CN218488523U - Automatic pipe cutting machine - Google Patents

Abstract

The utility model discloses an automatic pipe cutting machine, including frame, cutting assembly, drive assembly, tailstock thimble assembly, the subassembly of unloading, roll change subassembly, roll change locating pin subassembly and material loading subassembly, install the roll change subassembly in the frame, the below of roll change subassembly is provided with the material loading subassembly, the left side of roll change subassembly is provided with the subassembly of unloading, the top of roll change subassembly is provided with cutting assembly, and one side of cutting assembly is provided with drive assembly, install roll change locating pin subassembly in the frame, the roll change locating pin subassembly is provided with two, two the roll change locating pin subassembly is located the both sides of roll change subassembly, tailstock thimble assembly is located the rear end of roll change subassembly; the utility model discloses a paper tube cutting process's automated production, the reliability of production efficiency and production can both be guaranteed.

Description

Automatic pipe cutting machine

Technical Field

The utility model relates to a paper tube manufacturing technical field, concretely relates to automatic pipe cutting machine.

Background

The paper tube is a tubular object processed from paper. Most paper tubes are spiral paper tubes and seamless paper tubes, paper tube mainly used chemical fiber industry and film industry, in the course of working of paper tube, cut and be an important process, the work of cutting is generally manually cut through artifical or semi-artificial mode to the paper tube among the prior art, this kind of artifical or semi-artificial mode efficiency is lower, the cost of labor is higher, the paper tube can't get sufficient support at the cutting off in-process, easily take place the deformation, the quality can't be guaranteed, and there is the potential safety hazard. In view of the above drawbacks, it is desirable to design an automatic pipe cutting machine.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatic pipe cutting machine to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an automatic pipe cutting machine, includes frame, cutting assembly, drive assembly, tailstock thimble assembly, the subassembly of unloading, change a roll subassembly, change a roll locating pin subassembly and material loading subassembly, install the change a roll subassembly in the frame, the below of change a roll subassembly is provided with the material loading subassembly, the left side of change a roll subassembly is provided with the subassembly of unloading, the top of change a roll subassembly is provided with cutting assembly, and one side of cutting assembly is provided with drive assembly, install the change a roll locating pin subassembly in the frame, the change a roll locating pin subassembly is provided with two, two change a roll locating pin subassembly is located the both sides of change a roll subassembly, tailstock thimble assembly is located the rear end of change a roll subassembly.

Preferably, the cutting assembly comprises a circular knife shaft, a cutting circular knife is installed on the circular knife shaft, the two ends of the circular knife shaft are rotatably installed on a circular knife bearing seat through a circular knife bearing, the circular knife bearing seat is installed on the supporting shaft, the circular knife shaft is located below the supporting shaft, the two ends of the supporting shaft are installed on the frame through supporting bearings, the two ends of the supporting shaft are fixedly connected with one end of a first connecting plate, the other end of the first connecting plate is provided with the first connecting shaft, the first connecting shaft is provided with a first joint bearing, the first joint bearing is fixedly connected with a piston rod of the first air cylinder, a cylinder body of the first air cylinder is installed on a first hinged seat, and the first hinged seat is hinged with a first pin shaft.

Preferably, a first transmission gear is installed at one end of the circular cutter shaft, the first transmission gear is meshed with a second transmission gear, a first bearing is installed in the middle of the second transmission gear, the first bearing is sleeved on the supporting shaft, one side of the second transmission gear is fixedly connected with one end of a connecting shaft, the connecting shaft is of a hollow structure, the other end of the connecting shaft is fixedly connected with one side of a first driven belt wheel, a second bearing is installed in the middle of the first driven belt wheel, the second bearing is sleeved on the supporting shaft, the first driven belt wheel is in transmission connection with a first driving belt wheel through a first belt, and the first driving belt wheel is installed at the output end of the cutting motor.

