Laser printer for steel

Abstract

A laser printer for steel is provided with a machine table, an upper moving laser mechanism is arranged above the machine table, the upper laser mechanism is provided with three first laser devices, and each first laser device drives a laser unit to move in the X-axis direction, the Y-axis direction and the Z-axis direction and corresponds to laser marks on the left side face, the top face and the right side face of the steel respectively. The lower moving laser mechanism is arranged below the upper moving laser mechanism and provided with a second laser device, and the second laser device drives a laser unit of the lower moving laser mechanism to move in the X-axis direction, the Y-axis direction and the Z-axis direction to conduct laser marking on the bottom face of the steel. The front portion and the rear portion of the lower moving laser mechanism are each provided with a conveying device, each conveying device assists in guiding steel through two oppositely-arranged guiding-in baffles, the guiding and conveying position of the steel is clamped and stabilized through two auxiliary clamps, and then the steel is pushed by a driving rolling shaft to move to the machining position to be marked. The device is high in working efficiency.

Description

Technical Field

[0001] The utility model relates to a laser printer, particularly a laser printer for steel materials. Background Art

[0002] In house construction, a steel skeleton is often used as the basic framework for further construction. Before construction, steel bars of different sizes are combined with other building components according to the engineering drawings, and then the construction is carried out. To ensure the accurate position of the combination of other building components and steel bars, it is common for engineering personnel to measure with a measuring tape to confirm the combination position and then manually mark it with a stone pen. However, this method relies on the experience of the staff, not only has low work efficiency, but also has a large manual measurement error, is prone to errors, and requires continuous error correction during the construction process, affecting the project progress.

[0003] Therefore, small machines have been developed in the industry to be placed on the steel bars and move, and print the processing positions on the steel bars according to the engineering data. Although the measurement accuracy has been improved, the printing speed is slow, and it is necessary to wait for the ink to dry before moving to avoid smudging the ink. There are still problems of long time consumption and difficulty in positioning building components for welding. In addition, pulse or milling printing technologies have been developed, but they are still quite time-consuming, cannot mark QR codes, have a high loss rate of working parts, and a high maintenance frequency, which does not meet the requirements of production costs.

[0004] In view of this, how to solve the above problems is the primary issue to be solved by the present utility model. Summary of the Utility Model

[0005] The present utility model aims to provide a laser printer for steel materials. A laser printing component emits laser light, and through a galvanometer scanner, the engineering data is quickly marked on the steel materials, improving the efficiency. It is provided with a three-axis movable structure on all four sides, which can flexibly adjust the position of the galvanometer scanner to adapt to steel materials of different sizes, realizing laser marking on all four sides of the steel materials. And a laser controller is used to regulate the output power to control the intensity and frequency of the laser light emitted by the laser printing component, marking grooves of different depths, achieving the effect of facilitating the marking of material processing, welding or process requirement symbols.

[0006] To achieve the above-mentioned purpose, the present utility model provides a laser printer for steel materials, which has a machine table, and a central control device is arranged on one side of the machine table. The machine table is provided with:

[0007] An upper moving laser mechanism is arranged above the machine table and is provided with two upper row tracks extending along an X axis in parallel. Three first laser devices are sequentially slidably arranged on the two upper row tracks along the X axis for laser marking the left side, top surface and right side of a steel material. Each of the first laser devices is slidably spanned on the two upper row tracks by a first transverse slide seat extending along a Y axis. Two first transverse slide rails extending along the Y axis are arranged in parallel on the first transverse slide seat. A first seat body is slidably arranged on the two first transverse slide rails. A column capable of moving up and down along a Z axis is arranged on the side surface of the first seat body. A laser unit is assembled at the lower end of the column. According to the relative position between the laser unit and the steel material, laser marking is performed on the left side, top surface or right side of the steel material.

