Multi-station smart watch surface shell processing device

Abstract

This invention relates to the field of hand skin processing technology, specifically a multi-station intelligent hand skin processing device. It includes a processing table with, in a counter-clockwise direction, loading / unloading stations, a fine carving station, a grinding station, and a cleaning station. It also includes a lifting bracket, which is lifted and positioned on the processing table. A rotating bracket is rotatably mounted on the lifting bracket and has a first motor fixedly mounted thereon. The first motor is drively connected to the rotating bracket. Four arms are arrayed on the rotating bracket, and each arm is equipped with a processing mechanism. The processing mechanism includes a vibrating frame slidably connected to the arm and a convex shaft and a central shaft rotatably connected to the vibrating frame. A spring is installed between the vibrating frame and the arm, and a revolution bracket is rotatably connected to the vibrating frame. The beneficial effect of this invention is that it solves the problem that existing multi-station processing devices cannot provide differentiated, programmable, and complex motion modes for different stations.

Description

Technical Field

[0001] This invention relates to the field of hand shell processing technology, specifically to a multi-station intelligent hand shell processing device. Background Technology

[0002] As a key exterior and structural component of smartwatches, the watch case's processing quality directly affects the product's assembly precision, surface texture, and user experience. A typical watch case manufacturing process includes multiple steps such as CNC engraving, surface grinding, cleaning, and drying, requiring high precision, high surface smoothness, and high cleanliness. To achieve continuous and automated production across multiple processes, multi-station processing devices have emerged in existing technologies. These devices integrate different stations onto a single platform using rotating tables or turntable structures to improve production efficiency. However, existing multi-station watch case processing devices still face several technical challenges in practical applications, as detailed below: Existing equipment lacks the ability to differentiate and coordinate processing motion modes across different workstations. In particular, the grinding and cleaning workstations have drastically different requirements for vibration frequency and rotation mode. Current technologies typically employ a uniform rotational or linear motion, making it difficult to simultaneously meet the dual requirements of efficient grinding and thorough cleaning. Specifically, in the grinding process, the watch case surface needs to have residual burrs, tool marks, and micro-edges removed from CNC machining through the relative motion between the abrasive and the workpiece. The ideal motion mode should be high-frequency vibration combined with variable-angle reciprocating rotation to enhance multi-directional contact between the abrasive and the surface, improving grinding uniformity and efficiency. During the cleaning process, the watch case needs to be cleaned of residual abrasive and cutting fluid while avoiding secondary contamination or surface scratches. The ideal motion mode should be low-frequency vibration combined with alternating speed rotation to facilitate multi-angle, pulsed impact of cleaning fluid and hot air, thereby enhancing the cleaning and drying effect. However, existing multi-station processing devices typically use constant speed rotation or reciprocating motion in a single direction, which cannot provide differentiated, programmable, and complex motion modes for different stations. Although some improvement solutions attempt to introduce vibration or speed change functions in a single station, they mostly rely on independent motors or complex electrical control systems, resulting in limited processing efficiency and processing effect. Based on this, the present invention provides a multi-station intelligent hand skin processing device to solve the problems mentioned in the background art. Summary of the Invention

[0003] This invention addresses the technical problems existing in the prior art by providing a multi-station intelligent hand skin processing device to solve the problems of single motion mode and inability to differentiate control in existing multi-station processing devices.

[0004] The technical solution of this invention to solve the above-mentioned technical problems is as follows: A multi-station smart hand skin processing device, including a processing table, on which loading and unloading stations, a fine engraving station, a grinding and washing station and a cleaning station are arranged sequentially in a counterclockwise direction, and further comprising: The lifting support is mounted on the processing table. A rotating bracket is rotatably mounted on the lifting support and a first motor is fixedly mounted on it. The first motor is connected to the rotating bracket in a transmission. Four arms are arrayed on the rotating bracket, and a processing mechanism is mounted on each arm. The processing mechanism includes a vibratory carrier slidably connected to the boom and a cam shaft and a central shaft rotatably connected to the vibratory carrier. A spring is installed between the vibratory carrier and the boom. A revolution bracket is rotatably connected to the vibratory carrier. A mandrel is coaxially rotatably mounted on the revolution bracket. Both the mandrel and the revolution bracket are connected to the central shaft. Two protrusions are symmetrically mounted on the outer periphery of the cam shaft. The eccentricity of the two protrusions is different. A roller is rotatably mounted on the vibratory carrier. When the cam shaft is driven to rotate, the outer contour surfaces of the two protrusions alternately abut against the roller. A workpiece bracket is rotatably connected to the bottom of the revolution bracket. Both the workpiece bracket and the mandrel are equipped with linkage bevel gears. The two linkage bevel gears are orthogonally meshed. Vacuum suction holes are arrayed on the inner bottom surface of the workpiece bracket. The power distribution unit is configured as follows: At the grinding station, the drive cam rotates at a first speed and drives the central shaft to reciprocate at four different angles. At the cleaning station, the drive cam rotates at a second speed and drives the central shaft to rotate alternately at a third and a fourth speed. Both the grinding tank and the treatment tank are fixedly mounted on the processing table. The inner wall of the treatment tank is provided with an array of spray holes, which are configured to spray high-pressure cleaning fluid or high-pressure hot air. The vacuum positioning unit is configured to adjust the internal pressure of the vacuum suction port.

[0005] Based on the above technical solution, the present invention can be further improved as follows.

[0006] Preferably, a central control unit is fixedly installed on the front end face of the processing table, and the bottom surfaces of the grinding tank and the treatment tank are both connected to a drain ball valve. A guide frame is fixedly installed on the back of the processing table, and a screw lifting module is fixedly installed on the guide frame. The screw lifting module is drivenly connected to the lifting bracket, and the lifting bracket is slidably connected to the guide frame. A first transmission belt is drivenly connected to the output shaft of the first motor, and the first transmission belt is drivenly connected to the rotating hanger.

[0007] Preferably, the processing mechanism further includes a linkage sleeve shaft rotatably connected to the boom, with a first bevel gear mounted on both the linkage sleeve shaft and the central shaft. The two first bevel gears mesh orthogonally. A keying section is fixedly provided on the top of the mandrel. A keying groove with a bottom opening and sliding connection to the keying section is fixedly provided inside the linkage sleeve shaft. A reversing shaft is rotatably mounted on the vibration carrier, with a second bevel gear fixedly mounted on the reversing shaft. A third bevel gear is mounted on both the mandrel and the revolution bracket, with both third bevel gears meshing with the second bevel gear.

