A lifting and rotating mechanism integrating dual lifting and rotating functions

Abstract

This utility model discloses a lifting and rotating mechanism, which includes a support sleeve bearing, a support sleeve shaft, an inner tube, an inner drive shaft, a first lifting power, a second lifting power, and a rotating power. The support sleeve shaft is vertically fitted inside the support sleeve bearing and can slide up and down. The upper end of the support sleeve shaft is provided with an upper end plate for supporting a sealing cover. The inner tube is vertically inserted through the central hole of the support sleeve shaft and can slide up and down. The inner drive shaft is vertically installed in the central hole of the inner tube and can rotate. The upper end of the inner drive shaft is provided with a shaft head for docking with a workpiece fixture. The first lifting power is connected to the support sleeve shaft and can drive the support sleeve shaft to rise and fall. The second lifting power is connected to the inner tube and can drive the inner tube, the inner drive shaft, and the rotating power to rise and fall together. The rotating power is connected to the inner drive shaft and can drive the inner drive shaft to rotate. This utility model's lifting and rotating mechanism integrates dual lifting and rotating functions.

Description

Technical Field

[0001] This utility model belongs to the field of vacuum coating technology, specifically relating to a lifting and rotating mechanism that integrates dual lifting and rotating functions. Background Technology

[0002] The mid-frame of a well-known brand of mobile phones is made of stainless steel and requires ion plating with various colored decorative films that are wear-resistant and scratch-resistant. This mid-frame is an irregularly shaped part, rectangular in shape, with long and short sides. Its outer surface is a vertical plane, while its top and bottom edges are narrow curved edges, and the four corners of the rectangle are rounded. In addition to the traditional imitation rose gold (TiCN) and black (amorphous carbon film), the colors to be plated also include sky blue, emerald green, purplish red, and bluish black. These rich and unique colors can be achieved through two methods: First, a hard, light-colored support layer is first plated, and then two relatively hard transparent or translucent films with high and low refractive indices are selected on top of it. According to the principle of optical interference, multiple overlapping film systems are plated to make it present the desired interference colors (such as sky blue, emerald green, purplish red, etc.). Second, a hard support layer of approximately the desired color (such as black) is first plated, and then two relatively hard transparent or translucent films with high and low refractive indices are selected on top of it. According to the principle of optical interference, multiple overlapping film systems are plated to make it present the desired adjustment interference colors (such as blue). Finally, interference colors (blue) are added to the base color (black) to achieve the desired richer film colors (such as bluish black). Undoubtedly, the two methods mentioned above are a combination of the traditional ion plating decorative film method and the optical interference film plating method. The latter requires strict control of the film thickness of each transparent film layer in order to present accurate colors, but it becomes a problem for irregularly shaped workpieces, such as the mobile phone frame mentioned above.

[0003] Traditional ion plating machines typically use vertical sputtering targets, while the phone's mid-frame is horizontally stacked on a vertically rotating workpiece holder. The sputtering target surface is directly facing the side plane of the phone's mid-frame during deposition. Because the target-substrate distance varies between different points on the mid-frame, the incident angle of the emitted particles relative to the target also varies. Furthermore, the time each point faces the target during the mid-frame's rotation is also different, resulting in varying degrees of mutual obstruction at different points on the mid-frame. This leads to inconsistent film thicknesses in different locations, causing the mid-frame to exhibit different interference colors. Ultimately, the mid-frame will be scrapped due to inconsistent colors.

[0004] To solve these problems, people have tried many methods and come up with a preferred solution: coating a single piece of the phone frame. However, a significant problem with single-piece coating is low production efficiency.

[0005] To overcome the problem of low production efficiency, the inventors envisioned using a multi-chamber vacuum coating production line to continuously coat the mid-frame of mobile phones, thereby improving production efficiency. The multi-chamber vacuum coating production line consists of multiple interconnected chambers, including a coating process chamber.

