Magnetic plate chain conveyor line for automotive assembly lines

Abstract

This invention relates to the field of automotive assembly line technology and discloses a magnetic plate chain conveyor line for automotive assembly lines, comprising a support base and a magnetic plate chain disposed on the support base. The support base includes a base plate, with support columns fixedly mounted at the four corners of the upper surface of the base plate. Two support columns on the same side are fixedly connected to crossbeams at their upper ends. Drive shafts are rotatably connected to both ends of the two crossbeams. The magnetic plate chain is respectively sleeved on the two drive shafts at both ends. A first motor is located at the rear of the support base, and the output end of the first motor is connected to one of the drive shafts. The first motor drives the drive shaft to rotate, thereby driving the magnetic plate chain to rotate and achieving the conveying function. This invention improves conveying stability: the magnetic plate chain magnetically attracts automotive parts or the entire vehicle, effectively preventing swaying and offset, improving assembly accuracy, and adapting to the assembly needs of different vehicle models, thus improving the versatility of the conveyor line.

Description

Technical Field

[0001] This invention relates to the field of automotive assembly line technology, specifically to a magnetic plate chain conveyor line for automotive assembly lines. Background Technology

[0002] In the automobile manufacturing process, the efficient operation of assembly lines is crucial for improving production efficiency and product quality. Traditional automobile assembly line conveyor systems have several problems, such as insufficient conveyor stability, poor adaptability to different vehicle models, and high maintenance costs.

[0003] Currently, some conveyor lines are prone to shaking and shifting when transporting automotive parts or complete vehicles. Automotive parts are susceptible to shaking, collisions, or falling during transport. Furthermore, adjusting the conveyor line is complex and time-consuming when switching between different vehicle models for assembly. In addition, components on traditional conveyor lines wear out quickly, requiring frequent replacement and maintenance, which increases production costs.

[0004] Meanwhile, debris, paint, oil stains, or metal shavings can easily fall onto the conveyor line. If these debris are not cleaned up, they can damage the car parts being transported later.

[0005] Based on this, we designed a magnetic plate chain conveyor line for automotive assembly lines. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a magnetic plate chain conveyor line for automotive assembly lines, which improves the stability and safety of transporting automotive assembly components, while ensuring the cleanliness and flatness of the magnetic plate chain and preventing debris from damaging the automotive assembly components.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A magnetic plate chain conveyor line for automobile assembly lines includes a support base and a magnetic plate chain disposed on the support base. The support base includes a base plate, with support columns fixedly disposed at the four corners of the upper surface of the base plate. Two support columns on the same side are fixedly connected to the upper ends of crossbeams, and drive shafts are rotatably connected to the two ends of the two crossbeams. The two ends of the magnetic plate chain are respectively sleeved on the two drive shafts. A first motor is disposed on the rear side of the support base, and the output end of the first motor is connected to one of the drive shafts. The first motor drives the drive shaft to rotate, thereby driving the magnetic plate chain to rotate and realizing the conveying function.

[0009] The magnetic plate chain includes several magnetic plates with magnetic adsorption function. Each magnetic plate has multiple connecting protrusions on one side and multiple connecting grooves on the other side. The connecting protrusions of each magnetic plate are inserted into the connecting grooves of adjacent magnetic plates and are connected by a rotating shaft to form a complete plate chain.

[0010] During the use of automotive assembly lines, if it is necessary to transport automotive body side panels, chassis, body electrophoresis, etc., the robotic arm places them on magnetic plate chains. The magnetic plates with magnetic adsorption function adsorb the automotive assembly parts, so that the automotive assembly parts will not slip or shift during transportation, ensuring transportation safety. Moreover, when assembling different models, there is no need to adjust the conveyor line.

[0011] Preferably, the drive shaft is provided with multiple drive wheels, which are evenly spaced apart. The outer surface of the drive wheels is provided with tooth grooves, and the inner surface of the magnetic plate is provided with strip-shaped protrusions. In use, the protrusions are engaged in the tooth grooves, so that the rotation of the drive wheels can stably drive the magnetic plate chain to rotate.

[0012] Preferably, the drive shaft is also symmetrically provided with limiting wheels in the middle, and the inner surface of the magnetic plate is provided with a limiting groove that matches the limiting plate. In use, the limiting wheels are located in the limiting groove, thereby preventing the magnetic plate chain from shifting left and right during rotation.

