CN112045751A

CN112045751A - Double-pipe synchronous cutting device

Info

Publication number: CN112045751A
Application number: CN202010891277.3A
Authority: CN
Inventors: 陈春
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-30
Filing date: 2020-08-30
Publication date: 2020-12-08

Abstract

The invention relates to the technical field of pipe fitting processing, in particular to a double-pipe fitting synchronous cutting device, which comprises a processing table, a bidirectional synchronous cutting mechanism and a lifting mechanism, wherein the lifting mechanism is arranged at the lower end of the processing table and comprises two symmetrical horizontal lifting plates which are arranged at intervals, a rectangular through hole for each lifting plate to move is formed in the processing table, a horizontally arranged feeding slide way is respectively arranged on the upper surface of each lifting plate, a clamp capable of abutting against a pipe fitting is respectively arranged right above each feeding slide way, the bidirectional synchronous cutting mechanism comprises opposite rods which are transversely arranged and can horizontally move in opposite directions, two ends of each opposite rod respectively extend towards the direction of each feeding slide way, the axes of the opposite rods are respectively and vertically intersected with the length direction of each feeding slide way, two ends of each opposite rod are respectively provided with a cutting knife, and the device can simultaneously and automatically cut two pipe fittings, high efficiency, low cost and energy saving.

Description

Double-pipe synchronous cutting device

Technical Field

The invention relates to the technical field of pipe fitting machining, in particular to a double-pipe fitting synchronous cutting device.

Background

In many cases, various intersecting line shapes are required to be machined at the end part of a pipe structure to facilitate welding combination, in addition, pipe blank breaking, pipe wall cutting and grooving are also frequently encountered, the 'separation' or 'cutting' of the wall material of the pipe is an important content of pipe forming, pipe cutting methods are numerous, mechanical cutting, punching, advanced laser cutting and the like are commonly used, for the condition of small batch, a mechanical cutting mode such as turning, milling, circular disc saw cutting, grinding wheel cutting and the like is mainly adopted, in pipe machining, a long pipe is cut to the length required by machining, and in a traditional cutting device, the pipe is independently fed, cut, machined and then blanked, so that a double-pipe synchronous cutting device is provided, and the problem is solved.

Disclosure of Invention

In order to solve the technical problem, the double-pipe synchronous cutting device is provided, and the device can simultaneously automatically cut two pipes, and is high in efficiency, low in cost and energy-saving.

In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:

a double-pipe synchronous cutting device comprises a processing table, a bidirectional synchronous cutting mechanism and a lifting mechanism, wherein the lifting mechanism is arranged at the lower end of the processing table and comprises two symmetrical horizontal lifting plates which are arranged at intervals, each horizontal lifting plate can move towards the upper part of the processing table, a rectangular through hole for each lifting plate to move is formed in the processing table, a horizontally arranged feeding slide way is arranged on the upper surface of each lifting plate, a clamp capable of abutting against a pipe is arranged right above each feeding slide way, the bidirectional synchronous cutting mechanism is positioned between the two lifting plates and arranged on the processing table, the bidirectional synchronous cutting mechanism comprises opposite rods which are transversely arranged and can move horizontally in opposite directions, two ends of the opposite rods extend towards the direction of each feeding slide way respectively, and the axes of the opposite rods are perpendicularly intersected with the length direction of each feeding slide way respectively, cutting knives are respectively arranged at two ends of the opposite rods.

Preferably, two-way synchronous cutting mechanism includes driving motor, the action wheel, from the driving wheel, the bearing frame, first pivot and carousel, driving motor is horizontal installation in bottom one side of processing platform, the bearing frame is installed in one side that the top of processing platform is close to driving motor, first pivot is the level and can the pivoted insert the inner circle of locating the bearing frame, the both ends of first pivot are outwards extended respectively, install the one end at first pivot from the driving wheel, the other one end at first pivot is installed to the carousel, the output at driving motor is installed to the action wheel, the action wheel passes through the hold-in range and is connected with the transmission of following driving wheel.

Preferably, the rods include a vertical lantern ring and two horizontal rods symmetrically arranged on two sides of the vertical lantern ring, the vertical lantern ring is located on one side of the turntable, a poking pin which is horizontal and can slide up and down along an inner ring of the vertical lantern ring is arranged at the edge of the turntable, sliding sleeves are respectively arranged on two sides of the turntable, the bottom of each sliding sleeve is respectively connected with the top of the machining table, one end of each horizontal rod can slide respectively and penetrate through the inner ring of each sliding sleeve to extend linearly outwards, and the extending end of each horizontal rod is connected with the cutting knife respectively.

