Efficient automatic assembling equipment for rotating shaft and assembling process

Abstract

The invention relates to the technical field of assembly, and discloses efficient automatic assembly equipment for a rotating shaft, the efficient automatic assembly equipment comprises a rotary table driven by a motor to rotate and a driver mounted on a supporting column, and a first stand column used for inserting the rotating shaft and a second stand column used for placing a bearing are fixedly mounted on the rotary table; a grabbing barrel is fixedly installed at the power output end of the driver, and the motor drives the rotary table to rotate so that the first stand column and the second stand column can be alternately located under the grabbing barrel. By means of the design of the grabbing barrel, the function of a mechanical arm for grabbing a rotating shaft, the function of an oiling mechanism for oiling the rotating shaft and the function of a pressing-in mechanism for pressing the rotating shaft into a bearing in the prior art are achieved at the same time, so that parts of the whole assembling equipment are greatly reduced, and the manufacturing cost and the maintenance cost are greatly reduced. And the oiling procedure is realized in the process of grabbing the rotating shaft, and independent oiling operation is not needed, so that the operation links in the whole assembly process are reduced, and the assembly speed is increased.

Description

Technical Field

[0001] The invention relates to the technical field of assembly, and in particular to a high-efficiency automatic assembly device and an assembly process for a rotating shaft. Background Art

[0002] When the shaft is in use, bearings are assembled for it in order to reduce the friction coefficient during its movement and ensure its rotation accuracy. Depending on the use scenario of the shaft, the shaft may be assembled with one, two or even more bearings. To improve assembly efficiency, special assembly equipment is usually used in the prior art to assemble the shaft.

[0003] There are many types of existing assembly equipment, but most of them include a conveying mechanism for parts, a grabbing robot that grabs parts and places them on the workstation, an oiling mechanism that oils the shaft before assembly to reduce friction when pressing in, a pressing mechanism that presses the shaft into the bearing, an inspection mechanism that detects whether the assembled assembly is missing parts, and a unloading mechanism that removes the assembled shaft and bearings.

[0004] Although the automatic assembly of the shaft and the bearing can be achieved by sequentially cooperating in various links, it is found in the actual operation process that the prior art has at least the following deficiencies:

[0005] In the prior art, since the manipulator for grabbing the rotating shaft, the oiling mechanism for greasing the rotating shaft, and the pressing mechanism for pressing the rotating shaft into the bearing are three components with completely different structures, the entire assembly equipment has many parts, and the manufacturing and maintenance costs are increased. In addition, the manipulator, the oiling mechanism, and the pressing mechanism are operated in sequence by cooperating with each other during operation, which undoubtedly increases the number of operating links in the entire assembly process and reduces the assembly speed. It can be seen that how to reduce the number of operating procedures in the entire assembly process of the rotating shaft and the bearing to increase the assembly speed while reducing the number of parts in the assembly equipment is a technical problem that needs to be solved urgently. Summary of the invention

[0006] The purpose of the present invention is to provide a high-efficiency automatic assembly device and assembly process for a rotating shaft to solve the above-mentioned deficiencies in the prior art.

[0007] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a high-efficiency automatic assembly device for a rotating shaft, comprising a turntable driven to rotate by a motor, a drive mounted on a support column, a first column for inserting the rotating shaft and a second column for placing the bearing fixedly mounted on the turntable;

[0008] A grabbing cylinder is fixedly mounted on the power output end of the drive, and the motor drives the turntable to rotate so that the first column and the second column are alternately located directly below the grabbing cylinder;

[0009] An inner sliding tube is elastically and slidably provided in the inner cavity of the grabbing cylinder, a through hole is opened in the center of the inner sliding tube, the inner wall of the through hole is slidably fitted with the outer peripheral surface of the rotating shaft, the inner sliding tube is filled with oil-absorbing cotton, and when the first column is located directly below the grabbing cylinder, the rotating shaft penetrates the through hole during the process of the driving to move the grabbing cylinder downward so that the lubricating oil in the oil-absorbing cotton is smeared on the outer peripheral surface of the rotating shaft;

[0010] An insertion groove is provided at the top of the inner cavity of the grabbing cylinder for inserting the end of the rotating shaft, and a plurality of arc-shaped spring pieces arranged equidistantly in the circumferential direction are fixedly installed in the insertion groove. After the rotating shaft passes through the through hole, the end of the rotating shaft is inserted into the insertion groove and clamped by the plurality of arc-shaped spring pieces so that the grabbing cylinder grabs the rotating shaft;

[0011] The rotating shaft is grasped by the grasping cylinder and moves upward, and then the turntable rotates to rotate the second column to the bottom of the grasping cylinder, and then the grasping cylinder moves downward again to push the rotating shaft into the bearing.

[0012] The above-mentioned high-efficiency automatic assembly equipment for the rotating shaft, the inner sliding tube includes a partition tube fixed inside it so that the interior of the inner sliding tube is divided into a through hole and an oil receiving chamber, the oil receiving chamber is filled with oil absorbent cotton, and a plurality of leakage holes are opened on the partition tube so that the oil absorbent cotton can fill the plurality of leakage holes.

[0013] In the above-mentioned high-efficiency automatic assembly equipment for the rotating shaft, a plurality of compression springs equidistantly arranged in the circumferential direction are fixedly installed between the top of the inner sliding tube and the top surface of the inner cavity of the grabbing tube to realize the elastic sliding of the inner sliding tube.

[0014] The above-mentioned high-efficiency automatic assembly equipment for the rotating shaft, when the end of the rotating shaft is clamped by multiple arc-shaped spring pieces, the bottom height of the outer circumference of the rotating shaft is higher than the bottom height of the inner sliding tube so that the outer circumference of the rotating shaft is coated with lubricating oil. At the same time, when the grabbing cylinder presses the rotating shaft into the bearing, the bottom of the inner sliding tube first abuts against the top of the bearing so that the inner sliding tube axially elastically squeezes and fixes the bearing.

[0015] The above-mentioned high-efficiency automatic assembly equipment for the rotating shaft, the inner sliding tube is made of a material that is not easy to deform, so that when the rotating shaft is pressed into the bearing, the inner wall of the through hole and the outer peripheral surface of the rotating shaft slide together, so that the inner sliding tube supports the rotating shaft and prevents the rotating shaft from generating radial deformation.

[0016] The above-mentioned high-efficiency automatic assembly equipment for the rotating shaft has an inner cavity of the grabbing cylinder with the same diameter as the outer circumferential surface of the bearing, and a bell tube bent outward is integrally provided at the bottom of the grabbing cylinder. When the grabbing cylinder drives the rotating shaft to move downward and insert into the bearing, the inner wall of the bell tube first slides and abuts against the top of the outer circumferential surface of the bearing to enable the bearing to accurately enter the inner cavity of the grabbing cylinder and be coaxial with the rotating shaft, thereby realizing the alignment of the bearing and the rotating shaft.

