Multi-process multi-station stamping die

Abstract

A multi-process multi-station stamping die, comprising a lower die assembly (1), an upper die assembly (2), and a stamping assembly (3). The lower die assembly (1) comprises a lower die base (11), a rotating disc (12) and a plurality of rolling assemblies (13), the plurality of rolling assemblies (13) are sandwiched between the rotating disc (12) and the lower die base (11), and a floatable and rotatable ball (133) is provided in each rolling assembly (13); the upper die assembly (2) comprises an upper die base (21), a fixed upper die assembly (22), a floating upper die assembly (23), and upper die elastic members (24), and two ends of the upper die elastic members (24) are respectively connected to the upper die base (21) and the floating upper die assembly (23); and the stamping assembly (3) comprises a plurality of punches (31) capable of executing different stamping processes, and bearing stand columns (32) configured to bear a product to be stamped, first ends of the punches (31) are connected to the fixed upper die assembly (22), second ends of the punches (31) slidably pass through the floating upper die assembly (23), and the plurality of bearing stand columns (32) are fixedly arranged on the rotating disc (12).

Description

Multi-sequence multi-position stamping die

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on January 16, 2024, with application number 202420104475.4. The entire contents of the above application are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of mold technology, for example, to a multi-sequence multi-position stamping mold. Background Art

[0003] By using a stamping machine and a stamping die set, various parts can be stamped and assembled, stamped and formed, riveted or riveted. The common stamping method of a stamping machine is to stamp a single product. After the stamping is completed, it is taken out and a new product is placed to continue stamping. This method can only complete one product in one stamping cycle, and its production efficiency is extremely low.

[0004] Therefore, in order to increase the stamping speed and improve production efficiency, the original stamping die set is upgraded and modified, and multiple stamping stations are set up corresponding to the punch. The punch is used to stamp products on different stamping stations by rotating the stamping die.

[0005] However, a stamping die of this type of structure can only perform the same stamping process on multiple products. When the next stamping process needs to be performed, it needs to be moved to the stamping machine that performs the next stamping process for stamping. The process of disassembly, assembly and movement will still waste a lot of time and reduce production efficiency. In addition, electric drive is usually used in related technologies to achieve mold rotation. Therefore, the original mold needs to be adaptively modified, which further increases the complexity of the structure. It not only increases the difficulty of manufacturing and maintenance, but also leads to high manufacturing and maintenance costs. In addition, when the stamping die is currently opened, the upper and lower molds will separate instantly, resulting in the instantaneous disappearance of the pressure applied to the product, which will cause certain deformation of the product, thereby affecting the quality and effect of the product stamping.

[0006] Summary of the Invention

[0007] The present application provides a multi-sequence and multi-position stamping die with high production efficiency, easy manufacturing and maintenance, low manufacturing and maintenance costs, and good stamping quality and stamping effect.

[0008] The present application provides a multi-sequence multi-position stamping die, which comprises:

[0009] A lower die assembly, the lower die assembly comprising a lower die base, a turntable and a plurality of rolling assemblies, wherein the plurality of rolling assemblies are sandwiched between the turntable and the lower die base, wherein balls capable of floating up and down are provided in the rolling assemblies, and the balls are freely rotatable, so that the turntable is rotatably mounted on the lower die base;

[0010] An upper mold assembly, comprising an upper mold base, a fixed upper mold assembly, a floating upper mold assembly, and an upper mold elastic member, wherein the fixed upper mold assembly is fixedly connected to the upper mold base, a first end of the upper mold elastic member is connected to the upper mold base, and a second end passes through the fixed upper mold assembly and is connected to the floating upper mold assembly;

[0011] A stamping assembly, which includes multiple punches that can perform different stamping processes and supporting columns corresponding to the multiple punches one by one. The first end of the punch is connected to the fixed upper mold assembly, and the second end can be slidably inserted into the floating upper mold assembly. The multiple supporting columns are fixed on the turntable, and the supporting columns are configured to support the products to be stamped.

[0012] Optionally, the rolling assembly further includes a rolling mounting seat and a rolling elastic member, wherein the rolling mounting seat is provided with a mounting chamber and a first through hole connected to the mounting chamber, the ball is rotatably arranged in the mounting chamber, the first end of the rolling elastic member abuts against the ball, and the second end abuts against the inner wall of the mounting chamber away from the first through hole, and the rolling elastic member is configured so that a part of the ball has a movement tendency to always extend out of the first through hole.

[0013] Optionally, the lower mold assembly further includes a connecting disc, which is fixed on the side of the turntable away from the lower mold base, and the supporting column is connected to the turntable through the connecting disc, and the connecting disc is provided with a first mounting groove corresponding to the multiple supporting columns one by one. The stamping assembly further includes a column mounting seat, the supporting column is inserted into the column mounting seat, and the column mounting seat is inserted into the first mounting groove and connected to the turntable.

[0014] Optionally, the multi-sequence and multi-position stamping die also includes a limit assembly, and the limit assembly includes a central limit column and a peripheral limit seat, the central limit column is arranged at the center of the turntable and the connecting disc, and passes through the turntable and the connecting disc to be connected to the lower die seat, the peripheral limit seat is fixed on the side of the turntable and the connecting disc away from the center, and is connected to the lower die seat, and the peripheral limit seat is provided with a limiting arc surface on the side facing the turntable and the connecting disc, and the limiting arc surface abuts the circumferential surface of the turntable and the connecting disc.

