Auxiliary clamping device for special-shaped pipe fitting cutting

Abstract

The invention discloses a special-shaped pipe fitting cutting auxiliary clamping device, and relates to the technical field of pipe fitting cutting clamping, the special-shaped pipe fitting cutting auxiliary clamping device comprises a cutting device, the cutting device comprises a cutting disc and a cutting machine installed on the cutting disc, a cutting groove is formed in the upper surface of the cutting disc, and a clamping assembly is installed on the upper surface of the cutting disc through an adjusting assembly and a lifting assembly. The clamping assembly comprises a fixing sleeve, the inner wall of the fixing sleeve is rotationally connected with a rotating sleeve through a clamping block, a three-dimensional four-way pipe is placed on the inner wall of the rotating sleeve, at least four extending frames are fixedly installed on one side of the rotating sleeve, supporting columns are fixedly connected between the inner walls of the extending frames, and the supporting columns are rotationally connected with abutting blocks through torsional springs. The outer wall of the abutting block abuts against the inner wall of the three-dimensional four-way pipe, linkage of the rotating sleeve, the bevel gear and the arc-shaped gear block is combined, it is ensured that connecting pipes on the two sides of the three-dimensional four-way pipe are perpendicular to the cutting groove during cutting, and the cutting precision is improved.

Description

Technical Field

[0001] The invention relates to the technical field of pipe cutting and clamping, and in particular to an auxiliary clamping device for cutting special-shaped pipes. Background Art

[0002] As a key element in the pipeline system, pipe fittings are responsible for connecting, controlling, branching, changing direction and sealing pipelines to ensure smooth and safe transmission of fluids or gases. Special-shaped pipe fittings, especially three-dimensional four-way pipes, play an indispensable role in water supply and drainage, HVAC, petrochemical and other industries with their unique shape of non-standard circular cross-section. However, the processing and cutting process of such complex-shaped pipe fittings is extremely arduous.

[0003] Traditional pipe cutting and clamping devices are mostly designed for standard pipes such as round or square pipes. Their clamping methods and structures are often unable to effectively adapt to the special needs of special-shaped pipes such as three-dimensional four-way pipes. During the cutting process, due to the multi-directional connected structural characteristics of the three-dimensional four-way pipe, the clamping device is required to firmly fix the pipe and ensure that high precision can be maintained when cutting each connecting pipe to prevent cutting deviation or pipe damage caused by unstable clamping.

[0004] Traditional clamping devices are unable to flexibly cope with the complex cutting requirements of three-dimensional four-way tubes, especially when changing the cutting angle or processing complex shapes. This not only leads to a decrease in cutting accuracy, but also seriously affects processing efficiency and causes unnecessary material waste. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that traditional clamping devices are difficult to flexibly cope with the complex cutting requirements of three-dimensional four-way tubes, especially when changing the cutting angle or processing complex shapes. This not only leads to a decrease in cutting accuracy, but also seriously affects the processing efficiency and causes unnecessary material waste. A solution is proposed.

[0006] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: a special-shaped pipe cutting auxiliary clamping device: comprising a cutting device, the cutting device comprising a cutting disc and a cutting machine installed thereon, the upper surface of the cutting disc is provided with a cutting groove, and further comprising: an adjusting component, a lifting component, and a clamping component installed on the upper surface of the cutting disc;

[0007] The clamping assembly includes a fixed sleeve, the inner wall of the fixed sleeve is rotatably connected to a rotating sleeve through a clamping block, a three-dimensional four-way tube is placed on the inner wall of the rotating sleeve, at least four extension frames are fixedly installed on one side of the rotating sleeve, support columns are fixedly connected between the inner walls of the extension frames, the support columns are rotatably connected to a tightening block through a torsion spring, and the outer wall of the tightening block is in abutment with the inner wall of the three-dimensional four-way tube;

[0008] The adjusting assembly includes a support frame fixedly mounted on the top of the cutting disc, two sliding grooves are provided inside the support frame, and the inner wall of the sliding groove away from the cutting disc is rotatably connected to the first sliding frame, the outer periphery of the first sliding frame is connected to the first pushing rod, the first pushing rod abuts against the cutting disc through a first fixing screw connected with an internal thread, the inner wall of the first sliding frame is connected to the connecting rod through a first connecting sleeve block, the first connecting sleeve block and the connecting rod are connected by a clamping piece, the inner wall of the support frame is fixedly connected to the first extension block, and the inner ring of the first extension block is connected to the first fixing cylinder;

