CN201168732Y - Integrated pipe bender - Google Patents

Integrated pipe bender Download PDF

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Publication number
CN201168732Y
CN201168732Y CNU2008200426860U CN200820042686U CN201168732Y CN 201168732 Y CN201168732 Y CN 201168732Y CN U2008200426860 U CNU2008200426860 U CN U2008200426860U CN 200820042686 U CN200820042686 U CN 200820042686U CN 201168732 Y CN201168732 Y CN 201168732Y
Authority
CN
China
Prior art keywords
enlarging
cutter
cylinder
rotating shaft
pipe fitting
Prior art date
Application number
CNU2008200426860U
Other languages
Chinese (zh)
Inventor
龙晓斌
Original Assignee
中山市奥美森工业有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 中山市奥美森工业有限公司 filed Critical 中山市奥美森工业有限公司
Priority to CNU2008200426860U priority Critical patent/CN201168732Y/en
Application granted granted Critical
Publication of CN201168732Y publication Critical patent/CN201168732Y/en

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Abstract

The utility model relates to an integration tube bender which comprises a machine tool workbench. A tube straightening mechanism, a tube feeding structure and a syphon molding mechanism are orderly arranged on the workbench. The integration tube bender has the key points of design that a cutting device and a tube head flaring device are also arranged between the tube feeding structure and the syphon molding mechanism; the cutting device comprises a hollow rotating shaft penetrated by the tube, a cutter arranged on the rotating shaft and a controlling mechanism for controlling the opening and closing of the cutter; the tube head flaring device comprises a translatable flaring punch, a flaring clamping die mechanism and a drive mechanism driving the flaring punch to move; the flaring punch can prop at one side of the flaring clamping die mechanism. The aim of the utility model is to provide the integration tube bender which can enable the flaring of the tube materials and the siphons to be molded integrally.

Description

Integrated pipe bender

[technical field]

The utility model relates to a kind of bending machine, furtherly be a kind of pipe fitting enlarging and bend pipe integrated pipe bender, it is mainly used in five metals hot-water heating pipe fitting industry.

[background technology]

At present, involved bending machine in hardware industry hot-water heating pipe fitting, its kind comprises hydraulic pressure, electronic and mechanical type bending machine.Existing various bending machine has generally included a feed mechanism and a bend pipe shaping apparatus structure, be used to finish and pipe fitting is sent into bend pipe mould carry out bend pipe, the product structure that processes like this is single, and the actual bend pipe spare that uses will carry out the enlarging processing to its mouth of pipe toward contact, make that bend pipe following process location is difficult, and manufacturing procedure increased, and production cost is also high, is not easy to promoting the use of of bend pipe product.

[utility model content]

The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of can be with tube material enlarging and the one-time formed integrated pipe bender of bend pipe.

In order to solve the technical problem of above-mentioned existence, the utility model adopts following technical proposals:

Integrated pipe bender, it includes platen, pipe fitting aligning mechanism, pipe fitting feeding structure and bend pipe shaping apparatus structure are housed on the workbench successively, it is characterized in that also being provided with between pipe fitting feeding structure and bend pipe shaping apparatus structure cutoff device and tube head enlarging device, described cutoff device includes a hollow rotary shaft that passes for pipe fitting, be installed in the cutter on the rotating shaft and the controlling organization of control cutter head opening and closing; But described tube head enlarging device comprises the enlarging drift, enlarging clamping die mechanism of translation and drives the driving mechanism that the enlarging drift moves, and described enlarging drift can lean one side in above-mentioned enlarging clamping die mechanism;

Aforesaid integrated pipe bender is characterized in that described enlarging clamping die mechanism includes movable flaring die, fixing flaring die and the cylinder down gone up, and last flaring die is fixedly connected on the cylinder motion bar, and upper and lower flaring die is positioned at described rotating shaft outer end one side;

Aforesaid integrated pipe bender is characterized in that described workbench also is provided with to break cylinder, and described enlarging clamping die mechanism is installed on the above-mentioned piston push rod of breaking cylinder;

