A quick-change device with locking and automatic release functions

Abstract

The present invention relates to the field of robot processing equipment technology, and in particular to a quick-change device with locking and automatic release functions, which includes a main connection disk, a plurality of auxiliary connection disks and a piston rod, a piston rod guide sleeve is provided in the middle of the main connection disk, a plurality of locking marbles clearance holes and a plurality of loosening marbles clearance holes are staggered on the piston rod guide sleeve, a locking marble is provided at the locking marble clearance hole, a loosening marble is provided at the loosening marble clearance hole, the piston rod is a conical surface at a position corresponding to the locking marble, a piston rod arc groove is provided at a position corresponding to the loosening marble, the inner wall of each auxiliary connection disk guide sleeve clearance hole is provided with a plurality of locking grooves and a plurality of loosening grooves, the rear end of the locking groove is an arc step, and the front of the loosening groove is a conical surface. The device provided by the present invention has a simple structure, can realize both automatic locking function and automatic loosening function, and ensure the safe operation of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of robot automation equipment, and in particular to a quick-change device with locking and automatic releasing functions. Background Art

[0002] In the field of robot automation, different end effectors or peripheral devices need to be automatically replaced by robots. Generally, the main connection disk is connected to the robot arm through a quick-change device, and the auxiliary connection disk is installed on the corresponding workstation. The robot arm drives the main connection disk to move and connect with the auxiliary connection disks on multiple workstations to achieve the connection and disconnection of gas, liquid and other media or electrical signals and communication signals at the corresponding workstations. The traditional quick-change device only has a locking function between the main connection disk and the auxiliary connection disk, but does not have an automatic release function. It cannot guarantee that the quick-change device can perform other actions in a safe state of release, and its working reliability cannot be guaranteed. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a quick-change device with locking and automatic releasing functions which has a simple structure and can realize both automatic locking and automatic releasing functions to ensure the safe operation of equipment.

[0004] The present invention is achieved through the following technical solutions:

[0005] A quick-change device with locking and automatic release functions, comprising a main connecting disk, a plurality of auxiliary connecting disks and a piston rod, wherein a rear cover plate is fixedly installed at the end of the main connecting disk, a piston rod guide sleeve is provided in the middle of the main connecting disk and the front part protrudes from the main connecting disk, a spring extending into the piston rod guide sleeve is fixedly installed on the rear cover plate, the piston rod is installed in the piston rod guide sleeve and abuts against the spring, a plurality of locking marble clearance holes and a plurality of loosening marble clearance holes are staggered on the piston rod guide sleeve, and a locking marble is movably provided at each of the locking marble clearance holes A loosening ball is movably arranged at each of the loosening ball clearance holes, the piston rod is a conical surface at the position corresponding to the locking ball, and an inward piston rod arc groove is provided at the position corresponding to the loosening ball. Each of the auxiliary connecting plates is provided with a guide sleeve clearance hole at the position corresponding to the piston rod guide sleeve, and the inner wall of the guide sleeve clearance hole is provided with a plurality of locking grooves corresponding to the locking ball from front to back, and the inner wall of the guide sleeve clearance hole is provided with a plurality of loosening grooves corresponding to the loosening ball from back to front, the rear end of the locking groove is an arc step, and the front part of the loosening groove is a conical surface.

[0006] Optimized, there are three both the locking marble-locking hole and the releasing marble-locking hole.

[0007] Furthermore, a spring clearance groove is provided at the rear of the piston rod, and the spring is clamped in the spring clearance groove.

[0008] Furthermore, a plurality of positioning pins are fixedly provided on the outer edge of the main connecting plate, and the auxiliary connecting plate is provided with guide positioning holes at positions corresponding to the positioning pins.

[0009] Furthermore, a first sealing groove is provided at the rear of the piston rod, and a first sealing ring is installed at the first sealing groove.

