CN104070090B - Lever pipe bender with angle orientation and bending method - Google Patents
Lever pipe bender with angle orientation and bending method Download PDFInfo
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- CN104070090B CN104070090B CN201410230843.0A CN201410230843A CN104070090B CN 104070090 B CN104070090 B CN 104070090B CN 201410230843 A CN201410230843 A CN 201410230843A CN 104070090 B CN104070090 B CN 104070090B
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- pipe
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- dish
- bend
- pressure pipe
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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
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/06—Bending rods, profiles, or tubes in press brakes or between rams and anvils or abutments; Pliers with forming dies
- B21D7/063—Pliers with forming dies
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- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention discloses a kind of pipe bender, provide a kind of bend pipe process time saving and energy saving, bend pipe angle can be set arbitrarily, and can the lever pipe bender of band angle orientation of disposable forming elbow and bending method, solve in the bend pipe process existed in prior art and need range estimation bend pipe angle and constantly adjust, not only bend pipe angular deviation is larger, difficult quality guarantee, and waste time and energy, the technical problem of the low grade of production efficiency, it comprises lower handle and is rotatably connected on the pressure pipe handle of lower handle one end, lower handle is provided with bend pipe dish, the pressure pipe handle corresponding with bend pipe dish is provided with pressure pipe head, pressure pipe head can bend along the outer ring surface of bend pipe dish by clamping copper pipe, the end face of described bend pipe dish is provided with corner indicating dial, corner indicating dial is rotatably connected to the locking knob of pointer ring and lockable pointer ring position, it is outer and be connected on corresponding pressure pipe head that pointer ring extends to bend pipe dish.
Description
Technical field
The present invention relates to a kind of pipe bender, particularly relate to a kind of operation time saving and energy saving, bend pipe angle can be set arbitrarily, and can the lever pipe bender of band angle orientation of disposable forming elbow and bending method.
Background technology
The metal tube such as stainless steel tube, copper pipe in use often needs bending to change original straight line circulating direction, and pipe bender is the specific purpose tool for bending metals pipe.Existing pipe bender is generally the side first one end of metal tube being fixed on bend pipe dish, the pressure pipe head rotated by the outer ring surface of pipe dish of can going for a stroll again clamps metal tube, rotating pressure pipe head makes metal tube bend along the outer ring surface of bend pipe dish, become bent to setting value to make metal tube, need range estimation bend pipe angle in bend pipe process and constantly adjust, not only bend pipe angular deviation is comparatively large, difficult quality guarantee, and waste time and energy, production efficiency is low.
Chinese patent discloses a kind of Portable pipe bender (CN2117957U), comprise pulley, bolting pad, bolt, iron plate block and handle, wherein form assembly pulley in parallel by two fixing pulleys arranged side by side with another mobilizable pulley, its both sides have iron plate block respectively, pass from the parts that iron plate block, bolting pad, pulley endoporus and the other end are corresponding respectively with bolt, then double nut is fixed, and a handle is housed in one end of fixed block.This device is according to lever principle, and be that fulcrum carries out bend pipe with intermediate pulley, have and operate the advantages such as time saving and energy saving, but exist equally in bend pipe process and need range estimation bend pipe angle and constantly adjust, not only bend pipe angular deviation is larger, difficult quality guarantee, and waste time and energy, the technical problems such as production efficiency is low.
Summary of the invention
It is time saving and energy saving that the present invention mainly provides a kind of bend pipe process, bend pipe angle can be set arbitrarily, and can the lever pipe bender of band angle orientation of disposable forming elbow and bending method, solve in the bend pipe process existed in prior art and need range estimation bend pipe angle and constantly adjust, not only bend pipe angular deviation is larger, difficult quality guarantee, and waste time and energy, the technical problem of the low grade of production efficiency.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals: a kind of lever pipe bender with angle orientation, comprise lower handle and be rotatably connected on the pressure pipe handle of lower handle one end, lower handle is provided with bend pipe dish, the pressure pipe handle corresponding with bend pipe dish is provided with pressure pipe head, pressure pipe head can bend along the outer ring surface of bend pipe dish by clamping copper pipe, the end face of described bend pipe dish is provided with corner indicating dial, corner indicating dial is rotatably connected to the locking knob of pointer ring and lockable pointer ring position, it is outer and be connected on corresponding pressure pipe head that pointer ring extends to bend pipe dish.By arranging corner indicating dial on a side end face of bend pipe dish, and the pointer ring that can indicate angle is set on corner indicating dial, first reserved the copper pipe corner of setting at corner indicating dial subscript by pointer ring before bend pipe, the angle wanted is turned to by pointer ring, and the position of pointer ring is pinned by locking knob, copper pipe pulls pressure pipe handle behind location, pressure pipe head clamping copper pipe bends along the outer ring surface of bend pipe dish, because pointer ring extends to outside bend pipe dish, when pressure pipe head turns to the pointer ring position extended to outside bend pipe dish, pointer ring is connected to position pressure pipe head defining pressure pipe head, pressure pipe head cannot be rotated further, bend pipe process is without the need to estimating angle and adjustment, disposable forming elbow, bend pipe even angle is consistent, bend pipe process is time saving and energy saving, production efficiency is high, quality is good.
