CN108480440A - A kind of free curve bending machine of tube diameter variable - Google Patents
A kind of free curve bending machine of tube diameter variable Download PDFInfo
- Publication number
- CN108480440A CN108480440A CN201810394316.1A CN201810394316A CN108480440A CN 108480440 A CN108480440 A CN 108480440A CN 201810394316 A CN201810394316 A CN 201810394316A CN 108480440 A CN108480440 A CN 108480440A
- Authority
- CN
- China
- Prior art keywords
- pipe fitting
- curved
- ring
- tube diameter
- free curve
- 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
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
-
- 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
Abstract
The invention discloses a kind of free curve bending machines of tube diameter variable.Include the bend pipe pushing mechanism being sequentially arranged along pipe fitting transporting direction and guiding mechanism and bending mold mechanism, pipe fitting is through bend pipe pushing mechanism, guiding mechanism and is bent mold mechanism；Horizontal macropore is provided on bending die pedestal; screwed ring is fixedly mounted in the both ends of horizontal macropore; have between the screwed ring at both ends and is equipped with magnet ring in gap and gap; steel end cap is equipped with by thread bush respectively in two screwed rings; curved modular ring is equipped between two steel end caps; curved modular ring circumferential lateral surface is tightly attached to steel end cap surface, and pipe fitting is through curved modular ring center；Mainly by being constituted along multiple curved matrixs of the circumferential arrangement that makes a circle in week of pipe fitting, multiple curved matrixs are concatenated after elastic band passes through itself middle part and are constituted curved modular ring.The present invention realizes the function that a set of adjustable mold progress 3 D auto bending forming can be used only for the pipe fitting of different tube diameters, saves manufacturing cost, improves manufacture efficiency.
Description
Technical field
The present invention relates to a kind of free curve bending machine of tube diameter variable, more particularly, to a kind of tube diameter variable from
By curve bending machine, which is used for the 3 D auto bending forming of pipe fitting.
Background technology
3 D auto curved super-long structure is an emerging flexible forming process of metal forming field, for realizing
Accurate mouldless shaping of pipe fitting under the conditions of continuous variable curvature.Since oil transportation, gas pipeline caliber are different inside aircraft engine,
And Space Layout Structure is complicated, 3 D auto curved super-long structure has great application prospect in the field.
Existing free curve bending machine, which improves traditional bending machine and needs replacing bending die and could realize, bent bilge radius
The drawbacks of, meet the variable curvature bending forming demand of same caliber pipe fitting under high-volume.But not for fields such as aeronautical manufactures
Single-piece, small lot with caliber pipe fitting manufacture, and still need to the bending machine module for customizing corresponding different size.
Invention content
The purpose of the present invention is overcome the deficiencies of the prior art and provide a kind of free curve bending machine of tube diameter variable.
The technical solution adopted in the present invention is：
The present invention includes the rack-mounted bend pipe pushing mechanism and Guiding machine being sequentially arranged along pipe fitting transporting direction
Structure and bending mold mechanism, rack level arrangement, pipe fitting is through bend pipe pushing mechanism, guiding mechanism and is bent mold mechanism；
The bending mold mechanism includes bending die pedestal, magnet ring, screwed ring, steel end cap, curved matrix and elastic band；
It is provided with horizontal macropore on bending die pedestal, a screwed ring, two screwed rings at both ends are fixedly mounted in the both ends of horizontal macropore
Between there is gap and be equipped with magnet ring in gap, respective steel end is equipped with by thread bush respectively in two screwed rings
Lid, is equipped with curved modular ring between two steel end caps, and curved modular ring circumferential lateral surface is tightly attached to steel end cap surface, and pipe fitting is through curved mould
Ring center；Curved modular ring along multiple curved matrixs of the circumferential arrangement that makes a circle in week of pipe fitting mainly by constituting, and multiple curved matrixs are through elastic band
It concatenates and constitutes behind itself middle part.
The present invention is by rotating the steel end cap being set in two screwed rings, driving two steel end cap phase separations or leaning on
Hold together, adjusts the gap between two steel end caps；Curved matrix is fixed dimension, while increasing or reducing the curved mould in curved modular ring
Piece quantity re-assemblies curved modular ring and curved modular ring circumferential lateral surface is made to be tightly attached to steel end cap surface, while expanding or reducing curved
The pore size that each curved matrix inner end is surrounded in modular ring.