[0009] The first sliding frame is driven to rotate by pushing the first pushing rod, and the first sliding frame drives the connecting rod to rotate through the first connecting sleeve block, so that the connecting rod rotates and drives the fixed sleeve to rotate through the lifting assembly. While the fixed sleeve rotates, the rotating sleeve rotates a certain angle through the rotation of the rotating assembly, so that the connecting pipes on both sides of the three-dimensional four-way pipe are perpendicular to the cutting groove.

[0010] As a further description of the above technical solution:

[0011] The clamping member comprises a clamping block installed on the outer periphery of the connecting rod, and a clamping groove adapted to the clamping block is provided inside the first connecting sleeve block.

[0012] As a further description of the above technical solution:

[0013] The lifting assembly includes a second extension block, a second fixed cylinder and a hinge installed on the inner wall of the support frame. The support frame is slidably connected to the inner wall of the slide groove close to the cutting disk. The outer periphery of the second fixed cylinder is connected to the second push rod. The second push rod abuts against the cutting disk through a second fixing screw connected by an internal thread. The inner wall of the second sliding frame is fixedly connected to the second connecting sleeve block. The second fixed cylinder and the inner wall of the second connecting sleeve block are slidably connected to the lifting member.

[0014] As a further description of the above technical solution:

[0015] The lifting member includes a lifting rod slidably mounted on the second fixed cylinder and the inner wall of the second connecting sleeve block. A spiral groove is arranged on the outer periphery of the lifting rod. The spiral groove is connected to the second connecting sleeve block by an abutment column. The abutment column abuts against the spiral groove. A plug-in groove is arranged on the top of the lifting rod. The plug-in groove is connected to the connecting rod by a plug-in block. A limiting member is connected to the bottom of the lifting rod.

[0016] As a further description of the above technical solution:

[0017] The limiting member comprises a limiting groove opened at the bottom of the lifting rod, the inner wall of the limiting groove is slidably connected with a limiting rod, and the bottom of the limiting rod is connected to the lower surface of the cutting disc through a fixing frame.

[0018] As a further description of the above technical solution:

[0019] The hinged part includes a connecting block installed on the outer periphery of the connecting rod, a moving ring is fixedly connected to the outer periphery of the connecting block, the moving ring is connected to the first fixed cylinder through a first moving groove, the connecting block is slidably connected to the clamping block, a mounting frame is installed on the top of the connecting rod, a welding frame is connected to the top of the connecting block, positioning rods are connected to the inner walls of the mounting frame and the welding frame, the two positioning rods are connected to the fixed sleeve through a connecting plate, and the connecting plate is rotatably connected to the two positioning rods.

[0020] As a further description of the above technical solution:

[0021] The rotating assembly includes an arc-shaped gear block fixedly connected to the top of the cutting disc and close to the support frame, and an extension plate installed on the outer periphery of the fixed sleeve. A gear part is connected to one side of the extension plate, and a plurality of gear teeth are connected to the outer periphery of the rotating sleeve. The gear part and the gear teeth are meshed and connected.

[0022] As a further description of the above technical solution:

[0023] The gear member comprises a mounting column rotatably mounted on one side of the extension plate, the outer periphery of the mounting column is connected with a bevel gear meshing with the arc gear block, and the outer periphery of the mounting column is connected with a connecting gear meshing with a plurality of gear teeth.

