A cap and stud flipping device

Abstract

This utility model relates to a cap nail flipping device, which includes a conveying device and a flipping motor on one side of the conveying device. The flipping motor is rotatably connected to a flipping mechanism, which includes an open receiving space. When stationary at a set angle, the bottom surface of the receiving space corresponds to the conveying plane of the conveying device. The first side of the bottom surface is open to allow the cap nail to enter, and the second side of the bottom surface is open to allow the cap nail to exit. This utility model, by setting a flipping mechanism with an open receiving space, and ensuring that the bottom surface of the receiving space corresponds to the conveying plane of the conveying device when stationary at a set angle, and by setting open structures on the first and second sides of the bottom surface to allow the cap nail to enter and exit, can efficiently cooperate with the conveying device of the production line; and accurately divide the cap nails suitable for subsequent assembly.

Description

Technical Field

[0001] This utility model relates to the field of staples, specifically to a staple flipping device. Background Technology

[0002] In cap stud processing and assembly lines, cap studs often need to have their pin orientation adjusted according to the requirements of subsequent processes, such as changing from an initial pin-up position to a pin-down position to meet precise assembly needs. Currently, the industry mostly uses manual flipping for cap stud orientation adjustment. Operators need to pick up cap studs one by one on the conveyor line and manually flip them, which not only consumes a lot of labor costs, but also suffers from low flipping efficiency and is prone to damage or orientation deviation due to human error, making it difficult to adapt to the high-speed operation requirements of modern production lines.

[0003] Even though some production lines have attempted to introduce automated flipping equipment, existing equipment generally suffers from complex structures and poor compatibility with conveying devices. Most automatic flipping devices have insufficiently enclosed or open structures, making it impossible to precisely align with the conveying plane of the production line. This leads to jamming during the entry and exit of cap nails, and makes it difficult to flexibly adjust the flipping angle according to the cap nail specifications. Consequently, it is impossible to reliably and accurately change the orientation of the nail feet, thus affecting the continuity and processing accuracy of the entire production line. Utility Model Content

[0004] To address the shortcomings of the prior art, this utility model provides a cap nail flipping device.

[0005] The technical solution of this utility model is as follows: A cap flipping device includes a conveying device with a flipping motor on one side. The flipping motor is rotatably connected to a flipping mechanism. The flipping mechanism includes an open receiving space. When stationary at a set angle, the bottom surface of the receiving space corresponds to the conveying plane of the conveying device. A first open side of the bottom surface allows caps to enter, and a second open side allows caps to exit. The bottom surface of the receiving space can be configured using an equal-structure or a ramp-guided auxiliary structure to guide the caps smoothly into it. Caps can automatically enter the receiving space using the conveying force or friction of the conveying device. Furthermore, batch flipping of caps can be achieved by controlling the stop and start of the conveying device. Additionally, an extra pushing device can be used to precisely deliver caps into the receiving space.

[0006] As a preferred embodiment, a magnetic attraction mechanism is provided outside the receiving space for fixing the cap nail inside the receiving space. When the space is stationary at the set angle, the third side of the bottom surface is open. A first pushing mechanism is provided outside the third side. The first pushing mechanism includes a first pushing end for pushing the cap nail inside the receiving space to the outside of the receiving space.

[0007] As a preferred embodiment, the conveying device along the outer side of the first side is provided with a second pushing mechanism, the second pushing mechanism including a second pushing end for pushing the cap pin into the receiving space.

[0008] As a preferred embodiment, the direction of entry of the cap stud on the first side is perpendicular to the direction of exit of the cap stud on the second side, and they are on the same horizontal plane.

[0009] As a preferred embodiment, the flipping mechanism includes a base plate, a connecting end integrally disposed on one side of the base plate, and a top plate installed on the upper side of the connecting end. The top plate is arranged parallel to the base plate, and the inner side of the connecting end away from the flipping motor and opposite to the top plate and the base plate forms the receiving space.

[0010] As a preferred embodiment, a flip seat is provided on the other side of the connecting end. The flip seat has a shaft hole on the side near the flip motor. The flip motor includes an output shaft, and the shaft hole is connected to the output shaft. A protruding end is provided on the other side of the flip seat. The inner side of the connecting end near the flip motor and overlapping with the top plate and bottom plate is used to fix the protruding end.