Aforesaid integrated pipe bender is characterized in that described driving mechanism includes the described enlarging drift of driving and is parallel to the axially movable enlarging oil cylinder of rotating shaft perpendicular to axially movable first cylinder of described rotating shaft and driving enlarging drift; First cylinder is fixedly mounted on the described workbench, and being equipped with one on the push rod of first cylinder can be perpendicular to the axial adjustable shelf of rotating shaft, and described enlarging oil cylinder is fixedly mounted on the adjustable shelf;

Aforesaid integrated pipe bender, it is characterized in that described controlling organization includes the positioning disk that is fixed on the rotating shaft outer end, the pressing plate that is used to prevent the cutter slippage, positioning disk and pressing plate are fixedly linked, and described cutter are limited between positioning disk and the pressing plate vertically;

Aforesaid integrated pipe bender, it is characterized in that described positioning disk is provided with a plurality of chutes, correspondence has a plurality of bar holes that supply cutter to pass on the pressing plate, and described cutter have a plurality of, and each cutter afterbody correspondence is contained in above-mentioned each chute and can slides along chute;

Aforesaid integrated pipe bender, it is characterized in that described controlling organization also includes axle sleeve and the mobile vertically cylinder of propeller shaft sleeve that is sleeved on outside the rotating shaft, also be respectively arranged with the spring that cutter can be ejected outward in the chute, be respectively equipped with the briquetting at a band oblique angle on each cutter, this briquetting can lean outside above-mentioned axle sleeve on the end periphery.

The beneficial effects of the utility model are:

1, through pipe fitting aligning mechanism, pipe fitting feeding structure cutoff device, tube head enlarging device and bend pipe shaping apparatus structure on the workbench processing in order successively, can obtain the pipe fitting product of a bend pipe and an end enlarging, set degree height, realized automation, greatly reduce production cost, avoided the appearance of the uncertain factor of operator, the quality of production is guaranteed;

2, the bend pipe shaping apparatus structure can be bent not at conplane pipe fitting, and bend pipe is flexible, convenient processing to different shape hot-water heating pipe fitting.

[description of drawings]

Fig. 1 is the perspective view of the utility model user mode;

Fig. 2 is the utility model left view;

Fig. 3 is an A place enlarged drawing among Fig. 2;

Fig. 4 is pipe fitting feeding structure and a cutoff device assembling assumption diagram in the utility model;

Fig. 5 is a B place enlarged drawing among Fig. 4;

Fig. 6 is the structural representation that motor drives rotating shaft in the utility model by synchronous band;

Fig. 7 for the controlling organization and the rotating shaft of cutter head opening and closing in the utility model, break cylinder assembly structure schematic diagram;

Fig. 8 is rotating shaft and a cutter package assembly schematic diagram in the utility model;

Fig. 9 is positioning disk and a pressure plate structure schematic diagram in the utility model;

Figure 10 is an enlarging drift driving mechanism structure schematic diagram in the utility model;

Figure 11 is the left view of Fig. 9;

Figure 12 is a bend pipe shaping apparatus structure structural representation in the utility model.

[specific embodiment]

Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described in further detail:

As shown in the figure, integrated pipe bender, it includes platen 1, and pipe fitting aligning mechanism 2, pipe fitting feeding structure 3 and bend pipe shaping apparatus structure 4 are housed on the workbench 1 successively, also is provided with cutoff device and tube head enlarging device between pipe fitting feeding structure 3 and bend pipe shaping apparatus structure 4.

Cutoff device includes a hollow rotary shaft 51 that passes for pipe fitting, be installed in the cutter 52 on the rotating shaft 51 and the controlling organization 53 of control cutter head opening and closing, and rotating shaft 51 adopts Motor Drive in the utility model.But tube head enlarging device comprises the enlarging drift 61, enlarging clamping die mechanism 62 of translation and drives the driving mechanism 63 that enlarging drift 61 moves, and enlarging drift 61 can lean 62 1 sides in above-mentioned enlarging clamping die mechanism.

Wherein, pipe fitting aligning mechanism 2 comprises the first alignment wheels 21 and the second alignment wheels 22 that are horizontal distribution of vertical distribution, also is provided with in the first alignment wheels, 21 front sides to be used for the spacing two-wheel 20 of level that pipe fitting enters.The first alignment wheels 21 and the second alignment wheels 22 are arranged for mutual dislocation and are faced the school wheels that beeline between the two-wheeled equals the pipe fitting external diameter mutually, and each school wheel circumference has the annulus race.