Preferably, the transmission assembly includes third drive gear and driving gear, third drive gear's mid-mounting has the third bearing, and the third bearing suit is on first drive shaft, and the one end at the rocking arm is installed to first drive shaft, and the mid-mounting of rocking arm has the second connecting axle, installs second joint bearing on the second connecting axle, second joint bearing and the piston rod fixed connection of second cylinder, the cylinder body of second cylinder is installed on the articulated seat of second, and the articulated seat of second is articulated with second round pin axle, and second round pin axle is installed in the frame, first pivot is installed to the other end of rocking arm.

Preferably, the driving gear is installed at one end of the second transmission shaft, the middle part of the second transmission shaft is installed on the frame through a fourth bearing, a second driven belt wheel is installed at the other end of the second transmission shaft, the second driven belt wheel is in transmission connection with the second driving belt wheel through a second belt, and the second driving belt wheel is installed at the output end of the driving motor.

Preferably, the tailstock ejector pin assembly comprises a tailstock ejector pin, the tailstock ejector pin is fixedly connected with a piston rod of a third cylinder, and the third cylinder is installed on the first cylinder supporting plate.

Preferably, the discharging assembly comprises a push ring, the push ring is installed on the discharging plate, a first slider is installed at the bottom of the discharging plate, the first slider is arranged on a first slide rail in a sliding mode, the first slide rail is installed on a movable plate, a third connecting shaft is installed on the first slider, a third joint bearing is installed on the third connecting shaft, the third joint bearing is fixedly connected with a piston rod of a fourth cylinder, the fourth cylinder is installed on a cylinder support, the cylinder support is installed on the movable plate, second sliders are installed at two ends of the bottom of the movable plate, the second sliders are arranged on a second slide rail in a sliding mode, a screw nut is installed at the bottom of the movable plate, the screw nut is sleeved on the screw rod, two ends of the screw rod are rotatably installed on a screw rod seat, a third driven belt wheel is installed at one end of the screw rod, the third driven belt wheel is in transmission connection with a third driving belt wheel through a third belt, and the third driving belt wheel is installed at the output end of the discharging motor.

Preferably, the reel changing assembly comprises a reel changing disc, four first bearing seats uniformly distributed on the periphery of the disc are arranged on the reel changing disc, a fifth bearing is arranged inside the first bearing seats, a third transmission shaft is arranged inside the fifth bearing, a driven gear is arranged at one end of the third transmission shaft, an inner expansion chuck is arranged at the other end of the third transmission shaft, four arc-shaped notches uniformly distributed on the periphery of the reel changing disc are arranged on the reel changing disc, the center of the reel changing disc is fixedly connected with one end of a second rotating shaft, the middle of the second rotating shaft is arranged on a sixth bearing, the sixth bearing is arranged on the second bearing seats, and the other end of the second rotating shaft is fixedly connected with the output end of a disc motor.

Preferably, the locating pin subassembly includes the locating pin, the piston rod fixed connection of locating pin and fifth cylinder, and the fifth cylinder is installed in the second cylinder backup pad.

Preferably, the feeding assembly comprises a fourth belt and a push block, a second connecting plate is mounted on the fourth belt, the push block is mounted on the second connecting plate, the second connecting plate is mounted on a fixed seat, the fixed seat is mounted on a third slider, the third slider is slidably arranged on a third slide rail, the third slide rail is mounted on a pushing support, the fourth belt is wound on a fourth driving pulley and a fourth driven pulley, the fourth driving pulley is mounted at the output end of a speed reducer, the input end of the speed reducer is fixedly connected with the output shaft of a pushing motor, the fourth driven pulley is mounted on a driven pulley shaft, the driven pulley shaft is mounted on the pushing support through a third bearing seat, a left supporting rod and a right supporting rod are mounted on two sides of the pushing support respectively, the left supporting rod and the right supporting rod are provided with a plurality of parts, a left supporting plate is mounted at the top of each left supporting rod in an inclined mode, and a right supporting plate is mounted at the top of each right supporting rod in an inclined mode.

