CN215467468U - Die for preventing plane deformation after stamping - Google Patents

Die for preventing plane deformation after stamping Download PDF

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Publication number
CN215467468U
CN215467468U CN202122086996.0U CN202122086996U CN215467468U CN 215467468 U CN215467468 U CN 215467468U CN 202122086996 U CN202122086996 U CN 202122086996U CN 215467468 U CN215467468 U CN 215467468U
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Prior art keywords
die
punching
plate
punch
block
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CN202122086996.0U
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Chinese (zh)
Inventor
张实丹
马骏
陈志鹏
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Wuxi Weitongli Electrical Co ltd
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Wuxi Weitongli Electrical Co ltd
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Abstract

The utility model relates to a die for preventing plane deformation after stamping, which comprises an upper die and a lower die, wherein a pre-stamping punch and a forming punch are arranged on the upper die at intervals, and a die cavity corresponding to the punch is arranged in the lower die; the diameter of the pre-punching punch is smaller than the aperture of the product after being formed, and the diameter of the forming punch is equal to the aperture of the product after being formed; the pre-punching punch is used for punching a product in a forward direction, and the forming punch is used for punching a product subjected to forward punching in a reverse direction. The utility model designs two types of punches, correspondingly manufactures two die cavities, and the two types of punches respectively punch the product in the positive and negative directions, thereby effectively solving the problem of plane deformation and improving the flatness.