[0008] Preferably, the cross-sections of the bonding segment and the bonding groove are both regular hexagons, and the two third bevel gears are symmetrically arranged about the horizontal plane containing the axis of the second bevel gear.

[0009] Preferably, a hot air blower and a cleaning fluid storage tank are fixedly installed on the processing table. A pump body is installed on the cleaning fluid storage tank. A cavity is opened in the processing tank. Each spray hole is connected to the cavity. The air outlet port of the hot air blower and the liquid outlet port of the pump body are connected to a conduit. The other end of each of the two conduits is connected to the cavity from the top of the cavity. A one-way valve is installed in each of the two conduits. The axis of the spray hole is perpendicular to the axis of the processing tank.

[0010] Preferably, the power distribution unit includes a drive sleeve rotatably mounted on a processing table. A second motor is mounted on the processing table, and a second transmission belt is driven to the output shaft of the second motor. The second transmission belt is driven to the drive sleeve. A low-ratio sector gear, a high-ratio sector gear, a rotating wheel, a low-ratio lower gear, and a high-ratio upper gear are fixedly mounted on the drive sleeve. A guide shaft is rotatably mounted on the processing table at positions corresponding to the grinding and cleaning stations. A gear cylinder is rotatably sleeved on each of the two guide shafts. A torsion spring is provided at the rotatable connection between the guide shaft at the grinding station and the processing table, and a reciprocating gear is fixedly mounted on the guide shaft. Along the circumferential direction, four sector gear arc segments are alternately arranged on the rotating wheel. The gear consists of four open-tooth arc segments, each with a different central angle. When the wheel is driven to rotate, the four sector arc segments alternately mesh with reciprocating gears. Rotary gears are fixedly mounted on both gear cylinders. The rotary gear at the grinding station meshes with the high-speed ratio gear, and the rotary gear at the cleaning station meshes with the low-speed ratio gear. Two variable-speed gears are mounted on the directional guide shaft at the cleaning station, meshing with the low-speed ratio sector gear and the high-speed ratio sector gear, respectively. A fourth bevel gear is mounted on both the directional guide shaft and the central shaft, and the two fourth bevel gears mesh with each other. A fifth bevel gear is fixedly mounted on both the cam shaft and the gear cylinder, and the two fifth bevel gears mesh with each other.

[0011] Preferably, the center angles corresponding to the effective meshing arc segments on the low-speed ratio sector gear and the high-speed ratio sector gear are both 120°, and the effective meshing arc segments on the low-speed ratio sector gear and the high-speed ratio sector gear are offset by 180°. The number of teeth and pitch circle radii of the low-speed ratio sector gear, the high-speed ratio sector gear, the low-speed ratio lower gear, and the high-speed ratio upper gear are different from each other.

[0012] Preferably, the vacuum positioning unit includes a vacuum pump fixedly mounted on a lifting bracket, a vacuum tube connected to the vacuum generating port of the vacuum pump, a gas distribution ring fixedly mounted on the rotating bracket, a vacuum tube rotatably connected to the gas distribution ring, a vacuum chamber between the vacuum tube and the gas distribution ring, an array of air holes communicating with the vacuum chamber on the vacuum tube, four valve tubes connected to the gas distribution ring, a first air passage on each of the four mandrels, the other end of each of the four valve tubes communicating with the four first air passages respectively, a first connecting pipe connected to the first air passage fixedly mounted on the revolution bracket, a second air passage and a third air passage opened inside the workpiece bracket, the other end of the first connecting pipe rotatably communicating with the second air passage, a second connecting pipe connected to the second air passage, the other end of the second connecting pipe and each vacuum suction hole communicating with the third air passage.

[0013] Preferably, the rotation axis of the workpiece bracket is perpendicular to the axis of the mandrel, and a solenoid valve and a pressure relief valve are fixedly mounted on the valve pipe.

[0014] The beneficial effects of this invention are: 1. This invention solves the problem that existing multi-station processing devices cannot provide differentiated, programmable, and complex motion modes for different stations through a mechanical transmission design of a single power distribution unit. Specifically, this invention utilizes sector gears with different gear ratios, rotating wheels, and gear sets fixed on the drive sleeve, combined with the independent directional guide shafts and gear cylinder structures of the grinding and cleaning stations, to achieve simultaneous driving of the grinding and cleaning stations with completely different motion modes using only one second motor. In the grinding station, the high-speed gear alternately meshes with the reciprocating gears of the sector gear arc segments with four different center angles on the rotating wheel, and with the reset action of the rotary torsion spring, drives the central shaft to reciprocate at four different angles. At the same time, it drives the cam shaft to rotate at high speed at the first rotation speed, thereby driving... The dynamic vibration carrier achieves high-frequency reciprocating vibration. At the cleaning station, the cam shaft is driven to rotate at a low speed of the second speed by the meshing of the low-speed gear and the rotary gear. At the same time, the low-speed sector gear and the high-speed sector gear, which are set 180° off, alternately mesh with the speed-changing gear to drive the central shaft to rotate alternately at the third and fourth speeds. This purely mechanical power distribution method avoids the problems of large equipment size, complex control logic, and poor synchronization caused by relying on multiple independent motors or complex electrical control systems in the existing technology. It realizes the coordinated output of two very different and highly adaptable processing actions: high-frequency vibration and multi-level variable angle reciprocating rotation at the grinding station and low-frequency vibration and alternating dual-speed rotation at the cleaning station. This significantly improves the coordination and efficiency of multi-station parallel processing.

