CN210231694U - Novel pipe rolling device - Google Patents

Novel pipe rolling device Download PDF

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Publication number
CN210231694U
CN210231694U CN201920994657.2U CN201920994657U CN210231694U CN 210231694 U CN210231694 U CN 210231694U CN 201920994657 U CN201920994657 U CN 201920994657U CN 210231694 U CN210231694 U CN 210231694U
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roller
base
feeding
pressing
motor
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CN201920994657.2U
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Yutong Ju
鞠玉通
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鞠玉通
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Abstract

The utility model relates to a novel pipe rolling device, which comprises a material pressing device and a material cutting device, wherein the material pressing device comprises a material pressing roller, a pressurizing device, a roller base, a transmission mechanism and a motor I, the number of the roller and the roller base is 2, the roller is rotationally connected on the roller base, the two rollers keep horizontal parallel, the roller is in transmission connection with the motor through the transmission mechanism, the material pressing roller is rotationally connected on the pressurizing device and is positioned vertically above the middle position of the two rollers, the material pressing roller is arranged in parallel with the axis of the roller, the material cutting device comprises a cutter and a pushing device, the cutter is rotationally connected on the pushing device, the cutting direction of the cutter is the same as that of the pushing device, the pushing direction of the pushing device is vertical to the axis direction of the roller, and the cutter can more stably cut a pipe fitting through the mutual matching of the material pressing device and the material cutting, the safety performance is improved, and meanwhile, the service life of the cutter is prolonged.

