Exhaust system of laser marking device

Abstract

The utility model relates to an exhaust system of a laser marking device, and relates to the field of laser marking technology, the exhaust system comprises a rack, a gas collection cylinder is arranged on the rack in a lifting manner, the gas collection cylinder is erected above a continuous conveying device, and the top of the gas collection cylinder is provided with a processing port for laser penetration; a filter box is fixedly connected to the rack, an exhaust pipeline is mounted on the gas collection cylinder, and a gas outlet port of the exhaust pipeline is communicated with the filter box; the workpiece sensing module is fixedly mounted in the gas collecting cylinder and used for sensing a workpiece conveyed to the position below the laser marking device and outputting a workpiece sensing signal; the driving module is in signal connection with the workpiece sensing module and is used for receiving the workpiece sensing signal and driving the gas collecting cylinder to move towards the direction close to the workpiece; and the adsorption fan is in signal connection with the signal output end of the workpiece sensing module and is used for receiving the workpiece sensing signal and starting. According to the laser marking device, the situation that smoke dust in waste gas generated by laser marking forms dust accumulation in a workshop can be reduced.

Description

Technical Field

[0001] The present application relates to the field of laser marking technology, and in particular to an exhaust system for a laser marking device. Background Art

[0002] Laser marking devices are devices that use laser beams to permanently mark the surface of various materials. The effect of marking is to expose the deeper material through the evaporation of the surface material, or to "carve" traces through the chemical and physical changes of the surface material caused by light energy, or to burn part of the material through light energy to reveal the desired pattern or text.

[0003] Laser marking devices are mainly used in some occasions that require finer and higher precision, and can be applied to electronic components, integrated circuits, electrical appliances, mobile communications, hardware products, tool accessories, precision instruments, glasses and watches, jewelry, auto parts, plastic buttons, building materials, and PVC pipes. Common laser marking devices are usually used with continuous conveying devices such as conveyor belts to achieve continuous production and processing effects.

[0004] However, during the printing process of the laser marking device, the thermal energy of the laser burns or etches the marked object, forming text, patterns, marks, etc. on the surface of the marked object. The laser burning or etching the surface of the marked object will produce smoke, which diffuses in the workshop and causes inconvenience to the cleaning and sanitation of the workshop. There is room for improvement. Utility Model Content

[0005] In order to reduce the occurrence of waste gas generated by laser marking that diffuses in a workshop and causes inconvenience in workshop cleaning and hygiene, the present application provides an exhaust system for a laser marking device.

[0006] The exhaust system of a laser marking device provided in this application adopts the following technical solution:

[0007] A laser marking device exhaust system comprises a frame, a gas collecting cylinder is provided on the frame in a lifting manner, the gas collecting cylinder is arranged above a continuous conveying device, and a processing opening for laser penetration is provided on the top of the gas collecting cylinder;

[0008] A filter box is fixedly connected to the frame, an exhaust pipe is installed on the gas collecting cylinder, and an outlet port of the exhaust pipe is connected to the filter box; and:

[0009] A workpiece sensing module is fixedly installed in the gas collecting cylinder, and is used to sense the workpiece conveyed to the bottom of the laser marking device and output a workpiece sensing signal;

[0010] A driving module, fixedly mounted on the frame, with a driving end fixedly connected to the gas collecting cylinder, and a signal input end connected to the workpiece sensing module signal, for receiving the workpiece sensing signal and driving the gas collecting cylinder to move toward the direction close to the workpiece;

[0011] The adsorption fan is fixedly installed in the gas collecting cylinder, communicated with the exhaust duct, and connected with the signal output end of the workpiece sensing module for receiving the workpiece sensing signal and starting.

