A pipe end cutting process

Abstract

The present invention discloses a pipe end cutting process, which includes the following steps implemented in sequence: S1, pipe guiding; S2, pipe transfer one by one; S3, conveying, sawing at one end; S4, returning; S5, secondary transfer; S6, tertiary transfer; S7, tertiary transfer, sawing at the other end; S8, turning out; S9, during the process of S5 to S8, the next pipe to be cut is synchronously processed according to the processes S1 to S4; S10, continuous cutting operation is performed according to the processes S1 to S9. The process realizes the pipe (steel pipe) feeding one by one and the cutting and tail cutting of the pipe after loading. Compared with the traditional method of feeding multiple steel pipes in batches at the same time, the process of aligning the pipe ends is omitted, which helps to improve work efficiency. At the same time, the cutting and tail cutting work is also a single cutting, the cutting speed is fast, which can effectively save a lot of time, thereby greatly improving work efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of seamless steel pipe end cutting, and in particular relates to a pipe end cutting process. Background Art

[0002] After the steel pipe is formed through a series of processes, it needs to be transferred to the cutting equipment through the relevant mechanism for transferring and loading the steel pipe, and the ends of the steel pipe need to be trimmed. At present, the relevant mechanism for transferring and loading the steel pipe is a structure for batch feeding of multiple steel pipes at the same time. Therefore, before the trimming and tailing work, it is necessary to align the ends of the multiple steel pipes (or flatten them). The alignment process is complicated, especially when the lengths of the steel pipes are inconsistent. The alignment process takes a long time, which affects the processing efficiency. In addition, at this stage, the trimming and tailing of the ends of multiple steel pipes at the same time is completed by a band saw, which has a slow cutting speed and a long cutting time, which also affects the processing efficiency. Summary of the Invention

[0003] The embodiment of the present invention provides a pipe end cutting process to simplify the process and improve work efficiency.

[0004] To solve the above technical problems, the technical solution of the embodiment of the present invention is: a pipe end cutting process, comprising the following steps implemented in sequence:

[0005] S1. Pipe guiding: The first connecting and guiding mechanism is used to guide and block the pipe formed by the pipe production equipment;

[0006] S2, transferring pipes one by one: transferring the pipes on the first connecting and guiding mechanism to the first conveying mechanism by the first pipe pushing mechanism;

[0007] S3, conveying and sawing at one end: conveying a single pipe to the sawing device through the first conveying mechanism, and cutting the pipe head or tail through the sawing device;

[0008] S4, returning to the original position: the pipe after the head or tail is cut is separated from the sawing device by the first conveying mechanism;

[0009] S5, secondary transfer: The first pipe feeding mechanism transfers the pipe after the head or tail is cut to the second connecting guide mechanism downstream;

[0010] S6, three-way transfer: the second pipe pushing mechanism transfers the single pipe on the second connecting guide mechanism to the second conveying mechanism;

[0011] S7, four-time conveying and sawing at the other end: conveying the pipe after head or tail trimming to another sawing device through the second conveying mechanism, and performing tail trimming or head trimming on the pipe through the sawing device;

[0012] S8, transfer out: the pipes after the head and tail are transferred out by the second pipe feeding mechanism;

[0013] S9. During the process of S5 to S8, the next pipe to be cut is processed synchronously according to the process of S1 to S4;

[0014] S10. Perform continuous cutting operations according to the steps S1 to S9.

[0015] As an improvement, the first pipe pushing mechanism and the second pipe pushing mechanism are both: a stepped vertical pushing mechanism, or: a swinging pushing mechanism; the first conveying mechanism and the second conveying mechanism are both: a clamping conveying mechanism or a roller conveying mechanism;

[0016] The swing-type top-feeding mechanism is used in conjunction with the clamp-feeding conveying mechanism, and the stepped vertical top-feeding mechanism is used in conjunction with the roller-feeding conveying mechanism.

[0017] As a further improvement, the swing-type top-feeding mechanism includes a first frame, on which a plurality of supporting rollers and a plurality of driving swing plates are rotatably mounted, all of the driving swing plates are driven by a connecting rod-type synchronous driving mechanism, each of the driving swing plates is provided with two wedge-shaped blocks arranged in a connected manner, wherein the large end of one of the wedge-shaped blocks extends toward the first connecting guide mechanism, and a gear lever is provided on the driving swing plate at a position corresponding to the large end of the other wedge-shaped block, the gear lever being arranged perpendicular to the driving swing plate and located upstream of the supporting roller;

[0018] The top of the first frame is further provided with a plurality of supporting blocks located upstream of the supporting rollers. The supporting blocks are provided with inclined surfaces. The lower ends of the inclined surfaces are arranged close to the supporting rollers and connected to the gear levers.

[0019] As a further improvement, the connecting rod type synchronous drive mechanism includes a top rod fixed at one end to each of the driving swing plates, and the other ends of all the top rods are hinged to a synchronous connecting rod; and further includes a first linear drive element hinged to the first frame, and the driving end of the first linear drive element is hinged to the synchronous connecting rod.

