Mechanical fixed-length online following flat tube cutting machine
Patent Information
- Application Number
- CN202611232561.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-08-14
- Publication Date
- 2026-10-13
Smart Images
Figure CN122896210A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the technical field of extruded pipe cutting and processing machinery and equipment, specifically a mechanical fixed-length online following flat pipe cutting machine, which is mainly used in the continuous fixed-length cutting and processing of flat and long strip profiles such as plastic flat pipes on the production line. Background Technology
[0002] Currently, in the industrial production and processing of flat tube profiles, online continuous extrusion and traction molding processes are commonly used. The corresponding cutting equipment must dynamically cut the tubes in sync with the profile conveying rhythm to ensure continuous production on the assembly line. Existing mainstream flat tube cutting machines are mainly divided into two categories: encoder-controlled electronic length cutting and intermittent fixed-length cutting.
[0003] Among them, the electronically controlled encoder counting fixed-length cutting equipment relies on the electrical system to collect the profile conveying length signal and controls the cutting action through the program. It is easily affected by factors such as conveyor roller belt slippage, electrical signal delay, voltage fluctuation, encoder counting error, and signal interference. The cutting length error is generally ±1mm to ±2mm, which cannot meet the high-precision processing requirements of high-end precision flat tube fittings. At the same time, the electrical control system has a high failure rate, is complicated to debug, has high maintenance costs, and its accuracy decays significantly over long-term operation.
[0004] Intermittent fixed-length cutting equipment requires the profile to be stopped and positioned before cutting, which cannot be adapted to online continuous production lines. It requires frequent start-stop of the conveyor mechanism, resulting in extremely low production efficiency. Furthermore, the profile is prone to displacement deviation during the start-stop process, which also leads to unstable cutting accuracy.
[0005] Furthermore, existing online follow-up cutting machines have separate follow-up and length-fixing mechanisms, resulting in a mismatch between follow-up compensation accuracy and length control accuracy. This leads to profile jitter and deviation during cutting, further exacerbating length deviations and making it difficult to meet the high-precision length-fixing requirements of industries such as precision hardware, home appliance components, and new energy pipelines, which demand ±0.2mm to ±0.5mm precision cutting of flat tubes. In summary, existing technologies suffer from industry pain points such as low cutting accuracy, poor stability, high electrical dependence, weak adaptability to continuous production, and high maintenance costs.
[0006] Therefore, the aforementioned technical problems need to be solved. Summary of the Invention
[0007] To address the above-mentioned technical problems, this invention provides a mechanical fixed-length online following flat tube cutting machine. Through pure mechanical structure linkage, it achieves precise fixed-length control, eliminating interference from electrical counting errors. Combined with a synchronous following cutting structure, it significantly improves the cutting length accuracy of flat tubes while ensuring uninterrupted continuous production on the assembly line, reducing equipment failure rate and maintenance costs, and meeting the batch processing needs of high-end precision flat tubes.
[0008] To achieve the above objectives, the technical solution of the present invention is as follows: A mechanical fixed-length online following flat tube cutting machine includes a frame, on which a following slide mechanism is slidably arranged along the flat tube conveying direction; The following slide mechanism is equipped with a pressing and positioning mechanism for pressing the flat tube and a cutting mechanism for cutting the flat tube; A mechanical length detection mechanism is fixedly connected to the rear end of the following slide mechanism along the flat tube conveying direction, and the mechanical length detection mechanism moves synchronously with the following slide mechanism. The mechanical length detection mechanism includes a length adjustment guide rail, a magnetic scale, and a sliding limit seat; The fixed-length adjustment guide rail is arranged along the flat tube conveying direction, the magnetic grating ruler is arranged parallel to the fixed-length adjustment guide rail, the sliding limit seat is slidably arranged on the fixed-length adjustment guide rail, and the magnetic head of the magnetic grating ruler is provided on the sliding limit seat; The sliding limit seat moves to a preset position corresponding to the target cutting length according to the reading of the magnetic ruler during equipment adjustment and then locks itself. The sliding limit seat is equipped with a detection element. When the front end of the flat tube is delivered to trigger the detection element, a cutting trigger signal is generated. The following slide mechanism responds to the cutting trigger signal and starts to move synchronously with the flat tube, the clamping and positioning mechanism clamps the flat tube, and the cutting mechanism cuts the flat tube.
[0009] This mechanical fixed-length online following flat tube cutting machine uses a magnetic ruler to preset the cutting length of the flat tube, ensuring dimensional accuracy through purely mechanical rigid length setting. The integrated structure of the purely mechanical length setting and positioning mechanism and the synchronous online following cutting mechanism eliminates the interference of electrical counting errors in traditional electronically controlled length setting. Through rigid mechanical limiting and precise transmission distance measurement, it achieves high-precision fixed-length cutting of flat tubes within ±0.2mm. Simultaneously, the cutting mechanism moves synchronously with the profile conveyor speed throughout the entire process, achieving dynamic and uninterrupted cutting, balancing production efficiency and cutting accuracy. This ensures uninterrupted continuous production on the assembly line, significantly improves the cutting length accuracy of flat tubes, reduces equipment failure rate and maintenance costs, and meets the batch processing needs of high-end precision flat tubes.
[0010] In a further optimized scheme, the detection element is a fiber optic probe, which cross-detects the flat tube being transported. When the end face of the flat tube blocks the laser, a mechanical length confirmation signal is triggered and a cutting trigger signal is output simultaneously.