[0010] Furthermore, a second sealing groove is provided in the middle of the piston rod, and a second sealing ring is installed in the second sealing groove.

[0011] Furthermore, a third sealing groove is provided at the rear end of the main connecting disk, and a third sealing ring is installed at the third sealing groove.

[0012] Optimized, a magnetic ring installation groove is provided at the lower part of the piston rod, a magnetic ring is installed in the magnetic ring installation groove, and a front limit position sensor and a rear limit position sensor are fixedly installed on the inner wall of the piston rod guide sleeve.

[0013] Beneficial effects of the present invention

[0014] The quick-change device with locking and automatic releasing functions provided by the present invention has the following advantages:

[0015] 1. Simple structure, easy to manufacture and install, and low operating cost.

[0016] 2. Small footprint.

[0017] 3. It can realize the rapid conversion of power supply, communication and gas or water source of multiple stations to improve processing efficiency.

[0018] 4. It can realize both automatic locking and automatic releasing functions to ensure the safe operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the top view structure of the present invention;

[0020] Figure 2 It is a cross-sectional view of the top view of the structure of the present invention along the line MM;

[0021] In the figure, 1. rear cover plate, 2. piston rod guide sleeve, 3. spring clearance groove, 4. positioning pin, 5. guide positioning hole, 6. auxiliary connecting plate, 7. locking marble, 8. guide sleeve clearance hole, 9. locking marble clearance hole, 10. piston rod, 11. release marble clearance hole, 12. release marble, 13. second sealing ring, 14. first sealing ring, 15. magnetic ring, 16. main connecting plate, 17. third sealing ring, 18. spring, 19. locking groove, 20. piston rod arc groove, 21. arc step, 22. release groove. DETAILED DESCRIPTION

[0022] A quick-change device with locking and automatic release functions, comprising a main connecting disk 16, a plurality of auxiliary connecting disks 6 and a piston rod 10, wherein a rear cover plate 1 is fixedly mounted on the end of the main connecting disk, a piston rod guide sleeve 2 is provided in the middle of the main connecting disk, and the front portion of the piston rod guide sleeve protrudes out of the main connecting disk, a spring 18 extending into the piston rod guide sleeve is fixedly mounted on the rear cover plate, the piston rod is installed in the piston rod guide sleeve and abuts against the spring, a plurality of locking marble clearance holes 9 and a plurality of release marble clearance holes 11 are staggeredly arranged on the piston rod guide sleeve, a locking marble 7 is movably arranged at each of the locking marble clearance holes, and a release marble 12 is movably arranged at each of the release marble clearance holes, the piston rod is a conical surface at the position corresponding to the locking marble, and an inward piston rod arc groove 20 is provided at the position corresponding to the release marble.

[0023] The setting of the arc-shaped groove of the piston rod enables the loosening ball to lie in the arc-shaped groove of the piston rod when the piston rod is in a locked state, without affecting the locking of the locking ball. When the piston rod moves downward, the loosening ball can be squeezed out of the arc-shaped groove of the piston rod and reset to cooperate with the conical surface of the loosening groove, so that the main connecting plate is automatically in a loosened state.

[0024] Each of the auxiliary connecting plates is provided with a guide sleeve clearance hole 8 at a position corresponding to the piston rod guide sleeve. The inner wall of the guide sleeve clearance hole is provided with a plurality of locking grooves 19 corresponding to the locking marbles from front to back, and the inner wall of the guide sleeve clearance hole is provided with a plurality of loosening grooves 22 corresponding to the loosening marbles from back to front. The rear end of the locking groove is an arc-shaped step 21.

[0025] The setting of the piston rod conical surface cooperates with the locking groove, and the rear end of the locking groove is an arc-shaped step, so that after the piston rod runs into place, the locking marble is automatically located at the arc-shaped step, and the main connecting disk and the auxiliary connecting disk are locked to prevent the main connecting disk and the auxiliary connection from loosening during the connection process. The operation is stable and reliable, and no additional components are required. The main connecting disk and the auxiliary connecting disk can be automatically locked and loosened only by the cooperation of the piston rod and the auxiliary connecting disk. The structure is simple and the cost is low.

