A laser coding machine smoke filtering device

Abstract

The application relates to the technical field of code marking machines, in particular to a laser code marking machine smoke dust filtering device, which comprises an outer box used for filling filtering liquid, the top of the outer box is provided with an air inlet pipe and an air outlet pipe, one end of which is movably extended into the inner part of the outer box, and a smoke dust conveying assembly is arranged in the inner part of the outer box; the smoke dust conveying assembly comprises an arc-shaped plate fixedly connected with the inner wall of the outer box, a cylinder which is rotatably connected between the two sides of the inner wall of the outer box and slides with the arc-shaped plate, one end of the air inlet pipe penetrates through the arc-shaped plate, a plurality of grooves are formed in the outer side of the cylinder, and an inclined groove for guiding the filtering liquid in the grooves to be discharged is formed in one side of the grooves. The smoke dust is directly sent into the filtering liquid for filtering, the filtering liquid needs to be pushed to move a distance from the air inlet pipe, part of the power of the air extraction equipment is used for pushing the filtering liquid, the power for extracting the smoke dust at the air inlet is reduced, the filtering range of the air extraction equipment is reduced, and the filtering effect of the smoke dust is poor.

Description

Technical Field

[0001] This invention relates to the field of coding machine technology, specifically to a dust filtration device for a laser coding machine. Background Technology

[0002] Laser marking machines use lasers to instantly vaporize and form marks on the surface of objects. However, the lasers generate exhaust fumes when they hit the product surface. These fumes can cause discomfort to workers, so dust filtration equipment is usually installed in the laser marking area.

[0003] A search revealed that patent application number CN202221236053.X discloses a smoke filtration device and a laser marking device thereon. The air inlet pipe extends into the water tank and is located below the liquid surface, allowing smoke to enter the filter liquid through the air inlet pipe. After the smoke is purified by the filter liquid, it is discharged from the water tank, which can effectively purify the smoke, and the cost of smoke purification is low.

[0004] However, when the intake pipe is inserted into a shallow portion of the water tank, the exhaust gas only comes into contact with the shallowest layer of the filter liquid before flowing to the surface. This results in a short filtration time for the dust particles, and in cases where the dust particles are large, some in the middle may not come into contact with the filter liquid before being discharged, leading to incomplete filtration. As the intake pipe extends deeper into the filter liquid, the length of the filter liquid entering the pipe increases. The dust particles need to push a longer distance of filter liquid from inside the intake pipe to the outside before being discharged into the filter liquid for filtration. This causes some of the power of the extraction equipment to be used to push the filter liquid, ultimately reducing the power to draw in dust particles at the intake port. Consequently, the range of dust filtration by the extraction equipment is reduced, resulting in poor filtration efficiency. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a dust filtration device for laser marking machines. This device solves the problem that directly feeding dust into the filtration liquid requires pushing the filtration liquid a certain distance from the air inlet pipe, causing part of the power of the suction equipment to be used to push the filtration liquid. This reduces the power of the suction equipment to draw in dust at the air inlet, thereby reducing the range of dust filtration and resulting in poor dust filtration efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a dust filtration device for a laser marking machine, comprising an outer casing for filling with filtrate, wherein an air inlet pipe and an exhaust pipe are provided on the top of the outer casing and extend movably into the interior therein, and a dust conveying assembly is installed inside the outer casing.

[0007] The dust conveying assembly includes an arc-shaped plate fixedly connected to the inner wall of the outer casing, a cylinder rotatably connected between the two sides of the inner wall of the outer casing and sliding with the arc-shaped plate, one end of the air inlet pipe penetrating through the arc-shaped plate, multiple grooves opened on the outer side of the cylinder, an inclined groove opened on one side of the groove for guiding the discharge of the internal filtrate, a motor for driving the cylinder to rotate fixedly connected to one side of the outer casing, and an exhaust fan installed at the end of the air inlet pipe near the arc-shaped plate.

