A production line for pipe end processing

Abstract

The application discloses a production line for pipe end machining of pipe materials, which comprises two sets of feeding racks which are arranged side by side and are identical in structure, pipe feeding devices for feeding the pipe bodies one by one are arranged on the two feeding racks, pipe body guide structures which are arranged obliquely are arranged on the feeding racks upstream of the pipe feeding devices, saw cutting machines which are distributed at the end portions of the feeding racks and are used for cutting the heads and the tails of the pipe bodies are arranged respectively, the feeding positions of the saw cutting machines are arranged correspondingly to the feeding directions of the pipe feeding devices, and positioning, clamping and removing mechanisms are arranged on the saw cutting machines. The heads and the tails of the steel pipes are cut by means of the feeding mode of feeding the steel pipes one by one, compared with the traditional feeding mode of feeding a plurality of steel pipes simultaneously, the process of aligning the pipe ends is saved, meanwhile, the pipe ends are cut by the saw cutting machines, the cutting speed is high, a large amount of time is saved, and the work efficiency is greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of seamless steel pipe end cutting technology, and particularly relates to a production line for pipe end processing. Background Technology

[0002] After the steel pipes are formed through a series of processes, they need to be transferred to the cutting equipment by a material feeding mechanism to cut off both ends. Currently, the existing material feeding mechanism is a structure that feeds multiple steel pipes in batches at the same time. Therefore, before the cutting off, the ends of multiple steel pipes need to be aligned (or flattened). The alignment process is complicated, especially when the lengths of the steel pipes are inconsistent, the alignment process takes a long time and affects the processing efficiency. In addition, at present, the simultaneous cutting of the ends of multiple steel pipes is done by band saw, which is slow and takes a long time, which also affects the processing efficiency. Summary of the Invention

[0003] This invention provides a production line for processing pipe ends, aiming to simplify processes and improve work efficiency.

[0004] To solve the above-mentioned technical problems, the technical solution of the present invention is: a production line for processing pipe ends, including two sets of feeding racks with the same structure and arranged side by side. Each of the two feeding racks is provided with a pipe feeding device for conveying pipes one by one. The feeding rack located upstream of the pipe feeding device is provided with an inclined pipe guiding structure.

[0005] It also includes two sawing machines distributed at the end of the feeding rack, which respectively cut off the head and tail of the pipe. The feeding position of the sawing machine is set to correspond to the feeding direction of the pipe feeding device. The sawing machine is equipped with a positioning, clamping and removing mechanism.

[0006] As an improvement, the pipe feeding device includes a plurality of conveying rollers disposed on the top of the feeding frame and a guiding clamping mechanism for conveying the pipes on the conveying rollers. The feeding frame is also provided with a swing-type top feeding mechanism for feeding the pipes onto and off the conveying rollers.

[0007] The lower end of the tube guide structure extends toward the swing top conveying mechanism. A tube blocking adjustment mechanism is provided on the feeding rack located at the lower end of the tube guide structure. The tube blocking adjustment mechanism, the tube guide structure, and the swing top conveying mechanism are staggered.

[0008] As a further improvement, the swing-type top-feeding mechanism includes multiple drive swing plates rotatably mounted on the feeding frame. All the drive swing plates are driven by a linkage-type synchronous drive mechanism. Each drive swing plate is provided with two connected wedge blocks, wherein the large end of one wedge block extends toward the tube guide structure. A stop bar is provided on the drive swing plate corresponding to the large end of the other wedge block. The stop bar is perpendicular to the drive swing plate and located upstream of the conveying roller.

[0009] The top of the feeding rack is also provided with a plurality of conveying blocks located upstream of the conveying roller. The conveying blocks are provided with inclined slopes, and the lower end of the inclined slopes is set close to the conveying roller and connected to the stop bar.

[0010] As a further improvement, the linkage-type synchronous drive mechanism includes a top rod fixed at one end to each of the drive swing plates, and a synchronous connecting rod hinged to the other end of all the top rods;

[0011] It also includes a first linear drive element hinged to the feeder, the drive end of the first linear drive element being hinged to the synchronous link.

