A fully automatic sheet polishing machine

Abstract

The present invention provides a fully automatic sheet polishing machine, comprising a frame, a spindle mechanism is arranged on the frame, a workstation platform assembly is arranged on the frame and below the spindle mechanism, and the workstation platform assembly is slidably arranged along the X-axis direction of the frame; a positioning assembly and a cleaning and lifting assembly are sequentially arranged on the side of the workstation platform assembly away from the spindle mechanism, a loading and unloading bracket is arranged above the positioning assembly and the cleaning and lifting assembly on the frame, and an automatic loading and unloading assembly is arranged on the loading and unloading bracket. In this solution, from the beginning of material taking to processing and then to the placement and cleaning of the sheet after the processing is completed, these actions can be completed by the machine itself, and no human operation is required during the period. This solution can effectively solve the problems of low automation and low processing efficiency of polishing machines in the prior art.

Description

Technical Field

[0001] The invention relates to the technical field of polishing equipment, and in particular to a full-automatic sheet polishing machine. Background Art

[0002] With the development of communication technology, smart phones have become more and more popular and are developing in the direction of high quality. High quality includes not only the hardware configuration of the mobile phone, but also the appearance and texture. The current mainstream mobile phone main structure is an alloy middle frame plus a glass front screen and a glass back screen (or a glass cover). In order to enhance the overall visual effect of the screen and the fuselage, and at the same time enhance the feel, 2.5D screens are now widely used to replace 2D screens. 2.5D screens are a kind of curved screen, also known as water drop screens. 2.5D screens can make the surface of the mobile phone look like a water drop that is full but not overflowing, which has more visual tension and adds a lot to the visual expression of the mobile phone screen. In addition, the curved shape of the 2.5D screen is more in line with the principle of ergonomics. The curved transition eliminates the harsh edges and corners of the edge, greatly improving the feel of sliding the screen. However, the cost is also relatively increased, because during the processing, the glass grinding process will have a transition problem, so there will be a certain loss in the yield rate, resulting in an increase in cost. To solve this problem, it is necessary to invent an efficient polishing machine to process glass.

[0003] A five-axis linkage CNC polishing machine is disclosed in a patent document with application number 202011634215.0 and publication date 2021.04.13, including a frame, a Y-axis translation assembly is provided on the frame, an X-axis translation assembly is provided on the Y-axis translation assembly, and a swing and rotation assembly is provided on the X-axis translation assembly; the swing and rotation assembly is driven to reciprocate along the Y-axis by the Y-axis translation assembly; the swing and rotation assembly is driven to reciprocate along the X-axis by the X-axis translation assembly; the swing drive device drives the swing and rotation unit provided on the swing bracket to swing; the workpiece rotation drive device drives the workpiece rotation axis on the swing and rotation unit to rotate; the workpiece can easily realize movement in the Y-axis and X-axis directions, swing with the rotation center of the swing axis as the axis, and realize its own rotation, and cooperate with the rotation and lifting of the spline shaft to easily realize polishing processing of the plane and arc surface of the workpiece. Since the scheme sets multiple processing stations, it can effectively solve the problem of low processing efficiency of the polishing machine in the prior art.

[0004] However, the material loading and unloading of this solution needs to be done manually, and the materials can only be loaded and unloaded one by one. This process takes a lot of time, and the machine needs to stop and wait when loading and unloading materials. Therefore, the processing efficiency of this solution is actually relatively low. Summary of the invention

[0005] In order to solve the problems existing in the prior art, the present invention provides a fully automatic sheet material polishing machine, which solves the problems of low automation and low processing efficiency of the polishing machine in the prior art.

[0006] To achieve the above-mentioned purpose, the technical scheme of the present invention is: a fully automatic sheet polishing machine, comprising a frame, a spindle mechanism is arranged on the frame, a workstation platform assembly is arranged on the frame and below the spindle mechanism, and the workstation platform assembly is slidably arranged along the X-axis direction of the frame; a positioning assembly and a cleaning and lifting assembly are arranged in sequence on the side of the workstation platform assembly away from the spindle mechanism, a loading and unloading bracket is arranged on the frame above the positioning assembly and the cleaning and lifting assembly, and an automatic loading and unloading assembly is arranged on the loading and unloading bracket;

[0007] The spindle mechanism comprises a spindle support, on which one or more grinding head lower pressure compensation assemblies are arranged to be liftable through a main sliding device, a spindle fixing plate is arranged at the bottom end of the grinding head lower pressure compensation assembly, and a main lifting drive device for driving the spindle fixing plate to lift is arranged on the spindle support; the grinding head lower pressure compensation assembly also comprises an upper fixing plate, between which one or more spindle assemblies that can be lifted and lowered are arranged, and on the upper fixing plate is a lower pressure compensation drive device for driving the spindle assembly to lift and lower; the spindle assembly comprises a spindle drive device and a hollow combined grinding head arranged at the bottom end of a rotating shaft of the spindle drive device;

[0008] The station platform assembly includes an X-axis translation assembly arranged on the frame, a Y-axis translation assembly is arranged on the X-axis translation assembly, a station accommodation seat is arranged on the Y-axis translation assembly, one or more fixture assemblies are arranged along the X-axis direction in the station accommodation seat, one or more fixture assemblies are arranged along the Y-axis direction, and a guide bucket is also arranged in the station accommodation seat;

[0009] The positioning assembly comprises a positioning bracket, the positioning bracket comprises a positioning base plate, on which one or more primary positioning assemblies and secondary positioning assemblies corresponding to the primary positioning assemblies are arranged, the primary positioning assembly comprises one or more positioning rods arranged on the positioning base plate along the X-axis direction of the frame, on which a jig frame which can accommodate multiple sheets of material evenly spaced along a straight line is placed, and a locking clamp which fixes the jig frame to the positioning rod is arranged on the positioning base plate and at the end of the positioning rod; the secondary positioning assembly comprises a right-angle positioning block fixedly arranged on the positioning base plate, the right-angle positioning block comprises a first fixed limiting block and a second fixed limiting block, a first movable limiting device is arranged on a side opposite to the first fixed limiting block; a second movable limiting device is arranged on a side opposite to the second fixed limiting block, and the first fixed limiting block, the second fixed limiting block, the first movable limiting device and the second movable limiting device form a rectangular shape;

[0010] The cleaning lifting assembly includes a water tank arranged on a frame, a set of cleaning rack support plate lifting devices are respectively arranged on both sides of the water tank in the width direction, a cleaning rack support plate is arranged at the movable end of the cleaning rack support plate lifting device, and a cleaning rack corresponding to the secondary positioning assembly is arranged on the cleaning rack support plate; the cleaning rack includes a front side plate and a rear side plate, the front side plate and the rear side plate are connected by a pull rod to form a frame structure, and at least one arc-shaped notch is respectively arranged at the bottom of the front side plate and the rear side plate; more than three small pull rods for supporting sheets are also arranged between the front side plate and the rear side plate, and a bead strip is sleeved on the small pull rod, and the bead strip and the small pull rod are clearance-matched;

[0011] The automatic loading and unloading assembly comprises one or more first slide rails arranged on the loading and unloading bracket, one or more first sliding blocks arranged on the first sliding rails, a translation bracket arranged on the first sliding block, a first driving device driving the translation bracket to reciprocate along the first slide rails is arranged between the loading and unloading brackets and the translation bracket; one or more second sliding blocks are arranged on the translation bracket in the vertical direction, a second slide rail is arranged on the second sliding block, a second driving device driving the second slide rail to be lifted and lowered is arranged between the translation bracket and the second slide rail, a material picking rack is arranged at the bottom end of the second slide rail, a material picking shaft is rotatably arranged on the material picking rack, a material suction assembly corresponding to the secondary positioning mechanism is arranged on the material picking shaft, a group of material suction assemblies comprises two material suction mechanisms, and the two material suction mechanisms are symmetrically arranged relative to the center line of the material picking shaft; a shaft rotation driving device driving the material picking shaft to rotate is also arranged on the material picking rack;

[0012] The first driving device includes a first rack arranged on the loading and unloading bracket, a first driving motor is arranged on the translation bracket, a first gear is arranged on the output shaft of the first driving motor, and the first gear is meshed with the first rack; the second driving device includes a second rack arranged on the second slide rail, a second driving motor is arranged on the translation bracket, a second gear is arranged on the output shaft of the second driving motor, and the second gear is meshed with the second rack.

