 32. The four guide protrusions 320 are respectively provided corresponding to the four guide portions 310. The two adjacent guide portions 310 and the two opposite guide portions 310 are staggered along the first direction, and the guide portion 310 forms an inclined guide surface.

[0027] In the above embodiment, four guide members 31 are provided, which are disposed on the outer periphery of the slider 32, respectively located at different positions outward from the slider 32, thereby forming an enclosing guiding constraint on the slider 32. Each guide member 31 has a guide portion 310 on the side facing the slider 32, and four guide protrusions 320 are correspondingly provided on the outer periphery of the slider 32, with the four guide protrusions 320 corresponding to the four guide portions 310. The guide portions 310 are not arranged at the same height position, but are staggered along the first direction, wherein two adjacent guide portions 310 are staggered along the first direction, and two opposite guide portions 310 are also staggered along the first direction. Thus, the slider 32 is not subjected to concentrated constraint in the same direction all at once among the guide members 31, but is gradually guided by different guide portions 310 during the relative displacement in the first direction.

[0028] Each guide portion 310 has an inclined guide surface, and the guide protrusion 320 contacts the inclined guide surface segment by segment as it moves with the slider 32. Due to the circumferential arrangement of the four guide members 31 and the staggered distribution of the guide portions 310 in the first direction, the relative displacement of the slider 32 between the guide members 31 and the guide members 31 does not result in synchronous and consistent engagement in the four directions, but rather in a sequential and spatially different manner. The guide protrusion 320 contacts different inclined guide surfaces at different stages, enabling the slider 32 to form a step-by-step displacement state in the horizontal direction, and driving the upper die cutter 11 connected to it to achieve an orderly rotary cutting motion on the outer periphery of the workpiece 100.

[0029] Specifically, in this embodiment, the trajectory of the upper die cutter 11 can be preset to move forward, to the right, to the back, to the left, forward, and to the right. Through the sequential and continuous movement in the above five directions, the entire rotary cutting edge trimming action is completed.

[0030] In one example, the upper mold assembly 1 further includes an upper mold base 12, an upper fixed base 13, and a push rod 14. The upper fixed base 13 is disposed at the bottom end of the upper mold base 12, and the push rod 14 penetrates the upper mold base 12 and is slidably connected to the upper mold base 12. The bottom end and the upper end face of the upper fixed seat 13 extend through the first direction to form a transmission cavity 130. The guide member 31 is fixedly connected to the cavity wall of the transmission cavity 130, and the slider 32 is slidably disposed in the transmission cavity 130.

[0031] In the above embodiment, the upper mold assembly 1 includes an upper mold base 12, an upper fixed base 13, and a push rod 14. The upper fixed base 13 is disposed at the bottom end of the upper mold base 12, and the two are arranged vertically in a first direction. The push rod 14 penetrates the upper mold base 12 and is slidably connected to the upper mold base 12, allowing the push rod 14 to move relative to the upper mold base 12 along the first direction. The bottom end and upper end face of the upper fixed base 13 extend through to form a transmission cavity 130 along the first direction. The transmission cavity 130 is located inside the upper fixed base 13 and extends through in the first direction, making it the receiving space for the rotary cutting transmission assembly 3. The guide member 31 is fixedly connected to the cavity wall of the transmission cavity 130, while the slider 32 is slidably disposed within the transmission cavity 130. Thus, both the guide member 31 and the slider 32 are arranged inside the upper fixed seat 13, and their relative positional relationship is limited by the cavity wall of the transmission cavity 130. The transmission cavity 130 not only provides space for the movement of the slider 32 but also allows the guide member 31 to be fixedly established inside the upper mold assembly 1, thereby forming a relative guiding relationship. The slider 32 is located within the transmission cavity 130 and slides in cooperation with the guide member 31. That is, the displacement range of the slider 32 is jointly limited by the internal space of the upper fixed seat 13 and the arrangement position of the guide member 31, and it will not move independently from the upper mold assembly 1. The push rod 14 is disposed at the upper mold base 12 and slides in cooperation with the upper mold base 12, so that when the upper mold assembly 1 is pressed down as a whole, the push rod 14 can form a displacement cooperation with the upper mold base 12, thereby creating structural conditions for the relative displacement of the guide member 31 and the slider 32 in subsequent actions.

