A PVC pipe laser marking machine

Abstract

The present invention relates to the technical field of laser marking, and discloses a laser marking machine for PVC pipes, which includes a workbench. Above the workbench, there is a marked pipe. At the bottom of the marked pipe, there is a transportation component. On the outer side of the marked pipe, there is a clamping component. Above the marked pipe, there is a laser marking instrument. On one side of the laser marking instrument, there is an adjustment component. Through the adjustment component, the height of the laser marking instrument can be automatically adjusted according to the diameter of the marked pipe, so that for each marked pipe, the position distance between the laser marking instrument and it is equal, which helps to maintain consistent marking depth and clarity. Moreover, when the adjustment component changes the height of the laser marking instrument, there is no need to set up an additional device for adjustment. During the transportation process of the marked pipe, it can be directly changed according to its diameter, saving operation time and reducing the risk of marking deviation and inconsistency introduced due to operator error.

Description

Technical Field

[0001] The present invention belongs to the technical field of laser marking, and particularly relates to a laser marking machine for PVC pipes. Background Art

[0002] A laser marking machine uses a laser beam to make permanent marks on various different substances. The marking effect is achieved by evaporating the surface layer material to expose the deeper layer material, thereby engraving beautiful patterns, trademarks, and characters.

[0003] Some prior art also proposes laser marking solutions for PVC pipes. For example, a Chinese patent with the publication number CN220427154U discloses a laser marking machine for PVC pipes, which includes an operating table. A laser marking head is arranged directly above the operating table. One side of the top of the operating table is fixedly provided with an annular frame in the left - right axial direction, and the extension line of the central axis of the annular frame is located directly below the laser marking head. Two symmetrically arranged adjusting rods in the front - rear direction are engaged and slidably connected to the outer circumferential surface of the annular frame. Clamping blocks are fixedly connected to the opposite sides of the two adjusting rods. In the present utility model, a PVC pipe fitting can be inserted into the annular frame and located between the two clamping blocks. Then, under the action of the moving component, the two adjusting rods can move towards each other, so that the two clamping blocks can clamp the PVC pipe fitting, and one side of the surface of the pipe fitting can be exactly located directly below the laser marking head, ensuring that the laser marking on the surface of the PVC pipe fitting by the laser marking head will not have a position deviation.

[0004] When the existing device performs laser marking, after the position of the pipe is fixed, due to the different diameters of each pipe, the height position of the marking instrument needs to be manually adjusted before each marking to make the distance between the marking instrument and each pipe the same, ensuring the consistency of the depth of the marked pattern. Manually adjusting the height of the marking instrument results in low adjustment accuracy, reduces the degree of automation of the production line, and increases the production cycle.

[0005] Therefore, the present invention provides a laser marking machine for PVC pipes. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A laser marking machine for PVC pipes according to the present invention includes a workbench. Above the workbench, there is a marked pipe. At the bottom of the marked pipe, there is a transportation component, which can transport the marked pipe to the marking position. On the outer side of the marked pipe, there is a clamping component, which can automatically clamp according to the diameter of the marked pipe. Above the marked pipe, there is a laser marking instrument. On one side of the laser marking instrument, there is an adjustment component, which can automatically adjust the height according to the diameter of the marked pipe to ensure that the distance between the laser marking instrument and each marked pipe is the same.

[0008] Preferably, the clamping component includes two bent side plates. On one side of each of the two bent side plates, there are symmetrically and fixedly connected connecting platforms. At the bottom of multiple connecting platforms, there are fixedly connected inner sliders one. At the top of the workbench, there are fixedly installed bottom fixing seats. The inner walls of every two inner sliders one are slidably connected with the inner walls of the bottom fixing seats.

[0009] Preferably, on one side of each of the two bent side plates, there are symmetrically and fixedly connected push rods one. At the top of the workbench, there is a fixedly installed fixing frame. At the top of the fixing frame, there is a vertically connected plate. The outer walls of every two push rods one are respectively inserted into the inner walls of the two vertically connected plates. On the outside of each push rod one, there is a return spring one. The two ends of the return spring one are respectively fixedly connected with one side of the bent side plate and one side of the vertically connected plate. One end of each return spring one is fixedly connected with a limiting sleeve one.

