Assembly device and assembly method of bearing and retaining ring

Abstract

The present application discloses an assembly device and an assembly method for a bearing and a retaining ring, which relates to the field of manufacturing. The assembly device includes a pre-tightening assembly, and the retaining ring to be assembled is pre-tightened by the pre-tightening mechanism of the pre-tightening assembly to avoid problems such as screw thread damage caused by direct tightening with high torque. At the same time, the pre-tightening mechanism of the present application is designed with a motion control component to avoid excessive downward movement of the retaining ring to damage the product and thread damage during the retaining ring recognition process, and the overall structure is more flexible. The assembly method of the present application has high working efficiency and good overall coordination.

Description

Technical Field

[0001] The present application relates to the field of manufacturing, and in particular to an assembly device and an assembly method for a bearing and a retaining ring. Background Art

[0002] In the existing production of gear set bearing retaining ring assembly, the bearing and retaining ring need to be threaded together for assembly. The problems existing in the prior art are: (1) multiple devices are required to be carried out separately, including glue coating equipment, tightening equipment and testing equipment, etc., and each device is independent of each other and lacks coordination, resulting in low production efficiency and high cost; (2) when the retaining ring is assembled with the bearing thread, a large torque is used for direct tightening, which may damage the thread and cause product damage; (3) when the retaining ring and the bearing are assembled in the existing equipment, the retaining ring lacks a movable margin, resulting in the retaining ring hitting the product during the thread recognition process; (4) there is a lack of feedback on the position of the retaining ring screwed into the bearing, and the downward displacement of the retaining ring (i.e. the displacement of the retaining ring thread downward) cannot be accurately controlled, resulting in problems such as over-tightening. Summary of the invention

[0003] The embodiments of the present application provide an assembly device and an assembly method for a bearing and a retaining ring, which can avoid thread damage during the retaining ring thread recognition process and control the downward movement of the retaining ring.

[0004] In the first aspect, the present application provides an assembly device for bearings and retaining rings, characterized in that it includes: a turntable, which is rotatably arranged at a predetermined position, and the turntable is used for the circulation of bearings and retaining rings to be assembled; the pre-tightening assembly includes a pre-tightening mechanism; the pre-tightening mechanism includes a first Z-axis motion component, a first mounting plate, a rotation drive component, a first clamp and a motion control component; the first Z-axis motion component is located on one side of the turntable; the first mounting plate is arranged on the first Z-axis motion component, and the first Z-axis motion component can drive the first mounting plate to move in the height direction; the rotation drive component is slidably connected to the first mounting plate in the height direction; the first clamp is arranged on the output end of the rotation drive component, and the first clamp is used Clamp the retaining ring to be assembled, and drive the first clamping jaw and the retaining ring to be assembled to rotate through the rotary driving component; the motion control component includes a block, a movable plate and a first photoelectric sensing component; the block is arranged on the first mounting plate, and the block is provided with two stop surfaces for limiting the movable plate at intervals along the height direction; one end of the movable plate is arranged on the rotary driving component, and the movable plate is located between the two stop surfaces; a first block sheet for cooperating with the first photoelectric sensing component to trigger the first photoelectric sensing component to generate a signal is arranged on the movable plate; the first photoelectric sensing component is arranged on the block or the first mounting plate, and is located below the movable plate; the first photoelectric sensing component is communicatively connected with the first Z-axis motion component and the rotary driving component.

[0005] In a second aspect, the present application provides a method for assembling a bearing and a retaining ring, using an assembly device for the bearing and the retaining ring. The assembly method comprises: pre-tightening the retaining ring to be assembled on the bearing:

[0006] The first clamping jaw clamps the retaining ring to be assembled and moves to the top of the bearing, and the first Z-axis motion component drives the first clamping jaw and the retaining ring to move downward. After the retaining ring hits the bearing, the first Z-axis motion component continues to drive the first mounting plate to move downward at a uniform speed, and the moving plate moves upward relative to the first mounting plate. When the first baffle on the moving plate is disengaged from the first photoelectric sensing element, the first photoelectric sensing element generates a first feedback signal and transmits it to the first Z-axis motion component and the first servo motor. After receiving the first feedback signal, the first Z-axis motion component continues to drive the first mounting plate to move downward for t seconds and then stops;

[0007] The first servo motor starts to drive the first clamping jaw and the retaining ring to rotate t seconds after receiving the first feedback signal. The retaining ring is screwed into the bearing through the thread. At the same time, the movable plate and the first clamping jaw also move downward with the retaining ring. When the first baffle and the first photoelectric sensing element cooperate again, the first photoelectric sensing element generates a second feedback signal and transmits it to the first Z-axis motion assembly and the first servo motor. The first servo motor stops rotating and the first clamping jaw releases the retaining ring. The first Z-axis motion assembly drives the first mounting plate, the movable plate and the first clamping jaw to reset upward.

[0008] The bearing and retaining ring assembly equipment and assembly method of the present application have at least the following beneficial effects:

[0009] The assembly equipment of the present application includes a pre-tightening assembly, and the retaining ring to be assembled is pre-tightened by the pre-tightening mechanism of the pre-tightening assembly to avoid problems such as screw thread damage caused by directly tightening with high torque. At the same time, the pre-tightening mechanism of the present application is designed with a motion control component, and the motion control component includes a moving plate, a stop block and a first photoelectric sensing component. In the initial state, due to the action of gravity, the moving plate and a stop surface under the stop block are in contact with each other. When the first Z-axis motion component drives the first clamping jaw and the retaining ring to move downward and hit the bearing, as the first Z-axis motion component continues to drive the first mounting plate downward, the bearing will move the first clamping jaw and The movable plate is pushed upward, so that the first baffle on the movable plate disengages from the cooperation with the first photoelectric sensing element to generate a feedback signal. The feedback signal is transmitted to the first Z-axis motion component to stop moving downward, which can prevent the retaining ring from moving downward excessively and damaging the product. During the downward threaded assembly of the retaining ring, the first baffle and the first photoelectric sensing element will cooperate again. At this time, stop tightening and control the displacement of the pre-tightening. On the other hand, since the rotary drive assembly and the first mounting plate are connected in an up and down sliding manner, the first clamp and the retaining ring have a certain up and down floating margin, which can prevent thread damage during the retaining ring recognition process, and the overall structure has better flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0011] Figure 1 It is a schematic diagram of the structure of the assembly equipment of this application;

[0012] Figure 2 yes Figure 1 A top view of

[0013] Figure 3 It is a partial structural schematic diagram of the installation mechanism, the lifting and rotating mechanism and the turntable in this application;

[0014] Figure 4 yes Figure 3 A cross-sectional view of the mounting mechanism (shown in the figure as assembled retaining rings and bearings);

[0015] Figure 5 It is a vertical cross-sectional view of the mounting mechanism, the lifting and rotating mechanism and the turntable in the present application;

[0016] Figure 6 yes Figure 3 Structural diagram of the middle lifting and rotating mechanism;

[0017] Figure 7 It is a schematic diagram of the structure of the turntable, visual inspection assembly and bearing gluing assembly;

[0018] Figure 8 yes Figure 7 The enlarged view of point A in the middle;

[0019] Fig. 9 is a schematic diagram of the structure of the pre-tightening assembly in this application;

[0020] Fig.10 yes Fig. 9 A partial structural diagram of the pre-tightening assembly;

[0021] Fig.11 yes Fig.10 The enlarged view of point B in the middle;

[0022] Fig.12 yes Fig.10 A schematic diagram from another angle;

[0023] Fig.13 yes Fig.12 Enlarged view of point C in the middle;

[0024] Fig.14 It is a schematic diagram of the retaining ring gluing mechanism in this application;

[0025] Fig.15 is a schematic diagram of the structure of the tightening assembly in this application;

[0026] Fig.16 It is a schematic diagram of the structure of the assembly detection assembly in this application;

[0027] Fig.17 is a schematic front view of the assembly inspection assembly in this application;

[0028] Description of the reference numerals is as follows:

