Fixed-length cutting and chamfering machine for PPR pipe and integrated machining method of fixed-length cutting and chamfering machine

Abstract

The invention relates to the technical field of pipe machining, and discloses a PPR pipe fixed-length cutting and chamfering machine and an integrated machining method.The cutting and chamfering machine comprises a rack, a chamfering mechanism, a discharging mechanism and a clamping mechanism are sequentially arranged on the top face of the rack from left to right, a cutting mechanism is arranged above the clamping mechanism, and a feeding mechanism is arranged on the right side of the clamping mechanism; a material carrying frame is arranged on the right side of the feeding mechanism, and a PPR pipe to be machined is arranged above the material carrying frame. Through the design of the chamfering mechanism and the cutting mechanism, integrated operation of fixed-length cutting and chamfering of the PPR pipe is achieved, the machining process is simplified, and the production efficiency is improved; through the design of the clamping mechanism and the feeding mechanism, accurate positioning and stable conveying of PPR pipes are achieved, errors caused by manual operation are effectively reduced, the cutting and chamfering precision is improved, and therefore the product quality is improved; and by optimizing the structural design of the equipment, the complexity of the equipment is reduced, the maintenance cost of the equipment is reduced, and the stability and reliability of the equipment are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe processing, and more particularly to a PPR pipe fixed-length cutting and chamfering machine and an integrated processing method thereof. Background Art

[0002] PPR pipe, also known as random copolymer polypropylene pipe, is a new type of plastic pipe. It has occupied a place in the plastic pipe market because of its advantages of energy saving and material saving, environmental protection, light weight and high strength, corrosion resistance, smooth inner wall without scaling, simple construction and maintenance, and long service life. It is a recognized green and environmentally friendly product. When PPR pipe is used as a pipe sleeve to dock other workpieces, it needs to be cut into a specified length and chamfered at the docking end. In the existing technology, the fixed-length cutting and chamfering of PPR pipes are usually carried out in sections on two devices: first, the PPR pipe is cut into a specified length by a cutting device, and then the cut pipe is transferred to the chamfering device for chamfering. Although this method can realize the fixed-length cutting and chamfering of PPR pipes, the fixed-length cutting and chamfering process of PPR pipes is cumbersome and needs to be carried out in sections on two devices respectively, and the cutting length needs to be manually controlled, which not only increases the complexity of the operation and reduces the production efficiency, but also due to the error of manual operation, it may affect the accuracy of cutting and chamfering, and thus affect the quality of the product. In addition, the existing equipment has a complex structure and high maintenance cost, which also increases the production cost to a certain extent. Summary of the invention

[0003] In view of this, the present invention provides a PPR pipe fixed-length cutting and chamfering machine and an integrated processing method thereof, which can realize the integrated operation of fixed-length cutting and chamfering of PPR pipes, simplify the processing flow and improve production efficiency.

[0004] To achieve the above-mentioned purpose, the PPR pipe fixed-length cutting and chamfering machine provided by the present invention includes a frame, a chamfering mechanism is provided at the left end of the top surface of the frame, a unloading mechanism is provided on the right side of the chamfering mechanism, a clamping mechanism is provided on the right side of the unloading mechanism, a cutting mechanism is provided above the clamping mechanism, a feeding mechanism is provided on the right side of the clamping mechanism, a material loading rack is provided on the right side of the feeding mechanism, and the PPR pipe to be processed is provided above the material loading rack.

[0005] Preferably, the chamfering mechanism includes a chamfering push cylinder and a motor seat plate, the chamfering push cylinder is fixedly connected to the frame through the push cylinder seat plate, the left end of the motor seat plate is connected to the telescopic rod of the chamfering push cylinder, the bottom surface of the motor seat plate is slidably connected to the first linear guide rail fixed on the top surface of the frame, the motor seat plate is provided with a gear motor, and the gear motor is equipped with a chamfering knife.

[0006] Preferably, two locking nuts are provided at the end of the telescopic rod of the chamfering pushing cylinder, and the pushing stroke of the chamfering pushing cylinder can be adjusted by adjusting the locking nuts.

[0007] Preferably, the chamfering mechanism further comprises a chamfering damper fixed below the chamfering cutter, and the feed speed of the chamfering process is controlled by adjusting the resistance of the chamfering damper.