[0013] The material reclaiming frame is an inverted U-shaped structure, and the material reclaiming frame includes a crossbeam, and a rotating shaft support extending downward is provided at both ends of the crossbeam, and a bearing is provided at the bottom end of the rotating shaft support, and the material reclaiming rotating shaft is rotatably arranged between the two rotating shaft supports through the bearing;

[0014] The material suction mechanism includes a suction nozzle fixing block, on which one or more suction nozzles are arranged, an air passage communicating with the suction nozzles is arranged in the suction nozzle fixing block, and an air vent penetrating the suction nozzle fixing block and communicating with the air passage in the suction nozzle fixing block is also arranged on the suction nozzle fixing block, an air pipe joint is arranged in the air vent, and adjacent suction nozzle fixing blocks on the material taking rotating shaft are communicated through the air pipe;

[0015] The rotating shaft rotation driving device comprises a third driving motor arranged on the cross beam of the material taking frame, an active synchronous wheel is arranged on the output shaft of the third driving motor, a driven synchronous wheel is arranged on the material taking rotating shaft, the active synchronous wheel and the driven synchronous wheel are connected by a synchronous belt, and a synchronous belt shield is also arranged on the rotating shaft support;

[0016] The fully automatic sheet polishing machine also includes a polishing liquid circulation system and a vacuum system.

[0017] In the above scheme, the sheets to be processed are placed in batches on the jig frame of the initial positioning component, and the automatic loading and unloading component will transport the sheets to be processed sucked from the jig frame to the jig component on the workstation platform component, the suction mechanism returns to its position, the workstation platform component moves to the bottom of the spindle mechanism, and the combined grinding head of the spindle mechanism processes the sheets. After the processing is completed, the workstation platform component moves a certain distance to the side of the positioning component, and the suction mechanism on one side of the material-taking shaft sucks the sheets to be processed from the jig frame, and the material-taking shaft moves to the top of the spindle mechanism. The suction mechanism on the other side of the material-taking shaft sucks the processed sheets from the jig assembly and sucks the The suction mechanism of the work sheet places the sheet to be processed on the fixture assembly, and the workstation platform assembly returns to the bottom of the spindle mechanism. The combined grinding head of the spindle mechanism continues to process the sheet. The suction mechanism that has sucked the processed sheet places the processed sheet on the cleaning rack of the cleaning lifting assembly. The suction mechanism returns to its position and repeats the above actions until all the sheets on the fixture rack are processed. After that, the cleaning rack support plate lifting device starts to sink the cleaning rack into the water tank to clean the processed workpiece and then lift the cleaning rack. At this time, the cleaning rack on the cleaning lifting assembly can be taken away for subsequent processing to complete a round of sheet processing. This solution can complete all actions from starting to pick up materials to processing and then to placing and cleaning the sheets after processing. No human operation is required during this period. This solution can effectively solve the problems of low automation and low processing efficiency of polishing machines in the prior art.

[0018] Furthermore, the grinding head lower pressure compensation assembly further comprises an upper fixed plate support rod, one end of the upper fixed plate support rod is connected to the upper fixed plate, and the other end of the upper fixed plate support rod is connected to the spindle fixed plate;

[0019] The main sliding device is a guide column and guide sleeve structure, the guide sleeve is fixed on the spindle bracket, one end of the guide column is connected to the upper fixed plate, and the other end of the guide column is connected to the spindle fixed plate; the main lifting drive device is a servo electric cylinder, the cylinder body of the servo electric cylinder is fixed on the spindle bracket, and the push rod of the servo electric cylinder is connected to the spindle fixed plate;

[0020] A high-speed rotating joint is provided at the top of the rotating shaft of the spindle driving device; a spindle lower guide column is provided at the bottom end of the spindle driving device housing, a spindle lower guide sleeve is provided on the spindle fixing plate, and the spindle lower guide column cooperates with the spindle lower guide sleeve; a support rod connecting flange is provided at the top of the spindle driving device housing, more than two support rods are provided at the top of the support rod connecting flange, a floating joint flange is provided at the top of the support rod, a floating joint is provided at the center of the floating joint flange, more than one spindle upper guide column is provided on the floating joint flange, a spindle upper guide sleeve is provided on the upper fixing plate, and the spindle upper guide column cooperates with the spindle upper guide sleeve; the lower pressure compensation driving device is a cylinder, the cylinder body of the cylinder is fixed on the upper fixing plate, and the push rod of the cylinder is connected to the floating joint;

[0021] An electric proportional valve is arranged on the main shaft support, and the electric proportional valve is connected with the cylinder through an air pipe.

[0022] With the arrangement of the above spindle mechanism, the combined grinding head can move up and down along the sliding device of the cleaning lifting assembly driven by the servo electric cylinder, and the combined grinding head is driven by the spindle drive device to rotate; the pressure compensation assembly can prevent the combined grinding head from insufficiently polishing the sheet after wear, and the working principle of the pressure compensation assembly is: a fixed pressure value is set for the cylinder used for pressure compensation, and the pressure of the combined grinding head on the sheet will decrease by setting the electrical proportional valve when the combined grinding head is worn. At this time, the electrical proportional valve controls the compressed gas to supplement the pressure of the cylinder, and the push rod of the cylinder is pushed out. The push rod pushes the spindle drive device downward along the upper guide sleeve and the lower guide sleeve of the spindle through the floating joint, the floating joint flange, the support rod, and the support rod connecting flange, and the combined grinding head can be close to the sheet again.

[0023] Furthermore, the first movable limit device includes a first movable limit cylinder arranged at the bottom of the positioning base plate, a first avoidance hole is provided on the positioning base plate, a first movable limit block is provided on the push rod of the first movable limit cylinder, and the first movable limit block passes through the first avoidance hole; the second movable limit device includes a second movable limit cylinder arranged at the bottom of the positioning base plate, a second avoidance hole is provided on the positioning base plate, a second movable limit block is provided on the push rod of the second movable limit cylinder, and the second movable limit block passes through the second avoidance hole.

[0024] The above positioning component structure is set up. Since the sheet needs to be taken and placed smoothly on the jig frame, a gap must be left between the sheet and the jig frame. This determines that the positioning accuracy of the sheet on the jig frame is not high. Therefore, the sheet needs to be positioned twice before it can be machined. The positioning method of using the above fixed limit block in combination with the movable limit block is accurate and reliable.

[0025] Furthermore, the number of the small pull rods is three, and the three small pull rods are arranged in an inverted isosceles triangle shape between the front side plate and the rear side plate; the cleaning rack support plate lifting device includes a sliding device fixing plate, the sliding device fixing plate is fixed to the frame through a support rod, and more than one sliding device is provided on the sliding device fixing plate;

[0026] The sliding device is a combination of a linear bearing and a guide column. The linear bearing is installed on a fixed plate of the sliding device. The guide column cooperates with the linear bearing. A lower connecting plate is provided at the bottom end of the guide column, and an upper connecting plate is provided at the top end of the guide column. More than two connecting support rods extending downward are provided on the upper connecting plate, and the lower ends of the connecting support rods are connected to the cleaning rack support plate; a lifting cylinder is provided on the fixed plate of the sliding device, and the push rod of the lifting cylinder is connected to the upper connecting plate.

[0027] In the above structure, since the cleaning rack is used to collect the processed sheets, there is no requirement for accuracy after the sheets are placed on the cleaning rack, so three small pull rods can meet the requirements; a sliding device composed of a linear bearing and a guide column is provided, and the linear bearing can both bear a certain radial force and make the cleaning rack support plate rise and fall smoothly.

