A thin-walled guide sleeve groove cutting device

Abstract

This utility model discloses a thin-walled guide sleeve groove cutting device, including a housing. The annular groove on the left wall of the housing is rotatably connected to the annular slip ring on the outer arc surface of a cylinder. A chuck is provided at the right end of the cylinder. A pair of symmetrical guide rods are fixedly connected between the left and right inner walls of the housing. An adjustment platform is slidably connected between the guide rods. An adjustment block is slidably connected to the upper end of the adjustment platform. A cutting blade is provided at the left end of the adjustment block. The device also includes a debris cleaning mechanism. The debris cleaning mechanism includes a bearing, an air pipe, a nozzle, a rotary joint, and a connecting pipe. The air pipes are rotatably connected between the left and right inner walls of the housing via the bearing. The outer wall of the air pipes is provided with evenly distributed nozzles. A rotary joint is provided at the right end of the air pipes. This thin-walled guide sleeve groove cutting device eliminates the need to open the housing door during cleaning, preventing debris from flying out during the cleaning process and reducing manual workload. Multiple nozzles clean the debris, resulting in better cleaning effect.

Description

Technical Field

[0001] This utility model relates to the field of thin-walled guide sleeve groove cutting technology, specifically a thin-walled guide sleeve groove cutting device. Background Technology

[0002] Thin-walled guide sleeves are precision mechanical parts with thin walls, typically between 0.5-3mm thick, making them lightweight. They feature high-precision inner and outer diameters with strict dimensional and geometric tolerances. They exhibit good wear resistance, often achieved through special materials or surface treatments. Some products are self-lubricating, with lubrication grooves or self-lubricating materials. They are primarily used for guiding, positioning, and supporting mechanical equipment. Major applications include: hydraulic and pneumatic cylinder guidance, linear guide systems, precision machine tool spindle guidance, automated equipment positioning, and automotive suspension systems. A thin-walled guide sleeve groove cutting device is a specialized machine tool or processing device used to machine grooves on the inner or outer wall of thin-walled guide sleeves.

[0003] Existing thin-walled guide sleeve groove cutting equipment fixes the workpiece inside the chuck when performing groove cutting on the thin-walled guide sleeve. Then, the motor drives the chuck to rotate, and at the same time, the position of the cutting tool moves under the drive of the motor to perform groove cutting on the workpiece. A large amount of debris is generated during cutting. By opening the door, the debris inside the machine is cleaned by manually holding a high-pressure air gun.

[0004] Existing thin-walled guide sleeve groove cutting equipment has the following problems: when cutting grooves on thin-walled guide sleeves, manual cleaning requires opening the box door, and a large amount of debris will fly out during the cleaning process, increasing the workload of manual labor. Using a single high-pressure air gun to clean the debris is not effective. Therefore, we propose a thin-walled guide sleeve groove cutting equipment. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a thin-walled guide sleeve groove cutting device. When cutting grooves on thin-walled guide sleeves, there is no need to open the box door during cleaning, which prevents debris from flying out during the cleaning process, reduces the amount of manual labor, and multiple nozzles clean the debris, resulting in better cleaning effect. This can effectively solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a thin-walled guide sleeve groove cutting device, including a machine housing, wherein an annular groove on the left wall of the machine housing is rotatably connected to an annular slip ring on the outer arc surface of a cylinder, a chuck is provided at the right end of the cylinder, and symmetrical guide rods are fixedly connected between the left and right inner walls of the machine housing, an adjustment platform is slidably connected between the guide rods, an adjustment block is slidably connected to the upper end of the adjustment platform, a cutting blade is provided at the left end of the adjustment block, and a chip cleaning mechanism is also included.

[0007] The debris cleaning mechanism includes bearings, air pipes, nozzles, rotary joints, and connecting pipes. The left and right inner walls of the housing are rotatably connected by bearings, with symmetrically arranged air pipes. Evenly distributed nozzles are located on the outer walls of the air pipes. A rotary joint is located at the right end of the air pipe, and connecting pipes are fixedly connected to the fixed ends of the rotary joints. When groove-cutting the thin-walled guide sleeve, there is no need to open the housing door during cleaning, preventing debris from flying out during the cleaning process and reducing manual workload. Multiple nozzles clean the debris, resulting in better cleaning performance.

