Dust collecting mechanism for laser welding

Abstract

The utility model relates to the technical field of laser welding, in particular to a dust collection mechanism for laser welding, which comprises a bottom plate and a dust collection mechanism, a welding mechanism is arranged at the center of the bottom plate, the dust collection mechanism is positioned above the welding mechanism and comprises a dust collection structure and a filter structure, a dust collection cylinder is arranged at the upper end of a connecting plate, and an arc-shaped filter screen is arranged in a chute. And a cleaning structure is arranged in the dust collection cylinder. The device has the beneficial effects that smoke dust is filtered and discharged through the dust collection structure, when one filter screen is blocked, the air inlet direction is changed to enable the other filter screen to work, then the cleaning structure is used for pulling the filter screens, the filter screens deform and break away from pulling of the filter screens, and the filter screens are reset through elastic potential energy of the filter screens; the elastic force generated during deformation of the filter screens bounces off impurities on the surfaces of the filter screens, the impurities on the filter screens are cleaned, and the two filter screens are switched back and forth for use, so that the filtering efficiency of the filter screens is improved, and the replacement frequency of the filter screens is reduced.

Description

Technical Field

[0001] This utility model relates to the field of laser welding technology, and in particular to a dust collection mechanism for laser welding. Background Technology

[0002] Laser welding uses high-energy laser pulses to locally heat materials in a small area. The energy of the laser radiation diffuses into the interior of the material through heat conduction, melting the material to form a specific molten pool. During the welding process, laser welding machines generate a large amount of smoke and dust, which pollutes the environment and harms the health of operators. Therefore, appropriate dust collection devices are needed to adsorb and filter the smoke and dust.

[0003] By comparing a dust collection box for a laser welding machine with patent publication number CN222608353U, it can be seen that in this solution, the exhaust fan inside the exhaust sleeve rotates at high speed, and the exhaust hole at the bottom of the conical exhaust hood can draw the fumes generated during the laser welding process into the exhaust collection sleeve. However, during the continuous adsorption of fumes, small particulate impurities in the fumes may eventually clog the activated carbon adsorption plate, thereby reducing its filtration efficiency. This requires repeated cleaning and replacement of the activated carbon adsorption plate, increasing the replacement frequency of the activated carbon adsorption plate. Utility Model Content

[0004] The purpose of this invention is to provide a dust collection mechanism for laser welding in order to solve the above-mentioned problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A dust collection mechanism for laser welding includes a base plate, a welding mechanism is disposed at the center of the base plate, and a dust collection mechanism for absorbing and filtering the fumes generated during welding, the dust collection mechanism being located above the welding mechanism.

[0007] The dust collection mechanism includes a dust collection structure for adsorbing smoke and dust, and a filtration structure for filtering the adsorbed and collected smoke and dust.

[0008] The filter structure includes a support frame set above the base plate, a connecting plate fixed to the front of the support frame, a dust collection cylinder at the upper end of the connecting plate, two symmetrically arranged sliding grooves above the dust collection cylinder, an arc-shaped filter screen inside the sliding grooves, a fixing frame fixed to the side wall of the dust collection cylinder near the filter screen, multiple exhaust fans rotatably installed inside the fixing frame, and a cleaning structure inside the dust collection cylinder for cleaning impurities on the surface of the filter screen.

[0009] Preferred: The cleaning structure includes a rotating shaft rotatably disposed at the center of the dust collection cylinder, a rotary motor mounted on the rotating end of the rotating shaft, the output end of the rotary motor being fixed to the rotating end of the rotating shaft via a coupling, a dividing plate fixed to the upper end of the slide groove, an upper mounting plate mounted on the lower end of the dividing plate, the upper mounting plate and the dividing plate being connected by bolts, a fixing plate fixed to the lower end of the slide groove, a lower mounting plate slidably mounted on the side wall of the fixing plate, a filter screen mounted between the lower mounting plate and the upper mounting plate, the filter screen being elastic, an upper limit plate fixed to the upper end of the fixing plate, and a lower limit plate fixed to the lower end of the lower mounting plate;

[0010] Two baffles are fixed on the surface of the rotating shaft and arranged symmetrically in the front-back direction. A scraper is slidably installed on the end of the baffle near the inner wall of the dust collection cylinder. The end of the scraper near the inner wall of the dust collection cylinder is in contact with the inner wall of the dust collection cylinder. A compression spring is connected between the scraper and the baffle. A partition is fixed at the top of the rotating shaft. The top of the partition is in contact with the inner wall of the dust collection cylinder. Limiting blocks are provided at the lower end of the upper mounting plate and the limiting blocks are fixed to the dust collection cylinder.