In the present invention, the hole that the inner end of the curved matrix of curved modular ring radially is surrounded is as the perforative free curve of pipe fitting
Bend pipe hole allows curved modular ring to re-assembly and drives free curve bend pipe hole by the curved matrix quantity for increasing or reducing in curved modular ring
Variable-diameter adjustment is carried out, and then realizes tube diameter variable.
Each two corners of the curved matrix along pipe fitting radial outer end side open up chamfering, and two opposite end faces of steel end cap are arranged to
With the lozenges of chamfering cooperation, the bevel edge of curved matrix is close to be bonded the lozenges of steel end cap.
The straight slot passed through for elastic band is offered on each curved matrix.
The screwed ring uses magnetic material, magnet ring to pass through magnetic force and screwed ring connection function.
The guiding mechanism is located between bend pipe pushing mechanism and bending mold mechanism, is pushed to bend pipe pushing mechanism
Pipe fitting is supported and is oriented to.
The guiding mechanism includes two guide seats, bevel pinion and bevel gear wheel, and two guide seats inside are
There are one bevel gear wheels for installation, and two bevel gear wheels of two guide seats are positioned opposite and are provided on the end face faced
Spiral groove is connected between two guide seats along multiple guide pads, and pipe fitting passes through in two guide seats and bevel gear wheel
The through-hole that the heart opens up, multiple guide pads are circumferentially-spaced uniformly distributed along pipe fitting；Guide pad both ends are equipped with the rectangle coordinated with spiral groove
Tooth, rectangular teeth are flush-mounted in spiral groove so that guide pad both ends are connected to bevel gear wheel；Guide pad is towards inside pipe fitting side
Equipped with annular cavity, close installation has steel ball, guide pad to be provided with bar shaped groove, steel ball part towards pipe fitting side in annular cavity
It is connected to pipe fitting after being pierced by bar shaped groove.
The guide seats are equipped with bevel pinion, and bevel pinion engages connection with bevel gear wheel, rotated by small bevel gear
It is dynamic to drive bevel gear wheel rotation, and then drive guide pad along pipe fitting by the drive mechanism that spiral groove and guide pad sawtooth are formed
It moves radially.
The bend pipe pushing mechanism includes claw, chuck base, sprocket wheel, driving shaft, chain, driven shaft and axis of usheing to seat
It holds；Chuck base is equipped with claw, claw clamping pipe fitting, and chuck base is fixedly connected with chain by screw, the chain at chain both ends
Wheel is set on driving shaft and driven shaft, and driving shaft and driven shaft are mounted on rack by rolling bearing units.
The active axis connection motor drives driving shaft rotation by motor, and then drives chuck bottom by chain drive
Seat and moved horizontally by the pipe fitting of claw clamping.
The rack is equipped with slider bar rail, and chuck base bottom is equipped with sliding bar groove, and sliding bar groove is flush-mounted in sliding
Sliding pair is formed in rail.
The present invention is suitable for the 3 D auto bending forming of pipe fitting.By six dog chuck basal sliding bar grooves and housing slide item
Connection, and be fixed on chain by screw, guide seats are secured by bolts in rack, and bending mold mechanism is that reducing is curved
Qu Mo, and being fixed on 6-dof motion platform, is rotated by motor-driven drive sprockets, and drive six dog chucks along pipe fitting it is axial into
It gives, by the curved matrix of motor driving guide pad and six dog chuck claws in pipe fitting radial feed, reducing bending die by elastic force
Band is connected into curved modular ring, and curved modular ring two sides are bonded steel end cap under magneticaction.
The beneficial effects of the invention are as follows：
Using the present invention, position is screwed by the number and adjustment steel end cap and the opposite of screwed ring of the curved matrix of change,
The reducing function of realizing bending die, the change of guiding mechanism and propulsive mechanism is realized by the radial feed of guide pad and claw respectively
Diameter function.
Overall structure of the present invention realize the pipe fitting for different tube diameters can be used only a set of adjustable mold carry out it is three-dimensional from
By the function of bending forming, manufacturing cost is saved, improves manufacture efficiency.
