CN108436002B - Screw pipe machine - Google Patents
Screw pipe machine Download PDFInfo
- Publication number
- CN108436002B CN108436002B CN201810278587.0A CN201810278587A CN108436002B CN 108436002 B CN108436002 B CN 108436002B CN 201810278587 A CN201810278587 A CN 201810278587A CN 108436002 B CN108436002 B CN 108436002B
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- Prior art keywords
- thread forming
- clamping
- carriage
- frame
- traction mechanism
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- 238000003754 machining Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000010687 lubricating oil Substances 0.000 description 9
- 238000001816 cooling Methods 0.000 description 6
- 239000003921 oil Substances 0.000 description 5
- 238000005461 lubrication Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 239000005068 cooling lubricant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H3/00—Making helical bodies or bodies having parts of helical shape
- B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
- B21H3/04—Making by means of profiled-rolls or die rolls
-
- 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
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/02—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
- B21D3/05—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers arranged on axes rectangular to the path of the work
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
The invention discloses a thread pipe machine, which comprises a frame and a thread forming mechanism arranged on the frame, wherein an external thread forming cutter is arranged on the thread forming mechanism. The front traction mechanism and the rear traction mechanism of the threaded pipe machine operate independently and do not interfere with each other, and alternately traction the threaded pipe, so that the threaded pipe is continuously and uninterruptedly processed by the thread forming mechanism, and the production efficiency is high.
Description
Technical Field
The invention relates to the technical field of pipe machining mechanical equipment, in particular to a threaded pipe machine.
Background
At present, the existing thread pipe machine comprises a thread forming mechanism, an external thread forming cutter is arranged on the thread forming mechanism, and a substitute processed pipe is rolled into a spiral corrugated pipe by the external thread forming cutter when passing through the thread forming mechanism, so that the surface area of the pipe is increased, and the heat exchange efficiency of the pipe is improved.
However, the threaded pipe machine moves by pulling the substitute processing pipe through the traction structure, the traction structure further comprises a ball screw nut pair, the ball screw nut pair continuously moves in a high-speed and load-bearing state and needs lubricating oil for lubrication and heat dissipation, and as the ball screw nut pair is exposed, the lubricating oil is usually flushed away by cooling lubricating oil used during pipe processing, the ball screw nut pair is not timely or insufficiently lubricated for causing faults, so that the threaded pipe machine is high in maintenance rate, low in production efficiency and short in service life.
Disclosure of Invention
The invention aims to overcome the defects of reduced production efficiency and short service life, and provides a threaded pipe machine which is simple and reasonable in structure, high in production efficiency and long in service life.
The purpose of the invention is realized in the following way:
the thread tube machine comprises a frame and a thread forming mechanism arranged on the frame, wherein an external thread forming cutter is arranged on the thread forming mechanism, and the thread tube machine is characterized by further comprising a control device, a front traction mechanism and a rear traction mechanism, wherein the front traction mechanism and the rear traction mechanism are arranged on the frame in a sliding mode and are arranged at the rear of the thread forming mechanism in a front-rear sequence, and the control device is respectively and electrically connected with the front traction mechanism, the rear traction mechanism and the external thread forming cutter, so that the thread forming mechanism alternately pulls a threaded tube in sequence when processing the threaded tube. The front traction mechanism and the rear traction mechanism of the threaded pipe machine operate independently and do not interfere with each other, and alternately traction the threaded pipe, so that the threaded pipe is continuously and uninterruptedly processed by the thread forming mechanism, and the production efficiency is high.
The aim of the invention can be also solved by adopting the following technical measures:
as a more specific scheme, the front traction mechanism, the rear traction mechanism and the thread forming mechanism are respectively provided with clamping openings, and the central lines of the clamping openings are overlapped. When the threaded pipe machine is used for drawing threaded pipes, the threaded pipes are symmetrically and uniformly stressed, and the quality of the threaded pipes is improved.