[0032] In one example, the upper mold assembly 1 further includes a clamping cylinder 15, a pushing and fixing ring 16, and a stripper plate 17. The clamping cylinder 15 and the pushing and fixing ring 16 are both fixedly connected to the bottom end of the slider 32. The pushing and fixing ring 16 is sleeved on the outer periphery of the clamping cylinder 15. The upper mold cutter 11 passes through the clamping cylinder 15. The stripper plate 17 is disposed at the bottom end of the upper fixed seat 13, and the stripper plate 17 has a through hole for the clamping cylinder 15 to pass through. The push fixing ring 16 is fixedly connected to the push rod 18, which penetrates the stripper plate 17. When the upper die cutter 11 and the lower die cutter 21 are engaged, the push rod 18 abuts against the lower die assembly 2. The upper die assembly 1 presses down to cause the guide member 31 to move relative to the slider 32 in the first direction.

[0033] In the above embodiment, the upper mold assembly 1 further includes a clamping cylinder 15, a pushing and fixing ring 16, and a stripper plate 17. The clamping cylinder 15 and the pushing and fixing ring 16 are both fixedly connected to the bottom end of the slider 32. The pushing and fixing ring 16 is sleeved on the outer periphery of the clamping cylinder 15, and both are located below the slider 32 in the first direction. The upper mold cutter 11 passes through the clamping cylinder 15, and the clamping cylinder 15 forms a receiving and connecting relationship with the upper mold cutter 11, so that the upper mold cutter 11 can move as a whole with the slider 32 and the clamping cylinder 15. The stripper plate 17 is disposed at the bottom end of the upper fixed seat 13, and the stripper plate 17 has a through hole for the clamping cylinder 15 to pass through. The clamping cylinder 15 can thus pass through the stripper plate 17 and extend to the lower working area. The stripper plate 17 is disposed around the periphery of the clamping cylinder 15 at the bottom end of the upper fixed seat 13.

[0034] A push rod 18 is fixedly connected to the push fixing ring 16. The push rod 18 penetrates the stripper plate 17 and continues to extend downward, thus forming a vertically connected relative arrangement between the push fixing ring 16, the push rod 18, and the stripper plate 17. The slider 32, the clamping cylinder 15, the push fixing ring 16, and the upper die cutter 11 constitute a set of linkage components. The stripper plate 17 is located on the periphery of this linkage component and avoids the clamping cylinder 15 through a through hole. The push rod 18 is fixedly connected to the push fixing ring 16, and the axial position of the push fixing ring 16 can be transmitted downward through the push rod 18. When the upper die cutter 11 and the lower die cutter 21 are engaged, the push rod 18 abuts against the lower die assembly 2, thus the push fixing ring 16 is supported and constrained from the lower die side during subsequent downward pressing. Since the push fixing ring 16 is fixedly connected to the bottom end of the slider 32, after the push rod 18 abuts, the continued downward movement of one side of the slider 32 is restricted, while the guide member 31 still moves with the upper die assembly 1 in the first direction, thus forming a relative displacement between the guide member 31 and the slider 32. The relative displacement is converted into the stepwise displacement of the slider 32 in the horizontal direction after the guide part 310 cooperates with the guide protrusion 320, thereby realizing the rotary cutting action of the upper die cutter 11 relative to the lower die cutter 21.

[0035] In one example, the lower mold assembly 2 further includes a lower template 22, a lower mold base 23, a clamping plate 24, and a fixing block 25. The lower template 22 is disposed above the lower mold base 23. The lower template 22 has a tool groove, and the lower mold tool 21 is embedded in the tool groove. The clamping plate 24 is distributed below the lower template 22 and is connected to the lower mold base 23. Two symmetrically arranged fixing blocks 25 are fixedly connected to the clamping plate 24. The fixing blocks 25 and the clamping plate 24 form a fixing groove for clamping the workpiece 100 to be processed. The workpiece 100 to be processed, which is fixed in the fixing groove, passes through the lower template 22 and the lower mold cutter 21 and extends above the lower mold cutter 21.

