Mark spraying machine for high-frequency welded pipe

Abstract

The invention relates to a high-frequency welded pipe mark spraying machine which comprises an ink spraying main machine which is connected with a printing ink spraying head through a control wire harness and a printing ink pipeline, and a flexible wire pipe wrapping the control wire harness and the printing ink pipeline is connected between the ink spraying main machine and the printing ink spraying head; the spray head rack comprises a cantilever extending in the horizontal direction and a lifting mechanism for driving the cantilever to move in the vertical direction, and a first guide rail and a first sliding seat are fixedly connected to the cantilever; one end of the second guide rail is connected with the ink nozzle, and the other end of the second guide rail is fixedly provided with a second sliding seat which is in sliding connection with the first guide rail. The control wire harness and the printing ink pipeline which are connected between the ink jet host and the printing ink nozzle are integrated in the flexible wire pipe, so that the problem that the control wire harness and the printing ink pipeline are wound is solved. And the first guide rail and the second guide rail can realize free adjustment of the ink nozzle in the height direction and the horizontal direction, so that the mark spraying efficiency of the high-frequency welded pipe is improved.

Description

Technical Field

[0001] The present application relates to the technical field of steel pipe manufacturing, and in particular to a high-frequency welded pipe marking machine. Background Art

[0002] The inkjet marking machine is a device that uses software control and non-contact methods to mark products. Because it is a jet of ink, it does not need to directly contact the surface of the workpiece and will not damage the surface of the printed object. The inkjet marking machine is the common name for the inkjet printer, also known as the inkjet printer, inkjet printer, etc. In the steel pipe industry, most of them are called inkjet marking machines.

[0003] The steel pipe marking system is a device for spraying and marking finished pipes, and is the finishing part of the steel pipe processing process. At present, most domestic companies use manual template spraying or handheld inkjet printers to achieve steel pipe marking. This method is inefficient, the printing effect is not beautiful, and it is difficult to meet the requirements of mass production. For steel pipes on the assembly line, the steel pipes will fluctuate during the spraying process, which often causes problems such as uneven spraying quality.

[0004] The existing marking equipment cannot adjust the distance from the steel pipe according to the diameter of the steel pipe when in use, resulting in the need for manual measurement and replacement or causing differences in the marking spacing. In addition, the movement trajectory of the ink nozzle is difficult to remain parallel to the cantilever, the force is uneven, and the cantilever becomes unstable, which also makes it impossible to mark it well. Summary of the invention

[0005] The embodiment of the present application provides a high-frequency welded pipe marking machine to solve the problem in the related art that the movement trajectory of the ink nozzle is difficult to keep parallel with the cantilever, the cantilever is subjected to uneven force, and the cantilever becomes unstable.

[0006] The embodiment of the present application provides a high-frequency welded pipe marking machine, comprising:

[0007] An inkjet host, wherein the inkjet host is connected to an ink nozzle through a control harness and an ink pipeline, and a flexible wire tube wrapping the control harness and the ink pipeline is connected between the inkjet host and the ink nozzle;

[0008] A nozzle frame, the nozzle frame comprising a cantilever extending in a horizontal direction, and a lifting mechanism driving the cantilever to move in a vertical direction, the cantilever being fixedly connected to a first guide rail and a first slide seat;

[0009] A second guide rail is slidably connected to the first slide seat, one end of the second guide rail is connected to the ink nozzle, and the other end of the second guide rail is fixed with a second slide seat slidably connected to the first guide rail.

[0010] In some embodiments: the first guide rail and the second guide rail are arranged in parallel with each other at an interval and extend along the length direction of the cantilever, and the cross-sections of the first guide rail and the second guide rail are both non-circular cross-sections;

[0011] The first slide seat comprises a first mounting plate fixed on the cantilever, and a first guide seat fixed on the first mounting plate, wherein the first guide seat is provided with a guide hole penetrating into the second guide rail;

[0012] The second slide seat includes a second mounting plate fixed on the second guide rail, and a second guide seat fixed on the second mounting plate. The second guide seat is provided with a guide hole penetrating into the first guide rail.