Description of the drawings
Fig. 1 is the schematic diagram of apparatus of the present invention；
Fig. 2 is the structure sectional view of present invention bending mold mechanism；
Fig. 3 is the front view of present invention bending mold mechanism；
Fig. 4 is the state diagram of the reducing adjustment of present invention bending mold mechanism；
Fig. 5 is guide block structure sectional view of the present invention；
Fig. 6 is the structure chart of guide pad of the present invention radially inner face；
Fig. 7 is the enlarged partial sectional view of guiding mechanism structure of the present invention.
In figure, bending die pedestal 1, trip bolt 2, magnet ring 3, screwed ring 4, steel end cap 5, curved matrix 6, elastic band 7,
Guide seats 8, bevel pinion 9, bevel gear wheel 10, bolt 11, rack 12, guide pad 13, steel ball 14, claw 15, chuck base
16, sprocket wheel 17, driving shaft 18, chain 19, screw 20, driven shaft 21, rolling bearing units 22.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and examples.
As shown in Figure 1, present invention specific implementation includes being mounted in rack 12 along what pipe fitting transporting direction was sequentially arranged
Bend pipe pushing mechanism and guiding mechanism and bending mold mechanism, rack 12 is horizontally disposed, pipe fitting through bend pipe pushing mechanism, lead
To mechanism and bending mold mechanism；Pipe fitting is in contact with claw 15, steel ball 14, curved matrix 6 successively by charge order.
As shown in Figures 2 and 3, bending mold mechanism include bending die pedestal 1, it is magnet ring 3, screwed ring 4, steel end cap 5, curved
Matrix 6 and elastic band 7；It is provided with horizontal macropore on bending die pedestal 1, is fixed and is pacified by trip bolt 2 in the both ends of horizontal macropore
A screwed ring 4 is filled, there is gap between two screwed rings 4 at both ends and is equipped with magnet ring 3, two screwed rings 4 in gap
Respective steel end cap 5 is inside equipped with by thread bush respectively, curved modular ring, curved modular ring peripheral side are equipped between two steel end caps 5
5 surface of steel end cap is tightly attached in face, and pipe fitting is through curved modular ring center；Curved modular ring is mainly by along the circumferential arrangement that makes a circle in week of pipe fitting
Multiple curved matrixs 6 constitute, multiple curved matrixs 6 are along the circumferential close arrangement that makes a circle in week of pipe fitting, and multiple curved matrixs 6 are through elastic band 7
It concatenates and constitutes behind itself middle part, form the structure such as a similar annular beading.The quantity of curved matrix 6 makes elastic band 7 concatenate
The curved modular ring formed forms rock-steady structure, not loosely.
Each two corners of the curved matrix 6 along pipe fitting radial outer end side open up chamfering, the opposite end face setting of two steel end caps 5
At the lozenges coordinated with chamfering, the bevel edge of curved matrix 6 is close to be bonded the lozenges of steel end cap 5.Each curved matrix 6 is along pipe
Part radial inner end side is set as circular arc.The straight slot passed through for elastic band 7 is offered on each curved matrix 6.
Screwed ring 4 uses magnetic material, magnet ring 3 to pass through 4 connection function of magnetic force and screwed ring.
Magnet ring 3 is arranged in the present invention between screwed ring 4, curved modular ring can be avoided to topple over during the installation process, keeps curved
Modular ring center line and 5 centerline parallel of steel end cap are convenient for the rotation of steel end cap 5, play auxiliary stopper, installation is complete
Each 6 bevel edge of curved matrix is set to be close to the lozenges of steel end cap 5 under magneticaction afterwards.
Guiding mechanism is located between bend pipe pushing mechanism and bending mold mechanism, the pipe fitting that bend pipe pushing mechanism is pushed into
Row support and guiding.As shown in fig. 7, guiding mechanism includes two guide seats 8, bevel pinion 9 and bevel gear wheel 10, two are led
It is fixedly mounted in rack 12, is respectively mounted inside two guide seats 8 there are one bevel gear wheel by bolt 11 to pedestal 8
10, two bevel gear wheels 10 of two guide seats 8 are positioned opposite and spiral groove, spiral are provided on the end face faced
Groove is the structure of similar flat thread, is connected with along multiple guide pads 13 between two guide seats 8, pipe fitting is led across two
The through-hole opened up to pedestal 8 and 10 center of bevel gear wheel, multiple guide pads 13 are circumferentially-spaced uniformly distributed along pipe fitting；13 both ends of guide pad
Equipped with the rectangular teeth coordinated with spiral groove, rectangular teeth is flush-mounted in spiral groove so that 13 both ends of guide pad are connected to auger
Gear 10；As shown in Figure 5 and Figure 6, guide pad 13 is internally provided with annular cavity towards pipe fitting side, close installation in annular cavity
There are steel ball 14, guide pad 13 to be provided with bar shaped groove towards pipe fitting side, 14 part of steel ball is connected to pipe fitting after being pierced by bar shaped groove.