Compared with the prior art, the utility model relates to an automatic pipe cutting machine, through the material loading subassembly with the paper tube carry the reel change subassembly on, the reel change subassembly presss from both sides tightly one end of paper tube to with the paper tube rotary transport to the below of cutting assembly, support the other end of paper tube through tailstock thimble assembly and support, carry out the rotary cutting operation to the paper tube through cutting assembly cooperation transmission assembly after finishing, realized the automated production of paper tube cutting process, production efficiency and production reliability can both be guaranteed, and eliminated the circular knife and caused the potential safety hazard of injury to operating personnel's hand; the utility model discloses an in the inner chamber that interior bloated chuck inserted the paper tube, can drive the paper tube on the one hand and rotate and carry out cutting operation, on the other hand can play the supporting role to the paper tube, avoids the paper tube to cut off the in-process and takes place to warp, through setting up the subassembly of unloading, is convenient for unload the paper tube simultaneously, can improve the discharge rate of paper tube.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and do not constitute a limitation on the invention, and in the drawings:

fig. 1 is a side view of an automatic pipe cutter of the present invention;

fig. 2 is a schematic view of the internal structure of an automatic pipe cutting machine according to the present invention;

FIG. 3 is a schematic view of the structure at A in FIG. 1;

FIG. 4 is a schematic diagram of the structure at B in FIG. 2;

FIG. 5 is a schematic view of the structure at C in FIG. 2;

FIG. 6 is a schematic view of the structure at D in FIG. 2;

fig. 7 is the utility model relates to a material loading subassembly schematic structure among automatic pipe cutting machine.

In the drawings:

1. a frame; 2. a cutting assembly; 3. a transmission assembly; 4. a tailstock thimble assembly; 5. a discharge assembly; 6. A roll change assembly; 7. a roll change dowel assembly; 8. a feeding assembly; 9. a circular cutter shaft; 10. cutting a circular knife; 11. a circular knife bearing; 12. a circular knife bearing seat; 13. a support shaft; 14. a support bearing; 15. a first connecting plate; 16. a first connecting shaft; 17. a first joint bearing; 18. a first cylinder; 19. a first hinge mount; 20. a first pin shaft; 21. a first drive gear; 22. a second transmission gear; 23. a first bearing; 24. a connecting shaft; 25. a first driven pulley; 26. a second bearing; 27. a third transmission gear; 28. A third bearing; 29. a first drive shaft; 30. a rocker arm; 31. a second connecting shaft; 32. a second spherical plain bearing; 33. a second cylinder; 34. a second hinge mount; 35. a second pin shaft; 36. a first rotating shaft; 37. A shaft seat; 38. a driving gear; 39. a second drive shaft; 40. a fourth bearing; 41. a second driven pulley; 42. a second belt; 43. a second driving pulley; 44. a tailstock thimble; 45. a third cylinder; 46. A first cylinder support plate; 47. a push ring; 48. a stripper plate; 49. a first slider; 50. a first slide rail; 51. moving the plate; 52. a third connecting shaft; 53. a third oscillating bearing; 54. a fourth cylinder; 55. a cylinder support; 56. a second slider; 57. a second slide rail; 58. a transverse plate; 59. a feed screw nut; 60. a screw rod; 61. a screw base; 62. a third driven pulley; 63. a third belt; 64. a third driving pulley; 65. A discharging motor; 66. a motor fixing plate; 67. changing the coil disc; 68. a first bearing housing; 69. a fifth bearing; 70. a third drive shaft; 71. a driven gear; 72. an internal expansion chuck; 73. a second rotating shaft; 74. A sixth bearing; 75. a second bearing housing; 76. positioning pins; 77. a fifth cylinder; 78. a second cylinder support plate; 79. a fourth belt; 80. a push block; 81. a second connecting plate; 82. a fixed seat; 83. a third slider; 84. a third slide rail; 85. a material pushing bracket; 86. a fourth driving pulley; 87. a fourth driven pulley; 88. a speed reducer; 89. a material pushing motor; 90. a driven pulley shaft; 91. a third bearing seat; 92. A left support bar; 93. a left support plate; 94. a left reinforcing plate; 95. a right support bar; 96. a right fascia; 97. And a right reinforcing plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: the utility model provides an automatic pipe cutting machine, includes frame 1, cutting assembly 2, drive assembly 3, tailstock thimble assembly 4, the subassembly of unloading 5, reel change subassembly 6, reel change locating pin subassembly 7 and material loading subassembly 8, install reel change subassembly 6 in the frame 1, the below of reel change subassembly 6 is provided with material loading subassembly 8, the left side of reel change subassembly 6 is provided with the subassembly of unloading 5, the top of reel change subassembly 6 is provided with cutting assembly 2, and one side of cutting assembly 2 is provided with drive assembly 3, install reel change locating pin subassembly 7 in the frame 1, reel change locating pin subassembly 7 is provided with two, two reel change locating pin subassembly 7 is located the both sides of reel change subassembly 6, tailstock thimble assembly 4 is located the rear end of reel change subassembly 6.