[0013] In some embodiments: a hanging plate for hanging and clamping the ink nozzle is provided at one end of the second guide rail, and a nozzle base with an "L"-shaped structure is fixedly connected to the ink nozzle, and the nozzle base is connected to the hanging plate by a buckle, and the ink spraying direction of the ink nozzle is in the same direction as the length direction of the second guide rail.

[0014] In some embodiments: the lifting mechanism includes a support base, a vertically arranged screw rod is rotatably connected to the top of the support base, a top plate is rotatably connected to the top of the screw rod, and guide columns fixed between the support base and the top plate are symmetrically arranged on both sides of the screw rod;

[0015] A lifting connecting plate is threadedly connected to the screw rod, the lifting connecting plate is slidably connected to the guide column, the lifting connecting plate is fixedly connected to the cantilever, and the lifting connecting plate drives the cantilever to move up and down.

[0016] In some embodiments: a screw nut threadedly connected to the screw is fixedly connected to the lifting connecting plate, or a threaded hole threadedly connected to the screw is opened on the lifting connecting plate, and a guide hole penetrating the guide column is opened on the lifting connecting plate, and a linear bearing slidably connected to the guide column is provided in the guide hole.

[0017] In some embodiments: a handwheel for driving the screw to rotate is provided on the top of the screw, or a servo motor for driving the screw to rotate is connected to the top plate, and the servo motor and the screw are connected via a worm gear transmission.

[0018] In some embodiments: a thrust ball bearing rotatably connected to the screw is provided on the top of the support base, a cylindrical roller bearing rotatably connected to the screw is fixedly connected to the top plate, and the thrust ball bearing and the cylindrical roller bearing are sleeved on the outer periphery of the screw and are coaxially arranged with each other.

[0019] In some embodiments: the support base includes a vertically arranged support column, a bottom plate fixed to the bottom of the support column, and an end plate fixed to the top of the support column. The bottom plate is provided with mounting holes for inserting fasteners, and the end plate is provided with threaded holes for threadedly connecting the guide column.

[0020] In some embodiments: the inkjet host is located on one side of the nozzle frame, and the inkjet host includes an ink preparation box, a main control box and an operation box which are fixedly connected in sequence from bottom to top, and a touch panel and control buttons are installed on the operation box.

[0021] In some embodiments: one end of the second guide rail is provided with an angle adjustment mechanism rotatably connected to the ink nozzle, and the angle adjustment mechanism is used to adjust the pitch angle of the ink nozzle;

[0022] The cantilever is provided with a linear drive mechanism for driving the ink nozzle to slide along the length direction of the second guide rail. The ink nozzle is provided with a distance sensor, and the distance sensor is electrically connected to the linear drive mechanism.

[0023] The beneficial effects of the technical solution provided by this application include:

[0024] The embodiment of the present application provides a high-frequency welded pipe marking machine. Since the high-frequency welded pipe marking machine of the present application is provided with an inkjet mainframe, the inkjet mainframe is connected to an ink nozzle through a control harness and an ink pipeline, and a flexible wire tube wrapping the control harness and the ink pipeline is connected between the inkjet mainframe and the ink nozzle; a nozzle frame, the nozzle frame includes a cantilever extending in a horizontal direction, and a lifting mechanism for driving the cantilever to move in a vertical direction, and a first guide rail and a first slide seat are fixedly connected to the cantilever; a second guide rail is slidably connected to the first slide seat, one end of the second guide rail is connected to the ink nozzle, and the other end of the second guide rail is fixed with a second slide seat slidably connected to the first guide rail.