[0024] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0025] When cutting a three-dimensional four-way pipe, first ensure that the first sliding frame is accurately aligned with the center of the support frame, and then firmly lock it by rotating the first fixing screw, so that the cutting disc can perform a straight and precise cutting of the I-shaped intermediate pipe;

[0026] For cutting the connecting pipes on both sides of the three-dimensional four-way pipe, the first push rod is operated to drive the first sliding frame to move smoothly in the sliding groove, and the connecting rod is synchronously driven to rotate, so that the pipe to be cut gradually approaches the cutting groove and is ready for cutting. The rotating sleeve is combined with the linkage of the bevel gear and the arc gear block to ensure that the connecting pipes on both sides of the three-dimensional four-way pipe are perpendicular to the cutting groove during cutting, thereby improving the cutting accuracy;

[0027] In response to the needs of bevel cutting, the sliding mechanism of the second push rod and the second sliding frame is adopted, combined with the ingenious design of the spiral groove, to convert the rotation of the abutment column into the linear lifting of the lifting rod, and then adjust the cutting angle through the connecting rod and the hinge to achieve precise bevel cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Shows a schematic diagram of the overall structure according to the present invention;

[0029] Figure 2 It shows a schematic cross-sectional view of the overall structure according to the present invention;

[0030] Figure 3 It is shown that according to the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0031] Figure 4 It shows a schematic structural diagram of a rotating assembly according to the present invention;

[0032] Figure 5 A schematic diagram of the disassembled structure of the clamping assembly according to the present invention is shown;

[0033] Figure 6 It is shown that according to the present invention Figure 5 The enlarged structural diagram at C in the middle;

[0034] Figure 7 A schematic diagram of the structure of the regulating assembly according to the present invention is shown;

[0035] Figure 8 It is shown that according to the present invention Figure 7 The enlarged structural diagram at B in the middle;

[0036] Fig. 9 A schematic diagram of the disassembled structure of the lifting assembly according to the present invention is shown;

[0037] Fig.10 A schematic structural diagram of the lifting assembly according to the present invention from another viewing angle is shown.

[0038] Legend:

[0039] 10. Cutting device; 11. Cutting machine; 12. Cutting disc; 13. Cutting groove;

[0040] 20. Clamping assembly; 21. Fixed sleeve; 22. Rotating sleeve; 23. Extension frame; 24. Support column; 25. Tightening block; 26. Three-dimensional four-way pipe;

[0041] 30. Adjustment assembly; 31. Support frame; 32. Slide slot; 33. First extension block; 34. First fixed cylinder; 341. First movable slot; 35. First sliding frame; 351. First push rod; 352. First fixing screw; 353. First connecting sleeve block; 354. Connecting rod; 355. Block; 356. Slot; 357. Connecting block;

[0042] 40. Lifting assembly; 41. Second extension block; 42. Second fixed cylinder; 43. Second sliding frame; 44. Second push rod; 441. Second fixing screw; 45. Second connecting sleeve; 451. Abutment column; 46. Lifting rod; 461. Spiral groove; 462. Insertion groove; 463. Limiting groove; 47. Fixed frame; 471. Limiting rod; 48. Mounting frame; 481. Moving ring; 482. Connecting block; 483. Welding frame; 484. Positioning rod; 485. Connecting plate;

[0043] 50. Rotating assembly; 51. Arc gear block; 52. Extension plate; 53. Mounting column; 54. Bevel gear; 55. Connecting gear; 56. Gear teeth. DETAILED DESCRIPTION

[0044] 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.

[0045] like Figure 1-Figure 10 As shown, the present invention provides a special-shaped pipe cutting auxiliary clamping device: comprising a cutting device 10, the cutting device 10 comprises a cutting disc 12 and a cutting machine 11 mounted thereon, the upper surface of the cutting disc 12 is provided with a cutting groove 13, and further comprises: a clamping assembly 20 mounted on the upper surface of the cutting disc 12 through an adjusting assembly 30 and a lifting assembly 40;

[0046] like Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the clamping assembly 20 includes a fixed sleeve 21, the inner wall of the fixed sleeve 21 is rotatably connected to a rotating sleeve 22 through a clamping block, a three-dimensional four-way tube 26 is placed on the inner wall of the rotating sleeve 22, at least four extension frames 23 are fixedly installed on one side of the rotating sleeve 22, support columns 24 are fixedly connected between the inner walls of the extension frames 23, and the support columns 24 are rotatably connected to a tightening block 25 through a torsion spring, and the outer wall of the tightening block 25 is in contact with the inner wall of the three-dimensional four-way tube 26 (the opening height of the connecting pipes on both sides of the three-dimensional four-way tube 26 is higher than the other two openings);

[0047] When the three-dimensional cross-tube 26 needs to be installed and firmly clamped, firstly, the three-dimensional cross-tube 26 to be installed is gently inserted into the pre-installed rotating sleeve 22;

[0048] Next, the abutting block 25 is manually moved to make it perform a circular motion along the outer circumference of the support column 24. During this process, the abutting block 25 will compress the internal torsion spring to store elastic potential energy. The torsion spring is an elastic element, and its design ensures that it can deform when subjected to external force, and quickly return to its original shape after the external force is removed, thereby generating a reverse elastic force.

