A laser coding machine for gas pipeline printing

Abstract

The present invention discloses a laser coding machine for gas pipeline printing, comprising a mobile base, a lifting block movably arranged on the mobile base, a laser coding assembly arranged on the lifting block; the laser coding machine for gas pipeline printing also comprises a temperature measuring alarm mechanism and a positioning mechanism; the temperature measuring alarm mechanism comprises a roller, a heat absorbing cotton ring is arranged around the roller, a plurality of separating films are connected circumferentially on the roller, and a heat preservation cover is arranged on the roller. The present invention can laser code the outer wall of a gas pipeline for horizontal transmission, and after each coding, due to laser burning, there is high heat at the coding position of the pipeline, and the heat at the coding position of the pipeline can be collected by relying on the set heat absorbing cotton ring, and the heat is pressed into the set pressure box by extrusion to detect the temperature, and the temperature of the uncoded pipeline position is also detected at the same time, and the two are compared. If the temperature does not change significantly, it means that the coding is not effective, so as to perform alarm feedback.

Description

Technical Field

[0001] The invention relates to the technical field of gas pipeline production printing, and in particular to a laser coding machine for gas pipeline printing. Background Art

[0002] When the gas pipeline is produced, it needs to be coded and marked. Generally, it will be coded in sections by a laser coding machine before the pipeline is cut. The laser coding machine mainly relies on emitting laser to burn and engrave the corresponding digital logo on the surface of the pipeline;

[0003] The Chinese patent authorization announcement number is CN214868055U, and the name is a pipeline laser coding machine, including a positioning frame, a conveyor belt, a moving platform is arranged inside the positioning frame, a coding device is installed on the upper end of the moving platform, a control panel is fixedly installed at one end of the positioning frame, and support feet are fixedly connected to the four corners of the lower end of the conveyor belt. A limiting mechanism is arranged at the upper end of the positioning frame, and the limiting mechanism includes two sets of driving parts fixedly arranged at the upper end of the positioning frame, a driving motor is arranged at the rear end of one set of driving parts, and a limiting part is installed at the lower end of the driving part. The utility model provides a pipeline laser coding machine, which can realize the pipeline without manual support when coding through the limiting mechanism;

[0004] The disadvantage of this prior art solution is that although the prior art solution does not require manual support during coding, it is impossible to determine whether the feedback laser is effectively hitting the outer wall of the pipe during the laser coding process. If the position of the pipe itself is offset during the coding process or the laser device itself fails to emit the laser effectively, the laser coding cannot be effectively implemented. In this case, the coding position of the pipe can only be checked manually one by one, which is labor-intensive, inefficient, and easy to miss. Summary of the invention

[0005] In order to overcome the above technical problems, the object of the present invention is to provide a laser coding machine for printing on gas pipelines.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A laser coding machine for gas pipeline printing, comprising a mobile base, a control system panel is arranged on the mobile base, a lifting block is movably arranged on the mobile base, and a laser coding assembly is arranged on the lifting block; the laser coding machine for gas pipeline printing also includes:

[0008] A temperature measuring alarm mechanism, the temperature measuring alarm mechanism is arranged on one side of the laser coding component; the temperature measuring alarm mechanism comprises a roller, a heat absorbing cotton ring is arranged around the roller, a plurality of separating films are connected circumferentially to the roller, a heat insulation cover is arranged on the roller, and an extrusion temperature measuring component is arranged inside the heat insulation cover;

[0009] A positioning mechanism is arranged between the lifting block and the laser coding assembly, and the positioning mechanism includes a lower positioning plate and an upper positioning plate, the lower positioning plate is connected to one side of the lifting block, and the upper positioning plate is arranged parallel to and above the lower positioning plate.

[0010] As a further solution of the present invention: the extrusion temperature measurement component includes an electric telescopic push rod, which is vertically connected to the inner top of the heat preservation cover, and is electrically connected to the laser coding component circuit. The telescopic end of the electric telescopic push rod is connected to a pressure box, and a breathable mesh plate is provided at the bottom of the pressure box. A temperature sensor is provided at the inner top of the pressure box. A temperature detector flush with the roller is provided on the laser coding component. A temperature comparison module is also provided in the system of the control system panel, and the temperature detector and the temperature sensor are both electrically connected to the temperature comparison module. A pressure-starting switch electrically connected to the temperature comparison module is connected to one side of the bottom of the pressure box; an alarm electrically connected to the temperature comparison module is provided on the laser coding component.

