CN101444855A - Novel circular tube slitting mill - Google Patents
Novel circular tube slitting mill Download PDFInfo
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- CN101444855A CN101444855A CNA2008100802168A CN200810080216A CN101444855A CN 101444855 A CN101444855 A CN 101444855A CN A2008100802168 A CNA2008100802168 A CN A2008100802168A CN 200810080216 A CN200810080216 A CN 200810080216A CN 101444855 A CN101444855 A CN 101444855A
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Abstract
The invention discloses a novel circular-section tube slitting mill comprising transmission members respectively arranged on a transmission shaft and transmission members which are correspond to a disk shaft and connected with rotable loops located thereon. A hobbing device is arranged inside a radial sliding chute of the disk head face of the disk shaft, wherein, the hobbing device is provided with an internal circle that is a cam ring, and an external circle is a rotatable loop hobbing a bull gear and is installed on the external circle ring of the disk of the disk shaft; the rotatable loop, disk shaft and a stander are provided with a start-and-retract control device; and a clamping device is installed at the tubular product feeding end of the stander. As the rotatable loop directly rotates along the external circle of the disk shaft, the axial size is reduced, the stress condition is obviously improved and the vibration is avoided; as the start-and-retract control device is provided, accurate slitting moment of cluster is guaranteed at the time of starting, and start impact is avoided; when the hobbing device retracts, the device stops at a maximum retracting position of the cam ring; meanwhile, the clamping device is added and installed, thereby improving the stability and centering reliability for clamping tubular products.
Description
Technical field
The present invention relates to a kind of tubing cutting equipment, specifically relate to a kind of novel circular tube slitting mill, can effectively reduce the eccentric vibration tendency of rolling and cutting mechanism, overcome starting-impact, improve withdrawing moment accuracy and clamp the centering reliability.
Background technology
At present, be used for incising circular cross section tubing, or the slitting mill that adopts when blocking tubing on the pipe material production line, when not allowing the tubing rotation, its hobboing cutter must be around the revolution of tubing center, and hobboing cutter reaches the purpose of cutting off pipe along the rolling of pipe face and to central motion simultaneously.
In the technology for above-mentioned incising circular cross section tubing, as Chinese invention patent, its application number is disclosed in 200610012386.3 " circular cross-section tubing slitting mill ", the slitting mill dependable performance of Chan Shuing wherein, and working stability has reached good effect.But in actual applications, owing to have bigger axial distance between rolling cut device on the disc shaft of design and the travelling gear on the rotating ring, and the rotation mating surface of rotating ring and disc shaft is on the diameter of axle of disc shaft, but not on the disk outer ring, it is longer to cause rotating the cantilever of rolling and cutting mechanism outside frame, and stress is also bad, like this, if the mass eccentricity that has processing to produce can produce when rolling cut is worked radial vibration thereby the service life of having reduced cutting disc; In addition, because of clutch for often from state, in when starting, rotating ring only depends on disc shaft and its moment of friction to drive, because moment of friction is very little, the rotating ring starting is lagged behind, and causes the roller on the rolling cut device to clash into the convex wheel face and produce starting-impact; In addition, when rolling cut finished, the separation of the clutch in this slitting mill was constantly wayward; Behind withdrawing, the stop position of the relative cam ring of rolling cut device is not accurate enough, it is not enough to cause cutting disc to get out of the way distance, and hinders sending into once more of pipe to forge a knife easily, and has practical problems such as the weight of the clamping center of clamping device and rolling cut center difficulty, equipment is bigger.Therefore, must be improved and perfect.
Summary of the invention
In view of the situation of above-mentioned technology, the purpose of this invention is to provide a kind of improvement structure of circular cross-section tubing slitting mill.The present inventor is through further investigation, by analysis to existing equipment, produce when having proposed to solve rotation rolling and cutting mechanism arm length, starting impact, the separation of clutch is wayward constantly, the stop position of rolling cut device relative cam ring is not accurate enough behind the withdrawing, and the solution of problems such as the clamping center of clamping device and rolling cut center difficulty, finished the present invention on this basis.