[0008] Preferably, the unloading mechanism includes a unloading chute and a pushing cylinder installed on the rear side of the unloading chute, and the telescopic rod of the pushing cylinder faces the unloading chute.

[0009] Preferably, the clamping mechanism comprises a first clamping cylinder, a first clamping block, a second clamping cylinder and a second clamping block, the first clamping block is mounted on the telescopic rod of the first clamping cylinder, and the second clamping block is mounted on the telescopic rod of the second clamping cylinder.

[0010] Preferably, the cutting mechanism comprises a cutting saw and a lifting cylinder, the telescopic rod of the lifting cylinder is connected to the cutting saw, and the cylinder barrel is connected to the frame through a supporting structure.

[0011] Preferably, the feeding mechanism includes a feeding damper and a second linear guide rail arranged on the right side of the feeding damper, a feeding seat plate is slidably connected above the second linear guide rail, a third clamping cylinder is provided on the feeding seat plate, a third clamping block is installed on the telescopic rod of the third clamping cylinder, and the feeding seat plate is telescopically connected to the left end of the material riding frame through the feeding cylinder.

[0012] Preferably, a chamfer damper is provided between the chamfering mechanism and the clamping mechanism, a sensor is provided between the feeding mechanism and the clamping mechanism, and the chamfer damper and the sensor are both fixedly mounted on the top surface of the frame.

[0013] The present invention also provides an integrated processing method of the PPR pipe fixed-length cutting and chamfering machine as described above, comprising the following steps: Step 1: Place the PPR pipe to be processed on the material rack, and align it with the middle position of the third clamping block in the feeding mechanism and push it until the left end of the PPR pipe exceeds the set distance on the left side of the first clamping block in the clamping mechanism; Step 2: The telescopic rods of the first clamping cylinder and the second clamping cylinder in the clamping mechanism are extended, and the PPR pipe is clamped and fixed at a predetermined position through the first clamping block and the second clamping block; Step 3: The telescopic rod of the chamfering push cylinder in the chamfering mechanism is extended to push the motor base plate to move to the right along the first linear guide rail. At the same time, the gear motor drives the chamfering cutter to rotate to chamfer the left end of the PPR pipe. Step 4: After the chamfering process is completed, the telescopic rod of the chamfering push cylinder is retracted to drive the motor base plate to reset; Step 5: Start the cutting saw in the cutting mechanism, control the action of the cutting saw by pressing the lifting cylinder, and cut the PPR pipe to a fixed length; Step 6: After the cutting is completed, press the cylinder to control the cutting saw to reset; Step 7: The telescopic rod of the push cylinder in the unloading mechanism extends to push the chamfered and cut PPR pipe to unload the rack along the unloading slide; Step 8: The telescopic rods of the first clamping cylinder and the second clamping cylinder are retracted, and the telescopic rod of the third clamping cylinder is extended to drive the third clamping block to clamp the PPR pipe; Step 9: The telescopic rod of the feeding cylinder in the feeding mechanism extends to push the feeding seat plate to move forward along the second linear guide rail to deliver the PPR pipe to the designated position; Step 10: After the feeding is completed, the telescopic rod of the third clamping cylinder is retracted, the PPR tube is loosened, the telescopic rod of the feeding cylinder is retracted, and the feeding mechanism is reset to complete the feeding.

[0014] It can be seen from the above technical solutions that, compared with the prior art, the PPR pipe fixed-length cutting and chamfering machine provided by the present invention realizes the integrated operation of fixed-length cutting and chamfering of PPR pipes through the design of chamfering mechanism and cutting mechanism, simplifies the processing flow and improves production efficiency; through the design of clamping mechanism and feeding mechanism, it realizes the precise positioning and stable transportation of PPR pipes, effectively reduces the error of manual operation, improves the accuracy of cutting and chamfering, and thus improves the quality of products; by optimizing the equipment structure design, it reduces the complexity of the equipment, reduces the maintenance cost of the equipment, and improves the stability and reliability of the equipment. The present invention also has the following advantages: 1. Simplify the processing flow: The present invention integrates the fixed-length cutting and chamfering functions, avoiding the tedious operation of performing the operations in two sections on two devices, greatly simplifying the processing flow and improving the production efficiency; 2. Improve cutting accuracy: The present invention avoids the error of manual operation through precise mechanical structure design, and can accurately control the cutting length and chamfering angle, thereby improving the cutting and chamfering accuracy and ensuring the quality of the product; 3. Reduce production costs: The equipment structure of the present invention is simple in design and easy to maintain, which can effectively reduce production costs. At the same time, since the processing flow is simplified and the dependence on manual labor is reduced, the production cost is further reduced; 4. Improve production efficiency: The present invention reduces the steps of manual operation through automated operation, greatly improves production efficiency, and meets the needs of large-scale production.