As preferably, described lower handle is provided with riser, bend pipe dish is fixed on riser by the first trunnion axis, and locking knob to be screwed on the first trunnion axis and to be crimped on corner indicating dial by pointer ring.Bend pipe dish is fixed on riser by the first trunnion axis, and pointer ring compresses by the locking knob that spins on the first trunnion axis, structure is simple, and after screwing out locking knob, namely rotatable pointer ring carries out angle calibration, screw in locking knob after angle calibration and get final product locking pointer ring position, easy to use.
As more preferably, described first trunnion axis is rotationally connected one end of arm-tie, be provided with the second trunnion axis the other end of arm-tie is parallel, pressure pipe handle is rotatably connected on the second trunnion axis.By arranging arm-tie on the first trunnion axis, and be rotationally connected pressure pipe handle on the second trunnion axis of the arm-tie other end, guarantee pressure pipe handle go for a stroll pipe dish outer ring surface rotate, simple and reasonable.
As preferably, the rotating shaft that described pointer ring is corresponding is provided with the axial open double-faced groove of wedge shape, the opening of axial open double-faced groove is towards the bending direction of copper pipe, ball is provided with in axial open double-faced groove, between a surface of ball and axial open double-faced groove, be provided with Compress Spring, ball is clamped between the axis hole of pointer ring and another surface of axial open double-faced groove by Compress Spring.Because pointer ring only fixes on bend pipe dish end face by locking knob axial lock, when pressure pipe head and pointer ring are collided, pressure pipe head may drive pointer ring to rotate, pointer ring is once rotate, it drives the ball rotating in same direction in open double-faced groove simultaneously, cross section due to axial open double-faced groove is outer little interior large wedge structure, now ball cannot roll under the Double Pressures of pointer ring and the first trunnion axis, thus block the rotation of pointer ring, namely by ball, pointer ring is completely locked, pointer ring cannot be rotated towards the bending direction of copper pipe, namely lock the final position that pressure pipe head rotates, thus ensure that bend pipe bending angle, when regulating pointer ring to demarcate corner, rotate backward pointer ring, pointer endless belt moves ball rotating in same direction, Compress Spring compression, ball and the gap between pointer ring and the first trunnion axis become greatly, and pointer ring gets final product smooth rotation, structure is simple, is skillfully constructed, improves dependability.
As more preferably, two plane included angles that described axial open double-faced groove is corresponding are right angle, and one of them plane is perpendicular with corresponding pointer ring spindle central face, and another plane parallels with corresponding pointer ring spindle central face.The axial open double-faced groove of rectangular shaped makes the wedge-shaped in cross-section of axial open double-faced groove, not only easily processes, locked when guaranteeing that pointer ring rotates towards the bending direction of copper pipe simultaneously, automatic unlocking when rotating backward, and then carry out normal corner demarcation.
As more preferably, the axial open double-faced groove plane corresponding with described Compress Spring is provided with location hole of the spring, and one end of Compress Spring is plugged in location hole of the spring, and the other end level of Compress Spring is connected on ball.One end of Compress Spring is plugged on location hole of the spring internal fixtion, avoids Compress Spring in use procedure to deviate from axial open double-faced groove.