[0008] Furthermore, a control switch group is provided on the right end of the chassis. The input end of the control switch group is electrically connected to an external power source to provide electrical connections for various electrical appliances.

[0009] Furthermore, the debris cleaning mechanism also includes a drive assembly, which includes a slide rail, a slide bar, a rack, and a gear. The right end of the housing is provided with a slide rail, and a slide bar is slidably connected inside the slide rail. Racks are provided on the front and rear sides of the right end of the slide bar. Gears are fixedly sleeved on the outer wall of the rotary joint. The racks are meshed with the longitudinally adjacent gears to provide a rotational connection.

[0010] Furthermore, the drive assembly also includes a connecting rod, a disc, a rotating shaft, and a motor. The right wall of the chassis is equipped with a motor. The right end of the output shaft of the motor is fixedly connected to the rotating shaft. The right end of the rotating shaft is equipped with a disc. The edge of the right end of the disc is rotatably connected to the lower side of the right end of the slide bar via a pin. The input end of the motor is electrically connected to the output end of the control switch group to provide sliding drive.

[0011] Furthermore, a gear ring is fixedly sleeved on the outer wall of the left end of the cylinder, and a second motor is provided on the bottom wall of the housing. A second gear is fixedly connected to the right end of the output shaft of the second motor. The gear ring meshes with the second gear. The input end of the second motor is electrically connected to the output end of the control switch group to provide rotation drive.

[0012] Furthermore, a lead screw is rotatably connected between the front and rear inner walls of the adjustment platform. The lead screw is threadedly connected to the threaded hole in the middle of the lower end of the adjustment block. A motor is provided at the rear end of the adjustment platform. The front end of the output shaft of the motor is fixedly connected to the rear end of the lead screw. The input end of the motor is electrically connected to the output end of the control switch group to provide longitudinal movement strength.

[0013] Furthermore, a lead screw two is rotatably connected between the front and rear inner walls of the chassis. The lead screw two is threadedly connected to the threaded port at the lower center of the adjustment table. A motor four is provided at the right end of the chassis. The left end of the output shaft of the motor four is fixedly connected to the right end of the lead screw two. The input end of the motor four is electrically connected to the output end of the control switch group to provide lateral movement drive.

[0014] Furthermore, dustproof baffles are provided on the middle of the front wall of the chassis and the upper and lower parts of the rear wall of the chassis, respectively. The front dustproof baffle is located between the two rear dustproof baffles, and a collection box is slidably connected to the lower end of the chassis for easy collection of debris.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This thin-walled guide sleeve groove cutting device has the following advantages:

[0016] Driven by motor one, the slide bar reciprocates linearly within the slide rail via a rotating shaft, disc, and connecting rod. The slide bar, through a rack and meshing gear one, drives the air pipe to oscillate reciprocally via a rotary joint. High-pressure gas is ejected from the nozzle through the bearing and air pipe, which then blows the debris inside the casing downwards. When the thin-walled guide sleeve is grooved, there is no need to open the casing door during cleaning, preventing debris from flying out during the cleaning process and reducing manual workload. Multiple nozzles clean the debris, resulting in better cleaning effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the front side cross-sectional structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the right-side cross-sectional structure of the present invention;

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of the upper side of this utility model;

[0022] Figure 6 This is an enlarged structural diagram of point A in this utility model;

[0023] Figure 7 This is an enlarged structural diagram of section B of the present invention.

