A pluggable positioning device

Abstract

The present invention relates to a pluggable positioning device, comprising a gripper assembly, a plug assembly and a base assembly arranged in sequence from top to bottom; the gripper assembly comprises a gripper bracket, a plug-in frame, a locking cylinder, an expansion pin and an insertion rod, the output shaft of the locking cylinder faces downward and is respectively connected to the expansion pin and the insertion rod through the plug-in frame; the plug assembly comprises a plug bracket and a pin cylinder arranged on the plug bracket, the plug bracket is provided with a guide sleeve corresponding to the position of the insertion rod and an expansion sleeve matched with the expansion pin, the lower end of the expansion sleeve is provided with a ball head roller, and a core shaft is provided in the expansion sleeve; the base assembly comprises a base, a crossbeam and a cone pin, the base is provided with a guide hole corresponding to the position of the insertion rod and a positioning hole corresponding to the position of the expansion sleeve, the cone pin is arranged in the positioning hole, the lower part of the cone pin is sleeved with a spring, and the crossbeam passes through the cone pin, the positioning hole and the guide hole. Compared with the prior art, the present invention solves the problem of difficulty in replacing positioning points in mixed-line production, and has the advantages of simple structure, energy saving, and low cost.

Description

Technical Field

[0001] The invention relates to the technical field of automobile production lines, and in particular to a pluggable positioning device. Background Art

[0002] With the continuous introduction of new platform models by various OEMs, the flexibility requirements for welding workshops are also increasing. Among them, for the transmission system that is crucial in production, a device for quickly replacing positioning points is required. The existing solutions are complex in structure, high in cost, and applicable to few models. In addition, the air source of the pin cylinder on the plug of all manufacturers is currently introduced through the air pipe with a quick plug. During the grabbing and replacement process, the air pipe is easily scratched and dragged, causing accidents. Summary of the invention

[0003] The purpose of the present invention is to provide a pluggable positioning device in order to overcome the defect of the above-mentioned prior art that the positioning points are difficult to replace in mixed-line production.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] A pluggable positioning device comprises a gripper assembly, a plug assembly and a base assembly which are arranged in sequence from top to bottom; the gripper assembly comprises a gripper bracket, a plug-in frame, a locking cylinder, an expansion pin and an insertion rod, the locking cylinder is arranged on the gripper bracket, the output shaft of the locking cylinder faces downward and is respectively connected to the expansion pin and the insertion rod through the plug-in frame; the plug assembly comprises a plug bracket and a pin cylinder arranged on the plug bracket, the plug bracket is provided with a guide sleeve corresponding to the position of the insertion rod and an expansion sleeve cooperating with the expansion pin, the lower end of the expansion sleeve is provided with a ball head roller, and the expansion sleeve is provided with a core shaft; the base assembly comprises a base, a crossbeam and a tapered pin, the base is provided with a guide hole corresponding to the position of the insertion rod and a positioning hole corresponding to the position of the expansion sleeve, the tapered pin is arranged in the positioning hole, the lower part of the tapered pin is sleeved with a spring, the crossbeam passes through the tapered pin, the positioning hole and the guide hole, and has space for up and down movement in the base.

[0006] Preferably, the air source pipeline of the pin cylinder is arranged in the base.

[0007] Preferably, the gripper bracket includes a gripper arm and a rectangular frame arranged at the end of the gripper arm, the gripper arm is connected to the robot, the locking cylinder is arranged at the top of the rectangular frame, and the output shaft of the locking cylinder extends downward into the rectangular frame.

[0008] Preferably, two insertion rods are provided, and the rising pin is provided in the middle position between the two insertion rods.

[0009] Preferably, a boss is provided in the middle of the cone pin, the diameter of the boss is equal to the inner diameter of the positioning hole, the spring is provided below the boss, and the crossbeam passes through the cone pin via the boss.

[0010] Preferably, the base is provided with an arc positioning groove at the positioning hole, and the inner diameter of the arc positioning groove is greater than or equal to the outer diameter of the ball head roller.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] 1. Different plug components can be replaced according to the vehicle model. The device is theoretically suitable for various vehicle models, which solves the problem of difficult replacement of positioning points in mixed-line production. It also has the advantages of simple structure, energy saving, low cost, etc., and can replace expensive positioners.

[0013] 2. Through the coordinated design of the spring and the cone sleeve, the device has the function of automatic compensation for wear.

