Workstation capable of automatically replacing, recycling and polishing abrasive paper

Abstract

The invention relates to the technical field of grinding machining equipment, in particular to a workstation capable of automatically replacing, recycling and grinding abrasive paper. Comprising a work station frame, a gantry moving platform, a new abrasive paper-iron sheet composite feeding mechanism, an electric control cabinet, a polishing mechanical arm, a polishing platform, a new abrasive paper-iron sheet composite recycling bin, a new abrasive paper attaching device, an old abrasive paper recycling bin and a conveying device. The work station frame comprises a frame body, a left rear opening door, a rear upper plate, a right front opening door, a right rear locking door, a front left opening door, a front right opening door, a rear lower plate, a base plate and a feeding top plate, the frame body is installed on the base plate, and the left rear opening door, the rear upper plate, the right front opening door, the right rear locking door, the front left opening door, the front right opening door, the rear lower plate and the feeding top plate are all installed on the frame body; the abrasive paper and the polishing head at the tail end of the mechanical arm can be quickly combined and separated by controlling the on-off state of the electromagnet, and compared with the design that the abrasive paper is torn off from the polishing head through a clamping jaw at present.

Description

Technical Field

[0001] The invention relates to the technical field of grinding processing equipment, in particular to a workstation capable of automatically replacing and recycling sandpaper for grinding. Background Art

[0002] For a long time, the replacement of waste sandpaper for grinding processing has been done manually. In the face of large-scale processing and production, the manual efficiency is low and it is difficult to ensure the processing quality. The existing automated sandpaper replacement solution relies on the end of the robot arm to locate a position, tear off the sandpaper, and then locate it to the place where the sheet is glued. The problem is that the end positioning when tearing off the waste sandpaper and the tearing process take time, and the stability of bonding new sandpaper fluctuates greatly. In order to solve the above-mentioned problem of low efficiency and accuracy in replacing sandpaper, this design proposes a sandpaper quick-change grinding workstation based on electromagnetic control. In the present invention, the electromagnetic quick-change device is used to directly discard iron sheets and sandpaper sheets, which is more efficient, and the combination and separation of new and old sandpaper sheets and iron sheets are completed by a device independent of the robot arm, which has higher pasting efficiency and better pasting stability. Summary of the invention

[0003] The purpose of the present invention is to provide a workstation in which sandpaper can be automatically replaced and recycled for polishing, so as to solve the problems raised in the above background technology. To achieve the above purpose, the present invention provides the following technical solutions: a workstation in which sandpaper can be automatically replaced and recycled for polishing, comprising a workstation frame, a gantry mobile platform, a new sandpaper-iron sheet composite feeding mechanism, an electric control cabinet, a polishing mechanical arm, a polishing platform, a new sandpaper-iron sheet composite recovery bucket, a new sandpaper attachment device, an old sandpaper recovery bucket, and a conveying device, wherein the workstation frame comprises a frame, a left rear door, a rear upper plate, a right front door, a right rear locking door, a front left door, a front right door, a rear lower plate, a base plate, and a loading top plate, wherein the frame is installed on the base plate, and the left rear door, the rear upper plate, the right front door, the right rear locking door, the front left door, the front right door, the rear lower plate, and the loading top plate are all installed on the frame.

[0004] Preferably, the electric control cabinet is installed on the base plate, and the sides of the electric control cabinet are respectively parallel to the upper rear plate and the lower rear plate, the new sandpaper-iron sheet composite feeding mechanism is installed on the frame, the bottom of the grinding robot arm is installed on the base plate, the grinding platform is installed on the base plate as a whole through an aluminum alloy frame, and the new sandpaper attaching device is installed on the base plate through an aluminum profile frame.

[0005] Preferably, the gantry moving platform includes an upper base plate, a first tank chain, a gantry moving linear guide rail, a first connecting plate, a longitudinal electric slide, a second connecting plate, an electromagnetic adsorption device, a third connecting plate, a first reinforcing plate, a second reinforcing plate, a gantry electric cylinder, a second tank chain, a fourth connecting plate, a transverse electric slide, a third reinforcing plate, a fourth reinforcing plate, a rear pad, a front pad, a front slider and a rear slider, the first tank chain is connected to the first connecting plate at both ends on the upper base plate, and the bottom of the first tank chain is parallel to the first connecting plate, the bottom of the gantry moving linear guide rail is installed on the upper base plate, and the first connecting plate The connecting plate is installed on the sliding platform of the longitudinal electric slide, the longitudinal electric slide is installed on the fourth connecting plate, and the second connecting plate is installed on the sliding platform of the longitudinal electric slide, the electromagnetic adsorption device is installed on the third connecting plate, and the electromagnetic adsorption device is connected to the gantry electric cylinder, the first reinforcing plate is connected to the second connecting plate and the third connecting plate, and the side of the first reinforcing plate coincides with the side of the second connecting plate and the side of the third connecting plate, the second reinforcing plate is connected to the second connecting plate and the third connecting plate, and the side of the second reinforcing plate coincides with the side of the second connecting plate and the third connecting plate, and the gantry electric cylinder The gantry electric cylinder is vertically mounted on the third connecting plate, and the gantry electric cylinder is concentric with the electromagnetic adsorption device, the electromagnetic adsorption device is composed of a mounting round table -, an adsorption left electromagnet -, a push rod - and an electromagnet -, and the rod of the gantry electric cylinder is connected to the push rod -, the upper surface of the mounting round table - is connected to the bottom surface of the third connecting plate, the adsorption left electromagnet -, the electromagnet - is connected to the mounting round table -, the bottom of the transverse electric slide is mounted on the upper bottom plate, and the side of the transverse electric slide coincides with the side of the upper bottom plate, the third reinforcing plate is vertically connected to the fourth connecting plate and the first connecting plate, and the side of the third reinforcing plate is connected to the fourth connecting plate The connecting plate overlaps with the side of the first connecting plate, the fourth reinforcing plate is vertically connected to the fourth connecting plate and the first connecting plate, and the side of the fourth reinforcing plate overlaps with the side of the fourth connecting plate and the first connecting plate, the upper side of the rear pad is connected to the bottom of the first connecting plate, and the lower side of the rear pad is connected to the upper side of the rear slider, the side of the rear pad overlaps with the side of the rear slider, and the upper side of the front pad is connected to the bottom of the first connecting plate, the lower side of the front pad is connected to the upper side of the front slider, and the side of the front pad overlaps with the side of the front slider, the rear slider is connected to the gantry moving linear guide rail, and the front slider is connected to the gantry moving linear guide rail.

