A bearing balling device

Abstract

The utility model discloses a bearing adds ball device, including dust extraction, vibration dish, L shape feeding track and first material frame, second material frame and third material frame who arrange in turn side by side, L shape feeding track includes vibration feeding section and static electricity removal purging section, utilize dust extraction to remove the dust on the surface of ball in vibration feeding section, utilize ion fan to remove the static electricity on the surface of ball of static electricity removal purging section, the first material frame, second material frame and third material frame top all are provided with two opposite and parallel distribution's screening bar, and a plurality of screening bars are coplanarly arranged, and the interval between the corresponding two screening bars on the first material frame is less than the interval between the corresponding two screening bars on the second material frame, and the interval between the corresponding two screening bars on the second material frame is less than the interval between the corresponding two screening bars on the third material frame. Have the effect that improve screening efficiency and precision, save manual cost, effectively remove the dust and static electricity on the surface of ball to prolong the service life of ball bearing.

Description

Technical Field

[0001] This utility model relates to the field of ball bearing processing technology, and in particular to a bearing ball-rolling device. Background Technology

[0002] like Figure 1 The diagram illustrates a bearing assembly device in the prior art, comprising an outer ring feeding module 91, an inner ring feeding module 92, a ball filling module 93, a ball positioning module 94, and a cage assembly module 95. The outer ring feeding module 91 and the inner ring feeding module 92 feed the outer and inner rings onto a conveyor track, allowing the outer ring to be fitted over the inner ring and transported to below the ball filling module 93. The ball filling module 93 then fills the inner and outer rings with a predetermined number of balls. The ball positioning module 94 then divides and positions the balls between the inner and outer rings. Finally, the cage is pressed and assembled between the inner and outer rings, completing the assembly of the inner ring, outer ring, balls, and cage. In the prior art, the feed end of the ball filling module 93 is connected to a feed frame 4 via a feed pipe 412. A feed control valve 411 controls the connection between the bottom of the feed frame 4 and the feed inlet of the feed pipe 412. The quantity of balls to be fed varies depending on the model of the ball bearing, which corresponds to different ball sizes. To achieve the feeding of balls of different diameters, multiple feeding boxes are usually set up, each filled with balls of the corresponding diameter. During bearing assembly, the feeding control valve 411 at the bottom of the corresponding feeding box is opened according to the need for balls of different diameters, thereby achieving the feeding of balls of the corresponding diameter. However, the preparation work is usually quite cumbersome, requiring manual pre-screening and sorting of balls of different diameters, and pouring balls of the same diameter into the corresponding feeding frame 4. The labor cost is high, and misscreening is prone to occur, resulting in a feeding box containing balls of different diameters. In addition, during the transfer process, static electricity will form on the surface of the balls and attract dust and impurities from the air, making the assembled ball bearing prone to jamming during rotation, leading to accelerated wear and reduced service life. This situation urgently needs improvement. Utility Model Content

[0003] The purpose of this invention is to provide a bearing ball bearing device that improves screening efficiency and accuracy, saves labor costs, effectively removes dust and static electricity from the ball bearing surface, thereby extending the service life of the ball bearing.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a bearing ball bearing device, comprising a dust collection device and a vibrating plate, an L-shaped feeding track and a plurality of unloading frames connected in sequence. The unloading frames have a material cavity. The L-shaped feeding track includes a vibrating feeding section connected to the discharge end of the vibrating plate and an antistatic blowing section bent and connected to the discharge end of the vibrating feeding section. The dust collection device is used to remove dust from the surface of the balls in the vibrating feeding section. The antistatic blowing section is provided with an ion fan for blowing and removing static electricity from the surface of the balls, and the ion fan is used to blow the balls in the antistatic blowing section to the unloading frames. The feeding frame includes a first feeding frame, a second feeding frame, and a third feeding frame arranged side by side. Each of the first feeding frame, the second feeding frame, and the third feeding frame has two opposing and parallel screening rods inclined above it. A plurality of the screening rods are arranged on the same plane, and a material dropping gap is formed between the two opposing and parallel screening rods. The screening rods are inclined downward from the feeding end to the discharging end, and the distance between two corresponding screening rods on the first feeding frame is smaller than the distance between two corresponding screening rods on the second feeding frame, and the distance between two corresponding screening rods on the second feeding frame is smaller than the distance between two corresponding screening rods on the third feeding frame.

