CN111594552A

CN111594552A - Assembling equipment and assembling method for dust cover of miniature bearing

Info

Publication number: CN111594552A
Application number: CN202010334095.6A
Authority: CN
Inventors: 王凡; 聂咸启; 汪平
Original assignee: Huangshan Zhenyi Precision Machinery Co ltd
Current assignee: Huangshan Zhenyi Precision Machinery Co ltd
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2020-08-28

Abstract

The invention relates to a dustproof cover assembling device and a dustproof cover assembling method for a miniature bearing, wherein the assembling device comprises a cover stringing mechanism, a cover placing mechanism, a cover conveying mechanism, a lifting mechanism and a material moving mechanism, and is characterized in that: the hanging rod of string lid mechanism is vertical to be installed and is being put and cover the mechanism, and the inside of putting and covering the mechanism is equipped with and send the apron, send the apron to cover the pole through sending and send the lid cylinder to be connected, and elevating system installs and covers just enough front side top in putting, and elevating system includes lifter, lift cylinder and gets the lid mould, and the lift cylinder is fixed on the support, gets the lid mould and passes through the lifter to be connected in lift cylinder below, moves the material mechanism and includes material pole and material frock that moves, and the head that moves the material frock is equipped with trapezoidal notch. According to the invention, the dustproof cover with the flanging structure and the oblique-angle groove-shaped dustproof groove are adopted, the stamping link in the assembly process is cancelled, the product qualification rate of the miniature bearing can be improved, the production cost is reduced, and each mechanism has higher automation degree, so that the production efficiency is improved.

Description

Assembling equipment and assembling method for dust cover of miniature bearing

Technical Field

The invention belongs to the technical field of bearings, and particularly relates to a dust cover assembling device and a dust cover assembling method for a miniature bearing.

Background

The bearing is an important part for supporting the rotating body, reducing the friction coefficient in the motion process and ensuring the rotation precision in the current mechanical equipment, and the micro bearing is mainly applied to the fields of high rotating speed and low noise, such as micro motors, hard disk motors, laser engraving and the like. Dust and debris contamination is one of the important causes of the micro bearing failure, and in order to ensure the use reliability of the micro bearing, dust covers are usually added on two sides of the micro bearing.

The traditional dust cover is mainly of a curled edge structure, the curled edge of the dust cover needs to be subjected to stamping assembly by using a stamping die at an action part of a stamping cylinder, the assembly process comprises 5 steps of cover feeding, cover taking, cover placing, cover inspection and stamping, and the assembly method has the following problems: on one hand, the punching process requires the cylinder and the punching die to be assembled, so that the process is complex, the production efficiency is not high, and the production cost is high due to the need of special equipment and the use of compressed gas as a punching carrier; on the other hand, due to the groove type precision problem of the bearing dust-proof groove, the assembly qualification rate is low due to factors such as the stamping force, the abrasion degree of a die, the curling arc precision and the like, the influence on the outer diameter deformation is most obvious, and the dust cover is easy to generate a concave or convex phenomenon after being stamped, so that the qualification rate of products is greatly influenced.

The problem that the degree of automation is not high also generally exists in current bearing shield rigging equipment, for example, the bulletin date of the authority is 2019, 6.4.3, in a patent of the bulletin number of CN208929639U, a bearing shield pressure equipment machine is disclosed, including the fixed station, fixed establishment and coupling mechanism, this design is through the fixed block and the fastening pad device of design, the not good fixed problem of dust cover of equidimension has been avoided, through fixed threaded rod and fixed base device, the problem that the pressure equipment quality is influenced in the slope of the fixed pressure equipment board after the machine uses for a long time has been avoided, nevertheless need the manual work to carry out the material loading, get the material operation, degree of automation is low, low in production efficiency.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides the dustproof cover assembling equipment and the dustproof cover assembling method for the miniature bearing, which have the advantages of reasonable structural design, high automation degree, high product qualification rate and high production efficiency.