[0011] The detection element is a fiber optic probe and laser triggering method, which is a non-contact detection method. The laser is triggered when the end face of the flat tube is blocked. It has a fast response speed, no mechanical wear, and precise positioning without elastic offset, avoiding the positioning errors that may occur in contact detection.
[0012] In a further optimized design, the clamping and positioning mechanism includes a front clamping mechanism and a rear clamping mechanism, which are respectively located at the front end and rear end of the cutting mechanism along the flat tube conveying direction; the front clamping mechanism and the rear clamping mechanism clamp the flat tube in the vertical direction.
[0013] The clamping and positioning mechanism is divided into two groups, front and rear, located upstream and downstream of the cutting mechanism respectively; it applies force in the up and down direction by clamping at two points at the front and rear; both ends of the flat tube are fixed during cutting to prevent the profile from shaking or shifting during the cutting process, ensuring a flat cut surface, and at the same time assisting in locking the fixed length dimension.
[0014] In a further optimized design, the front clamping mechanism includes an upper front clamping cylinder and a lower front clamping cylinder. The upper front clamping cylinder and the lower front clamping cylinder are respectively positioned opposite each other above and below the flat tube. The piston rod ends of the upper front clamping cylinder and the lower front clamping cylinder are respectively fixedly connected to clamping plates. The two clamping plates are positioned opposite each other. The upper front clamping cylinder and the lower front clamping cylinder simultaneously drive the two clamping plates to move towards each other to clamp the flat tube. The lower front clamping cylinder body is fixedly installed, while the upper front clamping cylinder body has an adjustable height to accommodate flat tubes of different thicknesses.
[0015] The front clamping mechanism adopts a two-way clamping cylinder structure, with synchronous clamping from top to bottom, resulting in balanced clamping force and preventing uneven deformation of the flat tube. The height of the upper clamping cylinder is adjustable to accommodate flat tubes of different thicknesses and specifications, making it highly versatile.
[0016] In a further optimized design, the rear clamping mechanism includes a rear upper clamping cylinder and a lower support roller. The rear upper clamping cylinder and the lower support roller are respectively positioned above and below the flat tube. A pressure plate is fixedly connected to the piston rod end of the rear upper clamping cylinder. The rear upper clamping cylinder drives the pressure plate to move downward to press the flat tube onto the lower support roller.
[0017] The upper and lower clamping cylinders drive the pressure plate downwards, with the lower support rollers providing support. This simplifies the structure and reduces costs; the lower support rollers also serve as supports and guides for transport; the clamping action, combined with the lower support rollers, provides a large contact surface and reliable clamping.
[0018] The further optimized solution includes a cutting cylinder, a cutting blade, a blade holder, and a blade holder moving guide rail assembly. The tool holder moving guide rail assembly is fixedly mounted on the following slide mechanism, and its guide rail extends in a horizontal direction perpendicular to the flat tube conveying direction; The blade holder is slidably mounted on the blade holder moving guide rail assembly, the cutting blade is fixedly connected to one end of the blade holder, and the other end of the blade holder is fixedly connected to the piston rod of the cutting cylinder. The cutting cylinder is arranged horizontally, and its piston rod extends and retracts to drive the blade fixing seat to slide back and forth along the blade holder moving guide rail assembly, thereby driving the cutting blade to move back and forth in a horizontal direction perpendicular to the flat tube conveying direction to cut the flat tube.
[0019] The cutting cylinder is horizontally positioned, and the blade moves back and forth horizontally to complete the cut. The horizontal cutting method avoids the bending stress on the flat tube caused by vertical cutting, resulting in a smooth cut surface; the blade holder guide rail assembly ensures precise cutting trajectory and high-quality cut.
[0020] In a further optimized design, the cutting blade is a double-edged blade, and the cutting cylinder drives the cutting blade to reciprocate along the guide rail, enabling cutting to be performed in both the forward and reverse strokes.
[0021] The blade is sharpened on both sides, allowing for cutting in both forward and reverse directions. It completes two cuts in a single reciprocating stroke, increasing production efficiency; the blade life is twice that of a single-edged blade, reducing consumable costs.
[0022] In a further optimized design, the following slide mechanism is also equipped with a front guide mechanism and a rear guide mechanism; the front guide mechanism is located at the front end of the front pressing mechanism along the flat tube conveying direction, and the rear guide mechanism is integrated with the rear pressing mechanism; the front guide mechanism and the rear guide mechanism center and guide the conveyed flat tube.
[0023] The front and rear dual guides ensure the flat tube is centered and transported, avoiding misalignment that could cause the cut end face to tilt; the integrated design of the rear guide and rear clamping is compact and reduces space occupation.
[0024] The scheme is further optimized so that the front guide mechanism and the rear guide mechanism respectively include a guide mechanism bracket, an upper pressure roller, a lower support roller, two centering guide rollers, a centering adjustment guide rail assembly, and a centering screw assembly; The upper pressure roller and the lower support roller are rotatably mounted on the guide mechanism bracket, and their axes are both arranged in a horizontal direction perpendicular to the flat tube conveying direction; the lower support roller supports the flat tube, and the upper pressure roller is arranged above the flat tube and applies elastic pressure to the lower support roller through an elastic clamping component to press the flat tube between the upper pressure roller and the lower support roller; The centering adjustment guide rail assembly and the centering screw assembly are respectively arranged on the guide mechanism bracket in a horizontal direction perpendicular to the flat tube conveying direction; the two centering guide wheels are respectively arranged on both sides of the flat tube conveying direction and are slidably mounted on the centering adjustment guide rail assembly. The two centering guide wheels are respectively fixedly connected to the two screw nuts of the centering screw assembly. The centering screw assembly drives the two screw nuts to drive the two centering guide wheels to slide synchronously towards each other or away from each other along the centering adjustment guide rail assembly, so as to adjust the distance between the two centering guide wheels and make the flat tube center and transported.