For realizing its purpose, novel circular cross-section tubing slitting mill provided by the invention, comprise the driving member that is provided with respectively on the power transmission shaft with corresponding on the disc shaft with thereon rotating ring on the driving member that is connected; In the disk end face radial groove of described disc shaft the rolling cut device is installed; Wherein, it has an inner ring is cam ring, and the outer ring is that the rotating ring of a rolling cut gear wheel is installed on the position, disk outer ring of disc shaft; Starting and retract control device are installed on described rotating ring, disc shaft and frame; With at described frame tubing feeding end a clamping device is set.Therefore, directly rotate by rotating ring, further reduced axial dimension, and make meshing point on rotation mating surface, the gear wheel, cam ring point of application three close proximity the rolling cut device along the disk outer ring of disc shaft, stress be improved significantly, avoided vibration to take place; In addition, also start and retract control device, when guaranteeing starting by being provided with, the control rotating ring is driven run-in synchronism, has avoided starting-impact, and clutch suits constantly accurately, after helping rolling cut device withdrawing, be parked on the maximum withdrawing location point that is in relative cam ring; In addition, increase and be provided with clamping device, improved the stability and the centering reliability that clamp tubing.
In above-mentioned, the present invention relates to combination installation starting and retract control device on rotating ring, disc shaft and frame, comprise that rotating ring one longitudinal end has the slotted eye of a conducting and adjacent deep gouge, then on the sour jujube axle that is provided with in the slotted eye on rotating ring ratchet is installed and a spring leaf is set in described deep gouge and constitute ratchet mechanism; Described ratchet be 120 ° on the disk outer ring of corresponding disc shaft and be provided for three dihedral sour jujube grooves alternately cooperating or throw off; The other end of described ratchet with corresponding on frame, be provided with near switch near or away from.Help starting so synchronously steadily, withdrawing accurately is easy to control constantly.
In above-mentioned, tubing clamping device involved in the present invention comprises that the slideway dish that is fixed on the frame and its go up the cover plate of installation, be on slideway dish one side 120 ° of directions be provided with three radially slideway slide block is installed respectively; Between described slideway dish and the slide block return spring is installed; One end of this slide block is one and clamps mouth that the other end is installed roller; This pair of rollers is answered the clamping cam that has on the outer ring of described slideway dish and cover plate; Described clamping cam inner ring is the circumference cam ring that is joined end to end by three sections identical shrinkage curves, is installed with pivoted arm on the outer ring, is hinged and connected on the frame by hydraulic cylinder or cylinder.The stability and the centering reliability that clamp have been guaranteed.
According to characteristics of the present invention, mentioned rolling cut device except that above-mentioned employing hobboing cutter as the cutting knife, can be on the rolling cut device direct fixing lathe tool, can finish tubing equally and cut off.
In a word, novel circular cross-section tubing slitting mill provided by the invention, the good effect that has is:
1, the present invention gathers multinomial function with rotating ring, and allow it directly rotate along the disk outer ring of disc shaft, making the rotation rolling and cutting mechanism stretch out the outer jib-length of frame significantly reduces, both reduced the device fabrication cost, reduced the eccentric vibration tendency of rolling and cutting mechanism again, the service life that can improve cutting disc.
2, invented starting and retract control device, made starting synchronously steadily, withdrawing accurately is easy to control constantly.
3, on the frame body, clamping device is installed, has been improved the stability and the centering reliability that clamp.
Description of drawings
Fig. 1 is a front view of the present invention;
Fig. 2 is Fig. 1 left view;
Fig. 3 is Fig. 1 right view;
Fig. 4 is starting or detent positions reference diagram during near switch motion;
Fig. 5 is rolling cut detent positions reference diagram when carrying out.
