High speed micro ball bearing and full automatic assembly equipment

Abstract

The present application relates to full-automatic assembly equipment, belongs to bearing technical field. In view of the problems of poor dustproof effect, low assembly efficiency and insufficient precision of the existing high-speed miniature ball bearing, the bearing includes inner ring I, outer ring II, rolling body, retainer and two dustproof components, annular grooves are arranged on the opposite sides of the inner ring I and the outer ring II, the rolling body is embedded in the retainer and placed in the annular grooves, three protrusions are arranged on the top of the elastic buffer pad in the dustproof component, cooperate with the dustproof ring to form multiple protection, can block impurities from entering and relieve vibration. The assembly equipment includes conveyor I, assembly support frame, two conveyors II, automatic assembly mechanism, jacking assembly and press-fitting assembly, can realize the integration of bearing conveying, fixing, grease injection, lubrication and dustproof component assembly, the workpiece is stably fixed by the clamping assembly, the lubrication effect is ensured by means of grease injection and automatic lubrication mechanism, and the assembly efficiency and precision are improved by using the automatic assembly mechanism.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of bearings and relates to a high-speed micro ball bearing and a full-automatic assembling device. BACKGROUND

[0002] The high-speed micro ball bearing is widely used in the fields of precision machinery, aerospace, medical devices and the like, and these fields have very high requirements for the rotation speed, precision, stability and service life of the bearing. At present, the high-speed micro ball bearing on the market is prone to have dust and impurities enter the bearing interior due to poor dustproof effect during long-term high-speed operation, which aggravates the wear between the rolling elements and the inner ring and the outer ring and affects the service life and running precision of the bearing. The dustproof structure of part of the bearings is simple in design and only a single dust cover or sealing ring is used, so it is difficult to maintain good sealing performance under high-speed rotation and complex working conditions.

[0003] In the assembling process of the high-speed micro ball bearing, the traditional mode is mostly dependent on manual operation, which is not only low in efficiency but also difficult to guarantee the assembling precision.

[0004] The existing assembling device is mostly a single-function device and cannot realize the integrated process from conveying, fixing, grease injection, lubrication to dustproof component assembling, so the workpiece needs to be transferred for many times, which increases the production time and cost and is also easy to cause damage to the workpiece during the transferring process. Meanwhile, the automatic degree of the device is low, the skill requirement for the operator is high, the labor intensity is large, and it is difficult to meet the demand of large-scale and high-precision production. Therefore, it has become an urgent problem in the industry to develop a high-speed micro ball bearing which is reasonable in structure and excellent in performance and a full-automatic device which can realize efficient and precise assembling.

[0005] Therefore, we propose a high-speed micro ball bearing and a full-automatic assembling device to solve the above-mentioned problems. SUMMARY

[0006] In view of this, the application provides a high-speed micro ball bearing and a full-automatic assembling device to solve the above-mentioned problems.

[0007] To achieve the above-mentioned purpose, the application provides the following technical scheme: comprising:

[0008] An inner ring I and an outer ring II arranged outside the inner ring I, and annular grooves are arranged on the mutually close sides of the inner ring I and the outer ring II, and a plurality of rolling elements are arranged in the two annular grooves;

[0009] A retainer is arranged between the inner ring I and the outer ring II, and the plurality of rolling elements are embedded in the retainer;

[0010] Two dustproof assemblies are arranged between the inner ring I and the outer ring II, and the dustproof assembly comprises a supporting ring, the supporting ring is provided with an elastic buffer pad, the elastic buffer pad is embedded in the outer ring II, the outer wall of the inner ring I is nested with a dustproof ring, and the bottom wall of the dustproof ring is in contact with the elastic buffer pad.

[0011] The top of the elastic buffer pad is provided with three protrusions, the inner protrusion is in contact with the outer wall of the dustproof ring, the middle protrusion is in contact with the bottom of the dustproof ring, and the outer protrusion is located outside the dustproof ring, thereby forming three protections.

[0012] The full-automatic assembling equipment for assembling the high-speed micro ball bearing is characterized in that the equipment comprises:

[0013] A conveyor I is provided with a plurality of conveying bases on the conveying belt, and the conveying base is provided with a clamping assembly for clamping the outer ring II.

[0014] An assembling support frame is arranged on one side of the conveyor I, and the top of the assembling support frame is provided with a grease injection mechanism and an automatic lubricating mechanism.

[0015] Two conveyors II are arranged on the two sides of the conveyor I respectively, a plurality of moving bases are fixedly arranged on the chain conveying plate of the conveyor II, and the two groups of moving bases are respectively provided with a positioning cylinder I for containing the elastic buffer pad and a positioning cylinder II for containing the dustproof ring.

[0016] An automatic assembling mechanism is arranged on the two conveyors II, and the automatic assembling mechanism comprises a driving assembly and an automatic chuck, and the driving assembly drives the automatic chuck to clamp and move the positioning cylinder II.

[0017] A jacking assembly is arranged in the conveyor II below the positioning cylinder I, and is used for jacking the elastic buffer pad and sleeving the elastic buffer pad on the dustproof ring in the positioning cylinder II.

