Bevel laser cutting machine for PVC (polyvinyl chloride) pipe

Abstract

The invention belongs to the technical field of PVC pipe laser cutting, and particularly relates to a bevel laser cutting machine for PVC pipes, which is used for bevel cutting of square PVC pipes and comprises a case, a fastening pushing mechanism is mounted at the top of the case, a fixed connecting rod is fixedly mounted on one side of the case, and a driving assembly is fixedly mounted at one end, away from the case, of the fixed connecting rod. And a laser head is fixedly installed on the driving assembly, the laser head and the top of the machine box are arranged in an inclined mode, and the fastening pushing mechanism is used for pulling the square PVC pipe to move to the fixing connecting rod and fixing the square PVC pipe when the square PVC pipe is cut by the laser head. The driving assembly can drive the laser head to rotate around the square PVC pipe in a rectangular path, it is guaranteed that the laser head can conduct whole-circle laser cutting around the periphery of the square PVC pipe, in the cutting process, the distance between the laser head and the square PVC pipe is kept unchanged all the time, and the cutting efficiency is improved. Therefore, it is guaranteed that the cutting effect of the bevel opening of the end of the square PVC pipe is kept flat and consistent.

Description

Technical Field

[0001] The invention relates to the technical field of PVC pipe laser cutting, in particular to a bevel laser cutting machine for PVC pipes. Background Art

[0002] The laser cutting machine focuses the laser emitted from the laser into a high-power density laser beam through the optical path system. The laser beam irradiates the surface of the square PVC tube, causing the square PVC tube to reach the melting point or boiling point. At the same time, the high-pressure gas coaxial with the beam blows away the molten or vaporized metal. The laser cutting process replaces the traditional mechanical knife with an invisible beam. It has the characteristics of high precision, fast cutting, no limitation on cutting patterns, automatic typesetting to save materials, smooth incisions, and low processing costs. When the PVC square tube is connected vertically, the end of the PVC square tube is usually cut into a 45° slope by laser cutting equipment.

[0003] However, existing laser cutting equipment usually adopts a breakdown cutting method when performing 45° slope cutting on the end of a square PVC pipe. After the laser penetrates one side of the square PVC pipe, as the laser cuts the other side of the square PVC pipe, the distance between the laser head and the laser head becomes longer, which easily leads to poor laser cutting effect, making the slope cut of the square PVC pipe rough and uneven, which is not conducive to the subsequent connection of two square PVC pipes. For this reason, a bevel laser cutting machine for PVC pipes is proposed. Summary of the invention

[0004] In order to solve the shortcomings in the prior art, the present invention provides a bevel laser cutting machine for PVC pipes.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a bevel laser cutting machine for PVC pipes, which is used for bevel cutting of square PVC pipes, comprising a chassis, a fastening and pushing mechanism is installed on the top of the chassis, a fixed connecting rod is fixedly installed on one side of the chassis, a driving assembly is fixedly installed on the end of the fixed connecting rod away from the chassis, a laser head is fixedly installed on the driving assembly, and the laser head is inclined to the top of the chassis, the fastening and pushing mechanism is used to pull the square PVC pipe toward the fixed connecting rod and fix the square PVC pipe when the laser head cuts the square PVC pipe, and the driving assembly is used to drive the laser head to rotate in a rectangular path around the square PVC pipe.

[0006] Preferably, the driving assembly includes a rectangular frame 1 and a rectangular frame 2, wherein the rectangular frame 2 is located inside the rectangular frame 1, and the end of the fixed connecting rod away from the chassis is fixedly connected to the bottom of the rectangular frame 1, and a rectangular channel is formed between the rectangular frame 1 and the rectangular frame 2, and an I-shaped roller 1 is rotatably installed in the rectangular channel, and a circular shaft is rotatably installed on the I-shaped roller 1, and a fixing plate is fixedly installed on one end of the circular shaft close to the chassis, and the laser head is fixedly connected to a side of the fixing plate away from the rectangular frame 1.

[0007] Preferably, a roller is rotatably mounted on one side of the fixing plate close to the rectangular frame one, and the roller is rollingly connected to the outer side of the rectangular frame one.

