Multi-vehicle roof flexible positioning system

Abstract

The application discloses a multi-vehicle roof flexible positioning system, which comprises flexible positioning clamps, roof positioning grippers, positioning trolleys and conveying rolling beds. Two flexible positioning clamps are arranged on the two sides of the positioning trolley. The flexible clamp comprises a lower vehicle body clamp frame, which is connected with a first guide rail, a first switching sliding table, a fourth locking cylinder, an eighth limiting block, a ninth limiting block, a first switching cylinder, a second limiting cylinder, the first switching sliding table is slidingly connected to the first guide rail, the first switching cylinder is used to drive the first switching sliding table to move along the first guide rail, the first switching sliding table is connected with a first locking cylinder, a second locking cylinder, a third locking cylinder, a first limiting cylinder, a second guide rail, a second switching sliding table, a second switching cylinder, a fourth limiting block, a fifth limiting block, a first positioning pin and a third clamping unit.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of automobile assembly, and particularly relates to a flexible positioning system for a roof of a plurality of vehicle models. BACKGROUND

[0002] With the increasingly fast replacement of heavy truck body platforms, the space requirements for the body platforms are increasingly high. However, the existing roof feeding mode cannot meet the positioning of roof assemblies of different heights, lengths and widths of different body platforms. In addition, the relative position between the body platform and the accumulation chain is poor, and the relative accuracy of the roof and the lower body cannot be guaranteed, which requires manual adjustment at the general assembly station or rework when the cab assembly is assembled. SUMMARY

[0003] In order to overcome the shortcomings of the prior art, the present application provides a flexible positioning system for a roof of a plurality of vehicle models to solve the problem that the existing lifting appliance cannot adapt to multiple roofs.

[0004] In order to solve the above-mentioned problems existing in the prior art, the technical scheme adopted by the present application is as follows:

[0005] A flexible positioning system for a roof of a plurality of vehicle models, comprising a flexible positioning clamp, a roof positioning gripper, a positioning trolley and a conveying roller bed.

[0006] The flexible positioning clamp is provided with two, and the two flexible positioning clamps are respectively arranged on the two sides of the positioning trolley. The flexible clamp comprises a lower body clamp frame, and the lower body clamp frame is connected with a first guide rail, a first switching sliding table, a fourth locking cylinder, an eighth limiting block, a ninth limiting block, a first switching cylinder and a second limiting cylinder. The first switching sliding table is slidingly connected to the first guide rail, and the first switching cylinder is used to drive the first switching sliding table to move along the first guide rail.

[0007] The first switching sliding table is connected with a first locking cylinder, a second locking cylinder, a third locking cylinder, a first limiting cylinder, a second guide rail, a second switching sliding table, a second switching cylinder, a fourth limiting block, a fifth limiting block, a first positioning pin and a third clamping unit. The second switching sliding table is slidingly connected to the second guide rail, and the second switching cylinder drives the second switching sliding table to move along the second guide rail.

[0008] The second switching sliding table is connected with a first limiting block, a second limiting block, a third limiting block, a first clamping unit and a twelfth limiting block, so as to fix the body platform and fix the space size of the body platform.

[0009] Further, the eighth limiting block and the ninth limiting block are connected to two ends of the lower vehicle body clamp frame respectively, and are used for limiting the X direction of the first switching sliding table, wherein the X direction refers to the moving direction of the first switching sliding table, the second limiting cylinder is arranged on one side of the lower vehicle body clamp frame connected with the ninth limiting block, the second locking cylinder is arranged between the first locking cylinder and the third locking cylinder, the third locking cylinder is arranged between the second locking cylinder and the first limiting cylinder, the first switching cylinder and the second switching cylinder are arranged vertically, wherein the vertical refers to the out-of-plane vertical, the first switching cylinder and the second switching cylinder can drive the second switching sliding table to move along the X / Y direction, the fourth limiting block and the fifth limiting block are used for limiting the Y direction of the second switching sliding table, wherein the Y direction refers to the moving direction of the second switching sliding table, and the first positioning pin is arranged on the top of the first switching sliding table.