Preferably, every be equipped with the cylinder that is vertical setting respectively directly over anchor clamps, the lateral wall of every cylinder is connected through the top of first support lifter plate respectively, and the output of every cylinder sets up downwards respectively, and the output of every cylinder is connected with the top of every anchor clamps respectively, and the conflict portion of every anchor clamps is equipped with the rubber layer respectively.

Preferably, each one end of feeding slide all is provided with the guide pulley that is used for carrying the pipe fitting to remove, and one side of the other end of feeding slide is equipped with the blanking slide that the slope set up, and one side that feeding slide is close to the blanking slide is equipped with dodges the incision.

Preferably, each cutting knife is horizontally arranged above one end of each blanking slide way adjacent to each blanking slide way, and each blanking slide way are respectively provided with an avoiding groove for avoiding the movement of each cutting knife.

Preferably, every be equipped with the fixed loop bar that is vertical setting respectively under the lifter plate, the upper end outer wall of fixed loop bar is connected with the inside wall of processing platform through the connecting plate, the inside of fixed loop bar is equipped with the screw thread loop bar that is vertical setting, the top of screw thread loop bar is connected with the bottom center department of lifter plate, the inner circle of fixed loop bar is equipped with the internal thread that is used for supplying screw thread loop bar threaded connection, the inner circle of screw thread loop bar is equipped with interior pole, the both sides of interior pole are equipped with respectively to support the feeler, be equipped with the conflict spout that is used for supplying every conflict strip to contradict on the screw thread loop bar respectively, the below of fixed loop bar is equipped with and is the vertical horizontal plate of level, the both ends of horizontal plate are connected with the lower extreme inside wall of processing platform respectively, the bottom of interior pole is equipped with the second pivot, the second pivot lower.

Preferably, two sides of the bottom of each lifting plate are respectively provided with a vertically arranged limiting polished rod, and each horizontal plate is respectively provided with a limiting sleeve for each limiting polished rod to pass through.

Preferably, elevating system still includes double-shaft motor, two third pivots, two first awl teeth and two second awl teeth, every second awl tooth is the bottom extension end of horizontal installation at every second pivot respectively, double-shaft motor is the level and is located between two second awl teeth, double-shaft motor installs the lower extreme at the processing platform, two work ends of double-shaft motor extend the setting respectively towards the direction of every second awl tooth, every third pivot is every work end of horizontal installation at double-shaft motor respectively, the one end of every third pivot extends the setting respectively to the direction of every second awl tooth, the extension end at every third pivot is installed respectively to every first awl tooth, every first awl tooth meshes the setting with every second awl tooth respectively.

Compared with the prior art, the invention has the beneficial effects that:

a double-pipe synchronous cutting device is characterized in that a pipe to be cut is placed on each feeding slide rail through a worker, the pipe can be conveyed in a guiding mode through a guide wheel arranged on each feeding slide rail until the position required for conveying the pipe is stopped, each air cylinder is started after each pipe is conveyed to the required position along each feeding slide rail respectively, each air cylinder drives each clamp to abut against two sides of a processing position of the pipe respectively, the pipe is further positioned, a rubber layer arranged on the abutting portion of each clamp is used for preventing slipping, after the pipe on each feeding slide rail is positioned by each clamp respectively, a driving motor is started, the driving motor drives a driving wheel and a driven wheel to rotate, the driven wheel drives a first rotating shaft to rotate, the first rotating shaft drives a rotating disc to rotate, the rotating disc drives a shifting pin to rotate along the rotating disc, the shifting pin drives a vertical sleeve ring and two horizontal rods to move horizontally and oppositely along each sliding sleeve, and then drive each cutting knife to move horizontally and oppositely, start the double-shaft motor, the double-shaft motor drives each third rotating shaft to rotate at the same time, drive each first bevel gear to rotate through each third rotating shaft respectively, drive each second bevel gear and each second rotating shaft to rotate through each first bevel gear respectively, drive each inner rod to rotate through each second rotating shaft respectively, drive each conflict chute arranged in each conflict strip conflict thread loop rod respectively by each inner rod to enable the thread loop rod to rotate and move along the fixed loop rod, drive the lifting plate to move upwards through one end of the thread loop rod, limit each limit polish rod arranged to move along each limit sleeve respectively, and further drive the pipe fitting positioned on each feeding slideway to move towards the cutting knife, cut the pipe fitting through each cutting knife, each cut pipe fitting discharges the pipe fitting through each discharging slideway, the equipment can simultaneously carry out automatic cutting on two pipe fittings, and has the advantages of high efficiency, low cost and energy conservation.