[0012] By adopting the above technical scheme, during the actual laser marking process, the continuous conveying device drives the workpiece to the bottom of the laser marking device and pauses for a set time. The workpiece sensing module in the gas collecting cylinder senses the workpiece and outputs a workpiece sensing signal. After receiving the workpiece sensing signal, the driving module drives the gas collecting hood to move to fit the surface of the continuous conveying device. At the same time, the adsorption fan is started. The exhaust gas generated during the laser marking process is adsorbed into the exhaust duct by the adsorption fan and is discharged after passing through the filter box. The technical effects of automatically sensing the workpiece, automatically driving the gas collecting hood, and automatically adsorbing and discharging the exhaust gas can be achieved. The exhaust gas is discharged after being filtered, which can reduce the smoke and dust carried in the exhaust gas from diffusing in the workshop and accumulating on the workshop equipment and the bottom surface, making it convenient for workshop operators to clean the workshop.

[0013] Preferably, the workpiece sensing module comprises:

[0014] An infrared distance measuring sensor is fixedly installed in the gas collecting cylinder, with the sensing end facing the continuous conveying device, and is used to detect the distance to the surface of the object directly below and output a sensing distance signal;

[0015] The single chip microcomputer has a signal input terminal connected to a signal output terminal of the infrared distance measuring sensor, and is used to receive and compare the sensing distance signal, and output the workpiece sensing signal when the sensing distance is less than a set value.

[0016] By adopting the above technical scheme, when there is no workpiece placed under the gas collecting cylinder, the sensing distance value measured by the infrared ranging sensor is relatively large. When the continuous conveying device conveys the workpiece to the bottom of the laser marking device, the distance between the surface of the workpiece and the infrared ranging sensor decreases. Through comparison by the single-chip microcomputer, it can be determined that the workpiece is conveyed to the bottom of the laser marking device and is ready for laser marking processing, thereby achieving the technical effect of automatic sensing of the workpiece.

[0017] Preferably, the driving module comprises a cylinder, a cylinder body of the cylinder is fixedly connected to the frame, and a cylinder shaft of the cylinder is fixedly connected to the outer side wall of the gas collecting cylinder.

[0018] By adopting the above technical solution, the cylinder extends or retracts the cylinder shaft, which can drive the air collecting cylinder fixedly connected to the cylinder shaft to rise and fall.

[0019] Preferably, a gas collecting cavity is formed inside the gas collecting cylinder, and the gas collecting cavity is arranged to expand outward in a downward direction.

[0020] By adopting the above technical solution, the outward expansion of the gas collecting cavity can improve the adsorption rate of the exhaust gas generated by laser marking and reduce the occurrence of exhaust gas escape.

[0021] Preferably, a metal filter screen, a medium-efficiency filter plate and a high-efficiency filter plate are detachably and fixedly connected in sequence in a downward direction in the filter box.

[0022] By adopting the above technical solution, the metal filter can block the smoke with larger particles, and the medium-efficiency filter plate and the high-efficiency filter plate can filter out the smoke with smaller particles.

[0023] In summary, the exhaust system of a laser marking device of the present application includes at least one of the following beneficial technical effects:

[0024] 1. Through the coordination and use of the infrared distance sensor, single-chip microcomputer, cylinder and adsorption fan, when the continuous conveying device conveys the workpiece to the bottom of the laser marking device, the infrared distance sensor measures a smaller sensing distance value, and the single-chip microcomputer compares it to achieve the technical effect of automatically sensing the workpiece. The single-chip microcomputer controls the cylinder to drive the gas collecting cylinder down to fit the surface of the continuous conveying device, and controls the adsorption fan to start at the same time, which can adsorb the exhaust gas generated during the laser marking process into the filter box and then discharge it after filtration, thereby reducing the dust in the exhaust gas from dispersing and accumulating in the workshop to form dust, and effectively improving the convenience of operators to clean and sanitation in the workshop;

[0025] 2. Through the combination and use of the metal filter, medium-efficiency filter plate and high-efficiency filter plate in the filter box, large and small particles of smoke in the flue gas can be filtered out to achieve a good filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram used in the embodiment of this application to show the overall structure of the exhaust system.

[0027] Figure 2 It is a schematic diagram used to illustrate the internal structure of the filter box in an embodiment of the present application.

[0028] Figure 3 It is a schematic diagram of an embodiment of the present application for demonstrating signal transmission inside an exhaust system.

