A feeding and discharging pipe cutting machine

Abstract

This invention discloses a tube cutting machine for loading and unloading, relating to the field of laser cutting technology. The equipment includes a base frame, multiple sets of chucks, a laser cutting mechanism, a drive mechanism, a loading structure, and multiple receiving structures. The base frame is welded from square tubing, forming an internal cavity for through-wire routing and opening wire passage holes. The loading frame has a frame structure with wire passage holes on the side plates and wire collection holes on the rear plate, forming an internal cavity for wire routing that communicates with the cavity of the base frame. The receiving structures adopt a double-plate linkage lifting design, combined with a flip-up plate to achieve automatic unloading. This invention eliminates external wire troughs, achieving fully concealed internal arrangement of air pipes and wire harnesses, resulting in a compact structure, good protection, and convenient operation and maintenance. Through multi-chuck collaboration and automated loading and unloading linkage, it can efficiently cut various specifications of pipes, solving problems such as messy wiring and low space utilization in existing equipment, and improving operational stability and processing efficiency.

Description

Technical Field

[0001] This invention relates to the field of laser cutting, and in particular to a tube cutting machine for loading and unloading materials. Background Technology

[0002] Laser tube cutting machines, with their advantages of high cutting precision, fast processing efficiency, good cross-sectional quality, and wide compatibility with various pipe specifications, have been widely used in cutting operations such as steel structures and pipes. For laser tube cutting machines with loading and unloading functions, they mainly consist of a base frame, a loading structure, and a receiving structure. The base frame is also equipped with multiple chucks, laser cutting heads, multiple drive mechanisms, and control systems. However, as the equipment becomes more functional, the wiring and routing become more complex. Current technology often uses external cable trays, where cable trays are additionally installed outside the base frame and loading structure to lay and fix air pipes and wire bundles inside, achieving a neat arrangement of these components. While this external cable tray method achieves basic wiring functions, centrally storing scattered wire bundles and air pipes and avoiding exposed and messy wiring, and to some extent reducing the risk of cross-linking wear and accidental breakage, it still has many substantial shortcomings in actual production applications and is difficult to adapt to the high-frequency, continuous, and high-precision processing requirements of automated loading and unloading laser tube cutting machines.

[0003] Firstly, external cable trays are mostly independent, assembled structures, fixed to the outside of the equipment frame with bolts, clips, and other accessories. The exposed structure occupies external installation space, resulting in a bulky overall size. This not only increases the difficulty of transportation and hoisting but also occupies valuable workshop production area. Secondly, because the external cable trays protrude from the frame surface, they are highly susceptible to scraping and collisions with pipes, tooling, or operators during material loading / unloading, handling, equipment debugging, and personnel inspection. This can easily cause the cable trays to deform or detach, leading to bending and damage to internal wiring harnesses and air pipes, resulting in poor circuit contact and unstable air pressure supply. Furthermore, damaged cable trays lose their protective function, allowing external dust, metal shavings, and cutting debris to easily accumulate inside, increasing the frequency of equipment downtime for maintenance and reducing production continuity. In addition, the exposed installation of external cable trays compromises the integrity and aesthetics of the overall equipment structure. Oil and metal shavings easily accumulate in the gaps between cable tray joints and exposed fasteners, making cleaning difficult and resulting in a dirty and unsightly appearance after long-term use.

[0004] In summary, the external cable tray wiring structure used in existing laser tube cutting machines has many technical drawbacks, such as low space utilization, poor protection, and inconvenient operation and maintenance, making it difficult to meet the needs of modern automated tube processing and production that requires high efficiency, precision, and continuous operation. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this invention is to provide a pipe cutting machine with optimized structure, neat wiring, strong protection and convenient operation and maintenance.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A pipe cutting machine includes a base frame, a first chuck, a second chuck, and a third chuck mounted on the base frame, a laser cutting mechanism located in the cutting area of ​​the base frame and between the second and third chucks, a first drive mechanism for reciprocating the first chuck along the length of the base frame, a second drive mechanism for reciprocating the second chuck along the length of the base frame, a third drive mechanism for reciprocating the third chuck along the length of the base frame, a loading structure located in the loading area of ​​the base frame, and multiple receiving structures located in the unloading area of ​​the base frame. Both the loading and unloading areas of the base frame have multiple wire-passing holes. The loading structure includes multiple spaced-apart loading racks, a chain conveyor mechanism rotatably mounted on the loading racks, spaced-apart limiting blocks mounted on the chain conveyors, a chain drive mechanism for synchronously driving the multiple chain conveyors to rotate, a pipe clamping mechanism located on one side of the loading racks, and a clamping drive mechanism for driving the pipe clamping mechanism to reciprocate along the length of the loading racks. The mechanism includes: a storage bay formed between adjacent limiting blocks; multiple wiring holes on each of the multiple feeding racks, and wiring collection holes on the side walls of the multiple feeding racks facing the base frame; wiring cavities formed inside the base frame and the multiple feeding racks, and the wiring cavities between the base frame and the feeding racks are interconnected through corresponding wiring holes and wiring collection holes; each of the multiple receiving structures includes a receiving base frame, a first lifting plate disposed on the receiving base frame; a second lifting plate slidably connected to the first lifting plate; a transmission component fixedly connected at one end to the receiving base frame and at the other end to the second lifting plate; a guide component disposed on the first lifting plate; a receiving lifting drive mechanism for driving the first lifting plate to rise or fall; a flip plate rotatably connected to the second lifting plate; and a receiving drive mechanism disposed on the second lifting plate for discharging material when the flip plate is tilted, and supporting and / or receiving material when the flip plate is horizontal; the middle part of the transmission component is wound around the guide component, so that when the first lifting plate rises or falls, the second lifting plate rises or falls synchronously.

[0007] Beneficial effects: This invention provides a pipe cutting machine with loading and unloading. By designing the base frame and loading structure as built-in wiring cavities, the internal space of the base frame square tube and the loading frame cavity form a through-type hidden channel. Simultaneously, with a double-plate linkage and flip-up receiving structure, it abandons the traditional external cable tray wiring method, achieving a fully concealed internal arrangement of air pipes and wire harnesses. This results in advantages such as compact structure, small size, neat wiring, reliable protection, and convenient operation and maintenance. Multiple chucks and a drive mechanism enable synchronous and precise feeding. Combined with a laser cutting mechanism capable of ±45° bevel cutting, and linked with chain-type loading and double-plate lifting unloading, it forms a fully automated operation. It can stably and efficiently process pipes with diameters ≤520mm and lengths ≤12500mm, adapting to the production needs of various pipe specifications. It effectively solves the defects of existing equipment such as low space utilization, poor protection, and inconvenient maintenance, improving equipment operational stability, processing efficiency, and service life. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of a pipe cutting machine for loading and unloading. Figure 2 This is a schematic diagram of the base frame structure; Figure 3 A partial structural diagram of the base frame Figure 1 ; Figure 4 This is a schematic diagram of the laser cutting mechanism; Figure 5 A partial structural diagram of the base frame Figure 2 ; Figure 6 Schematic diagram of the feeding structure Figure 1 ; Figure 7 Schematic diagram of the feeding structure Figure 2 ; Figure 8 Here are structural diagrams of two of the feeding structures; Figure 9 This is a schematic diagram of one of the feeding structures; Figure 10 This is a schematic diagram of the material receiving sensing mechanism; Figure 11 This is a schematic diagram of the material receiving structure; Figure 12 A structural diagram showing the material receiving structure behind the flip-up plate; Figure 13 This is a cross-sectional view that hides the material receiving structure behind the flip-up plate; Figure 14 To conceal the explosion of the material receiving structure behind the flip plate and receiving base frame Figure 1 ; Figure 15To conceal the explosion of the material receiving structure behind the flip plate and receiving base frame Figure 2 ; Figure 16 This is a structural diagram of multiple receiving structures and a U-shaped storage rack.