[0008] A lower moving laser mechanism is arranged on the machine table and below the upper moving laser mechanism. Two lower row tracks extending along the X axis are arranged in parallel. A second laser device is slidably arranged on the two lower row tracks for laser marking the bottom surface of the steel material. The second laser device is slidably spanned on the two lower row tracks by a second transverse slide seat extending along the Y axis for laser marking the bottom surface of the steel material. The second laser device is slidably spanned on the two lower row tracks by a second transverse slide seat extending along the Y axis. Two second transverse slide rails extending along the Y axis are arranged in parallel on the second transverse slide seat. A second seat body is slidably arranged on the two second transverse slide rails. An installation platform capable of moving up and down along the Z axis is slidably arranged on the side surface of the second seat body. The installation platform extends along the X axis and a laser unit is assembled on its top surface for laser marking the bottom surface of the steel material.

[0009] Wherein, each of the laser units includes a galvanometer and a ranging component arranged on one side of the galvanometer. Each of the galvanometers is respectively connected to a laser printing component arranged in the central control device. After the ranging component detects the in-place position of the steel material and locates the distance between the galvanometer and the steel material, the laser printing component emits laser light that passes through the galvanometer to perform laser marking on the steel material. Each of the laser printing components and each of the galvanometers are also electrically connected to a laser controller arranged in the central control device. The output power is regulated by the laser power component to change the intensity and frequency of the laser light emitted by the corresponding laser printing component, and the reflection angle of the corresponding galvanometer is controlled to make the laser move along a default path to meet the requirement of marking grooves with different depths.

[0010] Two conveying devices are respectively arranged on the machine table and are located in front of and behind the lower moving laser mechanism. The two conveying devices respectively have a fixed clamp seat and a moving clamp seat. The fixed clamp seat is assembled on one side of the machine table. The moving clamp seat moves along the X axis to approach or separate from the fixed clamp seat to clamp or release steel. A driving roller is arranged on the side of the moving clamp seat opposite to the fixed clamp seat, and a driven roller is correspondingly arranged on the fixed clamp seat. After the moving clamp seat moves towards the fixed clamp seat to clamp the left and right sides of the steel, the driving roller rotates to push the steel, and the driven roller rotates along with the movement of the steel to assist in pushing the steel. The moving clamp seat and the fixed clamp seat are respectively provided with an inlet baffle extending towards the outside. Each inlet baffle is assembled on the moving clamp seat or the fixed clamp seat through a mounting plate part. The mounting plate part is integrally connected with a clamping plate part parallel to the Y axis. One side of the clamping plate part different from the mounting plate part extends obliquely outwards to form an inclined plate part, so as to form a trumpet-shaped channel gradually narrowing from the outside to the inside between the two oppositely arranged inlet baffles to assist in guiding and correcting the position of the steel.

[0011] At least two auxiliary jigs are respectively arranged on the side of the conveying device adjacent to the lower moving laser mechanism. Each auxiliary jig has a fixed clamping part and a movable clamping part. The fixed clamping part is provided with a lower clamping roller, and the movable clamping part is correspondingly provided with an upper clamping roller. The movable clamping part moves along the Z axis to approach or separate from the fixed clamping part, so that the upper clamping roller and the lower clamping roller approach each other to assist in clamping the upper and lower end faces of the steel or separate from each other to release the steel.

[0012] Preferably, anti-slip lines are arranged on the outer periphery of the driving roller or the driven roller.

[0013] Preferably, a groove is recessed in the middle of the upper clamping roller to cooperate with and abut against the steel.

[0014] Preferably, each laser unit is further provided with a jetting device for jetting air towards the galvanometer to remove dust on the galvanometer before operation.

[0015] Preferably, a lower rolling device is arranged on the side of each conveying device different from the lower moving laser mechanism. The lower rolling device has a lower rolling shaft, and the two ends of the lower rolling shaft are respectively pivotally arranged on a shaft seat assembled on the machine table for the steel to slide.