[0006] However, the coating process chamber needs to accommodate both the transport of the phone's mid-frame and the high-vacuum environment during coating. Therefore, it is envisioned that the middle section of the coating process chamber be used for transporting the phone's mid-frame, while the upper space is used for coating the mid-frame. The mid-frame is lifted to the upper space of the coating process chamber by a mechanism located below the chamber for coating. This mechanism is one of the key structures, as it needs to lift the sealing cover, lift the clamps and the phone's mid-frame, and rotate the clamps and the phone's mid-frame. Therefore, the inventors designed the lifting and rotating mechanism of this invention based on the coating requirements of the phone's mid-frame. Utility Model Content

[0007] The purpose of this invention is to provide a lifting and rotating mechanism that integrates dual lifting and rotating functions.

[0008] The objective of this utility model is achieved through the following technical solution: A lifting and rotating mechanism integrating dual lifting and rotating functions is characterized by comprising a support sleeve bearing, a support sleeve shaft, an inner tube, an inner drive shaft, a first lifting power, a second lifting power, and a rotating power. The support sleeve shaft is vertically fitted inside the support sleeve bearing and can slide up and down. The upper end of the support sleeve shaft is provided with an upper end plate for support under a sealing cover. The inner tube is vertically inserted through the central hole of the support sleeve shaft and can slide up and down. The inner drive shaft is vertically installed in the central hole of the inner tube and can rotate. The upper end of the inner drive shaft is provided with a shaft head for docking with a workpiece fixture. The first lifting power is connected to the support sleeve shaft and can drive the support sleeve shaft to rise and fall. The second lifting power is connected to the inner tube and can drive the inner tube, the inner drive shaft, and the rotating power to rise and fall together. The rotating power is connected to the inner drive shaft and can drive the inner drive shaft to rotate.

[0009] A further technical solution of this utility model is: the middle of the support sleeve bearing is provided with a shaft mounting hole, and the support sleeve shaft is vertically installed in the shaft mounting hole of the support sleeve bearing.

[0010] A further technical solution of this utility model is: an insulating sleeve layer is provided between the inner tube and the support sleeve shaft.

[0011] A further technical solution of this utility model is: the shaft head at the upper end of the inner drive shaft is provided with a mating boss for corresponding insertion into the mating groove under the workpiece fixture.

[0012] A further technical solution of this utility model is as follows: the first lifting power includes a cylinder mounting seat, a cylinder, and a support sleeve shaft mounting plate. The cylinder mounting seat is fixedly connected to one side of the support sleeve shaft seat. The cylinder is vertically mounted on the cylinder mounting seat. The support sleeve shaft mounting plate is horizontally mounted on the piston rod of the cylinder. A first slider is provided at one end of the support sleeve shaft mounting plate. The first slider is slidably connected to the first guide rail on the side of the cylinder mounting seat. The other end of the support sleeve shaft mounting plate is fixedly connected to the lower end of the support sleeve shaft.

[0013] A further technical solution of this utility model is as follows: The second lifting power includes a mounting frame, a lifting servo motor, a lead screw, and an inner tube fixing plate. The mounting frame is fixedly connected to one side of the support sleeve bearing. The lifting servo motor and the lead screw are mounted on the downwardly extending side plate of the mounting frame. The lead screw is in a vertical position and can rotate. The output shaft of the lifting servo motor is connected to one end of the lead screw through a synchronous pulley and a synchronous belt. A nut is provided on the inner tube fixing plate, and the inner tube fixing plate is connected to the lead screw through the nut. A second slider is provided at one end of the inner tube fixing plate, and the second slider is slidably connected to the second guide rail on the side plate of the mounting frame. The other end of the inner tube fixing plate is fixedly connected to the lower end of the inner tube.

[0014] A further technical solution of this utility model is as follows: the rotational power includes a rotational servo motor and a coupling. The rotational servo motor is installed below the inner tube, and the output shaft of the rotational servo motor is connected to the lower end of the inner transmission shaft through the coupling.

[0015] A further technical solution of this utility model is as follows: a first corrugated pipe is provided between the upper end plate and the support sleeve shaft seat. The first corrugated pipe is sleeved around the support sleeve shaft, and the upper and lower ends of the first corrugated pipe are respectively sealed and connected to the upper end plate and the support sleeve shaft seat.