[0036] In the above embodiment, the lower mold assembly 2 includes a lower template 22, a lower mold base 23, a clamping plate 24, and a fixing block 25. The lower template 22 is disposed above the lower mold base 23, and the lower template 22 and the lower mold base 23 form an upper and lower support relationship. A tool groove is provided on the lower template 22, and the lower mold tool 21 is embedded in the tool groove, thereby confining the lower mold tool 21 within the lower template 22 and forming an installation relationship with the lower template 22.

[0037] The clamping plate 24 is located below the lower template 22 and is connected to the lower mold base 23, so that the clamping plate 24 is located in the lower region between the lower template 22 and the lower mold base 23. Two symmetrically arranged fixing blocks 25 are fixedly connected to the clamping plate 24, and a fixing groove is formed between the fixing blocks 25 and the clamping plate 24. After the workpiece 100 is fixed in the fixing groove, a part of it passes upward through the lower template 22 and the lower mold cutter 21 and extends above the lower mold cutter 21.

[0038] The workpiece 100 is positioned and held in the lower mold assembly 2 by a multi-level positioning and clamping relationship formed by the clamping plate 24, the fixing block 25, the lower template 22, and the lower mold cutter 21. The workpiece 100 passes upward through the fixing groove through the lower template 22 and the lower mold cutter 21, so that the part of the workpiece 100 to be cut is above the lower mold cutter 21 and enters the working area of ​​the upper mold cutter 11. The fixing groove formed by the fixing block 25 and the clamping plate 24 defines the position of the workpiece 100 in the horizontal direction, and the state of the workpiece 100 passing through the lower template 22 and the lower mold cutter 21 further defines the relative position of the workpiece 100 in the vertical direction. When the upper mold assembly 1 is pressed down, the upper mold cutter 11 can form an upper and lower mating relationship with the lower mold cutter 21 around the upper outer periphery of the workpiece 100. The lower template 22 supports the lower mold cutter 21, and the clamping plate 24 and the fixing block 25 jointly hold the workpiece 100. The three work together to form the basic support and limiting structure of the working area of ​​the lower mold side.

[0039] In one example, the lower mold assembly 2 further includes a first pad 26, a lower fixed seat 27, a lower floating plate 28, and a positioning core 29. The first pad 26 is disposed at the bottom end of the clamping plate 24. The lower fixed seat 27 is disposed between the lower template 22 and the lower mold base 23. The lower floating plate 28 is connected between the lower fixed seat 27 and the lower mold base 23. The lower fixed seat 27 is provided with a receiving hole 270 for accommodating the first pad 26 and the clamping plate 24. The positioning core 29 is fixedly connected to the lower floating plate and passes through the first pad 26 and the clamping plate 24 for positioning the workpiece 100 to be processed.

[0040] In the above embodiment, the lower mold assembly 2 further includes a first pad 26, a lower fixed seat 27, a lower floating plate 28, and a positioning core 29. The first pad 26 is disposed at the bottom end of the clamping plate 24, so that the clamping plate 24 forms an indirect support relationship with the structure below it through the first pad 26. The lower fixed seat 27 is disposed between the lower template 22 and the lower mold base 23, and the lower floating plate 28 is connected between the lower fixed seat 27 and the lower mold base 23. The lower floating plate 28 is located below the lower fixed seat 27 or adjacent to the lower fixed seat 27, and forms an intermediate structure between the lower fixed seat 27 and the lower mold base 23 that can participate in relative movement. The lower fixed seat 27 is provided with a through-hole 270, and the first pad 26 and the clamping plate 24 are located in the corresponding area of ​​the through-hole 270, so that the first pad 26 and the clamping plate 24 obtain vertical receiving space in the lower fixed seat 27. The positioning core 29 is fixedly connected to the lower floating plate 28, and the positioning core 29 extends from bottom to top through the first pad 26 and the clamping plate 24, and continues to extend to the mating area of ​​the workpiece 100 to be processed.