[0008] Preferably, two fixed arms 1 are fixedly installed on the outer side of the rectangular frame 1, and the same base plate 1 is fixedly installed on one end of the two fixed arms 1 away from the rectangular frame 1, the base plate 1 is located on the side of the rectangular frame 1 away from the fixed plate, a base plate 2 is provided between the base plate 1 and the rectangular frame 1, fixed arms 2 are fixedly installed on both sides of the base plate 2, and the ends of the two fixed arms 2 away from the base plate 2 are fixedly connected to the side of the rectangular frame 2 away from the fixed plate, a side plate 1 and a side plate 2 are fixedly installed on the top of the base plate 1 and the fixed arms 2 respectively, a reduction connecting mechanism is provided between the side plate 1 and the side plate 2, and a motor 2 connected to the reduction connecting mechanism is fixedly installed on the top of the base plate 1.

[0009] Preferably, a rotating swing arm is fixedly mounted on the deceleration connection mechanism, a rectangular hole is opened on the rotating swing arm, an I-shaped roller is rotatably mounted in the rectangular hole, and the I-shaped roller is rotatably sleeved on the circular shaft.

[0010] Preferably, the reduction connection mechanism includes two planetary carriers, which are respectively fixedly connected to side plate one and side plate two, and the same rotating column is rotatably installed on the two planetary carriers, and the rotating column penetrates side plate one and side plate two and is rotatably connected to side plate one and side plate two, and the output shaft of motor two is fixedly connected to one end of the rotating column, and a plurality of cylinders distributed in a circular array are fixedly installed between the two planetary carriers, and gears are rotatably sleeved on the plurality of cylinders, and an outer gear ring is fixedly sleeved on the rotating column, and a plurality of gears are meshed with the outer gear ring, and the same inner gear ring is rotatably installed between the two planetary carriers, and a plurality of gears are meshed with the inner gear ring.

[0011] Preferably, the fastening and pushing mechanism includes a stand 1 and a stand 2 fixedly mounted on the top of the chassis, two guide rails fixedly mounted between the stand 1 and the stand 2, the two guide rails are slidably sleeved with the same slide, the bottom of the slide is fixedly mounted with a moving block, the moving block is threadably connected with a screw rod, the screw rod penetrates the stand 1 and the stand 2 and is rotatably connected to the stand 1 and the stand 2, the screw rod is fixedly mounted with a pulley 1 at one end of the screw rod away from the stand 1, the fastening and pushing mechanism also includes a motor 1 fixedly mounted on the inner wall of the top of the chassis, a pulley 2 is fixedly mounted on the output shaft of the motor 1, the pulley 2 and the pulley 1 are sleeved with the same synchronous belt that penetrates the chassis, a gantry 1 is fixedly mounted on the top of the slide, a pressure plate 1 is slidably mounted in the gantry 1, a cylinder 1 is fixedly mounted on the top of the gantry 1, and the piston rod of the cylinder 1 penetrates the gantry 1 and is fixedly connected to the top of the pressure plate 1.

[0012] Preferably, a fixing seat is fixedly installed on one side of the second stand close to the first stand, a gantry frame 2 is fixedly installed on the top of the fixing seat, a pressure plate 2 is slidably installed inside the second gantry frame, a cylinder 2 is fixedly installed on the top of the second gantry frame, and a piston rod of the cylinder 2 passes through the second gantry frame and is fixedly connected to the top of the second pressure plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can drive the laser head to rotate around the square PVC pipe in a rectangular path through the driving assembly, ensuring that the laser head can perform laser cutting around the outer circumference of the square PVC pipe in a full circle. During the cutting process, the distance between the laser head and the square PVC pipe remains unchanged, thereby ensuring that the cutting effect at the bevel of the end of the square PVC pipe remains smooth and consistent; 2. The square PVC tube can be pulled toward the laser head for cutting by tightening the pushing mechanism, and the square PVC tube can be kept stationary during the cutting process, ensuring that the laser head can cut the bevel at the end of the square PVC tube smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a PVC pipe bevel laser cutting machine proposed by the present invention; Figure 2 A schematic diagram of the structure of the drive assembly and laser head in a PVC pipe bevel laser cutting machine proposed by the present invention Figure 1 ; Figure 3 A schematic diagram of the structure of the drive assembly and laser head in a PVC pipe bevel laser cutting machine proposed by the present invention Figure 2 ; Figure 4 for Figure 3 The enlarged structural diagram of part A in the middle; Figure 5 A side sectional view of a speed reduction connection mechanism in a PVC pipe bevel laser cutting machine proposed by the present invention; Figure 6 This is a structural schematic diagram of a fastening and pushing mechanism in a PVC pipe bevel laser cutting machine proposed by the present invention; Figure 7 This is a schematic diagram of the structure of a PVC pipe bevel laser cutting machine and a square PVC pipe proposed by the present invention; Figure 8 This is a schematic diagram of a driving assembly and a laser head cutting a square PVC pipe in a PVC pipe bevel laser cutting machine proposed by the present invention.