As a more specific scheme, the front traction mechanism and the rear traction mechanism respectively comprise a motor, a ball screw, a screw nut, a carriage and a clamping mechanism, wherein the motor drives the ball screw nut pair to rotate, the motor drives the ball screw nut pair to be arranged on the frame, the carriage is arranged on the ball screw nut pair, a clamping opening is formed in the clamping mechanism, the clamping mechanism is arranged at the top of the carriage, and the motor is electrically connected with the control device. The front traction mechanism and the rear traction mechanism are both provided with a control device, the working state is accurate and stable, and the operation is convenient
As a more specific scheme, the frame is provided with guide rails corresponding to the moving routes of the two ends of the carriage, the two ends of the carriage are respectively provided with sliding blocks, and the carriage slides on the guide rails through the sliding blocks. The weights of the front traction mechanism, the rear traction mechanism and the pipe are almost born by the guide rail and the sliding block, the load of the ball screw nut pair is reduced, the heat dissipation is reduced, the failure is not easy to happen, and the service life is prolonged
As a more specific scheme, a baffle plate is further arranged on the frame, penetrates through the carriage and shields the guide rail, the sliding block and the ball screw nut pair. The baffle blocks the cooling lubricating oil of the pipe from entering between the guide rail and the sliding block or in the ball screw nut pair, so that lubrication is affected.
As a more specific scheme, the clamping mechanism comprises a clamping oil cylinder and a clamp with a clamping opening, the clamping mechanism is arranged on the carriage through a fixing frame, the clamp is arranged in the fixing frame, and the clamping oil cylinder drives the clamp to adjust the size of the clamping opening. The clamping mouth is used for clamping threaded pipes with different pipe diameters, so that the processing range of the threaded pipe machine is enlarged.
As a more specific scheme, the sizes and the horizontal heights of the clamps of the front traction mechanism and the rear traction mechanism are the same, and the clamps are symmetrically and uniformly stressed when clamping the threaded pipe, so that the quality of the threaded pipe is improved.
As a more specific scheme, the thread forming mechanism comprises a spindle motor, a reduction gearbox, a hollow shaft, a hollow high-speed rotating cylinder and a chuck, wherein the spindle motor is used for changing the speed through the reduction gearbox and driving the hollow shaft to rotate through a synchronous belt, the two ends of the hollow shaft are respectively connected with the high-speed rotating cylinder and the chuck, and the chuck is provided with the external thread forming tool. The high-speed rotating cylinder controls the clamping or loosening degree of the external thread forming cutter on the chuck to ensure the depth of the spiral groove of the hollow product to be rolled.
As more specific scheme, be provided with the casing on the screw forming mechanism, the casing is extended to high-speed rotatory hydro-cylinder one end, and the one end that hollow axle connected the chuck extends the casing, and casing corresponds chuck one side and still is equipped with protection device (8), and protection device (8) include cylinder and safety cover, and the cylinder is fixed on the casing, and the cylinder contracts the end and connects the safety cover, and the safety cover covers the chuck, and corresponds high-speed rotatory hydro-cylinder and takes the place of the processing tubular product on the safety cover respectively and leave the opening. The safety cover prevents the cooling lubricating oil of fender tubular product from splashing, simultaneously, rises when appropriate, is convenient for change external screw thread shaping cutter.
As more specific scheme, still include straighter mechanism, straighter mechanism sets up at screw thread forming mechanism front end, and set up in the frame, straighter mechanism includes a plurality of gyro wheels and the alignment jig of taking the arc recess, partly gyro wheel level sets up and divide into left and right sides two rows and constitute the level straighter subassembly with rotatable setting at the alignment jig rear end, another part gyro wheel is vertical to set up and divide into upper and lower two rows and constitute the perpendicular straighter subassembly with rotatable setting at the alignment jig front end, the interval between two rows of gyro wheels of level setting and between two rows of gyro wheels of vertical setting is adjustable. The straighter mechanism pushes the substitute processed pipe to the thread forming mechanism, ensures that the processed pipe is in a straight line, and improves the processing quality of the threaded pipe.