[0015] 2. This invention solves the problems of uneven grinding, incomplete cleaning, and secondary contamination caused by the single processing action in existing technologies by the dynamic design of multiple components such as the vibrating carrier, cam shaft, central shaft, revolution support, mandrel, and workpiece bracket in the processing mechanism, as well as its systematic coordination with the power distribution unit, vacuum positioning unit, and spray washing and drying unit. Specifically, when the grinding station performs the above-mentioned compound motion, the mandrel and revolution support achieve coaxial and reverse synchronous rotation through the second bevel gear on the reversing shaft, thereby driving the workpiece bracket to simultaneously rotate on its own axis and revolve around the axis of the revolution support. Superimposed on the variable amplitude high-frequency vibration of the vibrating carrier caused by the alternating abutment of the rollers by two unequal eccentricity cams, the watch case forms a complex spatial motion trajectory with multiple dimensions and varying angles in the grinding fluid, enhancing the interaction between the abrasive and the micro-surface of the watch case. The multi-directional contact and shearing action of the texture effectively removes burrs and tool marks left after CNC engraving, significantly improving the uniformity and surface smoothness of the grinding process. At the cleaning station, low-frequency vibration combined with alternating dual-speed rotation allows high-pressure cleaning fluid and high-pressure hot air to impact the surface of the watch case in a pulsed, multi-angle manner from the nozzles vertically sprayed from the inner wall of the treatment tank. This removes residual abrasive and cutting fluid while avoiding cleaning dead zones that may be formed by constant-speed rotation or secondary scratches caused by high-frequency vibration. At the same time, the vacuum positioning unit, through the negative pressure adsorption design that runs through the mandrel, the revolution bracket, and the internal air passage of the workpiece bracket, ensures that the watch case maintains a precise and stable position during the aforementioned complex and intense movements. The nozzle configuration and one-way valve pipeline structure of the treatment tank achieve seamless connection and media isolation between the cleaning and drying processes. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a multi-station intelligent hand skin shell processing device according to the present invention; Figure 2 This is a schematic diagram of the grinding tank and hot air blower of the present invention; Figure 3 For the present invention Figure 2 A magnified schematic diagram of the partial structure at point A in the middle; Figure 4 This is a schematic cross-sectional view of the valve tube and vacuum tube of the present invention; Figure 5 For the present invention Figure 4 A magnified schematic diagram of the local structure at point B; Figure 6 For the present invention Figure 4 A magnified schematic diagram of the local structure at point C; Figure 7 For the present invention Figure 4 A magnified schematic diagram of the local structure at point D; Figure 8 This is a schematic diagram of the structure of the boom and spindle of the present invention; Figure 9This is a schematic diagram of the structure of the drive sleeve of the present invention; Figure 10 For the present invention Figure 9 A front view structural diagram; Figure 11 A schematic diagram of the boom and the high-speed ratio gear; Figure 12 This is a schematic diagram of the structure of the high-speed ratio sector gear and the high-speed ratio upper gear.

[0017] The attached diagram lists the components represented by each number as follows: 1. Processing table; 2. Lifting bracket; 3. Rotating hanger; 4. First motor; 5. Boom; 6. Grinding tank; 7. Treatment tank; 8. Spray nozzle; 9. Cleaning fluid storage tank; 10. Cavity; 11. Conduit; 12. Drive sleeve; 13. Vacuum pump; 14. Hot air blower; 101. Central control unit; 102. Guide frame; 103. Screw lifting module; 501. Vibration carrier; 502. Cam shaft; 503. Central shaft; 504. Spring; 505. Revolution bracket; 506. Mandrel; 507. Protrusion; 508. Roller; 509. Workpiece support; 510. Vacuum suction hole; 511. Linkage sleeve shaft; 512. Reversing shaft; 1201, Second motor; 1202, Low-speed ratio sector gear; 1203, High-speed ratio sector gear; 1204, Rotary wheel; 1205, Low-speed ratio lower gear; 1206, High-speed ratio upper gear; 1207, Directional guide shaft; 1208, Gear cylinder; 1209, Reciprocating gear; 1210, Sector tooth arc segment; 1211, Rotary gear; 1212, Variable speed gear; 1213, Rotary torsion spring; 1301, Vacuum tube; 1302, Gas distribution ring; 1303, Valve tube; 1304, First air passage; 1305, First connecting pipe; 1306, Second air passage; 1307, Third air passage; 1308, Second connecting pipe. Detailed Implementation

