CN107601836B

CN107601836B - Glass tube cutting machine

Info

Publication number: CN107601836B
Application number: CN201710738022.1A
Authority: CN
Inventors: 刘凯明
Original assignee: Beijing Sunny Glass Instrument Co Ltd
Current assignee: Chongqing Xinwei Glass Co.,Ltd.
Priority date: 2017-08-24
Filing date: 2017-08-24
Publication date: 2020-03-17
Anticipated expiration: 2037-08-24
Also published as: CN107601836A

Abstract

The invention relates to a glass tube cutting machine, which comprises a rack, a supporting device horizontally erected on the rack and used for supporting a glass tube, a cutting knife arranged above the supporting device and a heating device for heating the glass tube, and is characterized in that: the cutting knife is installed on the knife rest, but the knife rest is including setting up the stand in frame one side and setting up in stand top and axial displacement's crossbeam, the crossbeam is close to the one end rotation of glass pipe and is connected with the arc cutter arbor of opening towards the glass pipe, the swing plane of arc cutter arbor is perpendicular with the glass pipe axis, the cutting knife sets up in the arc cutter arbor keep away from on the intrados of the one end of crossbeam, the glass pipe is close to one side conflict of stand and is provided with the ejector pin of fixing on the crossbeam. When the glass tube is cut, the glass tube is limited by the ejector rod, so that the glass tube cannot be displaced on the rotating device, the fracture cut by the glass cutting knife is neat, and the product percent of pass is improved.

Description

Glass tube cutting machine

Technical Field

The invention relates to the field of glass tube processing equipment, in particular to a glass tube cutting machine.

Background

Nowadays, the use amount of the glass tube is greatly increased, and higher requirements are also put forward on the processing efficiency of the glass tube. In the process of producing and processing the glass tube, the glass tube blank is generally required to be cut and processed, and a longer glass tube is cut into required length. The existing glass tube cutting machine needs to place a glass tube on a rotating device to rotate when working, then supports a glass cutting knife on the glass tube to cut, but the thicknesses of the cut glass tubes are different, so that the positions of the cutting knife on the glass tubes are different, the glass tubes are easy to derail and roll off from the rotating device or deviate when cutting, the fracture of the cut glass tubes has serious quality problems, and the product percent of pass is low.

Disclosure of Invention

The invention aims to provide a glass tube cutting machine, which limits a glass tube when the glass tube is cut, so that the glass tube cannot be displaced on a rotating device, the cut fracture of a glass cutting knife is neat, and the product percent of pass is improved.

The above object of the present invention is achieved by the following technical solutions:

the utility model provides a glass tube clipper, erects the strutting arrangement who is used for supporting the glass tube in the frame, sets up the cutting knife and the heating device who heats to the glass tube in strutting arrangement top, its characterized in that including frame, level: the cutting knife is installed on the knife rest, but the knife rest is including setting up the stand in frame one side and setting up in stand top and axial displacement's crossbeam, the crossbeam is close to the one end rotation of glass pipe and is connected with the arc cutter arbor of opening towards the glass pipe, the swing plane of arc cutter arbor is perpendicular with the glass pipe axis, the cutting knife sets up in the arc cutter arbor keep away from on the intrados of the one end of crossbeam, the glass pipe is close to one side conflict of stand and is provided with the ejector pin of fixing on the crossbeam.

By adopting the technical scheme, when the glass tube is cut by using the cutting machine, the glass tube is placed on the supporting device, the position of the cross beam can be adjusted according to the diameter of the glass tube, the ejector rod is enabled to be abutted against the outer wall of the glass tube, then the arc-shaped cutter bar is rotated to enable the cutting knife to be abutted against the outer wall of the glass tube, when the glass tube is cut, the glass tube is rotated on the supporting device to press the arc-shaped cutter bar downwards, the cutting knife cuts along the outer surface of the glass tube, due to the blocking of the ejector rod, the glass tube cannot move towards the direction of the upright column, the bayonet of the arc-shaped cutter bar is downward, the cutting knife is arranged at one end of the arc-shaped cutter bar far away from the cross beam, the cutting knife is abutted against one side of the glass tube far away from the upright column to cut, the glass tube cannot move towards the direction far away, meanwhile, the arc-shaped cutter bar is rotatably arranged on the cross beam and can adapt to cutting of glass tubes with different tube diameters.

Preferably, the ejector rod is an arc rod with an opening facing the glass tube, and an end surface of the ejector rod, which is abutted against the glass tube, is an arc surface.