[0020] The clamping conveying mechanism includes a guide sleeve rotatably mounted on the top of the first frame, the guide sleeves are arranged in pairs and distributed on both sides of the supporting roller; it also includes a slide slidably mounted on the first frame and driven by a second linear drive element, the slide is provided with a motor, and the motor drives a driving wheel; an encoder is rotatably mounted on the first frame at a position corresponding to the driving wheel; a sensor is fixedly mounted on the feed port of the sawing equipment.

[0021] As a further improvement, the first connecting guide mechanism and the second connecting guide mechanism both include a guide frame, a guide rod at the top of the guide frame is inclined toward the first frame body, the lower end of the guide rod is arranged close to the supporting roller, and a pipe blocking adjustment mechanism is provided on the guide frame located at the lower end of the guide rod.

[0022] As a further improvement, the pipe blocking and adjusting mechanism includes a rotating shaft located at the lower end of the guide rod and rotatably mounted on the length direction of the guide frame, with a plurality of baffles fixedly mounted on the rotating shaft; the rotating shaft is driven by an adjusting drive mechanism provided on the first frame;

[0023] The adjustment drive mechanism includes a nut seat rotatably mounted on the first frame, a screw threaded on the nut seat, a handwheel at one end of the screw and the other end extending toward the rotating shaft; an articulated shaft is also fixedly mounted on the screw, the articulated shaft is rotatably mounted on a fixed block, and a drive arm fixedly connected to the rotating shaft is fixed on the fixed block.

[0024] As a further improvement, the stepped vertical pushing mechanism includes a second frame and a plurality of V-shaped conveying rollers rotatably mounted on the second frame. A third linear drive element is also vertically fixedly mounted on the second frame. The driving end of the third linear drive element is installed with a mounting seat that is guided and slidably mounted on the second frame. A pushing plate is installed on the mounting seat. The top of the pushing plate is provided with two inclined guide surfaces with the same inclination direction. The lower end of the inclined guide surface extends to the side away from the first connecting guide mechanism, and the lower end of the inclined guide surface close to the first connecting guide mechanism is arranged corresponding to the bottom of the V-shaped groove on the conveying roller.

[0025] As a further improvement, the first connecting guide mechanism and the second connecting guide mechanism each include a bracket, a top of the bracket is provided with an inclined guide rod, a lower end of the guide rod is provided close to the second frame, and a stopper is provided at the lower end of the bracket protruding in the height direction;

[0026] The push plate close to the first connecting guide mechanism protrudes from the side of the second frame, and in the width direction of the second frame, the lower end of the first connecting guide mechanism overlaps with the protruding end of the push plate.

[0027] As a further improvement, the roller conveying mechanism includes a belt transmission mechanism that drives all the conveying rollers, and the conveying rollers and the top conveying plate are arranged in the longitudinal direction of the second body; and a support plate is installed on the second frame on both sides of each conveying roller;

[0028] A first detection switch protruding toward the bracket is installed on the side of the second frame; multiple second detection switches are also installed on the second frame, and the second detection switches are arranged on one side of the conveying roller and corresponding to the bottom of the V-groove on the conveying roller.

[0029] As an improvement, the sawing equipment includes a circular saw machine, and the circular saw machine is provided with a positioning, clamping and removing mechanism and a guiding mechanism;

[0030] The positioning, clamping and removing mechanism includes a positioning block provided on the circular saw machine and corresponding to the saw blade, a pressure block driven by a first driving element and provided with a pressing inclined surface being slidably mounted on the positioning block, and a saw blade groove being provided on both the pressure block and the positioning block; a support frame is provided on the circular saw machine located on one side of the positioning block, the support frame is provided with a slide which slides toward the positioning block, and a removing claw driven by a second driving element being slidably mounted on the slide;

[0031] The guide mechanism includes a plurality of rollers located upstream of the saw blade, guide plates are provided on both sides of the rollers, and the feed ends of the two guide plates are provided with inclined guiding bevels.

[0032] After adopting the above technical solution, the effects of the embodiment of the present invention are:

[0033] The pipe end cutting process includes the following steps to be implemented in sequence: S1, pipe guiding: guiding and blocking the pipe formed by the pipe production equipment through the first connecting and guiding mechanism; S2, pipe transfer: transferring the pipe on the first connecting and guiding mechanism to the first conveying mechanism through the first pipe pushing mechanism; S3, conveying and one-end sawing: conveying the single pipe to the sawing device through the first conveying mechanism, and cutting the head or tail of the pipe through the sawing device; S4, returning: separating the pipe after cutting the head or tail from the sawing device through the first conveying mechanism; S5, secondary transfer: removing the pipe after cutting the head or tail through the first pipe pushing mechanism The pipe is transferred to the second connecting guide mechanism downstream; S6, three transfers: the single pipe on the second connecting guide mechanism is transferred to the second conveying mechanism through the second pipe pushing mechanism; S7, four conveyings, sawing at the other end: the pipe with the head or tail cut is transported to another sawing device through the second conveying mechanism, and the pipe is cut or head cut by the sawing device; S8, transfer out: the pipe with the head and tail cut is transferred out through the second pipe pushing mechanism; S9, during the process of S5 to S8, the next pipe to be cut is synchronously processed according to the processes S1 to S4; S10, continuous cutting operation is performed according to the processes S1 to S9. The above process realizes the loading of pipes (steel pipes) one by one, and the cutting of heads and tails of the loaded pipes. Compared with the traditional method of feeding multiple steel pipes in batches at the same time, the process of aligning the pipe ends is eliminated, which helps to improve work efficiency. At the same time, the cutting of heads and tails is also a single cutting, with a fast cutting speed, which can effectively save a lot of time and greatly improve work efficiency.