[0010] Further, the top cover positioning gripper is connected to the flexible positioning clamp, and the top cover positioning gripper comprises a gripper body frame, the gripper body frame is connected with a top cover gripper rear positioning block, a top cover front positioning block, a suction cup, a second clamping unit, a second positioning pin and a detection switch, the top cover gripper rear positioning block and the top cover front positioning block are connected with the flexible positioning clamp, the suction cup and the second clamping unit are used for clamping the vehicle cover, and the positioning trolley comprises a third positioning pin, a trolley body, an encoder ruler and a tenth limiting block, the third positioning pin, the encoder ruler and the tenth limiting block are all mounted on the trolley body, and the third positioning pin is used for positioning the vehicle cover. Through the positioning combination of the top cover positioning gripper and the flexible tooling, the three-dimensional size positioning of different vehicle models (top cover and lower vehicle body) is realized, and the positioning accuracy of the top cover assembly reaches ±1.0 mm.

[0011] Further, the flexible positioning clamp is provided with a switching mechanism and a limiting mechanism, and through the switching of the limiting block and the locking mechanism, the positioning switching of different lengths (1700 mm, 2000 mm, 3000 mm) and different widths (2300 mm, 2500 mm) is realized, and the positioning accuracy reaches ±0.1 mm.

[0012] Further, the conveying roller bed is arranged on the lower side of the positioning trolley, and the conveying roller bed comprises a roller bed body, the roller bed body is connected with an eleventh limiting block, a fourth positioning pin, a first limiting wheel and an encoder, and the encoder is used for reading the encoder ruler.

[0013] Further, the robot is connected to the robot base, the top cover positioning gripper is connected to the flexible positioning clamp, and the positioning trolley is connected to the conveying roller bed.

[0014] The beneficial effects of the present application are:

[0015] This invention positions the body-in-white on a flexible trolley and transports it to the final assembly station via a conveyor roller. The roller's descent positions the trolley, thus positioning the body-in-white. By switching the X-axis limit blocks, different length models can be positioned, and then the Y-axis limit blocks can be switched to position different width models.

[0016] After the top cover positioning gripper of the present invention grips the top cover assembly, it is installed on the positioning pin and positioning surface of the flexible positioning fixture to realize the three-dimensional positioning between the gripper and the tooling, that is, to realize the three-dimensional positioning between the top cover assembly and the lower body assembly.

[0017] After welding is completed, the gripper and tooling are opened respectively, and finally the roller bed is raised and the trolley is transported to the next welding station.

[0018] This invention uses a flexible positioning fixture that can be flexibly switched between different lengths and widths, with a positioning accuracy of ±0.1mm. It has the advantages of being fast, simple, and highly accurate.

[0019] The positioning gripper of this invention can adapt to different lengths, widths, and heights of roofs according to different vehicle models for positioning and gripping. Through mutual positioning with the flexible positioning fixture, it can achieve spatial three-dimensional positioning of different body-in-whites, and ultimately achieve an accuracy of ±1.0mm for the roof on the body-in-white.

[0020] This invention can ensure the consistency of positioning for different models in subsequent production, the uniformity of conveying equipment, tooling, grippers, etc., improve the maintainability of equipment and tooling, increase the flexibility of positioning different roofs, and reduce the repeated investment costs caused by the introduction of new models in the later stages. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 for Figure 1 Schematic diagram of a single-sided structure of a flexible positioning fixture Figure 1 ;

[0023] Figure 3 Schematic diagram of a single-sided structure of a flexible positioning fixture Figure 2 ;

[0024] Figure 4 for Figure 3 A magnified view of part A in the middle;

[0025] Figure 5 A partial schematic diagram of a flexible positioning fixture;

[0026] Figure 6 Schematic diagram of the positioning trolley Figure 1 ;

[0027] Figure 7 Schematic diagram of the positioning trolley Figure 2 ;

[0028] Figure 8 Schematic diagram of the top cover positioning gripper Figure 1 ;

[0029] Figure 9 Schematic diagram of the top cover positioning gripper Figure 2 ;

[0030] Figure 10 for Figure 9 A magnified view of part B in the middle section;

[0031] Figure 11 Schematic diagram of the conveyor roller bed Figure 1 ;

[0032] Figure 12 Schematic diagram of the conveyor roller bed Figure 2 .