The technical scheme adopted by the invention for solving the problems is as follows: this miniature bearing's shield rigging equipment, including cluster lid mechanism, put lid mechanism, send lid mechanism, elevating system and move material mechanism, its characterized in that: the string covers the mechanism and includes peg and stopper, the peg is vertical to be installed and to be put covering mechanism, the upper surface of putting covering mechanism is equipped with puts the lid hole, puts the inside of covering mechanism and is equipped with the apron that send of horizontal motion, send to install on the apron and put the lid mould, send the apron to be connected with the lid pole that send of sending covering mechanism, send covering mechanism including sending the lid pole and sending the lid cylinder, elevating system passes through the support mounting and puts the front side top of covering mechanism, and elevating system includes lifter, lift cylinder and gets the lid mould, lift cylinder fixes on the support, gets the lid mould and passes through the lifter and install the below at lift cylinder, it installs in the workstation side to move the material mechanism, moves the material mechanism and includes the material frock that moves of moving pole and a plurality of quantity, the afterbody equidistant installation that moves the material frock moves on the material pole, moves the head of material frock and is equipped with trapezoidal notch. The dustproof cover is strung on the hanging rod, the dustproof cover can fall into the cover placing die through the cover placing hole in sequence and automatically under the action of gravity, the cover sending cylinder controls the cover sending rod to do telescopic motion, the cover sending plate is driven to move back and forth to convey the dustproof cover to the position below the cover taking die of the lifting mechanism one by one, the lifting cylinder controls the cover taking die to move up and down through the lifting rod, when the cover taking die moves down to be in contact with the cover placing die, the dustproof cover can be transferred to the cover taking die, after the cover placing mechanism and the cover sending mechanism reset, the cover taking die moves down again to place the dustproof cover into a dustproof groove of a miniature bearing located on the cover placing station to complete assembly, the material moving mechanism is used for moving the miniature bearing, and the material moving tool is positioned with the miniature bearing through a trapezoidal notch.

Preferably, the middle part of the cover placing die is provided with a stepped hole, and the step height of the stepped hole is the same as the thickness of the dustproof cover. The shoulder hole is used for placing the shield and with get a lid mould cooperation location, just can avoid the shield to cause the hindrance to the motion of sending the apron with the same thickness of the step height of shoulder hole and shield.

Preferably, the end of the cap feeding rod and the top end of the lifting rod are both provided with limit nuts. The limiting nut is used for limiting the maximum moving distance of the cap feeding rod and the maximum descending height of the lifting rod, and the positioning accuracy in the assembling process is improved.

Preferably, the bottom core shaft of the cover taking die is matched with the inner ring hole of the miniature bearing, and the cover taking shaft of the cover taking die is matched with the inner hole of the dust cover. Get the dabber of lid mould through its bottom and the cooperation of miniature bearing's inner circle hole and realize the location to put into miniature bearing's dust-proof tank with the shield accurately, get the hole cooperation of lid axle and shield, make the shield can shift to getting of getting the lid mould from the shoulder hole of putting the lid mould and cover epaxially, and can not take place to drop getting the in-process that the lid mould reciprocated.

Preferably, the material moving rod is connected with the material moving cylinder, the material moving rod and the moving tool perform horizontal translation motion, and each group of execution actions comprises forward movement, right movement, backward movement and left movement resetting. The plurality of movable tools simultaneously execute a group of actions of forward movement, right movement, backward movement and left movement resetting through the material moving rod, can sequentially move the miniature bearing which is not provided with the dust cover to the cover placing station, and simultaneously move out the assembled miniature bearing.

Preferably, the cover feeding cylinder, the lifting cylinder and the material moving cylinder are controlled by a PLC program and driven by electromagnetic valves. Each cylinder is controlled by a PLC program to realize higher automation degree and improve the production efficiency.

Preferably, the size of the opening of the notch of the present invention is larger than the size of the outer diameter of the micro bearing, and the size of the bottom of the notch is smaller than the size of the outer diameter of the micro bearing. When the movable tool moves forwards, the micro bearing can be clamped in the notch, so that the micro bearing can be driven to move synchronously when the movable tool moves rightwards, and the position of the micro bearing is controlled.