[0034] Since the first pipe jacking mechanism and the second pipe jacking mechanism are both: stepped vertical jacking mechanism, or: swinging jacking mechanism; the first conveying mechanism and the second conveying mechanism are both: clamping conveying mechanism or roller conveying mechanism; the swinging jacking mechanism is used in conjunction with the clamping conveying mechanism, and the stepped vertical jacking mechanism is used in conjunction with the roller conveying mechanism, the above-mentioned coordination method is conducive to structural mutual avoidance, which provides a guarantee for effective and non-interference loading.

[0035] Since the swing-type lifting mechanism includes a first frame, a plurality of supporting rollers and a plurality of driving swing plates are rotatably installed on the first frame, and all the driving swing plates are driven by a connecting rod type synchronous driving mechanism, and each driving swing plate is provided with two connected wedge blocks, and the large end of one wedge block extends toward the first connecting guide mechanism, and a gear rod is provided on the driving swing plate corresponding to the large end of the other wedge block, and the gear rod is arranged perpendicular to the driving swing plate and is located upstream of the supporting roller; the top of the first frame is also provided with a plurality of supporting blocks located upstream of the supporting roller, and the supporting blocks are provided with an inclined surface, and the lower end of the inclined surface is arranged close to the supporting roller and connected with the gear rod, so that when the steel pipe is located on the first connecting guide mechanism, the synchronous driving mechanism drives all the driving swing plates to swing, and while swinging, one of the wedge blocks will lift up the first connecting guide mechanism. The steel pipe is then transported to the conveyor belt by means of a swing plate, which is driven by the guide rail to move the steel pipe to the conveyor belt, and then the steel pipe is transported to the conveyor belt by means of a swing plate.

[0036] Since the connecting rod type synchronous drive mechanism includes a top rod with one end fixed on each driving swing plate, the other end of all the top rods is hinged with a synchronous connecting rod; it also includes a first linear drive element hinged on the first frame, and the driving end of the first linear drive element is hinged together with the synchronous connecting rod, so that when driving the driving swing plate to move, the first linear drive element drives the synchronous connecting rod to move, and the synchronous connecting rod will drive all the top rods to move, thereby completing the driving swing on the feeding rack. The structure is simple and the reliability of the synchronous drive of all driving swing plates is high.

[0037] Since the clamping conveying mechanism includes a guide sleeve rotatably mounted on the top of the first frame, the guide sleeves are arranged in pairs and distributed on both sides of the supporting roller; it also includes a slide slidably mounted on the first frame and driven by a second linear drive element, the slide is provided with a motor, and the motor drives a driving wheel; an encoder is rotatably mounted on the first frame at a position corresponding to the driving wheel; a sensor is fixedly installed on the feed port of the sawing equipment, so that when the steel pipe is delivered to the supporting roller, the guide sleeve is used to constrain and guide the length direction of the steel pipe, and the second linear drive element is used to drive the motor and the driving wheel close to the steel pipe. Thereafter, the steel pipe is transported into the cutting equipment through the rotation of the driving wheel and the contact between the driving wheel and the steel pipe. The structure is simple and the guiding and conveying effect on the steel pipe is good; through the cooperation of the sensor and the encoder, the length of the steel pipe end entering the sawing equipment is guaranteed, thereby ensuring the quality of the steel pipe after cutting.

[0038] Since the first connecting guide mechanism and the second connecting guide mechanism both include a guide frame, the top of the guide frame is inclined toward the first frame body, the lower end of the guide rod is arranged close to the supporting roller, and a pipe blocking adjustment mechanism is provided on the guide frame located at the lower end of the guide rod; the pipe blocking adjustment mechanism includes a rotating shaft located at the lower end of the guide rod and rotatably installed in the length direction of the guide frame, and a plurality of baffles are fixedly installed on the rotating shaft; the rotating shaft is driven by an adjusting drive mechanism arranged on the first frame; the adjusting drive mechanism includes a nut seat rotatably installed on the first frame, and a screw rod is threadedly matched on the nut seat, one end of the screw rod is provided with a hand wheel, and the other end extends in the direction of the rotating shaft; a hinge shaft is also fixedly installed on the screw, and the hinge shaft is rotatably installed on the fixed block, A driving arm fixedly connected to the rotating shaft is fixed on the fixed block, so that during work, the steel pipes coming out of the steel pipe production equipment are guided by the guide rod, and the guided steel pipes are blocked by all baffles. When the blocking position of the steel pipe is adjusted according to work needs, the rotating shaft is driven to rotate by adjusting the driving mechanism, specifically: the operating handwheel drives the screw to rotate, and the screw drives the articulated shaft and the fixed block to move. During the movement, the driving arm swings and drives the rotating shaft to rotate, thereby realizing synchronous swinging of all baffles. In the above process, the articulated shaft and the nut seat will rotate accordingly, the structure is simple, the driving effect of the rotating shaft is good, and the blocking position of the steel pipe is adjusted quickly and conveniently; at the same time, the rotating shaft has a good effect of maintaining the same fixed state.