[0011] As a further solution of the present invention: the outside of the heat preservation cover is connected to a piston cylinder, the inside of the piston cylinder is cooperated with a piston block, the piston block is connected to a pressure box, the bottom of the piston cylinder is provided with an air outlet pipe head and an air intake pipe head, both the air outlet pipe head and the air intake pipe head are provided with a one-way air valve, and a corrugated telescopic tube is connected between the air intake pipe head and the pressure box.

[0012] As a further solution of the present invention: a limited telescopic assembly is arranged between the roller and the laser coding assembly, the limited telescopic assembly includes a telescopic connecting rod, the telescopic connecting rod is connected to one side of the laser coding assembly, the roller is rotatably arranged on the telescopic end of the telescopic connecting rod, one side of the telescopic end of the telescopic connecting rod is connected to a limit switch electrically connected to the second electric telescopic rod, the heat preservation cover is connected to the telescopic end of the telescopic connecting rod, and the temperature detector is connected to the telescopic end of the telescopic connecting rod.

[0013] As a further solution of the present invention: a first electric telescopic rod is vertically connected to the lifting block, the telescopic end of the first electric telescopic rod is connected to the upper positioning plate, the lower positioning plate is provided with a first pressure sensing switch electrically connected to the first electric telescopic rod, the upper positioning plate is connected with a first electric guide rail electrically connected to the first pressure sensing switch, and one end of the upper positioning plate is provided with a measuring clamp slidingly connected to the first electric guide rail.

[0014] As a further solution of the present invention: the lifting block is connected to a second electric guide rail, the second electric guide rail is slidably connected to a second electric telescopic rod, the laser coding assembly is arranged at the telescopic end of the second electric telescopic rod, and the measuring splint is provided with a second pressure sensing switch electrically connected to the second electric guide rail.

[0015] As a further solution of the present invention: a laser rangefinder is connected to the measuring clamp plate, and a distance measuring baffle aligned with the laser rangefinder is connected to the end of the upper positioning plate away from the measuring clamp plate.

[0016] As a further solution of the present invention: the system of the control system panel is equipped with a displacement control calculation module electrically connected to the laser rangefinder, the laser coding component is provided with a displacement sensor electrically connected to the displacement control module, the displacement control calculation module is electrically connected to the second electric guide rail, and the displacement control calculation module is also electrically connected to the second electric telescopic rod.

[0017] As a further solution of the present invention: the upper positioning plate is a hollow plate body, a plurality of suction holes are evenly opened on the bottom of the upper positioning plate, a cleaning brush is also connected to the bottom of the upper positioning plate, a vacuum cleaner is connected to one end of the upper positioning plate, and the suction end of the vacuum cleaner is connected to the inside of the upper positioning plate.

[0018] Beneficial effects of the present invention:

[0019] 1. The present invention can laser code the outer wall of the gas pipeline for horizontal transmission, and after each coding, due to laser burning, there is high heat at the coding position of the pipeline, and the heat of the pipeline coding position can be collected by the provided heat-absorbing cotton ring, and the heat is pressed into the provided pressure box by extrusion to detect the temperature. At the same time, the temperature of the uncoded pipeline position is also detected. By comparing the two, if the temperature does not change significantly, it means that the coding is not effective, so as to provide alarm feedback;

[0020] 2. The present invention relies on the upper positioning plate and the lower positioning plate to clamp the position of the transversely transported pipeline, and relies on the measuring clamp to measure the pipe diameter, and then feeds back the measurement data to the system, so that the system controls the laser coding component to adjust and move to the top of the pipeline, so as to code the top of the pipeline;

[0021] 3. After the upper positioning plate of the present invention is in contact with the pipeline, it can clean the outer wall of the top of the pipeline, that is, the coding position, during the pipeline transportation and movement, and rely on the provided vacuum cleaner for cleaning to avoid the presence of attachments that affect the laser coding. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the top view of the structure of the upper positioning plate, the lower positioning plate and the laser coding assembly in the present invention;

[0025] Figure 3 It is a structural schematic diagram of the upper positioning plate in the present invention;

[0026] Figure 4 It is a right view structural diagram of the laser coding component and the temperature measuring alarm mechanism in the present invention;

[0027] Figure 5 yes Figure 4 Schematic diagram of the enlarged structure at point A in the middle.