[0006] Preferably, the new sandpaper-iron sheet composite feeding mechanism includes a first feeding electric cylinder, a first feeding connecting flange, a left limiting barrel of the new sandpaper-iron sheet composite, a left tray of the new sandpaper-iron sheet composite, a right tray of the new sandpaper-iron sheet composite, a second feeding connecting flange, a right limiting barrel of the new sandpaper-iron sheet composite, a feeding side plate and a second feeding electric cylinder. The internal installation of the feeding side plate is composed of an aluminum alloy frame, and the first feeding electric cylinder and the second feeding electric cylinder are installed in parallel on the lower surface of the top of the feeding side plate. The extended shaft portion of the first feeding electric cylinder passes through the opening at the top of the feeding side plate, and the inner wall of the first feeding connecting flange is connected to the outer wall of the extended shaft portion of the first feeding electric cylinder. The upper part of the first feeding connecting flange is connected to the bottom of the left tray of the new sandpaper-iron sheet composite, and The bottom of the left limit barrel of the new sandpaper-iron sheet complex is connected to the upper surface of the top of the feeding side plate, the left limit barrel of the new sandpaper-iron sheet complex is coaxially arranged with the first feeding electric cylinder, and the left pallet of the new sandpaper-iron sheet complex moves in the left limit barrel of the new sandpaper-iron sheet complex, the extended shaft portion of the second feeding electric cylinder passes through the opening at the top of the feeding side plate, and the inner wall of the second feeding connecting flange is connected to the outer wall of the extended shaft portion of the second feeding electric cylinder, the upper part of the second feeding connecting flange is connected to the bottom of the right pallet of the new sandpaper-iron sheet complex, and the bottom of the second feeding connecting flange is connected to the upper surface of the top of the feeding side plate, the second feeding connecting flange is coaxially arranged with the second feeding electric cylinder, and the right pallet of the new sandpaper-iron sheet complex moves in the second feeding connecting flange.

[0007] Preferably, the grinding robot arm includes a robot arm, a robot arm motor and an electromagnetic quick-change mechanism, the bottom of the robot arm is installed on a base plate, the robot arm motor is installed and connected to the end of the robot arm, and the electromagnetic quick-change mechanism is connected to the end of the robot arm motor, the electromagnetic quick-change mechanism includes sandpaper-, flocked iron sheet-, left electromagnet-, mounting disc-, conductive ring-, quick-change connecting flange-, connecting disc- and right electromagnet-, the sandpaper- is coaxially fitted with the flocked iron sheet- through Velcro, and the flocked iron sheet- is coaxially arranged with the mounting disc-, the flocked iron sheet- is provided with a shallow groove, and the shallow groove matches the protrusion on the mounting disc-, the left electromagnet- and the right electromagnet- are both installed in the circular hole opened on the mounting disc-, and the mounting disc- is coaxially connected with the quick-change connecting flange-, the inner ring of the conductive ring- cooperates with the quick-change connecting flange-, and the lower surface of the connecting disc- is connected to the top of the quick-change connecting flange-, and the upper surface of the connecting disc- is connected to the robot arm motor.

[0008] Preferably, the polishing platform includes an installation top plate, a first pressing block, a workpiece placement table, a second pressing block, a first linear guide rail, a polishing electric slide, a second linear guide rail, a third pressing block, a first slider, a first pad, a second pad, a second slider, a fourth pressing block, a polishing connecting plate, a third slider, a third pad, a fourth slider and a fourth pad. The first pressing block, the second pressing block, the third pressing block and the fourth pressing block are all composed of a suspension beam, an intermediate column and a base, and the suspension beam is installed on the intermediate column, the intermediate column is installed on the base, and the base is installed on the workpiece placement table. The first pressing block, the second pressing block, the first pressing block and the fourth pressing block are all installed on the workpiece placement table, and the bottom of the workpiece placement table is connected to the polishing connecting plate, and the polishing connecting plate is connected to the polishing electric slide. The guide rail is connected to the workpiece placing table, and the T-shaped structures on both sides of the workpiece placing table are respectively connected to the first slider, the second slider, the third slider and the fourth slider through the first pad, the second pad, the third pad and the fourth pad, the first slider and the second slider are installed on the first linear guide rail, and the first slider and the second slider can slide along the first linear guide rail, the third slider and the fourth slider are installed on the second linear guide rail, and the third slider and the fourth slider can slide along the second linear guide rail, the bottom surface of the first linear guide rail is installed on the mounting top plate, and the side edge of the first linear guide rail is parallel to the mounting top plate, the bottom surface of the second linear guide rail is installed on the mounting top plate, and the side edge of the second linear guide rail is parallel to the side edge of the mounting top plate, and an aluminum alloy frame is installed on the lower surface of the mounting top plate, and the aluminum alloy frame is installed on the base plate as a whole.

[0009] Preferably, the new sandpaper-iron sheet composite recycling barrel comprises a drawer handle, a drawer front panel, a drawer top panel and a drawer side panel. The drawer is installed in an aluminum profile frame, and the drawer side panels are installed on each side of the aluminum profile. The drawer top panel is installed on the upper part of the aluminum profile frame, and the side edges of the drawer top panel are aligned with the drawer side panels. The old sandpaper recycling barrel is structurally identical to the new sandpaper-iron sheet composite recycling barrel.

[0010] Preferably, the new sandpaper attaching device includes an attaching electric cylinder, an attaching top plate, an attaching connecting flange, an attaching sandpaper tray, a sandpaper limiting barrel and an attaching side plate, the attaching electric cylinder is installed on the bottom surface of the attaching top plate, and the extending shaft of the attaching electric cylinder passes through the opening on the attaching top plate and is connected to the attaching connecting flange, the attaching connecting flange is connected to the attaching sandpaper tray, and the bottom end of the sandpaper limiting barrel is connected to the upper surface of the attaching top plate, the attaching side plate is installed on the aluminum profile frame, and the overall aluminum alloy frame is installed on the base plate.

[0011] Preferably, the conveying device includes a conveying limit plate, a conveying rear guide side plate, a conveying rear side plate, a conveying belt, a conveying front side plate, a conveying right connecting plate, a conveying left connecting plate, and a conveying front guide side plate. The bottom surfaces of the conveying right connecting plate and the conveying left connecting plate are connected to the aluminum profile frame, and the upper surface of the conveying right connecting plate is connected to the bottom surfaces of the conveying rear side plate and the conveying front side plate. The side surfaces of the conveying right connecting plate and the conveying left connecting plate are connected to the side surfaces of the conveying belt, and the conveying rear guide side plate is connected to the conveying rear side plate, the conveying front guide side plate is connected to the conveying front side plate, and the conveying limit plate is connected to the conveying rear guide side plate and the conveying front guide side plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In the present invention, an electromagnetic quick-change device is designed, which can realize the rapid connection and separation of sandpaper and the grinding head at the end of the robotic arm by controlling the on and off state of the electromagnet. Compared with the current design of using claws to tear the sandpaper from the grinding head, the replacement process of this design is more stable and efficient.