The cutting assembly 2 in this embodiment includes a circular knife shaft 9, a cutting circular knife 10 is installed on the circular knife shaft 9, two ends of the circular knife shaft 9 are rotatably installed on a circular knife bearing seat 12 through a circular knife bearing 11, the circular knife bearing seat 12 is installed on a supporting shaft 13, the circular knife shaft 9 is located below the supporting shaft 13, two ends of the supporting shaft 13 are installed on the rack 1 through a supporting bearing 14, two ends of the supporting shaft 13 are fixedly connected with one end of a first connecting plate 15, the other end of the first connecting plate 15 is installed with a first connecting shaft 16, the first connecting shaft 16 is installed with a first knuckle bearing 17, the first knuckle bearing 17 is fixedly connected with a piston rod of a first air cylinder 18, a cylinder body of the first air cylinder 18 is installed on a first hinge seat 19, the first hinge seat 19 is hinged with a first pin shaft 20, and the first pin shaft 20 is installed on the rack 1.

In this embodiment, a first transmission gear 21 is installed at one end of the circular knife shaft 9, the first transmission gear 21 is engaged with a second transmission gear 22, a first bearing 23 is installed in the middle of the second transmission gear 22, the first bearing 23 is sleeved on the supporting shaft 13, one side of the second transmission gear 22 is fixedly connected with one end of a connecting shaft 24, the connecting shaft 24 is of a hollow structure, the other end of the connecting shaft 24 is fixedly connected with one side of a first driven pulley 25, a second bearing 26 is installed in the middle of the first driven pulley 25, the second bearing 26 is sleeved on the supporting shaft 13, the first driven pulley 25 is in transmission connection with a first driving pulley through a first belt, and the first driving pulley is installed at the output end of the cutting motor.

The transmission assembly 3 in this embodiment includes a third transmission gear 27 and a driving gear 38, a third bearing 28 is installed in the middle of the third transmission gear 27, the third bearing 28 is sleeved on the first transmission shaft 29, the first transmission shaft 29 is installed at one end of a rocker arm 30, a second connecting shaft 31 is installed in the middle of the rocker arm 30, a second joint bearing 32 is installed on the second connecting shaft 31, the second joint bearing 32 is fixedly connected to a piston rod of a second cylinder 33, a cylinder body of the second cylinder 33 is installed on a second hinge seat 34, the second hinge seat 34 is hinged to a second pin shaft 35, the second pin shaft 35 is installed on the rack 1, a first rotating shaft 36 is installed at the other end of the rocker arm 30, and the first rotating shaft 36 is installed on the rack 1 through the shaft seat 37.

The driving gear 38 in this embodiment is installed at one end of a second transmission shaft 39, the middle portion of the second transmission shaft 39 is installed on the machine frame 1 through a fourth bearing 40, a second driven pulley 41 is installed at the other end of the second transmission shaft 39, the second driven pulley 41 is in transmission connection with a second driving pulley 43 through a second belt 42, and the second driving pulley 43 is installed at the output end of the driving motor.

