A laser drilling device for plastic impeller of washing machine

Abstract

The present application belongs to the technical field of laser drilling, and particularly relates to a laser drilling device for a plastic pulsator of a washing machine, which comprises a supporting assembly, an adjusting assembly is installed on the supporting assembly, a lifting assembly is fixedly connected to the adjusting assembly, a laser is installed at the bottom of the lifting assembly, a clamping assembly is arranged below the laser, a negative pressure tank is connected to the bottom of the clamping assembly, a negative pressure pipe is fixedly and penetratingly arranged on the top wall of the negative pressure tank, and a fixing seat is fixedly connected in the bottom end inner cavity of the negative pressure pipe. A negative pressure tank with a suction pipe communicated on one side is installed below the chuck, a negative pressure pipe is penetratingly arranged on the top wall of the negative pressure tank, two receiving plates with a cross-shaped structure are arranged in the negative pressure pipe, the two receiving plates are distributed in a staggered manner, when negative pressure is generated in the negative pressure tank, flowing air can push the slag to the center of the chuck through the air inlet hole, and the slag falls on the receiving plates to be cooled and solidified, so that the problem that the slag adheres to the inner wall of the suction pipe to cause blockage of the suction pipe when the slag enters the suction pipe is avoided.

Description

Technical Field

[0001] This invention belongs to the field of laser drilling technology, and specifically relates to a laser drilling device for a plastic impeller of a washing machine. Background Technology

[0002] The washing machine's pulsator is a circular rotating disc installed at the bottom of the washing machine tub. Its upper surface has raised ribs. When the washing machine starts, the pulsator drives the water flow inside the tub to form a clockwise or counterclockwise vortex, causing the clothes to rotate and tumble, thus cleaning stains. To help create a strong water flow and reduce friction between the clothes and the pulsator, the pulsator is usually perforated to allow the water to circulate smoothly up and down, generating an upward impact force. This prevents clothes from sticking tightly to the pulsator and causing friction, while also allowing the water flow to disperse the clothes and prevent them from tangling.

[0003] Washing machine impellers are typically perforated using laser drilling devices. To collect the residue generated during drilling, some laser drilling devices are equipped with a negative pressure structure to suck away the molten slag formed after drilling, preventing molten slag fragments from spreading into the working environment and causing pollution. However, when the laser head perforates the impeller, the falling molten slag is accompanied by gas flow, causing the molten slag, which is in a high-temperature molten state, to cool down rapidly. When the molten slag comes into contact with the inner wall of the negative pressure structure pipe, it may adhere to the pipe wall due to the temperature drop. This not only makes it difficult to clean, but also causes pipe blockage after long-term accumulation, affecting the collection of plastic particles. Summary of the Invention

[0004] The purpose of this invention is to provide a laser drilling device for plastic impellers in washing machines that has a simple structure and reasonable design in order to solve the above-mentioned problems.

[0005] The present invention achieves the above objectives through the following technical solutions:

[0006] A laser drilling device for a plastic pulsator in a washing machine includes a support assembly, an adjustment assembly mounted on the support assembly, a lifting assembly fixedly connected to the adjustment assembly, a laser mounted at the bottom of the lifting assembly, a clamping assembly below the laser, a negative pressure box connected to the bottom of the clamping assembly, a negative pressure tube fixedly inserted through the top wall of the negative pressure box, a fixed seat fixedly connected to the inner cavity at the bottom end of the negative pressure tube, two cross-shaped receiving plates mounted above the fixed seats, the two receiving plates being staggered vertically, both receiving plates being fixedly connected to the inner wall of the negative pressure tube on their periphery, a rotating shaft rotatably connected to the center of the fixed seat, the top end of the rotating shaft passing through the receiving plates and rotatably connected to the receiving plates, scrapers fixedly connected to the rotating shaft above the two receiving plates, the bottom edge of the scraper slidingly contacting the upper surface of the corresponding receiving plate, a fan blade fixedly connected to the bottom end of the rotating shaft, a filter assembly mounted on the support assembly on one side of the negative pressure box, and an air extraction assembly mounted on the end of the filter assembly away from the negative pressure box.

[0007] As a further optimization of the present invention, the support assembly includes a lower support plate, an upper support plate is disposed above the lower support plate, the two ends of the lower support plate and the upper support plate are fixed together by end plates, two parallel ribs are installed on the lower surface of the upper support plate, the bottom of the ribs abuts against the upper surface of the lower support plate, and a sound-absorbing pad is installed on the bottom wall of the lower support plate.

