CN212238908U - Die for stretch forming - Google Patents
Die for stretch forming Download PDFInfo
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- CN212238908U CN212238908U CN202020939119.6U CN202020939119U CN212238908U CN 212238908 U CN212238908 U CN 212238908U CN 202020939119 U CN202020939119 U CN 202020939119U CN 212238908 U CN212238908 U CN 212238908U
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- pressing
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- 238000003825 pressing Methods 0.000 claims abstract description 54
- 230000000712 assembly Effects 0.000 claims abstract description 20
- 238000000429 assembly Methods 0.000 claims abstract description 20
- 238000007723 die pressing method Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 abstract description 16
- 238000000034 method Methods 0.000 abstract description 14
- 238000010586 diagram Methods 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Abstract
The utility model discloses a die for stretch forming, which comprises an upper die assembly, a lower die assembly below the upper die assembly, and a stripper plate arranged between the upper die assembly and the lower die assembly, wherein the stripper plate is connected with the upper die assembly and a gap is arranged between the stripper plate and the upper die assembly; the upper die assembly comprises an upper die plate and a female die stripper plate arranged on the upper die plate, and an upper buffer spring is arranged between the upper die plate and the female die stripper plate; the lower die assembly comprises a lower die plate and a male die pressure plate arranged on the lower die plate, and a lower buffer spring is arranged between the lower die plate and the male die pressure plate; the upper die assembly and the stripper plate are provided with delay assemblies, the lower die assembly is provided with a pressing assembly, the delay assemblies can push the pressing assembly to press the convex film pressing plate, and the pressing assembly is blocked from moving before the concave die stripper plate is separated from a part. The utility model discloses can avoid the part to take off the material in-process and take place to kick-back or warp, ensure the quality of part, processing is more stable, reliable and effective.
Description
Technical Field
The utility model relates to a mould field, specific theory especially relates to a mould for stretch forming.
Background
The parts are generally formed by stretching, the top of the parts is in a non-planar shape, the parts have the characteristic of thin wall due to the fact that the thickness of the materials is generally thin, and the materials of the parts can be stainless steel, copper materials, steel materials and the like.
Conventionally, the stretch forming of parts is realized through a die, the die comprises a concave die plate and a convex die plate, the stretch convex die plate and the concave die plate compress materials to realize forming, in the material removing process, the convex die plate applies upward material removing force to a product through a material pressing edge of a stretching piece to enable the product to be attached to a concave cavity surface in the concave die plate, meanwhile, the concave die plate also applies downward material removing force to the product in the process, the product is simultaneously subjected to vertical pressure, the material pressing force of the convex die plate is larger than the material removing force of the concave die plate, a suspension area is easily formed between the top surface of the product and the convex die plate, namely, the lower side surface of the top surface of the product is not supported in the product demolding process, meanwhile, the acting force of the concave die plate is always acted on the top surface of the product, deformation is easily caused when the thin-wall large-radian stretching piece receives top side.
Based on the problems existing in the stretching of the parts, a mold needs to be developed to avoid the deformation and resilience of the top surface of the part caused by the stress of the top surface in the molding process of the mold.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a be used for stretch forming's mould can avoid the part stretch forming in-process to take place unexpected deformation, leads to the size and the shape of shaping part to change.
A die for stretch forming comprises an upper die assembly, a lower die assembly and a stripper plate, wherein the lower die assembly is arranged below the upper die assembly, the stripper plate is arranged between the upper die assembly and the lower die assembly, the stripper plate is connected with the upper die assembly, and a gap is formed between the stripper plate and the upper die assembly;
the upper die assembly comprises an upper die plate and a female die stripper plate arranged on the upper die plate, and an upper buffer spring is arranged between the upper die plate and the female die stripper plate;
the lower die assembly comprises a lower die plate and a male die pressure plate arranged on the lower die plate, a lower buffer spring is arranged between the lower die plate and the male die pressure plate, and the male die pressure plate and the female die stripper plate are matched with each other and are used for stretching and forming parts positioned between the male die pressure plate and the female die stripper plate;
the upper die assembly and the stripper plate are provided with delay assemblies, the lower die assembly is provided with a pressing assembly, the delay assemblies can push the pressing assembly to press the convex film pressing plate, and the pressing assembly is blocked from moving before the concave die stripper plate is separated from a part, so that the processing precision of the part is improved, and the part is prevented from deforming in the stripping process.