The tailstock ejector pin assembly 4 in this embodiment includes a tailstock ejector pin 44, the tailstock ejector pin 44 is fixedly connected to a piston rod of a third cylinder 45, the third cylinder 45 is mounted on a first cylinder support plate 46, and the first cylinder support plate 46 is mounted on the frame 1.

In this embodiment, the discharging assembly 5 includes a push ring 47, the push ring 47 is installed on a discharging plate 48, an arc-shaped groove clamped with a paper tube is formed in one side of the push ring, a first slider 49 is installed at the bottom of the discharging plate 48, the first slider 49 is slidably disposed on a first slide rail 50, the first slide rail 50 is installed on a moving plate 51, a third connecting shaft 52 is installed on the first slider 49, a third joint bearing 53 is installed on the third connecting shaft 52, the third joint bearing 53 is fixedly connected with a piston rod of a fourth cylinder 54, the fourth cylinder 54 is installed on a cylinder bracket 55, the cylinder bracket 55 is installed on the moving plate 51, second sliders 56 are installed at two ends of the bottom of the moving plate 51, the second sliders 56 are slidably disposed on a second slide rail 57, the second slide rail 57 is installed on a transverse plate 58, a screw nut 59 is installed at the bottom of the moving plate 51, the screw nut 59 is sleeved on a screw 60, two ends of the screw 60 are rotatably installed on a screw seat 61, a third pulley 62 is installed at one end of a driven pulley 62, the third pulley 62 is connected with a third belt 63 through a third belt 63, a driving pulley 64 is installed at two sides of a driving motor 65, an output end of a discharging motor 64 is installed at an output end of a fixing plate 64, and a motor 66 is installed at two sides of a discharging motor 65, and a fixing plate 64, and a motor 66 is installed at two sides of a discharging motor 65.

The reel changing assembly 6 in this embodiment includes a reel changing disk 67, four first bearing seats 68 uniformly distributed around the disk are arranged on the reel changing disk 67, a fifth bearing 69 is arranged inside the first bearing seat 68, a third transmission shaft 70 is arranged inside the fifth bearing 69, a driven gear 71 is arranged at one end of the third transmission shaft 70, an internal expansion chuck 72 is arranged at the other end of the third transmission shaft 70, four arc-shaped notches uniformly distributed around the reel changing disk 67 are arranged on the reel changing disk 67, the central position of the reel changing disk 67 is fixedly connected with one end of a second rotating shaft 73, the middle of the second rotating shaft 73 is arranged on a sixth bearing 74, the sixth bearing 74 is arranged on a second bearing seat 75, the second bearing seat 75 is arranged on the frame 1, and the other end of the second rotating shaft 73 is fixedly connected with the output end of the disk motor.

The positioning pin assembly 7 in this embodiment includes a positioning pin 76, the positioning pin 76 is fixedly connected to a piston rod of a fifth cylinder 77, the fifth cylinder 77 is mounted on a second cylinder support plate 78, and the second cylinder support plate 78 is mounted on the frame 1.

The feeding assembly 8 in this embodiment includes a fourth belt 79 and a pushing block 80, the fourth belt 79 is provided with a second connecting plate 81, the second connecting plate 81 is provided with the pushing block 80, the second connecting plate 81 is installed on a fixing seat 82, the fixing seat 82 is installed on a third slider 83, the third slider 83 is slidably disposed on a third slide rail 84, the third slide rail 84 is installed on a pushing support 85, the fourth belt 79 is wound on a fourth driving pulley 86 and a fourth driven pulley 87, the fourth driving pulley 86 is installed at an output end of a speed reducer 88, an input end of the speed reducer 88 is fixedly connected with an output shaft of a pushing motor 89, the fourth driven pulley 87 is installed on a driven pulley shaft 90, the driven pulley shaft 90 is installed on the pushing support 85 through a third bearing seat 91, a left supporting rod 92 and a right supporting rod 95 are respectively installed on two sides of the pushing support 85, the left supporting rod 92 and the right supporting rod 95 are both provided with a plurality of supporting rods, the top of each left supporting rod 92 is obliquely provided with a left supporting plate 93, a left reinforcing plate 94 is fixedly connected between the left supporting rod 93 and the right supporting rod 95, and a right supporting plate 96 are symmetrically connected with a right supporting plate 97, and a reinforcing plate 96, and a left supporting plate 97 are symmetrically connected between the top of each supporting rod 96.