[0033] In the diagram: 1-Flexible positioning fixture; 2-Top cover positioning gripper; 3-Positioning trolley; 4-Conveyor roller bed; 5-First limit block; 6-First locking cylinder; 7-Second locking cylinder; 8-Third locking cylinder; 9-First limit cylinder; 10-Second limit block; 11-Third limit block; 12-Fourth limit block; 13-Fifth limit block; 14-Lower body fixture frame; 15-Sixth limit block; 16-First positioning pin; 17-Second limit cylinder; 18-Eighth limit block; 19-First switching cylinder; 20-Fourth locking cylinder; 21-First switching slide; 22-Second switching cylinder ; 23-Second switching slide; 24-First clamping unit; 25-Rear positioning block of top cover gripper; 26-Front positioning block of top cover; 27-Suction cup; 28-Second clamping unit; 29-Second positioning pin; 30-Third positioning pin; 31-Cart body; 32-Encoder ruler; 33-Tenth limit block; 34-Eleventh limit block; 35-Fourth positioning pin; 36-First limit wheel; 37-Encoder; 38-Roller bed body; 39-Ninth limit block; 40-Gripper body frame; 41-Detection switch; 45-Twelfth limit block; 46-Third clamping unit; 47-Fifth locking cylinder. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings and reference numerals.

[0035] 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 specified, the embodiments and features described in these embodiments can be combined with each other.

[0036] The terms “first,” “second,” “third,” etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0037] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0039] Example 1:

[0040] like Figures 1-12 As shown, a flexible positioning system for roofs of multiple vehicle models includes a flexible positioning fixture 1, a roof positioning gripper 2, a positioning trolley 3, and a conveying roller bed 4.

[0041] Two flexible positioning fixtures 1 are provided, and the two flexible positioning fixtures 1 are respectively located on both sides of the positioning trolley 3. The flexible fixture includes a lower body fixture frame 14. The lower body fixture frame 14 is connected to a first guide rail (not shown in the figure), a first switching slide 21, a fourth locking cylinder 20, an eighth limiting block 18, a ninth limiting block 39, a first switching cylinder 19, and a second limiting cylinder 17. The first switching slide 21 is slidably connected to the first guide rail. The first switching cylinder 19 is used to drive the first switching slide 21 to move along the first guide rail.

[0042] The first switching slide 21 is connected to a first locking cylinder 6, a second locking cylinder 7, a third locking cylinder 8, a first limiting cylinder 9, a second guide rail (not shown in the figure), a second switching slide 23, a second switching cylinder 22, a fourth limiting block 12, a fifth limiting block 13, a first positioning pin 16, and a third clamping unit 46. The second switching slide 23 is slidably connected to the second guide rail, and the second switching cylinder 22 drives the second switching slide 23 to move along the second guide rail.

[0043] The second switching slide 23 is connected to the first limiting block 5, the second limiting block 10, the third limiting block 11, the first clamping unit 24, and the twelfth limiting block 45, so as to fix the body-in-white and fix the spatial dimensions of the body-in-white.

[0044] Example 2:

[0045] On the basis of embodiment 1, the eighth limiting block 18 and the ninth limiting block 39 are connected to the two ends of the lower vehicle body fixture frame 14 respectively, and are used for limiting the X direction of the first switching sliding table 21, wherein the X direction refers to the moving direction of the first switching sliding table 21.

[0046] The second limiting cylinder 17 is arranged on the side of the lower vehicle body fixture frame 14 connected with the ninth limiting block 39.