Optionally, the delay assembly comprises a sliding block slotting tool arranged on the upper die assembly and a limiting slotting tool arranged on the stripper plate, and the distance between the lower end of the sliding block slotting tool and the lower die assembly is greater than the distance between the lower end of the limiting slotting tool and the lower die assembly;
the pressing assembly comprises a sliding block arranged on the lower die plate and a return spring connected with the sliding block, a telescopic pin is arranged on the sliding block, and the sliding block is located between the punch pressing plate and the return spring.
Optionally, the lower end of one side of the sliding block slotting tool and the limiting slotting tool, which face the punch material pressing plate, is provided with an inclined plane, and the sliding block is provided with a sliding block inclined plane matched with the inclined plane of the sliding block slotting tool.
Optionally, a protruding portion is arranged at the upper end of one side, facing the punch pressing plate, of the sliding block, and the protruding portion is used for pressing the surface of the punch pressing plate.
Optionally, a forming concave plate is arranged on each of two sides of the female die stripper plate, an upper die base plate connected with the upper die plate is arranged below the upper die plate, the upper die base plate is connected with the forming concave plate, and the forming concave plate is connected with the stripper plate.
Optionally, a notch is formed in the lower end of one side, close to the female die stripper plate, of the forming female die plate.
Optionally, a stripper plate backing plate connected with the stripper plate is arranged above the stripper plate, and a gap exists between the stripper plate backing plate and the upper die assembly.
Optionally, the number of the pressing assemblies and the number of the delay assemblies are both 2, the two pressing assemblies are respectively arranged on two sides of the female die stripper plate, and the two delay assemblies are respectively arranged on two sides of the male die pressure plate.
Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model provides a mould for stretch forming, in the material taking off process after the part shaping, the part that delay assembly and compress tightly the subassembly messenger hugs closely terrace die pressure flitch and die and takes off the flitch, avoids the part to take place to kick-back or warp, guarantees that shape and size after the part stretch forming are the same with predetermined, guarantees the quality of part, has improved the precision of processing, satisfies the outward appearance requirement after drawing to the part; the utility model discloses a mould simple structure need not adopt complex construction such as automatically controlled or gas accuse, and the processing of messenger is more stable, reliable and effective.
Drawings
FIG. 1 is a first schematic structural diagram of a die for stretch forming according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram ii of a die for stretch forming according to an embodiment of the present application;
FIG. 3 is a schematic structural diagram III of a die for stretch forming according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram four of a die for stretch forming according to an embodiment of the present application.
Detailed Description
The contents of the present invention will be further described with reference to the accompanying drawings and examples.
Referring to the attached drawings 1-4, the die for stretch forming comprises an upper die assembly 1, a lower die assembly 2 below the upper die assembly 1, and a stripper plate 3 arranged between the upper die assembly 1 and the lower die assembly 2, wherein the stripper plate 3 is connected with the upper die assembly 1, and a gap 4 is formed between the stripper plate 3 and the upper die assembly 1; the upper die assembly 1 comprises an upper die plate 11 and a female die stripper plate 12 arranged on the upper die plate, and an upper buffer spring 13 is arranged between the upper die plate 11 and the female die stripper plate 12; the lower die assembly 2 comprises a lower die plate 21 and a punch pressing plate 22 arranged on the lower die plate, a lower buffer spring 23 is arranged between the lower die plate 21 and the punch pressing plate 22, and the punch pressing plate 22 and the die stripper plate 12 are matched with each other and stretch-form the part 10 positioned between the punch pressing plate and the die stripper plate.
