Stamping die for plate processing
By designing a progressive segmented stamping die and utilizing a timing difference upper punch and an elastic buffer structure, the problem of excessive stretching caused by uneven material flow is solved, significantly improving the stamping quality and yield.
Patent Information
- Application Number
- CN202522817960.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-31
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-12-31
AI Technical Summary
In the process of forming large-area or complex parts using traditional stamping dies, uneven material flow leads to excessive stretching in the area with the greatest deformation, causing the material to thin or crack, which affects product quality and production yield.
An elastic buffer structure consisting of an upper punch with a timing difference, a lower die float, a first spring, and a nitrogen spring is adopted to achieve progressive segmented stamping. The stress concentration of the sheet metal is dispersed through the step-by-step forming process of the upper punch, thus avoiding excessive stretching.
It effectively controls sheet metal deformation and flow, prevents cracking, and improves stamping quality and yield.
Smart Images
Figure CN223875928U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to stamping die technical field, especially relate to a stamping die for plate processing. BACKGROUND
[0002] In the stamping process of metal plate, especially when forming parts with large area or complex structure, a one-time stamping die is usually used.
[0003] The upper die part of the traditional stamping die is usually a whole synchronous downward, and the stamping action is completed by cooperating with the lower die. Although this synchronous stamping method is efficient, for some parts that need large deformation, the material flow of each part of the plate is not uniform during the forming process, which is easy to produce excessive extension in the area with the largest deformation, resulting in material thinning or even rupture, which seriously affects the product quality and production yield. To solve the above problems, we provide a stamping die for plate processing. UTILITY MODEL CONTENTS
[0004] The utility model discloses a stamping die for plate processing, which solves the problem of uneven material flow of each part of the plate during the stamping process of the traditional stamping die, which is easy to produce excessive extension in the area with the largest deformation, resulting in material thinning or even rupture, which seriously affects the product quality and production yield.
[0005] The above technical purpose of the utility model is realized by the following technical scheme: a stamping die for plate processing, comprising a lower die seat, the top of the lower die seat is bolted with a lower base plate, the top of the lower base plate is bolted with a lower die plate A and a lower die plate B, the top of the lower base plate is provided with a plurality of lower die floating blocks and lower die fixed blocks, a first spring is arranged between the lower base plate and the lower die floating block, a lower die punch is arranged between the lower die floating block and the lower die fixed block, the two ends of the lower die floating block and the lower die fixed block are integrally processed with a protrusion A, the two ends of the lower die punch are integrally processed with a protrusion B, the top of the lower die seat is provided with an upper supporting plate, the bottom of the upper supporting plate is bolted with a nitrogen gas spring, the bottom of the upper supporting plate is bolted with an upper die seat, the bottom of the upper die seat is bolted with an upper back plate A and an upper back plate B, the bottom of the upper back plate A and the upper back plate B is bolted with an upper base plate, the inside of the upper die seat and the upper base plate is provided with a through hole matched with the nitrogen gas spring, the bottom of the upper base plate is bolted with an upper clamping plate A and an upper clamping plate B, the bottom of the upper base plate is provided with a plurality of upper punches A and upper punches B, an upper stripper plate is arranged between the upper punches A and the upper punches B, the two ends of the upper punches A and the upper punches B are integrally processed with a protrusion C, the two ends of the upper stripper plate are integrally processed with a protrusion D, the top of the upper punch A is provided with a push plate, the inside of the push plate is sleeved with a first bolt and a second bolt, the bottom of the first bolt is threadedly connected with the upper punch A, and the bottom of the second bolt is threadedly connected with the upper stripper plate.
[0006] Preferably, the top of the lower die plate B is provided with a first pressing groove, a pressing block is arranged in the first pressing groove, a third bolt is sleeved in the pressing block, the bottom of the third bolt is screwed with the lower die plate B, the top of the lower die plate B is provided with a second pressing groove, a fourth bolt is screwed in the second pressing groove, and the top of the lower die plate B is provided with a third pressing groove, and a fifth bolt is screwed in the third pressing groove.
[0007] Preferably, the inside of the upper clamping plate B is provided with a mounting groove matched with the upper punch A and the upper punch B, the mounting groove is arranged with a punch hook A, the inside of the punch hook A is sleeved with a sixth bolt, the top of the sixth bolt is screwed with the upper backing plate, both ends of the upper clamping plate are provided with a punch hook B, the inside of the punch hook B is sleeved with a seventh bolt, and the top of the seventh bolt is screwed with the upper backing plate.