[0015] In general, compared with the prior art, the present invention has the advantages of simple operation, high cutting precision, low production cost, high production efficiency, etc., and has high practical value and broad market prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0017] Figure 1 It is a front view of the PPR pipe fixed-length cutting and chamfering machine of the present invention.

[0018] Figure 2 It is a top view of the PPR pipe fixed-length cutting and chamfering machine of the present invention.

[0019] Figure 3 It is a left view of the PPR pipe fixed-length cutting and chamfering machine of the present invention.

[0020] Figure 4 It is a schematic diagram of the left-side cross-sectional structure of the second clamping cylinder of the present invention.

[0021] Figure 5 It is a schematic diagram of the left side cross-sectional structure of the feeding cylinder of the present invention.

[0022] Explanation of the accompanying drawings: frame -1, material rack -2, PPR pipe -3, first clamping block -4, second clamping block -5, third clamping block -6, first clamping cylinder -7, second clamping cylinder -8, third clamping cylinder -9, unloading slide -10, pushing cylinder -11, chamfering pushing cylinder -12, chamfering damper -13, pushing cylinder seat plate -14, gear motor -15, motor seat plate -16, first linear guide -17, second linear guide -18, chamfering knife -19, sensor -20, cutting saw -21, lifting cylinder -22, feeding damper -23, feeding seat plate -24, feeding cylinder -25. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Please see attached Figure 1-5 , is a PPR pipe fixed-length cutting and chamfering machine disclosed in the present invention.

[0025] The PPR pipe fixed-length cutting and chamfering machine provided by the present invention comprises a machine frame 1, a material rack 2, and a PPR pipe 3.

[0026] The top surface of the frame 1 is installed with a chamfering mechanism, a unloading mechanism, a clamping mechanism, and a feeding mechanism from left to right. A cutting mechanism is provided above the clamping mechanism, and a material receiving rack 2 is provided on the right side of the feeding mechanism. Specifically, the material receiving rack 2 is provided at the right end of the frame 1, and a PPR pipe 3 to be processed is provided above the material receiving rack 2, and the material receiving rack 2 supports the PPR pipe 3.

[0027] The chamfering mechanism comprises a chamfering push cylinder 12 , a push cylinder seat plate 14 , a gear motor 15 , a motor seat plate 16 , and a chamfering knife 19 .

[0028] The chamfering push cylinder 12 is fixedly connected to the frame 1 through the push cylinder seat plate 14. The top surface of the frame 1 is provided with a first linear guide 17. The length direction of the first linear guide 17 is arranged along the telescopic direction of the telescopic rod of the chamfering push cylinder 12. The left end of the motor seat plate 16 is connected to the telescopic rod of the chamfering push cylinder 12. The bottom surface of the motor seat plate 16 is slidably connected to the first linear guide 17 fixed on the top surface of the frame 1. The telescopic movement of the telescopic rod of the chamfering push cylinder 12 drives the motor seat plate 16 to slide left and right on the first linear guide 17. A gear motor 15 is provided on the motor seat plate 16. The axis of the gear motor 15 is parallel to the length direction of the first linear guide 17. The gear motor 15 is equipped with a chamfering knife 19. The chamfering knife 19 is used to chamfer the PPR pipe 3. Preferably, the chamfering knife 19 is a 45° chamfering knife.

[0029] In order to further optimize the above technical solution, two locking nuts are provided at the end of the telescopic rod of the chamfering pushing cylinder 12, and the pushing stroke of the chamfering pushing cylinder 12 is adjusted by adjusting the locking nuts.

[0030] In order to further optimize the above technical solution, the chamfering mechanism also includes a chamfering damper 13 fixed under the chamfering knife 19. The feed speed of the chamfering process is controlled by adjusting the resistance of the chamfering damper 13. The chamfering damper 13 can be fixedly installed on the top surface of the frame 1 by a bracket or other structure, and no specific limitation is made here.