[0024] In the diagram: 1. Chassis; 2. Dustproof baffle; 3. Collection box; 4. Debris cleaning mechanism; 41. Bearing; 42. Air pipe; 43. Nozzle; 44. Rotary joint; 45. Connecting pipe; 46. Drive assembly; 461. Slide rail; 462. Slide bar; 463. Rack; 464. Gear I; 465. Connecting rod; 466. Disc; 467. Rotating shaft; 468. Motor I; 5. Cylinder; 6. Chuck; 7. Gear ring; 8. Gear II; 9. Motor II; 10. Guide rod; 11. Adjusting platform; 12. Adjusting block; 13. Cutting blade; 14. Lead screw I; 15. Lead screw II; 16. Motor III; 17. Motor IV; 18. Control switch group. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-7This embodiment provides a technical solution: a thin-walled guide sleeve groove cutting device, including a housing 1. The annular groove on the left wall of the housing 1 is rotatably connected to the annular slip ring on the outer arc surface of the cylinder 5. A chuck 6 is provided at the right end of the cylinder 5 (the chuck 6 is a prior art three-jaw chuck, which includes a chuck body, jaws, a spiral groove, a large bevel gear, a small bevel gear, and an adjusting wrench. By rotating the adjusting wrench, the small bevel gear is driven to rotate, which in turn drives the meshing large bevel gear to rotate. The rotation of the large bevel gear will cause the jaws to move towards the center through the spiral groove on the right side of the large bevel gear, thereby clamping the workpiece). Symmetrical guide rods 10 are fixedly connected between the left and right inner walls of the housing 1. An adjusting table 11 is slidably connected between the guide rods 10. An adjusting block 12 is slidably connected to the upper end of the machine. A cutting blade 13 is provided on the left end of the adjusting block 12. A sliding rail 1 is provided on the rear side of the upper end of the machine housing 1, and a sliding rail 2 is provided on the lower side of the front end of the machine housing 1. A symmetrical box door is slidably connected between the sliding rail 1 and the sliding rail 2. The machine housing 1 also includes a debris cleaning mechanism 4. A control switch group 18 is provided on the right end of the machine housing 1. The input end of the control switch group 18 is electrically connected to an external power source. A gear ring 7 is fixedly sleeved on the outer wall of the left end of the cylinder 5. A motor 2 9 is provided on the bottom wall of the machine housing 1. A gear 2 8 is fixedly connected to the right end of the output shaft of the motor 2 9. The gear ring 7 is meshed with the gear 2 8. The input end of the motor 2 9 is electrically connected to the output end of the control switch group 18. A lead screw 14 is rotatably connected between the front and rear inner walls of the adjusting table 11. The lead screw 14 is connected to the adjusting... The lower middle of block 12 is threadedly connected to a threaded hole. A motor 3 16 is located at the rear end of the adjusting platform 11. The front end of the output shaft of motor 3 16 is fixedly connected to the rear end of lead screw 14. (A bellows is fixedly connected between the front wall of the adjusting platform 11 and the front end of the adjusting block 12, and between the rear wall of the adjusting platform 11 and the rear end of the adjusting block 12. The bellows is sleeved on the outside of lead screw 14, protecting it from debris entering and affecting its precision and sealing.) The input end of motor 3 16 is electrically connected to the output end of control switch group 18. A lead screw 2 15 is rotatably connected between the front and rear inner walls of the housing 1, and is threadedly connected to the threaded hole at the lower middle of the adjusting platform 11. Motor 4 17 is located at the right end of the chassis 1. The left end of the output shaft of motor 4 17 is fixedly connected to the right end of lead screw 2 15. (Corrugated pipes 2 are fixedly connected between the left wall of chassis 1 and the left end of adjustment table 11, and between the right end of adjustment table 11 and the right wall of chassis 1. Corrugated pipes 2 are respectively sleeved on the outside of lead screw 2 15. Corrugated pipes 2 protect lead screw 2 15 and prevent debris from entering the interior of lead screw 2 15, thus avoiding affecting the precision and sealing of lead screw 2 15.) The input end of motor 4 17 is electrically connected to the output end of control switch group 18. Dust baffles 2 are respectively provided in the middle of the front wall of chassis 1 and at the top and bottom of the rear wall of chassis 1. The front dust baffle 2 is located between the two rear dust baffles 2. A collection box 3 is slidably connected to the lower end of chassis 1.When performing groove cutting on the thin-walled guide sleeve, first open the cabinet door, then clamp the workpiece inside the chuck 6, holding the workpiece. Next, close the cabinet door. Then, by controlling the control switch group 18, motor 2 9 operates. The output shaft of motor 2 9 drives gear 2 8 to rotate. Gear 2 8, through the meshing gear ring 7, drives cylinder 5, supported by an annular slip ring and an annular groove, to rotate the chuck 6, thereby rotating the workpiece. Then, under the control of the control switch group 18, motor 4 17 operates. The output shaft of motor 4 17 drives lead screw 2 15 to rotate. Lead screw 2 15 drives adjusting table 11 to move horizontally along guide rod 10. Next, motor 3 16 operates. The output shaft of motor 3 16 drives lead screw 14 to rotate. Lead screw 14 drives adjusting block 12 and cutting tool 13 to move vertically, thereby performing groove cutting on the workpiece.