[0009] Explanation of key component symbols: A1-Base frame, A11-First square tube, A111-Quick release part, A12-Second square tube, A121-Exhaust vent, A122-Exhaust pipe, A123-Exhaust box, A124-Guide rail, A125-Slider, A126-Lubricating oil pump, A127-Oil collection tank, A13-Third square tube, A14-Fourth square tube, A141-Third cable hole, A15-Fifth square tube, A151-First cable hole, A152-Second cable hole, A16-Sixth square tube, A17-Seventh square tube, A17 1-Fourth wire pass hole, A18-Eighth square tube, A181-Fifth wire pass hole, A191-Reinforced oblique square tube, A192-First sealing plate, A193-Second sealing plate, A194-Third sealing plate, A211-First chuck, A212-First drive mechanism, A221-Second chuck, A222-Second drive mechanism, A223-Protective plate, A231-Third chuck, A232-Third drive mechanism, A241-Fourth chuck, A242-Fourth drive mechanism, A3-Laser cutting mechanism; B - Feeding structure, B1 - Feeding rack, B11 - Side plate, B111 - Upper side plate, B112 - Lower side plate, B1121 - Cable routing hole, B113 - Feeding bayonet, B114 - Support square tube, B12 - Support plate, B13 - Front end plate, B14 - Rear end plate, B141 - Cable routing convergence hole, B15 - Base plate, B16 - "L" shaped placement plate, B17 - Connecting square tube, B2 - Chain conveyor mechanism, B21 - Material limiting block, B3 - Chain drive mechanism, B4 - Pipe clamping mechanism, B41 - Transverse plate B42-Lifting plate, B43-Lifting drive mechanism, B44-Clamping cylinder, B45-Pull block, B46-Clamping block, B47-Clamping drag chain, B5-Clamping drive mechanism, B51-Clamping drive motor, B52-Clamping rack, B6-Material arrival sensing mechanism, B61-Material arrival sensor, B62-Rotating rod, B63-Counterweight bracket, B631-First mounting hole, B632-Second mounting hole, B64-Counterweight block, B641-Oval hole, B65-Material arrival pressure plate, B66-Limiting component; C- Receiving structure, C1- Receiving base frame, C11- Base plate, C12- Vertical square tube, C121- Operating hole, C13- Vertical plate, C14- Mounting plate, C2- First lifting plate, C21- First receiving guide rail, C22- First receiving slider, C23- Second receiving guide rail, C24- Second receiving slider, C25- First anti-collision block, C26- Anti-collision rubber, C3- Second lifting plate, C31- Position sensor, C32- Sensing plate, C4- Transmission components, C41-adjusting block, C42-adjusting rod, C43-adjusting nut, C5-guide component, C51-bearing seat, C52-guide sprocket, C53-guide connecting shaft, C6-material receiving lifting drive mechanism, C61-material receiving motor, C62-material receiving gear, C63-material receiving rack, C7-flip plate, C71-second anti-collision block, C72-guide roller, C8-material receiving drive mechanism, C91-U-shaped storage rack, C92-short material storage hopper. Detailed Implementation

[0010] This invention provides a pipe cutting machine for loading and unloading. To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining this invention and are not intended to limit the scope of protection of this invention.

[0011] Please see Figures 1-4 This invention provides a pipe cutting machine for loading and unloading, including a base frame A1, a first chuck A211, a second chuck A221, and a third chuck A231 disposed on the base frame A1, a laser cutting mechanism A3 disposed in the cutting area of ​​the base frame A1 and located between the second chuck A221 and the third chuck A231, a first drive mechanism A212 for reciprocating the first chuck A211 along the length direction of the base frame A1, a second drive mechanism A222 for reciprocating the second chuck A221 along the length direction of the base frame A1, a third drive mechanism A232 for reciprocating the third chuck A231 along the length direction of the base frame A1, a loading structure B disposed in the loading area of ​​the base frame A1, and multiple receiving structures C disposed in the unloading area of ​​the base frame A1. Furthermore, a fourth chuck A241 and a fourth drive mechanism A242 for reciprocating the fourth chuck A241 along the length direction of the base frame A1 can be provided according to the processing length requirements of the pipe being cut.

[0012] Please see Figure 4The A3 laser cutting mechanism's cutting head can also achieve ±45° bevel cutting, enriching the pipe processing styles and effectively broadening the processing application range. This loading and unloading pipe cutting machine is assembled using the optimized base frame A1, achieving synchronous and coordinated displacement through multiple chucks and corresponding drive mechanisms, enabling stable clamping and conveying of pipes of different specifications. The machine can handle the cutting of various pipes with diameters ≤520mm and lengths ≤12500mm, adapting to various pipe diameters and ultra-long pipe processing conditions. It balances processing diversity and large-size pipe processing capabilities, improving equipment versatility and practical processing applicability.

[0013] The loading and unloading areas of the base frame A1 are both equipped with multiple wire guide holes; please refer to Figures 6-9 The feeding structure B includes multiple spaced-apart feeding racks B1, a chain conveyor mechanism B2 rotatably mounted on the feeding racks B1, spaced-apart limiting blocks B21 mounted on the chain conveyor mechanism B2, a chain drive mechanism B3 for synchronously driving the multiple chain conveyor mechanisms B2 to rotate, a pipe clamping mechanism B4 mounted on one side of the feeding racks B1, and a clamping drive mechanism B4 for driving the pipe clamping mechanism B4 to reciprocate along the length of the feeding racks B1. 5; A storage bay is formed between adjacent limiting blocks B21; Multiple cable routing holes B1121 are provided on each of the multiple feeding racks B1, and cable routing collection holes B141 are provided on the side walls of the multiple feeding racks B1 facing the base frame A1; Cable routing cavities are formed inside the base frame A1 and inside the multiple feeding racks B1, and the cable routing cavities between the base frame A1 and the feeding racks B1 are interconnected through the corresponding cable routing holes B1121 and cable routing collection holes B141.

[0014] Please see Figures 11-15 Each of the multiple receiving structures C includes a receiving base C1, a first lifting plate C2 disposed on the receiving base C1, a second lifting plate C3 slidably connected to the first lifting plate C2, a transmission component C4 fixedly connected at one end to the receiving base C1 and at the other end to the second lifting plate C3, a guide component C5 disposed on the first lifting plate C2, a receiving lifting drive mechanism C6 for driving the first lifting plate C2 to rise or fall, a flip plate C7 rotatably connected to the second lifting plate C3, and a receiving drive mechanism C8 disposed on the second lifting plate C3 for discharging material when the flip plate C7 is tilted, and supporting and / or receiving material when it is horizontal; the middle part of the transmission component C4 is wound around the guide component C5, so that when the first lifting plate C2 rises or falls, the second lifting plate C3 rises or falls synchronously.

[0015] When this pipe cutting machine is in operation, the entire machine is supported by a base frame A1, which is welded from square tubing. An internal through-type cable routing cavity is formed, and cable passage holes are opened in the loading and unloading areas to allow each air pipe and wire harness to be concealed and internally arranged, achieving neat cable routing, reliable protection, and no occupation of external space. The base frame A1 is sequentially equipped with a first chuck A211, a second chuck A221, a third chuck A231, and an optional fourth chuck A241. Each chuck is driven by a corresponding drive mechanism to move back and forth along the length of the base frame A1. In conjunction with the laser cutting mechanism A3 located between the second and third chucks, the machine completes the precise clamping, conveying, and cutting of the pipe. The laser cutting mechanism A3 can achieve ±45° bevel cutting, adapting to various processing needs.

[0016] When the feeding structure B is in operation, multiple feeding racks B1 are arranged at intervals, and the chain conveyor mechanism B2 circulates on the feeding racks B1. Material limiting blocks B21 are arranged at intervals to form storage bays, enabling orderly storage and transportation of pipes. After the pipes are transported to the designated position by the chain conveyor mechanism B2, the pipe clamping mechanism B4 moves laterally under the drive of the clamping drive mechanism B5 and clamps the pipes, accurately transferring them to the chuck station. A wiring cavity is formed inside the feeding racks B1, with wiring holes B1121 and wiring collection holes B141. The pipelines of the feeding structure B are connected to the internal cavity of the base frame A1 through the wiring cavity. The power harness, control signal line, pneumatic pipeline, etc. of the feeding structure B can be neatly laid inside the wiring cavity through the wiring hole B1121. The power line, control line pipeline, etc. after being gathered can be uniformly routed through the wiring gathering hole B141, pass through the inside of the base frame A1 and reach the electrical cabinet. This realizes the built-in hidden arrangement of all pipelines and harnesses, abandoning the traditional external cable tray structure, realizing the whole machine built-in wiring, simple assembly and convenient maintenance.