[0028] In the figure: 1. Mobile base; 2. Control system panel; 3. Electric lifting rail; 4. Lifting block; 5. Second electric rail; 6. Second electric telescopic rod; 7. Laser coding assembly; 8. Alarm; 9. Displacement sensor; 10. Lower positioning plate; 11. First electric telescopic rod; 12. First pressure sensing switch; 13. Measuring clamp; 14. Second pressure sensing switch; 15. Upper positioning plate; 16. Distance measuring baffle; 17. Laser rangefinder; 18. Vacuum cleaner; 19. Temperature detector; 20. Measuring Temperature alarm mechanism; 21. Cleaning brush; 22. Suction hole; 23. Camera; 24. Telescopic connecting rod; 25. Heat-absorbing cotton ring; 26. Roller; 27. Electric telescopic top rod; 28. Insulation cover; 29. ​​Press box; 30. Temperature sensor; 31. Pressure start switch; 32. Breathable mesh plate; 33. Corrugated telescopic tube; 34. Piston cylinder; 35. Exhaust pipe head; 36. Intake pipe head; 37. One-way air valve; 38. Piston block; 39. Limit switch; 40. First electric guide rail; 41. Separation film. DETAILED DESCRIPTION

[0029] 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.

[0030] like Figure 1-Figure 5As shown, a laser coding machine for gas pipeline printing includes a mobile base 1, a control system panel 2 is arranged on the mobile base 1, the control system panel 2 is equipped with a related laser coding control system, and a lifting block 4 is movably arranged on the mobile base 1, specifically: the mobile base 1 is vertically fixedly connected with an electric lifting guide rail 3, the lifting block 4 is slidably connected to the electric lifting guide rail 3, the lifting block 4 moves up and down along the electric lifting guide rail 3, and a laser coding component 7 is arranged on the lifting block 4. The laser coding component 7 is controlled by the related laser coding system to emit laser to code on the outer wall of the pipeline; the lifting block 4 and the laser A positioning mechanism is provided between the coding components 7, and the positioning mechanism includes a lower positioning plate 10 and an upper positioning plate 15. The lower positioning plate 10 is horizontally fixedly connected to one side of the lifting block 4, and the upper positioning plate 15 is arranged parallel to the lower positioning plate 10. A first electric telescopic rod 11 is vertically fixedly connected to the lifting block 4, and the telescopic end of the first electric telescopic rod 11 is fixedly connected to the upper positioning plate 15. A first pressure sensing switch 12 electrically connected to the contraction control circuit of the first electric telescopic rod 11 is installed on the upper surface of the lower positioning plate 10, and a pressure sensing switch 12 electrically connected to the first pressure sensing switch 12 is horizontally fixedly connected at the front edge of the upper positioning plate 15. The first electric guide rail 40, the lower side of one end of the upper positioning plate 15 is provided with a measuring clamping plate 13 which is slidably connected to the first electric guide rail 40, and a laser rangefinder 17 is fixedly connected to the measuring clamping plate 13, and the end of the upper positioning plate 15 away from the measuring clamping plate 13 is fixedly connected to a ranging baffle 16 which is aligned with the laser rangefinder 17, and one end of the lifting block 4 is aligned with the ranging baffle 16. When the measuring clamping plate 13 slides along the first electric guide rail 40 in the direction close to the ranging baffle 16, the laser rangefinder 17 emits a ranging laser to the ranging baffle 16 to measure the distance, and the lifting block 4 is horizontally fixedly connected to the second electric guide rail 40. Rail 5, a second electric telescopic rod 6 is slidably connected to the second electric guide rail 5, a laser coding assembly 7 is installed at the telescopic end of the second electric telescopic rod 6, a second pressure sensing switch 14 electrically connected to the second electric guide rail 5 is installed on the measuring clamp plate 13, a displacement control calculation module electrically connected to the laser rangefinder 17 is provided in the system of the control system panel 2, a displacement sensor 9 electrically connected to the displacement control module is installed on the laser coding assembly 7, the displacement control calculation module is electrically connected to the stop control circuit of the second electric guide rail 5, and the displacement control calculation module is also electrically connected to the contraction control circuit of the second electric telescopic rod 6;

