Laser marking machine for steel

Abstract

A laser marking machine for steel. An upper movable laser mechanism (1) is provided above a machine table (100), the upper movable laser mechanism (1) is provided with three first laser devices (13), and the first laser devices (13) respectively perform laser marking on a left side, a top surface and a right side of steel; a lower movable laser mechanism (2) is provided below the upper movable laser mechanism (1), and a second laser device (22) is used to perform laser marking on a bottom surface of the steel; and two conveying devices (4) are respectively provided in front of and behind the lower movable laser mechanism (2), to convey the steel to a designated position for laser marking.

Description

Steel laser printer TECHNICAL FIELD

[0001] The present invention relates to a laser printer, in particular to a steel laser printer. BACKGROUND

[0002] House building is often built with steel skeleton to build the basic framework and then build the next step. Before building, different sizes of steel skeleton are combined with other building components according to the engineering drawing, and then the building is built. In order to ensure the accurate position of the combination of other building components and steel skeleton, the common engineering personnel confirms the combination position by measuring with a ruler and then manually marks with a pen, but it needs to rely on the experience of the workers, not only the work efficiency is low, but also the manual measurement error is large, which is easy to make mistakes, resulting in the need to constantly correct errors during the building process, affecting the engineering progress.

[0003] Therefore, small machines are developed in the industry to be placed on the steel skeleton and moved, and the processing position is printed on the steel skeleton according to the engineering data. Although the measurement accuracy is improved, the printing speed is slow, and the ink needs to be dried before moving to prevent the ink from being smeared, which still has the problem of long time consumption and not easy to position the building components for welding. In addition, pulse or milling printing technology is developed, but it is still quite time-consuming and cannot mark QR code, the workpiece loss rate is high, the maintenance frequency is high, and it does not meet the production cost requirements.

[0004] Therefore, how to solve the above problems is the primary task of the present invention.

[0005] SUMMARY

[0006] The present invention aims to provide a steel laser printer to emit laser light from a laser printing element, quickly mark engineering data on steel through a galvanometer, improve efficiency; four sides are provided with a three-axis movable structure, flexibly adjust the position of the galvanometer to adapt to steel of different sizes, realize laser marking on the four sides of the steel; and a laser controller is used to control the output power to control the intensity and frequency of the laser light emitted by the laser printing element, mark grooves of different depths, and achieve the effect of conveniently marking material processing, welding or process requirement symbols.

[0007] To achieve the foregoing purpose, the present application provides a laser printer for steel material, which is provided with a machine table, an upper moving laser mechanism arranged above the machine table, three first laser devices arranged in the upper moving laser mechanism, each first laser device driving a laser unit to move along the X-axis direction, Y-axis direction and Z-axis direction, and corresponding to the left side surface, top surface and right side surface of the steel material for laser marking, a lower moving laser mechanism arranged below the upper moving laser mechanism, a second laser device arranged in the lower moving laser mechanism, the second laser device driving the laser unit thereof to move along the X-axis direction, Y-axis direction and Z-axis direction, and corresponding to the bottom surface of the steel material for laser marking, a conveying device arranged in front of and behind the lower moving laser mechanism, each conveying device assisting in guiding the steel material through two oppositely arranged guide-in baffles, clamping and stabilizing the steel material in the guiding position by two auxiliary clamps, and then moving the steel material towards the lower moving laser mechanism by the driving roller of the conveying device, and after the steel material is positioned, marking the steel material by the first laser devices and the second laser device. BRIEF DESCRIPTION OF DRAWINGS

[0008] Fig. 1 is a schematic diagram of the three-dimensional structure of the present application.

[0009] Fig. 2 is a schematic diagram of the three-dimensional structure of the upper moving laser mechanism of the present application.

[0010] Fig. 3 is a schematic diagram of the three-dimensional structure of the first laser device of the present application.

[0011] Fig. 4 is a schematic diagram of the structure of the lower moving laser mechanism and the conveying device of the present application.

[0012] Fig. 5 is a schematic diagram of the top view structure of the lower moving laser mechanism and the conveying device of the present application.

[0013] Fig. 6 is a schematic diagram of the three-dimensional structure of the second laser device of the present application.

[0014] Fig. 7 is a schematic diagram of the structure of the auxiliary clamp of the present application. DETAILED DESCRIPTION

[0015] As shown in Figs. 1 to 7, the laser printer for steel material provided by the present application has a machine table 100, the machine table 100 is provided with an upper moving laser mechanism 1, a lower moving laser mechanism 2 arranged 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 clamp 5 arranged adjacent to the conveying device 4 and the lower moving laser mechanism 2, and the machine table 100 is further provided with a central control device 101 for controlling the operation of each of the above mechanisms and devices.