[0016] Preferably, the laser controller sets the output power according to the requirements of the laser marking depth, adjusts the intensity and frequency of the laser output by the corresponding laser printing component, so as to mark a groove with a certain depth on the steel; or controls the movement path of each galvanometer relative to the steel through the central control device, so that the galvanometer moves with a delay and moves back and forth, and a groove with a certain depth is generated on the steel to mark symbols for material processing, welding or process requirements.

[0017] The above objects and advantages of the present utility model can be easily and deeply understood from the following detailed description of the selected embodiments and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. is a three-dimensional structural view of the present utility model.

[0019] Figure 2 FIG. is a three-dimensional structural view of the upper moving laser mechanism of the present utility model.

[0020] Figure 3 FIG. is a three-dimensional structural view of the first laser device of the present utility model.

[0021] Figure 4 FIG. is a structural view of the lower moving laser mechanism and the conveying device of the present utility model.

[0022] Figure 5 FIG. is a top view structural view of the lower moving laser mechanism and the conveying device of the present utility model.

[0023] Figure 6 FIG. is a three-dimensional structural view of the second laser device of the present utility model.

[0024] Figure 7 FIG. is a structural view of the auxiliary fixture of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] As Figures 1 to 7 shown, the laser printer for steel provided by the present utility model has a machine table 100, on which there is an upper moving laser mechanism 1, a lower moving laser mechanism 2 located below the upper moving laser mechanism 1, two conveying devices 4 arranged in front of and behind the lower moving laser mechanism 2, and an auxiliary fixture 5 arranged on the adjacent side of the conveying device 4 and the lower moving laser mechanism 2. The machine table 100 is also provided with a central control device 101 for controlling the operation of the above-mentioned various mechanisms and devices.

[0026] As Figures 1 to 3As shown, the upper moving laser mechanism 1 is provided with two upper row tracks 11 extending along an X axis in parallel, and both ends of the two upper row tracks 11 are fixed to the machine table 100 by a support column 12. Three first laser devices 13 are sequentially slidably arranged on the two upper row tracks 11 along the X axis. Each of the first laser devices 13 slidably straddles the two upper row tracks 11 through a first transverse slide 131 extending along the Y axis, and is driven by a first driving device 132 to move along the two upper row tracks 11. Two first transverse slide rails 133 extending along the Y axis are provided in parallel on the first transverse slide 131, and a first seat body 134 is slidably arranged on the two first transverse slide rails 133 and is driven by a second driving device 135 to move along the two first transverse slide rails 133. A column 136 is arranged on the side surface of the first seat body 134, and a first longitudinal guide rail 137 extending along a Z axis is arranged on the side surface of the column 136 opposite to the first seat body 134. A guide slider 138 slidably arranged on the first longitudinal guide rail 137 is connected to the first seat body 134, and the column 136 is driven by a third driving device 139 to move up and down along the Z axis. A laser unit 3 is assembled at the lower end of the column 136. In this embodiment, each of the first laser devices moves along the X axis through the first transverse slide 131, the first seat body 134 moves along the Y axis, and the column 136 moves along the Z axis, so that the laser unit 3 can move along the three axes of the X axis, Y axis and Z axis, and the relative position between the laser unit 3 and the steel is flexibly adjusted to suit steel of different sizes, so that the three first laser devices 13 arranged on the upper moving laser mechanism 1 can respectively perform laser marking on the left side surface, top surface and right side surface of the steel. Among them, the three first laser devices 13 arranged in this embodiment are sequentially used for laser marking on the left side surface, top surface and right side surface of the steel from left to right; and the first driving device 132, the second driving device 135 and the third driving device 139 can be any one of a servo motor, a pneumatic cylinder, a hydraulic cylinder or a gear rack transmission synchronous servo motor, or other existing technical means that can achieve the same driving effect are also acceptable, and the present utility model does not limit them.