[0005] By adopting the above technical solution, the vibratory feeder transports balls of different diameters from the vibratory feeding section of the L-shaped feeding track to the anti-static blowing section through vibration. During the transportation process in the vibratory feeding section, the balls are cleaned of surface dust and impurities by a dust collection device. Then, the air pressure generated by the ion blower pushes the balls from the anti-static blowing section to the two screen bars on the first material frame. At the same time, the ion blower removes static electricity from the surface of the balls, improving the service life of the ball bearings. When the balls roll onto the two screen bars on the first material frame, balls with a diameter equal to or smaller than the distance between the corresponding two screen bars on the first material frame fall into the first material frame. Then, the balls with a diameter greater than the distance between the two corresponding screen rods on the first material frame continue to roll towards the second material frame, while the balls with a diameter equal to or smaller than the distance between the two corresponding screen rods on the second material frame fall into the second material frame. Finally, the balls with a diameter greater than the distance between the two corresponding screen rods on the second material frame continue to roll towards the third material frame, while the balls with a diameter equal to or smaller than the distance between the two corresponding screen rods on the third material frame fall into the third material frame. This achieves automatic screening of balls of different diameters, which improves screening efficiency and accuracy, saves labor costs, and effectively removes dust and static electricity from the ball surface, thereby extending the service life of the ball bearing.

[0006] A further feature of this invention is that: a screen is inclinedly provided below the material drop gap in the feeding frame, the mesh opening of the screen is smaller than the material drop gap between the two corresponding screen rods above the feeding frame, a material passage is formed between the screen and the side wall of the feeding frame, and an L-shaped partition is provided below the screen in the feeding frame, the L-shaped partition and the feeding frame enclosing a receiving space that communicates with the mesh opening of the screen.

[0007] By adopting the above technical solution, the screening mesh can perform secondary screening of the balls falling into the corresponding first, second, and third material frames. Balls with a diameter smaller than the distance between the two screening rods on the corresponding material feeding frame are screened and fall into the receiving space through the mesh of the screening mesh. Balls with a diameter equal to the material feeding gap between the two screening rods on the corresponding material feeding frame cannot pass through the screening mesh and roll on the surface of the screening mesh and slide down into the material cavity for collection through the material passage.

[0008] A further feature of this invention is that the outer wall of the feeding frame is provided with a pull-out hole that connects to the receiving space, and a receiving tray is provided in the feeding frame in a pull-out manner. The receiving tray is detachably installed in the receiving space through the pull-out hole.

[0009] By adopting the above technical solution, it is convenient to remove the receiving tray from the feeding frame and clean the balls that do not meet the size requirements.

[0010] A further feature of this invention is that the receiving tray is made of transparent organic glass, and the outer wall of the unloading frame is provided with a transparent viewing window corresponding to the receiving tray.

[0011] By adopting the above technical solution, operators can clearly observe the ball bearing material level in the receiving tray, thereby determining whether the receiving tray needs to be cleaned.

[0012] A further feature of this invention is that the outer wall of the receiving tray is provided with a pull-out handle.

[0013] A further feature of this invention is that: a guide plate is provided on the top of the feeding frame on the outer side of the two screen rods, the guide plate is inclined downward from the end closer to the screen rod to the end farther away from the screen rod, and a collection track is inclined along the edge of the guide plate, the collection track is gradually inclined downward from the first material frame to the third material frame.

[0014] By adopting the above technical solution, the balls that accidentally slide off the screen bar to both sides are collected by the collection track.

[0015] A further feature of this invention is that: a first baffle is provided on the top of the first material frame near the anti-static blowing section, and a second baffle is provided on the top of the third material frame away from the anti-static blowing section; the ball bearings on the guide plate are stopped and prevented from detaching from the first baffle.

[0016] By adopting the above technical solution, the first baffle and the second baffle can effectively prevent the balls from rolling off the ends of the first and third material frames.

[0017] A further feature of this invention is that: the end of the collection track on both sides away from the static elimination blowing section is connected to a return track, and the discharge end of the return track is connected to a hoist, which is used to lift the balls rolling off the discharge end of the return track into the vibrating plate.

[0018] By adopting the above technical solution, the balls that fall into the collection track can roll down to the elevator through the return track, and then be lifted by the elevator and transported back to the vibratory plate.