[0025] The upper pressure roller elastically presses against the lower support roller to ensure stable conveying of the flat tube without jumping; the centering guide roller can be adjusted synchronously in opposite directions through the centering screw assembly to ensure that the flat tube is centered and does not deviate during conveying.
[0026] The design is further optimized by integrating the front clamping mechanism and the cutting mechanism into one unit. The front clamping mechanism and the cutting mechanism are mounted on the same mounting base, with no relative movement. This avoids relative displacement between the clamping and cutting processes during the cutting process, eliminating accuracy deviations caused by vibration; improves cut smoothness; and features a compact structure, reducing the space occupied by the equipment.
[0027] In a further optimized version, the following slide mechanism includes a movable slide, a slide guide rail assembly, a slide ball screw assembly, and a slide drive assembly. The slide rail assembly is fixedly mounted on the frame, and its rails extend along the flat tube conveying direction. The movable slide is slidably mounted on the slide guide assembly, and the clamping and positioning mechanism and the cutting mechanism are both fixedly mounted on the movable slide. The ball screw of the slide table assembly is rotatably mounted on the frame along the flat tube conveying direction, and its screw nut is fixedly connected to the movable slide table; The slide drive assembly is fixedly mounted on the frame, and its output end is connected to the ball screw assembly of the slide to drive it to rotate, thereby causing the ball screw nut of the slide ball screw assembly and the movable slide to slide back and forth along the guide rail of the slide guide assembly.
[0028] The slide drive assembly can use a servo motor as the drive source, with ball screw drive and guide rail guidance to form a precision linear motion module. Ball screw transmission offers high precision and fast response; linear guide rails have strong load-bearing capacity and smooth movement; combined with a servo drive, it can achieve precise synchronization with the production line speed.
[0029] In a further optimized version, the mechanical length-fixed detection mechanism also includes a length-fixed bracket, several support rollers, and a guide adjustment plate. The fixed-length bracket is fixedly installed at the rear end of the following slide table along the flat tube conveying direction, and the fixed-length adjusting guide rail is fixedly installed on the fixed-length bracket. Several of the aforementioned rollers are rotatably mounted on the fixed-length bracket. Each of the rollers is arranged at intervals along the flat tube conveying direction, and the rotation axis of each roller is perpendicular to the flat tube conveying direction, thus receiving and guiding the flat tube to move along the conveying direction. The guide adjustment plate is set on the fixed length bracket and located on both sides of the flat tube conveying direction to guide and limit the two side edges of the flat tube.
[0030] The fixed-length bracket provides a rigid installation reference, ensuring the relative position stability of the magnetic grating ruler and the sliding limit seat; the support roller reduces the frictional resistance of the flat tube conveying and avoids scratches; the guide plate prevents the flat tube from deviating and causing the trigger position deviation.
[0031] The mechanical fixed-length online following flat tube cutting machine of the present invention has the following technical advantages compared with the prior art: 1. Significantly improved cutting precision and extremely high stability: Relying on a purely mechanical rigid fixed-length structure, the problems of signal delay, interference, counting error and conveyor slippage in the electrical control system are completely solved. The cutting length accuracy is stable at ±0.2mm (product length ≤500mm), which is more than 80% higher than that of traditional equipment. Moreover, there is no precision decay during long-term continuous operation, and the product qualification rate is close to 100%.
[0032] 2. Significantly improved production efficiency: Enables full online tracking and continuous cutting without downtime, eliminating the need for intermittent profile positioning and start-stop equipment, increasing production line efficiency by 30% to 50%, and is compatible with high-speed extrusion molding production lines.
[0033] 3. High equipment stability and low maintenance cost: The core length-fixing mechanism is a pure mechanical structure without precision electrical sensors or counting elements, which greatly reduces the failure rate and avoids the problems of aging and failure of electrical components. Only routine mechanical maintenance is required in daily life, and the maintenance cost is reduced by more than 60%.
[0034] 4. Wide adaptability and convenient debugging: The cutting size can be quickly and finely adjusted by means of mechanical guide rail and high-precision magnetic scale. The debugging is simple and intuitive. It can be adapted to flat tube profiles of different widths, thicknesses and lengths, and is compatible with the processing of flat tubes of various materials. It has strong versatility.
[0035] 5. Excellent product processing quality: The synchronous following cutting + clamping positioning structure effectively avoids profile vibration and stretching deformation, resulting in a flat and burr-free cut surface with extremely high dimensional consistency, meeting the processing standards of high-end precision parts. Attached Figure Description
[0036] Figure 1 This is a perspective view of a specific embodiment of the mechanical fixed-length online following flat tube cutting machine of the present invention; Figure 2 yes Figure 1 A 3D view showing the area behind the concealed outer protective shield; Figure 3 yes Figure 2 3D view of the central entrance guide mechanism; Figure 4 yes Figure 2 A three-dimensional view of the front-center guide mechanism; Figure 5 yes Figure 2 A three-dimensional view of the front clamping mechanism and the cutting mechanism; Figure 6 yes Figure 5 A stereoscopic view from another perspective; Figure 7 yes Figure 6 Enlarged view of A in the middle; Figure 8 yes Figure 6 Rear view; Figure 9 yes Figure 2 A three-dimensional view of the middle and rear guiding mechanism and the rear clamping mechanism; Figure 10 yes Figure 9 A stereoscopic view from another perspective; Figure 11 yes Figure 2 A 3D view of the fixed-length testing mechanism of China Machinery. Figure 12 yes Figure 2 A three-dimensional view of the sliding mechanism.