[0018] A press-fitting assembly is arranged on the automatic assembling mechanism, and is used for press-fitting the sleeved elastic buffer pad and dustproof ring to the inner ring I and the outer ring II.

[0019] The clamping assembly comprises:

[0020] A V-shaped positioning block I is fixedly arranged on the conveying base;

[0021] A fixed base block is fixedly arranged on one side of the top of the conveying base;

[0022] Two guide sliding rods are arranged on one side of the fixed base block in a sliding manner;

[0023] A V-shaped positioning block II is fixedly arranged on one end of the two guide sliding rods and is arranged opposite to the V-shaped positioning block I;

[0024] Compression spring I, set in the outer wall of the guide slide rod, its two ends respectively resist V-shaped positioning block II and fixed base block.

[0025] The grease injection mechanism comprises:

[0026] Fixed support I, fixedly arranged on the top of the assembly support frame;

[0027] The sliding block is arranged on one side of the fixed support I through the guide rail;

[0028] The drive cylinder I is fixedly arranged on the top of the fixed support I and the output end is connected with the sliding block;

[0029] The grease injection disc is communicated with the sliding block through the connecting pipe I, a plurality of through holes are arranged on the bottom of the grease injection disc, and the through holes correspond to the gap positions between the inner ring I and the outer ring II.

[0030] The automatic lubricating mechanism comprises:

[0031] The fixed support II is fixedly arranged on the top of the assembly support frame;

[0032] The lifting slide II is arranged on one side of the fixed support II through the guide rail;

[0033] The drive cylinder II is fixedly arranged on the top of the fixed support II and the output end is connected with the lifting slide II;

[0034] The abutting plate is connected with the bottom of the lifting slide II through a plurality of guide rods and abuts against the outer ring II;

[0035] The transmission driving disc is fixedly arranged on the output end of the drive motor IV, the drive motor IV is fixedly arranged on the top of the lifting slide II, and the transmission driving disc abuts against the inner ring I to drive the rotation of the inner ring I.

[0036] A plurality of positioning pins are fixedly arranged on the top of the moving base plate, and positioning grooves matched with the positioning pins are arranged on the outer walls of the positioning cylinder I and the positioning cylinder II.

[0037] The drive assembly comprises:

[0038] The support body is fixedly arranged on the top of the two conveyors II;

[0039] The transmission screw I is rotatably arranged in the support body through a bearing;

[0040] The drive motor I is fixedly arranged on one side of the support body and the output end is connected with the transmission screw I;

[0041] The moving slide is sleeved on the transmission screw I through a ball nut;

[0042] The lifting slide I is arranged on one side of the moving slide;

[0043] Transmission screw II, is rotatably arranged on one side of the moving slide through the bearing;

[0044] Drive motor II, is fixedly arranged on one side of the moving slide and the output end is connected with the transmission screw II;

[0045] The automatic chuck is fixedly arranged on the connecting base at the bottom of the lifting slide I.

[0046] The jacking assembly comprises:

[0047] Fixed support III, is fixedly arranged in the conveyor II;

[0048] Electric drive push rod, is fixedly arranged at the top of the fixed support III;

[0049] Lifting plate, is slidably arranged outside the two positioning guide pipes in the positioning cylinder I;

[0050] Extension rod, is fixedly arranged at the bottom of the lifting plate and matched with the output end of the electric drive push rod.

[0051] The press-fitting assembly comprises:

[0052] Drive motor III, is fixedly arranged at the top of the connecting base;

[0053] Connecting guide pipe II, is rotatably arranged in the connecting base and the automatic chuck through the bearing support seat, and the top is connected with the output end of the drive motor III;

[0054] Locking nut ring, is fixedly arranged at the bottom of the connecting guide pipe II;

[0055] Transmission screw III, is threadedly connected with the locking nut ring, and the outer wall is provided with a plane;

[0056] Sliding ring, is fixedly arranged in the automatic chuck and slidably matched with the plane of the transmission screw III;

[0057] Pressing plate, is fixedly arranged at the bottom of the transmission screw III.

[0058] When the drive motor III drives the connecting guide pipe II to rotate, the transmission screw III moves along the axial direction under the limiting of the sliding ring, and drives the pressing plate to press the elastic buffer pad and the dustproof ring.

[0059] The beneficial effects of the present application are:

[0060] 1、The full-automatic assembly equipment disclosed by the present application, the two dustproof assemblies form an effective protection structure, the elastic buffer pad under the support of the support ring is in abutment with the dustproof ring, which can not only prevent dust and impurities from entering the bearing, prevent the rolling body and the groove from being worn due to pollution, but also can alleviate the vibration of the bearing during operation, reduce the noise, and ensure the stability of operation.

[0061] 2、The full-automatic assembly equipment disclosed by the application, through the cooperation of the V-shaped positioning blocks I and II of the clamping assembly on the conveyor I, stable clamping of the outer ring II is formed under the elastic force of the compression spring I, so that the workpiece cannot be loose and deviated in the conveying and assembling process, and a stable foundation is laid for the subsequent process.