[0015] In the figure: 1, chassis; 2, fastening and pushing mechanism; 21, stand 1; 22, stand 2; 23, guide rail; 24, slide plate; 25, fixed seat; 26, moving block; 27, screw rod; 28, pulley 1; 29, motor 1; 210, pulley 2; 211, gantry 1; 212, pressure plate 1; 213, cylinder 1; 214, gantry 2; 215, pressure plate 2; 216, cylinder 2; 3, fixed connecting rod; 4, driving assembly; 41, rectangular frame 1; 42, rectangular frame 2; 43, rectangular channel ; 44. I-shaped roller one; 45. round shaft; 46. reduction connection mechanism; 461. planetary carrier; 462. cylinder; 463. rotating column; 464. outer ring gear; 465. gear; 466. inner ring gear; 47. fixed plate; 48. roller; 49. fixed arm one; 410. bottom plate one; 411. side plate one; 412. fixed arm two; 413. bottom plate two; 414. motor two; 415. rotating swing arm; 416. rectangular hole; 417. I-shaped roller two; 418. side plate two; 5. laser head. DETAILED DESCRIPTION

[0016] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. 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.

[0017] Please refer to Figure 1-Figure 8The present invention provides a technical solution: a PVC tube bevel laser cutting machine, which is used for bevel cutting of square PVC tubes, comprising a chassis 1, a fastening and pushing mechanism 2 is installed on the top of the chassis 1, a fixed connecting rod 3 is fixedly installed on one side of the chassis 1, a driving component 4 is fixedly installed on the end of the fixed connecting rod 3 away from the chassis 1, a laser head 5 is fixedly installed on the driving component 4, and the laser head 5 is inclined to the top of the chassis 1, the fastening and pushing mechanism 2 is used to pull the square PVC tube to move toward the fixed connecting rod 3 and fix the square PVC tube when the laser head 5 cuts the square PVC tube, and the driving component 4 is used to drive the laser head 5 to rotate around the square PVC tube in a rectangular path.

[0018] The driving assembly 4 includes a rectangular frame 1 41 and a rectangular frame 2 42. The rectangular frame 2 42 is located inside the rectangular frame 1. The end of the fixed connecting rod 3 away from the chassis 1 is fixedly connected to the bottom of the rectangular frame 1 41. A rectangular channel 43 is formed between the rectangular frame 1 41 and the rectangular frame 2 42. An I-shaped roller 1 44 is rotatably installed in the rectangular channel 43. A circular shaft 45 is rotatably installed on the I-shaped roller 1 44. A fixing plate 47 is fixedly installed on one end of the circular shaft 45 close to the chassis 1. The laser head 5 is fixedly connected to a side of the fixing plate 47 away from the rectangular frame 41.

[0019] A roller 48 is rotatably mounted on one side of the fixed plate 47 close to the rectangular frame 41 , and the roller 48 is rollingly connected to the outer side of the rectangular frame 41 .

[0020] Furthermore, by providing the roller 48 , the fixing plate 47 can be prevented from rotating along with the circular shaft 45 , thereby ensuring that the laser head 5 fixed on the fixing plate 47 can always point to the center of the second rectangular frame 42 .

[0021] Two fixed arms 49 are fixedly installed on the outside of the rectangular frame 41, and the same bottom plate 410 is fixedly installed on one end of the two fixed arms 49 away from the rectangular frame 41. The bottom plate 410 is located on the side of the rectangular frame 41 away from the fixed plate 47. A bottom plate 2 413 is provided between the bottom plate 410 and the rectangular frame 41. Fixed arms 2 412 are fixedly installed on both sides of the bottom plate 2 413. The ends of the two fixed arms 2 412 away from the bottom plate 2 413 are fixedly connected to the side of the rectangular frame 2 42 away from the fixed plate 47. The tops of the bottom plate 410 and the fixed arms 2 412 are respectively fixedly installed with side plates 1 411 and 2 418. A speed reduction connection mechanism 46 is provided between the side plates 1 411 and 2 418. A motor 2 414 connected to the speed reduction connection mechanism 46 is fixedly installed on the top of the bottom plate 410.