Preferably, the outer edge of the dust cover of the invention is formed with a trapezoidal flange, the end of the flange inclines outwards and forms an included angle of 59-61 degrees with the horizontal direction, and the outer side surface of the dust-proof groove of the miniature bearing forms an included angle of 78-80 degrees with the bottom surface thereof. The dustproof cover adopts the flanging structure to replace the traditional flanging structure, the stamping process during the assembly of the dustproof cover is cancelled, the influence of the stamping process on the size precision of the miniature bearing and the appearance of the dustproof cover is avoided, the product percent of pass of the bearing is improved, the assembly flow is reduced, and the production efficiency of the bearing is improved. The dust cover enters the dust-proof groove through inward deformation of the turned-over edge and is firmly abutted to the inclined outer side face of the dust-proof groove under the action of deformation resistance, so that the axial and radial limitation of the dust cover in the dust-proof groove is realized, and the dust cover is prevented from moving or falling off in the dust-proof groove.

A method for assembling a dust cover of a miniature bearing comprises the following specific steps: the method comprises the steps that firstly, dust covers are sequentially stringed on a hanging rod of a stringing cover mechanism, the dust cover at the bottommost end of the hanging rod automatically falls into a stepped hole of a cover placing mold through a cover placing hole, a cover feeding cylinder drives a cover feeding plate to move forwards to the position above a cover placing station, then a lifting cylinder drives the cover taking mold to move downwards to take out the dust cover in the cover placing mold, the dust cover is transferred to a cover taking shaft, the cover feeding mechanism and the lifting mechanism are reset, meanwhile, a material moving mechanism is used for moving a miniature bearing which is not placed in the dust cover to the cover placing station, the lifting cylinder drives the cover taking mold to move downwards again, the cover taking mold is matched with an inner ring hole of the miniature bearing through a mandrel to complete positioning, the dust cover is placed in a dust preventing groove of the miniature bearing, and assembly is completed.

Compared with the prior art, the invention has the following advantages and effects:

(1) the dustproof cover is designed in a flanging structure, the outer side surface of the dustproof groove of the miniature bearing is designed in an oblique angle, a stamping link in the assembling process can be omitted, the influence of the stamping process on the dimensional precision of the miniature bearing and the appearance of the dustproof cover is avoided, the product percent of pass of the miniature bearing can be improved, the production efficiency of the miniature bearing can be improved by reducing the assembling process, the production cost of the miniature bearing can be reduced, and the product competitiveness can be improved.

(2) The air cylinders of the cover feeding mechanism, the lifting mechanism and the material moving mechanism are all controlled by a PLC program and driven by the electromagnetic valve, so that the equipment has higher automation degree, the assembly process does not need manual participation, and the production efficiency is improved.

Drawings

In order to illustrate the embodiments of the present invention or the solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive effort.

Fig. 1 is a schematic front view of an embodiment of the present invention.

Fig. 2 is a left side view structural schematic diagram of the string cover mechanism according to the embodiment of the invention.

Fig. 3 is a schematic top view of the cap placing mechanism and the cap feeding mechanism according to the embodiment of the invention.

Fig. 4 is a schematic front view of the lifting mechanism according to the embodiment of the present invention.

Fig. 5 is a schematic top view of the material moving mechanism according to the embodiment of the present invention.

Fig. 6 is a schematic partial structure diagram of the dust cap and the dust groove according to the embodiment of the invention.

Description of reference numerals: 1. a cover stringing mechanism; 2. a cover placing mechanism; 3. a cap feeding mechanism; 4. a lifting mechanism; 5. a material moving mechanism; 6. a hanging rod; 7. a limiting block; 8. placing a cover hole; 9. sending a cover plate; 10. placing a cover die; 11. a cap feeding rod; 12. a cap feeding cylinder; 13. a support; 14. a lifting rod; 15. a lifting cylinder; 16. taking a cover die; 17. a material moving rod; 18. a material moving tool; 19. a recess; 20. a stepped hole; 21. a dust cover; 22. a limit nut; 23. a mandrel; 24. a micro-bearing; 25. taking the cover shaft; 26. flanging; 27. a dustproof groove.

