Wheel airtight rubber ring press-fitting device

Disclosed is a wheel airtight rubber ring press-fitting device, consisting of a frame, first servo motors, ball screw pairs, first guide rails, a first cylinder and the like. The device may be used for automatic continuous production. The central axis of an airtight rubber ring coincides with the central axis of the outer rim of a wheel, so that the positioning precision is improved, and high-precision press-fitting is realized. Through cyclic switching of double manipulators, the press-fitting feeding time is nested, the press-fitting cycle is shortened, and the working efficiency is improved.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese Patent Application No. 201810157080.X filed on Feb. 24, 2018, which is hereby incorporated by reference in its entirety.

TECHNICAL FIELD

The present application relates to the technical field of installation of wheel airtight rubber rings, specifically to a device for press-fitting an airtight sealing rubber ring onto a wheel.

BACKGROUND ART

During airtight detection of a wheel, a lid-shaped airtight rubber disc is needed to cover the outer rim of the wheel, and the circumference and the bottom of the wheel are sealed, so that the outer rim of the wheel forms a closed cavity and the pressure leakage is detected. When the front rim of the wheel is continuous without disconnection, the front rim of the wheel can be sealed by the lid-shaped airtight rubber disc. However, discontinuous rims are becoming more and more popular. Some rims still have height differences of about 2-5 mm. At this time, the rim cannot be sealed directly using the lid-shaped airtight rubber disc, but an airtight rubber ring is press-fitted on the rim to seal the rim and then the airtight detection is performed. When the rubber ring is press-fitted manually, the efficiency and the precision are low, and the deflection phenomenon occurs easily.

SUMMARY OF THE INVENTION

The object of the present application is to provide a device for press-fitting an airtight rubber ring onto a wheel with high precision, which can be used for automatic continuous production. The device is advanced in process, novel in structure, accurate and efficient.

A wheel airtight rubber ring press-fitting device consists of a frame, first servo motors, ball screw pairs, first guide rails, a first cylinder, a left sliding plate, a gear rack, a right sliding plate, rough positioning wheels, lifting plates, second cylinders, second guide rails, sliding blocks, precision positioning wheels, airtight rubber rings, first guide posts, a pressure plate, a first lifting platform, third cylinders, fourth cylinders, second guide posts, a second servo motor, a second lifting platform, a rotating table, a first manipulator, a second manipulator, fifth cylinders, third guide posts and a third lifting platform. These parts constitute a wheel positioning unit, a rubber ring placement unit, a rubber ring supply unit and a rubber ring press-fitting unit.

The wheel positioning unit completes rough positioning and precision positioning of a wheel, the rubber ring placement unit completes rubber ring station switching placement, the rubber ring supply unit completes automatic feeding of the rubber rings, and the rubber ring press-fitting unit completes press-fitting of the rubber rings.

The two first guide rails are fixed on a support plate, the left sliding plate and the right sliding plate are mounted on the first guide rails and connected through the gear rack, and two rough positioning wheels9are mounted on the left sliding plate and the other two rough positioning wheels9are mounted on the right sliding plate. When the first cylinder drives the left sliding plate to move, the right sliding plate moves synchronously under the action of the gear rack, and the wheel might be roughly positioned by the four rough positioning wheels. A first servo motor is fixedly mounted on the left side of the frame, the output end of the first servo motor is connected with a ball screw pair, the first servo motor controls the up-and-down movement of a lifting plate under the guidance of a guide rail, a second cylinder is fixed on the lifting plate, the output end of the second cylinder is connected to a sliding block to control the horizontal movement of the sliding block under the guidance of the second guide rail, and two precision positioning wheels are mounted at the front end of the sliding block and used for precisely positioning an outer bead seat. The right side of the frame is arranged in the same manner as the left side, and two precision positioning wheels are symmetrically distributed. After the wheel is roughly positioned, the rough positioning wheels are retracted and reset, and the second cylinders on the left and right sides are simultaneously started to drive the four precision positioning wheels to contact the outer bead seat of the wheel so as to realize precision positioning. The heights of the precision positioning wheels can be adjusted through the first servo motors, so that this device can be used for press-fitting rubber rings onto wheels with different heights and is stronger in versatility. The turning process of the aluminum wheel is completed in two times. The inner rim is turned by first turning, and the outer rim is turned by second turning. Therefore, the inner rim and the outer rim have a coaxial deviation. For the assembly line operation, the inner rim is roughly positioned first, then the outer rim is precisely positioned, and the central axis of the press-fitted airtight rubber ring coincides with the center axis of the outer rim of the wheel, thereby greatly improving the positioning precision and eliminating the risk of press-fitting deflection of the rubber ring. This is the wheel positioning unit.