Pipe fitting feeding structure 3 comprises that one is installed in clamping cylinder 31, feeding upper clamp formwork 32 and the feeding lower clamp formwork 33 on the screw mandrel 30, and feeding upper clamp formwork 32 is fixedly connected on the push rod that clamps cylinder 31.During work, controller control on the workbench 1 clamps cylinder 31 and drives 32 liftings of feeding upper clamp formwork, treat that pipe fitting passes back clamping cylinder 31 drive feeding upper clamp formworks 32 and presses down, make pipe fitting by clipping the upper and lower clamping 32,33 of feeding between, controller starter motor on the subsequent working platform 1 also drives screw mandrel 30 rotations, screw mandrel 30 drives clamping cylinder 31, feeding upper clamp formwork 32 and feeding lower clamp formwork 33 and moves forward together, realizes forwarding of pipe fitting.After screw mandrel 30 rotates a period of time, feeding upper clamp formwork 32 promotes and unclamps pipe fitting, controller control motor on the workbench 1 drives screw mandrel 30 reverse rotations again, and screw mandrel 30 is being with clamping cylinder 31, feeding upper clamp formwork 32 and feeding lower clamp formwork 33 to get back to original position, finishes a feeding.The length of a feeding is decided according to the required length of bend pipe spare, the length difference, and the length that screw mandrel 30 drive clamping cylinders 31, feeding upper clamp formwork 32 and feeding lower clamp formwork 33 move forward is just different.

Bend pipe shaping apparatus structure 4 includes a travelling carriage 41 and is installed in bend pipe mould 42, clamping 43 and pattern 44 on the travelling carriage 41, and the keeper 45 that is positioned on the workbench 1 and can axially moves around along pipe fitting; Bend pipe mould 42 and clamping 43 are fixed in the same rotating shaft 46, also be equipped with on the travelling carriage 41 to drive the clamping cylinder 48 of waiing upon clothes motor 47, driving clamping 43 upper and lower translations that rotating shaft 46 is rotated, and the pattern cylinder 49 that drives pattern 44 left and right sides translations.In the utility model, another that promote travelling carriage 41 translations also is housed on workbench 1 waits upon the clothes motor.Travelling carriage 41 translations can be finished bend pipe mould 42 and pattern 44 close pipe fittings, then pattern 44 and the bend pipe mould 42 common pipe fittings that clamp; Travelling carriage 41 oppositely moves, and is being with pipe fitting to shift to a side and is finishing bend pipe again.

Controlling organization 53 includes the positioning disk 531, the pressing plate 530 that is used to prevent cutter 52 slippages that are fixed on rotating shaft 51 outer ends, be sleeved on the cylinder 533 that the outer axle sleeve 532 of rotating shaft 51 and propeller shaft sleeve 532 move vertically, positioning disk 531 and pressing plate 530 are fixedly linked, and cutter 52 are limited between positioning disk 531 and the pressing plate 530 vertically.

Positioning disk 531 is provided with a plurality of chutes 5310, and correspondence has a plurality of bar holes 5300 that supply cutter 52 to pass on the pressing plate 530, and cutter 52 have a plurality of, and each cutter 52 afterbody correspondence is contained in above-mentioned each chute 5310 and can slides along chute.

In the utility model, cutter 52 have three, and wherein two are the location runner, and the 3rd is the runner that has blade, and three cutter 52 correspondences are contained in three chutes 5310 also can slide along chute; Also be respectively arranged with the spring that cutter 52 can be ejected outward in each chute 5310, be respectively equipped with the briquetting 520 at a band oblique angle on each cutter 52, this briquetting 520 can lean outside axle sleeve 532 on the end periphery.During work, cylinder on the controller control controlling organization 53 on the workbench 1 promotes axle sleeve 532 and moves forward, each oblique angle briquetting 520 of axle sleeve 532 roof pressures is drawn close to rotating shaft 51 core wheels, thereby make three cutter 52 compression springs and draw close to rotating shaft 51 core wheels along chute 5310 separately, like this, three cutter 52 can cut the pipe fitting that passes rotating shaft 51.