[0018] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0019] The present invention provides the following preferred embodiments. like Figure 1-12 As shown, a multi-station smart hand skin processing device includes a processing table 1, on which, in a counterclockwise direction, are sequentially arranged loading and unloading stations, a fine engraving station, a grinding and washing station, and a cleaning station. It also includes: Lifting bracket 2 is lifted and set on processing table 1; In this embodiment, a central control unit 101 is fixedly installed on the front end face of the processing table 1, a guide frame 102 is fixedly installed on the back side of the processing table 1, a vertically arranged screw lifting module 103 is fixedly installed on the guide frame 102, the screw lifting module 103 is connected to the lifting bracket 2 in a transmission connection, and the lifting bracket 2 is slidably connected to the guide frame 102. When switching workstations, the central control unit 101 sends a command to the lead screw lifting module 103, which drives the lifting bracket 2 to make precise vertical lifting movements along the guide frame 102. When the rotating bracket 3 needs to switch workstations, the lifting bracket 2 is raised, which drives all processing mechanisms to be raised synchronously and detached from the tank of the corresponding workstation. After the rotating bracket 3 completes a 90° workstation rotation, the lifting bracket 2 is lowered, so that the shell of the corresponding processing mechanism falls accurately into the grinding tank 6, the treatment tank 7 or is aligned with the fine carving workstation to complete the workstation docking. A rotating bracket 3 is rotatably mounted on the lifting support 2 and a first motor 4 is fixedly mounted thereon. The first motor 4 is connected to the rotating bracket 3 in a transmission manner. In this embodiment, a first transmission belt is connected to the output shaft of the first motor 4 in a transmission manner. The first transmission belt is connected to the rotating bracket 3 in a transmission manner. Four booms 5 are arrayed on the rotating hanger 3, and each boom 5 is equipped with a processing mechanism; The processing mechanism includes a vibratory carrier 501 slidably connected to the boom 5, and a convex shaft 502 and a central shaft 503 rotatably connected to the vibratory carrier 501; In this embodiment, a guide groove is provided on the boom 5, and a guide block that is slidably connected to the guide groove is fixedly installed on the vibration carrier 501. The convex shaft 502 and the central shaft 503 are coaxially arranged, with the convex shaft 502 fitted onto the outside of the central shaft 503; A spring 504 is installed between the vibratory frame 501 and the boom 5. A revolution bracket 505 is rotatably connected to the vibratory frame 501. A spindle 506 is coaxially rotatably mounted on the revolution bracket 505. Both the spindle 506 and the revolution bracket 505 are connected to the central shaft 503 for transmission. In this embodiment, the processing mechanism also includes a linkage sleeve shaft 511 rotatably connected to the arm 5. Both the linkage sleeve shaft 511 and the central shaft 503 are equipped with first bevel gears. The two first bevel gears mesh orthogonally. A keying section is fixedly provided on the top of the spindle 506. A keying groove with a bottom opening and sliding connection with the keying section is fixedly provided inside the linkage sleeve shaft 511. The cross-sections of the keying section and the keying groove are both regular hexagons. The length of the bonding section is greater than the maximum sliding stroke of the vibration carrier 501 to ensure that the bonding section maintains a sliding connection with the bonding groove at any vibration position; A reversing shaft 512 is rotatably mounted on the vibration carrier 501. A second bevel gear is fixedly mounted on the reversing shaft 512. A third bevel gear is mounted on both the spindle 506 and the revolution bracket 505. Both third bevel gears are meshed with the second bevel gear. The two third bevel gears are symmetrically arranged about the horizontal plane containing the axis of the second bevel gear; When the central shaft 503 rotates, the power is transmitted to the linkage sleeve shaft 511 through two orthogonally meshing first bevel gears. The linkage sleeve shaft 511 engages with the keying section at the top of the spindle 506 through an internal regular hexagonal keying groove, thereby driving the spindle 506 to rotate synchronously. When the spindle 506 rotates, it drives the third bevel gear at its lower end to rotate. Through the reversing transmission of the second bevel gear on the reversing shaft 512, it drives another set of third bevel gears symmetrically arranged on the orbital bracket 505 to rotate in the opposite direction, thereby realizing the coaxial and opposite synchronous rotation of the spindle 506 and the orbital bracket 505. While the spindle 506 rotates, it drives the workpiece bracket 509 to rotate around its own axis through the orthogonal meshing linkage bevel gear. The rotation of the revolution bracket 505 then drives the workpiece bracket 509 to revolve around the axis of the revolution bracket 505. Two protrusions 507 are symmetrically mounted on the outer periphery of the convex shaft 502. The eccentricity of the two protrusions 507 is different. A roller 508 is rotatably mounted on the vibrating frame 501. When the convex shaft 502 is driven to rotate, the outer contour surfaces of the two protrusions 507 alternately abut against the roller 508. A workpiece bracket 509 is rotatably connected to the bottom of the revolution bracket 505. Both the workpiece bracket 509 and the spindle 506 are equipped with linkage bevel gears. The two linkage bevel gears mesh orthogonally. Vacuum suction holes 510 are arrayed on the inner bottom surface of the workpiece bracket 509. The rotation axis of the workpiece bracket 509 is perpendicular to the axis of the spindle 506. When the cam shaft 502 is driven to rotate, it drives the two symmetrically mounted cams 507 to rotate synchronously, and the outer contour surfaces of the two cams 507 alternately abut against the rollers 508 on the vibration carrier 501. When the distal end of the protrusion 507 abuts against the roller 508, it pushes the vibratory carrier 501 to slide downward along the boom 5, compressing the spring 504. When the protrusion 507 reaches the position of the roller 508, the spring 504 rebounds and pushes the vibrating carrier 501 to return to its original position. The two protrusions 507 with unequal eccentricity act alternately, causing the vibrating carrier 501 to form two different high-frequency reciprocating vibrations with different amplitudes. During the vibration, the workpiece bracket 509 drives the watch case to vibrate synchronously, and completes the grinding and cleaning operation in conjunction with the rotational motion. The power distribution unit is configured as follows: At the grinding station, the drive cam 502 rotates at a first speed and drives the central shaft 503 to reciprocate at four different angles; At the cleaning station, the drive shaft 502 rotates at a second speed and drives the central shaft 503 to rotate alternately at a third speed and a fourth speed. The power distribution unit includes a drive sleeve 12 rotatably mounted on the processing table 1. A second motor 1201 is mounted on the processing table 1. A second transmission belt is driven to the output shaft of the second motor 1201. The second transmission belt is driven to the drive sleeve 12. The drive sleeve 12 is fixedly equipped with a low-speed ratio sector gear 1202, a high-speed ratio sector gear 1203, a rotating wheel 1204, a low-speed ratio lower gear 1205, and a high-speed ratio upper gear 1206. On the processing table 1, a directional guide shaft 1207 is rotatably installed at the position corresponding to the grinding and cleaning station, and a gear cylinder 1208 is rotatably sleeved on both directional guide shafts 1207. A rotary torsion spring 1213 is provided at the rotational connection between the directional guide shaft 1207 of the grinding station and the processing table 1, and a reciprocating gear 1209 is fixedly mounted on the directional guide shaft 1207. Along the circumferential direction, four sector tooth arc segments 1210 and four empty tooth arc segments are alternately arranged on the rotating wheel 1204. The central angles corresponding to the four sector tooth arc segments 1210 are different. When the rotating wheel 1204 is driven to rotate, the four sector tooth arc segments 1210 alternately mesh with the reciprocating gear 1209. Specifically, in this embodiment, one end of the rotary torsion spring 1213 is fixed on the processing table 1, and the other end is fixed on the directional guide shaft 1207 of the grinding station. When the sector arc segment 1210 of the rotating wheel 1204 meshes with the reciprocating gear 1209 and drives the directional guide shaft 1207 to rotate in the forward direction, the rotary torsion spring 1213 stores energy. When the sector arc segment 1210 disengages, the rotary torsion spring 1213 releases energy, driving the directional guide shaft 1207 to rotate in the opposite direction to reset. Rotary gears 1211 are fixedly mounted on both gear cylinders 1208. The rotary gear 1211 on the grinding station is meshed with the high-speed ratio upper gear 1206, and the rotary gear 1211 on the cleaning station is meshed with the low-speed ratio lower gear 1205. Two speed-changing gears 1212 are installed on the directional guide shaft 1207 of the cleaning station. The two speed-changing gears 1212 are respectively meshed with the low-speed ratio sector gear 1202 and the high-speed ratio sector gear 1203. A fourth bevel gear is installed on both the directional guide shaft 1207 and the central shaft 503. The two fourth bevel gears are adapted to mesh. A fifth bevel gear is fixedly installed on both the cam shaft 502 and the gear cylinder 1208. The two fifth bevel gears are adapted to mesh.