[0031] During the horizontal transmission of the processed and produced burning pipeline between the equipment, the coding machine relies on the mobile base 1 to move to the corresponding position, so that one end of the lifting block 4 is in contact with the side wall of the pipeline, and the upper positioning plate 15 and the lower positioning plate 10 are respectively located on the upper and lower sides of the horizontal transmission pipeline, and then the electric lifting guide rail 3 is started, and the electric lifting guide rail 3 drives the lower positioning plate 10 and the upper positioning plate 15 to rise at the same time, and the raised lower positioning plate 10 is in contact with the bottom of the pipeline. At this time, the first pressure sensing switch 12 generates induction, causing the first electric telescopic rod 11 to contract, so that the first electric telescopic rod 11 drives the upper positioning plate 15 to descend, and the upper positioning plate 15 descends and contacts the upper side of the pipeline. At the same time, the first pressure sensing switch 12 causes the first electric guide rail 40 to drive the measuring clamp 13 to move horizontally, and the measuring clamp 13 moves horizontally to contact the pipeline, and the measuring clamp 13 is measured. During the movement of the clamping plate 13, the laser rangefinder 17 detects the distance between it and the distance measuring baffle 16. When the measuring clamping plate 13 contacts the pipeline, the second pressure sensing switch 14 generates induction, so that the second electric guide rail 5 runs, driving the laser coding component 7 to move horizontally. During the horizontal movement of the laser coding component 7, the displacement sensor 9 outputs a displacement signal, and the displacement control calculation module in the control system panel 2 collects the distance measured by the laser rangefinder 17 when the measuring clamping plate 13 stops, that is, the pipeline diameter, and calculates the radius as a parameter, and collects the data of the displacement sensor 9 in real time. When the displacement value output by the displacement sensor 9 is the pipeline radius value, the second electric guide rail 5 is controlled to stop, and the second electric telescopic rod 6 is contracted, so that the laser coding component 7 stops just above the top of the pipeline, which is convenient for laser coding;

[0032] The upper positioning plate 15 is a hollow plate body, and a plurality of suction holes 22 are evenly opened at the bottom of the upper positioning plate 15. A cleaning brush 21 is also connected to the bottom of the upper positioning plate 15. A vacuum cleaner 18 is fixedly connected to one end of the upper positioning plate 15. The vacuum end of the vacuum cleaner 18 is connected to the inside of the upper positioning plate 15. When the upper positioning plate 15 contacts the pipeline and the pipeline is horizontally transmitted through the position of the upper positioning plate 15, scraping occurs between the top of the pipeline and the cleaning brush 21 on the upper positioning plate 15, so as to clean up the attachments at the top of the pipeline, and the vacuum cleaner 18 generates negative pressure, so that the distributed suction holes 22 suck away the attachments that are cleaned up, thereby preventing the attachments from affecting the laser coding effect at the top of the pipeline;