[0028] Further, the polishing liquid circulation system includes an upper shunt pipe group arranged at the top of the spindle bracket and a lower shunt pipe group arranged at the bottom of the spindle bracket, the upper shunt pipe group includes an upper shunt main pipe and more than one upper shunt branch pipe connected to the upper shunt main pipe, a ball valve is arranged on the upper shunt branch pipe, and the ball valve is communicated with the high-speed rotary joint; the lower shunt pipe group is arranged at the bottom of the spindle fixing plate and extends to the upper side of each combined grinding head, and the lower shunt pipe group is provided with bamboo tubes whose number exceeds the number of combined grinding heads;

[0029] The polishing liquid circulation system also includes a polishing liquid barrel, on which a filtering assembly and a circulating pump are provided, the filtering assembly includes a filter mounting portion provided on the side of the polishing liquid barrel, the filter mounting portion is communicated with the polishing liquid barrel, a fine filter is provided in the filter mounting portion, a coarse filter is provided in the fine filter, a scraping device for preventing debris from clogging the coarse filter is also provided on the filter mounting portion, the scraping device includes a push-pull cylinder provided on the filter mounting portion, and a brush is provided on the push rod of the push-pull cylinder; the water outlet of the circulating pump is communicated with the upper diversion pipe group and the lower diversion pipe group, and the water outlet of the guide bucket is communicated with the coarse filter.

[0030] In the above structure, the polishing liquid is pumped out from the polishing liquid barrel by a circulation pump, and is transported to the combined grinding head through the upper diversion pipe group and the lower diversion pipe group. The guide bucket collects the used polishing liquid, and the used polishing liquid flows to the filter assembly. At the coarse filter of the filter assembly, the bristles and impurities in the polishing liquid are blocked. At the same time, in order to prevent the bristles and impurities from clogging the filter holes of the coarse filter, a scraping device is provided to repeatedly scrape the coarse filter.

[0031] Furthermore, the vacuum system includes a first vacuum tank and a second vacuum tank arranged on the reverse polishing machine frame, the second vacuum tank is arranged directly below the first vacuum tank, the bottom of the first vacuum tank and the top of the second vacuum tank are communicated, a vacuum source connector is provided on the top of the first vacuum tank, a first pipeline is provided above the first vacuum tank, an air pipe connector is provided on the first pipeline, the air pipe connector and the fixture assembly are connected through an air pipe, a second pipeline is also provided between the top of the first vacuum tank and the top of the second vacuum tank, a drainage pipeline is provided at the bottom of the second vacuum tank, and the drainage pipeline is communicated with the coarse filter.

[0032] Furthermore, after the vacuum source connector is connected to the vacuum source, negative pressure will be formed in the first vacuum tank and the first pipeline to adsorb the sheet on the jig assembly. However, during operation, the polishing liquid on the jig assembly may also be sucked into the first vacuum tank. After the second pipeline is set, negative pressure will also be formed in the second vacuum tank, which is conducive to sucking the polishing liquid accumulated in the first vacuum tank into the second vacuum tank, and then flowing back to the polishing liquid barrel from the drainage pipeline at the bottom of the second vacuum tank. In this way, the polishing liquid will not enter the vacuum source, thereby protecting the equipment at the vacuum source.

[0033] Furthermore, on the frame, with the spindle mechanism as the symmetry center, a work station platform component, a positioning component, a cleaning lifting component, a loading and unloading bracket and an automatic loading and unloading component are symmetrically arranged.

[0034] The above arrangement relatively sets two sets of workstation platform components, positioning components, cleaning lifting components, loading and unloading brackets and automatic loading and unloading components, and shares a set of spindle mechanism. During operation, when the sheet to be processed on one side is processed and replenished, the workstation platform components, positioning components, cleaning lifting components, loading and unloading brackets and automatic loading and unloading components on the other side are started, and the spindle mechanism does not need to stop and wait, which greatly improves the processing efficiency.

[0035] Furthermore, a spindle protective cover is provided on the spindle bracket, and observation windows are provided on all four sides of the spindle protective cover, and the observation windows include a frame and a transparent plate installed on the frame; a cooling fan is provided on the top of the spindle protective cover; an operation control box assembly is also provided on the spindle bracket; an overall protective cover assembly is provided on the frame, and double-leaf inspection doors are provided on the front, right and rear sides of the overall protective cover assembly; a main electric box is provided at the bottom of the frame; and adjustable casters and adjustable supports are provided at intervals at the bottom of the frame.

[0036] In the above structure, the overall shield assembly is set to effectively protect the precision parts of the machine and prevent external substances from affecting the machine; the overall shield assembly can isolate the noise generated by the machine and reduce the noise pollution in the workshop; the inspection door can facilitate the inspection of the machine and improve the efficiency of the inspection; the observation window can facilitate the observation of the working condition of the machine to prevent accidents from occurring when the internal condition of the machine cannot be seen; the main electrical box is electrically connected to all electrical equipment of the machine to provide power for the electrical equipment; the operation control box assembly is used to control the operation of all electrical equipment of the machine; the adjustable casters are set to adjust the horizontality of the frame to ensure the accuracy of the machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 This is a schematic diagram of the structure of the present invention after removing the overall shield assembly;

[0039] Figure 3 It is a structural schematic diagram of the spindle mechanism in the present invention;

[0040] Figure 4 It is a structural schematic diagram of the main shaft mechanism in the present invention from another perspective;

[0041] Figure 5 It is a schematic diagram of the overall structure of the grinding head lower pressure compensation assembly in the present invention;

[0042] Figure 6 It is a structural schematic diagram of a single set of grinding head lower pressure compensation components in the present invention;

[0043] Figure 7 It is a structural schematic diagram of the combined grinding head in the present invention;

[0044] Figure 8 It is a structural schematic diagram of the workstation platform assembly in the present invention;

[0045] Fig. 9 It is a structural schematic diagram of the workstation platform assembly in the present invention from another perspective;

[0046] Fig.10 It is a structural schematic diagram of the positioning component in the present invention;

[0047] Fig.11 It is a structural schematic diagram of the positioning component in the present invention from another perspective;

[0048] Fig.12 It is a structural schematic diagram of the initial positioning component in the present invention;

[0049] Fig.13 for Fig.10 Enlarged view of point A in the middle;

[0050] Fig.14 for Fig.11 Enlarged view of point B in the middle;

[0051] Fig.15 It is a structural schematic diagram of the cleaning lifting assembly in the present invention;

[0052] Fig.16 It is a structural schematic diagram of the cleaning lifting assembly in the present invention from another perspective;

[0053] Fig.17 It is a structural schematic diagram of the automatic loading and unloading assembly in the present invention;

[0054] Fig.18 It is a structural schematic diagram of the automatic loading and unloading assembly of the present invention from another perspective;

[0055] Fig.19 It is a schematic diagram of the structure of the polishing liquid circulation system in the present invention;

[0056] Fig. 20 It is a structural schematic diagram of the vacuum system in the present invention. DETAILED DESCRIPTION

[0057] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0058] like Figures 1 to 20 As shown, a fully automatic sheet polishing machine comprises a frame 1 on which a spindle mechanism 2 is arranged.

[0059] like Figures 3 to 7 As shown, the spindle mechanism 2 includes a gantry-type spindle bracket 20, on which one or more grinding head lower pressure compensation assemblies 22 are provided so as to be liftable through a main sliding device. In the present embodiment, the number of the grinding head lower pressure compensation assemblies 22 is six, and a spindle fixing plate 23 is provided at the bottom end of the grinding head lower pressure compensation assemblies 22.

[0060] The grinding head lower pressure compensation assembly 22 includes an upper fixed plate 220. In this embodiment, the main sliding device is a guide column and guide sleeve structure. The guide sleeve 210 is fixed on the spindle bracket 20. One end of the guide column 211 is connected to the upper fixed plate 220, and the other end of the guide column 211 is connected to the spindle fixed plate 23.

[0061] One or more liftable spindle assemblies 24 are provided between the spindle fixing plate 23 and the upper fixing plate 220, and a lower pressure compensation driving device for driving the spindle assembly 24 to be lifted and lowered is provided on the upper fixing plate 220. In this embodiment, the number of spindle assemblies 24 and lower pressure compensation driving devices in a group of grinding head lower pressure compensation assemblies 22 is three.

