Pipe rotary sawing machine

Abstract

The present invention discloses a pipe rotary sawing machine, comprising an automatic loading rack, an automatic feeding device and a sawing device, wherein the sawing device comprises a machine base, a rotary clamp assembly is mounted on the machine base, the automatic feeding device is used to longitudinally feed the pipe into the rotary clamp assembly, a sawing head driven by a feeding power device is slidably mounted or swingably mounted on the machine base, and a receiving device for receiving the sawed material is also arranged on the machine base, and the receiving device cooperates with the rotary clamp assembly. The sawing machine uses the rotary clamp assembly to clamp the pipe and rotate it around its own center, and then uses the sliding or swinging sawing head to saw the pipe, so that the saw blade of the sawing head only needs to cut the depth of the pipe wall thickness to completely cut the pipe, thereby reducing the loss of the saw blade.

Description

Technical Field

[0001] The invention relates to a pipe rotary sawing machine, which is used for rotary sawing pipes. Background Art

[0002] At present, the main method used in pipe sawing machines is that the saw blade rotates and the pipe is clamped and fixed, and then the rotating saw blade is gradually fed to cut the pipe. Therefore, the current pipe sawing machine mainly includes a loading rack for placing the pipe and loading the pipe to the clamping mechanism, a sliding or swinging sawing head driven by a feeding power device, and the pipe is fed into the clamp assembly by the clamping mechanism. The clamp assembly generally includes an upstream clamp and a downstream clamp, and the upstream clamp and the downstream clamp cooperate with each other to clamp the pipe. The sawing head approaches the pipe to achieve sawing by sliding or swinging. The saw blade sawing position is located between the upstream clamp and the downstream clamp. The entire sawing process requires the saw blade to saw the depth of the pipe diameter, so the sawing time is long and the saw blade is severely worn. In addition, the current pipe bureau sawing machine adopts a clamping mechanism for feeding, and the clamping mechanism mainly adopts a feeding clamp. The part where the feeding clamp clamps the pipe cannot be sawed, so a long section of tail material remains, resulting in the waste of pipe material. The current loading rack is welded from profiles, and is provided with an inclined unloading platform. A blocking block is provided on the lower side of the loading rack, and a support roller group is provided on one side of the blocking block. The pipe is cached on the unloading platform, and then the pipe is lifted by the lifting block, so that the height of the pipe is higher than the height of the blocking block, and then the pipe falls along the top of the lifting block to the blocking block and then falls to the support roller group. The loading rack of this structure has the following disadvantages: 1. In the current loading method, the pipe will fall from the lifting block to the blocking block, and then fall to the support roller group, which will cause two collisions, which will damage the surface of the pipe and make a lot of noise; 2. Since the current loading rack is welded from profiles, one support frame can only support one specification group of pipes. When the length difference of the pipes is large, loading racks of different lengths are required for support; in addition, when the pipes are long, the length of the loading rack is also very long, resulting in increased transportation costs. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a rotary sawing machine for pipes, which uses a rotary clamp assembly to clamp the pipe and rotate it around its own center, and then uses a sliding or swinging sawing head to saw the pipe, so that the saw blade of the sawing head only needs to cut the depth of the pipe wall thickness to completely cut the pipe, thereby reducing the loss of the saw blade.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: a pipe rotary sawing machine, including an automatic loading rack for placing pipes, an automatic feeding device arranged downstream of the automatic loading rack for axially feeding the pipes, and a sawing device arranged downstream of the automatic feeding device, the sawing device including a machine base, a rotating clamp assembly for clamping the pipes and rotating around their own center is installed on the machine base, the automatic feeding device is located upstream of the rotating clamp assembly and is used to longitudinally feed the pipes into the rotating clamp assembly, a sawing head driven by a feeding power device is laterally slidably or swingably installed on one side of the rotating clamp assembly on the machine base, and a material receiving device for receiving the sawed material is also provided on the machine base, and the material receiving device cooperates with the rotating clamp assembly.