[0017] The above-mentioned rotating shaft uses high-efficiency automatic assembly equipment. During the process of inserting the rotating shaft into the bearing, the inner sliding tube slides upward elastically to allow the compression spring to store elastic force. After the assembly of the rotating shaft and the bearing is completed, the elastic force of the compression spring is released during the upward movement of the grabbing cylinder to push the end of the rotating shaft to separate from the multiple arc-shaped spring pieces, thereby automatically realizing the separation of the assembled rotating shaft and the grabbing cylinder.

[0018] The above-mentioned high-efficiency automatic assembly equipment for the rotating shaft has a second hole in the center of the second column to enable the rotating shaft to be further inserted into the second hole during the process of inserting the rotating shaft into the bearing. The diameter of the second hole is larger than the diameter of the outer circumference of the rotating shaft. When the second column fails to successfully place the bearing, the rotating shaft is driven downward by the grasping cylinder and inserted into the second hole. The grasping cylinder is then moved upward again to release the elastic force of the compression spring. The compression spring cannot push the end of the rotating shaft to separate from the multiple arc-shaped spring pieces, thereby preventing a defective assembly without a bearing.

[0019] The above-mentioned high-efficiency automatic assembly equipment for the rotating shaft has a first socket at the center of the first column, the first socket passes through the top and the bottom of the first column, and a plurality of supporting spring plates arranged circumferentially for supporting the rotating shaft are fixedly installed at the bottom of the first socket. When the rotating shaft clamped in the grasping cylinder is not separated from the plurality of arc-shaped spring plates and continues to move downward to grasp the next rotating shaft, the rotating shaft clamped in the grasping cylinder presses downward on the rotating shaft on the first column so that the rotating shaft on the first column presses downward on the plurality of supporting spring plates to deform and separate from the first column.

[0020] A high-efficiency automatic assembly process for a rotating shaft, based on the high-efficiency automatic assembly equipment for a rotating shaft, comprises the following steps:

[0021] S1: Loading: Insert the shaft into the first column and place the bearing on top of the second column;

[0022] S2: Grab the rotating shaft: Start the motor to drive the turntable to rotate a specific angle so that the first column with the rotating shaft inserted rotates to the bottom of the grabbing cylinder, and then start the drive to drive the grabbing cylinder to move vertically downward so that the rotating shaft is inserted into the grabbing cylinder. During this process, the rotating shaft first passes through the through hole so that the lubricating oil in the oil-absorbing cotton is smeared on the outer peripheral surface of the rotating shaft. As the grabbing cylinder continues to move downward, the end of the rotating shaft is inserted into the insertion groove and elastically clamped by the multiple arc-shaped spring pieces inserted in the groove. Finally, the driving drive grabbing cylinder moves upward to grab the rotating shaft and separate it from the first column;

[0023] S3: Press-in assembly: Start the motor again to drive the turntable to rotate to a specific angle so that the second column with the bearing is rotated to the bottom of the grabbing cylinder. Then start the drive again to drive the grabbing cylinder to move vertically downward. The downward movement of the grabbing cylinder drives the rotating shaft to move downward synchronously so that the grabbing cylinder pushes the rotating shaft into the bearing to achieve assembly.

[0024] Beneficial effects:

[0025] In the above technical scheme, the present invention provides a kind of efficient automatic assembly equipment and assembly process for a rotating shaft. Through the structural design of the grabbing cylinder, a simple structure brings about the integration of multiple functions. First, in the process of grabbing the rotating shaft by the grabbing cylinder, the rotating shaft is first inserted into the through hole and oiled by the downward movement of the grabbing cylinder, thereby realizing the role of the oiling mechanism in the prior art; after oiling, the end of the rotating shaft continues to be inserted into the insertion groove and is clamped by a plurality of arc-shaped spring pieces, so that the grabbing cylinder grabs the rotating shaft, thereby realizing the role of the manipulator in the prior art; after grabbing the rotating shaft, the grabbing cylinder moves up and then down, and the rotating shaft is pressed into the bearing through the downward pressure of the grabbing cylinder, thereby realizing the role of the pressing mechanism in the prior art. It can be seen that the design of the grabbing cylinder simultaneously realizes the role of the manipulator for grabbing the rotating shaft, the role of the oiling mechanism for oiling the rotating shaft, and the role of the pressing mechanism for pressing the rotating shaft into the bearing in the prior art, thereby greatly reducing the number of parts of the entire assembly equipment, and greatly reducing the manufacturing cost and maintenance cost. Moreover, the oiling process is implemented in the process of grabbing the rotating shaft, and there is no need to perform a separate oiling operation, which reduces the number of operating links in the entire assembly process and improves the assembly speed. It can be seen that the present invention can effectively solve the shortcomings of the prior art;

[0026] In the present invention, when the end of the rotating shaft is clamped by a plurality of arc-shaped spring pieces, the bottom height of the outer peripheral surface of the rotating shaft is higher than the bottom height of the inner sliding tube so that the outer peripheral surface of the rotating shaft is evenly coated with lubricating oil, and at the same time, when the grabbing cylinder presses the rotating shaft into the bearing, the bottom of the inner sliding tube first abuts against the top of the bearing so that the inner sliding tube axially elastically squeezes and fixes the bearing, so that the bearing remains stable when the rotating shaft is pressed into the bearing. It can be seen that the inner sliding tube not only plays the role of greasing the rotating shaft, but also plays the role of fixing the bearing;

[0027] Furthermore, the present invention utilizes the non-deformable characteristic of the inner sliding tube. When the rotating shaft is pressed into the bearing by the grabbing tube, the inner sliding tube is sleeved on the rotating shaft, and the spacer tube fits the rotating shaft. Thus, the inner sliding tube not only plays the role of lubricating the rotating shaft and fixing the bearing, but also produces an unexpected technical effect of protecting the rotating shaft from radial deformation.

[0028] More importantly, in the present invention, a bell tube bent outward is integrally provided at the bottom of the grabbing cylinder, so that when the bearing is displaced and deviated, the inner wall of the bell tube first slides against the top of the outer peripheral surface of the bearing to push the deviated bearing to move during the process of the grabbing cylinder driving the rotating shaft to move downward into the bearing, so that the bearing enters the inner cavity of the grabbing cylinder. Since the diameter of the inner cavity of the grabbing cylinder is the same as the diameter of the outer peripheral surface of the bearing, the bearing is coaxial with the grabbing cylinder after entering the inner cavity of the grabbing cylinder, and the rotating shaft is also coaxial with the grabbing cylinder, so that the bearing and the rotating shaft are coaxial. In this way, even if the bearing is displaced and deviated, the grabbing cylinder can center the bearing during the process of inserting the rotating shaft into the bearing so that the bearing with displacement deviation is coaxial with the rotating shaft, so that the grabbing cylinder produces unexpected technical effects during the downward movement.