[0062] The spindle assembly 24 includes a spindle drive device and a hollow combined grinding head 241 arranged at the bottom end of the rotating shaft of the spindle drive device. In this embodiment, the spindle drive device is a center-water-discharge type spindle motor 240, and a high-speed rotating joint 242 is provided at the top end of the rotating shaft of the spindle motor 240.

[0063] The grinding head lower pressure compensation assembly 22 also includes an upper fixed plate support rod 222. In the present embodiment, there are four upper fixed plate support rods 222, which are respectively arranged at the two ends of the upper fixed plate 220. One end of the upper fixed plate support rod 222 is connected to the upper fixed plate 220, and the other end of the upper fixed plate support rod 222 is connected to the spindle fixed plate 23. A spindle lower guide column 223 is provided at the bottom end of the spindle motor 240 housing, and a spindle lower guide sleeve 224 is provided on the spindle fixed plate 23. The spindle lower guide column 223 cooperates with the spindle lower guide sleeve 224. In the present embodiment, the number of the spindle lower guide column 223 and the spindle lower guide sleeve 224 are both four.

[0064] A support rod connecting flange 225 is provided at the top of the spindle motor 240 shell, and more than two support rods 226 are provided at the top of the support rod connecting flange 225. In the present embodiment, the number of the support rods 226 is three, and a floating joint flange 227 is provided at the top of the support rod 226. A floating joint 2270 is provided at the center of the floating joint flange 227. More than one spindle guide column 228 is provided on the floating joint flange 227, and a spindle guide sleeve 229 is provided on the upper fixed plate 220. The spindle guide column 228 cooperates with the spindle guide sleeve 229. In the present embodiment, the number of the spindle guide column 228 and the spindle guide sleeve 229 is two, and a spindle guide column connecting rod 2281 is provided on the top of the spindle guide column 228.

[0065] In this embodiment, the down-pressure compensation driving device is a cylinder 221, the cylinder body of the cylinder 221 is fixed on the upper fixed plate 220, the push rod of the cylinder 221 is connected to the floating joint 2270, and an electrical proportional valve 201 is provided on the main shaft bracket 20, and the electrical proportional valve 201 is connected to the cylinder 221 through an air pipe.

[0066] A main lifting drive device for driving the spindle fixing plate 23 to rise and fall is provided on the spindle bracket 20; in this embodiment, the main lifting drive device is a servo electric cylinder 25, the cylinder body of the servo electric cylinder 25 is fixed on the spindle bracket 20, and the push rod of the servo electric cylinder 25 is connected to the spindle fixing plate 23.

[0067] A reinforcing strip 231 is provided along the edge of the upper surface of the spindle fixing plate 23; a criss-cross reinforcing strip is provided on the upper surface of the spindle fixing plate 23; a spindle shield 232 for protecting the spindle drive device and a transparent shield 233 for preventing the polishing liquid from being thrown out are provided on the lower surface of the spindle fixing plate 23.

[0068] The combined grinding head 241 is fixed on the rotating shaft of the spindle motor 240 by the axial chuck 2140. The combined grinding head 241 includes a hollow fixed handle 2411. The fixed handle 2411 includes a straight body part and a conical part. A flexible straight body buffer ring 2412 is provided on the straight body buffer ring 2412, and a grinding skin 2413 is provided on the straight body buffer ring 2412; a flexible bottom surface buffer sheet 2414 is provided at the bottom of the fixed handle 2411, and a brush 2415 is provided on the bottom surface buffer sheet 2414.

[0069] With the above arrangement, the spindle motor 240 can drive the combined grinding head 241 to perform high-speed rotational motion, the cylinder 221 can push the spindle motor 240 and the combined grinding head 241 to perform lifting motion, and the servo electric cylinder 25 can drive all the spindle motors 240 and the combined grinding heads 241 on the spindle fixing plate 23 to perform lifting motion. Since the combined grinding head 241 on the spindle motor 240 will show different degrees of wear after a period of use, the severely worn combined grinding head 241 will not be in close contact with the sheet during polishing, so the processed sheet will not meet the requirements. By setting the cylinder 221 and the electric proportional valve 201, when the combined grinding head 241 is worn, the pressure of the combined grinding head 241 on the sheet will decrease. At this time, the electric proportional valve 201 controls the compressed gas to supplement the pressure of the cylinder 221, and the push rod of the cylinder 221 is pushed out. The push rod pushes the spindle motor 240 and the combined grinding head 241 downward along the upper guide sleeve 229 and the lower guide sleeve 224 of the spindle through the floating joint 2270, the floating joint flange 227, the support rod 226 and the support rod connecting flange 225, and the combined grinding head 241 can be close to the sheet again.

[0070] like Figure 8 and Fig. 9 As shown, a workstation platform assembly 3 is provided on the frame 1 and below the spindle mechanism 2 , and the workstation platform assembly 3 is slidably arranged along the X-axis direction of the frame 1 .

[0071] The workstation platform assembly 3 includes an X-axis translation assembly arranged on the frame 1, a Y-axis translation assembly 32 is arranged on the X-axis translation assembly, a workstation accommodating seat 33 is arranged on the Y-axis translation assembly 32, one or more fixture assemblies 34 are arranged along the X-axis direction in the workstation accommodating seat 33, one or more fixture assemblies 34 are arranged along the Y-axis direction, and a guide hopper 35 is also arranged in the workstation accommodating seat 33.

[0072] The X-axis translation assembly includes more than two X-axis slide rails (not shown) arranged along the X-axis direction, more than two X-axis sliders (not shown) are arranged on a single X-axis slide rail, and a translation bracket 310 is arranged on the X-axis slider; the X-axis translation assembly also includes a work station platform translation rack (not shown) arranged parallel to the X-axis slide rail, a work station platform X-axis drive motor 311 is arranged on the translation bracket 310, and a work station platform translation gear 312 is arranged on the main shaft of the work station platform X-axis drive motor 311, and the work station platform translation gear 312 is meshed with the work station platform translation rack. In this embodiment, the work station platform translation rack is a helical rack, and the work station platform translation gear 312 is a helical gear.

[0073] The Y-axis translation assembly 32 includes one or more Y-axis rails 321 arranged along the Y-axis direction of the translation bracket 310, and more than two Y-axis sliders 322 are arranged on the single Y-axis rail. The workstation accommodating seat body 33 is connected to the Y-axis slider 322. The translation bracket 310 is provided with a workstation platform Y-axis driving screw rod 323 and a workstation platform Y-axis driving motor 324 parallel to the Y-axis rail 321. The main shaft of the workstation platform Y-axis driving motor 324 is connected to the workstation platform Y-axis driving screw rod 323. A Y-axis driving nut 325 is provided at the bottom of the workstation accommodating seat body 33, and the Y-axis driving nut 325 cooperates with the Y-axis driving screw rod 323.

[0074] Start the X-axis driving motor 311 of the workstation platform, and drive the workstation accommodating seat 33 to move along the X-axis through the first gear 312. Start the Y-axis driving motor 324 of the workstation platform, and drive the workstation accommodating seat 33 to move along the Y-axis through the Y-axis driving screw 323 of the workstation platform.

[0075] The fixture assembly 34 is a mature prior art, and its specific structure will not be described in detail here.

[0076] A positioning assembly 4 and a cleaning lifting assembly 5 are sequentially arranged on a side of the workstation platform assembly 3 away from the spindle mechanism 2 .

[0077] like Figures 10 to 12 As shown, the positioning component 4 includes a gantry-type positioning bracket 40, and the positioning bracket 40 includes a positioning base plate 400. There are one or more primary positioning components 41 and secondary positioning components 42 corresponding to the primary positioning components 41 on the positioning base plate 400. In this embodiment, the number of primary positioning components 41 and the number of secondary positioning components are both six.