[0037] In the diagram: Frame 100, Following slide mechanism 200, Moving slide 210, Slide guide rail assembly 220, Slide ball screw assembly 230, Slide drive assembly 240, Clamping and positioning mechanism 300, Front clamping mechanism 310, Front upper clamping cylinder 311, Front lower clamping cylinder 312, Clamping plate 313, Rear clamping mechanism 320, Rear upper clamping cylinder 321, Pressure plate 322, Cutting mechanism 400, Cutting cylinder 410, Cutting blade 420, Blade holder 430, Blade holder moving guide rail assembly 440, Mechanical positioning... 500 long detection mechanism, 510 fixed length adjustment guide rail, 520 magnetic grating ruler, 530 sliding limit seat, 540 detection element, 550 fixed length bracket, 560 support roller, 570 guide adjustment plate, 580 limit seat mechanical lock, 600 front guide mechanism, 610 guide mechanism bracket, 620 upper pressure roller, 630 lower support roller, 640 centering guide roller, 650 centering adjustment guide rail assembly, 660 centering screw assembly, 670 elastic clamping assembly, 700 rear guide mechanism, 800 protective cover, 900 entrance guide mechanism. Detailed Implementation
[0038] The present invention will now be described in further detail with reference to the embodiments shown in the accompanying drawings.
[0039] like Figures 1 to 12As shown, this invention provides a specific embodiment of a mechanical fixed-length online following flat tube cutting machine. Figure 1 and Figure 2 The middle arrow indicates the direction of flat tube delivery. Figure 2 A in the middle is a flat tube.
[0040] like Figure 1 and Figure 2 As shown, the mechanical fixed-length online following flat tube cutting machine of this embodiment includes a frame 100, on which a following slide mechanism 200 is slidably arranged along the flat tube conveying direction; the following slide mechanism 200 is provided with a pressing and positioning mechanism 300 for pressing the flat tube and a cutting mechanism 400 for cutting the flat tube; a mechanical fixed-length detection mechanism 500 is fixedly connected to the rear end of the following slide mechanism 200 along the flat tube conveying direction, and the mechanical fixed-length detection mechanism 500 moves synchronously with the following slide mechanism 200.
[0041] like Figure 11 As shown, the mechanical length-fixed detection mechanism 500 includes a length-fixed adjustment guide rail 510, a magnetic scale 520, and a sliding limit seat 530. The length-fixed adjustment guide rail 510 is arranged along the flat tube conveying direction, the magnetic scale 520 is arranged parallel to the length-fixed adjustment guide rail 510, and the sliding limit seat 530 is slidably mounted on the length-fixed adjustment guide rail 510. The sliding limit seat 530 is equipped with the magnetic head of the magnetic scale 520. When the equipment is adjusted, the sliding limit seat 530 moves to a preset position corresponding to the target cutting length according to the reading of the magnetic scale 520 and then locks itself. Specifically, it is locked by a limit seat mechanical lock 580. The sliding limit seat 530 is a gapless locking sliding seat. The sliding limit seat 530 is equipped with a detection element 540. When the front end of the flat tube is conveyed to the trigger detection element 540, a cutting trigger signal is generated. The following slide mechanism 200 responds to the cutting trigger signal and starts to move synchronously with the flat tube, the clamping and positioning mechanism 300 clamps the flat tube, and the cutting mechanism 400 cuts the flat tube. Specifically, the scale accuracy of the magnetic scale 520 can be selected as 0.01mm.
[0042] This mechanical fixed-length online following flat tube cutting machine uses a magnetic grating ruler 520 to preset the cutting length of the flat tube, ensuring dimensional accuracy through purely mechanical rigid length setting. The integrated structure of the purely mechanical fixed-length positioning mechanism and the synchronous online following cutting mechanism 400 eliminates the interference of traditional electronically controlled counting length setting, thus avoiding electrical counting errors. Through rigid mechanical limiting and precise transmission distance measurement, it achieves high-precision fixed-length cutting of flat tubes within ±0.2mm. Simultaneously, the cutting mechanism 400 moves synchronously with the profile conveyor speed throughout the entire process, achieving dynamic and uninterrupted cutting, balancing production efficiency and cutting accuracy. This ensures uninterrupted continuous production on the assembly line, significantly improves the cutting length accuracy of flat tubes, reduces equipment failure rate and maintenance costs, and meets the batch processing needs of high-end precision flat tubes.
[0043] like Figure 11As shown, the detection element 540 is a detection fiber optic probe. The detection fiber optic probe cross-detects the flat tube being transported. When the end face of the flat tube blocks the laser, a mechanical length confirmation signal is triggered and a cutting trigger signal is output synchronously.
[0044] The detection element 540 is a fiber optic probe and laser triggering method, which is a non-contact detection method. The laser is triggered when the flat tube end face blocks it. It has a fast response speed, no mechanical wear, and precise positioning without elastic offset, avoiding the positioning errors that may occur in contact detection.
[0045] like Figure 11 As shown, the mechanical fixed-length detection mechanism 500 also includes a fixed-length bracket 550, several rollers 560, and a guide adjustment plate 570. The fixed-length bracket 550 is fixedly installed at the rear end of the following slide table along the flat tube conveying direction, and the fixed-length adjustment guide rail 510 is fixedly installed on the fixed-length bracket 550. Several rollers 560 are rotatably installed on the fixed-length bracket 550, and each roller 560 is arranged at intervals along the flat tube conveying direction, and the rotation axis of each roller 560 is perpendicular to the flat tube conveying direction, receiving and guiding the flat tube to move along the conveying direction. The guide adjustment plate 570 is installed on the fixed-length bracket 550 and located on both sides of the flat tube conveying direction, guiding and limiting the two side edges of the flat tube.