[0062] 3、The full-automatic assembly equipment disclosed by the application optimizes the lubricating effect of the bearing through the design of the grease injection and lubricating mechanism, the grease injection mechanism moves the sliding block through the driving cylinder I, so that the grease injection disc is accurately aligned with the gap, and the quantitative grease injection is realized in cooperation with the grease injection pump, so that the uniform supply of lubricating grease is ensured, and the automatic lubricating mechanism rotates the inner ring I through the driving motor IV, so that the injected grease is uniformly distributed under the centrifugal force, further reducing the friction loss during operation and improving the use performance of the bearing.

[0063] 4、The full-automatic assembly equipment disclosed by the application improves the automation level and precision of assembly through the cooperation of the conveyor II and the automatic assembly mechanism, the conveyor II realizes accurate positioning and conveying of the positioning cylinders I and II through the cooperation of the positioning pin and the positioning groove, provides accurate material supply for automatic assembly, the driving assembly of the automatic assembly mechanism drives the automatic chuck to move accurately, cooperates with the jacking assembly to complete the sleeving of the elastic buffer pad and the dustproof ring, and finally realizes the assembly through the press-fitting assembly, the whole process reduces manual intervention, improves assembly efficiency and reduces production error.

[0064] Other advantages, objects, and features of the present application will be apparent to those skilled in the art from the following specification, in some degree of particularity, and in others, only in general terms. The objects and other advantages of the present application will be realized and attained by the embodiments embodied in the following specification. BRIEF DESCRIPTION OF DRAWINGS

[0065] In order to make the purpose, technical scheme and advantages of the present application clearer, the preferred detailed description of the present application will be made below in combination with the drawings, in which:

[0066] Figure 1 is a sectional view of the high-speed miniature ball bearing of the present application;

[0067] Figure 2 is a three-dimensional structure schematic view of the full-automatic assembly equipment of the present application;

[0068] Figure 3 is another three-dimensional structure schematic view of the full-automatic assembly equipment of the present application from another perspective;

[0069] Figure 4 is a schematic view of the conveying plate and the positioning block structure of the full-automatic assembly equipment of the present application;

[0070] Figure 5 Structure diagram of grease injection mechanism of full-automatic assembly equipment of the application;

[0071] Figure 6 Structure diagram of lubricating mechanism of full-automatic assembly equipment of the application;

[0072] Figure 7 Structure diagram of second conveyor of full-automatic assembly equipment of the application;

[0073] Figure 8 Structure diagram of moving frame and lifting frame of full-automatic assembly equipment of the application;

[0074] Figure 9 Structure diagram of pressing plate installation of full-automatic assembly equipment of the application;

[0075] Figure 10 Structure diagram of positioning cylinder and moving plate of full-automatic assembly equipment of the application;

[0076] Figure 11 Structure diagram of electric push rod installation of full-automatic assembly equipment of the application;

[0077] Figure 12 Structure diagram of sectional view of positioning cylinder of full-automatic assembly equipment of the application.

[0078] Reference signs: 1, inner ring I; 2, outer ring II; 3, rolling element; 4, retainer; 5, annular groove; 6, support ring; 7, elastic buffer pad; 8, dustproof ring; 9, conveyor I; 91, conveying base plate; 92, V-shaped positioning block I; 93, fixed base block; 94, guide slide rod; 95, V-shaped positioning block II; 96, compression spring I; 97, limiting strip; 10, assembly support frame; 11, conveyor II; 111, chain conveying plate; 112, moving base plate; 113, positioning pin; 115, positioning groove; 12, protective cover; 13, automatic assembly mechanism; 131, support main body; 132, driving motor I; 133, transmission screw I; 134, moving slide; 135, driving motor II; 136, lifting slide I; 137, transmission screw II; 138, connecting base; 139, driving motor III; 1310, automatic chuck; 1311, pressing plate; 1312, bearing support seat; 1313, connecting guide pipe II; 1314, locking nut ring; 1315, sliding ring; 1316, transmission screw III; 14, grease injection mechanism; 141, fixed support I; 142, sliding block; 143, driving cylinder I; 144, connecting guide pipe I; 145, grease injection disc; 15, automatic lubricating mechanism; 151, fixed support II; 152, lifting slide II; 153, driving cylinder II; 154, fixed base I; 155, guide rod; 156, compression spring II; 157, abutting plate; 158, driving motor IV; 159, transmission driving disc; 16, positioning cylinder I; 161, fixed support III; 162, electrically driven push rod; 164, positioning guide pipe; 165, lifting plate; 166, extension rod; 17, positioning cylinder II. DETAILED DESCRIPTION

[0079] The present application is described in greater detail by the following specific examples, and other advantages and effects of the present application that can be easily understood by those skilled in the art from this disclosure. The present application can also be implemented or applied by other different specific embodiments, and various modifications or changes can be made to the details in this specification based on different views and applications without departing from the spirit of the present application. It should be noted that the drawings provided in the following examples only schematically illustrate the basic concept of the present application, and the features in the following examples and embodiments can be combined with each other without conflict.

[0080] The drawings are only used for exemplary illustration, and the representation is only a schematic diagram, not a physical diagram, and cannot be understood as a limitation of the present application; in order to better illustrate the embodiments of the present application, some components in the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; it can be understood by those skilled in the art that some known structures and their descriptions in the drawings may be omitted.