Annular cavity is in kidney-shaped structure, and the straightway of kidney-shaped structure is parallel to pipe fitting.
8 end face of guide seats is provided with multiple bar-shaped troughs of circumferentially spaced arrangement, and each bar-shaped trough is radially arranged, is oriented to
13 both ends of block form mobile guide flush-mounted in the bar-shaped trough of guide seats 8.The both sides at both ends of guide pad 13 open up
Strip slot so that 13 end of guide pad forms both sides cord tissue, and both sides cord tissue is flush-mounted in bar-shaped trough.
Guide seats 8 are equipped with bevel pinion 9, and bevel pinion 9 engages connection with bevel gear wheel 10, by 9 turns of bevel pinion
It is dynamic that bevel gear wheel 10 is driven to rotate, and then guide pad 13 is driven by the drive mechanism that spiral groove and 13 sawtooth of guide pad are formed
It is moved radially along pipe fitting.
As shown in Figure 1, bend pipe pushing mechanism include claw 15, chuck base 16, sprocket wheel 17, driving shaft 18, chain 19, from
Moving axis 21 and rolling bearing units 22；Chuck base 16 is equipped with claw 15, and 15 clamping pipe fitting of claw, chuck base 16 and chain 19 pass through
Screw 20 is fixedly connected, and the sprocket wheel 17 at 19 both ends of chain is set on driving shaft 18 and driven shaft 21, driving shaft 18 and from
Moving axis 21 is mounted on rack 12 by rolling bearing units 22.
Driving shaft 18 connects motor, drives driving shaft 18 to rotate by motor, and then drive chuck base by chain drive
It 16 and is moved horizontally by the pipe fitting of 15 clamping of claw.
Rack 12 is equipped with slider bar rail, and 16 bottom of chuck base is equipped with sliding bar groove, and sliding bar groove is flush-mounted in slider bar
Sliding pair is formed in rail, and the movement of chuck base 16 is oriented to.
The implementation process of the present invention is as follows：
1) as shown in figure 4, according to the required pipe fitting overall diameter bent, the steel end cap being set in two screwed rings 4 is rotated
5, the position that screws of adjustment steel end cap 5 and screwed ring 4 drives two phase separations of steel end cap 5 or draws close, adjusts two steel
6 quantity of curved matrix in curved modular ring is changed in gap between end cap 5 processed, is re-assemblied curved modular ring and is made curved modular ring circumferential lateral surface
It is tightly attached to 5 surface of steel end cap, the bevel edge of each curved matrix 6 is specifically allowed to be close to be bonded the lozenges of steel end cap 5.Simultaneously
So that the pore size that each 6 inner end of curved matrix is surrounded in curved modular ring changes, and suitable for straight outside the required pipe fitting bent
Diameter completes variable-diameter adjustment.
2) guiding mechanism works, and is synchronized and is drivingly connected in the bevel pinion 9 of two guide seats 8 by two motors, drives big
Bevel gear 17 rotates, and to drive the guide pad 13 of 17 spiral groove of embedded bevel gear wheel along pipe fitting radial feed, is pressed in pipe
Part surface.
3) bend pipe pushing mechanism works, and is turned round by motor driving driving shaft 18, and drive chuck base 16 along pipe fitting axial direction
Feeding is drivingly connected in the bevel pinion 9 of chuck base 16 by motor, bevel gear wheel 17 is driven to rotate, embedded big to drive
The claw 15 of 17 helicla flute of bevel gear is along pipe fitting radial feed.
4) it works simultaneously in guiding mechanism and bend pipe pushing mechanism, bending mold mechanism is fixed on 6-dof motion platform
On, bending mold mechanism movement is driven by 6-dof motion platform so that buckling work is carried out on demand to pipe fitting.