[0039] Since the stepped vertical pushing mechanism includes a second frame and a plurality of V-shaped conveying rollers rotatably mounted on the second frame, a third linear driving element is also vertically fixedly mounted on the second frame, and the driving end of the third linear driving element is installed with a mounting seat which is guide-sliding mounted on the second frame, and a pushing plate is installed on the mounting seat, and the top of the pushing plate is provided with two inclined guide surfaces with the same inclined direction, and the lower end of the inclined guide surface extends to the side away from the first connecting guide mechanism, and the lower end of the inclined guide surface close to the first connecting guide mechanism is arranged corresponding to the bottom of the V-shaped groove on the conveying roller, so that when the steel pipes are loaded one by one, the pushing plate is driven to rise by the third linear driving element, and since a blocking vertical surface is formed between the lower end of the upstream inclined guide surface and the high end of the downstream inclined guide surface, during the rising process, the pushing plate will lift up a steel pipe on the first connecting guide mechanism and slide through the inclined guide surface. It falls to the blocking surface, and then the third linear drive element drives the top feeding plate to descend. During the descending process, the steel pipe being pushed falls onto the conveying roller. After that, the steel pipe is transported into the sawing equipment through the conveying roller, and the cutting and output of one end of the steel pipe are completed. After that, the third linear drive element drives the top feeding plate to rise again, and the downstream inclined guide surface will lift the cut steel pipe on the conveying roller. During the continuous lifting process, the cut steel pipe is transported to the second connecting guide mechanism through the inclined guide surface. After that, the cutting of the other end of the steel pipe is completed according to the above process; in the process of transporting to the second connecting guide mechanism, the upstream inclined guide surface will transfer the next steel pipe to be cut to the conveying roller. According to the above process, the steel pipe is continuously fed and the end is cut. It has a simple structure and ingenious design, which lays the foundation for continuous feeding and end cutting of pipes one by one.

[0040] Since the first connecting guide mechanism and the second connecting guide mechanism both include brackets, an inclined guide rod is provided on the top of the bracket, the lower end of the guide rod is arranged close to the second frame, and the lower end of the bracket is provided with a stop block protruding in the height direction; the top delivery plate close to the first connecting guide mechanism protrudes from the side of the second frame, and in the width direction of the second frame, the lower end of the first connecting guide mechanism overlaps with the protruding end of the top delivery plate, so that the steel pipe is guided toward the second frame by the inclined guide rod, and the steel pipe is blocked by the stop block. The protruding setting of the top delivery plate and the overlapping setting of the lower end of the first connecting guide mechanism and the protruding end of the top delivery plate facilitate the steel pipe to slide to the overlapping position, thereby providing a guarantee for the effective loading of pipes one by one.

[0041] Since the roller conveying mechanism includes a belt transmission mechanism that drives all conveying rollers, the conveying rollers and the top feeding plate are arranged in the longitudinal direction of the second body; a support plate is installed on the second frame on both sides of each conveying roller; a first detection switch protruding toward the bracket is installed on the side of the second frame; a plurality of second detection switches are also installed on the second frame, and the second detection switch is arranged on one side of the conveying roller and corresponds to the bottom of the V-groove on the conveying roller, so that the conveying roller is driven to rotate through the belt transmission mechanism, and then the input and output of the steel pipe into the sawing equipment are completed, and the steel pipe is detected on the first connecting guide mechanism, the second connecting guide mechanism and the conveying roller by the first detection switch and the second detection switch to ensure accurate loading of the steel pipe; the conveyed steel pipe is auxiliary supported by the support plate to prevent the steel pipe from slipping from the conveying roller.

[0042] Since the sawing equipment includes a circular saw machine, the circular saw machine is provided with a positioning, clamping and removing mechanism and a guide mechanism, so that during the transportation of the conveyor roller, the conveyed pipe is accurately guided to the saw blade position through the guide mechanism, and the positioning, clamping and removing mechanism is used to position the pipe before sawing and remove the end of the steel pipe after sawing, laying the foundation for subsequent normal work.

[0043] Since the positioning, clamping and removing mechanism includes a positioning block arranged on the circular saw machine and corresponding to the saw blade, a pressure block driven by a first driving element and provided with a clamping inclined surface is slidably installed on the positioning block, and a saw blade groove is provided on the pressure block and the positioning block; a support frame is provided on the circular saw machine on one side of the positioning block, and a slide table sliding toward the positioning block is provided on the support frame, and a pusher claw driven by a second driving element is slidably installed on the slide, so that when the steel pipe is transported to the appropriate length in the circular saw machine, the steel pipe is clamped by the cooperation of the positioning block and the pressure block, and then the saw blade performs the cutting work, and then the cut pipe end is removed by the cooperation of the slide table and the pusher claw, the structure is simple, and the positioning of the steel pipe and the removal effect of the pipe end after sawing are good.