[0029] 10. Workbench;

[0030] 20, turntable; 20a, loading and unloading station; 20b, visual inspection station; 20c, gluing station; 20d, pre-tightening station; 20e, tightening station; 20f, assembly inspection station;

[0031] 21. mounting mechanism; 211. first bottom plate; 211a. positioning groove; 212. second bottom plate; 213. center mounting plate; 2131. first positioning pin; 2132. second positioning pin; 214. first guide column;

[0032] 22, lifting and rotating mechanism; 221, lifting platform; 222, rotating platform; 222a, positioning hole; 223, lifting and telescopic member; 224, rotating driving member; 225, mounting platform; 226, follower platform; 227, guide rod; 228, transmission rod;

[0033] 30. Visual inspection assembly;

[0034] 40. Bearing glue coating assembly; 41. Fourth transverse movement mechanism; 42. First stand; 43. Fourth Z-axis motion assembly; 44. First glue head support plate; 45. First glue spray nozzle;

[0035] 50. Pre-tighten the assembly;

[0036] 51. Pre-tightening mechanism; 511. First Z-axis motion assembly; 512. First mounting plate; 513. Rotation drive assembly; 5131. Connecting plate; 5132. First servo motor; 5133. Speed ​​reducer; 5134. Torque sensor; 5135. Pneumatic slip ring; 5136. Vertical slide mechanism; 514. First clamping jaw; 515. Motion control assembly; 5151. Block; 51511. Stop surface; 5152. Moving plate; 51521. First baffle; 51522. Second baffle; 5153. First photoelectric sensing element; 5154. Second photoelectric sensing element;

[0037] 52. The first transverse movement mechanism;

[0038] 53, retaining ring glue coating mechanism; 531, fifth lateral movement mechanism; 532, second stand; 533, sixth Z-axis motion assembly; 534, second glue head support plate; 535, second glue spray nozzle; 536, glue coating positioning plate; 537, glue coating motor;

[0039] 54. Grasping mechanism; 541. Fifth Z-axis motion assembly; 542. Second gripper;

[0040] 55. Temporary storage station for retaining rings;

[0041] 60. Tightening assembly; 61. Second traverse mechanism; 62. Second mounting plate; 63. Second Z-axis motion assembly; 64. Third mounting plate; 65. Tightening gun; 66. Tightening sleeve;

[0042] 70. Assembly detection assembly; 71. Third transverse movement mechanism; 72. Fourth mounting plate; 73. Horizontal slide rail mechanism; 74. Fifth mounting plate; 75. Third Z-axis motion assembly; 76. Test bench; 77. Pneumatic finger; 78. Reference block; 79. Telescopic displacement detection member; 710. Floating mechanism; 7101. Second guide column; 7102. Transition block; 7103. Elastic member;

[0043] 80. Bearings;

[0044] 90. Retaining ring. DETAILED DESCRIPTION

[0045] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0047] This embodiment discloses an assembly device and an assembly method for a bearing and a retaining ring. First, the assembly device of this embodiment is described.

[0048] like Figure 1 and Figure 2 As shown, the assembly equipment of this embodiment includes a workbench 10, a turntable 20, a visual inspection assembly 30, a bearing glue coating assembly 40, a pre-tightening assembly 50, a tightening assembly 60 and an assembly inspection assembly 70.

[0049] like Figure 2 As shown, the turntable 20 is horizontally rotatably arranged on the workbench 10. The turntable 20 can be driven to rotate by existing equipment. Specifically, the turntable 20 can rotate around its axis.

[0050] like Figure 2 As shown, the turntable 20 is provided with loading and unloading stations 20a, visual inspection stations 20b, gluing stations 20c, pre-tightening stations 20d, tightening stations 20e, assembly inspection stations 20f and loading and unloading stations 20a in sequence along its circumference; the bearing 80 to be assembled is loaded from the loading and unloading stations 20a, and the turntable 20 rotates to realize the circulation of the bearing 80 in each station for processing until the unloading is completed from the loading and unloading stations 20a. In this embodiment, corresponding functional equipment is provided on one side of each station. By integrating various functional equipment around the turntable 20, this embodiment can solve the problem of low efficiency caused by the independent operation of each device, and can also reduce the occupation of the site, improve the level of intelligence, and facilitate the control of the production rhythm on site.

[0051] like Figure 3 and Figure 4As shown, each workstation is provided with a mounting mechanism 21 at a corresponding position on the turntable 20, and the mounting mechanism 21 is used to mount the bearing 80 to be assembled, so as to facilitate the stable circulation of the bearing 80. The mounting mechanism 21 includes a first bottom plate 211, a second bottom plate 212 and a center mounting plate 213; the first bottom plate 211 is fixedly arranged on the upper surface of the turntable 20, the second bottom plate 212 is stacked above the first bottom plate 211, the center mounting plate 213 and the second bottom plate 212 are coaxially sleeved, and the center mounting plate 213 and the second bottom plate 212 are rotatably connected by existing structures such as ball bearings, so that the center mounting plate 213 can rotate relative to the second bottom plate 212 in the horizontal circumferential direction, and a mounting hole is provided in the middle of the center mounting plate 213, and the bearing 80 to be assembled is placed in the mounting hole;

[0052] The first bottom plate 211 and the second bottom plate 212 are connected by a first guide column 214 (such as Figure 5 The upper end of the first guide post 214 is fixedly connected to the second bottom plate 212, and the first guide post 214 slides downward to penetrate the first bottom plate 211, so that the second bottom plate 212 can only slide up and down relative to the first bottom plate 211;

[0053] Among them, Figure 5 and Figure 6 As shown, a lifting and rotating mechanism 22 is provided under the turntable 20. The lifting and rotating mechanism 22 is used to lift the second base plate 212 upward and drive the center mounting plate 213 and the bearing 80 to rotate. In the present embodiment, a lifting and rotating mechanism 22 is provided directly below the mounting mechanisms 21 of the visual inspection station 20b and the gluing station 20c. Of course, in some special cases, the mounting mechanisms 21 and the lifting and rotating mechanisms 22 can also be provided one by one.

[0054] like Figure 5 and Figure 6As shown, the lifting and rotating mechanism 22 includes a lifting platform 221, a rotating platform 222, a lifting and telescopic member 223, a rotating driving member 224, a mounting platform 225 and a follower platform 226; the mounting platform 225 is fixedly arranged on the upper surface of the workbench 10, and a guide rod 227 that slides up and down and penetrates the mounting platform 225 is arranged on the mounting platform 225, the upper end of the guide rod 227 is connected to the lower surface of the lifting platform 221, and the lower end of the guide rod 227 is connected to the follower platform 226; the lifting and telescopic member 223 (for example, a telescopic cylinder) The lifting platform 221 is coaxially arranged with the second bottom plate 212, and the lifting platform 221 is located below the second bottom plate 212. During the lifting process of the lifting platform 221, the upper surface of the lifting platform 221 can be aligned with the second bottom plate 212. The lower surface of the bottom plate 212 is fitted against each other and lifts it upward; the rotating platform 222 is coaxially arranged with the lifting platform 221, and the upper surface of the lifting platform 221 is recessed downward to form a mounting groove, and the rotating platform 222 is rotatably arranged in the mounting groove, that is, the rotating platform 222 can rotate around its axis; the upper surface of the rotating platform 222 is lower than or flush with the upper surface of the lifting platform 221, and at least two positioning holes 222a are arranged on the rotating platform 222, and the lower surface of the central mounting plate 213 is provided with a first downwardly extending The positioning pin 2131, the first positioning pin 2131 and the positioning hole 222a are arranged in a one-to-one correspondence, and the first positioning pin 2131 and the positioning hole 222a can be inserted together along the height direction to achieve positioning; the rotating drive member 224 can be a second servo motor, etc. The rotating drive member 224 is connected to the follower table 226, and the output end of the rotating drive member 224 is coaxially connected to the rotating table 222 through the transmission rod 228, wherein the transmission rod 228 passes through the lifting platform 221 and is connected to the rotating table 222.