Description

Novel pipe rolling device
Technical Field
The utility model relates to a roll a tub device, specifically speaking is a novel roll a tub device.
Background
In the prior stage, the equipment adopted for rolling and breaking the metal pipe in China is basically that a horizontal headstock drives the metal pipe to rotate through a pneumatic chuck, a metal pipe fitting is manually rolled and broken through a simple rolling cutter platform which transversely moves, and the rolling cutter platform is manually pushed forward once every time the metal pipe fitting is rolled and broken. The method has the defects of high labor intensity, high danger coefficient, low tube rolling speed, large product size deviation and non-standard quality. Therefore, the contradiction between the current production and the market demand is prominent, and the development of the production industry using the roll-off metal pipe fitting as the raw material is seriously influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model discloses a novel pipe rolling device which comprises a material pressing device and a material cutting device, the pressing device and the cutting device are arranged adjacently, the pressing device comprises a pressing roller, a pressurizing device, a roller base, a transmission mechanism and a first motor, the number of the rollers and the roller bases is 2, the rollers are rotationally connected to the roller bases, the two rollers are kept horizontally parallel, the rollers are in transmission connection with the motor through a transmission mechanism, the material pressing roller is rotationally connected to the pressurizing device and is positioned vertically above the middle position of the two rollers, the material pressing roller is parallel to the axis of the roller, the material cutting device comprises a cutter and a pushing device, the cutter is rotationally connected to the pushing device, and the cutting direction of the cutter is the same as the advancing direction of the pushing device, and the advancing direction of the pushing device is vertical to the axial direction of the roller.
Further, it still includes base and support frame, the base is inside hollow cuboid structure, just the support frame is fixed on the lateral wall of base, and the top surface border of base is provided with the slide rail, and fixedly on the slide rail be provided with the roller base, nip roll and blank device set up on the support frame, and the two adjacent setting, and the direction of exerting pressure of nip roll is the same with blank device's cutting direction.
The feeding device is arranged adjacent to the pressing device and comprises a first air cylinder, a feeding support, a material supporting roller, a feeding roller, a second motor, a connecting plate, a motor base and a second air cylinder, the bottom end of the connecting plate is fixed on the base, one end of the motor base is rotatably connected onto the connecting plate, the second motor is fixed on the motor base, the other end of the motor base is fixedly connected with the power output end of the second air cylinder, the feeding roller is fixedly connected onto the power output end of the second motor, the material supporting roller is fixed on the power output end of the first air cylinder and is positioned vertically below the feeding roller, the material supporting roller is driven by the first air cylinder to move in the vertical direction, a space is reserved between the material supporting roller and the feeding roller, the material supporting roller adjusts the space between the material supporting roller and the feeding roller through the movement in the vertical direction, the feeding support is of a circular ring structure and is fixed at one end of the top surface of the base, the circular ring inner area of the feeding support corresponds to the space area between the material supporting roller and the feeding roller in the horizontal direction.
Further, it still includes positioner, positioner includes limit structure, mounting bracket, adjusting bolt pole, sliding groove spare and location cylinder, the quantity of sliding groove spare is 2, be provided with the pulley on the sliding groove spare, sliding groove spare passes through pulley sliding connection on the slide rail, the mounting bracket vertical fixation is on two sliding groove spare, and the mounting bracket top surface is provided with the bolt hole, adjusting bolt pole passes through the bolt hole with location cylinder swing joint on the mounting bracket, limit structure fixes at location cylinder's flexible serving, and limit structure passes through location cylinder horizontal migration.
Furthermore, the device also comprises a control panel, wherein the control panel is arranged on the support frame, and an upper limit switch, a working feed switch and a lower limit switch are arranged on the control panel.
Further, it still includes the waste material filter screen, the waste material filter screen sets up on the base and is located the vertical below of blank device.
Further, the pushing device is a hydraulic oil cylinder.
Further, the roller is an encapsulated roller.
Furthermore, a photoelectric switch is arranged on the feeding device.
Furthermore, the feeding support is of a circular ring structure, and the diameter of the inner circle of the circular ring is larger than or equal to 17mm and smaller than or equal to 200 mm.
Advantageous effects