[0029] The present invention not only can reset the inner slide tube after assembly is completed by providing a compression spring, but can also unexpectedly drive the inner slide tube to separate the assembled rotating shaft and bearing from the grabbing tube during the reset process, thereby producing an unexpected technical effect.

[0030] In the prior art, when the rotating shaft is grabbed but the bearing is not successfully placed on the work station during an assembly cycle, if the pressing mechanism continues to press the rotating shaft, a defective assembly without a bearing will appear. In the present invention, the special pressing method of the rotating shaft by the grasping cylinder is used, so that the inner sliding tube is pushed upward by the bearing to store the elastic force of the compression spring during the pressing process of the rotating shaft into the bearing. When there is no bearing, the bottom of the inner sliding tube will not contact the bearing, so that when the grasping cylinder moves upward to release the elastic force of the compression spring, the inner sliding tube cannot apply force to the rotating shaft, and the rotating shaft cannot be separated from the multiple arc-shaped spring pieces. When the grasping cylinder moves upward, it will drive the rotating shaft to move upward synchronously, and then there will be no defective assembly without a bearing. The technical problem of defective assembly without a bearing in the prior art is unexpectedly solved, and the setting of the detection mechanism for detecting whether the assembled assembly is missing parts in the prior art is saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0032] Figure 1 A schematic diagram of the structure of a high-efficiency automatic assembly device for a rotating shaft provided in an embodiment of the present invention;

[0033] Figure 2 A schematic diagram of the structure of a first column, a second column and a turntable provided in an embodiment of the present invention;

[0034] Figure 3 A schematic cross-sectional view of the interior of a grabbing cylinder provided in an embodiment of the present invention;

[0035] Figure 4 The embodiment of the present invention provides Figure 3 A schematic diagram of the enlarged structure of part A;

[0036] Figure 5 A schematic cross-sectional view of the inner sliding tube provided in an embodiment of the present invention;

[0037] Figure 6 A schematic cross-sectional view of a structure in which a plurality of arc-shaped spring pieces provided in an embodiment of the present invention clamp an end of a rotating shaft;

[0038] Figure 7 A schematic cross-sectional view of the structure when the bell tube pushes the bearing to align with the rotating shaft during the downward movement of the rotating shaft driven by the grabbing cylinder provided by the embodiment of the present invention;

[0039] Figure 8 A schematic cross-sectional view of a bearing provided in an embodiment of the present invention when it enters a grabbing cylinder and is squeezed by an inner sliding tube;

[0040] Fig. 9 A schematic cross-sectional view of a rotating shaft inserted into a bearing according to an embodiment of the present invention;

[0041] Fig.10 A schematic cross-sectional structural diagram of a first column provided in an embodiment of the present invention.

[0042] Description of reference numerals:

[0043] 1. Support column; 2. Drive; 3. Grabbing cylinder; 301. Oil filling hole; 302. Insertion groove; 303. Trumpet tube; 4. Arc-shaped spring piece; 5. Inner sliding tube; 501. Spacer; 502. Leakage hole; 503. Through hole; 504. Oil receiving chamber; 505. Opening; 6. Oil-absorbing cotton; 7. Compression spring; 8. Turntable; 801. Second inner groove; 802. First inner groove; 9. First column; 901. First plug hole; 902. Support spring piece; 10. Second column; 1001. Second plug hole; 11. Rotating shaft; 12. Bearing; 13. Fixed plate; 14. Motor. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0045] First embodiment:

[0046] like Figure 1-10As shown, an embodiment of the present invention provides a high-efficiency automatic assembly device for a rotating shaft, comprising a turntable 8 driven to rotate by a motor 14, a drive 2 installed on a support column 1, and a first column 9 for inserting a rotating shaft 11 and a second column 10 for placing a bearing 12 are fixedly installed on the turntable 8;

[0047] The power output end of the drive 2 is fixedly mounted with a grabbing drum 3, and the motor 14 drives the turntable 8 to rotate so that the first column 9 and the second column 10 are alternately located directly below the grabbing drum 3;

[0048] An inner sliding tube 5 is elastically and slidably provided in the inner cavity of the grabbing cylinder 3, a through hole 503 is opened in the center of the inner sliding tube 5, the inner wall of the through hole 503 is slidably fitted with the outer peripheral surface of the rotating shaft 11, and the inner sliding tube 5 is filled with oil-absorbing cotton 6. When the first column 9 is located directly below the grabbing cylinder 3, the driving 2 drives the grabbing cylinder 3 to move downward, and the rotating shaft 11 penetrates the through hole 503 so that the lubricating oil in the oil-absorbing cotton 6 is smeared on the outer peripheral surface of the rotating shaft 11;

[0049] An insertion slot 302 is provided at the top of the inner cavity of the grabbing cylinder 3 for inserting the end of the rotating shaft 11. A plurality of arc-shaped spring pieces 4 arranged equidistantly in the circumferential direction are fixedly installed in the insertion slot 302. After the rotating shaft 11 passes through the through hole 503, the end of the rotating shaft 11 is inserted into the insertion slot 302 and clamped by the plurality of arc-shaped spring pieces 4 so that the grabbing cylinder 3 grabs the rotating shaft 11.

[0050] The rotating shaft 11 is grasped by the grasping cylinder 3 and moves upward, and then the turntable 8 rotates to rotate the second column 10 to the bottom of the grasping cylinder 3 , and then the grasping cylinder 3 moves downward again to push the rotating shaft 11 to insert into the bearing 12 .

[0051] The high-efficiency automatic assembly equipment for the rotating shaft provided in this embodiment is used for press-fit assembly of the rotating shaft and the bearing. The "outer peripheral surface of the rotating shaft 11" involved in the present invention refers to the outer peripheral surface of the cylinder after the end of the rotating shaft 11 is removed. The words of direction and position involved in the present invention are relative to the drawings. Specifically, the assembly equipment includes a fixedly installed fixed disk 13, the turntable 8 is rotatably installed on the fixed disk 13, and the motor 14 is fixedly installed on the fixed disk 13. The motor 14 is a reduction motor or a servo motor. The motor 14 is used to drive the turntable 8 to rotate (the way the motor 14 drives the turntable 8 to rotate is the existing technology and is not repeated). The turntable 8 circulates according to the set angle, so that the first column 9 and the second column 10 are alternately located directly below the grabbing cylinder 3, and "directly below" means that the upper and lower axes are coaxial. The first column 9 and the second column 10 are both fixedly mounted on the turntable 8, the height of the second column 10 is higher than that of the first column 9, a first plug hole 901 is provided at the center of the first column 9 for inserting the rotating shaft 11, the diameter of the first plug hole 901 is matched with the diameter of the outer peripheral surface of the rotating shaft 11, a second plug hole 1001 is provided at the center of the second column 10, the second plug hole 1001 is used to avoid the rotating shaft 11 when the rotating shaft 11 is inserted into the bearing 12, the outer diameter of the second column 10 is equal to or smaller than the outer diameter of the bearing 12 so that the second column 10 can be inserted into the grabbing tube 3, the outer diameter of the first column 9 is equal to or smaller than the outer diameter of the bearing 12 so that the first column 9 can also be inserted into the grabbing tube 3.