[0033] The laser emitting end of the laser coding component 7 faces downward, and a temperature measuring alarm mechanism 20 is arranged on one side of the laser coding component 7. The temperature measuring alarm mechanism 20 includes a roller 26. A limited telescopic component is arranged between the roller 26 and the laser coding component 7. The limited telescopic component includes a telescopic connecting rod 24. The telescopic connecting rod 24 is vertically fixedly connected to one side of the laser coding component 7 through a frame. The bottom end of the telescopic connecting rod 24 is the telescopic end. The roller 26 is rotatably arranged on the telescopic end of the telescopic connecting rod 24. A limit switch 39 electrically connected to the second electric telescopic rod 6 is fixedly installed on one side of the telescopic end of the telescopic connecting rod 24. When the laser coding component 7 contracts with the second electric telescopic rod 6, the limit switch 39 electrically connected to the second electric telescopic rod 6 is fixedly installed on one side of the telescopic end of the telescopic connecting rod 24. When the roller 26 is lowered, the telescopic connecting rod 24 is lowered together with it, and when the bottom of the telescopic connecting rod 24 hits the pipe, the telescopic connecting rod 24 begins to shrink. When the shrinkage reaches a certain length, the limit switch 39 realizes the limit, and the second electric telescopic rod 6 stops shrinking. At this time, the distance between the stop position of the laser coding component 7 and the pipe is a distance suitable for coding. A heat-absorbing cotton ring 25 is arranged around the roller 26. The heat-absorbing cotton ring 25 is convenient for absorbing heat. A plurality of separation films 41 are connected to the roller 26 circumferentially. When the heat-absorbing cotton ring 25 between two separation films 41 is partially squeezed, due to the restriction of the separation film 41, the squeezed airflow can only The roller 26 is provided with a heat preservation cover 28, which is fixedly connected to the telescopic end of the telescopic connecting rod 24. An extrusion temperature measuring component is provided inside the heat preservation cover 28. The extrusion temperature measuring component includes an electric telescopic push rod 27, which is vertically fixedly connected to the inner top of the heat preservation cover 28. The electric telescopic push rod 27 is electrically connected to the start control circuit of the laser coding component 7. After the laser coding component 7 starts to emit laser coding, the pipeline coding position moves through the roller 26. Under the condition of uniform pipeline transmission speed, the time length is constant, so the time length after coding can be set, and then the electric telescopic push rod 27 is started. The telescopic end of 7 is fixedly connected with a press box 29, a breathable mesh plate 32 is arranged at the bottom of the press box 29, a temperature sensor 30 is installed at the inner top of the press box 29, and a temperature detector 19 flush with the roller 26 is arranged on the other side of the laser coding component 7. The temperature detector 19 is fixedly connected to the telescopic end of the telescopic connecting rod 24 through a rod body. The temperature detector 19 is used to detect the temperature of the outer wall of the pipeline when it is not laser-coded. The system of the control system panel 2 is also equipped with a temperature comparison module, and the temperature detector 19 and the temperature sensor 30 are both electrically connected to the temperature comparison module. A pressure start switch 31 electrically connected to the temperature comparison module is fixedly connected to one side of the bottom of the press box 29;

[0034] The laser coding component 7 is started intermittently, and laser coding is performed on the transversely transmitted pipeline at intervals. After each coding is completed, the system starts to calculate the duration. At the same time, the laser coding position of the pipeline moves horizontally to contact the heat-absorbing cotton ring 25 outside the roller 26. Since the coding position is burned by the laser, there is heat. When passing through the heat-absorbing cotton ring 25, the heat is transferred to the heat-absorbing cotton ring 25, and as the roller 26 rolls and rotates along the outer wall of the pipeline, when the system calculates that the coding is completed and reaches the set duration, the heat-absorbing cotton ring 25 that absorbs heat just rotates to the top position and is in the heat-insulating cover 28. At this time, the system controls the electric telescopic top rod 27 to retract. When 27 is extended, it drives the pressure box 29 to descend and contact the heat-absorbing cotton ring 25, squeezing out the air in the heat-absorbing cotton ring 25. The squeezed air takes away the heat and enters the pressure box 29, which is convenient for the temperature sensor 30 to detect the temperature. The temperature comparison module collects the temperature data detected by the temperature detector 19 and the temperature data detected by the temperature sensor 30 for comparison and calculation. Since the temperature detector 19 detects the temperature of the outer wall of the pipeline before coding, and the temperature sensor 30 detects the temperature value corresponding to the heat collected by the heat-absorbing cotton ring 25 after coding, if the difference between the two temperature values ​​is greater than the set value, it means that the laser coding component 7 effectively realizes laser coding at the corresponding position of the outer wall of the pipeline;