[0041] After the positioning core 29 is fixedly connected to the lower floating plate 28, the position of the positioning core 29 is directly supported and limited by the lower floating plate 28, thereby connecting the lower floating plate 28 with the positioning area of ​​the workpiece 100 by penetrating the first pad 26 and the clamping plate 24. When the workpiece 100 is placed into the lower mold assembly 2, the positioning core 29 can enter the corresponding part of the workpiece 100 and limit the center position of the workpiece 100, so that the workpiece 100 establishes a more stable coaxial relationship with respect to the clamping plate 24, the fixing block 25 and the lower mold cutter 21. The setting of the receiving hole 270 gives the clamping plate 24 and the first pad 26 a clear installation space in the lower fixed seat 27, and the penetrating relationship of the positioning core 29 connects the clamping structure and the positioning structure in series, thereby forming a composite support structure on the lower mold side by the participation of the lower template 22, the lower fixed seat 27, the lower floating plate 28, the first pad 26, the clamping plate 24 and the positioning core 29.

[0042] In one embodiment, a second pad 210 is provided between the lower floating plate 28 and the lower mold base 23. A first ejector pin 211 and a second ejector pin 212 are provided through the lower floating plate 28, the second pad 210 and the lower mold base 23. The first ejector pin 211 and the second ejector pin 212 are provided corresponding to the receiving hole 270. The second ejector pin 212 passes through the first pad 26 and the clamping plate 24. The top end of the first ejector pin 211 abuts against the bottom end of the first pad 26, and the top end of the second pad 210 abuts against the bottom end of the lower mold plate 22.

[0043] In the above embodiment, a second pad 210 is provided between the lower float plate 28 and the lower mold base 23. The second pad 210 is located below the lower float plate 28 and is arranged adjacent to the lower mold base 23. A first ejector pin 211 and a second ejector pin 212 are provided through the lower float plate 28, the second pad 210 and the lower mold base 23. The first ejector pin 211 and the second ejector pin 212 are provided corresponding to the receiving hole 270, and they penetrate through the area where the lower float plate 28, the second pad 210 and the lower mold base 23 are located along a first direction. The second ejector pin 212 continues to penetrate upward through the first pad 26 and the clamping plate 24, so that the second ejector pin 212 establishes a communication relationship with the clamping area where the workpiece 100 is located; the top end of the first ejector pin 211 abuts against the bottom end of the first pad 26, so that the first ejector pin 211 and the first pad 26 form an upper and lower abutting relationship; the top end of the second pad 210 abuts against the bottom end of the lower template 22, so that the second pad 210 and the lower template 22 form a direct support relationship.

[0044] In the above structure, the first ejector pin 211, the second ejector pin 212, the lower float plate 28, the second pad plate 210, and the first pad plate 26 form a longitudinally connected support and holding system. The first ejector pin 211 transmits the supporting force of the lower structure to the first pad plate 26, while the second ejector pin 212 extends further upward to the clamping plate 24 area, thus forming a more direct connection with the structure holding the workpiece 100 in the first direction. The second pad plate 210 is located between the lower float plate 28 and the lower mold base 23, and its top end abuts against the lower mold plate 22, thus forming an intermediate support layer inside the lower mold assembly 2. In this way, a multi-layered support relationship is formed between the lower mold plate 22, the second pad plate 210, the lower float plate 28, the ejector pins, and the first pad plate 26, which not only makes the relative positions of the components inside the lower mold assembly 2 clearer, but also makes the force transmission path between the area where the workpiece 100 is located and the lower support area more continuous.

[0045] In one embodiment, the system further includes a guide post 4 and a reset spring 5. The upper end face of the guide post 4 abuts against the bottom end of the upper mold base 12, and the guide post 4 passes through the upper fixed base 13 and the stripper plate 17. The lower mold plate 22 and the lower mold base 23 are both provided with guide holes for the guide post 4 to pass through. The reset spring 5 is disposed between the stripper plate 17 and the lower mold plate 22. A limiting post 6 is provided through the upper mold base 12, the upper fixed base 13 and the stripper plate 17. The bottom end of the limiting post 6 abuts against the upper end face of the lower mold plate 22 to limit the downward stroke of the upper mold assembly 1.