[0025] Therefore, the high-frequency welded pipe marking machine of the present application has a flexible wire tube that wraps the control harness and ink pipeline between the inkjet host and the ink nozzle, and the control harness and ink pipeline connecting the inkjet host and the ink nozzle are integrated in the flexible wire tube, and the flexible wire tube is used to connect to the ink nozzle, which solves the problem of entanglement of the control harness and ink pipeline. The installation is simple and efficient, and the problem of ink clogging is not easy to occur. In order to adapt to the welding pipe marking operation of different specifications and models, the lifting mechanism and the first guide rail and the second guide rail on the cantilever can realize the free adjustment of the ink nozzle in the height direction and the free adjustment in the horizontal direction, reducing the labor intensity of workers and improving the marking efficiency of high-frequency welded pipes.

[0026] In addition, a first guide rail and a first slide are fixedly connected to the cantilever, a second guide rail is slidably connected to the first slide, one end of the second guide rail is connected to the ink nozzle, and the other end of the second guide rail is fixed with a second slide slidably connected to the first guide rail. The first guide rail and the second guide rail form a double guide rail structure, forming a stable quadrilateral structure to enhance the structural strength of the cantilever, and ensure that the motion trajectory of the ink nozzle is parallel to the cantilever, the force is evenly applied, and the cantilever does not become unstable, thereby enabling the ink nozzle to have a good spraying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0029] Figure 2 This is a schematic diagram of the structure of the cantilever and ink jet nozzle of an embodiment of the present application;

[0030] Figure 3 This is a schematic diagram of the structure of the lifting mechanism of an embodiment of the present application;

[0031] Figure 4 This is a schematic diagram of the structure of the inkjet host according to an embodiment of the present application.

[0032] Reference numerals:

[0033] 10. Inkjet host; 11. Ink nozzle; 12. Flexible wire tube; 13. Ink batching box; 14. Main control box; 15. Operation box; 16. Touch panel; 17. Control button; 20. Nozzle rack; 21. Lifting mechanism; 22. Cantilever;

[0034] 211, support base; 212, screw rod; 213, top plate; 214, guide column; 215, lifting connecting plate; 216, thrust ball bearing; 217, cylindrical roller bearing; 218, hand wheel; 219, bottom plate;

[0035] 221, first guide rail; 222, first slide seat; 223, second guide rail; 224, second slide seat; 225, hanging plate; 226, nozzle base. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0037] The embodiment of the present application provides a high-frequency welded pipe marking machine, which can solve the problem in the related art that the movement trajectory of the ink nozzle is difficult to keep parallel with the cantilever, the cantilever is subjected to uneven force, and the cantilever becomes unstable.

[0038] See also Figure 1 and Figure 2 As shown, the embodiment of the present application provides a high-frequency welded pipe marking machine, comprising:

[0039] The inkjet host 10 is connected to an ink nozzle 11 through a control harness and an ink pipeline, and a flexible wire tube 12 that wraps the control harness and the ink pipeline is connected between the inkjet host 10 and the ink nozzle 11. The control harness and the ink pipeline connecting the inkjet host 10 and the ink nozzle 11 are integrated in the flexible wire tube 12, and the flexible wire tube 12 is used to softly connect to the ink nozzle 11, thereby solving the problem of entanglement of the control harness and the ink pipeline.

[0040] The nozzle frame 20 includes a cantilever 22 extending in a horizontal direction, and a lifting mechanism 21 driving the cantilever 22 to move in a vertical direction. A first guide rail 221 and a first slide seat 222 are fixedly connected to the cantilever 22. The lifting mechanism 21 drives the cantilever 22 to move vertically up and down, thereby adjusting the inkjet height of the ink nozzle 11, and thus can spray ink on high-frequency welded pipes of different diameters. The first guide rail 221 on the cantilever 22 can adjust the horizontal distance between the ink nozzle 11 and the high-frequency welded pipe, thereby adjusting the inkjet distance of the ink nozzle 11.