[0049] When the three-dimensional four-way tube 26 is completely and accurately inserted into the predetermined position in the rotating sleeve 22, the operator releases the movement of the abutting block 25. At this time, the previously compressed torsion spring begins to release its stored elastic potential energy, and pushes the abutting block 25 to move toward the three-dimensional four-way tube 26 through the rebound effect. Driven by the torsion spring, the abutting block 25 is tightly pressed against the inner wall of the three-dimensional four-way tube 26, thereby achieving a stable and uniform clamping of the three-dimensional four-way tube 26.

[0050] This clamping method is not only easy and quick to operate, but also can ensure that the three-dimensional four-way tube 26 will not be displaced or shaken during the cutting process, greatly improving the accuracy and efficiency of cutting. At the same time, the rebound force of the torsion spring and the precise design of the clamping block 25 also ensure the uniform distribution of the clamping force, avoiding the problem of pipe damage caused by excessive local pressure.

[0051] like Figure 1 , Figure 4 , Figure 5 , Figure 7 , Figure 8 As shown, the adjustment component 30 includes a support frame 31 fixedly installed on the top of the cutting disk 12, and two slide grooves 32 are provided inside the support frame 31. The inner wall of the slide groove 32 away from the cutting disk 12 is rotatably connected with a first sliding frame 35, and the outer periphery of the first sliding frame 35 is connected with a first push rod 351, and the first push rod 351 abuts against the cutting disk 12 through a first fixing screw 352 connected with an internal thread, and the inner wall of the first sliding frame 35 is connected with a connecting rod 354 through a first connecting sleeve block 353, and the first connecting sleeve block 353 and the connecting rod 354 are connected by a clamping piece, and the clamping piece includes a clamping block 355 installed on the outer periphery of the connecting rod 354, and the first connecting sleeve block 353 is provided with a clamping groove 356 adapted to the clamping block 355, and the inner wall of the support frame 31 is fixedly connected with a first extension block 33, and the inner ring of the first extension block 33 is connected with the first fixed cylinder 34;

[0052] When cutting the three-dimensional cross-tube 26, the first sliding frame 35 that can be adjusted and flexibly positioned can accurately meet the cutting requirements of different parts;

[0053] First, when it is necessary to cut the straight-line middle tube of the three-dimensional four-way tube 26, the operator needs to adjust the first sliding frame 35 to the center line position of the support frame 31. This step ensures that the cutting disc 12 can be directly aligned with the middle tube to achieve accurate straight-line cutting. Then, by screwing the first fixing screw 352, it gradually comes into close contact with the bottom surface of the cutting disc 12 and applies sufficient pressure, thereby achieving a stable positioning of the first sliding frame 35. At this time, the cutting machine 11 can be driven by the driving system to efficiently and accurately cut the straight-line middle tube of the three-dimensional four-way tube 26.

[0054] When the cutting task turns to the connecting pipes on both sides of the three-dimensional four-way tube 26, the flexibility of the device is fully demonstrated. The operator only needs to push the first push rod 351 to drive the first sliding frame 35 to move smoothly along the trajectory of the slide groove 32. In this process, the first connecting sleeve block 353 acts as a connecting piece. With the synchronous rotation of the first sliding frame 35, through the close cooperation between its built-in card slot 356 and the card block 355, it guides and drives the connecting rod 354 to perform corresponding rotational movement. The rotation of the connecting rod 354 not only adjusts its position in space, but also indirectly affects the relative position relationship between the connecting pipes to be cut on both sides of the three-dimensional four-way tube 26 and the cutting groove 13. With the continuous rotation of the connecting rod 354, the connecting pipes on both sides are gradually guided to a position closer to the cutting groove 13, which is fully prepared for the subsequent cutting operation.