As preferably, described pressure pipe head comprises several pressure pipes wheel that the length direction along pressure pipe handle is rotationally connected, pressure pipe wheel outer ring surface on be provided with several can with detent in the annular of the copper pipe interworking of several specification, take turns corresponding bend pipe dish outer ring surface with pressure pipe and be provided with the lower detent of annular, copper pipe to be clamped in the lower detent of annular by detent in annular and to make copper pipe annularly descend detent to bend by pressure pipe wheel.By arranging several pressure pipes wheel on pressure pipe head, make copper pipe bending downward by pressure pipe wheel in the surface scrolls extruding of copper pipe, pressure pipe head and plumbers shed are rolling friction, not only bend pipe process is time saving and energy saving, and the wearing and tearing of pressure pipe head are little, long service life, and decrease the damage of copper pipe surface, it is little that the bending of roller extruding simultaneously makes copper pipe be out of shape, and flat ratio reaches 9%, and copper pipe bending and molding quality is good; Carry out clamping copper pipe by the upper and lower detent of annular, what ensure that copper pipe sells off angle and direction, and the size of annular upper and lower detent is different, and the copper pipe bend pipe for different size is processed, and versatility is good; Multiple pressure pipe wheel is set, is convenient to the force of the copper pipe bend pipe processing of Large Diameter Pipeline, guarantees that bend pipe process is more easily laborsaving.
As preferably, the lower handle that described bend pipe dish is corresponding with between pressure pipe handle is provided with copper pipe locating hole, one end of copper pipe is interted in copper pipe locating hole, and the other end of copper pipe is folded between pressure pipe head and bend pipe dish vertically upward afterwards.The lower end of copper pipe is connected in copper pipe locating hole, is convenient to copper pipe location.
A kind of bending method of the lever pipe bender with angle orientation, comprise lower handle and be rotatably connected on the pressure pipe handle of lower handle one end, lower handle is provided with bend pipe dish, lower handle corresponding between bend pipe dish with pressure pipe handle is provided with copper pipe locating hole, the pressure pipe handle corresponding with bend pipe dish is provided with pressure pipe head, the outer ring surface of pressure pipe wheel is provided with detent in several annulars, on bend pipe dish, correspondence is provided with detent under annular, the end face of bend pipe dish is provided with corner indicating dial, corner indicating dial is rotatably connected to the locking knob of pointer ring and lockable pointer ring position, it is outer and be connected on corresponding pressure pipe head that pointer ring extends to bend pipe dish, comprise following sequential steps:
1) overturn pressure pipe handle, make pressure pipe handle and lower handle horizontal development;
2) rotary indicator ring is to set angle, then it is locked to screw locking knob;
3) get copper pipe, one end of copper pipe is inserted copper pipe locating hole internal fixtion downwards, the other end of copper pipe to be upwards clamped under the annular of corresponding specification on bend pipe dish in detent;
4) rotate pressure pipe handle upwards, in annular corresponding on pressure pipe head, detent clamps copper pipe;
5) pull pressure pipe handle near lower handle, copper pipe annularly descends detent to be out of shape bending, until pressure pipe head is connected on the pointer ring that extends to outside bend pipe dish;
6) copper pipe is removed.
Bend pipe processing is time saving and energy saving, can set arbitrarily bend pipe angle, and according to the disposable forming elbow of bend pipe set angle, without the need to range estimation adjustment in bend pipe process, production efficiency is high, and bend pipe angular deviation is little, and quality is good.
Therefore, the lever pipe bender of band angle orientation of the present invention and bending method have following advantage:
1. during bend pipe, single use deflectable is to set angle, time saving and energy saving, and production efficiency is high;
2. pointer loop mapping precision is high, and bend pipe angular deviation is little, and uniform quality is consistent;
3. can set arbitrarily bend pipe angle value;
4. can be used for the bend pipe processing of multiple copper pipe, versatility is good;
5. adopt roller extruded, after bend pipe, copper pipe distortion is little, and flat ratio is low.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of a kind of lever pipe bender with angle orientation of the present invention;
Fig. 2 is the left view (removing copper pipe) shown in Fig. 1;
Fig. 3 is stereogram of the present invention;
Fig. 4 is the structural representation after the present invention removes locking knob;
Fig. 5 is the enlarged drawing at the place of A shown in Fig. 4.
