CN210586743U - Support flanging hole flanging tool - Google Patents
Support flanging hole flanging tool Download PDFInfo
- Publication number
- CN210586743U CN210586743U CN201921601282.5U CN201921601282U CN210586743U CN 210586743 U CN210586743 U CN 210586743U CN 201921601282 U CN201921601282 U CN 201921601282U CN 210586743 U CN210586743 U CN 210586743U
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- Prior art keywords
- hole
- flanging
- plate
- support
- hole flanging
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000000463 material Substances 0.000 claims abstract description 25
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 21
- 238000007599 discharging Methods 0.000 claims description 14
- 230000008093 supporting effect Effects 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009977 dual effect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 238000004080 punching Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000010923 batch production Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model discloses a two technologies of turn-ups hole flanging are realized to one set of mould, and production efficiency is high. The utility model discloses a support turn-ups hole flanging frock, the hole flanging drift that sets up on the lower bolster realizes carrying out the hole flanging operation to half and half finished sheet material, and the ring channel that the hole flanging drift and turn-ups die surround carries out the turn-ups operation to half and half finished sheet material, realizes that the turn-ups of support and hole flanging combine together, and the cost is reduced has improved production efficiency, has also guaranteed the relative position precision of the hole flanging and the turn-ups of support simultaneously; the material returned on the lower template combines together with the nitrogen spring, and the flitch that takes off of cope match-plate pattern combines together with the spring, realizes the support effect of droing, and dual material of taking off can be more convenient.
Description
Technical Field
The utility model belongs to the technical field of the mould, specifically speaking relates to a support turn-ups hole flanging frock.
Background
Hole flanging refers to flanging the edge of a hole into a vertical edge, and is one of flanging; the flanging refers to a forming method of forming a straight wall or a flange with a certain angle along a closed or unclosed curve edge on a plane part or a curved part of a plate by using the action of a die, and the flanging is one of stamping processes.
In the existing production process, a flanging process needs to be carried out on a semi-finished plate, the edge of the semi-finished plate is turned over, and then a hole flanging process is carried out, and a flanging die and a hole flanging die are used for carrying out flanging and hole flanging in sequence to finish the processing of the support;
the above production method has the following disadvantages: (1) the number of required molds is large, and the cost is increased; (2) the production efficiency is low, and the requirement of batch production cannot be met; (3) the relative position precision of the flanging hole and the flanging of the bracket is difficult to ensure.
Disclosure of Invention
The utility model aims at providing a support turn-ups hole flanging frock, it is with low costs, one set of mould realizes two technologies of turn-ups hole flanging, and production efficiency is high.
In order to solve the technical problem, the purpose of the utility model is to realize like this:
a support flanging hole flanging tool comprises a lower template and an upper template, wherein a guide pillar is fixed on the lower template, a guide sleeve for guiding and inserting is fixed on the upper template, corresponding limiting columns are fixed on the upper template and the lower template, a first lower padding plate is fixed on the upper surface of the lower template, and two nitrogen springs are arranged on the first lower padding plate; a second lower base plate is fixed on the upper surface of the first lower base plate, a concave pit is formed in the upper surface of the second lower base plate, and a first through hole is formed in the middle of the pit; a piston rod of the nitrogen spring penetrates through the concave pit; a third lower base plate is fixed on the upper surface of the second lower base plate, a second through hole is formed in the third lower base plate, and the length and width of the second through hole are equal to those of the concave pit; the hole flanging punch comprises a hole flanging punch backing plate, a hole flanging punch and a material returning block; the material returning block comprises a bearing body, the bearing body is cuboid, the top end face of the bearing body is flat, the bottom of the bearing body extends outwards to form a filling block for filling the second through hole, and a piston rod of the nitrogen spring presses the filling block; a third through hole is formed in the supporting body in a penetrating mode, the hole flanging punch backing plate and the hole flanging punch are arranged in the third through hole, and the hole flanging