CN106216470A - In a kind of part, hole flanging and straight flange turn over the one-shot forming apparatus of sharp edge - Google Patents
In a kind of part, hole flanging and straight flange turn over the one-shot forming apparatus of sharp edge Download PDFInfo
- Publication number
- CN106216470A CN106216470A CN201610647278.7A CN201610647278A CN106216470A CN 106216470 A CN106216470 A CN 106216470A CN 201610647278 A CN201610647278 A CN 201610647278A CN 106216470 A CN106216470 A CN 106216470A
- Authority
- CN
- China
- Prior art keywords
- revolving die
- drive block
- sharp edge
- turn over
- workpiece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
- B21D19/088—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws for flanging holes
-
- 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
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Forging (AREA)
Abstract
In a kind of part, hole flanging and straight flange turn over the one-shot forming apparatus of sharp edge, and revolving die is arranged on base by revolving die support, process revolving die the first contact surface and install revolving die profiled member on the left of revolving die, mould pushing block in installing in the middle of revolving die, for work portion on the right side of it；Installing on the left of upper mold and turn over sharp edge shaping mould, middle part connects pressing plate by gas spring, and the right side straight drive block of installation mates with flat drive block, and external mold is installed on the left side of flat drive block；Workpiece is placed on workpiece positioning table, and inside workpiece installs interior mould.During work, down, workpiece fixed by pressing plate to upper mold, turns over sharp edge shaping mould down, flat drive block is turned left when pushing away by the most straight drive block, first drive revolving die to rotate, make to turn over sharp edge molding simultaneously, shift interior mould onto position, upper mold is down, external mold head enters in workpiece initial apertures, then by the effect of external mold forming part with interior mold forming portion, hole flanging in molding.Use the aggregate motion overpaying mould, make the workpiece disposal molding of complexity, it is ensured that quality, improve efficiency.
Description
Technical field
The present invention relates to decompressor, particularly relate to hole flanging and straight flange in a kind of part and turn over the one-shot forming dress of sharp edge
Put.
Background technology
At present, due to the low cost of stamping products, more and more universal along with the application of punch press both at home and abroad, carrying of punching precision
Height, has many products to be produced by the punching press of punch press, and the workpiece of many of which complicated shape produces also by punching press, raw
Producing producer is the precision improving product, reduces the production cost of product, sufficiently improves mould.
In a kind of part that the present invention mentions, hole flanging and straight flange turn over the one-shot forming apparatus of sharp edge by common mould
Cannot realize, present stage produces at least through post forming (hole flanging in punching press for the first time, straight flange turns over sharp edge for the second time)
Realize hole flanging and straight flange in part and turn over the one-shot forming of sharp edge, due to the multiple bearing of product, cause the change of positioning datum,
The precision that there is product is the highest, and increasing along with processor, causes production cost to be greatly improved simultaneously.The present invention is by using
Overpay the aggregate motion of mould, make the workpiece disposal molding of complexity, it is ensured that quality, improve efficiency.
Summary of the invention
For weak point present in the problems referred to above, in the present invention provides a kind of part, hole flanging turns over sharp edge with straight flange
One-shot forming apparatus.
For achieving the above object, the present invention provides hole flanging and straight flange in a kind of part to turn over the one-shot forming apparatus of sharp edge,
Including:
Base, the left side installation position-limited rack of described base, revolving die support, described revolving die are installed in the middle part of described base
By rotating shaft, revolving die is installed on support；
Left side processing revolving die first contact surface of described revolving die, the left upper of described revolving die is bolted revolving die
Type part, the middle part of described revolving die is by mould pushing block in bolt installation, the right side processing forced section of described revolving die；
Turn over sharp edge shaping mould, described in turn over sharp edge shaping mould to be arranged on the left side of upper mold right with the left side of described revolving die
Should；
Pressing plate, described pressing plate is arranged on the centre of described upper mold by gas spring；
Straight drive block, described straight drive block is arranged on the right side of described upper mold, corresponding position peace below described straight drive block
Filling flat drive block, described straight drive block bottom processes straight drive block work surface, and the right side of described flat drive block processes flat drive block
Work surface, the left side processing external mold of described flat drive block, the interconnection function portion, bottom of described flat drive block (16) and described revolving die
(4) right side forced section coupling；
Workpiece positioning table is arranged on the centre of described upper mold and described base, is connected with described base by support, described
Workpiece is placed on workpiece positioning table；
Interior mould, described interior mould is arranged on below described workpiece positioning table.
Improve further as the present invention, described revolving die the first contact surface be shaped as arc-shaped.