[0013] Preferably, the upper center of the base plate is provided with a debris scraping mechanism. The debris scraping mechanism includes two support plates symmetrically arranged on both sides of the base plate and a lifting rod arranged between the two support plates. Each of the two support plates has a vertical groove in its center. A spring is fixed to the bottom of the vertical groove. The two ends of the lifting rod are respectively slidably limited in the vertical grooves of the two support plates, and its lower end face is in contact with the upper end of the spring. A scraper is fixedly provided at the upper end of the lifting rod, and the upper end of the scraper abuts against the lower end face of the magnetic plate chain. Top plates are provided at both ends of the lifting rod. The lower part of the top plate is fixedly installed at the end of the lifting rod by bolts. Its upper part is T-shaped and slides in contact with the lower end face of the magnetic plate chain. The upper width of the top plate is greater than the width of a single magnetic plate.

[0014] Preferably, one side of the scraper is provided with an anti-adhesion mechanism, which includes an anti-adhesion plate, a connecting rod, and a spindle. The lifting rod has a square hollow cavity inside, and multiple strip-shaped through holes are provided on the side wall of the lifting rod. The spindle is square in shape and is slidably disposed in the hollow cavity of the lifting rod. Multiple connecting rods are fixedly connected to the side of the spindle, and the multiple connecting rods correspond to multiple through holes. The outer ends of the connecting rods extend upward through the through holes. An anti-adhesion plate is fixedly connected to the upper end of the connecting rod. The anti-adhesion plate is in contact with the upper part of the scraper and can slide left and right relative to each other. The upper end of the anti-adhesion plate is lower than the upper end of the scraper, and the anti-adhesion plate is a magnetic plate. The outer side of the second support plate is provided with a driving mechanism for driving the spindle to slide in the hollow cavity.

[0015] Preferably, the drive mechanism includes a third motor, which is fixedly connected to the end of the lifting rod via a mounting base. The output end of the third motor is connected to a drive disk, and a shaft is fixedly connected to the edge of the drive disk away from the third motor. The outer end of the spindle is provided with a rectangular frame, and the shaft is movably inserted into the rectangular frame. When the third motor rotates, it drives the drive disk to rotate, and the shaft on the drive disk drives the spindle to move left and right, thereby realizing the left and right movement of the anti-stick plate.

[0016] Preferably, a cleaning mechanism is also provided at the upper center of the base plate. The cleaning mechanism includes a cleaning roller and a wiping roller. Both ends of the cleaning roller and the wiping roller are fixedly installed on both sides of the base plate through a support plate and are rotatably arranged between them. The upper ends of the cleaning roller and the wiping roller are in contact with the surface of the magnetic chain. The central shaft end of the wiping roller is provided with a drive wheel, and the central shaft end of the cleaning roller is provided with a driven wheel. The drive wheel and the driven wheel are connected by a belt drive. A second motor is provided on the outer side of the support plate of the wiping roller, and the output end of the second motor is connected to the central shaft of the wiping roller.

[0017] In use, the rotation of the second motor drives the wiping roller and the sweeping roller to rotate simultaneously. The sweeping roller cleans the surface of the magnetic chain, and the wiping roller further wipes the surface of the magnetic chain to ensure the cleanliness of the magnetic chain surface.

[0018] Preferably, the surface of the cleaning roller is provided with several rows of bristles, and the several rows of bristles are staggered, and the bristles are made of plastic.

[0019] Preferably, the surface of the wiping roller is provided with an elastic wiping cloth, which is cotton cloth or sponge.

[0020] Compared with the prior art, the present invention provides a magnetic plate chain conveyor line for automobile assembly lines, which has the following advantages:

[0021] 1. This invention improves conveying stability: The magnetic plate chain uses magnetic force to attract automotive parts or the whole vehicle, effectively preventing shaking and deviation, improving assembly accuracy, and can adapt to the assembly needs of different vehicle models, thus improving the versatility of the conveyor line.

[0022] 2. The magnetic plate chain conveyor of the present invention has less wear on its components, a longer service life, reduces the frequency of replacement and maintenance, and lowers production costs.