[0017] After the pipe is cut by the laser cutting mechanism A3, multiple receiving structures C in the unloading area work together. The first lifting plate C2, which is installed on the receiving base C1, is driven by the receiving lifting drive mechanism C6 to perform lifting and reciprocating motion. Since the second lifting plate C3 is slidably connected to the first lifting plate C2, and the transmission component C4, which is fixed at one end to the receiving base C1 and at the other end to the second lifting plate C3, is wound around the guide component C5 of the first lifting plate C2, a fixed linkage transmission structure is formed. When the first lifting plate C2 moves up and down under the driving action, the guide component C5 will move synchronously with the first lifting plate C2, and play a guiding and pushing role on the transmission component C4. Because there is no relative displacement at the end where the transmission component C4 is connected to the receiving base C1, the upward movement of the first lifting plate C2 will lift the transmission component C4 through the guide component C5, thereby pulling the second lifting plate C3 upward synchronously. When the first lifting plate C2 descends, it can drive the second lifting plate C3 to descend synchronously, ultimately achieving the linkage and synchronous lifting of the two lifting plates. Relying on the double-plate linkage structure, the overall lifting stroke is effectively extended without increasing the overall installation volume of the mechanism, taking into account both the equipment integration and the high and low position receiving requirements of large-diameter pipes. In addition, the receiving drive mechanism C8 installed on the second lifting plate C3 controls the operation of the tilting plate C7. The tilting plate C7 is normally kept in a horizontal state, which can stably lift and support pipes of different specifications, adapting to the stable support requirements of large-diameter thick-walled pipes. When unloading is required, the receiving drive mechanism C8 drives the tilting plate C7 to tilt, changing the material holding posture to complete the automatic unloading operation.

[0018] Please see Figure 3 and Figure 5 In some embodiments, the base frame A1 is composed of multiple horizontally and vertically extending square tubes welded together, with the cable passage holes formed in the corresponding square tubes. The base frame A1 is formed by welding the square tubes together, resulting in a simple structure with sufficient rigidity. Furthermore, the hollow structure of the square tubes themselves creates an internal cable routing channel, eliminating the need for external cable trays. This simplifies the equipment structure, reduces the overall size, and allows for the neat and concealed arrangement of air pipes and wiring harnesses, effectively protecting the pipelines from impacts and dust corrosion, while ensuring that the overall load-bearing strength and structural rigidity of the base frame A1 remain unaffected.

[0019] Please see Figures 2-5Specifically, the base frame A1 includes a first square tube A11 and a second square tube A12, whose extension direction is parallel to the length direction of the pipe and are arranged vertically; multiple third square tubes A13, which are spaced apart and connect the first square tubes A11 and the second square tubes A12; multiple fourth square tubes A14, which are spaced apart and connect to the lower surface of the second square tubes A12; and multiple fifth square tubes A15 and sixth square tubes A16, which are spaced apart and connect to the corresponding fourth square tubes A14. The 16 tubes are parallel to each other, and the multiple fifth square tubes A15 are all located in front of the multiple sixth square tubes A16. The front of any multiple fifth square tubes A15 is provided with a first wire hole A151. The back of the fifth square tube A15 with the first wire hole A151 is connected to the corresponding sixth square tube A16 through a second wire hole A152. The fourth square tube A14 is provided with a third wire hole A141, and adjacent sixth square tubes A16 are connected to each other through the third wire hole A141. To accommodate the reasonable arrangement of air pipes and wire harnesses corresponding to the loading structure B in the loading area and the receiving structure C in the unloading area, a first wire passage hole A151 is opened on the fifth square tube A15 at the corresponding position. This allows the air pipes and wire harnesses of the loading structure B and the receiving structure C to pass smoothly into the base frame A1 through the first wire passage hole A151. Subsequently, they are routed and guided in an orderly manner through the second wire passage hole A152 and the third wire passage hole A141 pre-set on each fourth square tube A14 and sixth square tube A16, and finally converge into the equipment chassis / electrical cabinet, achieving a concealed and orderly arrangement of air pipes and wire harnesses.

[0020] Please see Figure 3 and Figure 5, in some embodiments, the chassis A1 further includes a seventh square pipe A17 whose extending direction is parallel to the length direction of the pipe and is used for fixedly connecting to the back surface of the first square pipe A11. The highest point of the seventh square pipe A17 is lower than the highest point of the first square pipe A11. The seventh square pipe A17 is located above multiple sixth square pipes A16. The seventh square pipe A17 and the fourth square pipe A14 are fixedly connected by multiple eighth square pipes A18. In practical applications, the upper surface of the seventh square pipe A17 is used to support the drag chains of the first driving mechanism A212, the second driving mechanism A222, the third driving mechanism A232, and the fourth driving mechanism A242. Therefore, the height of the seventh square pipe A17 is lower than that of the first square pipe A11, forming a support step to adapt to the height of each driving mechanism. The added seventh square pipe A17 and the eighth square pipes A18 are firmly connected to form an independent support installation position at the rear side of the chassis A1, and the top surface of the seventh square pipe A17 is specifically used to support the drag chain structures supporting each driving mechanism; setting the seventh square pipe A17 to a height structure lower than that of the first square pipe A11 can naturally form a stepped support with different heights, adapting to the installation height and layout space requirements of various driving mechanisms. At the same time, the seventh square pipe A17 and the fourth square pipe A14 are firmly connected by means of the eighth square pipes A18, effectively improving the structural stability of the overall support part, ensuring that the drag chains are laid neatly and run smoothly, and also making the layout of each driving mechanism more reasonable and orderly.

[0021] Please refer to Figure 5 , in some embodiments, multiple fourth wire passing holes A171 are formed in the seventh square pipe A17, so that the seventh square pipe A17 and the corresponding eighth square pipes A18 are connected; a fifth wire passing hole A181 is formed in the side wall of the eighth square pipe A18 connected to the seventh square pipe A17. Specifically, the number of the fourth wire passing holes A171 and the fifth wire passing holes A181 is adapted to the number of drag chains. In this embodiment, when the number of drag chains is four, the number of the corresponding fourth wire passing holes A171 and the fifth wire passing holes A181 is four, that is, each fourth wire passing hole A171 and fifth wire passing hole A181 corresponds to one drag chain. By forming the fourth wire passing holes A171 in the seventh square pipe A17 and the fifth wire passing holes A181 in the side walls of the eighth square pipes A18 to make their interiors communicate with each other, a wire passing channel can be provided for the pipelines arranged inside the drag chains, realizing the regular threading of the pipelines from the drag chain position into the chassis A1. At the same time, the number of wire passing holes corresponds one-to-one with the number of drag chains, enabling the partitioned and independent arrangement of each group of pipelines, avoiding the entanglement and mixing of the lines, making the pipeline routing clearer and more orderly, which is convenient for the orderly arrangement and regular storage of the pipelines and also for the separate maintenance of each group of lines in the later stage, further optimizing the internal wiring layout of the equipment.

[0022] Please refer to Figure 3 and Figure 4In some embodiments, a reinforcing oblique square tube A191 is fixedly connected between the front of the second square tube A12 and the multiple fourth square tubes A14. Adding the reinforcing oblique square tube A191 between the second square tube A12 and the fourth square tubes A14 effectively strengthens the overall structural strength and rigidity of the base frame A1, improving its overall load-bearing capacity and resistance to deformation. The front of the base frame A1 is the main mounting surface for the feeding structure B and the receiving structure C. Adding the reinforcing oblique square tube A191 further stabilizes the mounting base, reduces vibration during equipment operation, ensures the feeding and unloading components are securely installed and operate smoothly, and improves the structural stability and reliability of the entire pipe cutting machine during operation.