Improve further as the present invention, the right side processing pushing block contact site of described interior mould pushing block, described pushing block contact site
Profile be arc-shaped.
Improving further as the present invention, the right lower quadrant of described revolving die installs revolving die back-moving spring.
Improving further as the present invention, the installed below flat drive block resetting-mechanism of described flat drive block, described putting down is driven
Motion block resetting-mechanism includes the oat tail groove structure for guiding and for the back-moving spring resetted.
Improving further as the present invention, described external mold includes external mold head and external mold forming part, between rounding off.
Improving further as the present invention, described external mold head is frustum, and the end diameter of described frustum is less than described
The diameter of the workpiece initial apertures of workpiece, described external mold forming part is cylindric, described columned diameter and Workpiece shaping metapore
Diameter consistent.
Improve further as the present invention, the installed below interior mould resetting-mechanism of described interior mould, described interior mould resetting-mechanism
Including the oat tail groove structure for guiding and for the back-moving spring resetted.
Improve further as the present invention, mold forming portion and interior mold forming hole in the right side processing of described interior mould.
Improving further as the present invention, the diameter in described interior mold forming hole is more than the diameter of described external mold forming part.
The invention have the benefit that
1. overpaied the aggregate motion of mould by employing, make the workpiece disposal molding of complexity, it is ensured that quality, improve effect
Rate.
2. utilizing the abnormity design of revolving die, when making straight drive block promote flat drive block, the lower reaction portion of straight drive block pushes away
The right side forced section of dynamic revolving die, makes revolving die rotate around the axis an angle, revolving die the first forming surface on the left of revolving die and workpiece
The left side contacts, until revolving die profiled member with turn over that sharp edge shaping mould acted on workpiece jointly turn over sharp edge process, lead to simultaneously
In crossing, the motion of mould pushing block, makes interior mould put in place.
3. the designed arc-shaped appearance of revolving die the first forming surface, makes contact submissive, without the power of sudden change when being transitioned into revolving die profiled member, makes
After sharp edge molding, transition is natural, and forming surface is smooth neatly.
4. external mold conical design and with the coordinating of interior mould, the interior hole flanging making workpiece is simple, rationally, the most conveniently stripped.
Accompanying drawing explanation
Fig. 1 is that the front view of the one-shot forming apparatus that hole flanging turns over sharp edge with straight flange is (unformed in a kind of part of the present invention
Before)；
Fig. 2 is the front view (molding of the one-shot forming apparatus that hole flanging and straight flange turn over sharp edge in a kind of part of the present invention
Afterwards)；
Fig. 3 is the enlarged drawing of location A in Fig. 1；
Fig. 4 is the enlarged drawing of B location in Fig. 2；
Fig. 5 is the sectional view before work pieces process；
Fig. 6 is the sectional view after work pieces process.
In figure: 1, base；2, position-limited rack；3, revolving die support；4, revolving die；5, revolving die the first contact surface；6, revolving die profiled member；
7, interior mould pushing block；8, pushing block contact site；9, workpiece positioning table；10, workpiece；11, sharp edge shaping mould is turned over；12, upper mold；13, gas
Body spring；14, pressing plate；15, straight drive block；16, flat drive block；17, flat drive block resetting-mechanism；18, interior mould；19, interior mould is multiple
Position mechanism；20, revolving die back-moving spring；21, straight drive block work surface；22, flat drive block work surface；23, external mold head；24, outer
Mold forming portion；25, interior mold forming portion；26, interior mold forming hole；27, workpiece initial apertures；28, Workpiece shaping metapore.