punch backing plate is arranged in the first through hole and fixedly connected with the first lower backing plate; the hole flanging punch is fixedly connected with the top of the hole flanging punch base plate, and the hole flanging punch protrudes out of the material withdrawing block; a flanging female die is fixed on the upper surface of the third lower base plate, a fourth through hole is formed in the flanging female die, the top of the material returning block is sleeved with the fourth through hole of the flanging female die, the lower surface of the flanging female die is used for blocking the filling block, and a flanging punch and the flanging female die are encircled to form an annular groove for conveniently completing the support; a positioning plate is fixed on the upper surface of the flanging female die, a fifth through hole is formed in the positioning plate, the size of the fifth through hole is larger than that of the fourth through hole, the fifth through hole is used for limiting the support, and the support is placed on the upper surface of the flanging female die; an upper spring is fixed on the upper template, a first upper backing plate is fixed on the lower surface of the upper template, the upper spring penetrates through the first upper backing plate, and an inner guide pillar and a discharging screw are fixed on the first upper backing plate; a second upper base plate is fixed on the lower surface of the first upper base plate, a sixth through hole is formed in the middle of the second upper base plate, an upper spring and an inner guide pillar penetrate through the second upper base plate, and a discharging screw penetrates through the sixth through hole; a male die is arranged in the sixth channel, a discharging screw penetrates through the male die, the upper surface of the male die is sunken to form a forming pit for inserting a hole flanging punch, the forming pit is used for completing hole flanging of the support, and the male die is inserted into the annular groove and used for flanging the support; the lower surface of the second upper backing plate is provided with a stripper plate, the inner guide pillar penetrates through the stripper plate, the stripper plate is pressed by the upper spring, a seventh through hole is formed in the middle of the stripper plate, the edge of the seventh through hole is turned downwards to form a hem, the inner surface of the hem is attached to the outer surface of the male die, and the hem is used for being inserted into the fifth through hole of the positioning plate to press the support to fall off.
On the basis of the above scheme and as a preferable scheme of the scheme: the outer sleeve of the nitrogen spring is embedded into the first lower cushion plate to form fixation, and the two nitrogen springs are arranged on the diagonal line of the concave pit.
On the basis of the above scheme and as a preferable scheme of the scheme: the eight upper springs are embedded into the upper die plate to form fixation, and two upper springs respectively surround a square.
On the basis of the above scheme and as a preferable scheme of the scheme: four inner guide posts are arranged around the eight upper springs respectively, and the four inner guide posts are connected into a square.
On the basis of the above scheme and as a preferable scheme of the scheme: the number of the discharging screws is four, and the four discharging screws are connected into a square.
On the basis of the above scheme and as a preferable scheme of the scheme: the shape of the forming pit is oval; the bottom of the hole flanging punch is in a step shape.
On the basis of the above scheme and as a preferable scheme of the scheme: the lower die plate, the first lower backing plate, the second lower backing plate, the third lower backing plate, the flanging female die and the positioning plate are connected through bolts.
Compared with the prior art, the utility model outstanding and profitable technological effect is:
the utility model discloses a support turn-ups hole flanging frock, the hole flanging drift that sets up on the lower bolster realizes carrying out the hole flanging operation to half and half finished sheet material, and the ring channel that the hole flanging drift and turn-ups die surround carries out the turn-ups operation to half and half finished sheet material, realizes that the turn-ups of support and hole flanging combine together, and the cost is reduced has improved production efficiency, has also guaranteed the relative position precision of the hole flanging and the turn-ups of support simultaneously;
the material returned on the lower template combines together with the nitrogen spring, and the flitch that takes off of cope match-plate pattern combines together with the spring, realizes the support effect of droing, and dual material of taking off can be more convenient.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic overall sectional view of the present invention.
Fig. 3 is a schematic view of the overall separation structure of the present invention.
Fig. 4 is a partial structural schematic diagram of fig. 3.
Fig. 5 is a schematic diagram of the exploded structure of fig. 4.
