Full-automatic motor stator glue pouring system

Abstract

The invention belongs to the related technical field of motor potting, and particularly discloses a full-automatic motor stator glue pouring system which comprises a workbench, two Y-axis driving mechanisms, an X-axis driving mechanism, a Z-axis driving mechanism and a glue pouring mechanism, the Y-axis driving mechanisms are installed above the two sides of the workbench respectively, and the X-axis driving mechanisms are installed above the two sides of the workbench respectively. An X-axis driving mechanism is jointly erected outside the two Y-axis driving mechanisms through sliding seats installed in a sliding mode, the Z-axis driving mechanism is arranged outside the X-axis driving mechanism, a mounting seat is arranged outside the Z-axis driving mechanism in a sliding mode, a glue filling mechanism is arranged outside the front end of the mounting seat, a positioning sensor is arranged at the bottom of one side of the mounting seat, and a glue filling mechanism is arranged at the bottom of the other side of the mounting seat. A fixing table is arranged on the upper portion of the interior of the workbench and located below the X-axis driving mechanism, a lifting mechanism is arranged at the lower end of the fixing table, and a circular truncated cone is arranged in the fixing table.

Description

Technical Field

[0001] The invention belongs to the technical field related to motor potting, and specifically discloses a full-automatic motor stator glue potting system. Background Art

[0002] Motors are indispensable equipment in modern production, and stator glue injection is a very important part of the motor production process. The function of stator glue injection is to fix the stator coil and prevent it from shifting and vibrating, thereby ensuring the normal operation of the motor and extending its service life.

[0003] Traditional glue pouring technology relies on manual labor, and many bubbles will appear during the glue pouring process. This is the main problem leading to poor glue pouring quality. Therefore, we need to improve it. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the background technology, and to propose a fully automatic motor stator glue filling system, which includes a workbench, a Y-axis drive mechanism, an X-axis drive mechanism, a Z-axis drive mechanism, and a glue filling mechanism. The Y-axis drive mechanism is provided with two groups and is respectively installed above both sides of the workbench. The two groups of Y-axis drive mechanisms are respectively mounted on the outside of the X-axis drive mechanism through sliding seats installed separately. The Z-axis drive mechanism is arranged on the outside of the X-axis drive mechanism, and a mounting seat is slidingly provided on the outside of the Z-axis drive mechanism. The glue filling mechanism is provided on the outside of the front end of the mounting seat, and a positioning sensor is provided on the bottom of one side of the mounting seat. A fixed table is provided above the inside of the workbench and below the X-axis drive mechanism. A lifting mechanism is provided at the lower end of the fixed table. A round table is provided inside the fixed table, and a glue spreading mechanism is provided inside the round table.

[0005] Preferably, the lifting mechanism includes a No. 2 cylinder arranged at each corner of the bottom of the fixed platform, and the bottom of the No. 2 cylinder is installed on the inner upper surface of the workbench.

[0006] Preferably, the glue spreading mechanism includes an arc-shaped guide platform arranged at equal distances along the inner bottom direction of the circular table, the upper surface of one end of the arc-shaped guide platform is provided with an oblique surface, a circular plate is provided above the circular table, and balls are provided at equal distances along the circumferential direction on the bottom of the circular plate. Multiple groups of the balls are in rolling contact with the oblique surface, and inclined sliding mechanisms are provided on both sides of the upper surface of the circular plate.

[0007] Preferably, the oblique sliding mechanism includes a rotating mounting seat arranged on one side of the upper surface of the circular plate, a clamping rod extending from the rotating mounting seat, a connecting arm slidingly sleeved on the outside of the clamping rod, a positioning column provided on the end of the connecting arm away from the clamping rod, a guide mechanism provided on the upper outside of the positioning column, an arc rail provided on the lower outside of the positioning column, the arc rail is fixedly provided on the upper surface of the fixed platform, and a rail groove adapted for the sliding of the positioning column is provided on the upper inside of the arc rail.

[0008] Preferably, the guiding mechanism includes a positioning rod arranged above the outside of the positioning column, the outside of the positioning rod is connected to a guide cylinder through a rotatable rotating joint, the guide cylinder is rotatably provided with a mounting rod at one end away from the rotating joint, and the bottom end of the mounting rod is fixedly provided on the upper surface of the fixed platform and away from the side of the arc rail.