[0044] Since the guide mechanism includes multiple rollers located upstream of the saw blade, guide plates are provided on both sides of the rollers, and the feed ends of the two guide plates are provided with inclined guide bevels, during the conveying process of the conveyor rollers, the pipes are guided into the circular saw machine by the guide bevels and the guide plates. The structure is simple and the guiding effect is good. The pipes entering the circular saw machine are rolled by the rollers, which helps to reduce friction, improve conveying smoothness and reduce wear on the pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The present invention will be further described below with reference to the accompanying drawings and examples.

[0046] Figure 1 is a process flow chart of an embodiment of the present invention;

[0047] Figure 2 is realized Figure 1 A schematic diagram of the structure of the sawing equipment, the swing-type top-feeding mechanism, the clamping-type conveying mechanism, the first connecting guide mechanism and the second connecting guide mechanism used in the process;

[0048] Figure 3 yes Figure 2 An enlarged schematic diagram of the structure after the sawing equipment is removed;

[0049] Figure 4 yes Figure 2 A schematic diagram of the structure of the middle circular saw cooperating with the end of the first frame;

[0050] Figure 5 yes Figure 4 Schematic diagram of the structure of a medium circular saw machine;

[0051] Figure 6 yes Figure 3 An enlarged schematic diagram of the structure of the middle clamping conveying mechanism;

[0052] Figure 7 yes Figure 6 Schematic diagram of the structure of the middle pipe blocking adjustment mechanism;

[0053] Figure 8 yes Figure 7 Schematic diagram of the structure of the middle connecting rod type synchronous drive mechanism;

[0054] Figure 9 yes Figure 8 A partial top view of

[0055] Figure 10 is realized Figure 1 A schematic diagram of the structure of the sawing equipment, the stepped vertical push-up mechanism, the roller-type conveying mechanism, the first connecting guide mechanism and the second connecting guide mechanism used in the process;

[0056] Figure 11 yes Figure 10 A magnified view of one end;

[0057] Figure 12 yes Figure 11 A schematic diagram of the structure of the cooperation between the second frame, the stepped vertical top feeding mechanism and the roller-type conveying mechanism;

[0058] Figure 13 yes Figure 12 A top view of

[0059] Among them, 1-first frame; 101-carrying block; 102-inclined slope; 103-first linear drive element; 104-guide sleeve; 105-second linear drive element; 106-slide; 107-motor; 108-drive wheel; 109-encoder mounting wheel; 2-drive swing plate; 201-wedge block; 202-gear lever; 203-thrust rod; 204-synchronizing connecting rod; 3-support roller; 4-circular saw; 401-sensor; 402-positioning block; 403-first drive element; 404-pressing block; 405-saw blade slot; 406-support frame; 407-slide; 408-second drive element; 409-pull claw; 410-roller; 411-guide plate; 412-guide bevel; 413-saw blade; 5-guide frame; 501-guide rod; 502-rotating shaft; 503-baffle; 504-nut seat; 505-screw; 506-handwheel; 507-articulated shaft; 508-fixed block; 509-driving arm; 510-pad; 6-second frame; 601-third linear drive element; 602-mounting seat; 603-top plate; 604-inclined guide surface; 605-conveying roller; 606-motor; 607-support plate; 608-first detection switch; 609-second detection switch; 610-pulley guard; 611-guide slide; 612-blocking facade; 613-pulley; 614-extension block; 7-bracket; 701-guide rod; 702-block; 8-placement rack; 801-constraint positioning plate; 802-cylinder; 803-top block; 804-blocking plate; 9-pipe. DETAILED DESCRIPTION

[0060] The present invention is further described in detail below through specific examples.

[0061] like Figure 1 As shown, a pipe end cutting process includes the following steps performed in sequence:

[0062] S1. Pipe guiding: The first connecting and guiding mechanism is used to guide and block the pipe formed by the pipe production equipment;

[0063] S2, pipe transfer: the first pipe pushing mechanism transfers the pipes on the first connecting and guiding mechanism to the first conveying mechanism;

[0064] S3, conveying and sawing at one end: conveying the single pipe to the sawing equipment through the first conveying mechanism, and cutting the pipe head or tail through the sawing equipment;

[0065] S4, return: the pipe after cutting head or tail is separated from the sawing equipment through the first conveying mechanism;

[0066] S5, secondary transfer: The first pipe feeding mechanism transfers the pipe after the head or tail is cut to the second connecting guide mechanism downstream;

[0067] S6, three-way transfer: the second pipe pushing mechanism transfers the single pipe on the second connecting guide mechanism to the second conveying mechanism;

[0068] S7, four-step transport, sawing at the other end: transporting the pipe after head or tail trimming to another sawing device through the second transport mechanism, and then performing the tail trimming or head trimming operation on the pipe through the sawing device;

[0069] S8, transfer out: transfer the pipes after cutting the head and tail through the second pipe feeding mechanism; S9,

[0070] During the process of S5 to S8, the next pipe to be cut is processed synchronously according to the process of S1 to S4;

[0071] S10. Perform continuous cutting operations according to the steps S1 to S9.