[0041] The first slide 222 is slidably connected with a second guide rail 223, one end of the second guide rail 223 is connected with the ink nozzle 11, and the other end of the second guide rail 223 is fixed with a second slide 224 slidably connected with the first guide rail 221. The first guide rail 221 and the second guide rail 223 form a double guide rail structure, forming a stable quadrilateral structure to enhance the structural strength of the cantilever 22, and ensure that the motion trajectory of the ink nozzle 11 and the cantilever 22 remain parallel, the cantilever 22 is evenly stressed, and the cantilever does not become unstable, thereby enabling the ink nozzle 11 to have a good spraying effect.

[0042] The high-frequency welded pipe marking machine of the embodiment of the present application has a flexible wire tube 12 that wraps the control harness and ink pipeline between the inkjet host 10 and the ink nozzle 11. The control harness and ink pipeline connecting the inkjet host 10 and the ink nozzle 11 are integrated in the flexible wire tube 12, and the flexible wire tube 12 is used to softly connect to the ink nozzle 11, which solves the problem of entanglement of the control harness and ink pipeline. The installation is simple and efficient, and the problem of ink clogging is not easy to occur. In order to adapt to the welding pipe marking operation of different specifications and models, the first guide rail 221 and the second guide rail 223 on the lifting mechanism 21 and the cantilever 22 can realize the free adjustment of the ink nozzle 11 in the height direction and the free adjustment in the horizontal direction, reducing the labor intensity of workers and improving the marking efficiency of high-frequency welded pipes.

[0043] In addition, the cantilever 22 is fixedly connected with a first guide rail 221 and a first slide 222, and the first slide 222 is slidably connected with a second guide rail 223, one end of the second guide rail 223 is connected to the ink nozzle 11, and the other end of the second guide rail 223 is fixed with a second slide 224 slidably connected to the first guide rail 221. The first guide rail 221 and the second guide rail 223 form a double guide rail structure, forming a stable quadrilateral structure to enhance the structural strength of the cantilever 22, and ensure that the movement trajectory of the ink nozzle 11 is parallel to the cantilever 22, the force is evenly applied, and the cantilever 22 does not become unstable, so that the ink nozzle 11 has a good spraying effect.

[0044] In some alternative embodiments: See Figure 2 As shown, an embodiment of the present application provides a high-frequency welded pipe marking machine, in which the first guide rail 221 and the second guide rail 223 are arranged in parallel with each other at an upper and lower interval and extend along the length direction of the cantilever 22. The cross-sections of the first guide rail 221 and the second guide rail 223 are both non-circular cross-sections, thereby providing circumferential positioning for the ink nozzle 11, and the second guide rail 223 moves along the length direction of the first guide rail 221.

[0045] The first slide 222 includes a first mounting plate fixed on the cantilever 22, and a first guide seat fixed on the first mounting plate, and a guide hole is formed on the first guide seat to penetrate the second guide rail 223. The second slide 224 includes a second mounting plate fixed on the second guide rail 223, and a second guide seat fixed on the second mounting plate, and a guide hole is formed on the second guide seat to penetrate the first guide rail 221.

[0046] One end of the second guide rail 223 is provided with a hanging plate 225 for hanging and clamping the ink nozzle 11, and an "L"-shaped nozzle base 226 is fixedly connected to the ink nozzle 11. The nozzle base 226 is snap-connected with the hanging plate 225, which is convenient for installing and removing the ink nozzle 11. The ink jetting direction of the ink nozzle 11 is in the same direction as the length direction of the second guide rail 223.

[0047] In some alternative embodiments: See Figure 3 As shown, an embodiment of the present application provides a high-frequency welded pipe marking machine, the lifting mechanism 21 of the high-frequency welded pipe marking machine includes a support base 211, a vertically arranged screw rod 212 is rotatably connected to the top of the support base 211, a top plate 213 is rotatably connected to the top of the screw rod 212, and guide columns 214 fixed between the support base 211 and the top plate 213 are symmetrically arranged on both sides of the screw rod 212.