[0015] Optionally, the limiting assembly further comprises a rotation limiting plate, the rotation limiting plate being connected to a side of the peripheral limiting seat facing away from the lower die seat, and a surface of the rotation limiting plate facing the lower die seat abutting against a surface of the connecting disc facing away from the turntable;

[0016] The center limiting column is stepped and includes a large diameter end and a small diameter end connected to the large diameter end. The surface of the large diameter end facing the small diameter end abuts against the surface of the connecting disc facing away from the turntable, and the small diameter end passes through the connecting disc and the turntable and is connected to the lower mold base.

[0017] Optionally, the limit assembly further includes an upper limit column and a lower limit column, the upper limit column is connected to the upper mold base, and the lower limit column is connected to the lower mold base. After the upper mold assembly and the lower mold assembly are closed in place, the upper limit column and the lower limit column abut against each other.

[0018] Optionally, a plurality of anti-rotation grooves are provided on the side wall of the connecting disc, and the multi-sequence multi-position stamping die further includes an anti-rotation assembly, the anti-rotation assembly including an anti-rotation handle and an anti-rotation elastic member, the anti-rotation handle passes through the peripheral limit seat and is inserted into the anti-rotation groove, and the anti-rotation elastic member is configured to make the anti-rotation handle have a movement tendency to always be inserted into the anti-rotation groove.

[0019] Optionally, the stamping assembly also includes a stamping connecting seat and a stamping guide sleeve corresponding one by one to the multiple punches, the stamping connecting seat is embedded in the fixed upper die assembly, the stamping guide sleeve is embedded in the floating upper die assembly, the first end of the punch is connected to the stamping connecting seat, and the second end can be slidably passed through the stamping guide sleeve.

[0020] Optionally, the stamping assembly further includes a fixed sleeve, which is sleeved on the supporting column. The fixed sleeve and the supporting column are configured to clamp the product to be stamped. The fixed sleeve is provided with an avoidance hole for avoiding the stamping area of ​​the product to be stamped. The stamping guide sleeve is provided with a guide groove on the side facing the supporting column that is plugged into and cooperates with the fixed sleeve.

[0021] Optionally, the multi-sequence multi-position stamping die further includes a guide assembly, the guide assembly including an outer guide sleeve, an outer guide post, an inner guide block and an inner guide post;

[0022] The outer guide sleeve is fixedly connected to the lower die base, the outer guide post is fixedly connected to the upper die base, and the outer guide sleeve and the outer guide post are plugged into each other;

[0023] The inner guide block is fixedly connected to the connecting disc and is provided with a guide hole. The first end of the inner guide column is fixedly connected to the fixed upper mold assembly, and the second end passes through the floating upper mold assembly and is plugged into the guide hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] FIG1 is a schematic diagram of a multi-sequence multi-position stamping die during mold closing provided by an embodiment of the present application;

[0025] FIG2 is a schematic diagram of a multi-sequence multi-position stamping die during mold opening according to an embodiment of the present application;

[0026] FIG3 is an assembly diagram of the upper half of the multi-sequence multi-position stamping die provided in an embodiment of the present application;

[0027] FIG4 is an assembly diagram of the lower half of the multi-sequence multi-position stamping die provided in an embodiment of the present application;

[0028] FIG5 is a structural exploded view of the upper half of the multi-sequence multi-position stamping die provided in an embodiment of the present application;

[0029] FIG6 is a structural exploded view of the lower half of the multi-sequence multi-position stamping die provided in an embodiment of the present application;

[0030] FIG7 is an exploded view of the structure of the punch portion of the multi-sequence multi-position stamping die provided in an embodiment of the present application;

[0031] FIG8 is a front view of a rolling assembly in a multi-sequence multi-position stamping die provided in an embodiment of the present application;

[0032] FIG9 is a cross-sectional view taken along the AA direction in FIG8;

[0033] 10 is a schematic diagram of the connection between the stop assembly and the peripheral limit seat in the multi-sequence multi-position stamping die according to an embodiment of the present application;

[0034] Figure 11 is a cross-sectional view of Figure 10 along the BB direction;

[0035] FIG12 is a schematic structural diagram of the connecting discs in the multi-sequence multi-position stamping die provided in an embodiment of the present application.

[0036] In the picture:

[0037] 1. Lower die assembly; 11. Lower die base; 12. Turntable; 13. Rolling assembly; 131. Rolling mounting seat; 132. Rolling elastic member; 133. Ball bearing; 14. Connecting disc; 141. First mounting slot; 142. Limiting notch; 143. Anti-rotation notch; 144. Center through hole;

[0038] 2. Upper die assembly; 21. Upper die base; 22. Fixed upper die assembly; 221. First connecting plate; 222. First intermediate plate; 2221. Second mounting slot; 23. Floating upper die assembly; 231. Second connecting plate; 2311. Third mounting slot; 232. Second intermediate plate; 2321. Fourth mounting slot; 2322. Mounting notch; 24. Upper die elastic member; 25. Connecting screw;

[0039] 3. Stamping assembly; 31. Punch; 32. Load-bearing column; 33. Column mounting seat; 331. Connecting protrusion; 34. Fixed sleeve; 35. Stamping connecting seat; 36. Stamping guide sleeve; 37. Limiting connecting block;

[0040] 4. Limiting assembly; 41. Center limiting column; 42. Peripheral limiting seat; 421. Limiting arc surface; 43. Rotating limiting plate; 44. Upper limiting column; 45. Lower limiting column;

[0041] 5. Anti-rotation assembly; 51. Anti-rotation handle; 511. Pull rod; 512. Locking rod; 513. Fixing ring; 52. Anti-rotation elastic member;

[0042] 6. Guide assembly; 61. Outer guide sleeve; 62. Outer guide post; 63. Inner guide block; 64. Inner guide post;

[0043] 7. Probe connection plate. DETAILED DESCRIPTION

[0044] The present application will be described below with reference to the accompanying drawings and embodiments. It will be understood that the specific embodiments described herein are intended only to illustrate the present application and are not intended to limit the present application. In addition, for ease of description, only portions of the present application, not all structures, are shown in the accompanying drawings.