[0055] like Figure 1 , Figure 4 As shown, the rotating assembly 50 includes an arc-shaped gear block 51 fixedly connected to the top of the cutting disc 12 and close to the support frame 31, and an extension plate 52 installed on the outer periphery of the fixed sleeve 21, one side of the extension plate 52 is connected to a gear member, the outer periphery of the rotating sleeve 22 is connected to a plurality of gear teeth 56, the gear member and the gear teeth 56 are meshed and connected, the gear member includes a mounting column 53 rotatably mounted on one side of the extension plate 52, the outer periphery of the mounting column 53 is connected to a bevel gear 54 meshed with the arc-shaped gear block 51, and the outer periphery of the mounting column 53 is connected to a connecting gear 55 meshed with the plurality of gear teeth 56;

[0056] When it is necessary to cut the connecting pipes on both sides of the three-dimensional cross-tube 26, as the three-dimensional cross-tube 26 is firmly clamped in the rotating sleeve 22 and starts to rotate, as the rotating sleeve 22 and the fixed sleeve 21 rotate, the bevel gear 54 contacts the arc gear block 51. At this moment of contact, the bevel gear 54 is driven by the profile of the arc gear block 51 and starts to drive the mounting column 53 to rotate together. As the mounting column 53 rotates, it drives the connecting gear 55 to rotate together, and the outer edge of the connecting gear 55 meshes with a plurality of gear teeth 56 carefully arranged on the outer periphery of the rotating sleeve 22.

[0057] As the connecting gear 55 rotates, the gear teeth 56 are driven, thereby driving the entire rotating sleeve 22 to perform a smooth rotational motion under the constraint of the fixed sleeve 21. This rotational motion is precisely controlled to adjust the orientation of the three-dimensional cross-tube 26 so that the connecting pipes on both sides thereof can be adjusted according to a predetermined angle.

[0058] When the first push rod 351 pushes the first sliding frame 35 to move to a predetermined position along the predetermined track of the slide groove 32, this step ensures the stability of the three-dimensional cross-tube 26 during the rotation process and provides a basis for the alignment of the connecting tubes on both sides thereof with the cutting groove 13;

[0059] When the first sliding frame 35 is in place, the three-dimensional cross-tube 26 is continuously rotated by the rotating sleeve 22, and the connecting pipes on both sides thereof are gradually adjusted to a state perpendicular to the cutting groove 13, which is the best condition for the cutting operation.

[0060] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 As shown, the lifting assembly 40 includes a second extension block 41, a second fixed cylinder 42 and a hinge installed on the inner wall of the support frame 31. The inner wall of the slide groove 32 of the support frame 31 close to the cutting disk 12 is slidably connected with a second sliding frame 43, the outer periphery of the second fixed cylinder 42 is connected with a second push rod 44, and the second push rod 44 abuts against the cutting disk 12 through a second fixing screw 441 connected with an internal thread, the inner wall of the second sliding frame 43 is fixedly connected with a second connecting sleeve 45, and the inner walls of the second fixed cylinder 42 and the second connecting sleeve 45 are slidably connected with a lifting member, and the lifting member includes a lifting member slidably installed on the second fixed cylinder 42 and the second connecting sleeve The lifting rod 46 on the inner wall of the sleeve block 45 has a spiral groove 461 arranged on its outer periphery, the spiral groove 461 is connected to the second connecting sleeve block 45 via an abutting column 451, the abutting column 451 abuts in the spiral groove 461, the top of the lifting rod 46 is provided with a plug-in groove 462, the plug-in groove 462 is connected to the connecting rod 354 via a plug-in block 357, the bottom of the lifting rod 46 is connected with a limiting member, the limiting member includes a limiting groove 463 opened at the bottom of the lifting rod 46, the inner wall of the limiting groove 463 is slidably connected with a limiting rod 471, the bottom of the limiting rod 471 is connected to the lower surface of the cutting disc 12 via a fixing frame 47;

[0061] In response to more complex cutting requirements, when the cutting task requires bevel cutting of a specific part of the three-dimensional cross-tube 26, the operator first needs to operate the second push rod 44 to start the adjustment. As the second push rod 44 pushes, the second sliding frame 43 slides smoothly along the guide of the slide groove 32 to the desired position. In this process, the second sliding frame 43 drives the second connecting sleeve 45 closely connected thereto to rotate together.