[0014] 3. This device hides the gas path of the pin cylinder in the base and achieves the gas diversion function by drilling holes, making the device work longer and more safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the device of the present invention;

[0016] Figure 2 It is a schematic diagram of the initial state of the present invention;

[0017] Figure 3 It is a schematic diagram of the grabbing process of the present invention;

[0018] Figure 4 It is a schematic diagram of the positioning process of the present invention;

[0019] Figure 5 It is a schematic diagram of the gripper returning process of the present invention;

[0020] Figure 6 It is a schematic diagram of the gas path structure of the pin cylinder of the present invention;

[0021] Figure 7 It is a schematic diagram of the unlocking process of the present invention.

[0022] Markings in the figure: 1. bottom plate, 2. base, 3. plug bracket, 4. guide sleeve, 5. linear bearing, 6. pin cylinder, 7. rectangular frame, 8. locking cylinder, 9. plug-in frame, 10. rising pin, 11. grab arm, 12. core shaft, 13. stop pin, 14. ball roller, 15. spring, 16. taper pin, 17. plug rod, 18. crossbeam, 19. rising sleeve. DETAILED DESCRIPTION

[0023] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0024] Example

[0025] like Figure 1 As shown, a pluggable positioning device includes a gripper assembly, a plug assembly and a base assembly arranged in sequence from top to bottom. The gripper assembly is used to grab the plug assembly so that the plug rod 17 can be inserted into or pulled out of the guide hole of the base 2, including a gripper bracket, a plug-in frame 9, a locking cylinder 8, an expansion pin 10 and a plug rod 17. The locking cylinder 8 is arranged on the gripper bracket, and the output shaft of the locking cylinder 8 faces downward and is respectively connected to the expansion pin 10 and the plug rod 17 through the plug-in frame 9. The plug rod 17 is connected to the plug-in frame 9 through a linear bearing 5. The plug assembly is customized according to the position change of the positioning point, including a plug bracket 3 and a pin cylinder 6 arranged on the plug bracket 3. The plug bracket 3 is provided with a guide sleeve 4 corresponding to the position of the plug rod 17 and an expansion sleeve 19 matched with the expansion pin 10. The lower end of the expansion sleeve 19 is provided with a ball head roller 14, and the expansion sleeve 19 is provided with a core shaft 12. The base assembly is used to fix the plug assembly, and includes a base 2, a crossbeam 18 and a tapered pin 16. The base 2 is provided with a guide hole corresponding to the position of the insertion rod 17 and a positioning hole corresponding to the position of the expansion sleeve 19. The tapered pin 16 is arranged in the positioning hole. The lower part of the tapered pin 16 is sleeved with a spring 15. The crossbeam 18 passes through the tapered pin 16, the positioning hole and the guide hole, and has space for up and down movement in the base 2.

[0026] Specifically, the gripper bracket includes a gripper arm 11 and a rectangular frame 7 arranged at the end of the gripper arm 11, the gripper arm 11 is connected to the robot, the locking cylinder 8 is arranged at the top of the rectangular frame 7, and the output shaft of the locking cylinder 8 extends downward into the rectangular frame 7. Two plug rods 17 are provided, extending downward from the gripper bracket, and the rising pin 10 is arranged in the middle of the two plug rods 17. An annular boss is provided in the middle of the cone pin 16, and the diameter of the boss is equal to the inner diameter of the positioning hole. The spring 15 is arranged below the boss, and the crossbeam 18 passes through the cone pin 16 via the boss. The base 2 is provided with an arc positioning groove at the positioning hole, and the inner diameter of the arc positioning groove is greater than or equal to the outer diameter of the ball roller 14.

[0027] The working principle of this device is:

[0028] 1. At the initial position, the plug assembly is in the storage area, the gripper assembly is in place, and there is no plug assembly on the base 2. Figure 2 shown.

[0029] 2. During the grabbing process, the robot drives the gripper bracket, and the two insertion rods 17 pass through the holes of the guide sleeve 4 of the plug assembly. The locking cylinder 8 is actuated to press the expansion pin 10 into the expansion sleeve 19 at one end of the core shaft 12 of the plug assembly. The expansion sleeve 19 expands and fixes the expansion pin 10 and the gripper assembly together and moves them from the storage area to the base 2. Figure 3 shown.