[0008] Preferably, a base is fixedly connected to the bottom inner side of the outer box, and multiple sponge strips for cleaning the cylindrical surface are installed on the top of the base, with multiple perforations on one side of the sponge strips.

[0009] Preferably, the top of the base is provided with a groove, and multiple sliders are slidably connected to the bottom of the inner side of the groove. An elastic rope is fixedly connected between two adjacent sliders, and a sponge strip is installed on the top of the multiple sliders.

[0010] Preferably, the top of the base is provided with two limiting frames, one end of which extends movably into the inside of the groove, and one of the sliders is inserted into the inside of the limiting frame. A longitudinal groove for the elastic rope to pass through is provided on one side of the limiting frame.

[0011] Preferably, the limiting frame has a threaded rod on the side away from the elastic rope, with one end extending movably to the outside of the base, and an elliptical block is fixedly connected to the end of the threaded rod away from the base.

[0012] Preferably, a cover plate is installed on the top of the outer casing, and a handle is fixedly connected to the top of the cover plate, with the air intake pipe passing through the cover plate.

[0013] Preferably, the height of the highest point of the arc-shaped plate is D1, the chord length of the arc-shaped plate is L1, the liquid level of the filtrate inside the outer casing is D2, and the total chord length of the groove and the inclined groove is L2, satisfying the following relationship:

[0014] D1 > D2;

[0015] L1 > 2L2.

[0016] Preferably, the cylinder has an elliptical groove inside, and a counterweight column is slidably connected to the inner wall of the elliptical groove.

[0017] Compared with the prior art, the present invention provides a dust filtration device for a laser marking machine, which has the following beneficial effects:

[0018] 1. The exhaust fan draws all the air around the laser marking into the intake pipe, and the motor drives the cylinder to send the smoke and dust to the bottom of the filtrate. This increases the time that the smoke and dust are filtered through the filtrate. The two stages of air extraction and smoke and dust delivery to the bottom of the filtrate are separated. When the air extraction equipment sends the smoke and dust into the filtrate, it does not need to push away the filtrate inside the intake pipe. This ensures that the power of the air extraction equipment is used entirely for drawing in the smoke and dust, ensuring the power of drawing in the smoke and dust at the air inlet and the range of smoke and dust filtration, thus improving the filtration effect of the smoke and dust.

[0019] 2. The sponge strips, due to their elasticity, enter the groove and rub against the bottom of the cylinder. This reduces the volume of bubbles generated when the dust passes through the filter liquid while cleaning the inside of the flue gas filtration equipment. This reduces the problem of large bubbles and loud noise when they burst after the dust passes through the filter liquid, thus lowering the noise of the dust filtration process.

[0020] 3. By pulling the slider away from the set limit frame, the slider will stretch and deform the elastic rope until the sponge strip reaches its maximum length after straightening. The length of the sponge strip can be adjusted as needed to adapt to grooves of different sizes and widths for cleaning. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is an internal cross-sectional view of the entire invention;

[0024] Figure 3 This is a schematic diagram of the internal components of the outer casing of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure at the connection between the air intake pipe and the arc plate of the present invention;

[0026] Figure 5 This is an internal cross-sectional view of the cylinder of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of the base and the sponge strip of the present invention;

[0028] Figure 7 This is a schematic diagram of the bottom and slider structure of the present invention;

[0029] Figure 8 This is a schematic diagram of the connection between the limiting frame and the sponge strip of the present invention.