[0045] In the description of this application, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0046] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0047] In the description of this embodiment, terms such as "upper," "lower," "right," and "left" are used to refer to positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0048] In order to improve the production efficiency of stamping work, simplify the structure of the stamping die, reduce the difficulty and cost of manufacturing and maintenance, and improve the stamping quality and stamping effect, this embodiment provides a multi-sequence multi-position stamping die.

[0049] As shown in Figures 1 to 12, the multi-sequence multi-position stamping die includes a lower die assembly 1, an upper die assembly 2 and a stamping assembly 3. The lower die assembly 1 includes a lower die base 11, a turntable 12 and a plurality of rolling assemblies 13. A plurality of rolling assemblies 13 are sandwiched between the turntable 12 and the lower die base 11. Balls 133 that can float up and down are provided in the rolling assembly 13, and the balls 133 can rotate freely so that the turntable 12 can be rotatably arranged on the lower die base 11. The upper die assembly 2 includes an upper die base 21, a fixed upper die assembly 22, a floating upper die assembly 23 and an upper die elastic member 24. The fixed upper die assembly 22 is fixedly connected to the upper die base 21. The first end of the upper mold elastic member 24 is connected to the upper mold base 21, and the second end of the upper mold elastic member 24 opposite to the first end of the upper mold elastic member 24 passes through the fixed upper mold assembly 22 and is connected to the floating upper mold assembly 23. The stamping assembly 3 includes a plurality of punches 31 that can perform different stamping processes and supporting columns 32 corresponding to the plurality of punches 31 one by one. The first end of the punch 31 is connected to the fixed upper mold assembly 22, and the second end of the punch 31 opposite to the first end of the punch 31 can be slidably passed through the floating upper mold assembly 23. The plurality of supporting columns 32 are fixed on the turntable 12, and the supporting columns 32 are configured to support the products to be stamped.

[0050] By connecting a plurality of punches 31 for performing different stamping processes to the fixed upper die assembly 22, connecting the supporting columns 32 corresponding to the plurality of punches 31 to carry the products to be stamped to the turntable 12, and setting a rolling assembly 13 that can rotate the turntable 12 between the turntable 12 and the lower die base 11, by rotating the turntable 12, the supporting columns 32 drive the products to be stamped thereon to rotate with the turntable 12, and using the punches 31 performing different stamping processes to perform stamping, the stamping of multiple products and multiple processes can be achieved, thereby greatly improving the efficiency of the stamping process. The production efficiency of the stamping work is improved, and a freely rotatable ball 133 is provided in the rolling assembly 13, so that the turntable 12 and the lower die base 11 are in point contact, so that the rotation of the turntable 12 can be achieved manually, which simplifies the structure of the mold, facilitates maintenance and manufacturing, and reduces the cost of maintenance and manufacturing. In addition, the ball 133 can also float up and down, and cooperate with the floating upper die assembly 23 that is floated by the upper die elastic member 24, so that when the mold is opened, the floating upper die assembly 23 will not be immediately disengaged from the product, and the product will still be under a certain pressure, avoiding deformation caused by sudden force changes on the product, and improving the stamping quality and stamping effect.

[0051] The multi-sequence and multi-position stamping die can be applied to the stamping process of different products in different fields by replacing different punches 31 and supporting columns 32. In this embodiment, the multi-sequence and multi-position stamping die can be used to realize the stamping process of riveting the battery cover. In this embodiment, in order to facilitate the connection between the rolling assembly 13 and the lower die base 11, a plurality of mounting blind holes are opened on the lower die base 11, and the rolling assembly 13 is embedded in the mounting blind holes. In order to reduce the friction resistance when rotating the turntable 12, the number of rolling assemblies 13 can be freely set. In this embodiment, a total of twelve rolling assemblies 13 are provided, of which three are in a group. The four groups of rolling assemblies 13 are evenly distributed on the lower die base 11 at 90 degrees with the center of the turntable 12 as the base point.

[0052] In the upper mold assembly 2, the fixed upper mold assembly 22 is composed of a first connecting plate 221 and a first intermediate plate 222. The first connecting plate 221 is connected to the upper mold base 21, and the first intermediate plate 222 is connected to the first connecting plate 221 through bolts and positioning pins. The floating upper mold assembly 23 is composed of a second connecting plate 231 and a second intermediate plate 232, wherein the first end of the upper mold elastic member 24 is connected to the upper mold base 21, and the second end passes through the first connecting plate 221 and the first intermediate plate 222 to be connected to the second connecting plate 231, and the second intermediate plate 232 is connected to the second connecting plate 231 by bolts and locating pins. In order to facilitate the connection of the upper mold elastic member 24 to the upper mold base 21, the upper mold assembly 2 also includes a connecting top screw 25. The upper mold base 21 is provided with a threaded hole corresponding to the upper mold elastic member 24, and the connecting top screw 25 is threadedly connected to the threaded hole. The first end of the upper mold elastic member 24 is connected to the connecting top screw 25, and the second end is connected to the second connecting plate 231. In this embodiment, the number of upper mold elastic members 24 can be freely set according to needs. In this embodiment, there are ten upper mold elastic members 24. For example, the upper mold elastic member 24 is a spring. When the mold is closed, the spring is compressed, and when the mold is opened, the spring is stretched.