Claims (10)
1. a kind of free curve bending machine of tube diameter variable, it is characterised in that：It include the peace being sequentially arranged along pipe fitting transporting direction
Bend pipe pushing mechanism and guiding mechanism in rack (12) and bending mold mechanism, rack (12) is horizontally disposed, and pipe fitting passes through
It is through at bend pipe pushing mechanism, guiding mechanism and bending mold mechanism；The bending mold mechanism includes bending die pedestal (1), magnet
Ring (3), screwed ring (4), steel end cap (5), curved matrix (6) and elastic band (7)；Bending die pedestal is provided with horizontal macropore on (1),
A screwed ring (4) is fixedly mounted in the both ends of horizontal macropore, there is gap and in gap between two screwed rings (4) at both ends
In be equipped with magnet ring (3), respective steel end cap (5), two steel ends are equipped with by thread bush respectively in two screwed rings (4)
It covers between (5) and is equipped with curved modular ring, curved modular ring circumferential lateral surface is tightly attached to steel end cap (5) surface, and pipe fitting is through curved modular ring center；
Curved modular ring along multiple curved matrixs (6) of the circumferential arrangement that makes a circle in week of pipe fitting mainly by constituting, and multiple curved matrixs (6) are through elastic band
(7) composition is concatenated after passing through itself middle part.
2. a kind of free curve bending machine of tube diameter variable according to claim 1, it is characterised in that：Each curved matrix
(6) two corners along pipe fitting radial outer end side open up chamfering, what two opposite end faces of steel end cap (5) were arranged to coordinate with chamfering
Lozenges, the bevel edge of curved matrix (6) are close to be bonded the lozenges of steel end cap (5).
3. a kind of free curve bending machine of tube diameter variable according to claim 1, it is characterised in that：Each curved matrix
(6) straight slot passed through for elastic band (7) is offered on.
4. a kind of free curve bending machine of tube diameter variable according to claim 1, it is characterised in that：The screwed ring
(4) magnetic material, magnet ring (3) is used to pass through magnetic force and screwed ring (4) connection function.
5. a kind of free curve bending machine of tube diameter variable according to claim 1, it is characterised in that：The Guiding machine
Structure is located between bend pipe pushing mechanism and bending mold mechanism, and the pipe fitting pushed to bend pipe pushing mechanism is supported and is oriented to.
6. the free curve bending machine of a kind of tube diameter variable according to claim 1 or 5, it is characterised in that：Described leads
Include two guide seats (8), bevel pinion (9) and bevel gear wheel (10) to mechanism, is respectively mounted inside two guide seats (8)
There are one bevel gear wheel (10), two bevel gear wheels (10) of two guide seats (8) are positioned opposite and at the end faced
It is provided with spiral groove on face, is connected between two guide seats (8) along multiple guide pads (13), pipe fitting passes through two guiding bottoms
The through-hole that seat (8) and bevel gear wheel (10) center opens up, multiple guide pads (13) are circumferentially-spaced uniformly distributed along pipe fitting；Guide pad (13)
Both ends are equipped with the rectangular teeth coordinated with spiral groove, and rectangular teeth is flush-mounted in spiral groove so that guide pad (13) both ends connect
In bevel gear wheel (10)；Guide pad (13) is internally provided with annular cavity towards pipe fitting side, and close installation has steel in annular cavity
Pearl (14), guide pad (13) are provided with bar shaped groove towards pipe fitting side, and steel ball (14) is connected to pipe after being locally pierced by bar shaped groove
Part.
7. a kind of free curve bending machine of tube diameter variable according to claim 1, it is characterised in that：The guiding bottom
Seat (8) is equipped with bevel pinion (9), and bevel pinion (9) engages connection with bevel gear wheel (10), and band is rotated by bevel pinion (9)
Dynamic bevel gear wheel (10) rotation, and then guide pad is driven by the drive mechanism that spiral groove and guide pad (13) sawtooth are formed
(13) it is moved radially along pipe fitting.
8. a kind of free curve bending machine of tube diameter variable according to claim 1, it is characterised in that：The bend pipe pushes away
Motivation structure includes claw (15), chuck base (16), sprocket wheel (17), driving shaft (18), chain (19), driven shaft (21) and ushers to seat
Bearing (22)；Chuck base (16) is equipped with claw (15), and claw (15) clamping pipe fitting, chuck base (16) and chain (19) pass through
Screw (20) is fixedly connected, and the sprocket wheel (17) at chain (19) both ends is set on driving shaft (18) and driven shaft (21), main
Moving axis (18) and driven shaft (21) are mounted on rack (12) by rolling bearing units (22).
