Fixed-length cutting device for titanium welded pipe machining

Abstract

The invention relates to the technical field of titanium pipe cutting, in particular to a fixed-length cutting device for titanium welded pipe machining, which comprises a pipe cutting table, two control assemblies and a contact maintaining assembly, the upper end of the pipe cutting table is provided with a following moving seat through a sliding adaptation assembly, and the sliding adaptation assembly comprises two stable sliding rods; during cutting operation in the continuous production process of the titanium welded pipe, when the titanium welded pipe moves into cutting equipment or a cutting machine tool, fixed-length detection is conducted through an existing sensing module, and when fixed-length cutting is needed, through mutual cooperation of a control assembly and a contact maintaining assembly, the fixed-length detection is conducted, and the fixed-length cutting operation is completed. The follow-up moving seat moves along with the titanium welded pipe, the titanium welded pipe is stably cut in the moving process, and under the action of a plurality of smoke dust suction holes and a keeping suction cup, smoke dust in the cutting process can be treated, and the titanium welded pipe with the thin pipe wall can be cut in a shape keeping mode.

Description

Technical Field

[0001] The invention relates to the technical field of titanium tube cutting, in particular to a length-cutting device for titanium welded tube processing. Background Art

[0002] Titanium welded pipes are made of titanium and titanium alloy coils or wide plates that are rolled into tubes and then welded. Titanium welded pipes have uniform wall thickness, good concentricity, high internal and external surface finish, high material utilization and production efficiency, short production process, good finished product consistency, and small pipe length restrictions. They can be made into straight pipes and products of various calibers, especially high-strength, high-precision thin-walled titanium welded pipes. The product specifications and varieties are rich, which can meet the extensive market needs of many industries such as energy and chemical industry, power engineering, marine desalination, automotive engineering, water treatment equipment, and air conditioning equipment.

[0003] The existing patent with publication number CN118808742A discloses a titanium alloy pipe cutting device for cutting titanium alloy pipes. The inner support assembly is fixedly connected to the inner sides of the four clamping plates of the rotating clamping assembly. The inner support assembly includes two single support mechanisms. The two single support mechanisms are telescopically connected through a telescopic cylinder. The two single support mechanisms respectively support the two sides of the titanium alloy pipe to be cut. The matching assembly and the conveying mechanism can cooperate to transport the titanium alloy pipe and support the inner wall of the titanium alloy pipe. When the titanium welded pipe is cut, the above scheme inserts the inner support assembly on one side to ensure the stability of the titanium welded pipe during cutting. When the titanium welded pipe is in continuous rolling During welding and cutting, titanium welded pipes need to be cut to a fixed length. At this time, the common internal support mechanism cannot support the titanium welded pipe. During the fixed-length cutting, the passing titanium welded pipe is mainly measured by sensors. When the appropriate length is reached, the cutting equipment moves to cut the titanium welded pipe. During the cutting operation, since the pipeline continues to move, the cutting equipment needs to be coordinated and moved synchronously by the driving equipment to achieve fixed-length cutting during the moving process. However, the moving speed of the external compensation and the moving speed of the pipeline are prone to deviation, which affects the accuracy of the cutting to a fixed length. When the wall thickness of the titanium welded pipe is small, the titanium welded pipe may be deformed during the cutting process. Summary of the invention

[0004] The object of the present invention is to provide a length-cutting device for titanium welded pipe processing to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a titanium welded pipe cutting device for cutting to length, comprising:

[0006] A pipe cutting table, wherein the upper end of the pipe cutting table is provided with a follow-up movable seat through a sliding adaptation component, the sliding adaptation component includes two stable slide bars, a cutting console is provided on the side of the follow-up movable seat away from the stable slide bars, and a cutting knife is movably installed on one side of the cutting console;

[0007] Two control components, the two control components are respectively arranged on both sides of the upper end of the follower moving seat, the control components include a control seat, a control piston plate and a U-shaped control tube, the control piston plate is movably plugged into the control seat, the U-shaped control tube is movably plugged into one side of the control seat, and the lower end of the control seat is symmetrically provided with two movable guide grooves, and the movable guide grooves are horizontally movably plugged with guide arms;

[0008] A contact holding component is arranged between two control seats, and the contact holding component includes four assembly boxes and four combined arc blocks. One side of the four assembly boxes is respectively connected to four guide arms, and the four combined arc blocks are combined in pairs to form a ring structure, and the inner arc surfaces of the combined arc blocks are symmetrically provided with a number of holding suction cups.