[0008] Preferably, the both sides of the top of the lower backing plate are bolted with a flat key block A, the bottom of the lower die plate A is provided with a flat key groove A matched with the flat key block A, the connecting part of the lower die plate A and the lower die plate B is sleeved with a I-shaped buckle A, the bottom of the I-shaped buckle A is bolted with the lower backing plate, the connecting part of the lower die plate A and the lower die plate B is provided with a buckle hole A matched with the I-shaped buckle A, and the top of the lower backing plate and the bottom of the lower die floating block are both provided with a mounting hole matched with the first spring.
[0009] Preferably, the top of the upper clamping plate A is bolted with a flat key block B, the bottom of the upper backing plate is provided with a flat key groove B matched with the flat key block B, the connecting part of the upper clamping plate A and the upper clamping plate B is sleeved with a I-shaped buckle B, the top of the I-shaped buckle B is bolted with the upper backing plate, and the connecting part of the upper clamping plate A and the upper clamping plate B is provided with a buckle hole B matched with the I-shaped buckle B.
[0010] Preferably, the both sides of the bottom of the upper die seat are fixedly sleeved with outer guide columns, the inside of the lower die seat is fixedly sleeved with outer guide sleeves matched with the outer guide columns, the inside of the upper clamping plate A is fixedly sleeved with inner guide columns, and the inside of the lower die plate A is fixedly sleeved with inner guide sleeves matched with the inner guide columns.
[0011] The utility model has the following beneficial effects:
[0012] The device realizes progressive segmented stamping of the plate material by setting the upper punch A and the upper punch B with time difference, cooperating with the lower die floating block, the first spring and the nitrogen spring elastic buffering structure, in the stamping process, the upper punch A first contacts the plate material, pre-presses and preliminarily forms the middle part of the plate material by the elastic support of the lower die floating block, and the nitrogen spring is compressed, with the continuous pressing of the upper punch A, the middle part of the plate material is gradually formed, at this time, the upper punch B and the upper stripper cooperate with the lower die fixed block and the lower die punch to perform subsequent stamping forming on the two sides of the plate material, the step-by-step stamping mechanism effectively disperses the stress concentration of the plate material in the forming process, can effectively control the deformation flow of the plate material, prevent the rupture problem caused by excessive extension, and significantly improve the stamping forming quality and the yield. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 is a three-dimensional view of the structure of the utility model;
[0014] Figure 2 is a three-dimensional view of the structure of the utility model;
[0015] Figure 3 is a three-dimensional view of the structure of the utility model;
[0016] Figure 4 is a three-dimensional view of the structure of the utility model;
[0017] Figure 5 is an exploded view of the partial structure of the utility model;
[0018] Figure 6 is an exploded view of the partial structure of the utility model;
[0019] Figure 7 is an exploded view of the partial structure of the utility model;
[0020] Figure 8 is a three-dimensional view of the partial structure of the utility model;
[0021] Figure 9 is an exploded view of the partial structure of the utility model;
[0022] Figure 10 is an exploded view of the partial structure of the utility model;
[0023] Figure 11 is an exploded view of the partial structure of the utility model;
[0024] Figure 12 is an exploded view of the partial structure of the utility model;
[0025] Figure 13 is an exploded view of the partial structure of the utility model;
[0026] Figure 14It is partial structure perspective view of the utility model.
[0027] Reference signs: 1, lower die holder; 2, lower backing plate; 3, lower die plate A; 4, lower die plate B; 5, lower die floating block; 6, first spring; 7, lower die fixing block; 8, lower die punch; 9, upper backing plate; 10, nitrogen gas spring; 11, protrusion C; 12, upper die holder; 13, upper back plate A; 14, upper back plate B; 15, upper backing plate; 16, through hole; 17, upper clamping plate A; 18, upper clamping plate B; 19, upper punch A; 20, upper punch B; 21, upper stripper plate; 22, push plate; 23, first bolt; 24, second bolt; 25, first pressing groove; 26, pressing block; 27, third bolt; 28, second pressing groove; 29, fourth bolt; 30, third pressing groove; 31, fifth bolt; 32, mounting groove; 33, punch hook A; 34, sixth bolt; 35, punch hook B; 36, seventh bolt; 37, flat key block A; 38, flat key groove A; 39, I-shaped buckle A; 40, buckle hole A; 41, mounting hole; 42, protrusion A; 43, protrusion B; 44, flat key block B; 45, flat key groove B; 46, I-shaped buckle B; 47, buckle hole B; 48, protrusion D; 49, outer guide column; 50, outer guide sleeve; 51, inner guide column; 52, inner guide sleeve. DETAILED DESCRIPTION
[0028] The utility model will be further explained in detail below in combination with the drawings.