Description

Die for preventing plane deformation after stamping
Technical Field
The utility model relates to the technical field of stamping modules, in particular to a die for preventing a stamped plane from deforming.
Background
The size of the copper bar product punched by the stamping die is as follows: the thickness is 10mm, the width is 21mm, the length is 36mm, the planeness after processing is required to be 0.02, and the aperture is 9 mm. There is the copper bar perk behind the punching press to be curved phenomenon in the punching press process, leads to the hole edge of punching press back structure to be 4.5mm apart from product outer end edge, can't satisfy the punching press and require the hole to the thick requirement of the distance more than or equal to board on limit, consequently adopts drilling processing at present, and is inefficient, with high costs.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a die for preventing the plane from deforming after stamping, so as to solve the problem of plane deformation of a stamping hole.
The technical scheme adopted by the utility model is as follows:
a die for preventing plane deformation after stamping comprises an upper die and a lower die, wherein a pre-stamping punch and a forming punch are arranged on the upper die at intervals, and a die cavity corresponding to the punch is arranged in the lower die;
the pre-punching punch is used for punching a product in a forward direction, and the diameter of the pre-punching punch is smaller than the aperture of the product after forming;
the forming punch is used for reversely punching the product subjected to forward punching, and the diameter of the forming punch is equal to the aperture of the product subjected to forming.
The further technical scheme is as follows:
the lower die structurally comprises a lower die plate, the die cavity is arranged in the lower die plate, a middle positioning block, a fixing block and three sliding blocks are further arranged on the lower die plate, the position of the middle positioning block corresponds to the position between the pre-punching punch and the forming punch, and the positions of the fixing block and the three sliding blocks correspond to the peripheries of the two punches;
the middle positioning block and the fixing block are fixedly arranged on the lower template, the three sliding blocks are respectively connected to the lower template in a sliding mode, and the upper die is provided with a movable wedge which is correspondingly matched with the three sliding blocks.
The structure of lower mould still includes horizontal spring part, the die cavity outside with horizontal spring part one end is connected, the horizontal spring part other end be used for with the slider butt, be equipped with in the slider with the cavity that horizontal spring part matches.
The sliding block and the movable inclined wedge are provided with mutually matched inclined planes.
The lower template is also provided with a plurality of groups of pressing blocks, the pressing blocks correspond to the sliding blocks, each group of pressing blocks comprises two pressing blocks which are symmetrically arranged, the inner side surfaces of the pressing blocks are provided with grooves, and the outer side surfaces of the sliding blocks are provided with bosses which are in sliding fit with the grooves.
The upper die structurally comprises an upper base plate I, wherein the bottom surface of the upper base plate I is connected with an upper clamping plate, an upper stripper plate is arranged below the upper base plate I, the upper base plate I is connected with the upper stripper plate through a discharging bolt, the upper ends of two punches are fixedly connected with the upper clamping plate, the lower ends of the two punches penetrate through the upper stripper plate, and the top surface of the upper base plate I is connected with an upper die base through an upper base plate II; one end of the movable inclined wedge is movably connected with a connecting pin fixed on the second upper base plate through a vertical spring piece.
The upper die holder is connected with the upper supporting plate through an upper cushion block, and a rubber block and a rubber cushion block are arranged in a gap formed between the upper die holder and the upper supporting plate; and a gap formed between the rubber cushion block and the upper stripping plate is used for arranging a mandril.
The bottom surface of the lower template is connected with the lower die base through a lower backing plate.
The number of the pre-punching punch heads and the number of the forming punch heads respectively correspond to the number of the to-be-punched holes on the product.
The utility model has the following beneficial effects:
the utility model designs two types of punches, correspondingly manufactures two die cavities, and the two types of punches respectively punch the product in the positive and negative directions, thereby effectively solving the problem of plane deformation and improving the flatness.
The utility model uses the sliding block spring to limit the two ends around the product, because the width of the product is the size of the supplied material, the internal processing is not needed, and the size of the supplied material can not be kept consistent, the utility model adopts the mode that the movable inclined wedge spring presses down and the side edge of the sliding block props against the product to limit the product. The production efficiency is improved, and the product quality is ensured.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a top view of a lower die according to an embodiment of the present invention.
In the figure: 1. an upper supporting plate; 2. an upper cushion block; 3. a rubber block; 4. a rubber cushion block; 5. a top rod; 6. a discharge bolt; 7. an upper die holder; 8. an upper backing plate II; 9. a first upper base plate; 10. an upper splint; 11. a connecting pin; 12. a lower template; 13. a lower base plate; 14. a lower die holder; 15. a vertical spring member; 16. a slider; 17. a horizontal spring member; 18. pre-punching a punch; 19. a middle positioning block; 20. forming a punch; 21. an upper stripping plate; 22. a movable inclined wedge; 23. a fixed block; 24. a product to be processed; 25. a mold cavity; 26. briquetting; 161. and (4) a boss.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
The die for preventing the plane deformation after stamping of the embodiment comprises an upper die and a lower die, as shown in fig. 1, a pre-stamping punch 18 and a forming punch 20 are arranged on the upper die at intervals, and a die cavity 25 corresponding to the punches is arranged on the lower die;
the pre-punching punch 18 is used for punching a product in a forward direction, the diameter of the pre-punching punch 18 is smaller than the aperture of the product after being formed, the forming punch 20 is used for punching the product after being punched in the forward direction in a reverse direction, and the diameter of the forming punch 20 is equal to the aperture of the product after being formed.
In the above embodiment, as shown in fig. 1 and fig. 2, the lower mold structure includes a lower mold plate 12, the lower mold plate 12 is provided with a middle positioning block 19, a fixing block 23 and three sliders 16, the middle positioning block 19 is located between the pre-punching punch 18 and the forming punch 20, and the fixing block 23 and the three sliders 16 are located around the two punches;
the middle positioning block 19 and the fixing block 23 are fixedly arranged on the lower template 12, the three sliders 16 are respectively connected to the lower template 12 in a sliding manner, and the upper die is provided with movable wedges 22 correspondingly matched with the three sliders 16.