[0009] Preferably, the two stabilizing slide bars are horizontally symmetrically arranged on both sides of the upper end of the pipe cutting table, the stabilizing slide bars are consistent with the pipeline moving direction of the titanium welded pipe, the follower moving seat is movably sleeved on the two stabilizing slide bars, the stabilizing slide bars are elastically sleeved in the pipeline moving direction of the titanium welded pipe and are provided with a return spring, and one side of the return spring is in contact with the follower moving seat.

[0010] Preferably, a piston groove is provided in the control seat, and the control piston plate is vertically inserted in the piston groove. One side of the two U-shaped control tubes respectively moves horizontally through the two sides of the control seats that are away from each other and are inserted in the piston groove. The side of the U-shaped control tube placed in the piston groove is connected to the center of one side of the control piston plate. A centralized cavity groove is provided in the control piston plate, and the U-shaped control tube is connected to the centralized cavity groove.

[0011] Preferably, a plurality of pull-back boxes and connecting rings are respectively provided in a circular array on both sides of the control piston plate. The plurality of pull-back boxes and the connecting rings are arranged opposite to each other. The connecting rings and the concentrated cavity groove are provided with a sealing groove. A valve stem is movably inserted in the center of the sealing groove. One side of the valve stem is inserted into the pull-back box and is provided with an anti-slip block. A pull-back spring is sleeved on one side of the valve stem placed in the pull-back box.

[0012] Preferably, the valve stem passes through one side of the connecting ring and is provided with a one-way blocking block, which is a conical structure, and a negative pressure suction pipe joint is connected to the upper end of the piston groove close to the one-way blocking block and away from the U-shaped control tube.

[0013] Preferably, a synchronization box is horizontally provided on the side of the U-shaped control tube away from the control piston plate, two guide arms pass through the movable guide groove and are fixedly connected to the synchronization box on one side respectively, and a mounting section is vertically provided on the end of the guide arm that passes through the movable guide groove and away from the synchronization box, the lower ends of the two assembly boxes are respectively sleeved on the mounting sections of the two guide arms, and the cross-sections of the guide arms and the assembly boxes are both square structures.

[0014] Preferably, the combined arc block is arranged on one side of the assembly box, and there is a certain gap between the two guide arms. When the two combined arc blocks are fixedly connected to the two guide arms through the assembly box, there is a moving gap between the two combined arc blocks. The gap between the two combined arc blocks is greater than the thickness of the cutting knife, and the center of the gap between the cutting knife and the two combined arc blocks is in the same vertical plane.

[0015] Preferably, an assembly bolt is rotatably inserted in the assembly box through a constraint ring, a first air groove is opened in the synchronization box, and a second air groove is opened in each guide arm. One side of the first air groove is connected to the U-type control tube, and the two second air grooves are respectively connected to the two first air grooves. A fixed screw groove is opened in the center of the installation section of the guide arm that is inserted into the assembly box, and the lower end of the assembly bolt is threadedly inserted into the fixed screw groove of the guide arm.

[0016] Preferably, a working groove is provided in the combined arc block, a transfer groove is provided in the assembly box, a connecting hole is provided on one side of the working groove together with the transfer groove, and a transfer groove is provided in the assembly bolt to connect the second air groove and the transfer groove.