The upper die assembly 1 and the stripper plate 3 are provided with delay assemblies 5, the lower die assembly is provided with a pressing assembly 6, the delay assemblies 5 can push the pressing assembly 6 to press a convex film pressing plate 22, and the pressing assembly 6 is blocked from moving before the concave die stripper plate 12 is separated from the part 10. Specifically, the punch pressure plate 22 and the die stripper plate 12 are matched with each other to stretch and form the part 10, after the part is formed, the upper die assembly 1 moves upwards, the die stripper plate 13 presses the part due to the downward acting force of the upper buffer spring 13, at this time, the part 10 only receives the downward acting force and is tightly attached to the punch pressure plate 22 and the die stripper plate 12, after the upper buffer spring 13 is completely reset, the punch pressure plate 22 starts to move upwards due to the reset acting force of the lower buffer spring 23, the punch stripper plate 22 presses the part, the part 10 only receives the upward acting force and is tightly attached to the punch pressure plate 22 and the die stripper plate 12, it can be understood that, in the process of stripping the part 10 product, the part 10 is always tightly attached to the punch pressure plate 22 and the die stripper plate 12, the abnormal deformation of the part due to the downward and upward acting forces can not be caused at the same time, and the shape and size of the formed part 10, ensure the quality of the product.
In some embodiments, the delay assembly 5 includes a slider insert 51 provided on the upper die assembly 1, and a limit insert 52 provided on the stripper plate 3, and a lower end of the slider insert 51 is spaced from the lower die assembly 2 by a distance greater than a distance between a lower end of the limit insert 52 and the lower die assembly 2. In some embodiments, the pressing assembly 6 includes a slider 61 disposed on the lower die plate 21 and a return spring 62 connected to the slider, the slider 61 is provided with a telescopic pin 63, and the slider 61 is located between the punch press plate 22 and the return spring 62. The retractable pin 63 normally extends from the slide and is retractable under load into the slide, the limit plug 52 cooperates with the retractable pin 63 to effect the slide 61 pressing against the punch press plate 22 or moving away from the punch press plate 22, and the slide plug 51 cooperates with the slide 61 to effect the slide 61 pushing against the punch press plate 22.
The number of the pressing assemblies 6 and the delaying assemblies 5 is two, the two pressing assemblies 6 are respectively arranged on two sides of the female die stripper plate 12, the two delaying assemblies 5 are respectively arranged on two sides of the male die pressure plate 22, so that the stress balance of the upper die assembly 1, the lower die assembly 2 and the stripper plate 3 in the moving process can be ensured, and the quality of part forming is ensured.
In some embodiments, the lower end of the side of the slide insert 51 and the limiting insert 52 facing the punch holder 22 is provided with an inclined surface, and the slide 61 is provided with a slide inclined surface matched with the inclined surface of the slide insert 51. The upper end of the side of the slide block 61 facing the punch holder 22 is provided with a convex portion 611, and the convex portion 611 is used for pressing the surface of the punch holder 22. Specifically, the inclined surface of the slider slotting tool 51 is matched with the inclined surface of the slider, so that the slider 61 can be acted by the force moving towards the punch pressing plate 22; the inclined surface on the limit slotting tool 52 is matched with the telescopic pin 63, so that the telescopic pin 63 is forced to retract into the sliding block 61 in the downward moving process of the limit slotting tool 52.
In some embodiments, a forming cavity plate 14 is disposed on each side of the cavity stripper plate 12, an upper die cushion plate 15 connected to the upper die plate 11 is disposed below the upper die plate, the upper die cushion plate 15 is connected to the forming cavity plate 14, and the forming cavity plate 14 is connected to the stripper plate 3. The lower end of one side of the forming die plate 14 close to the die stripper plate 12 is provided with a notch 16, and a slider slotting tool 51 is arranged on the upper die backing plate 15.
The upper portion of the stripper plate 3 is provided with a stripper plate backing plate 7 connected with the stripper plate 3, the stripper plate backing plate 7 is connected with the upper die assembly 1, a gap 4 exists between the stripper plate backing plate 7 and the upper die backing plate 15, specifically, the stripper plate backing plate 7 is connected with the forming concave die plate 14, the gap 4 exists between the stripper plate backing plate 7 and the upper die backing plate 15, and the limiting slotting tool 52 can be installed on the stripper plate backing plate 7.