[0023] 3. This invention can remove the attached material from the magnetic plate chain by setting a debris scraping mechanism. At the same time, the anti-adhesion mechanism can prevent the adhesive material from accumulating on the scraper and affecting the scraping effect. The anti-adhesion plate with magnetic plate can adsorb the metal debris adsorbed on the magnetic plate chain onto the anti-adhesion plate, avoiding the metal debris from adsorbing on the magnetic plate chain, affecting the flatness of the magnetic plate chain, and causing scratches or dents on the surface of the transported automotive assembly parts.

[0024] 4. The present invention provides a cleaning mechanism in which a cleaning roller cleans the surface of the magnetic plate chain and a wiping roller further wipes the surface of the magnetic plate chain to ensure the cleanliness of the magnetic plate chain surface. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the upper structure of the base plate in this invention;

[0027] Figure 3 This is a schematic diagram of the upper structure of the magnetic plate chain in this invention;

[0028] Figure 4 This is a schematic diagram of the lower structure of the magnetic plate chain in this invention;

[0029] Figure 5 This is a partial schematic diagram of the magnetic plate chain in this invention;

[0030] Figure 6 This is a schematic diagram of the drive shaft in this invention;

[0031] Figure 7 This is a schematic diagram of the magnetic plate structure in this invention;

[0032] Figure 8 This is a schematic diagram of the debris scraping mechanism in this invention;

[0033] Figure 9 This is a rear view of the debris scraping mechanism in this invention;

[0034] Figure 10 This is a schematic diagram of the anti-adhesion mechanism in this invention;

[0035] Figure 11 for Figure 9 A magnified structural diagram of A in the diagram.

[0036] In the diagram: 1. Base plate; 2. Support column; 3. Crossbeam; 4. Magnetic chain; 5. Control cabinet; 6. First motor; 7. Debris scraping mechanism; 8. Sweeping roller; 9. Wiping roller; 10. Support plate one; 11. Second motor; 12. Drive wheel; 13. Belt; 14. Driven wheel; 15. Drive shaft;

[0037] Magnetic plate; 151. Drive wheel; 152. Limit wheel;

[0038] 411. Connecting protrusion; 412. Connecting groove; 413. Protruding tooth; 414. Limiting groove;

[0039] Support plate 2; 702, vertical groove; 703, spring; 704, through hole; 705, lifting rod; 706, top plate; 707, anti-adhesion mechanism; 708, drive mechanism; 709, scraper;

[0040] Anti-stick plate; 7072, connecting rod; 7073, spindle; 7074, rectangular frame;

[0041] 7081, Third motor; 7082, Drive disc; 7083, Shaft; 7084, Mounting base. Detailed Implementation

[0042] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Example

[0043] Please see Figures 1-7 A magnetic plate chain conveyor for an automobile assembly line includes a support base and a magnetic plate chain 4 mounted on the support base. The support base includes a base plate 1, with support columns 2 fixedly mounted at the four corners of the upper surface of the base plate 1. Two support columns 2 on the same side are fixedly connected to the upper ends of crossbeams 3, and drive shafts 15 are rotatably connected to the two ends of the two crossbeams 3 respectively. The two ends of the magnetic plate chain 4 are respectively sleeved on the two drive shafts 15. A first motor 6 is provided on the rear side of the support base. The output end of the first motor 6 is connected to one of the drive shafts 15. The first motor 6 drives the drive shaft 15 to rotate, thereby driving the magnetic plate chain 4 to rotate, thus realizing the conveying function.

[0044] The magnetic plate chain 4 includes several magnetic plates 41 with magnetic adsorption function. One side of the magnetic plate 41 is provided with multiple connecting protrusions 411 (three in this embodiment) and the other side is provided with three connecting grooves 412. The connecting protrusions 411 of each magnetic plate 41 are inserted into the connecting grooves 412 of the adjacent magnetic plate 41 and are connected by a rotating shaft to form a complete plate chain.

[0045] During the use of the automotive assembly line, if it is necessary to transport the car body side panel, chassis, body electrophoresis, etc., the robot arm places them on the magnetic plate chain 4. The magnetic plate 41 with magnetic adsorption function adsorbs the automotive assembly parts, so that the automotive assembly parts will not slip or shift during transportation, ensuring the safety of transportation. Moreover, when assembling different models, there is no need to adjust the conveyor line.

