General assembly tire tightening sleeve switching device

Abstract

The general assembly tire tightening sleeve switching device comprises a workbench, a base is arranged in the middle of the workbench, a first through hole is formed in the base, and a limiting structure is arranged on one side of the first through hole; by means of the general assembly tire tightening sleeve switching device, the working efficiency is improved, the number of stations is reduced, and the cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile tire assembly, and in particular to a tightening sleeve switching device for assembled tires. Background Art

[0002] With the rapid development of automobiles, the flexibility requirements of automobile production lines are getting higher and higher, and each production line can be compatible with multiple models. The tightening bolts for tires of different models are also different. The tire automatic stations of major OEMs need to be compatible with tightening bolts of different sizes to achieve multiple models on the same line. In order to ensure the correct installation of different bolts, currently a separate robot is mainly used to control the tightening sleeve. Usually, different bolts are tightened by different robots or two semi-automatic manual tightening equipment to solve the problem. However, these two methods have low work efficiency and will increase the number of workstations, labor costs and production line planning investment costs.

[0003] The utility model patent with publication number CN220111498U was disclosed on December 1, 2023, and its name is a tire fixing device for a tire coating machine, including a support seat; two symmetrical fixing seats are fixedly connected to the top of the support seat, and both fixing seats are equipped with sleeves. A spring is fixedly connected to the inner wall of one end of the sleeve close to the fixed seat, and a clamping roller is installed at the other end of the movable rod. A groove is provided on the support seat, and a first motor is installed on one side of the support seat. A bidirectional screw rod is connected to the output end of the first motor, and an arc-shaped clamping plate is fixedly connected to the L-shaped plate; the tire fixing device for the tire coating machine cannot solve the technical problems recorded above. Summary of the invention

[0004] The purpose of the present invention is to provide a tire tightening sleeve switching device for assembly, which can improve work efficiency, reduce the number of workstations and reduce costs, in view of the shortcomings of the prior art.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] The tire tightening sleeve switching device for final assembly includes a workbench, a base is provided in the middle of the workbench, a first through hole is provided on the base, and a limiting structure is provided on one side of the first through hole; a support plate is provided under the workbench, and the support plate is connected to a first cylinder.

[0007] A bracket is connected to the bottom of the workbench, the first cylinder is arranged on the bracket, and the piston rod of the first cylinder is connected to the bottom of the support plate.

[0008] The limiting structure includes a stopper, which is located between the mounting grooves. A turntable is provided in the middle of the base, and the stopper is fixedly connected to the edge of the turntable. A second cylinder is also provided on the workbench, and a piston rod of the second cylinder is connected to a push block. The turntable and the push block are connected by a connecting rod; a limiting groove is provided on the connecting rod, and a limiting rod is provided at the top of the push block, and the limiting rod is located in the limiting groove.

[0009] A substrate is arranged above the base, a second through hole is arranged on the substrate, and the through hole corresponds to the first through hole axially; a support shaft is connected between the substrate and the base, and the top end of the support shaft is a stepped structure.

[0010] The first through holes and the second through holes are evenly distributed along the circumferential direction.

[0011] A rotating shaft is provided in the middle of the base, the turntable is rotatably connected to the rotating shaft, a limiting flange is provided at the top of the rotating shaft, a limiting block is provided at the top of the limiting rod, the connecting rod is horizontally arranged, and the bottom ends of the limiting flange and the limiting block are both in contact with the upper end surface of the connecting rod.

[0012] The bracket is provided with a guide shaft, the top end of the guide shaft is fixedly connected to the support plate, the bottom end of the guide shaft extends out from the bracket, and the guide shaft is evenly distributed along the circumferential direction.

[0013] Mounting brackets are provided at both ends of the workbench. The mounting brackets are higher than the base. A photoelectric detection switch is provided on the top of the mounting bracket. The cross section of the mounting bracket is a Z-shaped structure, and waist-shaped mounting holes are evenly distributed on the mounting bracket.

[0014] An extension plate is arranged at the end of the rotating disk, the stopper is arranged on the extension plate, and a bolt hole is arranged on the stopper.

[0015] The workbench is provided with a positioning bracket, the positioning bracket is an L-shaped structure, the second cylinder is fixed on the positioning bracket, and a waist-shaped positioning hole is provided on the top of the positioning bracket.