Through adopting above-mentioned technical scheme, make ejector pin and glass pipe contact that can be better, avoid the ejector pin fish tail glass pipe surface.

Preferably, the cross beam is provided with a sliding groove along the length direction of the cross beam, and the upper end surface of the upright post is in threaded connection with a limiting bolt which penetrates through the sliding groove and adjusts the position of the cross beam.

Through adopting above-mentioned technical scheme, the crossbeam passes through the sliding tray and slides on the stand to fix the position of weighing through spacing bolt, crossbeam position control is more convenient.

Preferably, the upright post is axially and slidably arranged in an upright post sleeve arranged on one side of the upper end surface of the frame, and the outer wall of the upright post sleeve is in threaded connection with a locking bolt which penetrates inwards and abuts against the outer wall of the upright post.

Through adopting above-mentioned technical scheme, the stand slides from top to bottom in the stand sleeve, can adjust the height of crossbeam according to the pipe diameter change of glass pipe, makes the ejector pin support the side at the glass pipe, prevents that the glass pipe from removing, guarantees the cutting accuracy and the quality of glass pipe.

Preferably, the outer arc surface of one end of the arc-shaped cutter bar, which is far away from the cross beam, is provided with a lengthened handle, and the outer arc surface of one end, which is close to the cross beam, is provided with a tension spring which is connected with the cross beam and is in an extension state.

Through adopting above-mentioned technical scheme, through the rotation of the convenient control arc cutter arbor of extension handle, be connected with the extension spring that the department has the extension state between crossbeam and the arc cutter arbor, the cutting knife can rotate and fix to the crossbeam direction under the effect of spring tension after using up, the arc cutter arbor can not influence placing of glass pipe and axial displacement on strutting arrangement, convenient and practical.

Preferably, the supporting device comprises two parallel horizontal rotating shafts which are rotatably connected to two ends of the frame, and a plurality of supporting plates which are used for rotatably supporting the glass tubes are respectively sleeved on the two rotating shafts.

Through adopting above-mentioned technical scheme, strutting arrangement adopts two horizontal rotating shafts to support the glass pipe to the glass pipe is placed and is rotated along with the pivot on the supporting disk, need not to rotate the glass pipe by hand, improves the cutting efficiency of glass pipe.

Preferably, the tail ends of the two rotating shafts are sleeved with driven sprockets with coplanar rotating planes, driving sprockets which are the same as the rotating planes of the driven sprockets are arranged below the two driven sprockets, chains are meshed with the two driven sprockets and the driving sprockets, and the driving sprockets are fixedly connected to an output shaft of the driving motor.

By adopting the technical scheme, the two rotating shafts are driven by one motor and are driven by the chain, so that the rotating speeds of the two rotating shafts are ensured to be the same, and the glass tube rotates at a constant speed.

Preferably, the heating device comprises an air cylinder which is fixed at the end part of the frame and is coaxial with the glass tube, a flame projecting head which extends into the glass tube is fixed at the tail end of a piston rod of the air cylinder, and a plurality of flame projecting ports are formed in the side wall of the flame projecting head.

Through adopting above-mentioned technical scheme, can not fracture completely after the glass pipe cutting, need just can break into two through heating device quenching, promote the flame projecting head through the cylinder, make the stroke of flame projecting head unchangeable to the cylinder is coaxial with the glass pipe, and the flame projecting head can both deepen the position of cutting knife cutting and quench the cutting port at every turn, has guaranteed the good quenching effect of glass pipe, makes the cutting port fracture fast.

As preferred, rack-mount heating device's one end still is equipped with stop device, stop device includes the vertical dead lever of fixing at the frame up end, but the upper end of dead lever is fixed with the horizontal sighting rod parallel with the glass pipe and axial slip through adjusting bolt, but horizontal sighting rod tip is equipped with the gag lever post of support on the glass pipe terminal surface perpendicularly, be provided with the bar groove along length direction on the horizontal sighting rod, adjusting bolt passes bar groove threaded connection on the dead lever.

Through adopting above-mentioned technical scheme, restrict the section of glass pipe through stop device, the horizontal sighting rod passes through the bar groove and removes the regulation along the direction that is on a parallel with the glass pipe, makes the gag lever post apart from the length adjustment of cutting knife, can cut out the glass pipe of different length, adjusts fixedly convenient operation simple to horizontal sighting rod through adjusting bolt.