[0035] The laser coding assembly 7 is equipped with an alarm 8 electrically connected to the temperature comparison module. When it is detected that there is no significant temperature change on the outer wall of the pipeline after coding, the temperature comparison module activates the alarm 8 for the convenience of staff to check;

[0036] The outside of the heat preservation cover 28 is fixedly connected to a piston cylinder 34, and a piston block 38 is arranged inside the piston cylinder 34. The piston block 38 is connected to the pressure box 29 through a rod body. An air outlet pipe head 35 and an air intake pipe head 36 are arranged at the bottom of the piston cylinder 34. Both the air outlet pipe head 35 and the air intake pipe head 36 are equipped with a one-way air valve 37. The one-way air valve 37 on the air outlet pipe head 35 allows the air in the piston cylinder 34 to be discharged only to the outside, and the one-way air valve 37 on the air intake pipe head 36 allows the air to flow only into the piston cylinder 34. A bellows telescopic tube 33 is connected between the air intake pipe head 36 and the pressure box 29, and the bellows telescopic tube 33 connects the internal space of the pressure box 29 and the air intake pipe head 36.

[0037] When the electric telescopic push rod 27 drives the pressure box 29 to descend and squeeze the corresponding heat-absorbing cotton ring 25, the piston block 38 descends synchronously to press the air in the piston cylinder 34 out from the air outlet pipe head 35. When the electric telescopic push rod 27 contracts and drives the pressure box 29 to rise and reset, the piston block 38 rises synchronously, so that the piston cylinder 34 sucks away the hot air from the inside of the pressure box 29 through the suction pipe head 36 and sucks it into the piston cylinder 34. In this way, the air pressed into the pressure box 29 each time can be discharged to avoid affecting the next detection;

[0038] A camera 23 is also provided on one side of the laser coding component 7 close to the roller 26. The camera 23 is fixedly connected to the fixed end of the telescopic connecting rod 24. The camera 23 facilitates the operator to check whether the position after coding is coded.

[0039] The working principle of the present invention is as follows: during the horizontal transmission of the processed and produced burning pipeline between the equipments, the coding machine moves to the corresponding position by means of the mobile base 1, so that one end of the lifting block 4 contacts the side wall of the pipeline, and the upper positioning plate 15 and the lower positioning plate 10 are respectively located at the upper and lower sides of the horizontal transmission pipeline, and then the electric lifting guide rail 3 is started, and the electric lifting guide rail 3 drives the lower positioning plate 10 and the upper positioning plate 15 to rise at the same time, and the raised lower positioning plate 10 contacts the bottom of the pipeline, at this time, the first pressure sensing switch 12 generates induction, so that the first electric telescopic rod 11 contracts, so that the first electric telescopic rod 11 drives the upper positioning plate 15 to descend, and the upper positioning plate 15 descends and contacts the upper side of the pipeline, and at the same time, the first pressure sensing switch 12 causes the first electric guide rail 40 to drive the measuring clamp 13 to move horizontally, and the measuring clamp 13 is measured. The clamping plate 13 moves laterally and contacts the pipeline, and during the movement of the measuring clamping plate 13, the laser rangefinder 17 detects the distance between it and the distance measuring baffle 16. When the measuring clamping plate 13 contacts the pipeline, the second pressure sensing switch 14 generates induction, so that the second electric guide rail 5 runs, driving the laser coding component 7 to move laterally. During the lateral movement of the laser coding component 7, the displacement sensor 9 outputs a displacement signal, and the displacement control calculation module in the control system panel 2 collects the distance measured by the laser rangefinder 17 when the measuring clamping plate 13 stops, that is, the pipeline diameter, and calculates the radius as a parameter, and collects the data of the displacement sensor 9 in real time. When the displacement value output by the displacement sensor 9 is the pipeline radius value, the second electric guide rail 5 is controlled to stop, so that the laser coding component 7 stops just above the top of the pipeline;

[0040] At the same time, the system causes the second electric telescopic rod 6 to retract, so that the laser coding assembly 7 drops with the retraction of the second electric telescopic rod 6, and the telescopic connecting rod 24 drops synchronously therewith, and when the bottom of the telescopic connecting rod 24 contacts the pipe, the telescopic connecting rod 24 begins to retract, and when the retraction reaches a certain length, the limit switch 39 realizes the limit, and the second electric telescopic rod 6 stops retracting, at which time the distance between the stop position of the laser coding assembly 7 and the pipe is a distance suitable for coding;

