CN113843351A - Negative angle product forming device and negative angle product forming method - Google Patents
Negative angle product forming device and negative angle product forming method Download PDFInfo
- Publication number
- CN113843351A CN113843351A CN202111120940.0A CN202111120940A CN113843351A CN 113843351 A CN113843351 A CN 113843351A CN 202111120940 A CN202111120940 A CN 202111120940A CN 113843351 A CN113843351 A CN 113843351A
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- splicing
- negative angle
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000000047 product Substances 0.000 claims abstract description 77
- 239000011265 semifinished product Substances 0.000 claims abstract description 64
- 238000003825 pressing Methods 0.000 claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 238000000465 moulding Methods 0.000 claims abstract description 11
- 238000004080 punching Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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- 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
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
-
- 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
- B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
-
- 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
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
Abstract
The invention discloses a negative angle product forming device which comprises a lower die, an upper die and a pressing mechanism, wherein die cavities for dividing parts in different die opening directions in a negative angle product and forming a plurality of semi-finished products in a blocking mode are arranged on the lower die and the upper die, a splicing cavity for pre-splicing and combining the semi-finished products in the die cavities is reserved, splicing edges of the semi-finished products in the splicing cavity are designed on a die assembly surface, and the pressing mechanism is arranged on one side of the lower die; the edge of the die cavity is additionally provided with a concave cavity, a cylinder is arranged in the concave cavity, so that a semi-finished product with a positioning part at the edge is formed, the positioning part is provided with a positioning hole, the edge of the splicing cavity is provided with a positioning column corresponding to the positioning hole of the semi-finished product, a pressing mechanism presses and acts on the part of the semi-finished product, which is not positioned on the joint surface, and the semi-finished product is spliced into a complete product through high-pressure molding after die assembly. The product is cut into sections and formed by the forming device, and then the semi-finished products are spliced into a whole by high-pressure forming. The invention also discloses a forming method of the negative angle product.
Description
Technical Field
The invention relates to the technical field of automobile part manufacturing, in particular to a negative angle product forming device and a negative angle product forming method.
Background
In recent years, especially in many new energy vehicles, in order to pursue the technological sense of product interior, the design and shape of products are becoming more and more complicated. In the manufacturing process, multiple demolding angles may exist in the same product, and the product cannot be formed at one time, such as products of automobile A, B, C upright posts, decorative pieces on tail doors and the like. GSSF composite board is used in the product, a stamping die is used for production, and a plurality of forming angles are needed due to the negative angle of the product, so that the design difficulty of the die is increased. Aiming at the situation, the oil cylinder and the sliding block are used for assisting in forming at present, the sliding block assists in forming positions, and due to the fact that the forming force of a press is different from the forming force of the sliding block and the machining precision of the sliding block is deviated, the product surface has marks, poor appearance scrapping is caused, in addition, if the sliding block does not return to the mold opening, the mold is damaged, and the maintenance cost of the mold is increased.
Disclosure of Invention
The invention aims to provide a negative angle product forming device, which aims at solving the problems, reduces the difficulty of mould design, improves the positioning precision, avoids damaging the surface of a product and ensures the forming quality of the product.
The invention also aims to provide a negative angle product forming method, which reduces the forming difficulty of the negative angle product, reduces the equipment and personnel investment and improves the product forming quality.
In order to achieve the purpose, the invention adopts the following technical scheme:
a negative angle product forming device comprises a lower die, an upper die and a pressing mechanism, wherein die cavities for dividing parts in different die opening directions in a negative angle product to form a plurality of semi-finished products in a blocking mode are arranged on the lower die and the upper die, a splicing cavity for splicing and combining the semi-finished products in the die cavities in advance is reserved, splicing edges of the semi-finished products in the splicing cavity are designed on a die joint surface, and the pressing mechanism is arranged on one side of the lower die; the edge of the die cavity is additionally provided with a concave cavity, a cylinder is arranged in the concave cavity, so that a semi-finished product with a positioning part at the edge is formed, the positioning part is provided with a positioning hole, the edge of the splicing cavity is provided with a positioning column corresponding to the positioning hole of the semi-finished product, a pressing mechanism presses and acts on the part of the semi-finished product, which is not positioned on the joint surface, and the semi-finished product is spliced into a complete product through high-pressure molding after die assembly.
In particular, the upper die is provided with a punching edge for removing the redundant positioning part.