[0016] The technical effect of the present invention is as follows: the assembly tire tightening sleeve switching device of the present invention is adopted, and the tightening sleeve is lifted and lowered by the first cylinder to achieve alignment installation with the robot; the tightening sleeve is restricted in the axial direction by the rotational drive of the second cylinder to facilitate the separation of the tightening sleeve from the robot; the device has a reasonable structural design and high installation accuracy, which can ensure the stability of the tightening sleeve when taking and storing, ensure the accurate positioning of the robot, reduce operating errors and improve production efficiency. The device is used with the automatic distribution of the robot to achieve rapid switching of different tightening sleeves and the sharing of robots for the tightening processes of tire bolts of different models, so as to meet the tightening of fixing bolts of different tires, which is conducive to the co-production of tires of different models, improves the utilization efficiency of equipment, shortens the maintenance time, reduces the number of production line stations and the occupied area, and reduces the personnel, equipment and investment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] This specification includes the following drawings, which show the following contents:

[0018] Figure 1 is a front view of the assembly tire tightening sleeve switching device of the present invention;

[0019] Figure 2 is a top view of the assembly tire tightening sleeve switching device of the present invention;

[0020] Figure 3 is a bottom view of the assembly tire tightening sleeve switching device of the present invention;

[0021] Figure 4 It is a partial three-dimensional schematic diagram of the assembly tire tightening sleeve switching device of the present invention;

[0022] Figure 5 It is a front view of the partial structure of the assembly tire tightening sleeve switching device of the present invention;

[0023] Figure 6 It is a schematic diagram of the structure of the components on the workbench of the present invention;

[0024] Figure 7 It is a structural schematic diagram of the second cylinder and its associated structure of the present invention.

[0025] Markings in the figure are: 1. workbench; 11. frame; 12. foot; 13. tightening sleeve; 2. base; 21. first through hole; 22. turntable; 23. stopper; 24. extension plate; 25. bolt hole; 26. rotating shaft; 27. limiting flange; 28. supporting shaft; 3. first cylinder; 31. supporting plate; 32. bracket; 33. guide shaft; 34. reinforcing rib; 4. second cylinder; 41. push block; 42. limiting rod; 43. limiting groove; 44. connecting rod; 45. limiting block; 46. positioning bracket; 47. waist-shaped positioning hole; 5. mounting bracket; 51. photoelectric detection switch; 52. waist-shaped mounting hole; 6. substrate; 61. second through hole. DETAILED DESCRIPTION

[0026] The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and facilitating their implementation.

[0027] like Figures 1 to 3 As shown, the assembly tire tightening sleeve switching device includes a workbench 1, a base 2 is provided in the middle of the workbench 1, a first through hole 21 is provided on the base 2, and a limiting structure is provided on one side of the first through hole 21; a support plate 31 is provided under the workbench 1, and the support plate 31 is connected to the first cylinder 3.

[0028] In the above structure, the workbench 1 is formed by welding a steel plate and a square frame 11, and the frame 11 is formed by welding a square tube, which has a low manufacturing cost. Four feet 12 are arranged at the bottom to ensure the flatness of the top table and the installation accuracy of each component. The first through hole 21 is used to limit the radial movement of the tightening sleeve to ensure the stable position of the tightening sleeve. The block 23 serves as a limiting structure of the tightening sleeve, which can limit the tightening sleeve in the axial direction, further ensuring its stable position and ensuring that the tightening sleeve can be separated from the robot. The first cylinder 3 can lift the tightening sleeve and install it in alignment with the manipulator.

[0029] like Figures 1 to 5 As shown, a bracket 32 ​​is connected to the bottom of the workbench 1, and the first cylinder 3 is arranged on the bracket 32. The piston rod of the first cylinder 3 is connected to the bottom of the support plate 31. The bottom end of the tightening sleeve passes through the first through hole 21 and overlaps the support plate 31. The first cylinder 3 drives the lifting and lowering support plate 31. The tightening sleeve on the support plate 31 is lifted and lowered with the movement of the support plate 31, so that the tightening sleeve is lifted to the required installation height so as to be installed with the manipulator. A plurality of reinforcing ribs 34 are provided on the side of the bracket 32 ​​to enhance its structural strength.