[0019] A further feature of this invention is that a ball bearing collection frame is provided on the side of the third material frame away from the static electricity removal blowing section, and the ball bearing collection frame is used to collect the balls that roll off the discharge ends of the two screen rods on the third material frame.

[0020] By adopting the above technical solution, since the gap between the two screen rods above the third material frame is larger than that between the first and second material frames, the balls that roll off from the discharge ends of the two screen rods above the third material frame have a larger diameter than the balls in the first, second, and third material frames, and do not meet the diameter requirements. Therefore, the ball collection frame collects these balls with excessively large diameters separately.

[0021] A further feature of this invention is that the dust collection device includes a vacuum dust collection box and a flexible hose connected to the dust collection port of the vacuum dust collection box. The bottom of the vibrating feeding section of the L-shaped feeding track is provided with several suction holes, and the suction holes are connected to the vacuum dust collection box through the flexible hose.

[0022] In summary, this utility model has the following beneficial effects: A series of unloading frames are connected to the discharge port of a vibratory feeder via an L-shaped feeding track. The unloading frames include a first frame, a second frame, and a third frame arranged side-by-side. The L-shaped feeding track includes a vibratory feeding section and an anti-static blowing section. A dust collection device removes dust from the surface of the ball bearings in the vibratory feeding section, and an ion blower removes static electricity from the surface of the ball bearings in the anti-static blowing section, thus improving the service life of the ball bearings. Each unloading frame has two opposing and parallel screening rods inclined above it. These screening rods are coplanar, and the distance between corresponding screening rods on the first frame is smaller than the distance between corresponding screening rods on the second frame, and the distance between corresponding screening rods on the second frame is smaller than the distance between corresponding screening rods on the third frame. The spacing between the balls is adjusted; the air pressure generated by the ion blower pushes the balls from the anti-static blowing section to the two screening rods on the first material frame. At this time, the balls with a diameter equal to or smaller than the spacing between the corresponding two screening rods on the first material frame fall into the first material frame. The balls with a diameter larger than the spacing between the corresponding two screening rods on the first material frame continue to roll towards the second material frame. The balls with a diameter equal to or smaller than the spacing between the corresponding two screening rods on the second material frame fall into the second material frame. Finally, the balls with a diameter larger than the spacing between the corresponding two screening rods on the second material frame continue to roll towards the third material frame. The balls with a diameter equal to or smaller than the spacing between the corresponding two screening rods on the third material frame fall into the third material frame. This achieves automatic screening of balls of different diameters, which has the effects of improving screening efficiency and accuracy, saving labor costs, effectively removing dust and static electricity from the surface of the balls, and thus extending the service life of the ball bearings. Attached Figure Description

[0023] Figure 1 It is a bearing assembly device in the existing technology.

[0024] Figure 2 This is a structural diagram of the present invention.

[0025] Figure 3 This is an assembly drawing of the material feeding frame, ball bearing collecting frame, guide plate, and collecting track of this utility model.

[0026] Figure 4 This is a utility model Figure 3 Top view.

[0027] Figure 5 This is a utility model Figure 4 A sectional view of section AA in the middle.

[0028] In the diagram: 1. Vibratory feeder; 2. L-shaped feeding track; 21. Vibratory feeding section; 211. Suction hole; 22. Static electricity removal blowing section; 3. Dust collection device; 31. Vacuum dust removal box; 32. Flexible hose; 4. Discharge frame; 401. First material frame; 4011. First baffle; 402. Second material frame; 403. Third material frame; 4031. Second baffle; 41. Material chamber; 411. Discharge control valve; 412. Discharge pipe; 42. Screening rod; 420. Discharge gap; 421. Feeding end; 422. Discharge end; 43. Material passage; 44. L-shaped partition; 441. Receiving space; 45. Pull-out hole; 451. Receiving tray; 4511. Pull-out handle; 46. Transparent viewing window; 47. Guide ramp; 48. Collection track; 49. Screen; 5. Ionizing fan; 6. Return track; 7. Elevator; 8. Ball bearing collection frame; 91. Outer ring feeding module; 92. Inner ring feeding module; 93. Ball bearing filling module; 94. Ball bearing positioning module; 95. Cage assembly module. Detailed Implementation