The utility model discloses during the use, its piston rod of fifth cylinder 77 action stretches out and promotes locating pin 76 to remove, push into the arc notch 73 of reel change disc 67 locating reel change disc 67, place the paper tube between left layer board 93 and right layer board 96, push away material motor 89 work, drive fourth driving pulley 86 through the transmission of speed reducer 88 and rotate, fourth driving pulley 86 drives fourth belt 79 and removes, thereby drive ejector pad 80 and remove, ejector pad 80 promotes the paper tube and removes, push into the one end of paper tube on the interior bloated chuck 72, interior bloated chuck 72 presss from both sides tight one end of paper tube, its piston rod withdrawal of fifth cylinder 77 action drives locating pin 76 to remove, make locating pin 76 break away from with reel change disc 67, disc motor work drives second pivot 73 counter-clockwise rotation 90, reel change disc 67 is also along with rotatory 90, after the reel changing disc 67 rotates 90 degrees anticlockwise, the disc motor stops working, another paper tube is placed between the left supporting plate 93 and the right supporting plate 96, the pushing motor 89 works to drive the pushing block 80 to move, the paper tube is pushed to the inner expansion chuck 72, the inner expansion chuck 72 clamps the paper tube, the disc motor works to drive the reel changing disc 67 to rotate 90 degrees anticlockwise and then stops working, after the rotation is completed, the fifth cylinder 77 acts to extend the piston rod of the fifth cylinder again to drive the positioning pin 76 to move, so that the positioning pin 75 is clamped and positioned with the reel changing disc 67, the third cylinder 45 acts to extend the piston rod of the third cylinder to drive the tailstock thimble 44 to move, the tailstock thimble 44 extends into the other end of the paper tube to support the other end of the paper tube, the first cylinder 18 acts to drive the first connecting plate 15 to move, the first connecting plate 15 drives the supporting shaft 13 to rotate, the supporting shaft 13 drives the circular knife bearing block 12, the circular knife shaft 9 and the cutting circular knife 10 to rotate, the cutting circular knife 10 rotates to the paper tube and contacts with the paper tube, the cutting motor works to drive the first driving belt wheel to rotate, the first driven belt wheel 25 is driven to rotate through first belt transmission, the connecting shaft 24 and the second transmission gear 22 also rotate along with the rotation, the second transmission gear 22 and the first transmission gear 21 are in meshing transmission, the circular knife shaft 9 and the cutting circular knife 10 are driven to rotate, the cutting circular knife 10 rotates to cut the paper tube, meanwhile, the second air cylinder 33 acts to drive the rocker arm 30 to move, the third transmission gear 27 also moves along with the movement, the third transmission gear 27 is driven to move between the driving gear 38 and the driven gear 71 and is respectively meshed with the driving gear 38 and the driven gear 71, the driving motor works to drive the second driving belt wheel 43 to rotate, the second driven belt wheel 41 is driven to rotate through the second belt 42, the second transmission shaft 39 and the driving gear 38 also rotate along with the rotation, the third transmission gear 27 and the driven gear 71 are driven to rotate, the paper tube also rotates along with the rotation, the paper tube is convenient for the cutting circular knife 10 to comprehensively cut the paper tube; after the paper tube is cut, the third cylinder 45 moves a piston rod of the third cylinder to drive the tailstock thimble 44 to retract, one end of the paper tube is loosened, the disc motor works to drive the reel changing disc 67 to rotate 90 degrees anticlockwise and then stop working, after the rotation is completed, the fourth motor 54 moves to push the discharging plate 48 to move, the push ring 47 is also contacted with the paper tube along with the movement and is clamped on the paper tube, the paper tube is loosened by the inner expansion chuck 72, the discharging motor 65 works to drive the third driving belt wheel 64 to rotate, the third driven belt wheel 62 and the lead screw 60 are driven to rotate through the transmission of the third belt 63, the lead screw 60 drives the lead screw nut 59 to move, the moving plate 51, the discharging plate 48, the push ring 47 and the paper tube move, so that the paper tube is separated from the inner chuck 72, the fourth cylinder 54 moves to drive the discharging plate 48 to move and reset, the paper tube is manually taken out, and as mentioned above, one complete cutting action is completed, and the paper tube cutting is circulated and automatic without stopping.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. An automatic pipe cutting machine which characterized in that: including frame (1), cutting assembly (2), drive assembly (3), tailstock thimble assembly (4), unload subassembly (5), change a roll subassembly (6), change a roll locating pin subassembly (7) and material loading subassembly (8), install change a roll subassembly (6) on frame (1), the below of change a roll subassembly (6) is provided with material loading subassembly (8), the left side of changing a roll subassembly (6) is provided with unloading subassembly (5), the top of changing a roll subassembly (6) is provided with cutting assembly (2), and one side of cutting assembly (2) is provided with drive assembly (3), install change a roll locating pin subassembly (7) on frame (1), change a roll locating pin subassembly (7) is provided with two, two change a roll locating pin subassembly (7) and be located the both sides of changing a roll subassembly (6), tailstock subassembly (4) is located the rear end of changing a roll subassembly (6).

