Stable universal rotary joint

Abstract

The utility model provides a stable universal rotary joint which comprises a base plate, a lower fixing plate in sliding contact with the base plate is arranged on the upper surface of the base plate, an upper fixing plate fixedly connected with the lower fixing plate is arranged on the lower fixing plate in a sleeved mode, and a left hanging lug and a right hanging lug are installed on the upper surface of the upper fixing plate. One face, facing the right hanging lug, of the left hanging lug and one face, facing the left hanging lug, of the right hanging lug are each provided with an oil-free lining used for being connected with a lifting control handle circular pipe gas circuit, a circular groove is formed in the middle of the lower surface of the upper fixing disc, the upper surface of the lower fixing disc is sunken downwards to form a countersunk head groove, and a deep groove ball bearing is installed in the countersunk head groove. A hollow rotating shaft playing a role in guiding air is installed in the deep groove ball bearing, the rotating shaft is in threaded connection with a nut used for limiting the position of the rotating shaft, and a plane needle bearing is installed between the base plate and the lower fixing plate. The utility model has the following beneficial effects: an operator can place a workpiece in any mode by randomly adjusting the direction of the workpiece without moving the position.

Description

TECHNICAL FIELD

[0001] The utility model relates to a stable universal rotation joint and belongs to the technical field of vacuum handling. BACKGROUND

[0002] When the workpiece is adsorbed, lifted, carried and released by the lifting control handle connected with the suction disc part, the workpiece needs to be adjusted in direction, and the operator needs to move to the appropriate position to realize the adjustment, and when the space is small or there is no space for the operator to move, the workpiece direction is difficult or impossible to adjust. CONTENT OF THE UTILITY MODEL

[0003] In view of the defects in the prior art, the utility model aims at providing a stable universal rotation joint to solve the problems in the background art, and the utility model can adjust the workpiece direction at will without moving the position of the operator to place the workpiece in any way.

[0004] In order to realize the above-mentioned purpose, the utility model is implemented by the following technical scheme: a stable universal rotation joint, comprising a bottom disc for mounting a suction disc, a lower fixed disc in sliding contact with the bottom disc is arranged on the upper surface of the bottom disc, an upper fixed disc connected fixedly with the lower fixed disc is arranged on the lower fixed disc, left and right hanging ears are arranged on the upper surface of the upper fixed disc, an oil-free bushing for connecting a lifting control handle circular pipe gas path is arranged on the side of the left hanging ear facing the right hanging ear and the side of the right hanging ear facing the left hanging ear, a circular groove is arranged at the middle position of the lower surface of the upper fixed disc, the circular groove is communicated with the internal space of the left hanging ear and the internal space of the right hanging ear, a counter-sunk groove is formed by the downward recess of the upper surface of the lower fixed disc, a deep groove ball bearing is arranged in the counter-sunk groove, a hollow shaft for guiding gas is arranged in the deep groove ball bearing, the lower end of the hollow shaft extends into the bottom disc, a nut for limiting the position of the hollow shaft is threadedly connected with the hollow shaft, the nut is arranged in the bottom disc, and a plane needle bearing is arranged between the bottom disc and the lower fixed disc.

[0005] Further, a lower annular groove is formed by the downward recess of the upper surface of the bottom disc, an upper annular groove is formed by the upward recess of the lower surface of the lower fixed disc, and the plane needle bearing is arranged in the space formed by the upper annular groove and the lower annular groove.

[0006] Further, a lower sealing groove is arranged on the upper surface of the lower fixed disc, and a lower sealing ring is arranged in the lower sealing groove and in contact with the upper fixed disc.

[0007] Further, an upper sealing groove is arranged on the upper surface of the upper fixed disc, and an upper sealing ring is arranged in the upper sealing groove and in contact with the left and right hanging ears.

[0008] Further, a ring groove is formed in the middle of the inner surface of the oil-free bushing, and an O-ring is installed in the ring groove for sleeving on the circular pipe air path of the lifting control handle.

[0009] Further, a plurality of countersunk holes are formed on the outer surfaces of the left and right hanging ears, a plurality of through holes are uniformly formed on the upper surface of the upper fixing disc and are aligned with the countersunk holes, a plurality of screw holes are uniformly formed on the upper surface of the lower fixing disc and are aligned with the through holes, and an internal hexagonal screw is inserted into the countersunk hole and penetrates the through hole and is threadedly connected in the screw hole.