Particularly, hold-down mechanism is not higher than the die spotting surface, and it includes cylinder, guide rail, drive actuating block and briquetting, and the drive actuating block slides and sets up on the guide rail, and the piston rod of cylinder links firmly with the drive actuating block, and the briquetting is fixed in on the drive actuating block, and the active surface of briquetting and semi-manufactured profile adaptation.
Particularly, the side surface of the lower die is also provided with a positioning block for limiting the lower part of the semi-finished product in the splicing cavity.
On the other hand, the invention adopts the following technical scheme:
a negative angle product forming method based on the negative angle product forming device comprises the following steps:
1) dividing the negative angle part of the product, forming a plurality of semi-finished products in blocks, and adding a positioning part on the edge of the semi-finished products;
2) pre-splicing and combining the semi-finished products in a splicing die, and carrying out XYZ positioning on the semi-finished products through a positioning column and a positioning block;
3) fixing the semi-finished product by adopting a pressing mechanism;
4) and (4) carrying out die assembly and high-pressure forming, splicing the semi-finished products into complete products, and simultaneously designing a punching knife edge to cut off redundant positioning parts.
In particular, the forming die in step 1) and the splicing die in step 2) are designed on one die.
Particularly, when the pre-splicing combination is carried out in the step 2), the overlapping amount is left between the splicing edges of the semi-finished products.
In particular, the pressing mechanism in step 3) is located below the clamping surface and cooperates with the side surface of the lower mold.
In summary, compared with the prior art, the negative angle product forming device and the negative angle product forming method have the advantages that the negative angle product forming device and the negative angle product forming method are designed to cut and form a product with a negative angle, then the semi-finished products are spliced into a whole through high-pressure forming, in the process, the forming die and the splicing die are designed on the same pair of dies so as to reduce the investment of the dies, the forming press, personnel and the like, and the positioning piece and the pressing mechanism are arranged to ensure the positioning precision of the semi-finished products, so that the position deviation during die assembly is avoided, the quality of the finished products is ensured, the product scrap is reduced, and the product precision is improved.
Drawings
FIG. 1 is a schematic structural diagram of a negative angle product forming apparatus provided by an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a lower die in the negative-angle product molding device according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an upper mold of the negative angle product molding device provided by the embodiment of the invention;
FIG. 4 is a schematic structural diagram of a pressing mechanism in the negative-angle product molding device provided by the embodiment of the invention;
fig. 5 is a schematic product diagram of a negative-angle product forming device provided by an embodiment of the invention.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Referring to fig. 1 to 4, the present embodiment provides a negative angle product forming apparatus, which includes a lower mold 1, an upper mold 2 and a pressing mechanism 3. The present embodiment is described in detail by taking the product shown in fig. 5 as an example, and the product has a bent negative angle portion, and it is difficult to realize one-time mold stripping in the conventional manner.
In the embodiment, the lower die 1 and the upper die 2 are provided with a die cavity 4 for dividing the negative angle product in different die opening directions to form a plurality of semi-finished products in blocks, and a splicing cavity 5 for pre-splicing and combining the semi-finished products in the die cavity 4 is reserved. The product is divided into two parts, the negative angle part is independently formed, and then the negative angle part is spliced with the original part.
It should be noted that the splicing edges of the individual semifinished products in the splicing chamber 5 are designed on the parting plane. In addition, the forming die and the splicing die can be designed on the same pair of dies, so that the investment of the dies, the forming press, the material rest and operators can be reduced, and the production of products can be finished under the condition that the investment of equipment personnel is not increased.
Considering that the semi-finished product is affected by the deviation of the placing position and the pressure of a mold closing mold in the splicing process, the position of the semi-finished product is easy to deviate to cause product scrap, so a concave cavity is additionally arranged at the edge of the mold cavity 4, a cylinder is arranged in the concave cavity, the semi-finished product with a positioning part 13 at the edge is formed, a positioning hole 14 is formed in the positioning part 13, and a positioning column 6 and a positioning block 7 for limiting the lower part of the semi-finished product in the splicing cavity 5 are arranged at the edge of the splicing cavity 5 corresponding to the positioning hole 14 of the semi-finished product. Therefore, the semi-finished products are positioned in the XYZ direction, so that the semi-finished products are accurately positioned on the lower die 1, and the splicing edge is prevented from generating a break difference.