detailed description of the invention:
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment:
As illustrated in fig. 1 and 2, a kind of lever pipe bender with angle orientation of the present invention, comprise lower handle 1, in one end of lower handle 1 upper surface, one piece of riser 6 is installed, on riser 6, level is installed with the first trunnion axis 10, the first trunnion axis 10 that riser 6 leading flank is corresponding is coaxially fixed wtih a bend pipe dish 3, the outer ring surface of bend pipe dish 3 has be arranged in parallel three can with detent 7 under the annular of different size copper pipe 4 interworking, the first trunnion axis 10 that riser 6 trailing flank is corresponding is rotationally connected one end of arm-tie 16, at arm-tie 16 other end relative with the first trunnion axis 10, second trunnion axis 12 is installed, second trunnion axis 12 is parallel with the first trunnion axis 10, second trunnion axis 12 is rotationally connected one end of pressure pipe handle 2, pressure pipe handle 2 lower surface corresponding with bend pipe dish 3 is equipped with a pressure pipe 5, pressure pipe 5 comprises the U-shaped wheel cover 14 interting and be fixed on the second trunnion axis 12, bend pipe dish 3 is pointed in the openend of U-shaped wheel cover 14, between two walls of U-shaped wheel cover 14, level is installed with two roller shafts 15, two roller shafts 15 are along the equidistant arrangement of length direction of pressure pipe handle 2, roller shaft 15 is installed a pressure pipe wheel 8 respectively, with detent 11 in the annular of interworking corresponding to detent under annular 7 on the outer ring surface of pressure pipe wheel 8, as shown in Figure 3, on the first trunnion axis 10 that the anterior end surface of bend pipe dish 3 is corresponding, coaxial sleeve is filled with corner indicating dial 13, on corner indicating dial 13, mark has the scale value of 0 ゜ to 180 ゜, the first trunnion axis 10 that corner indicating dial 13 outboard end is corresponding is also rotationally connected a pointer ring 17, pointer ring 17 is pressed on corner indicating dial 13 by the locking knob 18 be screwed on the first trunnion axis 10 axle head, pointer plush copper on its pointer ring 17 horizontally outward extends to outside bend pipe dish 3, when pressure pipe handle 2 turns over bend pipe dish 3, pointer plush copper on pointer ring 17 is just connected in the breach of U-shaped wheel cover 14 lower edge, as shown in Figure 4 and Figure 5, first trunnion axis 10 axle head corresponding to pointer ring 17 side has the axial open double-faced groove 19 of a wedge shape, two plane included angles of axial open double-faced groove 19 correspondence are right angle and extend to corner indicating dial 13 surface, the opening of axial open double-faced groove 19 is towards the bending direction of copper pipe 4, when copper pipe 4 is bending along clockwise direction, horizontal plane on axial open double-faced groove 19 and the first trunnion axis 10 longitudinal center face perpendicular, the parallel left side being positioned at the first trunnion axis 10 longitudinal center face of vertical plane.At axial open double-faced groove 19 built with a ball 20, the vertical plane of the axial open double-faced groove 19 corresponding with ball 20 has a location hole of the spring 22, a Compress Spring 21 is fixed wtih in location hole of the spring 22 grafting, it is outer and be connected on ball 20 that Compress Spring 21 extends to location hole of the spring 22, ball 20 by Compress Spring 21 apical grafting between the axis hole of pointer ring 17 and the horizontal plane of axial open double-faced groove 19.As shown in Figure 1, lower handle 1 on the left of bend pipe dish 3 has a copper pipe locating hole 9, fix for the ease of copper pipe 4 clamping, the backside tape of copper pipe locating hole 9 is jagged, the lower end of copper pipe 4 is vertically interspersed to be connected in copper pipe locating hole 9, the upper end of copper pipe 4 extend vertically upward and clip under annular between detent 7, when pressure pipe handle 2 clockwise direction overturns, in annular corresponding in pressure pipe 5, detent 11 clamps the outside of copper pipe 4, pull on dynamic pressure tube handle 2 downwards time, namely copper pipe 4 bends distortion by rolling extrusion detent 7 under annular of pressure pipe wheel 8.