The specific embodiment
Embodiment is described in detail the present invention below in conjunction with accompanying drawing:
By Fig. 1, Fig. 2, circular cross-section tubing slitting mill shown in Figure 3, comprise the frame 15 that is installed on the base 1, the lower position of this frame 15 is equipped with power transmission shaft 3; The output shaft of its power transmission shaft 3 one ends and motor 2 connects, and has reduced transmission link, has improved efficient, and makes equipment compact more.Described power transmission shaft 3 is provided with clutch 5 and is positioned at drive pinion 4 and the rolling cut pinion 6 that both sides are provided with; By bearing (not marking among the figure) disc shaft 10 of relative frame 15 rotations is installed at described upper rack 15 endoporus; Be positioned at fixed installation transmission gear wheel 14 on the disc shaft 10 between bearing; With the disk outer ring of this disc shaft 10 rotating ring 12 is installed.The outer ring of this rotating ring 12 is provided with rolling cut gear wheel 13; Rotating ring 12 inner rings are provided with cam ring 11.In the present embodiment, the transmission gear wheel 14 on the described disc shaft 10 and rolling cut gear wheel 13 respectively with power transmission shaft 3 on drive pinion 4 and the corresponding composition transmission mechanism of rolling cut pinion 6 driving members.On the cam ring 11 of described rotating ring 12 inner rings be installed in can interact in the radially-arranged chute of disk end face of disc shaft 10 and constitute rolling and cutting mechanisms to three rolling cut devices 7 of the synchronous shift reciprocately of center of circle direction; Be provided with withdrawing spring 24 between described rolling cut device 7 and the disc shaft 10, guarantee that rolling cut device 7 can freely not fall when stopping.In the present embodiment, then also be fixed with export orientation tube 9 on frame 15, the one end extend in disc shaft 10 holes, makes near the rolling cut position to be led by the tubing 8 of rolling cut.The cam ring 11 that rotating ring 12 has in above-mentioned is excessively to connect into a circumference cam ring that integral body is continuous by three sections same curve section head and the tail; Its cam ring 11 every section curves are divided into feed curved section and withdrawing curved section successively.When the rolling cut pipe, after the starting, during clutch 5 adhesives, rolling cut pinion 6 and drive pinion 4 are with the speed rotation.Because two pairs of intermeshed gear speed ratio differences make rotating ring 12 also produce relative to rotating in advance when rotating in the same way with disc shaft 10.Simultaneously the cam ring 11 of rotating ring 12 promote on the disc shafts 10 rolling cut device 7 and on hobboing cutter (among the figure mark) entad displacement incision pipe material carry out rolling cut.In the present embodiment, mentioned rolling cut device 7 concrete structures number are that rolling cut device in disclosed in 200610012386.3 " circular cross-section tubing slitting mill " is same structure with the application for a patent for invention of inventor's application.
In above-mentioned, can be a dolly of back and forth walking in orbit at tubulation production line upper bed-plate 1.
Obviously, according to application characteristic of the present invention, rolling cut device 7 except that above-mentioned employing hobboing cutter as the cutting knife, can be on rolling cut device 7 directly fixedly lathe tool come tubing is cut, can finish cut-out tubing equally.
In the present embodiment, the inner ring that utilizes described rotating ring 12 is a cam ring 11, and the outer ring is a rolling cut gear wheel 13, therefore, guaranteed that rotating ring 12 assembles multinomial function, obviously reduced the jib-length of its rotating part outside frame 15, and saved the device fabrication cost.Secondly, allow rotating ring 12 directly rotate and the rolling cut device 7 on it along the disk outer rings of disc shaft 10, further reduced axial dimension, and make the meshing point on rotation mating surface, the rolling cut gear wheel 13, the point of application three close proximity of 11 pairs of rolling cut devices 7 of cam ring, stress be improved significantly, weight of equipment has also obtained reduction.Because of its rotating part weight and cantilever size significantly reduce, effectively avoided vibration to take place.
In addition, according to actual conditions, the longitudinal end of rotating ring 12 in the present embodiment has the slotted eye of a conducting and adjacent deep gouge (all not marking among the figure); Slotted eye on described rotating ring 12 is provided with sour jujube axle 29, ratchet 30 is installed on it and a spring leaf 31 is set in described deep gouge to constitute ratchet mechanism.Be 120 ° three dihedral sour jujube grooves 25 are set in the present embodiment, with on the disk outer ring of described ratchet 30 corresponding disc shafts 10.Its effect is when the ratchet on the rotating ring 12 30 is rotated to the position of this sour jujube groove 25, because ratchet 30 1 ends are subjected to the effect of spring leaf 31, this ratchet 30 is subjected to the effect end and promptly is retracted in the sour jujube groove 25; And ratchet 30 other ends lift, and the lifting of this ratchet 30 corrects the starting and the retract control device near switch 23 corresponding compositions of installing on the position frame 15 therewith.Described near the circular path of the detecting head on the switch 23 over against ratchet 30 outer ends rotation process.