[0030] 3. During the positioning process, the robot continues to move, inserts the insertion rod 17 into the two guide holes of the base 2, and the insertion rod 17 continues to move downward, pressing the cone pin 16 through the crossbeam 18, unlocking the expansion pin 10 and the expansion sleeve 19, and continues to move downward. The other end of the core shaft 12 of the plug assembly is pressed into the positioning hole of the base 2, and the end surface of the base 2 plays a limiting role, such as Figure 4 shown.

[0031] 4. During the return process of the gripper, the bracket remains stationary, the locking cylinder 8 retracts, the rectangular frame 7 separates from the plug assembly, the gripper bracket moves upward, the spring 15 presses the cone pin 16 into the cone hole of the mandrel 12, and the ball roller 14 in the mandrel 12 is pushed toward the arc positioning groove of the base 2 to complete the locking. The gripper bracket continues to move upward and returns to its original position. Figure 5 shown.

[0032] When the ball roller 14 is pushed into the arc positioning groove on the base 2, the 1:50 taper pin 16 is tightly matched with the other end of the ball head. If you want to pull out the plug assembly at this time, you must have a force to move the taper pin 16 downward, but the unique 1:50 taper design makes this force very small and cannot overcome the upward force of the spring 15, thus completing the self-locking function.

[0033] If you want to pull out the plug assembly and replace other plugs, you still use the above steps, including: the gripper bracket is downward, the plug rod 17 is inserted into the guide hole until the plug bracket 3 contacts the gripper arm 11; the cylinder is actuated, the plug rod 17 continues to move downward, unlocking the core shaft 12 and the cone pin 16, and the core shaft 12 is inserted into the expansion sleeve 19 to lock the two components; the gripper bracket moves upward, takes away the plug assembly, and puts it into the storage area, such as Figure 7 As shown. Due to the matching design of the spring 15 and the cone sleeve, the device has the function of automatic wear compensation. The ball head roller 14 acts at the same time, so that the device has the function of self-centering.

[0034] like Figure 6 As shown, the pin cylinder 6 of the device is connected to the gas source in a concealed manner, the gas source pipeline is arranged in the base 2, and the gas diversion function is achieved by drilling holes, so that the device can work longer and be safer and more reliable.

Claims

1. A pluggable positioning device, characterized in that: It includes a gripper assembly, a plug assembly and a base assembly which are arranged in sequence from top to bottom; the gripper assembly includes a gripper bracket, a plug-in frame, a locking cylinder, an expansion pin and an insertion rod, the locking cylinder is arranged on the gripper bracket, the output shaft of the locking cylinder faces downward and is respectively connected to the expansion pin and the insertion rod through the plug-in frame; the plug assembly includes a plug bracket and a pin cylinder arranged on the plug bracket, the plug bracket is provided with a guide sleeve corresponding to the position of the insertion rod and an expansion sleeve cooperating with the expansion pin, the lower end of the expansion sleeve is provided with a ball head roller, and the expansion sleeve is provided with a core shaft; the base assembly includes a base, a crossbeam and a tapered pin, the base is provided with a guide hole corresponding to the position of the insertion rod and a positioning hole corresponding to the position of the expansion sleeve, the tapered pin is arranged in the positioning hole, the lower part of the tapered pin is sleeved with a spring, the crossbeam passes through the tapered pin, the positioning hole and the guide hole, and has space for up and down movement in the base.

2. A pluggable positioning device according to claim 1, characterized in that: The air source pipeline of the pin cylinder is arranged in the base.

3. The pluggable positioning device according to claim 1, characterized in that: The gripper bracket includes a gripper arm and a rectangular frame arranged at the end of the gripper arm, the gripper arm is connected to the robot, the locking cylinder is arranged at the top of the rectangular frame, and the output shaft of the locking cylinder extends downward into the rectangular frame.

4. The pluggable positioning device according to claim 1, characterized in that: The insert rods are provided with two, and the rising pin is arranged in the middle position of the two insert rods.

5. The pluggable positioning device according to claim 1, characterized in that: A boss is provided in the middle of the cone pin, the diameter of the boss is equal to the inner diameter of the positioning hole, the spring is arranged below the boss, and the crossbeam passes through the cone pin via the boss.

6. The pluggable positioning device according to claim 1, characterized in that: The base is provided with an arc positioning groove at the positioning hole, and the inner diameter of the arc positioning groove is greater than or equal to the outer diameter of the ball head roller.

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