CN111531039B - A mold for stretching and forming method thereof - Google Patents
A mold for stretching and forming method thereof Download PDFInfo
- Publication number
- CN111531039B CN111531039B CN202010464308.7A CN202010464308A CN111531039B CN 111531039 B CN111531039 B CN 111531039B CN 202010464308 A CN202010464308 A CN 202010464308A CN 111531039 B CN111531039 B CN 111531039B
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- stripper plate
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000008569 process Effects 0.000 claims abstract description 14
- 238000007723 die pressing method Methods 0.000 claims description 37
- 238000003825 pressing Methods 0.000 claims description 27
- 238000000465 moulding Methods 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 2
- 230000000712 assembly Effects 0.000 abstract description 6
- 238000000429 assembly Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression 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
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 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
- 230000001174 ascending effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 125000006850 spacer group Chemical group 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
- 239000008207 working material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/22—Deep-drawing with devices for holding the edge of the blanks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses a die for stretch forming and a forming method thereof, wherein the die 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, and the stripper plate is connected with the upper die assembly and is provided with a gap; the upper die assembly comprises an upper die plate and a female die stripper plate arranged on the upper die plate, 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 stripper plate arranged on the lower die plate, a lower buffer spring is arranged between the lower die plate and the male die stripper plate, delay assemblies are arranged on the upper die assembly and the stripper plate, a compressing assembly is arranged on the lower die assembly, the delay assemblies can push the compressing assembly to press the male die stripper plate, and the compressing assembly is blocked from moving before the female die stripper plate is separated from a part. The invention can avoid rebound or deformation in the process of stripping the parts, ensure the quality of the parts, and ensure more stable, reliable and effective processing.
Description
Technical Field
The invention relates to the field of dies, in particular to a die for stretch forming and a forming method thereof.
Background
In communications, new energy and electronic products, there is a common part, which is generally formed by stretching, and the top of the part is non-planar, and the part has the characteristic of thin wall due to the generally thinner material thickness, and the material of the part can be stainless steel, copper, steel and the like.
The conventional stretch forming who realizes the part through the mould, the mould includes die plate and punch plate, in stretching, the shaping is realized to punch plate and die plate compacting material, in the process of taking off the material, the punch plate is through the blank pressing limit of tensile piece to the product application ascending material removal force makes the product paste the cavity face in the die plate tightly, the die plate also exerts decurrent material removal force to the product in this process simultaneously, the product receives upper and lower pressure simultaneously, the blank pressing force of punch plate needs to be greater than the material removal force of die plate, there is a suspension district easily between product top surface and punch plate, that is to say product drawing of patterns in-process product top surface downside does not have the support, but die plate effort is always acted on the product top surface simultaneously, deformation appears very easily when receiving the roof side pressure to this kind of thin wall high radian tensile piece, cause product resilience and dimensional change.
Based on the problems in the stretching of the above parts, it is necessary to develop a mold and a molding method to avoid deformation and rebound of the top surface of the parts caused by the stress of the top surface during the molding of the mold.
Disclosure of Invention
In order to solve the technical problems, the invention provides a die for stretch forming and a forming method thereof, which can avoid unexpected deformation in the process of stretch forming a part, so that the size and the shape of the formed part are changed.
The die for stretch forming 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 pressing plate arranged on the lower die plate, a lower buffer spring is arranged between the lower die plate and the male die pressing plate, and the male die pressing plate and the female die stripping plate are mutually matched and stretch-form parts positioned between the two;
The upper die assembly and the stripper plate are provided with a delay assembly, the lower die assembly is provided with a pressing assembly, the delay assembly can push the pressing assembly to press the convex film stripper plate, the pressing assembly is blocked to move before the concave die stripper plate breaks away from the part, the machining precision of the part is improved, and deformation of the part in the stripping process is avoided.
Optionally, the delay component comprises a sliding block slotting tool arranged on the upper die component and a limiting slotting tool arranged on the stripper plate, wherein the distance between the lower end of the sliding block slotting tool and the lower die component is greater than that between the lower end of the limiting slotting tool and the lower die component;
The pressing assembly comprises a sliding block arranged on the lower die plate and a reset spring connected with the sliding block, a telescopic pin is arranged on the sliding block, and the sliding block is positioned between the male die pressing plate and the reset spring.