[0046] The fixed-length bracket 550 provides a rigid installation reference to ensure the relative position stability of the magnetic grating ruler 520 and the sliding limit seat 530; the support roller 560 reduces the frictional resistance of the flat tube conveying and avoids scratches; the guide plate prevents the flat tube from running off-center, which would cause the trigger position to deviate.
[0047] like Figure 2 As shown, the clamping and positioning mechanism 300 includes a front clamping mechanism 310 and a rear clamping mechanism 320, which are respectively arranged at the front end and rear end of the cutting mechanism 400 along the flat tube conveying direction; the front clamping mechanism 310 and the rear clamping mechanism 320 clamp the flat tube in the vertical direction respectively.
[0048] The clamping and positioning mechanism 300 is divided into two groups, front and rear, located upstream and downstream of the cutting mechanism 400 respectively. It applies force in the up and down direction by clamping at two points at the front and rear. During cutting, both ends of the flat tube are fixed to prevent the profile from shaking or shifting during the cutting process, ensuring a flat cutting surface, and at the same time assisting in locking the fixed length dimension.
[0049] like Figure 5 and Figure 8 As shown, the front clamping mechanism 310 includes a front upper clamping cylinder 311 and a front lower clamping cylinder 312. The front upper clamping cylinder 311 and the front lower clamping cylinder 312 are respectively arranged opposite each other above and below the flat tube. The piston rod ends of the front upper clamping cylinder 311 and the front lower clamping cylinder 312 are respectively fixedly connected to clamping plates 313. The two clamping plates 313 are arranged facing each other. The front upper clamping cylinder 311 and the front lower clamping cylinder 312 simultaneously drive the two clamping plates 313 to move towards each other to clamp the flat tube. The lower front clamping cylinder 312 has a fixed cylinder body, while the upper front clamping cylinder 311 has an adjustable height to accommodate flat tubes of different thicknesses.
[0050] The front clamping mechanism 310 adopts a two-way clamping cylinder structure, with synchronous clamping from top to bottom, resulting in balanced clamping force and preventing uneven deformation of the flat tube. The height of the upper clamping cylinder is adjustable, making it suitable for flat tubes of different thicknesses and specifications, and highly versatile.
[0051] like Figure 9 and Figure 10 As shown, the rear clamping mechanism 320 includes a rear upper clamping cylinder 321 and a lower support roller 630. The rear upper clamping cylinder 321 and the lower support roller 630 are respectively arranged opposite to each other above and below the flat tube. The piston rod end of the rear upper clamping cylinder 321 is fixedly connected to a pressure plate 322. The rear upper clamping cylinder 321 drives the pressure plate 322 to move downward to clamp the flat tube onto the lower support roller 630.
[0052] The upper and lower clamping cylinder 321 drives the pressure plate 322 to press down, with the lower support roller 630 serving as support. This simplifies the structure and reduces costs; the lower support roller 630 also serves as a support and conveying guide; the clamping action with the lower support roller 630 provides a large contact surface and reliable clamping.
[0053] like Figure 6 and Figure 7 As shown, the cutting mechanism 400 includes a cutting cylinder 410, a cutting blade 420, a blade holder 430, and a blade holder moving guide rail assembly 440. The blade holder moving guide rail assembly 440 is fixedly mounted on the following slide mechanism 200, and its guide rail extends in a horizontal direction perpendicular to the flat tube conveying direction. The blade holder 430 is slidably mounted on the blade holder moving guide rail assembly 440. The cutting blade 420 is fixedly connected to one end of the blade holder 430, and the other end of the blade holder 430 is fixedly connected to the piston rod of the cutting cylinder 410. The cutting cylinder 410 is horizontally arranged, and its piston rod extends and retracts to drive the blade holder 430 to slide back and forth along the blade holder moving guide rail assembly 440, thereby driving the cutting blade 420 to move back and forth in a horizontal direction perpendicular to the flat tube conveying direction to cut the flat tube.
[0054] The cutting cylinder 410 is horizontally arranged, and the blade moves back and forth horizontally to complete the cutting. The horizontal cutting method avoids the bending stress on the flat tube caused by vertical cutting, and the cut surface is flat; the blade holder guide rail assembly ensures precise cutting trajectory and high cut quality.
[0055] like Figure 7 As shown, the cutting blade 420 is a double-edged blade. The cutting cylinder 410 drives the cutting blade 420 to reciprocate along the guide rail, and cutting can be performed in both the forward and reverse strokes.
[0056] The blade is sharpened on both sides, allowing for cutting in both forward and reverse directions. It completes two cuts in a single reciprocating stroke, increasing production efficiency; the blade life is twice that of a single-edged blade, reducing consumable costs.
[0057] like Figure 2 As shown, the following slide mechanism 200 is also provided with a front guide mechanism 600 and a rear guide mechanism 700; the front guide mechanism 600 is set at the front end of the front pressing mechanism 310 along the flat tube conveying direction, and the rear guide mechanism 700 is integrated with the rear pressing mechanism 320; the front guide mechanism 600 and the rear guide mechanism 700 center and guide the conveyed flat tube.
[0058] The front and rear dual guides ensure the flat tube is centered and transported, avoiding misalignment that could cause the cut end face to tilt; the integrated design of the rear guide and rear clamping is compact and reduces space occupation.