[0030] In the diagram: 1. Outer casing; 2. Cover plate; 3. Air inlet pipe; 4. Smoke and dust conveying assembly; 41. Arc plate; 42. Cylinder; 43. Motor; 44. Exhaust fan; 5. Base; 6. Sponge strip; 7. Slider; 8. Elastic rope; 9. Limiting frame; 10. Threaded rod; 11. Elliptical block; 12. Exhaust pipe; 13. Counterweight column. Detailed Implementation

[0031] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0032] Example 1

[0033] Figures 1-6 In one embodiment of the present invention, a dust filtration device for a laser marking machine includes an outer casing 1 for filling with a filter liquid. The top of the outer casing 1 is provided with an air inlet pipe 3 and an exhaust pipe 12, one end of which extends movably into the interior. A dust conveying assembly 4 is installed inside the outer casing 1. The outer casing 1 is placed near the laser marking location. Then, the air inlet pipe 3 is moved, with the end of the air inlet pipe 3 furthest from the outer casing 1 moved to the side of the laser marking location. The dust conveying assembly 4 is then activated, conveying the dust generated by the laser marking into the interior of the outer casing 1. There, the dust comes into contact with the filter liquid inside the outer casing 1 and is filtered. Finally, the dust is mixed into the filter liquid. Air rises above the filter liquid and is discharged from the exhaust pipe 12, completing the dust filtration process generated by the laser marking. Using the filter liquid as the filter medium is cost-effective and does not require frequent replacement of the filter material.

[0034] The dust conveying assembly 4 includes an arc-shaped plate 41 fixedly connected to the inner wall of the outer casing 1. A cylinder 42, which slides on the arc-shaped plate 41, is rotatably connected between the two sides of the inner wall of the outer casing 1. One end of the air inlet pipe 3 passes through the arc-shaped plate 41. Multiple grooves are formed on the outer side of the cylinder 42. An inclined groove is formed on one side of the groove to guide the discharge of the internal filtrate. A motor 43 for driving the cylinder 42 to rotate is fixedly connected to one side of the outer casing 1. An exhaust fan 44 is installed at the end of the air inlet pipe 3 near the arc-shaped plate 41. A cover plate 2 is installed on the top of the outer casing 1. A handle is fixedly connected to the top of the cover plate 2. The air inlet pipe 3 passes through the cover plate 2. Moving the cover plate 2 upward causes it to rise along the air inlet pipe 3, pouring filtrate into the outer casing 1. The height of the filtrate is lower than the highest point of the arc-shaped plate 41. Then, the cover plate 2 is moved downwards until it covers the outer casing 1. The end of the air inlet pipe 3 away from the outer casing 1 is moved to the side of the laser marking. When laser printing begins, the exhaust fan 44 and motor 43 are started. The exhaust fan 44 draws all the air around the laser marking into the air inlet pipe 3 and then sends it to the arc plate 41. The motor 43 drives the cylinder 42 to rotate counterclockwise. When the groove moves from the liquid level of the filtrate to the highest point, the filtrate inside the groove gradually flows out from the inclined groove until the groove and the inclined groove rotate to the highest point with the cylinder 42. The filtrate inside the groove flows out completely and mixes with the filtrate below. Then, the groove at the highest point continues to rotate and fits against the arc plate 41. During the process of the groove rotating downwards from the highest point, the side is blocked by the arc plate 41, and the filtrate... Unable to enter the groove near the side of the arc plate 41, until the groove and inclined slot are completely blocked by the arc plate 41, the groove has not yet moved to the air intake pipe 3 to connect with it. The motor 43 drives the cylinder 42 to continue rotating until the air intake pipe 3 connects with the groove and inclined slot. The exhaust fan 44 sends the smoke and dust inside the air intake pipe 3 into the groove and inclined slot. As the motor 43 drives the cylinder 42, groove and inclined slot to continue rotating, the groove and inclined slot gradually move to the lowest point and no longer contact the arc plate 41. After the groove and inclined slot are no longer blocked by the arc plate 41, the smoke and dust inside them enter the bottom of the outer box 1. The filter liquid inside the outer box 1 enters the groove and inclined slot. With the rotation of the cylinder 42, the smoke and dust inside the air intake pipe 3 are continuously sent into the outer box 1. The bottom layer filters the filtrate, and the dust mixes into the filtrate. Air passes through the filtrate and moves to the surface before being discharged from the exhaust pipe 12. To accelerate the filtration process, both the exhaust fan 44 and the motor 43 can be increased simultaneously. This separates the extraction and dust delivery stages. The extraction device does not need to push away the filtrate inside the inlet pipe 3 when sending the dust into the filtrate, ensuring that all the power of the extraction device is used for dust extraction. This guarantees sufficient power for dust extraction at the inlet and maximizes the filtration range, improving the filtration effect. The process continues until the groove and inclined trough rotate to their highest point again, at which point the filtrate is discharged again, and this process is repeated.It can continuously send the smoke and dust in the intake pipe 3 to the bottom of the filter liquid for filtration.