[0026] Optimized, there are three holes for both locking and releasing the marbles, which can simplify the structure as much as possible and ensure good locking and automatic release effects.

[0027] Furthermore, a spring clearance groove 3 is provided at the rear of the piston rod, and the spring is clamped in the spring clearance groove. The setting of the spring enables the piston rod to be pushed forward by the spring restoring force when there is no air pressure, thereby ensuring that the quick-change main disc and sub-disc can still be locked when there is no air source, and will not fall off under certain force conditions. The structure is simple, the assembly is convenient, and the operation is relatively stable and reliable.

[0028] Furthermore, a plurality of positioning pins 4 are fixedly arranged on the outer edge of the main connection disk, and a guide positioning hole 5 is arranged at a position corresponding to the positioning pins on the auxiliary connection disk, so that the cooperation between the main connection disk and the auxiliary connection disk is more stable and reliable, and stable operation is achieved.

[0029] Furthermore, a first sealing groove is provided at the rear of the piston rod, and a first sealing ring 14 is installed at the first sealing groove, which can achieve reliable sealing between the piston rod and the rear of the inner wall of the piston rod guide sleeve.

[0030] Furthermore, a second sealing groove is provided in the middle of the piston rod, and a second sealing ring 13 is installed in the second sealing groove, which can achieve reliable sealing between the piston rod and the middle of the inner wall of the piston rod guide sleeve.

[0031] Furthermore, a third sealing groove is provided at the rear end of the main connecting disk, and a third sealing ring 17 is installed at the third sealing groove, so as to realize reliable sealing between the main connecting disk and the rear cover plate.

[0032] Optimized, a magnetic ring installation groove is provided at the lower part of the piston rod, a magnetic ring 15 is installed at the magnetic ring installation groove, a front limit position sensor (not shown) and a rear limit position sensor (not shown) are fixedly installed on the inner wall of the piston rod guide sleeve, when the magnetic ring runs to the front limit position sensor or the rear limit position sensor, the front limit position sensor or the rear limit position sensor will sense and transmit the information to the controller, and the controller instructs the robot to perform the next action.

[0033] The present invention provides a quick-change device with locking and automatic release functions, which is provided with multiple sets of auxiliary connection disks and one set of main connection disks. By moving the main connection disk, one set of main connection disk systems can be quickly switched between multiple sets of auxiliary connection disk systems, and the main connection disk and the auxiliary connection disk are respectively provided with corresponding circuit connection systems, communication systems and water or gas systems. When the main connection disk is connected with the corresponding auxiliary connection disk, the connection between the main connection disk and the corresponding auxiliary connection disk circuit system, communication system and water or gas system can be realized, which is convenient for faster and better replacement of the clamps at the end of the robot, such as grippers, cylinders, etc., and realizes the disconnection and connection of gas, electricity and water. Not only is the structure simple and the floor space is small, but also the production cost of the enterprise is reduced and the production efficiency is improved. The circuit connection system, communication system and water or gas system are prior art, so they are not shown in the figure.

[0034] When the main connecting disk moves to a position opposite to the corresponding auxiliary connecting disk and contacts with the auxiliary connecting disk, the piston rod guide sleeve of the main connecting disk extends into the guide sleeve clearance hole of the auxiliary connecting disk, and the piston rod is driven by air pressure and moves along the piston rod to the end of the piston rod guide sleeve. Since the piston rod is a conical surface at the position corresponding to the locking marble, as the piston rod moves, the piston rod gradually squeezes the locking marble out of the locking marble clearance hole until it reaches the locking groove of the guide sleeve clearance hole, and the piston rod stops running, making the main connecting disk unable to move backward, thereby realizing the locking of the main connecting disk and the auxiliary connecting disk, so that the main connecting disk and the auxiliary connecting disk are reliably connected and run stably. At this time, the released marble is just located in the arc groove of the piston rod.