The pressing mechanism 3 presses a portion of the semi-finished product, which is not located on the mold clamping surface, and is disposed on one side of the lower mold 1 and is not higher than the mold clamping surface so as not to interfere with the mold clamping of the upper mold 2. The pressing mechanism 3 comprises a cylinder 8, a guide rail 9, a driving block 10 and a pressing block 11, the driving block 10 is arranged on the guide rail 9 in a sliding mode, a piston rod of the cylinder 8 is fixedly connected with the driving block 10, the pressing block 11 is fixed on the driving block 10, and the action surface of the pressing block 11 is matched with the profile of a semi-finished product. Therefore, the semi-finished product is further fixed, the displacement caused by compression is avoided, and the quality of the finished product is ensured.
And after the die is closed, high-pressure forming is carried out, so that the semi-finished products are spliced into complete products. In addition, the upper die 2 is provided with a punching blade 12 for removing an unnecessary positioning portion 13, thereby obtaining a target product.
In view of the above, the present embodiment further provides a negative angle product forming method based on the negative angle product forming apparatus, which includes the following steps:
step 1) cutting the negative angle part of the product, forming a plurality of semi-finished products in blocks, and adding a positioning part 13 on the edge of the semi-finished products;
step 2) pre-splicing and combining the semi-finished products in a splicing die, and carrying out XYZ positioning on the semi-finished products through a positioning column 6 and a positioning block 7;
step 3) fixing the semi-finished product by adopting a pressing mechanism 3, wherein the pressing mechanism 3 is positioned below the die assembly surface and is matched with the side surface of the lower die 1;
and 4) carrying out die assembly and high-pressure forming, splicing the semi-finished products into complete products, and simultaneously designing a punching blade 12 to cut off redundant positioning parts 13.
Wherein, the forming die in the step 1) and the splicing die in the step 2) are designed on one die.
When the pre-splicing combination is carried out in the step 2), the overlapping amount is left between the splicing edges of the semi-finished products, so that reliable splicing is ensured.
In summary, the negative angle product forming device and the negative angle product forming method are designed to cut and form a product with a negative angle, then the semi-finished products are spliced into a whole by high-pressure forming, in the process, the forming die and the splicing die are designed on the same pair of dies so as to reduce the investment of the dies, the forming press, personnel and the like, and the positioning piece and the pressing mechanism are arranged to ensure the positioning precision of the semi-finished products, so that the position deviation during die assembly is avoided, the quality of the finished products is ensured, the product scrap is reduced, and the product precision is improved.
The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but is capable of various modifications and changes without departing from the spirit and scope of the invention, which are intended to be within the scope of the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A negative angle product forming device is characterized by comprising a lower die, an upper die and a pressing mechanism, wherein die cavities for dividing parts in different die opening directions in a negative angle product to form a plurality of semi-finished products in blocks and a splicing cavity for pre-splicing and combining the semi-finished products in the die cavities are formed in the lower die and the upper die, splicing edges of the semi-finished products in the splicing cavity are designed on a die assembly surface, and the pressing mechanism is arranged on one side of the lower die;
the edge of the die cavity is additionally provided with a concave cavity, a cylinder is arranged in the concave cavity, so that a semi-finished product with a positioning part at the edge is formed, the positioning part is provided with a positioning hole, the edge of the splicing cavity is provided with a positioning column corresponding to the positioning hole of the semi-finished product, the pressing mechanism presses and acts on the part of the semi-finished product, which is not positioned on a joint surface, and the semi-finished product is spliced into a complete product through high-pressure molding after the die is closed.
2. The negative angle product molding apparatus of claim 1, wherein: and the upper die is provided with a punching knife edge used for removing redundant positioning parts.
3. The negative angle product molding apparatus of claim 1, wherein: the pressing mechanism is not higher than a joint surface and comprises an air cylinder, a guide rail, a driving block and a pressing block, the driving block is arranged on the guide rail in a sliding mode, a piston rod of the air cylinder is fixedly connected with the driving block, the pressing block is fixed on the driving block, and an action surface of the pressing block is matched with the semi-finished product profile.
4. The negative angle product molding apparatus of claim 1, wherein: and the side surface of the lower die is also provided with a positioning block for limiting the lower part of the semi-finished product in the splicing cavity.
5. A negative angle product molding method based on the negative angle product molding apparatus according to any one of claims 1 to 4, characterized by comprising the steps of:
1) dividing the negative angle part of the product, forming a plurality of semi-finished products in blocks, and adding a positioning part on the edge of the semi-finished products;
2) pre-splicing and combining the semi-finished products in a splicing die, and carrying out XYZ positioning on the semi-finished products through a positioning column and a positioning block;
3) fixing the semi-finished product by adopting a pressing mechanism;
4) and (4) carrying out die assembly and high-pressure forming, splicing the semi-finished products into complete products, and simultaneously designing a punching knife edge to cut off redundant positioning parts.