[0005] As a preferred solution, the automatic feeding device includes a feeding frame located on one side of the machine base, a longitudinal slide driven by a longitudinal power device is longitudinally slidably installed on the feeding frame, a feeding clamp assembly driven by a clamping power device is transversely slidably installed on the longitudinal slide, a column is also provided on the longitudinal slide, a lifting seat driven by a lifting power device is installed on the column, a longitudinal push rod inserted into the pipe hole is fixed on the lifting seat, a driving channel is provided inside the longitudinal push rod, a plurality of tightening blocks are radially slidably installed on the free end of the longitudinal push rod, and the driving channel on the longitudinal push rod is connected to the The driving air circuit is connected to drive the radial expansion and contraction of the tightening block. The automatic feeding device initially uses the feeding clamp assembly to clamp the pipe for longitudinal feeding. After multiple sections of sawing, the length of the pipe becomes shorter and shorter. When the length cannot meet the clamping requirements of the feeding clamp assembly, a longitudinal push rod is inserted into the inner hole of the pipe, and the pipe is tightened by the tightening block, so that longitudinal feeding can be performed again. At the same time, the force of the tightening block to tighten the pipe can be changed by changing the air pressure of the driving air circuit. In this way, when the pipe is rotated and sawed, the tightening block can support the rotation of the pipe, thereby ensuring the accuracy of the rotation of the pipe. In this way, the length of the tail material can be reduced through the automatic feeding device.

[0006] As a preferred solution, an auxiliary support structure for supporting the pipe is also provided on the longitudinal slide upstream of the clamp assembly, the auxiliary support structure includes a mounting support and an auxiliary roller frame mounted on the mounting support for lifting and lowering, an auxiliary support roller is rotatably mounted on the auxiliary roller frame, and a first height adjustment mechanism for adjusting the height of the auxiliary roller frame is installed on the mounting support. The height of the auxiliary support roller can be better adjusted by utilizing the height adjustment structure, so that pipes of different sizes can be supported.

[0007] As a preferred solution, the mounting support includes two guide columns fixed on the longitudinal slide, the upper ends of the guide columns are provided with mounting plates, the two ends of the auxiliary roller frame are slidably mounted on the guide columns, and the first height adjustment mechanism includes an adjusting screw rotatably mounted on the mounting plate, and the threaded section of the adjusting screw is threadedly connected to the auxiliary roller frame.

[0008] As a preferred solution, the longitudinal push rod includes a push rod body fixed on a lifting seat, the drive channel is arranged inside the push rod body, a connecting hole is arranged on the push rod body for convenient connection with the drive air circuit, a connecting head is threadedly connected to the end of the push rod body, a drive chamber connected to the drive channel is arranged in the connecting head, at least two radial mounting holes connected to the drive chamber are evenly distributed on the connecting head, the clamping block is radially slidably installed in the radial mounting hole, the clamping block and the radial mounting hole are sealed and matched, the longitudinal push rod has a simple structure, and the connecting head can be detachably installed at the end of the push rod body, which is convenient for replacing different specifications, and the split structure is also very convenient to manufacture.

[0009] As a preferred solution, the material receiving device includes a finished product receiving device and a tail material receiving device. A material drop-out port is provided on the machine base at the downstream side of the rotating clamp assembly, and the tail material receiving device is provided below the material drop-out port for receiving the output tail material; the finished product receiving device includes a material receiving chute slidably mounted on the machine base, and the material receiving chute is driven by a material receiving power device to slide between a material receiving station and an avoidance station, and a plurality of material receiving guide rods are arranged on the material receiving chute, and gaps are formed between the material receiving guide rods for facilitating the falling of metal chips. The material receiving device can not only normally receive the sawed pipe sections, but also avoid the tail material to facilitate the falling of the tail material from the material drop-out port. At the same time, a plurality of material receiving guide rods are provided in the material receiving chute, and the gaps between the material receiving guide rods can facilitate the falling of metal chips.