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

[0030] A bearing with ball bearing assembly, such as Figures 2-5As shown, the device includes a dust collection device 3 and a vibratory feeder 1, an L-shaped feeding track 2, and several unloading frames 4 connected in sequence. Each unloading frame 4 has a material cavity 41. The L-shaped feeding track 2 includes a vibratory feeding section 21 connected to the discharge end 422 of the vibratory feeder 1 and a static-eliminating blowing section 22 bent and connected to the discharge end 422 of the vibratory feeding section 21. The dust collection device 3 is used to remove dust from the surface of the balls in the vibratory feeding section 21. The inlet end 421 of the static-eliminating blowing section 22 is equipped with an ion fan 5 for blowing away and removing static electricity from the surface of the balls. The ion fan 5 is used to remove dust from the surface of the balls in the static-eliminating blowing section 22. The ball bearings are blown down to the feed frame 4; the feed frame 4 includes a first feed frame 401, a second feed frame 402, and a third feed frame 403 arranged side by side. Each of the first, second, and third feed frames 401 and 402 has two opposing and parallel screening rods 42 inclinedly positioned above it. All six screening rods 42 are coplanar, and a material drop gap 420 is formed between two opposing and parallel screening rods 42. The screening rods 42 are inclined downwards from the feed end 421 towards the discharge end 422, and the distance between two corresponding screening rods 42 on the first feed frame 401 is smaller than that on the second feed frame 401. The spacing between the two corresponding screening rods 42 on the second material frame 402 is smaller than the spacing between the two corresponding screening rods 42 on the third material frame 403. A ball bearing collection frame 8 is provided on the side of the third material frame 403 away from the electrostatic eliminator blowing section 22. The ball bearing collection frame 8 is used to collect the balls rolling off the discharge ends 422 of the two corresponding screening rods 42 on the third material frame 403. Because the material drop gap 420 between the two screening rods 42 above the third material frame 403 is larger than that between the first material frame 401 and the second material frame 402, therefore... The balls that roll off the discharge ends 422 of the two screen rods 42 above the third material frame 403 are larger in diameter than the balls in the first material frame 401, the second material frame 402 and the third material frame 403, and do not meet the diameter requirements. Therefore, the ball collection frame 8 collects these balls with excessively large diameters separately. The dust collection device 3 includes a vacuum dust collection box 31 and a hose 32 connected to the dust collection port of the vacuum dust collection box 31. The bottom of the vibrating feeding section 21 of the L-shaped feeding track 2 is provided with several suction holes 211, which are connected to the vacuum dust collection box 31 through the hose 32.

[0031] like Figures 3-5As shown, a screen 49 is inclined below the material drop gap 420 of the feeding frame 4. The mesh gap of the screen 49 is smaller than the material drop gap 420 between the two corresponding screen rods 42 above the feeding frame 4. A material passage 43 is formed between the screen 49 and the side wall of the feeding frame 4. An L-shaped partition 44 is provided below the screen 49 of the feeding frame 4. The L-shaped partition 44 and the feeding frame 4 enclose a receiving space 441 that is connected to the mesh of the screen 49. The screen 49 can perform secondary screening on the balls falling into the corresponding first material frame 401, second material frame 402 and third material frame 403, screening balls with a diameter smaller than the distance between the two screen rods 42 on the corresponding feeding frame 4, so that they fall into the receiving space 441 through the mesh of the screen 49. The diameter of the balls is equal to the distance between the two screen rods 42 on the corresponding feeding frame 4. The balls in the material drop gap 420 between the two cannot pass through the screen 49, but roll on the surface of the screen 49 and slide down into the material cavity 41 through the material passage 43 for collection; the outer wall of the feeding frame 4 has a pull hole 45 that connects to the receiving space 441, and the feeding frame 4 has a pull-out receiving tray 451. The receiving tray 451 is detachably installed in the receiving space 441 through the pull hole 45, which makes it easy to pull out the receiving tray 451 from the feeding frame 4 and clean the balls that do not meet the size requirements; the receiving tray 451 is made of transparent organic glass, and the outer wall of the feeding frame 4 has a transparent viewing window 46 corresponding to the receiving tray 451, which makes it easy for the operator to clearly observe the position of the balls in the receiving tray 451, so as to determine whether the receiving tray 451 needs to be cleaned; the outer wall of the receiving tray 451 has a pull handle 4511.

