Cross-rail conveying device for automatic painting production line

Abstract

The present invention belongs to the technical fields of automobiles and painting automatic production lines, and discloses a cross-rail conveying device for an automatic painting production line, which includes a transition roller bed embedded in a robot rail. The transition roller bed has a second guide wheel set. The first guide wheel sets of multiple sections of fixed roller beds are located in the same rolling support plane and have the same rolling direction, so that when the painting skid passes through the robot rail, it can be slidably supported on the second guide wheel set, and can slide from the front fixed roller bed to the rear fixed roller bed through the second guide wheel set, realizing the sliding across the robot rail. The present invention enables the painting skid to be rollingly supported on the second guide wheel set on the transition roller bed when passing through the robot rail. The second guide wheel set of the transition roller bed connects the first guide wheel sets of the front and rear fixed roller beds, thereby reducing the sliding span of the painting skid, and further avoiding the problem that the painting skid may tip over due to a large span when crossing the robot rail.

Description

Technical Field

[0001] The present invention relates to the technical fields of automobiles and painting automatic production lines, and particularly relates to a cross-guide rail conveying device for an automatic painting production line. Background Art

[0002] With the upgrade and transformation of the manufacturing industry towards automation and intelligence, in the field of truck cab painting production, the production method of using skids as the conveying carrier and robots to replace manual operations has become the mainstream production situation in the painting industry. During the automatic operation process of the truck cab painting, the operation positions of the cab are usually distributed at positions such as the top cover, inner cavity, rear enclosure, and side enclosure. To meet the beat requirements and the design principle of minimizing the layout floor area, the optimal layout plan for the robot workstations is a four-sided surrounding layout form, that is, the robots equipped with special guide rails are distributed in the four directions of the front, back, left, and right of the operation station. Since the skids selected for conveying the truck cab are usually no more than 3 meters, in the four-sided surrounding layout form, when the skid carries the cab, it needs to cross two special guide rails for robots distributed in front of and behind the automatic station, and there will be a risk of tipping over during the crossing process due to the excessive span (the width of the guide rail plus the robot pipeline can reach about 1 - 1.5 meters).

[0003] Limited by the above-mentioned conveying problems, the common method in the prior art is to distribute multiple robot stations in the forward direction of the cab, and realize the automatic operation process through some customized robots. Although this multi-station layout form can meet the realization of the automatic operation process, its layout floor area is large, and the number of robots required is large, and the equipment configuration requirements are high, which increases the transformation cost and transformation difficulty in the automation upgrade. Summary of the Invention

[0004] The purpose of the present invention is to provide a cross-guide rail conveying device for an automatic painting production line to solve the problem of the tipping risk existing in the cross-guide rail conveying of the painting skid during the automatic painting production process.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] Cross-rail conveying device for an automatic painting production line, the automatic painting production line includes a fixed roller bed and a robot rail, the robot rail penetrates between multiple sections of the fixed roller bed, the fixed roller bed has a first guide wheel set, and the painting skid can slide on the first guide wheel set; the cross-rail conveying device for the automatic painting production line includes a transition roller bed, the transition roller bed is embedded in the robot rail, the transition roller bed has a second guide wheel set, the second guide wheel set and the first guide wheel set are located in the same rolling support plane and have the same rolling direction, so that the painting skid can be slidably supported on the second guide wheel set when passing through the robot rail, and through the second guide wheel set, slide from the front fixed roller bed to the rear fixed roller bed to achieve sliding across the robot rail.

[0007] Optionally, the second guide wheel set includes a second guide wheel and a second flat wheel, the second guide wheel and the second flat wheel are coaxially arranged, the second guide wheel is arranged along the rolling direction of the first guide wheel on the fixed roller bed, and the second flat wheel is arranged along the rolling direction of the first flat wheel on the fixed roller bed.

[0008] Optionally, the second guide wheel set further includes support wheels, there are multiple support wheels, and the multiple support wheels are respectively arranged at the front and rear positions of the second guide wheel and the second flat wheel along the rolling direction, and the painting skid can be slidably supported on the multiple support wheels.