[0055] In this embodiment, preferably, Figure 3 As shown, two symmetrical positioning grooves 211a are provided on the first base plate 211, and second positioning pins 2132 corresponding to the positioning grooves 211a are provided on the side walls of the center mounting plate 213. The second positioning pins 2132 can be disengaged from the positioning grooves 211a upward or placed downward into the positioning grooves 211a. When the second positioning pins 2132 are placed in the positioning grooves 211a, the horizontal rotation of the center mounting plate 213 can be limited, thereby realizing the rotational positioning of the center mounting plate 213.

[0056] Among them, Figure 5As shown, the turntable 20, the first bottom plate 211 and the second bottom plate 212 are all provided with hollow holes for exposing the central mounting plate 213 from the bottom of the turntable, and at least a portion of the second bottom plate 212 is exposed in the hollow hole of the first bottom plate 211 (to facilitate the lifting platform 221 to lift it upward).

[0057] The specific working principle is: when the lifting telescopic member 223 contracts, the lifting platform 221 moves upward under the drive of the follower platform 226, and the lifting platform 221 passes through the hollow holes on the turntable 20 and the hollow holes on the first bottom plate 211 in sequence. The upper surface of the lifting platform 221 gradually presses upward against the part of the second bottom plate 212 exposed in the hollow holes, and lifts the second bottom plate 212 upward, so that the second bottom plate 212, the center mounting plate 213 and the bearing 80 to be assembled move upward together, and the second positioning pin 2132 on the center mounting plate 213 gradually disengages from the positioning groove 211a upward, releasing the rotation freedom of the center mounting plate 213. At the same time, on the lifting platform 2 During the upward movement of 21, the positioning hole 222a on the rotating table 222 is plugged into the first positioning pin 2131 under the center mounting plate 213 to achieve positioning, and then the rotating driving member 224 drives the rotating table 222 to rotate relative to the lifting table 221. Since the rotating table 222 and the center mounting plate 213 are plugged together through the first positioning pin 2131 and the positioning hole 222a, the rotating table 222 can drive the center mounting plate 213 and the bearing 80 to be assembled to rotate together. The rotation of the bearing 80 can facilitate the visual inspection of the visual inspection assembly 30 or facilitate the bearing gluing assembly 40 to evenly gluing it circumferentially.

[0058] Regarding the cooperation between the installation mechanism 21 and the lifting and rotating mechanism 22 in this embodiment, it should be noted that due to the rotation accuracy and processing accuracy of the turntable 20, it is impossible to achieve accurate positioning when the turntable 20 rotates. After the installation mechanism 21 of this embodiment rotates to the corresponding workstation, the lifting and rotating mechanism 22 lifts up the second bottom plate 212 and the center installation plate 213 of the installation mechanism 21 and positions them through the first positioning pin 2131 and the positioning hole 222a. The second bottom plate 212 and the center installation plate 213 are temporarily separated from the first bottom plate 211, and the positioning reference of each workstation is on the lifting of its own workstation. This structure increases the accuracy of repeated positioning, reduces the difficulty of assembly and processing, reduces the occurrence of production defects, and makes model change simpler, which is convenient for later equipment upgrades and the addition of new products. On the other hand, corresponding lifting and rotating mechanisms 22 are provided below the visual inspection station 20b and the gluing station 20c in this embodiment. When performing visual inspection, the bearing 80 can be driven by the lifting and rotating mechanism 22 to rotate, which makes it convenient to observe from all angles whether the bearing 80 to be assembled has any abnormalities. When gluing, the bearing 80 can be evenly coated with glue around the circumference, thereby improving the quality of assembly.

[0059] like Figure 7 and Figure 8 As shown, the visual inspection assembly 30 is arranged on the horizontal side of the visual inspection station 20b and is located on one side of the turntable 20. The visual inspection assembly 30 can automatically detect whether the incoming material has dirt or other appearance defects. If there is a defect, the subsequent station will no longer process the product, and the product will be transferred to the loading and unloading station 20a for discharge. The visual inspection assembly 30 of this embodiment can refer to the existing visual inspection system, which will not be repeated here.

[0060] like Figure 7 and Figure 8 As shown, the bearing glue coating assembly 40 is arranged on the horizontal side of the glue coating station 20c and is located on one side of the turntable 20. The bearing glue coating assembly 40 is used to glue the bearing 80 to be assembled. The bearing gluing assembly 40 includes a fourth transverse movement mechanism 41, a first vertical frame 42, a fourth Z-axis motion component 43, a first glue head support plate 44 and a first glue spray nozzle 45; the fourth transverse movement mechanism 41 is horizontally arranged on the workbench 10, the first vertical frame 42 is arranged on the fourth transverse movement mechanism 41, the fourth transverse movement mechanism 41 can drive the first vertical frame 42 to move in the horizontal direction, and the movement direction of the first vertical frame 42 is configured to be horizontally toward the gluing station 20c or away from the gluing station 20c; the fourth Z-axis motion component 43 is arranged on the first vertical frame 42, and the first glue head support plate 44 is arranged on the fourth Z-axis motion component 43. The fourth Z-axis motion component 43 can drive the first glue head support plate 44 to move up and down to adjust the height position of the first glue spray nozzle 45; the first glue spray nozzle 45 is arranged on the first glue head support plate 44, and the first glue spray nozzle 45 is used to spray glue to the bearing 80 to be assembled.

[0061] like Fig. 9 As shown, the pre-tightening assembly 50 is arranged at one side of the pre-tightening station 20d and located at one side of the turntable 20. The pre-tightening assembly 50 is used to pre-tighten the retaining ring 90 to be assembled on the bearing 80. The pre-tightening assembly 50 includes a pre-tightening mechanism 51, a first lateral movement mechanism 52, a retaining ring glue coating mechanism 53 and a grabbing mechanism 54;

[0062] like Fig. 9As shown, the first transverse movement mechanism 52 is arranged on the workbench 10, and the pre-tightening mechanism 51 is arranged on the first transverse movement mechanism 52. The pre-tightening mechanism 51 can be driven to move in the first predetermined horizontal direction by the first transverse movement mechanism 52, and the first predetermined horizontal direction is configured to be horizontally facing the pre-tightening station 20d. Along the first predetermined horizontal direction, a temporary storage station 55 for retaining rings is arranged on the side of the pre-tightening mechanism 51 away from the turntable 20. The grasping mechanism 54 arranged on the pre-tightening mechanism 51 can move horizontally with the pre-tightening mechanism 51, and grasp the retaining ring 90 to be assembled to the retaining ring gluing mechanism 53 for gluing. After the gluing is completed, the retaining ring 90 is clamped by the pre-tightening mechanism 51 to the top of the bearing 80 of the pre-tightening station 20d, and pre-tightened assembly is performed.