2. The automatic pipe cutter as claimed in claim 1, wherein: cutting subassembly (2) include circle arbor (9), install cutting circular knife (10) on circle arbor (9), the both ends of circle arbor (9) are passed through circular knife bearing (11) and are rotated and install on circle knife bearing frame (12), and circle knife bearing frame (12) are installed on back shaft (13), circle arbor (9) are located the below of back shaft (13), the both ends of back shaft (13) all with the one end fixed connection of first connecting plate (15), first connecting shaft (16) are installed to the other end of first connecting plate (15), install first joint bearing (17) on first connecting shaft (16), piston rod fixed connection of first joint bearing (17) and first cylinder (18), the cylinder body of first cylinder (18) is installed on first articulated seat (19), and first articulated seat (19) are articulated with first round pin axle (20).

3. The automatic pipe cutter of claim 2, wherein: first drive gear (21) is installed to a tip of circle arbor (9), first drive gear (21) and second drive gear (22) meshing, the mid-mounting of second drive gear (22) has first bearing (23), first bearing (23) suit is on back shaft (13), one side of second drive gear (22) and the one end fixed connection who links axle (24), the other end of linking axle (24) and one side fixed connection of first driven pulleys (25), the mid-mounting of first driven pulleys (25) has second bearing (26), second bearing (26) suit is on back shaft (13), first driven pulleys (25) are connected with first driving pulley transmission through first belt, the output at the cutting motor is installed to first driving pulley.

4. The automatic pipe cutter of claim 1, wherein: drive assembly (3) include third drive gear (27) and driving gear (38), the mid-mounting of third drive gear (27) has third bearing (28), and third bearing (28) suit is on first drive shaft (29), and the one end at rocking arm (30) is installed in first drive shaft (29), and the mid-mounting of rocking arm (30) has second connecting axle (31), installs second joint bearing (32) on second connecting axle (31), and second joint bearing (32) and the piston rod fixed connection of second cylinder (33), the cylinder body of second cylinder (33) is installed on the articulated seat of second (34), and the articulated seat of second (34) is articulated with second round pin axle (35), first pivot (36) are installed to the other end of rocking arm (30).

5. The automatic pipe cutter as claimed in claim 4, wherein: the driving gear (38) is installed at one end of a second transmission shaft (39), a second driven belt wheel (41) is installed at the other end of the second transmission shaft (39), the second driven belt wheel (41) is in transmission connection with a second driving belt wheel (43) through a second belt (42), and the second driving belt wheel (43) is installed at the output end of the driving motor.