[0010] As a preferred solution, the automatic loading rack includes a rack, an inclined material discharging platform is arranged above the rack, a blocking material guide plate is arranged on the lower end side of the material discharging platform on the rack, the upper end surface of the blocking material guide plate is arranged as an inclined material guide slope, an upstream material guide slope is arranged on the upstream side of the blocking material guide plate close to the material discharging platform, a supporting roller group is installed on the downstream side of the blocking material guide plate on the rack, and a turning mechanism is installed on the rack, and the turning mechanism turns the pipes on the material discharging platform one by one along the upstream material guide slope to the blocking material guide plate The pipes are arranged on the discharging platform and blocked by the blocking guide plate, and then the turning mechanism is started to turn the lowest pipe onto the blocking guide plate. During the turning process, the pipes enter the inclined material guide slope along the upstream material guide slope. The whole process is collision-free, thereby reducing noise and avoiding collision of pipes. Then the pipes roll down the upstream material guide slope onto the supporting roller group, which is convenient for the feeding mechanism of the sawing machine to feed the materials. The automatic feeding rack has reliable operation, reduced collision, low noise and better surface quality of the pipes.

[0011] As a preferred scheme, the material turning mechanism includes a deflection shaft rotatably mounted on the material rack and extending longitudinally, a plurality of material turning blocks are fixedly mounted on the deflection shaft, the material turning block includes a turning surface for turning the lowest end pipe and a pushing surface for pushing other pipes during the turning process, and a deflection power device for reciprocating deflection of the deflection shaft is installed on the material rack, the deflection power device can reciprocate to drive the deflection shaft to deflect, and the deflection of the deflection shaft will drive multiple material turning blocks to reciprocate, so that while the turning surface turns the pipe, the pushing surface will push other pipes to ensure the reliability of the turning action, and when resetting, the turning surface will be below the pipe, so that the pipes on the discharge platform will be replenished due to gravity, and this process is stable and reliable, and can ensure that the pipe is turned along the contour of the upstream guide slope when turning the material, avoiding the falling and collision of the pipe.

[0012] As a preferred solution, the material rack includes two or more material rack bodies, which are detachably fixed by connecting beams. In this way, the material rack can flexibly select a suitable number of material rack bodies according to the actual length of the pipe, which also reduces transportation costs.

[0013] As a preferred solution, the discharging platform includes a plurality of discharging racks arranged at intervals, each discharging rack includes a connecting rod and an inclined support rod, the lower end of the support rod is hinged to the rack, the high end of the support rod is hinged to the connecting rod, and the connecting rod is provided with a plurality of mounting gear holes, one of the mounting gear holes is provided with a fixing bolt for fixing the connecting rod to the rack, so that the inclination angle of the support rod can be changed by changing the position of the fixing bolt on the mounting gear hole to meet the arrangement of pipes of different sizes.

[0014] After adopting the above technical scheme, the effect of the present invention is as follows: the pipe rotary sawing machine includes an automatic loading rack for placing pipes, an automatic feeding device arranged downstream of the automatic loading rack for axially feeding the pipes, and a sawing device arranged downstream of the automatic feeding device, wherein the sawing device includes a machine base, a rotating clamp assembly for clamping the pipes and rotating around their own center is installed on the machine base, the automatic feeding device is located upstream of the rotating clamp assembly and is used to longitudinally feed the pipes into the rotating clamp assembly, and a feeding drive is installed on one side of the rotating clamp assembly on the machine base for horizontal sliding or swinging. The sawing head is driven by a power device, and the machine base is also provided with a receiving device for receiving the sawed material, and the receiving device cooperates with the rotating clamp assembly. Therefore, the pipe is placed on the automatic feeding rack and the automatic feeding rack loads the material, and then the automatic feeding device feeds the pipe into the rotating clamp assembly to clamp the pipe and rotate it around its own center. Then the sawing head is driven by the feeding power device to slide or swing, and the saw blade of the sawing head will gradually saw the pipe. At this time, the pipe continues to rotate. When the sawing depth exceeds the wall thickness of the pipe, the pipe will be sawed off, so that the wear of the saw blade is reduced and the sawing speed is also faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 is a three-dimensional structural diagram of an embodiment of the present invention;