[0046] The drive shaft 15 is provided with multiple drive wheels 151, and in this embodiment there are three. The three drive wheels 151 are evenly spaced, and the outer surface of the drive wheel 151 is provided with tooth grooves. The inner surface of the magnetic plate 41 is provided with strip-shaped protrusions 413. In use, the protrusions 413 are stuck in the tooth grooves, so that the rotation of the drive wheel 151 can stably drive the magnetic plate chain 4 to rotate.

[0047] The drive shaft 15 is symmetrically provided with a limiting wheel 152 in the middle, and the inner surface of the magnetic plate 41 is provided with a limiting groove 414 that matches the limiting plate. When in use, the limiting wheel 152 is located in the limiting groove 414, thereby preventing the magnetic plate chain 4 from shifting left and right during rotation. Example

[0048] To address the issue of surface contaminants adhering to the magnetic chain, which disrupts the surface smoothness and affects the assembly of components in transporting automobiles, this embodiment adds the following solution based on Embodiment 1:

[0049] Please see Figures 8-11 The upper middle part of the base plate 1 is provided with a debris scraping mechanism 7. The debris scraping mechanism 7 includes two support plates 701 symmetrically arranged on both sides of the base plate 1 and a lifting rod 705 arranged between the two support plates 701. The middle part of each support plate 701 is provided with a vertical groove 702. A spring 703 is fixed at the bottom of the vertical groove 702. The two ends of the lifting rod 705 are respectively slidably limited in the vertical groove 702 of the two support plates 701, and its lower end face is in contact with the upper end of the spring 703. A scraper 709 is fixedly provided at the upper end of the lifting rod 705. The upper end of the scraper 709 abuts against the lower end face of the magnetic plate chain 4. The two ends of the lifting rod 705 are provided with a top plate 706. The lower part of the top plate 706 is fixedly installed at the end of the lifting rod 705 by bolts. Its upper part is T-shaped and slides in contact with the lower end face of the magnetic plate chain 4. The upper width of the top plate 706 is greater than the width of a single magnetic plate 41.

[0050] During use, under the action of spring 703, the lifting rod 705 always moves upward, so that the upper end of scraper 709 is always in contact with the lower end of magnetic plate chain 4, thereby scraping off the attached substances on magnetic plate chain 4. At the same time, the top plate 706 prevents scraper 709 from rising excessively, avoiding its upper end from being inserted into the connection gap between the two magnetic plates 41 and getting stuck.

[0051] The scraper 709 has an anti-adhesion mechanism 707 on one side. The anti-adhesion mechanism 707 includes an anti-adhesion plate 7071, a connecting rod 7072, and a spindle 7073. The lifting rod 705 has a square hollow cavity inside, and multiple strip-shaped through holes 704 are provided on the side wall of the lifting rod 705. The spindle 7073 is square in shape and is slidably disposed in the hollow cavity of the lifting rod 705. Multiple connecting rods 7072 are fixedly connected to the side of the spindle 7073. 2 Corresponds to multiple through holes 704, and the outer end of the connecting rod 7072 extends upward through the through hole 704. The upper end of the connecting rod 7072 is fixedly connected to an anti-stick plate 7071. The anti-stick plate 7071 is attached to the upper part of the scraper 709 and can slide left and right relative to each other. The upper end of the anti-stick plate 7071 is lower than the upper end of the scraper 709, and the anti-stick plate 7071 is a magnetic plate 41. The outer side of the support plate 2 701 is provided with a drive mechanism 708 for the drive spindle 7073 to slide in the hollow cavity.

[0052] In use, the drive mechanism 708 drives the spindle 7073 to move left and right in the hollow cavity of the lifting rod 705. The spindle 7073 drives the anti-stick plate 7071 to move left and right through the connecting rod 7072. Because the scraper 709 scrapes off the adhesive on the magnetic plate chain 4, the adhesive is easy to stick to the scraper 709. The left and right moving anti-stick plate 7071 prevents the adhesive from accumulating on the scraper 709 and affecting the scraping effect of the scraper 709. At the same time, the anti-stick plate 7071 with magnetic plate 41 can adsorb the metal debris adsorbed on the magnetic plate chain 4 onto the anti-stick plate 7071, avoiding the metal debris from adsorbing on the magnetic plate chain 4, affecting the flatness of the magnetic plate chain 4, and causing scratches or dents on the surface of the transported automotive assembly parts.