[0029] Example 1:
[0030] Reference Figures 1-14The utility model provides a stamping die for plate processing, including lower die seat 1, the top of lower die seat 1 is bolted with lower bolster plate 2, the top of lower bolster plate 2 is bolted with lower die plate A 3 and lower die plate B 4, the top of lower bolster plate 2 is provided with a plurality of lower die floating block 5 and lower die fixed block 7, be provided with first spring 6 between lower bolster plate 2 and lower die floating block 5, be provided with lower die punch 8 between lower die floating block 5 and lower die fixed block 7, both ends of lower die floating block 5 and lower die fixed block 7 are integrally processed with lug A 42, both ends of lower die punch 8 are integrally processed with lug B 43, the top of lower die seat 1 is provided with upper backboard 9, the bottom of upper backboard 9 is bolted with nitrogen gas spring 10, the bottom of upper backboard 9 is bolted with upper die seat 12, the bottom of upper die seat 12 is bolted with upper backboard A 13 and upper backboard B 14, the bottom of upper backboard A 13 and upper backboard B 14 is bolted with upper bolster plate 15, the inside of upper die seat 12 and upper bolster plate 15 is provided with the through -hole 16 of being adapted to nitrogen gas spring 10, the bottom of upper bolster plate 15 is bolted with upper clamping plate A 17 and upper clamping plate B 18, the bottom of upper bolster plate 15 is provided with a plurality of upper punch A 19 and upper punch B 20, be provided with upper stripper plate 21 between upper punch A 19 and upper punch B 20, both ends of upper punch A 19 and upper punch B 20 are integrally processed with lug C 11, both ends of upper stripper plate 21 are integrally processed with lug D 48, the top of upper punch A 19 is provided with push plate 22, the inside of push plate 22 is sleeved with first bolt 23 and second bolt 24, the bottom of first bolt 23 is screwed with upper punch A 19, the bottom of second bolt 24 is screwed with upper stripper plate 21.
[0031] Specifically, the device sets the upper punch A 19 and the upper punch B 20 with a time sequence difference, cooperates with the elastic buffer structure such as the lower die floating block 5, the first spring 6 and the nitrogen gas spring 10, realizes the progressive segmented stamping of the plate, and in the stamping process, the upper punch A 19 first contacts the plate, pre-presses and preliminarily forms the middle part of the plate by means of the elastic support of the lower die floating block 5, and reserves energy by compressing the nitrogen gas spring 10, with the continuous pressing of the upper punch A 19, the middle part of the plate is gradually formed, at this time, the upper punch B 20 and the upper stripper plate 21 cooperate with the lower die fixed block 7 and the lower die punch 8 to perform subsequent stamping forming on both sides of the plate, and this step-by-step stamping mechanism effectively disperses the stress concentration of the plate in the forming process, can effectively control the deformation flow of the plate and prevent the rupture problem caused by excessive extension, and significantly improves the stamping forming quality and yield.
[0032] Reference Figure 5 、 Figure 6 and Figure 7The top of the lower die plate B4 is provided with a first pressing groove 25, a pressing block 26 is arranged in the first pressing groove 25, the pressing block 26 is sleeved with a third bolt 27, the bottom of the third bolt 27 is screwed with the lower die plate B4, the movement stroke of the lower die floating block 5 is limited by the protrusion A42, the third bolt 27 and the pressing block 26 are arranged, and the lower die floating block 5 is convenient to disassemble and maintain, the top of the lower die plate B4 is provided with a second pressing groove 28, the fourth bolt 29 is screwed in the second pressing groove 28, the fourth bolt 29 can cooperate with the protrusion A42 to press and fix the lower die fixed block 7, and the lower die fixed block 7 is convenient to disassemble and maintain, the top of the lower die plate B4 is provided with a third pressing groove 30, the fifth bolt 31 is screwed in the third pressing groove 30, the fifth bolt 31 can cooperate with the protrusion B43 to press and fix the lower die punch 8, and the lower die punch 8 is convenient to disassemble and maintain.