Specifically, as shown in fig. 2, the die cavity 25 is disposed on the lower die plate 12, and the intermediate positioning block 19 is located between two die cavities 25 corresponding to the pre-punch 18 and the forming punch 20, respectively; one fixed block 23 and three sliding blocks 16 correspond to the peripheries of the two mold cavities 25, and are illustrated in detail in the perspective view of fig. 2:
the two sliders 16 are oppositely arranged and respectively located at the left side and the right side of the two die cavities 25, the other slider 16 is butted at the front sides of the two die cavities 25, and the fixed block 23 is butted at the rear sides of the two die cavities 25. The left and right sliders 16 move towards the right and left respectively to transversely position the product 24 to be processed which is subjected to pre-punching and forming punching in sequence, so that the product 24 to be processed is tightly pressed on the middle positioning block 19; the fixed block 23 and the slide 16 arranged opposite thereto are used for longitudinally positioning the product 24 to be processed in a back-and-forth stamping process, i.e. the slide 16 on the front side moves backwards to press the product 24 to be processed against the fixed block 23 on the back side.
As a specific implementation form, the structure of the lower die further includes a horizontal spring member 17, the outer side of the die cavity 25 is connected with one end of the horizontal spring member 17, the other end of the horizontal spring member 17 is used for abutting against the sliding block 16, as shown in fig. 1, a cavity matched with the horizontal spring member 17 is arranged in the sliding block 16.
When the product 24 to be processed is placed on the mold cavity 25 and the slide block 16 moves towards the mold cavity 25, one end of the horizontal spring element 17 extends into the cavity of the slide block 16 and is compressed, so that the slide block 16 pushes the product 24 to be processed to abut against the middle positioning block 19. During discharging, the slide block 16 is pushed away under the resilience of the horizontal spring element 17, and the product 24 to be processed is released.
In one embodiment, the slider 16 and the movable wedge 22 have cooperating ramps.
The movable inclined wedge 22 is matched with the sliding block 16 through an inclined surface to convert vertical motion into horizontal motion, and during feeding, the movable inclined wedge 22 moves downwards to drive the sliding block 16 to move towards the direction of the central positioning block 19. During discharging, the movable wedges 22 move upwards, and the sliding block 16 is pushed back under the resilience of the horizontal spring element 17.
It should be noted that, for clarity of illustration, fig. 1 only shows the matching structure of the left slider and the movable wedge, and the right slider and the corresponding movable wedge structure are omitted. The complete structure can refer to fig. 2, and fig. 2 is a top view of the lower mold, and a movable inclined wedge structure is retained to show the structure of the lower mold in a state of being matched with the sliding block.
Still be equipped with multiunit briquetting 26 on the lower bolster 12, briquetting 26 and slider 16 correspond the setting, and every briquetting 26 of group is equipped with the recess including two that the symmetry set up, the medial surface of briquetting 26, and the lateral surface of slider 16 is equipped with the boss 161 with recess sliding fit.
The bottom surface of the lower template 12 is connected with a lower die base 14 through a lower backing plate 13.
As a specific implementation form, as shown in fig. 1, the upper die structurally comprises a first upper padding plate 9, the bottom surface of the first upper padding plate is connected with an upper clamping plate 10, an upper stripper plate 21 is arranged below the first upper padding plate 9, the first upper padding plate 9 is connected with the upper stripper plate 21 through a discharging bolt 6, the upper ends of two punches are fixedly connected with the upper clamping plate 10, the lower ends of the two punches penetrate through the upper stripper plate 21, and the top surface of the first upper padding plate 9 is connected with an upper die base 7 through a second upper padding plate 8; one end of the movable inclined wedge 22 is movably connected with the connecting pin 11 fixed on the second upper backing plate 8 through the vertical spring piece 15.
As a specific implementation form, an upper die base 7 is connected with an upper supporting plate 1 through an upper cushion block 2, and a rubber block 3 and a rubber cushion block 4 are arranged in a gap formed between the upper die base 7 and the upper supporting plate 1; and a push rod 5 is arranged in a gap formed between the rubber cushion block 4 and the upper stripping plate 21. The ejector rod 5 is used for discharging the product by utilizing the resilience force of the rubber block 3 during demoulding.
Wherein, the upper supporting plate 1 is fixed on the punch body.
In the above embodiment, the number of the pre-punching punches 18 and the number of the forming punches 20 respectively correspond to the number of the holes to be punched on the product.
In one embodiment, the product 24 to be processed is punched in two, so that the pre-punch 18 and the forming punch 20 are each provided in two, and the corresponding die cavities 25 are each formed in two. In a specific embodiment, the diameters of the pre-punching punch 18 and the forming punch 20 are 7mm and 9mm, respectively, and the diameter of the hole to be formed of the product 24 to be processed is 9 mm.
The working process of the embodiment is as follows:
front punch (pre-punch):
the lower die is fixedly arranged, a product 24 to be processed is firstly placed into a die cavity 25 corresponding to the pre-punching punch 18, the upper die moves downwards, the movable inclined wedge 22 moves downwards, the slide block 16 pushes the product 24 to be processed along the transverse direction to be tightly leaned on the middle positioning block 19 by means of the cooperation of the inclined surface and the slide block 16, and meanwhile, the fixed block 23 and the slide block 16 arranged opposite to the fixed block are used for positioning the product 24 to be processed from the longitudinal direction; the upper die continues to move downwards, the vertical spring piece 15 is compressed under force, so that the movable inclined wedges 22 further push the sliding block 16 tightly to press the product, meanwhile, the sliding block 16 keeps pressing with the die cavity 25 under the action of the horizontal spring piece 17, the pre-punching punch 18 punches a hole in the product 24 to be processed, the rubber block 3 is compressed and contracted, the pre-punched product is sleeved on the pre-punching punch 18, the upper die is adjusted to move upwards, the movable inclined wedges 22 move upwards, the sliding block 16 rebounds through the horizontal spring piece 17, the product 24 to be processed is sleeved on the pre-punching punch 18, and the rubber block 3 rebounds to push the upper stripper plate 21 downwards through the ejector rod 5, so that the product is dismounted from the pre-punching punch 18;
back side punching (forming punching):
and (3) turning over the product 24 to be processed, putting the product into a die cavity corresponding to the forming punch 20, repeating the actions to complete reverse punching, pressing the product deformed by the first punching back during the second punching, ensuring the flatness of the finished product, and adjusting the flatness by the forward and reverse punching. And (3) putting a new un-punched product into a die cavity corresponding to the pre-punching punch 18 for pre-punching while reversely punching, so as to realize continuous processing.