[0017] Figure 2 It is a three-dimensional view of the automatic feeding device, the rotating clamp assembly, the sawing head and the material receiving device;

[0018] Figure 3 It is a partial stereogram of the automatic feeding device;

[0019] Figure 4 is a perspective view of a sawing device;

[0020] Figure 5 It is a three-dimensional picture of the automatic loading rack;

[0021] Figure 6 It is a side view of the automatic loading rack;

[0022] Figure 7 yes Figure 5 An enlarged schematic diagram at A;

[0023] In the attached drawings: 1. Automatic loading rack; 101. Rack body; 102. Connecting beam; 103. Synchronous connecting rod; 104. Discharging platform; 1041. Support rod; 1042. Connecting rod; 1043. Installing gear hole; 105. Blocking guide plate; 1051. Upstream guide slope; 1052. Inclined guide slope; 106. Support roller group; 1061. Support roller; 1062. Support roller frame; 107. Height adjustment mechanism; 108. Turning mechanism; 1081. Deflection shaft; 1082. Turning block; 10821. Turning surface; 10822. Pushing surface; 1083. Turning cylinder; 2. Automatic feeding device; 201. Feeding rack; 202. Longitudinal slide; 203. Auxiliary support Structure; 2031, auxiliary roller frame; 2032, guide column; 2033, mounting plate; 2034, adjusting screw; 2035, auxiliary support roller; 204, feeding clamp assembly; 205, column; 206, lifting seat; 207, lifting power device; 208, longitudinal push rod; 2081, push rod body; 2082, connecting head; 2083, tightening block; 3, rotating clamp assembly; 301, rotating spindle; 302, clamp driving motor; 303, three-jaw chuck; 4, finished product receiving device; 401, receiving chute; 402, receiving guide rod; 403, receiving slide seat; 404, receiving power device; 5, sawing head; 6, tail material receiving device; 7, machine base; 701, drop opening; DETAILED DESCRIPTION

[0024] The present invention is further described in detail below through specific examples.

[0025] The longitudinal direction and axial direction mentioned in this embodiment are both along the length direction of the tube, and the transverse direction is a direction perpendicular to the longitudinal direction.

[0026] like Figures 1 to 7As shown, a pipe rotary sawing machine includes an automatic loading rack 1 for placing pipes, the automatic loading rack 1 includes a rack, an inclined material discharging platform 104 is arranged above the rack, a blocking material guide plate 105 is arranged on the lower end side of the material discharging platform 104 on the rack, the upper end surface of the blocking material guide plate 105 is arranged as an inclined material guide slope 1052, an upstream material guide slope 1051 is arranged on the upstream side of the blocking material guide plate 105 close to the material discharging platform 104, a support roller group 106 is installed on the downstream side of the blocking material guide plate 105 on the rack, and the upper end surface of the blocking material guide plate 105 is arranged as an inclined material guide slope 1052, and an upstream material guide slope 1051 is arranged on the upstream side of the blocking material guide plate 105 close to the material discharging platform 104. A material turning mechanism 108 is installed, which turns the pipes on the discharge platform 104 one by one along the upstream material guide slope 1051 to the inclined material guide slope 1052 of the blocking material guide plate 105. The pipes are arranged on the discharge platform 104 and blocked by the blocking material guide plate 105. Then the material turning mechanism 108 is started to turn the lowest pipe onto the blocking material guide plate 105. During the turning process, the pipes enter the inclined material guide slope 1052 along the upstream material guide slope 1051. There is no collision in the whole process, thereby reducing noise and avoiding collision of pipes.