The output ends of the fourth cylinders are connected to the second lifting platform, and the fourth cylinders control the up-and-down movement of the second lifting platform under the guidance of the second guide posts. The second servo motor is fixed on the second lifting platform, and the output end of the second servo motor is connected to the rotating table. The first manipulator and the second manipulator are bilaterally symmetrically mounted on the rotating table. During working, the first manipulator on the left side is used for placing an airtight rubber ring, the second manipulator on the right side is used for loading next airtight rubber ring, and the left and right positions of the first manipulator and the second manipulator can be cyclically switched through the second servo motor. The output ends of the fifth cylinders are connected to the third lifting platform, the fifth cylinders control the up-and-down movement of the third lifting platform under the guidance of the third guide posts, and the airtight rubber rings are vertically stacked on the third lifting platform. In the initial state, the first manipulator on the left side is loaded with an airtight rubber ring, and the second manipulator on the right side is unloaded. After the wheel is precisely positioned, the fourth cylinders drive the second lifting platform to descend, so that the airtight rubber ring contacts the front side of the wheel. Then, the first manipulator is opened to release the airtight rubber ring. Next, the fourth cylinders drive the second lifting platform to descend again a certain distance to reserve a space for press-fitting. The fifth cylinders drive the third lifting platform to ascend a certain distance during press-fitting so that the airtight rubber ring stacked at the top rises to an appropriate height clamped by the second manipulator, and then the second manipulator clamps the top airtight rubber ring. These are the airtight rubber ring placement and supply units.

The third cylinders are mounted at the top of the frame, the third cylinders control the up-and-down movement of the first lifting platform under the guidance of the first guide posts, and the pressure plate is fixed on the first lifting platform. After the wheel is precisely positioned and the airtight rubber ring is placed on the front side of the wheel, the third cylinders are started, the pressure plate is driven to descend, and the airtight rubber ring is pressed into the outer rim of the wheel. This is the airtight rubber ring press-fitting unit.

The working process of the wheel airtight rubber ring press-fitting device is: first, the heights of the precision positioning wheels are adjusted through the first servo motors according to a wheel produced on line. The first cylinder drives the left sliding plate to move, the right sliding plate moves synchronously under the action of the gear rack, the wheel is roughly positioned through the four rough positioning wheels, and then the rough positioning wheels are retracted and reset. Next, the second cylinders on the left and right sides are started simultaneously to drive the four precision positioning wheels to contact the outer bead seat of the wheel to precisely position the wheel. In the initial state, the first manipulator on the left side is loaded with a airtight rubber rings, and the second manipulator on the right side is unloaded. After the wheel is precisely positioned, the fourth cylinders drive the second lifting platform to descend, so that the airtight rubber ring contacts the front side of the wheel. Then, the first manipulator is opened to release the airtight rubber ring. Next, the fourth cylinders drive the second lifting platform to descend again a certain distance to reserve a space for press-fitting. The third cylinders then drive the pressure plate to descend to press the airtight rubber ring into the outer rim of the wheel, the fifth cylinders drive the third lifting platform to ascend a certain distance during press-fitting so that the airtight rubber ring stacked at the top rises to an appropriate height clamped by the arm of second manipulator, and then the second manipulator clamps the top airtight rubber ring. After the first wheel is press-fitted, the precision positioning wheels are retracted and reset, the pressure plate ascends and resets, then the fourth cylinders drive the second lifting platform to ascend and reset, the second servo motor is started to drive the rotating table to rotate 180 degrees, the airtight rubber ring clamped by the second manipulator is switched to the left side, the first manipulator is switched to the right side and is unloaded, so far, the device completes a cycle and restores to the initial state to wait for the next wheel positioning followed by press-fitting, and so on.