[0010] Preferably, the adjustment component includes an extrusion push block. Above the extrusion push block, there is a fixedly connected inner slider two. At the top of the vertically connected plate, there is an opening fixing seat. The inner wall of the opening fixing seat is slidably connected with the outer wall of the inner slider two. The laser marking instrument is located on one side of the inner slider two.

[0011] Preferably, on one side of the inner slider two, there is a fixedly connected motor. The output shaft of the motor is fixedly connected with a threaded rod. The outer wall of the threaded rod is threadedly connected with an internally threaded block. The bottom of the internally threaded block is fixedly connected with the top of the laser marking instrument.

[0012] Preferably, on both sides of the opening fixing seat, there are sliding grooves. On both sides of the inner slider two, there are fixedly connected L-shaped connecting rods. The L-shaped connecting rods are slidably connected with the sliding grooves and are mutually adapted. One end of each of the two L-shaped connecting rods is fixedly connected with an inner sliding groove seat. On both sides of the internally threaded block, there are fixedly connected connecting blocks. The two connecting blocks are respectively slidably connected with the inner walls of the two inner sliding groove seats and are mutually adapted. Between one side of the two inner sliding groove seats, there is a fixedly connected connecting plate. One end of the threaded rod is rotatably connected with the inner wall of the connecting plate.

[0013] Preferably, side rods are fixedly connected to one side of each of the two inner chute seats. Inner slider threes are fixedly connected to the outer walls of the two side rods. Chute seats are fixedly connected to the tops of the two vertical plates. The inner walls of the two chute seats are slidably connected to and adapted to the outer walls of the inner slider threes. A connecting rod is fixedly connected to the inner wall of the extrusion push block. A connecting member is fixedly connected between the connecting rod and the side rod.

[0014] Preferably, a push rod two is fixedly connected to the top of the inner slider two. A return spring two is arranged outside the push rod two. The two ends of the return spring two are respectively fixedly connected to the top of the inner slider two and the inner side of the top of the opening fixed seat. A limit sleeve two is fixedly connected to the top of the return spring two. The return spring two passes through the inside of the opening fixed seat.

[0015] Preferably, the transportation component includes a plurality of transmission cylinders. A transmission belt is connected in transmission between the outer walls of the plurality of transmission cylinders. Connecting sleeve rods are rotatably connected to both ends of each transmission cylinder. Each pair of connecting sleeve rods is fixedly connected. Two clamping platforms are fixedly connected to the top of the workbench. The two clamping platforms are respectively rotatably connected to one end of the two transmission cylinders. A stepping motor is fixedly connected to one end of one of the transmission cylinders. The stepping motor is fixedly installed on the top of the workbench.

[0016] Preferably, multiple placement platforms are fixedly connected to the outer wall of the transmission belt. A propulsion seat is fixedly connected to one side of each placement platform. The propulsion seat is fixedly installed on the outer wall of the transmission belt.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. For the PVC pipe laser marking machine of the present invention: through the adjustment component, the height of the laser marking instrument can be automatically adjusted according to the diameter of the marked pipe, so that for each marked pipe, the position distance between the laser marking instrument and it is equal, which helps to maintain a consistent marking depth and clarity. No matter how the diameter of the pipe changes, the marking quality can be guaranteed, and there will be no quality differences due to different diameters. Moreover, the adjustment component changes the height of the laser marking instrument without setting additional devices for adjustment. The marked pipe can be directly changed according to its diameter during transportation, saving operation time and reducing the risk of marking deviation and inconsistency introduced by operator error.