[0052] In this embodiment, the driver 2 is mounted on the support column 1. The driver 2 is a servo cylinder, an electric cylinder, or a hydraulic cylinder. The position of the driver 2 is fixed during operation. The power output end of the driver 2 is fixedly mounted with a grabbing cylinder 3, so that the grabbing cylinder 3 can be driven to move axially up and down when the driver 2 is started. In the present invention, the up and down movement of the grabbing cylinder 3 can achieve multiple functions such as grabbing the rotating shaft 11, lubricating the rotating shaft 11, and pressing the rotating shaft 11 downward to insert the rotating shaft 11 into the bearing 12.

[0053] Among them, the multiple functions achieved by the grabbing cylinder 3 are specifically implemented as follows:

[0054] The bottom of the grabbing cylinder 3 is open, and the top is fixedly connected to the power output end of the drive 2. The inner cavity of the grabbing cylinder 3 is elastically slidably provided with an inner sliding tube 5. The through hole 503 is used for the insertion of the rotating shaft 11. The diameter of the through hole 503 is adapted to the diameter of the outer peripheral surface of the rotating shaft 11 so that when the rotating shaft 11 is inserted into the through hole 503, the outer peripheral surface of the rotating shaft 11 fits with the inner wall of the through hole 503. The inner sliding tube 5 is coaxial with the grabbing cylinder 3, and when the first column 9 with the rotating shaft 11 inserted is located directly below the grabbing cylinder 3, the rotating shaft 11 is coaxial with the grabbing cylinder 3, so that the inner sliding tube 5 and the rotating shaft 11 are also coaxial. Therefore, when the grabbing cylinder 3 moves downward, the rotating shaft 11 can be inserted into the through hole 503. The inner sliding tube 5 is filled with oil-absorbing cotton 6, and lubricant is adsorbed in the oil-absorbing cotton 6. When the rotating shaft 11 is inserted into the through hole 503, the lubricant in the oil-absorbing cotton 6 is smeared on the outer peripheral surface of the rotating shaft 11 to achieve the effect of oiling the rotating shaft 11.

[0055] At the same time, the insertion groove 302 is coaxial with the grasping cylinder 3, and a plurality of arc-shaped spring pieces 4 equidistantly arranged in the circumferential direction and fixedly installed in the insertion groove 302 are used to clamp the end of the rotating shaft 11. When the rotating shaft 11 is inserted into the grasping cylinder 3, the rotating shaft 11 passes through the through hole 503 and enters the insertion groove 302 and is elastically clamped by the plurality of arc-shaped spring pieces 4. Then, the driving 2 drives the grasping cylinder 3 to move upward, and the upward movement of the grasping cylinder 3 drives the rotating shaft 11 to move upward synchronously, thereby realizing the grasping effect on the rotating shaft 11.

[0056] After the rotating shaft 11 is grasped and moved upward, the first column 9 is moved away from directly below the grasping cylinder 3 by the rotation of the turntable 8, and the second column 10 with the bearing 12 is rotated to directly below the grasping cylinder 3, and then the grasping cylinder 3 is driven to move downward again by the driving 2. At this time, the second column 10, the bearing 12 and the grasping cylinder 3 are all coaxial, so that the downward movement of the grasping cylinder 3 pushes the rotating shaft 11 to be inserted into the bearing 12 until the rotating shaft 11 is inserted to a suitable depth, thereby realizing the effect of pressing the rotating shaft 11 into the bearing 12. The rotating shaft 11 extending below the bearing 12 is inserted into the second insertion hole 1001, thereby realizing the assembly of the rotating shaft 11 and the bearing 12.

[0057] The working principle is: first, the shaft 11 can be inserted into the first column 9 in sequence by a robot, and the bearing 12 can be placed on the top of the second column 10, or it can be directly operated manually by an operator, which will not be repeated. Then, the motor 14 is started to drive the turntable 8 to rotate a specific angle so that the first column 9 with the shaft 11 inserted therein rotates to the bottom of the grabbing cylinder 3, and then the drive 2 is started to drive the grabbing cylinder 3 to move vertically downward so that the shaft 11 is inserted into the grabbing cylinder 3. During this process, the shaft 11 first passes through the through hole 503 so that the lubricating oil in the oil-absorbing cotton 6 is smeared on the outer circumferential surface of the shaft 11. As the grabbing cylinder 3 continues to move downward, the end of the shaft 11 is inserted into the insertion groove 302 and is elastically clamped by the multiple arc-shaped spring pieces 4 inserted into the groove 302. Finally, the drive 2 drives the grabbing cylinder 3 to move upward to grab the shaft 11 and separate it from the first column 9; then, the motor 14 is started again to drive the turntable 8 to rotate a specific angle so that the second column 10 with the bearing 12 placed therein rotates to the bottom of the grabbing cylinder 3, and then the drive 2 is started again to drive the grabbing cylinder 3 to move vertically downward. The downward movement of the grabbing cylinder 3 drives the shaft 11 to move downward synchronously so that the grabbing cylinder 3 pushes the shaft 11 to insert into the bearing 12 for assembly.

[0058] It can be seen that the present invention integrates multiple functions in a simple structure through the structural design of the grabbing cylinder 3. First, in the process of grabbing the rotating shaft 11 by the grabbing cylinder 3, the rotating shaft 11 is first inserted into the through hole 503 and greased by the downward movement of the grabbing cylinder 3, thereby realizing the role of the oiling mechanism in the prior art; after greased, the end of the rotating shaft 11 continues to be inserted into the insertion groove 302 and is clamped by multiple arc-shaped spring pieces 4, so that the grabbing cylinder 3 grabs the rotating shaft 11, thereby realizing the role of the manipulator in the prior art; after grabbing the rotating shaft 11, the grabbing cylinder 3 moves up and then down, and the rotating shaft 11 is pressed into the bearing 12 by the downward pressure of the grabbing cylinder 3, thereby realizing the role of the pressing mechanism in the prior art. It can be seen that the design of the grabbing cylinder 3 simultaneously realizes the role of the manipulator for grabbing the rotating shaft, the role of the oiling mechanism for greased the rotating shaft, and the role of the pressing mechanism for pressing the rotating shaft into the bearing in the prior art, thereby greatly reducing the number of parts of the entire assembly equipment, and greatly reducing the manufacturing cost and maintenance cost. Moreover, the oiling process is implemented during the process of grabbing the rotating shaft 11, and there is no need to perform a separate oiling operation, which reduces the number of operating links in the entire assembly process and improves the assembly speed. It can be seen that the present invention can effectively solve the shortcomings of the prior art.