[0010] Further, a retreat stop washer is arranged on the upper side of the nut and is sleeved on the rotating shaft.

[0011] Further, the rotating shaft has a T-shaped cross section, and the convex ring part at the upper end of the rotating shaft is lapped on the inner ring of the deep groove ball bearing.

[0012] The utility model discloses the beneficial effects of:

[0013] 1. The universal rotation joint formed by the left hanging ear, the right hanging ear, the upper fixing disc, the lower fixing disc, the rotating shaft and the bottom disc between the lifting control handle and the adsorbing chuck can make the workpiece rotate by 360 degrees when being adsorbed and lifted, and the operator can stand in place, gently push the workpiece with hands, and then the workpiece can be adjusted to any desired direction.

[0014] 2. The deep groove ball bearing can bear axial and radial load at the same time, has small friction resistance and high rotating speed, the planar needle bearing is added, the space is small, and the gap between the rotating parts can be balanced, so that the lower fixing disc and the bottom disc can relatively rotate and also can be kept stable and noiseless. BRIEF DESCRIPTION OF DRAWINGS

[0015] Other features, objects and advantages of the utility model will become more apparent through reading the following detailed description of the non-restrictive embodiments with reference to the accompanying drawings:

[0016] Fig. 1 It is a structural schematic view of the utility model of a stable universal rotation joint.

[0017] Fig. 2 It is another perspective view of the utility model of a stable universal rotation joint.

[0018] Fig. 3 It is a sectional view of the utility model of a stable universal rotation joint.

[0019] In the figure: 1 - base, 2 - upper fixed disc, 3 - right hanging ear, 4 - oilless bushing, 5 - left hanging ear, 6 - rotating shaft, 7 - nut, 8 - O-ring, 9 - upper sealing ring, 10 - lower sealing ring, 11 - retreat stop washer, 12 - deep groove ball bearing, 13 - flat needle bearing, 14 - lower fixed disc. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0021] Please refer to Figs. 1-3 The utility model provides a kind of stable universal rotation joint, including the bottom disc 1 for installing suction cup, bottom disc 1 upper surface is equipped with with bottom disc 1 sliding contact lower fixed disc 14, lower fixed disc 14 is equipped with with lower fixed disc 14 connection fixed upper fixed disc 2, upper fixed disc 2 upper surface is equipped with left hanging ear 5 and right hanging ear 3, left hanging ear 5, right hanging ear 3 outer surface is all processed with multiple counterbores, upper fixed disc 2 upper surface is evenly provided with multiple through holes aligned with counterbores, lower fixed disc 14 upper surface is evenly provided with multiple screw holes aligned with through hole, counterbores are inserted with internal hexagon screw, so that internal hexagon screw one end penetrates through hole and is connected in screw hole, realize using internal hexagon screw while limiting the relative position of left hanging ear 5, right hanging ear 3, upper fixed disc 2 and lower fixed disc 14, reduce the use amount of internal hexagon screw, lower fixed disc 14 upper surface is provided with lower sealing groove, lower sealing groove is equipped with lower sealing ring 10, lower sealing ring 10 is in contact with upper fixed disc 2, upper fixed disc 2 upper surface is provided with upper sealing groove, upper sealing groove is equipped with upper sealing ring 9, upper sealing ring 9 is in contact with left hanging ear 5, right hanging ear 3.