[0012] As a further improvement, the guide clamping mechanism is rotatably mounted on the guide sleeve at the top of the feeding frame. The guide sleeves are arranged in pairs and distributed on both sides of the conveying roller. There are multiple pairs of the paired guide sleeves, which are arranged along the length direction of the feeding frame.

[0013] It also includes a slide block that is slidably mounted on the feed rack and driven by a second linear drive element, the slide block being equipped with a motor, and the motor driving a drive wheel.

[0014] As a further improvement, an encoder is rotatably mounted on the feeding rack at the position corresponding to the drive wheel; a sensor is fixedly mounted on the feed inlet of the sawing machine.

[0015] The positioning, clamping, and removing mechanism includes a positioning block disposed on the sawing machine and corresponding to the saw blade. A pressure block with a clamping inclined surface is slidably mounted on the positioning block and driven by a first driving element. Both the pressure block and the positioning block are provided with saw blade grooves. A bracket is provided on the sawing machine located on one side of the positioning block. A slide table is provided on the bracket and slidably mounted on the bracket towards the positioning block. A claw driven by a second driving element is slidably mounted on the slide table.

[0016] As a further improvement, the tube guiding structure consists of multiple guide rods arranged in parallel on the top of the feeding frame, with one end of the guide rod higher than the other, and the lower end of the guide rod closer to the conveying roller.

[0017] Each of the guide rods is equipped with a pad.

[0018] As a further improvement, the pipe blocking adjustment mechanism includes a rotating shaft located at the lower end of the pipe guiding structure and rotatably mounted in the length direction of the feeding rack. Multiple baffles are fixedly mounted on the rotating shaft, and a pad is installed on the working side of each baffle. The rotating shaft is driven by an adjustment drive mechanism disposed on the feeding rack.

[0019] As a further improvement, the adjustment drive mechanism includes a nut seat rotatably mounted on the feeding frame, a screw threaded onto the nut seat, one end of the screw having a handwheel and the other end extending toward the rotating shaft;

[0020] A hinge shaft is also fixedly installed on the screw. The hinge shaft is rotatably mounted on the fixed block, and a drive arm that is fixedly connected to the hinge shaft is fixed on the fixed block.

[0021] As an improvement, the feeding rack includes a first frame and a second frame, the tube guiding structure is disposed on the second frame, and the tube feeding device is disposed on the first frame;

[0022] The first frame is provided with a feed guide pipe at one end near the sawing machine. The sawing machine located downstream of the feed guide pipe is provided with two guide plates extending toward the saw blade. The sawing machine located between the two guide plates is provided with a roller.

[0023] The feeding rack located on the unloading side is provided with multiple support plates, each of which is provided with a positioning groove. The feeding rack located downstream of the support plates is provided with a blocking plate driven by a third linear drive element. The blocking plate moves in the width direction of the feeding rack. The feeding rack located upstream of the support plates is provided with a top block driven by a fourth linear drive element. The top block moves in the length direction of the feeding rack.

[0024] After adopting the above technical solution, the effect of the present invention is as follows:

[0025] The production line for pipe end processing includes two identical feeding racks arranged side-by-side. Each feeding rack is equipped with a pipe feeding device for conveying pipes one by one. The feeding rack upstream of the pipe feeding device has an inclined pipe guiding structure. It also includes two sawing machines located at the ends of the feeding racks, one for cutting the head and the other for cutting the tail of the pipes. The feeding position of the sawing machines corresponds to the feeding direction of the pipe feeding device. The sawing machines are equipped with a positioning, clamping, and removing mechanism. Thus, during use, the pipe guiding structure receives the produced steel pipes, and then the pipe feeding device feeds the steel pipes one by one from the pipe guiding structure into the sawing machine. The steel pipes are first conveyed, then the ends are cut off by a sawing machine. Next, a positioning, clamping, and removing mechanism clamps and positions the pipes, and removes the cut ends. Then, a pipe feeding device reverses the direction of the cut pipes and removes them from the sawing machine. The pipe feeding device then delivers the cut pipes to the pipe guide structure on the downstream feeding rack. Another pipe feeding device then feeds each cut pipe to another sawing machine, completing the tail-cutting process. Finally, this pipe feeding device moves each cut pipe out, repeating the process continuously.

