阅读说明：本技术 一种金属铸件除锈回收装置 (Metal casting rust removal and recovery device ) 是由 宗泽宇 于 2021-06-21 设计创作，主要内容包括：本发明公开了一种金属铸件除锈回收装置,涉及铸件除锈技术领域,包括取放组件、移动组件、夹持组件、除锈组件,移动组件包括移动单元、冲洗单元和用于支撑的支撑架,取放组件包括用于夹取铸件的取件单元和用于盛放化学清洗液的存放桶,夹持组件包括夹持支撑架、齿轮单元、夹持单元和回收仓,除锈组件包括除锈单元和动力单元,本发明取放组件和移动组件能够全自动的对金属铸件进行取放和移动,解决了人误操作导致被铸件砸伤的问题,除锈组件能够对金属铸件内外面进行除锈,同时刀具在自转的时候进行公转,使除锈更彻底更全面,本发明除锈时将化学处理和机械打磨分开,避免对刀具的腐蚀,延长了刀具的使用寿命。(The invention discloses a metal casting rust removal and recovery device, which relates to the technical field of casting rust removal and comprises a taking and placing assembly, a moving assembly, a clamping assembly and a rust removal assembly, wherein the moving assembly comprises a moving unit, a washing unit and a support frame for supporting, the taking and placing assembly comprises a taking unit for clamping a casting and a storage barrel for containing chemical cleaning liquid, the clamping assembly comprises a clamping support frame, a gear unit, a clamping unit and a recovery bin, and the rust removal assembly comprises a rust removal unit and a power unit. The corrosion to the cutter is avoided, and the service life of the cutter is prolonged.)

1. The utility model provides a metal casting rust cleaning recovery unit, is including getting put subassembly, removal subassembly, centre gripping subassembly, rust cleaning subassembly, its characterized in that: the movable assembly is an installation platform for taking and placing the assembly, the clamping assembly is arranged below the movable assembly, the rust removing assembly is installed on the clamping assembly, the movable assembly comprises a movable unit, a washing unit and a support frame for supporting, the movable unit and the washing unit are both installed on the support frame, the taking and placing assembly comprises a taking unit for clamping castings and a storage barrel for containing chemical cleaning liquid, the taking unit is fixedly installed on the movable unit, the storage barrel is arranged below the taking unit, the clamping assembly comprises a clamping support frame, a gear unit, a clamping unit and a recovery bin, the gear unit and the clamping unit for fixing the castings are all fixedly installed on the clamping support frame, the rust removing assembly comprises a rust removing unit and a power unit, and the power unit is rotatably installed on the clamping support frame, and meanwhile, the power unit is meshed with the gear unit to enable the power unit to rotate on the clamping support frame, and the derusting unit is installed on the power unit to enable the derusting unit to rotate under the driving of the power unit.

2. The metal casting rust removal and recovery device as set forth in claim 1, wherein: the mobile unit includes rack, moving gear, moving motor, removal slider and lift cylinder, rack fixed mounting is on the support frame, it is on the support frame to remove slider slidable mounting, the equal fixed mounting of moving motor and lift cylinder is on removing the slider, remove gear fixed mounting on the output shaft of moving motor, it connects to remove gear and rack toothing, the flushing unit includes suction pump and water spray frame, suction pump fixed mounting is on the support frame, water spray frame fixed mounting is on the suction pump, the centre gripping support frame sets up the below at water spray frame, be provided with a plurality of water jet on the water spray frame.

3. The metal casting rust removing and recycling device as claimed in claim 2, wherein: the part taking unit comprises a taking and placing lifting rod, a taking and placing cylinder, a connecting rod, a guide shaft, a top plate spring, a top plate cylinder, a sliding connecting block, a fixing block, a small connecting rod and a sliding block, the taking and placing lifting rod is fixedly arranged on the lifting cylinder, the taking and placing cylinder and the guide shaft are both fixedly arranged on the taking and placing lifting rod, the connecting rod is fixedly arranged on a piston rod of the taking and placing cylinder, the connecting rod is slidably connected with the taking and placing lifting rod, the sliding block is slidably arranged on the guide shaft, the fixing block is fixedly arranged on the guide shaft, the sliding connecting block is slidably arranged on the fixing block, one end of the small connecting rod is rotatably arranged on the sliding connecting block, the other end of the small connecting rod is rotatably arranged on the sliding connecting block, the top plate cylinder is fixedly arranged on the sliding connecting block, the sliding block is fixedly connected with the connecting rod.