[0019] 2. A PVC pipe laser marking machine according to the present invention: When the marked pipe is conveyed by the conveying component to the lower part of the laser marking instrument through the clamping component, it will slowly extrude the bending side plates on both sides outwards, so that the distance between the two bending side plates is expanded. When the marked pipe enters between the two bending side plates, the distance between the two bending side plates is the same as the diameter of the entered marked pipe, realizing the effect of automatically clamping the marked pipe to be marked, and achieving the function that the clamping component can quickly and automatically clamp according to the diameter of the marked pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 is the overall three-dimensional view of the present invention;

[0022] Figure 2 is the structural schematic diagram of the marked pipe in the present invention;

[0023] Figure 3 is the structural schematic diagram of the bending side plate in the present invention;

[0024] Figure 4 is the structural schematic diagram of the motor in the present invention;

[0025] Figure 5 is the structural schematic diagram of the extrusion push block in the present invention;

[0026] Figure 6 is the structural schematic diagram of the threaded rod in the present invention;

[0027] Figure 7 is the structural schematic diagram of the inner slider II in the present invention;

[0028] Figure 8 is the structural schematic diagram of the transmission belt in the present invention.

[0029] In the figure: 1, workbench; 2, marked pipe; 3, bending side plate; 4, connecting table; 5, inner slider I; 6, bottom fixing seat; 7, vertical plate; 8, fixing frame; 9, push rod I; 10, return spring I; 11, limit sleeve I; 12, extrusion push block; 13, inner slider II; 14, open fixing seat; 15, motor; 16, threaded rod; 17, internal thread block; 18, laser marking instrument; 19, connecting block; 20, inner chute seat; 21, connecting plate; 22, L-shaped connecting rod; 23, chute; 24, push rod II; 25, return spring II; 26, limit sleeve II; 27, connecting rod; 28, connecting piece; 29, side rod; 30, inner slider III; 31, chute seat; 32, transmission cylinder; 33, transmission belt; 34, connecting sleeve rod; 35, clamping table; 36, stepper motor; 37, placing table; 38, propulsion seat. DETAILED DESCRIPTION OF THE INVENTION

[0030] In order to make the technical means, creative features, achieved objectives and effects realized by the present invention easy to understand: The following combines specific embodiments: The present invention is further elaborated.

[0031] As Figures 1 to 8 shown, the present invention provides a technical solution: A laser marking machine for PVC pipes, including a workbench 1, a marked pipe 2 is arranged above the workbench 1, a transportation component is arranged at the bottom of the marked pipe 2, and the transportation component can transport the marked pipe 2 to the marking position. A clamping component is arranged outside the marked pipe 2, and the clamping component can automatically clamp according to the diameter of the marked pipe 2. A laser marking instrument 18 is arranged above the marked pipe 2, and an adjusting component is arranged on one side of the laser marking instrument 18. The adjusting component can automatically adjust the height according to the diameter of the marked pipe 2 to ensure that the distance between the laser marking instrument 18 and each marked pipe 2 is the same.

[0032] During operation: In the existing device during laser marking, after the position of the pipe is fixed, since the diameter of each pipe is different, the height position of the marking instrument needs to be manually adjusted before each marking to make the distance between the marking instrument and each pipe the same, ensuring the consistency of the depth of the marked pattern. Manually adjusting the height of the marking instrument results in low adjustment accuracy, reduces the automation degree of the production line, and increases the production cycle. Through the embodiments of this solution, in specific use, the PVC pipes to be marked are placed above the transportation component, and the transportation component transports the pipes to directly below the laser marking instrument 18. During transportation, the marked pipe 2 will first be transported to the clamping component, and the clamping component can automatically clamp according to the diameter of the marked pipe 2 without setting an additional adjusting device to enable the clamp to clamp different marked pipes 2 with different diameters. During transportation, the marked pipe 2 will also touch the adjusting component, and the adjusting component can automatically adjust the height of the laser marking instrument 18 according to the diameter of the marked pipe 2, so that for each marked pipe 2, the position distance between the laser marking instrument 18 and it is equal. Through the above embodiments, it helps to maintain consistent marking depth and clarity. Regardless of how the diameter of the pipe changes, the marking quality can be guaranteed, and there will be no quality differences due to different diameters. Moreover, the adjusting component changes the height of the laser marking instrument 18 without setting an additional device for adjustment. The marked pipe 2 can directly change according to its diameter during transportation, saving operation time and reducing the risk of marking deviation and inconsistency introduced by operator error.