[0014] In the present invention, a device for disassembling old sandpaper and sticking new sandpaper is designed. By controlling the electromagnetic adsorption device, electric cylinder and electric slide on the gantry moving platform, the flocked iron sheet can be separated from the old sandpaper and stuck with the new sandpaper. Compared with the current design of actively sticking sandpaper using the movement of a robotic arm, the replacement process of this design is independent of the movement of the robotic arm, which increases the effective working time of the robotic arm and improves the overall efficiency of the grinding operation.

[0015] In the present invention, a sandpaper circulation device is designed, which can realize the separation and recovery of old sandpaper, the assembly of new sandpaper and flocked iron sheet, and the storage of the sandpaper-iron sheet complex after assembly by controlling the movement of the transmission transposition and the gantry mobile platform. The sandpaper circulation device can effectively manage the sandpaper, reduce the frequency of manual use, and reduce labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 3 It is a schematic diagram of the structure of the gantry mobile platform of the present invention;

[0019] Figure 4 It is a side view of the gantry mobile platform of the present invention;

[0020] Figure 5 It is a schematic diagram of the structure of the conveying device of the present invention;

[0021] Figure 6It is a structural schematic diagram of the feeding mechanism of the new sandpaper-iron sheet composite of the present invention;

[0022] Figure 7 It is a structural schematic diagram of the polishing platform of the present invention;

[0023] Figure 8 A partial schematic diagram of the grinding platform of the present invention

[0024] Fig. 9 This is a schematic diagram of the structure of the new sandpaper attaching device of the present invention.

[0025] Fig.10 The structural explosion diagram of the electromagnetic quick-change mechanism of the present invention is

[0026] Fig.11 The schematic diagram of the structure of the electromagnetic adsorption device of the present invention is

[0027] Fig.12 This is a schematic diagram of the structure of the grinding robot arm of the present invention.

[0028] Fig.13 It is a schematic structural diagram of the new sandpaper-iron sheet composite recovery barrel of the present invention.

[0029] In the figure: 1. Workstation frame; 1001. Frame; 1002. Left rear door; 1003. Rear upper plate; 1004. Right front door; 1005. Right rear lock door; 1006. Front left door; 1007. Front right door; 1008. Rear lower plate; 1009. Base plate; 1010. Loading top plate; 2. Gantry moving platform; 2001. Upper bottom plate; 2002. First tank chain; 2003. Gantry moving linear guide rail; 2004. First connecting plate; 2005. Longitudinal electric slide; 2006. Second connecting plate; 2007. Electromagnetic adsorption device; 2007-1. Installation round table; 2007-2. Adsorption left electromagnet; 2007-3. Ejector rod; 2007-4. Adsorption right electromagnet; 200 8. Third connecting plate; 2009. First reinforcing plate; 2010. Second reinforcing plate; 2011. Gantry electric cylinder; 2012. Second tank chain; 2013. Fourth connecting plate; 2014. Horizontal electric slide; 2015. Third reinforcing plate; 2016. Fourth reinforcing plate; 2017. Rear pad; 2018. Front pad; 2019. Front slider; 2020. Rear slider; 3. New sandpaper-iron sheet composite feeding mechanism; 3001. First feeding electric cylinder; 3002. First feeding connecting flange; 3003. New sandpaper-iron sheet composite left limit barrel; 3004. New sandpaper-iron sheet composite left pallet; 3005. New sandpaper-iron sheet composite right pallet; 3006. Second feeding connecting flange; 3007. New Right limit barrel of sandpaper-iron sheet complex; 3008, feeding side plate; 3009, second feeding electric cylinder; 4, electric control cabinet; 5, grinding robot arm; 5001, robot arm; 5002, robot arm motor; 5003, electromagnetic quick change mechanism; 5003-1, sandpaper; 5003-2, flocked iron sheet; 5003-3, left electromagnet; 5003-4, mounting disc; 5003-5, conductive ring; 5003-6, quick change connecting flange; 5003-7, connecting disc; 5003-8, right electromagnet; 6, grinding platform; 6001, mounting top plate; 6002, first clamping block; 6003, workpiece placement table; 6004, second clamping block; 6005, first linear guide rail; 6006, grinding electric slide ;6007, second linear guide; 6008, third clamping block; 6009, first slider; 6010, first cushion block; 6011, second cushion block; 6012, second slider; 6013, fourth clamping block; 6014, cantilever beam; 6015, middle column; 6016, base; 6017, polishing connecting plate; 6018, third slider; 6019, third cushion block; 6020, fourth slider; 6021, fourth cushion block; 7, new sandpaper-iron sheet composite recycling bin; 7001, drawer handle; 7002, drawer front panel; 7003, drawer top plate; 7004, drawer side panel; 8, new sandpaper attaching device; 8001, attaching electric cylinder; 8002, attaching top plate; 8003, attaching connecting flange;8004, attached sandpaper tray; 8005, sandpaper limiter barrel; 8006, attached side plate; 9, old sandpaper recycling barrel; 10, conveyor device; 10001, conveyor limiter plate; 10002, conveyor rear guide side plate; 10003, conveyor rear side plate; 10004, conveyor belt; 10005, conveyor front side plate; 10006, conveyor right connecting plate; 10007, conveyor left connecting plate; 10008, conveyor front guide side plate. ; DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figures 1 to 13 The present invention provides a technical solution: a workstation for automatically replacing and recycling sandpaper for polishing, comprising a workstation frame 1, a gantry mobile platform 2, a new sandpaper-iron sheet composite feeding mechanism 3, an electric control cabinet 4, a polishing mechanical arm 5, a polishing platform 6, a new sandpaper-iron sheet composite recycling bucket 7, a new sandpaper attaching device 8, an old sandpaper recycling bucket 9, and a conveying device 10. The workstation frame 1 comprises a frame 1001, a left rear door 1002, a rear upper plate 1003, and a right front door 1004, right rear locking door 1005, front left door 1006, front right door 1007, rear lower plate 1008, base plate 1009 and loading top plate 1010, frame 1001 is installed on the base plate 1009, left rear door 1002, rear upper plate 1003, right front door 1004, right rear locking door 1005, front left door 1006, front right door 1007, rear lower plate 1008 and loading top plate 1010 are all installed on the frame 1001.

[0032] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 and Fig.13As shown, the electric control cabinet 4 is installed on the base plate 1009, and the side edges of the electric control cabinet 4 are respectively parallel to the rear upper plate 1003 and the rear lower plate 1008, the new sandpaper-iron sheet composite feeding mechanism 3 is installed on the frame 1001, the bottom of the grinding robot arm 5 is installed on the base plate 1009, the grinding platform 6 is integrally installed on the base plate 1009 through an aluminum alloy frame, and the new sandpaper attaching device 8 is installed on the base plate 1009 through an aluminum profile frame.