[0011] As a preferred option, the height of the connecting end is the same as that of the protruding end.

[0012] As a preferred embodiment, the output shaft includes a key located at the end, the key having a first fixed through hole, and the flip seat having a second fixed through hole corresponding to the first fixed through hole.

[0013] As a preferred embodiment, the output shaft passes through the shaft hole and contacts one side of the top plate and bottom plate.

[0014] As a preferred embodiment, the rotating motor is provided with a fixed seat on the side near the connection end, the fixed seat has an output opening at the top, the output shaft passes through the output opening and connects to the rotating seat, the outer periphery of the output through hole is provided with a third fixed through hole for fixed connection of the rotating motor, and the fixed seat has a fourth fixed through hole at the bottom.

[0015] The advantages of this utility model based on the above solution are as follows: 1) This utility model features a flipping mechanism with an open accommodating space, ensuring that the bottom surface of the accommodating space aligns with the conveying plane of the conveying device when stationary at a set angle. Open structures are also provided on the first and second sides of the bottom surface to facilitate the entry and exit of cap nails. This design allows for efficient integration with the conveying device of the production line. It can directly receive cap nails with the nail feet facing upwards, and the rotation of the flipping mechanism causes the cap nails to flip, changing their orientation from nail feet upwards to nail feet downwards, precisely dividing them into flipped cap nails suitable for subsequent assembly. Automatic reception, flipping, and output of cap nails can be achieved without manual intervention, effectively improving cap nail flipping efficiency and avoiding human error. The open accommodating space design also reduces the risk of jamming during cap nail entry and exit, ensuring continuous operation of the production line.

[0016] 2) The magnetic attraction mechanism in this utility model can stably fix the cap nail inside the receiving space after it enters the receiving space, preventing the cap nail from shifting or falling due to centrifugal force or vibration during the flipping process. In conjunction with the first pushing mechanism on the third side, the cap nail can be accurately pushed out of the receiving space to the next process after the flipping is completed, ensuring the accuracy of the cap nail output position. The second pushing mechanism can actively push the cap nail on the conveying device into the receiving space, solving the problem of the cap nail not entering smoothly if it relies solely on the conveying force, and improving the stability and efficiency of the cap nail entering the receiving space.

[0017] 3) In this utility model, the first side cap nail's entry direction is perpendicular to the second side's output direction and is on the same horizontal plane. This design can optimize the production line layout, reduce the space occupied by the device, and make the conveying path before and after the cap nail flipping more reasonable, avoiding collisions or accumulation of cap nails during turning and conveying. By limiting the specific structure of the flipping mechanism, the bottom plate, connecting end, top plate and the protruding end of the flipping seat are reasonably matched, and the height of the connecting end and the protruding end is consistent, making the overall structure of the flipping mechanism more stable, the force is more even during rotation, and the risk of failure caused by structural imbalance is reduced.

[0018] 4) In this utility model, the key of the output shaft and the fixed through hole of the flipping seat cooperate to form a limiting and fixing structure between the shaft and the seat, which effectively prevents the flipping seat from detaching from the output shaft due to centrifugal force when rotating at high speed, thus improving the reliability of the connection between the flipping motor and the flipping mechanism. At the same time, after the output shaft passes through the shaft hole, it contacts one side of the top plate and the bottom plate, further limiting the rotation trajectory of the flipping mechanism and preventing the flipping mechanism from deviating during the flipping process. The third fixed through hole and the fourth fixed through hole respectively realize the stable connection between the flipping motor and the fixed seat, and between the fixed seat and the mounting surface, ensuring that the flipping motor is stable in position when driving the flipping mechanism, reducing the impact of vibration on the flipping accuracy, and improving the overall operating stability and service life of the device. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention. Figure 2 for Figure 1 A magnified view of the structure at the center circle; Figure 3 This is a first perspective structural view of the flipping motor and flipping mechanism of this utility model; Figure 4 This is a second perspective structural view of the flipping motor and flipping mechanism of this utility model; Figure 5 This is a third perspective structural diagram of the flipping motor and flipping mechanism of this utility model; Figure 6This is a half-sectional perspective view of the flipping motor and flipping mechanism of this utility model; Figure 7 This is a three-dimensional structural diagram of the first and second pushing mechanisms of this utility model; In the diagram, 1. Conveying device; 2. Tilting motor; 21. Output shaft; 22. First fixing through hole; 3. Flipping mechanism; 31. Accommodating space; 32. Magnetic attraction mechanism; 33. Base plate; 34. Connecting end; 35. Top plate; 36. Flipping seat; 361. Shaft hole; 362. Protruding end; 37. Second fixing through hole; 4. First pushing mechanism; 41. First pushing end; 42. First cylinder; 5. Second pushing mechanism; 51. Second pushing end; 52. Second cylinder; 53. Servo motor; 6. Fixing base; 61. Output opening; 62. Third fixing through hole; 63. Fourth fixing through hole; 7. Cover nail. Detailed Implementation