[0009] Optionally, the transition roller bed further includes:

[0010] A fixed seat, the fixed seat is fixedly installed on the bottom plate of the robot rail;

[0011] A drive assembly, the drive assembly is arranged on the fixed seat;

[0012] A roller, both ends of the roller are rotatably connected to the fixed seat, the output end of the drive assembly is connected to the roller to drive the rotation of the roller, and the second guide wheel and the second flat wheel are respectively arranged at both ends of the roller and can rotate synchronously with the roller.

[0013] Optionally, the drive assembly includes a motor, a first synchronous pulley is provided at the output end of the motor, a second synchronous pulley is provided on the roller, and a synchronous belt is provided between the first synchronous pulley and the second synchronous pulley for synchronous transmission connection.

[0014] Optionally, the drive assembly further includes a reducer, the reducer is arranged on the fixed seat and connected to the output end of the motor, and the first synchronous pulley is arranged at the output end of the reducer.

[0015] Optionally, the transition roller bed further includes a top plate disposed on the fixed seat and above the rollers. The top plate is provided with a first through hole and a second through hole. The tops of the second guide wheels and the second flat wheels can respectively pass through the first through hole and the second through hole from bottom to top to roll and support the painting skid.

[0016] Optionally, the transition roller bed further includes side plates disposed on the fixed seat and on the front and rear sides of the top plate along the rolling direction. The support wheels are rotatably connected to both ends of the side plates.

[0017] Optionally, two spaced side ears are respectively provided at both ends of the side plate, a rolling bearing is arranged between the two side ears, and the support wheel is arranged on the rolling bearing.

[0018] Optionally, the connection between the side ear and the side plate is detachable.

[0019] Advantages of the present invention:

[0020] For the cross-guide rail conveying device for an automatic painting production line of the present invention, by embedding a transition roller bed in the robot guide rail, the painting skid can be rollingly supported on the second guide wheel set on the transition roller bed when passing through the robot guide rail. The second guide wheel set of the transition roller bed connects the first guide wheel sets of the fixed roller beds in the front and the rear, thereby reducing the sliding span of the painting skid, and further avoiding the problem that the painting skid may tip over due to a large span when crossing the robot guide rail. Description of the drawings

[0021] Figure 1 is the overall structural schematic diagram of the cross-guide rail conveying device for an automatic painting production line of the present invention;

[0022] Figure 2 is the structural schematic diagram of the transition roller bed of the cross-guide rail conveying device for an automatic painting production line of the present invention;

[0023] Figure 3 is the partial cross-sectional structural schematic diagram of the transition roller bed of the cross-guide rail conveying device for an automatic painting production line of the present invention.

[0024] In the figure:

[0025] 100, fixed roller bed; 101, first guide wheel; 102, first flat wheel;

[0026] 200, robot guide rail; 201, mounting hole;

[0027] 1. Transition roller bed; 11. Second guide wheel; 12. Second flat wheel; 13. Support wheel; 14. Fixed seat; 15. Driving assembly; 151. Motor; 152. Reducer; 153. First synchronous wheel; 16. Roller shaft; 161. Second synchronous wheel; 162. Synchronous belt; 17. Top plate; 171. First through hole; 172. Second through hole; 18. Side plate; 19. Side ear. Detailed implementation manners

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that, for the convenience of description, only parts related to the present invention rather than all structures are shown in the drawings.

[0029] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0030] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal height than the second feature. The first feature being "below", "below", and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal height than the second feature.

[0031] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0032] The cross-rail conveying device for an automatic painting production line provided by the present invention is generated under the background of automating the upgrade of the weld sealant coating process of a medium and heavy-duty truck cab production line. As Figure 1As shown, during the automated painting process, the painting skid needs to slide on the fixed roller bed 100. At the same time, since the robot guide rail 200 is installed across the fixed roller bed 100, the fixed roller bed 100 is set in multiple sections. When the painting skid passes through two adjacent sections of the fixed roller bed 100, it needs to cross the robot guide rail 200. Due to the large width of the robot guide rail 200, there is no track support when the painting skid crosses the robot guide rail 200, and there is a risk of tipping over. Therefore, the present invention provides a cross-guide rail conveying device for an automatic painting production line to solve the problem of the risk of tipping over when the painting skid crosses the guide rail during the automatic painting production process.