Detailed Description

The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.

Examples are given.

Referring to fig. 1 to 5, the dust cap assembling apparatus for a micro bearing according to the embodiment of the present invention includes a cap stringing mechanism 1, a cap placing mechanism 2, a cap feeding mechanism 3, a lifting mechanism 4, and a material moving mechanism 5.

The string cover mechanism 1 comprises a hanging rod 6 and a limiting block 7, the hanging rod 6 is vertically arranged on the cover placing mechanism 2, a plurality of dust covers 21 are strung on the hanging rod 6, and the limiting block 7 is arranged on the upper portion of the hanging rod 6. Put and cover mechanism 2 and be squarely, its upper surface is equipped with the circular shape and puts and covers hole 8, inside is equipped with horizontal motion send apron 9, the last surface mounting who sends apron 9 has and puts and covers mould 10, the middle part of putting and covering mould 10 is equipped with shoulder hole 20, during the initial position, shoulder hole 20 is located and puts and covers hole 8 under, and the size of putting and covering hole 8 and shoulder hole 20 all is the same with the external diameter size of shield 21, make shield 21 can fall into shoulder hole 20 in proper order from peg 6 under the action of gravity, the step height of shoulder hole 20 is the same with the thickness of shield 21, can avoid shield 21 to hinder the motion of sending apron 9.

The cap conveying mechanism 3 of the embodiment of the invention is connected with the cap conveying plate 9 through the cap conveying rod 11, the cap conveying mechanism 3 comprises the cap conveying rod 11 and the cap conveying cylinder 12, and the cap conveying cylinder 12 is used for controlling the cap conveying rod 11 to do telescopic motion so that the cap conveying plate 9 conveys the dust caps 21 to the position above the cap placing station one by one.

The lifting mechanism 4 of the embodiment of the invention is arranged above the front side of the cover placing mechanism 2 through the support 13, the lifting mechanism 4 comprises a lifting rod 14, a lifting cylinder 15 and a cover taking mold 16, wherein the lifting cylinder 15 is fixed on the support 13, the cover taking mold 16 is arranged below the lifting cylinder 15 through the lifting rod 14, the bottom of the cover taking mold 16 is a mandrel 23, the upper part of the mandrel 23 is a cover taking shaft 25, when the lifting cylinder 15 controls the cover taking mold 16 to move downwards, the cover taking mold 16 is contacted with the extending cover placing mold 10, and the mandrel 23 and the cover taking shaft 25 can extend into the stepped hole 20 of the cover placing mold 10. In addition, the mandrel 23 is matched with the inner ring hole of the micro bearing 24 in size to realize the positioning with the micro bearing 24, so that the dust cap 21 can be accurately placed in the dust-proof groove 27 of the micro bearing 24, the cap taking shaft 25 is matched with the inner hole of the dust cap 21 in size, so that the dust cap 21 can be transferred to the cap taking shaft 25 from the stepped hole 20 of the cap placing die 10, and the dust cap cannot fall off in the process of moving the cap taking die 16 up and down.

The material moving mechanism 5 is arranged on the side face of a workbench, the material moving mechanism 5 comprises a material moving rod 17 and a plurality of material moving tools 18, the material moving rod is connected with a material moving cylinder, the tail portions of the material moving tools 18 are arranged on the material moving rod 17 at equal intervals, trapezoidal notches 19 are formed in the head portions of the material moving tools 18, the notches 10 are used for achieving positioning with micro bearings 24, the opening size of each notch 19 is larger than the outer diameter size of each micro bearing 24, and the bottom size of each notch 19 is smaller than the outer diameter size of each micro bearing. Because the material moving mechanism 5 performs the translation motion in the horizontal direction, each group of execution actions comprises forward movement, right movement, backward movement and left movement resetting, when the material moving mechanism 5 moves forward, the material moving tool 18 can clamp the micro bearing 24 in the notch 19, so that when the material moving mechanism 5 moves rightward, the micro bearing 24 can be driven to move synchronously, and the position of the micro bearing 24 is controlled.