[0063] The pre-tightening mechanism 51 includes a first Z-axis motion assembly 511, a first mounting plate 512, a rotation drive assembly 513, a first clamping jaw 514 and a motion control assembly 515;

[0064] like Figures 10 to 13 As shown, the first Z-axis motion component 511 is arranged on the first transverse movement mechanism 52, and the first Z-axis motion component 511 is driven to move in the first predetermined horizontal direction by the first transverse movement mechanism 52; the first mounting plate 512 is arranged on the first Z-axis motion component 511, and the first Z-axis motion component 511 can drive the first mounting plate 512 to move in the height direction; the rotation drive component 513 is arranged on the first mounting plate 512, wherein a vertical slide rail mechanism 5136 is connected between the rotation drive component 513 and the first mounting plate 512, and the vertical slide rail mechanism 5136 can realize the relative sliding of the rotation drive component 513 and the first mounting plate 512 in the height direction, and the first clamping jaw 514 is arranged on the output end of the rotation drive component 513, and the first clamping jaw 514 is driven to rotate horizontally by the rotation drive component 513, and then the retaining ring 90 to be assembled is screwed into the bearing 80;

[0065] like Fig.11As shown, the motion control component 515 includes a stopper 5151, a moving plate 5152 and a first photoelectric sensing element 5153; the stopper 5151 is fixedly arranged on the side wall of the first mounting plate 512, and an inner groove is arranged on the stopper 5151, and an inner wall of the inner groove is provided with upper and lower stop surfaces 51511 (horizontal surfaces), and the two stop surfaces 51511 are spaced a certain distance apart; one end of the moving plate 5152 is connected to the rotation driving component 513 (specifically, the connecting plate 5131 of the rotation driving component), the moving plate 5152 is horizontally arranged, and the moving plate 5152 passes through the inner groove in the horizontal direction. From a horizontal perspective, the moving plate 5152 is located between the upper and lower stop surfaces 51511, and the two stop surfaces 51511 are used to control the moving plate 5152. The up and down displacement of the plate 5152 is limited, thereby limiting the up and down position of the rotation drive component 513; the first photoelectric sensing element 5153 is arranged on the stop block 5151 or the first mounting plate 512, and the first photoelectric sensing element 5153 is located on the side of the inner groove away from the rotation drive component 513. A first baffle 51521 is arranged at the end position of the movable plate 5152, and the first baffle 51521 can cooperate with the first photoelectric sensing element 5153. When the first baffle 51521 blocks the first photoelectric sensing element 5153, the first photoelectric sensing element 5153 generates a second feedback signal. When the first baffle 51521 moves upward out of the signal range of the first photoelectric sensing element 5153, the first photoelectric sensing element generates a first feedback signal.

[0066] The working principle of the motion control component 515 is as follows: when the first transverse movement mechanism 52 drives the pre-tightening mechanism 51 which has clamped the retaining ring 90 to the top of the pre-tightening station 20d, in the initial state, due to the effect of gravity, the rotation drive component 513 and the moving plate 5152 have a tendency to sag, so in the initial state, the lower surface of the moving plate 5152 is in contact with a stop surface 51511 located below, and at this time, the first baffle 51521 covers the first photoelectric sensor 5153, and then the first Z-axis motion component 511 drives the first Z-axis motion component 513 to rotate. The first mounting plate 512, the rotation drive assembly 513, the first clamping claw 514 and the retaining ring 90 are moved downward. After the retaining ring 90 hits the bearing 80, the rotation drive assembly 513 and the moving plate 5152 are supported. The first mounting plate 512, the rotation drive assembly 513 and the moving plate 5152 move relative to each other in the height direction, so that the first baffle 51521 is out of the signal range of the first photoelectric sensor 5153. At this time, the first photoelectric sensor 5153 generates a first feedback signal, which is directly or indirectly transmitted to the first Z-axis motion sensor 5153. The first Z-axis motion component 511 continues to move downward for t seconds after receiving the first feedback signal and then stops (the specific value can be set according to the situation, such as 0.5 seconds, 1 second, 2 seconds, etc.); on the other hand, the first feedback signal is also directly or indirectly transmitted to the rotation drive component 513 (specifically, it is transmitted to the first servo motor 5132 of the rotation drive component), and the rotation drive component 513 starts to drive the first clamping jaw 514 and the retaining ring 90 to rotate t seconds after receiving the first feedback signal, so that the retaining ring 90 is screwed into the bearing 80, and then the retaining ring 90 is screwed into the bearing 80. During the insertion process, the movable plate 5152 gradually moves downward following the retaining ring 90, and the first blocking piece 51521 blocks the first photoelectric sensing element 5153 again and generates a second feedback signal, which is directly or indirectly transmitted to the first Z-axis motion component 511, the rotation drive component 513 and the first clamping jaw 514, and the rotation drive component 513 (specifically the first servo motor 5132) immediately stops working, and the first clamping jaw 514 releases the retaining ring 90. At the same time, the first Z-axis motion component 511 immediately drives the first clamping jaw 514 to move up and reset.

[0067] like Fig.11 and Fig.13As shown, in this embodiment, the motion control component 515 also includes a second photoelectric sensor 5154. The second photoelectric sensor 5154 and the first photoelectric sensor 5153 are respectively arranged on the upper and lower sides of the block 5151. One end of the movable plate 5152 is provided with a second baffle 51522 that cooperates with the second photoelectric sensor 5154. When the second baffle 51522 blocks the second photoelectric sensor 5154 upward or disengages from the second photoelectric sensor 5154 downward, a signal can also be generated. The purpose of providing the second photoelectric sensor 5154 in this embodiment is to avoid the first Z-axis motion component 511 from continuing to move downward after receiving the first feedback signal of the first photoelectric sensor 5153 for t seconds due to program errors or other abnormalities, that is, when the second baffle 51522 blocks the second photoelectric sensor 5154, the second photoelectric sensor 5154 gives a signal to the external control system to force the first Z-axis motion component 511 to stop moving downward and issue an alarm at the same time.

[0068] like Fig.12 As shown, the rotation drive assembly 513 includes a connecting plate 5131, a first servo motor 5132, a speed reducer 5133, a torque sensor 5134 and a pneumatic slip ring 5135; the connecting plate 5131 and the first mounting plate 512 are slidably connected via a vertical slide rail mechanism 5136, the first servo motor 5132 is mounted on the connecting plate 5131 via a first frame, the output end of the first servo motor 5132, the speed reducer 5133, the torque sensor 5134 and the pneumatic slip ring 5135 are sequentially connected in the height direction, the torque sensor 5134 is used to monitor the tightening torque, and the pneumatic slip ring 5135 can prevent the air source pipeline connected to the first clamping jaw 514 from being entangled when the first clamping jaw 514 rotates. Among them, one end of the moving plate 5152 is fixedly arranged on the connecting plate 5131.

[0069] like Fig.10As shown, the gripping mechanism 54 and the pre-tightening mechanism 51 are arranged in parallel on the first mounting plate 512, and the gripping mechanism 54 includes a fifth Z-axis motion component 541 and a second clamping jaw 542; the fifth Z-axis motion component 541 is arranged on the first mounting plate 512 through the second frame, and the fifth Z-axis motion component 541 can move horizontally or in the height direction following the first mounting plate 512, and the second clamping jaw 542 is arranged on the output end of the fifth Z-axis motion component 541, and the second clamping jaw 542 can be driven to move in the height direction through the fifth Z-axis motion component 541, so that the second clamping jaw 542 can clamp the retaining ring 90 on the retaining ring temporary storage station 55 and place it on the retaining ring gluing mechanism 53 (specifically, the gluing positioning plate 536). It should be noted that in this embodiment, two clamps are arranged on the first transverse movement mechanism 52, namely the first clamp 514 and the second clamp 542, which can improve the circulation efficiency of the retaining ring 90 (i.e., from the retaining ring temporary storage station 55 to the glue positioning plate 536 and then to the pre-tightening station 20d). In some embodiments, only the first clamp 514 may be designed.

[0070] like Fig.14 As shown, the retaining ring glue coating mechanism 53 includes a fifth lateral movement mechanism 531, a second stand 532, a sixth Z-axis motion assembly 533, a second glue head support plate 534, a second glue spray nozzle 535, a glue coating positioning plate 536 and a glue coating motor 537;

[0071] like Fig.14 As shown, the glue coating positioning plate 536 is arranged on the movement path of the second clamping jaw 542, and the glue coating positioning plate 536 is used to place the retaining ring 90 to be coated with glue; the glue coating motor 537 is arranged on the workbench 10, and the output end of the glue coating motor 537 is coaxially connected with the glue coating positioning plate 536, and the glue coating motor 537 can drive the glue coating positioning plate 536 to rotate horizontally to achieve circumferential uniform glue coating; the fifth transverse movement mechanism 531 is horizontally arranged on the workbench 10, and the second stand 532 is arranged on the fifth transverse movement mechanism 531. The lateral movement mechanism 531 drives the second stand 532 to move horizontally toward or away from the glue coating positioning plate 536. The sixth Z-axis motion assembly 533 is arranged on the second stand 532. The second glue head support plate 534 is arranged on the output end of the sixth Z-axis motion assembly 533. The second glue head support plate 534 can be driven to move up and down by the sixth Z-axis motion assembly 533. The second glue spraying nozzle 535 is arranged on the second glue head support plate 534, and the glue liquid is sprayed toward the retaining ring 90 by the second glue spraying nozzle 535. In this embodiment, the retaining ring glue coating mechanism 53 can freely move to a suitable glue coating position for glue coating through multiple degrees of freedom.

