Lifting and rotating mechanism for feeding disc of turret

Abstract

The invention relates to the technical field of machine manufacturing, in particular to a turret feeding disc lifting and rotating mechanism which comprises a workbench, a first servo motor is arranged at the bottom of the workbench, a turret base is fixedly connected to the top of the workbench, a floating shaft is arranged in the turret base, and the workbench is provided with a lifting mechanism through the floating shaft. A second servo motor is arranged at the bottom of the workbench, and the workbench is provided with a rotating mechanism through the second servo motor. By arranging the rotating mechanism and the lifting mechanism, in the rotating lifting process, friction force of a device for guiding is reduced, abrasion is reduced, and the problems that in the long-term use process of lifting rotation depending on a guide column, a groove and the like, the device for providing guiding for rotating lifting is abraded, consequently, the lifting and rotating precision is low, and the service life is long can be solved. And moreover, after the guide device breaks down, frequent replacement is needed, and the working efficiency of the device is reduced.

Description

Technical Field

[0001] This invention relates to the field of mechanical manufacturing technology, specifically to a turret feeding tray lifting and rotating mechanism. Background Technology

[0002] In automated production lines, precision assembly lines, and warehousing and sorting systems, material supply equipment is the core unit that ensures the continuous and efficient operation of the production line. Its performance directly determines the cycle efficiency and processing accuracy of the production line. The turret feeding tray lifting and rotating mechanism is a composite automated feeding device developed on the basis of traditional feeding equipment to meet the precise supply needs of multi-station and multi-specification materials.

[0003] Patent CN115750707A discloses a lifting and rotating mechanism, including two first guide rods, a lead screw, and a lifting and rotating assembly. A lead screw nut is mounted on the lead screw. The lifting and rotating assembly includes a lifting structure, a rotating structure, a base, and a housing. The lifting structure includes a first actuator and a lifting drive gear connected to the first actuator. The rotating structure includes a second actuator and a rotating planetary gear and a sun gear connected to the second actuator. The first actuator drives the lifting drive gear to rotate, which in turn drives the lead screw nut to rotate. The rotation of the lead screw nut causes the base to lift and lower. The rotating planetary gear of the second actuator rotates around the sun gear, causing the housing to rotate left and right relative to the base. This lifting and rotating mechanism uses a double guide rod structure, reducing the swaying of the lifting and rotating assembly during lifting and rotation, and improving the working accuracy of the equipment mounted on the housing.

[0004] However, the above technical solutions still have the following shortcomings: During use, the device relies on guide columns, grooves, etc. for lifting and rotation. Over time, the devices that provide guidance for rotation and lifting will wear out, resulting in low accuracy of lifting and rotation. Furthermore, when the guide devices malfunction, they need to be replaced frequently, reducing the device's working efficiency.

[0005] Therefore, a turret feeding tray lifting and rotating mechanism is proposed to solve the problems mentioned above. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a turret feeding tray lifting and rotating mechanism. By setting up a rotating mechanism and a lifting mechanism, the friction of the guiding device is reduced and wear is decreased during the rotation and lifting process. This solves the problem that relying on guide columns, grooves, etc. for lifting and rotation will cause wear of the guiding device during long-term use, resulting in low lifting and rotation accuracy. Furthermore, when the guiding device fails, it needs to be replaced frequently, reducing the working efficiency of the device.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a workbench is included, a servo motor is provided at the bottom of the workbench, a tower is fixedly connected to the top of the workbench, a floating shaft is provided inside the tower, a lifting mechanism is provided on the workbench through the floating shaft, a servo motor is provided at the bottom of the workbench, and a rotating mechanism is provided on the workbench through the servo motor. The lifting mechanism includes a ball bearing sleeve disposed inside the tower base, at least two elastic steel plates disposed at the bottom of the tower base, and an eccentric linkage mechanism disposed at the bottom of the worktable. The rotating mechanism includes a synchronizer located below the worktable, and an encoder is located on the top of the tower.

[0008] Preferably, the lifting mechanism further includes a rotating shaft block disposed on the outer wall of the floating shaft, a thrust angular contact bearing disposed above the first servo motor, and the input end of the eccentric linkage mechanism is fixedly connected to the output end of the first servo motor.