[0035] When the filtration of smoke and dust is complete and the filter needs to be replaced and the outer casing 1 needs to be cleaned, open the cover 2, pour out the filter inside the outer casing 1, then rinse the inside of the outer casing 1 with clean water, finally pour out the water inside the outer casing 1, and then pour clean filter into the outer casing 1 again.

[0036] A base 5 is fixedly connected to the bottom inner side of the outer casing 1. Multiple sponge strips 6 for cleaning the surface of the cylinder 42 are installed on the top of the base 5. Multiple perforations are opened on one side of the sponge strips 6. Initially, the sponge strips 6 are squeezed and bent by the cylinder 42. During the rotation of the cylinder 42, the sponge strips 6 rub against the bottom of the cylinder 42, achieving the effect of cleaning the internal parts of the dust filtration equipment. When the groove and the inclined groove move to the sponge strip 6, the sponge strip 6 enters the groove due to its own elasticity. The dust inside the groove and the inclined groove is dispersed and diffused in all directions after being impacted by the sponge strip 6. Some dust passes through the perforations on the sponge strip 6 and forms small volume bubbles. This can reduce the volume of bubbles generated when the dust passes through the filter liquid while cleaning the inside of the flue gas filtration equipment, thereby reducing the problem of large bubble volume and loud noise when the dust breaks after passing through the filter liquid, and reducing the noise of dust filtration.

[0037] The height of the highest point of the arc plate 41 is D1, the chord length of the arc plate 41 is L1, the liquid level of the filtrate inside the outer casing 1 is D2, and the total chord length of the groove and the inclined groove is L2, satisfying the following relationship:

[0038] D1 > D2;

[0039] L1 > 2L2. The height of the filtrate inside the outer casing 1 is lower than the height of the highest point of the arc plate 41. This allows the filtrate inside the groove to be discharged downwards along the inclined groove when the groove is moved to its highest point. The total chord length of the groove and the inclined groove is shorter than half the chord length of the arc plate 41. This ensures that when one of the grooves and the arc groove is completely covered by the arc plate 41, the groove is not yet connected to the air intake pipe 3. This prevents the dust inside the air intake pipe 3 from being discharged upwards through the groove and the inclined groove, ensuring that the dust can be filtered by the filtrate.

[0040] Example 2

[0041] Reference Figures 1-8Based on Embodiment 1, the top of the base 5 is provided with a groove, and multiple sliders 7 are slidably connected to the bottom of the inner side of the groove. An elastic rope 8 is fixedly connected between two adjacent sliders 7. A sponge strip 6 is installed on the top of the multiple sliders 7. The top of the base 5 is provided with two limiting frames 9, one end of which extends movably into the groove. One slider 7 is placed inside the limiting frame 9. A longitudinal groove for the elastic rope 8 to pass through is provided on one side of the limiting frame 9. A threaded rod 10 is provided on the side of the limiting frame 9 away from the elastic rope 8, one end of which extends movably into the outside of the base 5. An elliptical block 11 is fixedly connected to the end of the threaded rod 10 away from the base 5. When it is necessary to stretch the sea When adjusting the length of the sponge strip 6, the worker holds the elliptical block 11 and rotates the threaded rod 10, which in turn pushes the limiting frame 9 to move along the groove of the base 5. The limiting frame 9 pulls the slider 7 away from the base, and the slider 7 stretches and deforms the elastic rope 8 until the sponge strip 6 reaches its maximum length after straightening. When it is necessary to shorten the length of the sponge strip 6, the worker rotates the threaded rod 10 in the opposite direction and pushes the two limiting frames 9 closer together. Due to its own elasticity, the elastic rope 8 pulls the slider 7 closer together, which in turn pushes the sponge strip 6 closer and bends it. At this time, the length of the sponge strip 6 is shortened. The length of the sponge strip 6 can be adjusted as needed to adapt to the cleaning of grooves of different sizes and widths.