[0078] The initial positioning assembly 41 includes one or more positioning rods 411 arranged on the positioning base plate 400 along the X-axis direction of the frame 1. In the present embodiment, there are two positioning rods 411, which are fixed to the positioning base plate 400 through a single-sided open guide shaft support 412. A jig frame 43 is placed on the positioning rod 411, which can accommodate multiple sheets of material at even intervals along a straight line. A locking clamp is provided on the positioning base plate 400 and at the end of the positioning rod 411 to fix the jig frame 43 to the positioning rod 411.

[0079] The fixture frame 43 includes a front side plate 431 and a rear side plate 432, and the front side plate 431 and the rear side plate 432 are connected to form a frame structure by more than three tie rods 433. In this embodiment, the number of tie rods 433 is four, and an arc-shaped notch 434 cooperating with the positioning rod 411 is provided at the bottom of the front side plate 431 and the rear side plate 432; four small tie rods 435 are also provided between the front side plate 431 and the rear side plate 432, and the four small tie rods 435 are arranged in an inverted isosceles trapezoidal shape between the front side plate 431 and the rear side plate 432. A bead bar 436 is sleeved on 435, and the bead bar 436 and the small tie rod 435 are matched with each other in a gap. Since the sheet to be processed needs to be initially positioned on the jig frame, four small tie rods 435 are provided on the jig frame 43, that is, the small tie rods 435 are arranged in an inverted isosceles trapezoid shape, and two small tie rods 435 are provided at the bottom to improve the positioning accuracy; the small tie rod 435 is connected to the front side plate 431 and the rear side plate 432 by butterfly bolts 437, and the position of the small tie rod 435 can be easily adjusted to adapt to sheets of different sizes. In this embodiment, the locking clamp is a push-pull quick clamp 44.

[0080] When all the sheets on the jig rack 43 are taken out, it is necessary to replenish the sheets. At this time, the jig rack needs to be removed from the positioning rod 411. This is a repetitive process, so the positioning rod 411 is provided to achieve rapid positioning of the jig rack 43; the push-pull quick clamp 44 is provided to achieve rapid tightening and loosening of the jig rack 43; the jig rack 43 in this embodiment, the clearance between the bead bar 436 and the small pull rod 435, that is, the bead bar 436 can rotate on the small pull rod 435, so that the taking and placing of the sheets can be smoother.

[0081] Since there is a gap between the beads 436 on the jig frame 43 and the sheet, the initial positioning component 41 can only perform a preliminary positioning on the sheet, so a precise positioning is required before machining on the sheet.

[0082] like Fig.13As shown, the secondary positioning assembly 42 includes a right-angle positioning block 420 fixedly arranged on the positioning base plate 400, the right-angle positioning block 420 includes a first fixed limiting block end 4201 and a second fixed limiting block end 4202, a first movable limiting device 421 is arranged on a side opposite to the first fixed limiting block end 4201; a second movable limiting device 422 is arranged on a side opposite to the second fixed limiting block end 4202, and the first fixed limiting block end 4201, the second fixed limiting block end 4202, the first movable limiting device 421 and the second movable limiting device 422 form a rectangular shape;

[0083] like Fig.14 As shown, the first movable limiting device 421 includes a first movable limiting cylinder 4211 arranged at the bottom of the positioning base plate 400, a first avoiding hole 4210 is provided on the positioning base plate 400, and a first movable limiting block 4212 is provided on the push rod of the first movable limiting cylinder 4211, and the first movable limiting block 4212 passes through the first avoiding hole 4210; the second movable limiting device 422 includes a second movable limiting cylinder 4221 arranged at the bottom of the positioning base plate 400, a second avoiding hole 4220 is provided on the positioning base plate 400, and a second movable limiting block 4222 is provided on the push rod of the second movable limiting cylinder 4221, and the second movable limiting block 4222 passes through the second avoiding hole 4220.

[0084] A avoiding groove 42220 is provided on the surface of the second movable limiting block 4222 opposite to the second fixed limiting block end 4202. The provision of the groove can reduce the contact area and improve the positioning accuracy.

[0085] On the positioning base plate 400, a flexible protective pad (not shown) is provided in a rectangular space surrounded by the first fixed limit block end 4201, the second fixed limit block end 4202, the first movable limit block 4212 and the second movable limit block 4222, an air groove (not shown) is provided on the protective pad, an air hole (not shown) communicating with the air groove is provided on the positioning base plate 400, an air pipe joint is provided on the air hole through the mold quick water nozzle 44, and adjacent air pipe joints are communicated through an air pipe.

[0086] By setting a fixed right-angle positioning block 420, the secondary positioning component 42 has a positioning reference, and then by setting a movable first movable limiting device 421 and a second movable limiting device 422 to push the sheet material so that the sheet material is close to the right-angle positioning block 420, the precise positioning of the sheet material can be achieved. Compared with the positioning method in the prior art, this solution has more precise positioning.

[0087] like Fig.15As shown, the cleaning lifting assembly 5 includes a water tank 50 arranged on the frame 1, and a set of cleaning rack support plate lifting devices 51 are respectively provided on both sides of the water tank 50 along the width direction. A cleaning rack support plate 52 is provided at the movable end of the cleaning rack support plate lifting device 51, and a cleaning rack 53 corresponding to the secondary positioning assembly 42 is provided on the cleaning rack support plate 52.

[0088] The cleaning rack support plate lifting device 51 includes a sliding device fixing plate 510, which is fixed to the frame 1 through a support rod 511. In this embodiment, one end of the sliding device fixing plate 510 is fixed to the positioning bracket 40, and the other end of the sliding device fixing plate 510 is fixed to the frame 1 through two support rods 511.

[0089] One or more sliding devices are provided on the sliding device fixing plate 510. The sliding devices are a combination of linear bearings 512 and guide posts 513. In this embodiment, a set of cleaning rack support plate lifting device 51 includes two guide posts 513 and four linear bearings 512, two of which are installed on the sliding device fixing plate 510, and the other two linear bearings 512 are installed on the frame 1. The guide posts 513 cooperate with the linear bearings 512. A lower connecting plate 514 is provided at the bottom end of the guide posts 513, and an upper connecting plate 515 is provided at the top end of the guide posts 513. More than two connecting support rods 516 extending downward are provided on the upper connecting plate 515. In this embodiment, the number of connecting support rods 516 is four, and the lower end of the connecting support rods 516 is connected to the cleaning rack support plate 52. A lifting cylinder 517 is provided on the sliding device fixing plate 510, and the push rod of the lifting cylinder 517 is connected to the upper connecting plate 515. The lifting and lowering of the cleaning rack support plate 52 can be realized by starting the lifting cylinder 517.

[0090] A boss 5101 is provided on the side of the slide fixing plate 510 close to the water tank 50, a positioning hole 5100 is provided on the boss 5101, and a positioning pin 5102 is provided on the cleaning rack supporting plate 52. When the top surface of the cleaning rack supporting plate 52 contacts the bottom surface of the slide fixing plate 510, the positioning pin 5102 is inserted into the positioning hole 5100. The positioning hole and the positioning pin can make the positioning of the cleaning rack 53 more accurate, which is conducive to the placement of the sheet.

[0091] A water hole 520 is provided on the cleaning rack support plate 52; and reinforcing square steel bars 521 are provided on both sides of the bottom of the cleaning rack support plate 52 along the length direction. The water hole 520 can reduce the resistance when the cleaning rack support plate 52 is raised and lowered, and can allow the cleaning liquid to form a water flow to wash the sheets. Since the cleaning rack support plate 52 is long and the cleaning rack support plate 52 needs to carry a lot of sheets, it is possible that the cleaning rack support plate 52 will be deformed. The reinforcing square steel bars 521 can prevent the cleaning rack support plate 52 from bending and deforming.

[0092] There are more than one positioning rods on the cleaning rack support plate 52. In this embodiment, there are two positioning rods. The positioning rods are fixed to the cleaning rack support plate 52 through a single-side open guide shaft support. The cleaning rack 53 is placed on the positioning rods. A locking clamp is provided on the cleaning rack support plate 52 and at the end of the positioning rod to fix the cleaning rack on the positioning rod. In this embodiment, the locking clamp is a push-pull quick clamp.