Fig. 6 is a schematic view of the overall structure of fig. 3.
Fig. 7 is a schematic diagram of the exploded structure of fig. 6.
FIG. 8 is a schematic view of the structure of a semifinished sheet.
Fig. 9 is a schematic view of the overall structure of the stent.
Reference numerals: the device comprises a lower template 01, a guide post 010, a limiting post 011, an upper template 02, a guide sleeve 020, an upper spring 021, a first lower backing plate 03, a nitrogen spring 030, a second lower backing plate 04, a pit 040, a first through hole 0400, a third lower backing plate 05, a second through hole 050, a hole flanging punch backing plate 06, a hole flanging punch 07, a material returning block 08, a bearing body 080, a third through hole 0800, a filling block 081, a flanging female die 09, a fourth through hole 090, an annular groove 091, a positioning plate 10, a fifth through hole 100, a first upper backing plate 11, an inner guide post 110, a discharging screw 111, a second upper backing plate 12, a sixth through hole 120, a male die 13, a forming pit 130, a stripper plate 14, a seventh through hole 140, a flanging 141 and a bracket 15;
Detailed Description
The present invention will be further described with reference to the following detailed description;
the embodiment provides a flanging and hole flanging tool for a support 15, which comprises a lower template 01 and an upper template 02, wherein a guide pillar 010 is fixed on the lower template 01, a guide sleeve 020 for guiding and inserting is fixed on the upper template 02, and corresponding limiting pillars 011 are fixed on both the upper template 02 and the lower template 01; the lower die plate 01 is used for being fixed on a punching machine to realize downward pressing and punching, and the guide pillar 010 is matched with the guide bar to realize orientation, so that the punching is convenient; the limiting column 011 is used for ensuring the limiting of the upper template 02 and the lower template 01 and avoiding the damage of the die caused by excessive downward stamping of the upper template 02;
a first lower backing plate 03 is fixed on the upper surface of the lower template 01, and the first lower backing plate 03 is connected with the lower template 01 through bolts so as to be convenient to disassemble and assemble; the first lower cushion plate 03 is provided with two nitrogen springs 030, and the nitrogen springs 030 are in the prior art and are not described again;
a second lower backing plate 04 is fixed on the upper surface of the first lower backing plate 03, the first lower backing plate 03 and the second lower backing plate 04 are connected through bolts so as to be convenient to disassemble and assemble, a concave pit 040 is formed in the upper surface of the second lower backing plate 04, the pit 040 is square, a first through hole 0400 is formed in the middle of the pit 040, and the first through hole 0400 is oval; a piston rod of the nitrogen spring 030 penetrates through the pit 040; a third lower backing plate 05 is fixed on the upper surface of the second lower backing plate 04, a second through hole 050 is formed in the third lower backing plate 05, the second through hole 050 is also square and corresponds to the pit 040, and the length and width of the second through hole 050 are equal to those of the pit 040; the square shape is convenient to process;
the punching machine also comprises a hole flanging punch 07 backing plate 06, a hole flanging punch 07 and a material returning block 08; the material returning block 08 comprises a bearing body 080, the bearing body 080 is cuboid, the top end face of the bearing body 080 is flat, and the support 15 is turned over conveniently, so that the support 15 is in more flat transition; the bottom of the bearing body 080 extends outwards to form a filling block 081 filled in the second through hole 050, the filling block 081 is in a cube shape and matched with the concave pit 040, a piston rod of the nitrogen spring 030 presses the filling block 081, and the cube filling block 081 is stressed more uniformly;
a third through hole 0800 is formed in the bearing body 080, the hole flanging punch 07 backing plate 06 and the hole flanging punch 07 are arranged in the third through hole 0800, the hole flanging punch 07 backing plate 06 is arranged in the first through hole 0400 and is fixedly connected with the first lower backing plate 03, and the hole flanging punch 07 backing plate 06 and the first lower backing plate are connected through bolts so as to be convenient to detach; the hole flanging punch 07 is fixedly connected with the top of a backing plate 06 of the hole flanging punch 07, and the hole flanging punch 07 protrudes out of a material withdrawing block 08;