In the present embodiment, by the feeding end of frame 15 a tubing clamping device is installed.Described tubing clamping device comprises the slideway dish 16 that is fixed on the frame 15, be on slideway dish 16 1 sides 120 ° be provided with three radially slideway slide block 21 is installed respectively; Return spring 26 is installed between described slideway dish 16 and the slide block 21, and slideway dish 16 and the cover plate of installing with one heart on it 18 are the slide-and-guide of slide block 21 jointly; One end of this slide block 21 is as clamping mouth, and the other end is installed rollers 20 by bearing pin 19; The clamping cam 17 that has on the outer ring of these roller 20 corresponding described slideway dishes 16 and cover plate 18; Then clamping cam 17 inner rings is the circumference cam rings that joined end to end by three sections identical shrinkage curves, is installed with pivoted arm 28 on the outer ring, is hinged and connected on the frame 15 by hydraulic cylinder 27 or cylinder.Therefore, this roller 20 rotates with respect to the clamping cam 17 that has on slideway dish 16 and cover plate 18 outer rings.In the time will clamping tubing 8, hydraulic cylinder 27 elongations promote pivoted arm 28 related clamping cams 17 and rotate together, and it clamps the tight roller 20 of cam 17 convex wheel face compression clamps and forces three slide blocks 21, simultaneously compress automatic centering clamping tube 8 to pipe 8 along the radially slideway on the slideway dish 16.In the time will unclamping pipe 8, hydraulic cylinder 27 withdrawals, pulling pivoted arm 28 makes and clamps cam 17 revolutions, and return spring 26 promotes slide block 21 rollbacks.In the present embodiment, the rotation that clamps cam 17 also can directly adopt Electrohydraulic push rod to promote, and can only power on reciprocating slitting mill on the tubulation production line like this to guarantee that rolling cut carries out.
See that Fig. 4 has provided starting or detent positions reference diagram during near switch motion.In starting constantly, clutch 5 is in released state, and rotating ring 12 does not have driving and do not rotate, and disc shaft 10 rotates; Because disc shaft 10 and on the relative rotating rings 12 of sour jujube groove 25 rotate; When the sour jujube groove 25 on the disc shaft 10 rotates to ratchet 30 positions of rotating ring 12, the effect that ratchet 30 on the rotating ring 12 is subjected to spring leaf 31 recedes in the sour jujube groove 25 the one end, ratchet 30 other ends lift with corresponding near switch 23, be the rotating ring 12 starting application of forces promptly, make rotating ring 12 constitute startup and withdrawing controlling organization with disc shaft 10 with the speed rotation at once by the 25 effect ratchets 30 of the sour jujube groove on the disc shaft 10.So promptly avoided starting-impact, kept rolling cut device 7 to be in the maximum withdrawing position of rotating ring 12 cam rings 11 again, made things convenient for tubing 8 to send into, the generation of the phenomenon that prevents to forge a knife.In addition, utilize export orientation tube 9 to be fixed on the frame 15, can make tubing 8 not contact the inwall of disc shaft 10, guarantee the guiding of sending into of tubing 8.
Fig. 5 has provided rolling cut detent positions reference diagram when carrying out.After assigning the rolling cut order by gauge tap, clutch 5 begins to engage; In rolling cut feed process, because rotating ring 12 rotates in advance relative to disc shaft 10, make ratchet 30 leave sour jujube groove 25, the other end of ratchet 30 is failure to actuate near switch 23 away near switch 23 at this moment.After rolling cut is finished, when the withdrawing curved section that makes rolling cut device 7 enter rotating ring 12 cam rings 11 retreats to maximum position, ratchet 30 runs into place's sour jujube groove 25, reset by spring leaf 31 and to make ratchet 30 accurately fall into sour jujube groove 25, the other end of ratchet 30 lifts and approaches to its operating distance near switch 23, send signal near switch 23 clutch 5 is separated, rotating ring 12 runs out of steam and stops operating.Rotating ring 12 makes itself and disc shaft 10 rotate with speed by the ratchet mechanism application of force again, waits for next actuation cycle, enters Fig. 4 state.
In the present invention, the motor 2 of present embodiment drive unit directly docks the driving that links to each other with power transmission shaft 3, has so both reduced transmission link, has improved efficient, has reduced equipment size and weight again.