[0031] The unloading mechanism comprises a unloading slide 10 and a pushing cylinder 11 .

[0032] The unloading chute 10 is fixedly installed on the top surface of the frame 1, and the front end of the unloading chute 10 is lower than the rear end. The front end serves as the outlet of the material. The pushing cylinder 11 is installed on the rear side of the unloading chute 10. The pushing cylinder 11 can be installed on the frame 1 through a supporting structure, and can also be installed on the unloading chute 10 through a supporting structure. The telescopic rod of the pushing cylinder 11 faces the unloading chute 10, and the telescopic rod of the pushing cylinder 11 can be extended to the rear port of the unloading chute 10 or extend into the unloading chute 10.

[0033] The clamping mechanism includes a first clamping cylinder 51 , a first clamping block 4 , a second clamping cylinder 8 and a second clamping block 5 .

[0034] The first clamping block 4 is installed on the telescopic rod of the first clamping cylinder 51. Preferably, there are two or more first clamping blocks 4, and the first clamping blocks 4 are arranged in a relative or circular array. Each first clamping block 4 is independently connected to a first clamping cylinder 51. Through the action of the first clamping cylinder 51, the multiple first clamping blocks 4 can be controlled to be clamped or opened to each other; the second clamping block 5 is installed on the telescopic rod of the second clamping cylinder 8. Preferably, there are two or more second clamping blocks 5, and the respective second clamping blocks 5 are arranged in a relative or circular array. Each second clamping block 5 is independently connected to a second clamping cylinder 8. Through the action of the second clamping cylinder 8, the multiple second clamping blocks 5 can be controlled to be clamped or opened to each other.

[0035] The cutting mechanism includes a cutting saw 21 and a pressing and lifting cylinder 22 .

[0036] The cutting saw 21 includes a saw blade and a protective cover, one end of the protective cover is hinged to the frame 1, and the other end is hinged to the telescopic rod of the lifting cylinder 22. The cutting saw is moved by the action of the telescopic rod of the lifting cylinder 22 to perform the cutting operation. The telescopic rod of the lifting cylinder 22 is connected to the cutting saw 21, and the cylinder barrel is connected to the frame 1 through a supporting structure. Specifically, the supporting structure can be a square or triangular frame, which is not specifically limited here. The end of the cylinder barrel of the lifting cylinder 22 is hinged to the supporting structure, so that when the lifting cylinder 22 drives the cutting saw 21 to work, the angle between the cylinder barrel and the supporting structure can be adjusted at any time according to the extended length of the telescopic rod of the lifting cylinder 22, which is more flexible and convenient, so that the cutting saw 21 has a larger range of motion.

[0037] The feeding mechanism includes a feeding damper 23 , a feeding seat plate 24 , a feeding cylinder 25 , a third clamping block 6 , and a third clamping cylinder 9 .

[0038] A second linear guide 18 is provided on the right side of the feeding damper 23. The second linear guide 18 is fixedly arranged on the top surface of the frame 1 and is parallel to the length direction of the first linear guide 17. A feeding seat plate 24 is slidably connected to the second linear guide 18. A third clamping cylinder 9 is provided on the feeding seat plate 24. A third clamping block 6 is installed on the telescopic rod of the third clamping cylinder 9. Preferably, there are two or more third clamping blocks 6, and each third clamping block 6 is arranged in a relative or annular array. Each third clamping block 6 is independently connected to a third clamping cylinder 9. Through the action of the third clamping cylinder 9, the multiple third clamping blocks 6 can be controlled to be clamped or opened with each other; the feeding seat plate 24 is telescopically connected to the left end of the material riding frame 2 through the feeding cylinder 25. Specifically, one of the cylinder barrel and the telescopic rod of the feeding cylinder 25 is arranged on the feeding seat plate 24, and the other is arranged on the material riding frame 2.

[0039] In order to further optimize the above technical solution, a sensor 20 is provided between the feeding mechanism and the clamping mechanism. Specifically, the sensor 20 can be fixedly installed on the top surface of the frame 1 by a bracket or other structure, and can detect the position of the PPR pipe 3. The specific structure of the bracket is not limited here.