Through using the utility model discloses in a novel roll tub device can obtain following advantage effect:
1. the device is provided with the feeding device, and can cut the pipe fittings faster and more continuously
2. This device is equipped with positioner, can ensure that the length of the pipe fitting after the cutting is more accurate.
3. This device is equipped with press device and blank device, and through mutually supporting of press device and blank device, the cutter can be more steady cuts the pipe fitting, has also prolonged the life of cutter when having promoted the security performance.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the present invention;
fig. 3 is a schematic structural view of the positioning device of the present invention;
FIG. 4 is a schematic structural view of the connection between the roller and the motor of the present invention;
fig. 5 is a schematic structural diagram of the feeding device of the present invention.
Legend: a feeding device; 10. a first cylinder; 11. a feeding support; 12. a material supporting roller; 13. a feed roller; 14. a second motor; 15. a photoelectric switch; 16. a feed holder adjusting screw; 17. a connecting plate; 18. a motor base; 19. a second air cylinder; 2. a pressing device, 21 a pressing roller, 22 a roller, 23 a belt; 24. pre-tightening the chain wheel; 25. a feed holder adjusting screw; 26. a material pressing roller seat; 27. a roller base; 28. a first motor; 3. the automatic cutting machine comprises a cutting device, a cutter holder, a pushing device, a positioning device, a limiting structure, a sliding groove piece, a positioning cylinder, a mounting frame, an adjusting bolt rod, a pulley, a set bolt, a waste filtering net, a base, a sliding rail, a supporting frame, a control panel, an upper limiting switch, a working switch and a lower limiting switch, wherein the cutting device comprises 31 parts of a cutter, 32 parts of a cutter holder, 33 parts of a pushing device, 4 parts of a positioning device, 41 parts of a limiting structure, 42 parts of a sliding groove piece, 43 parts of a positioning.
Detailed Description
The present invention is further illustrated by the following examples, but is not limited to the contents of the specification.
Example 1
As shown in fig. 1, fig. 2 and fig. 4, the utility model relates to a novel pipe rolling device, which comprises a pressing device 2 and a cutting device 3, wherein the pressing device 2 and the cutting device 3 are adjacently arranged, the pressing device 2 comprises a pressing roller 21, a pressurizing device 25, a roller 22, a roller base 27, a transmission mechanism 23 and a motor I28, the number of the roller 22 and the roller base 27 is 2, bearings are respectively arranged at the front end and the rear end of the roller 22, the roller 22 is fixed on the roller base 27 at the positions of the bearings, the two rollers 22 are arranged in parallel, a certain distance is left between the rollers 22 to ensure that a pipe fitting can be placed between the two rollers 22 without falling from the gap, the roller 22 is vertically arranged with the roller base 27, the roller 22 is rotatably connected on the roller base 27 and the two rollers 22 are kept horizontally parallel, the roller 22 is in transmission connection with the motor I28 through the transmission mechanism 23, the first motor 28 is electrically connected with a power supply, a belt pulley is arranged at the top ends of the two rollers 22, the two rollers 22 are in transmission connection with the first motor 28 and the pre-tightening chain wheel 24 through a belt 23, the first motor 28 can drive the two rollers 22 to rotate, the nip roll 21 is rotatably connected to the pressurizing device 25 and is positioned vertically above the middle position of the two rollers 22, the axis of the nip roll 21 is parallel to the axis of the rollers 22, the cutting device 3 comprises a cutter 31 and a pushing device 33, the cutter 31 is rotatably connected to the pushing device 33, the cutting direction of the cutter 31 is the same as the pushing direction of the pushing device 33, the pushing direction of the pushing device 33 is vertical to the axis direction of the rollers 22, the nip roll 21 is rotatably connected to the nip roll seat 26, the nip roll 21 can vertically move up and down through the pressurizing device 25, and the pipe fitting is guaranteed to be tightened in the area formed by, the cutter 31 is rotationally connected to the cutter holder 32 through a rotating shaft, the cutter holder 32 is fixed on the propelling device 33, the propelling direction of the propelling device 33 is consistent with the moving direction of the nip roll 21, when the device is used, a pipe is placed between the two rollers 22, the nip roll 21 is pressed on the upper surface of the pipe through the pressurizing device 25, the motor 28 is started, the motor 28 starts to rotate, the two rollers 22 start to rotate through the driving of the belt 23, the nip roll 21 continues to be pressurized, the pressure roll 21 also starts to rotate as the nip roll 21 is rotationally connected, the pipe to be cut starts to rotate under the mutual acting force between the nip roll 21 and the two rollers 22, meanwhile, the pushing device 33 pushes the cutter 31 to be in contact with the pipe, the cutter 31 is rotationally connected to the cutter holder 32, and when the cutter 31 is in contact with the pipe, the cutter 31 starts to rotate and starts to cut the pipe through friction, the pushing device 33 continues to push the cutter 31 forward along with the cutting until the pipe fitting is cut, the cutting mode has the advantages that the cutter 31 is driven when the pipe fitting rotates, the cutting mode is different from the mode that the notch can only be opened on the pipe fitting firstly in the prior art, and then the cutting is completed along with the increase of the notch, in the technical scheme, the cutter 31 is driven, when the pipe fitting is cut, compared with the prior art, after the pipe fitting is cut in the scheme, the pipe opening of the pipe fitting is smoother, burrs cut on the pipe opening are less, the pipe fitting precision after the cutting is higher, scrap iron generated in the mode is less, and the abrasion of the cutter 31 is less.