[0059] like Figure 4 and Figure 10 As shown, the front guide mechanism 600 and the rear guide mechanism 700 respectively include a guide mechanism bracket 610, an upper pressure roller 620, a lower support roller 630, two centering guide rollers 640, a centering adjustment guide rail assembly 650, and a centering screw assembly 660. The upper pressure roller 620 and the lower support roller 630 are rotatably mounted on the guide mechanism bracket 610, and their axial directions are both set in a horizontal direction perpendicular to the flat tube conveying direction. The lower support roller 630 supports the flat tube, and the upper pressure roller 620 is set above the flat tube and elastically presses down on the lower support roller 630 through the elastic clamping assembly 670 to press the flat tube between the upper pressure roller 620 and the lower support roller 630.
[0060] like Figure 4 As shown, the elastic clamping component 670 is a compression spring. One end of the compression spring abuts against the guide mechanism bracket 610, and the other end abuts against the wheel axle of the upper pressure roller 620, driving the upper pressure roller 620 to elastically clamp the flat tube towards the lower support roller 630.
[0061] like Figure 4 and Figure 10As shown, the centering adjustment guide rail assembly 650 and the centering screw assembly 660 are respectively mounted on the guide mechanism bracket 610 in a horizontal direction perpendicular to the flat tube conveying direction; two centering guide wheels 640 are respectively located on both sides of the flat tube conveying direction and are slidably mounted on the centering adjustment guide rail assembly 650; the two centering guide wheels 640 are respectively fixedly connected to the two screw nuts of the centering screw assembly 660, and the centering screw assembly 660 drives the two screw nuts to drive the two centering guide wheels 640 to slide synchronously towards each other or away from each other along the centering adjustment guide rail assembly 650, so as to adjust the distance between the two centering guide wheels 640 and make the flat tube conveyed in a centered manner. Specifically, the centering screw assembly 660 includes a positive and negative threaded screw, and the positive and negative threaded screw is provided with a first thread section and a second thread section with opposite directions of rotation, and the two screw nuts are respectively threadedly connected to the first thread section and the second thread section.
[0062] The upper pressure roller 620 elastically presses and supports the lower support roller 630 to ensure stable conveying of the flat tube without jumping; the centering guide roller 640 can be adjusted synchronously in opposite directions through the centering screw assembly 660 to ensure that the flat tube is centered and does not deviate during conveying.
[0063] like Figure 5 and Figure 6 As shown, the front clamping mechanism 310 and the cutting mechanism 400 are integrated into one unit. The front clamping mechanism 310 and the cutting mechanism 400 are mounted on the same mounting base, with no relative movement. This avoids relative displacement between clamping and cutting at the moment of cutting, eliminating accuracy deviations caused by vibration; improves the flatness of the cut; and has a compact structure, reducing the space occupied by the equipment.
[0064] like Figure 12 As shown, the following slide mechanism 200 includes a movable slide 210, a slide guide rail assembly 220, a slide ball screw assembly 230, and a slide drive assembly 240. The slide guide rail assembly 220 is fixedly mounted on the frame 100, and its guide rail extends along the flat tube conveying direction. The movable slide 210 is slidably mounted on the slide guide rail assembly 220, and the clamping and positioning mechanism 300 and the cutting mechanism 400 are both fixedly mounted on the movable slide 210. The screw of the slide ball screw assembly 230 is rotatably mounted on the frame 100 along the flat tube conveying direction, and its screw nut is fixedly connected to the movable slide 210. The slide drive assembly 240 is fixedly mounted on the frame 100, and its output end is connected to the screw drive of the slide ball screw assembly 230, driving it to rotate and causing the screw nut of the slide ball screw assembly 230 and the movable slide 210 to slide back and forth along the guide rail of the slide guide rail assembly 220.
[0065] The slide drive assembly 240 can use a servo motor as the drive source, with ball screw drive and guide rail guidance to form a precision linear motion module. The ball screw transmission has high precision and fast response; the linear guide rail has strong load-bearing capacity and smooth movement; together with the servo drive, it can achieve precise synchronization with the production line speed.
[0066] like Figure 2 and Figure 3 As shown, the mechanical fixed-length online following flat tube cutting machine of this embodiment also includes an inlet guide mechanism 900, the bottom of which is fixed on the frame 100 and is arranged at the front end of the following slide mechanism 200 along the flat tube conveying direction. The inlet guide mechanism 900 includes a guide mechanism bracket 610, an upper pressure roller 620, a lower support roller 630, and an elastic clamping assembly 670; the upper pressure roller 620 and the lower support roller 630 are respectively rotatably mounted on the guide mechanism bracket 610, and their axial directions are both arranged in a horizontal direction perpendicular to the flat tube conveying direction; the lower support roller 630 supports the flat tube, and the upper pressure roller 620 is arranged above the flat tube and elastically presses down towards the lower support roller 630 through the elastic clamping assembly 670 to press the flat tube between the upper pressure roller 620 and the lower support roller 630. The elastic clamping component 670 is a compression spring. One end of the compression spring abuts against the guide mechanism bracket 610, and the other end abuts against the wheel axle of the upper pressure roller 620, driving the upper pressure roller 620 to elastically clamp the flat tube towards the lower support roller 630.
[0067] like Figure 1 As shown, the mechanical fixed-length online following flat tube cutting machine of this embodiment also includes a protective cover 800, which is set on the upper part of the frame 100 to cover the inlet guide mechanism 900, the following slide mechanism 200, the clamping and positioning mechanism 300, the cutting mechanism 400, the front guide mechanism 600 and the rear guide mechanism 700, to ensure the safety of equipment operation.