[0032] like Figures 2-5 As shown, the top of the feeding frame 4 has guide plates 47 facing each other on the outer sides of the two screening rods 42. The guide plates 47 slope downward from the end near the screening rods 42 to the end away from the screening rods 42. The edge of the guide plates 47 is provided with a collection track 48. The collection track 48 slopes downward from the first material frame 401 to the third material frame 403. The balls that accidentally slide off the screening rods 42 to the sides are collected by the collection track 48. The top of the first material frame 401 near the static eliminator blowing section 22 has a first baffle 4011, and the top of the third material frame 403 away from the static eliminator blowing section 22 has a second baffle 403. 1. The balls on the guide plate 47 are stopped and prevented from detaching from the first baffle 4011. The first baffle 4011 and the second baffle 4031 can effectively prevent the balls from rolling off the ends of the first material frame 401 and the third material frame 403. The end of the two side collection rails 48 away from the static elimination blowing section 22 is connected to the return rail 6. The discharge end 422 of the return rail 6 is connected to the elevator 7. The elevator 7 is used to lift the balls that roll off the discharge end 422 of the return rail 6 to the vibrating plate 1, so that the balls that slide into the collection rail 48 can roll off the return rail 6 to the elevator 7, and then be lifted by the elevator 7 and transported back to the vibrating plate 1.

[0033] The basic working principle of this utility model is as follows: Several unloading frames 4 are connected to the discharge port of the vibratory feeder 1 via an L-shaped feeding track 2. Each unloading frame 4 includes a first frame 401, a second frame 402, and a third frame 403 arranged side-by-side. The L-shaped feeding track 2 includes a vibrating feeding section 21 and an anti-static blowing section 22. A dust collection device 3 removes dust from the surface of the balls in the vibrating feeding section 21, and an ion fan 5 removes static electricity from the surface of the balls in the anti-static blowing section 22, thereby improving the service life of the ball bearings. The unloading frames 4 include the first frame 401, the second frame 402, and the third frame 403 arranged side-by-side. Above the first material frame 401, the second material frame 402, and the third material frame 403, two opposing and parallel screening rods 42 are inclinedly arranged. Several screening rods 42 are coplanar, and the distance between corresponding screening rods 42 on the first material frame 401 is smaller than the distance between corresponding screening rods 42 on the second material frame 402, and the distance between corresponding screening rods 42 on the second material frame 402 is smaller than the distance between corresponding screening rods 42 on the third material frame 403. The vibrating plate 1 transports balls of different diameters from the vibrating feeding section 21 of the L-shaped feeding track 2 to the static electricity removal blowing section 22 via vibration. The balls vibrate... During transport in the moving feeding section 21, dust and impurities on the surface are removed by the dust collection device 3. Then, the air pressure generated by the ion blower 5 pushes the ball bearings from the static elimination blowing section 22 to the two screening rods 42 on the first material frame 401. At the same time, the ion blower 5 removes static electricity from the surface of the ball bearings, improving the service life of the ball bearings. When the ball bearings roll onto the two screening rods 42 on the first material frame 401, the ball bearings with a diameter equal to or smaller than the distance between the corresponding two screening rods 42 on the first material frame 401 fall into the first material frame 401. Then, the ball bearings with a diameter larger than the distance between the corresponding two screening rods 42 on the first material frame 401 continue to roll. The balls roll towards the second material frame 402. Balls with a diameter equal to or smaller than the distance between the two corresponding screening rods 42 on the second material frame 402 fall into the second material frame 402. Finally, balls with a diameter larger than the distance between the two corresponding screening rods 42 on the second material frame 402 continue to roll towards the third material frame 403. Balls with a diameter equal to or smaller than the distance between the two corresponding screening rods 42 on the third material frame 403 fall into the third material frame 403. This achieves automatic screening of balls of different diameters, which improves screening efficiency and accuracy, saves labor costs, and effectively removes dust and static electricity from the surface of the balls, thereby extending the service life of the ball bearings.

