Multi-vehicle flexible body-in-white accumulation chain transfer system and working method thereof

Abstract

The present application relates to a kind of multi-vehicle flexible white body accumulation chain transfer system and its working method, including white body conveying station, elevator transfer station, side top mechanism station, slide return station, accumulation chain lifting appliance;The slide component on the slide conveying mechanism of the present application can adapt to multiple vehicle types, automatically, efficiently and efficiently through control system control between each component, through proximity switch component to slide conveying mechanism position identification, realize the uniqueness of the position of slide conveying mechanism of multiple different vehicle types, ensure the uniformity of equipment in subsequent conveying process, improve the maintainability of equipment, improve the flexibility of conveying line, reduce the cost of repeated investment caused by the introduction of new vehicle model in later period.

Description

Technical Field

[0001] This invention relates to the field of automobile manufacturing technology, and in particular to a flexible multi-model body-in-white stacking chain transfer system and its working method. Background Technology

[0002] As the heavy-duty truck industry's body-in-white platforms are being updated at an increasingly rapid pace, the demand for flexible transfer between multiple body-in-white models and the accumulation chain is becoming increasingly higher. However, the existing transfer method, in which the plate chain system transports the body-in-white to the transfer station and the accumulation chain lifting device is lowered using a floor sling assembly, achieves the transfer from the adjustment line to the accumulation chain. This method cannot meet the automatic transfer requirements of multiple body-in-white models, and it also has low precision, low efficiency, and low flexibility. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a flexible multi-model body-in-white accumulation chain transfer system and its working method, thereby achieving high-precision mutual transfer between different models on the line and the accumulation chain, improving the flexibility of the transfer system, and reducing the repeated modifications and investments in the transfer system caused by the introduction of new models in the later stages.

[0004] This invention is achieved using the following technical solution:

[0005] A flexible body-in-white stacking chain transfer system for multiple vehicle models and its working method include a body-in-white conveying station, a lift transfer station, a side-top mechanism station, a skid return station, a stacking chain lifting device, and a skid conveying mechanism.

[0006] The skid conveying mechanism includes a base on which skid components capable of fixing different vehicle models are mounted. The body-in-white conveying station, the elevator transfer station, the side-top mechanism station, and the skid return station are all equipped with conveying roller assembly, locking mechanism assembly, and proximity switch assembly. The elevator transfer station includes an elevator, which is equipped with a encoder, an encoder for reading the encoder's position information, and a guide mechanism for guiding the accumulating chain lifting device. The side-top mechanism station includes a side-top mechanism.

[0007] A further description of the present invention includes a control system; the control system is a programmable PLC.

[0008] As further described in this invention, the conveying roller assembly includes a first conveying roller, a second conveying roller, a third conveying roller, and a fourth conveying roller;

[0009] The first conveyor roller, the second conveyor roller, the third conveyor roller, and the fourth conveyor roller are respectively installed at the body-in-white conveying station, the elevator transfer station, the side top mechanism station, and the skid return station;

[0010] The first conveying roller bed, the second conveying roller bed, the third conveying roller bed, the fourth conveying roller bed, the elevator, and the side top mechanism are each connected to a drive device, and the drive device is connected to the control system.

[0011] As further described in this invention, the locking mechanism assembly includes a first locking mechanism, a second locking mechanism, a third locking mechanism, a fourth locking mechanism, and a fifth locking mechanism;

[0012] The first locking mechanism is mounted on the first conveyor roller bed;

[0013] The fifth locking mechanism is mounted on the second conveyor roller; the second locking mechanism and the third locking mechanism are mounted on the guide mechanism;

[0014] The fourth locking mechanism is mounted on the third conveyor roller bed.

[0015] A further description of the present invention indicates that the proximity switch unit includes a first proximity switch, a second proximity switch, a third proximity switch, a fourth proximity switch, a fifth proximity switch, a sixth proximity switch, a seventh proximity switch, an eighth proximity switch, a ninth proximity switch, a tenth proximity switch, an eleventh proximity switch, a twelfth proximity switch, and a thirteenth proximity switch.

[0016] The first proximity switch, the second proximity switch, and the third proximity switch are mounted on the first conveyor roller bed;

[0017] The eleventh, twelfth, and thirteenth proximity switches are mounted on the second conveyor roller bed; the ninth and tenth proximity switches are mounted on the guide mechanism.