Detailed description of the invention
As shown in Figure 1-2, in a kind of part described in the embodiment of the present invention, hole flanging and straight flange turn over the one-shot forming of sharp edge
Device, including: base 1, position-limited rack 2 is installed in the left side of this base 1, it is achieved the control to revolving die rotational angle.The centre of base 1
Revolving die support 3 is installed at position, and revolving die support 3 installs revolving die 4 by rotating shaft；Left side processing revolving die first contact surface of revolving die 4
5, revolving die the first contact surface 5 be shaped as arc-shaped, make revolving die submissive with absorption surface.The left upper of revolving die 4 passes through bolt
Connect revolving die profiled member 6, by the flexible connection of bolt, conveniently repair a die and change.The middle part of revolving die 4 is installed by bolt
Interior mould pushing block 7, the right side processing pushing block contact site 8 of interior mould pushing block 7, the profile of described pushing block contact site 8 is arc-shaped.Work as revolving die
During rotation, pushed away the left side of interior mould by the contact site of arc-shaped.The right side processing forced section of revolving die 4, the right lower quadrant of revolving die 4 is installed
Revolving die back-moving spring 20, for the reset of revolving die.Turn over sharp edge shaping mould 11 and be arranged on the left side of upper mold 12 and the left side of revolving die 4
Corresponding；Pressing plate 14 is arranged on the centre of upper mold 12 by gas spring 13, it is achieved the flexible location to workpiece.Straight drive block 15 is pacified
Being contained in the right side of upper mold 12, below straight drive block 15, flat drive block 16 is installed in corresponding position, and the processing of straight drive block 15 bottom is directly driven
Motion block work surface 21, the right side of flat drive block processes flat drive block work surface 22, when straight drive block down time, by straight drive block
Work surface 21 extrudes flat drive block work surface 22, makes flat drive block turn left horizontal movement.The bottom interconnection function of flat drive block 16
Portion mates with the right side forced section of revolving die 4, when flat drive block is turned left, by the forced section of the push-jump mould of service portion, it is achieved revolving die
Rotation.The installed below flat drive block resetting-mechanism 17 of flat drive block 16, described flat drive block resetting-mechanism 17 include for
The oat tail groove structure guided and the back-moving spring being used for reset.Workpiece positioning table 9 is arranged on the centre of upper mold 12 and base 1, logical
Cross support and be connected (support figure does not represents) with base 1, workpiece positioning table 9 is placed workpiece 10；It is fixed that interior mould 18 is arranged on workpiece
Below the platform 9 of position, the installed below interior mould resetting-mechanism 19 of interior mould 18, interior mould resetting-mechanism 19 includes the dovetail groove for guiding
Structure and the back-moving spring for reset.
As shown in Figure 3-4, the left side processing external mold of described flat drive block 16, external mold includes external mold head 23 and outer mold forming
Portion 24, between rounding off.External mold head 23 is frustum, and the end diameter of frustum is less than the workpiece initial apertures 27 of workpiece 10
Diameter, external mold forming part 24 is cylindric, and columned diameter is consistent with the diameter of Workpiece shaping metapore 28.The right side of interior mould 18
Mold forming portion 25 and interior mold forming hole 26 in processing.The diameter in interior mold forming hole 26 is more than the diameter of external mold forming part 24.
As it is shown in figure 5, be the sectional view before work pieces process.
As shown in Figure 6, for the sectional view after work pieces process.
Overpaied the aggregate motion of mould by employing, make the workpiece disposal molding of complexity, it is ensured that quality, improve efficiency.
Utilizing the abnormity design of revolving die, when making straight drive block promote flat drive block, the lower reaction portion of straight drive block promotes the right side of revolving die
Side forced section, makes revolving die rotate around the axis an angle, and revolving die the first forming surface on the left of revolving die contacts with the left side of workpiece, directly
To revolving die profiled member and the sharp edge process of turning over turning over sharp edge shaping mould and jointly having acted on workpiece, simultaneously by interior mould pushing block
Motion, makes interior mould put in place.The designed arc-shaped appearance of revolving die the first forming surface, makes contact submissive, without suddenling change when being transitioned into revolving die profiled member
Power, make transition after sharp edge molding natural, forming surface is smooth neatly.The conical design of external mold and with the coordinating of interior mould, make work
The interior hole flanging of part is simple, rationally, the most conveniently stripped.
Time specifically used, understand the present invention for convenience, be described stage by stage in conjunction with accompanying drawing；
1. charging stage (seeing Fig. 1), upper mold is positioned at a high position, and straight drive block separates with flat drive block, and flat drive block is at bullet
Being positioned at right side under the effect of spring, revolving die rotates counterclockwise under the effect of revolving die back-moving spring, until the lower left quarter of revolving die is encountered
Position-limited rack；Interior mould is in the left side under the effect of interior mould back-moving spring；Turn over sharp edge shaping mould and pressing plate is located above, now will
Workpiece is placed into workpiece positioning table.
2. punching press first stage (seeing Fig. 1-2), i.e. turns over sharp edge molding and interior mould puts in place, and down, pressing plate is first for upper mold
Encounter workpiece, workpiece is pushed down, now turn over sharp edge shaping mould and down encounter workpiece, by workpiece along turning over sharp edge shaping mould
There is bending in inner side, the most straight drive block encounters flat drive block, and flat drive block is turned left, by being subject to of the following push-jump mould of service portion
Power portion, it is achieved turning clockwise of revolving die, left side revolving die first contact surface of revolving die encounters workpiece, by the left side of workpiece up
Turning over, until turning over sharp edge shaping mould to arrive lowest order, now revolving die profiled member and absorption surface, being finally completed sharp edge molding.