The limiting nuts 22 are mounted at the tail end of the cap feeding rod 11 and the top end of the lifting rod 14, and the limiting nuts 22 are used for limiting the maximum moving distance of the cap feeding rod 11 and the maximum descending height of the lifting rod 14, so that the positioning accuracy in the assembling process is improved. The cover feeding cylinder 12, the lifting cylinder 15 and the material moving cylinder are controlled by a PLC program and driven by electromagnetic valves to realize higher automation degree and improve production efficiency.

Referring to fig. 6, the outer edge of the dust cap 21 of the embodiment of the present invention is formed with a trapezoidal flange 26, the end of the flange 26 is inclined outward, and forms an included angle of 59 to 61 ° with the horizontal direction, and the outer side surface of the dust-proof groove 27 of the micro bearing 24 forms an included angle of 78 to 80 ° with the bottom surface thereof. The dust cover 21 adopts a flanging structure to replace a traditional flanging structure, a stamping process during assembly of the dust cover 21 is cancelled, the influence of the stamping process on the size precision of the miniature bearing 24 and the appearance of the dust cover 21 is avoided, the product qualification rate of the miniature bearing is improved, the assembly flow is reduced, and the production efficiency of the miniature bearing is improved. In addition, the dust cover 21 enters the dust-proof groove 27 through inward deformation of the turned-over edge 26 and is firmly abutted to the inclined outer side face of the dust-proof groove 27 under the action of deformation resistance, so that the axial and radial limiting of the dust cover 21 in the dust-proof groove 27 is realized, and the dust cover 21 is prevented from moving or falling off in the dust-proof groove 27.

The method for assembling the dust cover of the miniature bearing comprises the following specific steps: firstly, the dust caps 21 are sequentially stringed on the hanging rod 6 of the stringing cover mechanism 1, the dust cap 21 at the bottommost end of the hanging rod 6 automatically falls into the stepped hole 20 of the cover placing mold 10 through the cover placing hole 8, the cover feeding cylinder 12 works to drive the cover feeding plate 9 to move forwards to the position above the cover placing station, then the lifting cylinder 15 works to drive the cover taking mold 16 to move downwards to take out the dust cap 21 in the cover placing mold 10, the dust cap 21 is transferred to the cover taking shaft 25, then the cover feeding mechanism 3 and the lifting mechanism 4 are reset, meanwhile, the micro bearing 24 which is not put in the dust cap is moved to the cover placing station through the material moving mechanism 5, the lifting cylinder 15 works again to drive the cover taking mold 16 to move downwards, the cover taking mold 16 is matched with the inner ring hole of the micro bearing 24 through the core shaft 23 to complete positioning, and the dust cap 21 is put into the dust preventing groove 27 of the micro bearing 24 to complete assembly.

In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an illustration of the structure of the present invention. Equivalent or simple changes in the structure, characteristics and principles of the invention are included in the protection scope of the patent. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a shield rigging equipment of miniature bearing, includes cluster lid mechanism (1), puts lid mechanism (2), send lid mechanism (3), elevating system (4) and move material mechanism (5), its characterized in that: the cap stringing mechanism (1) comprises a hanging rod (6) and a limiting block (7), the hanging rod (6) is vertically installed on a cap placing mechanism (2), a cap placing hole (8) is formed in the upper surface of the cap placing mechanism (2), a horizontally moving cap feeding plate (9) is arranged in the cap placing mechanism (2), a cap placing die (10) is installed on the cap feeding plate (9), the cap feeding plate (9) is connected with a cap feeding rod (11) of the cap feeding mechanism (3), the cap feeding mechanism (3) comprises a cap feeding rod (11) and a cap feeding cylinder (12), the lifting mechanism (4) is installed above the front side of the cap placing mechanism (2) through a support (13), the lifting mechanism (4) comprises a lifting rod (14), a lifting cylinder (15) and a cap taking die (16), the lifting cylinder (15) is fixed on the support (13), and the cap taking die (16) is installed below the lifting cylinder (15) through the lifting rod (14), move material mechanism (5) and install in the workstation side, move material mechanism (5) including moving material pole (17) and a plurality of quantity move material frock (18), the afterbody of moving material frock (18) is equidistant to be installed on moving material pole (17), and the head of moving material frock (18) is equipped with trapezoidal notch (19).