[0009] Preferably, connecting frames are provided on both sides of the outer edge of the circular plate, a clamping plate is provided on the end of the connecting frame away from the circular plate, a stabilizing plate is provided above one side of the outer side of the clamping plate, a No. 2 sensor is provided on the upper surface of one end of the stabilizing plate, a slide is slidably installed on the outside of the clamping plate, and a positioning component is rotatably installed on one side of the inner side of the clamping plate.

[0010] Preferably, the movement assembly includes a support plate rotatably mounted on one side of the inner portion of the slide, a roller is mounted on the lower end of the support plate, and a lifting cylinder is provided on the upper surface of the support plate.

[0011] Preferably, a base frame is provided on the upper surface of the circular plate and near both sides, a push plate is connected to the inside of the base frame through a No. 1 cylinder, an arc-shaped mold is provided on the upper surface of the push plate and near the middle, and a No. 1 sensor is provided on the upper surface of the push plate and near both sides of the edge.

[0012] Preferably, a frame is vertically provided on the upper surface of the circular plate and on one side close to the push plate, and a slider is connected to the bottom inner side of the frame through an electric telescopic cylinder, and the slider is slidably installed on the inner side of the frame, and a No. 3 cylinder is provided inside the slider, and a door frame is fixedly provided at the telescopic end of the No. 3 cylinder, and an annular tube is commonly provided at the lower end of the door frame, and multiple groups of nozzles are connected and installed inside the annular tube, and suction control devices are provided on both sides of the inside of the annular tube, and a controller is provided on the front end side of the workbench.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The Y-axis drive mechanism, X-axis drive mechanism, and Z-axis drive mechanism can assist in controlling the use of the glue pouring mechanism, so that the glue pouring mechanism can accurately control the position of the glue pouring.

[0015] Through the set glue-leveling mechanism, when pouring glue, the reciprocating corresponding pulling of the inclined sliding mechanism can cause the balls at the bottom of the circular plate to roll in contact with the oblique section of the arc guide table during rotation, and the glue is shaken evenly with the asymmetric horizontal planes on both sides, so that the glue enters the stator to reduce the presence of bubbles.

[0016] Through the coordinated work of sensor No. 1, sensor No. 2 and positioning sensor, the actions of each mechanism can be accurately triggered. When the positioning sensor moves with the glue filling mechanism to the sensing range of sensor No. 1, the controller drives two sets of cylinder No. 1 to push the push plate, so that the arc-shaped molds are close to each other and spliced together, fixing the stator to be glued. When sensor No. 2 detects that the glue filling mechanism is ready, the lifting cylinder presses the stabilizing plate upward to ensure that the circular plate is in a horizontal state, providing a stable platform for glue filling.

[0017] The ring tube cooperates with the suction control device through multiple sets of nozzles. It can extend into the inner cavity of the arc mold after the mold is closed, evenly spraying the release agent, significantly improving the demoulding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the overall connection structure of the present invention from another angle;

[0020] Figure 3 Schematic diagram of the connection and separation structure between the circular plate and the fixed platform of the present invention;

[0021] Figure 4 Schematic diagram of the connection structure between the circular plate and the connecting frame of the present invention;

[0022] Figure 5 This is a schematic diagram of the connection structure between the frame and the slider of the present invention;

[0023] Figure 6 This is a schematic structural diagram of the oblique sliding mechanism of the present invention;

[0024] Figure 7 This is a schematic diagram of the connection structure between the mounting base and the glue filling mechanism of the present invention;

[0025] Figure 8 For the present invention Figure 4 A in the middle is an enlarged structural diagram;

[0026] Figure 9 For the present invention Figure 2 Enlarged structural diagram at point B in the middle.