[0016] A further technical solution of this utility model is as follows: a second corrugated pipe is provided between the lower part of the support sleeve shaft and the lower end of the inner pipe. The second corrugated pipe is sleeved around the outer periphery of the inner pipe, and the upper and lower ends of the second corrugated pipe are respectively sealed and connected to the lower part of the support sleeve shaft and the lower end of the inner pipe.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The lifting and rotating mechanism of this utility model is provided with a support sleeve shaft, an inner pipe and an inner transmission shaft nested together, and lifting and rotating are achieved by a first lifting power, a second lifting power and a rotating power respectively, thus realizing both lifting and rotating functions at the same time, and the structure is compact. Attached Figure Description

[0018] Figure 1 This is a cross-sectional schematic diagram of the lifting and rotating mechanism according to an embodiment of the present utility model; Figure 2 for Figure 1 Enlarged view of point C in the middle; Figure 3 for Figure 1 Enlarged view of point D in the middle; Figure 4 for Figure 1 Enlarged view of point E in the middle; Figure 5 This is a schematic diagram of the structure of the upper end plate of the lifting and rotating mechanism according to an embodiment of the present utility model; Figure 6 This is a partial cross-sectional schematic diagram of the lifting and rotating mechanism according to an embodiment of the present utility model; Figure 7 for Figure 6 Enlarged view of point F in the middle; Figure 8 This is a schematic diagram of the structure of the clamp assembly's sealing cover when it is lifted according to an embodiment of the present invention; Figure 9 This is a cross-sectional view of the sealing cover of the clamp assembly in an embodiment of the present invention when it is lifted. Figure 10 This is a cross-sectional schematic diagram of the clamp assembly according to an embodiment of the present utility model; Figure 11 This is a cross-sectional view of the clamp assembly of this utility model being transported to the coating process chamber according to an embodiment of the present utility model. Figure 12 This is a cross-sectional schematic diagram of the lifting and rotating mechanism of the coating process chamber in an embodiment of the present utility model when it is lifted. Figure 13 for Figure 12 Enlarged view of point A in the middle; Figure 14 for Figure 12 Enlarged view of point B in the middle; Figure 15 This is a schematic diagram of the central transport chamber of the coating process compartment in an embodiment of the present invention.

[0019] Meaning of the labels in the attached diagram: 1-Mounting bracket; 2-Support sleeve bearing; 3-Inner drive shaft; 4-Inner connecting pipe; 5-Upper end plate; 6-Flange; 7-First bellows; 8-Lower flange of first bellows; 9-Sealing ring; 10-Support sleeve mounting plate; 11-First slider; 12-Rod end; 13-First guide rail; 14-Cylinder mounting seat; 15-Cylinder; 16-Side plate; 17-Second slider; 18-Nut; 19-Second guide rail; 20-Lifting servo motor; 21-Second synchronous pulley; 22-Second synchronous belt; 23-Screw support fixing seat; 24-Screw; 25-Inner connecting pipe fixing plate; 26-Rotation servo motor; 27-Second bellows; 28-Mating boss; 29-Shaft end; 30-End; 31-Ball bearing; 32-Support sleeve; 33-Insulating sleeve layer 34-Stepped recess; 35-Snap ring; 36-Pressure plate; 37-Annular limiting part; 38-Copper sleeve; 39-Shaft mounting hole; 40-Skeleton oil seal; 41-Locking nut; 42-Upper flange of second bellows; 43-Insulating flange; 44-Coupling; 45-Lower flange of second bellows; 46-Workpiece clamp; 47-Vertical rod; 48-Limiting ring; 49-Pulley seat; 50-Pulley block; 51-Outer ring; 52-Carrying tray; 53-Sealing cover; 54-Bottom edge reinforcing strip; 55-Limiting boss; 56-Support groove; 57-Mating groove; 58-Upper coating chamber; 59-Coating device; 60-Connecting port; 61-Support wheel; 62-Middle transport chamber; 63-Workpiece transport mechanism; 64-Photoelectric sensor; 65-Circular ring with an inclined inner circumference. Detailed Implementation

[0020] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0023] The present invention will be further described below with reference to embodiments. Example

[0024] like Figures 1 to 7 The lifting and rotating mechanism shown in this embodiment integrates dual lifting and rotating functions. It includes a support sleeve bearing 2, a support sleeve shaft 32, an inner pipe 4, an inner transmission shaft 3, a first lifting power, a second lifting power, and a rotating power.