Drawings

FIG. 1 is a first perspective view of the present invention;

FIG. 2 is an enlarged view of the invention at A in FIG. 1;

FIG. 3 is a schematic perspective view of the present invention;

FIG. 4 is an enlarged view of the invention at B in FIG. 3;

FIG. 5 is a side view of the present invention;

FIG. 6 is a top view of the present invention;

FIG. 7 is a cross-sectional view taken along line C-C of FIG. 6 of the present invention;

FIG. 8 is a cross-sectional view taken along D-D of FIG. 6 of the present invention;

FIG. 9 is a third schematic perspective view of the present invention;

fig. 10 is a partially exploded view of the lift mechanism of the present invention.

Description of the drawings:

1-a processing table; 2-horizontal lifting plate; 3-rectangular through hole; 4-a feed chute; 5, clamping; 6-opposite rods; 7-a cutter; 8-driving a motor; 9-driving wheel; 10-a driven wheel; 11-a bearing seat; 12-a first shaft; 13-a turntable; 14-a vertical collar; 15-horizontal bar; 16-a tumbler pin; 17-a sliding sleeve; 18-a cylinder; 19-a rubber layer; 20-a guide wheel; 21-a blanking slideway; 22-avoidance groove; 23-fixing a sleeve; 24-a threaded shank; 25-an inner rod; 26-a countertouch bar; 27-a horizontal plate; 28-a second shaft; 29-a limit polish rod; 30-a limiting sleeve; 31-a two-shaft motor; 32-a third rotating shaft; 33-a first bevel gear; 34-second taper tooth.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

Referring to fig. 1 to 10, a double-pipe synchronous cutting device comprises a processing table 1, a bidirectional synchronous cutting mechanism and a lifting mechanism, wherein the lifting mechanism is arranged at the lower end of the processing table 1, the lifting mechanism comprises two horizontal lifting plates 2 which are symmetrically arranged at intervals, each horizontal lifting plate 2 can be respectively arranged above the processing table 1 in a moving way, a rectangular through opening 3 for each lifting plate to move is arranged on the processing table 1, a feeding slide way 4 which is horizontally arranged is respectively arranged on the upper surface of each lifting plate, a clamp 5 which can be abutted against a pipe fitting is respectively arranged right above each feeding slide way 4, the bidirectional synchronous cutting mechanism is positioned between the two lifting plates and is arranged on the processing table 1, the bidirectional synchronous cutting mechanism comprises opposite rods 6 which are transversely arranged and can horizontally move in opposite directions, two ends of each opposite rod 6 extend towards the direction of each feeding slide way 4, the axial lines of the opposite rods 6 are respectively and vertically intersected with the length direction of each feeding slideway 4, and cutting knives 7 are respectively arranged at the two ends of the opposite rods 6.

Two-way synchronous cutting mechanism includes driving motor 8, action wheel 9, follow driving wheel 10, bearing frame 11, first pivot 12 and carousel 13, driving motor 8 is horizontal installation in bottom one side of processing platform 1, one side that driving motor 8 is close to at the top of processing platform 1 is installed to bearing frame 11, first pivot 12 is the level and can the pivoted insert the inner circle of locating bearing frame 11, the both ends of first pivot 12 outwards extend respectively, install the one end at first pivot 12 from driving wheel 10, carousel 13 installs the other one end at first pivot 12, the output at driving motor 8 is installed to action wheel 9, action wheel 9 is connected with driven driving wheel 10 transmission through the hold-in range.

The opposite rod 6 comprises a vertical sleeve ring 14 and two horizontal rods 15 symmetrically arranged on two sides of the vertical sleeve ring 14, the vertical sleeve ring 14 is positioned on one side of a rotary table 13, a poking pin 16 which is horizontal and can slide up and down along an inner ring of the vertical sleeve ring 14 is arranged at the edge of the rotary table 13, two sides of the rotary table 13 are respectively provided with a sliding sleeve 17, the bottom of each sliding sleeve 17 is respectively connected with the top of the processing table 1, one end of each horizontal rod 15 can respectively slide and penetrate through the inner ring of each sliding sleeve 17 to extend outwards in a straight line, the extending end of each horizontal rod 15 is respectively connected with a cutting knife 7, when a pipe on each feeding slideway 4 is respectively positioned by each clamp 5, a driving motor 8 is started, the driving motor 8 drives a driving wheel 9 and a driven wheel 10 to rotate, the driven wheel 10 drives a first rotary shaft 12 to rotate, the first rotary shaft 12 drives the rotary table 13 to rotate, the rotary table, the toggle pin 16 drives the vertical sleeve ring 14 and the two horizontal rods 15 to move horizontally and oppositely along each sliding sleeve 17, and further drives each cutting knife 7 to move horizontally and oppositely.

