Pipe part cutting assembly and automatic pipe part cutting assembly line

Abstract

The pipe part cutting assembly comprises a frame-shaped plate and a rotating ring rotationally arranged on one side of the frame-shaped plate, sliding modules are symmetrically arranged on the side, away from the frame-shaped plate, of the rotating ring, and annular cutting knife parts are arranged at the output ends of the sliding modules; the double-cutter collaborative operation mode of the ring cutter A and the ring cutter B which are symmetrically arranged breaks through the limitation of a traditional step-by-step technology, two working procedures are compressed into a single machining cycle, and the coaxial precision of a cutting face and a chamfering face is ensured through linkage control of the rotating ring and the sliding module. The invention further provides an automatic pipe part cutting assembly line which comprises the pipe part cutting assembly and further comprises a feeding and cutting mechanism. The pipe fitting cutting assembly is integrated to an automatic assembly line system, and an efficient machining system integrating feeding, positioning, cutting and chamfering is constructed. The integrated design shortens the single-piece machining rhythm, is suitable for continuous cutting of long-size pipes, and eliminates positioning errors caused by manual intervention.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe component processing, and particularly relates to a pipe component cutting assembly and an automatic pipe component cutting production line. Background Art

[0002] In the prior art, the cutting and chamfering of pipe workpieces are usually carried out by a step-by-step process, resulting in low operation efficiency and difficulty in unifying the machining accuracy. In the traditional method, after the pipe components are cut by a cutting device, they need to be transferred to a chamfering machine or manual tools for end face treatment. This not only increases the process connection time and labor cost, but also easily causes the axis of the pipe components to shift due to multiple clamping, resulting in problems such as inclined cuts or uneven chamfers. In addition, the layout of the split equipment occupies a large space. For batch production scenarios, multi-station switching will also significantly reduce the machining beat, making it difficult to meet the high-efficiency integration requirements of modern automated production lines.

[0003] On the other hand, some equipment attempts to integrate two functions at a single station. However, due to the constraints of the tool structure and movement mode, there are often contradictions between machining quality and stability. For example, in the scheme of using a single cutting tool to complete cutting and then replacing the chamfering tool, it is still necessary to stop the machine to change the tool and continuous machining cannot be achieved; while in the scheme of synchronously completing cutting and chamfering with a single rotating tool, the pipe components are prone to deformation due to uneven cutting force, and the chamfering angle cannot be accurately controlled. Especially for thin-walled pipe components, the traditional process is prone to burr or curling defects, and secondary repair is still required, which instead increases the manufacturing cost and scrap rate. Summary of the Invention

[0004] The present invention provides a pipe component cutting assembly and an automatic pipe component cutting production line, which solve the defect in the prior art that the cutting and chamfering of pipe components cannot be completed in one step.

[0005] The technical solution of the present invention is realized as follows:

[0006] A pipe component cutting assembly includes a frame-shaped plate and a rotating ring rotatably provided on one side thereof. Symmetrically arranged on the side of the rotating ring away from the frame-shaped plate are sliding modules, and a circumferential cutting tool is provided at the output end of the sliding modules;

[0007] The circumferential cutting tools on the two sliding modules are respectively a circumferential cutting tool A and a circumferential cutting tool B. Both ends of the circumferential cutting tool A and the circumferential cutting tool B have obliquely arranged cutting edges with opposite directions, and the obliquely arranged cutting edges on the opposite sides of the circumferential cutting tool A and the circumferential cutting tool B are opposite in direction; the obliquely arranged cutting edge of the circumferential cutting tool A is a chamfering tool, and the obliquely arranged cutting edge of the circumferential cutting tool B is a cutting tool.

[0008] Furthermore, the chamfering tool and the cutting tool are such that the opposite cutting edges are on the same horizontal line.

[0009] Further, a toothed ring is provided on one side of the swivel ring close to the frame-shaped plate; a motor is provided above the frame-shaped plate, and a toothed member drivingly connected to the toothed ring is provided on the output shaft of the motor. The toothed member is a gear meshing with the toothed ring or a toothed belt sleeved outside the toothed ring and drivingly connected thereto.

[0010] Further, the sliding module includes a dovetail groove-shaped seat and an electric lead screw disposed inside it. A dovetail slider sliding in the dovetail groove-shaped seat is helically mounted outside the electric lead screw.

[0011] A fixing block is provided on the dovetail slider, and a coarse adjustment frame fixed by screws is provided on the fixing block. A fine adjustment lead screw is rotatably provided in the coarse adjustment frame. An I-shaped block is helically provided outside the fine adjustment lead screw. The circumferential cutting tool A or the circumferential cutting tool B is fixed on the I-shaped block.

[0012] An automatic cutting production line for pipe-like parts includes the pipe-like part cutting assembly as described above, and also includes a feeding and cutting mechanism. The feeding and cutting mechanism includes a workbench, a roller feeding table provided on the top of the workbench, and vertical belt conveyors symmetrically fixed front and back. Two two-way clamping fixtures are also provided on the workbench on one side of the vertical belt conveyors. The pipe-like part cutting assembly is disposed on the workbench and between the two two-way clamping fixtures.

[0013] Further, the two-way clamping fixture includes two two-way ball screw modules symmetrically provided on the same side as the two vertical belt conveyors. Two sliding plates moving relatively up and down or away from each other are respectively provided on the two-way ball screw modules through nuts. An arc-shaped clamping plate is fixed between the sliding plates on the same side of the front and back two-way ball screw modules, and the arc-shaped openings of the upper and lower arc-shaped clamping plates are oppositely arranged.