[0009] Preferably, the output end of the eccentric connecting rod mechanism is fixedly connected to the bottom of the thrust angular contact bearing, one end of the floating shaft extends into the thrust angular contact bearing, and the floating shaft is rotatably connected to the inside of the thrust angular contact bearing.

[0010] Preferably, the inner wall of the ball bearing sleeve is fixedly connected to the outer wall of the floating shaft, and the two elastic steel sheets are symmetrically distributed.

[0011] Preferably, the rotating shaft retaining block is fixedly connected to the outer wall of the floating shaft, and the two elastic steel sheets are fixedly connected to opposite sides of the rotating shaft retaining block at their respective ends.

[0012] Preferably, the rotating mechanism further includes a ball bearing shaft disposed inside the tower base, and the tower base is provided with a deep groove ball bearing.

[0013] Preferably, the output end of the second servo motor is fixedly connected to the input end of the synchronizer, the bottom of the ball bearing shaft passes through the top of the worktable, the ball bearing shaft is rotatably connected to the worktable, the bottom of the ball bearing shaft is fixedly connected to the output end of the synchronizer, and the deep groove ball bearing is rotatably connected to the inner wall of the tower base.

[0014] Preferably, the ball sleeve shaft is sleeved inside the deep groove ball bearing, the ball sleeve shaft is fixedly connected to the deep groove ball bearing, the ball sleeve is slidably connected to the ball sleeve shaft, the ends of the two elastic steel plates that are far apart from each other are fixedly connected to the inner wall of the ball sleeve shaft, the encoder is electrically connected to the first servo motor, and the encoder is electrically connected to the second servo motor.

[0015] Compared with the prior art, the present invention provides a turret feeding tray lifting and rotating mechanism, which has the following beneficial effects: 1. When the floating shaft is raised or lowered, it can be done automatically by the lifting mechanism. In addition, during the lifting process, the friction of the guiding device will be reduced, and wear will not easily occur, which improves the overall working efficiency of the device and allows the device to maintain a working state for a long time.

[0016] 2. When the floating shaft rotates, it can be done automatically through the rotation mechanism. Furthermore, the rotation and lifting can be coordinated to make the device more flexible. During the rotation, the friction of the guiding device also decreases, and wear will not easily occur. Attached Figure Description

[0017] Figure 1 This is a top view of the overall structure of the invention; Figure 2 This is a schematic diagram of the overall bottom structure of the present invention; Figure 3 This is a partial structural schematic diagram of the rotating mechanism of the present invention; Figure 4 This is a cross-sectional schematic diagram of the rotating mechanism of the present invention.