The beneficial effects of the invention are as follows:
(1) The front traction mechanism and the rear traction mechanism of the threaded pipe machine are mutually independent and do not interfere with each other, and the front traction mechanism and the rear traction mechanism are controlled by the control device to alternately drag the threaded pipe, so that the threaded pipe is continuously and uninterruptedly processed by the thread forming mechanism, the production efficiency is high, and the operation is stable and accurate.
(2) Secondly, the straightening mechanism straightens the pipe to be processed, the sizes and the horizontal heights of clamps of the front traction mechanism and the rear traction mechanism are the same, the center lines of clamping openings on the front traction mechanism, the rear traction mechanism and the thread forming mechanism are coincident, and the design ensures that the threaded pipe is symmetrically and uniformly stressed when in traction, thereby being beneficial to improving the quality of the threaded pipe.
(3) Furthermore, the design of the guide rail and the sliding block lightens the load of the ball screw and the screw nut, so that the ball screw and the screw nut are not easy to break down, and the service life of the ball screw and the screw nut is prolonged; the baffle blocks the cooling lubricating oil of tubular product from entering between guide rail and slider, ball and the screw nut, influences lubrication.
(4) In addition, the high-speed rotating oil cylinder controls the clamping or loosening degree of the external thread forming cutter on the chuck to ensure the depth of the spiral groove of the hollow product to be rolled, the safety cover prevents the cooling lubricating oil of the baffle pipe from splashing, and meanwhile, the safety cover is lifted when appropriate, so that the external thread forming cutter can be replaced conveniently.
Drawings
Fig. 1 is a schematic structural view of a screw machine according to the present invention (with baffles omitted).
Fig. 2 is a schematic structural view (another view) of the screw machine according to the present invention.
Fig. 3 is a front view of the front traction mechanism and the rear traction mechanism.
Fig. 4 is a schematic perspective view of the front traction mechanism and the rear traction mechanism.
Fig. 5 is a schematic side structural view of the front traction mechanism and the rear traction mechanism.
Fig. 6 is an enlarged view at a in fig. 1.
Fig. 7 is a schematic cross-sectional structure of the screw forming mechanism.
Fig. 8 is a schematic structural view of a housing of the screw forming mechanism and a protector (8).
Description of the embodiments
The invention is further described below with reference to the accompanying drawings and examples:
in a first embodiment, referring to fig. 1-8, a thread forming machine comprises a frame 1, a thread forming mechanism 3, a straightening mechanism 2, a front traction mechanism 4, a rear traction mechanism 5 and a control device 6, wherein the thread forming mechanism 3, the straightening mechanism 2, the front traction mechanism 4, the rear traction mechanism 5 and the control device 6 are arranged on the frame 1 in a sliding manner and in a front-back sequence, and are positioned behind the thread forming mechanism 3, and the control device 6 is respectively and electrically connected with the front traction mechanism 4, the rear traction mechanism 5 and an external thread forming cutter 36, so that the thread forming mechanism 3 can alternately draw the thread when processing the thread.
As shown in fig. 3-5, the front traction mechanism 4 and the rear traction mechanism 5 respectively include a motor 41, a ball screw nut pair 42, a carriage 43 and a clamping mechanism 7, the motor 41 drives the ball screw nut pair 42 to rotate, the motor 41 and the carriage are arranged on the frame 1 together, the carriage 43 is arranged on the ball screw nut pair 42, a clamping opening is arranged on the clamping mechanism 7, the clamping mechanism 7 is arranged at the top of the carriage 43, and the motor 41 is electrically connected with the control device 6. The front traction mechanism 4 and the rear traction mechanism 5 are arranged on the same straight line, and the size and the horizontal height of the clamping mechanism 7 are the same.