[0048] The screw rod 212 is threadedly connected with a lifting connecting plate 215, which is slidably connected to the guide column 214, and the lifting connecting plate 215 is fixedly connected to the cantilever 22, and the lifting connecting plate 215 drives the cantilever 22 to move up and down. A hand wheel 218 for driving the screw rod 212 to rotate is provided on the top of the screw rod 212, or a servo motor (not shown in the figure) for driving the screw rod 212 to rotate is connected to the top plate 213, and the servo motor and the screw rod 212 are connected by a worm gear (not shown in the figure). The hand wheel 218 or the servo motor drives the screw rod 212 to rotate forward and backward, and converts the rotational motion of the screw rod 212 into the up and down lifting motion of the lifting connecting plate 215.

[0049] In some alternative embodiments: See Figure 3 As shown, the embodiment of the present application provides a high-frequency welded pipe marking machine, and a screw nut (not shown in the figure) that is threadedly connected to the screw is fixedly connected to the lifting connecting plate 215 of the high-frequency welded pipe marking machine, or a threaded hole that is threadedly connected to the screw is provided on the lifting connecting plate 215. A guide hole that penetrates the guide column 214 is provided on the lifting connecting plate 215, and a linear bearing (not shown in the figure) that is slidably connected to the guide column 214 is provided in the guide hole.

[0050] A thrust ball bearing 216 rotatably connected to the screw rod 212 is provided on the top of the support base 211, and a cylindrical roller bearing 217 rotatably connected to the screw rod 212 is fixedly connected to the top plate 213. The thrust ball bearing 216 and the cylindrical roller bearing 217 are sleeved on the outer periphery of the screw rod 212 and are coaxially arranged with each other. The thrust ball bearing 216 and the cylindrical roller bearing 217 provide radial positioning for the screw rod 212, and at the same time coaxially rotate with the screw rod 212 to ensure the stability of the rotary motion of the screw rod 212.

[0051] The support base 211 includes a vertically arranged support column, a bottom plate 219 fixed to the bottom of the support column, and an end plate fixed to the top of the support column. The bottom plate 219 is provided with mounting holes for inserting fasteners, and the bottom plate 219 fixes the support column to the ground through expansion bolts. The end plate is provided with a threaded hole for threaded connection with the guide column 214, and the guide column 214 provides guidance for the up and down movement of the lifting connecting plate 215.

[0052] In some alternative embodiments: See Figure 1 and Figure 4 As shown, an embodiment of the present application provides a high-frequency welded pipe marking machine, the inkjet host 10 of which is located on one side of the nozzle frame 20, and the inkjet host 10 includes an ink batching box 11, a main control box 12 and an operation box 13 fixedly connected from bottom to top, and a touch panel 14 and a control button 15 are installed on the operation box 13. The main control system of the main control box 12 uses the stm32 chip as the main control chip to control the batching action of the batching box 11. The stm32 chip and the operation box 13 use CAN communication for data exchange. Preferably, the controller of the main control box 12 uses Siemens PLC, and exchanges data with the main control chip stm32 through the Modbus protocol. Preferably, the main control chip stm32 is used to control the pattern formation of the ink nozzle 11.

[0053] In some alternative embodiments: See Figure 1 and Figure 2 As shown, an embodiment of the present application provides a high-frequency welded pipe marking machine, one end of the second guide rail 223 of the high-frequency welded pipe marking machine is provided with an angle adjustment mechanism (not shown in the figure) rotatably connected to the ink nozzle 11, and the angle adjustment mechanism is used to adjust the pitch angle of the ink nozzle 11, so as to make the ink nozzle 11 spray ink vertically toward the high-frequency welded pipe.

[0054] The cantilever 22 is provided with a linear drive mechanism (not shown in the figure) for driving the ink nozzle 11 to slide along the length direction of the second guide rail 223. The ink nozzle 11 is provided with a distance sensor (not shown in the figure), and the distance sensor is electrically connected to the linear drive mechanism. The distance sensor is used to measure the distance between the ink nozzle 11 and the high-frequency welding tube, so that the linear drive mechanism adjusts the ink jetting distance between the ink nozzle 11 and the high-frequency welding tube.