[0072] like Fig.15As shown, the tightening assembly 60 includes a second traverse mechanism 61, a second mounting plate 62, a second Z-axis motion assembly 63, a third mounting plate 64, a tightening gun 65 and a tightening sleeve 66;

[0073] The second transverse movement mechanism 61 is arranged on the workbench 10, and the second transverse movement mechanism 61 is located on one side of the turntable 20; the second mounting plate 62 is arranged on the second transverse movement mechanism 61, and the second mounting plate 62 can move in the second predetermined horizontal direction driven by the second transverse movement mechanism 61, and the second predetermined horizontal direction is configured as a horizontal direction horizontally facing the tightening station 20e; the second Z-axis motion component 63 is arranged on the second mounting plate 62; the third mounting plate 64 is slidably arranged on the second mounting plate 62, and the sliding direction of the third mounting plate 64 is configured as a height direction, and the second Z-axis motion component 63 is arranged on the second mounting plate 62; the third mounting plate 64 is slidably arranged on the second mounting plate 62, and the sliding direction of the third mounting plate 64 is configured as a height direction. The output end of the second Z-axis motion assembly 63 is connected to the third mounting plate 64, and the second Z-axis motion assembly 63 can drive the third mounting plate 64 to move up and down in the height direction; the tightening gun 65 is vertically arranged on the third mounting plate 64, and the tightening sleeve 66 is arranged on the output end of the tightening gun 65. When the third mounting plate 64 moves downward, the tightening sleeve 66 can be sleeved on the retaining ring 90 to be assembled, and the tightening sleeve 66 is driven to rotate by the tightening gun 65, so that the retaining ring 90 to be assembled is formally tightened on the bearing 80. During the tightening process, parameters such as tightening torque need to be monitored. The specific structural form of the tightening gun 65 refers to the prior art and will not be repeated here. In this embodiment, a type of tightening gun is provided, such as an in-line fixed wrench.

[0074] like Fig.16 and Fig.17 As shown, the assembly detection assembly 70 includes a third transverse movement mechanism 71, a fourth mounting plate 72, a horizontal slide rail mechanism 73, a fifth mounting plate 74, a third Z-axis motion assembly 75, a test bench 76, a pneumatic finger 77, a reference block 78, and a telescopic displacement detection member 79;

[0075] The third transverse movement mechanism 71 is horizontally arranged on the workbench 10, and the fourth mounting plate 72 is horizontally arranged on the third transverse movement mechanism 71. The third transverse movement mechanism 71 can drive the fourth mounting plate 72 to move in a third predetermined horizontal direction, and the third predetermined horizontal direction is configured to be horizontally toward the assembly and inspection station 20f; a horizontal slide rail mechanism 73 is arranged on the upper surface of the fourth mounting plate 72, and the fifth mounting plate 74 is horizontally arranged on the horizontal slide rail mechanism 73. The horizontal slide rail mechanism 73 can drive the fifth mounting plate 74 to move, and the moving direction of the fifth mounting plate 74 is perpendicular to the moving direction of the fourth mounting plate 72 in the horizontal plane, that is, the moving direction of the fifth mounting plate 74 is perpendicular to the third predetermined horizontal direction, and the third Z-axis motion assembly 75 is arranged on the fifth mounting plate 74, and the test bench 76 is arranged on the output end of the third Z-axis motion assembly 75, and the test bench 76 can be driven to move in the height direction through the third Z-axis motion assembly 75.

[0076] The test bench 76 in this embodiment can be adjusted in three-dimensional space, which makes it easy for the test bench 76 to move to a suitable position to test the assembled product and adapt to different product tests. The pneumatic finger 77 is arranged on the lower surface of the test table 76, and the pneumatic finger 77 is used to grab defective products to the NG station; the reference block 78 and the pneumatic finger 77 are arranged in parallel on the lower side of the test table 76, and the lower surface of the reference block 78 is configured as a positioning surface. When the reference block 78 moves downward, the positioning surface can fit with the upper surface of the bearing 80, thereby completing the positioning between the reference block 78 and the bearing 80, and the telescopic displacement detection member 79 is arranged on the reference block 78. The test end of the telescopic displacement detection member 79 protrudes downward from the bottom of the positioning surface. When the reference block 78 moves downward, the test end of the telescopic displacement detection member 79 will touch the upper surface of the retaining ring 90 (at this time, the retaining ring 90 has been assembled on the bearing 80), and then the telescopic displacement detection member 79 will shrink upward and obtain the shrinkage value. The shrinkage value is the depth position of the retaining ring 90 installed on the bearing 80. This value is used to determine whether the assembled retaining ring 90 and the bearing 80 meet the requirements.

[0077] like Fig.17 As shown, in some embodiments, the assembly detection assembly 70 also includes a floating mechanism 710, and the reference block 78 is installed on the test bench 76 through the floating mechanism 710, and the floating mechanism 710 includes a second guide column 7101, a transition block 7102 and an elastic member 7103; the second guide column 7101 slides through the test bench 76 along the height direction, the transition block 7102 is arranged at the lower end of the second guide column 7101, the reference block 78 is installed on the transition block 7102, and the elastic member 7103 (such as a spring) is coaxially sleeved on the outer periphery of the second guide column 7101, and the upper end of the elastic member 7103 is against the test bench 76, and the lower end of the elastic member 7103 is against the upper surface of the transition block 7102, and the elastic member 7103 can give the transition block 7102 an elastic force to move downward. In this embodiment, the elastic member 7103 is provided to enable the positioning surface of the reference block 78 to be pressed against the bearing 80, thereby ensuring the accuracy of the positioning reference and avoiding damage caused by rigid contact between the reference block 78 and the bearing 80.

[0078] This embodiment also discloses a method for assembling the bearing 80 and the retaining ring 90, comprising:

[0079] Step S100: an external manipulator or a human being places the bearing 80 to be assembled on the mounting mechanism 21 of the loading and unloading station 20a, specifically, placing the bearing 80 on the central mounting plate 213;

[0080] Step S200: the turntable 20 rotates by an angle of one station, so that the bearing 80 to be assembled rotates to the visual inspection station 20b, and the lifting and rotating mechanism 22 below the visual inspection station 20b lifts the bearing 80 and drives the bearing 80 to rotate. Specifically:

[0081] The following platform 226 is driven to move upward by the lifting telescopic member 223, and the following platform 226 thereby drives the lifting platform 221 to move upward, and the lifting platform 221 passes through the hollow holes of the turntable 20 and the first bottom plate 211 and moves upward, and the upper surface of the lifting platform 221 is fitted against the lower surface of the second bottom plate 212 and lifts it upward, and the central mounting plate 213 and the bearing 80 to be assembled on the second bottom plate 212 are also lifted upward, and at this time, the second positioning pin 2132 on the side wall of the central mounting plate 213 is disengaged from the positioning groove 211a on the first bottom plate 211 upward, releasing the freedom of horizontal rotation of the central mounting plate 213;

[0082] During the upward lifting process of the lifting platform 221, the rotating platform 222 is lifted together, and the positioning hole 222a on the rotating platform 222 and the first positioning pin 2131 on the lower surface of the central mounting plate 213 are first aligned and inserted together, thereby realizing the positioning of the rotating platform 222 and the central mounting plate 213; then the rotating driving member 224 drives the rotating platform 222 to rotate, so that the central mounting plate 213 and the bearing 80 to be assembled also rotate together;

[0083] The visual inspection assembly 30 performs a full range inspection on the bearing 80 during the rotation process. After the inspection is completed, the lifting platform 221 moves down, and the second bottom plate 212 and the center mounting plate 213 fall onto the first bottom plate 211 again. The second positioning pin 2132 on the side wall of the center mounting plate 213 is again placed into the positioning groove 211a on the first bottom plate 211 to achieve positioning. If the visual inspection finds that the product is defective, the defective product will continue to flow to the subsequent process until unloading, but the subsequent process will no longer process the defective product.