[0017] Preferably, the cross-section of the application groove is an L-shaped structure, and a horizontal section of the application groove passes through the inner arc surface of the combined arc block to form a plurality of embedding holes, and a plurality of retaining suction cups are respectively inserted into the plurality of embedding holes and connected to the application groove. Filling grooves are provided on opposite sides of the two combined arc blocks of the control seat, and a plurality of smoke suction holes are provided in the vertical section of the application groove that is connected to the filling groove. Filter cotton strips are inserted in the filling grooves, and the number of smoke suction holes is less than the number of retaining suction cups.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] During the cutting operation in the continuous production process of titanium welded pipes, when the titanium welded pipes move into the cutting equipment or cutting machine, fixed-length detection is performed through the existing sensor module. When fixed-length cutting is required, the follow-up moving seat moves along with the titanium welded pipe through the cooperation of the control component and the contact holding component. The titanium welded pipe is stably cut during the movement, and with the action of a number of smoke suction holes and holding suction cups, the smoke in the cutting process can be processed and the titanium welded pipe with thinner wall can be cut while maintaining its shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 For the present invention Figure 1 Schematic diagram of part A;

[0022] Figure 3 This is a schematic diagram of the installation structure of the follow-up mobile seat of the present invention;

[0023] Figure 4 For the present invention Figure 3 Schematic diagram of part B;

[0024] Figure 5 For the present invention Figure 4 Schematic diagram of the C part;

[0025] Figure 6 This is a schematic diagram of the structure of the following mobile seat of the present invention;

[0026] Figure 7 This is a schematic diagram of the local side cutting structure of the following moving seat of the present invention;

[0027] Figure 8 For the present invention Figure 7 Schematic diagram of the D part;

[0028] Fig. 9 For the present invention Figure 8 Schematic diagram of part E;

[0029] Fig.10 It is a schematic diagram of the installation side cut of the combined arc block of the present invention;

[0030] Fig.11 For the present invention Fig.10 Schematic diagram of the F part;

[0031] Fig.12 This is an exploded view of the connection between the combined arc block and the follower moving seat of the present invention.

[0032] In the figure: pipe cutting table 1, follow-up moving seat 2, stabilizing slide bar 3, return spring 4, cutting console 5, cutting knife 6, control seat 7, piston groove 8, control piston plate 9, concentrated cavity groove 10, pull-back box 11, connecting ring 12, valve stem 13, one-way blocking block 14, pull-back spring 15, U-type control tube 16, synchronization box 17, guide arm 18, assembly box 19, combined arc block 20, holding suction cup 22, first air groove 23, second air groove 24, transfer groove 25, assembly bolt 26, adapter groove 27, connecting hole 28, filling groove 29, smoke suction hole 30, filter cotton strip 31, negative pressure suction pipe joint 32, movable guide groove 33, fixed screw groove 34, application groove 35. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Please see attached Figure 1-Figure 12 , this application provides the following technical solutions.

[0035] Embodiment 1: A fixed-length cutting device for titanium welded pipe processing comprises a pipe cutting table 1, the upper end of the pipe cutting table 1 is provided with a follow-up moving seat 2 through a sliding adaptation component, the sliding adaptation component comprises two stabilizing slide bars 3, a cutting control console 5 is provided on the side of the follow-up moving seat 2 away from the stabilizing slide bar 3, a cutting knife 6 is movably mounted on one side of the cutting control console 5, the two stabilizing slide bars 3 are horizontally symmetrically arranged on both sides of the upper end of the pipe cutting table 1, the stabilizing slide bars 3 are consistent with the pipeline moving direction of the titanium welded pipe, the follow-up moving seat 2 is movably sleeved on the two stabilizing slide bars 3, the stabilizing slide bars 3 are elastically sleeved with a return spring 4 facing the pipeline moving direction of the titanium welded pipe, and one side of the return spring 4 is in contact with the follow-up moving seat 2, the follow-up moving seat 2 can drive the cutting control console 5 and the cutting knife 6 to slide adaptively to cope with the cutting of the titanium welded pipe during the pipeline movement process.