Optionally, the slider slotting tool and the spacing slotting tool are towards one side lower extreme of terrace die pressure flitch is equipped with the inclined plane, be equipped with on the slider with slider slotting tool's inclined plane complex slider inclined plane.
Optionally, a protruding portion is arranged at the upper end of one side, facing the male die pressing plate, of the sliding block, and the protruding portion is used for pressing the surface of the male die pressing plate.
Optionally, a forming concave template is respectively arranged at two sides of the concave die stripper plate, an upper die pad plate connected with the upper die pad plate is arranged below the upper template, the upper die pad plate is connected with the forming concave template, and the forming concave template is connected with the stripper plate.
A mold forming method for stretch forming, comprising the steps of:
S1, controlling the upper die assembly to move downwards to enable the stripper plate to be attached to the lower die assembly, and stopping moving the stripper plate after attaching;
S2, controlling the upper die assembly to continuously move downwards to enable the female die stripper plate and the male die press plate to be closed, and stretching and forming the part;
S3, controlling the upper die assembly to move upwards to enable the upper die plate to move upwards, wherein before the female die stripper plate is not separated from the part, the male die stripper plate is not moved due to being pressed by the pressing assembly;
and S4, controlling the upper die assembly to continuously move upwards, resetting the upper buffer spring, and enabling the compacting assembly not to press the male die pressing plate any more, wherein the male die pressing plate moves upwards under the driving of resetting of the lower buffer spring.
Optionally, the step S1 specifically includes that the limiting slotting tool moves downwards along with the stripper plate, the telescopic pin on the sliding block is pressed into the sliding block, and the limiting slotting tool continues to move until the stripper plate stops moving.
Optionally, in the moving process, the step S2 specifically includes that the sliding block inserting knife pushes the sliding block to move, so that the sliding block presses the male die pressing plate after the female die stripper plate and the male die pressing plate are closed, and the sliding block is blocked from moving by the limiting inserting knife.
Optionally, the step S3 specifically includes that the upper die assembly moves upwards, so that the sliding block slotting tool leaves the surface of the sliding block, and the sliding block of the telescopic pin is not moved due to the blocking of the limiting slotting tool, and at this time, the male die pressing plate is not moved.
Optionally, the step S4 specifically includes resetting the upper buffer spring to enable the limiting slotting tool to leave the telescopic pin, resetting the reset spring to drive the sliding block to move, and driving the male die pressing plate to move upwards under the drive of the lower buffer spring.
Compared with the prior art, the die and the forming method for the stretch forming have the advantages that in the process of stripping after the forming of the parts, the parts are clung to the male die pressing plate and the female die stripping plate by the delay component and the compression component, the force is gradually unloaded according to the forming steps, the parts are prevented from rebounding or deforming, the shapes and the sizes of the parts after the stretch forming are ensured to be the same as those of the preset parts, the quality of the parts is ensured, the processing precision is improved, the appearance requirements of the parts after the stretch forming are met, the die structure and the forming method are simple, complex structures such as electric control or pneumatic control are not needed, and the processing is more stable, reliable and effective.
Drawings
Fig. 1 is a schematic structural diagram of a die for stretch forming according to an embodiment of the present application;
Fig. 2 is a schematic structural diagram of a mold 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 application;
fig. 4 is a schematic structural diagram of a mold for stretch forming according to an embodiment of the present application.
Detailed Description
The present invention will be further described with reference to the drawings and examples.
Referring to fig. 1-4, a die for stretch forming comprises an upper die assembly 1, a lower die assembly 2 arranged 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, a gap 4 is arranged 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, 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 stripper plate 22 arranged on the lower die plate, a lower buffer spring 23 is arranged between the lower die plate 21 and the male die stripper plate 22, and the male die stripper plate 22 and the female die stripper plate 12 are mutually matched and stretch-form a part 10 arranged between the upper die assembly and the lower die stripper plate.