[0027] like Figures 5 to 7 As shown, the material turning mechanism 108 includes a deflection shaft 1081 which is rotatably mounted on the material rack and extends longitudinally, and a plurality of material turning blocks 1082 are fixedly mounted on the deflection shaft 1081. The material turning blocks 1082 include a material turning surface 10821 for turning over the lowest end pipe and a pushing surface 10822 for pushing other pipes during the material turning process. A deflection power device for reciprocating deflection of the deflection shaft 1081 is mounted on the material rack, and the deflection power device can reciprocate and drive the deflection shaft 1081 to deflect, and the deflection The deflection of the rotating shaft 1081 will drive the multiple turning blocks 1082 to deflect back and forth, so that when the turning surface 10821 turns the pipe, the pushing surface 10822 will push other pipes to ensure the reliability of the turning action, and when resetting, the turning surface 10821 will be below the pipe, so that the pipe on the discharge platform 104 will be replenished due to gravity. This process is stable and reliable, and when turning the material, it can ensure that the pipe is turned along the contour of the upstream guide slope 1051, avoiding the falling and collision of the pipe.

[0028] In this embodiment, the deflection power device is a material turning cylinder 1083, one end of which is hinged on the material rack, and an articulated arm is fixed on the deflection shaft 1081, and the other end of the material turning cylinder 1083 is hinged on the articulated arm. The material turning block 1082 is a fan-shaped material turning block 1082.

[0029] The material rack includes two or more material rack bodies 101, and the material rack bodies 101 are detachably fixed by connecting beams 102. In this way, the material rack can flexibly select a suitable number of material rack bodies 101 according to the actual length of the pipe, and the transportation cost is also reduced. The material rack bodies 101 and the material rack bodies 101 are connected by connecting beams 102, and at the same time, each deflection shaft 1081 section can be connected by a coupling, so that two turning cylinders 1083 can always drive all the turning blocks 1082 to turn the material.

[0030] As shown in Figure 6, the discharging platform 104 includes a plurality of discharging racks arranged at intervals, each of which includes a connecting rod 1042 and an inclined support rod 1041, the lower end of the support rod 1041 is hinged on the rack, and the high end of the support rod 1041 is hinged to the connecting rod 1042, and the connecting rod 1042 is provided with a plurality of mounting gear holes 1043, one of which is provided with a fixing bolt for fixing the connecting rod 1042 to the rack, so that the inclination angle of the support rod 1041 can be changed by changing the position of the fixing bolt on the mounting gear hole 1043 to meet the arrangement of pipes of different sizes. A set of the support roller group 106 is installed on each material rack body 101, and the support roller group 106 includes a support roller frame 1062 which is lifted and installed on the material rack body 101, and a group of support rollers 1061 is rotatably installed on the support roller frame 1062. A second height adjustment mechanism 107 for adjusting the height of the support roller frame 1062 is provided between the material rack body 101 and the support roller frame 1062. The second height adjustment structure adopts the currently conventional screw elevator, and the height of the support roller frame 1062 is adjusted according to the principle of the screw nut mechanism of the screw elevator, so that the supported pipe can be concentric with the clamping center of the rotating clamp assembly 3.

[0031] An automatic feeding device 2 for axially feeding the pipe is arranged downstream of the automatic feeding rack 1, such as Figure 1 , Figure 2 and Figure 3 As shown, the automatic feeding device 2 includes a feeding frame 201 located on one side of the machine base 7, a longitudinal slide 202 driven by a longitudinal power device is longitudinally slidably installed on the feeding frame 201, and a feeding clamp assembly 204 driven by a clamping power device is transversely slidably installed on the longitudinal slide 202, wherein the longitudinal power device adopts a servo motor, and the sliding of the longitudinal slide 202 is realized by a screw-nut mechanism, and the clamping power device adopts a cylinder, and the feeding clamp assembly 204 is driven by the cylinder. The feeding clamp assembly 204 is two V-shaped feeding clamps that slide transversely, and the feeding clamp is driven by the cylinder to clamp or release the pipe.