[0018] In the diagram: 1. Workbench; 101. Encoder; 2. Servo motor one; 3. Eccentric connecting rod mechanism; 4. Thrust angular contact bearing; 5. Floating shaft; 6. Tower base; 7. Elastic steel sheet; 8. Shaft retainer; 9. Ball sleeve; 10. Servo motor two; 11. Synchronizer; 12. Ball sleeve shaft; 13. Deep groove ball bearing. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0020] Please see Figure 1 - Figure 4 The turret feeding tray lifting and rotating mechanism in this embodiment includes a worktable 1, a servo motor 2 at the bottom of the worktable 1, a tower base 6 fixedly connected to the top of the worktable 1, a floating shaft 5 inside the tower base 6, a lifting mechanism on the worktable 1 via the floating shaft 5, a servo motor 10 at the bottom of the worktable 1, and a rotating mechanism on the worktable 1 via the servo motor 10. The lifting mechanism includes a ball sleeve 9 installed inside the tower base 6, at least two elastic steel plates 7 installed at the bottom of the tower base 6, and an eccentric linkage mechanism 3 installed at the bottom of the worktable 1. The rotating mechanism includes a synchronizer 11 located below the worktable 1, and an encoder 101 located on the top of the tower 6; When the device needs to be raised or lowered, firstly, servo motor 2 is started. Servo motor 2 then drives the eccentric linkage mechanism 3 to rotate. The eccentric linkage mechanism 3 consists of an eccentric block and a connecting rod. The input end of the eccentric linkage mechanism 3 is one end of the eccentric block, and the output end is the end of the connecting rod furthest from the eccentric block. The principle is that servo motor 2 causes the eccentric block to rotate. As the eccentric block rotates, the angle between the eccentric block and the connecting rod changes. The connecting rod connects to the thrust angular contact bearing 4, which in turn connects to the floating shaft 5. Under the limiting effect of the ball sleeve 9 on the floating shaft 5, the floating shaft 5 does not change position, but the angle between the eccentric block and the connecting rod changes, causing it to begin moving up and down within the tower base 6. When raising and lowering are required in conjunction with rotation, servo motor 10 is started. Servo motor 10 drives the synchronous machine 11 to... The synchronous machine 11 is composed of two synchronous pulleys and a synchronous belt. The principle is as follows: when the servo motor 10 starts, one synchronous pulley begins to rotate. Then, the synchronous belt causes the other synchronous pulley to rotate. The output and input ends of the synchronous machine 11 represent the two synchronous pulleys respectively. At this time, the servo motor 10 drives the synchronous machine 11 to rotate. Under the action of the synchronous machine 11, the ball sleeve shaft 12 rotates. Meanwhile, the floating shaft 5 rotates through the rotation mechanism and rises and falls through the lifting mechanism. That is, the rising, falling, and rotating of the floating shaft 5 are not restricted. Simultaneously, the ball sleeve 9 reduces the friction on the floating shaft 5 during rising and falling. The deep groove ball bearing 13 further reduces friction when the ball sleeve shaft 12 drives the floating shaft 5 to rotate, making it more durable and less prone to damage during use. At this time, the floating shaft 5 is raised and lowered and rotated. The two can be used together without conflict. At the same time, the friction force on the floating shaft 5 is reduced when it is raised and lowered and rotated, so it will not be easily damaged. The structure is simple and highly accurate, and there is no need for staff to frequently maintain the device and replace parts.

[0021] The lifting mechanism also includes a rotating shaft block 8 set on the outer wall of the floating shaft 5, a thrust angular contact bearing 4 set above the servo motor 2, and the input end of the eccentric linkage 3 is fixedly connected to the output end of the servo motor 2. The output end of the eccentric connecting rod mechanism 3 is fixedly connected to the bottom of the thrust angular contact bearing 4, and one end of the floating shaft 5 extends into the thrust angular contact bearing 4. The floating shaft 5 is rotatably connected to the inside of the thrust angular contact bearing 4. The inner wall of the ball sleeve 9 is fixedly connected to the outer wall of the floating shaft 5, and the two elastic steel plates 7 are symmetrically distributed. The rotating shaft retainer 8 is fixedly connected to the outer wall of the floating shaft 5, and the two elastic steel plates 7 are fixedly connected to the opposite sides of the rotating shaft retainer 8 at their respective close ends. Please refer to Figure 2 and Figure 4 When the floating shaft 5 needs to be raised or lowered, firstly, servo motor 2 is started. Servo motor 2 then drives the eccentric block on the eccentric linkage mechanism 3 to rotate. As the eccentric block rotates, the angle between the connecting rod and the eccentric block changes. At this point, the connecting rod on the eccentric linkage mechanism 3 is connected to the thrust angular contact bearing 4, which in turn is connected to the floating shaft 5. The floating shaft 5 is connected to the ball sleeve 9, and the ball sleeve 9 is rotated by the ball sleeve shaft 12. Limited by the ball sleeve 9, the floating shaft 5 will move up and down within the tower base 6. That is, the rotation of the eccentric block on the eccentric linkage mechanism 3 will not change the position of the connecting rod on the eccentric linkage mechanism 3, but it will change the angle between the eccentric block and the connecting rod. At this time, as the servo motor 2 drives the eccentric linkage mechanism 3 to rotate, the thrust angular contact bearing 4 will drive the floating shaft 5 to rise and fall. At this time, the worktable and other objects connected to the floating shaft 5 can be raised and lowered. At this time, the inside of the thrust angular contact bearing 4 and the bottom of the floating shaft 5 are rotating, that is, the thrust... The thrust angular contact bearing 4 drives the floating shaft 5 to rise and fall, and the floating shaft 5 can rotate freely on the thrust angular contact bearing 4. Furthermore, due to the characteristics of the ball sleeve 9, when the ball sleeve 9 limits the floating shaft 5 and slides within the ball sleeve shaft 12, the contact point between the ball sleeve 9 and the ball sleeve shaft 12 is the ball. Therefore, as long as the balls between the ball sleeve 9 and the ball sleeve shaft 12 are lubricated regularly, damage caused by friction can be prevented. When starting the rotating mechanism... When the ball sleeve shaft 12 rotates, the rotation of the ball sleeve shaft 12 will drive the elastic steel sheet 7 to rotate, and the rotation of the elastic steel sheet 7 will drive the shaft clamping block 8 to rotate. At this time, the rotation of the shaft clamping block 8 will cause the floating shaft 5 to rotate with the ball sleeve shaft 12. Furthermore, when the floating shaft 5 moves up and down, due to the characteristics of the elastic steel sheet 7, the up and down movement of the floating shaft 5 will cause the elastic steel sheet 7 to deform. After the floating shaft 5 resets, the elastic steel sheet 7 will also reset. Therefore, the elastic steel sheet 7 will not obstruct the up and down movement of the floating shaft 5. At this time, the floating shaft 5 is moved up and down. During the lifting and lowering process, the friction between the ball sleeve 9 and the ball sleeve shaft 12 is reduced, and there will be no large wear due to frequent work. At the same time, the lifting and lowering of the floating shaft 5 will not affect its rotation.