Example 2
As shown in fig. 1 and 2, the device is optimized on the basis of embodiment 1, and further includes a base 6 and a support frame 7, the base 6 is a cuboid structure with a hollow interior, the support frame 7 is fixed on a side wall of the base 6, a slide rail 61 is arranged on a periphery of a top surface of the base 6, a roller base 27 is fixedly arranged on the slide rail 61, the nip roller 21 and the blanking device 3 are arranged on the support frame 7 and are arranged adjacently, and a pressing direction of the nip roller 21 is the same as a cutting direction of the blanking device 3.
As shown in fig. 5, the feeding device 1 is arranged adjacent to the pressing device 2, the feeding device 1 includes a first air supporting cylinder 10, a feeding support 11, a material supporting roller 12, a feeding roller 13, a second motor 14, a connecting plate 17, a motor base 18 and a second air cylinder 19, the lower end of the connecting plate 17 is fixed on the base 6, one end of the motor base 18 is rotatably connected to the connecting plate 17, the second motor 14 is fixed on the motor base 18, the other end of the motor base 18 is fixedly connected with the power output end of the second air cylinder 19, the feeding roller 13 is fixedly connected to the power output end of the second motor 14 and driven by the second motor 14 to rotate, the material supporting roller 12 is fixedly connected to the power output end of the first air cylinder 10 and located vertically below the feeding roller 13, the material supporting roller 12 is driven by the first air cylinder 10 to move in the vertical direction, a space is reserved between the material supporting roller 12 and the feeding roller 13, the material supporting roller 12 is adjusted to be spaced from the feeding roller 13 through movement in the vertical direction, the feeding support 11 is in a circular ring structure and is fixed at one end of the top surface of the base 6, the circular ring area of the feeding support 11 corresponds to the space area between the material supporting roller 12 and the feeding roller 13 in the horizontal direction, the feeding roller 13 is driven by a second air cylinder 19 to move up and down, the height of the feeding support 11 is adjusted through adjusting a screw 16 of the feeding support, so that a pipe fitting is ensured to be horizontally kept when being erected with two rollers 22 after passing through the feeding support 11, the feeding support 11 plays a role in guiding and supporting the pipe fitting, the second air cylinder 19 and the first air cylinder 10 are respectively connected with two air cylinders, when the second motor 14 is started, the feeding roller 13 starts to rotate, the air cylinder connected with the second air cylinder 19 starts to contract to pull the feeding roller 13 downwards, and meanwhile, the air cylinder of the material supporting roller 12 pushes the first air cylinder 10 upwards, the pipe fitting is wrapped and clamped by the feed roller 13 and the material supporting roller 12, and the pipe fitting is pushed forwards by the friction force generated by the feed roller 13 on the pipe fitting, so that the pipe fitting can be cut faster, the pipe fitting is prevented from being pushed forwards manually, the risk factor is reduced, and the labor intensity is reduced.
As shown in fig. 3, it further comprises a positioning device 4, the positioning device 4 comprises a position-limiting structure 41, a mounting frame 44, an adjusting bolt rod 45, sliding groove members 42 and a positioning cylinder 43, the number of the sliding groove members 42 is 2, pulleys 46 are arranged on the sliding groove members 42, the sliding groove members 42 are slidably connected to sliding rails 61 through the pulleys 46, the mounting frame 44 is vertically fixed on the two sliding groove members 42, bolt holes are arranged on the top surface of the mounting frame 44, the adjusting bolt rod 45 movably connects the positioning cylinder 43 to the mounting frame 44 through the bolt holes, the position-limiting structure 41 is fixed on the telescopic end of the positioning cylinder 43, the position-limiting structure 41 is horizontally moved through the positioning cylinder 43, the positioning device 4 is used for controlling the length of the cut pipe, a fastening bolt 47 is arranged on each sliding groove member 42, the positioning device 4 can slide on the sliding rails 61 through loosening the fastening bolt 47, the position of the positioning device 4 on the sliding rails 61 is adjusted according to the, the adjusting bolt 47 is screwed tightly after the adjusting is finished, the position of the adjusting bolt rod 45 can be adjusted to ensure that the limiting structure 41 and the pipe fitting are kept in the same horizontal direction, the positioning cylinder 43 is used for pushing the limiting structure 41 to a set position and propping the pipe fitting when the pipe fitting is sent to the lower part of the cutting device 3 by the feeding device 1, and the positioning cylinder 43 withdraws the limiting structure 41 through contraction when the cutting is finished to ensure that the cut pipe fitting falls smoothly.