[0026] In summary, this technical solution, by feeding the steel pipes one by one to complete the cutting of the head and tail, eliminates the need for aligning the pipe ends compared to the traditional method of feeding multiple steel pipes in batches at the same time. At the same time, the pipe ends are cut off by a sawing machine, which is fast and saves a lot of time, greatly improving work efficiency.

[0027] The pipe feeding device includes multiple conveying rollers mounted on top of the feeding rack and a guiding and clamping mechanism for conveying pipes on the conveying rollers. The feeding rack also has a swing-type top-feeding mechanism for feeding pipes onto and off the conveying rollers. The lower end of the pipe guiding structure extends towards the swing-type top-feeding mechanism. A pipe blocking adjustment mechanism is located on the feeding rack at the lower end of the pipe guiding structure. The pipe blocking adjustment mechanism, the pipe guiding structure, and the swing-type top-feeding mechanism are staggered. Thus, when transferring steel pipes, the pipe blocking adjustment mechanism blocks the steel pipes guided on the pipe guiding structure, and then the swing-type top-feeding mechanism continuously feeds the blocked steel pipes onto the conveying rollers one by one. After conveying, the steel pipe is fed into the cutting equipment via a guiding clamping mechanism for cutting (head cutting). Then, the guided clamping mechanism drives the head-cut steel pipe to move in the opposite direction, and the swing-type top-feeding mechanism moves the head-cut steel pipe to the downstream pipe guide structure. Then, the swing-type top-feeding mechanism on the downstream feeding rack completes the tail cutting of the steel pipe according to the above working principle. Simultaneously with the movement of the head-cut steel pipe, the swing-type top-feeding mechanism feeds the next steel pipe to be head-cut. Before the above operations, the position of the obstructed steel pipe is adjusted according to the diameter specification of the steel pipe via a pipe obstruction adjustment mechanism, so that the swing-type top-feeding mechanism can effectively and reliably feed single steel pipes. The single steel pipe feeding operation has strong continuity and can meet the feeding needs of pipes with different diameters.

[0028] The oscillating top-feeding mechanism includes multiple drive sway plates rotatably mounted on the feeding frame. All drive sway plates are driven by a linkage-type synchronous drive mechanism. Each drive sway plate has two connected wedge-shaped blocks, one of which has its large end extending towards the pipe guide structure. A stop bar is located on the drive sway plate corresponding to the large end of the other wedge. The stop bar is perpendicular to the drive sway plate and located upstream of the conveyor roller. The top of the feeding frame also has multiple supporting blocks located upstream of the conveyor roller. Each supporting block has an inclined surface, with the lower end of the inclined surface close to the conveyor roller and connected to the stop bar. Thus, when the steel pipe is located on the pipe guide structure, the synchronous drive mechanism drives all the drive sway plates to oscillate. While swinging, one of the wedge blocks pushes up a steel pipe on the pipe guide structure and slides towards the stop bar via the inclined surface on the wedge block. Then, the stop bar blocks the steel pipe. After that, the swing plate is driven to move in the opposite direction and reset. At this time, the blocked steel pipe falls onto the support block and is guided to the conveyor roller via the inclined surface on the support block. Then, the steel pipe is fed into and out of the cutting equipment by the guide clamping mechanism. After that, the swing plate is driven to swing and the cut steel pipe is conveyed to the downstream equipment via another wedge block. While conveying to the downstream equipment, it will drive the next steel pipe to be cut to be conveyed towards the conveyor roller. The structure is simple and the design is ingenious, which lays the foundation for continuous one-by-one feeding of pipes.