[0020] To better understand the purpose, technical solution, and technical effects of this utility model, the following description, in conjunction with the accompanying drawings and embodiments, will provide further explanation. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need further definition and explanation in subsequent drawings. It is also stated that the embodiments described below are only for explaining this utility model and are not intended to limit it.

[0021] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there may be an intermediate component.

[0022] The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is usually placed when in use, or the orientation or positional relationship in which a person skilled in the art would normally understand it, or the orientation or positional relationship in which the product is usually placed when in use. It is only for the purpose of facilitating the description of this application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Example 1

[0023] like Figures 1-7As shown, a cap nail 7 flipping device includes a conveying device 1, a flipping motor 2, a flipping mechanism 3, and a magnetic suction mechanism 32, a first pushing mechanism 4, and a second pushing mechanism 5 to assist in positioning and pushing the cap nail 7.

[0024] The conveying device 1 is a belt conveyor, which is set horizontally to continuously convey the cap nails 7 to be flipped, with the nail feet facing upwards initially. A flipping motor 2 is set on the right side of the conveying device 1. The flipping motor 2 is a planetary reducer, which can achieve precise forward and reverse rotation control. Its output end faces the conveying device 1 and is rotatably connected to the flipping mechanism 3 to provide flipping power for the flipping mechanism 3.

[0025] The flipping mechanism 3 is the core component for flipping the cap nail 7. It includes a base plate 33, a connecting end 34, a top plate 35, and a flipping seat 36. The base plate 33 has a horizontal plate structure. The connecting end 34 is integrally formed on the right edge of the base plate 33 and is perpendicular to the base plate 33. The top plate 35 is fixedly installed on the upper side of the connecting end 34 by bolts. The top plate 35 is parallel to the base plate 33 and has the same size. Together, they form a vertically opposing limiting structure. The side of the connecting end 34 away from the flipping motor 2, i.e., the left side, together with the inner side of the top plate 35 and the base plate 33, forms an open receiving space 31. The size of the receiving space 31 is adapted to the shape of the cap nail 7 or slightly larger than the height of the cap nail 7, ensuring that the cap nail 7 can be stably placed in it.

[0026] When the flipping mechanism 3 is at its initial set angle (0° in this embodiment, i.e., the base plate 33 is horizontal and stationary), the bottom surface of the receiving space 31, i.e., the upper surface of the base plate 33, is at the same height as the conveying plane of the conveying device 1, i.e., the upper surface of the belt conveyor, and they are aligned with each other, thus achieving a smooth transition of the cap nail 7. The first side of the bottom surface of the receiving space 31, i.e., its right side, is completely open to allow the cap nail 7 on the conveying device 1 to enter; the second side of the bottom surface, i.e., its rear side, is also open to provide a channel for the subsequent ejection of the cap nail 7; the third side of the bottom surface, i.e., its front side, is also open at the initial angle to provide space for the cap nail 7 to be ejected.