9. a kind of free curve bending machine of tube diameter variable according to claim 8, it is characterised in that：The driving shaft
(18) motor is connected, drives driving shaft (18) to rotate by motor, and then by chain drive drive chuck base (16) and by card
The pipe fitting of pawl (15) clamping moves horizontally.
10. a kind of free curve bending machine of tube diameter variable according to claim 8, it is characterised in that：The rack
(12) it is equipped with slider bar rail, chuck base (16) bottom is equipped with sliding bar groove, and sliding bar groove is formed in slider bar rail
Sliding pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810394316.1A CN108480440B (en) | 2018-04-27 | 2018-04-27 | A kind of free curve bending machine of tube diameter variable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810394316.1A CN108480440B (en) | 2018-04-27 | 2018-04-27 | A kind of free curve bending machine of tube diameter variable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108480440A true CN108480440A (en) | 2018-09-04 |
| CN108480440B CN108480440B (en) | 2019-07-09 |
Family
ID=63313275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810394316.1A Active CN108480440B (en) | 2018-04-27 | 2018-04-27 | A kind of free curve bending machine of tube diameter variable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108480440B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114378136A (en) * | 2021-12-27 | 2022-04-22 | 无锡市晟斐机械设备制造有限公司 | Hydraulic pipe machine for threaded pipe |
| WO2022156357A1 (en) * | 2021-01-25 | 2022-07-28 | 浙江大学 | Bending-diameter-adjustable bending die device suitable for multiple pipes in one die |
| CN117259521A (en) * | 2023-11-14 | 2023-12-22 | 成都鑫晨航空科技有限公司 | Pipe bending device for aviation pipeline |
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| JPH08150419A (en) * | 1994-11-29 | 1996-06-11 | Nippon Sanso Kk | Pipe bender |
| CN2396907Y (en) * | 1999-08-31 | 2000-09-20 | 曾绍谦 | Improved three-dimensional pipe-bending plastic die |
| JP2000263142A (en) * | 1999-03-11 | 2000-09-26 | Matsushita Electric Works Ltd | Bending regulating member, auxiliary member and device for pipe bender |
| CN101161365A (en) * | 2007-11-22 | 2008-04-16 | 重庆大学 | A coiling wire mould for making tube with various outer diameter |
| CN105312376A (en) * | 2015-12-01 | 2016-02-10 | 浙江大学 | Cold pressing and bending forming die of large-diameter pipe |
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2018
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08150419A (en) * | 1994-11-29 | 1996-06-11 | Nippon Sanso Kk | Pipe bender |
| JP2000263142A (en) * | 1999-03-11 | 2000-09-26 | Matsushita Electric Works Ltd | Bending regulating member, auxiliary member and device for pipe bender |
| CN2396907Y (en) * | 1999-08-31 | 2000-09-20 | 曾绍谦 | Improved three-dimensional pipe-bending plastic die |
| CN101161365A (en) * | 2007-11-22 | 2008-04-16 | 重庆大学 | A coiling wire mould for making tube with various outer diameter |
| CN105312376A (en) * | 2015-12-01 | 2016-02-10 | 浙江大学 | Cold pressing and bending forming die of large-diameter pipe |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022156357A1 (en) * | 2021-01-25 | 2022-07-28 | 浙江大学 | Bending-diameter-adjustable bending die device suitable for multiple pipes in one die |
| CN114378136A (en) * | 2021-12-27 | 2022-04-22 | 无锡市晟斐机械设备制造有限公司 | Hydraulic pipe machine for threaded pipe |
| CN114378136B (en) * | 2021-12-27 | 2023-10-10 | 无锡市晟斐机械设备制造有限公司 | Threaded pipe hydraulic pipe machine |
| CN117259521A (en) * | 2023-11-14 | 2023-12-22 | 成都鑫晨航空科技有限公司 | Pipe bending device for aviation pipeline |
| CN117259521B (en) * | 2023-11-14 | 2024-02-06 | 成都鑫晨航空科技有限公司 | Pipe bending device for aviation pipeline |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108480440B (en) | 2019-07-09 |
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