[0018] The fourth, fifth, and sixth proximity switches are mounted on the third conveyor roller; the seventh and eighth proximity switches are mounted on the side top mechanism.

[0019] A method for operating a multi-vehicle flexible body-in-white stacking chain transfer system includes:

[0020] The body-in-white is fixed to the skid of the skid conveyor mechanism. The skid carrying the body-in-white is accurately transported to the elevator transfer station via the body-in-white conveyor station. The elevator reads the position information of the encoder ruler through the encoder and lifts the skid to the transfer position. The accumulating chain spreader enters the transfer area through the guide mechanism. The proximity switch component on the elevator identifies the position of the accumulating chain spreader. The feedback control system activates the locking mechanism component to fix the accumulating chain spreader. Then the elevator falls to realize the transfer of the body-in-white from the skid to the accumulating chain spreader. After the elevator falls to the position, the conveyor roller assembly transports the skid to the side top mechanism station. The side top mechanism station identifies and fixes the skid through the proximity switch component. At the same time, based on the position information fed back by the proximity switch component, the side top mechanism falls to the lower position. Finally, the conveyor roller assembly of the side top mechanism transports the skid to the skid return station and enters the adjustment line cycle system.

[0021] Further description of the present invention includes the following:

[0022] The control system drives the first conveyor roller of the adjustment line to bring the skid conveyor mechanism carrying the body-in-white into the body-in-white conveying station. The first proximity switch confirms that the skid has entered the station. The second proximity switch decelerates the skid. When the third proximity switch is passed, the skid is in place. The third proximity switch feeds the arrival information back to the control system, which then activates the first locking mechanism to fix the skid.

[0023] The control system activates the first locking mechanism on the first conveyor roller, driving the second conveyor roller to transport the skid to the elevator transfer station. The eleventh proximity switch confirms the skid's entry onto the second conveyor roller. The twelfth proximity switch decelerates the skid, and the thirteenth proximity switch signals the skid to its final position. The thirteenth proximity switch then sends this information back to the control system, activating the fifth locking mechanism to secure the skid. The control system then starts the elevator upwards, reading the encoder scale. When the skid reaches the body-in-white transfer position, the elevator stops, the second locking mechanism engages, and the accumulating chain hoist is activated. The guide mechanism on the lifting machine enters the body-in-white transfer position. When it passes the tenth proximity switch, it is confirmed that the accumulating chain spreader has entered. When it passes the ninth proximity switch, it is confirmed that the accumulating chain spreader is in place. The ninth proximity switch feeds back the placement information to the control system, which activates the third locking mechanism to fix the accumulating chain spreader. The lifting machine is then activated to lower the body-in-white, thus transferring it from the skid to the accumulating chain spreader. The encoder reads the encoder scale, and the lifting machine lowers the skid to the conveying position. At the same time, the second and third locking mechanisms are activated, and the accumulating chain spreader moves out of the transfer station and into the accumulating chain circulation system, eventually entering the painting workshop.

[0024] The control system activates the side-top mechanism to lift the third conveyor roller. The eighth proximity switch stops after detecting the side-top mechanism. The second conveyor roller activates and opens the fifth locking mechanism to transport the skid to the third conveyor roller. The fourth proximity switch confirms that the skid has entered the third conveyor roller. The fifth proximity switch decelerates the skid. The sixth proximity switch sends the positioning information back to the control system, which then activates the fourth locking mechanism to secure the skid. The side-top mechanism then descends to the conveying position. While waiting for the elevator to transfer the second body-in-white, the side-top mechanism activates and opens the fourth locking mechanism to transport the skid to the fourth conveyor roller. The skid then enters the adjustment cycle system.