[0033] As Figures 2 to 3As shown, the clamping assembly includes two bent side plates 3. On one side of each of the two bent side plates 3, connection platforms 4 are symmetrically and fixedly connected. At the bottom of multiple connection platforms 4, inner slider one 5 is fixedly connected. On the top of the workbench 1, bottom fixed seats 6 are fixedly installed. The inner walls of every two inner slider one 5 are slidably connected with the inner walls of the bottom fixed seats 6.

[0034] During operation: When the marked pipe 2 is conveyed by the conveying assembly to the lower part of the laser marker 18, it will slowly extrude the two bent side plates 3 on both sides, so that the distance between the two bent side plates 3 is expanded. When the marked pipe 2 enters between the two bent side plates 3, the distance between the two bent side plates 3 is the same as the diameter of the entering marked pipe 2, so that the marked pipe 2 will not rotate during the marking process. And through the inner slider one 5 and the bottom fixed seat 6, when the two bent side plates 3 expand towards both sides, they will only move along a straight line, avoiding position deviation. Through the above embodiments, the effect of automatically clamping the marked pipe 2 to be marked is achieved, and the clamping assembly can quickly and automatically clamp according to the diameter of the marked pipe 2.

[0035] As Figures 2 to 3 As shown, on one side of each of the two bent side plates 3, push rods one 9 are symmetrically and fixedly connected. On the top of the workbench 1, a fixed frame 8 is fixedly installed. On the top of the fixed frame 8, a vertical plate 7 is fixedly connected. The outer walls of every two push rods one 9 are respectively inserted into the inner walls of the two vertical plates 7. A return spring one 10 is arranged outside each push rod one 9. The two ends of the return spring one 10 are respectively fixedly connected with one side of the bent side plate 3 and one side of the vertical plate 7. One end of each push rod one 9 is fixedly connected with a limit sleeve one 11.

[0036] During operation: When the two bent side plates 3 expand outwards to automatically clamp and complete the marking, the conveying assembly will continue to move to transport the marked pipe out of the clamping assembly. At this time, before the two bent side plates 3 wait for the next pipe to enter, they will quickly reset through the push rod one 9 and the return spring one 10, so that a small gap is maintained between the two bent side plates 3, which is convenient for extruding the next pipe to complete the clamping. And through the limit sleeve one 11, the two bent side plates 3 can maintain a certain gap in the natural state, avoiding that the entering pipe cannot extrude the two bent side plates 3 to expand.

[0037] As Figures 4 to 5 As shown, the adjusting assembly includes an extrusion push block 12. Above the extrusion push block 12, an inner slider two 13 is fixedly connected. On the top of the vertical plate 7, an open fixed seat 14 is fixedly connected. The inner wall of the open fixed seat 14 is slidably connected with the outer wall of the inner slider two 13. The laser marker 18 is located on one side of the inner slider two 13.

[0038] During operation: When the marked pipe 2 is transported by the transportation component and enters the clamping component, the marked pipe 2 will upwardly press the extrusion push block 12. The extrusion push block 12 will drive the second inner slider 13 to slide upward inside the opening fixed seat 14, and the laser marking instrument 18 will move upward following the second inner slider 13. Moreover, the larger the diameter of the marked pipe 2, the farther the extrusion push block 12 will be extruded, the farther the second inner slider 13 will move upward, and the farther the laser marking instrument 18 will move upward. Therefore, through the above embodiments, when the marked pipe 2 is about to move below the laser marking instrument 18, the height of the laser marking instrument 18 will be changed according to the diameter of the marked pipe 2, so that for each marked pipe 2, the position distance between the laser marking instrument 18 and it is equal, ensuring the consistency and clarity of the marking imprint.

[0039] As Figures 5 to 6 shown, one side of the second inner slider 13 is fixedly connected with a motor 15. The output shaft of the motor 15 is fixedly connected with a threaded rod 16. The outer wall of the threaded rod 16 is threadedly connected with an internal thread block 17. The bottom of the internal thread block 17 is fixedly connected with the top of the laser marking instrument 18.