[0027] To guide the cap nail 7 smoothly into the receiving space 31, in this embodiment, the right edge of the bottom surface of the receiving space 31, i.e. the first side, is also provided with a ramp guide structure—the left edge of the bottom plate 33 is inclined upward to form a 5° ramp. The lower end of the ramp is connected to the conveying plane of the conveying device 1, and the upper end is connected to the inner bottom surface of the receiving space 31. The conveying force of the conveying device 1 or the friction between the cap nail 7 and the belt can assist the cap nail 7 to slide automatically into the receiving space 31. At the same time, the control system of the conveying device 1 can realize the batch conveying of the cap nail 7 by intermittently stopping and starting, and then cooperate with the flipping mechanism 3 to complete the batch flipping of the cap nail 7.

[0028] In addition, to further improve the accuracy of the cap nail 7 entering, a second pushing mechanism 5 is fixedly installed on the conveying device 1 along the outer side of the first side of the receiving space 31 via a bracket. The mechanism includes a second pushing end 51, a cylinder mechanism for moving the second pushing end 51 up and down, and a screw drive mechanism for moving the second pushing end 51 and the second cylinder 52 left and right. The screw drive mechanism is horizontally installed on the upper side of the conveying device 1 via the bracket and is located diagonally above the first side of the receiving space 31. It includes a servo motor 53 and a screw connected to the servo motor 53. The bracket includes a sliding groove, and the screw is located in the middle of the sliding groove. A slide is driven and connected to the screw. One side of the slide is fixedly connected to the second cylinder 52. The top of the second cylinder 52 is provided with a support plate and a drag chain. One end of the drag chain is fixedly set on the rear side of the bracket, and the other end is fixedly connected to the support plate. The bottom of the second cylinder 52 is driven and connected to the second pushing end 51. The air pipe of the second cylinder 52 and the cable of the servo motor 53 are both passed through the drag chain and can move synchronously with the support plate to avoid the pipes from getting tangled or worn.

[0029] A control system is provided that is connected to the servo motor 53 and the second cylinder 52. First, the servo motor 53 is stationary. The second cylinder 52 is started by the external control system. The piston rod of the second cylinder 52 extends so that the second pushing end 51 corresponds to the side of the cap nail 7. Then, the servo motor 53 is started and drives the lead screw to rotate. Through the threaded engagement between the lead screw and the transmission screw hole of the slide, the slide, the support plate and the second cylinder 52 are moved along the sliding groove towards the receiving space 31 until the cap nail 7 is accurately pushed into the receiving space 31. The servo motor 53 can precisely control the rotation angle of the lead screw through pulse signals, thereby realizing millimeter-level adjustment of the movement distance of the support plate. With the downward side stroke of the second cylinder 52, it can be ensured that cap nails of different specifications can be pushed to the center position of the receiving space 31, avoiding the cap nail 7 from getting stuck at the edge of the receiving space 31 due to pushing deviation.

[0030] A magnetic attraction mechanism 32 is fixedly provided on the outer side of the receiving space 31, that is, on the lower surface of the bottom plate in this embodiment. The magnetic attraction mechanism 32 uses a permanent magnet block, which is connected to the top plate 35 by bolts. The position of the magnet block corresponds to the center of the receiving space 31 or directly corresponds to the magnetic attraction of the metal bottom plate 33. When the cover nail 7 enters the receiving space 31, the magnetic attraction mechanism 32 can generate an attraction force. The servo motor 53 in the second pushing mechanism can overcome the attraction force and accurately push the cover nail 7 into it, and stabilize the cover nail 7 on the inner side of the receiving space 31, that is, on the upper surface of the bottom plate 33, so as to prevent the multiple cover nails 7 arranged during the rotation of the flipping mechanism 3 from being displaced or falling off due to centrifugal force or vibration.

[0031] A first pushing mechanism 4 is fixedly installed on the outer side of the third side of the receiving space 31, i.e. the front side of the base plate 33. The control system drives and connects to the first pushing mechanism 4. The first pushing mechanism 4 also uses a first cylinder 42, and its piston rod is fixedly connected to a first pushing end 41. The material of the first pushing end 41 can be the same as that of the second pushing end 51. When the cap nail 7 has finished flipping, the control system drives the piston rod of the first pushing mechanism 4 to extend it. The first pushing end 41 pushes the cap nail 7 in the receiving space 31 to the outside of the receiving space 31, and then it falls into the subsequent conveying or assembly station.