[0036] Two control components are set to control whether the follow-up moving seat 2 follows the titanium welded pipe to move synchronously. The two control components are respectively arranged on both sides of the upper end of the follow-up moving seat 2. The control components include a control seat 7, a control piston plate 9 and a U-shaped control tube 16. The control piston plate 9 is movably inserted in the control seat 7. The U-shaped control tube 16 is movably inserted in one side of the control seat 7. Two movable guide grooves 33 are symmetrically opened at the lower end of the control seat 7. The movable guide grooves 33 are horizontally movably inserted with guide arms 18. The control seat 7 is provided with a piston groove 8. The piston plate 9 is vertically inserted into the piston groove 8, and one side of the two U-shaped control tubes 16 is horizontally movable and penetrates the side of the two control seats 7 that are far away from each other and is inserted into the piston groove 8. The side of the U-shaped control tube 16 placed in the piston groove 8 is connected to the center of one side of the control piston plate 9. A centralized cavity groove 10 is provided in the control piston plate 9, and the U-shaped control tube 16 is connected to the centralized cavity groove 10. When the negative pressure suction pipe joint 32 is used in conjunction with the negative pressure suction equipment, the U-shaped control tube 16 can be controlled by the control piston plate 9 to slide horizontally;

[0037] A plurality of pull-back boxes 11 and connecting rings 12 are arranged in a circumferential array on both sides of the control piston plate 9. The plurality of pull-back boxes 11 and the connecting rings 12 are arranged opposite to each other. The connecting rings 12 and the concentrated cavity groove 10 are provided with a blocking groove. A valve stem 13 is movably inserted in the center of the blocking groove. One side of the valve stem 13 is inserted into the pull-back box 11 and is provided with an anti-dropping block. A pull-back spring 15 is sleeved on one side of the valve stem 13 placed in the pull-back box 11. The valve stem 13 passes through one side of the connecting ring 12 and is provided with a one-way blocking block 1 4. The one-way blocking block 14 is a conical structure. The upper end of the piston groove 8 close to the one-way blocking block 14 and away from the U-type control tube 16 is connected with a negative pressure suction pipe joint 32. When the control piston plate 9 cannot move, the negative pressure suction pipe joint 32 continues to perform negative pressure suction. At this time, the one-way blocking block 14 can pull the valve stem 13 to squeeze the pull-back spring 15, so that the negative pressure force acts on the concentrated cavity groove 10 and the U-type control tube 16 through a plurality of connecting rings 12, thereby completing the activity control of the U-type control tube 16.

[0038] A contact holding assembly is provided to support and hold the posture of the titanium welded pipe passing through. The contact holding assembly is provided between the two control seats 7. The contact holding assembly includes four assembly boxes 19 and four combined arc blocks 20. One side of the four assembly boxes 19 is respectively connected to four guide arms 18. The four combined arc blocks 20 are combined into a ring structure in pairs, and the inner arc surfaces of the combined arc blocks 20 are symmetrically provided with a plurality of holding suction cups 22. A synchronization box 17 is horizontally provided on the side of the U-shaped control tube 16 away from the control piston plate 9. One side of the two guide arms 18 passing through the movable guide groove 33 is respectively fixedly connected to the synchronization box 17. A mounting section is vertically provided at one end of the support arm 18 that passes through the movable guide groove 33 and is away from the synchronization box 17. The lower ends of the two assembly boxes 19 are respectively sleeved with the mounting sections of the two guide support arms 18, and the cross-sections of the guide support arms 18 and the assembly box 19 are both square structures. When the U-shaped control tube 16 moves horizontally, the synchronization box 17 pushes the two guide support arms 18 horizontally, so that the four combined arc blocks 20 on both sides can be controlled to contact the passing titanium welded pipe. The virtual axis of the inner arc surface of the combined arc block 20 is the same as the axis of the passing titanium welded pipe, so that the four combined arc blocks 20 can symmetrically clamp the titanium welded pipe on both sides.