[0029] Explanation of the reference numerals: 1. Frame; 2. Gas collecting cylinder; 21. Processing port; 22. Gas collecting chamber; 3. Filter box; 31. Metal filter; 32. Medium-efficiency filter plate; 33. High-efficiency filter plate; 34. Exhaust duct; 4. Adsorption fan; 5. Infrared ranging sensor; 6. Cylinder; 7. Laser marking device; 8. Continuous conveying device. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-3 This application is described in further detail.

[0031] Example

[0032] The present application embodiment discloses an exhaust system for a laser marking device. Figure 1 and Figure 3 It mainly includes a frame 1 installed on the body of the continuous conveying device 8, on which a gas collecting cylinder 2 is lifted and lowered, and the gas collecting cylinder 2 is erected above the continuous conveying device 8, and a processing opening 21 for laser penetration is opened on the top of the gas collecting cylinder 2.

[0033] A filter box 3 is fixedly connected to the frame 1 , an exhaust pipe 34 is installed on the gas collecting cylinder 2 , and an exhaust port of the exhaust pipe 34 is connected to the filter box 3 .

[0034] And: a workpiece sensing module, fixedly installed in the gas collecting cylinder 2, used to sense the workpiece transported to the bottom of the laser marking device 7 and output a workpiece sensing signal; a driving module, fixedly installed on the frame 1, the driving end is fixedly connected to the gas collecting cylinder 2, and the signal input end is connected to the workpiece sensing module signal, used to receive the workpiece sensing signal and drive the gas collecting cylinder 2 to move in the direction close to the workpiece; an adsorption fan 4, fixedly installed in the gas collecting cylinder 2, connected to the exhaust duct 34, and connected to the signal output end of the workpiece sensing module signal, used to receive the workpiece sensing signal and start.

[0035] During the actual laser marking process, the continuous conveying device 8 drives the workpiece to the bottom of the laser marking device 7 and pauses for a set period of time. The workpiece sensing module in the gas collecting cylinder 2 senses the workpiece and outputs a workpiece sensing signal. After receiving the workpiece sensing signal, the driving module drives the gas collecting hood to move to fit the surface of the continuous conveying device 8.

[0036] At the same time, the adsorption fan 4 is started, and the exhaust gas generated in the laser marking process is adsorbed to the exhaust duct 34 by the adsorption fan 4 and discharged after passing through the filter box 3, which can realize the technical effects of automatically sensing the workpiece, automatically driving the gas collecting hood, and automatically adsorbing and discharging the exhaust gas. The exhaust gas is discharged after being filtered, which can reduce the smoke and dust carried in the exhaust gas from diffusing in the workshop and accumulating on the workshop equipment and the ground, making it convenient for workshop operators to clean the workshop.

[0037] Reference Figure 1and Figure 3 The workpiece sensing module includes: an infrared distance sensor 5, which is fixedly installed in the gas collecting cylinder 2, with the sensing end arranged toward the continuous conveying device 8, for detecting the distance to the surface of the object directly below and outputting a sensing distance signal; a single chip microcomputer, whose signal input end is connected to the signal output end of the infrared distance sensor 5, for receiving and comparing the sensing distance signal, and outputting a workpiece sensing signal when the sensing distance is less than a set value.

[0038] When there is no workpiece placed under the gas collecting cylinder 2, the sensing distance value measured by the infrared ranging sensor 5 is relatively large. When the continuous conveying device 8 conveys the workpiece to the bottom of the laser marking device 7, the distance between the surface of the workpiece and the infrared ranging sensor 5 decreases. Through the comparison of the single-chip microcomputer, it can be determined that the workpiece is conveyed to the bottom of the laser marking device 7 and is ready for laser marking processing, thereby achieving the technical effect of automatic sensing of the workpiece.

[0039] In the embodiment of the present application, the driving module is a cylinder 6, the cylinder body of the cylinder 6 is fixedly connected to the frame 1, and the cylinder 6 axis of the cylinder 6 is fixedly connected to the outer wall of the gas collecting cylinder 2. The cylinder 6 extends or retracts the cylinder 6 axis, which can drive the gas collecting cylinder 2 fixedly connected to the cylinder 6 axis to rise and fall.