While sharp edge molding, the interior mould pushing block edge on revolving die rotates clockwise, the pushing block contact site on the right side of it and a left side for interior mould
Side contacts, turns right interior mould along horizontal direction and moves, until putting in place.
3. punching press second stage (sees Fig. 1-4), i.e. hole flanging in punch forming, and upper mold continues down, and gas spring compresses,
Workpiece is tightly pushed down by pressing plate.Straight drive block continues to extrude flat drive block, due to service portion and the revolving die of the most flat drive block
Forced section is flat contact, although it has relative motion, revolving die not to rotate, and the external mold in the left side of flat drive block and workpiece
Initial apertures contact, by the guide effect of external mold head, head and the forming part of external mold produce extruding to workpiece, simultaneously because
The supporting role in interior mold forming portion, forms Workpiece shaping metapore (see Fig. 6), and now the head of external mold and forming part are all at interior mould
At forming hole, molding terminates.
4. blanking and reseting stage (seeing Fig. 1), punching press terminates, and upper mold up, drives and turns over sharp edge shaping mould up, pressure
Up, gas spring resets block, and straight drive block is up until separating with flat drive block, and flat drive block is at flat drive block resetting-mechanism
Effect under level turn right motion, external mold disengages with workpiece, and revolving die rotates counterclockwise under the effect of revolving die back-moving spring, until
The lower left quarter of revolving die encounters position-limited rack；Interior mould pushing block is opened with interior mode division, and interior mould level under the effect of interior mould back-moving spring is turned left
Motion, the forming part of interior mould disengages with workpiece, the most just can be taken off from workpiece positioning table by the workpiece processed, wait next
Secondary punching press.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, that is made any repaiies
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. in a part, hole flanging and straight flange turn over the one-shot forming apparatus of sharp edge, it is characterised in that including:
Base (1), left side installation position-limited rack (2) of described base (1), revolving die support is installed in the middle part of described base (1)
(3), described revolving die support (3) installs revolving die (4) by rotating shaft；
Left side processing revolving die the first contact surface (5) of described revolving die (4), the left upper of described revolving die (4) is bolted
Revolving die profiled member (6), interior mould pushing block (7), the right side of described revolving die (4) are installed by bolt in the middle part of described revolving die (4)
Processing forced section；
Turn over sharp edge shaping mould (11), described in turn over sharp edge shaping mould (11) be arranged on the left side of described upper mold (12) with described turn
The left side of mould (4) is corresponding；
Pressing plate (14), described pressing plate (14) is arranged on the centre of described upper mold (12) by gas spring (13)；
Straight drive block (15), described straight drive block (15) is arranged on the right side of described upper mold (12), described straight drive block (15)
Flat drive block (16) is installed in corresponding position below, and described straight drive block (15) bottom processes straight drive block work surface (21), described flat
The right side of drive block processes flat drive block work surface (22), the left side processing external mold of described flat drive block (16), described flat driving
The interconnection function portion, bottom of block (16) mates with the right side forced section of described revolving die (4)；
Workpiece positioning table (9) is arranged on the centre of described upper mold (12) and described base (1), by support and described base (1)
Connect, described workpiece positioning table (9) places workpiece (10)；
Interior mould (18), described interior mould (18) is arranged on below described workpiece positioning table (9).
In a kind of part the most according to claim 1, hole flanging and straight flange turn over the one-shot forming apparatus of sharp edge, and its feature exists
It is shaped as arc-shaped in: described revolving die the first contact surface (5).
In a kind of part the most according to claim 1, hole flanging and straight flange turn over the one-shot forming apparatus of sharp edge, and its feature exists
In: right side processing pushing block contact site (8) of described interior mould pushing block (7), the profile of described pushing block contact site (8) is arc-shaped.
In a kind of part the most according to claim 1, hole flanging and straight flange turn over the one-shot forming apparatus of sharp edge, and its feature exists
In: the right lower quadrant of described revolving die (4) installs revolving die back-moving spring (20).
In a kind of part the most according to claim 1, hole flanging and straight flange turn over the one-shot forming apparatus of sharp edge, and its feature exists
In: the installed below flat drive block resetting-mechanism (17) of described flat drive block (16), described flat drive block resetting-mechanism (17) is wrapped
Include the oat tail groove structure for guiding and for the back-moving spring resetted.
In a kind of part the most according to claim 1, hole flanging and straight flange turn over the one-shot forming apparatus of sharp edge, and its feature exists
In: described external mold includes external mold head (23) and external mold forming part (24), between rounding off.