[0039] Then, under the action of the moving titanium welded pipe, the combined arc block 20 and the following moving seat 2 are controlled to slide along the stable slide bar 3. When the following moving seat 2 starts to move, the cutting console 5 drives the cutting knife 6 to descend through the motor to perform mobile cutting on the titanium welded pipe.

[0040] The combined arc block 20 is arranged on one side of the assembly box 19, and there is a certain gap between the two guide arms 18. When the two combined arc blocks 20 are fixedly connected to the two guide arms 18 through the assembly box 19, there is a moving gap between the two combined arc blocks 20. The gap between the two combined arc blocks 20 is greater than the thickness of the cutting knife 6, and the centers of the gaps between the cutting knife 6 and the two combined arc blocks 20 are in the same vertical plane. When the cutting knife 6 cuts the titanium welded pipe, the two cutting knives 6 clamp and position the two sides of the cutting position without affecting the descending cutting operation of the cutting knife 6.

[0041] An assembly bolt 26 is rotatably inserted in the assembly box 19 through a constraint ring, a first air groove 23 is provided in the synchronization box 17, and a second air groove 24 is provided in each of the guide arms 18. One side of the first air groove 23 is connected to the U-type control tube 16, and the two second air grooves 24 are respectively connected to the two first air grooves 23. A fixed screw groove 34 is provided at the center of the installation section where the guide arm 18 is inserted into the assembly box 19, and the lower end of the assembly bolt 26 is threadedly inserted into the fixed screw groove 34 of the guide arm 18. An application groove 35 is provided in the combined arc block 20, and a transfer groove 25 is provided in the assembly box 19. A connecting hole 28 is provided on one side of the groove 35 together with the transfer groove 25, and a transfer groove 27 is provided in the assembly bolt 26 connecting the second air groove 24 and the transfer groove 25. When the combined arc block 20 is connected to the guide arm 18, the assembly bolt 26 in the assembly box 19 is threadedly connected to the guide arm 18 for quick and stable connection, which is simple and convenient to operate. At the same time, the assembly bolt 26 with the transfer groove 27 can connect the application groove 35 in the combined arc block 20 with the U-type control tube 16, so that the negative pressure suction force of the U-type control tube 16 under the action of the negative pressure suction pipe joint 32 acts on the application groove 35.

[0042] The cross-section of the working groove 35 is an L-shaped structure. The horizontal section of the working groove 35 passes through the inner arc surface of the combined arc block 20 and is provided with a plurality of embedding holes. A plurality of retaining suction cups 22 are respectively inserted into the plurality of embedding holes and connected to the working groove 35. When the inner arc surface of the combined arc block 20 contacts the surface of the titanium welded pipe, the plurality of retaining suction cups 22 are adsorbed on the surface of the titanium welded pipe through the negative pressure in the working groove 35, so as to adsorb and support the stress deformation of the titanium welded pipe during the cutting process, thereby improving the cutting quality.

[0043] In this embodiment: when the length sensing module detects that the length of the moving titanium welded pipe reaches the cutting standard, the negative pressure suction pipe joint 32 responds quickly through the negative pressure suction device, and the negative pressure suction control control piston plate 9 and the U-type control tube 16 move toward the position of the titanium welded pipe. At this time, the four combined arc blocks 20 clamp the titanium welded pipe. Only under the action of the moving titanium welded pipe, the combined arc block 20 controls the follow-up moving seat 2 to slide along the stable slide bar 3. When the follow-up moving seat 2 starts to move, the cutting console 5 drives the cutting knife 6 to descend through the motor to move and cut the titanium welded pipe. During this period, although the combined arc block 20 clamps and positions the two sides of the cutting position of the titanium welded pipe, when the negative pressure suction pipe joint 32 continues to perform negative pressure suction, the one-way blocking block 14 can pull the valve stem 1 3 squeezes the pull-back spring 15, the central cavity 10 is connected with the negative pressure suction pipe joint 32 through the connecting ring 12, and the negative pressure suction pipe joint 32 generates negative pressure suction, through the central cavity 10, the U-shaped control tube 16, the first gas groove 23, the second gas groove 24, the adapter groove 27 and the connecting hole 28, the groove 35 is applied under the action, at this time, a plurality of holding suction cups 22 are disturbed by the negative pressure, and the holding suction cups 22 are used to absorb and restrain the tube wall of the titanium welded tube to avoid deformation of the titanium welded tube during the cutting process, and the elastic structure of the holding suction cups 22 can avoid damage to the tube body when the combined arc block 20 is clamped with the titanium welded tube. In addition, when it is necessary to cut a titanium welded tube with a larger diameter, it is only necessary to replace the combined arc block 20 of the corresponding size, and keep the virtual axis of the combined arc block 20 coaxial with the pipeline of the titanium welded tube.