[0029] Because the linkage-type synchronous drive mechanism includes a top rod fixed at one end to each drive swing plate, and the other end of all the top rods are hinged to a synchronous connecting rod; it also includes a first linear drive element hinged to the feeding frame, and the drive end of the first linear drive element is hinged to the synchronous connecting rod. Thus, when the drive swing plate is driven to move, the first linear drive element drives the synchronous connecting rod to move, and the synchronous connecting rod drives all the top rods to move, thereby completing the swinging work of the drive swing on the feeding frame. The structure is simple and the synchronous drive of all drive swing plates is highly reliable.

[0030] The guide sleeves are rotatably mounted on the top of the feeding frame. The guide sleeves are arranged in pairs and distributed on both sides of the conveying roller. There are multiple pairs of guide sleeves arranged along the length of the feeding frame. The system also includes a slide block that is slidably mounted on the feeding frame and driven by a second linear drive element. The slide block is equipped with a motor, which drives a drive wheel. When the steel pipe is fed onto the conveying roller, the guide sleeves constrain and guide the length of the steel pipe. The second linear drive element drives the motor and drive wheel to approach the steel pipe. Then, through the rotation of the drive wheel and the contact between the drive wheel and the steel pipe, the steel pipe is conveyed into the cutting equipment. The structure is simple and has good guiding and conveying effects on the steel pipe.

[0031] Because an encoder is rotatably mounted on the feed rack corresponding to the drive wheel, and a sensor is fixedly mounted on the feed inlet of the sawing machine, the length of the steel pipe end entering the sawing machine is ensured through the cooperation of the sensor and the encoder, thus ensuring the quality of the steel pipe after cutting.

[0032] The positioning, clamping, and removing mechanism includes a positioning block mounted on the sawing machine and corresponding to the saw blade. A first driving element drives a pressure block with a pressing inclined surface, and both the pressure block and the positioning block have saw blade grooves. A bracket is mounted on the sawing machine on one side of the positioning block, and a slide table slides towards the positioning block. A claw driven by a second driving element is slidably mounted on the slide table. Thus, when the steel pipe is fed into the sawing machine to a suitable length, the positioning block and the pressure block cooperate to clamp the steel pipe. Then, the saw blade performs the cutting operation, and finally, the cut pipe end is removed by the cooperation of the slide table and the claw. The structure is simple, and the positioning of the steel pipe and the removal of the pipe end are effective.

[0033] The pipe guiding structure consists of multiple guide rods arranged in parallel on the top of the feeding frame. One end of the guide rod is higher than the other, with the lower end close to the conveying roller. This guide rods guide the steel pipe, resulting in a simple structure with high ease of assembly on the second support and excellent guiding effect on the steel pipe. Each guide rod is equipped with a pad, which contacts the steel pipe, making it easy to replace when worn.

[0034] The pipe blocking adjustment mechanism includes a rotating shaft located at the lower end of the pipe guiding structure and rotatably mounted along the length of the feeding rack. Multiple baffles are fixedly mounted on the rotating shaft, and a pad is installed on the working side of each baffle. The rotating shaft is driven by an adjustment drive mechanism set on the feeding rack. Thus, during operation, the steel pipe guided by the pipe guiding structure is blocked by all the baffles. When adjusting the blocking position of the steel pipe, the rotating shaft is driven to rotate by the adjustment drive mechanism. At the same time, the rotating shaft will drive all the baffles to swing synchronously. The structure is simple, and the blocking position adjustment is quick and convenient. The pads contact the blocked steel pipe, which facilitates replacement after wear.