In above-mentioned, key of the present invention is that the inner ring at rotating ring 12 is provided with cam ring 11, the outer ring is provided with rolling cut gear wheel 13, allow rotating ring 12 gather multinomial function, obviously reduced the jib-length of its rotating part outside frame 15, both reduce the device fabrication cost, reduced the eccentric vibration tendency of rolling and cutting mechanism again, the service life that can improve cutting disc.Secondly, allow rotating ring 12 directly rotate along the disk outer ring of disc shaft 10, further reduced axial dimension, and make the meshing point on rotation mating surface, the rolling cut gear wheel 13, the point of application three close proximity of 11 pairs of rolling cut devices 7 of cam ring, stress be improved significantly, weight of equipment has also reduced a lot.Because of its rotating part weight and cantilever size significantly reduce, avoided vibration to take place.
Another key of the present invention is to have adopted ratchet mechanism and near switch 23 engagement clutch 5 conduct starting and retract control device, made starting synchronously steadily, and the withdrawing moment accurately is easy to control.In addition, be directly installed on the clamping device on the frame 15, improved the stability and the centering reliability that clamp.
Claims (5)
1, a kind of novel circular cross-section tubing slitting mill, comprise power transmission shaft and on the driving member that is provided with respectively with the transmission mechanism of corresponding driving member composition on the rotating ring on it on the disc shaft be connected with drive unit, in the disk end face radial groove of described disc shaft the rolling cut device is installed; It is characterized in that it has an inner ring is cam ring (11), the outer ring is that the rotating ring (12) of a rolling cut gear wheel (13) is installed on disc shaft (10) position, outer ring; Go up installation starting and retract control device in described rotating ring (12), disc shaft (11) and frame (15); With at described frame (15) tubing feeding end a clamping device is set.
2, by the described novel circular cross-section tubing slitting mill of claim 1, it is characterized in that described starting and retract control device, a longitudinal end that comprises rotating ring (12) has the slotted eye of a conducting and adjacent deep gouge, then in the slotted eye on rotating ring (12) sour jujube axle (29) is set, ratchet (30) is housed on it and a spring leaf (31) is set in described deep gouge and constitute ratchet mechanism; Be 120 ° of three dihedral sour jujube grooves (25) that are provided for alternately cooperating or throwing off on described ratchet (30) and pairing disc shaft (10) outer ring; The other end of described ratchet (30) with corresponding frame (15) go up to be provided with near switch (23) near or away from.
3, by the described novel circular cross-section tubing slitting mill of claim 1, it is characterized in that described tubing clamping device, the cover plate (18) that comprises the slideway dish (16) that is fixed on the frame (15) and install on it, be on it 120 ° be provided with three radially slideway slide block (21) is installed respectively; Then between slideway dish (16) and slide block (21), return spring (26) is installed; One end of this slide block (21) is to clamp mouth, and the other end is installed roller (20); The clamping cam (17) that has on the outer ring of corresponding described slideway dish of this roller (20) (16) and cover plate (18); Described clamping cam (17) inner ring is the circumference cam ring that is joined end to end by three sections identical shrinkage curves, is installed with pivoted arm (25) on the outer ring, is hinged and connected on the frame (15) by hydraulic cylinder (24) or cylinder.
4,, it is characterized in that the cutting knife in the rolling cut device (7) is to adopt hobboing cutter, or go up directly fixedly lathe tool at rolling cut device (7) by the described novel circular cross-section tubing slitting mill of claim 1.