[0055] How it works

[0056] The embodiment of the present application provides a high-frequency welded pipe marking machine. Since the high-frequency welded pipe marking machine of the present application is provided with an inkjet host 10, the inkjet host 10 is connected to an ink nozzle 11 through a control harness and an ink pipeline, and a flexible wire tube 12 that wraps the control harness and the ink pipeline is connected between the inkjet host 10 and the ink nozzle 11; a nozzle frame 20, the nozzle frame 20 includes a cantilever 22 extending in a horizontal direction, and a lifting mechanism 21 that drives the cantilever 22 to move in a vertical direction, and a first guide rail 221 and a first slide 222 are fixedly connected to the cantilever 22; a second guide rail 223 is slidably connected to the first slide 222, one end of the second guide rail 223 is connected to the ink nozzle 11, and the other end of the second guide rail 223 is fixed with a second slide 224 that is slidably connected to the first guide rail 221.

[0057] Therefore, the high-frequency welded pipe marking machine of the present application is connected with a flexible wire tube 12 that wraps the control harness and ink pipeline between the inkjet host 10 and the ink nozzle 11, and the control harness and ink pipeline connecting the inkjet host 10 and the ink nozzle 11 are integrated in the flexible wire tube 12, and the flexible wire tube 12 is used to softly connect to the ink nozzle 11, which solves the problem of entanglement of the control harness and ink pipeline. The installation is simple and efficient, and the problem of ink clogging is not easy to occur. In order to adapt to the welding pipe marking operation of different specifications and models, the first guide rail 221 and the second guide rail 223 on the lifting mechanism 21 and the cantilever 22 can realize the free adjustment of the ink nozzle 11 in the height direction and the free adjustment in the horizontal direction, reducing the labor intensity of workers and improving the marking efficiency of high-frequency welded pipes.

[0058] In addition, a first guide rail and a first slide are fixedly connected to the cantilever, a second guide rail is slidably connected to the first slide, one end of the second guide rail is connected to the ink nozzle, and the other end of the second guide rail is fixed with a second slide slidably connected to the first guide rail. The first guide rail and the second guide rail form a double guide rail structure, forming a stable quadrilateral structure to enhance the structural strength of the cantilever, and ensure that the motion trajectory of the ink nozzle is parallel to the cantilever, the force is evenly applied, and the cantilever does not become unstable, thereby enabling the ink nozzle to have a good spraying effect.

[0059] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0060] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0061] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A high frequency welded pipe marking machine, characterized in that: include: An inkjet main unit (10), wherein the inkjet main unit (10) is connected to an ink jet head (11) via a control harness and an ink pipeline, and a flexible wire tube (12) wrapping the control harness and the ink pipeline is connected between the inkjet main unit (10) and the ink jet head (11); A nozzle frame (20), the nozzle frame (20) comprising a cantilever (22) extending in a horizontal direction, and a lifting mechanism (21) driving the cantilever (22) to move in a vertical direction, and a first guide rail (221) and a first slide seat (222) being fixedly connected to the cantilever (22); A second guide rail (223) is slidably connected to the first slide seat (222), one end of the second guide rail (223) is connected to the ink nozzle (11), and the other end of the second guide rail (223) is fixed with a second slide seat (224) slidably connected to the first guide rail (221).

2. A high frequency welded pipe marking machine as claimed in claim 1, characterized in that: The first guide rail (221) and the second guide rail (223) are arranged in parallel with each other at an interval up and down and extend along the length direction of the cantilever (22); the cross sections of the first guide rail (221) and the second guide rail (223) are both non-circular cross sections; The first slide seat (222) comprises a first mounting plate fixed on the cantilever, and a first guide seat fixed on the first mounting plate, wherein the first guide seat is provided with a guide hole for penetrating into the second guide rail (223); The second slide seat (224) comprises a second mounting plate fixed on the second guide rail (223), and a second guide seat fixed on the second mounting plate, wherein the second guide seat is provided with a guide hole penetrating into the first guide rail (221).