[0027] In the figure: 1. Workbench; 2. Y-axis drive mechanism; 3. Slide; 4. X-axis drive mechanism; 5. Fixed table; 6. No. 1 cylinder; 7. Arc mold; 8. Push plate; 9. Arc rail; 10. Base frame; 11. Mounting seat; 12. Z-axis drive mechanism; 13. Controller; 14. No. 2 cylinder; 15. No. 1 sensor; 16. Round plate; 17. Ball bearing; 18. Arc guide table; 19. Round table; 20. Connecting frame; 21. Slider; 22. Electric telescopic cylinder; 23. Frame; 24. Ring tube; 25. Cylinder No. 3; 26. Door frame; 27. Suction control device; 28. Nozzle; 29. Rotating joint; 30. Mounting rod; 31. Guide cylinder; 32. Clamping rod; 33. Rail groove; 34. Positioning column; 35. Connecting arm; 36. Rotating mounting seat; 37. Glue filling mechanism; 38. Positioning sensor; 39. Lifting cylinder; 40. Stabilizing plate; 41. Sensor No. 2; 42. Clamping plate; 43. Slide; 44. Roller; 45. Support plate. DETAILED DESCRIPTION

[0028] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] like Figures 1-9 The fully automatic motor stator glue filling system shown includes a workbench 1, a Y-axis drive mechanism 2, an X-axis drive mechanism 4, a Z-axis drive mechanism 12, and a glue filling mechanism 37. The Y-axis drive mechanism 2 is provided with two groups and is respectively installed above the two sides of the workbench 1. The two groups of Y-axis drive mechanisms 2 are respectively provided with a sliding seat 3 on the outside to jointly set up the X-axis drive mechanism 4. The Z-axis drive mechanism 12 is provided on the outside of the X-axis drive mechanism 4. A mounting seat 11 is slidably provided on the outside of the Z-axis drive mechanism 12. The glue filling mechanism 37 is provided on the outside of the front end of the mounting seat 11. A positioning sensor 38 is provided on the bottom of one side of the mounting seat 11. A fixed table 5 is provided above the inside of the workbench 1 and below the X-axis drive mechanism 4. A lifting mechanism is provided at the lower end of the fixed table 5. A round table 19 is provided inside the fixed table 5, and a glue spreading mechanism is provided inside the round table 19.

[0031] The Y-axis drive mechanism 2 drives the slide 3 to move synchronously along both sides of the workbench 1. The X-axis drive mechanism 4 drives the Z-axis drive mechanism 12 to move horizontally under the support of the slide 3. The Z-axis drive mechanism 12 controls the vertical lifting of the mounting seat 11. The three-axis linkage realizes the precise positioning of the glue filling mechanism 37 in three-dimensional space.

[0032] The lifting mechanism includes a No. 2 cylinder 14 arranged at each corner of the bottom of the fixed platform 5. The bottom of the No. 2 cylinder 14 is installed on the inner upper surface of the workbench 1, and the No. 2 cylinder 14 lifts at the lower corner of the fixed platform 5.

[0033] The glue spreading mechanism includes an arc-shaped guide platform 18 arranged at equal distances along the inner bottom direction of the circular table 19. The upper surface of one end of the arc-shaped guide platform 18 is provided with an oblique surface. A circular plate 16 is provided above the circular table 19. Balls 17 are provided at equal distances along the circumferential direction at the bottom of the circular plate 16. Multiple groups of balls 17 are in rolling contact with the oblique surface, and inclined sliding mechanisms are provided on both sides of the upper surface of the circular plate 16.

[0034] The oblique sliding mechanism includes a rotating mounting seat 36 arranged on one side of the upper surface of the circular plate 16, and a clamping rod 32 extends from the rotating mounting seat 36. A connecting arm 35 is slidingly sleeved on the outside of the clamping rod 32, and a positioning column 34 is provided on the end of the connecting arm 35 away from the clamping rod 32. A guiding mechanism is provided on the upper part of the positioning column 34, and an arc rail 9 is provided on the lower part of the outside of the positioning column 34. The arc rail 9 is fixedly set on the upper surface of the fixed platform 5, and a rail groove 33 is provided on the upper part of the arc rail 9 to adapt to the sliding of the positioning column 34.

[0035] The guide mechanism includes a positioning rod provided above the exterior of the positioning column 34. The exterior of the positioning rod is connected to a guide cylinder 31 via a rotatable rotation joint 29. The guide cylinder 31 is rotatably provided with a mounting rod 30 at one end away from the rotation joint 29. The bottom end of the mounting rod 30 is fixedly provided on the upper surface of the fixed platform 5 and away from the side of the curved rail 9.