[0046] In the above embodiment, the mold further includes a guide post 4 and a return spring 5. The upper end face of the guide post 4 abuts against the bottom end of the upper mold base 12. The guide post 4 penetrates downward along the first direction through the upper fixed base 13 and the stripper plate 17. The lower mold plate 22 and the lower mold base 23 are both provided with guide holes for the guide post 4 to pass through, so that the guide post 4 forms a through arrangement between the upper mold assembly 1 and the lower mold assembly 2. The guide post 4 and the guide hole form a guiding fit relationship, so that the downward pressing path of the upper mold assembly 1 relative to the lower mold assembly 2 is restricted by the guide post 4. The return spring 5 is disposed between the stripper plate 17 and the lower mold plate 22, located in the middle position of the mold working area, so that the stripper plate 17 and the lower mold plate 22 form an elastic support relationship. At the same time, a limiting post 6 is provided through the upper mold base 12, the upper fixed base 13 and the stripper plate 17. The limiting post 6 penetrates the above components along the first direction, and the bottom end of the limiting post 6 abuts against the upper end face of the lower mold plate 22.

[0047] In this embodiment, the guide post 4, the return spring 5, and the limiting post 6 constitute a guiding, elastic support, and stroke limiting structure between the upper and lower dies. The guide post 4 passes through the upper fixed seat 13 and the stripper plate 17, and continues into the guide holes of the lower template 22 and the lower die base 23, stabilizing the movement path of the upper die assembly 1 in the first direction and reducing the sway of the upper die assembly 1. The return spring 5 is located between the stripper plate 17 and the lower template 22, maintaining an elastic gap between the stripper plate 17 and the lower template 22. The limiting post 6 passes through the upper die base 12, the upper fixed seat 13, and the stripper plate 17, and its bottom end forms an abutment relationship with the upper surface of the lower template 22. When the upper die assembly 1 moves downward along the first direction to a predetermined position, the limiting post 6 and the lower template 22 form a stroke endpoint constraint, thereby limiting the downward pressure limit position of the upper die assembly 1.

[0048] In one embodiment, the lower mold assembly 2 further includes a scrap plate 213, a stripper block 214, and a scrap ring 215. The scrap plate 213 is disposed on the upper end face of the lower mold plate 22. The stripper block 214 and the scrap ring 215 are both sleeved on the outside of the upper mold cutter 11. The scrap ring 215 presses against the stripper block 214 and is fixedly connected to the scrap plate 213. The waste plate 213 has a waste channel 216 that passes over the workpiece 100 to be processed. The opposite sides of the waste channel 216 are respectively connected to an air pipe interface 217 and a waste guide block 218 to blow and guide the waste out.

[0049] In the above embodiment, the lower mold assembly 2 further includes a scrap plate 213, a stripper block 214, and a scrap ring 215. The scrap plate 213 is disposed on the upper end face of the lower mold plate 22 and located on the outer periphery of the cutting edge area of ​​the workpiece 100. The stripper block 214 and the scrap ring 215 are both sleeved on the outer side of the upper mold cutter 11, forming a sleeve relationship along the outer periphery of the upper mold cutter 11. The scrap ring 215 presses against the stripper block 214 and is fixedly connected to the scrap plate 213. The scrap plate 213, the scrap ring 215, and the stripper block 214 constitute an outer peripheral structure surrounding the cutting edge area of ​​the workpiece 100. A scrap channel 216 is provided in the scrap plate 213. The scrap channel 216 extends in the direction passing over the workpiece 100 and penetrates the body of the scrap plate 213. The waste channel 216 is connected to an air pipe interface 217 and a waste guide block 218 on opposite sides. The air pipe interface 217 is connected to an external air passage, and the waste guide block 218 is located on the other side of the waste channel 216.

[0050] The scrap plate 213 serves as the base for receiving the outer periphery of the cutting area. The scrap ring 215 and the stripper block 214 are arranged around the upper die cutter 11, so that the scrap generated from the cutting of the outer periphery of the workpiece 100 is located within the area defined by the scrap plate 213 and the scrap ring 215. The scrap channel 216 is opened in the scrap plate 213, so that the scrap has a clear exit path after cutting. The air pipe interface 217 is arranged on one side of the scrap channel 216, so that the airflow can enter along the direction of the scrap channel 216. The scrap guide block 218 is located on the opposite side, which limits the direction of the scrap when it leaves the channel. The fixed relationship between the scrap ring 215 and the scrap plate 213 and the pressing relationship with the stripper block 214 keep the stripper block 214 in the outer periphery of the upper die cutter 11, so that when the upper die cutter 11 and the workpiece 100 are engaged, they form an adjacent engagement area with the outer periphery of the workpiece 100.