a flanging female die 09 is fixed on the upper surface of the third lower cushion plate 05, a fourth through hole 090 is formed in the flanging female die 09, the fourth through hole 090 of the flanging female die 09 is sleeved on the top of the material returning block 08, the lower surface of the flanging female die 09 is used for blocking a filling block 081 and preventing the material returning block 08 from being punched out during resetting, a flanging punch 07 and the flanging female die 09 surround to form an annular groove 091 for conveniently completing the support 15, the semi-finished plate is flanged in the annular groove 091, and the flat edge of the semi-finished plate is bent in a folding manner; a positioning plate 10 is fixed on the upper surface of the flanging female die 09, a fifth through hole 100 is formed in the positioning plate 10, the size of the fifth through hole 100 is larger than that of the fourth through hole 090, the fifth through hole 100 is used for limiting a support 15, and the support 15 is placed on the upper surface of the flanging female die 09;
an upper spring 021 is fixed on the upper template 02, a first upper cushion plate 11 is fixed on the lower surface of the upper template 02, the upper template 02 is connected with the first upper cushion plate 11 through bolts, the upper spring 021 penetrates through the first upper cushion plate 11, an inner guide pillar 110010 and a discharge screw 111 wire are fixed on the first upper cushion plate 11, and the inner guide pillar 110010 and the discharge screw 111 wire are embedded into the first upper cushion plate 11 to be fixed; a second upper backing plate 12 is fixed on the lower surface of the first upper backing plate 11, the second upper backing plate 12 is in bolted connection with the first upper backing plate 11 so as to be convenient to disassemble and assemble, a sixth through hole 120 is formed in the middle of the second upper backing plate 12, an upper spring 021 and an inner guide post 110010 penetrate through the second upper backing plate 12, and a discharge screw 111 passes through the sixth through hole 120; a male die 13 is arranged in the sixth passage, a discharging screw 111 penetrates through the male die 13, the upper surface of the male die 13 is recessed to form a forming pit 130 for inserting a hole flanging punch 07, the forming pit 130 is used for completing hole flanging of the support 15, and the male die 13 is inserted into an annular groove 091 for flanging the support 15; the lower surface of the second upper backing plate 12 is provided with a stripper plate 14, the inner guide post 110010 penetrates through the stripper plate 14, the upper spring 021 presses the stripper plate 14, the middle of the stripper plate 14 is provided with a seventh through hole 140, the edge of the seventh through hole 140 is turned over downwards to form a folded edge 141, the inner surface of the folded edge 141 is attached to the outer surface of the male die 13, and the folded edge 141 is used for inserting into the fifth through hole 100 of the positioning plate 10 to push the support 15 to fall off;
the operation process is as follows: the semi-finished plate is placed on the flanging female die 09 and is limited in the fifth through hole 100, the upper die plate 02 moves downwards, the male die 13 extrudes the plate, the edge of the plate is extruded into the annular groove 091 and is bent, and flanging is completed; the male die 13 continues to move downwards, the hole flanging punch 07 extrudes a hole in the middle of the semi-finished plate material, and the hole flanging punch is turned upwards to realize hole flanging; after punching is completed, the upper die plate 02 moves upwards, the upper spring 021 is unfolded and reset, the stripper plate 14 is pressed, the folded edge 141 on the stripper plate 14 is pressed, and the folded edge 141 moves downwards to push the folded edge of the bracket 15 downwards for stripping; the nitrogen spring 030 resets to push the material returning block 08, and the material returning block 08 pushes the support 15, so that the support 15 can be more conveniently taken off.