[0020] The center angles corresponding to the effective meshing arcs on the low-ratio sector gear 1202 and the high-ratio sector gear 1203 are both 120°. The effective meshing arcs on the low-ratio sector gear 1202 and the high-ratio sector gear 1203 are offset by 180°. The number of teeth and pitch circle radii of the low-ratio sector gear 1202, the high-ratio sector gear 1203, the low-ratio lower gear 1205, and the high-ratio upper gear 1206 are different from each other. The second motor 1201 drives the drive sleeve 12 to rotate synchronously via the second transmission belt, thereby driving the low-speed ratio sector gear 1202, high-speed ratio sector gear 1203, rotating wheel 1204, low-speed ratio lower gear 1205, and high-speed ratio upper gear 1206 on the sleeve to rotate synchronously. At the grinding station, the high-speed gear 1206 meshes with the corresponding rotating gear 1211, driving the gear cylinder 1208 to rotate. The fifth bevel gear drives the cam shaft 502 to rotate at high speed at the first speed, realizing the high-frequency vibration of the vibration carrier 501. At the same time, the four sector tooth arc segments 1210 with different center angles on the rotating wheel 1204 alternately mesh with the reciprocating gear 1209. With the reset action of the rotary torsion spring 1213, the guide shaft 1207 of the grinding station is driven to achieve reciprocating rotation at four different angles. Then, the central shaft 503 is driven by the fourth bevel gear to make reciprocating swing at the corresponding angle, so as to realize the variable angle reciprocating adjustment during the grinding process of the watch case. At the cleaning station, the low-speed gear 1205 meshes with the corresponding rotating gear 1211, driving the gear cylinder 1208 to rotate. The fifth bevel gear drives the cam shaft 502 to rotate at a low speed of the second rotation speed, thereby realizing the low-frequency vibration of the vibration carrier 501. At the same time, the low-speed ratio sector gear 1202 and the high-speed ratio sector gear 1203, which are set 180° off, alternately mesh with the corresponding high-speed gear 1212, driving the guide shaft 1207 of the cleaning station to rotate alternately at the third speed and the fourth speed. Then, the central shaft 503 is driven to rotate alternately at two speeds through the fourth bevel gear, so as to realize the variable speed rotation operation in the process of cleaning the watch case. The above structure achieves completely differentiated power output for the grinding and washing stations through a single power input of a single second motor 1201. It simultaneously meets the different operational needs of the grinding station (high-frequency vibration and four-speed variable angle reciprocating rotation) and the washing station (low-frequency vibration and pre-alternating dual-speed rotation). This solves the technical problems of existing multi-station processing equipment, such as the need for each station to be independently equipped with a drive motor, complex control logic, poor synchronization, and large equipment size. The grinding tank 6 and the treatment tank 7 are both fixedly mounted on the processing table 1. The inner wall of the treatment tank 7 is provided with an array of spray holes 8, which are configured to spray high-pressure cleaning fluid or high-pressure hot air. A hot air blower 14 and a cleaning fluid storage tank 9 are fixedly installed on the processing table 1. A pump body is installed on the cleaning fluid storage tank 9. A cavity 10 is opened in the processing tank 7. Each spray hole 8 is connected to the cavity 10. The air outlet port of the hot air blower 14 and the liquid outlet port of the pump body are connected to the conduit 11. The other end of the two conduits 11 are connected to the cavity 10 from the top. A one-way valve is installed in each of the two conduits 11. The axis of the spray hole 8 is perpendicular to the axis of the processing tank 7. After the watch case is cleaned and sent into the treatment tank 7 by the processing mechanism, the central control unit 101 first controls the pump to start, and pumps the cleaning fluid in the cleaning fluid tank 9 into the cavity 10 of the treatment tank 7 through the conduit 11. Then, it is sprayed vertically onto the surface of the watch case under high pressure through the spray holes 8 arranged in the inner wall array to complete the high pressure rinsing operation. After rinsing is completed, the pump stops working, the hot air blower 14 starts, and high-pressure hot air is sent into the cavity 10 through the duct 11, and then sprayed vertically onto the surface of the case through the nozzle 8 to complete the hot air drying operation of the case. The one-way valves in the two conduits 11 respectively block the backflow of cleaning fluid and hot air, preventing media crossflow and contamination; The vacuum positioning unit is configured to adjust the internal pressure of the vacuum suction port 510.

[0021] The vacuum positioning unit includes a vacuum pump 13 fixedly mounted on the lifting bracket 2. The vacuum generating port of the vacuum pump 13 is connected to a vacuum tube 1301. A gas distribution ring 1302 is fixedly mounted on the rotating bracket 3. The vacuum tube 1301 is rotatably connected to the gas distribution ring 1302. A vacuum chamber is provided between the vacuum tube 1301 and the gas distribution ring 1302. An array of air holes communicating with the vacuum chamber are opened on the vacuum tube 1301. Four valve tubes 1303 are connected to the gas distribution ring 1302. A solenoid valve and a pressure relief valve are fixedly mounted on the valve tubes 1303. Each of the four spindles 506 has an opening. There is a first air passage 1304, and the other ends of four valve pipes 1303 are respectively connected to the four first air passages 1304. A first connecting pipe 1305 connected to the first air passage 1304 is fixedly installed on the revolution bracket 505. A second air passage 1306 and a third air passage 1307 are opened in the workpiece bracket 509. The other end of the first connecting pipe 1305 is rotatably connected to the second air passage 1306. A second connecting pipe 1308 is connected to the second air passage 1306. The other end of the second connecting pipe 1308 and each vacuum suction hole 510 are connected to the third air passage 1307.