As shown in fig. 3 and 4, the clamping mechanism 7 includes a clamping cylinder 71 and a clamp 72 with a clamping opening 74, the clamping mechanism 7 is disposed on the carriage 43 through a fixing frame, the clamp 72 is disposed in the fixing frame 73, and the clamping cylinder 71 drives the clamp 72 to adjust the size of the clamping opening 74. The front traction mechanism 4, the rear traction mechanism 5 and the thread forming mechanism 3 are respectively provided with clamping ports 74, and the central lines of the clamping ports 74 are overlapped.
As shown in fig. 1, 5 and 6, the frame 1 is provided with a guide rail 11 corresponding to a moving route of two ends of the carriage 43, two ends of the carriage 43 are respectively provided with a sliding block 12, and the carriage 43 sits on the guide rail 11 through the sliding blocks 12 and slides. The frame 1 is also provided with a baffle 13, and the baffle 13 passes through the carriage 43 and shields the guide rail 11, the sliding block 12 and the ball screw nut pair 42. In this embodiment, the carriage 43 is formed with a hollow part 430 in the shape of a letter "M" and the baffle 13 is in the shape of an M, which separates the lubricating oil of the guide rail 11, the slider 12 and the ball screw nut pair 42 from the cooling lubricating oil of the drawn threaded tube, thereby ensuring that the guide rail 11 and the slider 12 or the ball screw nut pair 42 are sufficiently lubricated, ensuring smooth movement and improving service life.
As shown in fig. 7, the thread forming mechanism 3 includes a spindle motor 31, a reduction gearbox 32, a hollow shaft 33, a hollow high-speed rotating cylinder 34 and a chuck 35, the spindle motor 31 is variable in speed through the reduction gearbox 32 and drives the hollow shaft 33 to rotate through a synchronous belt, two ends of the hollow shaft 33 are respectively connected with the high-speed rotating cylinder 34 and the chuck 35, the chuck 35 is provided with the external thread forming tool 36, the external thread forming tool 36 is a rolling roller, and the high-speed rotating cylinder 34 controls the clamping or loosening degree of the rolling roller to control the depth of the spiral groove of the threaded pipe.
As shown in fig. 8, the screw thread forming mechanism 3 is provided with a casing 30, one end of the high-speed rotating cylinder 34 extends out of the casing 30, the hollow shaft 33 is connected with one end of the chuck 35 to extend out of the casing 30, one side of the casing 30 corresponding to the chuck 35 is also provided with a protecting device (8), the protecting device (8) 8 comprises an air cylinder 81 and a safety cover 82, the air cylinder 81 is fixed on the casing 30, the shrinking end of the air cylinder 81 is connected with the safety cover 82, the safety cover 82 covers the chuck 35, and openings are reserved on the safety cover 82 corresponding to the high-speed rotating cylinder 34 and the machining tube respectively. The safety cover 82 prevents the cooling lubricant of the stopper pipe from splashing, improves the quality and safety of the working environment, and at the same time, the safety cover 82 is lifted up when appropriate, facilitating the replacement of the male thread forming cutter 36.
As shown in fig. 1 and 2, the straightening mechanism 2 is disposed at the front end of the thread forming mechanism 3 and is disposed on the frame 1, the straightening mechanism 2 includes a plurality of rollers 21 with arc grooves and an adjusting frame 22, a part of the rollers 21 are disposed horizontally and divided into left and right rows to be rotatably disposed at the rear end of the adjusting frame 22 to form a horizontal straightening assembly 23, the other part of the rollers 21 are disposed vertically and divided into upper and lower rows to be rotatably disposed at the front end of the adjusting frame 22 to form a vertical straightening assembly 24, and the space between the two rows of rollers 21 disposed horizontally and between the two rows of rollers 21 disposed vertically is adjustable.
The substitute processing pipe is straightened by the straightening mechanism 2 and then enters the high-speed rotating oil cylinder 34, then passes through the hollow shaft 33 and is inserted into the chuck 35, the high-speed rotating oil cylinder 34 controls the chuck 35 to clamp or loosen, and further controls the depth of the external thread forming cutter 36 for rolling the substitute processing pipe, the spindle motor 31 drives the hollow shaft 33 to drive the chuck 35 to rotate, the front traction mechanism 4 and the rear traction mechanism 5 alternately drag the substitute processing pipe to pass through the chuck 35, and the substitute processing pipe is processed into a threaded pipe.