[0008] As a further optimization of the present invention, the adjustment component includes a slide plate slidably disposed between the lower support plate and the upper support plate, a movable frame fixedly connected to the slide plate, a first connecting seat fixedly connected to the lower surface of the slide plate, a first lead screw passing through the first connecting seat, the first connecting seat being threadedly connected to the first lead screw, a first motor for driving the first lead screw to rotate being installed on one of the end plates, and first guide rods that slide in contact with the lower surface of the slide plate being provided on both sides of the first lead screw, the ends of the first guide rods being fixedly connected to the end plates.

[0009] As a further optimization of the present invention, the adjustment assembly further includes a second lead screw rotatably connected to the movable frame, a second motor for driving the second lead screw to rotate is installed on the movable frame, a second guide rod is fixedly connected to the movable frame on one side of the second lead screw, a second connecting seat is sleeved on both the second lead screw and the second guide rod, the second connecting seat sleeved on the second lead screw is threadedly connected to the second lead screw, and the second connecting seat sleeved on the second guide rod is slidably connected to the second guide rod.

[0010] As a further optimization of the present invention, the lifting assembly includes a back plate fixedly installed on the second connecting seat, a guide rail installed on the side of the back plate away from the second connecting seat, a slide block slidably connected on the guide rail, a cylinder for driving the slide block to slide at the top of the back plate, and a laser installed at the bottom of the slide block.

[0011] As a further optimization of the present invention, the clamping assembly includes a chuck installed on a negative pressure box. The upper surface of the chuck is provided with a plurality of annularly distributed sliding grooves. Each sliding groove is slidably connected to a clamping block. The same elastic ring is fixedly sleeved on the outside of the plurality of clamping blocks. An air inlet is provided on the elastic ring.

[0012] As a further optimization of the present invention, the filtration assembly includes an exhaust pipe with one end connected to the inner cavity of the negative pressure box, a first filter cylinder connected to the end of the exhaust pipe away from the negative pressure box, a spiral guide plate fixedly installed inside the first filter cylinder, a filter screen cover installed inside the end of the first filter cylinder away from the exhaust pipe, a gap being left between the periphery of the end of the filter screen cover inside the first filter cylinder and the inner wall of the first filter cylinder, an installation ring being provided at the open end of the filter screen cover, a through hole being opened on the side wall of the end of the first filter cylinder connected to the filter screen cover, an annular cover being fixedly fitted on the first filter cylinder outside the through hole, a collection box being connected below the annular cover, and a drawer being slidably connected inside the collection box.

[0013] As a further optimization of the present invention, a second filter cylinder is connected to the end of the first filter cylinder away from the exhaust pipe, and a filter element for filtering fine plastic particles is installed inside the second filter cylinder.

[0014] As a further optimization of the present invention, the air extraction assembly includes an air pump fixedly installed on the upper support plate. The air pump's suction end is connected to one end of the second filter cylinder. An exhaust pipe is connected to the air pump's exhaust end. A pressure relief valve is installed on the end of the exhaust pipe away from the air pump. A flexible branch pipe is connected to the middle end of the exhaust pipe. An annular jet nozzle is opened at the bottom of the laser. A pipe joint connected to the annular jet nozzle is installed on one side wall of the laser. The end of the flexible branch pipe away from the exhaust pipe is fixedly connected to the pipe joint.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. A negative pressure box with an air extraction pipe connected to one side is installed below the chuck. The negative pressure pipe passes through the top wall of the negative pressure box. Inside the negative pressure pipe are two cross-shaped receiving plates. The two receiving plates are staggered. When negative pressure is generated in the negative pressure box, the flowing air can pass through the air inlet and push the molten slag to the center of the chuck, and fall onto the receiving plates to cool and solidify. This avoids the problem of the slag sticking to the inner wall of the air extraction pipe when it enters the air extraction pipe, which can easily cause blockage of the air extraction pipe.

[0017] 2. The end of the exhaust pipe away from the negative pressure box is connected to a first filter cylinder and a second filter cylinder in sequence. The end of the first filter cylinder away from the exhaust pipe is equipped with a filter screen for filtering large particles of molten slag. The filter element is installed in the second filter cylinder. The first filter cylinder and the second filter cylinder together form a multi-stage filtration structure, which can minimize the problem of molten slag accumulating and clogging during the filtration process, thus affecting the airflow.