2. The dust cap assembling apparatus for a micro bearing according to claim 1, wherein: the middle part of the cover placing die (10) is provided with a stepped hole (20), and the step height of the stepped hole (20) is the same as the thickness of the dust cover (21).

3. The dust cap assembling apparatus for a micro bearing according to claim 1, wherein: and the tail end of the cap conveying rod (11) and the top end of the lifting rod (14) are provided with limiting nuts (22).

4. The dust cap assembling apparatus for a micro bearing according to claim 1, wherein: and a bottom mandrel (23) of the cover taking die (16) is matched with an inner ring hole of the miniature bearing (24), and a cover taking shaft (25) of the cover taking die (16) is matched with an inner hole of the dustproof cover (21).

5. The dust cap assembling apparatus for a micro bearing according to claim 1, wherein: the material moving rod (17) is connected with the material moving cylinder, the material moving rod (17) and the moving tool (18) perform horizontal translation movement, and each group of execution actions comprises forward movement, right movement, backward movement and left movement resetting.

6. The dust cap assembling apparatus for a micro bearing according to claim 1, wherein: the cover feeding cylinder (12), the lifting cylinder (15) and the material moving cylinder are controlled by a PLC program and driven by electromagnetic valves.

7. The dust cap assembling apparatus for a micro bearing according to claim 1, wherein: the opening size of the notch (19) is larger than the outer diameter size of the micro bearing (24), and the bottom size of the notch (19) is smaller than the outer diameter size of the micro bearing (24).

8. The dust cap assembling apparatus for a micro bearing according to claim 1, wherein: the outer edge of the dustproof cover (21) is provided with a trapezoidal flanging (26), the tail end of the flanging (26) inclines outwards and forms an included angle of 59-61 degrees with the horizontal direction, and the outer side face of the dustproof groove (27) of the miniature bearing (24) forms an included angle of 78-80 degrees with the bottom face of the dustproof groove.

9. The assembling method of the dust cover of the miniature bearing is characterized by comprising the following steps: the dust cap assembling apparatus using the micro-bearing according to any one of claims 1 to 8, comprising the steps of: firstly, sequentially stringing a dustproof cover (21) on a hanging rod (6) of a stringing cover mechanism (1), automatically dropping the dustproof cover (21) at the bottommost end of the hanging rod (6) into a stepped hole (20) of a cover placing mold (10) through a cover placing hole (8), driving a cover sending cylinder (12) to work to drive a cover sending plate (9) to move forwards to the position above the cover placing station, then driving a cover taking mold (16) to move downwards by the work of a lifting cylinder (15) to take out the dustproof cover (21) in the cover placing mold (10), transferring the dustproof cover (21) to a cover taking shaft (25), resetting the cover sending mechanism (3) and the lifting mechanism (4), simultaneously moving a miniature bearing (24) which is not placed in the dustproof cover to the cover placing station by using a material moving mechanism (5), driving the cover taking mold (16) to move downwards by the work of the lifting cylinder (15) again to enable the cover taking mold (16) to be matched with an inner ring hole of the miniature bearing (24) through a cover taking mechanism (23) to complete positioning, and the dustproof cover (21) is placed in a dustproof groove (27) of the miniature bearing (24) to finish the assembly.