[0016] As shown in FIGS. 1-3, the upper moving laser mechanism 1 is provided with two upper rails 11 extending along an X-axis in parallel, and the two ends of the two upper rails 11 are fixed to the machine table 100 by a support column 12. Three first laser devices 13 are sequentially arranged on the two upper rails 11 along the X-axis. Each first laser device 13 is slidably arranged on the two upper rails 11 by a first transverse slide 131 extending along a Y-axis, and is driven to move along the two upper rails 11 by a first driving device 132. The first transverse slide 131 is provided with two first transverse rails 133 extending along the Y-axis in parallel, a first seat 134 is slidably arranged on the two first transverse rails 133, and is driven to move along the two first transverse rails 133 by a second driving device 135. The side surface of the first seat 134 is provided with a vertical column 136, and the side surface opposite to the first seat 134 is provided with a first longitudinal guide rail 137 extending along a Z-axis, so that a guide slide block 138 arranged on the first longitudinal guide rail 137 is connected to the first seat 134, and the vertical column 136 is driven to move up and down along the Z-axis by a third driving device 139. The lower end of the vertical column 136 is connected to a laser unit 3. In the embodiment, each first laser device is moved along the X-axis by the first transverse slide 131, is moved along the Y-axis by the first seat 134, and is moved along the Z-axis by the vertical column 136, so that the laser unit 3 can be moved along the X-axis, the Y-axis and the Z-axis, the relative position between the laser unit 3 and the steel material is flexibly adjusted to adapt to steel materials of different sizes, and the three first laser devices 13 arranged on the upper moving laser mechanism 1 can be used to mark the left side surface, the top surface and the right side surface of the steel material, respectively. In the embodiment, the three first laser devices 13 are sequentially arranged from left to right to mark the left side surface, the top surface and the right side surface of the steel material, respectively. The first driving device 132, the second driving device 135 and the third driving device 139 can be any one of a servo motor, an air cylinder, an oil cylinder or a gear and rack transmission synchronous servo motor, or other prior art means that can achieve the same driving effect, and the present application is not limited thereto.

[0017] Please participate in the figure 4 to the figure 6 shows, the lower laser mechanism 2 is set on the machine table 100, and is below the upper laser mechanism 1. The lower laser mechanism 2 is parallelly provided with two lower rows of tracks 21 extending along the X axis, and a second laser device 22 is slidably arranged on the two lower rows of tracks 21. Further, the second laser device 22 has a second transverse slide 221 extending along the Y axis, which is slidably arranged on the two lower rows of tracks 21 and is driven by a fourth driving device 222 to move along the two lower rows of tracks 21. The second transverse slide 221 is parallelly provided with two second transverse slides 223 extending along the Y axis. A second seat 224 is slidably arranged on the two second transverse slides 223 and is driven by a fifth driving device 225 to move along the two second transverse slides 223. The side surface of the second seat 224 is parallelly provided with two second longitudinal guides 226 extending along the Z axis, and an installation platform 227 is slidably arranged on the two second longitudinal guides 226 and is driven by a sixth driving device 228 to move up and down along the Z axis. The installation platform 227 extends along the X axis and is provided with a laser unit 3 on the top surface thereof. In this embodiment, the laser unit 3 arranged on the second laser device 22 can move along the X axis, the Y axis and the Z axis by moving the second transverse slide 221 along the X axis, moving the second seat 224 along the Y axis and moving the installation platform 227 along the Z axis, so as to flexibly adjust the relative position between the laser unit 3 and the steel material, and the second laser device 22 can mark the bottom surface of the steel material of different sizes. 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, an air cylinder, an oil cylinder or a gear and rack transmission synchronous servo motor, or other prior art means that can achieve the same driving effect, and the present application is not limited thereto.

[0018] As shown in FIG. 2, FIG. 3 and FIG. 6, each of the laser units 3 of the three first laser devices 13 of the upper moving laser mechanism 1 and the second laser device 22 of the lower moving laser mechanism 2 comprises a galvanometer 31 and a distance measuring element 32, and each galvanometer 31 is connected to a laser printing element (not shown in the figure) in the control device 101. According to the position of the steel to be processed, the mirror surface of each galvanometer 31 is arranged to face the left side, top, right side and bottom of the steel, and then the distance measuring element 32 detects the position of the steel from the upper, lower, left and right directions, respectively, and locates the distance between the galvanometer and the steel, and then the laser printing element (not shown in the figure) emits laser light through the corresponding galvanometer 31 to mark the steel, so as to ensure the accuracy of the laser marking position and reduce the cumulative tolerance of the subsequent engineering. Each laser unit 3 is also provided with a gas jet device 33 for spraying gas towards the galvanometer 31 to remove dust on the galvanometer 31 before operation, so as to avoid dust reducing the intensity of the laser light and interfering with the laser marking effect. Each laser printing element (not shown in the figure) and each galvanometer 31 is electrically connected to a laser controller (not shown in the figure) in the control device 101, and the laser controller (not shown in the figure) adjusts the output power to change the intensity and frequency of the laser light emitted by the corresponding laser printing element (not shown in the figure), and controls the reflection angle of the corresponding galvanometer 31 to make the laser light move along a predetermined path, so as to mark grooves with different depths and shapes. During welding processing, other building components can be embedded in the corresponding grooves to achieve the effects of preliminary positioning and improving welding fixing efficiency. The present application can also control the movement path of each galvanometer 31 relative to the steel through the control device 101, so that each galvanometer 31 moves with a delay and back and forth, and generates grooves with a certain depth on the steel, so as to mark the material processing, welding or process required symbols.