[0018] 3. An air pump is installed on the upper support plate. An exhaust pipe is connected to the exhaust end of the air pump. The air pump's suction end is connected to the exhaust end of the second filter cartridge. This is used to draw air from the air pump to create negative pressure in the negative pressure box, which facilitates the suction of molten slag generated during the drilling process. A pressure relief valve is installed on the end of the exhaust pipe away from the air pump. A flexible branch pipe is connected to the middle end of the exhaust pipe. The end of the flexible branch pipe away from the exhaust pipe is fixedly connected to a pipe joint to deliver some gas to the drilling position to clean the molten slag remaining on the inner wall of the hole. There is no need to connect to an external air source, which is not only convenient to use, but also saves costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of one side of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall structure of the present invention from another side;

[0021] Figure 3This is a schematic diagram showing the installation positions of the second lead screw and the second guide rod of the present invention;

[0022] Figure 4 This is a schematic diagram showing the installation positions of the first lead screw and the first guide rod of the present invention;

[0023] Figure 5 This is a schematic diagram of the installation of the support plate and rib plate of the present invention;

[0024] Figure 6 This is a schematic diagram showing the connection of the rotating shaft, receiving plate, scraper, and fan blade of the present invention;

[0025] Figure 7 This is a schematic diagram of the connection structure between the annular cover and the collection box of the present invention;

[0026] Figure 8 This is the present invention. Figure 7 Internal structure diagram;

[0027] Figure 9 This is a schematic diagram showing the connection between the filter screen and the mounting ring of the present invention;

[0028] Figure 10 This is a schematic diagram of the connection structure of the chuck, the chuck block, and the elastic ring of the present invention;

[0029] Figure 11 This is a schematic diagram of the installation position of the laser of the present invention;

[0030] Figure 12 This is a schematic diagram showing the connection between the mounting base and pipe joint of the present invention and the laser.

[0031] In the diagram: 101, lower support plate; 102, upper support plate; 103, end plate; 104, rib plate; 105, sound-absorbing pad; 201, sliding plate; 202, movable frame; 203, first connecting seat; 204, first lead screw; 205, first motor; 206, first guide rod; 207, second lead screw; 208, second motor; 209, second guide rod; 210, second connecting seat; 301, back plate; 302, guide rail; 303, slide block; 304, cylinder; 305, laser; 306, mounting base; 307, fiber optic connector; 308, pipe connector; 401. Chuck; 402. Slide groove; 403. Locking block; 404. Elastic ring; 405. Air inlet; 501. Negative pressure box; 502. Negative pressure pipe; 503. Fixing base; 504. Support plate; 505. Rotating shaft; 506. Scraper; 507. Fan blade; 601. Suction pipe; 602. First filter cartridge; 603. Spiral guide plate; 604. Filter screen cover; 605. Mounting ring; 606. Through hole; 607. Annular cover; 608. Collection box; 609. Drawer; 610. Second filter cartridge; 611. Filter element; 701. Air pump; 702. Exhaust pipe. Detailed Implementation

[0032] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0033] Example: Figure 1 - Figure 4 As shown, a laser drilling device for a plastic impeller of a washing machine includes a lower support plate 101 and an upper support plate 102 above the lower support plate 101. The two ends of the lower support plate 101 and the upper support plate 102 are fixedly connected by an end plate 103. Two parallel ribs 104 are installed on the lower surface of the upper support plate 102. The bottom of the ribs 104 abuts against the upper surface of the lower support plate 101 to cooperate with the lower support plate 101 to support the middle position of the upper support plate 102 and improve the support performance of the upper support plate 102. A sound-dampening pad 105 is installed on the bottom wall of the lower support plate 101. The sound-dampening pad 105 can not only support the lower support plate 101 to lift it off the ground and reduce the corrosive effect of ground moisture on the lower support plate 101, but also prevent the entire device from generating harsh noise due to friction when it moves under force.