5, by the described novel circular cross-section tubing slitting mill of claim 1, it is characterized in that described drive unit directly docks with power transmission shaft (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100802168A CN101444855B (en) | 2008-12-17 | 2008-12-17 | Novel circular tube slitting mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100802168A CN101444855B (en) | 2008-12-17 | 2008-12-17 | Novel circular tube slitting mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101444855A true CN101444855A (en) | 2009-06-03 |
| CN101444855B CN101444855B (en) | 2011-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100802168A Expired - Fee Related CN101444855B (en) | 2008-12-17 | 2008-12-17 | Novel circular tube slitting mill |
Country Status (1)
| Country | Link |
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| CN (1) | CN101444855B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102990698A (en) * | 2012-11-17 | 2013-03-27 | 中山市美捷时包装制品有限公司 | Tube cutting device |
| CN103157847A (en) * | 2011-12-08 | 2013-06-19 | 洛阳锐腾机械技术有限公司 | Tubing chipless cutting device |
| CN105397173A (en) * | 2015-11-14 | 2016-03-16 | 浙江恩华新材料科技有限公司 | Pipe cutting machine |
| CN105436598A (en) * | 2015-12-27 | 2016-03-30 | 天津尚吉液压设备有限公司 | Online automatic pipe cutting device |
| CN106270717A (en) * | 2016-10-14 | 2017-01-04 | 东莞市金午宏业机械设备有限公司 | Full automatic cutting machine |
| CN107186269A (en) * | 2017-06-16 | 2017-09-22 | 江阴兴澄特种钢铁有限公司 | A kind of cutting for preventing round steel to be crushed, the disconnected dual-purpose apparatus of car and its working method |
| CN107282982A (en) * | 2017-07-27 | 2017-10-24 | 天津国际铁工焊接装备有限公司 | A kind of pipe hobboing cutter cutter device |
| CN108104761A (en) * | 2018-01-17 | 2018-06-01 | 宋协翠 | For the application method of the circular cutout device of four ram preventer of coiled tubing |
| CN112518014A (en) * | 2021-01-04 | 2021-03-19 | 韦秋香 | Full-automatic intelligent control's electronic steel pipe cutting machine device |
| CN113182578A (en) * | 2021-04-08 | 2021-07-30 | 胡飞黄 | Spring washer production and manufacturing equipment for high-end equipment manufacturing industry |
-
2008
- 2008-12-17 CN CN2008100802168A patent/CN101444855B/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103157847A (en) * | 2011-12-08 | 2013-06-19 | 洛阳锐腾机械技术有限公司 | Tubing chipless cutting device |
| CN103157847B (en) * | 2011-12-08 | 2016-03-02 | 洛阳锐腾机械技术有限公司 | Pipe no-chip shearing device |
| CN102990698B (en) * | 2012-11-17 | 2015-03-18 | 中山市美捷时包装制品有限公司 | Tube cutting device |
| CN102990698A (en) * | 2012-11-17 | 2013-03-27 | 中山市美捷时包装制品有限公司 | Tube cutting device |
| CN105397173A (en) * | 2015-11-14 | 2016-03-16 | 浙江恩华新材料科技有限公司 | Pipe cutting machine |
| CN105397173B (en) * | 2015-11-14 | 2017-11-10 | 江苏福吉特管业有限公司 | A kind of pipe cutting machine |
| CN105436598A (en) * | 2015-12-27 | 2016-03-30 | 天津尚吉液压设备有限公司 | Online automatic pipe cutting device |
| CN106270717B (en) * | 2016-10-14 | 2018-07-03 | 东莞市金午宏业机械设备有限公司 | Full automatic cutting machine |
| CN106270717A (en) * | 2016-10-14 | 2017-01-04 | 东莞市金午宏业机械设备有限公司 | Full automatic cutting machine |
| CN107186269A (en) * | 2017-06-16 | 2017-09-22 | 江阴兴澄特种钢铁有限公司 | A kind of cutting for preventing round steel to be crushed, the disconnected dual-purpose apparatus of car and its working method |
| CN107282982A (en) * | 2017-07-27 | 2017-10-24 | 天津国际铁工焊接装备有限公司 | A kind of pipe hobboing cutter cutter device |
| CN107282982B (en) * | 2017-07-27 | 2023-09-22 | 天津国际铁工焊接装备有限公司 | Circular tube hob cutting device |
| CN108104761A (en) * | 2018-01-17 | 2018-06-01 | 宋协翠 | For the application method of the circular cutout device of four ram preventer of coiled tubing |
| CN112518014A (en) * | 2021-01-04 | 2021-03-19 | 韦秋香 | Full-automatic intelligent control's electronic steel pipe cutting machine device |
| CN112518014B (en) * | 2021-01-04 | 2021-08-03 | 扬州市悦霞智能科技有限公司 | Full-automatic intelligent control's electronic steel pipe cutting machine device |
| CN113182578A (en) * | 2021-04-08 | 2021-07-30 | 胡飞黄 | Spring washer production and manufacturing equipment for high-end equipment manufacturing industry |
| CN113182578B (en) * | 2021-04-08 | 2022-06-14 | 浙江艾坷迷智能装备科技有限公司 | Spring washer production and manufacturing equipment for high-end equipment manufacturing industry |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101444855B (en) | 2011-08-03 |
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Granted publication date: 20110803 Termination date: 20131217 |