[0053] In this embodiment, the number of punches 31 can be set according to different stamping processes. In this embodiment, there are four steps in the stamping and riveting of the battery cover, so four punches 31 set to perform different stamping processes are connected to the fixed upper mold assembly 22, and the four punches 31 are evenly distributed on the fixed upper mold assembly 22.

[0054] Optionally, as shown in Figures 8 and 9, the rolling assembly 13 also includes a rolling mounting seat 131 and a rolling elastic member 132. The rolling mounting seat 131 is provided with a mounting chamber and a first through hole connected to the mounting chamber. The ball 133 is rotatably arranged in the mounting chamber. The first end of the rolling elastic member 132 abuts against the ball 133, and the second end of the rolling elastic member 132 opposite to the first end of the rolling elastic member 132 abuts against the inner wall of the mounting chamber away from the first through hole. The rolling elastic member 132 is configured so that a part of the ball 133 has a movement tendency to always extend out of the first through hole.

[0055] By setting a rolling elastic member 132 that abuts against the ball 133, the ball 133 compresses the rolling elastic member 132 when subjected to force, thereby achieving the up and down floating of the ball 133, so that during stamping, the ball 133 is pressed back into the rolling mounting seat 131, thereby avoiding damage to the ball 133 during the stamping process, and changing the turntable 12 and the lower die seat 11 into surface contact, thereby reducing stress concentration.

[0056] In this embodiment, the diameter of the first through hole is smaller than the maximum diameter of the ball 133, thereby ensuring that the ball 133 will not be pushed out of the installation chamber under the action of the rolling elastic member 132. The rolling elastic member 132 only contacts the ball 133 and is not connected to it, so it does not hinder the rotation of the ball 133. Exemplarily, the rolling elastic member 132 is a spring.

[0057] Optionally, as shown in Figures 4 and 6, the lower mold assembly 1 also includes a connecting disc 14, which is fixed to the side of the turntable 12 away from the lower mold base 11, and the supporting column 32 passes through the connecting disc 14 and is connected to the turntable 12. A first mounting groove 141 corresponding to the supporting column 32 is opened on the connecting disc 14, and the stamping assembly 3 also includes a column mounting seat 33, and the supporting column 32 is inserted in the column mounting seat 33. The column mounting seat 33 is inserted in the first mounting groove 141 and is connected to the turntable 12.

[0058] By setting up the column mounting seat 33, it is convenient to connect the supporting column 32 with the turntable 12, so that the supporting column 32 can rotate with the rotation of the turntable 12, and a connecting disc 14 with a first mounting slot 141 is set above the turntable 12, so as to facilitate positioning when assembling the column mounting seat 33 and ensure the accuracy of the installation position of the column mounting seat 33.

[0059] In this embodiment, a connecting protrusion 331 is provided on the column mounting seat 33, and a limiting slot 142 is provided on the first mounting slot 141. When the column mounting seat 33 is inserted into the first mounting slot 141, the connecting protrusion 331 is inserted into the limiting slot 142, thereby limiting the column mounting seat 33 and preventing the column mounting seat 33 from being dislocated in the first mounting slot 141. A countersunk hole is also provided on the connecting protrusion 331, which facilitates the countersunk bolt to pass through the countersunk hole and be threadedly connected to the turntable 12.

[0060] Optionally, as shown in Figures 4, 6 and 10, the multi-sequence and multi-position stamping die also includes a limit assembly 4, which includes a central limit column 41 and a peripheral limit seat 42. The central limit column 41 is arranged at the center of the turntable 12 and the connecting disc 14, and passes through the turntable 12 and the connecting disc 14 to be connected to the lower die seat 11. The peripheral limit seat 42 is fixed on the side of the turntable 12 and the connecting disc 14 away from the center of the circle, and is connected to the lower die seat 11. The peripheral limit seat 42 is provided with a limiting arc surface 421 on the side facing the turntable 12 and the connecting disc 14, and the limiting arc surface 421 abuts against the circumferential surface of the turntable 12 and the connecting disc 14.

[0061] By setting a center limit column 41 at the center of the turntable 12 and the connecting disc 14, which passes through the turntable 12 and the connecting disc 14 and is connected to the lower die base 11, the center limit column 41 plays a limiting role on the inner side of the turntable 12 and the connecting disc 14 when they rotate. By setting an outer limit seat 42 on the side of the turntable 12 and the connecting disc 14 away from the center, and making the limiting arc surface 421 on the outer limit seat 42 abut against the circumferential surface of the turntable 12 and the connecting disc 14, it plays a limiting role on the outer side of the turntable 12 and the connecting disc 14 when they rotate. Through the joint action of the center limit column 41 and the outer limit seat 42, the inner and outer sides of the turntable 12 and the connecting disc 14 are doubly limited when they rotate, ensuring their accurate position and avoiding the load-bearing column 32 rotating with the turntable 12 from being able to accurately dock with the punch 31 due to dislocation, thereby affecting the stamping quality and stamping effect.