[0034] like Figure 1 - Figure 4 As shown, a slide plate 201 is slidably connected between the lower support plate 101 and the upper support plate 102. A movable frame 202 is fixedly connected to the slide plate 201. A first connecting seat 203 is fixedly connected to the lower surface of the slide plate 201. A first lead screw 204 is inserted into the first connecting seat 203. The first connecting seat 203 and the first lead screw 204 are threadedly connected. A first motor 205 for driving the first lead screw 204 to rotate is installed on one of the end plates 103. A first guide rod 206 is provided on both sides of the first lead screw 204 to slide in contact with the lower surface of the slide plate 201. The end of the first guide rod 206 is fixedly connected to the end plate 103. The slide plate 201 is supported and guided from both sides by the two first guide rods 206.

[0035] When the first motor 205 is started, the first motor 205 can drive the first lead screw 204 to rotate. Under the action of the threads of the first lead screw 204 and the first connecting seat 203, the slide plate 201 is pushed to slide along the length direction of the first lead screw 204, thereby adjusting the position of the slide plate 201.

[0036] like Figure 3 and Figure 11As shown, a second lead screw 207 is rotatably connected to the movable frame 202. A second motor 208 is installed on the movable frame 202 at one end of the second lead screw 207. The output end of the second motor 208 is fixedly connected to the end of the second lead screw 207 to drive the second lead screw 207 to rotate. A second guide rod 209 is fixedly connected to the movable frame 202 on one side of the second lead screw 207. A second connecting seat 210 is sleeved on both the second lead screw 207 and the second guide rod 209. The second connecting seat 210 sleeved on the second lead screw 207 is threadedly connected to the second lead screw 207. The second connecting seat 210 sleeved on the second guide rod 209 is slidably connected to the second guide rod 209. A back plate 301 is fixedly connected to the second connecting seat 210. When the second motor 208 is started to drive the second lead screw 207 to rotate, the second lead screw 207 can cooperate with the second connecting seat 210 and the second guide rod 209 to drive the back plate 301 to move and adjust the position of the back plate 301.

[0037] like Figure 11 and Figure 12 As shown, a guide rail 302 is installed on the side of the back plate 301 away from the second connecting seat 210. A slide block 303 is slidably connected to the guide rail 302. A cylinder 304 for driving the slide block 303 to slide is installed at the top of the back plate 301. A laser 305 is arranged below the slide block 303. A mounting seat 306 is connected to one side of the laser 305. The laser 305 is fixed to the lower surface of the slide block 303 through the mounting seat 306. An optical fiber connector 307 for connecting an external optical fiber is arranged at the top of the laser 305.

[0038] like Figure 12 As shown, the laser 305 has an annular jet nozzle at its bottom. A pipe connector 308 connected to the annular jet nozzle is also installed on one side wall of the laser 305. When air is supplied to the annular jet nozzle through the pipe connector 308, the airflow can be ejected at high speed through the annular jet nozzle. This airflow can not only prevent molten slag, dust and other materials generated during the drilling process from splashing onto the lens of the laser 305, but also blow away the molten waste generated during the drilling process, making the hole cleaner and greatly improving the quality and accuracy of drilling.

[0039] like Figure 1 and Figure 10 As shown, a ring-shaped chuck 401 is provided below the laser 305. Multiple ring-shaped grooves 402 are provided on the upper surface of the chuck 401. Each groove 402 is slidably connected to a locking block 403. The same elastic ring 404 is fixedly sleeved on the outside of the multiple locking blocks 403. When in use, the washing machine impeller that needs to be drilled can be pressed between the multiple locking blocks 403, and the elastic ring 404 will drive the multiple locking blocks 403 to close together, thereby fixing the washing machine impeller.

[0040] like Figure 5 , Figure 6 and Figure 10 As shown, an air inlet 405 is provided on the elastic ring 404. The air inlet 405 is used to draw air during the collection of molten slag generated by laser drilling. A negative pressure box 501 is provided below the chuck 401 and is fixedly connected to the upper support plate 102. An air extraction pipe 601 is connected to one side of the negative pressure box 501. A negative pressure pipe 502 is fixedly inserted through the top wall of the negative pressure box 501. The top end of the negative pressure pipe 502 is inserted into the chuck 401. A fixing seat 503 is fixedly connected to the inner cavity of the bottom end of the negative pressure pipe 502. Two cross-shaped structures are provided above the fixing seat 503. The two receiving plates 504 are staggered vertically and are fixedly connected to the inner wall of the negative pressure pipe 502 on both sides. When negative pressure is generated in the negative pressure box 501, external air will enter the chuck 401 through the air inlet 405 and act on the falling molten slag, causing the molten slag to gather towards the center of the chuck 401 and finally fall onto the two receiving plates 504 for cooling and solidification. The staggered vertical distribution of the two receiving plates 504 can allow air to pass through the gap between the two receiving plates 504 while receiving the molten slag.