In a kind of part the most according to claim 6, hole flanging and straight flange turn over the one-shot forming apparatus of sharp edge, and its feature exists
In: described external mold head (23) is frustum, and the end diameter of described frustum is less than the workpiece initial apertures of described workpiece (10)
(27) diameter, described external mold forming part (24) is cylindric, and described columned diameter is straight with Workpiece shaping metapore (28)
Footpath is consistent.
In a kind of part the most according to claim 1, hole flanging and straight flange turn over the one-shot forming apparatus of sharp edge, and its feature exists
In: the installed below interior mould resetting-mechanism (19) of described interior mould (18), described interior mould resetting-mechanism (19) includes for guiding
Oat tail groove structure and the back-moving spring for reset.
In a kind of part the most according to claim 1, hole flanging and straight flange turn over the one-shot forming apparatus of sharp edge, and its feature exists
In: mold forming portion (25) and interior mold forming hole (26) in the right side processing of described interior mould (18).
10. turn over the one-shot forming apparatus of sharp edge according to hole flanging in a kind of part described in claim 7 or 9 and straight flange, it is special
Levy and be: the diameter of described interior mold forming hole (26) is more than the diameter of described external mold forming part (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610647278.7A CN106216470B (en) | 2016-08-08 | 2016-08-08 | Hole flanging turns over the one-shot forming apparatus of sharp edge with straight flange in a kind of part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610647278.7A CN106216470B (en) | 2016-08-08 | 2016-08-08 | Hole flanging turns over the one-shot forming apparatus of sharp edge with straight flange in a kind of part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106216470A true CN106216470A (en) | 2016-12-14 |
| CN106216470B CN106216470B (en) | 2017-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610647278.7A Active CN106216470B (en) | 2016-08-08 | 2016-08-08 | Hole flanging turns over the one-shot forming apparatus of sharp edge with straight flange in a kind of part |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108057755A (en) * | 2017-12-05 | 2018-05-22 | 马鞍山市万鑫铸造有限公司 | A kind of punching press hole-flanging device |
| CN108080459A (en) * | 2017-11-08 | 2018-05-29 | 天津东方奇运汽车制造有限公司 | The acute angle bending tool of thin-walled steel plate |
| CN108380753A (en) * | 2018-04-03 | 2018-08-10 | 浙江炜驰机械集团有限公司 | A kind of disposable compound die of the flange with side punched hole structure twice |
| CN110614311A (en) * | 2019-10-17 | 2019-12-27 | 慈溪市普锐金属制品有限公司 | Punch forming device for television bracket connecting piece |
| CN112828146A (en) * | 2020-12-31 | 2021-05-25 | 广州敏实汽车零部件有限公司 | Progressive die production mechanism for side flanging |
| CN115608828A (en) * | 2022-12-19 | 2023-01-17 | 沧州市三庆工贸有限公司 | Pipe end forming device and process for clamping and pressing pipe fitting |
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| CN108380753B (en) * | 2018-04-03 | 2023-05-09 | 浙江炜驰机械集团股份有限公司 | Disposable twice flanging takes compound die of structure of punching a hole of side |
| CN110614311A (en) * | 2019-10-17 | 2019-12-27 | 慈溪市普锐金属制品有限公司 | Punch forming device for television bracket connecting piece |
| CN112828146A (en) * | 2020-12-31 | 2021-05-25 | 广州敏实汽车零部件有限公司 | Progressive die production mechanism for side flanging |
| CN112828146B (en) * | 2020-12-31 | 2023-03-14 | 广州敏实汽车零部件有限公司 | Progressive die production mechanism for side flanging |
| CN115608828A (en) * | 2022-12-19 | 2023-01-17 | 沧州市三庆工贸有限公司 | Pipe end forming device and process for clamping and pressing pipe fitting |
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| Publication number | Publication date |
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| CN106216470B (en) | 2017-10-31 |
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Address after: 316102 No. 51 Xinchi Road, Donggang Street, Putuo District, Zhoushan City, Zhejiang Province Patentee after: Zhejiang Weichi Machinery Group Co., Ltd. Address before: 316102 No. 51 Xinchi Road, Donggang Street, Putuo District, Zhoushan City, Zhejiang Province Patentee before: Zhejiang Wise Machinery Group Co., Ltd. |
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Denomination of invention: The utility model relates to a one-time forming device for turning inward holes and sharp corners of straight edges of parts Effective date of registration: 20211126 Granted publication date: 20171031 Pledgee: China Construction Bank Corporation Zhoushan Putuo sub branch Pledgor: ZHEJIANG WEICHI MACHINERY GROUP Co.,Ltd. Registration number: Y2021330002370 |
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