[0062] In this embodiment, a central through hole 144 is provided on the connecting disc 14 and the turntable 12, and the central limiting column 41 passes through the central through hole 144 and is connected to the lower mold base 11 by bolts, and multiple peripheral limiting seats 42 can be provided, and the number can be set according to needs. In this embodiment, four peripheral limiting seats 42 are evenly distributed at 90° on the side of the turntable 12 and the connecting disc 14 away from the center of the circle, to ensure that the peripheral limiting seats 42 have sufficient limiting strength for the turntable 12 and the connecting disc 14 during rotation, wherein the peripheral limiting seats 42 are connected to the lower mold base 11 by bolts and positioning pins.

[0063] Optionally, as shown in Figures 4 and 6, the limit assembly 4 also includes a rotation limit plate 43, which is connected to the side of the peripheral limit seat 42 away from the lower mold seat 11, and the surface of the rotation limit plate 43 facing the lower mold seat 11 abuts against the surface of the connecting disc 14 away from the turntable 12. The center limit column 41 is stepped and includes a large diameter end and a small diameter end connected to the large diameter end. The surface of the large diameter end facing the small diameter end abuts against the surface of the connecting disc 14 away from the turntable 12, and the small diameter end passes through the connecting disc 14 and the turntable 12 and is connected to the lower mold seat 11.

[0064] By setting a rotation limit plate 43 on the side of the peripheral limit seat 42 away from the lower die seat 11, and making the surface of the rotation limit plate 43 facing the lower die seat 11 abut against the surface of the connecting disc 14 away from the turntable 12, the center limit column 41 is set to a stepped shape, and the surface of the large diameter end facing the small diameter end abuts against the surface of the connecting disc 14 away from the turntable 12, so that the rotation limit plate 43 and the large diameter end of the center limit column 41 cooperate with each other, and play a limiting role in the height direction of the connecting disc 14, avoiding vertical displacement of the connecting disc 14 and the turntable 12, ensuring their accurate position, and avoiding the load-bearing column 32 rotating with the turntable 12 from being unable to accurately dock with the punch 31 due to displacement, affecting the stamping quality and stamping effect.

[0065] Optionally, as shown in Figure 2, the limit assembly 4 also includes an upper limit column 44 and a lower limit column 45. The upper limit column 44 is connected to the upper mold base 21, and the lower limit column 45 is connected to the lower mold base 11. After the upper mold assembly 2 and the lower mold assembly 1 are closed in place, the upper limit column 44 and the lower limit column 45 abut against each other.

[0066] By setting the upper limit column 44 and the lower limit column 45, when the upper mold assembly 2 and the lower mold assembly 1 are closed, the upper limit column 44 and the lower limit column 45 abut against each other, thereby avoiding over-limit of closing the mold and excessive punching of the punch 31, which may cause damage to the product, thereby improving the safety and reliability of the stamping process.

[0067] In this embodiment, countersunk holes are provided in the upper limit column 44 and the lower limit column 45, and countersunk bolts pass through the corresponding countersunk holes to connect the upper limit column 44 to the upper die base 21 and the lower limit column 45 to the lower die base 11. In this embodiment, the upper limit column 44 and the lower limit column 45 are grouped into two, and there are four groups in total. The four groups of limit columns are evenly distributed at 90° to ensure that the upper limit column 44 and the lower limit column 45 have sufficient supporting strength.

[0068] Optionally, as shown in Figures 10 to 12, a plurality of anti-rotation grooves 143 are provided on the side wall of the connecting disc 14, and the multi-sequence multi-position stamping die also includes an anti-rotation component 5, the anti-rotation component 5 includes an anti-rotation handle 51 and an anti-rotation elastic member 52, the anti-rotation handle 51 passes through the peripheral limit seat 42 and is inserted into the anti-rotation groove 143, and the anti-rotation elastic member 52 is configured to make the anti-rotation handle 51 have a movement tendency of always being inserted into the anti-rotation groove 143.

[0069] By setting the anti-rotation handle 51 and the anti-rotation elastic member 52, the anti-rotation elastic member 52 is configured to make the anti-rotation handle 51 have a movement tendency to always be inserted into the anti-rotation groove 143, so that in the absence of external force, the anti-rotation handle 51 is always inserted into the anti-rotation groove 143 of the connecting disc 14, preventing the connecting disc 14 from rotating.

[0070] In this embodiment, the anti-rotation handle 51 includes a pull rod 511 and a locking rod 512 vertically connected to the pull rod 511, and two spaced apart fixing rings 513 are provided on the locking rod 512, wherein the peripheral limit seat 42 is provided with a stepped hole configured to allow the locking rod 512 to pass through, wherein the fixing ring 513 close to the pull rod 511 abuts against the outer surface of the peripheral limit seat 42, and the fixing ring 513 away from the pull rod 511 is slidably arranged in the stepped hole, wherein the anti-rotation elastic member 52 is sleeved between the two fixing rings 513 of the locking rod 512, and the first end of the anti-rotation elastic member 52 is aligned with the fixing ring 513 away from the pull rod 511. 3 connection, the second end of the anti-rotation elastic member 52, which is opposite to the first end of the anti-rotation elastic member 52, abuts against the stepped surface of the stepped hole. When the connecting disc 14 needs to be rotated, it is only necessary to pull the pull rod 511 outward. At this time, the fixing ring 513 connected to the anti-rotation elastic member 52 slides toward the stepped surface of the stepped hole and compresses the anti-rotation elastic member 52, so that the locking rod 512 disengages from the anti-rotation slot 143, thereby allowing the connecting disc 14 to rotate. After the rotation is completed, it is only necessary to release the pull rod 511. The anti-rotation elastic member 52 returns to its original position, driving the locking rod 512 to reinsert into the anti-rotation slot 143, thereby limiting the position of the connecting disc 14. Among them, the anti-rotation assembly 5 can be provided in multiple groups according to needs. In this embodiment, the anti-rotation assembly 5 is provided on only one of the peripheral limit seats 42. For example, the anti-rotation elastic member 52 is a spring.