[0025] In this embodiment, the support sleeve bearing 2 is fixedly connected to the lower end face of the bottom plate of the central transport chamber 62, and a shaft mounting hole 39 is provided in the middle of the support sleeve bearing 2. The support sleeve shaft 32 in this embodiment is a hollow short sleeve shaft, vertically installed in the shaft mounting hole 39, and can slide up and down along the shaft mounting hole 39. A skeleton oil seal 40 is provided inside the shaft mounting hole 39, and the skeleton oil seal 40 contacts the outer wall of the support sleeve shaft 32 to form a seal. A copper sleeve 38 is provided at the upper end of the shaft mounting hole 39, and a locking nut 41 is threadedly connected to the lower end, thereby confining the skeleton oil seal 40 within the shaft mounting hole 39 by the locking nut 41.

[0026] An upper end plate 5 is fixedly connected to the upper end of the support sleeve shaft 32. The upper end plate 5 has an upwardly protruding flange 6 around its periphery. During operation, it is supported under the sealing cover 53 by the upper end plate 5 of the support sleeve shaft 32.

[0027] The specific structure of the fixed connection between the upper end plate 5 and the upper end of the support sleeve shaft 32 in this embodiment is as follows: Figure 3 As shown, the lower end face of the central hole of the upper end plate 5 is provided with an annular stepped recess 34. The upper end of the support sleeve shaft 32 is fitted into the stepped recess 34. The upper edge of the support sleeve shaft 32 is fitted with the stepped recess 34 of the upper end plate 5 through an inner ring 65 with an inclined surface embedded in the stepped recess 34. A retaining ring 35 is provided near the upper end face of the support sleeve shaft 32. A pressure plate 36 is bolted to the lower middle part of the upper end plate 5. An annular limiting part 37 is provided on the inner side of the lower part of the pressure plate 36. The annular limiting part 37 is located below the retaining ring 35. The upper end plate 5 and the support sleeve shaft 32 are fixedly connected by the pressure plate 36 tightening the retaining ring 35. By using a beveled inner ring 65 sandwiched in the middle, the connection between the upper plate 5 and the support sleeve shaft 32 is prevented from being too rigid, which would make it difficult to achieve a complete seal when the upper plate is lifted upwards for sealing. This design can achieve a tight seal by fine-tuning the beveled inner ring 65.

[0028] In this embodiment, a first bellows 7 is provided between the upper end plate 5 and the support sleeve bearing 2. The first bellows 7 is sleeved around the support sleeve bearing 32. The upper end of the first bellows 7 is sealed and fixedly connected to the upper end plate 5. The lower end of the first bellows 7 is provided with a first bellows lower flange 8, which is fixedly connected to the upper part of the support sleeve bearing 2 by bolts. A sealing ring 9 is provided between the first bellows lower flange 8 and the upper part of the support sleeve bearing 2, thereby achieving a sealed connection. The first bellows 7 is provided to ensure the sealing of the position between the upper end plate 5 and the support sleeve bearing 2.

[0029] The inner tube 4 is a tube longer than the support sleeve shaft 32. The inner tube 4 is vertically inserted into the central hole of the support sleeve shaft 32, and both its upper and lower ends protrude outside the support sleeve shaft 32. The inner tube 4 can slide up and down in the central hole of the support sleeve shaft 32. An insulating sleeve layer 33 is provided on the inner wall of the support sleeve shaft 32, and the inner tube 4 is insulated from the support sleeve shaft 32 through the insulating sleeve layer 33.