[0040] During operation: When the second inner slider 13 moves upward, it will drive the laser marking instrument 18 to move upward through the internal thread block 17. After the height position of the laser marking instrument 18 is adjusted, the motor 15 is started. Its output shaft will drive the threaded rod 16 to rotate. When the threaded rod 16 rotates, it will drive the internal thread block 17 to move. The internal thread block 17 will drive the laser marking instrument 18 to move horizontally, achieving the effect of being able to mark anywhere on the upper surface of the marked pipe 2 and playing the role of improving the marking range.

[0041] As Figures 5 to 7 shown, sliding grooves 23 are formed on both side surfaces of the opening fixed seat 14. Both sides of the second inner slider 13 are fixedly connected with L-shaped connecting rods 22. The L-shaped connecting rods 22 are slidably connected with the sliding grooves 23 and are mutually adapted. One end of each of the two L-shaped connecting rods 22 is fixedly connected with an inner sliding groove seat 20. Both sides of the internal thread block 17 are fixedly connected with connecting blocks 19. The two connecting blocks 19 are respectively slidably connected with the inner walls of the two inner sliding groove seats 20 and are mutually adapted. A connecting plate 21 is fixedly connected between one sides of the two inner sliding groove seats 20. One end of the threaded rod 16 is rotatably connected with the inner wall of the connecting plate 21.

[0042] During operation: Through the sliding connection between the connecting blocks 19 arranged on both sides of the internal thread block 17 and the internal chute seats 20, when the threaded rod 16 rotates, the internal thread block 17 will move. And the two internal chute seats 20 are fixedly connected to the second internal slider 13 through the L-shaped connecting rod 22. When the second internal slider 13 drives the internal thread block 17 to move, the two internal chute seats 20 will also move, and a certain height can be always maintained between the internal thread block 17 and the internal chute seats 20.

[0043] As Figures 4 to 5 shown, side rods 29 are fixedly connected to one side of the two internal chute seats 20, internal sliders three 30 are fixedly connected to the outer walls of the two side rods 29, chute seats 31 are fixedly connected to the tops of the two vertical plates 7, and the inner walls of the two chute seats 31 are slidably connected to and adapted to the outer walls of the internal sliders three 30. A connecting rod 27 is fixedly connected to the inner wall of the extrusion push block 12, and a connecting member 28 is fixedly connected between the connecting rod 27 and the side rod 29.

[0044] During operation: Since the threaded rod 16, the internal thread block 17, the laser marking machine 18, and the internal chute seats 20 all need to move through the movement of the second internal slider 13 and are all located on one side of the second internal slider 13, when the second internal slider 13 moves, the structure arranged on one side is extremely unstable during movement. Through the connecting rod 27, when the extrusion push block 12 moves upward, it will push the side rod 29 upward through the connecting member 28, and the side rod 29 will also drive the internal chute seat 20 to move upward, increasing the stability of the two internal chute seats 20 when moving upward. And the arranged internal sliders three 30 and chute seats 31 prevent the two internal chute seats 20 from shifting in position when moving upward.

[0045] As Figures 6 to 7 shown, a second push rod 24 is fixedly connected to the top of the second internal slider 13. A second return spring 25 is arranged outside the second push rod 24, and the two ends of the second return spring 25 are respectively fixedly connected to the top of the second internal slider 13 and the inner side of the top of the opening fixed seat 14. A second limit sleeve 26 is fixedly connected to the top of the second push rod 24, and the second return spring 25 passes through the inside of the opening fixed seat 14.

[0046] During operation: When the marking of the marked pipe 2 is completed, the transportation component will transport the marked pipe 2 out. At this time, the bottom of the extrusion push block 12 is not squeezed by the marked pipe 2. Through the second push rod 24 and the second return spring 25, the second internal slider 13 and the extrusion push block 12 are lowered and reset, and the laser marking machine 18 will also return to the initial state, facilitating the upward extrusion of the extrusion push block 12 again before marking the next marked pipe 2, thereby automatically adjusting the height position of the laser marking machine 18. Repeating this process realizes that the height position of the laser marking machine 18 can be automatically adjusted according to the diameter of each pipe before marking.