[0019] As shown in FIG. 4 and FIG. 5, the front and rear of the lower laser mechanism 2 are respectively provided with a conveying device 4. The conveying device 4 has a fixed clamp seat 41 and a movable clamp seat 42. The fixed clamp seat 41 is arranged on one side of the machine table 100, and the movable clamp seat 42 is driven to move along the X-axis to approach or move away from the fixed clamp seat 41 by a pneumatic cylinder 421. The movable clamp seat 42 can also be driven to move by other driving structures in the prior art, and the present application is not limited thereto. The movable clamp seat 42 is provided with a driving roller 422 on the side opposite to the fixed clamp seat 41, and the fixed clamp seat 41 is provided with a driven roller 411. When the movable clamp seat 42 moves towards the fixed clamp seat 41, the driving roller 422 and the driven roller 411 clamp the left and right sides of the steel. Then, the driving roller 422 is driven to rotate by a driving motor 423, and the steel is pushed by the friction between the driving roller 422 and the steel. The driven roller 411 is also rotated by the friction of the steel to assist in pushing the steel. The outer periphery of the driving roller 422 or the driven roller 411 is provided with a non-slip pattern, and the outer periphery of the driving roller 422 and the driven roller 411 is preferably provided with a non-slip pattern to increase the friction between the driving roller 422, the driven roller 411 and the steel, and to ensure smooth conveying of the steel.

[0020] In addition, as shown in FIG. 4 and FIG. 5, the movable clamp seat 42 and the fixed clamp seat 41 of each conveying device 4 are respectively provided with an outwardly expanding guide baffle 43. In detail, each guide baffle 43 is arranged on the movable clamp seat 42 or the fixed clamp seat 41 by a mounting plate part 431, the mounting plate part 431 is integrally connected with a clamping plate part 432 parallel to the Y-axis, and the clamping plate part 432 is outwardly expanded to form a inclined plate part 433 on the side opposite to the mounting plate part 431, so that the two guide baffles 43 arranged opposite to each other form a trumpet-shaped channel gradually narrowing from outside to inside. When the movable clamp seat 42 approaches the fixed clamp seat 41, the steel is first guided downward to the direction of the lower laser mechanism 2 by the inclined plate part 433, and then the clamping plate part 432 is in contact with the left and right sides of the steel to guide the steel, so as to avoid the position deviation of the steel affecting the accuracy of the laser marking.

[0021] To further ensure that the steel is maintained in a fixed position when it is laser marked, as shown in FIG. 4 and FIG. 5, an auxiliary clamp 5 is provided on the side adjacent to each conveying device 4 and the lower moving laser mechanism 2. In the present application, at least two auxiliary clamps 5 are provided, and preferably four auxiliary clamps 5 are provided. As shown in FIG. 7, each auxiliary clamp 5 has a fixed clamping portion 51 and a movable clamping portion 52. The fixed clamping portion 51 is provided with a lower clamping roller 511, and the movable clamping portion 52 is provided with a corresponding upper clamping roller 521. The middle of the upper clamping roller 521 is recessed with a groove 522 for abutting the top edge of the steel. The movable clamping portion 52 is driven by a pneumatic cylinder 53 to move towards or away from the fixed clamping portion 51 along the Z-axis. Other driving structures that can drive the movable clamping portion 52 to move can also be used, and the present application is not limited in this regard. When the steel is introduced by the conveying device, the bottom surface of the steel is in contact with the lower clamping roller 511, and the movable clamping portion 52 is lowered so that the upper clamping roller 521 is in contact with the top end of the steel. Thus, the upper and lower ends of the steel are clamped, further stabilizing the conveying position of the steel, and ensuring that the laser printing element accurately marks the steel.

[0022] In addition, as shown in FIG. 1 and FIG. 4, a lower roller conveying device 6 is provided on the side opposite to the lower moving laser mechanism 2 of each conveying device 4. Each lower roller conveying device 6 has a lower roller conveying shaft 61, and the two ends of the lower roller conveying shaft 61 are respectively pivoted to a set of shaft seats 62 provided on the machine table. When the steel is conveyed by the conveying device 4 and the auxiliary clamp 5, the bottom surface of the steel is supported by the lower roller conveying shaft 61, and the lower roller conveying shaft 61 is rotated by the friction between the steel and the lower roller conveying shaft 61 to allow the steel to slide.