[0047] The second clamping cylinder 7 is arranged between the first clamping cylinder 6 and the third clamping cylinder 8, and the third clamping cylinder 8 is arranged between the second clamping cylinder 7 and the first limiting cylinder 9.

[0048] The first switching cylinder 19 and the second switching cylinder 22 are arranged vertically, wherein the vertical is out-of-plane vertical, and the first switching cylinder 19 and the second switching cylinder 22 can drive the second switching sliding table 23 to move along the X / Y direction.

[0049] The fourth limiting block 12 and the fifth limiting block 13 are used for limiting the Y direction of the second switching sliding table 23, wherein the Y direction refers to the moving direction of the second switching sliding table 23.

[0050] The first positioning pin 16 is arranged on the top of the first switching sliding table 21.

[0051] Embodiment 3:

[0052] On the basis of embodiment 2, the top cover positioning gripper 2 is connected to the flexible positioning fixture 1, and the top cover positioning gripper 2 comprises a gripper body frame 40, the gripper body frame 40 is connected with a top cover gripper rear positioning block 25, a top cover front positioning block 26, a suction cup 27, a second clamping unit 28, a second positioning pin 29 and a detection switch 41, the top cover gripper rear positioning block 25 and the top cover front positioning block 26 are connected with the flexible positioning fixture 1, and the suction cup 27 and the second clamping unit 28 are used for clamping the vehicle cover.

[0053] Embodiment 4:

[0054] On the basis of embodiment 3, the positioning trolley 3 comprises a third positioning pin 30, a trolley body 31, an encoder ruler 32 and a tenth limiting block 33, the third positioning pin 30, the encoder ruler 32 and the tenth limiting block 33 are all installed on the trolley body 31, and the third positioning pin 30 is used for positioning the vehicle cover.

[0055] The conveying roller bed 4 is arranged on the lower side of the positioning trolley 3, and the conveying roller bed 4 comprises a roller bed body 38, the roller bed body 38 is connected with an eleventh limiting block 34, a fourth positioning pin 35, a first limiting wheel 36 and an encoder 37, and the encoder 37 is used for reading the encoder ruler 32.

[0056] The robot is connected to the robot base.

[0057] The top cover positioning gripper 2 is connected to the flexible positioning clamp 1.

[0058] The positioning trolley 3 is connected to the conveying roller bed 4.

[0059] Specific working principle:

[0060] When the positioning trolley 3 carrying the body-in-white enters the general assembly station, the control system drives the conveying roller bed 4 to transport the positioning trolley 3, the encoder 37 reads the coded ruler 32, and the positioning trolley 3 is stopped above the first positioning pin 16. The control system drives the conveying roller bed 4 to fall until the tenth limit block 33 and the eleventh limit block 34 are in contact, the first positioning pin 16 and the first limit wheel 36 realize the X and Y direction positioning of the positioning trolley 3, the eleventh limit block 34 realizes the Z direction positioning of the positioning trolley 3, and finally the positioning of the body-in-white position is realized. According to the production model, the control system drives the flexible positioning clamp 1 to switch, and the second switching sliding table 23 realizes the X direction length switching of the model:

[0061] When producing a 2300mm top cover in the X direction, the first limit block 5 and the sixth limit block 15 are in contact, and the second locking cylinder 7 is locked;

[0062] When producing a 2000mm top cover in the X direction, the first limit cylinder 9 and the fifth limit block 13 are in contact, the second switching sliding table 23 moves, the second limit block 10 and the first limit cylinder 9 are in contact, and the first locking cylinder 6 is locked;

[0063] When producing a 1700mm top cover in the X direction, the second switching sliding table 23 moves, the third limit block 11 and the fourth limit block 12 are in contact, and the third locking cylinder 8 is locked, finally realizing the switching of different lengths in the X direction;

[0064] After the second switching sliding table 23 moves and switches, the first switching cylinder 19 pushes the 21-first switching sliding table 21 to move in the Y direction:

[0065] When the model width is 2500mm, the first switching sliding table 21 moves and the ninth limit block 39 is in contact, and the fourth locking cylinder 20 is locked;