[0022] At the loading and unloading station, the operator places the smart watch face shell on the inner bottom surface of the workpiece bracket 509. The central control unit 101 controls the solenoid valve on the corresponding valve pipe 1303 to open, and the vacuum pump 13 starts. Through the vacuum pipe 1301, the vacuum chamber of the air distribution ring 1302, the valve pipe 1303, the first air passage 1304 in the spindle 506, the first connecting pipe 1305, the second air passage 1306 in the workpiece bracket 509, the second connecting pipe 1308, and the third air passage 1307, the air in the vacuum suction hole 510 is extracted to form a negative pressure vacuum environment, which firmly adsorbs and fixes the watch face shell on the workpiece bracket 509. After processing is completed, the watch case returns to the loading and unloading station, the solenoid valve closes, the pressure relief valve opens, the pressure in the vacuum suction hole 510 returns to normal pressure, the adsorption and fixation on the watch case is released, and the unloading operation is completed. When the rotating bracket 3 rotates to switch positions, the gas distribution ring 1302 is rotatably connected to the vacuum tube 1301 to ensure the airtightness of the vacuum chamber during rotation.

[0023] The specific steps for using this invention are as follows: During the preparation stage, the operator first fills the grinding tank 6 with a water-based alumina precision abrasive suspension adapted to the processing of the smart hand surface shell substrate as a grinding fluid. The abrasive particle size of this grinding fluid is 3μm-5μm, and the pH value of the suspension is controlled at 8.5-9.5. At the same time, a low-foaming environmentally friendly water-based precision metal cleaning agent is added to the cleaning fluid storage tank 9 as a cleaning fluid. This cleaning fluid is based on deionized water, with an effective ingredient mass concentration of 3%-5%, is phosphorus-free and halogen-free, and also has short-term rust prevention performance. Then, the process parameters are preset through the central control unit 101 on the front face of the processing table 1. The first rotational speed of the grinding station cam 502 is set to 1200 r / min, the second rotational speed of the cleaning station cam 502 is set to 240 r / min, the third rotational speed of the cleaning station center shaft 503 alternating between 450 r / min and 150 r / min, the outlet air temperature of the hot air blower 14 is constantly controlled at 65℃, the cleaning time of the high-pressure cleaning fluid in the treatment tank 7 is set to 90s, and the hot air drying time is set to 120s. The loading and unloading stations are equipped with a six-axis robotic arm, which is equipped with a vision positioning module, and the precision carving station is equipped with a CNC machining tool. During the working phase, the central control unit 101 first activates the six-axis robotic arm and vision positioning module at the loading and unloading station. After the watch case to be processed is transported to the designated area of ​​the loading and unloading station via the material tray, the vision positioning module completes the position and posture recognition of the watch case. The six-axis robotic arm grabs the watch case to be processed according to the preset path and accurately places it in the inner bottom positioning area of ​​the corresponding workpiece bracket 509 of the processing mechanism. Subsequently, the central control unit 101 controls the solenoid valve on the corresponding valve pipe 1303 to open, the vacuum pump 13 starts, and the vacuum positioning unit is activated. The vacuum chamber of vacuum tube 1301, gas distribution ring 1302, valve tube 1303, first air passage 1304 in spindle 506, first connecting pipe 1305, second air passage 1306 in workpiece bracket 509, second connecting pipe 1308 and third air passage 1307 are used to extract the air from the vacuum suction holes 510 arrayed on the bottom surface of workpiece bracket 509 to form a negative pressure vacuum environment, which firmly adsorbs and fixes the watch case on workpiece bracket 509. After the loading is completed, the six-axis robotic arm is reset to the standby origin. Subsequently, the central control unit 101 controls the lead screw lifting module 103 to drive the lifting bracket 2 to lift along the guide frame 102, thereby driving all processing mechanisms to lift synchronously away from the corresponding work area. The first motor 4 drives the rotating bracket 3 to complete a 90° station rotation in the counterclockwise direction through the first transmission belt, so that the processing mechanism carrying the watch case to be processed switches to the precision carving station. After the lead screw lifting module 103 drives the lifting bracket 2 to descend and complete the station docking, the CNC machining tool starts according to the preset processing program. First, the watch case reference positioning and processing coordinate system calibration are completed through the contact probe. Then, the internal cavity milling, key hole and crown hole drilling and reaming, external surface precision carving, and assembly slot precision milling processes are executed in sequence to complete the forming and precision dimension processing of the watch case. During the processing, the machine tool simultaneously supplies a small amount of cutting fluid for cooling and chip removal. After the processing is completed, the machine tool spindle and probe are reset. After the CNC engraving is completed, the lifting bracket 2 is raised again, and the rotating bracket 3 continues to rotate 90° counterclockwise, so that the processing mechanism carrying the watch case is switched to the grinding and washing position. The lifting bracket 2 is lowered so that the watch case is completely immersed in the grinding and washing liquid in the grinding and washing tank 6. At this time, the second motor 1201 of the power distribution unit drives the drive sleeve 12 to rotate synchronously through the second transmission belt, which drives the low-speed ratio sector gear 1202, high-speed ratio sector gear 1203, rotating wheel 1204, low-speed ratio lower gear 1205 and high-speed ratio upper gear 1206 on the sleeve to rotate synchronously. At the grinding station, the high-speed gear 1206 meshes with the corresponding rotating gear 1211, driving the gear cylinder 1208 to rotate. The fifth bevel gear drives the cam shaft 502 to rotate at a preset first speed of 1200 r / min. The two cams 507 with different eccentricities on the outer periphery of the cam shaft 502 rotate synchronously. Their outer contour surfaces alternately abut against the rollers 508 on the vibrating frame 501. With the help of the spring 504 between the vibrating frame 501 and the arm 5, the vibrating frame 501 is driven to form two different high-frequency reciprocating vibrations. At the same time, the four sector tooth arc segments 1210 with different center angles on the rotating wheel 1204 alternately mesh with the reciprocating gear 1209. With the help of the reset action of the rotary torsion spring 1213, the directional guide shaft 1207 of the grinding station is driven to achieve reciprocating rotation at four different angles. Then, the fourth bevel gear drives the central shaft 503 to perform reciprocating oscillation at the corresponding angle. When the central shaft 503 rotates, it transmits power to the linkage sleeve shaft 511 through