[0047] AsFigure 1 and Figure 8 As shown in Figure 8 , the transportation component includes a plurality of driving cylinders 32. A transmission belt 33 is drivingly connected between the outer walls of the plurality of driving cylinders 32. A connecting sleeve rod 34 is rotatably connected to both ends of each driving cylinder 32. Each connecting sleeve rod 34 is fixedly connected. Two clamping platforms 35 are fixedly connected to the top of the workbench 1. The two clamping platforms 35 are respectively rotatably connected to one end of the two driving cylinders 32. A stepping motor 36 is fixedly connected to one end of one of the driving cylinders 32. The stepping motor 36 is fixedly installed on the top of the workbench 1.

[0048] During operation: When it is necessary to start the transportation component to transport the marked pipe 2, the stepping motor 36 is started. Its output shaft will drive one of the driving cylinders 32 to rotate. The rotation of the driving cylinder 32 will drive the transmission belt 33 to transmit, thus achieving the effect of transporting the marked pipe 2. The plurality of driving cylinders 32 are interconnected through the connecting sleeve rod 34, and the position of the transmission belt 33 is fixed by the clamping platform 35.

[0049] As Figure 1 and Figure 8 As shown in Figure 8 , a plurality of placing platforms 37 are fixedly connected to the outer wall of the transmission belt 33. A pushing seat 38 is fixedly connected to one side of each placing platform 37. The pushing seat 38 is fixedly installed on the outer wall of the transmission belt 33.

[0050] During operation: When placing the marked pipe 2 on the transportation component, it is necessary to place the marked pipe 2 above the two placing platforms 37 in each group, and one end is close to one side of the pushing seat 38. Through the pushing seat 38, it is avoided that when the marked pipe 2 enters the extrusion component and the adjustment component, there is not enough power to extrude the two bending side plates 3 and the extrusion push block 12, causing the two bending side plates 3 to move outward and the extrusion push block 12 to move upward. And through the placing platform 37, it is ensured that the marked pipe 2 will not roll off the top of the transmission belt 33 when transporting the marked pipe 2.

[0051] Workflow: First, the marked pipe 2 needs to be placed above the two placement platforms 37 of each group, with one end closely against one side of the pushing seat 38. Start the stepping motor 36, and its output shaft will drive one of the transmission cylinders 32 to rotate. The rotation of the transmission cylinder 32 will drive the transmission belt 33 to transmit. During the transmission of the transmission belt 33, the marked pipe 2 is transported. When the marked pipe 2 is transported to the lower part of the laser marker 18 through the conveying component, it will slowly squeeze the two bending side plates 3 on both sides outward, so that the distance between the two bending side plates 3 is expanded. When the marked pipe 2 enters between the two bending side plates 3, the distance between the two bending side plates 3 is the same as the diameter of the entered marked pipe 2, so that the marked pipe 2 will not rotate during the marking process, and through the inner slider one 5 and the bottom fixing seat 6, when the two bending side plates 3 expand toward both sides, they will only move along a straight line, avoiding position deviation.

[0052] Secondly, after the two bending side plates 3 expand outward and automatically clamp and complete the marking, the conveying component will continue to move to transport the marked pipe out of the clamping component. At this time, before the next pipe enters between the two bending side plates 3, they will quickly reset through the push rod one 9 and the return spring one 10, so that a small gap is maintained between the two bending side plates 3, which is convenient for squeezing the next pipe to complete the clamping. And through the limit sleeve one 11, the two bending side plates 3 can maintain a certain gap in the natural state, avoiding that the entered pipe cannot squeeze the two bending side plates 3 to expand.