[0081] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances. Example

[0082] like Figure 1 As shown, the high-speed miniature ball bearing includes an inner ring I1 and an outer ring II2 located outside the inner ring I1. Both the inner ring I1 and the outer ring II2 are made of high-strength bearing steel and have undergone quenching treatment, achieving a surface hardness of HRC60-65, enabling them to withstand high speeds and loads. Annular grooves 5 are formed on the adjacent sides of both the inner ring I1 and the outer ring II2. The curvature of the grooves matches the curvature of the rolling elements 3. Multiple rolling elements 3 are installed within the two annular grooves 5. The rolling elements 3 are high-precision ceramic balls with a diameter error controlled within ±0.001mm and a surface roughness Ra≤0.02μm, effectively reducing the coefficient of friction. A retainer 4 is located between the inner ring I1 and the outer ring II2 and is made of wear-resistant phenolic resin. Multiple annular grooves 5 are embedded within the retainer 4. The pockets on the retainer 4 are clearance-fitted with the rolling elements 3, with a clearance value of 0.01-0.03mm, ensuring flexible rotation of the rolling elements 3 while preventing them from falling out. Two dustproof components are installed between the inner ring I1 and the outer ring II2. The dustproof components include a support ring 6, which is made of brass and has good ductility and wear resistance. An elastic buffer pad 7 is installed on the support ring 6. The elastic buffer pad 7 is made of nitrile rubber with a Shore hardness of 60-70 and has good elasticity and sealing performance. The elastic buffer pad 7 is embedded in the outer ring II2, and the fit gap between the elastic buffer pad 7 and the outer ring II2 is 0.02-0.05mm. A dustproof ring 8 is nested on the outer wall of the inner ring I1. The dustproof ring 8 is made of stainless steel and chrome-plated, with excellent rust resistance. The bottom wall of the dustproof ring 8 abuts against the elastic buffer pad 7. A certain pre-tightening force is applied between the contact surfaces to ensure the sealing effect. The top of the elastic buffer pad 7 has three protrusions. The inner protrusion abuts against the outer wall of the dustproof ring 8, the middle protrusion abuts against the bottom of the dustproof ring 8, and the outer protrusion is located on the outside of the dustproof ring 8, forming three layers of protection. Example

[0083] Reference Figures 2-12The full-automatic assembling equipment is used for assembling the high-speed micro ball bearing, and comprises a conveyor I 9. A plurality of conveying bases 91 are fixed on two conveying belts of the conveyor I 9. The conveying bases 91 are provided with clamping assemblies for fixing the outer ring II 2. The clamping assembly comprises a V-shaped positioning block I 92 fixed on the conveying base 91. A fixed base block 93 is fixed on the top of one side of the conveying base 91. Two guide sliding rods 94 are slidably arranged on one side of the fixed base block 93. One end of the two guide sliding rods 94 is fixedly connected with a V-shaped positioning block II 95 used in cooperation with the V-shaped positioning block I 92. The other end of the two guide sliding rods 94 is fixedly connected with a limiting strip 97. The outer wall of the guide sliding rod 94 is sleeved with a compression spring I 96. The two ends of the compression spring I 96 are respectively abutted against the V-shaped positioning block II 95 and the side of the fixed base block 93 close to each other through spring seats. In use, the outer ring II 2 can be placed on the V-shaped positioning block I 92 by the mechanical hand. During the placing process, the V-shaped positioning block II 95 can be pushed by the arc-shaped surface at the bottom of the outer ring II 2. The guide sliding rod 94 slides, and the compression spring I 96 is compressed. The V-shaped positioning block I 92 and the V-shaped positioning block II 95 are cooperated to clamp and fix the outer ring II 2 by the elastic force of the compression spring I 96. The limiting strip 97 can prevent the guide sliding rod 94 from sliding off the fixed base block 93, and can ensure that the outer ring II 2 will not be displaced in the subsequent assembling process.

[0084] The assembling support frame 10 is arranged on one side of the conveyor I 9. The top of the assembling support frame 10 is fixed with the grease injection mechanism 14 and the automatic lubricating mechanism 15. The top of the assembling support frame 10 is also fixed with the protective cover 12. The grease injection mechanism 14 comprises a fixed support I 141 fixed on the top of the assembling support frame 10. The fixed support I 141 is slidably provided with a sliding block 142 on one side through a guide rail. The top of the fixed support I 141 is fixed with a driving cylinder I 143. The output end of the driving cylinder I 143 is fixedly connected with the sliding block 142. The top of the sliding block 142 is fixedly penetrated with a connecting pipe I 144. The bottom end of the connecting pipe I 144 is connected with a grease injection disc 145 in communication. The bottom of the grease injection disc 145 is provided with a plurality of through holes in communication with the connecting pipe I 144. The through holes correspond to the gaps between the inner ring I 1 and the outer ring II 2. The top end of the connecting pipe I 144 is connected with a grease injection pump through a pipeline. When the conveying base 91 provided with the outer ring II 2 is conveyed to the lower side of the grease injection mechanism 14 by the conveyor I 9, the driving cylinder I 143 is started to drive the sliding block 142 to slide along the guide rail, so as to drive the grease injection disc 145 to move to a suitable position. The grease injection pump conveys the grease to the grease injection disc 145 through the connecting pipe I 144, and then the grease is injected into the gaps between the inner ring I 1 and the outer ring II 2 through the through holes at the bottom of the grease injection disc 145, so as to realize the precise injection of the grease and ensure the lubricating effect of the bearing. The protective cover 12 can prevent the injected grease from being polluted by the outside.