two orthogonally meshing first bevel gears. The linkage sleeve shaft 511 engages with the keying section at the top of the spindle 506 through a regular hexagonal keying groove, driving the spindle 506 to rotate synchronously. When the spindle 506 rotates, it drives the other set of third bevel gears symmetrically arranged on the revolution bracket 505 to rotate in the opposite direction through the reversing transmission of the lower third bevel gear and the second bevel gear on the reversing shaft 512. This achieves coaxial and opposite synchronous rotation of the spindle 506 and the revolution bracket 505. While the spindle 506 rotates, it drives the workpiece bracket 509 to rotate around its own axis through the orthogonally meshing linkage bevel gears. The rotation of the revolution bracket 505 drives the workpiece bracket 509 to revolve around the axis of the revolution bracket 505. Combined with the high-frequency reciprocating vibration of the vibration carrier 501, the watch case completes a multi-dimensional variable angle precision grinding operation in the grinding solution, removing the burrs and tool marks remaining after CNC machining and improving the surface finish of the watch case. After the grinding and washing operation is completed, the lifting bracket 2 is raised, and the rotating bracket 3 continues to rotate 90° counterclockwise, switching the processing mechanism carrying the watch case to the cleaning station. The lifting bracket 2 descends, allowing the watch case to fully enter the processing tank 7. At this time, in the power distribution unit, the low-speed ratio gear 1205 meshes with the corresponding rotating gear 1211, driving the gear cylinder 1208 to rotate. Through the fifth bevel gear, the cam shaft 502 is driven to rotate at a preset second speed of 240 r / min, causing the vibrating carrier 501 to generate low-frequency reciprocating vibration. At the same time, the low-speed ratio sector gear 1202 and the high-speed ratio sector gear 1203, which are 180° offset, alternately mesh with the corresponding high-speed gear 1212, driving the directional guide shaft 1207 of the cleaning station to rotate alternately at a preset third speed of 450 r / min and a fourth speed of 150 r / min, and then through the fourth bevel gear, it drives... The moving center shaft 503 rotates alternately at two speeds, ultimately driving the watch case on the workpiece bracket 509 to complete the multi-dimensional rotation operation of alternating two speeds while vibrating at low frequency. When the treatment tank 7 is working, the central control unit 101 first controls the pump to start, pumping the cleaning fluid in the cleaning fluid storage tank 9 into the cavity 10 of the treatment tank 7 through the conduit 11, and then spraying it vertically onto the surface of the watch case at high pressure through the spray holes 8 arranged in the inner wall array. The high-pressure rinsing operation is completed for 90 seconds, thoroughly removing the abrasive, cutting fluid and metal chips remaining on the surface of the watch case. After rinsing is completed, the pump stops working, the hot air blower 14 starts, and sends 65°C high-pressure hot air into the cavity 10 through the conduit 11, and then sprays it vertically onto the surface of the watch case through the spray holes 8. The hot air drying operation of the watch case is completed for 120 seconds. The one-way valves in the two conduits 11 respectively block the reverse backflow of the cleaning fluid and hot air to avoid media crossflow and contamination. After the cleaning and drying operations are completed, the lifting bracket 2 is raised, and the rotating bracket 3 continues to rotate 90° counterclockwise, allowing the watch case that has completed all the processing steps to return to the loading and unloading station. After the lifting bracket 2 is lowered and reset, the central control unit 101 controls the solenoid valve of the corresponding valve pipe 1303 to close and the pressure relief valve to open, so that the pressure in the vacuum suction hole 510 is restored to normal pressure, releasing the adsorption and fixation on the watch case. Then, the six-axis robotic arm starts, grabs the watch case that has completed all the processing steps and places it on the finished product tray, and simultaneously grabs the next watch case to be processed to complete the loading operation. This cycle is repeated to realize the continuous automated processing of the entire process of smart watch case loading and unloading, CNC engraving, grinding and cleaning. Every time the rotating bracket 3 completes a 90° rotation, the four processing mechanisms simultaneously complete the processing operations of the corresponding stations, realizing parallel processing of four stations and greatly improving processing efficiency.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-station intelligent hand skin processing device, comprising a processing table (1), wherein, in a counterclockwise direction, loading and unloading stations, a fine carving station, a grinding station, and a cleaning station are sequentially arranged thereon, characterized in that, Also includes: The lifting bracket (2) is set on the processing table (1). A rotating bracket (3) is rotatably installed on the lifting bracket (2) and a first motor (4) is fixedly installed on it. The first motor (4) is connected to the rotating bracket (3) in a transmission. Four arms (5) are arrayed on the rotating bracket (3). Each arm (5) is equipped with a processing mechanism. The processing mechanism includes a vibratory carrier (501) slidably connected to the boom (5) and a cam shaft (502) and a central shaft (503) rotatably connected to the vibratory carrier (501). A spring (504) is installed between the vibratory carrier (501) and the boom (5). A revolution bracket (505) is rotatably connected to the vibratory carrier (501). A spindle (506) is coaxially mounted on the revolution bracket (505). Both the spindle (506) and the revolution bracket (505) are connected to the central shaft (503) for transmission. Two cam shafts (502) are symmetrically mounted on the outer periphery of the cam shaft (502). The two protrusions (507) have different eccentricities. A roller (508) is rotatably mounted on the vibration carrier (501). When the convex shaft (502) is driven to rotate, the outer contour surfaces of the two protrusions (507) alternately abut against the roller (508). A workpiece bracket (509) is rotatably connected to the bottom of the revolution support (505). Both the workpiece bracket (509) and the spindle (506) are equipped with linkage bevel gears. The two linkage bevel gears mesh orthogonally. Vacuum suction holes (510) are arrayed on the inner bottom surface of the workpiece bracket (509). The power distribution unit is configured as follows: At the grinding station, the drive cam (502) rotates at a first speed and drives the central shaft (503) to reciprocate at four different angles; At the cleaning station, the drive cam (502) rotates at a second speed and drives the central shaft (503) to rotate alternately at a third speed and a fourth speed; The grinding tank (6) and the treatment tank (7) are both fixed on the processing table (1). The inner wall of the treatment tank (7) is provided with an array of spray holes (8), which are configured to spray high-pressure cleaning liquid or high-pressure hot air. The vacuum positioning unit is configured to adjust the internal pressure of the vacuum suction port (510).