[0027] The debris cleaning mechanism 4 includes a bearing 41, an air pipe 42, a nozzle 43, a rotary joint 44, and a connecting pipe 45. The left and right inner walls of the housing 1 are rotatably connected by the bearing 41, with symmetrically arranged air pipes 42. The outer wall of the air pipes 42 is provided with evenly distributed nozzles 43. A rotary joint 44 is located at the right end of the air pipes 42, and a connecting pipe 45 is fixedly connected between the fixed ends of the rotary joints 44. The debris cleaning mechanism 4 also includes a drive assembly 46, which includes a slide rail 461, a slide bar 462, a rack 463, and a gear 464. The right end of the housing 1 has a slide rail 461, with a slide bar 462 slidably connected inside the slide rail 461. Racks 463 are located on the front and rear sides of the right end of the slide bar 462. The outer wall of the rotary joint 44 is fixedly connected to the slide rail 461. A gear 464 is fitted, and a rack 463 meshes with the longitudinally adjacent gear 464. The drive assembly 46 also includes a connecting rod 465, a disc 466, a rotating shaft 467, and a motor 468. The motor 468 is located on the right wall of the housing 1. The right end of the output shaft of the motor 468 is fixedly connected to the rotating shaft 467. The right end of the rotating shaft 467 is equipped with a disc 466. The edge of the right end of the disc 466 is rotatably connected to the lower side of the right end of the slide bar 462 via a pin. The input end of the motor 468 is electrically connected to the output end of the control switch group 18. After long-term use, a large amount of debris will accumulate on the four walls or cutting areas of the housing 1. The housing door is closed, and then an external air compressor is connected through the connecting pipe 45. Then, through the... When the control switch group 18 is activated, the external air compressor operates. As the rotor inside the air compressor rotates, the inter-tooth volume gradually increases, creating a vacuum. The intake valve opens, and air is drawn into the inter-tooth volume. As the rotor continues to rotate, the inter-tooth volume decreases, the air is compressed, and the pressure increases. When the inter-tooth volume reaches its minimum, the compressed air is discharged from the exhaust port. The compressed air passes through the connecting pipe 45, rotary joint 44, and air pipe 42 and is ejected from the nozzle 43. Then, under the control of the control switch group 18, motor 468 operates. The output shaft of motor 468 drives the rotating shaft 467 to rotate, which in turn drives the disc 466 to rotate. The disc 466, through the connecting rod 465, drives the slide bar 462 to reciprocate linearly within the slide rail 461. (When the disc 466 and the connecting rod...) When the connection point of 465 is at the six o'clock position, the slider 462 is in its initial state. When the connection point of the disc 466 and the connecting rod 465 rotates clockwise to the nine o'clock position, the connecting rod 465 will push the slider 462 to slide upward inside the slide rail 461. When the connection point of the disc 466 and the connecting rod 465 continues to rotate clockwise to the twelve o'clock position, the slider 462 is in its initial state. When the connection point of the disc 466 and the connecting rod 465 continues to rotate clockwise to the three o'clock position, the connecting rod 465 will pull the slider 462 to slide downward inside the slide rail 461. The slider 462 will slide up and down. The rack 463 on the slider 462 meshes with the gear 464, which drives the air tube 42 to swing back and forth through the rotary joint 44.High-pressure gas is ejected from nozzles 43 through air pipes 42. Both sets of nozzles 43 are horizontal, with the front set pointing forward and the rear set pointing backward. The front set of nozzles 43 then rotates counter-clockwise, and the rear set rotates clockwise, thus blowing debris downwards from the front and rear walls. The debris falls along the dust baffles 2 into the collection box 3. The staggered dust baffles 2 prevent secondary re-entrainment of debris and reduce airflow reflection interference. After a period of collection, the collection box 3 is removed for further processing.