[0014] Further, the roller feeding table includes a vertical plate and a two-way electric / cylinder A provided on the vertical plate. A plurality of guide rollers for guiding the movement of the pipe-like parts are respectively provided at the upper and lower output ends of the two-way electric / cylinder A.

[0015] Further, a feeding mechanism is also included. The feeding assembly includes a material rack obliquely arranged above, and an electric / gas rod type partition plate provided above it and realizing the interval between pipe-like parts through up and down telescopic movements. An electric / gas rod type stop column for realizing the discharging of pipe-like parts through up and down telescopic movements and a pipe-like part transition bar extending forward are provided at the oblique discharging port of the material rack. A V-shaped receiving table is provided corresponding to the lower part of the pipe-like part transition bar, and an electric / gas rod type pushing plate is provided at the end of the V-shaped receiving table. Among them, one side of the V-shaped receiving table away from the electric / gas pushing plate corresponds to the space between the upper and lower rows of guide rollers.

[0016] Further, the back surface of the electric / gas rod type baffle has a cross arm, and both ends of the cross arm extend into the side plates on both sides of the material rack. The side plates are provided with sliding grooves corresponding to the ends of the cross arm for its sliding connection; a screw rod is rotatably arranged on the back surface of the cross arm, and the outer part of the screw rod is threadedly connected with a back plate fixed to both side plates. By driving the screw rod to threadedly feed in the back plate, the cross arm is pushed to move along the sliding groove, and the electric / gas rod type baffle is driven to be adjusted.

[0017] Further, the electric / gas rod type baffle, the electric / gas rod type stop column and the electric / gas rod type pusher plate all include an electric / gas push rod and a plate-shaped or rod-shaped member arranged at its output end.

[0018] The beneficial effects brought by the technical solution provided by this application are as follows:

[0019] 1. In the present invention, the symmetrically arranged circular cutting knives A and B move synchronously under the drive of the rotating ring, and complementary cutting effects are formed by the obliquely arranged cutting edges with opposite directions: the cutting knife of the circular cutting knife B cuts into the pipe fitting along the radial direction to complete the cutting, while the chamfering knife of the circular cutting knife A synchronously chamfers the edge of the cut. This two-knife collaborative operation mode breaks through the limitations of the traditional step-by-step process. Not only are the two processes compressed into a single processing cycle, but also the coaxial accuracy of the cutting surface and the chamfering surface is ensured through the linkage control of the rotating ring and the sliding module.

[0020] 2. In the present invention, the specifically designed combination of obliquely arranged cutting edges optimizes the distribution of cutting mechanics. The relative cutting edge directions of the circular cutting knife A (chamfering knife) and the circular cutting knife B (cutting knife) are set such that the radial cutting forces generated when they contact the pipe fitting cancel each other out, effectively reducing the risk of torsional deformation of the pipe fitting. At the same time, the different edge structures of the chamfering knife and the cutting knife (such as parameters like edge angle and rake angle) are specifically strengthened for their respective functions, ensuring both the rapid feed during the cutting process and the smooth transition of the chamfering surface. This design particularly solves the problems of burrs and curling edges that are prone to occur in the processing of thin-walled pipe fittings, obtaining regular cut edges and uniform chamfers through one-time forming, reducing subsequent trimming processes, and greatly improving the qualified rate of finished products and the consistency of surface quality.

[0021] 3. In the present invention, by integrating the pipe fitting cutting assembly into an automated production line system, an efficient processing system integrating feeding, positioning, cutting, and chamfering is constructed. The roller feeding table and the vertical belt conveyor cooperate to achieve automatic feeding and axial positioning of the pipe fittings. Together with the two-way clamping tooling, multi-point rigid fixation of the pipe fittings is performed to ensure that there is no axial movement or radial deviation of the pipe fittings during the cutting process. On the basis of this stable clamping, the circumferential cutting tool A and the circumferential cutting tool B of the cutting assembly synchronously perform the cutting and chamfering operations, enabling the entire production line to complete all processing steps without transferring the workpiece midway or switching equipment. This highly integrated design significantly shortens the single-piece processing cycle, especially suitable for the continuous cutting requirements of long-sized pipes. At the same time, it eliminates the positioning errors caused by manual intervention and significantly improves the standardization level of batch production. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 Schematic diagram of the pipe fitting cutting assembly of the present invention;

[0024] Figure 2 Exploded view of the sliding module of the present invention;

[0025] Figure 3 Schematic diagram of the automatic cutting production line for pipe fittings of the present invention;

[0026] Figure 4 Schematic diagram of the feeding and cutting mechanism of the present invention;

[0027] Figure 5 Rear view schematic diagram of the roller feeding table of the present invention;

[0028] Figure 6 Schematic diagram of the vertical belt conveyor of the present invention;

[0029] Figure 7 Schematic diagram of the two-way clamping tooling of the present invention;

[0030] Figure 8 Schematic diagram of the feeding mechanism of the present invention;

[0031] Figure 9 Partial enlarged view of the electric / pneumatic rod type separator of the present invention.