The upper die assembly 1 and the stripper plate 3 are provided with a delay assembly 5, the lower die assembly is provided with a pressing assembly 6, and the delay assembly 5 can push the pressing assembly 6 to press the convex film stripper plate 22 and block the pressing assembly 6 from moving before the concave die stripper plate 12 is separated from the part 10. Specifically, the male die pressing plate 22 and the female die stripping plate 12 are matched with each other to stretch the part 10 to be molded, after the part is molded, the upper die assembly 1 moves upwards, the female die stripping plate 13 presses the part due to downward acting force of the upper buffer spring 13, at this time, the part 10 is only subjected to downward acting force and is clung to the male die pressing plate 22 and the female die stripping plate 12, after the upper buffer spring 13 is completely reset, the male die pressing plate 22 starts to move upwards due to resetting acting force of the lower buffer spring 23, the male die stripping plate 22 presses the part, the part 10 is only subjected to upward acting force and clung to the male die pressing plate 22 and the female die stripping plate 12, and it is understood that the part 10 always clings to the male die pressing plate 22 and the female die stripping plate 12 in the product stripping process of the part 10, abnormal deformation of the part due to downward and upward acting force is not caused, the shape and the size of the molded part 10 are ensured to meet the requirements, and the quality of a product is ensured.
In some embodiments, the delay assembly 5 includes a sliding block insert 51 provided on the upper die assembly 1, and a limiting insert 52 provided on the stripper plate 3, and a distance between a lower end of the sliding block insert 51 and the lower die assembly 2 is greater than a distance between a lower end of the limiting insert 52 and the lower die assembly 2. In some embodiments, the compression assembly 6 includes a slider 61 provided on the lower die plate 21 and a return spring 62 connected to the slider, the slider 61 being provided with a telescoping pin 63, the slider 61 being located between the punch stripper plate 22 and the return spring 62. The telescopic pin 63 normally protrudes from the slide and is retractable into the slide under load, the limit blade 52 cooperates with the telescopic pin 63 to press the slide 61 against the punch press 22 or away from the punch press 22, and the slide blade 51 cooperates with the slide 61 to push the slide 61 against the punch press 22.
The number of the pressing assemblies 6 and the number of the delay assemblies 5 are two, the two pressing assemblies 6 are respectively arranged on two sides of the female die stripper plate 12, the two delay assemblies 5 are respectively arranged on two sides of the male die stripper 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 molding is ensured.
In some embodiments, the lower end of the side of the sliding block insert 51 and the limiting insert 52 facing the punch press plate 22 is provided with an inclined surface, and the sliding block 61 is provided with a sliding block inclined surface matched with the inclined surface of the sliding block insert 51. The slider 61 is provided with a projection 611 at the upper end of the side facing the punch press plate 22, the projection 611 being for pressing the surface of the punch press plate 22. Specifically, the inclined surface on the sliding block insert 51 is matched with the inclined surface of the sliding block so that the sliding block 61 can receive the acting force of moving towards the male die pressing plate 22, the inclined surface on the limiting insert 52 is matched with the telescopic pin 63, and the telescopic pin 63 is forced to retract into the sliding block 61 in the process of moving down the limiting insert 52.
In some embodiments, two sides of the female stripper plate 12 are respectively provided with a forming female die plate 14, an upper die cushion plate 15 connected with the forming female die plate 14 is arranged below the upper die plate 11, the upper die cushion plate 15 is connected with the forming female die plate 14, and the forming female die plate 14 is connected with the stripper plate 3. The lower end of one side of the molding female die plate 14, which is close to the female die stripper plate 12, is provided with a notch 16, and a sliding block inserting knife 51 is arranged on the upper die backing plate 15.
The stripper plate 3 is provided with a stripper plate backing plate 7 connected with the stripper plate, the stripper plate backing plate 7 is connected with the upper die assembly 1 and a gap 4 exists between the stripper plate backing plate and the upper die assembly 1, the stripper plate backing plate 7 is connected with the forming concave die plate 14, and a limiting insert cutter 52 can be arranged on the stripper plate backing plate 7.
The invention also provides a die forming method for stretch forming, which comprises the following steps:
s1, referring to the attached drawing 1, controlling the upper die assembly 1 to move downwards to enable the stripper plate 3 to be attached to the lower die assembly 2, and stopping moving the stripper plate after attaching;
specifically, as the stripper plate 3 moves downward, the telescopic pin 63 on the slider 61 is pressed into the slider 61, and the spacer blade 52 continues to move until the stripper plate 3 stops moving, and in this step, the slider blade 51 does not contact the slider.