[0033] Reference Figure 12 The inside of the upper clamping plate B18 is provided with a mounting groove 32 matched with the upper punch A19 and the upper punch B20, the mounting groove 32 is arranged with a punch hook A33, the inside of the punch hook A33 is sleeved with a sixth bolt 34, the punch hook A33 is arranged, the upper punch B20 can be pressed and fixed, and the downward stroke of the upper punch A19 can be limited, the top of the sixth bolt 34 is screwed with the upper backing plate 15, the upper stripper plate 21 is provided with a punch hook B35 at both ends, the inside of the punch hook B35 is sleeved with a seventh bolt 36, the top of the seventh bolt 36 is screwed with the upper backing plate 15, and the punch hook B35 can limit and facilitate disassembly and maintenance of the upper stripper plate 21.
[0034] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 The two sides of the top of the lower backing plate 2 are bolted with a flat key block A37, the bottom of the lower die plate A3 is provided with a flat key groove A38 matched with the flat key block A37, the flat key groove A38 and the flat key block A37 are arranged, the lower backing plate 2 and the lower die plate A3 can be butt-jointed and fixed, the connection between the lower die plate A3 and the lower die plate B4 is sleeved with a I-shaped buckle A39, the bottom of the I-shaped buckle A39 is bolted with the lower backing plate 2, the connection between the lower die plate A3 and the lower die plate B4 is provided with a buckle hole A40 matched with the I-shaped buckle A39, the I-shaped buckle A39 is arranged, and the connection between the lower die plate A3 and the lower die plate B4 can be reinforced, the top of the lower backing plate 2 and the bottom of the lower die floating block 5 are provided with mounting holes 41 matched with the first spring 6, and the first spring 6 can be installed.
[0035] Reference Figure 11 , Figure 12 and Figure 14The top of the upper clamping plate A17 is bolted with a flat key block B44, and the bottom of the upper backing plate 15 is provided with a flat key groove B45 matched with the flat key block B44. By arranging the flat key block B44 and the flat key groove B45, the upper clamping plate A17 can be butt-jointed and fixed with the upper backing plate 15. The connection part of the upper clamping plate A17 and the upper clamping plate B18 is sleeved with a clevis B46, the top of the clevis B46 is bolted with the upper backing plate 15, and the connection part of the upper clamping plate A17 and the upper clamping plate B18 is provided with a buckle hole B47 matched with the clevis B46. By arranging the clevis B46, the connection part of the upper clamping plate A17 and the upper clamping plate B18 can be reinforced.
[0036] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The two sides of the bottom of the upper die seat 12 are fixedly sleeved with outer guide columns 49, the inside of the lower die seat 1 is fixedly sleeved with outer guide sleeves 50 matched with the outer guide columns 49, the inside of the upper clamping plate A17 is fixedly sleeved with inner guide columns 51, and the inside of the lower die plate A3 is fixedly sleeved with inner guide sleeves 52 matched with the inner guide columns 51. By arranging the double guide structure combined by the outer guide columns 49 and the outer guide sleeves 50 and the inner guide columns 51 and the inner guide sleeves 52, the centering accuracy and the running stability in the stamping process are effectively ensured, and the consistency of the stamping forming and the product quality are significantly improved.
[0037] Brief description of the use process: the user can place the plate on the top of the two lower die plates A3, the stamping equipment drives the upper punch A19, the upper stripper plate 21 and the upper punch B20 to move downward, so that the upper punch A19 and the upper stripper plate 21 pre-press the plate through the cooperation of the lower die floating block 5 and the lower die punch 8, the upper punch A19 continuously presses downward, the lower die floating block 5 drives the first spring 6 to compress, at the same time, the upper punch A19 and the upper stripper plate 21 compress the nitrogen gas spring 10 through the push plate 22, and the middle part of the plate can be pre-stamped, then the upper punch B20 and the upper stripper plate 21 stamp the two sides of the plate through the cooperation of the lower die fixed block 7 and the lower die punch 8, so that the middle part of the plate can be prevented from being excessively damaged due to overstretching.
[0038] This specific embodiment is only an explanation of the utility model, and is not a limitation of the utility model. Those skilled in the art can make modifications to the embodiment without creative contribution after reading the specification, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.