[0071] Optionally, as shown in Figures 5 and 7, the stamping assembly 3 also includes a stamping connecting seat 35 and a stamping guide sleeve 36 corresponding one-to-one to multiple punches 31. The stamping connecting seat 35 is embedded in the fixed upper mold assembly 22, and the stamping guide sleeve 36 is embedded in the floating upper mold assembly 23. The first end of the punch 31 is connected to the stamping connecting seat 35, and the second end can be slidably passed through the stamping guide sleeve 36.

[0072] By setting up a stamping connection seat 35, it is convenient to connect the punch 31 with the fixed upper die assembly 22, and a stamping guide sleeve 36 corresponding to the punch 31 is set in the floating upper die assembly 23, so as to guide and limit the movement of the punch 31 and ensure the accuracy of the movement trajectory of the punch 31.

[0073] In this embodiment, since there are four punches 31, four stamping connection seats 35 and stamping guide sleeves 36 are correspondingly provided, wherein the first intermediate plate 222 is provided with a second mounting groove 2221 corresponding one-to-one to the stamping connection seat 35, and the stamping connection seat 35 is inserted into the second mounting groove 2221 and connected to the first connecting plate 221 by bolts. The second connecting plate 231 is also provided with a third mounting slot 2311 corresponding to the second mounting slot 2221, so as to ensure that the stamping connecting seat 35 can be inserted into the second connecting plate 231 when the mold is closed, and the stamping assembly 3 also includes a limiting connecting block 37, wherein the second intermediate plate 232 is provided with a fourth mounting slot 2321 corresponding one-to-one to the stamping guide sleeve 36, and the fourth mounting slot 2321 is also provided with two relatively set mounting slots 2322 for placing the limiting connecting block 37, the limiting connecting block 37 is inserted into the mounting slot 2322, and is connected to the second connecting plate 231 by bolts, wherein the limiting connecting block 37 is provided with an abutting protrusion, and the stamping guide sleeve 36 is provided with an abutting matching protrusion. When the stamping guide sleeve 36 is inserted into the fourth mounting slot 2321, the abutting matching protrusion abuts against the abutting protrusion, thereby realizing the connection between the stamping guide sleeve 36 and the second intermediate plate 232.

[0074] Optionally, as shown in Figure 6, the stamping assembly 3 also includes a fixed sleeve 34, which is sleeved on the supporting column 32, and the product to be stamped is clamped between the fixed sleeve 34 and the supporting column 32. The fixed sleeve 34 is also provided with an avoidance hole for avoiding the stamping area of ​​the product to be stamped, and the stamping guide sleeve 36 is provided with a guide groove on the side facing the supporting column 32, which is plugged into the fixed sleeve 34.

[0075] By sleeved on the supporting column 32, a fixed sleeve 34 is provided to ensure that the product to be stamped is fixed on the supporting column 32 by the fixed sleeve 34, and by providing an avoidance hole on the fixed sleeve 34 to avoid the stamping area of ​​the product to be stamped, it can protect other non-stamping parts without affecting its stamping, thereby improving the quality of the product after stamping, and the stamping guide sleeve 36 is provided with a guide groove on the side facing the supporting column 32, which is plugged into the fixed sleeve 34, thereby playing a role of limiting and guiding the stamping process, thereby ensuring the accuracy of the stamping.

[0076] Optionally, as shown in Figures 2 and 4, the multi-sequence and multi-position stamping die also includes a guide assembly 6, which includes an outer guide sleeve 61 and an outer guide column 62. The outer guide sleeve 61 is fixedly connected to the lower die base 11, and the outer guide column 62 is fixedly connected to the upper die base 21. The outer guide sleeve 61 and the outer guide column 62 are plugged into each other. The guide assembly 6 also includes an inner guide block 63 and an inner guide column 64. The inner guide block 63 is fixedly connected to the connecting disc 14 and is provided with a guide hole. The first end of the inner guide column 64 is fixedly connected to the fixed upper die assembly 22, and the second end of the inner guide column 64 opposite to the first end of the inner guide column 64 passes through the floating upper die assembly 23 and is plugged into the guide hole.

[0077] Through the cooperation between the outer guide sleeve 61 and the outer guide column 62 as well as the inner guide block 63 and the inner guide column 64, multiple guide limits are performed on the stamping process, thereby further improving the accuracy of the stamping process and improving the stamping quality and stamping effect.

[0078] In this embodiment, the inner guide pin 64 is a stepped shaft. Its larger diameter end abuts the surface of the first intermediate plate 222 of the fixed upper die assembly 22 that faces the first connecting plate 221, while its smaller diameter end extends through the first intermediate plate 222, the second connecting plate 231, and the second intermediate plate 232 and out of the floating upper die assembly 23. Thus, the inner guide pin 64 also serves as a limiting guide for the floating movement between the fixed upper die assembly 22 and the floating upper die assembly 23. To ensure this limiting guide effect, the number of outer guide sleeves 61 and outer guide pins 62, as well as the number of inner guide blocks 63 and inner guide pins 64, can be adjusted accordingly. In this embodiment, four groups of outer guide sleeves 61 and outer guide pins 62 are provided, arranged in pairs, with the four groups evenly spaced at 90°. Four groups of inner guide blocks 63 and inner guide pins 64 are provided, arranged in pairs, with the four groups evenly spaced at 90°.