It still includes control panel 8, control panel 8 sets up on support frame 7, control panel 8 is last to be set up by last limit switch 81, worker advances switch 82 and lower limit switch 83, go up limit switch 81's effect and lie in when cutter 31 prepares to cut the pipe fitting, can control cutter 31 from the initial position contact with the pipe fitting fast, worker advances switch 82's effect and lies in slowing down the propulsion speed of cutter 31 when cutter 31 contacts with the pipe fitting, guarantee the stationarity of cutting, lower limit switch 83's effect lies in when the cutting of completion pipe fitting, control cutter 31 gets back to the initial position.
It still includes waste material filter screen 5, and waste material filter screen 5 sets up on base 6 and is located blank device 3's vertical below, and the setting of waste material filter screen 5 can be collected the iron fillings that produce in the cutting process, and the pipe fitting of having avoided the cutting to accomplish mixes together with iron fillings and has guaranteed that the pipe fitting of cutting is accomplished is clean and tidy.
Thrust unit 33 is hydraulic cylinder, and thrust unit 33 adopts hydraulic cylinder's advantage lies in having ensured that the pipe fitting is by the propulsive stability of cutting knife in the cutting process, has promoted cutting accuracy.
The roller 22 is an encapsulated roller, and the encapsulated roller is used for increasing the friction force between the roller and the pipe fitting, so that the pipe fitting is driven to rotate, the scratch on the surface of the pipe fitting is reduced, and the integrity of the pipe fitting is ensured.
Still be provided with photoelectric switch 15 on feed arrangement 1, the photoelectric switch model is E3F-DS10C4, and photoelectric switch 15's effect lies in detecting whether still has the pipe fitting to cut, if detect the pipe fitting, this device can continue the operation, if can not detect the pipe fitting, this device can the bring to rest, has avoided the waste of the energy.
The feeding support 11 is of a circular ring structure, and the diameter of the inner circle of the circular ring is greater than or equal to 17mm and smaller than or equal to 200 mm.
The device is controlled by a programmable PLC (programmable logic controller), the type of the PLC is XC2-24R, the execution time of each action cylinder and each hydraulic cylinder is controlled by programming the PLC, and the on-off state of each position signal is monitored. And a frequency conversion speed regulating device is matched in the aspect of a circuit, so that the speed of a spindle motor is changed, and the spindle motor is convenient to adapt to various pipe materials.
When a pipe fitting is manually placed into the feeding device 1, an operator presses a start button, a no-material detection photoelectric switch of the cutting device 3 detects that a material exists, a cylinder of the material supporting roller 12 is pushed upwards, a cylinder of the feeding roller 13 is pushed forwards, the material supporting roller 12 and the feeding roller 13 clamp the pipe fitting and feed the pipe fitting to the position below the cutting device 3 along with the rotation of the feeding roller 13, the length of the cut pipe fitting is determined through the setting of the positioning device 4, the positioning cylinder 43 pushes the limiting structure 41 to a specified position, the advancing pipe fitting is pushed by the limiting structure 41, the feeding device 1 stops feeding, the material supporting roller 12 and the feeding roller 13 are separated from the pipe fitting, the pressing device 2 starts to operate, the pressing roller 21 moves downwards through the pressing device 25 until the pressing roller is contacted with the pipe fitting, the first motor 28 drives the two rollers 22 to rotate through the belt 23, the pressing device 25 continues to apply pressure to the pressing roller 21, and the pipe fitting starts to rotate under the acting force of the pressing roller 21, meanwhile, the pushing device 33 pushes the cutter 31 to be in contact with the pipe fitting, the cutter 31 is rotatably connected to the cutter holder 32, after the cutter 31 is in contact with the pipe fitting, the cutter 31 rotates under the driving of the pipe fitting through friction, the pipe fitting is cut, the pushing device 33 continues to push the cutter 31 forward along with the cutting until the cutting of the pipe fitting is completed, the feeding device 1 continues to feed materials after the cutting is completed, and each device continues to perform previous actions until the whole pipe fitting is cut.
It is to be understood that the above-described embodiments of the present invention are merely examples provided for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Not all embodiments are exhaustive. All obvious changes or variations led out by the technical scheme of the utility model are still in the protection scope of the utility model.