The present application might be used for automatic continuous production. Through a reasonable process layout, the central axis of the airtight rubber ring coincides with the central axis of the outer rim of the wheel, so that the positioning precision is improved, and high-precision press-fitting is realized. Through cyclic switching of the double manipulators, the press-fitting feeding time is nested, the press-fitting cycle is shortened, and the working efficiency is improved.

DETAILED DESCRIPTION OF THE INVENTION

The details and working conditions of the specific device proposed by the present application will be described below in combination with the accompanying drawings.

A wheel airtight rubber ring press-fitting device consists of a frame1, first servo motors2, ball screw pairs3, first guide rails4, a first cylinder5, a left sliding plate6, a gear rack7, a right sliding plate8, rough positioning wheels9, lifting plates10, second cylinders11, second guide rails12, sliding blocks13, precision positioning wheels14, airtight rubber rings15, first guide posts16, a pressure plate17, a first lifting platform18, third cylinders19, fourth cylinders20, second guide posts21, a second servo motor22, a second lifting platform23, a rotating table24, a first manipulator25, a second manipulator26, fifth cylinders27, third guide posts28and a third lifting platform29. These parts constitute a wheel positioning unit, a rubber ring placement unit, a rubber ring supply unit and a rubber ring press-fitting unit.

The wheel positioning unit completes rough positioning and precision positioning of a wheel, the rubber ring placement unit completes rubber ring station switching placement, the rubber ring supply unit completes automatic feeding of the rubber rings, and the rubber ring press-fitting unit completes press-fitting of the rubber rings.

The two first guide rails4are fixed on a support plate, the left sliding plate6and the right sliding plate8are mounted on the first guide rails4and connected through the gear rack7, and two rough positioning wheels9are mounted on the left sliding plate6and the other two rough positioning wheels9are mounted on the right sliding plate8. When the first cylinder5drives the left sliding plate6to move, the right sliding plate8moves synchronously under the action of the gear rack7, and the wheel can be roughly positioned by the four rough positioning wheels9. A first servo motor2is fixedly mounted on the left side of the frame1, the output end of the first servo motor2is connected with a ball screw pair3, the first servo motor2controls the up-and-down movement of a lifting plate10under the guidance of a guide rail, a second cylinder11is fixed on the lifting plate10, the output end of the second cylinder11is connected to a sliding block13to control the horizontal movement of the sliding block13under the guidance of the second guide rail12, and two precision positioning wheels14are mounted at the front end of the sliding block13and used for precisely positioning an outer bead seat31. The right side of the frame1is arranged in the same manner as the left side, and two precision positioning wheels14are symmetrically distributed. After the wheel is roughly positioned, the rough positioning wheels9are retracted and reset, and the second cylinders11on the left and right sides are simultaneously started to drive the four precision positioning wheels14to contact the outer bead seat of the wheel so as to realize precision positioning. The heights of the precision positioning wheels14can be adjusted through the first servo motors2, so that this device can be used for press-fitting rubber rings onto wheels with different heights and is stronger in versatility. The turning process of the aluminum wheel is completed in two times. The inner rim is turned by first turning, and the outer rim is turned by second turning. Therefore, the inner rim and the outer rim have a coaxial deviation. For the assembly line operation, the inner rim is roughly positioned first, then the outer rim is precisely positioned, and the central axis of the press-fitted airtight rubber ring coincides with the center axis of the outer rim of the wheel30, thereby greatly improving the positioning precision and eliminating the risk of press-fitting deflection of the rubber ring. This is the wheel positioning unit.