[0028] The working principle of the thin-walled guide sleeve groove cutting device provided by this utility model is as follows: When cutting the groove of the thin-walled guide sleeve, first open the box door, then clamp the workpiece inside the chuck 6 to hold the workpiece, then close the box door, then operate the motor 9 by controlling the control switch group 18, the output shaft of the motor 9 drives the gear 8 to rotate, the gear 8 drives the cylinder 5 to rotate under the support of the annular slip ring and the annular slip groove through the meshing gear ring 7, thereby driving the chuck 6 to rotate, and thus driving the workpiece to rotate. Then, under the control of the control switch group 18, the motor 17 operates, the output shaft of the motor 17 drives the lead screw 15 to rotate, the lead screw 15 drives the adjusting table 11 to move horizontally along the guide rod 10. Then the motor 16 operates, the motor... The output shaft of the 316 drives the lead screw 14 to rotate. The lead screw 14 drives the adjusting block 12 and the cutting tool 13 to move vertically, thereby performing groove cutting on the workpiece. After long-term use, a large amount of debris will accumulate on the four walls of the machine casing 1 or in the cutting area. The casing door is closed, and then an external air compressor is connected through the connecting pipe 45. Then, by controlling the control switch group 18, the external air compressor operates. When the rotor inside the air compressor rotates, the inter-tooth volume gradually increases, forming a vacuum. The intake valve opens, and air is drawn into the inter-tooth volume. As the rotor continues to rotate, the inter-tooth volume decreases, the air is compressed, and the pressure increases. When the inter-tooth volume decreases to its minimum, the compressed air is discharged from the exhaust port. The compressed air will pass through the connecting pipe 45, the rotary joint 44, and the air pipe 42 and be ejected from the nozzle 43. Then, under the control of the control switch group 18, motor 468 operates. The output shaft of motor 468 drives the rotating shaft 467 to rotate, which in turn drives the disc 466 to rotate. The disc 466 drives the slider 462 to reciprocate linearly within the slide rail 461 via the connecting rod 465. When the connection point between the disc 466 and the connecting rod 465 is at the six o'clock position, the slider 462 is in its initial state. When the connection point between the disc 466 and the connecting rod 465 rotates clockwise to the nine o'clock position, it will push the slider 462 upward within the slide rail 461 via the connecting rod 465. When the connection point between the disc 466 and the connecting rod 465 continues to rotate clockwise to the twelve o'clock position, the slider 462 is in its initial state. When the connection point of the connecting rod 465 continues to rotate clockwise to the three o'clock position, the connecting rod 465 will pull the slider 462 to slide downward inside the slide rail 461. The slider 462 will slide up and down. The rack 463 on the slider 462 meshes with the gear 464, which drives the air pipe 42 to swing back and forth through the rotary joint 44. High-pressure gas is ejected from the nozzle 43 through the air pipe 42. The jet direction of both sets of nozzles 43 is horizontal. The jet direction of the front set of nozzles 43 is forward, and the jet direction of the rear set of nozzles 43 is backward. Then, the front set of nozzles 43 rotates counterclockwise, and the rear set of nozzles 43 rotates clockwise, thereby blowing the debris on the front and rear walls downward. The debris will fall down the dust baffle 2 into the collection box 3.The staggered dust baffles 2 will prevent secondary re-entrainment of debris and reduce airflow reflection interference. After a period of collection, the collection box 3 can be removed for further processing.

[0029] It is worth noting that, in the embodiments disclosed above, motor 468, motor 9, motor 16, and motor 17, motor 468 can be a 35BYJ412H, and motors 9, 16, and 17 can all be YS8024. The control switch group 18 is provided with switch buttons that correspond one-to-one with motors 468, 9, 16, and 17 and are used to control their switching operation.