Preferably, one side of the rack-mounted limiting device is provided with a plurality of U-shaped glass tube placing frames with upward openings, vertical baffles of the glass tube placing frames close to the limiting device are inserted into the strip-shaped grooves in the cross marker post, and the vertical baffles are attached to two side walls of the strip-shaped grooves.

By adopting the technical scheme, the glass tube placing frame is arranged on the frame, when glass is cut, a plurality of glass long tubes can be placed on the glass tube placing frame in advance, and after one glass long tube is cut, the other glass long tube is directly replaced, so that the speed and the efficiency of cutting the glass tube can be increased, and the glass tube does not need to be transported to a cutting machine from a remote place; the perpendicular baffle of glass pipe rack plays and prevents the rolling effect of glass pipe, erects the bar inslot that the baffle inserted on the horizontal marker pole simultaneously, leads the horizontal marker pole through erecting the baffle, when removing the horizontal marker pole, prevents that the horizontal marker pole from rotating around adjusting bolt, and the horizontal marker pole remains throughout with the parallel state of glass pipe, and the gag lever post is perpendicular and the laminating at the terminal surface of glass pipe with the glass pipe, and the glass pipe fracture after the assurance cutting is level and smooth.

In conclusion, the invention has the following beneficial effects: the invention has the advantages that the two sides of the glass tube are abutted by the ejector rods and the cutting knife, so that the glass tube cannot be displaced in the cutting process, the cutting fracture of the glass tube is more orderly, the precision of the cut glass tube is high, and meanwhile, the arc-shaped knife bar is rotationally arranged on the cross beam and can adapt to cutting glass tubes with different tube diameters. The stand slides from top to bottom in the stand sleeve, can adjust the height of crossbeam according to the pipe diameter change of glass pipe, makes the ejector pin support in the side of glass pipe, prevents that the glass pipe from removing, guarantees the cutting accuracy and the quality of glass pipe.

Drawings

FIG. 1 is a schematic structural view of a glass tube cutter;

FIG. 2 is a schematic view showing a mounting structure of a cutter blade and a cutter holder of the glass tube cutting machine;

FIG. 3 is a schematic view showing a structure of a supporting device of the glass tube cutter;

FIG. 4 is a schematic view showing a driving structure of a supporting device of the glass tube cutter;

FIG. 5 is a schematic view showing the structure of a heating device of the glass tube cutter;

FIG. 6 is a schematic view of a stopper of the glass tube cutter;

in the figure, 1, a frame; 11. a control cabinet; 12. a material guide plate; 2. a support device; 20. a fixing plate; 21. a rotating shaft; 211. a guide groove; 22. a support disc; 221. a shaft sleeve; 222. a shaft sleeve lock rod; 23. a driven sprocket; 24. a drive sprocket; 25. a chain; 26. a drive motor; 27. a speed reducer; 28. a guide wheel; 3. a cutting knife; 4. a heating device; 41. a cylinder; 42. a piston rod; 43. a flame projecting head; 44. a flame port; 45. a gas pipe; 46; a cylinder fixing plate; 461. a strip-shaped hole; 47. adjusting a rod; 5. a glass tube; 6. a tool holder; 61. a column; 611. a limit bolt; 612. an upright column sleeve; 613. locking the bolt; 62. a cross beam; 621. a sliding groove; 63. an arc-shaped cutter bar; 64. a top rod; 65. lengthening the handle; 66. an extension spring; 7. a limiting device; 71. fixing the rod; 72. a horizontal marker post; 721. a strip-shaped groove; 73. a limiting rod; 74. adjusting the bolt; 8. placing a glass tube rack; 81. and (5) a vertical baffle.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

A glass tube cutting machine is mainly composed of a machine frame 1, a supporting device 2, a cutting knife 3, a heating device 4, a knife rest 6, a limiting device 7 and the like, wherein the machine frame 1 is a metal frame in a cuboid shape, the upper end face of the machine frame 1 is provided with an opening, the supporting device 2 is fixed on the upper end face of the machine frame 1 along the length direction of the upper end face, and a glass tube 5 is placed on the supporting device 2, as shown in figure 1.

One end of the short side of the upper end face of the rack 1 is fixed with a heating device 4 which can be adjusted up and down, the height of the heating device 4 is larger than that of the supporting device 2, and one end of the upper end face of the rack 1 opposite to the heating device 4 is fixed with a control cabinet 11 which controls the supporting device 2 to work. The position that the long side sideboard of knife rest 1 is close to heating device 4 is equipped with the opening, welded fastening has the stock guide 12 that sets up from the 1 up end of frame to the 1 bottom slope of frame of opening part in the frame 1, installs adjustable knife rest 6 on the outer wall of the top frame 1 of stock guide 12, installs the cutting knife 3 that is used for cutting glass pipe 5 on the knife rest 6, through the position of adjusting knife rest 6, makes cutting knife 3 be located glass pipe 5 top and can contradict on glass pipe 5's outer wall.