Adopt the utility model discloses a mould forming method for stretch forming, including following step:
s1: referring to the attached drawing 1, an upper die assembly 1 is controlled to move downwards, so that a stripper plate 3 is attached to a lower die assembly 2, and the stripper plate stops moving after attachment;
specifically, the limiting slotting tool 52 moves downwards along with the stripper plate 3, the telescopic pin 63 on the slide block 61 is pressed into the slide block 61, the limiting slotting tool 52 continues to move until the stripper plate 3 stops moving, and the slide block slotting tool 51 does not contact the slide block in the step.
S2: referring to the attached drawing 2, the upper die assembly 1 is controlled to continuously move downwards, so that the female die stripper plate 12 and the male die pressure plate 22 are closed, at the moment, the upper die assembly 1, the stripper plate 3 and the lower die assembly 2 are attached to each other, and the part 10 is formed in a stretching mode; during the movement, the delay assembly 5 pushes the pressing assembly 6 to move, and after the closing, the pressing assembly 6 presses the punch pressing plate 22 and blocks the movement;
step S2 specifically includes: in the moving process, the slide block slotting tool 51 pushes the slide block 61 to move, so that the slide block 61 presses the punch pressing plate 22 after the female die stripper plate 12 and the punch pressing plate 22 are closed, the telescopic pin 63 is ejected, and the slide block is blocked by the limiting slotting tool 52 from moving.
S3: referring to fig. 3, the formed part 10 starts to strip, the upper die assembly 1 is controlled to move upwards, so that the upper die plate 11 moves upwards, and before the female die stripping plate 12 is not separated from the part, that is, before the upper buffer spring 13 is not completely reset, the male die pressing plate 22 is pressed by the pressing assembly 5 and does not move;
step S3 specifically includes: the upper die assembly 1 moves upwards to enable the slide block slotting tool 51 to leave the surface of the slide block 61, the slide block 61 does not move due to the fact that the telescopic pin 63 is blocked by the limiting slotting tool 52, the male die pressing plate 22 does not move at the moment, and the part 10 is only acted by the downward force of the female die stripper plate 12.
S4: referring to fig. 4, the upper die assembly 1 is controlled to continue to move upwards, so that the upper buffer spring 13 is completely reset, at this time, the pressing assembly 6 no longer presses the punch pressing plate 22, and the punch pressing plate 22 moves upwards under the driving of the reset of the lower buffer spring 23.
Step S4 specifically includes: the upper buffer spring 23 is reset, so that the limiting slotting tool 52 leaves the telescopic pin, the reset spring 62 is reset to drive the sliding block 61 to move, the punch pressing plate 22 is driven by the lower buffer spring 23 to move upwards, and the part 10 is only subjected to the upward acting force of the punch pressing plate 22 in the step.
It is understood that the processing material of the present invention can be steel, copper, etc., and is also suitable for soft, thin, and highly elastic materials, which is not limited herein. In addition, the surface radians of the punch pressing plate and the die stripper plate can be set according to the actual processing requirement.
The utility model provides a mould for stretch forming, in the material taking off process after the part shaping, the part that delay assembly and compress tightly the subassembly messenger hugs closely terrace die pressure flitch and die and takes off the flitch, avoids the part to take place to kick-back or warp, guarantees that shape and size after the part stretch forming are the same with predetermined, guarantees the quality of part, has improved the precision of processing, satisfies the outward appearance requirement after drawing to the part; the utility model discloses a mould simple structure need not adopt complex construction such as automatically controlled or gas accuse, and the processing of messenger is more stable, reliable and effective.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (8)
1. A mould for stretch forming, characterized in that: the device comprises an upper die assembly (1), a lower die assembly (2) below the upper die assembly, and a stripper plate (3) arranged between the upper die assembly (1) and the lower die assembly (2), wherein the stripper plate (3) is connected with the upper die assembly (1) and a gap (4) is arranged between the stripper plate and the upper die assembly (1);
the upper die assembly (1) comprises an upper die plate (11) and a female die stripper plate (12) arranged on the upper die plate, and an upper buffer spring (13) is arranged between the upper die plate (11) and the female die stripper plate (12);
the lower die assembly (2) comprises a lower die plate (21) and a male die pressing plate (22) arranged on the lower die plate (21), a lower buffer spring (23) is arranged between the lower die plate (21) and the male die pressing plate (22), and the male die pressing plate (22) and the female die stripper plate (12) are matched with each other and stretch-form a part (10) positioned between the male die pressing plate and the female die stripper plate;
the die is characterized in that delay assemblies (5) are arranged on the upper die assembly (1) and the stripper plate (3), a pressing assembly (6) is arranged on the lower die assembly (2), the delay assemblies (5) can push the pressing assembly (6) to press a convex film pressing plate (22), and the pressing assembly (6) is blocked to move before the concave die stripper plate (12) is separated from the part (10).