[0011] Preferred: The dust collection structure includes an air extraction box rotatably mounted at the rear end of the connecting plate. An adjustment motor is installed at the rotating end of the air extraction box. The output end of the adjustment motor is fixed to the rotating end of the air extraction box via a coupling. An air outlet box is fixed at the top of the dust collection cylinder. An air extraction pipe is connected between the rear end of the air outlet box and the air extraction box. The air extraction pipe is a telescopic flexible hose. Multiple air extraction heads are fixed at the lower end of the air extraction box.

[0012] Preferably, the welding mechanism includes a welding table set at the center of the base plate, a slide rail fixed at the upper end of the support frame, a lead screw rotatably installed inside the slide rail, a moving motor installed at the rotating end of the lead screw, the output end of the moving motor being fixed to the rotating end of the lead screw via a coupling, a sliding seat slidably installed inside the slide rail, a welding gun installed at the lower end of the sliding seat, and the sliding seat being threadedly connected to the lead screw.

[0013] Preferably, a baffle is fixed on the inner wall of the fixed frame near the filter screen, and two guide plates are fixed below the partition, which are symmetrically arranged in the front-back direction and are arc-shaped.

[0014] Preferred configuration: The baffle is recessed at the center and has two covers symmetrically arranged along the front-rear direction that are slidably installed at the front end of the dust collection cylinder.

[0015] Preferably, the exhaust fan has a protective cover on its upper side, and the protective cover is fixedly connected to the fixed frame.

[0016] Compared with existing technologies, the beneficial effects are as follows:

[0017] The dust generated during welding is collected in a dust collection cylinder by a suction structure, and then filtered out by an internal filter. When one filter becomes clogged, the airflow direction is changed to activate the other filter. A cleaning structure then pulls the filter, causing it to deform. After the filter is released from the pull, it returns to its original position using its own elastic potential energy. The elastic force generated during deformation causes impurities on the filter's surface to fall off, thus cleaning the filter. By switching between the two filters, the filtration efficiency is improved, and the frequency of filter replacement is reduced. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional spatial view of a dust collection mechanism for laser welding as described in this utility model;

[0020] Figure 2 This is a schematic diagram of the welding mechanism of the dust collection mechanism for laser welding described in this utility model;

[0021] Figure 3 This is a schematic diagram of the dust collection mechanism of the dust collection mechanism for laser welding described in this utility model;

[0022] Figure 4 This is a cross-sectional view of the internal structure of the dust collection cylinder of the dust collection mechanism for laser welding described in this utility model;

[0023] Figure 5 yes Figure 4 A magnified view of a section at point A in the middle;

[0024] Figure 6 yes Figure 4 A magnified view of a section at point B in the middle;

[0025] Figure 7 This is a schematic diagram of the outer side of the dust collection cylinder of a dust collection mechanism for laser welding as described in this utility model.

[0026] The annotations in the attached figures are explained as follows:

[0027] 100. Base plate; 201. Support frame; 202. Connecting plate; 203. Dust collection cylinder; 204. Exhaust box; 205. Adjusting motor; 206. Exhaust pipe; 207. Exhaust box; 208. Rotating shaft; 209. Baffle; 210. Partition plate; 211. Guide plate; 212. Upper mounting plate; 213. Filter screen; 214. Fixing plate; 215. Lower mounting plate; 216. Scraper; 217. Lower limit plate; 218. Upper limit plate; 219. Fixing frame; 220. Baffle column; 221. Exhaust fan; 222. Limiting block; 223. Slide groove; 224. Protective cover; 225. Dividing plate; 226. Rotary motor; 301. Welding table; 302. Slide rail; 303. Moving motor; 304. Lead screw; 305. Sliding seat; 306. Welding torch. Detailed Implementation

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The present invention will be further described below with reference to the accompanying drawings:

[0030] like Figures 1-7 As shown, a dust collection mechanism for laser welding includes a base plate 100, a welding mechanism for laser welding workpieces, the welding mechanism being located at the center of the base plate 100, and a dust collection mechanism for absorbing and filtering the fumes generated during welding, the dust collection mechanism being located above the welding mechanism.