[0033] As Figure 1 , the automatic painting production line includes a fixed roller bed 100 and a robot guide rail 200. The robot guide rail 200 passes through between multiple sections of the fixed roller bed 100. The fixed roller bed 100 has a first set of guide wheels. The painting skid can slide on the first set of guide wheels. There is a risk of tipping over when crossing the robot guide rail 200. The cross-guide rail conveying device for the automatic painting production line provided by the present invention includes a transition roller bed 1. The transition roller bed 1 is embedded and installed in the robot guide rail 200. The transition roller bed 1 has a second set of guide wheels. The second set of guide wheels and the first set of guide wheels are located in the same rolling support plane and have the same rolling direction, so that the painting skid can slide and be supported on the second set of guide wheels when passing through the robot guide rail 200, and through the second set of guide wheels, slide from the front fixed roller bed 100 to the rear fixed roller bed 100 to achieve sliding across the robot guide rail 200.

[0034] In this embodiment, two robot guide rails 200 are arranged along the longitudinal conveying direction of the fixed roller bed 100, and a transition roller bed 1 is installed in each robot guide rail 200. The transition roller bed 1 can connect the front and rear two sections of the fixed roller bed 100, thereby effectively solving the problem of the risk of tipping over due to the large span during the conveying process of the painting skid. As Figure 1 shown, mounting holes 201 are opened at positions on the robot guide rail 200 corresponding to the fixed roller bed 100. The transition roller bed 1 is embedded and installed in the mounting holes 201. The transition roller bed 1 is located in the conveying path of the painting skid to connect the front and rear fixed roller beds 100, providing a stable rolling support plane for the painting skid to cross the robot guide rail 200, which is beneficial to reducing the layout cost of the robot workstation and is usually applicable to painting skids for medium and heavy-duty truck cabs in the range of 2.7 meters to 3 meters.

[0035] The cross-guide rail conveying device for an automatic painting production line of the present invention embeds a transition roller bed 1 in a robot guide rail 200, so that when a painting skid passes through the robot guide rail 200, it can be rollingly supported on the second guide wheel set on the transition roller bed 1. The second guide wheel set of the transition roller bed 1 connects the first guide wheel sets of the fixed roller beds 100 in the front and the rear, thereby reducing the sliding span of the painting skid, and further avoiding the problem that the painting skid may tip over due to a large span when crossing the robot guide rail 200.

[0036] Optionally, the second guide wheel set includes a second guide wheel 11 and a second flat wheel 12. The second guide wheel 11 and the second flat wheel 12 are coaxially arranged. The second guide wheel 11 is arranged along the rolling direction of the first guide wheel 101 on the fixed roller bed 100, and the second flat wheel 12 is arranged along the rolling direction of the first flat wheel 102 on the fixed roller bed 100.

[0037] As Figure 1 and Figure 2 As shown, a first guide wheel set is arranged on the fixed roller bed 100 along the conveying direction. The first guide wheel set includes a first guide wheel 101 and a first flat wheel 102 that are coaxially arranged and spaced apart. Multiple groups of first guide wheel sets are arranged at intervals along the conveying direction to support the painting skid. The painting skid can slide on the rolling support plane of the first guide wheel set to achieve conveying. The spacing of multiple groups of first guide wheel sets is set according to the length of the painting skid, which can ensure stable sliding of the painting skid. At the robot guide rail 200, since the spacing between the fixed roller beds 100 at the front and the rear ends is large, the spacing between the corresponding two groups of first guide wheel sets is large accordingly. It is necessary to set an intermediate transition roller bed 1 to realize the sliding of the painting skid across the robot guide rail 200 without affecting the normal operation of the robot guide rail 200. In the embodiment of the present invention, the transition roller bed 1 is provided with a second guide wheel set. The second guide wheel set includes a second guide wheel 11 and a second flat wheel 12. The second guide wheel 11 and the second flat wheel 12 are respectively arranged corresponding to the first guide wheel 101 and the first flat wheel 102 of the first guide wheel set, that is, the second guide wheel 11 is located in the rolling direction of the first guide wheel 101 and arranged in the same row as multiple first guide wheels 101, and the second flat wheel 12 is located in the rolling direction of the first flat wheel 102 and arranged in the same row as multiple first flat wheels 102. The transition roller bed 1 and the fixed roller bed 100 form a consistent rolling support plane, which is beneficial to the smooth sliding of the painting skid and reduces the tipping risk when crossing the robot guide rail 200.