[0030] like Figure 6 and Figure 7As shown, the limiting structure includes a stopper 23, which is located between the mounting grooves. A turntable 22 is provided in the middle of the base 2, and the stopper 23 is fixedly connected to the edge of the turntable 22. A second cylinder 4 is also provided on the workbench 1, and a piston rod of the second cylinder 4 is connected to a push block 41, and a connecting rod 44 is connected to the turntable 22 and the push block 41; a limiting groove 43 is provided on the connecting rod 44, and a limiting rod 42 is provided at the top of the push block 41, and the limiting rod 42 is located in the limiting groove 43. The second cylinder 4 drives the piston rod to extend and retract, and the piston rod drives the turntable 22 to rotate a certain angle through the push block 41 and the connecting rod 44, and the turntable 22 drives all the stoppers 23 to rotate a certain distance, and the stopper 23 will cover a certain range of the first through hole 21. When the tightening sleeve is located in the first through hole 21, the stopper 23 forms a clamping connection with the quick-connection ring of the tightening sleeve, restricting the axial movement of the tightening sleeve, and playing an axial limiting effect, so that the tightening sleeve can be easily separated from the robot. In order to ensure that the linear movement of the piston rod can drive the connecting rod 44 to rotate, the limit groove 43 is a waist-shaped structure, and the two are not fixedly connected. The limit rod 42 can move in the limit groove 43, thereby limiting the maximum rotation angle of the connecting rod 44, and the length of the limit groove 43 and the rotation angle of the connecting rod 44 are adapted to prevent the block 23 from rotating too much or too little.

[0031] like Figure 4 As shown, a substrate 6 is provided above the base 2, and a second through hole 61 is provided on the substrate 6, and the through hole corresponds to the first through hole 21 in the axial direction; a support shaft 28 is connected between the substrate 6 and the base 2, and the top of the support shaft 28 is a stepped structure. The substrate 6 and the through hole limit the tightening sleeve, which can ensure that the tightening sleeve is in a vertical posture. When the robot switches the sleeve, it can be quickly aligned with the tightening sleeve to reduce alignment errors and improve work efficiency. The top of the support shaft 28 adopts a stepped structure, so that the substrate 6 is overall horizontal after installation, ensuring that the second through hole 61 is accurately aligned with the first through hole 21 in the axial direction, and can reduce the use of connectors.

[0032] like Figure 4 and Figure 5 As shown, the first through hole 21 and the second through hole 61 are evenly distributed along the circumferential direction. The number of tightening sleeves is consistent with the number of bolts on the tire, and a corresponding number of through holes are set according to the number specifications of the tightening sleeves. The number of blocks 23 is consistent with the first through hole 21, and the number of blocks 23 is generally set to five.

[0033] like Figure 7As shown, a rotating shaft 26 is provided in the middle of the base 2, the rotating disk 22 is rotatably connected to the rotating shaft 26, a limiting flange 27 is provided at the top of the rotating shaft 26, a limiting block 45 is provided at the top of the limiting rod 42, the connecting rod 44 is arranged horizontally, and the bottom ends of the limiting flange 27 and the limiting block 45 are both in contact with the upper end surface of the connecting rod 44. The rotating disk 22 rotates around the rotating shaft 26 to drive the stopper 23 to rotate, and the limiting flange 27 and the limiting block 45 respectively play a vertical limiting role on both ends of the connecting rod 44, so that the connecting rod 44 will not fall out, ensuring the horizontal posture of the connecting rod 44 is stable, and then ensuring the rotation accuracy of the stopper 23.

[0034] like Figure 3 As shown, a guide shaft 33 is provided on the bracket 32, the top end of the guide shaft 33 is fixedly connected to the support plate 31, the bottom end of the guide shaft 33 extends from the bracket 32, and the guide shaft 33 is evenly distributed along the circumference. The above-mentioned multiple guide seats have a supporting and guiding function for the support plate 31, and are used to ensure the horizontal stability of the support plate 31.