Enlarging clamping die mechanism 62 includes movable flaring die 621, fixing flaring die 622 and the cylinder down gone up, and last flaring die 621 is fixedly connected on the cylinder motion bar, and upper and lower flaring die 621,622 is positioned at described rotating shaft 51 outer ends one side.

Driving mechanism 63 includes the described enlarging drift 61 of driving and is parallel to rotating shaft 51 axially movable enlarging oil cylinders 631 perpendicular to described rotating shaft 51 axially movable first cylinders 630 and driving enlarging drift 61; First cylinder 630 is fixedly mounted on the described workbench 1, and being equipped with one on the push rod of first cylinder 630 can be perpendicular to the axial adjustable shelf 632 of rotating shaft 51, and described enlarging oil cylinder 631 is fixedly mounted on the adjustable shelf 632.During work; first cylinder 630 starts earlier and drive adjustable shelf 632 moves; make the enlarging drift 61 on the adjustable shelf 632 aim at enlarging clamping die mechanism 62 upper and lower flaring dies, 621,622 centers; then; first cylinder 630 stops; simultaneously enlarging oil cylinder 631 promotes enlarging drift 61 and moves to enlarging clamping die mechanism 62, makes that the pipe fitting in 61 pairs of enlarging clamping dies of enlarging drift mechanism 62 carries out enlarging processing.

The course of work of the present utility model is as follows:

During work, the blank pipe fitting is clamped by feeding structure 3 through pipe fitting aligning mechanism 2 backs and carries out feeding.The length of a feeding is decided according to the required length of bend pipe spare, the length difference, and the length that screw mandrel drive clamping cylinder 31, feeding upper clamp formwork 32 and feeding lower clamp formwork 33 move forward is just different.

Transmit rear tubular member and enter in the hollow rotary shaft 51 on the cutoff device, the pipe fitting front end passes rotating shaft 51, and three cutter 52 on the rotating shaft 51 are along the pipe fitting circumference uniform distribution but do not contact.Enlarging clamping die mechanism 62 clippings on controller on the workbench 1 control tube head enlarging device are lived the pipe fitting front end, drive enlarging drifts 61 with rear drive mechanism 63 and move and lean in above-mentioned enlarging clamping die mechanism 62 1 sides and carry out enlarging processing.After enlarging was finished, the controller control enlarging clamping die mechanism 62 on the workbench 1, driving mechanism 63 were got back to reset condition.

After finishing the enlarging processing to pipe fitting, the travelling carriage 41 on the controller control bend pipe shaping apparatus structure 4 on the workbench 1 connects material near to be curved preparation.

Then, pipe fitting feeding structure 3 is carried out the feeding second time, and promptly pipe fitting moves forward a to be curved length.Enlarging clamping die mechanism 62 clamps pipe fitting once more; simultaneously starter motor driven rotary axle 51 and on cutter 52 rotations; and pipe fitting cut; cylinder on the controlling organization 53 sets back subsequently; three cutter 52 open along separately chute 5310 under the effect of spring; oblique angle briquetting 520 extruding axle sleeves 532 on the cutter 52, axle sleeve 532 oppositely moves and sets back.

In order to guarantee that pipe fitting can disconnect along the cut place; what workbench 1 also was provided with two horizontal positioned in the utility model breaks cylinder 64; two break cylinder 64 is positioned at rotating shaft 51 both sides; enlarging clamping die mechanism 62 is installed on the above-mentioned push rod of breaking cylinder 64; be that the cutting pipes post-tensioning cylinder 64 of dying can promote enlarging clamping die mechanism 62 forward and moves forward a bit of distance; because enlarging clamping die mechanism 62 is just clamping pipe fitting this moment, thus move forward out to be curved separate with follow-up pipe fitting from the cut place.

To be curved quilt broken simultaneously, and the pattern 44 on the controller control travelling carriage 41 on the workbench 1 is pressed against bend pipe mould 42 1 sides with to be curved under pattern cylinder 49 drives, and pipe fitting unclamps in enlarging clamping die mechanism 62, gets back to the origin-location.Controller control travelling carriage 41 is got back to the origin-location then, and keeper 45 moved forward and withstood on to be curved tail end under air cylinder driven this moment, prevents to be curved swing and influence bending quality in bend pipe.