[0072] In this solution, the first pipe top feeding mechanism and the second pipe top feeding mechanism are both: step-type vertical top feeding mechanism, or: swing-type top feeding mechanism; the first conveying mechanism and the second conveying mechanism are both: clamp-type conveying mechanism or roller-type conveying mechanism; the swing-type top feeding mechanism is used in conjunction with the clamp-type conveying mechanism, and the step-type vertical top feeding mechanism is used in conjunction with the roller-type conveying mechanism (see Figure 1 and Figure 10 ).

[0073] like Figures 1 to 9 As shown in common, the swing-type top-feeding mechanism includes a first frame 1, on which a plurality of equal-diameter supporting rollers 3 and a plurality of driving swing plates 2 are rotatably mounted, and all driving swing plates 2 are driven by a connecting rod-type synchronous driving mechanism, and each driving swing plate 2 is provided with two connected wedge blocks 201, wherein the large end of one wedge block 201 extends toward the first connecting guide mechanism, and a shift rod 202 is provided on the driving swing plate 2 at a position corresponding to the large end of the other wedge block 201, and the shift rod 202 is arranged perpendicular to the driving swing plate 2 and is located upstream of the supporting roller 3; a plurality of supporting blocks 101 located upstream of the supporting roller 3 are also provided on the top of the first frame 1, and an inclined surface 102 is provided on the supporting block 101, and the lower end of the inclined surface 102 is arranged close to the supporting roller 3 and is connected with the shift rod 202 in the width direction of the first frame 1.

[0074] The connecting rod type synchronous drive mechanism includes a top rod 203 fixed at one end on each driving swing plate 2, and the other end of all the top rods 203 is hinged with a synchronous connecting rod 204; it also includes a first linear drive element 103 (such as: a cylinder or an oil cylinder, etc.) hinged on the first frame 1, and the driving end of the first linear drive element 103 is hinged together with the synchronous connecting rod 204; the clamping conveying mechanism includes a guide sleeve 104 rotatably mounted on the top of the first frame 1, and the guide sleeves 104 are arranged in pairs and distributed on both sides of the supporting roller 3; it also includes a slide 106 slidably mounted on the first frame 1 and driven by a second linear drive element 105 (such as: a cylinder or an oil cylinder, etc.), the slide 106 is provided with a motor 107, and the motor 107 drives a driving wheel 108; an encoder 109 is rotatably mounted on the first frame 1 at a position corresponding to the driving wheel 108. In this solution, in order to avoid direct contact between the encoder and the pipe, the encoder is rotatably mounted on the encoder mounting wheel 109 (see Figure 6 ) on; a sensor 401 is fixedly installed on the feed port of the sawing device.

[0075] The first connecting guide mechanism and the second connecting guide mechanism cooperating with the swing-type top feeding mechanism both include a guide frame 5, a guide rod 501 arranged at the top of the guide frame 5 inclined toward the first frame body 1, the lower end of the guide rod 501 is arranged close to the supporting roller 3, and a pipe blocking adjustment mechanism is provided on the guide frame 5 at the lower end of the guide rod 501; the pipe blocking adjustment mechanism includes a rotating shaft 502 located at the lower end of the guide rod 501 and rotatably mounted in the length direction of the guide frame 5, a plurality of baffles 503 are fixedly mounted on the rotating shaft 502, and the working side of the baffle 503 is provided with a A pad 510 is provided; the rotating shaft 502 is driven by an adjusting drive mechanism provided on the first frame 1; the adjusting drive mechanism includes a nut seat 504 rotatably mounted on the first frame 1, and a screw 505 is threadedly fitted on the nut seat 504, one end of the screw 505 is provided with a handwheel 506, and the other end extends toward the rotating shaft 502; a hinge shaft 507 is also fixedly mounted on the screw 505, and the hinge shaft 507 is rotatably mounted on a fixed block 508, and a driving arm 509 fixedly connected to the rotating shaft 502 is fixed on the fixed block 508.

[0076] like Figures 10 to 13As shown in common, the stepped vertical top-feeding mechanism includes a second frame 6 and a plurality of V-shaped conveying rollers 605 rotatably mounted on the second frame 6. The second frame 6 is provided with a plurality of second frames 6 arranged in a straight line, and a spacing is provided between two adjacent second frames 6. A third linear drive element 601 is also vertically fixedly mounted on the second frame 6. The driving end of the third linear drive element 601 is provided with a mounting seat 602 which is slidably mounted on the second frame 6 through a guide slide 611. A top-feeding plate 603 is installed on the mounting seat 602. The top of the top-feeding plate 603 is provided with two inclined guide surfaces 604 with the same inclined direction. A blocking vertical surface 612 is formed between the high end of one of the two inclined guide surfaces 604 and the lower end of the other. The lower end of the inclined guide surface 604 extends to the side away from the first connecting guide mechanism, and the lower end of the inclined guide surface 604 close to the first connecting guide mechanism is arranged corresponding to the bottom of the V-shaped groove (not shown in the form of a number in the figure) on the conveying roller 605.