[0040] Reference Figure 1 A gas collecting chamber 22 is formed inside the gas collecting cylinder 2, and the gas collecting chamber 22 is arranged to expand outward in the downward direction. The gas collecting chamber 22 is arranged to expand outward to improve the adsorption rate of the waste gas generated by laser marking and reduce the occurrence of waste gas escape.

[0041] Reference Figure 2 In the embodiment of the present application, the filter box 3 is detachably fixedly connected with a metal filter 31, a medium-efficiency filter plate 32 and a high-efficiency filter plate 33 in the downward direction. The metal filter 31 can block the smoke with larger particles, and the medium-efficiency filter plate 32 and the high-efficiency filter plate 33 can filter out the smoke with smaller particles.

[0042] The implementation principle of the exhaust system of a laser marking device in the embodiment of the present application is as follows: through the mutual coordination and use of the infrared ranging sensor 5, the single-chip microcomputer, the cylinder 6 and the adsorption fan 4, when the continuous conveying device 8 conveys the workpiece to the bottom of the laser marking device 7, the infrared ranging sensor 5 measures a smaller sensing distance value, and the single-chip microcomputer compares it to achieve the technical effect of automatically sensing the workpiece. The single-chip microcomputer controls the cylinder 6 to drive the gas collecting cylinder 2 to descend to fit with the surface of the continuous conveying device 8, and at the same time controls the adsorption fan 4 to start, so that the exhaust gas generated during the laser marking process can be adsorbed into the filter box 3 and discharged after filtration, thereby reducing the dust in the exhaust gas from being dispersed and accumulated in the workshop to form dust, and effectively improving the convenience of cleaning and sanitation for operators in the workshop.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A laser marking device exhaust system, characterized in that: It comprises a frame (1), on which a gas collecting cylinder (2) is arranged in a lifting manner, the gas collecting cylinder (2) is erected above a continuous conveying device (8), and a processing opening (21) for laser penetration is opened on the top of the gas collecting cylinder (2); The frame (1) is fixedly connected with a filter box (3), the gas collecting cylinder (2) is equipped with an exhaust pipe (34), and the exhaust port of the exhaust pipe (34) is connected with the filter box (3); and: A workpiece sensing module, fixedly mounted in the gas collecting cylinder (2), for sensing the workpiece transported to the bottom of the laser marking device (7) and outputting a workpiece sensing signal; A drive module, fixedly mounted on the frame (1), with a drive end fixedly connected to the gas collecting cylinder (2), and a signal input end connected to the workpiece sensing module signal, for receiving the workpiece sensing signal and driving the gas collecting cylinder (2) to move in a direction close to the workpiece; The adsorption fan (4) is fixedly installed in the gas collecting cylinder (2), communicated with the exhaust pipe (34), and connected to the signal output end of the workpiece sensing module, and is used to receive the workpiece sensing signal and start.

2. The exhaust system of a laser marking device according to claim 1, characterized in that: The workpiece sensing module comprises: An infrared distance measuring sensor (5) is fixedly installed in the gas collecting cylinder (2), with its sensing end facing the continuous conveying device (8), and is used to detect the distance to the surface of the object directly below and output a sensing distance signal; The single chip microcomputer has a signal input end connected to a signal output end of the infrared distance measuring sensor (5) and is used to receive and compare the sensing distance signal and output the workpiece sensing signal when the sensing distance is less than a set value.

3. The exhaust system of a laser marking device according to claim 2, characterized in that: The driving module comprises a cylinder (6), a cylinder body of the cylinder (6) being fixedly connected to the frame (1), and a cylinder (6) axis of the cylinder (6) being fixedly connected to the outer side wall of the gas collecting cylinder (2).

4. The exhaust system of a laser marking device according to claim 3, characterized in that: A gas collecting chamber (22) is formed inside the gas collecting cylinder (2), and the gas collecting chamber (22) is arranged in an outwardly expanding shape in a downward direction.

5. The exhaust system of a laser marking device according to claim 4, characterized in that: The filter box (3) is provided with a metal filter screen (31), a medium-efficiency filter plate (32) and a high-efficiency filter plate (33) which are detachably and fixedly connected in sequence in a downward direction.

Images