The upper end face of the side plate, opposite to the long side plate where the knife rest 6 is located, on the rack 1 is fixed with at least two U-shaped glass tube placing frames 8 with upward openings through bolts, one end of each glass tube placing frame 8 is fixed above the side plate of the rack 1, and the other end of each glass tube placing frame is arranged in a hanging mode in the direction away from the glass tube 5. And a limiting device 7 is arranged at the included angle position of the long side plate of the glass tube placing frame 8 and the short side plate of the heating device 4.

As shown in fig. 2, the tool holder 6 includes several parts, such as a column 61, a beam 62, an arc-shaped tool bar 63, and a ram 64, a column sleeve 612 arranged up and down is welded on the outer wall of the upper frame 1 of the material guide plate 12, the column is inserted into the column sleeve 612, a locking bolt 613 is inserted from the outer wall of the column sleeve 612 to the column 61, and the locking bolt 613 is screwed with the column sleeve 612 to adjust and fix the column 61.

The upper end face of the upright post 61 is in threaded connection with a limit bolt 611 which can be adjusted up and down, the limit bolt 611 penetrates through a sliding groove 621 at the end of the cross beam 62 to fix the cross beam 62, and the sliding groove 621 is an elongated groove which is located at one end of the cross beam 62 and is arranged along the length direction of the cross beam 62, so that the fixed positions of the cross beam 62 and the upright post 61 can be adjusted. The ejector rod 64 is welded at the other end of the cross beam 62 and bends downwards, the ejector rod 64 is a rod body with an upward opening and an arc shape, and the end part of the ejector rod 64 is a smooth curved surface and props against the outer wall of one side of the glass tube 5 close to the upright post 61.

The position that ejector pin 64 is connected with crossbeam 62 still articulates there is arc cutter arbor 63, arc cutter arbor 63 rotates around the tip of crossbeam 62, its rotation plane is perpendicular with the axial direction of glass pipe 5, arc cutter arbor 63 is the downward arc body of rod of opening, the intrados welding of the free end of arc cutter arbor 63 has the blade holder of radial setting, cutting knife 3 is the circular break bar of pin joint at the blade holder tip, its rotation plane is perpendicular with the axial direction of glass pipe 5, through rotating arc cutter arbor 63, cutting knife 3 can contradict on glass pipe 5. The outer arc surface of the free end of the arc-shaped cutter rod 63 is welded with a lengthened handle 65, and the position of the arc-shaped cutter rod 63 can be conveniently adjusted through the lengthened handle 65.

An extension spring 66 in an extended state is connected between the middle position of the upper side surface of the cross beam 62 and the outer arc surface of the arc-shaped cutter bar 63, so that the arc-shaped cutter bar 63 can be fixed above the cross beam 62 in an idle state, and the position adjustment of the glass tube 5 cannot be influenced.

Referring to fig. 3 and 4, the fixing plates 20 are oppositely arranged on the upper end faces of the two short side plates of the tool holder 1, two rotating shafts 21 which are parallel and equal in height are rotatably arranged between the two fixing plates 20, a guide groove 211 is arranged on the rotating shaft 21 along the length direction of the rotating shaft, the rotating shaft 21 is fixedly provided with a plurality of disc-shaped supporting plates 22 for supporting the glass tubes 5, one side of each supporting plate 22 is fixedly provided with a shaft sleeve 221 which is sleeved on the rotating shaft 21, the side wall of the shaft sleeve 221 is in threaded connection with a shaft sleeve locking rod 222, the end part of each shaft sleeve locking rod abuts against the bottom of. When supporting the glass tube 5, the supporting discs 22 on the two rotating shafts 21 are used in a one-to-one correspondence manner, and the two corresponding supporting discs 22 are arranged oppositely or in a staggered manner, so that the stability of the glass tube 5 on the supporting device 2 is ensured.