[0033] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 and Fig.13As shown, the gantry moving platform 2 includes an upper bottom plate 2001, a first tank chain 2002, a gantry moving linear guide rail 2003, a first connecting plate 2004, a longitudinal electric slide 2005, a second connecting plate 2006, an electromagnetic adsorption device 2007, a third connecting plate 2008, a first reinforcing plate 2009, a second reinforcing plate 2010, a gantry electric cylinder 2011, a second tank chain 2012, a fourth connecting plate 2013, a transverse electric slide 2014, a third reinforcing plate 2015, a fourth reinforcing plate 2016, a rear pad 2017, a front pad 2018, a front slider 2019 and a rear slider 2020. The first tank chain 2002 is connected to the first connecting plate 2004 at both ends of the upper bottom plate 2001, and the ... The bottom of the chain 2002 is parallel to the first connecting plate 2004, the bottom of the gantry moving linear guide rail 2003 is installed on the upper bottom plate 2001, and the first connecting plate 2004 is installed on the sliding platform of the longitudinal electric slide 2005, the longitudinal electric slide 2005 is installed on the fourth connecting plate 2013, and the second connecting plate 2006 is installed on the sliding platform of the longitudinal electric slide 2005, the electromagnetic adsorption device 2007 is installed on the third connecting plate 2008, and the electromagnetic adsorption device 2007 is connected to the gantry electric cylinder 2011, the first reinforcing plate 2009 is connected to the second connecting plate 2006 and the third connecting plate 2008, and the side of the first reinforcing plate 2009 is connected to the side of the second connecting plate 2006 and the third connecting plate 200 8, the second reinforcing plate 2010 is connected to the second connecting plate 2006 and the third connecting plate 2008, and the side of the second reinforcing plate 2010 is overlapped with the side of the second connecting plate 2006 and the third connecting plate 2008, the gantry electric cylinder 2011 is vertically installed on the third connecting plate 2008, and the gantry electric cylinder 2011 is concentric with the electromagnetic adsorption device 2007, the electromagnetic adsorption device 2007 is composed of a mounting truncated table 2007-1, an adsorption left electromagnet 2007-2, a push rod 2007-3 and an adsorption right electromagnet 2007-4, and the rod of the gantry electric cylinder 2011 is connected to the push rod 2007-3, the upper surface of the mounting truncated table 2007-1 is connected to the bottom surface of the third connecting plate 2008, the adsorption left electromagnet 2007- 2. The right adsorption electromagnet 2007-4 is connected to the mounting truncated table 2007-1, the bottom of the transverse electric slide 2014 is installed on the upper base plate 2001, and the side of the transverse electric slide 2014 coincides with the side of the upper base plate 2001, the third reinforcing plate 2015 is vertically connected to the fourth connecting plate 2013 and the first connecting plate 2004, and the side of the third reinforcing plate 2015 coincides with the side of the fourth connecting plate 2013 and the first connecting plate 2004, the fourth reinforcing plate 2016 is vertically connected to the fourth connecting plate 2013 and the first connecting plate 2004, and the side of the fourth reinforcing plate 2016 coincides with the side of the fourth connecting plate 2013 and the first connecting plate 2004, the upper side of the rear pad 2017 is connected to the bottom of the first connecting plate 2004,The lower side of the rear pad 2017 is connected to the upper side of the rear slider 2020, and the side of the rear pad 2017 overlaps with the side of the rear slider 2020, and the upper side of the front pad 2018 is connected to the bottom of the first connecting plate 2004, the lower side of the front pad 2018 is connected to the upper side of the front slider 2019, and the side of the front pad 2018 overlaps with the side of the front slider 2019, the rear slider 2020 is connected to the gantry moving linear guide 2003, and the front slider 2019 is connected to the gantry moving linear guide 2003.

[0034] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 and Fig.13As shown, the new sandpaper-iron sheet composite feeding mechanism 3 includes a first feeding electric cylinder 3001, a first feeding connecting flange 3002, a new sandpaper-iron sheet composite left limit barrel 3003, a new sandpaper-iron sheet composite left tray 3004, a new sandpaper-iron sheet composite right tray 3005, a second feeding connecting flange 3006, a new sandpaper-iron sheet composite right limit barrel 3007, a feeding side plate 3008 and a second feeding electric cylinder 3009, and the inner portion of the feeding side plate 3008 The installation is made of an aluminum alloy frame, and the first feeding electric cylinder 3001 and the second feeding electric cylinder 3009 are installed in parallel on the lower surface of the top of the feeding side plate 3008. The extended shaft portion of the first feeding electric cylinder 3001 passes through the opening at the top of the feeding side plate 3008, and the inner wall of the first feeding connecting flange 3002 is connected to the outer wall of the extended shaft portion of the first feeding electric cylinder 3001, and the upper part of the first feeding connecting flange 3002 is connected to the bottom of the left tray 3004 of the new sandpaper-iron sheet complex , and the bottom of the left limit barrel 3003 of the new sandpaper-iron sheet complex is connected to the upper surface of the top of the feeding side plate 3008, the left limit barrel 3003 of the new sandpaper-iron sheet complex is coaxially arranged with the first feeding electric cylinder 3001, and the left tray 3004 of the new sandpaper-iron sheet complex moves in the left limit barrel 3003 of the new sandpaper-iron sheet complex, the extended shaft part of the second feeding electric cylinder 3009 passes through the opening at the top of the feeding side plate 3008, and the second feeding connecting flange 3006 The inner wall is connected to the outer wall of the extended shaft part of the second feeding electric cylinder 3009, the upper part of the second feeding connecting flange 3006 is connected to the bottom of the right tray 3005 of the new sandpaper-iron sheet complex, and the bottom of the second feeding connecting flange 3006 is connected to the upper surface of the top of the feeding side plate 3008, the second feeding connecting flange 3006 is coaxially arranged with the second feeding electric cylinder 3009, and the right tray 3005 of the new sandpaper-iron sheet complex moves in the second feeding connecting flange 3006.

[0035] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 and Fig.13As shown, the grinding robot 5 includes a robot 5001, a robot motor 5002 and an electromagnetic quick-change mechanism 5003. The bottom of the robot 5001 is installed on the base plate 1009. The robot motor 5002 is installed and connected to the end of the robot 5001, and the electromagnetic quick-change mechanism 5003 is connected to the end of the robot motor 5002. The electromagnetic quick-change mechanism 5003 includes sandpaper 5003-1, a flocked iron sheet 5003-2, a left electromagnet 5003-3, a mounting disc 5003-4, a conductive ring 5003-5, a quick-change connecting flange 5003-6, a connecting disc 5003-7 and a right electromagnet 5003-8. The sandpaper 5003-1 is connected to the flocked iron sheet 5003 by Velcro. -2 are coaxially fitted, and the flocked iron sheet 5003-2 is coaxially arranged with the mounting disc 5003-4, a shallow groove is opened on the flocked iron sheet 5003-2, and the shallow groove matches the protrusion on the mounting disc 5003-4, the left electromagnet 5003-3 and the right electromagnet 5003-8 are both installed in the circular holes opened on the mounting disc 5003-4, and the mounting disc 5003-4 is coaxially connected with the quick-change connecting flange 5003-6, the inner ring of the conductive ring 5003-5 cooperates with the quick-change connecting flange 5003-6, and the lower surface of the connecting disc 5003-7 is connected to the top of the quick-change connecting flange 5003-6, and the upper surface of the connecting disc 5003-7 is connected to the robot arm motor 5002.