[0032] The longitudinal slide 202 is also provided with a column 205, on which a lifting seat 206 driven by a lifting power device 207 is installed. The lifting power device 207 is driven by a cylinder. A longitudinal push rod 208 inserted into the hole of the pipe is fixed on the lifting seat 206. A driving channel is provided inside the longitudinal push rod 208. A plurality of tightening blocks 2083 are radially slidably installed on the free end of the longitudinal push rod 208. The driving channel on the longitudinal push rod 208 is connected to the driving air path to drive the radial expansion and contraction of the tightening block 2083. When the automatic feeding device 2 starts The feeding clamp assembly 204 is used to clamp the pipe for longitudinal feeding. After multiple sections of sawing, the length of the pipe becomes shorter and shorter. When the length cannot meet the clamping requirements of the feeding clamp assembly 204, the longitudinal push rod 208 is inserted into the inner hole of the pipe, and the pipe is tightened by the tightening block 2083, so that longitudinal feeding can be performed again. At the same time, the force of the tightening block 2083 to tighten the pipe can be changed by changing the air pressure of the driving air circuit. In this way, when the pipe is rotated and sawed, the tightening block 2083 can support the rotation of the pipe, thereby ensuring the accuracy of the rotation of the pipe. In this way, the length of the tail material can be reduced by the automatic feeding device 2.

[0033] In this embodiment, an auxiliary support structure 203 for supporting the pipe is also provided on the longitudinal slide 202 upstream of the clamp assembly. The auxiliary support structure 203 includes a mounting support and an auxiliary roller frame 2031 mounted on the mounting support for lifting. An auxiliary support roller 2035 is rotatably mounted on the auxiliary roller frame 2031. A first height adjustment mechanism 107 for adjusting the height of the auxiliary roller frame 2031 is installed on the mounting support. The height of the auxiliary support roller 2035 can be better adjusted by utilizing the height adjustment structure, so that pipes of different sizes can be supported.

[0034] like Figure 3As shown, the mounting support includes two guide columns 2032 fixed on the longitudinal slide 202, and the upper ends of the guide columns 2032 are provided with mounting plates 2033. The two ends of the auxiliary roller frame 2031 are slidably mounted on the guide columns 2032. The first height adjustment mechanism 107 includes an adjusting screw 2034 rotatably mounted on the mounting plate 2033, and the threaded section of the adjusting screw 2034 is threadedly connected to the auxiliary roller frame 2031. The longitudinal push rod 208 includes a push rod body 2081 fixed on the lifting seat 206, the drive channel is arranged inside the push rod body 2081, and a connecting hole is arranged on the push rod body 2081 for convenient connection with the drive air circuit. The end of the push rod body 2081 is threadedly connected with a connecting head 2082, and a drive chamber connected to the drive channel is arranged in the connecting head 2082. At least two radial mounting holes connected to the drive chamber are evenly distributed on the connecting head 2082, and the tightening block 2083 is radially slidably installed in the radial mounting hole. The tightening block 2083 is sealed with the radial mounting hole. The longitudinal push rod 208 has a simple structure, and the connecting head 2082 can be detachably installed at the end of the push rod body 2081, which is convenient for replacing different specifications, and the split structure is also very convenient to manufacture.

[0035] The sawing device is arranged downstream of the automatic feeding device 2, and the sawing device includes a machine base 7, on which is mounted a rotating clamp assembly 3 for clamping the pipe and rotating around its own center. The automatic feeding device 2 is located upstream of the rotating clamp assembly 3 and is used to longitudinally feed the pipe into the rotating clamp assembly 3. A sawing head 5 driven by a feeding power device is laterally slidably or swingably mounted on one side of the rotating clamp assembly 3 on the machine base 7. The machine base 7 is also provided with a material receiving device for receiving the sawed material, and the material receiving device cooperates with the rotating clamp assembly 3.