[0051] In one embodiment, the guide protrusion 320 is a trapezoidal block protruding outward from the outer wall of the slider 32, the trapezoidal block extends perpendicularly to the first direction, and the guide portion 310 is a trapezoidal groove formed on the side of the guide member 31 facing the slider 32, the groove wall of the trapezoidal groove forming the inclined guide surface.

[0052] In the above embodiment, the guide protrusion 320 is a trapezoidal block protruding outward from the outer wall of the slider 32. The trapezoidal block is formed by protruding integrally from the outer wall of the slider 32 or fixedly disposed on the outer wall of the slider 32, and its extension direction is perpendicular to the first direction. Since the trapezoidal block protrudes outward along the outer wall of the slider 32, the trapezoidal block is located in the relative mating area between the slider 32 and the guide member 31. The guide portion 310 is a trapezoidal groove formed on the side of the guide member 31 facing the slider 32. The trapezoidal groove is distributed along the first direction on the inner wall of the guide member 31. The groove wall of the trapezoidal groove forms an inclined guide surface, and the inclined guide surface unfolds towards the slider 32, so that when the trapezoidal block enters the area where the trapezoidal groove is located, the outer surface of the trapezoidal block can form a contact mating with the groove wall of the trapezoidal groove. The trapezoidal block and the trapezoidal groove form a matching shape in cross-section, and the groove wall of the trapezoidal groove constitutes the guide surface. When the guide member 31 moves relative to the slider 32 along the first direction, the trapezoidal block can be guided along the groove wall of the trapezoidal groove.

[0053] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A rotary cutting die, characterized in that, include: Upper mold assembly (1), wherein the upper mold assembly (1) is provided with an upper mold cutter (11); The lower die assembly (2) is provided with a lower die cutter (21) that cooperates with the upper die cutter (11). The lower die cutter (21) has a placement hole for placing the workpiece (100) to be processed. The workpiece (100) to be processed has a cut-out annular portion extending out of the placement hole. The rotary cutting transmission assembly (3) includes a guide (31) and a slider (32) that are slidably connected. The slider (32) is connected to the upper die cutter (11), and the guide (31) is connected to the upper die assembly (1). One side of the guide (31) is provided with a guide portion (310) distributed along a first direction, and the slider (32) is provided with a guide protrusion (320) that cooperates with the guide portion (310). When the upper mold assembly (1) is pressed down to make the upper mold cutter (11) cooperate with the lower mold cutter (21), the guide (31) moves relative to the slider (32) along the first direction, and the guide part (310) and the guide protrusion (320) abut against each other to drive the slider (32) to move horizontally in steps around the placement hole along the second direction and the third direction, so as to perform rotary cutting on the annular part to be cut of the workpiece (100).

2. The upper rotary cutting die according to claim 1, characterized in that, The guide member (31) is provided in four parts. The four guide members (31) are disposed on the outer periphery of the slider (32). The guide part (310) is provided on the side of the guide member (31) facing the slider (32). The four guide protrusions (320) are respectively provided corresponding to the four guide parts (310). The two adjacent guide parts (310) and the two opposite guide parts (310) are all staggered along the first direction, and the guide part (310) forms an inclined guide surface.

3. The upper rotary cutting die according to claim 1, characterized in that, The upper mold assembly (1) also includes an upper mold base (12), an upper fixed base (13) and a push rod (14). The upper fixed base (13) is located at the bottom end of the upper mold base (12), and the push rod (14) penetrates the upper mold base (12) and is slidably connected to the upper mold base (12). The bottom end and the upper end face of the upper fixed seat (13) pass through to form a transmission cavity (130) along the first direction. The guide (31) is fixedly connected to the cavity wall of the transmission cavity (130). The slider (32) is slidably disposed in the transmission cavity (130).