One end of each of the two rotating shafts 21, which is far away from the heating device 4, is fixed with a driven sprocket 23, a driving motor 26 is fixed on the rack 1 below the two driven sprockets 23, the control cabinet 11 is communicated with the driving motor 26, the output end of the driving motor 26 is sequentially connected with a speed reducer 27 and a driving sprocket 24, the rotating plane of the driving sprocket 24 is the same as the rotating plane of the two driven sprockets 23, the driving sprocket 24 is connected with the two driven sprockets 23 by a chain 25, and the outer side surface of the chain 25 is also engaged with a guide wheel 28. The two driven chain wheels 23 are driven by the driving motor 26 to synchronously rotate, so that the glass tube 5 stably rotates on the supporting disc 22, and the cutting operation of the cutting knife 3 is facilitated.

As shown in fig. 5, the heating device 4 includes a cylinder 41, a piston rod 42 and a flame-throwing head 43, the cylinder 41 is fixed on a cylinder fixing plate 46 by bolts, the cylinder fixing plate 46 is attached to the side wall of the fixing plate 20 far away from the rotating shaft 21, a strip-shaped hole 461 is formed in the cylinder fixing plate 46, and an adjusting rod 47 is screwed on the fixing plate 20 through the strip-shaped hole 461, so as to adjust the height of the cylinder 41. In order to adjust the height of the cylinder 41, the fixing plate 20 is also provided with a hole slot arranged up and down.

The piston rod 42 extends out from the end of the cylinder 41 and penetrates through the cylinder fixing plate 46 and the fixing plate 20, the maximum stroke of the piston rod 42 can reach the rotating plane of the arc-shaped cutter bar 63, the flame thrower 43 is installed at the end of the piston rod 42, the flame thrower 43 is cylindrical, a plurality of flame thrower openings 44 are formed in the side wall of the flame thrower 43, and the gas pipe 45 penetrates through the piston rod 42 and is communicated with the flame thrower 43.

As shown in fig. 6, stop device 7 is installed at the contained angle position of the long side board of fixed glass tube rack 8 and the short side board of fixed heating device 4, the welding of contained angle department has the dead lever 71 of vertical setting, dead lever 71 up end is provided with horizontally horizontal sighting rod 72, sighting rod 72 passes through adjusting bolt 74 to be fixed at the up end of dead lever 71, adjusting bolt 74 and dead lever 71 threaded connection and upper and lower position are adjustable, sighting rod 72 is equipped with bar groove 721 along its length direction, adjusting bolt 74 wears to establish in bar groove 721, make sighting rod 72's axial direction adjustable. One end of the horizontal marker post 72 above the frame 1 is vertically connected with a limiting rod 73, and the limiting rod 73 is perpendicular to the piston rod 42 and points to the direction of the piston rod 42. When the glass tube 5 is placed on the support device 2, the end thereof can abut against the stopper rod 73.

The vertical baffle 81 on one side of the glass tube placing frame 8 close to the fixing rod 71 is positioned on the upper side face of the long side edge plate of the rack 1, the vertical baffle 81 upwards penetrates through the strip-shaped groove 721 of the cross mark rod 72, and the vertical baffle 81 is attached to two side walls of the strip-shaped groove 721, so that the cross mark rod 72 can only axially move and cannot rotate around the adjusting bolt 74, and the limiting rod 73 is kept in a state perpendicular to the piston rod 42 all the time.