[0035] The adjustment drive mechanism includes a nut seat rotatably mounted on the feed rack, a screw threaded onto the nut seat, a handwheel at one end of the screw, and the other end extending towards the rotating shaft; a hinge shaft is also fixedly mounted on the screw, the hinge shaft is rotatably mounted on a fixed block, and a drive arm fixedly connected to the rotating shaft is fixed on the fixed block. Thus, when the rotating shaft is driven to rotate, the handwheel is operated to drive the screw to rotate, the screw drives the hinge shaft and the fixed block to move, and during the movement, the drive arm swings and drives the rotating shaft to rotate. During the above process, the hinge shaft and the nut seat will rotate accordingly. The structure is simple, the driving effect on the rotating shaft is good, and the retention effect of the rotating shaft in the same fixed state is good.

[0036] Since the feeding rack includes a first frame and a second frame, the tube guiding structure is set on the second frame and the tube feeding device is set on the first frame, the first frame and the second frame facilitate the forming of the feeding rack, and at the same time facilitate the setting of the tube guiding structure and the tube feeding device on the feeding rack.

[0037] Because the first frame has a feed guide pipe at the end near the sawing machine, and the sawing machine downstream of the feed guide pipe has two guide plates extending towards the saw blade, and the sawing machine between the two guide plates has a roller, the feeding device guides the steel pipe being fed to the sawing machine through the cooperation of the feed guide pipe, guide plates and roller, so as to ensure that the steel pipe is accurately delivered to the sawing position of the sawing machine.

[0038] Because the feeding rack on the unloading side is equipped with multiple support plates, each support plate has a positioning groove, and the feeding rack downstream of the support plates is equipped with a blocking plate driven by a third linear drive element, the blocking plate moves in the width direction of the feeding rack. The feeding rack upstream of the support plates is equipped with a top block driven by a fourth linear drive element, the top block moves in the length direction of the feeding rack. Thus, after the steel pipe is cut off at the head and tail, the sawn steel pipe is fed to the support plate by the feeding device and positioned by the positioning groove. Then, the position of the steel pipe on the support plate is adjusted by the cooperation of the top block driven by the fourth linear drive element and the blocking plate, so as to facilitate subsequent centralized collection. Attached Figure Description

[0039] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0040] Figure 1 This is a schematic diagram of the structure of the present invention;

[0041] Figure 2 yes Figure 1 An enlarged schematic diagram of the two sets of feeding racks, their feeding devices, and the tube guiding structure working together;

[0042] Figure 3 yes Figure 1 A schematic diagram of the structure of the intermediate saw and the end of the feeding rack;

[0043] Figure 4 yes Figure 1 Schematic diagram of a single feeding rack;

[0044] Figure 5 yes Figure 4 A structural diagram from another angle;

[0045] Figure 6 yes Figure 5 A structural diagram from another angle;

[0046] Figure 7 This is an enlarged structural schematic diagram of the swing-type top-feeding mechanism and the guide clamping mechanism;

[0047] Figure 8 This is a schematic diagram of the structure of the swing-type top-feeding mechanism, guide rod, rotating shaft, baffle, conveying block, and stop bar.

[0048] Figure 9 This is a schematic diagram of the adjustment drive mechanism;

[0049] Figure 10 A schematic diagram of the positioning, clamping, and removing mechanism;

[0050] Wherein, 1-first frame; 101-conveying roller; 102-guide sleeve; 103-second linear drive element; 104-slide block; 105-motor; 106-drive wheel; 107-encoder mounting wheel; 108-feed guide tube; 109-support plate; 110-blocking plate; 111-fourth linear drive element; 112-top block; 2-second frame; 201-guide rod; 202-pad plate; 3-drive swing plate; 301-wedge block; 302-stop bar; 303-conveyor block; 304-top rod; 305-synchronization Linkage; 306-First linear drive element; 4-Rotating shaft; 401-Baffle; 402-Padded block; 403-Nut seat; 404-Screw; 405-Handwheel; 406-Hinge shaft; 407-Fixing block; 408-Drive arm; 5-Sawing machine; 501-Sensor; 502-Saw blade; 503-Guide plate; 504-Roller; 505-Positioning block; 506-First drive element; 507-Pressure block; 508-Saw blade groove; 509-Bracket; 510-Slide table; 511-Second drive element; 512-Pawl. Detailed Implementation

[0051] The present invention will be further described in detail below through specific embodiments.