[0036] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 and Fig.13As shown, the grinding platform 6 includes an installation top plate 6001, a first clamping block 6002, a workpiece placement table 6003, a second clamping block 6004, a first linear guide rail 6005, a grinding electric slide 6006, a second linear guide rail 6007, a third clamping block 6008, a first slider 6009, a first cushion block 6010, a second cushion block 6011, a second slider 6012, a fourth clamping block 6013, a grinding connecting plate 6017, a third slider 6018, a third cushion block 6019, a fourth slider 6020 and a fourth cushion block 6021, the first clamping block 6002, The second clamping block 6004, the third clamping block 6008 and the fourth clamping block 6013 are all composed of a suspension beam 6014, an intermediate column 6015 and a base 6016, and the suspension beam 6014 is installed on the intermediate column 6015, the intermediate column 6015 is installed on the base 6016, and the base 6016 is installed on the workpiece placement table 6003, the first clamping block 6002, the second clamping block 6004, the first clamping block 6002 and the fourth clamping block 6013 are all installed on the workpiece placement table 6003, and the bottom of the workpiece placement table 6003 is connected to the grinding connecting plate 6017, and the grinding connecting plate 6017 is connected to the grinding connecting plate 6017. The connecting plate 6017 is connected to the polishing electric slide 6006, and the T-shaped structures on both sides of the workpiece placement table 6003 are respectively connected to the first slider 6009, the second slider 6012, the third slider 6018, and the fourth slider 6020 through the first cushion block 6010, the second cushion block 6011, the third cushion block 6019, and the fourth cushion block 6021. The first slider 6009 and the second slider 6012 are installed on the first linear guide rail 6005, and the first slider 6009 and the second slider 6012 can slide along the first linear guide rail 6005. The third slider 6018 and the fourth slider 6020 is installed on the second linear guide rail 6007, and the third slider 6018 and the fourth slider 6020 can slide along the second linear guide rail 6007, the bottom surface of the first linear guide rail 6005 is installed on the mounting top plate 6001, and the side of the first linear guide rail 6005 is parallel to the mounting top plate 6001, the bottom surface of the second linear guide rail 6007 is installed on the mounting top plate 6001, and the side of the second linear guide rail 6007 is parallel to the side of the mounting top plate 6001, an aluminum alloy frame is installed on the lower surface of the mounting top plate 6001, and the aluminum alloy frame is installed on the base plate 1009 as a whole.

[0037] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 and Fig.13As shown, the new sandpaper-iron sheet composite recycling bin 7 includes a drawer handle 7001, a drawer front panel 7002, a drawer top panel 7003 and a drawer side panel 7004. The drawer is installed in an aluminum profile frame, and the drawer side panels 7004 are installed on each side of the aluminum profile. The drawer top panel 7003 is installed on the upper part of the aluminum profile frame, and the side of the drawer top panel 7003 is aligned with the drawer side panel 7004. The old sandpaper recycling bin 9 is structurally exactly the same as the new sandpaper-iron sheet composite recycling bin 7.

[0038] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 and Fig.13 As shown, the new sandpaper attaching device 8 includes an attaching electric cylinder 8001, an attaching top plate 8002, an attaching connecting flange 8003, an attaching sandpaper tray 8004, a sandpaper limiting barrel 8005 and an attaching side plate 8006. The attaching electric cylinder 8001 is installed on the bottom surface of the attaching top plate 8002, and the extended shaft of the attaching electric cylinder 8001 passes through the opening on the attaching top plate 8002 and is connected to the attaching connecting flange 8003. The attaching connecting flange 8003 is connected to the attaching sandpaper tray 8004, and the bottom end of the sandpaper limiting barrel 8005 is connected to the upper surface of the attaching top plate 8002. The attaching side plate 8006 is installed on the aluminum profile frame, and the overall aluminum alloy frame is installed on the base plate 1009.

[0039] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 and Fig.13As shown, the conveying device 10 includes a conveying limit plate 10001, a conveying rear guide side plate 10002, a conveying rear side plate 10003, a conveying belt 10004, a conveying front side plate 10005, a conveying right connecting plate 10006, a conveying left connecting plate 10007, and a conveying front guide side plate 10008. The bottom surfaces of the conveying right connecting plate 10006 and the conveying left connecting plate 10007 are connected to the aluminum profile frame, and the upper surface of the conveying right connecting plate 10006 is connected to the conveying rear side Plate 10003 is connected to the bottom surface of the front conveying side plate 10005, the sides of the right conveying connecting plate 10006 and the left conveying connecting plate 10007 are connected to the side of the conveying belt 10004, and the rear conveying guide side plate 10002 is connected to the rear conveying side plate 10003, the front conveying guide side plate 10008 is connected to the front conveying side plate 10005, and the conveying limiting plate 10001 is connected to the rear conveying guide side plate 10002 and the front conveying guide side plate 10008.

[0040] The use method and advantages of the present invention: When the sandpaper can be automatically replaced and recycled, the working process of the grinding workstation is as follows:

[0041] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 and Fig.13 As shown, when grinding processing is required, first the right front door 1004 and the right rear locked door 1005 are opened, and the grinding electric slide 6006 on the grinding platform 6 moves, driving the workpiece placement table 6003 to move toward the right front door 1004 on the first linear guide rail 6005 and the second linear guide rail 6007. When the grinding electric slide 6006 moves to the end and transports the workpiece placement table 6003 to the right front door 1004, the worker moves the first linear guide rail 6005 and the second linear guide rail 6007 to the end. The first clamping block 6002, the second clamping block 6004, the third clamping block 6008 and the fourth clamping block 6013 are adjusted in position so that they can clamp the workpiece to be polished. After the workpiece is clamped, the polishing electric slide 6006 on the polishing platform 6 moves, driving the workpiece placement table 6003 to move on the first linear guide rail 6005 and the second linear guide rail 6007, and move to the polishing processing position, and then the right front door 1004 and the right rear locking door 1005 are closed.