[0036] The rotating clamp assembly 3 in this embodiment includes a clamp support, on which a hollow rotating spindle 301 is rotatably mounted, and a three-jaw chuck 303 is mounted on the rotating spindle 301. A clamp driving motor 302 for driving the rotating spindle 301 to rotate is mounted on the machine base 7 or the clamp support. In this way, the automatic feeding device 2 can be used to allow the pipe to enter from the hollow rotating spindle 301 and be fixed by the three-jaw chuck 303. The three-jaw chuck 303 radially clamps the pipe. The drive of the three-jaw chuck 303 can adopt the current conventional hydraulic drive method. The three-jaw chuck 303 is loosened during the feeding process, and clamps the pipe during the sawing process.

[0037] like Figure 4As shown, the material receiving device includes a finished product receiving device 4 and a tail material receiving device 6. A material drop opening 701 is provided on the machine base 7 at the downstream side of the rotating clamp assembly 3. The tail material receiving device 6 is provided below the material drop opening 701 for receiving the output tail material. The finished product receiving device 4 includes a material receiving chute 401 slidably mounted on the machine base 7. The material receiving chute 401 is mounted on the machine base 7 through a material receiving slide 403. The material receiving chute 401 is driven by a material receiving power device 404 to slide between the material receiving station and the avoidance station. The material receiving power device 404 also adopts a cylinder Drive, the cylinder is fixed on the machine base 7 and the piston rod is connected to the material receiving slide 403 to drive the material receiving chute 401 to slide. The material receiving chute 401 is an inclined chute, and a plurality of material receiving guide rods 402 are arranged on the material receiving chute 401. The material receiving guide rods 402 form a gap between the material receiving guide rods 402 to facilitate the falling of metal chips. The material receiving device can not only normally receive the sawed pipe section, but also avoid the tailings, so that the tailings can fall from the drop port 701. At the same time, there are a plurality of material receiving guide rods 402 in the material receiving chute 401, and the gaps between the material receiving guide rods 402 can facilitate the falling of metal chips. The feeding and receiving device includes a material collecting bucket arranged downstream of the drop port 701, and a tailing conveyor belt is arranged at the lower mouth of the collecting bucket. The sawed feeding material and metal iron chips fall into the drop port 701 and are sent out by the tailing conveyor belt.

[0038] 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 should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A pipe rotary sawing machine, comprising an automatic loading rack for placing pipes, an automatic feeding device arranged downstream of the automatic loading rack for axially feeding the pipes, and a sawing device arranged downstream of the automatic feeding device, characterized in that: The sawing device comprises a machine base, on which a rotating clamp assembly for clamping the pipe and rotating around its own center is installed, the automatic feeding device is located upstream of the rotating clamp assembly and is used to longitudinally feed the pipe into the rotating clamp assembly, a sawing head driven by a feeding power device is installed transversely and slidably or swingably on one side of the rotating clamp assembly on the machine base, and a receiving device for receiving the sawed material is also provided on the machine base, and the receiving device cooperates with the rotating clamp assembly. The automatic feeding device comprises a feeding frame located at one side of the machine base, a longitudinal slide driven by a longitudinal power device is longitudinally slidably mounted on the feeding frame, a feeding clamp assembly driven by a clamping power device is transversely slidably mounted on the longitudinal slide, a column is further arranged on the longitudinal slide, a lifting seat driven by a lifting power device is mounted on the column, a longitudinal push rod inserted into the pipe hole is fixed on the lifting seat, a driving channel is arranged inside the longitudinal push rod, a plurality of tightening blocks are radially slidably mounted on the free end of the longitudinal push rod, the driving channel on the longitudinal push rod is connected with the driving air path for driving the radial extension and contraction of the tightening block, The longitudinal push rod comprises a push rod body fixed on the lifting seat, the driving channel is arranged inside the push rod body, a connecting hole convenient for connecting with the driving gas path is arranged on the push rod body, a connecting head is threadedly connected to the end of the push rod body, a driving chamber connected with the driving channel is arranged in the connecting head, at least two radial mounting holes connected with the driving chamber are evenly distributed on the connecting head, the tightening block is radially slidably installed in the radial mounting hole, and the tightening block and the radial mounting hole are sealed and matched. The longitudinal power device adopts a servo motor, and the sliding of the longitudinal slide is realized through a screw nut mechanism.