[0077] The first connecting guide mechanism and the second connecting guide mechanism cooperating with the stepped vertical pushing mechanism both include a bracket 7, the top of the bracket 7 is provided with an inclined guide rod 701, the lower end of the guide rod 701 is arranged close to the second frame 6, and the lower end of the bracket 7 is provided with a stop block 702 protruding in the height direction; the pushing plate 603 close to the side of the first connecting guide mechanism protrudes from the side of the second frame 6 and is provided with an extension block 614. In the width direction of the second frame 6, the lower end of the first connecting guide mechanism overlaps with the protruding end of the pushing plate 603.

[0078] The roller conveying mechanism includes a belt transmission mechanism that drives all conveying rollers 605 (including a pulley 613, a belt and a motor 606 on the conveying roller 605, and a pulley guard 610 is provided on the second body 6 on the pulley side). The conveying rollers 605 and the top feeding plate 603 are arranged in the longitudinal direction of the second body 6; a support plate 607 is installed on the second frame 602 on both sides of each conveying roller 605; a first detection switch 608 for detecting the pipe 9 is installed on the side of the second frame 6 and is protruding toward the bracket 7; a plurality of second detection switches 609 for detecting the pipe 9 are also installed on the second frame 6, and the second detection switch 609 is arranged on one side of the conveying roller 605 and is corresponding to the bottom of the V-groove on the conveying roller 605.

[0079] like Figure 5As shown, the sawing equipment includes a circular saw machine 4, which is provided with a positioning, clamping and removing mechanism and a guiding mechanism; the positioning, clamping and removing mechanism includes a positioning block 402 arranged on the circular saw machine 4 and corresponding to the saw blade 413, and a pressure block 404 driven by a first driving element 403 and provided with a clamping bevel (not shown in the form of a label in the figure) is slidably installed on the positioning block 402, and a saw blade groove 405 is provided on the pressure block 404 and the positioning block 402; a support frame 406 is provided on the circular saw machine 4 on one side of the positioning block 402, and a slide 407 sliding toward the positioning block 402 is provided on the support frame 406, and a pusher claw 409 driven by a second driving element 408 is slidably installed on the slide 407; the guiding mechanism includes a plurality of rollers 410 located upstream of the saw blade 413, and guide plates 411 are provided on both sides of the rollers 410, and the feed ends of the two guide plates 411 are provided with inclined guide bevels 412. In this solution, the first driving element 403 and the second driving element 408 are both air cylinders or oil cylinders.

[0080] In order to ensure the placement of the two ends of the pipe after cutting, a placement rack 8 is set on the downstream side of the first frame 1 or the second frame 6. The placement rack 8 is provided with a V-shaped constraint positioning plate 801. At the same time, a blanking alignment structure can also be set. Specifically, a cylinder 802 is set on the placement rack 8 at the starting end, and a top block 803 is set on the cylinder 802. A blocking plate 804 is set on the placement rack 8 at the end (see Figure 2 ).

[0081] The above-described embodiments are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Various modifications and alterations to the technical solutions of the present invention without departing from the spirit of the present invention shall fall within the scope of protection defined by the claims of the present invention.

Claims

1. A pipe end cutting process, characterized in that: The method includes the following steps to be implemented in sequence: S1. Pipe guiding: The first connecting and guiding mechanism is used to guide and block the pipe formed by the pipe production equipment; S2, transferring pipes one by one: transferring the pipes on the first connecting and guiding mechanism to the first conveying mechanism by the first pipe pushing mechanism; S3, conveying and sawing at one end: conveying a single pipe to the sawing device through the first conveying mechanism, and cutting the pipe head or tail through the sawing device; S4, returning to the original position: the pipe after the head or tail is cut is separated from the sawing device by the first conveying mechanism; S5, secondary transfer: The first pipe feeding mechanism transfers the pipe after the head or tail is cut to the second connecting guide mechanism downstream; S6, three-way transfer: the second pipe pushing mechanism transfers the single pipe on the second connecting guide mechanism to the second conveying mechanism; S7, four-time conveying and sawing at the other end: conveying the pipe after head or tail trimming to another sawing device through the second conveying mechanism, and performing tail trimming or head trimming on the pipe through the sawing device; S8, transfer out: the pipes after the head and tail are transferred out by the second pipe feeding mechanism; S9. During the process of S5 to S8, the next pipe to be cut is processed synchronously according to the process of S1 to S4; S10, perform continuous cutting operations according to the procedures from S1 to S9, The first pipe pushing mechanism and the second pipe pushing mechanism are both step-type vertical pushing mechanisms or swing-type pushing mechanisms; the first conveying mechanism and the second conveying mechanism are both clamping conveying mechanisms or roller conveying mechanisms; The swing-type top-feeding mechanism is used in conjunction with the clamp-feeding conveying mechanism, and the stepped vertical top-feeding mechanism is used in conjunction with the roller-feeding conveying mechanism. The swing-type top-feeding mechanism includes a first frame, on which a plurality of supporting rollers and a plurality of driving swing plates are rotatably mounted, and all of the driving swing plates are driven by a connecting rod-type synchronous driving mechanism, and each of the driving swing plates is provided with two connected wedge blocks, wherein the large end of one of the wedge blocks extends toward the first connecting guide mechanism, and a shift lever is provided on the driving swing plate at a position corresponding to the large end of the other wedge block, and the shift lever is arranged perpendicular to the driving swing plate and located upstream of the supporting roller; The top of the first frame is also provided with a plurality of supporting blocks located upstream of the supporting rollers, and the supporting blocks are provided with inclined surfaces, the lower ends of the inclined surfaces are arranged close to the supporting rollers and connected to the gear levers. The first connecting guide mechanism and the second connecting guide mechanism both include a guide frame, a guide rod at the top of the guide frame being inclined toward the first frame body, the lower end of the guide rod being arranged close to the supporting roller, and a pipe blocking adjustment mechanism being provided on the guide frame located at the lower end of the guide rod.