[0023] In summary, the laser printer for steel provided by the present application has the following technical progress and advantages:

[0024] First, the project data is quickly marked on the steel, improving work efficiency. Compared with the traditional oil printing, pulse and milling methods, the laser marking method takes less time and improves work efficiency. In addition, the small diameter of the laser beam can mark more complex patterns such as QR codes, which facilitates workers to obtain relevant information of the steel through scanning the QR code, and improves the work convenience.

[0025] Second, it is suitable for different sizes of steel, and has high processing flexibility. The present application provides laser devices corresponding to the upper, lower, left and right surfaces of the steel. The user can select and activate the laser devices corresponding to the side surfaces of the steel according to the shape and the number of processing surfaces of the steel. For example, for square tube materials, four laser devices in four directions can be activated. For C-shaped steel, three laser devices corresponding to the three side surfaces can be activated for laser marking. In addition, each first laser device and second laser device can drive the laser unit to move along the X-axis, Y-axis and Z-axis, and cooperate with the distance measuring element to accurately position the laser unit at different positions of the steel and marking positions, which has high processing flexibility and good industrial applicability.

[0026] Third, the component positioning accuracy is high, and the cumulative tolerance is reduced; the intensity and frequency of the emitted laser light of the laser printing element are regulated by the laser controller, or the moving path of the galvanometer relative to the steel is changed, so that the laser printing element moves with a delay or back and forth, producing grooves with different depths on the steel, facilitating the processing, welding or process requirement symbols of the marking material; grooves with a depth corresponding to the size of other building components can be produced on the steel, so that other building components can be embedded in the corresponding grooves for preliminary positioning and welding, solving the problem of component deviation during welding, improving the component positioning accuracy and reducing the cumulative tolerance of subsequent engineering.

Claims

1. A laser marker for steel materials, characterized by, The utility model relates to a laser marking machine, which comprises a machine table, a control device arranged on one side of the machine table, and a laser marking mechanism arranged on the machine table. The laser marking mechanism comprises an upper laser marking mechanism arranged above the machine table, two upper rails extending along the X-axis and arranged in parallel, three first laser devices sequentially arranged on the two upper rails along the X-axis, and used for marking the left side, top surface and right side of a steel material. The laser marking mechanism further comprises a lower laser marking mechanism arranged below the upper laser marking mechanism, two lower rails extending along the X-axis and arranged in parallel, and a second laser device arranged on the two lower rails and used for marking the bottom surface of the steel material. Each laser unit comprises a galvanometer and a distance measuring element arranged on one side of the galvanometer. The laser marking mechanism further comprises two conveying devices arranged on the machine table and located in front of and behind the lower laser marking mechanism. Each conveying device comprises a fixed clamping seat and a movable clamping seat. The movable clamping seat is arranged on the opposite side of the fixed clamping seat and is movable relative to the fixed clamping seat along the X-axis to clamp or release the steel material. The movable clamping seat and the fixed clamping seat are respectively provided with an outwardly extending guide baffle. The movable clamping seat and the fixed clamping seat are respectively provided with an outwardly extending guide baffle. The movable clamping seat and the fixed clamping seat are respectively provided with an outwardly extending guide baffle. 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The fixed clamp portion is provided with a lower clamping roller, and the movable clamp portion is provided with an upper clamping roller. The movable clamp portion moves along the Z-axis to approach or move away from the fixed clamp portion, so that the upper clamping roller and the lower clamping roller approach each other to clamp the upper and lower end surfaces of the steel or move away from each other to release the steel.

2. The laser marker for steel material according to claim 1, characterized in that, The outer periphery of the driving roller or the driven roller is provided with anti-slip patterns.

3. The laser marker for steel material according to claim 1, wherein The middle of the upper clamping roller is recessed to match the abutment of the steel.

4. The laser marker for steel material according to claim 1, wherein Each laser unit is provided with a gas jet device facing the galvanometer to remove dust on the galvanometer by jetting gas before operation.

5. The laser marker for steel material according to claim 1, wherein Each conveying device is provided with a lower roller conveying device on the side opposite to the lower movable laser mechanism. The lower roller conveying device has a lower roller conveying shaft. The two ends of the lower roller conveying shaft are respectively pivotally arranged on a group of shaft seats arranged on the machine table to allow the steel to slide.

6. The laser marker for steel material according to claim 1, wherein The laser controller sets the output power according to the depth of the laser mark, adjusts the intensity and frequency of the laser light output by the corresponding laser printing element, and marks 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 back and forth to produce a groove with a certain depth on the steel to mark the material processing, welding or process requirement symbol.

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