[0041] A rotating shaft 505 is rotatably connected to the center of the fixed base 503. The top end of the rotating shaft 505 passes through the receiving plate 504 and is rotatably connected to the receiving plate 504. Scrapers 506 are fixedly connected to the rotating shaft 505 above the two receiving plates 504. The bottom edge of the scraper 506 slides in contact with the upper surface of the corresponding receiving plate 504. A fan blade 507 is fixedly connected to the bottom end of the rotating shaft 505. When the airflow is discharged from the bottom end of the negative pressure pipe 502, it can drive the fan blade 507 to drive the rotating shaft 505 to rotate. The rotation of the rotating shaft 505 drives the two scrapers 506 to rotate synchronously, scraping off some of the slag adhering to the receiving plate 504. The slag is received by the receiving plate 504 and cooled and solidified, which avoids the problem of high-temperature slag adhering to the inner wall of the extraction pipe 601 when it enters the extraction pipe 601, which can easily cause blockage of the extraction pipe 601.

[0042] like Figures 5-9 As shown, the end of the suction pipe 601 away from the negative pressure box 501 is connected to a first filter cylinder 602. A spiral guide plate 603 is fixedly installed inside the first filter cylinder 602. After the airflow enters the first filter cylinder 602 from the negative pressure box 501 along the suction pipe 601, it can move spirally under the action of the spiral guide plate 603.

[0043] A filter screen 604 for filtering large particles of molten slag is provided inside the end of the first filter cylinder 602 away from the exhaust pipe 601. A gap is left between the periphery of the filter screen 604 inside the first filter cylinder 602 and the inner wall of the first filter cylinder 602. An installation ring 605 is provided at the open end of the filter screen 604, and the filter screen 604 is fixedly connected inside the first filter cylinder 602 by the installation ring 605.

[0044] A through hole 606 is provided on one side wall of the first filter cylinder 602 connected to the filter screen cover 604. An annular cover 607 is fixedly fitted on the first filter cylinder 602 outside the through hole 606. A collection box 608 is connected below the annular cover 607. A drawer 609 is slidably connected inside the collection box 608. As the molten slag passes through the first filter cylinder 602 with the airflow, some large molten slag particles are blocked by the filter screen cover 604 and cannot pass through the filter screen cover 604. Under the centrifugal force generated by the spiral flow of the airflow, they pass through the through hole 606 and enter the annular cover 607. Under the limiting and guiding effect of the annular cover 607, they fall into the drawer 609 in the collection box 608 below, thus achieving primary filtration of the molten slag and removing large molten slag particles.

[0045] like Figure 9 As shown, a second filter cylinder 610 is connected to the end of the first filter cylinder 602 away from the exhaust pipe 601. A filter element 611 is installed inside the second filter cylinder 610. Tiny molten slag passes through the filter screen 604 and enters the second filter cylinder 610. It undergoes secondary filtration through the filter element 611 installed inside the second filter cylinder 610. By adopting a multi-stage filtration method, the problem of molten slag accumulation and blockage can be avoided as much as possible.

[0046] like Figure 1 As shown, an air pump 701 is installed on the upper support plate 102. The air pump 701's suction end is connected to the end of the second filter cylinder 610 away from the first filter cylinder 602. The air pump 701 draws air to create a negative pressure in the negative pressure box 501, and uses this negative pressure to collect the molten slag generated during laser drilling of the washing machine impeller. An exhaust pipe 702 is connected to the air pump 701's exhaust end. A pressure relief valve is installed on the end of the exhaust pipe 702 away from the air pump 701. A flexible branch pipe is connected to the middle end of the exhaust pipe 702. The end of the flexible branch pipe away from the exhaust pipe 702 is fixedly connected to the pipe joint 308, which delivers some gas to the drilling position to clean the molten slag remaining on the inner wall of the hole. There is no need to connect to an external air source, which is not only convenient to use but also saves costs.