The bending method of the lever pipe bender with angle orientation, comprises following sequential steps:
1) overturn pressure pipe handle 2, make pressure pipe handle 2 lower handle 1 outwards horizontal development relatively;
2) angle setting copper pipe 4 corner is 90 ゜, rotates counterclockwise pointer ring 17, makes its pointer plush copper just be positioned at 90 ゜ scale places of corner indicating dial 13, then screw locking knob 18 by locked for pointer ring 17;
3) get copper pipe 4, one end of copper pipe 4 is inserted copper pipe locating hole 9 internal fixtion downwards, under the other end annular that upwards clip is corresponding on bend pipe dish 3 of copper pipe 4 in detent 7;
4) rotate clockwise pressure pipe handle 2 upwards, in annular corresponding in pressure pipe 5, detent 11 clamps the outside of copper pipe 4;
5) pull pressure pipe handle 2 downwards near lower handle 1, copper pipe 4 annularly descend detent 7 to be out of shape and bends, until pressure pipe 5 is connected on pointer ring 17 pointer plush copper cannot be rotated further;
6) outwards launch pressure pipe handle 2 counterclockwise, remove copper pipe 4.
Specific embodiment described herein is only to design of the present invention explanation for example.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (7)
1. the lever pipe bender with angle orientation, comprise lower handle (1) and be rotatably connected on the pressure pipe handle (2) of lower handle (1) one end, lower handle (1) is provided with bend pipe dish (3), the pressure pipe handle (2) corresponding with bend pipe dish (3) is provided with pressure pipe head (5), pressure pipe head (5) can bend along the outer ring surface of bend pipe dish (3) by clamping copper pipe (4), it is characterized in that: on the end face of described bend pipe dish (3), be provided with corner indicating dial (13), corner indicating dial (13) is rotatably connected to the locking knob (18) of pointer ring (17) and lockable pointer ring (17) position, pointer ring (17) extends to bend pipe dish (3) and be connected on corresponding pressure pipe head (5) outward, described pressure pipe head (5) comprises several pressure pipes wheel (8) that the length direction along pressure pipe handle (2) is rotationally connected, pressure pipe wheel (8) outer ring surface on be provided with several can with detent (11) in the annular of the copper pipe of several specification (4) interworking, take turns bend pipe dish (3) outer ring surface corresponding to (8) with pressure pipe and be provided with the lower detent (7) of annular, copper pipe (4) to be clamped in the lower detent (7) of annular by the upper detent (11) of annular and to make copper pipe (4) annularly descend detent (7) to bend by pressure pipe wheel (8), the lower handle (1) that described bend pipe dish (3) is corresponding with between pressure pipe handle (2) is provided with copper pipe locating hole (9), one end of copper pipe (4) is interted in copper pipe locating hole (9), and the other end of copper pipe (4) is folded between pressure pipe head (5) and bend pipe dish (3) vertically upward afterwards.
2. the lever pipe bender of band angle orientation according to claim 1, it is characterized in that: on described lower handle (1), be provided with riser (6), bend pipe dish (3) is fixed on riser (6) by the first trunnion axis (10), and locking knob (18) is screwed in the first trunnion axis (10) and goes up and be crimped on corner indicating dial (13) by pointer ring (17).
3. the lever pipe bender of band angle orientation according to claim 2, it is characterized in that: on described first trunnion axis (10), be rotationally connected one end of arm-tie (16), be provided with the second trunnion axis (12) the other end of arm-tie (16) is parallel, pressure pipe handle (2) is rotatably connected on the second trunnion axis (12).
4. the lever pipe bender of the band angle orientation according to claim 1 or 2 or 3, it is characterized in that: the axial open double-faced groove (19) being provided with wedge shape in the rotating shaft that described pointer ring (17) is corresponding, the opening of axial open double-faced groove (19) is towards the bending direction of copper pipe (4), ball (20) is provided with in axial open double-faced groove (19), Compress Spring (21) is provided with between a surface of ball (20) and axial open double-faced groove (19), ball (20) is clamped between the axis hole of pointer ring (17) and another surface of axial open double-faced groove (19) by Compress Spring (21).
5. the lever pipe bender of band angle orientation according to claim 4, it is characterized in that: two plane included angles of described axial open double-faced groove (19) correspondence are right angle, one of them plane is perpendicular with corresponding pointer ring (17) spindle central face, and another plane parallels with corresponding pointer ring (17) spindle central face.
6. the lever pipe bender of band angle orientation according to claim 4, it is characterized in that: in axial open double-faced groove (19) plane corresponding with described Compress Spring (21), be provided with location hole of the spring (22), one end of Compress Spring (21) is plugged in location hole of the spring (22), and the other end level of Compress Spring (21) is connected on ball (20).