[0032] In the figure: 10 frame-shaped plate, 11 swivel ring, 12 toothed ring, 13 motor, 14 toothed part, 20 sliding module, 21 dovetail groove-shaped seat, 22 electric lead screw, 23 dovetail slider, 24 I-shaped block, 25 fixed block, 26 coarse adjustment frame, 27 fine adjustment lead screw, 30 cutting ring tool, 31 cutting ring tool A, 32 cutting ring tool B;

[0033] 200 feeding mechanism, 210 material rack, 220 electric / pneumatic rod-type partition plate, 221 cross arm, 222 side plate, 223 sliding groove, 224 screw, 225 back plate, 230 electric / pneumatic rod-type stop column, 240 pipe part transition bar, 250 V-shaped receiving table, 260 electric / pneumatic rod-type pushing plate;

[0034] 300 feeding and cutting mechanism, 310 workbench, 320 roller-type feeding table, 321 vertical plate, 322 bidirectional electric / pneumatic cylinder A, 323 guide roller, 330 vertical belt conveyor, 331 bidirectional electric / pneumatic cylinder B, 332 trough-shaped plate, 333 slide rail, 334 slider, 340 bidirectional clamping tooling, 341 bidirectional ball screw module, 342 slide plate, 343 arc-shaped clamping plate. Specific embodiments

[0035] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Embodiment 1

[0037] Refer to Figure 1-2, a pipe cutting component, including a frame-shaped plate 10 and a rotating ring 11 rotatably arranged on one side thereof. On the side of the rotating ring 11 away from the frame-shaped plate 10, sliding modules 20 are symmetrically arranged, and a circumferential cutting tool 30 is provided at the output end of the sliding module 20; the circumferential cutting tools 30 on the two sliding modules 20 are respectively a circumferential cutting tool A 31 and a circumferential cutting tool B 32. Both ends of the circumferential cutting tool A 31 and the circumferential cutting tool B 32 have obliquely arranged cutting edges with opposite directions, and the obliquely arranged cutting edges on the opposite sides of the circumferential cutting tool A 31 and the circumferential cutting tool B 32 have opposite directions; the obliquely arranged cutting edge of the circumferential cutting tool A 31 is a chamfering tool, and the obliquely arranged cutting edge of the circumferential cutting tool B 32 is a cutting tool. Through the rotational arrangement of the rotating ring 11 and the linkage of the symmetrically distributed sliding modules 20, the circumferential cutting tool A 31 and the circumferential cutting tool B 32 can rotate synchronously and feed precisely along the radial direction. Among them, the design of the opposite directions of the obliquely arranged cutting edges of the circumferential cutting tool A 31 and the circumferential cutting tool B 32 (especially the opposite directions of the cutting edges on the opposite sides) enables the two to form complementary cutting trajectories when the rotating ring 11 rotates: the cutting tool of the circumferential cutting tool B 32 cuts into the pipe along the radial direction of the pipe to complete the cutting, while the chamfering tool of the circumferential cutting tool A 31 simultaneously cuts obliquely along the edge of the cut to form a chamfer. In addition, the circumferential cutting tool A 31 adopts a chamfered cutting edge structure, which is specifically used for forming the inclined surface, and the circumferential cutting tool B 32 adopts a cutting edge structure, which focuses on efficient cutting. The functions of the two are clearly divided, and they work together through the synchronous control of the sliding module 20.

[0038] During the processing, the rotating ring 11 drives the two sliding modules 20 and the circumferential cutting tool A 31 and the circumferential cutting tool B 32 to rotate synchronously. At the same time, the sliding module 20 pushes the two tools to feed towards the center of the pipe along the radial direction. Since the obliquely arranged cutting edges on the opposite sides of the circumferential cutting tool A 31 and the circumferential cutting tool B 32 have opposite directions, when the tools contact the pipe, the cutting edge of the circumferential cutting tool B 32 cuts into the pipe wall in the positive direction to complete the cutting, while the chamfering edge of the circumferential cutting tool A 31 chamfers the edge of the cut in the reverse oblique cutting manner. The obliquely arranged cutting edges of the two form symmetric cutting forces during the rotation process, canceling out the radial torsion force with each other to avoid pipe deformation; at the same time, the different cutting edge structures (such as the edge angle and the rake angle) of the chamfering tool and the cutting tool are optimized for the chamfering smoothness and the cutting efficiency respectively, ensuring that high-precision cutting and chamfering are completed synchronously in a single processing cycle, improving the processing quality and efficiency.

[0039] In some embodiments, the directions of the chamfering cutter and the cutting cutter are on the same horizontal line relative to the blade tip. By limiting the directions of the chamfering cutter of the circular cutter A 31 and the cutting cutter of the circular cutter B 32 to be opposite and on the same horizontal line, it is ensured that the blade tips of the two cutters can simultaneously contact the surface of the pipe fitting and form a coplanar cutting action when the two cutters rotate synchronously and feed radially. This design strictly aligns the starting points of the cutting and chamfering actions to avoid the misalignment of the cutting sequence caused by the height difference of the blades, thereby eliminating the local deformation or vibration of the pipe fitting caused by unilateral force in the early stage of processing, further improving the flatness of the cut surface and the uniformity of the chamfering, and reducing tool wear. When the sliding module 20 drives the circular cutter A 31 and the circular cutter B 32 to feed radially toward the pipe fitting, the blade tips of the two cutters touch the outer wall of the pipe fitting synchronously because they are on the same horizontal line. Since the cutting blade tip of the circular cutter B 32 cuts into the tube wall in a positive direction to perform cutting, while the chamfering blade tip of the circular cutter A 31 chamfers the edge of the tube wall in a reverse direction, the two form symmetrical cutting force action points under the condition of coplanar contact, thereby completing the chamfering process synchronously at the moment of cutting.