[0027] Please refer to Figures 4 to 6As shown, the lower moving laser mechanism 2 is disposed on the machine table 100 and is located below the upper moving laser mechanism 1. The lower moving laser mechanism 2 is provided with two lower row tracks 21 extending along the X axis in parallel, and a second laser device 22 is slidably disposed on the two lower row tracks 21. Further description, the second laser device 22 has a second transverse slide 221 extending along the Y axis, and the second transverse slide 221 is slidably disposed across the two lower row tracks 21 and is driven by a fourth driving device 222 to move along the two lower row tracks 21. Two second transverse slide rails 223 extending along the Y axis are provided in parallel on the second transverse slide 221. A second seat body 224 is slidably disposed on the two second transverse slide rails 223 and is driven by a fifth driving device 225 to move along the two second transverse slide rails 223. Two second longitudinal guide rails 226 extending along the Z axis are provided in parallel on the side surface of the second seat body 224, and a mounting platform 227 is slidably disposed on the two second longitudinal guide rails 226 and is driven by a sixth driving device 228 to move up and down along the Z axis. The mounting platform 227 extends along the X axis and a laser unit 3 is assembled on its top surface. In this embodiment, by moving the second transverse slide 221 along the X axis, the second seat body 224 along the Y axis, and the mounting platform 227 along the Z axis, the laser unit 3 assembled on the second laser device 22 can move along the three axes of the X axis, Y axis, and Z axis, so as to flexibly adjust the relative position between the laser unit 3 and the steel, and enable the second laser device 22 to perform laser marking on the bottom surface of steel with different sizes. Among them, in this embodiment, the fourth driving device 222, the fifth driving device 225, and the sixth driving device 228 can be any one of a servo motor, a pneumatic cylinder, a hydraulic cylinder, or a gear rack transmission synchronous servo motor, or other existing technical means that can achieve the same driving effect are also acceptable, and the present utility model does not limit them.

[0028] Further description, as Figure 2 , Figure 3 and Figure 6As shown, the laser units 3 of the three first laser devices 13 provided in the upper moving laser mechanism 1 and the second laser device 22 provided in the lower moving laser mechanism 2 each include a galvanometer 31 and a ranging component 32. Each of the galvanometers 31 is respectively connected to a laser printing component (not shown in the figure) provided in the central control device 101. According to the position where the steel needs to be processed, the mirrors of these galvanometers 31 are respectively oriented towards the left side, top surface, right side, and bottom surface of the steel. Then, through the respective ranging components 32, the in-place positions of the steel are detected from the four directions of up, down, left, and right respectively, and the distances between each galvanometer and the steel are located. Then, a laser is emitted by each laser printing component (not shown in the figure) through the corresponding galvanometer 31 to perform laser marking on the steel, so as to ensure the accuracy of the laser marking position and reduce the cumulative tolerance in subsequent processes. Moreover, each laser unit 3 is also provided with an air jet device 33 that jets air towards the galvanometer 31 to remove the dust on the galvanometer 31 before operation, so as to avoid the dust reducing the laser intensity and interfering with the laser marking effect. Each laser printing component (not shown in the figure) and each galvanometer 31 are additionally electrically connected to a laser controller (not shown in the figure) provided in the central control device 101. Through the laser controller (not shown in the figure), the output power is regulated to change the intensity and frequency of the laser emitted by the corresponding laser printing component (not shown in the figure), and the reflection angle of the corresponding galvanometer 31 is controlled so that the laser moves along a default path to meet the requirements of marking grooves with different depths and shapes. During welding processing, other building components can be embedded into the corresponding grooves to achieve the effects of preliminary positioning and improving the welding and fixing efficiency. The utility model can also control the movement paths of each galvanometer 31 relative to the steel through the central control device 101, so that each galvanometer 31 moves with a delay and back and forth, and grooves with a certain depth are generated on the steel to achieve the marking of material processing, welding, or process requirement symbols.