[0031] In this embodiment, the dust collection mechanism includes a dust collection structure for adsorbing smoke and dust, and a filter structure for filtering the adsorbed and collected smoke and dust.

[0032] The filter structure includes a support frame 201 mounted on the base plate 100. A connecting plate 202 is fixed to the front of the support frame 201. A dust collection cylinder 203 is mounted on the upper end of the connecting plate 202. Two symmetrically arranged sliding grooves 223 are opened above the dust collection cylinder 203. An arc-shaped filter screen 213 is installed in the sliding grooves 223. A fixing frame 219 is fixed on the side wall of the dust collection cylinder 203 near the filter screen 213. Multiple exhaust fans 221 are rotatably installed in the fixing frame 219. A protective cover 224 is provided on the upper side of the exhaust fan 221. The protective cover 224 is fixedly connected to the fixing frame 219. A cleaning structure is provided inside the dust collection cylinder 203 for cleaning impurities on the surface of the filter screen 213.

[0033] The cleaning structure includes a rotating shaft 208 rotatably positioned at the center of the dust collection cylinder 203. A rotary motor 226 is mounted on the rotating end of the rotating shaft 208, and the output end of the rotary motor 226 is fixed to the rotating end of the rotating shaft 208 via a coupling. A dividing plate 225 is fixed to the upper end of the slide groove 223, and an upper mounting plate 212 is mounted on the lower end of the dividing plate 225. The upper mounting plate 212 and the dividing plate 225 are connected by bolts. A fixing plate 214 is fixed to the lower end of the slide groove 223, and a lower mounting plate 215 is slidably mounted on the side wall of the fixing plate 214. A filter screen 213 is installed between the lower mounting plate 215 and the upper mounting plate 212. The filter screen 213 is elastic. An upper limit plate 218 is fixed to the upper end of the fixing plate 214, and a lower limit plate 217 is fixed to the lower end of the lower mounting plate 215.

[0034] Two baffles 209 are fixed on the surface of the rotating shaft 208, symmetrically arranged in the front-back direction. The center of the baffles 209 is concave downward. A scraper 216 is slidably installed on one end of the baffles 209 near the inner wall of the dust collection cylinder 203. The scraper 216 is in contact with the inner wall of the dust collection cylinder 203 at one end. A compression spring is connected between the scraper 216 and the baffles 209. A partition 210 is fixed at the top of the rotating shaft 208. The top of the partition 210 is in contact with the inner wall of the dust collection cylinder 203. Two guide plates 211 are fixed below the partition 210, symmetrically arranged in the front-back direction. The guide plates 211 are arc-shaped. Each of the upper mounting plates 212 has a limiting block 222 at the lower end. The limiting block 222 is fixed to the dust collection cylinder 203. A baffle post 220 is fixed on the inner wall of the fixing frame 219 near the filter screen 213. Two covers are slidably installed at the front end of the dust collection cylinder 203, symmetrically arranged in the front-back direction.

[0035] The dust collection structure includes an air extraction box 204 rotatably mounted at the rear end of the connecting plate 202. An adjusting motor 205 is installed at the rotating end of the air extraction box 204, and the output end of the adjusting motor 205 is fixed to the rotating end of the air extraction box 204 via a coupling. An air outlet box 207 is fixed at the upper end of the dust collection cylinder 203. An air extraction pipe 206, which is a telescopic flexible hose, connects the rear end of the air outlet box 207 to the air extraction box 204. Multiple air extraction heads are fixed at the lower end of the air extraction box 204. The dust collection structure adsorbs the welding fumes into the dust collection cylinder 203, and then utilizes the internal filter 21... 3. The smoke and dust are filtered and discharged. When one of the filters 213 is clogged, the air intake direction is changed to make the other filter 213 work. Then, the cleaning structure pulls the filter 213, causing it to deform. After the filter 213 is released from the pull, it is reset by using its own elastic potential energy. The elastic force generated by the deformation of the filter 213 knocks off the impurities on its surface, cleaning the impurities on the filter 213. By switching between the two filters 213, the filtration efficiency of the filter 213 is improved and the replacement frequency of the filter 213 is reduced.