Further, an outer sleeve of the nitrogen spring 030 is embedded into the first lower backing plate 03 to be fixed, and the two nitrogen springs 030 are arranged on the diagonal line of the pit 040; the two nitrogen springs 030 are arranged on the diagonal line of the pits 040, so that the supporting effect on the filling blocks 081 is better, the supporting points are respectively reasonable, and the stress is uniform;
furthermore, the number of the upper springs 021 is eight, the bottom of the upper springs 021 is embedded into the upper template 02 to be fixed, and the eight upper springs 021 are respectively enclosed into a square by two pairs; the eight upper springs 021 have better supporting effect on the stripper plate 14, the eight fulcrums are stressed uniformly, and the reset is smoother;
furthermore, the number of the inner guide posts 110010 is four, the four inner guide posts 110010 are respectively arranged on the periphery of the eight upper springs 021, and the four inner guide posts 110010 are connected into a square; the connecting lines of the four inner guide posts 110010 are square, so that the limit of the second upper cushion plate 12 and the stripper plate 14 is more reasonable;
furthermore, the number of the discharge screws 111 is four, and the four discharge screws 111 are connected into a square; the four discharging screws 111 facilitate the discharging of the formed bracket 15;
further, the shape of the molding pit 130 is an ellipse; the forming pit 130 can make the support 15 hole-flanging to form an oval shape; the bottom of the hole flanging punch 07 is in a step shape; the hole flanging of the stepped hole flanging punch 07 is more convenient;
in the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like refer to the orientation or position relationship shown in the drawings, or the orientation or position relationship that the product of the present invention is usually placed when in use, or the orientation or position relationship that one skilled in the art conventionally understands, and are only for convenience of describing the present invention and simplifying the description, but do not refer to or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (7)
1. The utility model provides a support turn-ups hole flanging frock, includes lower bolster and cope match-plate pattern, fixed guide pillar on the lower bolster is fixed with on the cope match-plate pattern and is used for deriving male guide pin bushing, and the cope match-plate pattern all is fixed with corresponding spacing post, its characterized in that with the lower bolster:
a first lower cushion plate is fixed on the upper surface of the lower template, and two nitrogen springs are arranged on the first lower cushion plate; a second lower base plate is fixed on the upper surface of the first lower base plate, a concave pit is formed in the upper surface of the second lower base plate, and a first through hole is formed in the middle of the pit; a piston rod of the nitrogen spring penetrates through the concave pit; a third lower base plate is fixed on the upper surface of the second lower base plate, a second through hole is formed in the third lower base plate, and the length and width of the second through hole are equal to those of the concave pit; the hole flanging punch comprises a hole flanging punch backing plate, a hole flanging punch and a material returning block; the material returning block comprises a bearing body, the bearing body is cuboid, the top end face of the bearing body is flat, the bottom of the bearing body extends outwards to form a filling block for filling the second through hole, and a piston rod of the nitrogen spring presses the filling block; a third through hole is formed in the supporting body in a penetrating mode, the hole flanging punch backing plate and the hole flanging punch are arranged in the third through hole, and the hole flanging punch backing plate is arranged in the first through hole and fixedly connected with the first lower backing plate; the hole flanging punch is fixedly connected with the top of the hole flanging punch base plate, and the hole flanging punch protrudes out of the material withdrawing block; a flanging female die is fixed on the upper surface of the third lower base plate, a fourth through hole is formed in the flanging female die, the top of the material returning block is sleeved with the fourth through hole of the flanging female die, the lower surface of the flanging female die is used for blocking the filling block, and a flanging punch and the flanging female die are encircled to form an annular groove for conveniently completing the support; a positioning plate is fixed on the upper surface of the flanging female die, a fifth through hole is formed in the positioning plate, the size of the fifth through hole is larger than that of the fourth through hole, the fifth through hole is used for limiting the support, and the support is placed on the upper surface of the flanging female die;
an upper spring is fixed on the upper template, a first upper backing plate is fixed on the lower surface of the upper template, the upper spring penetrates through the first upper backing plate, and an inner guide pillar and a discharging screw are fixed on the first upper backing plate; a second upper base plate is fixed on the lower surface of the first upper base plate, a sixth through hole is formed in the middle of the second upper base plate, an upper spring and an inner guide pillar penetrate through the second upper base plate, and a discharging screw penetrates through the sixth through hole; a male die is arranged in the sixth channel, a discharging screw penetrates through the male die, the upper surface of the male die is sunken to form a forming pit for inserting a hole flanging punch, the forming pit is used for completing hole flanging of the support,
the male die is inserted into the annular groove and used for flanging the bracket; the lower surface of the second upper backing plate is provided with a stripper plate, the inner guide pillar penetrates through the stripper plate, the stripper plate is pressed by the upper spring, a seventh through hole is formed in the middle of the stripper plate, the edge of the seventh through hole is turned downwards to form a hem, the inner surface of the hem is attached to the outer surface of the male die, and the hem is used for being inserted into the fifth through hole of the positioning plate to press the support to fall off.