[0030] The inner drive shaft 3 is vertically installed in the central hole of the inner tube 4, and can rotate within the inner tube 4. The upper end of the inner tube 4 has a tubular end cap 30, and the upper end of the inner drive shaft 3 is located within the end cap 30. A ball bearing 31 is installed between the upper end of the inner drive shaft 3 and the end cap 30 to achieve a rotatable connection at the upper end of the inner drive shaft 3. A ball bearing 31 and a skeleton oil seal 40 are installed between the lower end of the inner drive shaft 3 and the lower end of the inner tube 4. The ball bearing 31 achieves a rotatable connection at the lower end, and the skeleton oil seal 40 provides a seal for the rotatable connection.

[0031] A shaft head 29 is bolted to the upper end of the inner drive shaft 3. The shaft head 29 is located above the end 30 of the inner pipe 4. A trapezoidal docking boss 28 is provided on the top of the shaft head 29. A trapezoidal docking groove 57 is provided in the middle of the bottom of the workpiece clamp 46 (the workpiece in this embodiment is the aforementioned irregularly shaped mobile phone frame). During lifting, the docking boss 28 will be inserted into the docking groove 57 to achieve docking.

[0032] The first lifting force is used to drive the support sleeve shaft 32 to rise and fall. In this embodiment, the first lifting force includes a cylinder mounting seat 14, a cylinder 15, and a support sleeve shaft mounting plate 10. The cylinder mounting seat 14 is fixedly connected to one side of the support sleeve shaft seat 2. The cylinder 15 is vertically mounted on the cylinder mounting seat 14. The upper end of the piston rod of the cylinder 15 is provided with a rod end 12. The horizontal support sleeve shaft mounting plate 10 is fixedly connected to the rod end 12. One end of the support sleeve shaft mounting plate 10 is provided with a first slider 11. The first slider 11 is slidably connected to the first guide rail 13 on the side of the cylinder mounting seat 14. The other end of the support sleeve shaft mounting plate 10 is fixedly connected to the lower end of the support sleeve shaft 32. During operation, the support sleeve shaft 32 can be driven to slide up and down by the up and down movement of the piston rod of the cylinder 15.

[0033] The second lifting power is used to drive the inner tube 4, as well as the inner drive shaft 3 on the inner tube 4 and the rotational power to rise and fall together. In this embodiment, the second lifting power includes a mounting frame 1, a lifting servo motor 20, a second synchronous pulley 21, a second synchronous belt 22, a lead screw 24, and an inner tube fixing plate 25. The mounting frame 1 is fixed to one side of the lower end face of the support sleeve bearing 2. A vertically downward side plate 16 is provided on one side of the mounting frame 1. The lifting servo motor 20 is installed at the lower end of the side plate 16. The second synchronous pulley 21 is provided on the output shaft of the lifting servo motor 20. Two upper and lower lead screw support fixing seats 23 are provided on the side of the side plate 16. The upper and lower ends of the lead screw 24 are rotatably connected to the lead screw support fixing seats 23 through bearings. The second synchronous pulley 21 is provided at the lower end of the lead screw 24. The second synchronous pulley 21 on the lead screw 24 is connected to the second synchronous pulley 21 on the lifting servo motor 20 through the second synchronous belt 22. A nut 18 is provided on the inner tube fixing plate 25, which is connected to the lead screw 24 via the nut 18. A second slider 17 is provided at one end of the inner tube fixing plate 25, which is slidably connected to the second guide rail 19 on the side of the side plate 16. The other end of the inner tube fixing plate 25 is fixedly connected to the lower end of the inner tube 4. During operation, the lifting servo motor 20 drives the lead screw 24 to rotate via the second synchronous pulley 21 and the second synchronous belt 22. The rotation of the lead screw 24 drives the intermediate shaft fixing plate 25 to move up and down, thereby driving the inner tube 4 to move up and down.