2. A pipe end cutting process according to claim 1, characterized in that: The connecting rod type synchronous drive mechanism includes a top rod fixed at one end to each of the driving swing plates, and the other ends of all the top rods are hinged to a synchronous connecting rod; and further includes a first linear drive element hinged to the first frame, and the driving end of the first linear drive element is hinged to the synchronous connecting rod; The clamping conveying mechanism includes a guide sleeve rotatably mounted on the top of the first frame, the guide sleeves are arranged in pairs and distributed on both sides of the supporting roller; it also includes a slide slidably mounted on the first frame and driven by a second linear drive element, the slide is provided with a motor, and the motor drives a driving wheel; an encoder is rotatably mounted on the first frame at a position corresponding to the driving wheel; a sensor is fixedly mounted on the feed port of the sawing equipment.

3. A pipe end cutting process according to claim 2, characterized in that: The pipe blocking and adjusting mechanism includes a rotating shaft located at the lower end of the guide rod and rotatably mounted on the length direction of the guide frame, with a plurality of baffles fixedly mounted on the rotating shaft; the rotating shaft is driven by an adjusting driving mechanism provided on the first frame; The adjustment drive mechanism includes a nut seat rotatably mounted on the first frame, a screw threaded on the nut seat, a handwheel at one end of the screw and the other end extending toward the rotating shaft; an articulated shaft is also fixedly mounted on the screw, the articulated shaft is rotatably mounted on a fixed block, and a drive arm fixedly connected to the rotating shaft is fixed on the fixed block.

4. The pipe end cutting process according to claim 1, characterized in that: The stepped vertical pushing mechanism includes a second frame and a plurality of V-shaped conveying rollers rotatably mounted on the second frame. A third linear drive element is also vertically fixedly mounted on the second frame. The driving end of the third linear drive element is installed with a mounting seat that is guided and slidably mounted on the second frame. A pushing plate is installed on the mounting seat. The top of the pushing plate is provided with two inclined guide surfaces with the same inclination direction. The lower end of the inclined guide surface extends to the side away from the first connecting guide mechanism, and the lower end of the inclined guide surface close to the first connecting guide mechanism is arranged corresponding to the bottom of the V-shaped groove on the conveying roller.

5. A pipe end cutting process according to claim 4, characterized in that: The first connecting guide mechanism and the second connecting guide mechanism each include a bracket, a top of the bracket is provided with an inclined guide rod, a lower end of the guide rod is provided close to the second frame, and a lower end of the bracket is provided with a stopper protruding in the height direction; The push plate close to the first connecting guide mechanism protrudes from the side of the second frame, and in the width direction of the second frame, the lower end of the first connecting guide mechanism overlaps with the protruding end of the push plate.

6. A pipe end cutting process according to claim 5, characterized in that: The roller conveying mechanism includes a belt transmission mechanism that drives all the conveying rollers, and the conveying rollers and the top conveying plate are arranged in the longitudinal direction of the second frame; and a support plate is installed on the second frame on both sides of each conveying roller; A first detection switch protruding toward the bracket is installed on the side of the second frame; multiple second detection switches are also installed on the second frame, and the second detection switches are arranged on one side of the conveying roller and corresponding to the bottom of the V-groove on the conveying roller.

7. A pipe end cutting process according to any one of claims 1 to 6, characterized in that: The sawing equipment includes a circular saw machine, which is provided with a positioning, clamping and removing mechanism and a guide mechanism; The positioning, clamping and removing mechanism includes a positioning block provided on the circular saw machine and corresponding to the saw blade, a pressure block driven by a first driving element and provided with a pressing inclined surface being slidably mounted on the positioning block, and a saw blade groove being provided on both the pressure block and the positioning block; a support frame is provided on the circular saw machine located on one side of the positioning block, the support frame is provided with a slide which slides toward the positioning block, and a removing claw driven by a second driving element being slidably mounted on the slide; The guide mechanism includes a plurality of rollers located upstream of the saw blade, guide plates are provided on both sides of the rollers, and the feed ends of the two guide plates are provided with inclined guiding bevels.

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