[0059] In this embodiment, the inner slide tube 5 includes a spacer 501 fixed therein so that the interior of the inner slide tube 5 is divided into a through hole 503 and an oil receiving chamber 504, and the oil receiving chamber 504 is filled with oil absorbing cotton 6. A plurality of leakage holes 502 are opened on the spacer 501 so that the oil absorbing cotton 6 fills the plurality of leakage holes 502. Specifically, the leakage holes 502 are used to connect the through hole 503 and the oil receiving chamber 504, and the oil absorbing cotton 6 fills the plurality of leakage holes 502, so that when the rotating shaft 11 is inserted into the through hole 503, the outer peripheral surface of the rotating shaft 11 can contact the oil absorbing cotton 6, so that the lubricating oil in the oil absorbing cotton 6 can be applied to the outer peripheral surface of the rotating shaft 11.

[0060] Among them, a plurality of compression springs 7 arranged equidistantly in the circumference are fixedly installed between the top of the inner sliding tube 5 and the top surface of the inner cavity of the grabbing tube 3 to realize the elastic sliding of the inner sliding tube 5, that is, the elastic force of the compression springs 7 is used to realize the elastic sliding of the inner sliding tube 5.

[0061] In this embodiment, when the end of the rotating shaft 11 is clamped by a plurality of arc-shaped spring pieces 4, the bottom height of the outer peripheral surface of the rotating shaft 11 is higher than the bottom height of the inner slide tube 5 so that the outer peripheral surface of the rotating shaft 11 is evenly coated with lubricating oil, and at the same time, when the grabbing cylinder 3 presses the rotating shaft 11 into the bearing 12, the bottom of the inner slide tube 5 first abuts against the top of the bearing 12 so that the inner slide tube 5 axially elastically squeezes and fixes the bearing 12, so that the bearing 12 remains stable when the rotating shaft 11 is pressed into the bearing 12. It can be seen that the inner slide tube 5 not only plays the role of greasing the rotating shaft 11, but also plays the role of fixing the bearing 12, so that the bearing 12 is more stable when the rotating shaft 11 is pressed into the bearing 12, thereby making the pressing action more stable.

[0062] Furthermore, the inner slide tube 5 is made of a material that is not easily deformed, so that when the rotating shaft 11 is pressed into the bearing 12, the inner wall of the through hole 503 and the outer peripheral surface of the rotating shaft 11 slide and fit together, so that the inner slide tube 5 supports the rotating shaft 11 to prevent the rotating shaft 11 from generating radial deformation. In the present invention, the inner slide tube 5 is made of materials such as stainless steel, high carbon steel, hard alloy, titanium alloy or ceramic, and the non-deformable property of the inner slide tube 5 is utilized. When the rotating shaft 11 is pressed into the bearing 12 by the grabbing tube 3, the inner slide tube 5 is sleeved on the rotating shaft 11, and the spacer 501 fits with the rotating shaft 11, so that the inner slide tube 5 not only plays the role of greasing the rotating shaft 11 and fixing the bearing 12, but also produces an unexpected technical effect of protecting the rotating shaft 11 from generating radial deformation.

[0063] Furthermore, the diameter of the inner cavity of the grasping cylinder 3 is the same as the diameter of the outer circumference of the bearing 12. A bell tube 303 bent outward is integrally provided at the bottom of the grasping cylinder 3. When the grasping cylinder 3 drives the rotating shaft 11 to move downward and insert into the bearing 12, the inner wall of the bell tube 303 first slides and abuts against the top of the outer circumference of the bearing 12 to enable the bearing 12 to accurately enter the inner cavity of the grasping cylinder 3 and be coaxial with the rotating shaft 11, thereby realizing the alignment of the bearing 12 and the rotating shaft 11. Specifically, when the bearing 12 is placed on the second column 10, it is necessary to make the bearing 12 and the rotating shaft 11 coaxial when the second column 10 is rotated to the bottom of the grabbing cylinder 3, so as to ensure that the rotating shaft 11 is accurately inserted into the bearing 12. During the rotation of the turntable 8, centrifugal force will be generated on the bearing 12 placed on the second column 10, which makes it easy for the bearing 12 to have displacement deviation, thereby causing the bearing 12 and the rotating shaft 11 to be not coaxial when the second column 10 is rotated to the bottom of the grabbing cylinder 3. For this reason, in the present invention, a trumpet tube 303 bent outward is integrally provided at the bottom of the grabbing cylinder 3, so that when the bearing 12 is displaced and deviated, the grabbing cylinder 3 drives the rotating shaft 11 to move downward and insert into the bearing 12 During the process, the inner wall of the bell tube 303 first slides against the top of the outer circumference of the bearing 12 to push the deviated bearing 12 to move, so that the bearing 12 enters the inner cavity of the grabbing cylinder 3. Based on the fact that the diameter of the inner cavity of the grabbing cylinder 3 is the same as the diameter of the outer circumference of the bearing 12, the bearing 12 is coaxial with the grabbing cylinder 3 after entering the inner cavity of the grabbing cylinder 3, and the rotating shaft 11 and the grabbing cylinder 3 are also coaxial, so the bearing 12 is coaxial with the rotating shaft 11. In this way, even if the bearing 12 has a displacement deviation, the grabbing cylinder 3 can align the bearing 12 during the process of inserting the rotating shaft 11 into the bearing 12 so that the bearing 12 with a displacement deviation is coaxial with the rotating shaft 11, so that the grabbing cylinder 3 produces an unexpected technical effect during the downward movement.