[0040] In some embodiments, a gear ring 12 is provided on the side of the rotating ring 11 close to the frame plate 10; a motor 13 is provided above the frame plate 10, and a toothed member 14 is provided on the output shaft of the motor 13 and is connected to the gear ring 12 in a transmission manner. The toothed member 14 is a gear meshed with the gear ring 12 or a toothed belt mounted on the outside of the gear ring 12 and connected to the gear ring 12 in a transmission manner. By adding a gear ring 12 on the side of the rotating ring 11 close to the frame plate 10, and cooperating with the motor 13 above the frame plate 10 and the gear or toothed belt of the toothed member 14 connected to its output shaft, a precise driving system of the rotating ring 11 is constructed. The meshing transmission design of the gear ring 12 and the toothed member 14 efficiently converts the rotational power of the motor 13 into the synchronous rotational motion of the rotating ring 11, avoids the slip error of the traditional transmission mode (such as belt or friction transmission), ensures that the ring cutter A 31 and the ring cutter B 32 maintain strict synchronization and rotation angle controllability during the processing, thereby improving the coordination accuracy of the cutting and chamfering actions. When the motor 13 is started, the toothed part 14 (gear or toothed belt) of its output shaft meshes with the toothed ring 12 on the rotating ring 11 to drive the rotating ring 11 to rotate at a constant speed around the axis of the frame plate 10. Since the meshing action of the toothed ring 12 and the toothed part 14 has the characteristics of high transmission ratio and low return clearance, the rotation angle and speed of the rotating ring 11 can be accurately controlled, thereby driving the symmetrically arranged sliding module 20 and the ring cutter A 31 and the ring cutter B 32 to synchronously move around the pipe circumference. This transmission mechanism not only provides stable power for the rotary feed of the tool, but also avoids phase deviation in the power transmission process through rigid meshing, ensuring that the oblique blades of the two tools always maintain a preset relative position relationship during the cutting process, and finally achieving precise matching of the cutting depth and the chamfer angle.

[0041] In some embodiments, the sliding module 20 includes a dovetail groove type seat 21 and an electric lead screw 22 disposed inside thereof. A dovetail slider 23 that slides in the dovetail groove type seat 21 is helically installed outside the electric lead screw 22. A fixed block 25 is provided on the dovetail slider 23, and a coarse adjustment frame 26 fixed to the fixed block 25 by screws. A fine adjustment lead screw 27 is rotatably provided in the coarse adjustment frame 26. An I-shaped block 24 is helically provided outside the fine adjustment lead screw 27. The circumferential cutting tool A 31 or the circumferential cutting tool B 32 is fixed to the I-shaped block 24. Through the combined design of the dovetail groove type seat 21, the electric lead screw 22, the dovetail slider 23, the fixed block 25, the coarse adjustment frame 26, the fine adjustment lead screw 27 and the I-shaped block 24 of the sliding module 20, a multi-stage adjustable tool feeding system is constructed. Among them, the electric lead screw 22 drives the dovetail slider 23 to slide along the dovetail groove type seat 21 to achieve coarse adjustment positioning, and the fine adjustment lead screw 27 drives the circumferential cutting tool A 31 or the circumferential cutting tool B 32 to perform fine adjustment through the I-shaped block 24, forming a "coarse adjustment + fine adjustment" composite adjustment mechanism. This structure not only ensures the large-range and rapid adjustment ability of the radial feed of the tool, but also realizes the fine calibration of the tool position through the thread engagement of the fine adjustment lead screw 27. The two sides of the coarse adjustment frame 26 have U-shaped holes, and the position of the coarse adjustment frame 26 on the fixed block 25 can be changed by manually adjusting the screw tightness according to the tool position and then sliding the coarse adjustment frame 26.

[0042] When the electric lead screw 22 is energized and rotates, it drives the dovetail slider 23 to slide linearly in the radial direction inside the dovetail groove type seat 21 to complete the coarse adjustment positioning of the circumferential cutting tool member 40 / 50. The coarse adjustment frame 26 is fixed to the fixed block 25 by screws. After providing preliminary locking, the fine adjustment lead screw 27 is manually rotated, and the spiral fit between it and the I-shaped block 24 is used to push the circumferential cutting tool member to have a small radial displacement, realizing the fine calibration of the cutting edge position. The fit clearance between the I-shaped block 24 and the fine adjustment lead screw 27 is extremely small, ensuring the stability of the tool after fine adjustment. The coarse adjustment and the fine adjustment work together, so that the oblique cutting edges of the circumferential cutting tool A 31 and the circumferential cutting tool B 32 can accurately match the preset cutting trajectory during the rotation of the rotating ring 11. At the same time, the guiding structure of the dovetail groove type seat 21 inhibits the lateral offset, ultimately ensuring the synchronous high-precision processing of cutting and chamfering.