7. the bending method of the lever pipe bender with angle orientation, comprise lower handle (1) and be rotatably connected on the pressure pipe handle (2) of lower handle (1) one end, lower handle (1) is provided with bend pipe dish (3), lower handle (1) corresponding between bend pipe dish (3) with pressure pipe handle (2) is provided with copper pipe locating hole (9), the pressure pipe handle (2) corresponding with bend pipe dish (3) is provided with pressure pipe head (5), the outer ring surface of pressure pipe wheel (8) is provided with the upper detent (11) of several annulars, detent (7) under the upper correspondence of bend pipe dish (3) is provided with annular, the end face of bend pipe dish (3) is provided with corner indicating dial (13), corner indicating dial (13) is rotatably connected to the locking knob (18) of pointer ring (17) and lockable pointer ring (17) position, pointer ring (17) extends to bend pipe dish (3) and be connected on corresponding pressure pipe head (5) outward, it is characterized in that: comprise following sequential steps:
1) overturn pressure pipe handle (2), make pressure pipe handle (2) and lower handle (1) horizontal development;
2) rotary indicator ring (17) is to set angle, then it is locked to screw locking knob (18);
3) get copper pipe (4), one end of copper pipe (4) is inserted copper pipe locating hole (9) internal fixtion downwards, the other end of copper pipe (4) to be upwards clamped under the annular of the upper corresponding specification of bend pipe dish (3) in detent (7);
4) rotate pressure pipe handle (2) upwards, in the upper corresponding annular of pressure pipe head (5), detent (11) clamps copper pipe (4);
5) pull pressure pipe handle (2) near lower handle (1), copper pipe (4) annularly descends detent (7) to be out of shape bending, extends on bend pipe dish (3) pointer ring (17) outward until pressure pipe head (5) is connected to;
6) copper pipe (4) is removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410230843.0A CN104070090B (en) | 2014-05-29 | 2014-05-29 | Lever pipe bender with angle orientation and bending method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410230843.0A CN104070090B (en) | 2014-05-29 | 2014-05-29 | Lever pipe bender with angle orientation and bending method |
Publications (2)
| Publication Number | Publication Date |
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| CN104070090A CN104070090A (en) | 2014-10-01 |
| CN104070090B true CN104070090B (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410230843.0A Active CN104070090B (en) | 2014-05-29 | 2014-05-29 | Lever pipe bender with angle orientation and bending method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110548785B (en) * | 2019-09-04 | 2020-11-17 | 郁龙清 | Pipe bender for construction with positioner and ability light use |
| CN114378214A (en) * | 2021-12-01 | 2022-04-22 | 北京微纳星空科技有限公司 | Bending tool |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1373855A (en) * | 1971-06-21 | 1974-11-13 | Boyan Ltd | Manually actuatable tool |
| CN86204039U (en) * | 1986-09-01 | 1987-09-02 | 王智敏 | Pipe bender of manual operation |
| JPH11226654A (en) * | 1998-02-19 | 1999-08-24 | Rex Ind Co Ltd | Pipe bender |
| CN102039334A (en) * | 2009-10-23 | 2011-05-04 | 艾默生管道工具(上海)有限公司 | Pipe bender |
| CN203936187U (en) * | 2014-05-29 | 2014-11-12 | 浙江飞越机电有限公司 | With the lever pipe bender of angle orientation |
-
2014
- 2014-05-29 CN CN201410230843.0A patent/CN104070090B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1373855A (en) * | 1971-06-21 | 1974-11-13 | Boyan Ltd | Manually actuatable tool |
| CN86204039U (en) * | 1986-09-01 | 1987-09-02 | 王智敏 | Pipe bender of manual operation |
| JPH11226654A (en) * | 1998-02-19 | 1999-08-24 | Rex Ind Co Ltd | Pipe bender |
| CN102039334A (en) * | 2009-10-23 | 2011-05-04 | 艾默生管道工具(上海)有限公司 | Pipe bender |
| CN203936187U (en) * | 2014-05-29 | 2014-11-12 | 浙江飞越机电有限公司 | With the lever pipe bender of angle orientation |
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| CN104070090A (en) | 2014-10-01 |
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