[0084] Step S300, after the detection is completed, the bearing 80 follows the turntable 20 and rotates again by an angle of a station, and the bearing 80 to be assembled enters the gluing station 20c, and the lifting and rotating mechanism 22 below the gluing station 20c lifts up and rotates the bearing 80 again (this part of the principle description refers to the working principle of the lifting and rotating mechanism 22 in step S200, which will not be repeated here), and the first glue spraying nozzle 45 of the bearing gluing assembly 40 sprays glue toward the bearing 80 to be assembled, and the first glue spraying nozzle 45 circumferentially applies glue to the bearing 80 during the rotation of the bearing 80. After the gluing is completed, the lifting platform 221 of the lifting and rotating mechanism 22 moves downward, and the second bottom plate 212 and the center mounting plate 213 fall onto the first bottom plate 211 again, and the second positioning pin 2132 on the side wall of the center mounting plate 213 is again placed in the positioning groove 211a on the first bottom plate 211 to achieve positioning;

[0085] Step S400, after the gluing is completed, the bearing 80 follows the turntable 20 and rotates again by an angle of one station, and the bearing 80 to be assembled enters the pre-tightening station 20d, and the second clamping jaw 542 of the grasping mechanism 54 clamps the retaining ring 90 to be assembled on the temporary storage station 55 of the retaining ring, and transfers it to the gluing positioning plate 536 of the retaining ring gluing mechanism 53, and the second glue spraying nozzle 535 of the retaining ring gluing mechanism 53 sprays glue toward the retaining ring 90, and at the same time, the gluing motor 537 drives the gluing positioning plate 536 to rotate to achieve circumferential uniform glue spraying of the retaining ring 90, after the glue spraying is completed, the first clamping jaw 514 clamps the retaining ring 90 to be assembled and moves it to the top of the bearing 80 to be assembled, and pre-tightens the retaining ring 90 to be assembled on the bearing 80, specifically:

[0086] The first Z-axis motion component 511 drives the first mounting plate 512, the first clamping jaw 514 and the retaining ring 90 to move downward. When the retaining ring 90 hits the bearing 80, due to the obstruction of the bearing 80, the first clamping jaw 514, the rotation drive component 513 and the moving plate 5152 are supported by the bearing 80. Since the first Z-axis motion component 511 continues to drive the first mounting plate 512 to continue to move downward, a relative sliding in the height direction occurs between the connecting plate 5131 of the rotation drive component 513 and the first mounting plate 512 (because the connecting plate 5131 and the first mounting plate 512 are slidably connected). When the first baffle 51521 on the moving plate 5152 is disengaged from the first photoelectric sensor 5153, the first photoelectric sensor 5153 generates a first feedback signal and transmits it to the first Z-axis motion component 511 and the first servo motor 5132 of the rotation drive component 513. After receiving the first feedback signal, the first Z-axis motion component 511 continues to drive the first mounting plate 512 to move downward for t seconds and then stops moving.

[0087] After t seconds from receiving the first feedback signal, the first servo motor 5132 starts to drive the first clamping jaw 514 and the retaining ring 90 to rotate, and the retaining ring 90 is screwed into the bearing 80, and at the same time, the moving plate 5152 and the first clamping jaw 514 are also screwed into the downward direction following the retaining ring 90, so the first baffle 51521 on the moving plate 5152 will continue to move downward, and when the first baffle 51521 cooperates with the first photoelectric sensor 5153 again, the first photoelectric sensor 5153 generates a second feedback signal and transmits it to the first Z-axis motion assembly 511 and the first servo motor 5132, and the first servo motor 5132 immediately stops rotating and the first clamping jaw 514 releases the retaining ring 90, and the first Z-axis motion assembly 511 drives the first mounting plate 512, the moving plate 5152 and the first clamping jaw 514 to reset upward;

[0088] Step 500, after the pre-tightening is completed, the retaining ring 90 and the bearing 80 follow the turntable 20 to rotate again by one station angle and enter the tightening station 20e. The second transverse movement mechanism 61 of the tightening assembly 60 drives the tightening gun 65 and the tightening sleeve 66 to move to the top of the retaining ring 90 and the bearing 80. The tightening sleeve 66 moves downward under the drive of the second Z-axis motion component 63 and is coaxially sleeved on the retaining ring 90. Then the tightening gun 65 drives the tightening sleeve 66 to rotate, so that the retaining ring 90 is formally tightened on the bearing 80. Among them, the tightening gun 65 needs to monitor the torque when tightening. After the tightening gun 65 has been running for a period of time, it is necessary to detect whether there is a deviation in the output torque to prevent poor product production due to failure, aging, etc. of the tightening gun 65;

[0089] Step 600: After the pre-tightening is completed, the bearing 80 follows the turntable 20 and rotates again by one station angle. The assembled retaining ring 90 and the bearing 80 enter the assembly inspection station 20f. The assembly inspection assembly 70 is used to inspect whether the assembled product meets the standards. Specifically:

[0090] By moving the fourth mounting plate 72 and the fifth mounting plate 74 in two directions perpendicular to each other in the horizontal plane and the third Z-axis motion component 75 driving the test bench 76 to move in the height direction, the test bench 76 can be accurately moved to the top of the bearing 80, and then the third Z-axis motion component 75 drives the reference block 78 to move downward, so that the positioning surface of the reference block 78 abuts against the bearing 80, and at the same time, the telescopic displacement detection component 79 abuts against the retaining ring 90 that has been assembled on the bearing 80, and the telescopic displacement detection component 79 is blocked by the retaining ring 90 and retracts upward, and the retracted displacement is recorded. It is determined whether the assembly meets the standard based on the displacement. If it does not meet the standard, the pneumatic finger 77 on the test bench 76 removes the bearing 80 and the retaining ring 90 together and places them at the NG station. If it meets the standard, it will flow to the next station;

[0091] Step S700, the retaining ring 90 and the bearing 80 that meet the inspection standards follow the turntable 20 to rotate again by one station angle. After the inspection, the retaining ring 90 and the bearing 80 enter the loading and unloading station 20a for unloading, which can be done manually or by a robot.

[0092] The first transverse movement mechanism 52, the second transverse movement mechanism 61, the third transverse movement mechanism 71, the fourth transverse movement mechanism 41 and the fifth transverse movement mechanism 531 in this embodiment can all refer to the slide rail and slider devices on the existing production line; the first Z-axis motion assembly 511, the second Z-axis motion assembly 63, the third Z-axis motion assembly 75, the fourth Z-axis motion assembly 43, the fifth Z-axis motion assembly 541 and the sixth Z-axis motion assembly 533 can all refer to the existing telescopic cylinder, Z-axis servo drive mechanism, etc., and this embodiment will not elaborate on this part of the existing structure in detail.

[0093] The assembly equipment and assembly method of the bearing and retaining ring of this embodiment have the following advantages:

[0094] 1. This embodiment integrates the gluing, assembly, tightening and testing processes in the assembly of the bearing 80 and the retaining ring 90, and concentrates multiple functions on one device, thereby improving the efficiency of the production line and the utilization rate of the site, and achieving cost reduction and efficiency improvement;

[0095] Second, this embodiment adopts the method of pre-tightening before tightening to achieve assembly. The purpose of pre-tightening is to prevent direct tightening from damaging the screw thread. Pre-tightening with a small torque first and then tightening with a large torque can effectively reduce the damage to the product during the assembly process;

[0096] 3. The pre-tightening mechanism 51 adopts the form of up and down sliding connection to prevent the product from being damaged during the tooth recognition process. The rotation is driven by servo, and the torque sensor 5134 monitors the torque in real time. The pneumatic slip ring 5135 enables the first clamping jaw 514 to grasp the retaining ring 90 degrees and then rotate without restriction.