[0085] The automatic lubricating mechanism 15 comprises a fixed support II 151 fixed on the top of one side of the assembly support frame 10, one side of the fixed support II 151 sliding with a lifting slide II 152 through a guide rail, the top of the fixed support II 151 being fixed with a driving cylinder II 153, the output end of the driving cylinder II 153 being fixedly connected with the lifting slide II 152, the bottom of the lifting slide II 152 being fixed with a fixed base I 154, the top of the fixed base I 154 penetratingly sliding with a plurality of guide rods 155, the bottom of the plurality of guide rods 155 being fixed with a same abutting plate 157, the outer wall of the guide rod 155 being sleeved with a compression spring II 156, the two ends of the compression spring II 156 being respectively abutted with the mutually close sides of the fixed base I 154 and the abutting plate 157, the top of the lifting slide II 152 being fixed with a driving motor IV 158, the output end of the driving motor IV 158 being fixed with a transmission driving disc 159, the abutting plate 157 being abutted with the outer ring II 2 after being pressed, the transmission driving disc 159 being abutted with the inner ring I 1, and the inner ring I 1 is driven to rotate in the outer ring II 2 by the driving motor IV 158. After the injection of the oil is completed, the conveyor I 9 delivers the bearing to below the automatic lubricating mechanism 15, the driving cylinder II 153 is started to drive the lifting slide II 152 to descend, the abutting plate 157 first contacts the outer ring II 2, along with the continuous descending of the lifting slide II 152, the compression spring II 156 is compressed, the abutting plate 157 tightly presses the outer ring II 2, at the same time, the transmission driving disc 159 contacts the inner ring I 1, the driving motor IV 158 is started, the inner ring I 1 is driven to rotate in the outer ring II 2 through the transmission driving disc 159, the injected oil is evenly distributed in the gap, the lubricating effect is improved, and the guide rod 155 can ensure the stable movement of the abutting plate 157.

[0086] Two conveyors II 111 are arranged on the two sides of the conveyor I 9, a plurality of moving base plates 112 are fixed on the two chain conveyors 111 of the conveyor II 111, a plurality of positioning pins 113 are fixed on the top of the moving base plate 112, a positioning cylinder I 116 for containing the elastic buffer pad 7 and a positioning cylinder II 117 for containing the dustproof ring 8 are respectively clamped on the two groups of moving base plates 112, and positioning grooves 115 matched with the positioning pins 113 are formed in the outer walls of the positioning cylinder I 116 and the positioning cylinder II 117. The positioning cylinder I 116 and the positioning cylinder II 117 are respectively placed on the two groups of moving base plates 112, the positioning pins 113 are inserted into the positioning grooves 115, the rapid positioning and fixing of the positioning cylinder I 116 and the positioning cylinder II 117 are realized, the deviation in the conveying process is avoided, the conveyor II 111 drives the moving base plate 112 to move through the chain conveyor 111, and the positioning cylinder I 116 and the positioning cylinder II 117 are conveyed to the specified position.

[0087] The automatic assembly mechanism 13 is arranged on the two conveyors II 11, and the automatic assembly mechanism 13 comprises a supporting body 131 fixed on the top of the two conveyors II 11, a transmission screw I 133 rotatably arranged in the supporting body 131, a driving motor I 132 fixed on one side of the supporting body 131, an output end of the driving motor I 132 fixedly connected with one end of the transmission screw I 133, a moving slide 134 slidably arranged in the supporting body 131, a ball nut on one side of the moving slide 134 slidably sleeved on the transmission screw I 133, a lifting slide I 136 slidably arranged on one side of the moving slide 134, a transmission screw II 137 rotatably arranged on one side of the moving slide 134, a driving motor II 135 fixed on one side of the moving slide 134, an output end of the driving motor II 135 fixedly connected with the transmission screw II 137, a connecting base 138 fixed on one side of the lifting slide I 136, and an automatic chuck 1310 fixed on the bottom of the connecting base 138. When the driving motor I 132 is started, the transmission screw I 133 is driven to rotate, and under the action of the ball nut, the moving slide 134 slides along the supporting body 131, so that the horizontal movement of the automatic chuck 1310 is realized; when the driving motor II 135 is started, the transmission screw II 137 is driven to rotate, so that the lifting slide I 136 slides along the moving slide 134, the lifting movement of the automatic chuck 1310 is realized, and thus the automatic chuck 1310 can be accurately moved to the positioning cylinder II 17 and clamped, and the automatic chuck 1310 can be a pneumatic chuck.