Subsequently, clamping cylinder 48 drives in the clamping 43 and moves, and waits upon clothes motor 47 driving bend pipe moulds 42 and clamping 43 46 rotations around the shaft and carries out bend pipe, and in the bend pipe process, keeper 45 can drive pipe fitting and rotate, thereby bends three-dimensional bend pipe spare.

At last, the manipulator on the workbench 1 is with the pipe fitting interlinear notes that curve and send in the other container of lathe.

Claims (7)

1, integrated pipe bender, it includes platen (1), pipe fitting aligning mechanism (2), pipe fitting feeding structure (3) and bend pipe shaping apparatus structure (4) are housed on the workbench (1) successively, it is characterized in that also being provided with between pipe fitting feeding structure (3) and bend pipe shaping apparatus structure (4) cutoff device and tube head enlarging device, described cutoff device includes a hollow rotary shaft (51) that passes for pipe fitting, be installed in the cutter (52) on the rotating shaft (51) and the controlling organization (53) of control cutter head opening and closing; But described tube head enlarging device comprises the enlarging drift (61), enlarging clamping die mechanism (62) of translation and drives the driving mechanism (63) that enlarging drift (61) moves, and described enlarging drift (61) can lean (62) one sides in above-mentioned enlarging clamping die mechanism.
2, integrated pipe bender according to claim 1; it is characterized in that described enlarging clamping die mechanism (62) includes movable flaring die (621), fixing flaring die (622) and the cylinder down gone up; last flaring die (621) is fixedly connected on the cylinder motion bar, and upper and lower flaring die (621,622) is positioned at described rotating shaft (51) outer end one side.
3, integrated pipe bender according to claim 2 is characterized in that described workbench (1) also is provided with to break cylinder (64), and described enlarging clamping die mechanism (62) is installed on the above-mentioned piston push rod of breaking cylinder (64).
4, integrated pipe bender according to claim 1 and 2 is characterized in that described driving mechanism (63) includes the described enlarging drift of driving (61) and is parallel to the axially movable enlarging oil cylinder of rotating shaft (51) (631) perpendicular to axially movable first cylinder of described rotating shaft (51) (630) and driving enlarging drift (61); First cylinder (630) is fixedly mounted on the described workbench (1), and being equipped with one on the push rod of first cylinder (630) can be perpendicular to the axial adjustable shelf (632) of rotating shaft (51), and described enlarging oil cylinder (631) is fixedly mounted on the adjustable shelf (632).
5, integrated pipe bender according to claim 1, it is characterized in that described controlling organization (53) includes the positioning disk (531) that is fixed on rotating shaft (51) outer end, the pressing plate (530) that is used to prevent cutter (52) slippage, positioning disk (531) and pressing plate (530) are fixedly linked, and described cutter (52) are limited between positioning disk (531) and the pressing plate (530) vertically.
6, integrated pipe bender according to claim 5, it is characterized in that described positioning disk (531) is provided with a plurality of chutes (5310), pressing plate (530) is gone up correspondence and is had a plurality of bar holes (5300) that supply cutter (52) to pass, described cutter (52) have a plurality of, and each cutter (52) afterbody correspondence is contained in above-mentioned each chute (5310) and can slides along chute.
7, integrated pipe bender according to claim 6, it is characterized in that described controlling organization (53) also includes axle sleeve (532) and the mobile vertically cylinder (533) of propeller shaft sleeve (532) that is sleeved on outside the rotating shaft (51), also be respectively arranged with the spring that cutter (52) can be ejected outward in the chute (5310), be respectively equipped with the briquetting (520) at a band oblique angle on each cutter (52), this briquetting (520) can lean outside above-mentioned axle sleeve (532) on the end periphery.
CNU2008200426860U 2008-01-05 2008-01-05 Integrated pipe bender CN201168732Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008200426860U CN201168732Y (en) 2008-01-05 2008-01-05 Integrated pipe bender

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008200426860U CN201168732Y (en) 2008-01-05 2008-01-05 Integrated pipe bender