[0023] Please see Figures 3-5 In some embodiments, the base frame A1 further includes a first sealing plate A192 for connecting the first square tube A11 and the second square tube A12 and for covering the front of the multiple third square tubes A13, a second sealing plate A193 for covering the two sides of the first square tube A11 and the second square tube A12, and a third sealing plate A194 for covering the front and back of the multiple fourth square tubes A14; the first sealing plate A192 and the second sealing plate A193 are fixedly connected to the corresponding first square tube A11 and the second square tube A12 by welding; the third sealing plate A194 is fixedly connected to the corresponding fourth square tube A14 by welding. By installing the first sealing plate A192, the second sealing plate A193, and the third sealing plate A194, and fixing them to the corresponding positions of the square tubes using welding, multiple empty spaces in the base frame A1 can be completely sealed and covered. This not only completely hides the internal wiring structure, further optimizing the overall cleanliness of the equipment's appearance, but also effectively prevents external dust, debris, and oil from entering the base frame A1, avoiding corrosion of the pipelines and square tube structure and affecting its service life. Simultaneously, the sealing plates further enhance the overall enclosed structural strength of the base frame A1, reducing structural sway during equipment operation and lowering the probability of damage to internal transmission and wiring components from external impacts, thus better adapting to the on-site processing environment of the pipe cutting machine. Furthermore, it eliminates the need for separate sheet metal assembly of the sealing plates, simplifying the overall assembly process, effectively shortening the overall machine production cycle, improving production assembly efficiency, and reducing the input of parts matching and manual assembly, thereby significantly reducing the overall manufacturing cost of the equipment.

[0024] Please see Figure 3 and Figure 5In some embodiments, the first square tube A11 and the second square tube A12 are configured as multiple tubes according to their length, and adjacent first square tubes A11 and adjacent second square tubes A12 are detachably connected by quick-release parts A111. By segmenting the first square tubes A11 and the second square tubes A12 according to their length and using quick-release parts A111 to achieve detachable splicing between adjacent segments, it can flexibly adapt to the production needs of pipes with different processing lengths. The overall assembly length of the base frame A1 can be freely adjusted according to the actual usage scenario. At the same time, the segmented combination structure facilitates the disassembly, transportation, and on-site handling and storage of the base frame A1, reducing the difficulty of transporting large components. During later equipment maintenance and component replacement, corresponding sections can be disassembled individually for operation, making disassembly and assembly convenient and efficient.

[0025] Please see Figure 4 In some embodiments, removable protective plates A223 are provided on the sides and inner walls of the second chuck A221 and the third chuck A231 facing the laser cutting mechanism A3. Installing removable copper protective plates A223 on the sides and inner walls of the second chuck A221 and the third chuck A231 facing the laser cutting mechanism A3 effectively blocks the laser beam from directly striking the chuck body during cutting operations, preventing high-temperature laser damage to the chuck structure during beveling and extending the overall service life of the chuck. Furthermore, in this embodiment, the protective plates A223 adopt a split, multi-piece assembly structure. If a section is cut through and damaged during use, it is not necessary to replace the entire plate; only the damaged section needs to be replaced. This simplifies maintenance and reduces the cost of parts replacement and equipment maintenance.

[0026] Please see Figure 4 In some embodiments, the base frame A1 is also provided with exhaust holes A121 penetrating its front and back sides. Exhaust pipes A122 are connected to the exhaust holes A121, and the first end of the exhaust pipes A122 is connected to an exhaust box A123 located in the cutting area of ​​the laser cutting mechanism A3. By providing exhaust holes A121 penetrating both sides of the base frame A1 and installing exhaust pipes A122, connecting the exhaust pipes A122 to the exhaust box A123 within the cutting area, the smoke, dust, and exhaust gases generated at the cutting station can be quickly collected and discharged during laser cutting operations. This effectively purifies the environment of the equipment's operating area, reduces the accumulation of harmful fumes, improves on-site operating conditions, and prevents dust from affecting cutting accuracy and the normal use of equipment components. Furthermore, the arrangement of pipes using the pre-reserved holes in the base frame A1 is neat and does not occupy external space, resulting in a simple and practical smoke and ventilation structure.

[0027] Please see Figure 2 and Figure 4In some embodiments, the upper surface and front side of the base frame A1 are provided with guide rails A124 whose extension direction is consistent with the length direction of the base frame A1; the first drive mechanism A212, the second drive mechanism A222, and the third drive mechanism A232 are slidably connected to the guide rails A124 via sliders A125. Specifically, each drive mechanism consists of a motor mounted on the side plate, a gear connected to the output end of the motor, and a rack mounted on the base frame A1. The rack is located on the upper surface of the base frame A1, one guide rail A124 is located on the upper surface of the base frame A1, and two guide rails A124 are located on the front side of the base frame A1. The side plate is in the shape of a "7", and the slider A125 is located on the side plate. The coordinated operation of the guide rails A124 in multiple positions can improve the stability and guiding accuracy of the drive mechanism during operation, effectively ensuring the accurate movement and positioning of each set of chucks. The A124 guide rails are arranged in upper and lower sections to reasonably distribute the load and sliding load, which can reduce jamming and wear during operation. The transmission components are integrated and installed on the side hanging plate. The structure is compact and regular, which can not only meet the needs of long-distance reciprocating movement, but also facilitate the disassembly, assembly, debugging and daily maintenance of the transmission components.

[0028] Please see Figure 4 In some implementations, to address the lubrication issues of moving components such as the first drive mechanism A212, the second drive mechanism A222, the third drive mechanism A232, the fourth drive mechanism A242, the guide rail A124, and the rack, multiple separate lubricating oil pumps A126 are provided. The lubricating oil pumps A126 deliver lubricating oil to each moving component to achieve automatic oil supply and lubrication. This allows for continuous and uniform maintenance of easily worn structures such as the guide rail A124 and the rack, eliminating the need for manual shutdown to add lubricating oil. This ensures smooth operation of each transmission sliding component, reduces wear and loss, and reduces the workload of manual maintenance, effectively improving the continuous operation time and overall operating efficiency of the equipment.

[0029] Please see Figure 2 and Figure 4 In some embodiments, the front of the base frame A1 is further provided with an oil collection groove A127 whose extension direction is consistent with that of the guide rail A124, and an oil drain connector is provided in the oil collection groove A127; the oil collection groove A127 is located below the guide rail A124. This arrangement can promptly collect excess lubricating oil and grease dripping from components such as the guide rail A124 and rack after lubrication, achieving unified collection and storage of waste oil, preventing oil from flowing randomly and contaminating the equipment table and workpieces, and maintaining a clean working environment; the collected oil can be centrally and uniformly discharged and cleaned through the oil drain connector. The structure is simple and practical, ensuring equipment cleanliness and reducing component corrosion caused by oil accumulation.

[0030] Please see Figure 8 and Figure 9In some embodiments, each of the feeding racks B1 includes two side plates B11 arranged symmetrically from left to right, a support plate B12 for connecting the upper surfaces of the two side plates B11, a front plate B13 for connecting the front surfaces of the two side plates B11, a rear plate B14 for connecting the rear surfaces of the two side plates B11, and a base plate B15 for connecting the lower surfaces of the two side plates B11; a plurality of wiring holes B1121 are respectively opened on the corresponding side plate B11, and a plurality of wiring collection holes B141 are respectively opened on the corresponding rear plate B14; the plurality of rear plates B14 are all used to be detachably connected to the front of the base frame A1 by fasteners.

[0031] The loading rack B1 is an integral load-bearing frame composed of symmetrical side plates B11, support plate B12, front plate B13, rear plate B14, and base plate B15. The overall structure is highly robust and has high load-bearing rigidity, fully meeting the load-bearing, vibration-resistant, and structural stability requirements during pipe loading. The side plate B11 has wiring holes B1121, and the rear plate B14 has wiring convergence holes B141, allowing for neat wiring cavities within the loading rack B1 and enabling concealed wiring. The rear plate B14 is detachably connected to the base frame A1 via fasteners, facilitating the assembly, disassembly, and maintenance of the loading rack B1. The overall design balances structural strength, wiring neatness, and ease of assembly and disassembly.

[0032] Please see Figure 8 In some embodiments, the two side plates B11 include an integrally formed upper side plate B111 and a lower side plate B112. The length of the upper side plate B111 is shorter than the length of the lower side plate B112, so that a feeding bayonet B113 is formed between the upper side plate B111 and the lower side plate B112. This structure, while ensuring the overall structural integrity and strength of the side plates B11, provides dedicated movement and working space for the chuck mechanism of the pipe cutting machine. During the pipe feeding operation, the feeding bayonet B113 can serve as a clearance channel and movement area for the pipe cutting machine chuck, effectively avoiding structural interference from the side plates B11 of the feeding rack B1 on the movement, clamping, and picking actions of the chuck. This ensures that the chuck can smoothly extend into the area of ​​the feeding structure B and grab the pipes to be conveyed between the limiting blocks B21, thus successfully completing the pipe docking, grabbing, and feeding conveying actions. The integrated long and short side plates B11 staggered molding structure has good overall structural integrity and reliable strength.