[0032] In this embodiment, the direction of entry of the cap nail 7 on the first side of the accommodating space 31 is equal to the conveying direction of the conveying device 1, which is the left-right direction. The direction of output of the cap nail 7 on the second side is the front-back direction. The two are perpendicular to each other and are on the same horizontal plane along the horizontal plane of the base plate 33. This can greatly optimize the production line layout, reduce the overall space occupied by the device, and make the conveying path connection before and after the cap nail 7 flips more reasonable, avoiding collisions or accumulation of the cap nail 7 when it turns and is conveyed.

[0033] To achieve a stable connection between the flipping mechanism 3 and the flipping motor 2, a flipping seat 36 is fixedly connected to the left side of the connecting end 34 away from the receiving space 31 by bolts. The flipping seat 36 is cylindrical, and a shaft hole 361 is opened on the side of it close to the flipping motor 2. The size of the shaft hole 361 is adapted to the outer diameter of the output shaft 21 of the flipping motor 2. The end of the output shaft 21 of the flipping motor 2 is provided with a shaft key, which is integrally formed with the output shaft 21. Correspondingly, a keyway adapted to the shaft key is opened on the hole wall of the shaft hole 361. During assembly, the output shaft 21 is inserted into the shaft hole 361, and the shaft key is embedded in the keyway to achieve circumferential positioning of the output shaft 21 and the flipping seat 36. Meanwhile, a first fixed through hole 22 is provided on the keyway of the shaft key. The first fixed through hole 22 passes through in a direction perpendicular to the axis of the output shaft 21. A second fixed through hole 37 corresponding to the position of the first fixed through hole 22 is provided on the flip seat 36. The first fixed through hole 22 and the second fixed through hole 37 are connected by bolts and tightened with nuts to form an axial limit between the output shaft 21 and the flip seat 36, effectively preventing the flip seat 36 from detaching from the output shaft 21 due to centrifugal force when rotating.

[0034] The flipping base 36 has a protruding end 362 on the side away from the flipping motor 2. The protruding end 362 is integrally formed with the flipping base 36, and the height of the protruding end 362 is the same as the height of the connecting end 34. The connecting end 34 is close to the flipping motor 2. The inner area of ​​the connecting end 34 that overlaps with the top plate 35 and the bottom plate 33, i.e. the upper and lower ends of the right side of the connecting end 34, is fixedly connected to the protruding end 362 by bolts, so that the flipping base 36 and the connecting end 34 form a stable whole. Since the connecting end 34 and the protruding end 362 are at the same height, the force is more even during the rotation of the flipping mechanism 3, reducing the risk of failure caused by structural imbalance.

[0035] In addition, after the output shaft 21 of the flipping motor 2 passes through the shaft hole 361 of the flipping seat 36, its end contacts the right side of the top plate 35 and the bottom plate 33 of the flipping mechanism 3. The end of the output shaft 21 forms lateral support for the top plate 35 and the bottom plate 33, further limiting the rotation trajectory of the flipping mechanism 3, preventing the flipping mechanism 3 from deviating during the flipping process, and ensuring the flipping accuracy of the cover nail 7.

[0036] A mounting base 6 is provided on the side of the flip motor 2 near the connecting end 34. The mounting base 6 has a "U" shape, and its bottom is fixed to the ground or production line frame with bolts. An output opening 61 is provided at the top. The body of the flip motor 2 is fixedly connected to the inner wall of the mounting base 6 with bolts, and the output shaft 21 passes through the output opening 61 and connects to the flip base 36. A third fixing through hole 62 is provided on the outer circumference of the output shaft 21, arranged radially through the circumference of the output shaft 21. The third fixing through hole 62 is used to fix the output shaft 21 to the body of the flip motor 2 with bolts, ensuring the height of the accommodating space 31 corresponds to that of the conveying device 1 and preventing axial movement of the output shaft 21. A fourth fixing through hole 63 is provided at the bottom of the mounting base 6, extending vertically through the bottom of the mounting base 6. Bolts pass through the fourth fixing through hole 63 to connect the mounting base 6 to the ground or frame, ensuring stable installation of the mounting base 6. This structure ensures the stability of the flip motor 2's position when driving the flip mechanism 3, reduces the impact of vibration on the flipping accuracy, and improves the overall operational stability and service life of the device.