[0025] Compared with the prior art, the present invention has the following beneficial technical effects:

[0026] This invention establishes a body-in-white conveying station, a lift transfer station, a side-top mechanism station, a skid return station, an accumulation chain hoist, and a skid conveying mechanism. The skid components on the skid conveying mechanism can adapt to various vehicle models. The control system controls the automatic and efficient operation of each component, and the proximity switch component identifies the position of the skid conveying mechanism, ensuring the uniqueness of the position of the skid conveying mechanism for multiple different vehicle models. This guarantees the uniformity of the equipment during subsequent conveying of different models, improves the maintainability of the equipment, increases the flexibility of the conveyor line, and reduces the cost of repeated investment caused by the introduction of new vehicle models. Attached Figure Description

[0027] The invention will be further described below with reference to the accompanying drawings:

[0028] Figure 1 This is a front view of the flexible accumulation chain transfer system of the present invention;

[0029] Figure 2 This is a front view of the skid conveying mechanism of the present invention;

[0030] Figure 3 This is a top view of the body-in-white conveying station of the present invention;

[0031] Figure 4 This is a top view of the second conveying roller bed of the present invention;

[0032] Figure 5 This is a front view of the elevator transfer station of the present invention;

[0033] Figure 6 This is a top view of the elevator transfer station of the present invention;

[0034] Figure 7 This is a top view of the side-top mechanism workstation of the present invention;

[0035] Figure 8This is a front view of the side-top mechanism of the present invention;

[0036] Figure 9 This is a top view of the skid return station of the present invention.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1-Carriage-in-White Conveying Station; 2-Elevator Transfer Station; 3-Side Top Mechanism Station; 4-Skirt Return Station; 5-Accumulation Chain Lifting Device; 6-Control System; 7-First Conveying Roller; 8-First Locking Mechanism; 9-First Proximity Switch; 10-Second Proximity Switch; 11-Third Proximity Switch; 12-Encoder; 13-Encoding Ruler; 14-Elevator; 15-Skirt Conveying Mechanism; 16-Second Conveying Roller; 17-Ninth Proximity Switch; 18-Guide Mechanism; 19-Second Locking Mechanism Mechanism; 20-Third locking mechanism; 21-Tenth proximity switch; 22-Skirt; 23-Fourth locking mechanism; 24-Third conveyor roller bed; 25-Fourth proximity switch; 26-Fifth proximity switch; 27-Sixth proximity switch; 28-Side top mechanism; 29-Seventh proximity switch; 30-Eighth proximity switch; 31-Fourth conveyor roller bed; 32-Fifth locking mechanism; 33-Eleventh proximity switch; 34-Twelfth proximity switch; 35-Thirteenth proximity switch; 36-Base. Detailed Implementation

[0039] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise explicitly specified and limited, the embodiments and features described in the embodiments of this application can be combined with each other. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and a specific embodiment. This description is intended to explain the invention and not to limit it.

[0041] like Figure 1-9As shown, the multi-model flexible body-in-white accumulation chain transfer system of the present invention includes a body-in-white conveying station 1, a lifting transfer station 2, a side-top mechanism station 3, a skid return station 4, an accumulation chain hoist 5, a skid conveying mechanism 15, and a control system 6; the control system 6 can be a programmable PLC, and each of the body-in-white conveying station 1, the lifting transfer station 2, the side-top mechanism station 3, and the skid return station 4 is equipped with a conveying roller assembly, a locking mechanism assembly, and a proximity switch assembly;

[0042] The conveyor roller assembly includes a first conveyor roller 7, a second conveyor roller 16, a third conveyor roller 24, and a fourth conveyor roller 31. The first conveyor roller 7 is installed on the body-in-white conveying station 1, the second conveyor roller 16 is installed on the elevator transfer station 2, the third conveyor roller 24 is installed on the side top mechanism station 3, and the fourth conveyor roller 31 is installed on the skid return station 4. The first conveyor roller 7, the second conveyor roller 16, the third conveyor roller 24, the fourth conveyor roller 31, the elevator 14, and the side top mechanism 28 are each connected to a drive device. The drive devices are connected to a control system 6, and the control system 6 controls the movement of the first conveyor roller 7, the second conveyor roller 16, the third conveyor roller 24, the fourth conveyor roller 31, the elevator 14, and the side top mechanism 28 through the drive devices.

[0043] The locking mechanism assembly includes a first locking mechanism 8, a second locking mechanism 19, a third locking mechanism 20, a fourth locking mechanism 23, and a fifth locking mechanism 32;

[0044] The proximity switch assembly includes a first proximity switch 9, a second proximity switch 10, a third proximity switch 11, a fourth proximity switch 25, a fifth proximity switch 26, a sixth proximity switch 27, a seventh proximity switch 29, an eighth proximity switch 30, a ninth proximity switch 17, a tenth proximity switch 21, an eleventh proximity switch 33, a twelfth proximity switch 34, and a thirteenth proximity switch 35;

[0045] like Figure 2 As shown, the skid conveying mechanism 15 includes a base 36, on which a skid assembly is provided. Each skid 22 is provided with different skid positioning pins and positioning surfaces for fixing different vehicle models.