Claims
1. A stamping die for sheet metal working comprising a lower die seat (1), characterized in that: The top of the lower die seat (1) is bolted with a lower base plate (2), the top of the lower base plate (2) is bolted with a lower die plate A (3) and a lower die plate B (4), the top of the lower base plate (2) is provided with a plurality of lower die floating blocks (5) and lower die fixed blocks (7), the first spring (6) is arranged between the lower base plate (2) and the lower die floating block (5), the lower die punch (8) is arranged between the lower die floating block (5) and the lower die fixed block (7), the two ends of the lower die floating block (5) and the lower die fixed block (7) are integrally processed with a protruding block A (42), the two ends of the lower die punch (8) are integrally processed with a protruding block B (43), the top of the lower die seat (1) is provided with an upper supporting plate (9), the bottom of the upper supporting plate (9) is bolted with a nitrogen gas spring (10), the bottom of the upper supporting plate (9) is bolted with an upper die seat (12), the bottom of the upper die seat (12) is bolted with an upper back plate A (13) and an upper back plate B (14), the bottom of the upper back plate A (13) and the upper back plate B (14) is bolted with an upper base plate (15), the inside of the upper die seat (12) and the upper base plate (15) is provided with a through hole (16) matched with the nitrogen gas spring (10), the bottom of the upper base plate (15) is bolted with an upper clamping plate A (17) and an upper clamping plate B (18), the bottom of the upper base plate (15) is provided with a plurality of upper punches A (19) and upper punches B (20), the upper stripper plate (21) is arranged between the upper punch A (19) and the upper punch B (20), the two ends of the upper punch A (19) and the upper punch B (20) are integrally processed with a protruding block C (11), the two ends of the upper stripper plate (21) are integrally processed with a protruding block D (48), the top of the upper punch A (19) is provided with a push plate (22), the inside of the push plate (22) is sleeved with a first bolt (23) and a second bolt (24), the bottom of the first bolt (23) is threadedly connected with the upper punch A (19), the bottom of the second bolt (24) is threadedly connected with the upper stripper plate (21).
2. The stamping die for processing a plate material according to claim 1, characterized in that: The top of the lower die plate B (4) is provided with a first pressing groove (25), the inside of the first pressing groove (25) is placed with a pressing block (26), the inside of the pressing block (26) is sleeved with a third bolt (27), the bottom of the third bolt (27) is threadedly connected with the lower die plate B (4), the top of the lower die plate B (4) is provided with a second pressing groove (28), the inside of the second pressing groove (28) is threadedly connected with a fourth bolt (29), the top of the lower die plate B (4) is provided with a third pressing groove (30), the inside of the third pressing groove (30) is threadedly connected with a fifth bolt (31).
3. The stamping die for processing a plate material according to claim 1, characterized in that: The inside of the upper clamp plate B (18) is provided with a mounting groove (32) matched with the upper punch A (19) and the upper punch B (20), the inside of the mounting groove (32) is placed with a punch hook A (33), the inside of the punch hook A (33) is sleeved with a sixth bolt (34), the top of the sixth bolt (34) is threadedly connected with the upper backing plate (15), both ends of the upper stripper plate (21) are provided with a punch hook B (35), the inside of the punch hook B (35) is sleeved with a seventh bolt (36), the top of the seventh bolt (36) is threadedly connected with the upper backing plate (15).
4. The stamping die for processing a plate material according to claim 1, characterized in that: Both sides of the top of the lower backing plate (2) are bolted with a flat key block A (37), the bottom of the lower die plate A (3) is provided with a flat key groove A (38) matched with the flat key block A (37), the connection between the lower die plate A (3) and the lower die plate B (4) is sleeved with a I-shaped buckle A (39), the bottom of the I-shaped buckle A (39) is bolted with the lower backing plate (2), the connection between the lower die plate A (3) and the lower die plate B (4) is provided with a buckle hole A (40) matched with the I-shaped buckle A (39), the top of the lower backing plate (2) and the bottom of the lower die floating block (5) are provided with a mounting hole (41) matched with the first spring (6).
5. The stamping die for processing a plate material according to claim 1, characterized in that: The top of the upper clamp plate A (17) is bolted with a flat key block B (44), the bottom of the upper backing plate (15) is provided with a flat key groove B (45) matched with the flat key block B (44), the connection between the upper clamp plate A (17) and the upper clamp plate B (18) is sleeved with a I-shaped buckle B (46), the top of the I-shaped buckle B (46) is bolted with the upper backing plate (15), the connection between the upper clamp plate A (17) and the upper clamp plate B (18) is provided with a buckle hole B (47) matched with the I-shaped buckle B (46).
6. The stamping die for processing a plate material according to claim 1, characterized in that: Both sides of the bottom of the upper die seat (12) are fixedly sleeved with an outer guide column (49), the inside of the lower die seat (1) is fixedly sleeved with an outer guide sleeve (50) matched with the outer guide column (49), the inside of the upper clamp plate A (17) is fixedly sleeved with an inner guide column (51), the inside of the lower die plate A (3) is fixedly sleeved with an inner guide sleeve (52) matched with the inner guide column (51).