[0041] The laser coding component 7 is started intermittently, and the laser coding is performed once every certain distance on the transversely transmitted pipe; when the pipe is transversely transmitted through the position of the upper positioning plate 15, scraping occurs between the top of the pipe and the cleaning brush 21 on the upper positioning plate 15, so as to clean up the attachments on the top of the pipe, and the vacuum cleaner 18 generates negative pressure, so that the distributed suction holes 22 suck away the attachments that are cleaned up, thus preventing the attachments from affecting the laser coding effect on the top of the pipe;

[0042] After each coding is completed, the system starts to calculate the duration. At the same time, the laser coding position of the pipeline moves horizontally to contact the heat-absorbing cotton ring 25 outside the roller 26. Since the coding position is burned by the laser, there is heat. When passing through the heat-absorbing cotton ring 25, the heat is transferred to the heat-absorbing cotton ring 25, and as the roller 26 rolls and rotates along the outer wall of the pipeline, when the system calculates that the coding is completed and reaches the set duration, the heat-absorbing cotton ring 25 that absorbs heat just rotates to the top position and is in the heat-insulating cover 28. At this time, the system controls the electric telescopic top rod 27 to retract. When the electric telescopic top rod 27 is extended, it drives the pressure box 29 to descend and contact the heat-absorbing cotton ring 25, squeezing the air in the heat-absorbing cotton ring 25 out, squeezing The air coming out takes away the heat and enters the pressure box 29, which is convenient for the temperature sensor 30 to detect the temperature. The temperature comparison module collects the temperature data detected by the temperature detector 19 and compares and calculates the temperature data detected by the temperature sensor 30. Since the temperature detector 19 detects the temperature of the outer wall of the pipeline before coding, and the temperature sensor 30 detects the temperature value corresponding to the heat collected by the heat-absorbing cotton ring 25 after coding, if the difference between the two temperature values ​​is greater than the set value, it means that the laser coding component 7 effectively realizes laser coding at the corresponding position of the outer wall of the pipeline; when it is detected that there is no significant temperature change on the outer wall of the pipeline after coding, the temperature comparison module activates the alarm 8 for the convenience of staff to check;

[0043] When the electric telescopic push rod 27 drives the pressure box 29 to descend and squeeze the corresponding heat-absorbing cotton ring 25, the piston block 38 descends synchronously to press the air in the piston cylinder 34 out from the air outlet pipe head 35. When the electric telescopic push rod 27 contracts and drives the pressure box 29 to rise and reset, the piston block 38 rises synchronously, so that the piston cylinder 34 sucks away the hot air from the inside of the pressure box 29 through the suction pipe head 36 and sucks it into the piston cylinder 34. In this way, the air pressed into the pressure box 29 each time can be discharged to avoid affecting the next detection.