[0053] Then, when the marked pipe 2 is transported through the transport component, when the marked pipe 2 enters the clamping component, the marked pipe 2 will squeeze the extrusion push block 12 upward. The extrusion push block 12 will drive the inner slider two 13 to slide upward inside the opening fixing seat 14, and the laser marker 18 will move upward following the inner slider two 13. Moreover, the larger the diameter of the marked pipe 2, the farther the extrusion push block 12 will be squeezed, the farther the inner slider two 13 will move upward, and the farther the laser marker 18 will move upward. The height of the laser marker 18 will be changed according to the diameter of the marked pipe 2, so that for each marked pipe 2, the position distance between the laser marker 18 and it is equal.

[0054] When the inner slider two 13 moves upward, it will drive the laser marking machine 18 to move upward through the internal thread block 17. After the height position of the laser marking machine 18 is adjusted, the motor 15 is started, and its output shaft will drive the threaded rod 16 to rotate. When the threaded rod 16 rotates, it will drive the internal thread block 17 to move, and the internal thread block 17 will drive the laser marking machine 18 to move horizontally, achieving the effect of being able to mark any position on the upper surface of the marked pipe 2. Through the sliding connection between the connecting blocks 19 arranged on both sides of the internal thread block 17 and the internal chute seat 20, when the threaded rod 16 rotates, the internal thread block 17 will move. And the two internal chute seats 20 are fixedly connected to the inner slider two 13 through the L-shaped connecting rod 22, so that when the inner slider two 13 drives the internal thread block 17 to move, the two internal chute seats 20 will also move, and a certain height can always be maintained between the internal thread block 17 and the internal chute seat 20.

[0055] Finally, when the marking of the marked pipe 2 is completed, the transportation component will transport the marked pipe 2 out. At this time, the bottom of the extrusion push block 12 will not be extruded by the marked pipe 2. Through the push rod two 24 and the return spring two 25, the inner slider two 13 and the extrusion push block 12 are lowered and reset, and the laser marking machine 18 will also return to the initial state, facilitating the upward extrusion of the extrusion push block 12 again before marking the next marked pipe 2, thereby automatically adjusting the height position of the laser marking machine 18. Repeating this process, the height position of the laser marking machine 18 can be automatically adjusted according to the diameter of each pipe before marking.

[0056] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments: the above embodiments and descriptions in the specification only illustrate the principles of the present invention: without departing from the spirit and scope of the present invention: the present invention will have various changes and improvements: these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A PVC pipe laser marking machine, comprising a workbench (1), characterized in that: Above the workbench (1), there is a marked pipe (2). At the bottom of the marked pipe (2), there is a transportation component which can transport the marked pipe (2) to the marking position. On the outer side of the marked pipe (2), there is a clamping component which can automatically clamp according to the diameter of the marked pipe (2). Above the marked pipe (2), there is a laser marking instrument (18). On one side of the laser marking instrument (18), there is an adjusting component which can automatically adjust the height according to the diameter of the marked pipe (2) to ensure that the distance between the laser marking instrument (18) and each marked pipe (2) is the same; The clamping component includes two bent side plates (3). On one side of each of the two bent side plates (3), there are symmetrically and fixedly connected connecting platforms (4). At the bottom of multiple connecting platforms (4), there are fixedly connected inner sliders one (5). At the top of the workbench (1), there are fixedly installed bottom fixing seats (6). The inner walls of every two inner sliders one (5) are slidably connected with the inner walls of the bottom fixing seats (6); On one side of each of the two bent side plates (3), there are symmetrically and fixedly connected push rods one (9). At the top of the workbench (1), there is a fixedly installed fixing frame (8). At the top of the fixing frame (8), there is a vertically connected plate (7). The outer walls of every two push rods one (9) are respectively inserted into the inner walls of the two vertically connected plates (7). On the outside of each push rod one (9), there is a return spring one (10). The two ends of the return spring one (10) are respectively fixedly connected with one side of the bent side plate (3) and one side of the vertically connected plate (7). At one end of each push rod one (9), there is a fixedly connected limit sleeve one (11); The adjusting component includes an extrusion push block (12). Above the extrusion push block (12), there is a fixedly connected inner slider two (13). At the top of the vertically connected plate (7), there is a fixedly connected open fixing seat (14). The inner wall of the open fixing seat (14) is slidably connected with the outer wall of the inner slider two (13). The laser marking instrument (18) is located on one side of the inner slider two (13); On one side of the inner slider two (13), there is a fixedly connected motor (15). The output shaft of the motor (15) is fixedly connected with a threaded rod (16). The outer wall of the threaded rod (16) is threadedly connected with an internally threaded block (17). The bottom of the internally threaded block (17) is fixedly connected with the top of the laser marking instrument (18); When the to-be-marked pipe (2) is transported through the transportation component, when the to-be-marked pipe (2) enters the clamping component, the to-be-marked pipe (2) will upwardly extrude the extrusion push block (12). The extrusion push block (12) drives the inner slider two (13) to slide upward inside the open fixed seat (14), and the laser marking machine (18) will move upward following the inner slider two (13). The larger the diameter of the to-be-marked pipe (2), the farther the extrusion push block (12) will be extruded, the farther the inner slider two (13) will move upward, and the farther the laser marking machine (18) will move upward; by the diameter size of the to-be-marked pipe (2), the height of the laser marking machine (18) is changed, and the position distances between the laser marking machine (18) and the pipe (2) are all equal.