[0064] In this embodiment, during the insertion of the rotating shaft 11 into the bearing 12, the inner sliding tube 5 elastically slides upward to allow the compression spring 7 to store elastic force. After the assembly of the rotating shaft 11 and the bearing 12 is completed, during the upward movement of the grabbing cylinder 3, the elastic force of the compression spring 7 is released to push the end of the rotating shaft 11 to separate from the multiple arc-shaped spring pieces 4, thereby automatically realizing the separation of the assembled rotating shaft 11 and the grabbing cylinder 3. Specifically, during the process of the rotating shaft 11 being pressed into the bearing 12, the bottom of the inner sliding tube 5 abuts against the bearing 12, causing the inner sliding tube 5 to slide upward continuously, and the sliding of the inner sliding tube 5 continuously compresses the elastic force stored in the compression spring 7. When the rotating shaft 11 is pressed in, the elastic force stored in the compression spring 7 is greater than the friction between the multiple arc-shaped spring pieces 4 and the end of the rotating shaft 11. Therefore, when the grabbing cylinder 3 moves upward, the inner sliding tube 5 generates a downward thrust on the bearing 12 under the action of the elastic force of the compression spring 7. Since the rotating shaft 11 is pressed into the bearing 12, the inner sliding tube 5 pushes the rotating shaft 11 to separate from the multiple arc-shaped spring pieces 4 under the action of the elastic force of the compression spring 7, and finally achieves the purpose of separating the assembled rotating shaft 11 and the bearing 12 from the grabbing cylinder 3. Finally, after the elastic force of the compression spring 7 is released, the inner sliding tube 5 is reset. It can be seen that the present invention can not only reset the inner sliding tube 5 after assembly by setting the compression spring 7, but also unexpectedly drive the inner sliding tube 5 to separate the assembled rotating shaft 11 and bearing 12 from the grabbing cylinder 3 during the resetting process, thereby producing an unexpected technical effect.

[0065] In this embodiment, a second hole 1001 is opened at the center of the second column 10 to enable the rotating shaft 11 to be further inserted into the second hole 1001 during the process of inserting the bearing 12. The diameter of the second hole 1001 is larger than the diameter of the outer circumference of the rotating shaft 11. When the second column 10 fails to successfully place the bearing 12, the rotating shaft 11 is driven by the grasping tube 3 to move downward and insert into the second hole 1001. After the grasping tube 3 moves upward again, the elastic force of the compression spring 7 is released, and the compression spring 7 cannot push the end of the rotating shaft 11 to separate from the multiple arc-shaped spring pieces 4, so that a defective assembly without the bearing 12 will not occur. Specifically, in the prior art, when the shaft 11 is grabbed but the bearing 12 is not successfully placed on the workstation during an assembly cycle, if the pressing mechanism continues to press the shaft 11, a defective assembly without the bearing 12 will appear. In the present invention, the grabbing cylinder 3 uses a special pressing method to press the shaft 11, so that the shaft 11 is pressed into the bearing 12 by the bearing 12, and the inner slide tube 5 is pushed upward to store the elastic force of the compression spring 7. When there is no bearing 12, the bottom of the inner slide tube 5 will not It is in contact with the bearing 12, so that when the grasping cylinder 3 moves up to release the elastic force of the compression spring 7, the inner sliding tube 5 cannot apply force to the rotating shaft 11, and the rotating shaft 11 cannot be separated from the multiple arc-shaped spring pieces 4. When the grasping cylinder 3 moves up, it will drive the rotating shaft 11 to move up synchronously, and then there will be no defective assembly lacking the bearing 12. Unexpectedly, the technical problem of the defective assembly lacking the bearing 12 in the prior art is solved, and the setting of the detection mechanism for detecting whether the assembled assembly is missing parts in the prior art is saved.

[0066] Furthermore, a first socket 901 is opened at the center of the first column 9, and the first socket 901 passes through the top and the bottom of the first column 9. A plurality of supporting spring pieces 902 arranged circumferentially for supporting the rotating shaft 11 are fixedly installed at the bottom of the first socket 901. When the rotating shaft 11 clamped in the grasping cylinder 3 is not separated from the plurality of arc-shaped spring pieces 4 and continues to move downward to grasp the next rotating shaft 11, the rotating shaft 11 clamped in the grasping cylinder 3 presses the rotating shaft 11 on the first column 9 downward so that the rotating shaft 11 on the first column 9 presses the plurality of supporting spring pieces 902 downward to deform and separate from the first column 9, so that the two rotating shafts 11 will not be continuously squeezed and stuck.

[0067] In this embodiment, a second inner groove 801 corresponding to the second column 10 and a first inner groove 802 corresponding to the first column 9 are provided on the top of the turntable 8. The diameter of the second inner groove 801 is larger than the outer diameter of the second column 10, and the diameter of the first inner groove 802 is larger than the outer diameter of the first column 9. The second inner groove 801 and the first inner groove 802 have the same function, which is to easily avoid the trumpet tube 303 when the grabbing tube 3 moves downward. The second column 10 is fixedly installed in the second inner groove 801, and the first column 9 is fixedly installed in the first inner groove 802. The bottom of the first column 9 is provided with an enlarged opening with a diameter larger than the first socket 901, and the enlarged opening passes through the first inner groove 802 so that the rotating shaft 11 presses down multiple supporting spring sheets 902 to deform and pass through the supporting spring sheets 902 so that it can further pass through the turntable 8 and fall down.

[0068] In this embodiment, an oil filling hole 301 is provided on the grabbing cylinder 3, and an opening 505 corresponding to the oil filling hole 301 is provided on the inner sliding tube 5. In the initial state, the oil filling hole 301 and the opening 505 coincide with each other, so that lubricating oil can be easily added to the oil-absorbing cotton 6 through the oil filling hole 301 and the opening 505.

[0069] Second embodiment:

[0070] like Figure 1-10 As shown, a high-efficiency automatic assembly process for a rotating shaft includes the following steps:

[0071] S1: Loading: insert the shaft 11 into the first column 9, and place the bearing 12 on the top of the second column 10;

[0072] S2: Grab the rotating shaft 11: Start the motor 14 to drive the turntable 8 to rotate a specific angle so that the first column 9 with the rotating shaft 11 inserted therein rotates to the bottom of the grabbing cylinder 3, and then start the drive 2 to drive the grabbing cylinder 3 to move vertically downward so that the rotating shaft 11 is inserted into the grabbing cylinder 3. During this process, the rotating shaft 11 first passes through the through hole 503 so that the lubricating oil in the oil-absorbing cotton 6 is smeared on the outer peripheral surface of the rotating shaft 11. As the grabbing cylinder 3 continues to move downward, the end of the rotating shaft 11 is inserted into the insertion groove 302 and is elastically clamped by the multiple arc-shaped spring pieces 4 inserted into the groove 302. Finally, the drive 2 drives the grabbing cylinder 3 to move upward to grab the rotating shaft 11 and separate it from the first column 9;

[0073] S3: Press-in assembly: Start the motor 14 again to drive the turntable 8 to rotate to a specific angle so that the second column 10 with the bearing 12 is rotated to the bottom of the grabbing cylinder 3, and then start the drive 2 again to drive the grabbing cylinder 3 to move vertically downward. The downward movement of the grabbing cylinder 3 drives the rotating shaft 11 to move downward synchronously so that the grabbing cylinder 3 pushes the rotating shaft 11 to insert into the bearing 12 to achieve assembly.