[0052] like Figures 1 to 9 As shown, a production line for processing pipe ends includes two identical feeding racks arranged side by side. Each feeding rack is equipped with a pipe feeding device for conveying pipes one by one. The feeding rack upstream of the pipe feeding device is equipped with an inclined pipe guiding structure. The pipe guiding structure on the downstream feeding rack extends towards the pipe feeding device on the upstream feeding rack. The production line also includes two sawing machines 5 distributed at the ends of the feeding racks, which respectively cut off the head and tail of the pipes. The feeding position of the sawing machine 5 corresponds to the feeding direction of the pipe feeding device. The sawing machine is equipped with a positioning, clamping and removing mechanism.

[0053] The pipe feeding device includes multiple conveying rollers 101 mounted on the top of the feeding frame and a guiding and clamping mechanism for conveying pipes on the conveying rollers 101. The feeding frame is also equipped with a swing-type top-feeding mechanism for feeding and feeding pipes onto the conveying rollers 101. The lower end of the pipe guiding structure extends toward the swing-type top-feeding mechanism. A pipe blocking adjustment mechanism is provided on the feeding frame located at the lower end of the pipe guiding structure. The pipe blocking adjustment mechanism, the pipe guiding structure, and the swing-type top-feeding mechanism are staggered. In this scheme, the feeding frame includes a first frame 1 and a second frame 2 that cooperate with each other. The pipe guiding structure is mounted on the second frame 2, and the pipe feeding device is mounted on the first frame 1.

[0054] The swing-type top conveying mechanism includes multiple drive swing plates 3 rotatably mounted on the first frame 1. All drive swing plates 3 are driven by a linkage synchronous drive mechanism. Each drive swing plate 3 is provided with two connected wedge blocks 301. The large end of one wedge block 301 extends towards the pipe guiding structure. The drive swing plate 3 corresponding to the large end of the other wedge block 301 is provided with a stop bar 302. The stop bar 302 is set perpendicular to the drive swing plate 301 and is located upstream of the conveying roller 101. The top of the first frame 1 is also provided with multiple conveying blocks 303 located upstream of the conveying roller 101. The conveying block 303 is provided with an inclined slope. The lower end of the inclined slope is set close to the conveying roller 101 and connected to the stop bar 302. At the same time, when the drive swing plate 301 is in the initial state (not conveying the steel pipe), the top end of the stop bar 302 is set lower than the lower end of the inclined slope on the conveying block 303.

[0055] The linkage-type synchronous drive mechanism includes a top rod 304 fixed at one end to each drive swing plate 3, and a synchronous connecting rod 305 hinged to the other end of all the top rods 304; it also includes a first linear drive element 306 hinged to the first frame 1 and inclined, the drive end of the first linear drive element 306 being hinged to the synchronous connecting rod 305 (see...). Figure 5 ).

[0056] The guide clamping mechanism is rotatably mounted on the guide sleeve 102 at the top of the first frame 1. The guide sleeves 102 are arranged in pairs and distributed on both sides of the conveying roller 101. There are multiple pairs of guide sleeves 102 arranged along the length direction of the first frame 1. It also includes a slide block 104 slidably mounted on the first frame 1 and driven by the second linear drive element 103. The slide block 104 is equipped with a motor 105, which drives a drive wheel 106. An encoder (not shown in the figure) is also rotatably mounted on the first frame 1 at the position corresponding to the drive wheel 106. In order to avoid damage caused by direct contact between the encoder and the steel pipe, the encoder is mounted on an encoder mounting wheel 107, which is rotatably mounted on the first frame 1. A sensor 501 is fixedly mounted at the feed inlet of the sawing machine 5 (see Figure 3 In this design, the top of the conveying block 303 is positioned higher than the top of the guide sleeve 102; the first frame 1 is provided with a feed guide pipe 108 near the sawing machine 5 (see...). Figure 3 The sawing machine 5 located downstream of the feed guide pipe 108 is provided with two guide plates 503 extending toward the saw blade 502, and the sawing machine 5 located between the two guide plates 503 is provided with a roller 504.