Be equipped with the cylinder 18 that is vertical setting respectively directly over every anchor clamps 5, the lateral wall of every cylinder 18 is connected through the top of first support lifter plate respectively, the output of every cylinder 18 sets up down respectively, the output of every cylinder 18 is connected with the top of every anchor clamps 5 respectively, the conflict part of every anchor clamps 5 is equipped with rubber layer 19 respectively, after every pipe fitting is carried to required position along every feeding slide 4 respectively, start every cylinder 18, drive every anchor clamps 5 respectively through every cylinder 18 and contradict the both sides of the processing department of pipe fitting, and then the pipe fitting is fixed a position, the rubber layer 19 that the conflict part of every anchor clamps 5 set up respectively is used for antiskid.

One end of each feeding slide way 4 is provided with a guide wheel 20 used for conveying pipe fittings to move, one side of the other end of each feeding slide way 4 is provided with a blanking slide way 21 arranged obliquely, one side, close to the blanking slide way 21, of each feeding slide way 4 is provided with an avoiding notch, pipe fittings to be cut are placed on each feeding slide way 4 through a worker, the pipe fittings can be conveyed through the guide wheels 20 arranged on each feeding slide way 4 in a guiding mode, and the position of the pipe fittings required to be conveyed is stopped.

Each cutting knife 7 is horizontally arranged above one end of each blanking slide 21 adjacent to one end of each blanking slide, each blanking slide 21 is provided with an avoidance groove 22 used for avoiding the movement of each cutting knife 7, and each cut pipe fitting is blanked through each blanking slide 21.

Be equipped with the fixed cover 23 pole that is vertical setting respectively under every lifter plate, the upper end outer wall of fixed cover 23 pole is connected with the inside wall of processing platform 1 through the connecting plate, the inside of fixed cover 23 pole is equipped with the screw loop bar 24 that is vertical setting, the top of screw loop bar 24 is connected with the bottom center department of lifter plate, the inner circle of fixed cover 23 pole is equipped with the internal thread that is used for supplying 24 threaded connection of screw loop bar, the inner circle of screw loop bar 24 is equipped with interior pole 25, the both sides of interior pole 25 are equipped with respectively to touch strip 26, be equipped with the conflict spout that is used for supplying every to touch strip 26 to contradict on the screw loop bar 24 respectively, the below of fixed cover 23 pole is equipped with and is the vertical horizontal plate 27 of level, the both ends of horizontal plate 27 are connected with the lower extreme inside wall of processing platform 1 respectively, the bottom of interior pole 25 is equipped with second pivot 28, second pivot 28 lower extreme can the.

The bottom both sides of every lifter plate are equipped with respectively and are the spacing polished rod 29 of vertical setting, be equipped with respectively on every horizontal plate 27 and be used for supplying the spacing sleeve pipe 30 that every spacing polished rod 29 walked, every second pivot 28 drives pole 25 rotation in every respectively, pole 25 drives every conflict slide groove that sets up respectively on every conflict strip 26 conflict screw loop pole 24 and makes screw loop pole 24 carry out rotary motion along fixed cover 23 pole, the one end through screw loop pole 24 drives lifter plate rebound, every spacing polished rod 29 of setting carries out spacing removal along every spacing sleeve pipe 30 respectively, and then drive the pipe fitting after the location on every feeding slide 4 and remove towards cutting knife 7, cut the pipe fitting through every cutting knife 7.

The lifting mechanism further comprises a double-shaft motor 31, two third rotating shafts 32, two first bevel teeth 33 and two second bevel teeth 34, wherein each second bevel tooth 34 is horizontally arranged at the bottom extending end of each second rotating shaft 28, the double-shaft motor 31 is horizontally arranged between the two second bevel teeth 34, the double-shaft motor 31 is arranged at the lower end of the processing table 1, two working ends of the double-shaft motor 31 extend towards the direction of each second bevel tooth 34, each third rotating shaft 32 is horizontally arranged at each working end of the double-shaft motor 31, one end of each third rotating shaft 32 extends towards the direction of each second bevel tooth 34, each first bevel tooth 33 is arranged at the extending end of each third rotating shaft 32, each first bevel tooth 33 is meshed with each second bevel tooth 34, the double-shaft motor 31 is started, and the double-shaft motor 31 drives each third rotating shaft 32 to rotate at the same time, each first bevel gear 33 is rotated by each third rotating shaft 32, and each second bevel gear 34 and each second rotating shaft 28 are rotated by each first bevel gear 33.