[0036] The guide cylinder 31 drives the rotating joint 29 to retract toward the rear end, causing the positioning column 34 to slide inside the rail groove 33, and the connecting arm 35 pulls the rotating mounting seat 36 at one end, prompting the circular plate 16 to rotate clockwise. When the guide cylinder 31 on one side retracts, the guide cylinder 31 on the other side assists in the driving, and the circular plate 16 rolls on the oblique surface of the arc-shaped guide platform 18 with the help of multiple balls 17 at the lower end, causing the circular plate 16 on the same horizontal plane to tilt in a moving manner, thereby promoting irregular flow of the glue and reducing the generation of bubbles when the glue is poured.

[0037] Connecting frames 20 are provided on both sides of the outer edge of the circular plate 16. A clamping plate 42 is provided on the end of the connecting frame 20 away from the circular plate 16. A stabilizing plate 40 is provided above the outer side of the clamping plate 42. A second sensor 41 is provided on the upper surface of one end of the stabilizing plate 40. A slide 43 is slidably mounted on the outer side of the clamping plate 42. A positioning assembly is rotatably mounted on the inner side of the slide 43.

[0038] The moving assembly includes a support plate 45 rotatably mounted on one side of the inner portion of the slide 43 , a roller 44 is mounted on the lower end of the support plate 45 , and a lifting cylinder 39 is provided on the upper surface of the support plate 45 ;

[0039] In order to cooperate with the oblique sliding of the circular plate 16, the support plate 45 and the roller 44 cooperate with the displacement of the circular plate 16 and roll on the upper surface of the fixed platform 5;

[0040] When the glue pouring mechanism 37 moves to the middle of the circular plate 16, the second sensor 41 receives a signal, and the controller 13 drives the lifting cylinder 39 to press against the stabilizing plate 40. At this time, the stabilizing plate 40 is squeezed to keep the circular plate 16 balanced. At this time, glue pouring can be carried out without overflowing the glue.

[0041] When the circular plate 16 undergoes irregular tilting movement, the sliding cooperation between the clamping plate 42 and the slide 43 can well compensate for the height difference of the circular plate 16. At the same time, because the tilting points of the movement are different, the rotation cooperation between the support plate 45 and the slide 43 can assist in coordinating the movement of the circular plate 16, so as to better shake the glue inside the mold cavity.

[0042] A base frame 10 is provided on the upper surface of the circular plate 16 and near both sides. A push plate 8 is connected to the inside of the base frame 10 through a No. 1 cylinder 6. An arc-shaped mold 7 is provided on the upper surface of the push plate 8 and near the middle. A No. 1 sensor 15 is provided on the upper surface of the push plate 8 and near both sides of the edge.

[0043] The No. 1 sensor 15 receives the signal according to the displacement of the glue filling mechanism 37, and the controller 13 drives the No. 1 cylinder 6 to move toward the front end, causing the push plate 8 to abut against each other, and the two sets of arc-shaped molds 7 are spliced into a cylindrical mold cavity.

[0044] A frame 23 is vertically provided on the upper surface of the circular plate 16 and on one side close to the push plate 8. The bottom inner side of the frame 23 is connected to a slider 21 via an electric telescopic cylinder 22. The slider 21 is slidably mounted on the inner side of the frame 23. A No. 3 air cylinder 25 is provided inside the slider 21. A gantry 26 is fixedly provided at the telescopic end of the No. 3 air cylinder 25. An annular pipe 24 is provided at the lower end of the gantry 26. Multiple groups of nozzles 28 are connected and installed inside the annular pipe 24. Suction control devices 27 are provided on both sides of the annular pipe 24. A controller 13 is provided on the front side of the workbench 1.

[0045] The electric telescopic cylinder 22 drives the slider 21 to move upward, lifting the No. 3 cylinder 25 and the ring tube 24 and other components to a certain height. The No. 3 cylinder 25 drives the gantry 26 to move to the upper end of the two groups of arc-shaped molds 7. The suction control device 27 sucks the release agent inside the ring tube 24, and then when the ring tube 24 penetrates into the interior of the arc-shaped mold 7, the release agent is sprayed on the inner wall of the arc-shaped mold 7 through multiple groups of nozzles 28 to facilitate subsequent demolding.