[0088] The conveyor II 11 located below the positioning cylinder I 16 is provided with a jacking assembly, and the jacking assembly comprises a fixed support III 161 fixed in the conveyor II 11, a motor-driven push rod 162 fixed on the top of the fixed support III 161, two positioning guide pipes 164 fixed in the positioning cylinder I 16 and used for limiting the elastic buffer pad 7, a lifting plate 165 slidably sleeved on the outer walls of the two positioning guide pipes 164, and an extension rod 166 fixed on the bottom of the lifting plate 165 and used in cooperation with the output end of the motor-driven push rod 162. When the automatic chuck 1310 clamping the positioning cylinder II 17 moves above the positioning cylinder I 16, the motor-driven push rod 162 is started to push the extension rod 166 to rise, drive the lifting plate 165 to slide upwards along the positioning guide pipes 164, and push the elastic buffer pad 7 in the positioning cylinder I 16 to move upwards so as to be sleeved on the dustproof ring 8 in the positioning cylinder II 17. Since the diameter of the positioning guide pipe 164 is matched with the diameter of the bottom of the dustproof ring 8, and the positioning guide pipe 164 can ensure that the elastic buffer pad 7 does not deviate during the movement, the sleeving process is ensured to be smoothly performed.

[0089] The automatic assembly mechanism 13 is further provided with a press-fitting assembly, which comprises a driving motor III 139 fixed on the top of a connecting base 138, a bearing support seat 1312 is fixed on the top of the connecting base 138, a connecting guide pipe II 1313 is rotatably arranged in the bearing support seat 1312 and the automatic chuck 1310 through bearings, a locking nut ring 1314 is fixed on the bottom of the connecting guide pipe II 1313, a transmission screw III 1316 is threadedly arranged in the locking nut ring 1314, a flat surface is formed on the outer wall of the transmission screw III 1316, a sliding ring 1315 is slidably sleeved on the flat surface, the sliding ring 1315 is fixed in the automatic chuck 1310, the bottom of the transmission screw III 1316 extends to the bottom of the automatic chuck 1310 and is fixedly sleeved with a pressing plate 1311, and the top of the connecting guide pipe II 1313 is fixedly connected with the output end of the driving motor III 139. After the elastic buffer pad 7 and the dustproof ring 8 are sleeved, the automatic chuck 1310 clamps and moves to the top of the bearing, the driving motor III 139 is started, the transmission screw III 1316 is driven to rotate through the connecting guide pipe II 1313, the transmission screw III 1316 is threadedly connected with the locking nut ring 1314, and the sliding ring 1315 limits the rotation of the transmission screw III 1316, the transmission screw III 1316 moves downward, the pressing plate 1311 is driven to move downward, the elastic buffer pad 7 and the dustproof ring 8 are press-fitted on the inner ring I 1 and the outer ring II 2, and the assembly of the bearing is completed.

[0090] Working principle: first, the conveyor I 9 is started, the synchronous belt drive of the conveyor belt is operated, and the conveyor base plate 91 is driven to move. The operator or the mechanical hand places the outer ring II 2 on the V-shaped positioning block I 92 on the conveyor base plate 91, pushes the V-shaped positioning block II 95, the guide slide rod 94 slides in the fixed base block 93, the compression spring I 96 is compressed, the spring force is used to clamp the outer ring II 2 by the V-shaped positioning block I 92 and the V-shaped positioning block II 95, the clamping force is kept at 50-100 N, and it is ensured that the outer ring II 2 will not be loose during the conveying process.

[0091] When the conveyor base plate 91 provided with the outer ring II 2 is conveyed to the position below the grease injection mechanism 14, the photoelectric sensor detects the signal and transmits it to the control system, the control system instructs the driving cylinder I 143 to work. The driving cylinder I 143 drives the sliding block 142 to slide along the linear guide rail, drives the grease injection disc 145 to move, and stops at the position above the bearing. Then, the grease injection pump delivers the lubricating grease to the grease injection disc 145 through the connecting guide pipe I 144 according to the set flow rate, the grease injection disc 145 is injected into the gap between the inner ring I 1 and the outer ring II 2 through the through hole at the bottom of the grease injection disc 145, and the precise grease injection is realized. After the grease injection is completed, the driving cylinder I 143 drives the sliding block 142 to reset, and the conveyor I 9 continues to convey the bearing to the next station.

[0092] When the bearing is conveyed under the automatic lubricating mechanism 15, the photoelectric sensor detects the position again, and the control system starts the driving cylinder II 153. The driving cylinder II 153 pushes the lifting slide II 152 to descend along the linear guide rail, and the abutting plate 157 first contacts the outer ring II 2. As the lifting slide II 152 continues to descend, the compression spring II 156 is compressed, and the abutting plate 157 tightly presses the outer ring II 2. At the same time, the transmission driving disc 159 contacts the inner ring I 1. At this time, the driving motor IV 158 starts to drive the transmission driving disc 159 to rotate, and then drives the inner ring I 1 to rotate in the outer ring II 2 for 5-10s, so that the injected grease is uniformly distributed in the gap under the action of centrifugal force, ensuring that each part of the bearing can be fully lubricated. After lubrication is completed, the driving cylinder II 153 drives the lifting slide II 152 to rise and reset, and the conveyor I 9 conveys the bearing to the assembly station.