[0093] The structure of the cleaning rack 53 is similar to that of the fixture rack 43, except that there are three small pull rods on the cleaning rack 53, and the three small pull rods are arranged in an inverted isosceles triangle shape between the front side plate and the rear side plate. This is because the cleaning rack is used to place processed sheets, and the sheets only need to be placed on the cleaning rack. There is no positioning accuracy requirement. Only three small pull rods can simplify the structure of the cleaning rack and reduce costs.

[0094] A drainage funnel 501 is provided at the middle position of the bottom of the water tank 50 , and a ball valve 502 is provided at the bottom of the drainage funnel 501 .

[0095] A loading and unloading bracket 106 is provided on the frame 1 above the positioning assembly 4 and the cleaning lifting assembly 5, and an automatic loading and unloading assembly 6 is provided on the loading and unloading bracket.

[0096] like Fig.17 , Fig.18 As shown, the automatic loading and unloading assembly 6 includes one or more first slide rails 611 arranged on the loading and unloading bracket 106, and one or more first sliders 612 are arranged on the first slide rails 611. In this embodiment, the number of first slide rails 611 is two, and two first sliders 612 are arranged on the single first slide rail 611.

[0097] A translation bracket 62 is provided on the first slider 612, and a first driving device for driving the translation bracket 62 to reciprocate along the first slide rail 611 is provided between the loading and unloading bracket 106 and the translation bracket 62; in this embodiment, the first driving device includes a first rack 631 provided on the loading and unloading bracket 106, a first driving motor 630 is provided on the translation bracket 62, and a first gear (not shown) is provided on the output shaft of the first driving motor 630, and the first gear is meshed with the first rack 631.

[0098] At least one second slider 622 is provided in the vertical direction on the translation bracket 62, and a second slide rail 621 is provided on the second slider 622. In the present embodiment, there are two second slide rails 621, and a slide rail connecting block 623 is provided at the top of the two second slide rails 621, and two second sliders 622 are provided on the single second slide rail 621.

[0099] A second driving device for driving the second slide rail 621 to rise and fall is provided between the translation bracket 62 and the second slide rail. In this embodiment, the second driving device includes a second rack 641 provided on the second slide rail 621, a second driving motor 640 is provided on the translation bracket 62, and a second gear (not shown) is provided on the output shaft of the second driving motor 640, and the second gear is meshed with the second rack 641. The gear rack transmission has a simple structure and reliable transmission. In this embodiment, the first driving motor 630 and the second driving motor 640 are both servo motors; the first rack 631 and the second rack 641 are both helical racks; the first gear and the second gear are both helical gears. The helical gear rack can eliminate the transmission gap, has high transmission rigidity, large output torque, and easy to ensure positioning accuracy.

[0100] A material-collecting frame 65 is provided at the bottom end of the second slide rail 621, and a material-collecting rotating shaft 66 is rotatably provided on the material-collecting frame 65. In this embodiment, the material-collecting frame 65 is an inverted U-shaped structure, which can also be called a gantry structure. The material-collecting frame 65 includes a crossbeam 651, and a rotating shaft support 652 extending downward is provided at both ends of the crossbeam 651. A bearing is provided at the bottom end of the rotating shaft support 652, and the material-collecting rotating shaft 66 is rotatably provided between the two rotating shaft supports 652 through the bearing. This scheme has a stable structure, and the material-collecting rotating shaft 66 is provided between the rotating shaft supports 652 through the bearing to reduce the resistance during rotation; the material-collecting rotating shaft 66 is a hollow structure, and a rotating air pipe joint 661 is provided at one end of the material-collecting rotating shaft 66, and the other end of the material-collecting rotating shaft 66 is closed. The provision of the rotating air pipe joint 661 can prevent the air pipe from being entangled.

[0101] A suction assembly corresponding to the secondary positioning assembly 42 is provided on the material taking shaft 66, and a group of suction assemblies includes two suction mechanisms 67, which are arranged symmetrically with respect to the center line of the material taking shaft 66; the suction mechanism 67 includes a suction nozzle fixing block 670, and one or more suction nozzles 671 are provided on the suction nozzle fixing block 670. In this embodiment, the number of suction nozzles 671 is two, and an air passage communicating with the suction nozzle 671 is provided in the suction nozzle fixing block 670, and a vent hole (not shown) penetrating the suction nozzle fixing block 670 and communicating with the air passage in the suction nozzle fixing block 670 is also provided on the suction nozzle fixing block 670, and an air pipe joint is provided in the vent hole, and adjacent suction nozzle fixing blocks 670 on the material taking shaft 66 are communicated through the air pipe. The above structure can reliably adsorb the sheet material, and adjacent suction nozzle fixing blocks 670 can be connected in series, which is convenient for the arrangement of the air pipe.

[0102] A nozzle 68 is provided on the material taking rotating shaft 66 and between two opposite material suction mechanisms 67. The nozzle 68 can blow out gas to remove the polishing liquid on the sheet.

[0103] The material taking frame 65 is also provided with a shaft rotation driving device 69 for driving the material taking shaft 66 to rotate. The shaft rotation driving device 69 includes a third driving motor 691 provided on the cross beam of the material taking frame 65. An active synchronous wheel 692 is provided on the output shaft of the third driving motor 691. A driven synchronous wheel 693 is provided on the material taking shaft 66. The active synchronous wheel and the driven synchronous wheel are connected by a synchronous belt 694. A synchronous belt shield (not shown) is also provided on the shaft support 652. The above structure is simple in structure and accurate in driving and transmission.

[0104] This solution can realize horizontal reciprocating motion along the X-axis direction; realize lifting motion along the Z-axis direction; and realize rotational motion along the material-retrieving shaft 66. The two suction mechanisms 67 can respectively realize the feeding of the sheets to be polished and the unloading of the polished sheets, and the above two actions can be realized in one round trip of the suction component. A plurality of suction components are arranged on the material-retrieving shaft 66, which can transport multiple sheets at a time. The structure is simple and the efficiency is high.

[0105] like Figure 4 and Fig.19 As shown, the polishing liquid circulation system 7 includes an upper diverter pipe group 71 arranged at the top of the spindle bracket 20 and a lower diverter pipe group 72 arranged at the bottom of the spindle bracket 20, the upper diverter pipe group 71 includes an upper diverter main pipe and a plurality of upper diverter branches connected to the upper diverter main pipe, a ball valve is provided on the upper diverter branch pipe, and the ball valve is connected to the high-speed rotating joint 242 through a water pipe; the lower diverter pipe group 72 is arranged at the bottom of the spindle fixing plate 23 and extends to the upper side of each combined grinding head 241, and bamboo tubes 721 are provided on the lower diverter pipe group 72 in a number exceeding the number of combined grinding heads; it is ensured that a bamboo tube 721 is provided on the upper side of at least one combined grinding head 241. With the above arrangement, during polishing, the polishing liquid can be provided through the center of the combined grinding head 241, and can also be provided from the outside through the bamboo tube 721, which can fully guarantee the supply of polishing liquid and improve the polishing effect.

[0106] The polishing liquid circulation system also includes a polishing liquid barrel 73, on which a filtering assembly and a circulating pump 77 are provided. The filtering assembly includes a filter mounting portion 740 disposed on the side of the polishing liquid barrel 73. The filter mounting portion 740 is communicated with the polishing liquid barrel 73. A fine filter 741 is provided in the filter mounting portion 740, and a coarse filter 742 is provided in the fine filter 741.

[0107] A scraping device 75 is also provided on the filter mounting portion 740 to prevent debris from clogging the coarse filter 742. The scraping device 75 includes a push-pull cylinder 750 provided on the filter mounting portion 740, and a brush 751 is provided on the push rod of the push-pull cylinder 750. In this embodiment, the brush 751 is connected to the push rod of the push-pull cylinder 750 through a brush fixing plate 752. To ensure the accuracy of the brush movement, a second guide column 753 is also provided on the filter mounting portion 740, and a second guide sleeve 754 is provided on the brush fixing plate 76. The second guide column 753 cooperates with the second guide sleeve 754. In the above structure, since the polishing liquid after use contains impurities such as bristles, it needs to be filtered before use. In addition, impurities will clog the filter holes of the coarse filter 742, so it is necessary to set a scraping device 75 to repeatedly scrape the bottom surface of the coarse filter 742 to prevent the filter holes from being clogged.