Claims (10)

1. The novel pipe rolling device is characterized by comprising a pressing device (2) and a cutting device (3), wherein the pressing device (2) and the cutting device (3) are arranged adjacently, the pressing device (2) comprises a pressing roller (21), a pressurizing device (25), rollers (22), a roller base (27), a transmission mechanism (23) and a motor I (28), the number of the rollers (22) and the roller base (27) is 2, the rollers (22) are rotatably connected to the roller base (27), the two rollers (22) are kept horizontally parallel, the rollers (22) are in transmission connection with the motor I (28) through the transmission mechanism (23), the pressing roller (21) is rotatably connected to the pressurizing device (25) and is positioned vertically above the middle position of the two rollers (22), the pressing roller (21) and the roller (22) are arranged in parallel to the axis, the cutting device (3) comprises a cutter (31) and a pushing device (33), the cutter (31) is rotatably connected to the pushing device (33), the cutting direction of the cutter (31) is the same as the propelling direction of the pushing device (33), and the propelling direction of the pushing device (33) is perpendicular to the axial direction of the roller (22).
2. The novel pipe rolling device according to claim 1, characterized in that the novel pipe rolling device further comprises a base (6) and a support frame (7), the base (6) is of a cuboid structure with a hollow interior, the support frame (7) is fixed on the side wall of the base (6), a slide rail (61) is arranged on the periphery of the top surface of the base (6), a roller base (27) is fixedly arranged on the slide rail (61), the nip roller (21) and the blanking device (3) are arranged on the support frame (7) and are arranged adjacently, and the pressing direction of the nip roller (21) is the same as the cutting direction of the blanking device (3).
3. The novel pipe rolling device according to claim 2, characterized by further comprising a feeding device (1), wherein the feeding device (1) is arranged adjacent to the pressing device (2), the feeding device (1) comprises a first air cylinder (10), a feeding support (11), a material supporting roller (12), a feeding roller (13), a second motor (14), a connecting plate (17), a motor base (18) and a second air cylinder (19), the bottom end of the connecting plate (17) is fixed on the base (6), one end of the motor base (18) is rotatably connected to the connecting plate (17), the second motor (14) is fixed on the motor base (18), the other end of the motor base (18) is fixedly connected with the power output end of the second air cylinder (19), the feeding roller (13) is fixedly connected to the power output end of the second motor (14), and the material supporting roller (12) is fixedly connected to the power output end of the first air cylinder (10) and located vertically below the feeding roller (13) The material supporting roller (12) moves in the vertical direction through the driving of the cylinder I (10), a distance is reserved between the material supporting roller (12) and the feeding roller (13), the material supporting roller (12) is adjusted through the movement in the vertical direction and the distance between the material supporting roller and the feeding roller (13), the feeding support (11) is of a circular ring structure and is fixed at one end of the top surface of the base (6), and the circular ring inner area of the feeding support (11) corresponds to the distance area between the material supporting roller (12) and the feeding roller (13) in the horizontal direction.
4. A new tube rolling mill according to claim 2 or 3, characterized in that it further comprises positioning means (4), the positioning device (4) comprises a limiting structure (41), a mounting frame (44), an adjusting bolt rod (45), a sliding groove piece (42) and a positioning cylinder (43), the number of the sliding groove parts (42) is 2, the sliding groove parts (42) are provided with pulleys (46), the sliding groove parts (42) are connected on the sliding rail (61) in a sliding way through the pulleys (46), the mounting rack (44) is vertically fixed on the two sliding groove members (42), the top surface of the mounting rack (44) is provided with a bolt hole, the adjusting bolt rod (45) movably connects the positioning cylinder (43) to the mounting frame (44) through a bolt hole, the limiting structure (41) is fixed on the telescopic end of the positioning cylinder (43), and the limiting structure (41) moves horizontally through the positioning cylinder (43).
5. The novel pipe rolling device according to claim 1, characterized by further comprising a control panel (8), wherein the control panel (8) is arranged on the support frame (7), and an upper limit switch (81), a working feed switch (82) and a lower limit switch (83) are arranged on the control panel (8).
6. The new tube rolling device according to claim 1, characterized in that it further comprises a waste filter screen (5), said waste filter screen (5) being arranged on the base (6) and vertically below the blanking device (3).
7. The new tube rolling mill according to claim 1, characterized in that the pushing device (33) is a hydraulic cylinder.
8. The new tube rolling mill according to claim 1, characterized in that the rollers (22) are encapsulated rollers.
9. The new tube rolling mill according to claim 3, characterized in that a photoelectric switch (15) is also provided on the feeding device (1).
10. The new pipe rolling mill according to claim 3, characterized in that the feeding support (11) is of a circular ring structure and the diameter of the inner circle of the circular ring is greater than or equal to 17mm and less than or equal to 200 mm.
CN201920994657.2U 2019-06-28 2019-06-28 Novel pipe rolling device Active CN210231694U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920994657.2U CN210231694U (en) 2019-06-28 2019-06-28 Novel pipe rolling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920994657.2U CN210231694U (en) 2019-06-28 2019-06-28 Novel pipe rolling device

Publications (1)

Publication Number Publication Date
CN210231694U true CN210231694U (en) 2020-04-03

Family

ID=69989038

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920994657.2U Active CN210231694U (en) 2019-06-28 2019-06-28 Novel pipe rolling device

Country Status (1)

Country Link
CN (1) CN210231694U (en)

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