[0037] In this embodiment, the working process of the cap stud 7 flipping device is as follows: The conveying device 1 is activated to convey the cap nail 7, which is to be flipped and has its nail feet facing upwards, to the first side of the receiving space 31; When the conveying device 1 is paused, the second pushing mechanism 5 is activated, pushing the cover nail 7 into the receiving space 31 through the second pushing end 51. The magnetic attraction mechanism 32 gradually attracts the cover nail 7, making it stable and fixed. When the flipping motor 2 is started, it drives the output shaft 21 to rotate, which in turn drives the flipping mechanism 3 to rotate 180°. The angle can be set according to the requirements, so that the cover nail 7 changes from nail feet facing up to nail feet facing down. When the flipping motor 2 stops, the flipping mechanism 3 remains stationary at the current angle, and the first pushing mechanism 4 is activated, pushing the flipped cap nail 7 out of the receiving space 31 through the first pushing end 41 and letting it fall into the subsequent work station; The first pushing mechanism 4 resets, the flipping motor 2 rotates in the opposite direction, driving the flipping mechanism 3 back to the initial angle to prepare for the next flip or to stand still and wait for the next process; at the same time, the conveying device 1 starts to convey the next cap nail 7 to be flipped, and the above process is repeated.

[0038] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A cap pin flipping device, characterized in that, The device is equipped with a conveying device, and a flipping motor is provided on one side of the conveying device. The flipping motor is rotatably connected to a flipping mechanism. The flipping mechanism includes an open receiving space. When the space is stationary at a set angle, the bottom surface of the receiving space corresponds to the conveying plane of the conveying device. The first side of the bottom surface is open to allow the cap nail to enter, and the second side of the bottom surface is open to allow the cap nail to be output.

2. The cap stud flipping device according to claim 1, characterized in that, A magnetic attraction mechanism is provided outside the receiving space for fixing the cap nail inside the receiving space. When the space is stationary at the set angle, the third side of the bottom surface is open. A first pushing mechanism is provided along the third side. The first pushing mechanism includes a first pushing end for pushing the cap nail inside the receiving space to the outside of the receiving space.

3. The cap stud flipping device according to claim 1, characterized in that, The conveying device along the outer side of the first side is provided with a second pushing mechanism, which includes a second pushing end for pushing the cap pin into the receiving space.

4. The cap stud flipping device according to claim 1, characterized in that, The direction in which the cap studs on the first side enters is perpendicular to the direction in which the cap studs on the second side exit, and they are on the same horizontal plane.

5. A cap stud flipping device according to claim 1, characterized in that, The flipping mechanism includes a base plate, a connecting end integrally disposed on one side of the base plate, and a top plate mounted on the upper side of the connecting end. The top plate is arranged parallel to the base plate, and the inner side of the connecting end away from the flipping motor and opposite to the top plate and the base plate forms the receiving space.

6. A cap stud flipping device according to claim 5, characterized in that, A flip seat is provided on the other side of the connecting end. A shaft hole is provided on the side of the flip seat near the flip motor. The flip motor includes an output shaft. The shaft hole is connected to the output shaft. A protruding end is provided on the other side of the flip seat. The inner side of the connecting end near the flip motor and overlapping with the top plate and bottom plate is used to fix the protruding end.

7. A cap stud flipping device according to claim 5, characterized in that, The height of the connecting end is the same as that of the protruding end.

8. A cap stud flipping device according to claim 6, characterized in that, The output shaft includes a key located at the end, the key having a first fixed through hole, and the flip seat having a second fixed through hole corresponding to the first fixed through hole.

9. A cap stud flipping device according to claim 6, characterized in that, The output shaft passes through the shaft hole and contacts one side of the top plate and bottom plate.

10. A cap stud flipping device according to claim 6, characterized in that, The rotating motor has a fixed base on one side near the connection end. The top of the fixed base has an output opening. The output shaft passes through the output opening and connects to the rotating base. The outer periphery of the output through hole is provided with a third fixed through hole for the fixed connection of the rotating motor. The fixed base has a fourth fixed through hole at the bottom.

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