[0108] The water outlet of the circulation pump 77 is communicated with the upper diversion pipe group 71 and the lower diversion pipe group 72 , and the water outlet of the guide bucket 501 is communicated with the coarse filter 742 through the water outlet pipe 79 .

[0109] like Fig. 20 As shown, the vacuum system 8 includes a first vacuum tank 81 and a second vacuum tank 82 arranged on the reverse polishing machine frame 1, the second vacuum tank 82 is arranged directly below the first vacuum tank 81, the bottom of the first vacuum tank 81 and the top of the second vacuum tank 82 are connected, a vacuum source connector 83 is provided on the top of the first vacuum tank 81, a first pipeline 84 is provided on the side wall of the first vacuum tank 81, the first pipeline 84 is connected to the jig assembly 34 through an air pipe, a first air pipe connector 810 is provided on the top of the first vacuum tank, and a second air pipe connector 820 is also provided on the top of the second vacuum tank 82, the first air pipe connector 810 and the second air pipe connector 820 are connected through an air pipe (not shown) to form a second pipeline, and a drainage pipeline 85 is provided at the bottom of the second vacuum tank 82, and the drainage pipeline 85 is connected to the coarse filter 742.

[0110] After the vacuum source connector 83 is connected to the vacuum source, negative pressure will be formed in the first vacuum tank 81 and the first pipeline 84 to adsorb the sheet. However, during operation, the grinding liquid on the fixture assembly 34 may also be sucked into the first vacuum tank 81. After the second pipeline is set, negative pressure will also be formed in the second vacuum tank 82. The polishing liquid accumulated in the first vacuum tank 81 can be sucked into the second vacuum tank 82, and then flow back to the polishing liquid barrel 73 from the drainage pipeline 85 at the bottom of the second vacuum tank 82 through the coarse filter 742. In this way, the polishing liquid will not enter the vacuum source, which can effectively protect the vacuum pump.

[0111] On the frame 1 , with the spindle mechanism 2 as the symmetry center, another set of workstation platform components 3 , positioning components 4 , cleaning lifting components 5 , loading and unloading brackets 106 and automatic loading and unloading components 6 are symmetrically arranged on the other side of the frame 1 .

[0112] When the sheet on the positioning component 4 on one side of the spindle mechanism 2 is processed, it takes a certain amount of time to add the sheet to be processed to the positioning component 4, and it also takes a certain amount of time to remove the processed sheet on the cleaning and lifting component 5. During this period of time, the spindle mechanism 2 is idle. After the above settings, this idle time can be fully utilized to allow the spindle mechanism 2 to continue working. At the same time, the work station platform component 3, positioning component 4, cleaning and lifting component 5, and automatic loading and unloading component 6 on the other side of the spindle mechanism 2 work together to continue processing the sheet. This setting can further improve the processing efficiency.

[0113] like Figure 1 As shown, a spindle shield 91 is provided on the spindle support 20, and observation windows 910 are provided around the spindle shield 91, and the observation window 910 includes a frame and a transparent plate installed on the frame; a cooling fan is provided on the top of the spindle shield 91; an operation control box assembly is also provided on the spindle support 20; an integral shield assembly 92 is provided on the frame 1, and a double-opening inspection door 920 is provided on the front, right and rear sides of the integral shield assembly 92; a main electric box is provided at the bottom of the frame 1; and adjustable casters 93 and adjustable supports 94 are provided at intervals at the bottom of the frame 1. The inspection door can facilitate the debugging and maintenance of the machine; the observation window is made of a transparent plate, which has good lighting and is convenient for observing the working condition of the machine.

Claims

1. A fully automatic sheet polishing machine, comprising a frame, on which a spindle mechanism is arranged, Features: A workstation platform assembly is provided on the frame and below the spindle mechanism, and the workstation platform assembly is slidably arranged along the X-axis direction of the frame; a positioning assembly and a cleaning and lifting assembly are sequentially provided on the side of the workstation platform assembly away from the spindle mechanism, and a loading and unloading bracket is provided on the frame above the positioning assembly and the cleaning and lifting assembly, and an automatic loading and unloading assembly is provided on the loading and unloading bracket; The spindle mechanism comprises a spindle support, on which one or more grinding head lower pressure compensation assemblies are arranged in a manner that they can be raised and lowered through a main sliding device, a spindle fixing plate is arranged at the bottom end of the grinding head lower pressure compensation assembly, and a main lifting drive device for driving the spindle fixing plate to be raised and lowered is arranged on the spindle support; the grinding head lower pressure compensation assembly also comprises an upper fixing plate, between which one or more spindle assemblies that can be raised and lowered are arranged, and on the upper fixing plate is a lower pressure compensation drive device for driving the spindle assembly to be raised and lowered; the spindle assembly comprises a spindle drive device and a hollow combined grinding head arranged at the bottom end of a rotating shaft of the spindle drive device; The station platform assembly includes an X-axis translation assembly arranged on the frame, a Y-axis translation assembly is arranged on the X-axis translation assembly, a station accommodation seat is arranged on the Y-axis translation assembly, one or more fixture assemblies are arranged along the X-axis direction in the station accommodation seat, one or more fixture assemblies are arranged along the Y-axis direction, and a guide bucket is also arranged in the station accommodation seat; The positioning assembly comprises a positioning bracket, the positioning bracket comprises a positioning base plate, on which one or more primary positioning assemblies and secondary positioning assemblies corresponding to the primary positioning assemblies are arranged, the primary positioning assembly comprises one or more positioning rods arranged on the positioning base plate along the X-axis direction of the frame, a jig frame which can accommodate multiple sheets of material evenly spaced along a straight line is placed on the positioning rod, and a locking clamp for fixing the jig frame to the positioning rod is arranged on the positioning base plate and at the end of the positioning rod; the secondary positioning assembly comprises a right-angle positioning block fixedly arranged on the positioning base plate, the right-angle positioning block comprises a first fixed limit block end and a second fixed limit block end, a first movable limit device is arranged on a side opposite to the first fixed limit block end; a second movable limit device is arranged on a side opposite to the second fixed limit block end, and the first fixed limit block end, the second fixed limit block end, the first movable limit device and the second movable limit device form a rectangular shape; The cleaning lifting assembly includes a water tank arranged on a frame, a set of cleaning rack support plate lifting devices are respectively arranged on both sides of the water tank in the width direction, a cleaning rack support plate is arranged at the movable end of the cleaning rack support plate lifting device, and a cleaning rack corresponding to the secondary positioning assembly is arranged on the cleaning rack support plate; the cleaning rack includes a front side plate and a rear side plate, the front side plate and the rear side plate are connected by a pull rod to form a frame structure, and at least one arc-shaped notch is respectively arranged at the bottom of the front side plate and the rear side plate; more than three small pull rods for supporting sheets are also arranged between the front side plate and the rear side plate, and a bead strip is sleeved on the small pull rod, and the bead strip and the small pull rod are clearance-matched; The automatic loading and unloading assembly comprises one or more first slide rails arranged on the loading and unloading bracket, one or more first sliding blocks arranged on the first sliding rails, a translation bracket arranged on the first sliding block, a first driving device driving the translation bracket to reciprocate along the first slide rails is arranged between the loading and unloading brackets and the translation bracket; one or more second sliding blocks are arranged on the translation bracket in the vertical direction, a second slide rail is arranged on the second sliding block, a second driving device driving the second slide rail to be lifted and lowered is arranged between the translation bracket and the second slide rail, a material picking rack is arranged at the bottom end of the second slide rail, a material picking shaft is rotatably arranged on the material picking rack, a material suction assembly corresponding to the secondary positioning mechanism is arranged on the material picking shaft, a group of material suction assemblies comprises two material suction mechanisms, and the two material suction mechanisms are symmetrically arranged relative to the center line of the material picking shaft; a shaft rotation driving device driving the material picking shaft to rotate is also arranged on the material picking rack; The first driving device includes a first rack provided on the loading and unloading bracket, a first driving motor is provided on the translation bracket, a first gear is provided on the output shaft of the first driving motor, and the first gear is meshed with the first rack; the second driving device includes a second rack provided on the second slide rail, a second driving motor is provided on the translation bracket, a second gear is provided on the output shaft of the second driving motor, and the second gear is meshed with the second rack; The material reclaiming frame is an inverted U-shaped structure, and the material reclaiming frame includes a crossbeam, and a rotating shaft support extending downward is provided at both ends of the crossbeam, and a bearing is provided at the bottom end of the rotating shaft support, and the material reclaiming rotating shaft is rotatably arranged between the two rotating shaft supports through the bearing; The material suction mechanism includes a suction nozzle fixing block, on which one or more suction nozzles are arranged, an air passage communicating with the suction nozzles is arranged in the suction nozzle fixing block, and an air vent penetrating the suction nozzle fixing block and communicating with the air passage in the suction nozzle fixing block is also arranged on the suction nozzle fixing block, an air pipe joint is arranged in the air vent, and adjacent suction nozzle fixing blocks on the material taking rotating shaft are communicated through the air pipe; The rotating shaft rotation driving device comprises a third driving motor arranged on the cross beam of the material taking frame, an active synchronous wheel is arranged on the output shaft of the third driving motor, a driven synchronous wheel is arranged on the material taking rotating shaft, the active synchronous wheel and the driven synchronous wheel are connected by a synchronous belt, and a synchronous belt shield is also arranged on the rotating shaft support; The fully automatic sheet polishing machine also includes a polishing liquid circulation system and a vacuum system.