3. A high frequency welded pipe marking machine as claimed in claim 2, characterized in that: One end of the second guide rail (223) is provided with a hanging plate (225) for hanging and clamping the ink nozzle (11); a nozzle base (226) in an "L"-shaped structure is fixedly connected to the ink nozzle (11); the nozzle base (2256) is snap-connected to the hanging plate (225); and the ink jetting direction of the ink nozzle (11) is in the same direction as the length direction of the second guide rail (223).

4. A high frequency welded pipe marking machine as claimed in claim 1, characterized in that: The lifting mechanism (21) comprises a support base (211), a vertically arranged screw rod (212) is rotatably connected to the top of the support base (211), a top plate (213) is rotatably connected to the top of the screw rod (212), and guide columns (214) are symmetrically arranged on both sides of the screw rod (213) and fixed between the support base (211) and the top plate (213); A lifting connecting plate (215) is threadedly connected to the screw rod (212), the lifting connecting plate (215) is slidably connected to the guide column (214), the lifting connecting plate (215) is fixedly connected to the cantilever (22), and the lifting connecting plate (215) drives the cantilever (22) to move up and down.

5. A high frequency welded pipe marking machine as claimed in claim 4, characterized in that: A screw nut threadedly connected to the screw rod (212) is fixedly connected to the lifting connecting plate (215), or a threaded hole threadedly connected to the screw rod (213) is provided on the lifting connecting plate (215), and a guide hole penetrating the guide column (214) is provided on the lifting connecting plate (215), and a linear bearing slidably connected to the guide column (214) is provided in the guide hole.

6. A high frequency welded pipe marking machine as claimed in claim 4, characterized in that: A hand wheel (218) for driving the screw rod (212) to rotate is provided on the top of the screw rod (212), or a servo motor for driving the screw rod (212) to rotate is connected to the top plate (213), and the servo motor and the screw rod (212) are connected via a worm gear transmission.

7. A high frequency welded pipe marking machine as claimed in claim 4, characterized in that: A thrust ball bearing (216) rotatably connected to the screw rod (212) is provided on the top of the support base (211); a cylindrical roller bearing (217) rotatably connected to the screw rod (212) is fixedly connected to the top plate (215); the thrust ball bearing (216) and the cylindrical roller bearing (217) are sleeved on the outer periphery of the screw rod (212) and are coaxially arranged with each other.

8. A high frequency welded pipe marking machine as claimed in claim 4, characterized in that: The support base (211) includes a vertically arranged support column, a bottom plate (219) fixed at the bottom of the support column, and an end plate fixed at the top of the support column. The bottom plate (219) is provided with a mounting hole for inserting a fastener, and the end plate is provided with a threaded hole for threaded connection with the guide column (214).

9. A high frequency welded pipe marking machine as claimed in claim 1, characterized in that: The inkjet main unit (10) is located on one side of the nozzle frame (20), and comprises an ink preparation box (13), a main control box (14) and an operation box (15) which are fixedly connected in sequence from bottom to top, and a touch panel (16) and a control button (17) are installed on the operation box (15).

10. The high frequency welded pipe marking machine according to claim 1, characterized in that: One end of the second guide rail (223) is provided with an angle adjustment mechanism rotatably connected to the ink nozzle (11), and the angle adjustment mechanism is used to adjust the pitch angle of the ink nozzle (11); The cantilever (22) is provided with a linear drive mechanism for driving the ink nozzle (11) to slide along the length direction of the second guide rail (223); the ink nozzle (11) is provided with a distance sensor, and the distance sensor is electrically connected to the linear drive mechanism.

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