[0022] A rotating swing arm 415 is fixedly mounted on the speed reduction connection mechanism 46 . A rectangular hole 416 is opened on the rotating swing arm 415 . An I-shaped roller 417 is rotatably mounted in the rectangular hole 416 . The I-shaped roller 417 is rotatably sleeved on the circular shaft 45 .

[0023] Furthermore, since the oblique cut of the square PVC tube is rectangular, the rectangular channel 43 is also rectangular. Therefore, when the circular shaft 45 moves in the rectangular channel 43, the distance between the circular shaft 45 and the second motor 414 will also change, and the circular shaft 45 will move in the rectangular hole 416. By setting the I-shaped roller 1 44, the friction between the round shaft 45 and the rectangular frame 1 41 and the rectangular frame 2 42 can be reduced. In addition, the round shaft 45 and the rectangular frame 1 41 and the rectangular frame 2 42 can be limited. By using the I-shaped roller 2 417, the friction between the round shaft 45 and the rectangular hole 416 can be reduced.

[0024] The reduction connection mechanism 46 includes two planetary carriers 461, which are fixedly connected to the side plate 1 411 and the side plate 2 418 respectively. The same rotating column 463 is rotatably installed on the two planetary carriers 461. The rotating column 463 penetrates the side plate 1 411 and the side plate 2 418 and is rotatably connected to the side plate 1 411 and the side plate 2 418. The output shaft of the motor 2 414 is fixedly connected to one end of the rotating column 463. A plurality of cylinders 462 distributed in a circular array are fixedly installed between the two planetary carriers 461. Gears 465 are rotatably sleeved on the plurality of cylinders 462. An outer gear ring 464 is fixedly sleeved on the rotating column 463. The plurality of gears 465 are meshed with the outer gear ring 464. The same inner gear ring 466 is rotatably installed between the two planetary carriers 461. The plurality of gears 465 are meshed with the inner gear ring 466.

[0025] Furthermore, the side plate 1 411 and the side plate 2 418 can be connected into a whole through two planetary frames 461 and multiple cylinders 462. In addition, the rectangular frame 1 41 and the rectangular frame 2 42 can be connected into a whole through two fixed arms 1 49, the bottom plate 1 410, two fixed arms 2 412 and the bottom plate 2 413, to ensure that when the circular shaft 45 moves in the rectangular channel 43, the position between the rectangular frame 1 41 and the rectangular frame 2 42 will not change easily.

[0026] The fastening and pushing mechanism 2 includes a stand 21 and a stand 22 fixedly mounted on the top of the chassis 1, two guide rails 23 fixedly mounted between the stand 21 and the stand 22, a slide plate 24 is slidably sleeved on the two guide rails 23, a moving block 26 is fixedly mounted on the bottom of the slide plate 24, a screw rod 27 is threadedly connected to the moving block 26, the screw rod 27 penetrates the stand 21 and the stand 22 and is rotatably connected to the stand 21 and the stand 22, a pulley 28 is fixedly mounted on the end of the screw rod 27 away from the stand 21, and the fastening and pushing mechanism 2 includes a stand 21 and a stand 22 fixedly mounted on the top of the chassis 1, two guide rails 23 are slidably sleeved with a same slide plate 24, a moving block 26 is fixedly mounted on the bottom of the slide plate 24, a screw rod 27 is threadedly connected to the moving block 26, the screw rod 27 penetrates the stand 21 and the stand 22 and is rotatably connected to the stand 21 and the stand 22, a pulley 28 is fixedly mounted on the end of the screw rod 27 away from the stand 21, The driving mechanism 2 also includes a motor 29 fixedly mounted on the top inner wall of the chassis 1, a pulley 210 is fixedly mounted on the output shaft of the motor 29, the pulley 210 and the pulley 28 are sleeved with the same synchronous belt that runs through the chassis 1, a gantry 211 is fixedly mounted on the top of the slide 24, a pressure plate 212 is slidably mounted in the gantry 211, a cylinder 213 is fixedly mounted on the top of the gantry 211, and a piston rod of the cylinder 213 runs through the gantry 211 and is fixedly connected to the top of the pressure plate 212.