[0046] like Figure 3 As shown, the white body conveying station 1 includes a first conveying roller bed 7, on which a first locking mechanism 8, a first proximity switch 9, a second proximity switch 10 and a third proximity switch 11 are provided;

[0047] like Figure 4-6As shown, the elevator transfer station 2 includes an elevator 14 and a second conveyor roller bed 16. The elevator 14 is equipped with an encoder 12, a encoder ruler 13, a ninth proximity switch 17, a guide mechanism 18, a second locking mechanism 19, a third locking mechanism 20, and a tenth proximity switch 21. The second conveyor roller bed 16 is equipped with a fifth locking mechanism 32, an eleventh proximity switch 33, a twelfth proximity switch 34, and a thirteenth proximity switch 35. The guide mechanism 18 is equipped with a ninth proximity switch 17, a second locking mechanism 19, a third locking mechanism 20, and a tenth proximity switch 21. In this example, the second conveyor roller bed 16 is installed on the elevator 14. The elevator 14 drives the second conveyor roller bed 16 to move together. The encoder 12 reads the information from the encoder ruler 13 to position the elevator 14, ultimately enabling the roller bed and the skid to move from the skid conveyor position to the accumulation chain transfer position. In this example, the accumulation chain lifting device has multiple sets of positioning pins, and different car bodies are installed on different positioning pins.

[0048] like Figure 7-8 As shown, the side-top mechanism station 3 includes a side-top mechanism 28 and a third conveyor roller bed 24. The side-top mechanism 28 is equipped with a seventh proximity switch 29 and an eighth proximity switch 30. The third conveyor roller bed 24 is equipped with a fourth locking mechanism 23, a fourth proximity switch 25, a fifth proximity switch 26, and a sixth proximity switch 27. In this example, the third conveyor roller bed 24 is installed on the side-top mechanism 28, and the side-top mechanism 28 drives the third conveyor roller bed 24 to move between two positions.

[0049] like Figure 9 As shown, the skid return station 4 includes a fourth conveyor roller bed 31, which enables the skid to return from the lower part of the elevator 14 to the adjustment line circulation station.

[0050] The working method of the multi-model flexible body-in-white accumulation chain transfer system of the present invention is as follows:

[0051] The control system 6 drives the first conveyor roller 7 of the adjustment line to convey the skid conveyor mechanism 15 carrying the body-in-white into the body-in-white conveyor station 1. The first proximity switch 9 confirms that the skid conveyor mechanism 15 has entered the station. The second proximity switch 10 decelerates the skid. The third proximity switch 11 sends the positioning information back to the control system 6, which then activates the first locking mechanism 8 to fix the skid conveyor mechanism 15.

[0052] Control system 6 activates the first locking mechanism 8 on the first conveyor roller bed 7, driving the second conveyor roller bed 16 to transport the skid conveyor mechanism 15 to the elevator transfer station 2. The eleventh proximity switch 33 confirms that the skid conveyor mechanism 15 has entered the second conveyor roller bed 16. The twelfth proximity switch 34 decelerates the skid. The thirteenth proximity switch 35 signals the skid into position and sends this information back to control system 6, activating the fifth locking mechanism 32 to secure the skid conveyor mechanism 15. Control system activating elevator 14 raises the elevator, reading the encoder scale 13 via encoder 12. When the skid reaches the body-in-white transfer position, elevator stops, and the second locking mechanism 19 locks in place. Accumulation chain... The lifting device is initiated and enters the body-in-white transfer position via the guide mechanism on the elevator. When the tenth proximity switch 21 is passed, it is confirmed that the accumulating chain lifting device 5 has entered. When the ninth proximity switch 17 is passed, it is confirmed that the accumulating chain lifting device 5 is in place. The ninth proximity switch 17 feeds back the placement information to the control system 6, which activates the third locking mechanism 20 to fix the accumulating chain lifting device. The elevator 14 is then activated to lower the device, realizing the transfer of the body-in-white from the skid conveyor mechanism 15 to the accumulating chain lifting device 5. The encoder 12 reads the encoder scale 13, and the elevator 14 lowers the skid to the conveying position. At the same time, the second locking mechanism 19 and the third locking mechanism 20 are opened, and the accumulating chain lifting device moves out of the transfer position and enters the accumulating chain circulation system, and then enters the painting workshop. Control system 6 activates side-top mechanism 28 to lift the third conveyor roller bed 24. The eighth proximity switch 30 stops upon detecting the side-top mechanism. The second roller bed activates and opens the fifth locking mechanism 32, conveying the skid conveyor mechanism 15 to the third conveyor roller bed 24. The fourth proximity switch 25 confirms the skid conveyor mechanism 15's entry into the third conveyor roller bed 24. The fifth proximity switch 26 decelerates the skid. The sixth proximity switch 27 signals the skid into position and sends the positioning information back to control system 6, activating the fourth locking mechanism 23 to secure the skid conveyor mechanism 15. The side-top mechanism then descends to the conveying position. While waiting for the elevator 14 to transfer the second white body to rise, the side-top mechanism 28 activates and opens the fourth locking mechanism 23, conveying the skid conveyor mechanism 15 to the skid fourth conveyor roller bed 31. The skid then enters the adjustment cycle system.