[0043] Embodiment 2

[0044] Refer to Figure 3-8, the automatic cutting pipeline for pipe components, including the pipe component cutting assembly described above, further includes a feeding and cutting mechanism 300; the feeding and cutting mechanism 300 includes a workbench 310, a roller feeding table 320 arranged on the top of the workbench 310, and vertically arranged belt conveyors 330 symmetrically fixed front and back. There are also two bidirectional clamping fixtures 340 on the workbench 310 on one side of the vertically arranged belt conveyors 330. The pipe component cutting assembly is arranged on the workbench 310 and between the two bidirectional clamping fixtures 340. By integrating the roller feeding table 320, the vertically arranged belt conveyors 330 symmetrically fixed front and back, the bidirectional clamping fixtures 340 and the pipe component cutting assembly on the workbench 310, a fully automated pipeline for pipe processing is constructed. The roller feeding table 320 realizes the continuous horizontal transportation of the pipe. The vertically arranged belt conveyors 330 complete the vertical positioning by synchronously clamping the pipe front and back. The bidirectional clamping fixtures 340 apply symmetric clamping forces from both sides of the pipe to ensure that the axis of the pipe component is strictly aligned with the cutting plane during cutting. The cutting assembly is located between the two bidirectional clamping fixtures 340. By using the multi-point rigid fixation of the clamping fixtures on the pipe component, the radial vibration or axial movement of the pipe component during cutting is eliminated, thereby providing a stable mechanical environment for the high-precision synchronous processing of the circumferential cutting tool A 31 and the circumferential cutting tool B 32.

[0045] After the pipe is transported to the preset station by the roller feeding table 320, the vertically arranged belt conveyors 330 symmetrically fixed front and back are started, and the pipe is driven to move up and down by the friction of the belt until its axis is perpendicular to the cutting plane. Subsequently, the two bidirectional clamping fixtures 340 extend and clamp the pipe synchronously from both sides of the pipe, forming a four-point rigid constraint to ensure that the pipe component has no deviation during cutting. At this time, the rotating ring 11 of the pipe component cutting assembly drives the circumferential cutting tool A 31 and the circumferential cutting tool B 32 to rotate and feed radially. The cutting tool 32 and the chamfering tool 31 synchronously complete cutting and chamfering under the stable clamping of the bidirectional clamping fixture 340. The combination of the roller feeding table 320 and the vertically arranged belt conveyors 330 not only realizes rapid feeding and positioning, but also adapts to the processing requirements of pipes with different diameters through the dual effects of mechanical limit and friction drive. The symmetric clamping force of the bidirectional clamping fixture 340 can offset the radial component force during cutting and avoid the deformation of thin-walled pipe components, ultimately realizing the efficient and continuous operation of the pipeline.

[0046] In some embodiments, the two-way clamping tooling 340 includes two two-way ball screw modules 341 symmetrically arranged on the same side as the two vertical belt conveyors 330. Two sliding plates 342 that move relatively up and down or away from each other are respectively arranged on the two-way ball screw modules 341 through nuts. An arc-shaped clamping plate 343 is fixed between the sliding plates 342 on the same side of the front and rear two-way ball screw modules 341, and the arc-shaped openings of the upper and lower two arc-shaped clamping plates 343 are arranged opposite to each other. Through the collaborative design of the two-way ball screw module 341, the sliding plate 342 and the arc-shaped clamping plate 343 in the two-way clamping tooling 340, the self-adaptive multi-point flexible clamping and high-precision centering and positioning of the pipe fittings are realized. The two-way ball screw module 341 drives the upper and lower sliding plates 342 to move symmetrically, driving the arc-shaped clamping plate 343 to approach or move away from the pipe fitting synchronously, forming a four-point contact clamping structure. The arc-shaped openings of the arc-shaped clamping plates 343 are arranged opposite to each other to adapt to the contours of pipe fittings with different diameters. The clamping pressure is evenly dispersed through surface contact, avoiding the pipe fitting indentation or oval deformation caused by point contact of traditional fixtures. At the same time, the high transmission precision of the ball screw ensures the stable controllability of the clamping force, providing a rigid support for the cutting assembly and suppressing the machining vibration.

[0047] When the two-way ball screw module 341 is started, its two-way thread drives the upper and lower sliding plates 342 to move synchronously in opposite directions (the sliding plates on the same side move towards or away from each other), driving the arc-shaped clamping plate 343 fixed on the sliding plate 342 to close or open. When the pipe fitting is positioned by the vertical belt conveyor 330, the front and rear two groups of two-way ball screw modules 341 act synchronously, so that the four arc-shaped clamping plates 343 wrap the outer wall of the pipe fitting from the up and down directions on both sides of the pipe-like part. The arc-shaped surface of the arc-shaped clamping plate 343 fits the outer wall of the pipe. Through the precise displacement control of the ball screw, the self-adaptive clamping force adjustment is realized, which not only avoids overloading and pinching the thin-walled pipe fitting, but also offsets the radial component forces generated by the circumferential cutting tool A 31 and the circumferential cutting tool B 32 during cutting through symmetric pressing, ensuring that the axis of the pipe fitting is strictly perpendicular to the cutting plane.

[0048] In some embodiments, a bidirectional electric / cylinder B331 is provided below the two vertical belt conveyors 330. The output ends on both sides of the bidirectional electric / cylinder B331 are fixed to the lower parts of the two vertical belt conveyors 330. A trough-shaped plate 332 with its bottom fixed to the workbench 310 is fixed below the bidirectional electric / cylinder B331. Slide rails 333 are provided on both sides of the trough-shaped plate 332. Sliders that slide along the slide rails 333 are respectively provided on both sides of the bottoms of the two vertical belt conveyors 330. The bidirectional electric / cylinder B331 is fixed to the bottom of the vertical belt conveyor 330 through the output ends on both sides, driving the two to move horizontally towards or away from each other along the slide rails 333 to adapt to the conveying requirements of different pipe diameters; the sliding fit between the slide rails 333 and the sliders ensures the linear guiding property when the conveyor moves, avoiding deviation or jamming. The trough-shaped plate 332 serves as an overall support base, providing a rigid constraint by being fixed to the workbench 310 at the bottom, preventing vibration or deformation during the adjustment process, thereby ensuring the stability of the vertical positioning of the pipe.