[0036] In this embodiment: the welding mechanism includes a welding table 301 set at the center of the base plate 100, a slide rail 302 fixed at the upper end of the support frame 201, a lead screw 304 rotatably installed inside the slide rail 302, a moving motor 303 installed at the rotating end of the lead screw 304, the output end of the moving motor 303 is fixed to the rotating end of the lead screw 304 through a coupling, a sliding seat 305 slidably installed inside the slide rail 302, a welding gun 306 installed at the lower end of the sliding seat 305, and the sliding seat 305 is threadedly connected to the lead screw 304.

[0037] Working principle: First, the workpiece is placed above the welding table 301. The moving motor 303 is started to drive the lead screw 304 to rotate, which in turn drives the sliding seat 305 to move back and forth, and drives the welding gun 306 to move back and forth to perform laser welding on the workpiece. The multiple exhaust fans 221 inside the fixed frame 219 are started to create negative pressure inside the dust collection cylinder 203 and the exhaust box 207. Then, the multiple exhaust heads at the bottom of the exhaust box 204 draw the welding fumes into the dust collection cylinder 203 through the exhaust pipe 206. The guide plate 211 guides the fumes to the filter screen 213, and the filter screen 213 filters the fumes. The filtered fumes are discharged outward through the fixed frame 219.

[0038] When one of the filter screens 213 becomes clogged, the rotary motor 226 is activated, driving the rotating shaft 208 to rotate. This causes the baffle 210 to rotate counterclockwise until it reaches the corresponding limit block 222, where it is stopped. This causes the smoke and dust flowing out of the exhaust box 207 to flow to the other filter screen 213. As the rotating shaft 208 rotates, it also causes the baffle 209 to rotate counterclockwise, which in turn causes the scraper 216 at the end to rotate counterclockwise. The scraper 216 pushes the lower limit of the mounting plate 215 to the stop. The plate 217 moves downward, causing the lower mounting plate 215 to move downward, which in turn pulls the filter screen 213 downward and causes it to deform. When the lower mounting plate 215 slides to the bottom of the fixed plate 214, the lower mounting plate 215 can no longer move downward. At this time, the scraper 216 continues to rotate counterclockwise. In order to overcome the squeezing force, the scraper 216 will retract into the baffle 209, and then cause the scraper 216 to disengage from the lower limit plate 217 at the lower end of the lower mounting plate 215.

[0039] Subsequently, after the lower limit plate 217 is no longer pressed downward by the scraper 216, the filter screen 213 will quickly contract upward and reset due to its own elasticity. At this time, the filter screen 213 will deform again and return to its original shape. When the filter screen 213 resets, the side wall of the filter screen 213 will collide with the baffle post 220 inside the fixed frame 219, causing the filter screen 213 to vibrate. Combined with the elastic force generated by the deformation of the filter screen 213, the filter screen 213 will generate greater elasticity and vibration force, thereby shaking the impurities clogging the surface of the filter screen 213 downward and onto the baffle 209. Then the impurities will slide into the recess of the baffle 209 and enter the... To clean the impurities clogging the surface of filter 213, when another filter 213 also becomes clogged, the same principle is used to clean the impurities on the surface of the other filter 213. The equipment does not need to be stopped when cleaning the filters 213; simply switch between the two filters 213. Using the two filters 213 in a back-and-forth manner improves the filtration efficiency of the filters 213 and reduces the frequency of filter replacement. Finally, to clean the impurities above the baffle 209, simply pull the cover at the front of the dust collection cylinder 203 and use tools to clean the impurities in the recessed area of ​​the baffle 209.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A dust collection mechanism for laser welding, comprising a base plate (100), wherein a welding mechanism is disposed at the center of the base plate (100), characterized in that: It also includes a dust collection mechanism for absorbing and filtering the fumes generated during welding, the dust collection mechanism being located above the welding mechanism; The dust collection mechanism includes a dust collection structure for adsorbing smoke and dust, and a filtration structure for filtering the adsorbed and collected smoke and dust. The filter structure includes a support frame (201) disposed above the base plate (100), a connecting plate (202) fixed to the front side of the support frame (201), a dust collection cylinder (203) disposed at the upper end of the connecting plate (202), two symmetrically arranged sliding grooves (223) on the upper part of the dust collection cylinder (203), an arc-shaped filter screen (213) disposed in the sliding groove (223), a fixing frame (219) fixed on the side wall of the dust collection cylinder (203) near the filter screen (213), a plurality of exhaust fans (221) rotatably installed in the fixing frame (219), and a cleaning structure for cleaning impurities on the surface of the filter screen (213) disposed inside the dust collection cylinder (203).