[0044] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A laser coding machine for gas pipeline printing, comprising a mobile base (1), a control system panel (2) being arranged on the mobile base (1), a lifting block (4) being movably arranged on the mobile base (1), and a laser coding component (7) being arranged on the lifting block (4); characterized in that: Also includes: a temperature measuring alarm mechanism (20), the temperature measuring alarm mechanism (20) being arranged on one side of the laser coding component (7); the temperature measuring alarm mechanism (20) comprising a roller (26), a heat absorbing cotton ring (25) being arranged around the roller (26), a plurality of separating films (41) being connected circumferentially on the roller (26), a heat insulation cover (28) being arranged on the roller (26), and an extrusion temperature measuring component being arranged inside the heat insulation cover (28); a positioning mechanism, the positioning mechanism being arranged between the lifting block (4) and the laser coding assembly (7), the positioning mechanism comprising a lower positioning plate (10) and an upper positioning plate (15), the lower positioning plate (10) being connected to one side of the lifting block (4), and the upper positioning plate (15) being arranged parallel to and above the lower positioning plate (10); The extrusion temperature measurement component comprises an electric telescopic push rod (27), the electric telescopic push rod (27) is vertically connected to the inner top of the heat preservation cover (28), the electric telescopic push rod (27) is electrically connected to the circuit of the laser coding component (7), the telescopic end of the electric telescopic push rod (27) is connected to a pressing box (29), the bottom of the pressing box (29) is provided with a breathable mesh plate (32), the inner top of the pressing box (29) is provided with a temperature sensor (30), the laser coding component (7) is provided with a temperature detector (19) flush with the roller (26), the control system panel (2) is also equipped with a temperature comparison module, the temperature detector (19) and the temperature sensor (30) are both electrically connected to the temperature comparison module, and the bottom side of the pressing box (29) is connected to a pressure start switch (31) electrically connected to the temperature comparison module; the laser coding component (7) is provided with an alarm (8) electrically connected to the temperature comparison module; The outside of the heat-insulating cover (28) is connected to a piston cylinder (34), the inside of the piston cylinder (34) is provided with a piston block (38), the piston block (38) is connected to a pressure box (29), an air outlet pipe head (35) and an air intake pipe head (36) are provided at the bottom of the piston cylinder (34), both the air outlet pipe head (35) and the air intake pipe head (36) are provided with a one-way air valve (37), and a corrugated telescopic pipe (33) is connected between the air intake pipe head (36) and the pressure box (29); A limit telescopic assembly is provided between the roller (26) and the laser coding assembly (7), the limit telescopic assembly comprising a telescopic connecting rod (24), the telescopic connecting rod (24) being connected to one side of the laser coding assembly (7), the roller (26) being rotatably arranged on the telescopic end of the telescopic connecting rod (24), one side of the telescopic end of the telescopic connecting rod (24) being connected to a limit switch (39) electrically connected to the second electric telescopic rod (6), the heat preservation cover (28) being connected to the telescopic end of the telescopic connecting rod (24), and the temperature detector (19) being connected to the telescopic end of the telescopic connecting rod (24); A first electric telescopic rod (11) is vertically connected to the lifting block (4); the telescopic end of the first electric telescopic rod (11) is connected to an upper positioning plate (15); a first pressure sensing switch (12) electrically connected to the first electric telescopic rod (11) is provided on the lower positioning plate (10); a first electric guide rail (40) electrically connected to the first pressure sensing switch (12) is connected to the upper positioning plate (15); and a measuring clamp (13) slidably connected to the first electric guide rail (40) is provided at one end of the upper positioning plate (15).

2. A laser coder for gas pipeline printing according to claim 1, characterized in that: The lifting block (4) is connected to a second electric guide rail (5), the second electric guide rail (5) is slidably connected to a second electric telescopic rod (6), the laser coding assembly (7) is arranged at the telescopic end of the second electric telescopic rod (6), and the measuring clamping plate (13) is provided with a second pressure sensing switch (14) electrically connected to the second electric guide rail (5).

3. A laser marking machine for gas pipeline printing according to claim 2, characterized in that: The measuring clamping plate (13) is connected to a laser rangefinder (17), and one end of the upper positioning plate (15) away from the measuring clamping plate (13) is connected to a distance measuring baffle (16) aligned with the laser rangefinder (17).

4. A laser coder for gas pipeline printing according to claim 3, characterized in that: The control system panel (2) is provided with a displacement control calculation module electrically connected to the laser rangefinder (17); the laser coding assembly (7) is provided with a displacement sensor (9) electrically connected to the displacement control module; the displacement control calculation module is electrically connected to the second electric guide rail (5); and the displacement control calculation module is also electrically connected to the second electric telescopic rod (6).

5. A laser coder for gas pipeline printing according to claim 1, characterized in that: The upper positioning plate (15) is a hollow plate body, a plurality of suction holes (22) are evenly arranged at the bottom of the upper positioning plate (15), a cleaning brush (21) is also connected to the bottom of the upper positioning plate (15), one end of the upper positioning plate (15) is connected to a vacuum cleaner (18), and the vacuum end of the vacuum cleaner (18) is in communication with the interior of the upper positioning plate (15).

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