2. The support flanging hole flanging tool of claim 1, characterized in that: the outer sleeve of the nitrogen spring is embedded into the first lower cushion plate to form fixation, and the two nitrogen springs are arranged on the diagonal line of the concave pit.
3. The support flanging hole flanging tool of claim 1, characterized in that: the eight upper springs are embedded into the upper die plate to form fixation, and two upper springs respectively surround a square.
4. The support flanging hole flanging tool of claim 3, characterized in that: four inner guide posts are arranged around the eight upper springs respectively, and the four inner guide posts are connected into a square.
5. The support flanging hole flanging tool of claim 4, characterized in that: the number of the discharging screws is four, and the four discharging screws are connected into a square.
6. The support flanging hole flanging tool of claim 1, characterized in that: the shape of the forming pit is oval; the bottom of the hole flanging punch is in a step shape.
7. The support flanging hole flanging tool of claim 1, characterized in that: the lower die plate, the first lower backing plate, the second lower backing plate, the third lower backing plate, the flanging female die and the positioning plate are connected through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921601282.5U CN210586743U (en) | 2019-09-25 | 2019-09-25 | Support flanging hole flanging tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921601282.5U CN210586743U (en) | 2019-09-25 | 2019-09-25 | Support flanging hole flanging tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210586743U true CN210586743U (en) | 2020-05-22 |
Family
ID=70718592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921601282.5U Expired - Fee Related CN210586743U (en) | 2019-09-25 | 2019-09-25 | Support flanging hole flanging tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210586743U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112139327A (en) * | 2020-09-18 | 2020-12-29 | 中国航发贵州黎阳航空动力有限公司 | Machining method and machining device for reverse structure hole |
| CN113680855A (en) * | 2021-08-20 | 2021-11-23 | 东风汽车股份有限公司 | Buckle side limit type bending structure |
| CN113798372A (en) * | 2021-08-26 | 2021-12-17 | 上海兰钧新能源科技有限公司 | Flanging device and method |
| CN116786658A (en) * | 2023-06-14 | 2023-09-22 | 青岛应运汽车零部件有限公司 | Hole flanging positioning technology for blank of thermoforming die |
-
2019
- 2019-09-25 CN CN201921601282.5U patent/CN210586743U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112139327A (en) * | 2020-09-18 | 2020-12-29 | 中国航发贵州黎阳航空动力有限公司 | Machining method and machining device for reverse structure hole |
| CN113680855A (en) * | 2021-08-20 | 2021-11-23 | 东风汽车股份有限公司 | Buckle side limit type bending structure |
| CN113798372A (en) * | 2021-08-26 | 2021-12-17 | 上海兰钧新能源科技有限公司 | Flanging device and method |
| CN113798372B (en) * | 2021-08-26 | 2024-05-31 | 上海兰钧新能源科技有限公司 | Flanging device and flanging method |
| CN116786658A (en) * | 2023-06-14 | 2023-09-22 | 青岛应运汽车零部件有限公司 | Hole flanging positioning technology for blank of thermoforming die |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200522 |
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| CF01 | Termination of patent right due to non-payment of annual fee |