The working principle of the invention is as follows: a pipe to be cut is placed on each feeding slide 4 through a worker, the pipe can be conveyed in a guiding mode through a guide wheel 20 arranged on each feeding slide 4 until the position required for conveying the pipe is stopped, each air cylinder 18 is started after each pipe is conveyed to the required position along each feeding slide 4, each clamp 5 is driven to abut against the two sides of a processing position of the pipe through each air cylinder 18, the pipe is further positioned, a rubber layer 19 arranged on the abutting part of each clamp 5 is used for preventing slipping, after the pipe on each feeding slide 4 is positioned by each clamp 5, a driving motor 8 is started, the driving motor 8 drives a driving wheel 9 and a driven wheel 10 to rotate, the driven wheel 10 drives a first rotating shaft 12 to rotate, the first rotating shaft 12 drives a rotating disc 13 to rotate, the rotating disc 13 drives a shifting pin 16 to rotate along the rotating disc 13, the poking pin 16 drives the vertical sleeve ring 14 and the two horizontal rods 15 to horizontally move along each sliding sleeve 17, so as to drive each cutting knife 7 to horizontally move in opposite directions, the double-shaft motor 31 is started, the double-shaft motor 31 simultaneously drives each third rotating shaft 32 to rotate, each first bevel gear 33 is respectively driven to rotate through each third rotating shaft 32, each second bevel gear 34 and each second rotating shaft 28 are respectively driven to rotate through each first bevel gear 33, each second rotating shaft 28 respectively drives each inner rod 25 to rotate, each inner rod 25 respectively drives each contact strip 26 to abut against each abutting chute arranged in the threaded sleeve rod 24, so that the threaded sleeve rod 24 rotates and moves along the fixed sleeve 23 rod, one end of the threaded sleeve rod 24 drives the lifting plate to move upwards, each limit polished rod 29 is respectively arranged to perform limit movement along each limit sleeve 30, and further drives the pipe fitting positioned on each feeding slide 4 to move towards the cutting knife 7, the pipe is cut by each cutting knife 7, and each cut pipe is blanked by each blanking chute 21.

The foregoing has described the general principles, principal features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A double-pipe synchronous cutting device is characterized by comprising a processing table (1), a bidirectional synchronous cutting mechanism and a lifting mechanism, wherein the lifting mechanism is arranged at the lower end of the processing table (1), the lifting mechanism comprises two horizontal lifting plates (2) which are symmetrical and arranged at intervals, each horizontal lifting plate (2) can be respectively arranged above the processing table (1) in a moving way, a rectangular through hole (3) for each lifting plate to move is formed in the processing table (1), a feeding slide way (4) which is horizontally arranged is respectively arranged on the upper surface of each lifting plate, a clamp (5) which can be abutted against a pipe fitting is respectively arranged right above each feeding slide way (4), the bidirectional synchronous cutting mechanism is positioned between the two lifting plates, the bidirectional synchronous cutting mechanism is arranged on the processing table (1), the bidirectional synchronous cutting mechanism comprises opposite rods (6) which are transversely arranged and can horizontally move in opposite directions, the both ends of pole (6) extend the setting towards the direction of every feeding slide (4) respectively in opposite directions, and the axis of pole (6) is crossing perpendicularly with the length direction of every feeding slide (4) respectively in opposite directions, and the both ends of pole (6) are equipped with cutting knife (7) respectively in opposite directions.

2. The double-pipe synchronous cutting device according to claim 1, wherein the bidirectional synchronous cutting mechanism comprises a driving motor (8), a driving wheel (9) and a driven wheel (10), bearing frame (11), first pivot (12) and carousel (13), driving motor (8) are horizontal installation in the bottom one side of processing platform (1), one side that the top at processing platform (1) is close to driving motor (8) is installed in bearing frame (11), first pivot (12) are the level and can the pivoted insert the inner circle of locating bearing frame (11), the both ends of first pivot (12) outwards extend respectively, install the one end at first pivot (12) from driving wheel (10), install the other one end at first pivot (12) in carousel (13), the output at driving motor (8) is installed in action wheel (9), action wheel (9) are connected with driven wheel (10) transmission through the hold-in range.