[0027] A fixed seat 25 is fixedly installed on one side of the stand 22 close to the stand 1 21, a gantry 214 is fixedly installed on the top of the fixed seat 25, a pressure plate 215 is slidably installed in the gantry 214, a cylinder 216 is fixedly installed on the top of the gantry 214, and a piston rod of the cylinder 216 penetrates the gantry 214 and is fixedly connected to the top of the pressure plate 215.

[0028] In this embodiment: when in use, the square PVC tube is passed through the gantry 1 211 and the gantry 214, and then the cylinder 1 213 is controlled to extend, so that the pressing plate 1 212 moves down and presses down the square PVC tube, and then the motor 1 29 is started, the motor 1 29 rotates and drives the pulley 1 28 to rotate through the synchronous belt, and the pulley 1 28 then drives the screw rod 27 to rotate, and the screw rod 27 rotates and drives the slide plate 24 to move toward the fixed seat 25 through the moving block 26. At this time, the end of the square PVC tube can move toward the driving component 4 and enter the rectangular frame 2 42, and then the cylinder 2 216 is controlled to extend, so that the pressing plate 215 moves down and presses down the square PVC tube; Continuing from the above, start the second motor 414, the second motor 414 drives the rotating column 463 to rotate, the rotating column 463 drives the multiple gears 465 to rotate through the outer ring gear 464, the multiple gears 465 then drive the inner ring gear 466 to rotate, the inner ring gear 466 then drives the rotating swing arm 415 to rotate, the rotating swing arm 415 then drives the circular shaft 45 to rotate in a rectangular path in the rectangular channel 43, the circular shaft 45 then drives the laser head 5 to rotate around the square PVC pipe end in a rectangular path through the fixed plate 47, thereby completing the cutting of the square PVC pipe end, in addition, since the laser head 5 is inclined, the oblique cutting of the square PVC pipe end can be completed.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A PVC tube bevel laser cutting machine, used for bevel cutting of square PVC tubes, comprising a chassis (1), characterized in that: A fastening and pushing mechanism (2) is installed on the top of the chassis (1); a fixed connecting rod (3) is fixedly installed on one side of the chassis (1); a driving assembly (4) is fixedly installed on one end of the fixed connecting rod (3) away from the chassis (1); a laser head (5) is fixedly installed on the driving assembly (4); the laser head (5) is arranged obliquely with respect to the top of the chassis (1); the fastening and pushing mechanism (2) is used to pull the square PVC pipe toward the fixed connecting rod (3) and to fix the square PVC pipe when the laser head (5) cuts the square PVC pipe; and the driving assembly (4) is used to drive the laser head (5) to rotate around the square PVC pipe in a rectangular path.

2. The bevel laser cutting machine for PVC pipes according to claim 1, characterized in that: The driving assembly (4) comprises a rectangular frame 1 (41) and a rectangular frame 2 (42), wherein the rectangular frame 2 (42) is located inside the rectangular frame 1 (41), and one end of the fixed connecting rod (3) away from the chassis (1) is fixedly connected to the bottom of the rectangular frame 1 (41), and a rectangular channel (43) is formed between the rectangular frame 1 (41) and the rectangular frame 2 (42), and an I-shaped roller 1 (44) is rotatably mounted in the rectangular channel (43), and a round shaft (45) is rotatably mounted on the I-shaped roller 1 (44), and a fixing plate (47) is fixedly mounted on one end of the round shaft (45) close to the chassis (1), and the laser head (5) is fixedly connected to a side of the fixing plate (47) away from the rectangular frame 1 (41).

3. The bevel laser cutting machine for PVC pipes according to claim 2, characterized in that: A roller (48) is rotatably mounted on one side of the fixed plate (47) close to the rectangular frame one (41), and the roller (48) is rollingly connected to the outer side of the rectangular frame one (41).