[0066] When the model width is 2300mm, the second limit cylinder 17 clamps and the ninth limit block 39 is in contact to form a limit, the first switching sliding table 21 moves and the ninth limit block 39 is in contact, the fifth locking cylinder 47 is locked, and finally the positioning switching of different widths in the Y direction is realized. According to the planning and process requirements of a certain model of new product, it is necessary to meet the flexible positioning of 7 kinds of top cover assemblies, as shown in the following table:

[0067] Vehicle type Height Length Width Roof A 0 1700 2300 Roof B 36 2000 2300 Roof C 64 2000 2300 Roof D 36 2300 2300 Roof E 64 2300 2300 Roof F 36 2300 2500 Roof G 112 2300 2500

[0068] According to the vehicle type information, the control system drives the robot to grab the roof positioning gripper 2, the roof positioning gripper 2 corresponds to the roof assembly, the second positioning pin 29 positions the roof, the second clamping unit 28 fixes the roof while preventing the roof from falling to ensure personnel safety, the suction cup 27 fixes other areas of the roof, and the detection switch 41 identifies the type of the roof to determine whether the roof meets the production requirements. The robot 43 installs the roof positioning gripper 2 on the flexible positioning clamp 1, the first positioning pin 16 and the roof front positioning block 26 are combined to realize X and Y direction positioning of the roof positioning gripper 2, the twelfth limiting block 45 and the roof gripper rear positioning block 25 are combined to realize Z direction positioning of the roof positioning gripper 2, and through switching of different roof positioning grippers 2, positioning between different roof assemblies and the body-in-white body is realized. After the roof positioning gripper 2 is installed in place, the first clamping unit 24 and the third clamping unit 46 on the flexible positioning clamp 1 are clamped to realize fixation of the roof assembly and the lower body, then the robot 43 performs welding, after welding, the first clamping unit 24 and the third clamping unit 46 are opened, the robot 43 removes the roof positioning, the second switching sliding table 23 and the first switching sliding table 21 are all opened, the control system 42 drives the conveying roller bed 4 and the flexible trolley to rise, and then the conveying roller bed 4 conveys the flexible trolley to the next welding station.

[0069] The present application is not limited to the above-mentioned optional embodiments, and anyone can derive other various forms of products under the inspiration of the present application, but regardless of any changes in shape or structure, any technical solutions falling within the scope defined by the claims of the present application fall within the protection scope of the present application.