[0047] It should be noted that, in use, this laser drilling device for a plastic pulsator of a washing machine first opens the locking blocks 403 connected to the chuck 401, and places the washing machine pulsator between the locking blocks 403. After releasing the locking blocks 403, the elastic ring 404 pushes the locking blocks 403 to slide towards the center of the chuck 401, thus securing the washing machine pulsator above the chuck 401. Then, the first motor 205 and the second motor 208 are started to drive the first lead screw 204 and the second lead screw 207 to rotate, adjusting the laser 305 to the drilling position. Then, the cylinder 304 is started to drive the laser 305 to move downward. The high-energy-density laser beam emitted by the laser 305 instantly melts or vaporizes the drilling position on the pulsator, thereby forming a hole on the pulsator.

[0048] A negative pressure box 501 is installed on the upper support plate 102 below the chuck 401. A suction pipe 601 is connected to one side of the negative pressure box 501. A negative pressure pipe 502 passes through the top wall of the negative pressure box 501, with its top end inserted into the chuck 401. A fixing seat 503 is fixedly connected to the inner cavity of the bottom end of the negative pressure pipe 502. Two cross-shaped receiving plates 504 are positioned above the fixing seat 503, staggered vertically. When energized on the impeller... When drilling, the air pump 701 is started. When negative pressure is generated in the negative pressure box 501, the flowing air can pass through the air inlet 405 opened on the elastic ring 404, pushing the molten slag generated during drilling to the center of the chuck 401, so that the molten slag falls onto the receiving plate 504 to cool and solidify. The air can pass through the gap between the two receiving plates 504, which avoids the air entering the suction pipe 601 from sticking to the inner wall of the suction pipe 601 and causing the suction pipe 601 to be blocked.

[0049] The end of the exhaust pipe 601 away from the negative pressure box 501 is sequentially connected to a first filter cylinder 602 and a second filter cylinder 610. The end of the first filter cylinder 602 away from the exhaust pipe 601 is equipped with a filter screen 604 for filtering large particles of molten slag. The side wall of the first filter cylinder 602 around the filter screen 604 is provided with a through hole 606. Since a spiral guide plate 603 is provided inside the first filter cylinder 602, the air will flow spirally after entering the first filter cylinder 602. The centrifugal force generated by the spiral flow of the air can be used to guide large particles of molten slag that cannot pass through the filter screen 604 through the through hole 606 into the collection box 608 for primary filtration of the molten slag. This is combined with the filter element 611 installed in the second filter cylinder 610 for secondary filtration, forming a multi-stage filtration structure. This can minimize the problem of molten slag accumulating and clogging during the filtration process, thus affecting the airflow.

[0050] When the air pump 701 is pumping and venting air, some of the discharged gas enters the flexible branch pipe through the exhaust pipe 702. The end of the flexible branch pipe away from the exhaust pipe 702 is fixedly connected to the pipe joint 308, which delivers the gas to the drilling position to clean the residual slag on the inner wall of the hole. There is no need to connect to an external air source, which is not only convenient to use, but also saves costs.

[0051] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A laser drilling device for a plastic impeller in a washing machine, comprising a support assembly, an adjustment assembly mounted on the support assembly, a lifting assembly fixedly connected to the adjustment assembly, and a laser (305) mounted at the bottom of the lifting assembly, characterized in that: A clamping assembly is provided below the laser (305), and a negative pressure box (501) is connected to the bottom of the clamping assembly. A negative pressure tube (502) is fixedly inserted through the top wall of the negative pressure box (501). A fixing seat (503) is fixedly connected to the inner cavity at the bottom end of the negative pressure tube (502). Two support plates (504) with a "+" structure are provided above the fixing seat (503). The two support plates (504) are staggered vertically. The periphery of the two support plates (504) is fixedly connected to the inner wall of the negative pressure tube (502). The center of the fixing seat (503) is rotated. A rotating shaft (505) is connected to the top of the rotating shaft (505), which passes through the support plate (504) and is rotatably connected to the support plate (504). A scraper (506) is fixedly connected to the rotating shaft (505) above the two support plates (504). The bottom edge of the scraper (506) slides in contact with the upper surface of the corresponding support plate (504). A fan blade (507) is fixedly connected to the bottom of the rotating shaft (505). A filter assembly is installed on the support assembly on one side of the negative pressure box (501). An air extraction assembly is installed at the end of the filter assembly away from the negative pressure box (501). The filter assembly includes an exhaust pipe (601) with one end connected to the inner cavity of a negative pressure chamber (501). A first filter cylinder (602) is connected to the end of the exhaust pipe (601) away from the negative pressure chamber (501). A spiral guide plate (603) is fixedly installed inside the first filter cylinder (602). A filter screen (604) is installed inside the end of the first filter cylinder (602) away from the exhaust pipe (601). A gap is left between the periphery of the filter screen (604) inside the first filter cylinder (602) and the inner wall of the first filter cylinder (602). An installation port is provided at the open end of the filter screen (604). A ring (605) is formed. A through hole (606) is provided on the side wall of the first filter cylinder (602) connected to the filter screen cover (604). An annular cover (607) is fixedly fitted on the first filter cylinder (602) outside the through hole (606). A collection box (608) is connected below the annular cover (607). A drawer (609) is slidably connected inside the collection box (608). A second filter cylinder (610) is connected to the end of the first filter cylinder (602) away from the exhaust pipe (601). A filter element (611) for filtering fine plastic particles is installed inside the second filter cylinder (610). The air extraction assembly includes an air pump (701), the air pump (701) is connected to one end of the second filter cartridge (610), an exhaust pipe (702) is connected to the exhaust end of the air pump (701), a pressure relief valve is installed on the end of the exhaust pipe (702) away from the air pump (701), a flexible branch pipe is connected to the middle end of the exhaust pipe (702), an annular jet nozzle is opened at the bottom of the laser (305), a pipe joint (308) connected to the annular jet nozzle is installed on one side wall of the laser (305), and the end of the flexible branch pipe away from the exhaust pipe (702) is fixedly connected to the pipe joint (308).