6. The automatic pipe cutter of claim 1, wherein: the tailstock ejector pin assembly (4) comprises a tailstock ejector pin (44), the tailstock ejector pin (44) is fixedly connected with a piston rod of a third cylinder (45), and the third cylinder (45) is installed on a first cylinder supporting plate (46).

7. The automatic pipe cutter of claim 1, wherein: the discharging assembly (5) comprises a push ring (47), the push ring (47) is arranged on a discharging plate (48), a first sliding block (49) is installed at the bottom of the discharging plate (48), the first sliding block (49) is arranged on a first sliding rail (50) in a sliding mode, the first sliding rail (50) is installed on a moving plate (51), a third connecting shaft (52) is installed on the first sliding block (49), a third joint bearing (53) is installed on the third connecting shaft (52), the third joint bearing (53) is fixedly connected with a piston rod of a fourth air cylinder (54), the fourth air cylinder (54) is installed on an air cylinder support (55), the air cylinder support (55) is installed on the moving plate (51), second slider (56) are installed at the bottom both ends of movable plate (51), second slider (56) slide to be set up on second slide rail (57), screw-nut (59) are installed to the bottom of movable plate (51), screw-nut (59) suit is on lead screw (60), the both ends of lead screw (60) are rotated and are installed on lead screw seat (61), third driven pulley (62) are installed to a tip of lead screw (60), third driven pulley (62) are connected with third driving pulley (64) transmission through third belt (63), the output at unloading motor (65) is installed in third driving pulley (64).

8. The automatic pipe cutter of claim 1, wherein: roll change subassembly (6) are equipped with four evenly distributed on disc first bearing (68) all around including roll change disc (67) on roll change disc (67), first bearing (68) internally mounted has fifth bearing (69), fifth bearing (69) internally mounted has third transmission shaft (70), and driven gear (71) are installed to the one end of third transmission shaft (70), and interior bloated chuck (72) are installed to the other end of third transmission shaft (70), be equipped with four evenly distributed on roll change disc (67) the arc notch in the outside all around of roll change disc (67), the central point of roll change disc (67) puts the one end fixed connection with second pivot (73), and the mid-mounting of second pivot (73) is on sixth bearing (74), and sixth bearing (74) are installed on second bearing (75), the other end of second pivot (73) and the output fixed connection of disc motor.

9. The automatic pipe cutter as claimed in claim 1, wherein: the positioning pin assembly (7) comprises a positioning pin (76), the positioning pin (76) is fixedly connected with a piston rod of a fifth cylinder (77), and the fifth cylinder (77) is installed on a second cylinder supporting plate (78).

10. The automatic pipe cutter as claimed in claim 1, wherein: the feeding assembly (8) comprises a fourth belt (79) and a push block (80), a second connecting plate (81) is arranged on the fourth belt (79), a push block (80) is arranged on the second connecting plate (81), the second connecting plate (81) is arranged on a fixed seat (82), the fixed seat (82) is arranged on a third sliding block (83), the third sliding block (83) is arranged on a third sliding rail (84) in a sliding manner, the third sliding rail (84) is arranged on a material pushing support (85), the fourth belt (79) is wound around a fourth driving pulley (86) and a fourth driven pulley (87), the fourth driving belt wheel (86) is arranged at the output end of the speed reducer (88), the input end of the speed reducer (88) is fixedly connected with the output shaft of the material pushing motor (89), the fourth driven belt wheel (87) is arranged on a driven belt wheel shaft (90), the driven belt wheel shaft (90) is arranged on the material pushing support (85) through a third bearing seat (91), a left support rod (92) and a right support rod (95) are respectively arranged at the two sides of the pushing support (85), the left supporting rod (92) and the right supporting rod (95) are provided with a plurality of supporting plates, a left supporting plate (93) is obliquely arranged at the top of the left supporting rod (92), and a right supporting plate (96) is obliquely arranged at the top of the right supporting rod (95).

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