When the cutting machine works, the positions of the cross mark rod 72 and the limiting rod 73 are adjusted through the adjusting bolt 74 according to the length of the glass tube 5 to be cut, and then the glass tube 5 is placed on the supporting disk 22 of the supporting device 2, so that the end part of the glass tube 5 is abutted against the limiting rod 73; then, according to the pipe diameter of the glass tube 5, the positions of the upright post 61 and the cross beam 62 are adjusted, so that the ejector rod 64 is abutted against the side surface of the glass tube 5; turning on a power switch of a driving motor 26, driving the rotating shaft 21 to rotate through the chain 25, thereby driving the glass tube 5 to rotate along with the supporting plate 22; a person holds the lengthened handle 65 by hand, rotates the arc-shaped cutter bar 63 to enable the cutting knife 3 to abut against the outer wall of the glass tube 5, presses the arc-shaped cutter bar 63 downwards, and finishes the cutting work of the cutting knife 3 on the glass tube 5 in the rotating process of the glass tube 5; the lengthened handle 65 is loosened, the arc-shaped cutter bar 63 is bounced open under the action of the extension spring 66, the switch of the cylinder 41 is opened, the piston rod 42 extends forwards and is inserted into the glass tube 5, the flame spray head 43 is just positioned at the inner side of the cutting surface of the cutting knife 3, flame is sprayed outwards from the flame spray head 43, the cut of the glass tube 5 is quenched, the glass tube 5 is broken along the cut, the broken glass tube 5 falls on the piston rod 42, the glass tube 5 is manually taken down, and the piston rod 41 is retracted. The above-described operation is repeated to complete the cutting work of the glass tube 5.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a glass tube clipper, includes that frame (1), level erect be used for on frame (1) supporting device (2) of support glass pipe (5), set up cutting knife (3) above supporting device (2) and heating device (4) that carry out the heating to glass pipe (5), its characterized in that: the cutting knife (3) is installed on the knife rest (6), the knife rest (6) comprises an upright post (61) arranged on one side of the rack (1) and a cross beam (62) which is arranged on the top of the upright post (61) and can move axially, one end, close to the glass tube (5), of the cross beam (62) is rotatably connected with an arc-shaped knife bar (63) with an opening facing the glass tube (5), the swinging plane of the arc-shaped knife bar (63) is perpendicular to the axis of the glass tube (5), the cutting knife (3) is arranged on the inner arc surface of one end, far away from the cross beam, of the arc-shaped knife bar (63), and one side, close to the upright post (61), of the glass tube (5) is provided with an ejector rod (; the heating device (4) comprises an air cylinder (41) which is fixed at the end part of the rack (1) and is coaxial with the glass tube (5), a fire-jet head (43) which extends into the glass tube (5) is fixed at the tail end of a piston rod (42) of the air cylinder (41), and a plurality of fire-jet ports (44) are formed in the side wall of the fire-jet head (43); a limiting device (7) is further arranged at one end, where the heating device (4) is installed, of the rack (1), the limiting device (7) comprises a fixing rod (71) vertically fixed on the upper end face of the rack (1), a cross mark rod (72) which is parallel to the glass tube (5) and can axially slide is fixed at the upper end of the fixing rod (71) through an adjusting bolt (74), a limiting rod (73) which abuts against the end face of the glass tube (5) is vertically arranged at the end part of the cross mark rod (72), a strip-shaped groove (721) is formed in the cross mark rod (72) along the length direction, and the adjusting bolt (74) penetrates through the strip-shaped groove (721) and is in threaded connection with the fixing rod (71); one side of frame (1) installation stop device (7) sets up U-shaped glass pipe rack (8) that a plurality of opening is up, is close to erect baffle (81) of glass pipe rack (8) of stop device (7) and inserts in bar groove (721) on horizontal sighting rod (72), erect baffle (81) and laminate on the both sides wall of bar groove (721).

2. The glass tube cutter as defined in claim 1, wherein: the ejector rod (64) is an arc rod with an opening facing the direction of the glass tube (5), and the end face of the end part of the ejector rod (64) abutted against the glass tube (5) is an arc face.

3. The glass tube cutter as defined in claim 1, wherein: a sliding groove (621) is formed in the cross beam (62) along the length direction of the cross beam, and a limiting bolt (611) which penetrates through the sliding groove (621) and adjusts the position of the cross beam (62) is connected to the upper end face of the upright post (61) in a threaded mode.

4. The glass tube cutter as defined in claim 1, wherein: the upright post (61) is axially slidably arranged in an upright post sleeve (612) arranged on one side of the upper end surface of the frame (1), and a locking bolt (613) which penetrates inwards and abuts against the outer wall of the upright post (61) is connected to the outer wall of the upright post sleeve (612) in a threaded manner.

5. The glass tube cutter as defined in claim 1, wherein: an extension handle (65) is arranged on the outer arc surface of one end, far away from the cross beam (62), of the arc-shaped cutter bar (63), and an extension spring (66) which is connected with the cross beam (62) and is in an extension state is arranged on the outer arc surface of one end, near the cross beam (62).

6. The glass tube cutter as defined in claim 1, wherein: the supporting device (2) comprises two equal-height horizontal rotating shafts (21) which are connected to the two ends of the rack (1) in a rotating mode, and the rotating shafts (21) are respectively sleeved with a plurality of supporting discs (22) which are used for rotatably supporting the glass tubes (5).

7. The glass tube cutter as defined in claim 6, wherein: two the terminal cover of pivot (21) is equipped with driven sprocket (23) that rotate the coplane, two driven sprocket (23) below is equipped with and rotates the same drive sprocket (24) of plane with driven sprocket (23), two the meshing has chain (25) on driven sprocket (23) and drive sprocket (24), drive sprocket (24) fixed connection is on the output shaft of driving motor (26).