2. The multi-station intelligent hand skin processing device according to claim 1, characterized in that, A central control unit (101) is fixedly installed on the front end of the processing table (1). The bottom surfaces of the grinding tank (6) and the treatment tank (7) are connected to a drain ball valve. A guide frame (102) is fixedly installed on the back of the processing table (1). A screw lifting module (103) is fixedly installed on the guide frame (102). The screw lifting module (103) is connected to the lifting bracket (2) in a transmission manner. The lifting bracket (2) is slidably connected to the guide frame (102). A first transmission belt is connected to the output shaft of the first motor (4). The first transmission belt is connected to the rotating hanger (3) in a transmission manner.

3. The multi-station intelligent hand skin processing device according to claim 1, characterized in that, The processing mechanism also includes a linkage sleeve shaft (511) rotatably connected to the boom (5). A first bevel gear is installed on both the linkage sleeve shaft (511) and the central shaft (503). The two first bevel gears mesh orthogonally. A keying section is fixedly provided on the top of the spindle (506). A keying groove with a bottom opening and sliding connection with the keying section is fixedly opened inside the linkage sleeve shaft (511). A reversing shaft (512) is rotatably installed on the vibration carrier (501). A second bevel gear is fixedly installed on the reversing shaft (512). A third bevel gear is installed on both the spindle (506) and the revolution bracket (505). The two third bevel gears mesh with the second bevel gear.

4. The multi-station intelligent hand skin processing device according to claim 3, characterized in that, The cross-sections of the bonding segment and the bonding groove are both regular hexagons, and the two third bevel gears are symmetrically arranged with the horizontal plane containing the axis of the second bevel gear as the axis.

5. The multi-station intelligent hand skin processing device according to claim 1, characterized in that, A hot air blower (14) and a cleaning fluid storage tank (9) are fixedly installed on the processing table (1). A pump body is installed on the cleaning fluid storage tank (9). A cavity (10) is opened in the processing tank (7). Each of the spray holes (8) is connected to the cavity (10). The air outlet port of the hot air blower (14) and the liquid outlet port of the pump body are connected to the conduit (11). The other ends of the two conduits (11) are connected to the cavity (10) from the top of the cavity (10). A one-way valve is installed in each of the two conduits (11). The axis of the spray hole (8) is perpendicular to the axis of the processing tank (7).

6. The multi-station intelligent hand skin processing device according to claim 1, characterized in that, The power distribution unit includes a drive sleeve (12) rotatably mounted on a processing table (1). A second motor (1201) is mounted on the processing table (1). A second transmission belt is driven to the output shaft of the second motor (1201). The second transmission belt is driven to the drive sleeve (12). A low-ratio sector gear (1202), a high-ratio sector gear (1203), a rotary wheel (1204), a low-ratio lower gear (1205), and a high-ratio upper gear (1206) are respectively fixed on the drive sleeve (12). 06), a guide shaft (1207) is rotatably installed on the processing table (1) at the positions corresponding to the grinding and cleaning stations. A gear cylinder (1208) is rotatably sleeved on both guide shafts (1207). A rotary torsion spring (1213) is provided at the rotatable connection between the guide shaft (1207) of the grinding station and the processing table (1). A reciprocating gear (1209) is fixedly installed on the guide shaft (1207). Along the circumferential direction, four sector tooth arc segments (121) are alternately arranged on the rotating wheel (1204). 0) and four empty tooth arc segments, the central angles corresponding to the four said sector tooth arc segments (1210) are different. When the rotating wheel (1204) is driven to rotate, the four said sector tooth arc segments (1210) are alternately meshed with the reciprocating gear (1209). Rotary gears (1211) are fixed on both said gear cylinders (1208). The rotary gears (1211) on the grinding station are meshed with the high-speed ratio upper gear (1206), and the rotary gears (1211) on the cleaning station are meshed with the low-speed ratio lower gear (1205). The cleaning station has two gears (1212) installed on the directional guide shaft (1207). The two gears (1212) are respectively meshed with the low-speed ratio sector gear (1202) and the high-speed ratio sector gear (1203). The directional guide shaft (1207) and the central shaft (503) are both equipped with fourth bevel gears, and the two fourth bevel gears are meshed. The cam shaft (502) and the gear cylinder (1208) are both fixedly equipped with fifth bevel gears, and the two fifth bevel gears are meshed.

7. The multi-station intelligent hand shell processing device according to claim 6, characterized in that, The effective meshing arc segments on the low-speed ratio sector gear (1202) and the high-speed ratio sector gear (1203) both have a central angle of 120°. The effective meshing arc segments on the low-speed ratio sector gear (1202) and the high-speed ratio sector gear (1203) are offset by 180°. The number of teeth and pitch circle radius of the low-speed ratio sector gear (1202), the high-speed ratio sector gear (1203), the low-speed ratio lower gear (1205), and the high-speed ratio upper gear (1206) are different from each other.

8. The multi-station intelligent hand skin processing device according to claim 1, characterized in that, The vacuum positioning unit includes a vacuum pump (13) fixedly mounted on a lifting bracket (2). The vacuum generating port of the vacuum pump (13) is connected to a vacuum tube (1301). A gas distribution ring (1302) is fixedly mounted on the rotating bracket (3). The vacuum tube (1301) and the gas distribution ring (1302) are rotatably connected. A vacuum chamber is provided between the vacuum tube (1301) and the gas distribution ring (1302). An array of air holes communicating with the vacuum chamber are opened on the vacuum tube (1301). Four valve tubes (1303) are connected to the gas distribution ring (1302). A first air passage (130) is opened on each of the four spindles (506). 4) The other ends of the four valve tubes (1303) are respectively connected to the four first air passages (1304). The first connecting pipe (1305) connected to the first air passage (1304) is fixedly installed on the revolution bracket (505). The workpiece bracket (509) is provided with a second air passage (1306) and a third air passage (1307). The other end of the first connecting pipe (1305) is rotatably connected to the second air passage (1306). The second air passage (1306) is connected to a second connecting pipe (1308). The other end of the second connecting pipe (1308) and each vacuum suction hole (510) are connected to the third air passage (1307).

9. A multi-station intelligent hand skin processing device according to claim 8, characterized in that, The rotation axis of the workpiece bracket (509) is perpendicular to the axis of the spindle (506), and a solenoid valve and a pressure relief valve are fixedly mounted on the valve tube (1303).

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