[0029] Continuing from the above, as Figure 4 and Figure 5As shown in the figure, a conveying device 4 is provided respectively in front of and behind the downward moving laser mechanism 2. The conveying device 4 has a fixed clamp seat 41 and a moving clamp seat 42. The fixed clamp seat 41 is set on one side of the machine table 100, and the moving clamp seat 42 is driven by a pneumatic cylinder 421 to move along the X axis to approach or separate from the fixed clamp seat 41. It can also be other driving structures capable of driving the moving clamp seat 42 to move in the prior art, which is not limited in the present utility model. Among them, a driving roller 422 is provided on the opposite side of the moving clamp seat 42 to the fixed clamp seat 41, and a driven roller 411 is correspondingly provided on the fixed clamp seat 41. When the moving clamp seat 42 moves towards the fixed clamp seat 41 and clamps the left and right side surfaces of the steel with the driving roller 422 and the driven roller 411, the driving roller 422 is driven to rotate by a driving motor 423, and the steel is pushed through the frictional force between the driving roller 422 and the steel, while the driven roller 411 is driven to rotate together by the frictional force of the steel to assist in pushing the steel. Anti-slip lines are arranged on the outer periphery of the driving roller 422 or the driven roller 411. The present utility model preferably arranges anti-slip lines on the outer peripheries of the driving roller 422 and the driven roller 411 to increase the frictional force between the driving roller 422, the driven roller 411 and the steel and ensure smooth conveyance of the steel.

[0030] In addition, please continue to refer to Figure 4 and Figure 5 As shown in the figure, an inlet baffle 43 extending outward is provided respectively on the moving clamp seat 42 and the fixed clamp seat 41 of each conveying device 4. Specifically, each inlet baffle 43 is set on the moving clamp seat 42 or the fixed clamp seat 41 with a mounting plate portion 431. The mounting plate portion 431 is integrally connected with a clamping plate portion 432 parallel to the Y axis, and the side of the clamping plate portion 432 relatively far from the mounting plate portion 431 extends obliquely outward to form an inclined plate portion 433, so that a trumpet-shaped channel gradually narrowing from the outside to the inside is formed between the two relatively arranged inlet baffles 43. When the moving clamp seat 42 approaches the fixed clamp seat 41, the steel is first deflected by the inclined plate portion 433 and guided towards the downward moving laser mechanism 2, and then the clamping plate portion 432 fits the left and right side surfaces of the steel to straighten the steel, avoiding the deviation of the steel position from affecting the accuracy of the laser marking.

[0031] To further ensure that the steel maintains a fixed position when being laser marked, as shown in Figure 4 and Figure 5 As shown in the figure, an auxiliary fixture 5 is also provided on the side of each conveying device 4 adjacent to the downward moving laser mechanism 2. There are at least two auxiliary fixtures 5 in the present utility model, and preferably 4 auxiliary fixtures 5 are provided. As shown in Figure 7As shown in the figure, each of the auxiliary jigs 5 has a fixed clamping part 51 and a movable clamping part 52. The fixed clamping part 51 is provided with a lower clamping roller 511, and the movable clamping part 52 is correspondingly provided with an upper clamping roller 521. A groove 522 is recessed in the middle of the upper clamping roller 521 for fitting and abutting against the top edge of the steel. The movable clamping part 52 is driven by a pneumatic cylinder 53 to move closer to or away from the fixed clamping part 51 along the Z axis. It can also be other driving structures in the prior art that can drive the movable clamping part 52 to move. The present utility model does not limit this. When the steel is introduced by the conveying device, the bottom surface of the steel fits on the lower clamping roller 511, and the movable clamping part 52 descends until the upper clamping roller 521 fits on the top of the steel, thereby clamping the upper and lower end faces of the steel, further stabilizing the feeding position of the steel channel, and ensuring accurate marking of the steel by the laser printing assembly.