Claims (9)

1. A die for preventing plane deformation after stamping is characterized by comprising an upper die and a lower die, wherein a pre-stamping punch head (18) and a forming punch head (20) are arranged on the upper die at intervals, and a die cavity (25) corresponding to the punch head is arranged in the lower die;
the pre-punching punch (18) is used for punching a product in a forward direction, and the diameter of the pre-punching punch (18) is smaller than the aperture of the product after forming; the forming punch (20) is used for reversely punching the product subjected to forward punching, and the diameter of the forming punch (20) is equal to the hole diameter of the product subjected to forming.
2. The die for preventing the plane deformation after stamping according to claim 1, wherein the structure of the lower die comprises a lower die plate (12), the die cavity (25) is arranged in the lower die plate (12), the lower die plate (12) is further provided with an intermediate positioning block (19), a fixed block (23) and three sliders (16), the position of the intermediate positioning block (19) corresponds to the position between the pre-stamping punch (18) and the forming punch (20), and the positions of the fixed block (23) and the three sliders (16) correspond to the peripheries of the two punches;
the middle positioning block (19) and the fixing block (23) are fixedly arranged on the lower template (12), the three sliding blocks (16) are respectively connected to the lower template (12) in a sliding mode, and the upper die is provided with movable wedges (22) which are correspondingly matched with the three sliding blocks (16).
3. The die for preventing the plane deformation after stamping as recited in claim 2, further comprising a horizontal spring member (17), wherein the outer side of the die cavity (25) is connected with one end of the horizontal spring member (17), the other end of the horizontal spring member (17) is used for abutting against the sliding block (16), and a cavity matched with the horizontal spring member (17) is arranged in the sliding block (16).
4. The mold for preventing flat deformation after punching according to claim 2, wherein the slide (16) and the movable wedges (22) are provided with mutually matching inclined surfaces.
5. The die for preventing the plane deformation after stamping according to claim 2, wherein a plurality of groups of pressing blocks (26) are further arranged on the lower die plate (12), the pressing blocks (26) are arranged corresponding to the sliding blocks (16), each group of pressing blocks (26) comprises two pressing blocks which are symmetrically arranged, a groove is formed in the inner side surface of each pressing block (26), and a boss (161) which is in sliding fit with the groove is formed in the outer side surface of each sliding block (16).
6. The die for preventing the plane deformation after stamping according to claim 2, wherein the upper die structurally comprises a first upper base plate (9), the bottom surface of the first upper base plate is connected with an upper clamping plate (10), an upper stripper plate (21) is arranged below the first upper base plate, the first upper base plate (9) is connected with the upper stripper plate (21) through a discharging bolt (6), the upper ends of two punches are fixedly connected with the upper clamping plate (10), the lower ends of the two punches penetrate through the upper stripper plate (21), and the top surface of the first upper base plate (9) is connected with an upper die base (7) through a second upper base plate (8); one end of the movable inclined wedge (22) is movably connected with a connecting pin (11) fixed on the second upper backing plate (8) through a vertical spring piece (15).
7. The die for preventing the plane deformation after stamping according to claim 6, wherein the upper die holder (7) is connected with the upper supporting plate (1) through an upper cushion block (2), and a rubber block (3) and a rubber cushion block (4) are arranged in a gap formed between the upper die holder (7) and the upper supporting plate (1); and a push rod (5) is arranged in a gap formed between the rubber cushion block (4) and the upper stripping plate (21).
8. The die for preventing plane deformation after stamping according to claim 2, wherein the bottom surface of the lower template (12) is connected with the lower die seat (14) through a lower backing plate (13).
9. The die for preventing plane deformation after punching according to claim 1, wherein the number of the pre-punching punches (18) and the number of the forming punches (20) respectively correspond to the number of the holes to be punched on the product.
CN202122086996.0U 2021-08-31 2021-08-31 Die for preventing plane deformation after stamping Active CN215467468U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122086996.0U CN215467468U (en) 2021-08-31 2021-08-31 Die for preventing plane deformation after stamping

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122086996.0U CN215467468U (en) 2021-08-31 2021-08-31 Die for preventing plane deformation after stamping

Publications (1)

Publication Number Publication Date
CN215467468U true CN215467468U (en) 2022-01-11

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115592009A (en) * 2022-10-08 2023-01-13 安徽力翔电池科技有限公司(Cn) Precise battery top cover pole hole forming process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115592009A (en) * 2022-10-08 2023-01-13 安徽力翔电池科技有限公司(Cn) Precise battery top cover pole hole forming process

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Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Die for preventing plane deformation after stamping

Effective date of registration: 20220607

Granted publication date: 20220111

Pledgee: Bank of China Limited by Share Ltd. Wuxi Huishan branch

Pledgor: WUXI WEITONGLI ELECTRICAL Co.,Ltd.

Registration number: Y2022980007272

PC01 Cancellation of the registration of the contract for pledge of patent right
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20230418

Granted publication date: 20220111

Pledgee: Bank of China Limited by Share Ltd. Wuxi Huishan branch

Pledgor: WUXI WEITONGLI ELECTRICAL Co.,Ltd.

Registration number: Y2022980007272