4. The bevel laser cutting machine for PVC pipes according to claim 2, characterized in that: Two fixed arms (49) are fixedly mounted on the outside of the rectangular frame (41); a bottom plate (410) is fixedly mounted on one end of the two fixed arms (49) away from the rectangular frame (41); the bottom plate (410) is located on a side of the rectangular frame (41) away from the fixed plate (47); a bottom plate (413) is provided between the bottom plate (410) and the rectangular frame (41); fixed arms (412) are fixedly mounted on both sides of the bottom plate (413); and the two fixed arms (412) are fixedly mounted on the two ends of the two fixed arms (49). One end of the arm (412) away from the bottom plate (413) is fixedly connected to the side of the rectangular frame (42) away from the fixed plate (47); the tops of the bottom plate (410) and the fixed arm (412) are respectively fixedly mounted with the side plate (411) and the side plate (418); a speed reduction connection mechanism (46) is provided between the side plate (411) and the side plate (418); and the top of the bottom plate (410) is fixedly mounted with the motor (414) connected to the speed reduction connection mechanism (46).

5. The bevel laser cutting machine for PVC pipes according to claim 4, characterized in that: A rotating swing arm (415) is fixedly mounted on the speed reduction connection mechanism (46), a rectangular hole (416) is opened on the rotating swing arm (415), an I-shaped roller (417) is rotatably mounted in the rectangular hole (416), and the I-shaped roller (417) is rotatably sleeved on the circular shaft (45).

6. The bevel laser cutting machine for PVC pipes according to claim 4, characterized in that: The speed reduction connection mechanism (46) comprises two planetary carriers (461), the two planetary carriers (461) are fixedly connected to the side plate 1 (411) and the side plate 2 (418) respectively, and the same rotating column (463) is rotatably installed on the two planetary carriers (461), the rotating column (463) passes through the side plate 1 (411) and the side plate 2 (418) and is rotatably connected to the side plate 1 (411) and the side plate 2 (418), and the output shaft of the motor 2 (414) is connected to the rotating column (463). ), a plurality of cylinders (462) distributed in a circumferential array are fixedly installed between the two planet carriers (461), gears (465) are rotatably sleeved on the plurality of cylinders (462), an outer gear ring (464) is fixedly sleeved on the rotating cylinder (463), and the plurality of gears (465) are meshed with the outer gear ring (464), and the same inner gear ring (466) is rotatably installed between the two planet carriers (461), and the plurality of gears (465) are meshed with the inner gear ring (466).

7. The bevel laser cutting machine for PVC pipes according to claim 1, characterized in that: The fastening and pushing mechanism (2) comprises a stand 1 (21) and a stand 2 (22) fixedly mounted on the top of the chassis (1); two guide rails (23) are fixedly mounted between the stand 1 (21) and the stand 2 (22); a slide plate (24) is slidably sleeved on the two guide rails (23); a moving block (26) is fixedly mounted on the bottom of the slide plate (24); a screw rod (27) is threadedly connected to the moving block (26); the screw rod (27) penetrates the stand 1 (21) and the stand 2 (22) and is rotatably connected to the stand 1 (21) and the stand 2 (22); a pulley 1 (28) is fixedly mounted on one end of the screw rod (27) away from the stand 1 (21); The fastening and pushing mechanism (2) further comprises a motor 1 (29) fixedly mounted on the inner wall of the top of the chassis (1); a pulley 2 (210) is fixedly mounted on the output shaft of the motor 1 (29); the pulley 2 (210) and the pulley 1 (28) are sleeved with a same synchronous belt that passes through the chassis (1); a gantry 1 (211) is fixedly mounted on the top of the slide plate (24); a pressure plate 1 (212) is slidably mounted in the gantry 1 (211); a cylinder 1 (213) is fixedly mounted on the top of the gantry 1 (211); a piston rod of the cylinder 1 (213) passes through the gantry 1 (211) and is fixedly connected to the top of the pressure plate 1 (212).

8. The bevel laser cutting machine for PVC pipes according to claim 7, characterized in that: A fixed seat (25) is fixedly installed on one side of the second stand (22) close to the first stand (21), a gantry frame (214) is fixedly installed on the top of the fixed seat (25), a pressure plate (215) is slidably installed in the second gantry frame (214), a cylinder (216) is fixedly installed on the top of the second gantry frame (214), and a piston rod of the cylinder (216) penetrates the second gantry frame (214) and is fixedly connected to the top of the pressure plate (215).

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