[0035] like Figure 2 As shown, mounting brackets 5 are provided at both ends of the workbench 1. The mounting brackets 5 are higher than the base 2. A photoelectric detection switch 51 is provided on the top of the mounting bracket 5. The cross section of the mounting bracket 5 is a Z-shaped structure, and waist-shaped mounting holes 52 are evenly distributed on the mounting bracket 5. The mounting bracket 5 is located on both sides of the base 2, and the photoelectric detection switches 51 are staggered on the mounting bracket 5, that is, each photoelectric detection switch 51 corresponds to a tightening sleeve in the first through hole 21. In order to ensure that the detection area of ​​the photoelectric detection switch 51 is unobstructed, the top height of the mounting bracket 5 is designed to be higher than the height of the base 2. When the tightening sleeve is placed, the photoelectric detection switch 51 can detect the tightening sleeve and send a signal to the control system, and then the next operation can be carried out. The Z-shaped mounting bracket 5 ensures the installation accuracy of the photoelectric detection switch 51, and a plurality of waist-shaped mounting holes 52 are provided on the mounting bracket 5 to facilitate the adjustment of the position of the photoelectric detection switch 51 and improve versatility.

[0036] like Figure 7 As shown, an extension plate 24 is provided at the end of the turntable 22, and a stopper 23 is provided on the extension plate 24, and a bolt hole 25 is provided on the stopper 23. Two bolt holes 25 are provided on each stopper 23, and two bolts are used to fix the stopper 23 on the extension plate 24. The size of the extension plate 24 is consistent with that of the stopper 23. If the stopper 23 is damaged, it can also be quickly disassembled by bolts for maintenance and replacement, ensuring the normal use of the entire device.

[0037] like Figure 7As shown, a positioning bracket 46 is provided on the workbench 1, and the positioning bracket 46 is an L-shaped structure. The second cylinder 4 is fixed on the positioning bracket 46, and a waist-shaped positioning hole 47 is provided on the top of the positioning bracket 46. Since the second cylinder 4 is arranged in a horizontal posture, the positioning bracket 46 is designed to be L-shaped, which is conducive to ensuring that the second cylinder 4 has high installation accuracy, thereby ensuring the stable movement of the piston rod and the connecting rod 44, and the positioning hole at the bottom of the positioning bracket 46 is designed to be a waist-shaped hole, which is convenient for adjusting the installation position of the second cylinder 4.

[0038] The assembly tire tightening sleeve switching device is placed in parallel when in use. If two devices are set up, the two devices are used for storage and replacement of tightening sleeves respectively, so as to realize the sharing of manipulators, reduce the workstation area, and reduce the investment in production lines. The workflow is as follows: When the production line produces two different tires (that is, the tires are equipped with different fixing bolts). The vehicle sends the VIN code to the tire automatic station PLC control system 2 stations in advance through the skateboard conveyor line. The VIN code is analyzed by MES to determine the model and whether it needs to be replaced. The PLC sends the control command to the automatic station tightening robot. After receiving the command, the robot controls the gripper to run to the sleeve switching device to automatically replace the required sleeve. The robot realizes flexible production and co-production of different models by replacing different tightening sleeves.

[0039] When the robot stores the tightening sleeve, it first moves to the top of the device with the tightening sleeve. The control system allows the robot to rotate the sleeve and insert it into the two through holes. At the same time, the robot and the sleeve feedback torque. The photoelectric detection switch 51 detects that the tightening sleeve is in place and transmits the signal to the control system. The control system controls the first cylinder 3 to start and lift, and the second cylinder 4 starts to drive the block 23 to rotate so that the sleeve quick-connect ring is restricted axially. After the robot rotates and resets, the sleeve automatically falls off. When the robot takes the tightening sleeve, the robot moves to the top of another sleeve switching device, and the first cylinder 3 starts to lift the support plate 31. After the tightening sleeve is lifted, the sleeve is pressed against the robot, and the robot rotates to connect with the new sleeve. After the robot completes the sleeve switching, it can re-enter the tire tightening work.