3. The double-pipe synchronous cutting device according to claim 2, wherein the opposite rods (6) comprise a vertical sleeve ring (14) and two horizontal rods (15) symmetrically arranged on two sides of the vertical sleeve ring (14), the vertical sleeve ring (14) is arranged on one side of the rotary table (13), a stirring pin (16) which is horizontal and can slide up and down along an inner ring of the vertical sleeve ring (14) is arranged at the edge of the rotary table (13), sliding sleeves (17) are respectively arranged on two sides of the rotary table (13), the bottom of each sliding sleeve (17) is respectively connected with the top of the machining table (1), one end of each horizontal rod (15) can respectively slide and linearly extend outwards through the inner ring of each sliding sleeve (17), and the extending end of each horizontal rod (15) is respectively connected with the cutting knife (7).

4. The double-pipe synchronous cutting device according to claim 3, wherein a vertically arranged air cylinder (18) is respectively arranged right above each clamp (5), the side wall of each air cylinder (18) is respectively connected with the top of the first support lifting plate, the output end of each air cylinder (18) is respectively arranged downwards, the output end of each air cylinder (18) is respectively connected with the top of each clamp (5), and the abutting part of each clamp (5) is respectively provided with a rubber layer (19).

5. The double-pipe synchronous cutting device according to claim 4, wherein one end of each feeding slideway (4) is provided with a guide wheel (20) for conveying the pipe to move, one side of the other end of each feeding slideway (4) is provided with a blanking slideway (21) which is obliquely arranged, and one side of each feeding slideway (4) close to the blanking slideway (21) is provided with an avoiding notch.

6. The double-pipe synchronous cutting device according to claim 5, wherein each cutting knife (7) is horizontally arranged above one end adjacent to each blanking slideway (21) and each blanking slideway, and each blanking slideway (21) is provided with an avoiding groove (22) for avoiding the movement of each cutting knife (7).

7. The double-pipe synchronous cutting device according to claim 6, wherein a vertically arranged fixing sleeve (23) rod is respectively arranged under each lifting plate, the outer wall of the upper end of the fixing sleeve (23) rod is connected with the inner side wall of the processing table (1) through a connecting plate, a vertically arranged threaded sleeve rod (24) is arranged inside the fixing sleeve (23), the top end of the threaded sleeve rod (24) is connected with the center of the bottom of the lifting plate, an inner ring of the fixing sleeve (23) rod is provided with an inner thread for threaded connection of the threaded sleeve rod (24), an inner rod (25) is arranged on the inner ring of the threaded sleeve rod (24), the two sides of the inner rod (25) are respectively provided with the touch bars (26), the threaded sleeve rod (24) is respectively provided with a touch chute for touch of each touch bar (26), a horizontal vertical horizontal plate (27) is arranged below the fixing sleeve (23) rod, the two ends of the horizontal plate (27) are respectively connected with the inner side wall of the lower end of the processing table (1), a second rotating shaft (28) is arranged at the bottom of the inner rod (25), and the lower end of the second rotating shaft (28) can rotate and penetrate through the two surfaces of the horizontal plate (27) to extend downwards.

8. The double-pipe synchronous cutting device according to claim 7, wherein the two sides of the bottom of each lifting plate are respectively provided with a vertically arranged limiting polished rod (29), and each horizontal plate (27) is respectively provided with a limiting sleeve (30) for each limiting polished rod (29) to pass through.

9. The double-pipe synchronous cutting device according to claim 8, wherein the lifting mechanism further comprises a double-shaft motor (31), two third rotating shafts (32), two first bevel teeth (33) and two second bevel teeth (34), each second bevel tooth (34) is horizontally arranged at the bottom extending end of each second rotating shaft (28), the double-shaft motor (31) is horizontally arranged between the two second bevel teeth (34), the double-shaft motor (31) is arranged at the lower end of the processing table (1), the two working ends of the double-shaft motor (31) are respectively arranged in an extending manner towards the direction of each second bevel tooth (34), each third rotating shaft (32) is horizontally arranged at each working end of the double-shaft motor (31), one end of each third rotating shaft (32) is respectively arranged in an extending manner towards the direction of each third bevel tooth (34), each first bevel tooth (33) is respectively arranged at the extending end of each third rotating shaft (32), each first conical tooth (33) is respectively meshed with each second conical tooth (34).