[0044] Embodiment 2: On the basis of embodiment 1, filling grooves 29 are provided on opposite sides of the two combined arc blocks 20 of the control seat 7, and a plurality of smoke suction holes 30 are provided in the vertical section of the working groove 35 connected to the filling groove 29. Filter cotton strips 31 are inserted in the filling grooves 29, and the number of smoke suction holes 30 is less than the number of retaining suction cups 22. When negative pressure is generated in the working groove 35, smoke suction holes 30 are provided on the side of the combined arc block 20 close to the cutting knife 6. The adsorption of a part of the cutting smoke under the action of the negative pressure in the working groove 35 can be split and concentrated for subsequent processing. The smoke generated by the cutting will not cause excessive pollution to the internal slot holes after being filtered by the filter cotton strips 31, thereby improving the quality of the cutting working environment.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cutting device for titanium welded pipe processing, characterized in that: include: A pipe cutting table (1), wherein the upper end of the pipe cutting table (1) is provided with a follow-up movable seat (2) via a sliding adaptation component, the sliding adaptation component comprises two stabilizing slide bars (3), a cutting control console (5) is provided on the side of the follow-up movable seat (2) away from the stabilizing slide bars (3), and a cutting knife (6) is movably mounted on one side of the cutting control console (5); Two control assemblies, the two control assemblies are respectively arranged on both sides of the upper end of the follower movable seat (2), the control assemblies include a control seat (7), a control piston plate (9) and a U-shaped control tube (16), the control piston plate (9) is movably inserted in the control seat (7), the U-shaped control tube (16) is movably inserted in one side of the control seat (7), the lower end of the control seat (7) is symmetrically provided with two movable guide grooves (33), and the movable guide grooves (33) are horizontally movably inserted with guide arms (18); A contact holding assembly is provided between two control seats (7), and comprises four assembly boxes (19) and four combined arc blocks (20). One side of the four assembly boxes (19) is respectively connected to four guide arms (18), and the four combined arc blocks (20) are combined in pairs to form an annular structure, and the inner arc surfaces of the combined arc blocks (20) are symmetrically provided with a plurality of holding suction cups (22).

2. The titanium welded pipe cutting device according to claim 1, characterized in that: The two stabilizing slide bars (3) are horizontally symmetrically arranged on both sides of the upper end of the pipe cutting table (1), the stabilizing slide bars (3) are consistent with the pipeline moving direction of the titanium welded pipe, the follower moving seat (2) is movably sleeved on the two stabilizing slide bars (3), the stabilizing slide bars (3) are elastically sleeved in the pipeline moving direction of the titanium welded pipe and are provided with a return spring (4), and one side of the return spring (4) is in contact with the follower moving seat (2).

3. The cut-to-length device for titanium welded pipe processing according to claim 2, characterized in that: The control seat (7) is provided with a piston groove (8), the control piston plate (9) is vertically inserted in the piston groove (8), one side of two U-shaped control tubes (16) respectively moves horizontally through the two sides of the control seats (7) that are away from each other and is inserted in the piston groove (8), the side of the U-shaped control tube (16) placed in the piston groove (8) is connected to the center of one side of the control piston plate (9), a central cavity groove (10) is provided in the control piston plate (9), and the U-shaped control tube (16) is connected to the central cavity groove (10).