[0068] The working process of the mechanical fixed-length online following flat tube cutting machine of the present invention is as follows: The flat tube enters the flat tube cutting machine through the traction machine at the front end of the equipment. It first passes through the inlet guide mechanism 900, the front guide mechanism 600, the front clamping mechanism 310 and the cutting mechanism 400, the rear guide mechanism 700 and the rear clamping mechanism 320 in sequence, and then enters the mechanical fixed length detection mechanism 500.
[0069] When the flat tube reaches the length positioning signal (i.e., the position set by the sliding limit seat 530), the detection fiber optic probe is triggered and outputs a cutting trigger signal. After receiving the signal, the servo motor of the following slide mechanism 200 starts following, and the following slide mechanism 200 moves synchronously with the flat tube. The clamping and positioning mechanism 300 quickly clamps the flat tube profile, and the cutting mechanism 400 starts to complete the high-precision cutting.
[0070] After cutting, the clamping and positioning mechanism 300 is released, and the machine returns to its original position along with the sliding table mechanism 200, completing one cycle and waiting for the next fixed-length signal output. The entire process requires no machine downtime, enabling continuous online processing.
[0071] The mechanical fixed-length online following flat tube cutting machine provided by this invention achieves precise fixed-length control through pure mechanical structure linkage, eliminating the interference of electrical counting errors. Combined with the synchronous following cutting structure, it significantly improves the cutting length accuracy of flat tubes while ensuring uninterrupted continuous production on the production line, reduces equipment failure rate and maintenance costs, and meets the batch processing needs of high-end precision flat tubes.
[0072] In summary, as described in the specification and figures, this invention has been manufactured into actual samples and tested multiple times. The test results demonstrate that the invention achieves its intended purpose, and its practicality is beyond doubt. The embodiments described above are merely for illustrative purposes and are not intended to limit the scope of the invention. Any equivalent embodiments made by those with common knowledge in the relevant technical field, utilizing the technical content disclosed in this invention without departing from the scope of the technical features and similar features of this invention, based on partial modifications or alterations, are within the protection scope of this invention.
Claims
1. A mechanical fixed-length online following flat tube cutting machine, comprising a frame (100), characterized in that: A following slide mechanism (200) is slidably provided on the frame (100) along the flat tube conveying direction; The following slide mechanism (200) is provided with a pressing and positioning mechanism (300) for pressing the flat tube and a cutting mechanism (400) for cutting the flat tube. The following slide mechanism (200) is fixedly connected to a mechanical length detection mechanism (500) at the rear end along the flat tube conveying direction. The mechanical length detection mechanism (500) moves synchronously with the following slide mechanism (200). The mechanical length detection mechanism (500) includes a length adjustment guide rail (510), a magnetic scale (520), and a sliding limit seat (530). The fixed-length adjustment guide rail (510) is arranged along the flat tube conveying direction, the magnetic grating ruler (520) is arranged parallel to the fixed-length adjustment guide rail (510), the sliding limit seat (530) is slidably arranged on the fixed-length adjustment guide rail (510), and the magnetic head of the magnetic grating ruler (520) is provided on the sliding limit seat (530). The sliding limit seat (530) is locked after moving to a preset position corresponding to the target cutting length according to the reading of the magnetic scale (520) during equipment adjustment; The sliding limit seat (530) is provided with a detection element (540). When the front end of the flat tube is delivered to trigger the detection element (540), a cutting trigger signal is generated. The following slide mechanism (200) responds to the cutting trigger signal to start moving synchronously with the flat tube, the pressing and positioning mechanism (300) presses the flat tube, and the cutting mechanism (400) cuts the flat tube.
2. The mechanical fixed-length online following flat tube cutting machine according to claim 1, characterized in that, The detection element (540) is a detection fiber optic probe. The detection fiber optic probe cross-detects the flat tube being transported. When the end face of the flat tube blocks the laser, a mechanical length confirmation signal is triggered and a cutting trigger signal is output synchronously.
3. The mechanical fixed-length online following flat tube cutting machine according to claim 1, characterized in that, The clamping and positioning mechanism (300) includes a front clamping mechanism (310) and a rear clamping mechanism (320), which are respectively arranged at the front end and rear end of the cutting mechanism (400) along the flat tube conveying direction; the front clamping mechanism (310) and the rear clamping mechanism (320) clamp the flat tube in the up and down directions respectively.
4. The mechanical fixed-length online following flat tube cutting machine according to claim 3, characterized in that, The front clamping mechanism (310) includes a front upper clamping cylinder (311) and a front lower clamping cylinder (312). The front upper clamping cylinder (311) and the front lower clamping cylinder (312) are respectively arranged opposite to each other above and below the flat tube. The piston rod ends of the front upper clamping cylinder (311) and the front lower clamping cylinder (312) are respectively fixedly connected to clamping plates (313). The two clamping plates (313) are arranged facing each other. The front upper clamping cylinder (311) and the front lower clamping cylinder (312) act simultaneously to drive the two clamping plates (313) to move towards each other to clamp the flat tube. The lower front pressing cylinder (312) has a fixed cylinder body, while the upper front pressing cylinder (311) has an adjustable height to accommodate flat tubes of different thicknesses.