[0049] When it is necessary to adjust the distance between the two vertical belt conveyors 330, the bidirectional electric / cylinder B331 is activated. Its output ends on both sides simultaneously push or pull the two conveyors to move horizontally along the slide rails 333. The cooperation between the slide rails 333 and the sliders at the bottom of the conveyor restricts the movement direction, ensuring that the two are always parallel and their axes are aligned. The rigid structure of the trough-shaped plate 332 absorbs the lateral force during the adjustment process, avoiding deformation of the workbench 310 due to force. After the adjustment is completed, the friction between the slide rails 333 and the sliders and the self-locking function of the cylinder fix the position of the conveyor, enabling it to maintain a stable clamping state during subsequent pipe conveying.

[0050] In addition, it should be noted that conventional belt conveyors are in a horizontal state. In this case, since it is necessary to wrap and synchronously convey the pipe through the two belt conveyors 330, the vertical belt conveyor 330 is set in a horizontal vertical state, so as to satisfy the contact and conveyance between the conveyor belts between two adjacent vertical belt conveyors 330 and the pipe.

[0051] In some embodiments, the roller feeding platform 320 includes a vertical plate 321 and a bidirectional electric / pneumatic cylinder A322 disposed on the vertical plate 321, and the upper and lower output ends of the bidirectional electric / pneumatic cylinder A322 are respectively provided with a plurality of guide rollers 323 for guiding the movement of pipe-like parts. The vertical plate 321, the bidirectional electric / pneumatic cylinder A322, and the guide rollers 323 distributed up and down of the roller feeding platform 320 realize the adaptive diameter adjustment and guiding function during the pipe conveying process. The bidirectional electric / pneumatic cylinder A322 drives the upper and lower rows of guide rollers 323 to move synchronously toward or away from each other, and the conveying requirements of different pipe diameters are adapted by adjusting the spacing between the guide rollers 323; the rolling contact of the guide rollers 323 not only reduces the friction resistance of the pipe movement, but also avoids the bending and deformation of the pipe by dispersing the supporting force of multiple rollers. The vertical plate 321 provides a rigid mounting base for the bidirectional electric / pneumatic cylinder A 322 and the guide roller 323, ensuring the straightness of the conveying path, and cooperates with the vertical belt conveyor 330 to achieve precise alignment of the pipe axis and the cutting plane. When the pipe enters the roller feeding table 320, the bidirectional electric / pneumatic cylinder A 322 drives the upper and lower rows of guide rollers 323 to move synchronously to a preset spacing according to the pipe diameter, so that the pipe is clamped between the upper and lower guide rollers 323. During the conveying process, the guide rollers 323 rotate freely with the movement of the pipe, and push the pipe to move smoothly along the length direction of the vertical plate 321 through rolling friction. At the same time, the limiting effect of the upper and lower guide rollers 323 suppresses the up and down jumping or lateral deviation of the pipe. This structure dynamically adjusts the spacing between the guide rollers 323 and the coordination of the rolling guide, which is compatible with the transportation requirements of different pipe diameters and reduces the risk of scratches on the pipe surface caused by sliding friction, ensuring that the pipe enters the subsequent vertical belt conveyor 330 positioning station in a stable posture, providing a highly consistent feeding basis for the precise processing of the cutting components.

[0052] In some embodiments, a loading mechanism 200 is further included. The loading assembly 200 includes a rack 210 obliquely arranged above, and an electric / gas rod type partition plate 220 arranged above the rack 210 and realizing the interval between pipe-like parts through up-and-down telescopic movement. At the oblique discharge port of the rack 210, there is an electric / gas rod type stop column 230 realizing the discharge of pipe-like parts through up-and-down telescopic movement and a pipe-like part transition strip 240 extending forward. Below the pipe-like part transition strip 240, there is a V-shaped receiving table 250, and at the end of the V-shaped receiving table 250, there is an electric / gas rod type pushing plate 260; where one side of the V-shaped receiving table 250 away from the electric / gas pushing plate 220 corresponds to the space between the upper and lower rows of guiding rollers 323. The electric / gas rod type partition plate 220 separates the stacked pipes through up-and-down telescopic movement, preventing multiple pipes from sliding down simultaneously; the electric / gas rod type stop column 230 controls the orderly release of a single pipe from the discharge port of the oblique rack 210 to the transition strip 240, and guides the pipe to the space between the upper and lower guiding rollers 323 of the roller feeding table 320 through the guiding function of the V-shaped receiving table 250. This design solves the problems of pipe stacking jamming and unmatched feeding beats in traditional loading, ensuring that the pipes continuously enter the feeding and cutting mechanism 300 in a single and spaced state. At the same time, the self-centering function of the V-shaped receiving table 250 adapts to the transition and positioning requirements of pipes with different diameters.