[0042] The grinding robot arm 5 starts to move, and adjusts the posture of the electromagnetic quick-change mechanism 5003 at the end to align it with the new sandpaper-iron sheet complex left limit barrel 3003 of the new sandpaper-iron sheet complex feeding mechanism 3, and makes the mounting disc 5003-6 of the electromagnetic quick-change mechanism 5003 flush with the upper end of the left limit barrel 3003 of the new sandpaper-iron sheet complex. Subsequently, the first feeding electric cylinder 3001 of the new sandpaper-iron sheet complex feeding mechanism 3 starts to move upward, and the new sandpaper-iron sheet complex left tray 3004 is on the new sandpaper-iron sheet complex. The sandpaper-iron sheet complex moves upward in the left limit barrel 3003, driving the sandpaper-iron sheet complex in the barrel to move upward. When the sandpaper-iron sheet complex reaches the end of the left limit barrel 3003 of the new sandpaper-iron sheet complex, the first loading electric cylinder 3001 stops moving, and then the left electromagnet 5003-3 and the right electromagnet 5003-8 on the electromagnetic quick-change mechanism 5003 lose power, and the sandpaper-iron sheet complex is adsorbed, completing the combination of the sandpaper-iron sheet complex and the grinding table. Subsequently, the grinding head moves to the grinding platform 6 to start the grinding operation.

[0043] When the sandpaper needs to be replaced, the large mechanical arm motor 5002 of the grinding mechanical arm 5 stops moving, and the mechanical arm 5001 moves clockwise toward the new sandpaper-iron sheet complex feeding mechanism 3. When it moves to the position of the conveying device 10, the left electromagnet 5003-3 and the right electromagnet 5003-8 on the electromagnetic quick-change mechanism 5003 are energized, and the sandpaper-iron sheet complex is detached and falls onto the conveyor belt 10004 of the conveying device 10. The conveyor belt 10004 starts to move, and transports the sandpaper-iron sheet complex to contact with the conveying limit plate 10001 and then stops. At the same time, the grinding mechanical arm 5 continues to move, and the posture of the electromagnetic quick-change mechanism 5003 at the end is adjusted to align it with the new sandpaper-iron sheet complex left limit barrel 3003 of the new sandpaper-iron sheet complex feeding mechanism 3, and the electromagnetic quick-change The mounting disc 5003-6 of the mechanism 5003 is flush with the upper end of the left limit barrel 3003 of the new sandpaper-iron sheet complex. Subsequently, the first loading electric cylinder 3001 of the new sandpaper-iron sheet complex loading mechanism 3 starts to move upward, driving the left tray 3004 of the new sandpaper-iron sheet complex to move upward in the left limit barrel 3003 of the new sandpaper-iron sheet complex, driving the sandpaper-iron sheet complex in the barrel to move upward. When the sandpaper-iron sheet complex reaches the end of the left limit barrel 3003 of the new sandpaper-iron sheet complex, the first loading electric cylinder 3001 stops moving, and then the left electromagnet 5003-3 and the right electromagnet 5003-8 on the electromagnetic quick-change mechanism 5003 lose power, and the sandpaper-iron sheet complex is adsorbed, completing the combination of the sandpaper-iron sheet complex and the grinding table, and completing the sandpaper replacement.

[0044] When the sandpaper-iron sheet complex is transported to contact with the conveying limit plate 10001, the transverse electric slide 2014 of the gantry moving platform 2 starts to move, and drives the first connecting plate 2004 to move toward the conveying device 10 on the gantry moving linear guide rail 2003. When the electromagnetic adsorption device 2007 is aligned with the sandpaper-iron sheet complex, the transverse electric slide 2014 stops moving, and the longitudinal electric slide 2005 starts to move downward and drives the second connecting plate 2006 and the gantry electric cylinder 2011 connected thereto to move, so that the electromagnetic adsorption device 2007 contacts with the sandpaper-iron sheet complex, and then the left electromagnet 2007-2 and the right electromagnet 2007-4 lose adsorption. The sandpaper-iron sheet complex is adsorbed by electricity, and then the longitudinal electric slide 2005 starts to move upward and drives the second connecting plate 2006 and the gantry electric cylinder 2011 connected thereto to move. When the lower end surface of the sandpaper-iron sheet complex is 5 cm away from the conveyor belt 10004, the longitudinal electric slide 2005 stops moving, and then the transverse electric slide 2014 starts to move away from the conveyor device 10. When the sandpaper-iron sheet complex is located on the old sandpaper recycling bucket 9, the transverse electric slide 2014 stops moving, and then the gantry electric cylinder 2011 starts to move and drives the push rod 2007-3 to move, pushing the old sandpaper off the iron sheet, and the old sandpaper falls into the old sandpaper recycling bucket 9. The gantry electric The cylinder 2011 is reset, and then the horizontal electric slide 2014 continues to move away from the conveying device 10. When the iron sheet is located above the sandpaper limiting barrel 8005 of the new sandpaper attaching device 8, the horizontal electric slide 2014 stops moving, and the longitudinal electric slide 2005 moves downward, so that the bottom surface of the third connecting plate 2008 contacts the upper end surface of the sandpaper limiting barrel 8005. Then the electric cylinder 8001 of the new sandpaper attaching device 8 moves upward to drive the attached sandpaper tray 8004 to move upward. When the new sandpaper in the sandpaper limiting barrel 8005 is attached to the iron sheet, the longitudinal electric slide 2005 is reset, and then the horizontal electric slide 2014 continues to move away from the conveying device 10. When the new sandpaper-iron sheet complex is located on the new sandpaper-iron sheet complex recovery bucket 7, the horizontal electric slide 2014 stops moving, the left adsorption electromagnet 2007-2 and the right adsorption electromagnet 2007-4 are energized, and the new sandpaper-iron sheet complex falls into the new sandpaper-iron sheet complex recovery bucket 7, and then the horizontal electric slide 2014 is reset. The old sandpaper and the new sandpaper-iron sheet complex can be taken out by opening the front left door 1006 and the front right door 1007, pulling out the drawers on the old sandpaper recovery bucket 9 and the new sandpaper-iron sheet complex recovery bucket 7, and after the new sandpaper-iron sheet complex is taken out, it is manually placed in the new sandpaper-iron sheet complex feeding mechanism 3, and the entire sandpaper circulation is completed.