[0079] In this embodiment, a plurality of probe connecting plates 7 for installing sensor probes are also provided in the multi-sequence multi-position stamping die. By setting the probe connecting plates 7 at specific positions and setting sensor probes on the probe connecting plates 7, it is ensured that after rotation, it can be clearly known whether the rotation is in place.

[0080] During the actual stamping process, a product to be stamped is placed on the supporting column 32 corresponding to the punch 31 of the first stamping process, and then the fixed sleeve 34 is sleeved on the supporting column 32 to fix the product to be stamped. After that, the stamping process is performed, and the upper die base 21 is driven by the stamping cylinder to move toward the direction close to the lower die base 11. At this time, the upper die base 21 drives the fixed upper die assembly 22 and the floating upper die assembly 23 to move together, and gradually makes the outer guide sleeve 61 and the outer guide column 62 plugged in while moving, and the inner guide block 63 and the inner guide column 64 plugged in, and the fixed sleeve 34 is plugged in the guide groove of the stamping guide sleeve 36. When the floating upper die assembly 23 is no longer moving, the upper die base 21 drives the fixed upper die assembly 22 to continue to move toward the direction close to the lower die base 11 and compresses the upper die elastic member 2 4, so that the punch 31 slides in the stamping guide sleeve 36 and gradually approaches the product to be stamped, and stamping is carried out until the mold is closed. At this time, the upper limit column 44 abuts the lower limit column 45, and the stamping process is completed; after that, the stamping cylinder drives the upper die base 21 to move in the direction away from the lower die base 11, and the upper die base 21 drives the fixed upper die assembly 22 to gradually move upward. At this time, the outer guide sleeve 61 and the outer guide column 62 gradually disengage, and the inner guide block 63 and the inner guide column 64 gradually disengage, and the punch 31 gradually moves upward under the drive of the fixed upper die assembly 22. At this time, the floating upper die assembly 23 does not move until the upper die elastic part 24 begins to be stretched. The floating upper die assembly 23 gradually moves upward under the drive of the upper die elastic part 24, so that the fixed sleeve 34 is disengaged from the guide groove of the stamping guide sleeve 36, and finally the mold opening procedure is completed.

[0081] Then pull the anti-rotation handle 51 so that the anti-rotation handle 51 disengages from the anti-rotation groove 143 of the connecting disc 14. Then, by rotating the connecting disc 14, the product that has completed the first step of the stamping process is rotated to the bottom of the punch 31 that performs the second step of the stamping process. After it is rotated into place, release the anti-rotation handle 51 so that the anti-rotation handle 51 is re-inserted into the anti-rotation groove 143 on the connecting disc 14 to complete the fixation of the connecting disc 14.

[0082] Then, the product to be stamped is placed on the supporting column 32 which is located below the punch 31 which is performing the first step of stamping, and the stamping procedure is continued. At this time, the product which has completed the first step of stamping and the product which has completed the second step of stamping can be obtained at the same time. Then, the rotation is continued to rotate the product which has completed the second step of stamping to below the punch 31 which is performing the third step of stamping, and the product which has completed the first step of stamping is rotated to below the punch 31 which is performing the second step of stamping, and the product to be stamped is placed under the punch 31 which is performing the first step of stamping, and then stamping is performed. At this time, the product which has completed the first step of stamping, the product which has completed the second step of stamping and the product which has completed the third step of stamping can be obtained at the same time. Then, the rotation is continued to rotate the product which has completed the third step of stamping Rotate to the bottom of the punch 31 that performs the fourth step of the stamping process, rotate the product that has completed the second step of the stamping process to the bottom of the punch 31 that performs the third step of the stamping process, rotate the product that has completed the first step of the stamping process to the bottom of the punch 31 that performs the second step of the stamping process, and place the product to be stamped under the punch 31 that performs the first step of the stamping process, and then perform stamping. At this time, the product that has completed the first step of stamping, the product that has completed the second step of stamping, the product that has completed the third step of stamping and the product that has completed the fourth step of stamping can be obtained at the same time, and then the product that has completed the fourth step of stamping is removed, and a new product to be stamped is replaced on the supporting column 32, and the cycle is repeated in sequence, so that multiple processes of stamping can be performed on multiple products at the same time, which greatly improves the stamping production efficiency.

Claims

1. A multi-sequence multi-position stamping die, comprising: A lower die assembly (1), the lower die assembly (1) comprising a lower die base (11), a rotating disk (12) and a plurality of rolling assemblies (13), the plurality of rolling assemblies (13) being sandwiched between the rotating disk (12) and the lower die base (11), the rolling assembly (13) being provided with a ball (133) capable of floating up and down, and the ball (133) being freely rotatable, so that the rotating disk (12) is rotatably arranged on the lower die base (11); An upper die assembly (2), the upper die assembly (2) comprising an upper die base (21), a fixed upper die assembly (22), a floating upper die assembly (23) and an upper die elastic member (24), the fixed upper die assembly (22) being fixedly connected to the upper die base (21), the upper die elastic member (24) having a first end connected to the upper die base (21) and a second end passing through the fixed upper die assembly (22) and connected to the floating upper die assembly (23); A stamping assembly (3), wherein the stamping assembly (3) comprises a plurality of punches (31) capable of executing different stamping processes and supporting columns (32) corresponding one to one with the plurality of punches (31), wherein a first end of the punch (31) is connected to the fixed upper die assembly (22), and a second end is slidably disposed in the floating upper die assembly (23), wherein the plurality of supporting columns (32) are fixedly disposed on the turntable (12), and wherein the supporting columns (32) are configured to support products to be stamped.