[0038] Optionally, the second guide wheel set further includes support wheels 13. There are multiple support wheels 13, and multiple support wheels 13 are respectively arranged in the front and rear positions of the second guide wheel 11 and the second flat wheel 12 along the rolling direction. The painting skid can be slidably supported on multiple support wheels 13.

[0039] As Figure 2As shown, taking four support wheels 13 as an example, they are grouped in pairs and respectively arranged on the front and rear sides of the second guide wheel 11 and the front and rear sides of the second flat wheel 12. Along the rolling direction, when the painting skid slides from a fixed roller bed 100 to the robot guide rail 200, it can preferably roll into contact with the support wheels 13 to facilitate supporting the painting skid. It can be understood that two support wheels 13 in each group are symmetrically arranged and are respectively arranged in the same row as the first guide wheel 11 and the second flat wheel 12, with the same rolling direction, so as to simultaneously roll and support the painting skid and facilitate the stable sliding transition of the painting skid. The second guide wheel group of the above transition roller bed 1 and the first guide wheel group of the fixed roller bed 100 form an integrated rolling support plane, and the setting heights and widths of the second guide wheel group and the first guide wheel group are equal to ensure the stability of the painting skid.

[0040] Optionally, the transition roller bed 1 further includes a fixed seat 14, a driving component 15 and a roller 16. The fixed seat 14 is fixedly installed on the bottom plate of the robot guide rail 200; the driving component 15 is arranged on the fixed seat 14; both ends of the roller 16 are rotatably connected to the fixed seat 14, and the output end of the driving component 15 is connected to the roller 16 to drive the rotation of the roller 16. The second guide wheel 11 and the second flat wheel 12 are respectively arranged at both ends of the roller 16 and can rotate synchronously with the roller 16.

[0041] As Figure 2 and Figure 3 As shown, the second guide wheel 11 and the second flat wheel 12 are respectively fixedly arranged at both ends of the roller 16. Under the action of the power provided by the driving component 15, the driving component 15 actively drives the rotation of the second guide wheel 11 and the second flat wheel 12 through the roller 16, so that when the painting skid passes through the transition roller bed 1, the problem of slipping will not occur. It should be noted that the driving component 15, as the power structure of the transition roller bed 1, adopts the same power output setting as the fixed roller bed 100, and the power output direction is the same as that of the fixed roller bed 100 to achieve synchronous driving. By detachably connecting the fixed seat 14 to the bottom plate of the robot guide rail 200, it is convenient to disassemble, install and replace the transition roller bed 1, so as to replace the transition roller bed 1 with a corresponding second guide wheel group according to the parameter dimensions of the first guide wheel group and meet the internal space requirements of the installation holes 201 of the robot guide rail 200.

[0042] Optionally, the driving component 15 includes a motor 151. A first synchronous pulley 153 is arranged at the output end of the motor 151, a second synchronous pulley 161 is arranged on the roller 16, and a synchronous belt 162 is arranged between the first synchronous pulley 153 and the second synchronous pulley 161 for synchronous transmission connection.

[0043] As Figure 3As shown, the motor 151 is horizontally arranged and fixed on the fixed seat 14. The second synchronous pulley 161 is located above the first synchronous pulley 153, and a synchronous belt 162 is drivingly connected between the two. The synchronous belt 162 is wear-resistant and not easily deformed, has a long service life, low noise during use, and good synchronism.