[0053] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalent elements of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0054] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A flexible multi-model body-in-white stacking chain transfer system, characterized in that, Includes body-in-white conveying station (1), elevator transfer station (2), side top mechanism station (3), skid return station (4), accumulation chain hoist (5), and skid conveying mechanism (15). The skid conveying mechanism (15) includes a base (36), on which skid components capable of fixing different vehicle models are provided. The white body conveying station (1), the elevator transfer station (2), the side top mechanism station (3), and the skid return station (4) are all equipped with conveying roller assembly, locking mechanism assembly, and proximity switch assembly. The elevator transfer station (2) includes an elevator (14), on which an encoder (13), an encoder (12) for reading the position information of the encoder (13), and a guide mechanism (18) for guiding the accumulating chain lifting device (5) are respectively provided. The side top mechanism station (3) includes a side top mechanism (28). The body-in-white is fixed to the skid of the skid conveying mechanism (15). The skid with the body-in-white is accurately transported to the elevator transfer station (2) through the body-in-white conveying station (1). The elevator (14) reads the position information of the encoder ruler (13) through the encoder (12) and lifts the skid to the transfer position. The accumulation chain lifting device (5) enters the transfer area through the guide mechanism (18). The proximity switch component on the elevator (14) identifies the position of the accumulation chain lifting device (5). The feedback control system (6) activates the locking mechanism component to fix the accumulation chain. The lifting device (5) is then lowered by the elevator (14) to realize the transfer of the white body from the skid to the accumulation chain lifting device (5). After the elevator (14) is lowered into place, the conveying roller assembly transports the skid to the side top mechanism station (3). The side top mechanism station (3) identifies and fixes the skid through the proximity switch assembly. At the same time, the side top mechanism (28) is lowered to the lower position through the position information fed back by the proximity switch assembly. Finally, the conveying roller assembly of the side top mechanism (28) transports the skid to the skid return station (4) and enters the adjustment line circulation system.

2. The multi-model flexible body-in-white stacking chain transfer system as described in claim 1, characterized in that, It also includes a control system (6); the control system (6) is a programmable PLC.

3. The multi-model flexible body-in-white stacking chain transfer system as described in claim 2, characterized in that, The conveyor roller assembly includes a first conveyor roller (7), a second conveyor roller (16), a third conveyor roller (24), and a fourth conveyor roller (31). The first conveying roller (7), the second conveying roller (16), the third conveying roller (24), and the fourth conveying roller (31) are respectively set on the white body conveying station (1), the elevator transfer station (2), the side top mechanism station (3), and the skid return station (4); The first conveying roller (7), the second conveying roller (16), the third conveying roller (24), the fourth conveying roller (31), the elevator (14) and the side top mechanism (28) are respectively connected to driving devices, and the driving devices are connected to the control system (6).

4. The multi-model flexible body-in-white stacking chain transfer system as described in claim 3, characterized in that, The locking mechanism assembly includes a first locking mechanism (8), a second locking mechanism (19), a third locking mechanism (20), a fourth locking mechanism (23), and a fifth locking mechanism (32). The first locking mechanism (8) is mounted on the first conveying roller bed (7); The fifth locking mechanism (32) is mounted on the second conveying roller bed (16); the second locking mechanism (19) and the third locking mechanism (20) are mounted on the guide mechanism (18); The fourth locking mechanism (23) is mounted on the third conveying roller bed (24).