[0046] It should be noted that the controller 13 is electrically connected to the first sensor 15, the second sensor 41, and the positioning sensor 38, and is connected to an external computing program. The controller 13 controls each driving element. This step is a prior art and will not be described in detail.

[0047] Working principle: When in use, the controller 13 can be connected to an external computer program, and automatically drive the glue filling operation through the position reception of the No. 1 sensor 15, the No. 2 sensor 41, and the positioning sensor 38;

[0048] The two sets of No. 1 cylinders 6 push the push plates 8 to fit together, and the two sets of curved molds 7 are spliced into a column. The electric telescopic cylinder 22 drives the slider 21 to move upward, and lifts the No. 3 cylinder 25 and the ring tube 24 and other components to a certain height. The No. 3 cylinder 25 drives the gantry 26 to move to the upper ends of the two sets of curved molds 7. The suction control device 27 sucks the release agent inside the ring tube 24, and then when the ring tube 24 penetrates into the interior of the curved mold 7, the release agent is sprayed on the inner wall of the curved mold 7 through the multiple sets of nozzles 28 to facilitate subsequent demoulding. Then the stator is placed inside the two sets of curved molds 7 for glue pouring.

[0049] Before glue is poured into the stator, the circular plate 16 needs to be kept in a flat state. The second sensor 41 receives a signal and drives the lifting cylinder 39 to press the stabilizing plate 40, so that the stabilizing plate 40 and the connecting frame 20 lift the circular plate 16 to the same plane. After the first glue pouring is completed, the glue pouring mechanism 37 moves away from the glue pouring position. At this time, the lifting cylinder 39 releases the pressure on the stabilizing plate 40 and retracts toward the lower end. Under the rotation and traction of the two sets of connecting arms 35, the circular plate 16 rolls along the oblique surface of the arc-shaped guide platform 18, causing the circular plate 16 to tilt periodically (one side high and the other side low), driving the glue in the stator to flow irregularly, breaking the surface tension of the bubbles and causing the bubbles to float up and be discharged;

[0050] When the left guide cylinder 31 contracts, the positioning post 34 slides to the left along the rail groove 33, pulling the connecting arm 35 to move to the left, driving the circular plate 16 to rotate clockwise. At the same time, the right guide cylinder 31 extends synchronously, assisting the circular plate 16 to rotate smoothly, and vice versa, to achieve bidirectional tilting and shaking of the circular plate 16 (because the circular plate 16 will produce a height difference during the movement, the sliding sleeve connection of the rotating mounting seat 36 and the connecting arm 35 compensates for the height difference, and when the circular plate 16 rotates, the roller connected to the connecting frame 20 The wheel 44 also rolls on the upper surface of the fixed platform 5, and the connecting frame 20 fluctuates with the height of the circular plate 16, prompting the slide 43 on one side to slide on the side of the clamping plate 42. In order to adapt to the gentle tilt of the circular plate 16, the rotation coordination of the slide 43 and the support plate 45 also assists the shaking movement of the circular plate 16). The irregular tilting movement of the circular plate 16 is caused by the height difference, which serves the purpose of shaking the glue. Then, the above driving steps are repeated for the second glue filling and the second shaking, thereby reducing the generation of bubbles and ensuring the quality of glue filling.

[0051] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the invention as claimed.

Claims

1. A fully automatic motor stator glue filling system, comprising a workbench (1), a Y-axis drive mechanism (2), an X-axis drive mechanism (4), a Z-axis drive mechanism (12), and a glue filling mechanism (37), characterized in that: The Y-axis drive mechanism (2) is provided with two groups and is respectively installed above both sides of the workbench (1). The two groups of the Y-axis drive mechanisms (2) are respectively provided with an X-axis drive mechanism (4) through a sliding seat (3) installed outside. The Z-axis drive mechanism (12) is provided outside the X-axis drive mechanism (4). A mounting seat (11) is slidingly provided outside the Z-axis drive mechanism (12). A glue filling mechanism (37) is provided outside the front end of the mounting seat (11). A positioning sensor (38) is provided at the bottom of one side of the mounting seat (11). A fixed platform (5) is provided above the inside of the workbench (1) and below the X-axis drive mechanism (4). A lifting mechanism is provided at the lower end of the fixed platform (5). A round platform (19) is provided inside the fixed platform (5), and a glue leveling mechanism is provided inside the round platform (19).