2. The dust collection mechanism for laser welding according to claim 1, characterized in that: The cleaning structure includes a rotating shaft (208) rotatably disposed at the center of the dust collection cylinder (203). A rotary motor (226) is mounted on the rotating end of the rotating shaft (208). The output end of the rotary motor (226) is fixed to the rotating end of the rotating shaft (208) via a coupling. A dividing plate (225) is fixed to the upper end of the slide groove (223). An upper mounting plate (212) is mounted on the lower end of the dividing plate (225). The upper mounting plate (212) and the dividing plate (225) are connected. 5) The slide (223) is connected by bolts. A fixing plate (214) is fixed at the lower end of the slide (223). A lower mounting plate (215) is slidably installed on the side wall of the fixing plate (214). The filter screen (213) is installed between the lower mounting plate (215) and the upper mounting plate (212). The filter screen (213) is elastic. An upper limit plate (218) is fixed at the upper end of the fixing plate (214). A lower limit plate (217) is fixed at the lower end of the lower mounting plate (215). Two baffles (209) are fixed on the surface of the rotating shaft (208) and arranged symmetrically in the front-back direction. A scraper (216) is slidably installed on one end of the baffle (209) near the inner wall of the dust collection cylinder (203). The scraper (216) is in contact with the inner wall of the dust collection cylinder (203) at one end. A compression spring is connected between the scraper (216) and the baffle (209). A partition (210) is fixed at the upper end of the rotating shaft (208). The top end of the partition (210) is in contact with the inner wall of the dust collection cylinder (203). A limiting block (222) is provided at the lower end of the upper mounting plate (212). The limiting block (222) is fixed to the dust collection cylinder (203).

3. The dust collection mechanism for laser welding according to claim 2, characterized in that: The dust collection structure includes an air extraction box (204) rotatably mounted at the rear end of the connecting plate (202). An adjusting motor (205) is installed on the rotating end of the air extraction box (204). The output end of the adjusting motor (205) is fixed to the rotating end of the air extraction box (204) via a coupling. An air outlet box (207) is fixed at the upper end of the dust collection cylinder (203). An air extraction pipe (206) is connected between the rear end of the air outlet box (207) and the air extraction box (204). The air extraction pipe (206) is a telescopic flexible hose. Multiple air extraction heads are fixed at the lower end of the air extraction box (204).

4. A dust collection mechanism for laser welding according to claim 3, characterized in that: The welding mechanism includes a welding table (301) located at the center of the base plate (100). A slide rail (302) is fixed at the upper end of the support frame (201). A lead screw (304) is rotatably installed inside the slide rail (302). A moving motor (303) is installed at the rotating end of the lead screw (304). The output end of the moving motor (303) is fixed to the rotating end of the lead screw (304) through a coupling. A sliding seat (305) is slidably installed inside the slide rail (302). A welding torch (306) is installed at the lower end of the sliding seat (305). The sliding seat (305) is threadedly connected to the lead screw (304).

5. A dust collection mechanism for laser welding according to claim 4, characterized in that: A baffle (220) is fixed on the inner wall of the fixed frame (219) near the filter screen (213). Two guide plates (211) are fixed below the partition (210) and are arranged symmetrically in the front-back direction. The guide plates (211) are arc-shaped.

6. A dust collection mechanism for laser welding according to claim 5, characterized in that: The baffle (209) is recessed at the center and two covers are slidably installed at the front end of the dust collection cylinder (203) in a front-back direction.

7. A dust collection mechanism for laser welding according to claim 6, characterized in that: The exhaust fan (221) is provided with a protective cover (224) on its upper side, and the protective cover (224) is fixedly connected to the fixed frame (219).

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