2. The laser drilling device for a plastic impeller in a washing machine according to claim 1, characterized in that: The support assembly includes a lower support plate (101), an upper support plate (102) is provided above the lower support plate (101), an air pump (701) is fixedly installed on the upper support plate (102), the two ends of the lower support plate (101) and the upper support plate (102) are fixed together by end plates (103), two parallel ribs (104) are installed on the lower surface of the upper support plate (102), the bottom of the ribs (104) abuts against the upper surface of the lower support plate (101), and a sound-absorbing pad (105) is installed on the bottom wall of the lower support plate (101).

3. The laser drilling device for a plastic impeller in a washing machine according to claim 2, characterized in that: The adjustment assembly includes a slide plate (201) slidably disposed between a lower support plate (101) and an upper support plate (102). A movable frame (202) is fixedly connected to the slide plate (201). A first connecting seat (203) is fixedly connected to the lower surface of the slide plate (201). A first lead screw (204) is inserted inside the first connecting seat (203). The first connecting seat (203) is threadedly connected to the first lead screw (204). A first motor (205) for driving the first lead screw (204) to rotate is installed on one end plate (103). A first guide rod (206) is provided on both sides of the first lead screw (204) and slides in contact with the lower surface of the slide plate (201). The end of the first guide rod (206) is fixedly connected to the end plate (103).

4. The laser drilling device for a plastic impeller in a washing machine according to claim 3, characterized in that: The adjustment assembly also includes a second lead screw (207) rotatably connected to the movable frame (202). A second motor (208) for driving the second lead screw (207) to rotate is installed on the movable frame (202). A second guide rod (209) is fixedly connected to the movable frame (202) on one side of the second lead screw (207). A second connecting seat (210) is sleeved on both the second lead screw (207) and the second guide rod (209). The second connecting seat (210) sleeved on the second lead screw (207) is threadedly connected to the second lead screw (207), and the second connecting seat (210) sleeved on the second guide rod (209) is slidably connected to the second guide rod (209).

5. The laser drilling device for a plastic impeller in a washing machine according to claim 4, characterized in that: The lifting assembly includes a back plate (301) fixedly installed on the second connecting seat (210), a guide rail (302) installed on the side of the back plate (301) away from the second connecting seat (210), a slide block (303) slidably connected on the guide rail (302), a cylinder (304) for driving the slide block (303) to slide is installed at the top of the back plate (301), and a laser (305) is installed at the bottom of the slide block (303).

6. The laser drilling device for a plastic impeller in a washing machine according to claim 1, characterized in that: The clamping assembly includes a chuck (401) mounted on a negative pressure box (501). The upper surface of the chuck (401) is provided with a plurality of annularly distributed sliding grooves (402). Each sliding groove (402) is slidably connected with a clamping block (403). The outer sides of the plurality of clamping blocks (403) are fixedly fitted with the same elastic ring (404). An air inlet (405) is provided on the elastic ring (404).

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