[0053] When the pipes slide down due to gravity in the oblique rack 210, the electric / gas rod type partition plate 220 periodically inserts downward to separate the pipe stack, only allowing the single bottom pipe to slide towards the discharge port; the electric / gas rod type stop column 230 is initially in the raised state to block the pipes. After the feeding signal is triggered, the stop column 230 descends, releasing the single pipe to slide along the transition strip 240 into the V-shaped receiving table 250. The inclined surface structure of the V-shaped receiving table 250 makes the pipe automatically center. Subsequently, the electric / gas rod type pushing plate 260 pushes the pipe forward to the space between the upper and lower guiding rollers 323 of the roller feeding table 320. The partition, stop, and push actions are linked with the roller feeding table 320 of the feeding and cutting mechanism 300 through timing control, ensuring that the pipes are conveyed one by one according to the processing beat, avoiding stacking interference or feeding gaps. At the same time, the precise alignment design of the end of the V-shaped receiving table 250 and the guiding rollers 323 ensures the smooth transition of the pipes to the cutting station and completes the full-process automatic connection.

[0054] In some embodiments, the back surface of the electric / gas rod-type baffle plate 220 has a cross arm 221. Both ends of the cross arm 221 extend into the side plates 222 on both sides of the material rack 210. The side plates 222 are provided with sliding grooves 223 corresponding to the ends of the cross arm 221 for sliding connection therewith. A screw rod 224 is rotatably provided on the back surface of the cross arm 221. The outer part of the screw rod 224 is threadedly connected with a back plate 225 fixed to the side plates 222 at both ends. By driving the screw rod 224 to perform threaded feeding in the back plate 225, the cross arm 221 is pushed to move along the sliding groove 223 and drive the electric / gas rod-type baffle plate 220 to be adjusted. Both ends of the cross arm 221 are slidably connected to the side plates 222 on both sides of the material rack 210 through the sliding grooves 223, ensuring the linear guiding during the horizontal movement of the baffle plate 220. The threaded fit between the screw rod 224 and the back plate 225 drives the cross arm 221 to displace along the sliding groove 223 by rotation, so as to accurately adjust the insertion depth or the lateral position of the baffle plate 220 inserted into the material rack 210. This structure can adjust the contact position between the baffle plate 220 and the pipe stack according to different pipe diameters, avoid the failure of baffle or jamming due to the change of pipe diameter, and at the same time ensure the stability of the baffle plate 220 during the action through mechanical locking, improving the adaptability and reliability of the material separation action.

[0055] When it is necessary to adjust the horizontal position of the baffle plate 220, the screw rod 224 is driven to rotate. Its threaded engagement with the fixed back plate 225 converts the rotational motion into the linear displacement of the cross arm 221 along the sliding groove 223, thereby driving the baffle plate 220 to move inward or outward of the material rack 210. For example, for pipes with a larger diameter, the screw rod 224 can be rotated to move the cross arm 221 outward to increase the insertion depth of the baffle plate 220 to effectively block the upper-layer pipes; on the contrary, for pipes with a smaller diameter, the baffle plate 220 is moved inward to avoid excessive interference. The sliding limit of the sliding groove 223 on the cross arm 221 ensures that the baffle plate 220 always maintains a horizontal posture and avoids skew jamming. After the adjustment is completed, the self-locking characteristic of the screw rod 224 and the back plate 225 fixes the position of the cross arm 221, enabling the baffle plate 220 to act stably during the up-and-down telescopic material separation and accurately controlling the blanking interval of a single pipe.

[0056] In some embodiments, the electric / gas rod-type material separating plate 220, the electric / gas rod-type material blocking column 230, and the electric / gas rod-type material pushing plate 260 all include an electric / gas push rod and a plate-shaped or rod-shaped member provided at its output end. The electric / gas push rod serves as a power source to provide linear telescopic driving force. The plate-shaped member (such as the material separating plate and the material pushing plate) is used for material separation or pushing actions with a large covered area, and the rod-shaped member (such as the material blocking column) is used for the blocking action of precisely inserting into the gap between pipes. This design simplifies the selection and installation of pneumatic / electric actuators, ensures that the response speed and stroke accuracy of the material separation, material blocking, and material pushing actions are consistent, and at the same time reduces the complexity of equipment maintenance through standardized interfaces. Taking the electric / gas rod-type material separating plate 220 as an example: after the electric / gas push rod is started, its output end drives the plate-shaped member to vertically insert into the gap of the pipe stack in the material rack 210, and multiple pipes are physically separated through the width of the plate-shaped member; similarly, the rod-shaped member of the electric / gas rod-type material blocking column 230 controls the opening and closing state of the pipe discharge port through the telescopic movement of the electric / gas push rod, and the slender structure of the rod-shaped member can precisely insert into the gap between adjacent pipes to complete single-pipe interception; the electric / gas rod-type material pushing plate 260 pushes the pipes in the V-shaped material receiving table 250 to the roller-type feeding table 320 through the plane of the plate-shaped member. All three are based on the linear driving characteristics of the electric / gas push rod, combine the forms of the plate-shaped or rod-shaped members to adapt to different functional requirements, and coordinate the action beats through a unified timing control module to ensure the full-automatic connection of the pipes from material separation, material blocking to material pushing, and at the same time reduce the control logic redundancy caused by the structural differences of the execution components.