6. The method of forming a negative angle product according to claim 5, wherein: the forming die in the step 1) and the splicing die in the step 2) are designed on one die.
7. The method of forming a negative angle product according to claim 5, wherein: when the pre-splicing combination is carried out in the step 2), the overlapping amount is left between the splicing edges of the semi-finished product.
8. The method of forming a negative angle product according to claim 5, wherein: the pressing mechanism in the step 3) is positioned below the die closing surface and is matched with the side surface of the lower die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111120940.0A CN113843351A (en) | 2021-09-24 | 2021-09-24 | Negative angle product forming device and negative angle product forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111120940.0A CN113843351A (en) | 2021-09-24 | 2021-09-24 | Negative angle product forming device and negative angle product forming method |
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| Publication Number | Publication Date |
|---|---|
| CN113843351A true CN113843351A (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111120940.0A Pending CN113843351A (en) | 2021-09-24 | 2021-09-24 | Negative angle product forming device and negative angle product forming method |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202241416U (en) * | 2011-09-10 | 2012-05-30 | 无锡吉兴汽车声学部件科技有限公司 | Positioning and pressing jig for water cutting on automobile skylight sun-shading board |
| JP2013078777A (en) * | 2011-10-03 | 2013-05-02 | Hirotec Corp | Press die |
| JP2019098343A (en) * | 2017-11-28 | 2019-06-24 | 三菱自動車工業株式会社 | Press working device |
| CN110919965A (en) * | 2020-02-13 | 2020-03-27 | 宁波方正汽车模具股份有限公司 | Automobile front and rear door attached wood mechanism |
| CN111167946A (en) * | 2020-01-07 | 2020-05-19 | 广州敏实汽车零部件有限公司 | Integral skylight forming die and forming process thereof |
| CN212666518U (en) * | 2020-06-01 | 2021-03-09 | 无锡吉兴汽车声学部件科技有限公司 | Pneumatic shape-following frame pressing mechanism for large-drop profile mold |
| CN112720996A (en) * | 2020-12-15 | 2021-04-30 | 无锡吉兴汽车声学部件科技有限公司 | Compression molding method for ornament on tail door |
| CN213496002U (en) * | 2020-09-09 | 2021-06-22 | 无锡吉兴汽车部件有限公司 | Vehicle vent-pipe separates heat exchanger turn-ups module |
| CN214078818U (en) * | 2020-10-30 | 2021-08-31 | 青岛拓普斯智能科技有限公司 | Novel structure for rotary riveting and dislocation prevention of drum bottom of inner drum of rotary drum washing machine |
-
2021
- 2021-09-24 CN CN202111120940.0A patent/CN113843351A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202241416U (en) * | 2011-09-10 | 2012-05-30 | 无锡吉兴汽车声学部件科技有限公司 | Positioning and pressing jig for water cutting on automobile skylight sun-shading board |
| JP2013078777A (en) * | 2011-10-03 | 2013-05-02 | Hirotec Corp | Press die |
| JP2019098343A (en) * | 2017-11-28 | 2019-06-24 | 三菱自動車工業株式会社 | Press working device |
| CN111167946A (en) * | 2020-01-07 | 2020-05-19 | 广州敏实汽车零部件有限公司 | Integral skylight forming die and forming process thereof |
| CN110919965A (en) * | 2020-02-13 | 2020-03-27 | 宁波方正汽车模具股份有限公司 | Automobile front and rear door attached wood mechanism |
| CN212666518U (en) * | 2020-06-01 | 2021-03-09 | 无锡吉兴汽车声学部件科技有限公司 | Pneumatic shape-following frame pressing mechanism for large-drop profile mold |
| CN213496002U (en) * | 2020-09-09 | 2021-06-22 | 无锡吉兴汽车部件有限公司 | Vehicle vent-pipe separates heat exchanger turn-ups module |
| CN214078818U (en) * | 2020-10-30 | 2021-08-31 | 青岛拓普斯智能科技有限公司 | Novel structure for rotary riveting and dislocation prevention of drum bottom of inner drum of rotary drum washing machine |
| CN112720996A (en) * | 2020-12-15 | 2021-04-30 | 无锡吉兴汽车声学部件科技有限公司 | Compression molding method for ornament on tail door |
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