2. The fully automatic motor stator glue filling system according to claim 1, characterized in that: The lifting mechanism comprises a No. 2 air cylinder (14) arranged at each corner of the bottom of the fixed platform (5), and the bottom of the No. 2 air cylinder (14) is installed on the inner upper surface of the workbench (1).

3. The fully automatic motor stator glue filling system according to claim 1, characterized in that: The glue spreading mechanism includes an arc-shaped guide platform (18) arranged at equal distances along the inner bottom direction of the circular table (19), an upper side surface of one end of the arc-shaped guide platform (18) is provided with an oblique surface, a circular plate (16) is provided above the circular table (19), and balls (17) are provided at equal distances along the circumferential direction at the bottom of the circular plate (16), multiple groups of balls (17) are in rolling contact with the oblique surface, and oblique sliding mechanisms are provided on both sides of the upper surface of the circular plate (16).

4. The fully automatic motor stator glue filling system according to claim 3, characterized in that: The inclined sliding mechanism includes a rotating mounting seat (36) arranged on one side of the upper surface of the circular plate (16), a clamping rod (32) extending from the rotating mounting seat (36), a connecting arm (35) slidingly sleeved on the outside of the clamping rod (32), a positioning column (34) provided at one end of the connecting arm (35) away from the clamping rod (32), a guiding mechanism provided above the outside of the positioning column (34), an arc-shaped rail (9) provided below the outside of the positioning column (34), the arc-shaped rail (9) fixedly arranged on the upper surface of the fixed platform (5), and a rail groove (33) adapted for the sliding of the positioning column (34) provided above the inside of the arc-shaped rail (9).

5. The fully automatic motor stator glue filling system according to claim 4, characterized in that: The guide mechanism comprises a positioning rod arranged above the outside of the positioning column (34); the outside of the positioning rod is connected to a guide cylinder (31) via a rotatable rotating joint (29); an installation rod (30) is rotatably arranged at one end of the guide cylinder (31) away from the rotating joint (29); the bottom end of the installation rod (30) is fixedly arranged on the upper surface of the fixed platform (5) and away from the side of the arc rail (9).

6. The fully automatic motor stator glue filling system according to claim 3, characterized in that: Connecting frames (20) are provided on both sides of the outer edge of the circular plate (16); a clamping plate (42) is provided at one end of the connecting frame (20) away from the circular plate (16); a stabilizing plate (40) is provided above one side of the outer side of the clamping plate (42); a second sensor (41) is provided on the upper surface of one end of the stabilizing plate (40); a slide (43) is slidably installed on the outer side of the clamping plate (42); and a movement assembly is rotatably installed on one side of the inner side of the slide (43).

7. The fully automatic motor stator glue pouring system according to claim 6, characterized in that: The movement assembly includes a support plate (45) rotatably mounted on one side of the inner portion of the slide (43), a roller (44) is mounted on the lower end of the support plate (45), and a lifting cylinder (39) is provided on the upper surface of the support plate (45).

8. The fully automatic motor stator glue filling system according to claim 3, characterized in that: A base frame (10) is provided on the upper surface of the circular plate (16) and near both sides, and a push plate (8) is connected to the interior of the base frame (10) through a No. 1 cylinder (6). An arc-shaped mold (7) is provided on the upper surface of the push plate (8) and near the middle, and a No. 1 sensor (15) is provided on the upper surface of the push plate (8) and near both side edges.

9. The fully automatic motor stator glue filling system according to claim 8, characterized in that: A frame (23) is vertically provided on the upper surface of the circular plate (16) and on one side close to the push plate (8). The inner bottom of the frame (23) is connected to a slider (21) via an electric telescopic cylinder (22). The slider (21) is slidably installed on the inner side of the frame (23). A No. 3 air cylinder (25) is provided inside the slider (21). A door frame (26) is fixedly provided at the telescopic end of the No. 3 air cylinder (25). An annular tube (24) is provided at the lower end of the door frame (26). Multiple groups of nozzles (28) are connected and installed inside the annular tube (24). Suction control devices (27) are provided on both sides of the annular tube (24). A controller (13) is provided on the front side of the workbench (1).

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