[0033] Please see Figure 9In some embodiments, a supporting square tube B114 is fixedly connected between the two side plates B11. The extending direction of the supporting square tube B114 is parallel to the length direction of the side plate B11, and the supporting square tube B114 is used to connect the upper parts of the two lower side plates B112, such that the highest point of the supporting square tube B114 is level with the highest point of the two lower side plates B112 or the highest point of the supporting square tube B114 is slightly lower than the highest point of the two lower side plates B112. The aforementioned limitations, on the one hand, effectively enhance the overall connection strength and structural rigidity between the two side plates B11, providing lateral reinforcement and support to the overall feeding rack B1 frame. This effectively offsets the vibration and load stress generated during pipe storage and transportation, preventing deformation of the side plates B11 under long-term stress and improving the overall stability and load-bearing reliability of the feeding rack B1. On the other hand, in practical applications, since each wiring hole B1121 is located below the supporting square tube B114, the supporting square tube B114 can effectively shield and cover the upper feeding bayonet B113 position, creating a relatively closed internal space for the wiring cavity between the side plates B11. This reduces the amount of cutting dust, metal shavings, oil stains, and other impurities falling into the wiring cavity from above, ensuring a clean interior and stable wiring environment. This further guarantees the long-term stable operation of the equipment lines and air circuits, while not affecting the function of the feeding bayonet B113 in avoiding the pipe cutting machine chuck and performing material handling operations. This balances structural strength, pipeline sealing, and the normal feeding operation requirements of the equipment.

[0034] Please see Figure 8 In some embodiments, L-shaped placement plates B16 are also spaced apart in the wiring cavity formed by the two side plates B11; multiple L-shaped placement plates B16 are located beside the wiring hole B1121. Specifically, the bottom of this feeding rack B1 has a hollow design, forming a dedicated support and placement structure inside the wiring cavity without occupying external space of the equipment or affecting the wiring cavity's pipeline layout and transparency and protection performance. The L-shaped placement plates B16 are stably set in the reserved area beside the wiring hole B1121 and can be used to support and place small parts, terminals, pipe joints, fixing clips, and auxiliary installation accessories required for the feeding structure B. Meanwhile, the "L"-shaped placement plate B16 is set at intervals, which will not obstruct or interfere with the wiring and maintenance operations of the wiring hole B1121 on the side plate B11. It will not affect the installation and maintenance of wire harnesses and pipes, and will make full use of the idle internal space of the wiring cavity to maximize the use of equipment space. This further optimizes the integration and practicality of the overall structure of the loading rack B1, and together with the built-in wiring structure, improves the overall neatness and regularity of the equipment.

[0035] Please see Figure 6 and Figure 10In some embodiments, a material arrival sensing mechanism B6 is further provided at the end of any of the side plates B11. The material arrival sensing mechanism B6 includes a material arrival sensor B61 disposed on the side plate B11, a rotating rod B62 disposed on the side plate B11, a counterweight bracket B63 rotatably connected to the rotating rod B62, a material arrival pressure plate B65 disposed on the top of the counterweight bracket B63, and a limiting member B disposed on the side wall of the loading rack B1 and located beside the counterweight bracket B63. 66; The material arrival sensor B61 is located below the material arrival pressure plate B65; one end of the rotating rod B62 is fixedly connected to the side plate B11, and the other end is rotatably connected to the middle of the counterweight bracket B63; a counterweight block B64 is also provided at the bottom of the counterweight bracket B63, and the counterweight bracket B63 is inclined; the material arrival pressure plate B65 is used to drive the counterweight bracket B63 to rotate by the gravity of the pipe, so that the material arrival pressure plate B65 presses down and triggers the material arrival sensor B61. The material arrival sensing mechanism B6 is provided. The material arrival sensing mechanism B6 adopts a pendulum-like gravity reset structure, abandoning the traditional spring reset structure. It is mainly composed of the material arrival sensor B61, the rotating rod B62, the counterweight bracket B63, the material arrival pressure plate B65 and the counterweight block B64. It realizes the pipe arrival detection and automatic reset function through pure gravity mechanical cooperation. The structure is simple and the operation is highly stable.

[0036] In the assembled state, the rotating rod B62 is fixed to the side plate B11 and rotates in conjunction with the center of the counterweight bracket B63. Together with the counterweight block B64 at the bottom of the counterweight bracket B63 and the limiting component B66, the counterweight bracket B63 remains tilted, keeping the top material receiving platen B65 at a low initial sensing position, ensuring accurate and unbiased sensing position during material waiting. When the pipe is conveyed to the designated station by the feeding mechanism, its own weight presses against the material receiving platen B65, causing the entire counterweight bracket B63 to rotate around the rotating rod B62. This causes the material receiving platen B65 to move downwards and trigger the material receiving sensor B61 below, completing the sensing and feedback of the pipe's arrival signal. This provides precise positional signals for subsequent clamping, feeding, and cutting operations. As the pipe continues to be conveyed and clamped by the chuck, it moves out of the pressure range of the feeding plate B65. Under the gravity of the bottom counterweight B64, the feeding sensing mechanism B6 automatically rotates and resets, causing the feeding plate B65 and the counterweight bracket B63 to return to their initial tilt sensing state. This eliminates the need for elastic reset components such as springs, effectively avoiding problems such as fatigue failure, jamming, and incomplete reset caused by long-term reciprocating springs. This reduces the failure rate and maintenance cost of the feeding sensing mechanism B6, improves the accuracy and continuity of pipe arrival detection, and ensures the automated, stable, and orderly operation of the feeding process of the pipe cutting machine.

[0037] Please see Figure 10In some embodiments, the rotating rod B62, the counterweight bracket B63, and the counterweight block B64 are arranged in multiple sets at intervals along the length of the side plate B11, and the tops of the multiple counterweight brackets B63 are all connected to the material receiving plate B65. Arranging multiple sets of rotating rods B62, counterweight brackets B63, and counterweight blocks B64 at intervals along the length of the side plate B11, collectively supporting and connecting the same material receiving plate B65, can evenly distribute the pressure applied by the pipe at multiple points, improve the overall support strength and force balance of the material receiving plate B65, avoid skewing or deformation due to single-point force on the plate, and ensure synchronous and reliable sensing action. The material receiving plate B65 is provided with a guide slope in the direction of the front end plate B13. When the pipe is conveyed and comes into contact with the material receiving plate B65, it can be smoothly pushed against the material receiving plate B65 with the help of the slope, which effectively reduces the hard collision and jamming between the pipe and the material receiving plate B65. This can not only complete the sensing trigger smoothly, but also reduce the scratches and damage to the pipe surface.

[0038] Please see Figure 10 In some embodiments, the counterweight bracket B63 has multiple first mounting holes B631 extending along its length, and the rotating rod B62 is used to rotatably connect with any of the first mounting holes B631. The counterweight bracket B63 has multiple sets of first mounting holes B631 arranged along its length, allowing for selection of different hole positions for assembly and connection with the rotating rod B62 as needed. This enables flexible adjustment of the rotation fulcrum position of the counterweight bracket B63, thereby changing the initial height and sensing stroke of the material pressure plate B65. This adapts to the detection triggering requirements of pipes with different diameters and weights, improving the adjustment flexibility and equipment adaptability of the material sensing mechanism B6, and also facilitating component assembly, alignment, and subsequent debugging and maintenance.

[0039] Please see Figure 10 In some embodiments, the counterweight B64 is provided in multiple pieces, and all of the counterweight B64 are detachably mounted on the bottom of the rotating rod B62. The counterweight B64 adopts a multi-piece detachable assembly structure, which allows for the addition or reduction of the number of counterweight B64 according to the actual pipe specifications and weight differences, flexibly adjusting the overall counterweight of the counterweight bracket B63. This alters the reset force and sensing trigger sensitivity of the material arrival sensing mechanism B6, adapting to the detection requirements under different working conditions. Simultaneously, the detachable structure facilitates the disassembly and replacement of components and the adjustment of counterweight parameters, enabling rapid correction of the sensing trigger threshold, ensuring accurate and stable material arrival detection, and effectively broadening the application range of the material arrival sensing mechanism B6.