2. A pipe rotary sawing machine according to claim 1, characterized in that: An auxiliary support structure for supporting the pipe is also arranged on the longitudinal slide upstream of the feeding clamp assembly, the auxiliary support structure includes a mounting support and an auxiliary roller frame mounted on the mounting support for lifting and lowering, an auxiliary support roller is rotatably mounted on the auxiliary roller frame, and a first height adjustment mechanism for adjusting the height of the auxiliary roller frame is installed on the mounting support.

3. A pipe rotary sawing machine according to claim 2, characterized in that: The mounting support includes two guide columns fixed on the longitudinal slide, and the upper ends of the guide columns are provided with mounting plates. The two ends of the auxiliary roller frame are slidably mounted on the guide columns. The first height adjustment mechanism includes an adjusting screw rotatably mounted on the mounting plate, and the threaded section of the adjusting screw is threadedly connected to the auxiliary roller frame.

4. A pipe rotary sawing machine according to claim 1, characterized in that: The material receiving device includes a finished product receiving device and a tail material receiving device. A material drop-out port is provided on the machine base at the downstream side of the rotating clamp assembly. The tail material receiving device is provided below the material drop-out port for receiving the output tail material. The finished product receiving device includes a material receiving chute slidably mounted on the machine base. The material receiving chute is driven by a material receiving power device to slide between a material receiving station and an avoidance station. A plurality of material receiving guide rods are arranged on the material receiving chute, and gaps are formed between the material receiving guide rods to facilitate the falling of metal chips.

5. A pipe rotary sawing machine according to any one of claims 1 to 4, characterized in that: The automatic loading rack includes a rack, an inclined material discharging platform is arranged above the rack, a blocking material guide plate is arranged on the lower end side of the material discharging platform on the rack, the upper end surface of the blocking material guide plate is arranged as an inclined material guide slope, an upstream material guide slope is arranged on the upstream side of the blocking material guide plate close to the material discharging platform, a supporting roller group is installed on the rack at the downstream side of the blocking material guide plate, and a turning mechanism is installed on the rack, and the turning mechanism turns the pipes on the material discharging platform one by one along the upstream material guide slope to the inclined material guide slope of the blocking material guide plate.

6. A pipe rotary sawing machine according to claim 5, characterized in that: The material turning mechanism includes a deflection shaft which is rotatably mounted on the material rack and extends longitudinally, and a plurality of material turning blocks are fixedly mounted on the deflection shaft. The material turning blocks include a turning surface for turning over the lowest end pipe and a pushing surface for pushing other pipes during the turning process. A deflection power device for reciprocating deflection of the deflection shaft is mounted on the material rack.

7. A pipe rotary sawing machine according to claim 6, characterized in that: The material rack comprises two or more material rack bodies, and the material rack bodies are detachably fixed via connecting beams.

8. A pipe rotary sawing machine according to claim 7, characterized in that: The discharging platform includes a plurality of discharging racks arranged at intervals, each of which includes a connecting rod and an inclined support rod, the lower end of the support rod is hinged to the rack, the high end of the support rod is hinged to the connecting rod, and the connecting rod is provided with a plurality of mounting gear holes, one of which is provided with a fixing bolt for fixing the connecting rod to the rack.

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