Claims

1. A multi-vehicle roof flexible positioning system, characterized by: It includes flexible positioning clamp (1), top cover positioning gripper (2), positioning trolley (3), conveying roller bed (4); The flexible positioning clamp (1) is provided with two, two flexible positioning clamps (1) are respectively arranged on the two sides of the positioning trolley (3), and the flexible clamp comprises a lower vehicle body clamp frame (14), the lower vehicle body clamp frame (14) is connected with a first guide rail, a first switching sliding table (21), a fourth dead cylinder (20), an eighth limiting block (18), a ninth limiting block (39), a first switching cylinder (19), a second limiting cylinder (17), the first switching sliding table (21) is slidably connected to the first guide rail, and the first switching cylinder (19) is used to drive the first switching sliding table (21) to move along the first guide rail; The first switching sliding table (21) is connected with a first dead cylinder (6), a second dead cylinder (7), a third dead cylinder (8), a first limiting cylinder (9), a second guide rail, a second switching sliding table (23), a second switching cylinder (22), a fourth limiting block (12), a fifth limiting block (13), a first positioning pin (16) and a third clamping unit (46), the second switching sliding table (23) is slidably connected to the second guide rail, and the second switching cylinder (22) drives the second switching sliding table (23) to move along the second guide rail; The second switching sliding table (23) is connected with a first limiting block (5), a second limiting block (10), a third limiting block (11), a first clamping unit (24) and a twelfth limiting block (45); The positioning trolley (3) comprises a third positioning pin (30), a trolley body (31), an encoded ruler (32) and a tenth limiting block (33), and the third positioning pin (30), the encoded ruler (32) and the tenth limiting block (33) are all installed on the trolley body (31); The conveying roller bed (4) is arranged on the lower side of the positioning trolley (3), and the conveying roller bed (4) comprises a roller bed body (38), the roller bed body (38) is connected with an eleventh limiting block (34), a fourth positioning pin (35), a first limiting wheel (36) and an encoder (37); When the positioning trolley (3) carrying the body-in-white enters the general assembly station, the control system drives the conveying roller bed (4) to transport the positioning trolley (3), the encoded ruler (32) read by the encoder (37) stops the positioning trolley (3) above the first positioning pin (16), the control system drives the conveying roller bed (4) to fall until the tenth limiting block (33) and the eleventh limiting block (34) are in contact, the first positioning pin (16) and the first limiting wheel (36) realize X and Y direction limiting of the positioning trolley (3), and the eleventh limiting block (34) realizes Z direction limiting of the positioning trolley (3), so that the position of the body-in-white is finally positioned; According to the production model, the control system drives the flexible positioning clamp (1) to switch, and the second switching sliding table (23) realizes X direction length switching of the model: When the X direction is 2300mm, the first limiting block (5) and the sixth limiting block (15) are in contact, and the second dead cylinder (7) is dead. When the production X is 2000mm roof, the first limit cylinder (9) and the fifth limit block (13) are in contact, the second switching slide (23) moves, the second limit block (10) and the first limit cylinder (9) are in contact, and the first dead cylinder (6) is deadlocked; When the production X is 1700mm roof, the second switching slide (23) moves, the third limit block (11) and the fourth limit block (12) are in contact, the third dead cylinder (8) is deadlocked, and finally the switching of different lengths in X direction is realized; After the second switching slide (23) moves and the switching is completed, the first switching cylinder (19) pushes the first switching slide (21) to move along Y direction: When the vehicle width is 2500mm, the first switching slide (21) moves and the ninth limit block (39) is in contact, the fourth dead cylinder (20) is deadlocked; When the vehicle width is 2300mm, the second limit cylinder (17) clamps and the ninth limit block (39) is in contact to form a limit, the first switching slide (21) moves and the ninth limit block (39) is in contact, the fifth dead cylinder (47) is deadlocked, and finally the positioning switching of different widths in Y direction is realized.

2. The multi-vehicle roof flexible positioning system of claim 1, wherein: The roof positioning gripper (2) is connected to the flexible positioning clamp (1), and the roof positioning gripper (2) comprises a gripper body frame (40), wherein the gripper body frame (40) is connected with a roof gripper rear positioning block (25), a roof front positioning block (26), a suction cup (27), a second clamping unit (28), a second positioning pin (29) and a detection switch (41).

3. The multi-vehicle roof flexible positioning system of claim 1, wherein: The eighth limit block (18) and the ninth limit block (39) are respectively connected to both ends of the lower vehicle body clamp frame (14).

4. The multi-vehicle roof flexible positioning system of claim 3, wherein: The second limit cylinder (17) is arranged on one side of the lower vehicle body clamp frame (14) connected with the ninth limit block (39).

5. The multi-vehicle roof flexible positioning system of claim 1, wherein: The second dead cylinder (7) is arranged between the first dead cylinder (6) and the third dead cylinder (8), and the third dead cylinder (8) is arranged between the second dead cylinder (7) and the first limit cylinder (9).

6. The multi-vehicle roof flexible positioning system of claim 5, wherein: The first switching cylinder (19) and the second switching cylinder (22) are arranged vertically, and the vertical here means out-of-plane vertical. Through the cooperation of the first switching cylinder (19) and the second switching cylinder (22), the second switching slide (23) can be driven to move along X / Y direction.

7. The multi-vehicle roof flexible positioning system of claim 1, wherein: The first positioning pin (16) is arranged at the top of the first switching slide (21).

8. The multi-vehicle roof flexible positioning system of claim 1, wherein: Further comprising a robot, wherein the robot is connected to the robot base.

Images