[0062] The rotation of the second connecting sleeve 45 is a key step in the bevel cutting adjustment. As it rotates, the abutment column 451 installed inside or outside the second connecting sleeve 45 begins to move along a specific trajectory in the spiral groove 461. The spiral groove 461 is exquisitely designed. It uses the characteristics of the spiral line to convert the rotational motion into a linear motion, thereby driving the lifting rod 46 to perform a stable linear lifting under the constraint of the limiting rod 471. The existence of the limiting rod 471 ensures the stability and directionality of the lifting rod 46 during the lifting process, and prevents any unnecessary deviation or shaking.

[0063] As the lifting rod 46 moves up and down, the lifting motion is transmitted to the connecting rod 354. The lifting motion of the connecting rod 354 directly affects the cutting end position of the three-dimensional cross-tube 26. Through the clever design of the hinge, the lifting of the connecting rod 354 can drive the cutting end of the three-dimensional cross-tube 26 to perform corresponding lifting and adjustment, thereby achieving precise control of the cutting angle.

[0064] Finally, when the cutting end of the three-dimensional cross-tube 26 is adjusted to the desired bevel position, the cutting machine 11 can perform precise bevel cutting on the pipe under the control of the driving system.

[0065] like Figure 7 , Figure 8 As shown, the hinged member includes a connecting block 482 installed on the periphery of the connecting rod 354, a movable ring 481 is fixedly connected to the periphery of the connecting block 482, the movable ring 481 is connected to the first fixed cylinder 34 through the first movable groove 341, the connecting block 482 is slidably connected to the clamping block 355, a mounting frame 48 is installed on the top of the connecting rod 354, a welding frame 483 is connected to the top of the connecting block 482, and positioning rods 484 are connected to the inner walls of the mounting frame 48 and the welding frame 483, the two positioning rods 484 are connected to the fixed sleeve 21 through a connecting plate 485, and the connecting plate 485 is rotatably connected to the two positioning rods 484;

[0066] As the connecting rod 354 rises, the block 355 is driven to slide inside the connecting block 482, while the connecting block 482 does not move under the restriction of the moving ring 481. As the connecting rod 354 rises, the mounting frame 48 is driven to rise together, so that the connecting plate 485 rotates with the positioning rod 484 connected to the welding frame 483 as the center of the circle when pushed by the mounting frame 48. Therefore, under the push of the connecting plate 485, the fixed sleeve 21 is tilted, which facilitates the cutting of the upper part of the three-dimensional cross-tube 26.

[0067] As the connecting rod 354 descends, the block 355 is similarly driven to slide inside the connecting block 482. As the connecting rod 354 descends, the connecting plate 485 connected to the mounting frame 48 is pulled to rotate around the positioning rod 484 connected to the welding frame 483, so that the fixed sleeve 21 is tilted, which facilitates the cutting of the lower part of the three-dimensional cross-tube 26.

[0068] When the connecting rod 354 rotates under the drive of the first sliding frame 35, the block 355 is embedded in the connecting block 482, thereby driving the connecting block 482 to rotate together, and the moving ring 481 connected to the connecting block 482 rotates in the first moving groove 341, so that the hinge moves synchronously with the connecting rod 354;

[0069] No matter to which angle the three-dimensional cross-tube 26 is rotated by the rotating sleeve 22 , the cutting angle of the three-dimensional cross-tube 26 can be adjusted by moving the lifting assembly 40 .

[0070] Working principle: In the process of processing the three-dimensional four-way tube 26, firstly, the three-dimensional four-way tube 26 is accurately inserted into the rotating sleeve 22, and then the abutting block 25 is manually turned to make it rotate smoothly along the outer circumference of the support column 24. In this process, the torsion spring is squeezed and the elastic potential energy is stored. When the three-dimensional four-way tube 26 is fully inserted into place, the abutting block 25 is released. At this time, the torsion spring rebounds quickly, driving the abutting block 25 to apply abutting pressure to the pipe fitting, thereby achieving a stable clamping of the three-dimensional four-way tube 26;

[0071] When the middle tube of the three-dimensional cross-tube 26 needs to be cut, first ensure that the first sliding frame 35 is located on the center line of the support frame 31, and then rotate the first fixing screw 352 to make it closely contact with the cutting disc 12, thereby fixing the first sliding frame 35. At this time, the cutting disc 12 can accurately cut the middle tube in a straight line.