2. A fully automatic sheet polishing machine according to claim 1, Features: The grinding head lower pressure compensation assembly also includes an upper fixed plate support rod, one end of the upper fixed plate support rod is connected to the upper fixed plate, and the other end of the upper fixed plate support rod is connected to the spindle fixed plate; The main sliding device is a guide column and guide sleeve structure, the guide sleeve is fixed on the spindle bracket, one end of the guide column is connected to the upper fixed plate, and the other end of the guide column is connected to the spindle fixed plate; the main lifting drive device is a servo electric cylinder, the cylinder body of the servo electric cylinder is fixed on the spindle bracket, and the push rod of the servo electric cylinder is connected to the spindle fixed plate; A high-speed rotating joint is provided at the top of the rotating shaft of the spindle driving device; a spindle lower guide column is provided at the bottom end of the spindle driving device housing, a spindle lower guide sleeve is provided on the spindle fixing plate, and the spindle lower guide column cooperates with the spindle lower guide sleeve; a support rod connecting flange is provided at the top of the spindle driving device housing, more than two support rods are provided at the top of the support rod connecting flange, a floating joint flange is provided at the top of the support rod, a floating joint is provided at the center of the floating joint flange, more than one spindle upper guide column is provided on the floating joint flange, a spindle upper guide sleeve is provided on the upper fixing plate, and the spindle upper guide column cooperates with the spindle upper guide sleeve; the lower pressure compensation driving device is a cylinder, the cylinder body of the cylinder is fixed on the upper fixing plate, and the push rod of the cylinder is connected to the floating joint; An electric proportional valve is arranged on the main shaft support, and the electric proportional valve is connected with the cylinder through an air pipe.

3. A fully automatic sheet polishing machine according to claim 1, Features: The first movable limiting device includes a first movable limiting cylinder arranged at the bottom of the positioning base plate, a first avoidance hole is provided on the positioning base plate, a first movable limiting block is provided on the push rod of the first movable limiting cylinder, and the first movable limiting block passes through the first avoidance hole; the second movable limiting device includes a second movable limiting cylinder arranged at the bottom of the positioning base plate, a second avoidance hole is provided on the positioning base plate, a second movable limiting block is provided on the push rod of the second movable limiting cylinder, and the second movable limiting block passes through the second avoidance hole.

4. A fully automatic sheet polishing machine according to claim 1, Features: The number of the small pull rods is three, and the three small pull rods are arranged in an inverted isosceles triangle shape between the front side plate and the rear side plate; the cleaning rack support plate lifting device includes a sliding device fixing plate, the sliding device fixing plate is fixed to the frame through a support rod, and more than one sliding device is provided on the sliding device fixing plate; The sliding device is a combination of a linear bearing and a guide column. The linear bearing is installed on a fixed plate of the sliding device. The guide column cooperates with the linear bearing. A lower connecting plate is provided at the bottom end of the guide column, and an upper connecting plate is provided at the top end of the guide column. More than two connecting support rods extending downward are provided on the upper connecting plate, and the lower ends of the connecting support rods are connected to the cleaning rack support plate; a lifting cylinder is provided on the fixed plate of the sliding device, and the push rod of the lifting cylinder is connected to the upper connecting plate.

5. A fully automatic sheet polishing machine according to claim 2, Features: The polishing liquid circulation system comprises an upper shunt pipe group arranged at the top of the spindle support and a lower shunt pipe group arranged at the bottom of the spindle support, the upper shunt pipe group comprises an upper shunt main pipe and more than one upper shunt branch pipe connected to the upper shunt main pipe, a ball valve is arranged on the upper shunt branch pipe, and the ball valve is communicated with the high-speed rotary joint; the lower shunt pipe group is arranged at the bottom of the spindle fixing plate and extends to the upper side of each combined grinding head, and bamboo tubes are arranged on the lower shunt pipe group in a number exceeding the number of combined grinding heads; The polishing liquid circulation system also includes a polishing liquid barrel, on which a filtering assembly and a circulating pump are provided, the filtering assembly includes a filter mounting portion provided on the side of the polishing liquid barrel, the filter mounting portion is communicated with the polishing liquid barrel, a fine filter is provided in the filter mounting portion, a coarse filter is provided in the fine filter, a scraping device for preventing debris from clogging the coarse filter is also provided on the filter mounting portion, the scraping device includes a push-pull cylinder provided on the filter mounting portion, and a brush is provided on the push rod of the push-pull cylinder; the water outlet of the circulating pump is communicated with the upper diversion pipe group and the lower diversion pipe group, and the water outlet of the guide bucket is communicated with the coarse filter.

6. A fully automatic sheet polishing machine according to claim 5, Features: The vacuum system includes a first vacuum tank and a second vacuum tank arranged on a reverse polishing machine frame, the second vacuum tank is arranged directly below the first vacuum tank, the bottom of the first vacuum tank and the top of the second vacuum tank are communicated, a vacuum source connector is arranged on the top of the first vacuum tank, a first pipeline is arranged above the first vacuum tank, an air pipe connector is arranged on the first pipeline, the air pipe connector and the fixture assembly are connected through an air pipe, a second pipeline is also arranged between the top of the first vacuum tank and the top of the second vacuum tank, a drainage pipeline is arranged at the bottom of the second vacuum tank, and the drainage pipeline is communicated with a coarse filter.

7. A fully automatic sheet polishing machine according to claim 1, Features: On the frame, with the spindle mechanism as the symmetry center, a workstation platform component, a positioning component, a cleaning lifting component, a loading and unloading bracket and an automatic loading and unloading component are symmetrically arranged.

8. A fully automatic sheet polishing machine according to claim 1, Features: A spindle protection cover is provided on the spindle bracket, and observation windows are provided on all four sides of the spindle protection cover, and the observation windows include a frame and a transparent plate installed on the frame; a cooling fan is provided on the top of the spindle protection cover; an operation control box assembly is also provided on the spindle bracket; an integral protection cover assembly is provided on the frame, and double-opening inspection doors are provided on the front, right and rear sides of the integral protection cover assembly; a main electric box is provided at the lower part of the frame; and adjustable casters and adjustable supports are provided at intervals at the bottom of the frame.

Images