[0032] In addition, as Figure 1 and Figure 4 shown, on the side of each conveying device 4 relatively far from the lower moving laser mechanism 2, a lower rolling device 6 is provided. Each lower rolling device 6 has a lower rolling shaft 61, and both ends of the lower rolling shaft 61 are pivotally arranged on a set of shaft seats 62 provided on the machine table. When the steel is clamped and conveyed by the conveying device 4 and the auxiliary jig 5, its bottom surface is supported by the lower rolling shaft 61, and the rotation of each lower rolling shaft 61 is driven by the frictional force between the steel and each lower rolling shaft 61 for the steel to slide.

[0033] In summary, the laser printer for steel provided by the present utility model has the following technological progress and advantages:

[0034] First, quickly mark engineering data on the steel to improve work efficiency; mark engineering data on the steel in a laser manner, which takes less time than traditional oil printing, pulse, and milling methods, improving work efficiency; and the small laser diameter can mark more complex graphics such as QR codes (QR code), facilitating operators to obtain relevant information of the steel by scanning the QR code, improving the convenience of operation.

[0035] Second, it is applicable to steels of different sizes and has high processing flexibility; in the present utility model, laser devices are correspondingly provided on the upper, lower, left, and right four sides of the steel, facilitating operators to select and activate the laser devices corresponding to the sides of the steel according to the shape of the steel and the number of processing surfaces. For example, for square tube materials, the laser devices in four directions can be activated; for C-shaped steels, the laser devices corresponding to their three sides can be activated for laser marking; and both the first laser device and the second laser device can drive the laser unit to move along the X axis, Y axis, and Z axis. Cooperating with the ranging component, the laser units can accurately position different steel positions and marking positions, with high processing flexibility and good industrial applicability.

[0036] Third, the positioning accuracy of components is high, reducing cumulative tolerances. The intensity and frequency of the laser emitted by the laser printing component are regulated by a laser controller, or the movement path of the galvanometer relative to the steel is changed, causing the laser printing component to move with a delay or back and forth, creating grooves with different depths on the steel, facilitating the marking of symbols for material processing, welding, or manufacturing requirements. Grooves with a suitable depth can be created on the steel according to the dimensions of other building components, enabling other building components to be inserted into the corresponding grooves for preliminary positioning and welding, solving the problem of easy deviation of components during welding, improving the positioning accuracy of components, and reducing the cumulative tolerances in subsequent projects.

[0037] However, the disclosure of the above embodiments is only used to illustrate the present invention and is not used to limit the present invention. Therefore, any change in numerical values or replacement of equivalent components still belongs to the scope of the present invention.

[0038] In summary, it should be possible for those skilled in the art to understand that the present invention can indeed achieve the aforementioned objectives and has met the requirements of the Patent Law. Therefore, an application is filed in accordance with the law.