[0044] Optionally, the driving assembly 15 further includes a speed reducer 152. The speed reducer 152 is arranged on the fixed seat 14 and connected to the output end of the motor 151. The first synchronous pulley 153 is arranged at the output end of the speed reducer 152.

[0045] As Figure 3 , setting the speed reducer 152 at the output end of the motor 151 can reduce the speed of the motor 151 while increasing the output torque, so that the second guide pulley 11 and the second flat pulley 12 have a stable rotational output and provide conveying power for the painting skid.

[0046] Optionally, the transfer roller bed 1 further includes a top plate 17. The top plate 17 is arranged on the fixed seat 14 and located above the roller 16. The top plate 17 is provided with a first through hole 171 and a second through hole 172. The tops of the second guide pulley 11 and the second flat pulley 12 can respectively pass through the first through hole 171 and the second through hole 172 from bottom to top to rollingly support the painting skid.

[0047] As Figure 2 shown, the apertures of the first through hole 171 and the second through hole 172 are slightly larger than the outer diameters of the second guide pulley 11 and the second flat pulley 12 respectively, facilitating the tops of the second guide pulley 11 and the second flat pulley 12 to pass through the first through hole 171 and the second through hole 172, enabling the painting skid to slide on the second guide pulley 11 and the second flat pulley 12. The first through hole 171 and the second through hole 172 have a limiting effect on the second guide pulley 11 and the second flat pulley 12, making them have consistent rotation directions respectively.

[0048] Optionally, the transfer roller bed 1 further includes side plates 18. The side plates 18 are arranged on the fixed seat 14 and located on the front and rear sides of the top plate 17 along the rolling direction. The supporting wheels 13 are rollingly connected to both ends of the side plates 18.

[0049] As Figure 2 shown, the supporting wheels 13 are rollingly connected to both ends of the front and rear two side plates 18, so as to be correspondingly arranged with the second guide pulley 11 and the second flat pulley 12 respectively. Setting the supporting wheels 13 on the side plates 18 enables the supporting wheels 13 to extend and support the painting skid in the front and rear directions, further reducing the span of the painting skid and improving the sliding stability of the painting skid. At the same time, the side plates 18 are connected to both the fixed seat 14 and the top plate 17, which is beneficial to increasing the supporting strength of the fixed seat 14.

[0050] Optionally, two spaced side lugs 19 are respectively provided at both ends of the side plate 18, a rolling bearing is arranged between the two side lugs 19, and the supporting wheel 13 is arranged on the rolling bearing.

[0051] As Figure 2 shown, rolling bearings are respectively arranged on each group of two side lugs 19. Preferably, the supporting wheel 13 is a flat wheel. Along the length direction of the roller shaft 16, the width of the supporting wheel 13 is not less than the widths of the second guiding wheel 11 and the second flat wheel 12. Two rolling bearings are arranged along the length direction of the roller shaft 16 and are rotatably connected between the two side lugs 19 through a rotating shaft. The supporting wheel 13 is arranged on the two rolling bearings and has stable rotation, so as to better roll and support the painting skid. Generally, the rolling support plane of the supporting wheel 13 can be slightly lower than the rolling support planes of the first guiding wheel 11 and the second flat wheel 12, so that the supporting wheel 13 can smoothly slide into the robot guide rail 200 when the painting skid slides. The supporting wheel 13 rolls and supports the painting skid, so that it can smoothly contact the second guiding wheel 11 and the second flat wheel 12. The second guiding wheel 11 and the second flat wheel 12 are actively rotated under the action of the driving assembly 15 to drive the painting skid to slide, improve the sliding speed and avoid slipping.

[0052] Optionally, the connection between the side lug 19 and the side plate 18 is detachable, which is convenient for adjusting the height of the supporting wheel 13 through the side lug 19 and for adjusting the distance between the supporting wheel 13 and the second guiding wheel 11 or the second flat wheel 12, so as to ensure the smooth sliding through of the painting skid.