[0022] The rotating mechanism also includes a ball bearing shaft 12 disposed inside the tower base 6, and a deep groove ball bearing 13 disposed inside the tower base 6; The output end of the servo motor 10 is fixedly connected to the input end of the synchronizer 11. The bottom of the ball sleeve shaft 12 passes through the top of the worktable 1. The ball sleeve shaft 12 is rotatably connected to the worktable 1. The bottom of the ball sleeve shaft 12 is fixedly connected to the output end of the synchronizer 11. The deep groove ball bearing 13 is rotatably connected to the inner wall of the tower base 6. The ball sleeve shaft 12 is fitted inside the deep groove ball bearing 13. The ball sleeve shaft 12 is fixedly connected to the deep groove ball bearing 13. The ball sleeve 9 is slidably connected to the ball sleeve shaft 12. The ends of the two elastic steel plates 7 that are far apart from each other are fixedly connected to the inner wall of the ball sleeve shaft 12. The encoder 101 is electrically connected to the servo motor 12 and the encoder 101 is electrically connected to the servo motor 20. Please refer to Figure 2 , Figure 3 and Figure 4 When the floating shaft 5 rotates, firstly, the servo motor 10 is started. At this time, the servo motor 10 drives one of the synchronous pulleys on the synchronous machine 11 to rotate. As this synchronous pulley rotates, the other synchronous pulley also rotates via the synchronous belt. This rotation of the synchronous pulley causes the ball sleeve shaft 12 to rotate. The ball sleeve shaft 12 and the deep groove ball bearing 13 are fixed; that is, the deep groove ball bearing 13 rotates within the tower base 6 along with the ball sleeve shaft 12. Furthermore, the rotation of the ball sleeve shaft 12 drives the floating shaft 5 to rotate via the elastic steel sheet 7 and the shaft retainer 8, thus completing the rotation of the floating shaft 5. At this time, the contact point between the deep groove ball bearing 13 and the tower base 6 is the ball. Similarly, regularly lubricating these balls can prevent… The wear generated by the deep groove ball bearing 13 and the ball sleeve shaft 12 during rotation with the tower base 6 is reduced, thus reducing the friction generated by the floating shaft 5 during rotation and lowering the wear during operation. The encoder 101 can control the operation of servo motor 12 and servo motor 210. The communication between encoder 101 and servo motor 12 and servo motor 210 achieves closed-loop control to avoid errors. The encoder 101 is model UTOPH-81AWF and consists of a code disk, a light source and photosensitive element, a signal processing circuit, a mounting flange box, a communication interface and cables. The encoder 101 is a well-known and mature technology in the art, so it is not described in detail in this embodiment, nor is it shown in detail in the accompanying drawings. At this time, the floating shaft 5 is rotated, and the rotation and lifting can be performed in coordination. Furthermore, during the rotation and lifting process, the friction is reduced, and wear will not easily occur.