[0040] Please see Figure 10In some embodiments, each of the multiple counterweight blocks B64 has an elongated slotted hole B641 extending along its length. The bottom of the counterweight bracket B63 has a number of second mounting holes B632 matching the number of slotted holes B641. Locking elements are installed in the slotted holes B641 and the corresponding second mounting holes B632. The elongated slotted holes B641 on the counterweight blocks B64, combined with the corresponding second mounting holes B632 on the bottom of the counterweight bracket B63 and the locking elements, achieve a secure assembly. The installation position of the counterweight blocks B64 can be finely adjusted along the length of the slotted holes B641, thereby changing the center of gravity distribution and precisely controlling the reset torque and sensing sensitivity of the material receiving mechanism B6, adapting to the detection conditions of pipes of different weights. Simultaneously, this structure is easy to assemble and align, flexible to disassemble and adjust, and can correct the sensing response state as needed, ensuring stable and reliable material receiving detection.

[0041] Please see Figure 6 In some embodiments, the multiple feeding racks B1 are detachably connected via connecting square tubes B17. The feeding racks B1 are arranged in multiple sets with left-right intervals, and are detachably assembled and connected to each other via connecting square tubes B17. The number of feeding racks B1 can be flexibly increased or decreased according to the actual conveying span and processing specifications of the pipes, adapting to the support and conveying needs of pipes of different sizes. The assembly and disassembly method is simple, facilitating equipment disassembly for transportation, on-site assembly, and maintenance. Simultaneously, the connecting square tubes B17 securely connect each set of feeding racks B1, ensuring the overall frame structure is robust. The chain drive mechanism B3 is used to drive the chain conveying mechanism B2 on the multiple feeding racks B1 to rotate. Specifically, the chain drive mechanism B3 includes a chain drive motor, a reducer, a drive sprocket, a driven sprocket, and a transmission chain; the output end of the chain drive motor is connected to the input end of the reducer, and the output end of the reducer is connected to the drive sprocket. The drive sprocket drives the driven sprocket to rotate synchronously through the transmission chain. Adjacent driven sprockets are connected through a transmission shaft and a coupling, thereby realizing the synchronous linkage conveying of multiple feeding racks B1, improving the consistency of pipe feeding cycle and the stability of the overall machine operation.

[0042] Please see Figure 9In some embodiments, the pipe clamping mechanism B4 includes a transverse plate B41 that can reciprocate along the length of the loading rack B1, a lifting plate B42 located beside the transverse plate B41, a lifting drive mechanism B43 disposed on the lifting plate B42 and used to drive the lifting plate B42 to rise or fall, a clamping cylinder B44 disposed on the lifting plate B42, two pulling blocks B45 disposed on the output end of the clamping cylinder B44, and clamping blocks B44 connected to the corresponding pulling blocks B45. 6; The clamping drive mechanism B5 includes a clamping drive motor B51 disposed on the transverse plate B41, a clamping gear disposed on the output end of the clamping drive motor B51, and a clamping rack B52 disposed on the side wall of the loading rack B1, wherein the clamping gear and the clamping rack B52 mesh; The lifting drive mechanism B43 includes a lifting drive motor, a lifting gear disposed on the output end of the lifting drive motor, and a lifting rack disposed on the side wall of the transverse plate B41, wherein the lifting gear and the lifting rack mesh. In practical applications, the clamping drive motor B51 drives the meshing clamping gear to rotate along the clamping rack B52, causing the transverse plate B41 to move horizontally along the length of the loading rack B1, thus achieving lateral adjustment of the clamping position; the lifting drive motor drives the lifting plate B42 to move vertically up and down through the meshing transmission of the lifting gear and the lifting rack, thereby adapting to the clamping height of the pipe; the clamping cylinder B44 drives the two pulling blocks B45 on both sides to move towards each other, causing the clamping blocks B46 to move closer together to clamp the pipe, completing the clamping and positioning of the pipe, and can then be used in conjunction with displacement actions to transfer the pipe to the designated work station.

[0043] In this embodiment, the pipe clamping mechanism B4 is also equipped with a clamping drag chain B47, which is used to protect and guide the cables of the clamping cylinder B44, the lifting drive motor, and the clamping drive motor B51 to move in sync, avoiding tangling and wear. Therefore, the side plate B11 also guides the cables of the clamping drag chain B47 to the wiring cavity through the wiring hole B1121, ensuring that the cables are always in an orderly and controlled wiring state during lateral movement and lifting. The cables of the clamping drag chain B47 are also guided through the wiring cavity, converge to the wiring convergence hole B141, and finally converge to the electrical cabinet.

[0044] Please see Figure 12 , Figure 14 and Figure 15In some embodiments, the transmission component C4 is a pull chain, and the guide component C5 includes two bearing seats C51 disposed on the first lifting plate C2, guide sprockets C52 rotatably connected to the corresponding bearing seats C51, and a guide connecting shaft C53 for connecting the two guide sprockets C52; the pull chain drives the guide sprockets C52. In this structure, the transmission component C4 is a pull chain, and the guide component C5 consists of two sets of bearing seats C51, guide sprockets C52, and a guide connecting shaft C53 connecting the two guide sprockets C52. The two bearing seats C51 are symmetrically fixedly installed on the first lifting plate C2, and the guide sprockets C52 are rotatably engaged with the corresponding bearing seats C51. The overall structure is linked through the guide connecting shaft C53, and the pull chain and guide sprockets C52 form a chain drive engagement. The two ends of the pull chain are fixedly locked to the receiving base C1 and the second lifting plate C3 respectively, with no relative displacement. Since the second lifting plate C3 is slidably connected to the first lifting plate C2, when the first lifting plate C2 is lifted and displaced under the action of the receiving lifting drive mechanism C6, it will drive the guide sprocket C52 on the first lifting plate C2 to move synchronously. Relying on the chain drive characteristics of the pulling chain and the guide sprocket C52, as well as the fixed limiting structure at both ends of the pulling chain, the moving guide sprocket C52 will exert a pushing and pulling effect on the pulling chain, thereby driving the second lifting plate C3 to lift and displace synchronously at the same speed as the first lifting plate C2, so as to achieve the synchronous linkage motion effect of the two lifting plates.

[0045] Please see Figure 12In some embodiments, an adjusting block C41 is fixedly connected to the back of the receiving base C1. The adjusting block C41 has through holes penetrating its upper and lower side walls. An adjusting rod C42 with a threaded rod body is provided in the through hole. The head of the adjusting rod C42 is connected to a link of the pulling chain. Two adjusting nuts C43 are threadedly connected to the rod body of the adjusting rod C42. The two adjusting nuts C43 are used to clamp the upper and lower surfaces of the adjusting block C41, respectively. The adjustable chain tension fixing structure consists of an adjusting block C41 fixed to the back of the receiving base C1, a threaded adjusting rod C42 with a through hole, and two sets of adjusting nuts C43. The head of the adjusting rod C42 is connected to the chain link of the pulling chain, and the threaded section of the rod is inserted into the through hole of the adjusting block C41 and locked in place by the adjusting nuts C43. By turning the two adjusting nuts C43, the extension length of the adjusting rod C42 relative to the adjusting block C41 can be changed, thereby fine-tuning the tension of the pulling chain. This can effectively compensate for the tensile deformation and slack gap caused by the long-term operation of the pulling chain, and avoid problems such as the guide sprocket C52 transmission jamming, asynchronous linkage of the two lifting plates, and deviation of lifting accuracy caused by the loose pulling chain. At the same time, the pre-tension of the pulling chain can be standardized and calibrated during the equipment assembly stage, ensuring that the chain drive structure is always in a stable and accurate operating state, continuously ensuring the accuracy and stability of the synchronous lifting of the two plates, and effectively extending the service life of the pulling chain and the entire linkage mechanism.