[0097] 4. The installation mechanism 21 and the lifting and rotating mechanism 22 cooperate. After the installation mechanism 21 arrives at the workstation, the lifting and rotating mechanism 22 lifts up the second bottom plate 212 of the installation mechanism 21 (at the same time, the center installation plate 213 and the rotating table 222 at the bottom are positioned), and the second bottom plate 212 is temporarily separated from the turntable 20. The positioning reference of each workstation is on the lifting of its own workstation. This structure increases the accuracy of repeated positioning, reduces the difficulty of assembly and processing, and reduces the occurrence of production defects.

[0098] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A bearing and retaining ring assembly device, characterized in that: include: A turntable (20) is rotatably arranged at a predetermined position, and the turntable (20) is used for the circulation of the bearing (80) and the retaining ring (90) to be assembled; the turntable (20) is provided with a loading and unloading station (20a), a visual inspection station (20b), a gluing station (20c), a pre-tightening station (20d), a tightening station (20e), and an assembly inspection station (20f) in sequence along its circumference; The pre-tightening assembly (50) comprises a pre-tightening mechanism (51); the pre-tightening mechanism (51) comprises a first Z-axis motion component (511), a first mounting plate (512), a rotation drive component (513), a first clamping jaw (514) and a motion control component (515); the first Z-axis motion component (511) is located on one side of the turntable (20); the first mounting plate (512) is arranged on the first Z-axis motion component (511), and the first Z-axis motion component (511) can drive the first mounting plate (512) to move in a height direction; the rotation drive component (513) is slidably connected to the first mounting plate (512) in a height direction; the first clamping jaw (514) is arranged on the output end of the rotation drive component (513), and the first clamping jaw (514) is used to clamp a retaining ring (90) to be assembled, and the first clamping jaw (514) and the retaining ring (90) to be assembled are driven to rotate by the rotation drive component (513); The motion control component (515) comprises a stopper (5151), a movable plate (5152), and a first photoelectric sensing element (5153); the stopper (5151) is arranged on the first mounting plate (512), and the stopper (5151) is provided with two stopper surfaces (51511) for limiting the movable plate (5152) at intervals in the height direction; one end of the movable plate (5152) is arranged on the rotation driving component (513), and the movable plate (5152) is located between the two stopper surfaces (51511). 1); a first baffle (51521) is provided on the moving plate (5152) for cooperating with the first photoelectric sensing element (5153) to trigger the first photoelectric sensing element (5153) to generate a signal; the first photoelectric sensing element (5153) is provided on the baffle (5151) or the first mounting plate (512) and is located below the moving plate (5152); the first photoelectric sensing element (5153) is communicatively connected with the first Z-axis motion component (511) and the rotation drive component (513); The visual inspection station (20b) and the gluing station (20c) are both provided with a mounting mechanism (21); The mounting mechanism (21) comprises a first bottom plate (211), a second bottom plate (212) and a central mounting plate (213); the first bottom plate (211) is arranged on the upper surface of the turntable (20); the second bottom plate (212) is arranged on the first bottom plate (211), and the second bottom plate (212) and the first bottom plate (211) are slidably connected via a first guide column (214) so ​​that the second bottom plate (212) can move in a height direction relative to the first bottom plate (211); the central mounting plate (213) can be horizontally rotatably arranged on the second bottom plate (212), and the bearing (80) to be assembled is arranged on the central mounting plate (213); a first positioning pin (2131) extending downward is arranged on the lower surface of the central mounting plate (213); The turntable (20), the first bottom plate (211) and the second bottom plate (212) are all provided with hollow holes for exposing the central mounting plate (213) from the bottom of the turntable (20), and at least a portion of the second bottom plate (212) is exposed in the hollow hole of the first bottom plate (211); A lifting and rotating mechanism (22) is arranged below the installation mechanism (21); the lifting and rotating mechanism (22) is located below the turntable (20); the lifting and rotating mechanism (22) comprises a lifting platform (221), a rotating platform (222), a lifting and telescopic member (223) and a rotating driving member (224); the lifting platform (221) is coaxially arranged below the second bottom plate (212), and the upper surface of the lifting platform (221) can pass through the hollow hole of the first bottom plate (211) upwards and abut against the bottom surface of the second bottom plate (212); The rotating platform (222) is rotatably arranged in the lifting platform (221), and the upper surface of the rotating platform (222) is lower than or flush with the upper surface of the lifting platform (221); the rotating platform (222) is provided with a positioning hole (222a) that is inserted and matched with the first positioning pin (2131); the lifting telescopic member (223) is connected to the lifting platform (221) and is used to drive the lifting platform (221) to move up and down; the rotating driving member (224) is connected to the rotating platform (222) and is used to drive the rotating platform (222) to rotate horizontally.

2. The assembly equipment for bearings and retaining rings according to claim 1, characterized in that: The motion control component (515) further comprises a second photoelectric sensing element (5154), the second photoelectric sensing element (5154) being arranged on the stopper (5151) or the first mounting plate (512), and the movable plate (5152) being provided with a second blocking piece (51522) for cooperating with the second photoelectric sensing element (5154) to trigger the second photoelectric sensing element (5154) to generate a signal; the second photoelectric sensing element (5154) and the first photoelectric sensing element (5153) are arranged above and below the movable plate (5152), respectively.

3. The assembly equipment of the bearing and the retaining ring according to claim 2, characterized in that: The rotary drive assembly (513) comprises a connecting plate (5131), a first servo motor (5132), a speed reducer (5133), a torque sensor (5134) and a pneumatic slip ring (5135); the connecting plate (5131) is slidably connected to the first mounting plate (512) along a height direction; the first servo motor (5132) is arranged on the connecting plate (5131); the output end of the first servo motor (5132), the speed reducer (5133), the torque sensor (5134), the pneumatic slip ring (5135) and the first clamp (514) are connected in sequence; the first servo motor (5132) is communicatively connected to a first photoelectric sensing element (5153); and one end of the moving plate (5152) is arranged on the connecting plate (5131).

4. The assembly equipment for bearings and retaining rings according to claim 2, characterized in that: The pre-tightening assembly (50) further comprises a first transverse movement mechanism (52), a retaining ring gluing mechanism (53) and a grasping mechanism (54); The first transverse movement mechanism (52) is arranged on one side of the turntable (20), and the first Z-axis motion component (511) is arranged on the first transverse movement mechanism (52); the gripping mechanism (54) is arranged on the first mounting plate (512); the first transverse movement mechanism (52) can drive the first Z-axis motion component (511) and the gripping mechanism (54) to move in a first predetermined horizontal direction; along the first predetermined horizontal direction, a retaining ring temporary storage station (55) is arranged on the side of the gripping mechanism (54) away from the first Z-axis motion component (511), and the gripping mechanism (54) can grip the retaining ring (90) to be assembled on the retaining ring temporary storage station (55); along the first predetermined horizontal direction, a retaining ring gluing mechanism (53) is arranged on one side of the gripping mechanism (54) for gluing the retaining ring (90) to be assembled.

5. The bearing and retaining ring assembly device according to any one of claims 1 to 4, characterized in that: A visual inspection assembly (30) is provided on one side of the visual inspection station (20b), and the visual inspection assembly (30) is used to inspect whether the bearing (80) to be assembled has a defective appearance; A bearing glue coating assembly (40) is provided on one side of the glue coating station (20c), and the bearing glue coating assembly (40) is used to coat glue on the bearing (80) to be assembled; The pre-tightening assembly (50) is provided on one side of the pre-tightening station (20d), and the pre-tightening assembly (50) is used to pre-tighten the retaining ring (90) to be assembled onto the bearing (80); A tightening assembly (60) is provided on one side of the tightening station (20e), and the tightening assembly (60) is used to tighten the retaining ring (90) to be assembled onto the bearing (80); An assembly inspection assembly (70) is provided on one side of the assembly inspection station (20f), and the assembly inspection assembly (70) is used to inspect the assembled retaining ring (90) and the bearing (80).