[0034] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A bearing with ball bearing assembly, characterized in that: The device includes a dust collection device (3) and a vibrating plate (1), an L-shaped feeding track (2) and several unloading frames (4) connected in sequence. The unloading frame (4) has a material cavity (41). The L-shaped feeding track (2) includes a vibrating feeding section (21) connected to the discharge end of the vibrating plate (1) and an antistatic blowing section (22) bent and connected to the discharge end of the vibrating feeding section (21). The dust collection device (3) is used to remove dust from the surface of the balls in the vibrating feeding section (21). The antistatic blowing section (22) is equipped with an ion fan (5) for blowing and removing static electricity from the surface of the balls. The ion fan (5) is used to blow the balls in the antistatic blowing section (22) into the unloading frame (4). The feeding frame (4) includes a first feeding frame (401), a second feeding frame (402), and a third feeding frame (403) arranged side by side. Each of the first feeding frame (401), the second feeding frame (402), and the third feeding frame (403) has two opposing and parallel screening rods (42) arranged at an incline. A plurality of the screening rods (42) are arranged on the same plane. A material drop gap (420) is formed between the two opposing and parallel screening rods (42). The screening rods (42) are arranged at an incline downward from the feeding end to the discharging end. The distance between the two corresponding screening rods (42) on the first feeding frame (401) is smaller than the distance between the two corresponding screening rods (42) on the second feeding frame (402). The distance between the two corresponding screening rods (42) on the second feeding frame (402) is smaller than the distance between the two corresponding screening rods (42) on the third feeding frame (403).

2. The bearing ball bearing device according to claim 1, characterized in that: The feeding frame (4) is provided with a screen (49) at an incline below the material drop gap (420). The mesh gap of the screen (49) is smaller than the material drop gap (420) between the two screen rods (42) above the feeding frame (4). A material passage (43) is formed between the screen (49) and the side wall of the feeding frame (4). The feeding frame (4) is provided with an L-shaped partition (44) below the screen (49). The L-shaped partition (44) and the feeding frame (4) enclose a receiving space (441) that is connected to the mesh of the screen (49).

3. The bearing ball bearing device according to claim 2, characterized in that: The outer wall of the feeding frame (4) is provided with a pull-out hole (45) that connects to the receiving space (441). The feeding frame (4) is provided with a pull-out receiving tray (451). The receiving tray (451) is detachably installed in the receiving space (441) through the pull-out hole (45).

4. The bearing ball bearing device according to claim 3, characterized in that: The receiving tray (451) is made of transparent organic glass material, and the outer wall of the unloading frame (4) is provided with a transparent viewing window (46) corresponding to the receiving tray (451).

5. A bearing ball bearing device according to claim 3, characterized in that: The outer wall of the receiving tray (451) is provided with a pull handle (4511).

6. The bearing ball bearing device according to claim 1, characterized in that: The top of the feeding frame (4) is provided with a guide plate (47) on the outside of the two screen rods (42). The guide plate (47) is inclined downward from the end near the screen rod (42) to the end away from the screen rod (42). The edge of the guide plate (47) is provided with a collection track (48). The collection track (48) is inclined downward from the first material frame (401) to the third material frame (403).

7. A bearing ball bearing device according to claim 6, characterized in that: The first material frame (401) has a first baffle (4011) on the top of the side near the static elimination blowing section (22), and the third material frame (403) has a second baffle (4031) on the top of the side away from the static elimination blowing section (22). The ball bearings on the guide plate (47) stop and prevent detachment from the first baffle (4011).

8. A bearing ball bearing device according to claim 6, characterized in that: The end of the collection track (48) on both sides away from the static elimination blowing section (22) is connected to the return track (6). The discharge end of the return track (6) is connected to the elevator (7). The elevator (7) is used to lift the balls rolling off the discharge end of the return track (6) into the vibrating plate (1).

9. A bearing ball bearing device according to claim 1, characterized in that: The third material frame (403) is provided with a ball collecting frame (8) on the side away from the static elimination blowing section (22). The ball collecting frame (8) is used to collect the balls that roll off the discharge ends of the two screen rods (42) on the third material frame (403).

10. A bearing ball bearing device according to claim 1, characterized in that: The dust collection device (3) includes a vacuum dust collection box (31) and a hose (32) connected to the dust collection port of the vacuum dust collection box (31). The bottom of the vibrating feeding section (21) of the L-shaped feeding track (2) is provided with a plurality of suction holes (211). The suction holes (211) are connected to the vacuum dust collection box (31) through the hose (32).

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