[0022] Please refer to Figs. 1-3The left hanging ear 5 and the right hanging ear 3 are both provided with an oil-free bushing 4 for connecting the round pipe gas path of the lifting control handle, wherein a ring groove is formed in the middle position of the inner surface of the oil-free bushing 4, and an O-ring 8 is installed in the ring groove for sleeving on the round pipe gas path of the lifting control handle; a circular groove is formed in the middle position of the lower surface of the upper fixed disc 2, and the circular groove is communicated with the internal space of the left hanging ear 5 and the internal space of the right hanging ear 3; a countersunk groove is formed in the upper surface of the lower fixed disc 14, and a deep groove ball bearing 12 is installed in the countersunk groove; a hollow shaft 6 for guiding gas is installed in the deep groove ball bearing 12; the lower end of the hollow shaft 6 extends into the bottom disc 1; the cross section of the hollow shaft 6 is T-shaped; the convex ring part of the upper end of the hollow shaft 6 is lapped on the inner ring of the deep groove ball bearing 12; a nut 7 for limiting the position of the hollow shaft 6 is threadedly connected to the hollow shaft 6, and the nut 7 is arranged in the bottom disc 1; a retreat-stop washer 11 is arranged on the upper side of the nut 7, and the retreat-stop washer 11 is sleeved on the hollow shaft 6; a plane needle bearing 13 is arranged between the bottom disc 1 and the lower fixed disc 14, wherein the upper surface of the bottom disc 1 is recessed downward to form a lower annular groove, the lower surface of the lower fixed disc 14 is recessed upward to form an upper annular groove matched with the lower annular groove, and the plane needle bearing 13 is arranged in the space formed by the upper annular groove and the lower annular groove; the plane needle bearing 13 is arranged by taking advantage of the deep groove ball bearing 12 which can simultaneously bear axial and radial load, has small friction resistance and high rotating speed; the plane needle bearing 13 occupies small space and can balance the gap between rotating parts, so that the lower fixed disc 14 and the bottom disc 1 can rotate relative to each other stably and without noise; the universal rotary joint formed by the left hanging ear 5, the right hanging ear 3, the upper fixed disc 2, the lower fixed disc 14, the hollow shaft 6 and the bottom disc 1 is arranged between the lifting control handle and the suction chuck, so that the workpiece can rotate by 360° when being lifted and sucked, and the operator can adjust the workpiece to any desired direction by slightly pushing the workpiece.

[0023] Although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments which can be understood by those skilled in the art.

Claims

1. A stable universal rotation joint comprising a base plate (1) for mounting a suction cup, characterized in that: The upper surface of the chassis (1) is provided with a lower fixed disc (14) in sliding contact with the chassis (1), the lower fixed disc (14) is sleeved with an upper fixed disc (2) connected and fixed with the lower fixed disc (14), the upper surface of the upper fixed disc (2) is provided with a left hanging ear (5) and a right hanging ear (3), one side of the left hanging ear (5) facing the right hanging ear (3) and one side of the right hanging ear (3) facing the left hanging ear (5) are both provided with an oil-free bushing (4) for connecting the circular pipe gas path of the lifting control handle, the lower surface of the upper fixed disc (2) is provided with a circular groove at the middle position, the circular groove is communicated with the internal space of the left hanging ear (5) and the internal space of the right hanging ear (3), the upper surface of the lower fixed disc (14) is concave downward to form a countersunk groove, the countersunk groove is provided with a deep groove ball bearing (12), the deep groove ball bearing (12) is provided with a hollow shaft (6) for guiding gas, the lower end of the shaft (6) extends into the chassis (1), the upper end of the shaft (6) is provided with a nut (7) for limiting the position of the shaft (6), the nut (7) is arranged in the chassis (1), and the chassis (1) and the lower fixed disc (14) are provided with a plane needle roller bearing (13).

2. A stable universal rotary joint according to claim 1, characterized in that: The upper surface of the chassis (1) is concave downward to form a lower annular groove, the lower surface of the lower fixed disc (14) is concave upward to form an upper annular groove matched with the lower annular groove, and the plane needle roller bearing (13) is arranged in the space formed by the upper annular groove and the lower annular groove.

3. A stable universal rotary joint according to claim 1, characterized in that: The upper surface of the lower fixed disc (14) is provided with a lower sealing groove, and the lower sealing groove is provided with a lower sealing ring (10).

4. The stable universal rotary joint of claim 1, wherein: The upper surface of the upper fixed disc (2) is provided with an upper sealing groove, and the upper sealing groove is provided with an upper sealing ring (9).

5. A stable universal rotary joint according to claim 1, characterized in that: The inner surface of the oil-free bushing (4) is provided with a ring groove at the middle position, and the ring groove is provided with an O-shaped ring (8) sleeved on the circular pipe gas path of the lifting control handle.

6. A stable universal rotary joint according to claim 1, characterized in that: The outer surface of the left hanging ear (5) and the right hanging ear (3) is processed with a plurality of countersunk holes, the upper surface of the upper fixed disc (2) is uniformly provided with a plurality of through holes aligned with the countersunk holes, and the upper surface of the lower fixed disc (14) is uniformly provided with a plurality of screw holes aligned with the through holes.

7. A stable universal rotary joint according to claim 1, characterized in that: The upper side of the nut (7) is provided with a retreat stop washer (11) sleeved on the shaft (6).

8. The stable universal rotary joint of claim 1, wherein: The cross section of the shaft (6) is T-shaped, and the convex ring part at the upper end of the shaft (6) is overlapped on the inner ring of the deep groove ball bearing (12).

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