[0034] In this embodiment, a second bellows 27 is provided between the lower part of the support sleeve shaft 32 and the lower end of the inner pipe 4, and the second bellows 27 is fitted around the outer periphery of the inner pipe 4. The upper and lower ends of the second bellows 27 are respectively provided with an upper flange 42 and a lower flange 45. The upper flange 42 is bolted to the lower part of the support sleeve shaft 32 and sealed with a sealing ring. An insulating flange 43 is provided between the upper flange 42 and the lower part of the support sleeve shaft 32 to achieve insulation between them. The lower flange 45 is bolted to the lower end of the inner pipe 4 and sealed with a sealing ring. The provision of the second bellows 27 ensures a seal between the support sleeve shaft 32 and the inner pipe 4.

[0035] The rotational power is used to drive the inner drive shaft 3 to rotate. In this embodiment, the rotational power includes a rotational servo motor 26 and a coupling 44. The rotational servo motor 26 is installed below the inner tube 4 and moves up and down with the inner tube 4. The output shaft of the rotational servo motor 26 is vertically upward and is connected to the lower end of the inner drive shaft 3 through the coupling 44, so that the rotational servo motor 26 can drive the inner drive shaft 3 to rotate.

[0036] To better understand the function of this lifting and rotating mechanism, the following will describe the fixture assembly used in conjunction with it and the coating process chamber that employs the aforementioned lifting and rotating mechanism: The corresponding fixture components are as follows: Figures 8 to 10 As shown, it includes a transport tray 52, a sealing cover 53, and a workpiece clamp 46. The transport tray 52 is a flat plate with bottom reinforcing strips 54 on both sides. The bottom reinforcing strips 54 on both sides are used to support the workpiece transport mechanism for transport. A vertically upward protruding outer ring 51 is provided in the middle of the upper part of the transport tray 52, and a through hole is provided in the transport tray 52 corresponding to the position of the outer ring 51.

[0037] In this embodiment, the sealing cover 53 is cylindrical with an opening at the top. The sealing cover 53 is housed within the outer ring 51. Four pulley seats 49 are evenly distributed around the center on the outer wall of the sealing cover 53. Each pulley seat 49 has a pulley assembly 50, with the pulleys of the assembly 50 rotatably mounted via horizontal axles. Corresponding grooves are provided on the inner wall of the outer ring 51, with portions of the pulleys protruding from the pulley seats 49 and positioned within the grooves. This structure enables the sealing cover 53 to slide vertically within the outer ring 51. A limiting ring 48 is located near the top of the outer wall of the sealing cover 53, and a limiting boss 55 is located on the inner wall of the outer ring 51. When the sealing cover 53 descends to its lowest point, the limiting ring 48 rests on the limiting boss 55.

[0038] In this embodiment, sealing rings 9 are respectively embedded on the upper and lower edges of the sealing cover 53.

[0039] A clamp support base is provided on the bottom surface of the sealing cover 53. The clamp support base includes two upwardly extending vertical rods 47. The upper end of the vertical rods 47 has a trapezoidal cross-section. The workpiece clamp 46 has two trapezoidal support grooves 56 on its lower surface. The support grooves 56 fit snugly onto the upper end of the vertical rods 47, so that the workpiece clamp 46 is horizontally supported on the upper end of the vertical rods 47. The workpiece clamp 46 can be separated from the vertical rods 47. The workpiece clamp 46 is an existing clamp for holding the middle frame of a mobile phone, so it will not be described in detail here.

[0040] like Figures 11 to 14 As shown, the coating process chamber comprises three parts: an upper coating chamber 58, a middle transport chamber 62, and a lower lifting and rotating mechanism. The upper coating chamber 58 is located above the middle transport chamber 62 and is connected to the middle transport chamber 62 via a connecting port 60. The lifting and rotating mechanism is sealed and connected to the lower part of the middle transport chamber 62. A coating device 59 is installed in the upper coating chamber 58 for coating the workpiece.

[0041] The central transport chamber 62 serves as part of the workpiece transport channel and is used for workpiece transport. During assembly, it connects to the front and rear compartments. Figure 15 As shown, the central transport chamber 62 is a flat rectangular parallelepiped with an opening at the top. A workpiece transport mechanism 63 is installed within the central transport chamber 62. During transport, the fixture assembly is supported on support wheels 61 of the workpiece transport mechanism 63 by bottom reinforcing strips 54 on both sides. The support wheels 61 are driven to rotate by a first motor 65 via a synchronous pulley and belt, and the rotation of the support wheels 61 propels the fixture assembly forward. Photoelectric sensors 64 are also installed at both ends of the central transport chamber 62 to detect when the fixture assembly enters or exits the chamber.