2. A die for stretch forming according to claim 1, wherein:
the delay assembly (5) comprises a sliding block slotting tool (51) arranged on the upper die assembly (1) and a limiting slotting tool (52) arranged on the stripper plate (3), and the distance between the lower end of the sliding block slotting tool (51) and the lower die assembly (2) is greater than the distance between the lower end of the limiting slotting tool (52) and the lower die assembly (2);
the pressing assembly (6) comprises a sliding block (61) arranged on the lower die plate (21) and a return spring (62) connected with the sliding block (61), a telescopic pin (63) is arranged on the sliding block (61), and the sliding block (61) is located between the punch pressing plate (22) and the return spring (62).
3. A die for stretch forming according to claim 2, wherein: the lower end of one side, facing the punch pressing plate (22), of the sliding block slotting tool (51) and the limiting slotting tool (52) is provided with an inclined plane, and a sliding block inclined plane matched with the inclined plane of the sliding block slotting tool (51) is arranged on the sliding block (61).
4. A die for stretch forming according to claim 2 or 3, wherein: the upper end of one side, facing the punch press plate (22), of the slide block (61) is provided with a protruding part (611), and the protruding part (611) is used for pressing the surface of the punch press plate (22).
5. A die for stretch forming according to claim 1, wherein: the die stripper plate is characterized in that forming die plates (14) are respectively arranged on two sides of the die stripper plate (12), an upper die base plate (15) connected with the upper die plate (11) is arranged below the upper die plate, the upper die base plate (15) is connected with the forming die plates (14), and the forming die plates (14) are connected with the stripper plate (3).
6. A die for stretch forming according to claim 5, wherein: and a notch (16) is formed at the lower end of one side of the forming concave template (14) close to the concave die stripper plate (12).
7. A die for stretch forming according to claim 1, wherein: a stripper plate backing plate (7) connected with the stripper plate (3) is arranged above the stripper plate (3), and the stripper plate backing plate (7) is connected with the upper die assembly (1) and a gap exists between the stripper plate backing plate and the upper die assembly.
8. A die for stretch forming according to claim 1, wherein: the number of the pressing assemblies (6) and the number of the delay assemblies (5) are both 2, the two pressing assemblies (6) are respectively arranged on two sides of the female die stripper plate (12), and the two delay assemblies (5) are respectively arranged on two sides of the male die pressure plate (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020939119.6U CN212238908U (en) | 2020-05-27 | 2020-05-27 | Die for stretch forming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020939119.6U CN212238908U (en) | 2020-05-27 | 2020-05-27 | Die for stretch forming |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212238908U true CN212238908U (en) | 2020-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020939119.6U Active CN212238908U (en) | 2020-05-27 | 2020-05-27 | Die for stretch forming |
Country Status (1)
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| CN (1) | CN212238908U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111531039A (en) * | 2020-05-27 | 2020-08-14 | 万盛兴精密技术（惠州）有限公司 | Die for stretch forming and forming method thereof |
-
2020
- 2020-05-27 CN CN202020939119.6U patent/CN212238908U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111531039A (en) * | 2020-05-27 | 2020-08-14 | 万盛兴精密技术（惠州）有限公司 | Die for stretch forming and forming method thereof |
| CN111531039B (en) * | 2020-05-27 | 2025-03-18 | 万盛兴精密技术（惠州）有限公司 | A mold for stretching and forming method thereof |
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