[0074] S4: Reset: After assembly is completed, start the drive 2 to drive the grabbing cylinder 3 to move upward. The elastic force stored in the compression spring 7 is greater than the friction between the multiple arc-shaped spring pieces 4 and the end of the rotating shaft 11. Therefore, when the grabbing cylinder 3 moves upward, the elastic force of the compression spring 7 is released. Under the action of the elastic force of the compression spring 7, the inner sliding tube 5 generates a downward thrust on the bearing 12. Since the rotating shaft 11 is pressed into the bearing 12, the inner sliding tube 5 pushes the rotating shaft 11 to separate from the multiple arc-shaped spring pieces 4 under the action of the elastic force of the compression spring 7, and finally achieves the purpose of separating the assembled rotating shaft 11 and the bearing 12 from the grabbing cylinder 3. Finally, after the elastic force of the compression spring 7 is released, the inner sliding tube 5 is reset.

[0075] In step S3, the diameter of the inner cavity of the grasping cylinder 3 is the same as the diameter of the outer circumference of the bearing 12. A bell tube 303 bent outward is integrally provided at the bottom of the grasping cylinder 3. When the grasping cylinder 3 drives the rotating shaft 11 to move downward and insert into the bearing 12, the inner wall of the bell tube 303 first slides and abuts against the top of the outer circumference of the bearing 12 to enable the bearing 12 to accurately enter the inner cavity of the grasping cylinder 3 and be coaxial with the rotating shaft 11, thereby realizing the alignment of the bearing 12 and the rotating shaft 11. Specifically, since the bearing 12 is placed on the second column 10, it is necessary to make the bearing 12 and the rotating shaft 11 coaxial when the second column 10 is rotated to the bottom of the grabbing cylinder 3, so as to ensure that the rotating shaft 11 is accurately inserted into the bearing 12, and during the rotation of the turntable 8, centrifugal force will be generated on the bearing 12 placed on the second column 10, which makes it easy for the bearing 12 to have displacement deviation, thereby causing the bearing 12 and the rotating shaft 11 to be not coaxial when the second column 10 is rotated to the bottom of the grabbing cylinder 3. For this reason, in the present invention, a trumpet tube 303 bent outward is integrally provided at the bottom of the grabbing cylinder 3, so that when the bearing 12 is displaced and deviates, the grabbing cylinder 3 drives the rotating shaft 11 to move. During the process of the shaft 11 moving downward and inserting into the bearing 12, the inner wall of the bell tube 303 first slides against the top of the outer circumference of the bearing 12 to push the deviated bearing 12 to move, so that the bearing 12 enters the inner cavity of the grabbing cylinder 3. Based on the fact that the diameter of the inner cavity of the grabbing cylinder 3 is the same as the diameter of the outer circumference of the bearing 12, the bearing 12 becomes coaxial with the grabbing cylinder 3 after entering the inner cavity of the grabbing cylinder 3, and the rotating shaft 11 and the grabbing cylinder 3 are also coaxial, so that the bearing 12 and the rotating shaft 11 are coaxial. In this way, even if the bearing 12 has a displacement deviation, the grabbing cylinder 3 can center the bearing 12 during the process of the rotating shaft 11 inserting the bearing 12 so that the bearing 12 with a displacement deviation is coaxial with the rotating shaft 11.

[0076] Among them, in the prior art, when the rotating shaft 11 is grasped but the bearing 12 is not successfully placed on the work station during an assembly cycle, if the pressing mechanism continues to press the rotating shaft 11, a defective assembly lacking the bearing 12 will appear. In the present invention, the grabbing cylinder 3 uses a special pressing method to press the rotating shaft 11, so that the rotating shaft 11 is pushed upward by the bearing 12 during the pressing process of the bearing 12, so that the elastic force of the compression spring 7 is stored. When there is no bearing 12, the bottom of the inner sliding tube 5 will not contact the bearing 12, so that when the grabbing cylinder 3 moves upward to release the elastic force of the compression spring 7, the inner sliding tube 5 cannot apply force to the rotating shaft 11, and the rotating shaft 11 cannot be separated from the multiple arc-shaped spring pieces 4. When the grabbing cylinder 3 moves upward, it will drive the rotating shaft 11 to move upward synchronously, and then there will be no defective assembly lacking the bearing 12, which unexpectedly solves the technical problem of the defective assembly lacking the bearing 12 in the prior art.

[0077] A first socket 901 is provided at the center of the first column 9, and the first socket 901 passes through the top and the bottom of the first column 9. A plurality of supporting spring pieces 902 arranged circumferentially for supporting the rotating shaft 11 are fixedly installed at the bottom of the first socket 901. When the rotating shaft 11 clamped in the grasping cylinder 3 is not separated from the plurality of arc-shaped spring pieces 4 and continues to move downward to grasp the next rotating shaft 11, the rotating shaft 11 clamped in the grasping cylinder 3 presses the rotating shaft 11 on the first column 9 downward so that the rotating shaft 11 on the first column 9 presses the plurality of supporting spring pieces 902 downward to deform and separate from the first column 9, so that the two rotating shafts 11 will not be continuously squeezed and stuck.

[0078] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-efficiency automatic assembly device for a rotating shaft, comprising a turntable (8) driven to rotate by a motor (14), and a drive (2) mounted on a support column (1), characterized in that: A first column (9) for inserting a rotating shaft (11) and a second column (10) for placing a bearing (12) are fixedly mounted on the turntable (8); A grabbing cylinder (3) is fixedly mounted on the power output end of the drive (2), and the motor (14) drives the turntable (8) to rotate so that the first column (9) and the second column (10) are alternately located directly below the grabbing cylinder (3); An inner sliding tube (5) is elastically and slidably arranged in the inner cavity of the grabbing cylinder (3), a through hole (503) is opened at the center of the inner sliding tube (5), the inner wall of the through hole (503) is slidingly fitted with the outer peripheral surface of the rotating shaft (11), the inner sliding tube (5) is filled with oil-absorbing cotton (6), and when the first column (9) is located directly below the grabbing cylinder (3), the rotating shaft (11) penetrates the through hole (503) during the process of the drive (2) driving the grabbing cylinder (3) to move downward, so that the lubricating oil in the oil-absorbing cotton (6) is smeared on the outer peripheral surface of the rotating shaft (11); An insertion groove (302) is provided at the top of the inner cavity of the grasping cylinder (3) for inserting the end of the rotating shaft (11), and a plurality of arc-shaped spring pieces (4) are fixedly installed in the insertion groove (302) and arranged equidistantly in the circumferential direction. After the rotating shaft (11) passes through the through hole (503), the end of the rotating shaft (11) is inserted into the insertion groove (302) and clamped by the plurality of arc-shaped spring pieces (4) so ​​that the grasping cylinder (3) grasps the rotating shaft (11); The rotating shaft (11) is grasped by the grasping cylinder (3) and then moves upward, after which the turntable (8) rotates to rotate the second column (10) to the position directly below the grasping cylinder (3), and then the grasping cylinder (3) moves downward again to push the rotating shaft (11) into the bearing (12).