[0042] In this embodiment, the lifting and rotating mechanism is fixedly installed under the central transport chamber 62 via a support sleeve bearing 2. The bottom of the central transport chamber 62 has a through hole corresponding to the lifting and rotating mechanism. The support sleeve bearing 2 of the lifting and rotating mechanism covers the through hole at the bottom of the central transport chamber 62, and the upper edge of the support sleeve bearing 2 is fixedly connected to the lower part of the central transport chamber 62, with a sealing ring forming a seal.

[0043] During the coating process, the workpiece will be clamped in the workpiece fixture 46 of the fixture assembly. When the fixture assembly and the workpiece are transported to the coating process chamber for coating, the fixture assembly and the workpiece will first remain in the central transport chamber 62. Figure 11 As shown. Then, the piston rod of cylinder 15 of the lifting and rotating mechanism extends upward, causing the support sleeve shaft 32 to rise. As the support sleeve shaft 32 rises, the upper end plate 5 will first contact the bottom of the sealing cover 53. The support sleeve shaft 32 continues to rise, driving the sealing cover 53 to rise together, finally causing the top of the sealing cover 53 to press against the top surface of the middle transport chamber 62. At this time, when the sealing cover 53 is fully lifted, the upper end plate 5 covers the bottom of the sealing cover 53, and the top of the flange 6 of the upper end plate 5 will be in contact with the bottom of the sealing cover 53 and press against the sealing ring 9 on the lower edge of the sealing cover 53. At the same time, the upper periphery of the sealing cover 53 is in contact with the top surface of the middle transport chamber 62, and the sealing ring 9 on the sealing cover 53 will press against the top surface of the middle transport chamber 62, forming a seal. The sealing cover 53 seals and covers the connecting port 60. At this time, the sealing cover 53 is clamped between the top surface of the middle transport chamber 62 and the upper end plate 5, forming a stable and reliable seal. After the sealing cover 53 is lifted, the lifting servo motor 20 of the lifting and rotating mechanism is activated. The lifting servo motor 20 drives the inner tube 4 to rise. As the inner tube 4 rises, the mating boss 28 at the upper end of the inner tube 4 will insert into the mating groove 57 below the workpiece fixture 46 to achieve mating. The inner tube 4 continues to rise, causing the workpiece fixture 46 and the workpiece on it to rise together. Finally, the workpiece fixture 46 and the workpiece on it rise together into the upper coating chamber 58. At this point... Figures 12 to 14As shown. After the workpiece fixture 46 and the workpiece are lifted, the servo motor 26 is started to rotate the workpiece fixture 46 and the workpiece together. Then, a high vacuum is drawn into the upper coating chamber 58 by a molecular pump, and the coating device 59 is started to perform coating. After coating is completed, the servo motor 26 is stopped, the inner tube 4 is lowered, and then the support sleeve shaft 32 is lowered. Finally, both the inner tube 4 and the support sleeve shaft 32 are lowered below the support wheel 61 without affecting transportation. The sealing cover 53 is reset, and the workpiece fixture 46 and the workpiece return to the carrier tray 53 of the fixture assembly. After that, the fixture assembly and the workpiece can continue to be transported on the workpiece transport mechanism 63.

[0044] The above embodiments of this utility model are not intended to limit the scope of protection of this utility model. The implementation of this utility model is not limited thereto. All other modifications, substitutions or alterations made to the above structure of this utility model based on the above content of this utility model and in accordance with the common technical knowledge and conventional means in the field, without departing from the basic technical idea of ​​this utility model, shall fall within the scope of protection of this utility model.