In this embodiment, the spindle motor 31 and the motor 41 are both servo motors 41, the control device 6 further includes a control screen 61, the spindle motor 31, the motor 41, the clamping cylinder 71, the cylinder 81 and the high-speed rotating cylinder 34 are controlled by the control device 6, data of the data are fed back to the control screen 61, and the control screen 61 can directly control the screw machine, so that the purpose of accurate control is achieved, and the degree of automation is high.
Claims (7)
1. The thread tube machine comprises a frame (1) and a thread forming mechanism (3) arranged on the frame (1), wherein an external thread forming cutter (36) is arranged on the thread forming mechanism (3), and the thread tube machine is characterized by further comprising a control device (6), a front traction mechanism (4) and a rear traction mechanism (5), wherein the front traction mechanism (4) and the rear traction mechanism (5) are arranged on the frame (1) in a sliding mode in a front-back sequence and are positioned behind the thread forming mechanism (3), and the control device (6) is respectively and electrically connected with the front traction mechanism (4), the rear traction mechanism (5) and the external thread forming cutter (36) so that the thread forming mechanism (3) can alternately drag a thread tube in sequence while processing the thread tube;
the front traction mechanism (4) and the rear traction mechanism (5) respectively comprise a motor (41), a ball screw nut pair (42), a carriage (43) and a clamping mechanism (7), wherein the motor (41) drives the ball screw nut pair (42) to rotate, the motor and the carriage are arranged on the frame (1), the carriage (43) is arranged on the ball screw nut pair (42), a clamping opening (74) is formed in the clamping mechanism (7), the clamping mechanism (7) is arranged at the top of the carriage (43), and the motor (41) is electrically connected with the control device (6);
the frame (1) is provided with guide rails (11) corresponding to the moving routes of the two ends of the carriage (43), the two ends of the carriage (43) are respectively provided with sliding blocks (12), and the carriage (43) slides on the guide rails (11) through the sliding blocks (12);
a baffle (13) is further arranged on the frame (1), and the baffle (13) passes through the carriage (43) and shields the guide rail (11), the sliding block (12) and the ball screw nut pair (42);
a door-shaped hollowed-out part (430) is formed in the carriage (43), and the baffle plate (13) is M-shaped.
2. A machine according to claim 1, characterized in that the front traction mechanism (4), the rear traction mechanism (5) and the thread forming mechanism (3) are respectively provided with clamping openings (74), and the central lines of the clamping openings (74) are coincident.
3. The thread pipe machine according to claim 1, wherein the clamping mechanism (7) comprises a clamping cylinder (71) and a clamp (72) with a clamping opening (74), the clamping mechanism (7) is arranged on the carriage (43) through a fixing frame (73), the clamp (72) is arranged in the fixing frame (73), and the clamping cylinder (71) drives the clamp (72) to adjust the size of the clamping opening (74).
4. A machine according to claim 3, characterized in that the clamps (72) of the front and rear traction means are of the same size and level.
5. The thread tube machine according to claim 1, wherein the thread forming mechanism (3) comprises a spindle motor (31), a reduction gearbox (32), a hollow shaft (33), a hollow high-speed rotating cylinder (34) and a chuck (35), the spindle motor (31) is variable in speed through the reduction gearbox (32) and drives the hollow shaft (33) to rotate through a synchronous belt, two ends of the hollow shaft (33) are respectively connected with the high-speed rotating cylinder (34) and the chuck (35), and the chuck (35) is provided with the external thread forming tool (36).