S2, referring to the attached drawing 2, the upper die assembly 1 is controlled to move downwards continuously, so that the female die stripper plate 12 and the male die stripper plate 22 are closed, and the upper die assembly 1, the stripper plate 3 and the lower die assembly 2 are mutually attached, and the part 10 is formed in a stretching way;
Step S2 specifically comprises that in the moving process, the sliding block inserting knife 51 pushes the sliding block 61 to move, so that the sliding block 61 presses the male die pressing plate 22 after the female die stripper plate 12 and the male die pressing plate 22 are closed, the telescopic pin 63 pops up, and the sliding block is blocked from moving by the limiting inserting knife 52.
S3, referring to the figure 3, the molded part 10 starts to be stripped, the upper die assembly 1 is controlled to move upwards, the upper die plate 11 is controlled to move upwards, and the male die stripper plate 22 is not moved because the male die stripper plate 12 is pressed by the pressing assembly 5 before the female die stripper plate 12 is not separated from the part, namely, before the upper buffer spring 13 is not completely reset;
Step S3 specifically includes moving the upper die assembly 1 upward such that the slide insert 51 is moved away from the surface of the slide 61, and the slide 61 is not moved by the telescopic pin 63 due to being blocked by the limit insert 52, at which time the punch press plate 22 is not moved, and the part 10 is only subjected to downward force by the die stripper plate 12.
S4, referring to fig. 4, the upper die assembly 1 is controlled to move upwards, so that the upper buffer spring 13 is completely reset, at the moment, the pressing assembly 6 does not press the male die pressing plate 22 any more, and the male die pressing plate 22 moves upwards under the drive of reset of the lower buffer spring 23.
Step S4 specifically includes resetting the upper buffer spring 23 to separate the limiting knife 52 from the telescopic pin, resetting the return spring 62 to drive the slide block 61 to move, and moving the punch press plate 22 upwards under the drive of the lower buffer spring 23, where the part 10 is only acted on by the upward force of the punch press plate 22.
It will be appreciated that the working material of the present invention may be steel, copper, etc., and is not limited thereto, and is applicable to a soft, thin, highly elastic material. In addition, the surface radians of the male die pressing plate and the female die stripping plate can be set according to actual processing requirements.
The invention provides a die for stretch forming and a forming method thereof, wherein in the process of stripping after forming a part, a part is tightly attached to a male die pressing plate and a female die stripping plate by a delay assembly and a compression assembly, force is gradually discharged according to forming steps, the part is prevented from rebounding or deforming, the shape and the size of the part after stretch forming are ensured to be the same as those of a preset part, the quality of the part is ensured, the processing precision is improved, and the appearance requirement of the part after stretching is met.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but the present invention is described in detail with reference to the foregoing embodiments, and it will be apparent to those skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or that equivalents may be substituted for part of the technical features thereof. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present embodiment are included in the protection scope of the present invention.
Claims (8)
1. The die for stretch forming is characterized by comprising an upper die assembly (1) and 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 is provided with a gap (4) between the upper die assembly and the lower die assembly;
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 stripping plate (12) are matched with each other and stretch-form a part (10) positioned between the two;
The upper die assembly (1) and the stripper plate (3) are provided with a delay assembly (5), the lower die assembly (2) is provided with a pressing assembly (6), the delay assembly (5) can push the pressing assembly (6) to press the convex film stripper plate (22), and the pressing assembly (6) is blocked from moving before the concave die stripper plate (12) is separated from the part (10);
After the part is formed, the upper die assembly (1) moves upwards, the part is pressed by an upper buffer spring (13) under the downward acting force, the part is only pressed by a lower acting force and is clung to a male die pressing plate (22) and a female die stripping plate (12), after the upper buffer spring (13) is completely reset, the male die pressing plate (22) starts to move upwards under the resetting acting force of a lower buffer spring (23), the part is pressed by the male die pressing plate (22), and the part is only pressed by the upward acting force and is clung to the male die pressing plate (22) and the female die stripping plate (12);
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), wherein 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 positioned between the male die pressing plate (22) and the return spring (62);
A forming concave template (14) is arranged on two sides of the concave die stripping plate (12), an upper die base plate (15) connected with the upper die base plate is arranged below the upper template (11), the upper die base plate (15) is connected with the forming concave template (14), and the forming concave template (14) is connected with the stripping plate (3).