The output ends of the fourth cylinders20are connected to the second lifting platform23, and the fourth cylinders20control the up-and-down movement of the second lifting platform23under the guidance of the second guide posts21. The second servo motor22is fixed on the second lifting platform23, and the output end of the second servo motor22is connected to the rotating table24. The first manipulator25and the second manipulator26are bilaterally symmetrically mounted on the rotating table24. During working, the first manipulator25on the left side is used for placing an airtight rubber ring15, the second manipulator26on the right side is used for loading next airtight rubber ring15, and the left and right positions of the first manipulator25and the second manipulator26can be cyclically switched through the second servo motor22. The output ends of the fifth cylinders27are connected to the third lifting platform29, the fifth cylinders27control the up-and-down movement of the third lifting platform29under the guidance of the third guide posts28, and the airtight rubber rings15are vertically stacked on the third lifting platform29. In the initial state, the first manipulator25on the left side is loaded with an airtight rubber ring15, and the second manipulator26on the right side is unloaded. After the wheel is precisely positioned, the fourth cylinders20drive the second lifting platform23to descend, so that the airtight rubber ring15contacts the front side of the wheel. Then, the first manipulator25is opened to release the airtight rubber ring15. Next, the fourth cylinders20drive the second lifting platform23to descend again a certain distance to reserve a space for press-fitting. The fifth cylinders27drives the third lifting platform29to ascend a certain distance during press-fitting so that the airtight rubber ring15stacked at the top rises to an appropriate height clamped by the second manipulator26, and then the second manipulator26clamps the top airtight rubber ring15. These are the airtight rubber ring placement and supply units.

The third cylinders19are mounted at the top of the frame, the third cylinders19control the up-and-down movement of the first lifting platform18under the guidance of the first guide posts16, and the pressure plate17is fixed on the first lifting platform18. After the wheel is precisely positioned and the airtight rubber ring15is placed on the front side of the wheel, the third cylinders19are started, the pressure plate17is driven to descend, and the airtight rubber ring15is pressed into the outer rim of the wheel. This is the airtight rubber ring press-fitting unit.

The working process of the wheel airtight rubber ring press-fitting device is: first, the heights of the precision positioning wheels14are adjusted through the first servo motors2according to a wheel produced on line. The first cylinder5drives the left sliding plate6to move, the right sliding plate8moves synchronously under the action of the gear rack7, the wheel is roughly positioned through the four rough positioning wheels9, and then the rough positioning wheels9are retracted and reset. Next, the second cylinders11on the left and right sides are started simultaneously to drive the four precision positioning wheels14to contact the outer bead seat of the wheel to precisely position the wheel. In the initial state, the first manipulator25on the left side is loaded with a airtight rubber ring15, and the second manipulator26on the right side is unloaded. After the wheel is precisely positioned, the fourth cylinders20drive the second lifting platform23to descend, so that the airtight rubber ring15contacts the front side of the wheel. Then, the first manipulator25is opened to release the airtight rubber ring15. Next, the fourth cylinders20drive the second lifting platform23to descend again a certain distance to reserve a space for press-fitting. The third cylinders19then drive the pressure plate17to descend to press the airtight rubber ring15into the outer rim of the wheel, the fifth cylinders27drive the third lifting platform29to ascend a certain distance during press-fitting so that the airtight rubber ring15stacked at the top rises to an appropriate height clamped by the arm of second manipulator26, and then the second manipulator26clamps the top airtight rubber ring15. After the first wheel is press-fitted, the precision positioning wheels14are retracted and reset, the pressure plate17ascends and resets, then the fourth cylinders20drive the second lifting platform23to ascend and reset, the second servo motor22is started to drive the rotating table24to rotate 180 degrees, the airtight rubber ring15clamped by the second manipulator26is switched to the left side, the first manipulator25is switched to the right side and is unloaded, so far, the device completes a cycle and restores to the initial state to wait for the next wheel positioning followed by press-fitting, and so on.

The present application can be used for automatic continuous production. Through a reasonable process layout, the central axis of the airtight rubber ring coincides with the central axis of the outer rim of the wheel, so that the positioning precision is improved, and high-precision press-fitting is realized. Through cyclic switching of the double manipulators, the press-fitting feeding time is nested, the press-fitting cycle is shortened, and the working efficiency is improved.