5. The mechanical fixed-length online following flat tube cutting machine according to claim 3, characterized in that, The rear pressing mechanism (320) includes a rear upper pressing cylinder (321) and a lower support roller (630). The rear upper pressing cylinder (321) and the lower support roller (630) are respectively arranged opposite to each other above and below the flat tube. The piston rod end of the rear upper pressing cylinder (321) is fixedly connected to a pressure plate (322). The rear upper pressing cylinder (321) drives the pressure plate (322) to move downward to press the flat tube onto the lower support roller (630).
6. The mechanical fixed-length online following flat tube cutting machine according to claim 1, characterized in that, The cutting mechanism (400) includes a cutting cylinder (410), a cutting blade (420), a blade holder (430), and a blade holder moving guide rail assembly (440). The tool holder moving guide rail assembly (440) is fixedly mounted on the following slide mechanism (200), and its guide rail extends in a horizontal direction perpendicular to the flat tube conveying direction; The blade holder (430) is slidably disposed on the blade holder moving guide rail assembly (440), the cutting blade (420) is fixedly connected to one end of the blade holder (430), and the other end of the blade holder (430) is fixedly connected to the piston rod of the cutting cylinder (410). The cutting cylinder (410) is arranged horizontally, and its piston rod extends and retracts to drive the blade fixing seat (430) to slide back and forth along the blade holder moving guide rail assembly (440), thereby driving the cutting blade (420) to move back and forth in a horizontal direction perpendicular to the flat tube conveying direction to cut the flat tube.
7. The mechanical fixed-length online following flat tube cutting machine according to claim 6, characterized in that, The cutting blade (420) is a double-edged blade. The cutting cylinder (410) drives the cutting blade (420) to reciprocate along the guide rail, and cutting can be performed in both the forward and reverse strokes.
8. The mechanical fixed-length online following flat tube cutting machine according to claim 3, characterized in that, The following slide mechanism (200) is also provided with a front guide mechanism (600) and a rear guide mechanism (700); the front guide mechanism (600) is arranged at the front end of the front pressing mechanism (310) along the flat tube conveying direction, and the rear guide mechanism (700) is integrated with the rear pressing mechanism (320); the front guide mechanism (600) and the rear guide mechanism (700) center and guide the conveyed flat tube.
9. The mechanical fixed-length online following flat tube cutting machine according to claim 8, characterized in that, The front guide mechanism (600) and the rear guide mechanism (700) respectively include a guide mechanism bracket (610), an upper pressure roller (620), a lower support roller (630), two centering guide rollers (640), a centering adjustment guide rail assembly (650), and a centering screw assembly (660). The upper pressure roller (620) and the lower support roller (630) are rotatably mounted on the guide mechanism bracket (610), and their axial directions are both arranged in a horizontal direction perpendicular to the flat tube conveying direction; the lower support roller (630) supports the flat tube, and the upper pressure roller (620) is arranged above the flat tube and applies elastic pressure to the lower support roller (630) through the elastic pressing assembly (670) to press the flat tube between the upper pressure roller (620) and the lower support roller (630); The centering adjustment guide rail assembly (650) and the centering screw assembly (660) are respectively arranged on the guide mechanism bracket (610) in a horizontal direction perpendicular to the flat tube conveying direction; the two centering guide wheels (640) are respectively arranged on the two sides of the flat tube conveying direction and are slidably installed on the centering adjustment guide rail assembly (650). The two centering guide wheels (640) are respectively fixedly connected to the two screw nuts of the centering screw assembly (660). The centering screw assembly (660) drives the two screw nuts to drive the two centering guide wheels (640) to slide synchronously towards each other or away from each other along the centering adjustment guide rail assembly (650) to adjust the distance between the two centering guide wheels (640) so that the flat tube is centered and transported.
10. The mechanical fixed-length online following flat tube cutting machine according to claim 3, characterized in that, The front clamping mechanism (310) and the cutting mechanism (400) are integrated into one unit.
11. The mechanical fixed-length online following flat tube cutting machine according to claim 1, characterized in that, The following slide mechanism (200) includes a movable slide (210), a slide guide rail assembly (220), a slide ball screw assembly (230), and a slide drive assembly (240). The slide rail assembly (220) is fixedly mounted on the frame (100), and its rails extend along the flat tube conveying direction; The movable slide (210) is slidably mounted on the slide guide assembly (220), and the clamping and positioning mechanism (300) and the cutting mechanism (400) are both fixedly mounted on the movable slide (210); The ball screw of the slide table ball screw assembly (230) is rotatably mounted on the frame (100) along the flat tube conveying direction, and its screw nut is fixedly connected to the movable slide table (210). The slide drive assembly (240) is fixedly mounted on the frame (100), and its output end is connected to the screw drive of the slide ball screw assembly (230) to drive it to rotate, thereby causing the screw nut of the slide ball screw assembly (230) and the movable slide (210) to slide back and forth along the guide rail of the slide guide rail assembly (220).
12. The mechanical fixed-length online following flat tube cutting machine according to claim 1, characterized in that, The mechanical fixed-length detection mechanism (500) also includes a fixed-length bracket (550), several support rollers (560), and a guide adjustment plate (570). The fixed-length bracket (550) is fixedly installed at the rear end of the following slide table along the flat tube conveying direction, and the fixed-length adjusting guide rail (510) is fixedly installed on the fixed-length bracket (550). Several of the aforementioned rollers (560) are rotatably mounted on the fixed-length bracket (550). Each of the rollers (560) is arranged at intervals along the flat tube conveying direction, and the rotation axis of each roller (560) is perpendicular to the flat tube conveying direction, so as to receive and guide the flat tube to move along the conveying direction. The guide adjustment plate (570) is disposed on the fixed length bracket (550) and located on both sides of the flat tube conveying direction to guide and limit the two sides of the flat tube.