2. The multi-sequence and multi-position stamping die according to claim 1, wherein, The rolling assembly (13) further comprises a rolling mounting seat (131) and a rolling elastic member (132); a mounting chamber and a first through hole communicating with the mounting chamber are provided in the rolling mounting seat (131); the ball (133) is rotatably arranged in the mounting chamber; a first end of the rolling elastic member (132) abuts against the ball (133); and a second end abuts against an inner wall of the mounting chamber facing away from the first through hole; the rolling elastic member (132) is configured so that a portion of the ball (133) has a movement tendency to always extend out of the first through hole.

3. The multi-sequence and multi-position stamping die according to claim 1, wherein, The lower die assembly (1) further comprises a connecting disc (14), wherein the connecting disc (14) is fixedly mounted on a side of the turntable (12) away from the lower die seat (11), wherein the supporting column (32) passes through the connecting disc (14) and is connected to the turntable (12), wherein the connecting disc (14) is provided with a first mounting groove (141) corresponding one-to-one to the plurality of supporting columns (32), and the stamping assembly (3) further comprises a column mounting seat (33), wherein the supporting column (32) is inserted into the column mounting seat (33), wherein the column mounting seat (33) is inserted into the first mounting groove (141) and is connected to the turntable (12).

4. The multi - sequence and multi - position stamping die according to claim 3 further includes a limit component (4). The limit component (4) includes a central limit post (41) and an outer peripheral limit seat (42). The central limit post (41) is disposed at the center of the turntable (12) and the connecting disc (14), passes through the turntable (12) and the connecting disc (14) and is connected to the lower die base (11). The outer peripheral limit seat (42) is fixedly disposed on the side of the turntable (12) and the connecting disc (14) away from the center, and is connected to the lower die base (11). A limit arc surface (421) is provided on the side of the outer peripheral limit seat (42) facing the turntable (12) and the connecting disc (14), and the limit arc surface (421) abuts against the circumferential surfaces of the turntable (12) and the connecting disc (14).

5. The multi-sequence multi-position stamping die according to claim 4, wherein, The limit component (4) further includes a rotation limit plate (43). The rotation limit plate (43) is connected to the side of the outer peripheral limit seat (42) away from the lower die base (11), and the surface of the rotation limit plate (43) facing the lower die base (11) abuts against the surface of the connecting disc (14) away from the turntable (12). The central limit post (41) is stepped and includes a large - diameter end and a small - diameter end connected to the large - diameter end. The surface of the large - diameter end facing the small - diameter end abuts against the surface of the connecting disc (14) away from the turntable (12), and the small - diameter end passes through the connecting disc (14) and the turntable (12) and is connected to the lower die base (11).

6. The multi-order multi-position stamping die according to claim 5, wherein, The limit component (4) further includes an upper limit post (44) and a lower limit post (45). The upper limit post (44) is connected to the upper die base (21), and the lower limit post (45) is connected to the lower die base (11). After the upper die assembly (2) and the lower die assembly (1) are closed in place, the upper limit post (44) and the lower limit post (45) abut against each other.

7. The multi-sequence multi-position stamping die according to claim 4, wherein, A plurality of anti - rotation notch openings (143) are formed in the side wall of the connecting disc (14). The multi - sequence and multi - position stamping die further includes an anti - rotation component (5). The anti - rotation component (5) includes an anti - rotation handle (51) and an anti - rotation elastic member (52). The anti - rotation handle (51) passes through the outer peripheral limit seat (42) and is inserted into the anti - rotation notch opening (143), and the anti - rotation elastic member (52) is configured to make the anti - rotation handle (51) have a movement tendency of always inserting into the anti - rotation notch opening (143).

8. The multi-order and multi-position stamping die according to claim 1, wherein, The stamping component (3) further includes a stamping connection seat (35) and a stamping guide sleeve (36) corresponding to the plurality of punches (31) one by one. The stamping connection seat (35) is embedded in the fixed upper die assembly (22), the stamping guide sleeve (36) is embedded in the floating upper die assembly (23), the first end of the punch (31) is connected to the stamping connection seat (35), and the second end is slidably inserted through the stamping guide sleeve (36).

9. The multi-order multi-position stamping die according to claim 8, wherein, The stamping assembly (3) further includes a fixed sleeve (34) sleeved on the bearing column (32). The fixed sleeve (34) and the bearing column (32) are configured to clamp the product to be stamped between the fixed sleeve (34) and the bearing column (32). An avoidance hole for avoiding the stamping area of the product to be stamped is formed in the fixed sleeve (34). A guiding groove for plugging and cooperating with the fixed sleeve (34) is formed on one side of the stamping guide sleeve (36) facing the bearing column (32).

10. The multi-step and multi-position stamping die according to claim 3 further includes a guiding assembly (6). The guiding assembly (6) includes an outer guiding sleeve (61), an outer guiding column (62), an inner guiding block (63), and an inner guiding column (64). The outer guiding sleeve (61) is fixedly connected to the lower die base (11), and the outer guiding column (62) is fixedly connected to the upper die base (21). The outer guiding sleeve (61) and the outer guiding column (62) are plugged together. The inner guiding block (63) is fixedly connected to the connecting disc (14) and is provided with a guiding hole. The first end of the inner guiding column (64) is fixedly connected to the fixed upper die assembly (22), and the second end passes through the floating upper die assembly (23) and is plugged into the guiding hole.

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