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Publication Number Publication Date
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102773361A (en) * 2012-07-09 2012-11-14 和和机械(张家港)有限公司 Manual feeding device used in full-automatic numerical control hydraulic pipe bender
CN102989818A (en) * 2011-12-31 2013-03-27 中山市奥美森工业有限公司 Clamping device of elliptical tube machine
CN103878267A (en) * 2013-11-29 2014-06-25 中山市奥美森工业有限公司 Pipe bending machine
CN104098257A (en) * 2013-04-03 2014-10-15 颜良德 Spiral transparent pipe pin-bending machine
CN105057764A (en) * 2015-07-30 2015-11-18 陕西百思特模具有限公司 Cutter bit and overlaying type short U-bend collar automatic forming machine with same
CN105903826A (en) * 2016-05-20 2016-08-31 浙江工业大学 Thin-wall metal pipe expanding machine with automatic feeding device
CN107790529A (en) * 2017-09-21 2018-03-13 中国工程物理研究院总体工程研究所 A kind of thin footpath guiding-tube bend coalignment
CN108817515A (en) * 2018-06-28 2018-11-16 芜湖泰和管业股份有限公司 A kind of accurate spacing cutter device of metal bellows
CN109079520A (en) * 2018-06-22 2018-12-25 浙江和良智能装备有限公司 A kind of manufacturing equipment of EC adapter tube or electric expansion valve adapter tube
CN109079428A (en) * 2018-06-22 2018-12-25 浙江和良智能装备有限公司 A kind of manufacturing method of S adapter tube
CN109092927A (en) * 2018-06-22 2018-12-28 浙江长兴和良智能装备有限公司 A kind of manufacturing method of EC adapter tube or electric expansion valve adapter tube
CN109128849A (en) * 2018-06-22 2019-01-04 浙江长兴和良智能装备有限公司 A kind of production line of manufacture S adapter tube

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102989818B (en) * 2011-12-31 2015-11-18 奥美森智能装备股份有限公司 A kind of clamping device of Elliptical tube machine
CN102989818A (en) * 2011-12-31 2013-03-27 中山市奥美森工业有限公司 Clamping device of elliptical tube machine
CN102773361B (en) * 2012-07-09 2014-02-05 和和机械(张家港)有限公司 Manual feeding device used in full-automatic numerical control hydraulic pipe bender
CN102773361A (en) * 2012-07-09 2012-11-14 和和机械(张家港)有限公司 Manual feeding device used in full-automatic numerical control hydraulic pipe bender
CN104098257A (en) * 2013-04-03 2014-10-15 颜良德 Spiral transparent pipe pin-bending machine
CN104098257B (en) * 2013-04-03 2016-08-03 颜良德 Spiral bright pipe bending legs machine
CN103878267B (en) * 2013-11-29 2016-03-23 中山市奥美森工业有限公司 A kind of bending machine
CN103878267A (en) * 2013-11-29 2014-06-25 中山市奥美森工业有限公司 Pipe bending machine
CN105057764A (en) * 2015-07-30 2015-11-18 陕西百思特模具有限公司 Cutter bit and overlaying type short U-bend collar automatic forming machine with same
CN105903826A (en) * 2016-05-20 2016-08-31 浙江工业大学 Thin-wall metal pipe expanding machine with automatic feeding device
CN107790529A (en) * 2017-09-21 2018-03-13 中国工程物理研究院总体工程研究所 A kind of thin footpath guiding-tube bend coalignment
CN107790529B (en) * 2017-09-21 2019-10-29 中国工程物理研究院总体工程研究所 A kind of thin footpath guiding-tube bend coalignment
CN109079520A (en) * 2018-06-22 2018-12-25 浙江和良智能装备有限公司 A kind of manufacturing equipment of EC adapter tube or electric expansion valve adapter tube
CN109079428A (en) * 2018-06-22 2018-12-25 浙江和良智能装备有限公司 A kind of manufacturing method of S adapter tube
CN109092927A (en) * 2018-06-22 2018-12-28 浙江长兴和良智能装备有限公司 A kind of manufacturing method of EC adapter tube or electric expansion valve adapter tube
CN109128849A (en) * 2018-06-22 2019-01-04 浙江长兴和良智能装备有限公司 A kind of production line of manufacture S adapter tube
CN108817515A (en) * 2018-06-28 2018-11-16 芜湖泰和管业股份有限公司 A kind of accurate spacing cutter device of metal bellows

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GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20081224

Effective date of abandoning: 20080105