[0053] Obviously, the above-mentioned embodiments of the present invention are only examples for clearly explaining the present invention, and are not limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Cross-rail conveying device for an automatic painting production line, the automatic painting production line comprising a fixed roller bed (100) and a robot rail (200), the robot rail (200) passing through between multiple segments of the fixed roller bed (100), the fixed roller bed (100) having a first guide wheel set, and a painting skid being able to slide on the first guide wheel set; Characterized in that, the cross-rail conveying device for the automatic painting production line comprises a transition roller bed (1), the transition roller bed (1) being embedded and installed in the robot rail (200), the transition roller bed (1) having a second guide wheel set, the second guide wheel set and the first guide wheel set being located in the same rolling support plane and having the same rolling direction, such that when the painting skid passes through the robot rail (200), it can be slidably supported on the second guide wheel set and, through the second guide wheel set, slide from the front fixed roller bed (100) to the rear fixed roller bed (100), achieving sliding across the robot rail (200); the second guide wheel set comprises a second guide wheel (11) and a second flat wheel (12), the second guide wheel (11) and the second flat wheel (12) being coaxially arranged, the second guide wheel (11) being arranged along the rolling direction of the first guide wheel (101) on the fixed roller bed (100), and the second flat wheel (12) being arranged along the rolling direction of the first flat wheel (102) on the fixed roller bed (100); the second guide wheel set further comprises support wheels (13), there being a plurality of the support wheels (13), the plurality of support wheels (13) being respectively arranged in the front and rear positions of the second guide wheel (11) and the second flat wheel (12) along the rolling direction, and the painting skid being able to be slidably supported on the plurality of support wheels (13).

2. The cross-rail conveying device for an automatic painting production line according to claim 1, Characterized in that, the transition roller bed (1) further comprises: a fixed seat (14), the fixed seat (14) being fixedly installed on the bottom plate of the robot rail (200); a drive assembly (15), the drive assembly (15) being arranged on the fixed seat (14); a roller shaft (16), both ends of the roller shaft (16) being rotatably connected to the fixed seat (14), the output end of the drive assembly (15) being connected to the roller shaft (16) to drive the rotation of the roller shaft (16), and the second guide wheel (11) and the second flat wheel (12) being respectively arranged at both ends of the roller shaft (16) and being able to rotate synchronously with the roller shaft (16).

3. The cross-rail conveying device for an automatic painting production line according to claim 2, Characterized in that, the drive assembly (15) comprises a motor (151), a first synchronous pulley (153) being provided at the output end of the motor (151), a second synchronous pulley (161) being provided on the roller shaft (16), and a synchronous belt (162) being provided between the first synchronous pulley (153) and the second synchronous pulley (161) for synchronous transmission connection.

4. The cross-guide rail conveying device for an automatic painting production line according to claim 3, characterized in that, the driving assembly (15) further includes a speed reducer (152), the speed reducer (152) is arranged on the fixed seat (14) and connected to the output end of the motor (151), and the first synchronous wheel (153) is arranged at the output end of the speed reducer (152).

5. The cross-guide rail conveying device for an automatic painting production line according to claim 2, characterized in that, the transition roller bed (1) further includes a top plate (17), the top plate (17) is arranged on the fixed seat (14) and located above the roller shaft (16), the top plate (17) is provided with a first through hole (171) and a second through hole (172), and the tops of the second guide wheel (11) and the second flat wheel (12) can respectively pass through the first through hole (171) and the second through hole (172) from bottom to top to roll and support the painting skid.

6. The cross-guide rail conveying device for an automatic painting production line according to claim 5, characterized in that, the transition roller bed (1) further includes side plates (18), the side plates (18) are arranged on the fixed seat (14) and located on the front and rear sides of the top plate (17) along the rolling direction, and the support wheels (13) are rollingly connected to both ends of the side plates (18).

7. The cross-guide rail conveying device for an automatic painting production line according to claim 6, characterized in that, two spaced side ears (19) are respectively arranged at both ends of the side plate (18), a rolling bearing is arranged between the two side ears (19), and the support wheel (13) is arranged on the rolling bearing.

8. The cross-guide rail conveying device for an automatic painting production line according to claim 7, characterized in that, the connection between the side ear (19) and the side plate (18) is detachable.

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