[0053] The drive mechanism 708 includes a third motor 7081, which is fixedly connected to the end of the lifting rod 705 via a mounting base 7084. The output end of the third motor 7081 is connected to a drive disk 7082, and a shaft 7083 is fixedly connected to the edge of the drive disk 7082 away from the third motor 7081. The outer end of the spindle 7073 is provided with a rectangular frame 7074, and the shaft 7083 is movably inserted into the rectangular frame 7074. When the third motor 7081 rotates, it drives the drive disk 7082 to rotate, and the shaft 7083 on the drive disk 7082 will drive the spindle 7073 to move left and right, thereby realizing the left and right movement of the anti-stick plate 7071. Example

[0054] To further clean the paint, oil, and other contaminants from the surface of the magnetic chain, this embodiment adds the following solution based on Embodiment 2:

[0055] Please see Figures 1-2A cleaning mechanism is also provided at the upper center of the base plate 1. The cleaning mechanism includes a cleaning roller 8 and a wiping roller 9. Both ends of the cleaning roller 8 and the wiping roller 9 are fixedly installed on both sides of the base plate 1 by a support plate 10 and are rotatably set between them. The upper ends of the cleaning roller 8 and the wiping roller 9 are in contact with the surface of the magnetic chain 4. The surface of the cleaning roller 8 is provided with several rows of bristles, which are staggered and made of plastic. The surface of the wiping roller 9 is provided with an elastic wiping cloth, which is made of cotton or sponge.

[0056] The wiping roller 9 has a drive wheel 12 at the end of its central shaft and a driven wheel 14 at the end of its central shaft. The drive wheel 12 and the driven wheel 14 are connected by a belt 13. A second motor 11 is provided on the outside of the support plate 10 of the wiping roller 9. The output end of the second motor 11 is connected to the central shaft of the wiping roller 9.

[0057] In use, the second motor 11 drives the wiping roller 9 and the sweeping roller 8 to rotate simultaneously. The sweeping roller 8 cleans the surface of the magnetic plate chain 4, and the wiping roller 9 further wipes the paint or oil stains on the surface of the magnetic plate chain 4 to ensure the cleanliness of the surface of the magnetic plate chain 4.

Claims

1. A magnetic plate chain conveyor for an automobile assembly line, comprising a support base and a magnetic plate chain (4) disposed on the support base; characterized in that: The support base includes a base plate (1), and support columns (2) are fixedly provided at the four corners of the upper end face of the base plate (1). The upper ends of the two support columns (2) on the same side are fixedly connected to crossbeams (3). The two ends of the two crossbeams (3) are respectively rotatably connected to drive shafts (15). The two ends of the magnetic plate chain (4) are respectively sleeved on the two drive shafts (15). A first motor (6) is provided on the rear side of the support base. The output end of the first motor (6) is connected to one of the drive shafts (15). The first motor (6) drives the drive shaft (15) to rotate, thereby driving the magnetic plate chain (4) to rotate, so as to realize the conveying function. The magnetic plate chain (4) includes several magnetic plates (41) with magnetic adsorption function. One side of the magnetic plate (41) is provided with multiple connecting protrusions (411) and the other side is provided with multiple connecting grooves (412). The connecting protrusions (411) of each magnetic plate (41) are inserted into the connecting grooves (412) of the adjacent magnetic plate (41) and are connected by rotating shaft to form a complete plate chain. The upper middle part of the base plate (1) is provided with a debris scraping mechanism (7). The debris scraping mechanism (7) includes two support plates (701) symmetrically arranged on both sides of the base plate (1) and a lifting rod (705) arranged between the two support plates (701). The middle part of the two support plates (701) is provided with a vertical groove (702). A spring (703) is fixed at the bottom of the vertical groove (702). The two ends of the lifting rod (705) are respectively slidably limited in the vertical groove (702) of the two support plates (701), and its lower end face is in contact with the upper end of the spring (703). A scraper (709) is fixedly provided at the upper end of the lifting rod (705). The upper end of the scraper (709) abuts against the lower end face of the magnetic plate chain (4). One side of the scraper (709) is provided with an anti-adhesion mechanism (707), which includes an anti-adhesion plate (7071), a connecting rod (7072), and a spindle (7073). The lifting rod (705) has a square hollow cavity inside, and multiple strip-shaped through holes (704) are provided on the side wall of the lifting rod (705). The spindle (7073) is square in shape and is slidably disposed in the hollow cavity of the lifting rod (705). Multiple connecting rods (7072) are fixedly connected to the side of the spindle (7073). The multiple connecting rods (7072) are... 2) Corresponding to multiple through holes (704), and the outer end of the connecting rod (7072) extends upward through the through hole (704). The upper end of the connecting rod (7072) is fixedly connected to an anti-stick plate (7071). The anti-stick plate (7071) is attached to the upper part of the scraper (709) and can slide left and right relative to each other. The upper end of the anti-stick plate (7071) is lower than the upper end of the scraper (709), and the anti-stick plate (7071) is a magnetic plate (41). The outer side of the second support plate (701) is provided with a driving mechanism (708) for the drive spindle (7073) to slide in the hollow cavity.

