Laser engraving machine fault handling method and its operation guide

First, the laser engraving machine common faults and their treatment methods

(1) How to save time

When making a large number of small-sized products of the same specification (such as a 75X25mm badge), the maximum width in the X direction should be less than 300mm, which can make the laser head go faster and faster. When engraving a bitmap, you can reduce the resolution appropriately to speed up. In addition, the depth of laser machining is proportional to power and speed, that is, the faster the speed is, the shallower the engraving depth is, and the deeper the reverse is. Therefore, the speed and power should be increased as much as possible to shorten the time.

(2) How to avoid waste

In the standard configuration of the general laser engraving machine, there is a red light positioning device. When processing irregular products, first use red light to position and observe the accuracy of the engraving position, and then formally process. For materials that have not been seen before, the principle of low to high power should be followed.

(3) Machine without laser

First check the magnetic switch of the laser engraving machine, the magnetic switch of the front door and its line for looseness or shedding. (There is a user in Shandong. Before going to work on the first night, the machine was wiped clean from the inside out. The next morning, the machine was not launched. The laser has been checked, which is caused by the magnetic switch circuit falling off when the machine is wiped). Then check whether there is any problem with the reflection and focusing lens (after a user wipes the reflective lens in Beijing, the fixing screw is not screwed, causing the lens to loosen and causing no laser). If it is not the above reasons, you must contact the maintenance personnel, please do not handle it yourself.

(4) Large areas of engraving and cutting are different in depth

This is due to the laser light path being incorrect. Just adjust the light path (there is special training at the time of purchase).

(5) Deformation of the lettering body

A. If the nose pulley of the nose is seriously worn, causing the nose carriage to loosen, replace the pulley.

B. If the tension of the left and right sides of the Y-axis is not the same, adjust the hex screw at the rear end of the Y-axis to the same tension.

C. If the driven wheel on the left side of the X-axis is worn, replace the driven wheel.

D. If the X-axis motor fails, replace the motor.

E. If the fastening screws of the X-axis motor and the pulley are loose, tighten the screws.

(6) The engraving machine is inscribed, and the memory is in poor contact or damaged. Reinstall the memory or replace the memory.

(7) The computer interface should be set to SPP

(8) The laser engraving machine data line should be away from the interference source

(9) It is best to use the same socket for the computer and laser engraving machine to avoid potential difference.

(10) The power suddenly decays half of the laser tube failure, and can only be returned to the factory for repair.

(11) Laser engraving machine power is gradually attenuated

First, check that the reflective lens and the focusing lens are clean and the optical path is not correct. If there is no problem, you should contact the maintenance personnel in time.

(12) In the case of large-area engraving and cutting, there are cases where the depth is different, such as a material problem. It must be that the light path is not correct.

(13) The automatic measuring stick failure of the laser engraving machine

Mostly due to damage to the flat cable connected to it, it can be used normally after replacement.

Second, the laser engraving machine simple operation guide

After the processing file is programmed, the machining position can be selected, and the software high-speed machining speed, machining strength and machining accuracy can be used. For image processing, set the corresponding grid. After the adjustment is finished, output the border to determine the position of the workpiece on the table. Then place the workpiece. After the workpiece is placed, press the output (print) button in the software and wait. The laser engraving machine receives the file. After receiving the file, the engraving machine can press the start button to perform red light positioning (red light positioning: open the cover before the formal processing, press the start button to output the file, at this time, the laser tube does not emit laser light, can be observed The machining position is accurate to avoid the occurrence of waste due to positioning, and then press the start button to process.

  Precautions

(1) When using automatic focus measurement, be aware that the automatic focus bar must be tightened, otherwise the work surface will be pushed to the laser head and disengaged from the track.

(2) When the laser engraving machine is working, it is forbidden to open the cover (top cover and front cover), otherwise the laser emission will be stopped, which will affect the processing quality.

(3) When processing the workpiece, the smoke exhausting and blowing equipment must be opened to prevent the dust from contaminating the focusing lens and the reflecting lens, otherwise the lens will be focused and reflected, which will indirectly affect the processing strength and processing precision.

(4) When processing wood and paper workpieces, it is necessary to pay close attention to the processing speed and processing strength to avoid the flame being generated due to the excessively slow speed and high strength. The flame will damage the focusing lens, which will affect the processing strength and processing accuracy. The heavy machine will not be used.

(5) When the initial user performs irregular workpiece processing, it is necessary to first perform red light positioning to determine whether the processing position is accurate or not, otherwise it is easy to produce waste.

(6) When processing thin wood, cardboard and other easily deformable materials, the deformation amplitude should be adjusted so that the horizontal difference is less than 1 mm to avoid excessive focal length difference and affect the processing accuracy. When processing paper, fix the paper to avoid displacement during work. When cutting paper, especially soft paper (hair paper, raw paper), you can stack it 15-20 sheets first, soak it in water, level it, and then cut it. This increases work efficiency while avoiding the dangers of burning materials.

(7) When cutting, the workpiece should be placed more than 2 cm away from the work surface to avoid damage to the back of the workpiece after laser reflection, resulting in waste.

(8) Cleaning of the reflecting lens and the focusing lens: the two fingers pinch the reflecting lens, and the other hand uses the camera lens to clean the paper cleaning liquid, gently dragging the surface of the lens, prohibiting the finger from pressing the mirror surface to avoid scratching; or using a cotton swab Gently wipe the focus lens with the lens cleaning solution until it is clean.

(9) When carving vector files, the resolution should be higher (500dpi or 600dpi); when engraving the file, the resolution should be lower (500dpi rough mode or 300dpi). This carving will work well.