[0072] If the connecting pipes on both sides of the three-dimensional cross-tube 26 need to be cut, the first push rod 351 is operated to push the first sliding frame 35 to move smoothly in the sliding groove 32. During this process, the first connecting sleeve 353 rotates synchronously with the first sliding frame 35 and drives the connecting rod 354 to rotate through the clamping groove 356. As the connecting rod 354 rotates, the connecting pipes to be cut on both sides gradually approach the cutting groove 13, preparing for subsequent cutting.

[0073] During the continuous rotation of the three-dimensional cross-tube 26, when the bevel gear 54 contacts the arc gear block 51, the bevel gear 54 starts to rotate, and this rotational motion is transmitted to the connecting gear 55 through the mounting column 53, thereby driving the rotating sleeve 22 to rotate in the fixed sleeve 21. As the first push rod 351 drives the first sliding frame 35 to move into place, the three-dimensional cross-tube 26 is driven by the rotating sleeve 22, and the openings of the connecting pipes on both sides thereof gradually become perpendicular to the cutting groove 13, which is convenient for accurate cutting operation;

[0074] In order to meet the requirement of bevel cutting of the three-dimensional cross-tube 26, the second push rod 44 can be pushed to make the second sliding frame 43 slide in the sliding groove 32. This action simultaneously drives the second connecting sleeve 45 to rotate, thereby driving the abutment column 451 to move in the spiral groove 461. The design of the spiral groove 461 converts the rotational motion of the abutment column 451 into the linear lifting motion of the lifting rod 46, and the motion remains stable under the constraint of the limiting rod 471.

[0075] The lifting and lowering of the lifting rod 46 directly pushes the connecting rod 354 to move synchronously, and through the connecting action of the hinge, the cutting end of the three-dimensional four-way pipe 26 is driven to be lifted and adjusted. This process realizes the precise control of the cutting angle and provides the possibility for bevel cutting.

[0076] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cutting auxiliary clamping device for special-shaped pipe fittings, comprising a cutting device (10), wherein the cutting device (10) comprises a cutting disc (12) and a cutting machine (11) mounted thereon, wherein a cutting groove (13) is provided on the upper surface of the cutting disc (12), wherein: Also includes: A through adjustment assembly (30), a lifting assembly (40), and a clamping assembly (20) mounted on the upper surface of the cutting disc (12); The clamping assembly (20) comprises a fixed sleeve (21), the inner wall of the fixed sleeve (21) is rotatably connected to a rotating sleeve (22) via a clamping block, a three-dimensional four-way tube (26) is placed on the inner wall of the rotating sleeve (22), at least four extension frames (23) are fixedly installed on one side of the rotating sleeve (22), support columns (24) are fixedly connected between the inner walls of the extension frames (23), the support columns (24) are rotatably connected to a clamping block (25) via a torsion spring, and the outer wall of the clamping block (25) is in contact with the inner wall of the three-dimensional four-way tube (26); The adjustment assembly (30) comprises a support frame (31) fixedly mounted on the top of the cutting disc (12), two slide grooves (32) are provided inside the support frame (31), the inner wall of the slide groove (32) away from the cutting disc (12) is rotatably connected with a first sliding frame (35), the outer periphery of the first sliding frame (35) is connected with a first push rod (351), the first push rod (351) is abutted against the cutting disc (12) through a first fixing screw (352) connected with an internal thread, the inner wall of the first sliding frame (35) is connected with a connecting rod (354) through a first connecting sleeve (353), the first connecting sleeve (353) and the connecting rod (354) are connected by a clamping piece, the inner wall of the support frame (31) is fixedly connected with a first extension block (33), and the inner ring of the first extension block (33) is connected with a first fixing cylinder (34); The first sliding frame (35) is driven to rotate by pushing the first pushing rod (351), and the first sliding frame (35) drives the connecting rod (354) to rotate through the first connecting sleeve block (353), so that the connecting rod (354) rotates and drives the fixed sleeve (21) to rotate through the lifting assembly (40). When the fixed sleeve (21) rotates, the rotating sleeve (22) rotates at a certain angle through the rotation of the rotating assembly (50), so that the connecting pipes on both sides of the three-dimensional four-way pipe (26) are perpendicular to the cutting groove (13).