4. The upper rotary cutting die according to claim 3, characterized in that, The upper mold assembly (1) also includes a clamping cylinder (15), a pushing and fixing ring (16), and a stripper plate (17). The clamping cylinder (15) and the pushing and fixing ring (16) are both fixedly connected to the bottom end of the slider (32). The pushing and fixing ring (16) is sleeved on the outer periphery of the clamping cylinder (15). The upper mold cutter (11) passes through the clamping cylinder (15). The stripper plate (17) is set at the bottom end of the upper fixed seat (13), and the stripper plate (17) has a through hole for the clamping cylinder (15) to pass through. The push fixing ring (16) is fixedly connected to a push rod (18), which penetrates the stripper plate (17). When the upper die cutter (11) and the lower die cutter (21) cooperate, the push rod (18) abuts against the lower die assembly (2). The upper die assembly (1) presses down to make the guide (31) move relative to the slider (32) in the first direction.

5. The upper rotary cutting die according to claim 4, characterized in that, The lower mold assembly (2) also includes a lower template (22), a lower mold base (23), a clamping plate (24) and a fixing block (25). The lower template (22) is located above the lower mold base (23). The lower template (22) has a tool groove, and the lower mold tool (21) is embedded in the tool groove. The clamping plate (24) is distributed below the lower template (22) and is connected to the lower mold base (23). Two symmetrically arranged fixing blocks (25) are fixedly connected to the clamping plate (24). The fixing blocks (25) and the clamping plate (24) form a fixing groove for clamping the workpiece (100). The workpiece (100) fixed in the fixing groove passes through the lower template (22) and the lower mold cutter (21) and extends above the lower mold cutter (21).

6. The upper rotary cutting die according to claim 5, characterized in that, The lower mold assembly (2) further includes a first pad (26), a lower fixing seat (27), a lower floating plate (28), and a positioning core (29). The first pad (26) is disposed at the bottom end of the clamping plate (24). The lower fixing seat (27) is disposed between the lower template (22) and the lower mold base (23). The lower floating plate (28) is connected between the lower fixing seat (27) and the lower mold base (23). The lower fixing seat (27) is provided with a receiving hole (270) for accommodating the first pad (26) and the clamping plate (24). The positioning core (29) is fixedly connected to the lower floating plate and passes through the first pad (26) and the clamping plate (24) for positioning the workpiece (100).

7. The upper rotary cutting die according to claim 6, characterized in that, A second pad (210) is provided between the lower floating plate (28) and the lower mold base (23). A first ejector pin (211) and a second ejector pin (212) are provided through the lower floating plate (28), the second pad (210) and the lower mold base (23). The first ejector pin (211) and the second ejector pin (212) are provided corresponding to the receiving hole (270). The second ejector pin (212) passes through the first pad (26) and the clamping plate (24). The top end of the first ejector pin (211) abuts against the bottom end of the first pad (26), and the top end of the second pad (210) abuts against the bottom end of the lower mold plate (22).

8. The upper rotary cutting die according to claim 5, characterized in that, It also includes a guide post (4) and a reset spring (5). The upper end face of the guide post (4) abuts against the bottom end of the upper mold base (12), and the guide post (4) passes through the upper fixed base (13) and the stripper plate (17). The lower mold plate (22) and the lower mold base (23) are both provided with guide holes for the guide post (4) to pass through. The reset spring (5) is located between the stripper plate (17) and the lower mold plate (22). Limiting posts (6) are provided through the upper mold base (12), upper fixed base (13) and stripper plate (17). The bottom end of the limiting post (6) abuts against the upper end face of the lower template (22) to limit the downward stroke of the upper mold assembly (1).

9. The upper rotary cutting die according to claim 5, characterized in that, The lower mold assembly (2) also includes a scrap plate (213), a stripper block (214), and a scrap ring (215). The scrap plate (213) is disposed on the upper end face of the lower mold plate (22). The stripper block (214) and the scrap ring (215) are both sleeved on the outside of the upper mold cutter (11). The scrap ring (215) presses against the stripper block (214) and is fixedly connected to the scrap plate (213). The waste plate (213) has a waste channel (216) that passes over the workpiece (100). The waste channel (216) is connected to an air pipe interface (217) and a waste guide block (218) on opposite sides to blow and guide the waste out.

10. The upper rotary cutting die according to claim 2, characterized in that, The guide protrusion (320) is a trapezoidal block protruding outward from the outer wall of the slider (32). The trapezoidal block extends perpendicularly to the first direction. The guide part (310) is a trapezoidal groove opened on the side of the guide member (31) facing the slider (32). The groove wall of the trapezoidal groove forms the inclined guide surface.

Images