2. The laser marking machine for PVC pipes according to claim 1, wherein: Both side surfaces of the open fixed seat (14) are provided with chutes (23). Both sides of the inner slider two (13) are fixedly connected with L-shaped connecting rods (22). The L-shaped connecting rods (22) are slidably connected with the chutes (23) and are mutually adapted. One ends of both L-shaped connecting rods (22) are fixedly connected with inner chute seats (20). Both sides of the inner thread block (17) are fixedly connected with connecting blocks (19). The two connecting blocks (19) are respectively slidably connected with the inner walls of the two inner chute seats (20) and are mutually adapted. A connecting plate (21) is fixedly connected between one sides of the two inner chute seats (20). One end of the threaded rod (16) is rotatably connected with the inner wall of the connecting plate (21).

3. A PVC pipe laser marking machine according to claim 2, characterized in that: One side of each of the two inner chute seats (20) is fixedly connected with a side rod (29). Outer walls of the two side rods (29) are fixedly connected with inner sliders three (30). Tops of the two vertical plates (7) are fixedly connected with chute seats (31). Inner walls of the two chute seats (31) are slidably connected with outer walls of the inner sliders three (30) and are mutually adapted. An inner wall of the extrusion push block (12) is fixedly connected with a connecting rod (27). A connecting member (28) is fixedly connected between the connecting rod (27) and the side rod (29).

4. A PVC pipe laser marking machine according to claim 1, characterized in that: The top of the inner slider two (13) is fixedly connected with a push rod two (24). An outer portion of the push rod two (24) is provided with a return spring two (25). Two ends of the return spring two (25) are respectively fixedly connected with the top of the inner slider two (13) and the inner side of the top of the open fixed seat (14). The top of the push rod two (24) is fixedly connected with a limit sleeve two (26). The return spring two (25) passes through the inside of the open fixed seat (14).

5. A PVC pipe laser marking machine according to claim 1, characterized in that: The transportation component includes a plurality of transmission cylinders (32), a transmission belt (33) is drivingly connected between the outer walls of the plurality of transmission cylinders (32), both ends of each transmission cylinder (32) are rotatably connected with a connecting sleeve rod (34), and the connecting sleeve rods (34) are fixedly connected to each other. Two clamping platforms (35) are fixedly connected to the top of the workbench (1), and the two clamping platforms (35) are respectively rotatably connected to one end of the two transmission cylinders (32). One end of one of the transmission cylinders (32) is fixedly connected with a stepping motor (36), and the stepping motor (36) is fixedly installed on the top of the workbench (1).

6. The laser marking machine for PVC pipes according to claim 5, wherein: A plurality of placement platforms (37) are fixedly connected to the outer wall of the transmission belt (33), and a propulsion seat (38) is fixedly connected to one side of each placement platform (37), and the propulsion seat (38) is fixedly installed on the outer wall of the transmission belt (33).

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