[0040] The present invention provides an integrated processing method of a PPR pipe fixed-length cutting and chamfering machine, which is specifically as follows: Step 1: Place the PPR pipe 3 to be processed on the material rack 2, align it with the middle position of the third clamping block 6 and push it until one end exceeds the first clamping block by 2 cm; Step 2: The telescopic rods of the first clamping cylinder 51 and the second clamping cylinder 8 are extended, and the PPR pipe 3 is clamped and fixed at a predetermined position through the first clamping block 4 and the second clamping block 5; Step 3: The telescopic rod of the chamfering push cylinder 12 is extended for 2 seconds and then retracted, pushing the motor base plate 16 to move forward along the first linear guide rail 17. At the same time, the gear motor 15 drives the chamfering knife 19 to rotate to chamfer one end of the PPR pipe 3; Step 4: After the chamfering process is completed, the chamfering push cylinder 12 drives the motor base plate 16 to reset; Step 5: Start the cutting saw 21, and control the action of the cutting saw 21 by pressing the lifting cylinder 22 to cut the PPR pipe 3 to a fixed length. ; Step 6: After the cutting is completed, the cutting saw 21 is reset; Step 7: The telescopic rod of the push cylinder 11 extends to push the processed PPR pipe so that it can be unloaded along the unloading slide 10; Step 8: The telescopic rods of the first clamping cylinder 51 and the second clamping cylinder 8 are retracted, and the telescopic rod of the third clamping cylinder 27 is extended to drive the third clamping block 6 to clamp the PPR pipe 3; Step 9: The telescopic rod of the feeding cylinder 25 extends to push the feeding seat plate 24 to move forward along the second linear guide rail 18 to deliver the PPR pipe 3 to the designated position; Step 10: After the feeding is completed, the telescopic rod of the third clamping cylinder 9 is retracted, the PPR pipe 3 is released, the telescopic rod of the feeding cylinder 25 is retracted, and the feeding mechanism is reset to complete the feeding.

[0041] The present invention can greatly simplify the processing flow of fixed-length cutting and chamfering of PPR pipes through the above-mentioned integrated processing method of fixed-length cutting and chamfering, improve production efficiency, and at the same time ensure the accuracy of cutting and chamfering, thereby improving product quality.

[0042] It should be noted that the PPR pipe fixed-length cutting and chamfering machine of the present invention integrates fixed-length cutting and chamfering functions, simplifies the operation process, improves production efficiency, reduces production costs, and meets the market demand for efficient and low-cost pipe processing equipment; at the same time, the equipment of the present invention can improve the precision of PPR pipe cutting and chamfering, improve the quality of the product, and meet the market demand for high-quality pipe products; moreover, the equipment of the present invention has a simple structure and low maintenance cost, which further reduces the production cost and meets the market demand for low-cost and high-efficiency equipment. Therefore, the present invention has broad market application prospects and market demand.

[0043] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A PPR pipe fixed-length cutting and chamfering machine, characterized in that: The machine comprises a frame (1), wherein a chamfering mechanism is provided at the left end of the top surface of the frame (1), a discharge mechanism is provided on the right side of the chamfering mechanism, a clamping mechanism is provided on the right side of the discharge mechanism, a cutting mechanism is provided above the clamping mechanism, a feeding mechanism is provided on the right side of the clamping mechanism, a material receiving frame (2) is provided on the right side of the feeding mechanism, and a PPR pipe (3) to be processed is provided above the material receiving frame (2).

2. The PPR pipe fixed-length cutting and chamfering machine according to claim 1 is characterized in that: The chamfering mechanism comprises a chamfering push cylinder (12) and a motor base plate (16); the chamfering push cylinder (12) is fixedly connected to a frame (1) via a push cylinder base plate (14); the left end of the motor base plate (16) is connected to a telescopic rod of the chamfering push cylinder (12); the bottom surface of the motor base plate (16) is slidably connected to a first linear guide rail (17) fixedly arranged on the top surface of the frame (1); a gear motor (15) is arranged on the motor base plate (16); and a chamfering cutter (19) is mounted on the gear motor (15).

3. The PPR pipe fixed-length cutting and chamfering machine according to claim 2 is characterized in that: Two locking nuts are provided at the end of the telescopic rod of the chamfering pushing cylinder (12), and the pushing stroke of the chamfering pushing cylinder (12) is adjusted by adjusting the locking nuts.