2. The magnetic plate chain conveyor line for automobile assembly lines according to claim 1, characterized in that: The drive shaft (15) is provided with multiple drive wheels (151), which are evenly spaced apart. The outer surface of the drive wheel (151) is provided with tooth grooves, and the inner surface of the magnetic plate (41) is provided with strip-shaped protrusions (413). When in use, the protrusions (413) are stuck in the tooth grooves, so that the rotation of the drive wheel (151) can stably drive the magnetic plate chain (4) to rotate.

3. A magnetic plate chain conveyor line for automobile assembly lines according to claim 2, characterized in that: The drive shaft (15) is also symmetrically provided with a limiting wheel (152) in the middle, and the inner surface of the magnetic plate (41) is provided with a limiting groove (414) that matches the limiting plate. When in use, the limiting wheel (152) is located in the limiting groove (414).

4. A magnetic plate chain conveyor line for automobile assembly lines according to claim 1, characterized in that: The lifting rod (705) has a top plate (706) at both ends. The lower part of the top plate (706) is fixedly installed at the end of the lifting rod (705) by bolts. Its upper part is T-shaped and slides in contact with the lower end face of the magnetic plate chain (4). The upper width of the top plate (706) is greater than the width of a single magnetic plate (41).

5. A magnetic plate chain conveyor line for automobile assembly lines according to claim 1, characterized in that: The drive mechanism (708) includes a third motor (7081), which is fixedly connected to the end of the lifting rod (705) via a mounting base (7084). The output end of the third motor (7081) is connected to a drive disk (7082), and a shaft (7083) is fixedly connected to the edge of the drive disk (7082) away from the third motor (7081). The outer end of the spindle (7073) is provided with a rectangular frame (7074), and the shaft (7083) is movably inserted into the rectangular frame (7074). When the third motor (7081) rotates, it drives the drive disk (7082) to rotate, and the shaft (7083) on the drive disk (7082) will drive the spindle (7073) to move left and right, thereby realizing the left and right movement of the anti-stick plate (7071).

6. A magnetic plate chain conveyor line for an automobile assembly line according to any one of claims 1-5, characterized in that: The upper middle part of the base plate (1) is also provided with a cleaning mechanism, which includes a cleaning roller (8) and a wiping roller (9). Both ends of the cleaning roller (8) and the wiping roller (9) are fixedly installed on both sides of the base plate (1) through a support plate (10) and are rotatably arranged between the support plate (10). The upper ends of the cleaning roller (8) and the wiping roller (9) are in contact with the surface of the magnetic plate chain (4). The central shaft end of the wiping roller (9) is provided with a drive wheel (12) and the central shaft end of the cleaning roller (8) is provided with a driven wheel (14). The drive wheel (12) and the driven wheel (14) are connected by a belt (13). The outer side of the support plate (10) of the wiping roller (9) is provided with a second motor (11), and the output end of the second motor (11) is connected to the central shaft of the wiping roller (9).

7. A magnetic plate chain conveyor line for automobile assembly lines according to claim 6, characterized in that: The surface of the cleaning roller (8) is provided with several rows of bristles, and the several rows of bristles are arranged in a staggered manner. The bristles are made of plastic.

8. A magnetic plate chain conveyor line for an automobile assembly line according to claim 6, characterized in that: The surface of the wiping roller (9) is provided with an elastic wiping cloth, which is made of cotton or sponge.

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