[0057] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pipe cutting assembly, characterized in that: It comprises a frame plate (10) and a rotating ring (11) rotatably arranged on one side thereof, wherein a sliding module (20) is symmetrically arranged on the side of the rotating ring (11) away from the frame plate (10), and a ring cutting blade (30) is arranged on the output end of the sliding module (20); The circular cutting blades (30) on the two sliding modules (20) are respectively a circular cutting blade A (31) and a circular cutting blade B (32). Both ends of the circular cutting blade A (31) and the circular cutting blade B (32) have oblique blades in opposite directions, and the oblique blades on the opposite sides of the circular cutting blade A (31) and the circular cutting blade B (32) are in opposite directions; the oblique blade of the circular cutting blade A (31) is a chamfering blade, and the oblique blade of the circular cutting blade B (32) is a cutting blade.

2. The pipe cutting assembly according to claim 1, characterized in that: The chamfering knife and the cutting knife are in the same horizontal line relative to the blade tip.

3. The pipe cutting assembly according to claim 1, characterized in that: A gear ring (12) is provided on one side of the rotating ring (11) close to the frame plate (10); a motor (13) is provided above the frame plate (10); an output shaft of the motor (13) is provided with a toothed part (14) transmission-connected to the gear ring (12); the toothed part (14) is a gear meshing with the gear ring (12) or a toothed belt sleeved outside the gear ring (12) and transmission-connected to the gear ring (12).

4. The pipe cutting assembly according to claim 1, characterized in that: The sliding module (20) comprises a dovetail groove seat (21) and an electric screw (22) arranged inside the dovetail groove seat, and a dovetail slider (23) sliding in the dovetail groove seat (21) is spirally mounted on the outside of the electric screw (22); The dovetail slider (23) is provided with a fixed block (25), a coarse adjustment frame (26) fixed on the fixed block (25) by screws, a fine adjustment screw rod (27) is rotatably provided in the coarse adjustment frame (26), an external spiral of the fine adjustment screw rod (27) is provided with an I-shaped block (24), and a circular cutting knife A (31) or a circular cutting knife B (32) is fixed on the I-shaped block (24).

5. Automatic pipe cutting line, characterized by: It comprises the pipe cutting assembly as described in any one of claims 1 to 4, and also comprises a feeding and cutting mechanism (300); the feeding and cutting mechanism (300) comprises a workbench (310), a roller feeding table (320) arranged on the top of the workbench (310), and a vertical belt conveyor (330) fixed symmetrically in the front and rear directions, and the workbench (310) is also provided with two bidirectional clamping tools (340) located on one side of the vertical belt conveyor (330), wherein the pipe cutting assembly is arranged on the workbench (310) and is located between the two bidirectional clamping tools (340).

6. The automatic pipe cutting line according to claim 5, characterized in that: The bidirectional clamping tool (340) comprises two bidirectional ball screw modules (341) symmetrically arranged on the same side of the two vertical belt conveyors (330), and two slide plates (342) that move relative to or apart from each other are respectively arranged on the bidirectional ball screw module (341) through nuts, and an arc-shaped clamping plate (343) is fixed between the slide plates (342) on the same side of the front and rear bidirectional ball screw modules (341), and the arc-shaped openings of the upper and lower arc-shaped clamping plates (343) are arranged relative to each other.

7. The automatic pipe cutting line according to claim 5, characterized in that: The roller feeding platform (320) comprises a vertical plate (321) and a bidirectional electric / pneumatic cylinder A (322) arranged on the vertical plate (321), and the upper and lower output ends of the bidirectional electric / pneumatic cylinder A (322) are respectively provided with a plurality of guide rollers (323) for guiding the movement of the pipe-like parts.

8. The automatic pipe cutting line according to claim 7, characterized in that: It also includes a loading mechanism (200), wherein the loading assembly (200) includes a material rack (210) arranged obliquely on the top and an electric / pneumatic rod type material partition plate (220) arranged on the top and realizing the spacing between pipe parts by upward and downward telescopic movements, and an electric / pneumatic rod type material blocking column (230) and a pipe transition strip (240) extending forward are provided at the oblique discharge port of the material rack (210), and a V-shaped material receiving platform (250) is provided below the corresponding pipe transition strip (240), and an electric / pneumatic rod type material pushing plate (260) is provided at the end of the V-shaped material receiving platform (250); wherein the side of the V-shaped material receiving platform (250) away from the electric / pneumatic material pushing plate (220) corresponds to between the upper and lower rows of guide rollers (323).

9. The automatic pipe cutting line according to claim 8, characterized in that: The back of the electric / pneumatic rod type material separator (220) is provided with a cross arm (221), and both ends of the cross arm (221) extend to the side plates (222) on both sides of the material rack (210), wherein the side plates (222) are provided with sliding grooves (223) slidably connected to the ends of the cross arm (221); a screw rod (224) is also rotatably arranged on the back of the cross arm (221), and the external thread of the screw rod (224) is connected to a back plate (225) fixed to the side plate (222) at both ends, and the screw rod (224) is driven to threadably feed in the back plate (225) to push the cross arm (221) to move along the sliding groove (223) and drive the electric / pneumatic rod type material separator (220) to adjust.

10. The automatic pipe cutting line according to claim 8, characterized in that: The electric / pneumatic rod type material separator plate (220), the electric / pneumatic rod type material blocking column (230) and the electric / pneumatic rod type material pushing plate (260) all include an electric / pneumatic push rod and a plate-shaped member or a rod-shaped member arranged at the output end thereof.

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