2. The die for stretch forming according to claim 1, wherein the slide block insert (51) and the limit insert (52) are provided with inclined surfaces at lower ends of sides facing the male die pressing plate (22), and the slide block (61) is provided with a slide block inclined surface matched with the inclined surface of the slide block insert (51).
3. A die for stretch forming according to claim 1 or 2, wherein the slider (61) is provided with a protrusion (611) at an upper end of a side facing the male die plate (22), the protrusion (611) being for pressing against a surface of the male die plate (22).
4. A mold molding method for stretch molding, comprising the mold according to claim 1;
The method comprises the following steps:
S1, controlling the upper die assembly (1) to move downwards, enabling the stripper plate (3) to be attached to the lower die assembly (2), and stopping moving the stripper plate (3) after attaching;
S2, controlling the upper die assembly (1) to continuously move downwards to enable the female die stripper plate (12) and the male die presser plate (22) to be closed, and stretching and forming the part (10), wherein in the moving process, the delay assembly (5) pushes the pressing assembly (6) to move, and the pressing assembly (6) presses the male die presser plate (22) and blocks the movement of the male die presser plate after the pressing assembly is closed;
s3, controlling the upper die assembly (1) to move upwards, so that the upper die plate (11) moves upwards, and the male die pressing plate (22) does not move due to being pressed by the pressing assembly (6) before the female die stripper plate (12) is not separated from the part (10);
And S4, controlling the upper die assembly (1) to continuously move upwards, resetting the upper buffer spring (13), and enabling the pressing assembly (6) not to press the male die pressing plate (22) any more, wherein the male die pressing plate (22) is driven by the resetting of the lower buffer spring (23) to move upwards.
5. A mold molding method for stretch-forming according to claim 4, wherein the step S1 specifically includes that the limiting knife (52) moves downward along with the stripper plate (3) so that the telescopic pin (63) on the slider (61) is pressed into the slider (61), and the limiting knife (52) continues to move until the stripper plate (3) stops moving.
6. A molding method of a mold for stretch forming according to claim 4, wherein the step S2 comprises the steps of pushing the slide (61) by the slide cutter (51) during the moving process, pressing the slide (61) against the punch press plate (22) after the die stripper plate (12) and the punch press plate (22) are closed, and blocking the slide (61) from moving by the limiting cutter (52).
7. A mold molding method for stretch-forming according to claim 4, wherein the step S3 specifically includes moving the upper die assembly (1) upward such that the slide insert (51) is away from the surface of the slide (61) and the slide (61) is not moved by the telescopic pin (63) due to being blocked by the limit insert (52) while the punch press plate (22) is not moved.
8. A molding method of a mold for stretch forming according to claim 4, wherein the step S4 specifically includes resetting the upper buffer spring (13) to enable the limit plunger (52) to leave the telescopic pin (63), and resetting the reset spring (62) to drive the slider (61) to move, and driving the punch press plate (22) to move upwards by the lower buffer spring (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010464308.7A CN111531039B (en) | 2020-05-27 | 2020-05-27 | A mold for stretching and forming method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010464308.7A CN111531039B (en) | 2020-05-27 | 2020-05-27 | A mold for stretching and forming method thereof |
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| Publication Number | Publication Date |
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| CN111531039A CN111531039A (en) | 2020-08-14 |
| CN111531039B true CN111531039B (en) | 2025-03-18 |
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| CN113172154A (en) * | 2021-04-16 | 2021-07-27 | 深圳数码模汽车技术有限公司 | A kind of automobile fixing plate part in-mold bridge side forming mold and forming method |
| CN117920865A (en) * | 2023-03-31 | 2024-04-26 | 王恩桃 | A kind of slide type mold structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1600471A (en) * | 2004-09-29 | 2005-03-30 | 刘清云 | Stretch drawing die |
| CN105013918A (en) * | 2015-07-02 | 2015-11-04 | 奇瑞汽车股份有限公司 | Complicated surface plate drawing mold and control method thereof |
| CN212238908U (en) * | 2020-05-27 | 2020-12-29 | 万盛兴精密技术（惠州）有限公司 | Die for stretch forming |
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| CN111531039A (en) | 2020-08-14 |
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