6. The thread pipe machine according to claim 5, wherein the thread forming mechanism (3) is provided with a shell (30), one end of the high-speed rotating cylinder (34) extends out of the shell (30), the hollow shaft (33) is connected with one end of the chuck (35) to extend out of the shell (30), one side of the shell (30) corresponding to the chuck (35) is also provided with a protecting device (8), the protecting device (8) comprises an air cylinder (81) and a safety cover (82), the air cylinder (81) is fixed on the shell (30), the air cylinder (81) is connected with the safety cover (82) in a shrinking end, the safety cover (82) covers the chuck (35), and openings are reserved on the safety cover (82) corresponding to the high-speed rotating cylinder (34) and the machining pipe respectively.
7. The thread tube machine according to claim 1, further comprising a straightening mechanism (2), wherein the straightening mechanism (2) is arranged at the front end of the thread forming mechanism (3) and is arranged on the frame (1), the straightening mechanism (2) comprises a plurality of rollers (21) with arc grooves and an adjusting frame (22), one part of the rollers (21) is horizontally arranged and is divided into two rows to be rotatably arranged at the rear end of the adjusting frame (22) to form a horizontal straightening component (23), the other part of the rollers (21) is vertically arranged and is divided into two rows to be rotatably arranged at the front end of the adjusting frame (22) to form a vertical straightening component (24), and the distance between the two rows of rollers (21) which are horizontally arranged and between the two rows of rollers (21) which are vertically arranged is adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810278587.0A CN108436002B (en) | 2018-03-31 | 2018-03-31 | Screw pipe machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810278587.0A CN108436002B (en) | 2018-03-31 | 2018-03-31 | Screw pipe machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108436002A CN108436002A (en) | 2018-08-24 |
| CN108436002B true CN108436002B (en) | 2024-02-13 |
Family
ID=63197861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810278587.0A Active CN108436002B (en) | 2018-03-31 | 2018-03-31 | Screw pipe machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108436002B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113977907B (en) * | 2021-10-29 | 2023-12-05 | 重庆伟星新型建材有限公司 | Pipe traction device and traction method |
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| CN104668669A (en) * | 2015-03-10 | 2015-06-03 | 柳州豪姆机械有限公司 | Irrotational anchor thread machining device for over-length cable |
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| CN205341573U (en) * | 2016-02-26 | 2016-06-29 | 邢台市檀运国机械制造有限公司 | A straightening mechanism that is used for high -speed roll extrusion formula nail machine |
| CN206254467U (en) * | 2016-12-16 | 2017-06-16 | 山东宝泰隔热材料有限公司 | A kind of haulage gear of heat insulating strip production hauling machine |
| CN107127281A (en) * | 2017-06-06 | 2017-09-05 | 佛山市顺德区莱雄机械设备有限公司 | The long pipe threading machine of multi-head numerical control |
| CN206998275U (en) * | 2017-08-08 | 2018-02-13 | 合肥瑞登机械设备有限公司 | There is bits sawing sheet pipe end double integrally forming machine |
| CN207982192U (en) * | 2018-03-31 | 2018-10-19 | 佛山市顺德区鑫雷节能设备有限公司 | Pipe threading machine |
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| KR20020091881A (en) * | 2001-06-01 | 2002-12-11 | 주식회사 대륭산업 | Device of manufacture screw copper pipe |
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| CN202283575U (en) * | 2011-10-08 | 2012-06-27 | 宁波新州焊接设备有限公司 | Mechanism for straightening reinforcing steel bar |
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| CN103612125A (en) * | 2013-11-07 | 2014-03-05 | 大连华根机械有限公司 | Novel workbench sealing structure for machining center |
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| CN104668669A (en) * | 2015-03-10 | 2015-06-03 | 柳州豪姆机械有限公司 | Irrotational anchor thread machining device for over-length cable |
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| CN206998275U (en) * | 2017-08-08 | 2018-02-13 | 合肥瑞登机械设备有限公司 | There is bits sawing sheet pipe end double integrally forming machine |
| CN207982192U (en) * | 2018-03-31 | 2018-10-19 | 佛山市顺德区鑫雷节能设备有限公司 | Pipe threading machine |
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| Publication number | Publication date |
|---|---|
| CN108436002A (en) | 2018-08-24 |
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