[0023] The installation method, connection method, or setting method disclosed in this embodiment are all common mechanical connections. Any connection method that can achieve its beneficial effect can be implemented, so the specific structural composition and working principle will not be described in detail in this embodiment.

[0024] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A turret feeding tray lifting and rotating mechanism, characterized in that, The system includes a workbench (1), a servo motor (2) at the bottom of the workbench (1), a tower base (6) fixedly connected to the top of the workbench (1), a floating shaft (5) inside the tower base (6), a lifting mechanism of the workbench (1) through the floating shaft (5), a servo motor (10) at the bottom of the workbench (1), and a rotating mechanism of the workbench (1) through the servo motor (10). The lifting mechanism includes a ball sleeve (9) disposed inside the tower base (6), at least two elastic steel plates (7) are disposed at the bottom of the tower base (6), and an eccentric linkage mechanism (3) is disposed at the bottom of the workbench (1). The rotating mechanism includes a synchronizer (11) located below the workbench (1), and an encoder (101) is provided on the top of the tower (6).

2. The turret feeding tray lifting and rotating mechanism according to claim 1, characterized in that, The lifting mechanism also includes a rotating shaft block (8) disposed on the outer wall of the floating shaft (5), a thrust angular contact bearing (4) is disposed above the servo motor (2), and the input end of the eccentric linkage (3) is fixedly connected to the output end of the servo motor (2).

3. The turret feeding tray lifting and rotating mechanism according to claim 2, characterized in that, The output end of the eccentric connecting rod mechanism (3) is fixedly connected to the bottom of the thrust angular contact bearing (4), and one end of the floating shaft (5) extends into the thrust angular contact bearing (4). The floating shaft (5) is rotatably connected to the inside of the thrust angular contact bearing (4).

4. The turret feeding tray lifting and rotating mechanism according to claim 3, characterized in that, The inner wall of the ball sleeve (9) is fixedly connected to the outer wall of the floating shaft (5), and the two elastic steel sheets (7) are symmetrically distributed.

5. The turret feeding tray lifting and rotating mechanism according to claim 4, characterized in that, The rotating shaft block (8) is fixedly connected to the outer wall of the floating shaft (5), and the two elastic steel sheets (7) are fixedly connected to the opposite sides of the rotating shaft block (8) at their respective ends.

6. The turret feeding tray lifting and rotating mechanism according to claim 1, characterized in that, The rotating mechanism also includes a ball bearing shaft (12) disposed inside the tower base (6), and a deep groove ball bearing (13) is disposed inside the tower base (6).

7. The turret feeding tray lifting and rotating mechanism according to claim 6, characterized in that, The output end of the servo motor (10) is fixedly connected to the input end of the synchronizer (11). The bottom of the ball bearing shaft (12) passes through the top of the worktable (1). The ball bearing shaft (12) is rotatably connected to the worktable (1). The bottom of the ball bearing shaft (12) is fixedly connected to the output end of the synchronizer (11). The deep groove ball bearing (13) is rotatably connected to the inner wall of the tower base (6).

8. The turret feeding tray lifting and rotating mechanism according to claim 7, characterized in that, The ball sleeve shaft (12) is sleeved inside the deep groove ball bearing (13). The ball sleeve shaft (12) is fixedly connected to the deep groove ball bearing (13). The ball sleeve (9) is slidably connected to the ball sleeve shaft (12). The ends of the two elastic steel plates (7) that are far apart from each other are fixedly connected to the inner wall of the ball sleeve shaft (12). The encoder (101) is electrically connected to the first servo motor (2). The encoder (101) is electrically connected to the second servo motor (10).

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