2. The auxiliary clamping device for cutting special-shaped pipe fittings according to claim 1, characterized in that: The clamping member comprises a clamping block (355) mounted on the outer periphery of the connecting rod (354), and a clamping groove (356) adapted to the clamping block (355) is provided inside the first connecting sleeve block (353).

3. The auxiliary clamping device for cutting special-shaped pipe fittings according to claim 1, characterized in that: The lifting assembly (40) comprises a second extension block (41), a second fixed cylinder (42) and a hinged member installed on the inner wall of the support frame (31); the inner wall of the slide groove (32) of the support frame (31) close to the cutting disc (12) is slidably connected to a second sliding frame (43); the outer periphery of the second fixed cylinder (42) is connected to a second push rod (44); the second push rod (44) is in contact with the cutting disc (12) via a second fixing screw (441) connected by an internal thread; the inner wall of the second sliding frame (43) is fixedly connected to a second connecting sleeve block (45); the inner walls of the second fixed cylinder (42) and the second connecting sleeve block (45) are slidably connected to the lifting member.

4. The auxiliary clamping device for cutting special-shaped pipes according to claim 3, characterized in that: The lifting member comprises a lifting rod (46) slidably mounted on the inner wall of the second fixed cylinder (42) and the second connecting sleeve (45); a spiral groove (461) is arranged on the outer periphery of the lifting rod (46); the spiral groove (461) and the second connecting sleeve (45) are connected via an abutting column (451); the abutting column (451) abuts against the spiral groove (461); a plug-in groove (462) is arranged on the top of the lifting rod (46); the plug-in groove (462) and the connecting rod (354) are connected via an abutting block (357); and a limiting member is connected to the bottom of the lifting rod (46).

5. The auxiliary clamping device for cutting special-shaped pipes according to claim 4, characterized in that: The limiting member comprises a limiting groove (463) opened at the bottom of the lifting rod (46), the inner wall of the limiting groove (463) is slidably connected with a limiting rod (471), and the bottom of the limiting rod (471) is connected to the lower surface of the cutting disc (12) through a fixing frame (47).

6. The auxiliary clamping device for cutting special-shaped pipe fittings according to claim 3, characterized in that: The hinged member comprises a connecting block (482) mounted on the outer periphery of the connecting rod (354); a movable ring (481) is fixedly connected to the outer periphery of the connecting block (482); the movable ring (481) is connected to the first fixed cylinder (34) via a first movable groove (341); the connecting block (482) is slidably connected to the clamping block (355); a mounting frame (48) is mounted on the top of the connecting rod (354); a welding frame (483) is connected to the top of the connecting block (482); positioning rods (484) are connected to the inner walls of the mounting frame (48) and the welding frame (483); the two positioning rods (484) are connected to the fixed sleeve (21) via a connecting plate (485); and the connecting plate (485) is rotatably connected to the two positioning rods (484).

7. The auxiliary clamping device for cutting special-shaped pipes according to claim 1, characterized in that: The rotating assembly (50) comprises an arc-shaped gear block (51) fixedly connected to the top of the cutting disc (12) and close to the support frame (31), and an extension plate (52) installed on the outer periphery of the fixed sleeve (21), one side of the extension plate (52) is connected to a gear member, the outer periphery of the rotating sleeve (22) is connected to a plurality of gear teeth (56), and the gear member and the gear teeth (56) are meshingly connected.

8. The auxiliary clamping device for cutting special-shaped pipes according to claim 7, characterized in that: The gear member comprises a mounting post (53) rotatably mounted on one side of the extension plate (52); the outer periphery of the mounting post (53) is connected to a bevel gear (54) meshing with the arc-shaped gear block (51); the outer periphery of the mounting post (53) is connected to a connecting gear (55) meshing with a plurality of gear teeth (56).

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