[0093] When the conveyor I 9 conveys the bearing, the conveyors II 11 on both sides are also working. The chain conveyor plate of the conveyor II 11 drives the movement base plate 112 to move, and the positioning pin 113 on the movement base plate 112 is inserted into the positioning groove 115 of the positioning cylinder I 116 and the positioning cylinder II 117, achieving precise positioning of the two. The positioning cylinder I 116 is provided with an elastic buffer pad 7, and the positioning cylinder II 117 is provided with a dustproof ring 8, which are conveyed into the working range of the automatic assembly mechanism 13, respectively.

[0094] When the automatic assembly mechanism 13 starts to work, the driving motor I 132 starts to drive the transmission screw I 133 to rotate, and under the action of the ball nut, the movement slide 134 slides along the linear guide rail on the support main body 131, so that the automatic chuck 1310 moves above the positioning cylinder II 117. Then, the driving motor II 135 starts to drive the transmission screw II 137 to rotate, so that the lifting slide I 136 descends along the linear guide rail on the movement slide 134, and the automatic chuck 1310 closes to clamp the positioning cylinder II 117. Then, the driving motor II 135 reverses to drive the lifting slide I 136 to rise, and the driving motor I 132 reverses to drive the movement slide 134 to move, conveying the positioning cylinder II 117 above the positioning cylinder I 116 and keeping them concentric.

[0095] At this time, the lifting assembly below the positioning cylinder 116 starts to work, the electric drive push rod 162 pushes the extension rod 166 to rise at a speed of 50 mm / s, drives the lifting plate 165 to slide upwards along the positioning guide pipe 164, the lifting plate 165 pushes the elastic buffer pad 7 in the positioning cylinder 116 to move upwards, and the press-fitting assembly starts to work, the driving motor 1139 is started, drives the connecting guide pipe 12113 to rotate, and further drives the transmission screw 13116 to rotate. Since the transmission screw 13116 is in threaded connection with the locking nut ring 1314, and the sliding ring 1315 limits the rotation of the transmission screw 1316, the transmission screw 13116 can only move downwards, and drives the pressing plate 1311 to move the dustproof ring 8 downwards with a certain pressure. The cooperation of the two makes the elastic buffer pad 7 sleeved on the dustproof ring 8 in the positioning cylinder 117. Due to the guiding effect of the positioning guide pipe 164, the coaxial error between the elastic buffer pad 7 and the dustproof ring 8 is controlled within 0.1 mm, so that the sleeving is accurate. After the sleeving is completed, the electric drive push rod 162 drives the extension rod 166 to descend and reset.

[0096] The driving motors 1132 and 1135 of the automatic assembly mechanism 13 work again, and the dustproof ring 8 sleeved with the elastic buffer pad 7 is transported to the bearing assembly position. At this time, the press-fitting assembly starts to work, the driving motor 1139 is started, drives the connecting guide pipe 12113 to rotate, and further drives the transmission screw 13116 to rotate. Since the transmission screw 13116 is in threaded connection with the locking nut ring 1314, and the sliding ring 1315 limits the rotation of the transmission screw 1316, the transmission screw 13116 can only move downwards, and drives the pressing plate 1311 to press the elastic buffer pad 7 and the dustproof ring 8 on the inner ring 1 and the outer ring 2 with a certain pressure, and completes the final assembly of the bearing. After the press-fitting is completed, the driving motors are reversed, drive the related parts to reset, and drive the positioning cylinder 117 to be transported to the upper side of the positioning cylinder 116 again, the elastic buffer pad 7 is sleeved on the dustproof ring 8 in the positioning cylinder 117, and the preparation for the assembly of the next bearing is completed.

[0097] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions, which should be covered in the scope of the claims of the present application.