[0045] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A workstation capable of automatically replacing and recycling sandpaper for polishing, comprising a workstation frame (1), a gantry mobile platform (2), a new sandpaper-iron sheet composite material feeding mechanism (3), an electric control cabinet (4), a polishing robot arm (5), a polishing platform (6), a new sandpaper-iron sheet composite material recycling bucket (7), a new sandpaper attaching device (8), an old sandpaper recycling bucket (9), and a conveying device (10), characterized in that: The workstation frame (1) comprises a frame (1001), a left rear door (1002), a rear upper plate (1003), a right front door (1004), a right rear locking door (1005), a front left door (1006), a front right door (1007), a rear lower plate (1008), a base plate (1009) and a loading top plate (1010); the frame (1001) is mounted on the base plate (1009); the left rear door (1002), the rear upper plate (1003), the right front door (1004), the right rear locking door (1005), the front left door (1006), the front right door (1007), the rear lower plate (1008) and the loading top plate (1010) are all mounted on the frame (1001); The electric control cabinet (4) is mounted on the base plate (1009), and the side edges of the electric control cabinet (4) are respectively parallel to the upper rear plate (1003) and the lower rear plate (1008); the new sandpaper-iron sheet composite feeding mechanism (3) is mounted on the frame (1001); the bottom of the grinding robot arm (5) is mounted on the base plate (1009); the grinding platform (6) is integrally mounted on the base plate (1009) through an aluminum alloy frame; and the new sandpaper attaching device (8) is mounted on the base plate (1009) through an aluminum profile frame.

2. A workstation for automatically replacing and recycling sandpaper according to claim 1, characterized in that: The gantry moving platform (2) comprises an upper base plate (2001), a first tank chain (2002), a gantry moving linear guide rail (2003), a first connecting plate (2004), a longitudinal electric slide (2005), a second connecting plate (2006), an electromagnetic adsorption device (2007), a third connecting plate (2008), a first reinforcing plate (2009), a second reinforcing plate (2010), a gantry electric cylinder (2011), a second tank chain (2012), a fourth connecting plate (2013), a transverse electric slide (2014), a third reinforcing plate (2015), a fourth reinforcing plate (2016), a rear pad (2017), a front pad (2018), a front slider (2019) and a rear slider (2020). 020), the two ends of the first tank chain (2002) are respectively connected to the first connecting plate (2004) on the upper bottom plate (2001), and the bottom of the first tank chain (2002) is parallel to the first connecting plate (2004), the bottom of the gantry moving linear guide rail (2003) is installed on the upper bottom plate (2001), and the first connecting plate (2004) is installed on the sliding platform of the longitudinal electric slide (2005), the longitudinal electric slide (2005) is installed on the fourth connecting plate (2013), and the second connecting plate (2006) is installed on the sliding platform of the longitudinal electric slide (2005), the electromagnetic adsorption device (2007) is installed on the third connecting plate (2008), and the electromagnetic adsorption device (2007) is connected to the gantry electric cylinder (2011), the first reinforcing plate (2009) is connected to the second connecting plate (2006) and the third connecting plate (2008), and the side of the first reinforcing plate (2009) coincides with the side of the second connecting plate (2006) and the side of the third connecting plate (2008), the second reinforcing plate (2010) is connected to the second connecting plate (2006) and the third connecting plate (2008), and the side of the second reinforcing plate (2010) coincides with the side of the second connecting plate (2006) and the third connecting plate (2008), the gantry electric cylinder (2011) is vertically mounted on the third connecting plate (2008), and the gantry electric cylinder (2011) is connected to the electromagnetic adsorption device (2007) Concentrically, the electromagnetic adsorption device (2007) is composed of a mounting truncated table (2007-1), an adsorption left electromagnet (2007-2), a push rod (2007-3) and an adsorption right electromagnet (2007-4), and the rod of the gantry electric cylinder (2011) is connected to the push rod (2007-3), the upper surface of the mounting truncated table (2007-1) is connected to the bottom surface of the third connecting plate (2008), the adsorption left electromagnet (2007-2) and the adsorption right electromagnet (2007-4) are connected to the mounting truncated table (2007-1), the bottom of the transverse electric slide (2014) is mounted on the upper base plate (2001), and the side of the transverse electric slide (2014) coincides with the side of the upper base plate (2001),The third reinforcing plate (2015) is vertically connected to the fourth connecting plate (2013) and the first connecting plate (2004), and the side of the third reinforcing plate (2015) overlaps with the side of the fourth connecting plate (2013) and the first connecting plate (2004); the fourth reinforcing plate (2016) is vertically connected to the fourth connecting plate (2013) and the first connecting plate (2004), and the side of the fourth reinforcing plate (2016) overlaps with the side of the fourth connecting plate (2013) and the first connecting plate (2004); the upper side of the rear pad (2017) is connected to the bottom of the first connecting plate (2004); , and the lower side of the rear pad (2017) is connected to the upper side of the rear slider (2020), the side of the rear pad (2017) and the side of the rear slider (2020) are overlapped, and the upper side of the front pad (2018) is connected to the bottom of the first connecting plate (2004), the lower side of the front pad (2018) is connected to the upper side of the front slider (2019), and the side of the front pad (2018) and the side of the front slider (2019) are overlapped, the rear slider (2020) is connected to the gantry moving linear guide rail (2003), and the front slider (2019) is connected to the gantry moving linear guide rail (2003). , 3. A workstation for automatically replacing and recycling sandpaper according to claim 1, characterized in that: The new sandpaper-iron sheet composite material feeding mechanism (3) comprises a first feeding electric cylinder (3001), a first feeding connection flange (3002), a new sandpaper-iron sheet composite material left limit barrel (3003), a new sandpaper-iron sheet composite material left tray (3004), a new sandpaper-iron sheet composite material right tray (3005), a second feeding connection flange (3006), a new sandpaper-iron sheet composite material right limit barrel (3007), a feeding side plate (3008) and a second feeding electric cylinder (3009), wherein the inner portion of the feeding side plate (3008) The installation is made of an aluminum alloy frame, and the first feeding electric cylinder (3001) and the second feeding electric cylinder (3009) are installed in parallel on the lower surface of the top of the feeding side plate (3008), the extended shaft portion of the first feeding electric cylinder (3001) passes through the opening at the top of the feeding side plate (3008), and the inner wall of the first feeding connecting flange (3002) is connected to the outer wall of the extended shaft portion of the first feeding electric cylinder (3001), and the upper part of the first feeding connecting flange (3002) is connected to the bottom of the left tray (3004) of the new sandpaper-iron sheet composite The bottom of the left limit barrel (3003) of the new sandpaper-iron sheet complex is connected to the upper surface of the top of the feeding side plate (3008), the left limit barrel (3003) of the new sandpaper-iron sheet complex is coaxially arranged with the first feeding electric cylinder (3001), and the left tray (3004) of the new sandpaper-iron sheet complex moves in the left limit barrel (3003) of the new sandpaper-iron sheet complex, the extended shaft portion of the second feeding electric cylinder (3009) passes through the opening at the top of the feeding side plate (3008), and the second feeding connecting flange (3006) The inner wall is connected to the outer wall of the extended shaft part of the second feeding electric cylinder (3009), the upper part of the second feeding connecting flange (3006) is connected to the bottom of the right tray (3005) of the new sandpaper-iron sheet composite, and the bottom of the second feeding connecting flange (3006) is connected to the upper surface of the top of the feeding side plate (3008), the second feeding connecting flange (3006) and the second feeding electric cylinder (3009) are coaxially arranged, and the right tray (3005) of the new sandpaper-iron sheet composite moves in the second feeding connecting flange (3006).