Claims

1. A lifting and rotating mechanism integrating dual lifting and rotating functions, characterized in that: The device includes a support sleeve bearing, a support sleeve shaft, an inner connecting pipe, an inner drive shaft, a first lifting power source, a second lifting power source, and a rotational power source. The support sleeve shaft is vertically fitted inside the support sleeve bearing and can slide up and down. The upper end of the support sleeve shaft is provided with an upper end plate for support under a sealing cover. The inner connecting pipe is vertically inserted through the central hole of the support sleeve shaft and can slide up and down. The inner drive shaft is vertically installed in the central hole of the inner connecting pipe and can rotate. The upper end of the inner drive shaft is provided with a shaft head for docking with a workpiece fixture. The first lifting power source is connected to the support sleeve shaft and can drive the support sleeve shaft to rise and fall. The second lifting power source is connected to the inner connecting pipe and can drive the inner connecting pipe, the inner drive shaft, and the rotational power source to rise and fall together. The rotational power source is connected to the inner drive shaft and can drive the inner drive shaft to rotate.

2. The lifting and rotating mechanism integrating dual lifting and rotating functions according to claim 1, characterized in that: The support sleeve bearing has a shaft mounting hole in the middle, and the support sleeve shaft is vertically installed in the shaft mounting hole of the support sleeve bearing.

3. The lifting and rotating mechanism integrating dual lifting and rotating functions according to claim 1, characterized in that: An insulating sleeve is provided between the inner tube and the support sleeve shaft.

4. The lifting and rotating mechanism integrating dual lifting and rotating functions according to claim 1, characterized in that: The upper end of the inner drive shaft is provided with a mating boss for corresponding insertion into the mating groove under the workpiece fixture.

5. The lifting and rotating mechanism integrating dual lifting and rotating functions according to claim 1, characterized in that: The first lifting power includes a cylinder mounting base, a cylinder, and a support sleeve shaft mounting plate. The cylinder mounting base is fixedly connected to one side of the support sleeve shaft base. The cylinder is vertically mounted on the cylinder mounting base. The support sleeve shaft mounting plate is horizontally mounted on the piston rod of the cylinder. A first slider is provided at one end of the support sleeve shaft mounting plate. The first slider is slidably connected to a first guide rail on the side of the cylinder mounting base. The other end of the support sleeve shaft mounting plate is fixedly connected to the lower end of the support sleeve shaft.

6. The lifting and rotating mechanism integrating dual lifting and rotating functions according to claim 1, characterized in that: The second lifting power includes a mounting frame, a lifting servo motor, a lead screw, and an inner tube fixing plate. The mounting frame is fixedly connected to one side of the support sleeve bearing. The lifting servo motor and the lead screw are mounted on the downwardly extending side plate of the mounting frame. The lead screw is in a vertical position and can rotate. The output shaft of the lifting servo motor is connected to one end of the lead screw through a synchronous pulley and a synchronous belt. The inner tube fixing plate is provided with a nut and is connected to the lead screw through the nut. One end of the inner tube fixing plate is provided with a second slider, which is slidably connected to a second guide rail on the side plate of the mounting frame. The other end of the inner tube fixing plate is fixedly connected to the lower end of the inner tube.

7. The lifting and rotating mechanism integrating dual lifting and rotating functions according to claim 1, characterized in that: The rotational power includes a rotational servo motor and a coupling. The rotational servo motor is mounted below the inner tube, and the output shaft of the rotational servo motor is connected to the lower end of the inner transmission shaft through the coupling.

8. The lifting and rotating mechanism integrating dual lifting and rotating functions according to claim 1, characterized in that: A first bellows is provided between the upper end plate and the support sleeve shaft seat. The first bellows is sleeved around the support sleeve shaft, and the upper and lower ends of the first bellows are respectively sealed to the upper end plate and the support sleeve shaft seat.

9. The lifting and rotating mechanism integrating dual lifting and rotating functions according to claim 1, characterized in that: A second corrugated pipe is provided between the lower part of the support sleeve shaft and the lower end of the inner pipe. The second corrugated pipe is sleeved around the outer periphery of the inner pipe, and the upper and lower ends of the second corrugated pipe are respectively sealed and connected to the lower part of the support sleeve shaft and the lower end of the inner pipe.

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