5. The multi-model flexible body-in-white stacking chain transfer system as described in claim 4, characterized in that, The proximity switch assembly includes a first proximity switch (9), a second proximity switch (10), a third proximity switch (11), a fourth proximity switch (25), a fifth proximity switch (26), a sixth proximity switch (27), a seventh proximity switch (29), an eighth proximity switch (30), a ninth proximity switch (17), a tenth proximity switch (21), an eleventh proximity switch (33), a twelfth proximity switch (34), and a thirteenth proximity switch (35). The first proximity switch (9), the second proximity switch (10), and the third proximity switch (11) are mounted on the first conveyor roller bed (7); The eleventh proximity switch (33), the twelfth proximity switch (34), and the thirteenth proximity switch (35) are mounted on the second conveyor roller bed (16); the ninth proximity switch (17) and the tenth proximity switch (21) are mounted on the guide mechanism (18); The fourth proximity switch (25), the fifth proximity switch (26), and the sixth proximity switch (27) are mounted on the third conveyor roller bed (24); the seventh proximity switch (29) and the eighth proximity switch (30) are mounted on the side top mechanism (28).

6. The working method of the multi-model flexible body-in-white stacking chain transfer system as described in any one of claims 1-5, characterized in that, Specifically, it includes the following: The control system (6) drives the first conveyor roller (7) of the adjustment line to bring the skid conveyor mechanism (15) carrying the white body into the white body conveyor station (1). The first proximity switch (9) confirms that the skid has entered the station. The second proximity switch (10) decelerates the skid. When the third proximity switch (11) is passed, the skid is in place. The third proximity switch (11) feeds the information of the position back to the control system (6) and starts the first locking mechanism (8) to fix the skid. The control system (6) opens the first locking mechanism (8) on the first conveyor roller (7), drives the second conveyor roller (16) to transport the skid to the elevator transfer station (2), confirms the skid enters the second conveyor roller (16) through the eleventh proximity switch (33), the skid decelerates through the twelfth proximity switch (34), and the skid is in position when it passes the thirteenth proximity switch (35). The thirteenth proximity switch (35) feeds the position information back to the control system (6), activates the fifth locking mechanism (32) to fix the skid, the control system (6) starts the elevator (14) to rise, reads the encoder scale (13) through the encoder (12), when the skid rises to the white body transfer position, the elevator (14) stops, the second locking mechanism (19) locks in position, the accumulating chain hoist (5) starts, and the system activates the elevator (14) to lift the skid. The guide mechanism (18) on the elevator (14) enters the white body transfer position. When the tenth proximity switch (21) is passed, it is confirmed that the accumulating chain lifting device (5) has entered. When the ninth proximity switch (17) is passed, it is confirmed that the accumulating chain lifting device (5) is in place. The ninth proximity switch (17) feeds back the information of the position to the control system (6), starts the third locking mechanism (20), fixes the accumulating chain lifting device (5), starts the elevator (14) to fall, and realizes the transfer of the white body from the skid to the accumulating chain lifting device (5). The encoder (12) reads the encoder scale (13), the elevator (14) lowers the skid to the conveying position, and at the same time opens the second locking mechanism (19) and the third locking mechanism (20). The accumulating chain lifting device (5) drives out of the transfer station and enters the accumulating chain circulation system and enters the painting workshop. The control system (6) starts the side top mechanism (28) to lift the third conveyor roller (24). The eighth proximity switch (30) stops after recognizing the side top mechanism (28). The second conveyor roller (16) starts to open the fifth locking mechanism (32) and conveys the skid to the third conveyor roller (24). The fourth proximity switch (25) confirms that the skid has entered the third conveyor roller (24). The skid decelerates through the fifth proximity switch (26). The skid is in place through the sixth proximity switch (27). The sixth proximity switch (27) feeds the position information back to the control system (6). The fourth locking mechanism (23) is started to fix the skid. Then the side top mechanism (28) falls to the conveying position. When the elevator (14) transfers the second white body to rise, the side top mechanism (28) starts to open the fourth locking mechanism (23) and conveys the skid to the fourth conveyor roller (31). Then the skid enters the adjustment cycle system.

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