[0046] Please see Figures 13-15 In some embodiments, the second lifting plate C3 has a clearance hole. The receiving lifting drive mechanism C6 includes a receiving motor C61 mounted on the first lifting plate C2 with its output end passing through the clearance hole, a receiving gear C62 driven by the output end of the receiving motor C61, and a receiving rack C63 extending vertically on the receiving base C1. The receiving rack C63 and the receiving gear C62 mesh. This structure, by providing a clearance hole on the second lifting plate C3 and cooperating with the gear and rack type lifting drive mechanism C6 composed of the receiving motor C61, the receiving gear C62, and the vertical receiving rack C63, with the receiving motor C61 fixed to the first lifting plate C2 and its output end passing through the clearance hole, effectively utilizes the space between the two lifting plates, avoids structural interference between the drive components and the lifting plates, and achieves a compact integrated installation of the drive mechanism. Through the meshing transmission of gears and a vertical rack, the rotational power of the motor can be stably converted into the vertical linear motion of the first lifting plate C2. This transmission method boasts high rigidity and operational precision, providing a smooth and reliable power output for the synchronous lifting of both lifting plates, ensuring rapid start-stop response and precise displacement control. Simultaneously, this vertical meshing drive method offers sufficient load-bearing capacity and good operational stability, adapting to the material receiving and lifting conditions of pipes of different weights and specifications. This effectively improves the overall lifting and positioning accuracy and operational stability of the receiving mechanism, further ensuring the stability of pipe receiving and support.

[0047] Please see Figure 15 In some embodiments, the receiving base C1 is provided with a vertically extending first receiving guide rail C21, and the back of the first lifting plate C2 is provided with a first receiving slider C22, which is slidably connected to the first receiving guide rail C21. The vertical sliding cooperation between the first receiving slider C22 and the first receiving guide rail C21 provides guidance and limiting constraints for the entire lifting motion of the first lifting plate C2. The cooperation between the first receiving guide rail C21 and the first receiving slider C22 effectively limits the horizontal offset, swaying, and torsional deviation of the first lifting plate C2, ensuring that the first lifting plate C2 always moves smoothly back and forth in the vertical direction, effectively improving the linearity of the first lifting plate C2's movement and the overall smoothness of its operation. Simultaneously, this sliding guide structure can share the lateral force of the gear and rack drive mechanism, reducing wear on transmission components and ensuring the accuracy and consistency of the synchronous linkage of the two lifting plates.

[0048] Please see Figure 14 In some embodiments, a second receiving slider C24 is provided on the front of the first lifting plate C2, and a second receiving guide rail C23 is provided on the back of the second lifting plate C3. The second receiving slider C24 and the second receiving guide rail C23 are slidably connected. Utilizing the vertical sliding cooperation between the second receiving slider C24 and the second receiving guide rail C23, a highly fitted built-in guide motion pair is formed between the first lifting plate C2 and the second lifting plate C3. This structure provides precise internal guiding constraints for the synchronous lifting of the two lifting plates, effectively limiting the second lifting plate C3 from shifting forward, backward, left, or right relative to the first lifting plate C2, as well as from twisting or swaying, ensuring that the second lifting plate C3 follows the first lifting plate C2 in a coaxial, same-speed, and same-stroke vertical linear motion throughout the entire process. The inner and outer double-layer guide rail slider structures cooperate with each other to form a comprehensive three-dimensional guiding system with the bottom first receiving guide rail C21, improving the coaxiality and operational stability of the dual-plate linkage lifting.

[0049] Please see Figure 14In some embodiments, a first anti-collision block C25 is provided on the front of the first lifting plate C2 and the back of the second lifting plate C3, and one of the first anti-collision blocks C25 is provided with anti-collision rubber C26. The reserved distance between the two first anti-collision blocks C25 is greater than the maximum total lifting stroke of the receiving structure C, so that the first anti-collision blocks C25 set above and below the equipment remain separated and do not contact each other during normal lifting operation, and will not interfere with the normal linkage stroke and receiving action of the mechanism. This structure is a mechanical fault-tolerant protection structure. Only when the equipment malfunctions, such as program abnormality, chain drive failure, signal deviation, etc., causing the lifting stroke to exceed the tolerance, or the mechanism to be misaligned and out of control, will the two first anti-collision blocks C25 abut against each other and cooperate. Relying on the buffering and shock absorption characteristics of the anti-collision rubber C26, it absorbs the impact energy, achieving dual protection of hard limit and flexible anti-collision. It effectively avoids the first lifting plate C2 and the second lifting plate C3 from overtravel collision and hard impact, and can also prevent the safety problems caused by the falling pipe, improving the structural safety and overall protection capability of the equipment in the fault state.

[0050] Please see Figure 12 In some embodiments, a position sensor C31 is installed on the receiving base C1 (only the mounting plate for installing the sensor is shown in the figure), and a sensing plate C32 is installed on the second lifting plate C3. The position sensor C31 is used to sense the sensing plate C32. By real-time sensing and monitoring of the position status of the sensing plate C32 through the position sensor C31, the lifting position of the receiving structure C is detected and the signal feedback is realized. This sensing and cooperating structure can capture the lifting stroke position, start / stop status, and reset status of the second lifting plate C3 in real time, and can convert the mechanical displacement signal into an electrical signal to feed back to the equipment control system. This provides accurate positional basis for the automation logic of receiving, supporting, and unloading materials, ensuring precise start / stop and orderly timing of lifting actions.

[0051] Please see Figure 11 and Figure 12In some embodiments, the receiving drive mechanism C8 is a cylinder with its cylinder body located on the front of the second lifting plate C3, and the output end of the cylinder is hinged to the lower surface of the flip plate C7. This structure uses a cylinder as the receiving drive mechanism C8, integrating the cylinder body onto the front of the second lifting plate C3. The cylinder output end is hinged to the lower surface of the flip plate C7, forming a compact and efficient flip plate C7 tilting drive structure. This arrangement fully utilizes the surface space of the second lifting plate C3, avoiding structural bulkiness and spatial interference caused by externally mounted drive components, and improving the overall integration of the mechanism. Relying on the linear power output characteristics of the cylinder's extension and retraction, combined with the flexible rotation advantage of the hinged connection, the flip plate C7 can be stably and efficiently driven to complete posture switching. When the cylinder extends, it can push the flip plate C7 to maintain a horizontal state, achieving stable receiving and stable lifting of the pipe. When the cylinder retracts, it can pull the flip plate C7 downwards to complete the automatic unloading action. The cylinder-driven method offers fast response, stable power output, and moderate load capacity, making it suitable for various conventional pipe material handling and unloading operations. It enables precise and rapid switching of the C7 flip plate posture, effectively ensuring the continuity and stability of material receiving and unloading actions.

[0052] Please see Figure 11 In some embodiments, a second anti-collision block C71 is provided at the rear end of the upper surface of the flip plate C7; a guide roller C72 is provided on the upper surface of the flip plate C7. This structure provides a second anti-collision block C71 at the rear end of the upper surface of the flip plate C7, and a guide roller C72 is provided on the upper surface of the flip plate C7, forming an auxiliary operation structure that prevents slippage on the inner side and guides material feeding on the outer side. The second anti-collision block C71 on the inner side of the flip plate C7 can play a limiting and blocking role, effectively preventing the pipe from sliding and rolling inward, avoiding the pipe from shifting and coming off during the receiving, lifting and flipping process, eliminating processing failures and safety hazards caused by pipe falling or position shifting, and ensuring the stability of the pipe on the flip plate C7. The guide roller C72 arranged on the outer side of the flip plate C7 can form a smooth rolling guide structure. When the flip plate C7 tilts to discharge material, the pipe can roll smoothly against the surface of the guide roller C72 and slide orderly into the U-shaped storage rack C91 below, effectively reducing the frictional resistance during the pipe discharge process, and reducing the problem of pipe surface wear, bumps and scratches.

[0053] Please see Figure 11 and Figure 12In some embodiments, the receiving base frame C1 includes two symmetrically arranged base plates C11, a vertical square tube C12 fixedly connected to the corresponding base plate C11 and extending vertically, and a vertical plate C13 for connecting the two vertical square tubes C12; the front of the vertical plate C13 is slidably connected to the back of the first lifting plate C2; ​​each of the two vertical square tubes C12 has a mounting plate C14 on its back, which is used to connect to the base frame of the pipe cutting machine by fasteners; the vertical square tube C12 also has an operating hole C121 for easy fastener installation. The receiving base frame C1 of this equipment adopts a split-combination symmetrical structure with high structural symmetry and uniform stress, which can provide a stable installation bearing foundation for the entire lifting and receiving mechanism. The front of the vertical plate C13 forms a sliding fit foundation with the back of the first lifting plate C2, providing a flat and reliable installation reference for the vertical guiding movement of the first lifting plate C2, effectively ensuring the straightness and stability of the lifting movement. Two sets of vertical square tubes C12 are each fixed with a mounting plate C14 on their backs. Fasteners are used to lock the overall material receiving structure to the main frame of the pipe cutting machine, ensuring reliable installation and high assembly precision. Simultaneously, operating holes C121 are provided on the vertical square tubes C12, offering convenient operating space for fastener installation, tightening, and subsequent disassembly and maintenance. This solves the problem of difficult assembly operations for enclosed square tube structures, reduces the difficulty of equipment assembly, subsequent maintenance, and disassembly, and improves equipment assembly efficiency and maintainability.