4. The PPR pipe fixed-length cutting and chamfering machine according to claim 2 is characterized in that: The chamfering mechanism also includes a chamfering damper (13) fixed below the chamfering knife (19), and the feed speed of the chamfering process is controlled by adjusting the resistance of the chamfering damper (13).

5. The PPR pipe fixed-length cutting and chamfering machine according to claim 1 is characterized in that: The unloading mechanism comprises a unloading slideway (10) and a pushing cylinder (11) installed at the rear side of the unloading slideway (10), wherein the telescopic rod of the pushing cylinder (11) faces the unloading slideway (10).

6. The PPR pipe fixed-length cutting and chamfering machine according to claim 1, characterized in that: The clamping mechanism comprises a first clamping cylinder (7), a first clamping block (4), a second clamping cylinder (8) and a second clamping block (5); the first clamping block (4) is mounted on the telescopic rod of the first clamping cylinder (7), and the second clamping block (5) is mounted on the telescopic rod of the second clamping cylinder (8).

7. The PPR pipe fixed-length cutting and chamfering machine according to claim 1 is characterized in that: The cutting mechanism comprises a cutting saw (21) and a pressing and lifting cylinder (22); the telescopic rod of the pressing and lifting cylinder (22) is connected to the cutting saw (21), and the cylinder barrel is connected to the frame (1) via a supporting structure.

8. The PPR pipe fixed-length cutting and chamfering machine according to claim 1, characterized in that: The feeding mechanism comprises a feeding damper (23), a second linear guide rail (18) arranged on the right side of the feeding damper (23), a feeding seat plate (24) slidably connected above the second linear guide rail (18), a third clamping cylinder (9) being arranged on the feeding seat plate (24), a third clamping block (6) being installed on the telescopic rod of the third clamping cylinder (9), and the feeding seat plate (24) being telescopically connected to the left end of the material riding frame (2) via the feeding cylinder (25).

9. The PPR pipe fixed-length cutting and chamfering machine according to claim 1, characterized in that: A chamfer damper (13) is provided between the chamfering mechanism and the clamping mechanism, a sensor (20) is provided between the feeding mechanism and the clamping mechanism, and both the chamfer damper (13) and the sensor (20) are fixedly mounted on the top surface of the frame (1).

10. An integrated processing method of a PPR pipe fixed-length cutting and chamfering machine according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Place the PPR pipe (3) to be processed on the material rack (2), and align it with the middle position of the third clamping block (6) in the feeding mechanism and push it until the left end of the PPR pipe (3) exceeds the set distance to the left of the first clamping block (4) in the clamping mechanism; Step 2: The telescopic rods of the first clamping cylinder (7) and the second clamping cylinder (8) in the clamping mechanism are extended, and the PPR pipe (3) is clamped and fixed at a predetermined position through the first clamping block (4) and the second clamping block (5); Step 3: The telescopic rod of the chamfering push cylinder (12) in the chamfering mechanism is extended to push the motor base plate (16) to move rightward along the first linear guide rail (17). At the same time, the gear motor (15) drives the chamfering cutter (19) to rotate to chamfer the left end of the PPR pipe (3); Step 4: After the chamfering process is completed, the telescopic rod of the chamfering push cylinder (12) is retracted, driving the motor base plate (16) to reset; Step 5: Start the cutting saw (21) in the cutting mechanism, and control the movement of the cutting saw (21) by pressing and lifting the cylinder (22) to cut the PPR pipe (3) to a fixed length; Step 6: After the cutting is completed, the pressure-lifting cylinder (22) controls the cutting saw (21) to reset; Step 7: The telescopic rod of the push cylinder (11) in the unloading mechanism is extended to push the chamfered and cut PPR pipe so that it can be unloaded from the rack 1 along the unloading slideway (10); Step 8: The telescopic rods of the first clamping cylinder (7) and the second clamping cylinder (8) are retracted, and the telescopic rod of the third clamping cylinder (9) is extended, driving the third clamping block (6) to clamp the PPR pipe (3); Step 9: The telescopic rod of the feeding cylinder (25) in the feeding mechanism is extended to push the feeding base plate (24) to move forward along the second linear guide rail (18) to deliver the PPR pipe (3) to the designated position; Step 10: After the feeding is completed, the telescopic rod of the third clamping cylinder (9) is retracted, the PPR tube (3) is released, the telescopic rod of the feeding cylinder (25) is retracted, and the feeding mechanism is reset to complete the feeding.

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