[0057] The positioning, clamping, and removing mechanism includes a positioning block 505 disposed on the sawing machine 5 and corresponding to the saw blade 502. A pressure block 507, driven by a first driving element 506 and having a pressing inclined surface (not shown in the figure), is slidably mounted on the positioning block 505. Both the pressure block 507 and the positioning block 505 are provided with saw blade grooves 508. A bracket 509 is provided on the sawing machine 5 located on one side of the positioning block 505. A slide table 510 driven by a nut screw structure that slides towards the positioning block 505 is provided on the bracket 509. A claw 512 driven by a second driving element 511 is slidably mounted on the slide table 510. In this solution, the first driving element 506 and the second driving element 511 are both driving components such as cylinders or hydraulic cylinders.

[0058] The tube guiding structure consists of multiple guide rods 201 arranged in parallel on the top of the second frame 2. One end of each guide rod 201 is high and the other end is low. The lower end of the guide rod is close to the conveying roller. Each guide rod 201 is equipped with a pad 202. The guide rods 201 and the drive swing plate 3 are staggered and have overlapping portions in the width direction of the second frame 2.

[0059] The pipe blocking adjustment mechanism includes a rotating shaft 4 located at the lower end of the pipe guiding structure and rotatably mounted along the length of the second frame 2. Multiple baffles 401, offset from the guide rod 201 and the drive swing plate 3, are fixedly mounted on the rotating shaft 4. The top of each baffle 401 is higher than the pad 202, and a pad block 402 is mounted on its working side. The rotating shaft 4 is driven by an adjustment drive mechanism mounted on the first frame 1. The adjustment drive mechanism includes a nut seat 403 rotatably mounted on the first frame 1. A screw 404 is threaded onto the nut seat 403. One end of the screw 404 has a handwheel 405, and the other end extends towards the rotating shaft 4. A hinge shaft 406 is also fixedly mounted on the screw 404. The hinge shaft 406 is rotatably mounted on a fixed block 407. A drive arm 408, fixedly connected to the rotating shaft 4, is fixedly mounted on the fixed block 407 (see [link to relevant documentation]). Figure 9 ).

[0060] The feeding rack located on the unloading side (specifically on the first frame 1) is provided with multiple support plates 109, each of which is provided with a positioning groove (not shown in the figure). The first frame 1 located downstream of the support plate 109 is provided with a blocking plate 110 driven by a third linear drive element. The blocking plate 110 moves in the width direction of the first frame 1. The first frame 1 located upstream of the support plate 109 is provided with a top block 112 driven by a fourth linear drive element 111. The top block 112 moves in the length direction of the first frame 1. The first linear drive element 306, the second linear drive element 103, the third linear drive element and the fourth linear drive element are all driving components such as cylinders or hydraulic cylinders.

[0061] The above-described embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications and alterations made to the technical solutions of the present invention without departing from the spirit of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims

1. A production line for processing pipe ends, characterized in that: It includes two sets of identical feeding racks arranged side by side. Each feeding rack is equipped with a pipe feeding device for conveying pipes one by one. Each feeding rack located upstream of the pipe feeding device is equipped with an inclined pipe guiding structure. It also includes two sawing machines distributed at the ends of the feeding rack, which respectively cut off the head and tail of the pipe. The feeding position of the sawing machine is set to correspond to the feeding direction of the pipe feeding device. The sawing machine is equipped with a positioning, clamping and removing mechanism. The pipe feeding device includes multiple conveying rollers set at the top of the feeding rack and a guiding and clamping mechanism for conveying the pipes on the conveying rollers. The feeding rack is also equipped with a swing-type top-feeding mechanism for feeding the pipes onto and off the conveying rollers. The lower end of the tube guide structure extends toward the swing-type top conveying mechanism. A tube blocking adjustment mechanism is provided on the feeding rack located at the lower end of the tube guide structure. The tube blocking adjustment mechanism, the tube guide structure, and the swing-type top conveying mechanism are staggered. The swing-type top conveying mechanism includes multiple drive swing plates rotatably mounted on the feeding rack. All drive swing plates are driven by a linkage synchronous drive mechanism. Each drive swing plate is provided with two connected wedge blocks. The large end of one wedge block extends toward the tube guide structure. A stop bar is provided on the drive swing plate corresponding to the large end of the other wedge block. The stop bar is perpendicular to the drive swing plate and located upstream of the conveying roller. The top of the feeding rack is also provided with a plurality of conveying blocks located upstream of the conveying roller. The conveying blocks are provided with inclined slopes. The lower end of the inclined slopes is located close to the conveying roller and connected to the stop bar. The linkage synchronous drive mechanism includes a top rod fixed at one end to each of the drive swing plates, and the other end of all the top rods is hinged to a synchronous connecting rod. It also includes a first linear drive element hinged to the feeder, the drive end of the first linear drive element being hinged to the synchronous link; The positioning, clamping, and removing mechanism includes a positioning block disposed on the sawing machine and corresponding to the saw blade. A pressure block with a clamping inclined surface is slidably mounted on the positioning block and driven by a first driving element. Both the pressure block and the positioning block are provided with saw blade grooves. A bracket is provided on the sawing machine located on one side of the positioning block. A slide table is provided on the bracket and slidably mounted on the bracket towards the positioning block. A claw driven by a second driving element is slidably mounted on the slide table.

2. The production line for pipe end processing as described in claim 1, characterized in that: The guiding clamping mechanism is rotatably mounted on the guide sleeve at the top of the feeding frame. The guide sleeves are arranged in pairs and distributed on both sides of the conveying roller. There are multiple pairs of the paired guide sleeves, which are arranged along the length direction of the feeding frame. It also includes a slide block that is slidably mounted on the feed rack and driven by a second linear drive element, the slide block being equipped with a motor, and the motor driving a drive wheel.

3. The production line for pipe end processing as described in claim 2, characterized in that: An encoder is rotatably mounted on the feeding rack at the position corresponding to the drive wheel; a sensor is fixedly mounted on the feed inlet of the sawing machine.

4. The production line for pipe end processing as described in claim 3, characterized in that: The tube guiding structure consists of multiple guide rods arranged in parallel on the top of the feeding frame, with one end of the guide rod higher than the other, and the lower end of the guide rod closer to the conveying roller. Each of the guide rods is equipped with a pad.

5. A production line for processing pipe ends as described in any one of claims 2 to 4, characterized in that: The pipe blocking adjustment mechanism includes a rotating shaft located at the lower end of the pipe guiding structure and rotatably mounted on the length direction of the feeding rack. Multiple baffles are fixedly mounted on the rotating shaft, and a pad is installed on the working side of each baffle. The rotating shaft is driven by an adjustment drive mechanism set on the feeding rack.

6. The production line for pipe end processing as described in claim 1, characterized in that: The feeding rack includes a first frame and a second frame, the tube guiding structure is disposed on the second frame, and the tube feeding device is disposed on the first frame; The first frame is provided with a feed guide pipe at one end near the sawing machine. The sawing machine located downstream of the feed guide pipe is provided with two guide plates extending toward the saw blade. The sawing machine located between the two guide plates is provided with a roller. The feeding rack located on the unloading side is provided with multiple support plates, each of which is provided with a positioning groove. The feeding rack located downstream of the support plates is provided with a blocking plate driven by a third linear drive element. The blocking plate moves in the width direction of the feeding rack. The feeding rack located upstream of the support plates is provided with a top block driven by a fourth linear drive element. The top block moves in the length direction of the feeding rack.

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