[0030] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A thin-walled guide sleeve groove cutting device, comprising a housing (1), wherein an annular groove on the left wall of the housing (1) is rotatably connected to an annular slip ring on the outer arc surface of a cylinder (5), a chuck (6) is provided at the right end of the cylinder (5), and symmetrical guide rods (10) are fixedly connected between the left and right inner walls of the housing (1), an adjusting table (11) is slidably connected between the guide rods (10), an adjusting block (12) is slidably connected to the upper end of the adjusting table (11), and a cutting blade (13) is provided at the left end of the adjusting block (12), characterized in that: It also includes a debris cleaning mechanism (4); Debris cleaning mechanism (4): It includes bearing (41), air pipe (42), nozzle (43), rotary joint (44) and connecting pipe (45). The left and right inner walls of the housing (1) are rotatably connected by bearing (41) with symmetrical air pipes (42). The outer wall of the air pipe (42) is provided with evenly distributed nozzles (43). The right end of the air pipe (42) is provided with rotary joint (44). The fixed ends of the rotary joint (44) are fixedly connected with connecting pipe (45).

2. The thin-walled guide sleeve groove cutting device according to claim 1, characterized in that: The right end of the chassis (1) is provided with a control switch group (18), and the input end of the control switch group (18) is electrically connected to an external power supply.

3. The thin-walled guide sleeve groove cutting device according to claim 2, characterized in that: The debris cleaning mechanism (4) further includes a drive assembly (46), which includes a slide rail (461), a slide bar (462), a rack (463), and a gear (464). The right end of the housing (1) is provided with a slide rail (461), and the slide bar (462) is slidably connected inside the slide rail (461). The front and rear sides of the right end of the slide bar (462) are respectively provided with racks (463). The outer wall of the rotary joint (44) is respectively fixedly fitted with gears (464), and the racks (463) are respectively meshed with the longitudinally adjacent gears (464).

4. The thin-walled guide sleeve groove cutting device according to claim 3, characterized in that: The drive assembly (46) also includes a connecting rod (465), a disc (466), a rotating shaft (467), and a motor (468). The right wall of the housing (1) is provided with a motor (468). The right end of the output shaft of the motor (468) is fixedly connected to the rotating shaft (467). The right end of the rotating shaft (467) is provided with a disc (466). The edge of the right end of the disc (466) is rotatably connected to the lower side of the right end of the slide bar (462) by a pin. The input end of the motor (468) is electrically connected to the output end of the control switch group (18).

5. The thin-walled guide sleeve groove cutting device according to claim 2, characterized in that: A gear ring (7) is fixedly sleeved on the outer wall of the left end of the cylinder (5), and a motor (9) is provided on the bottom wall of the housing (1). A gear (8) is fixedly connected to the right end of the output shaft of the motor (9). The gear ring (7) meshes with the gear (8), and the input end of the motor (9) is electrically connected to the output end of the control switch group (18).

6. The thin-walled guide sleeve groove cutting device according to claim 2, characterized in that: A lead screw (14) is rotatably connected between the front and rear inner walls of the adjustment platform (11). The lead screw (14) is threadedly connected to the threaded hole at the lower middle part of the adjustment block (12). A motor (16) is provided at the rear end of the adjustment platform (11). The front end of the output shaft of the motor (16) is fixedly connected to the rear end of the lead screw (14). The input end of the motor (16) is electrically connected to the output end of the control switch group (18).

7. The thin-walled guide sleeve groove cutting device according to claim 2, characterized in that: A lead screw 2 (15) is rotatably connected between the front and rear inner walls of the chassis (1). The lead screw 2 (15) is threadedly connected to the threaded port at the lower middle of the adjustment table (11). A motor 4 (17) is provided at the right end of the chassis (1). The left end of the output shaft of the motor 4 (17) is fixedly connected to the right end of the lead screw 2 (15). The input end of the motor 4 (17) is electrically connected to the output end of the control switch group (18).

8. The thin-walled guide sleeve groove cutting device according to claim 1, characterized in that: The front wall of the chassis (1) is provided with dustproof baffles (2) at the middle and the rear wall of the chassis (1) at the top and bottom respectively. The front dustproof baffle (2) is located between the two rear dustproof baffles (2). A collection box (3) is slidably connected to the lower end of the chassis (1).

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