4. The titanium welded pipe cutting device according to claim 3, characterized in that: A plurality of pull-back boxes (11) and connecting rings (12) are arranged in a circular array on both sides of the control piston plate (9). The plurality of pull-back boxes (11) and the connecting rings (12) are arranged opposite to each other. The connecting rings (12) and the concentrated cavity groove (10) are provided with a sealing groove. A valve stem (13) is movably inserted in the center of the sealing groove. One side of the valve stem (13) is inserted into the pull-back box (11) and is provided with an anti-slip block. One side of the valve stem (13) placed in the pull-back box (11) is sleeved with a pull-back spring (15).

5. The cut-to-length device for titanium welded pipe processing according to claim 4, characterized in that: The valve stem (13) passes through one side of the connecting ring (12) and is provided with a one-way blocking block (14). The one-way blocking block (14) is a conical structure. The upper end of the piston groove (8) close to the one-way blocking block (14) and away from the U-shaped control tube (16) is connected to a negative pressure suction pipe joint (32).

6. The titanium welded pipe cutting device according to claim 5, characterized in that: A synchronization box (17) is horizontally arranged on one side of the U-shaped control tube (16) away from the control piston plate (9); one side of two guide arms (18) passing through the movable guide groove (33) is respectively fixedly connected to the synchronization box (17); an installation section is vertically arranged on one end of the guide arm (18) passing through the movable guide groove (33) and away from the synchronization box (17); the lower ends of the two assembly boxes (19) are respectively sleeved on the installation sections of the two guide arms (18); and the cross-sections of the guide arms (18) and the assembly boxes (19) are both square structures.

7. The cut-to-length device for titanium welded pipe processing according to claim 6, characterized in that: The combined arc block (20) is arranged on one side of the assembly box (19), and there is a certain gap between the two guide arms (18). When the two combined arc blocks (20) are fixedly connected to the two guide arms (18) through the assembly box (19), there is a moving gap between the two combined arc blocks (20), the gap between the two combined arc blocks (20) is greater than the thickness of the cutting blade (6), and the centers of the gaps between the cutting blade (6) and the two combined arc blocks (20) are located in the same vertical plane.

8. The cut-to-length device for titanium welded pipe processing according to claim 7, characterized in that: An assembly bolt (26) is rotatably inserted in the assembly box (19) through a restraining ring, a first air groove (23) is provided in the synchronization box (17), and second air grooves (24) are provided in the guide support arms (18). One side of the first air groove (23) is connected to the U-shaped control tube (16), and the two second air grooves (24) are respectively connected to the two first air grooves (23). A fixing screw groove (34) is provided at the center of the installation section of the guide support arm (18) inserted into the assembly box (19), and the lower end of the assembly bolt (26) is inserted into the fixing screw groove (34) of the guide support arm (18) through a thread.

9. The titanium welded pipe cutting device according to claim 8, characterized in that: The combined arc block (20) is provided with an application groove (35), the assembly box (19) is provided with a transfer groove (25), a connecting hole (28) is provided on one side of the application groove (35) and the transfer groove (25), and a transfer groove (27) is provided in the assembly bolt (26) to connect the second air groove (24) and the transfer groove (25).

10. The cut-to-length device for titanium welded pipe processing according to claim 9, characterized in that: The cross section of the application groove (35) is an L-shaped structure. The horizontal section of the application groove (35) penetrates the inner arc surface of the combined arc block (20) and is provided with a plurality of embedding holes. A plurality of retaining suction cups (22) are respectively inserted into the plurality of embedding holes and connected to the application groove (35). The two combined arc blocks (20) of the control seat (7) are provided with filling grooves (29) on opposite sides. A plurality of smoke suction holes (30) are provided in the vertical section of the application groove (35) and are connected to the filling groove (29). Filter cotton strips (31) are inserted into the filling grooves (29), and the number of smoke suction holes (30) is less than the number of retaining suction cups (22).

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