Claims

1. A fully automatic assembly equipment for assembling high-speed miniature ball bearings, characterized in that, The high-speed miniature ball bearing includes an inner ring I (1), an outer ring II (2), an annular groove (5), multiple rolling elements (3), and a retainer (4); two dustproof components are disposed between the inner ring I (1) and the outer ring II (2). The dustproof components include a support ring (6), on which an elastic buffer pad (7) is provided. The elastic buffer pad (7) is embedded in the outer ring II (2). A dustproof ring (8) is nested on the outer wall of the inner ring I (1). The bottom wall of the dustproof ring (8) abuts against the elastic buffer pad (7). The top of the elastic buffer pad (7) has three protrusions. The protrusion on the inner side abuts against the outer wall of the dustproof ring (8), the protrusion in the middle abuts against the bottom of the dustproof ring (8), and the protrusion on the outer side is located at the bottom of the outer ring. Three layers of protection are formed on the outside of the dustproof ring (8); the fully automatic assembly equipment includes a conveyor I (9), on which multiple conveyor base plates (91) are fixedly provided, and on which the conveyor base plates (91) are clamping components for clamping the outer ring II (2); an assembly support frame (10) is set on one side of the conveyor I (9), and the top of the assembly support frame (10) is provided with a grease injection mechanism (14) and an automatic lubrication mechanism (15); two conveyors II (11) are respectively set on both sides of the conveyor I (9), and multiple movable base plates (112) are fixedly provided on the chain conveyor plate (111) of the conveyor II (11), and on the two sets of movable base plates (112) are respectively clamped with containers for holding The positioning cylinder I (16) for the elastic buffer pad (7) and the positioning cylinder II (17) for holding the dustproof ring (8); an automatic assembly mechanism (13) spanning two conveyors II (11), the automatic assembly mechanism (13) including a drive assembly and an automatic chuck (1310), the drive assembly driving the automatic chuck (1310) to clamp and move the positioning cylinder II (17); a lifting assembly, located in the conveyor II (11) below the positioning cylinder I (16), for lifting the elastic buffer pad (7) and fitting it onto the dustproof ring (8) inside the positioning cylinder II (17); a pressing assembly, located on the automatic assembly mechanism (13), for pressing the fitted elastic buffer pad (7) and dustproof ring (8) onto the inner ring I (1) and outer ring II (2). The drive assembly includes: a support body (131), fixedly mounted on the top of the two conveyors II (11); a transmission screw I (133), rotatably mounted inside the support body (131) via a bearing; a drive motor I (132), fixedly mounted on one side of the support body (131) and connected to the transmission screw I (133) at its output end; a movable slide (134), mounted on the transmission screw I (133) via a ball nut; a lifting slide I (136), slidably mounted on one side of the movable slide (134); a transmission screw II (137), rotatably mounted on one side of the movable slide (134) via a bearing; and a drive motor II (135), fixedly mounted on one side of the movable slide (134) and connected to the transmission screw II (137) at its output end.The automatic chuck (1310) is fixedly mounted on the connecting base (138) at the bottom of the lifting slide I (136); the lifting assembly includes: a fixed bracket III (161), fixedly mounted inside the conveyor II (11); an electric drive push rod (162), fixedly mounted on the top of the fixed bracket III (161); a lifting plate (165), slidably mounted on the outer wall of two positioning guide tubes (164) inside the positioning cylinder I (16); and an extension rod (166), fixedly mounted on the bottom of the lifting plate (165) and cooperating with the output end of the electric drive push rod (162); the pressing assembly includes: a drive motor III (139), fixedly mounted on the top of the connecting base (138). The connecting conduit II (1313) is rotatably mounted within the connecting base (138) and the automatic chuck (1310) via a bearing support (1312), and its top is connected to the output end of the drive motor III (139); a locking nut ring (1314) is fixedly mounted at the bottom of the connecting conduit II (1313); a transmission screw III (1316) is threadedly connected to the locking nut ring (1314), and its outer wall has a flat surface; a sliding ring (1315) is fixedly mounted within the automatic chuck (1310) and slides in cooperation with the plane of the transmission screw III (1316); a pressure plate (1311) is fixedly mounted at the bottom of the transmission screw III (1316).

2. The fully automated assembly equipment according to claim 1, characterized in that, The clamping assembly includes: a V-shaped positioning block I (92) fixedly mounted on the conveying base plate (91); a fixed base block (93) fixedly mounted on the top of one side of the conveying base plate (91); two guide slide rods (94) slidably mounted on one side of the fixed base block (93); a V-shaped positioning block II (95) fixedly mounted on one end of the two guide slide rods (94) and opposite to the V-shaped positioning block I (92); and a compression spring I (96) sleeved on the outer wall of the guide slide rods (94), with its two ends abutting against the V-shaped positioning block II (95) and the fixed base block (93) respectively.

3. The fully automated assembly equipment according to claim 2, characterized in that, The grease injection mechanism (14) includes: a fixed bracket I (141), which is fixedly mounted on the top of the assembly support frame (10); a sliding block (142), which is slidably mounted on one side of the fixed bracket I (141) via a guide rail; a drive cylinder I (143), which is fixedly mounted on the top of the fixed bracket I (141) and whose output end is connected to the sliding block (142); and a grease injection disc (145), which is connected to the sliding block (142) via a connecting conduit I (144). The bottom of the grease injection disc (145) is provided with multiple through holes, and the through holes correspond to the gap positions between the inner ring I (1) and the outer ring II (2).

4. The fully automated assembly equipment according to claim 3, characterized in that, The automatic lubrication mechanism (15) includes: a fixed bracket II (151), fixedly mounted on the top of the assembly support frame (10); a lifting slide II (152), which is slidably mounted on one side of the fixed bracket II (151) via a guide rail; a drive cylinder II (153), which is fixedly mounted on the top of the fixed bracket II (151) and whose output end is connected to the lifting slide II (152); a contact plate (157), which is slidably connected to the bottom of the lifting slide II (152) via multiple guide rods (155) and abuts against the outer ring II (2); and a transmission drive disc (159), which is fixedly mounted on the output end of the drive motor IV (158), the drive motor IV (158) being fixedly mounted on the top of the lifting slide II (152), and the transmission drive disc (159) abutting against the inner ring I (1) to drive its rotation.

5. The fully automated assembly equipment according to claim 4, characterized in that, The top of the movable base plate (112) is fixedly provided with a plurality of positioning pins (113), and the outer walls of the positioning cylinder I (16) and positioning cylinder II (17) are provided with positioning grooves (115) that are adapted to the positioning pins (113).

6. The fully automated assembly equipment according to claim 5, characterized in that, When the drive motor Ⅲ (139) drives the connecting conduit Ⅱ (1313) to rotate, the transmission screw Ⅲ (1316) is limited by the sliding ring (1315) and moves axially, driving the pressing plate (1311) to press the elastic buffer pad (7) and the dustproof ring (8).

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