[0054] Please see Figure 16 In some embodiments, each receiving structure C is provided with one or more U-shaped storage racks C91 on its side; a short material storage hopper C92 is also provided on the front of the receiving structure C near the cutting area. This equipment arranges multiple sets of receiving structures C at intervals along the length of the pipe. The entire machine adopts a non-uniformly distributed combination layout of five sets of receiving components and seven sets of U-shaped receiving components, which can fully adapt to the material cutting needs of various pipes with a length ≤12500mm, expanding the equipment's pipe length adaptability range. The multiple sets of receiving structures C work together to provide multi-point uniform support for long pipes, effectively avoiding pipe bending, sagging, and deformation problems caused by large spans during the cutting and receiving of long pipes, ensuring the straightness of long pipe processing and the quality of finished products. Each independently matched U-shaped storage rack C91 can correspondingly receive the pipes cut at each workstation, achieving orderly and zoned storage of pipes, making the material cutting and storage operation more organized and efficient. Meanwhile, to address the short tailings and short-specification pipes generated during cutting, a short material storage hopper C92 is added to the front of the first receiving structure C near the laser cutting mechanism A3, enabling the classified unloading and zoned storage of long and short pipes, further improving the equipment's ability to unload pipes of all specifications.

[0055] In summary, this invention employs a square tube welded built-in wiring base A1, an integrated wiring cavity modular loading rack B1, and a double-plate linkage, flip-up receiving structure C to conceal all air pipes and wire harnesses within the machine, eliminating the need for traditional external cable trays. This simplifies the equipment structure, reduces the overall size of the machine, and simultaneously improves pipeline protection and ease of maintenance. Through multi-set chuck coordinated displacement, high-precision laser cutting, and automated loading and unloading linkage, it achieves efficient and stable processing of pipes with diameters ≤520mm and lengths ≤12500mm. It boasts advantages such as compact structure, reliable operation, easy maintenance, and strong adaptability, effectively solving the defects of existing external cable tray pipe cutting machines, such as low space utilization, poor protection, and inconvenient operation and maintenance. This improves equipment processing efficiency, operational stability, and service life, meeting the needs of modern automated precision pipe processing.

[0056] It is understood that those skilled in the art can make equivalent substitutions or changes to the technical solution and inventive concept of the present invention, and all such changes or substitutions should fall within the protection scope of the present invention.

Claims

1. A pipe cutting machine for loading and unloading, characterized in that, The system includes a base frame, a first chuck, a second chuck, and a third chuck mounted on the base frame, a laser cutting mechanism located in the base frame cutting area and between the second and third chucks, a first drive mechanism for reciprocating the first chuck along the length of the base frame, a second drive mechanism for reciprocating the second chuck along the length of the base frame, a third drive mechanism for reciprocating the third chuck along the length of the base frame, a loading structure located in the loading area of ​​the base frame, and multiple receiving structures located in the unloading area of ​​the base frame. Both the loading and unloading areas of the base frame have multiple wire-passing holes. The loading structure includes multiple spaced-apart loading racks, a chain conveyor mechanism rotatably mounted on the loading racks, spaced-apart limiting blocks mounted on the chain conveyor mechanisms, a chain drive mechanism for synchronously driving the multiple chain conveyor mechanisms to rotate, and a component located on one side of the loading racks. The system includes a pipe clamping mechanism and a clamping drive mechanism for driving the pipe clamping mechanism to reciprocate along the length of the feeding rack; a storage bay is formed between adjacent limiting blocks; multiple feeding racks are provided with multiple wiring holes, and multiple feeding racks are provided with wiring collection holes on their side walls facing the base frame; wiring cavities are formed inside the base frame and inside the multiple feeding racks, and the wiring cavities between the base frame and the feeding racks are interconnected through corresponding wiring holes and wiring collection holes; multiple receiving structures include a receiving base frame, a first lifting plate disposed on the receiving base frame; a second lifting plate slidably connected to the first lifting plate; a transmission component fixedly connected at one end to the receiving base frame and at the other end to the second lifting plate; a guide component disposed on the first lifting plate; a receiving lifting drive mechanism for driving the first lifting plate to rise or fall; and a flip plate rotatably connected to the second lifting plate. A material receiving drive mechanism is installed on the second lifting plate and is used to unload materials when the flip plate is tilted, and to support and / or receive materials when the plate is horizontal; the middle part of the transmission component is wound around the guide component so that when the first lifting plate rises or falls, the second lifting plate rises or falls synchronously.

2. The loading and unloading pipe cutting machine according to claim 1, characterized in that, The base frame is welded together from multiple horizontally and vertically extending square tubes, and the wire passage holes are opened in the corresponding square tubes; the base frame located in the cutting area is also provided with exhaust holes, and exhaust pipes are connected to the exhaust holes. The first end of the exhaust pipes is connected to an exhaust box, which is located in the cutting area.

3. The loading and unloading pipe cutting machine according to claim 2, characterized in that, The base frame also includes sealing plates welded to the corresponding square tubes and disposed on the front and sides of the base frame.

4. The loading and unloading pipe cutting machine according to claim 1, characterized in that, The second chuck and the third chuck are each provided with a removable protective plate on their sides and inner walls facing the laser cutting mechanism.

5. The loading and unloading pipe cutting machine according to claim 1, characterized in that, Each of the feeding racks includes two symmetrically arranged side plates, a support plate for connecting the upper surfaces of the two side plates, a front plate for connecting the front faces of the two side plates, a rear plate for connecting the rear faces of the two side plates, and a base plate for connecting the lower surfaces of the two side plates; multiple wiring holes are respectively opened on the corresponding side plates, and multiple wiring convergence holes are respectively opened on the corresponding rear plates; multiple rear plates are detachably connected to the front of the base frame by fasteners.

6. The loading and unloading pipe cutting machine according to claim 1, characterized in that, The rear end of the loading rack is also provided with a material arrival sensing mechanism. The material arrival sensing mechanism includes a material arrival sensor disposed on the side wall of the loading rack, a rotating rod disposed on the side wall of the loading rack, a counterweight bracket rotatably connected to the rotating rod, a material arrival pressure plate disposed on the top of the counterweight bracket, and a limiting member disposed on the side wall of the loading rack and located next to the counterweight bracket. The material arrival sensor is located below the material arrival pressure plate. One end of the rotating rod is fixedly connected to the loading rack, and the other end is rotatably connected to the middle of the counterweight bracket. A counterweight block is also disposed at the bottom of the counterweight bracket, and the counterweight bracket is inclined. The material arrival pressure plate is used to drive the counterweight bracket to rotate by the gravity of the pipe, so that the material arrival pressure plate is pressed down, triggering the material arrival sensor.

7. The loading and unloading pipe cutting machine according to claim 6, characterized in that, The rotating rod, the counterweight bracket, and the counterweight block are arranged in multiple intervals along the length of the feeding rack, and the top of each of the multiple counterweight brackets is connected to the feeding pressure plate.

8. The loading and unloading pipe cutting machine according to claim 1, characterized in that, The transmission component is a pull chain, and the guide component includes two bearing seats disposed on the first lifting plate, a guide sprocket rotatably connected to the corresponding bearing seats, and a guide connecting shaft for connecting the two guide sprockets; the pull chain drives the guide sprockets.

9. The loading and unloading pipe cutting machine according to claim 8, characterized in that, An adjusting block is fixedly connected to the back of the receiving base. The adjusting block has through holes penetrating its upper and lower side walls. An adjusting rod with threads on its rod body is installed in the through hole. The head of the adjusting rod is connected to a link of the pulling chain. Two adjusting nuts are threadedly connected to the rod body. The two adjusting nuts are used to clamp the upper and lower surfaces of the adjusting block, respectively.

10. The loading and unloading pipe cutting machine according to claim 1, characterized in that, Each of the receiving structures is provided with one or more U-shaped storage racks on its side; and a short material storage hopper is also provided downstream of the receiving structure near the laser cutting mechanism.

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