[0040] The tire tightening sleeve switching device for final assembly realizes alignment installation with the robot by lifting and lowering the tightening sleeve by the first cylinder 3; and limits the tightening sleeve in the axial direction by rotating the stopper 23 by the second cylinder 4, so that the tightening sleeve can be separated from the robot conveniently; the device has reasonable structural design and high installation accuracy, which can ensure the stable posture of the tightening sleeve when taking and storing, ensure the accurate alignment of the robot, reduce operating errors and improve production efficiency. The device is used with the automatic distribution of the robot to realize the rapid switching of different tightening sleeves and the sharing of robots for the tightening processes of tire bolts of different models, so as to meet the tightening of fixing bolts of different tires, and is conducive to the co-production of tires of different models, improve the utilization efficiency of equipment, shorten the maintenance time, reduce the number of production line stations and the occupied area, and reduce the personnel, equipment and investment costs.

[0041] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A tire tightening sleeve switching device for final assembly, characterized in that: The invention comprises a workbench (1), wherein a base (2) is provided in the middle of the workbench (1), a first through hole (21) is provided on the base (2), and a limiting structure is provided on one side of the first through hole (21); a support plate (31) is provided below the workbench (1), and the support plate (31) is connected to a first cylinder (3).

2. The tire tightening sleeve switching device for final assembly according to claim 1, characterized in that: The bottom of the workbench (1) is connected to a bracket (32), the first cylinder (3) is arranged on the bracket (32), and the piston rod of the first cylinder (3) is connected to the bottom of the support plate (31).

3. The tire tightening sleeve switching device for final assembly according to claim 2, characterized in that: The limiting structure comprises a stopper (23), wherein the stopper (23) is located between the mounting grooves; a turntable (22) is provided in the middle of the base (2); the stopper (23) is fixedly connected to the edge of the turntable (22); a second cylinder (4) is also provided on the workbench (1); a piston rod of the second cylinder (4) is connected to a push block (41); the turntable (22) and the push block (41) are connected to a connecting rod (44); a limiting groove (43) is provided on the connecting rod (44); a limiting rod (42) is provided at the top end of the push block (41); and the limiting rod (42) is located in the limiting groove (43).

4. The tire tightening sleeve switching device for final assembly according to claim 3, characterized in that: A base plate (6) is provided above the base (2), and a second through hole (61) is provided on the base plate (6), and the through hole corresponds to the first through hole (21) in the axial direction; a support shaft (28) is connected between the base plate (6) and the base (2), and the top end of the support shaft (28) is a stepped structure.

5. The tire tightening sleeve switching device for final assembly according to claim 4, characterized in that: The first through holes (21) and the second through holes (61) are evenly distributed along the circumferential direction.

6. The tire tightening sleeve switching device for final assembly according to claim 3, characterized in that: A rotating shaft (26) is provided in the middle of the base (2), the rotating disk (22) is rotatably connected to the rotating shaft (26), a limiting flange (27) is provided at the top end of the rotating shaft (26), a limiting block (45) is provided at the top end of the limiting rod (42), the connecting rod (44) is horizontally arranged, and the bottom ends of the limiting flange (27) and the limiting block (45) are both in contact with the upper end surface of the connecting rod (44).

7. The tire tightening sleeve switching device for final assembly according to claim 2, characterized in that: The bracket (32) is provided with a guide shaft (33), the top end of the guide shaft (33) is fixedly connected to the support plate (31), the bottom end of the guide shaft (33) extends from the bracket (32), and the guide shaft (33) is evenly distributed along the circumferential direction.

8. The tire tightening sleeve switching device for final assembly according to any one of claims 1 to 7, characterized in that: Mounting brackets (5) are provided at both ends of the workbench (1); the mounting brackets (5) are higher than the base (2); a photoelectric detection switch (51) is provided on the top of the mounting bracket (5); the mounting bracket (5) has a Z-shaped cross-section, and waist-shaped mounting holes (52) are evenly distributed on the mounting bracket (5).

9. The tire tightening sleeve switching device for final assembly according to claim 3, characterized in that: An extension plate (24) is provided at the end of the rotating disk (22), the stopper (23) is arranged on the extension plate (24), and a bolt hole (25) is provided on the stopper (23).

10. The tire tightening sleeve switching device for final assembly according to claim 9, characterized in that: The workbench (1) is provided with a positioning bracket (46), the positioning bracket (46) is an L-shaped structure, the second cylinder (4) is fixed on the positioning bracket (46), and a waist-shaped positioning hole (47) is provided on the top of the positioning bracket (46).

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