[0035] When the main connecting disk and the auxiliary connecting disk need to be loosened, the piston rod retracts under the action of pressure. Due to the action of the conical surface of the piston rod, the locking ball is gradually reset to the locking ball yield hole, and the locking ball and the auxiliary disk are not in contact. Since the front part of the release groove is a conical surface, the release ball is pushed by the piston rod to leave the arc-shaped groove of the piston rod and move toward the release groove until the release ball moves to the conical surface of the release groove and lifts up the auxiliary connecting disk, thereby ensuring that the main connecting disk and the auxiliary connecting disk are completely loosened, ensuring that other operations can be performed in the loosened state, and enhancing the safety performance of the system.

[0036] In summary, the quick-change device with locking and automatic releasing functions provided by the present invention has a simple structure and can realize both automatic locking and automatic releasing functions, thereby ensuring safe operation of the equipment.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A quick-change device with locking and automatic release functions, characterized in that: The invention comprises a main connecting disk, a plurality of auxiliary connecting disks and a piston rod, wherein a rear cover plate is fixedly installed at the end of the main connecting disk, a piston rod guide sleeve is provided in the middle of the main connecting disk and the front part protrudes from the main connecting disk, a spring extending into the piston rod guide sleeve is fixedly installed on the rear cover plate, the piston rod is installed in the piston rod guide sleeve and abuts against the spring, a plurality of locking marbles giving way holes and a plurality of loosening marbles giving way holes are staggeredly arranged on the piston rod guide sleeve, each of the locking marbles giving way holes is movably provided with a locking marble, and each of the loosening marbles giving way holes is staggeredly arranged with a locking marble. A release ball is movably arranged at the position hole, the piston rod is a conical surface at the position corresponding to the locking ball, and an inward piston rod arc groove is provided at the position corresponding to the release ball. Each of the auxiliary connecting plates is provided with a guide sleeve clearance hole at the position corresponding to the piston rod guide sleeve, and the inner wall of the guide sleeve clearance hole is provided with a plurality of locking grooves corresponding to the locking ball from front to back, and the inner wall of the guide sleeve clearance hole is provided with a plurality of release grooves corresponding to the release ball from back to front, the rear end of the locking groove is an arc step, and the front part of the release groove is a conical surface.

2. A quick-change device with locking and automatic release functions according to claim 1, characterized in that: There are three locking marble holes and three releasing marble holes.

3. A quick-change device with locking and automatic release functions according to claim 1, characterized in that: A spring clearance groove is arranged at the rear of the piston rod, and the spring is clamped in the spring clearance groove.

4. A quick-change device with locking and automatic release functions according to claim 1, characterized in that: A plurality of positioning pins are fixedly arranged on the outer edge of the main connecting plate, and a guide positioning hole is arranged at a position corresponding to the positioning pins on the auxiliary connecting plate.

5. The quick-change device with locking and automatic release functions according to claim 1, characterized in that: A first sealing groove is arranged at the rear of the piston rod, and a first sealing ring is installed at the first sealing groove.

6. A quick-change device with locking and automatic release functions according to claim 1, characterized in that: A second sealing groove is arranged in the middle of the piston rod, and a second sealing ring is installed in the second sealing groove.

7. A quick-change device with locking and automatic release functions according to claim 1, characterized in that: A third sealing groove is arranged at the rear end of the main connecting disk, and a third sealing ring is installed at the third sealing groove.

8. The quick-change device with locking and automatic release functions according to claim 1, characterized in that: A magnetic ring installation groove is arranged at the lower part of the piston rod, a magnetic ring is installed at the magnetic ring installation groove, and a front limit position sensor and a rear limit position sensor are fixedly installed on the inner wall of the piston rod guide sleeve.

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