4. A workstation for automatically replacing and recycling sandpaper according to claim 1, characterized in that: The grinding robot arm (5) comprises a robot arm (5001), a robot arm motor (5002) and an electromagnetic quick-change mechanism (5003); the bottom of the robot arm (5001) is mounted on a base plate (1009); the robot arm motor (5002) is mounted and connected to the end of the robot arm (5001); and the electromagnetic quick-change mechanism (5003) is connected to the end of the robot arm motor (5002); the electromagnetic quick-change mechanism (5003) comprises sandpaper (5003-1), a flocked iron sheet (5003-2), a left electromagnet (5003-3), a mounting disc (5003-4), a conductive ring (5003-5), a quick-change connecting flange (5003-6), a connecting disc (5003-7) and a right electromagnet (5003-8); the sandpaper (5003-1) is connected to the flocked iron sheet by Velcro (5003-2) are coaxially fitted, and the flocked iron sheet (5003-2) and the mounting disc (5003-4) are coaxially arranged, the flocked iron sheet (5003-2) is provided with a shallow groove, and the shallow groove matches the protrusion on the mounting disc (5003-4), the left electromagnet (5003-3) and the right electromagnet (5003-8) are both installed in the circular hole opened on the mounting disc (5003-4), and the mounting disc (5003-4) is coaxially connected to the quick-change connecting flange (5003-6), the inner ring of the conductive ring (5003-5) is matched with the quick-change connecting flange (5003-6), and the lower surface of the connecting disc (5003-7) is connected to the top of the quick-change connecting flange (5003-6), and the upper surface of the connecting disc (5003-7) is connected to the robot arm motor (5002).

5. A workstation for automatically replacing and recycling sandpaper according to claim 1, characterized in that: The polishing platform (6) includes an installation top plate (6001), a first clamping block (6002), a workpiece placement table (6003), a second clamping block (6004), a first linear guide rail (6005), a polishing electric slide (6006), a second linear guide rail (6007), a third clamping block (6008), a first slider (6009), a first cushion block (6010), a second cushion block (6011), a second slider (6012), a fourth clamping block (6013), a polishing connecting plate (6017), a third slider (6018), a third cushion block (6019), a fourth slider (6020) and a fourth cushion block (6021), wherein the first clamping block (6002), The second clamping block (6004), the third clamping block (6008) and the fourth clamping block (6013) are all composed of a suspension beam (6014), an intermediate column (6015) and a base (6016), and the suspension beam (6014) is installed on the intermediate column (6015), the intermediate column (6015) is installed on the base (6016), and the base (6016) is installed on the workpiece placement table (6003), the first clamping block (6002), the second clamping block (6004), the first clamping block (6002) and the fourth clamping block (6013) are all installed on the workpiece placement table (6003), and the bottom of the workpiece placement table (6003) is connected to the grinding connection plate (6017). The polishing connecting plate (6017) is connected to the polishing electric slide (6006), and the T-shaped structures on both sides of the workpiece placement table (6003) are respectively connected to the first slider (6009), the second slider (6012), the third slider (6018), and the fourth slider (6020) through the first cushion block (6010), the second cushion block (6011), the third cushion block (6019), and the fourth cushion block (6021). The first slider (6009) and the second slider (6012) are installed on the first linear guide rail (6005), and the first slider (6009) and the second slider (6012) can slide along the first linear guide rail (6005). The third slider (6018) and The fourth slider (6020) is installed on the second linear guide rail (6007), and the third slider (6018) and the fourth slider (6020) can slide along the second linear guide rail (6007); the bottom surface of the first linear guide rail (6005) is installed on the mounting top plate (6001), and the side of the first linear guide rail (6005) is parallel to the mounting top plate (6001); the bottom surface of the second linear guide rail (6007) is installed on the mounting top plate (6001), and the side of the second linear guide rail (6007) is parallel to the side of the mounting top plate (6001); an aluminum alloy frame is installed on the lower surface of the mounting top plate (6001), and the aluminum alloy frame is installed as a whole on the base plate (1009).

6. A workstation for automatically replacing and recycling sandpaper according to claim 1, characterized in that: The new sandpaper-iron sheet composite recycling barrel (7) comprises a drawer handle (7001), a drawer front panel (7002), a drawer top panel (7003) and a drawer side panel (7004); the drawer is installed in an aluminum profile frame, and the drawer side panels (7004) are installed on each side of the aluminum profile; the drawer top panel (7003) is installed on the upper part of the aluminum profile frame, and the side of the drawer top panel (7003) is aligned with the drawer side panel (7004); the old sandpaper recycling barrel (9) is structurally identical to the new sandpaper-iron sheet composite recycling barrel (7).

7. A workstation for automatically replacing and recycling sandpaper according to claim 1, characterized in that: The new sandpaper attaching device (8) comprises an attaching electric cylinder (8001), an attaching top plate (8002), an attaching connecting flange (8003), an attaching sandpaper tray (8004), a sandpaper limiting barrel (8005) and an attaching side plate (8006); the attaching electric cylinder (8001) is mounted on the bottom surface of the attaching top plate (8002); the extending shaft of the attaching electric cylinder (8001) passes through an opening on the attaching top plate (8002) and is connected to the attaching connecting flange (8003); the attaching connecting flange (8003) is connected to the attaching sandpaper tray (8004); the bottom end of the sandpaper limiting barrel (8005) is connected to the upper surface of the attaching top plate (8002); the attaching side plate (8006) is mounted on an aluminum profile frame; and the entire aluminum alloy frame is mounted on a base plate (1009).

8. A workstation for automatically replacing and recycling sandpaper according to claim 1, characterized in that: The conveying device (10) comprises a conveying limit plate (10001), a conveying rear guide side plate (10002), a conveying rear side plate (10003), a conveying belt (10004), a conveying front side plate (10005), a conveying right connecting plate (10006), a conveying left connecting plate (10007), and a conveying front guide side plate (10008), wherein the bottom surfaces of the conveying right connecting plate (10006) and the conveying left connecting plate (10007) are connected to an aluminum profile frame, and the upper surface of the conveying right connecting plate (10006) is connected to the conveying rear side plate The conveying right connecting plate (10006) and the conveying left connecting plate (10007) are connected to the side of the conveying belt (10004), and the conveying rear guide side plate (10002) is connected to the conveying rear side plate (10003), the conveying front guide side plate (10008) is connected to the conveying front side plate (10005), and the conveying limiting plate (10001) is connected to the conveying rear guide side plate (10002) and the conveying front guide side plate (10008).

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