Claims

1. A laser printer for steel, characterized in that, It has a machine platform, and a central control device is arranged on one side of the machine platform. The machine platform further includes: An upper moving laser mechanism is arranged above the machine platform. Two upper row tracks extending along the X axis are arranged in parallel. Three first laser devices are sequentially slid on the two upper row tracks along the X axis for laser marking the left side, top surface and right side of a steel material. Each of the first laser devices is slidably spanned on the two upper row tracks by a first transverse slide seat extending along the Y axis. Two first transverse slide rails extending along the Y axis are arranged in parallel on the first transverse slide seat. A first seat body is slid on the two first transverse slide rails. A column capable of moving up and down along the Z axis is arranged on the side surface of the first seat body. A laser unit is assembled at the lower end of the column for laser marking the left side, top surface or right side of the steel material; A lower moving laser mechanism is arranged on the machine platform and below the upper moving laser mechanism. Two lower row tracks extending along the X axis are arranged in parallel. A second laser device is slid on the two lower row tracks for laser marking the bottom surface of the steel material. The second laser device is slidably spanned on the two lower row tracks by a second transverse slide seat extending along the Y axis. Two second transverse slide rails extending along the Y axis are arranged in parallel on the second transverse slide seat. A second seat body is slid on the two second transverse slide rails. An installation platform capable of moving up and down along the Z axis is slid on the side surface of the second seat body. The installation platform extends along the X axis and a laser unit is assembled on its top surface for laser marking the bottom surface of the steel material; Wherein, each of the laser units includes a galvanometer and a ranging component arranged on one side of the galvanometer. Each of the galvanometers is respectively connected to a laser printing component arranged in the central control device. The ranging component detects the in-place position of the steel material and locates the distance between the galvanometer and the steel material. The laser printing component emits laser light which passes through the galvanometer to perform laser marking on the steel material. Each of the laser printing components and each of the galvanometers are also electrically connected to a laser controller arranged in the central control device. The output power is regulated through the laser controller to change the intensity and frequency of the laser light emitted by the corresponding laser printing component, and the reflection angle of the corresponding galvanometer is controlled so that the laser light moves along a default path to meet the requirements of marking grooves with different depths and shapes; Two conveying devices are respectively arranged on the machine table and are located in front of and behind the lower moving laser mechanism. The two conveying devices respectively have a fixed clamp seat and a moving clamp seat. The fixed clamp seat is set on one side of the machine table. The moving clamp seat moves along the X axis to approach or separate from the fixed clamp seat to clamp or release the steel. An active roller is arranged on the side opposite to the fixed clamp seat of the moving clamp seat, and a driven roller is correspondingly arranged on the fixed clamp seat. When conveying the steel, the active roller rotates to push the steel, and the driven roller rotates along with the movement of the steel to assist in pushing the steel; the moving clamp seat and the fixed clamp seat are respectively provided with an inlet baffle extending towards the outside. Each inlet baffle is set on the moving clamp seat or the fixed clamp seat through a mounting plate part. The mounting plate part is integrally connected with a clamping plate part parallel to the Y axis. One side of the clamping plate part different from the mounting plate part extends obliquely outwards to form an inclined plate part, so as to form a trumpet-shaped channel that gradually shrinks from the outside to the inside between the two oppositely arranged inlet baffles to assist in guiding and correcting the position of the steel; At least two auxiliary jigs are respectively arranged on one side of each conveying device adjacent to the lower moving laser mechanism. Each auxiliary jig has a fixed clamping part and a movable clamping part. The fixed clamping part is provided with a lower clamping roller, and the movable clamping part is correspondingly provided with an upper clamping roller. The movable clamping part moves along the Z axis to approach or separate from the fixed clamping part, so that the upper clamping roller and the lower clamping roller approach each other to assist in clamping the upper and lower end faces of the steel or separate from each other to release the steel.

2. The laser printer for steel as described in claim 1, characterized in that, Anti-slip lines are arranged on the outer circumference of the active roller or the driven roller.

3. The laser printer for steel as claimed in claim 1, wherein, A groove is recessed in the middle of the upper clamping roller to cooperate with and abut against the steel.

4. The laser printer for steel as described in claim 1, characterized in that, Each laser unit is provided with a gas jet device for jetting gas towards the galvanometer to remove the dust on the galvanometer.

5. The laser printer for steel as claimed in claim 1, wherein, On one side of each conveying device different from the lower moving laser mechanism, a lower rolling device is provided. The lower rolling device has a lower rolling shaft, and both ends of the lower rolling shaft are respectively pivotally arranged on a shaft seat set on the machine table for the steel to slide.

6. The laser printer for steel as claimed in claim 1, wherein, The laser controller is used to set the output power according to the requirements of the laser marking depth, and adjust the intensity and frequency of the laser output by the corresponding laser printing component, so as to mark a groove with a certain depth on the steel; or the central control device is used to control the movement path of each galvanometer relative to the steel, so that the galvanometer moves with a delay and moves back and forth, so as to generate a groove with a certain depth on the steel, so as to mark the symbols required for material processing, welding or manufacturing processes.

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