6. The assembly equipment for bearings and retaining rings according to claim 1, characterized in that: Two positioning grooves (211a) are symmetrically arranged on the first bottom plate (211); The central mounting plate (213) is provided with second positioning pins (2132) corresponding one-to-one to the positioning grooves (211a), and the second positioning pins (2132) can be placed into the positioning grooves (211a) along the height direction.

7. The assembly equipment for bearings and retaining rings according to claim 5, characterized in that: The tightening assembly (60) comprises a second transverse movement mechanism (61), a second mounting plate (62), a second Z-axis motion component (63), a third mounting plate (64), a tightening gun (65) and a tightening sleeve (66); The second transverse movement mechanism (61) is arranged on one side of the turntable (20), and the second mounting plate (62) is arranged on the second transverse movement mechanism (61), and the second transverse movement mechanism (61) can drive the second mounting plate (62) to move in a second predetermined horizontal direction; the second Z-axis motion component (63) is arranged on the second mounting plate (62); the third mounting plate (64) is connected to the output end of the second Z-axis motion component (63), and the third mounting plate (64) is driven to move in the height direction through the second Z-axis motion component (63); the tightening gun (65) is arranged on the third mounting plate (64), and the tightening sleeve (66) is arranged on the output end of the tightening gun (65), and the tightening sleeve (66) is used to be sleeved on the retaining ring (90) to be assembled.

8. The assembly equipment for bearings and retaining rings according to claim 5, characterized in that: The assembly detection assembly (70) comprises a third transverse movement mechanism (71), a fourth mounting plate (72), a horizontal slide rail mechanism (73), a fifth mounting plate (74), a third Z-axis motion component (75), a test bench (76), a pneumatic finger (77), a reference block (78), and a telescopic displacement detection member (79); The third transverse movement mechanism (71) is arranged on one side of the turntable (20); the fourth mounting plate (72) is arranged on the third transverse movement mechanism (71), and the fourth mounting plate (72) is driven to move in a third predetermined horizontal direction by the third transverse movement mechanism (71); the horizontal slide rail mechanism (73) is arranged on the fourth mounting plate (72), and the fifth mounting plate (74) is arranged on the horizontal slide rail mechanism (73), and the horizontal slide rail mechanism (73) can drive the fifth mounting plate (74) to slide in a direction perpendicular to the third predetermined horizontal direction; the third Z-axis motion component (75) is arranged The test bench (76) is arranged on the third Z-axis motion assembly (75), and the test bench (76) is driven to move in the height direction by the third Z-axis motion assembly (75); the pneumatic finger (77) is arranged on the test bench (76); the reference block (78) is arranged on the fifth mounting plate (74), and the lower surface of the reference block (78) is configured as a positioning surface capable of being fitted with the bearing (80); the telescopic displacement detection member (79) is arranged on the reference block (78), and the telescopic displacement detection member (79) protrudes downward from below the positioning surface.

9. The assembly equipment for bearings and retaining rings according to claim 8, characterized in that: The assembly detection assembly (70) further comprises a floating mechanism (710); the reference block (78) is connected to the test bench (76) via the floating mechanism (710); the floating mechanism (710) comprises a second guide column (7101), a transition block (7102) and an elastic member (7103); the second guide column (7101) is slidably arranged on the test bench (76) along a height direction; the transition block (7102) is connected to the lower end of the second guide column (7101); the reference block (78) is arranged on the transition block (7102); the elastic member (7103) is sleeved on the second guide column (7101) and two ends of the elastic member (7103) are respectively abutted against the transition block (7102) and the test bench (76).

10. A method for assembling a bearing and a retaining ring, characterized in that: An assembly device for a bearing and a retaining ring according to any one of claims 1 to 9 is used, and the assembly method comprises: Pre-tighten the retaining ring to be assembled onto the bearing: The first clamping jaw clamps the retaining ring to be assembled and moves to the top of the bearing, and the first Z-axis motion component drives the first clamping jaw and the retaining ring to move downward. After the retaining ring hits the bearing, the first Z-axis motion component continues to drive the first mounting plate to move downward at a uniform speed, and the moving plate moves upward relative to the first mounting plate. When the first baffle on the moving plate is disengaged from the first photoelectric sensing element, the first photoelectric sensing element generates a first feedback signal and transmits it to the first Z-axis motion component and the first servo motor. After receiving the first feedback signal, the first Z-axis motion component continues to drive the first mounting plate to move downward for t seconds and then stops; The first servo motor starts to drive the first clamping jaw and the retaining ring to rotate t seconds after receiving the first feedback signal. The retaining ring is screwed into the bearing through the thread. At the same time, the movable plate and the first clamping jaw also move downward with the retaining ring. When the first baffle and the first photoelectric sensing element cooperate again, the first photoelectric sensing element generates a second feedback signal and transmits it to the first Z-axis motion assembly and the first servo motor. The first servo motor stops rotating and the first clamping jaw releases the retaining ring. The first Z-axis motion assembly drives the first mounting plate, the movable plate and the first clamping jaw to reset upward.

11. The method for assembling a bearing and a retaining ring according to claim 10, characterized in that: Assembly methods include: Step S100, placing the bearing to be assembled on the loading and unloading station; Step S200, the turntable rotates to an angle of one station, so that the bearing to be assembled rotates to the visual inspection station, and the lifting platform below the visual inspection station lifts the second bottom plate of the mounting mechanism upward, and at the same time, the positioning hole on the rotating table is engaged with the first positioning pin on the center mounting plate to achieve positioning, and then the rotating table drives the center mounting plate and the bearing to be assembled on the center mounting plate to rotate, and the visual inspection assembly performs a full range of appearance inspection on the bearing during the rotation process. After the inspection is completed, the lifting platform moves down, and the second bottom plate and the center mounting plate fall back onto the first bottom plate; Step S300: After the detection is completed, the bearing follows the turntable and rotates again by an angle of one station, and the bearing to be assembled enters the gluing station. The lifting and rotating mechanism below the gluing station lifts and rotates the bearing again, and the bearing gluing assembly realizes circumferential gluing of the bearing during the rotation of the bearing. After the gluing is completed, the lifting platform moves down, and the second bottom plate and the center mounting plate fall onto the first bottom plate again; Step S400: After the glue coating is completed, the bearing follows the turntable and rotates again by an angle of one station, and the bearing to be assembled enters the pre-tightening station. The first clamping jaw clamps the retaining ring to be assembled and moves to the top of the bearing to be assembled, and pre-tightens the retaining ring to be assembled on the bearing, and the retaining ring and the bearing enter the next station together; Step 500: After the pre-tightening is completed, the bearing follows the turntable and rotates again by an angle of one station, and the retaining ring and bearing to be assembled enter the tightening station. The second transverse movement mechanism of the tightening assembly drives the tightening gun and the tightening sleeve to move to the top of the retaining ring and the bearing. The tightening sleeve moves downward under the drive of the second Z-axis motion component and is sleeved on the retaining ring. The tightening gun drives the tightening sleeve to rotate and tightens the retaining ring on the bearing. Step 600, after the pre-tightening is completed, the bearing follows the turntable and rotates again by an angle of one station. The assembled retaining ring and bearing enter the assembly inspection station. The third Z-axis motion component drives the test bench to move downward. The positioning surface of the reference block abuts against the bearing. At the same time, the telescopic displacement detection part abuts against the retaining ring on the bearing. The telescopic displacement detection part retracts upward and obtains the retracted displacement. Whether the assembly meets the standard is determined based on the displacement. If it does not meet the standard, the pneumatic finger on the test bench removes the bearing and the retaining ring together. If it meets the standard, it will flow to the next station. Step S700, the retaining rings and bearings that meet the inspection standards follow the turntable to rotate again by an angle of one station, and the retaining rings and bearings that have completed the inspection enter the loading and unloading station again for unloading.

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