2. The high-efficiency automatic assembly equipment for a rotating shaft according to claim 1 is characterized in that: The inner sliding tube (5) includes a partition tube (501) fixed inside the inner sliding tube (5) so that the interior of the inner sliding tube (5) is divided into a through hole (503) and an oil receiving chamber (504), wherein the oil receiving chamber (504) is filled with oil absorbing cotton (6), and a plurality of leakage holes (502) are opened on the partition tube (501) so that the oil absorbing cotton (6) can fill the plurality of leakage holes (502).

3. The high-efficiency automatic assembly equipment for a rotating shaft according to claim 1 is characterized in that: A plurality of compression springs (7) arranged equidistantly in the circumferential direction are fixedly installed between the top of the inner sliding tube (5) and the top surface of the inner cavity of the grabbing cylinder (3) to achieve elastic sliding of the inner sliding tube (5).

4. The high-efficiency automatic assembly equipment for a rotating shaft according to claim 1 is characterized in that: When the end of the rotating shaft (11) is clamped by the plurality of arc-shaped spring sheets (4), the bottom height of the outer peripheral surface of the rotating shaft (11) is higher than the bottom height of the inner sliding tube (5) so that the outer peripheral surface of the rotating shaft (11) is evenly coated with lubricating oil. At the same time, when the grabbing cylinder (3) presses the rotating shaft (11) into the bearing (12), the bottom of the inner sliding tube (5) first abuts against the top of the bearing (12) so that the inner sliding tube (5) axially elastically presses and fixes the bearing (12).

5. The high-efficiency automatic assembly equipment for a rotating shaft according to claim 2 is characterized in that: The inner sliding tube (5) is made of a material that is not easily deformed so that when the rotating shaft (11) is pressed into the bearing (12), the inner wall of the through hole (503) and the outer peripheral surface of the rotating shaft (11) are slidably fitted together so that the inner sliding tube (5) supports the rotating shaft (11) and prevents the rotating shaft (11) from generating radial deformation.

6. The high-efficiency automatic assembly equipment for a rotating shaft according to claim 1 is characterized in that: The diameter of the inner cavity of the grasping cylinder (3) is the same as the diameter of the outer peripheral surface of the bearing (12). The bottom of the grasping cylinder (3) is integrally provided with a bell tube (303) bent outward. When the grasping cylinder (3) drives the rotating shaft (11) to move downward and insert into the bearing (12), the inner wall of the bell tube (303) first slides and abuts against the top of the outer peripheral surface of the bearing (12), so that the bearing (12) accurately enters the inner cavity of the grasping cylinder (3) and is coaxial with the rotating shaft (11), thereby realizing the alignment of the bearing (12) and the rotating shaft (11).

7. The high-efficiency automatic assembly equipment for a rotating shaft according to claim 3 is characterized in that: During the process of inserting the rotating shaft (11) into the bearing (12), the inner sliding tube (5) elastically slides upward to allow the compression spring (7) to store elastic force. After the rotating shaft (11) and the bearing (12) are assembled, the elastic force of the compression spring (7) is released during the upward movement of the grabbing cylinder (3) to push the end of the rotating shaft (11) to separate from the plurality of arc-shaped spring sheets (4), thereby automatically realizing the separation of the assembled rotating shaft (11) and the grabbing cylinder (3).

8. The high-efficiency automatic assembly equipment for a rotating shaft according to claim 7 is characterized in that: A second insertion hole (1001) is provided at the center of the second column (10) so that the rotating shaft (11) can be further inserted into the second insertion hole (1001) during the process of inserting the rotating shaft (11) into the bearing (12). The diameter of the second insertion hole (1001) is larger than the diameter of the outer peripheral surface of the rotating shaft (11). When the second column (10) fails to successfully place the bearing (12), the rotating shaft (11) is driven by the grasping cylinder (3) to move downward and insert into the second insertion hole (1001). After the grasping cylinder (3) moves upward again to release the elastic force of the compression spring (7), the compression spring (7) cannot push the end of the rotating shaft (11) to separate from the multiple arc-shaped spring sheets (4), thereby preventing a defective assembly without the bearing (12) from occurring.

9. The high-efficiency automatic assembly equipment for a rotating shaft according to claim 8, characterized in that: A first plug hole (901) is provided at the center of the first column (9), and the first plug hole (901) passes through the top and bottom of the first column (9). A plurality of supporting spring sheets (902) arranged circumferentially for supporting the rotating shaft (11) are fixedly installed at the bottom of the first plug hole (901). When the rotating shaft (11) clamped in the grasping cylinder (3) is not separated from the plurality of arc-shaped spring sheets (4) and continues to move downward to grasp the next rotating shaft (11), the rotating shaft (11) clamped in the grasping cylinder (3) presses the rotating shaft (11) on the first column (9) downward so that the rotating shaft (11) on the first column (9) presses the plurality of supporting spring sheets (902) downward to deform and separate from the first column (9).

10. A high-efficiency automatic assembly process for a rotating shaft, which is based on any high-efficiency automatic assembly equipment for a rotating shaft according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Loading: insert the rotating shaft (11) into the first column (9), and place the bearing (12) on the top of the second column (10); S2: Grab the rotating shaft (11): start the motor (14) to drive the turntable (8) to rotate to a specific angle so that the first column (9) with the rotating shaft (11) inserted therein rotates to the position directly below the grabbing cylinder (3), then start the drive (2) to drive the grabbing cylinder (3) to move vertically downward so that the rotating shaft (11) is inserted into the grabbing cylinder (3). During this process, the rotating shaft (11) first passes through the through hole (503) so that the lubricating oil in the oil-absorbing cotton (6) is smeared on the outer peripheral surface of the rotating shaft (11). As the grabbing cylinder (3) continues to move downward, the end of the rotating shaft (11) is inserted into the insertion groove (302) and is elastically clamped by the multiple arc-shaped spring pieces (4) in the insertion groove (302). Finally, drive (2) drives the grabbing cylinder (3) to move upward so that the rotating shaft (11) is grasped and separated from the first column (9); S3: Press-in assembly: The motor (14) is started again to drive the turntable (8) to rotate to a specific angle so that the second column (10) on which the bearing (12) is placed rotates to the position directly below the grabbing cylinder (3). Then, the drive (2) is started again to drive the grabbing cylinder (3) to move vertically downward. The downward movement of the grabbing cylinder (3) drives the rotating shaft (11) to move downward synchronously so that the grabbing cylinder (3) pushes the rotating shaft (11) to be inserted into the bearing (12) to achieve assembly.

Images