[0042] The cylinder 42 has an elliptical groove inside, and a counterweight column 13 is slidably connected to the inner wall of the elliptical groove. During the rotation of the cylinder 42, the counterweight column 13 always slides close to the bottom of the inner side of the elliptical groove due to its own weight. The collision between the counterweight column 13 and the inner wall of the cylinder 42 generates vibration, causing impurities attached to the surface of the cylinder 42 to fall off. Vibration can be used to clean some impurities on the surface of the cylinder 42, reducing the difficulty of cleaning impurities on the surface of the cylinder 42 by the sponge strip 6.

[0043] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.

[0044] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dust filtration device for a laser marking machine, comprising an outer casing (1) for filling with filtrate, characterized in that: The top of the outer casing (1) is provided with an air inlet pipe (3) and an exhaust pipe (12) that extend movably into its interior. The interior of the outer casing (1) is equipped with a dust conveying assembly (4). The dust conveying assembly (4) includes an arc plate (41) fixedly connected to the inner wall of the outer casing (1), a cylinder (42) rotatably connected between the two sides of the inner wall of the outer casing (1) and sliding with the arc plate (41), one end of the air inlet pipe (3) passing through the arc plate (41), multiple grooves opened on the outer side of the cylinder (42), an inclined groove opened on one side of the groove for guiding the discharge of the internal filtrate, a motor (43) fixedly connected to one side of the outer casing (1) for driving the cylinder (42) to rotate, and an exhaust fan (44) installed at one end of the air inlet pipe (3) near the arc plate (41). The height of the highest point of the arc plate (41) is D1, the chord length of the arc plate (41) is L1, the liquid level of the filtrate inside the outer box (1) is D2, and the total chord length of the groove and the inclined groove is L2, satisfying the following relationship: D1 > D2; L1 > 2L2.

2. The dust filtration device for a laser marking machine according to claim 1, characterized in that: The bottom inner side of the outer box (1) is fixedly connected to a base (5), and a number of sponge strips (6) for cleaning the surface of the cylinder (42) are installed on the top of the base (5). A number of perforations are opened on one side of the sponge strips (6).

3. The dust filtration device for a laser marking machine according to claim 2, characterized in that: The base (5) has a groove on its top, and multiple sliders (7) are slidably connected to the bottom of the inner side of the groove. An elastic rope (8) is fixedly connected between two adjacent sliders (7), and a sponge strip (6) is installed on the top of the multiple sliders (7).

4. The dust filtration device for a laser marking machine according to claim 3, characterized in that: The top of the base (5) is provided with two limiting frames (9) with one end extending into the groove. One of the sliders (7) is placed inside the limiting frame (9). A longitudinal groove for the elastic rope (8) to pass through is provided on one side of the limiting frame (9).

5. The dust filtration device for a laser marking machine according to claim 4, characterized in that: The limiting frame (9) is provided with a threaded rod (10) on the side away from the elastic rope (8), one end of which extends movably to the outside of the base (5). An elliptical block (11) is fixedly connected to the end of the threaded rod (10) away from the base (5).

6. The dust filtration device for a laser marking machine according to claim 1, characterized in that: The top of the outer casing (1) is fitted with a cover plate (2), and a handle is fixedly connected to the top of the cover plate (2). The air inlet pipe (3) passes through the cover plate (2).

7. The dust filtration device for a laser marking machine according to claim 1, characterized in that: The cylinder (42) has an elliptical groove inside, and a counterweight column (13) is slidably connected to the inner wall of the elliptical groove.

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