4. A metal casting rust removing and recycling device as defined in claim 3, characterized in that: the fixed block and the sliding block are respectively provided with two blocks which are distributed up and down, the top plate spring, the top plate cylinder, the sliding connecting block and the small connecting rod are in a group, three groups are respectively arranged up and down, the upper three groups and the lower three groups are distributed in a cross mode, and chemical cleaning liquid is placed in the storage barrel.

5. The metal casting rust removing and recycling device as claimed in claim 4, wherein: the gear unit comprises a supporting circular plate, an upper gear ring and a lower gear ring, wherein the supporting circular plate and the lower gear ring are fixedly mounted on a clamping support frame, the upper gear ring is fixedly mounted on the supporting circular plate, the clamping unit comprises a clamping plate, a clamping spring, a connecting plate, a clamping cylinder and a clamping buffer cylinder, the clamping cylinder is fixedly mounted on the clamping support frame, the connecting plate is fixedly mounted on a piston rod of the clamping cylinder, the clamping buffer cylinder is fixedly mounted on the connecting plate, the clamping plate is fixedly mounted on a piston rod of the clamping buffer cylinder, one end of the clamping spring is fixedly mounted on the clamping plate, the other end of the clamping spring is fixedly mounted on the connecting plate, a wastewater recovery device is connected onto a recovery bin, and the clamping unit is provided with multiple groups.

6. The metal casting rust removing and recycling device as claimed in claim 5, wherein: the power unit comprises a belt power motor, a driving belt pulley, a belt, a driven belt pulley, a first rotating gear, a first rotating motor, a first rotating plate, a first telescopic cylinder, a first sliding plate, a second rotating plate, a second telescopic cylinder, a second sliding plate, a limiting plate, a second rotating gear and a second rotating motor, wherein the first rotating plate is rotatably arranged on the clamping support frame, the second rotating plate is rotatably arranged on the supporting circular plate, the first telescopic cylinder is fixedly arranged on the first rotating plate, the second telescopic cylinder is fixedly arranged on the second rotating plate, the first sliding plate is fixedly arranged on a piston rod of the first telescopic cylinder and is in sliding connection with the first rotating plate, the second sliding plate is fixedly arranged on a piston rod of the second telescopic cylinder and is in sliding connection with the second rotating plate, the first rotating motor is fixedly arranged on the first rotating plate, the second rotating motor is fixedly mounted on the second rotating plate, the first rotating gear is fixedly mounted on an output shaft of the first rotating motor, the second rotating gear is fixedly mounted on an output shaft of the second rotating motor, the first rotating gear is meshed with the lower gear ring, the second rotating gear is meshed with the upper gear ring, the belt power motor is fixedly mounted on the first sliding plate, the driving belt pulley is fixedly mounted on an output shaft of the belt power motor, the driven belt pulley is fixedly mounted on the derusting unit, the derusting unit is rotatably mounted on the first sliding plate, one end of the belt is connected with the driving belt pulley, the other end of the belt is connected with the driven belt pulley, and the limiting plate is fixedly mounted on the second sliding plate.

7. The metal casting rust removing and recycling device as claimed in claim 6, wherein: the rust removing unit comprises a cutter lifting cylinder, an upper cutter, a lower cutter, an upper cutter lifting cylinder and a cutter mounting plate, wherein the cutter lifting cylinder is rotatably mounted on the first sliding plate, the cutter lifting cylinder is fixedly connected with the driven belt pulley, the cutter mounting plate is fixedly mounted on a piston rod of the cutter lifting cylinder, the lower cutter and the upper cutter lifting cylinder are fixedly mounted on the cutter mounting plate, and the upper cutter is fixedly mounted on a piston rod of the upper cutter lifting cylinder and is connected with the lower cutter in a sliding manner.

Technical Field

The invention relates to the technical field of casting rust removal, in particular to a metal casting rust removal and recovery device.

Background

The metal casting can produce rust after using for a period of time, influences pleasing to the eye and use, and traditional rust cleaning mode often adopts the manual work to go to polish, and the effect is general, and its characteristics are that operational environment is abominable, and the dust is more, and factor of safety is low, and operative employee's physical stamina consumption is very big, and the efficiency of polishing is not very high yet. The rust removing device is generally used in the following ways: the shot blasting and rust removing device mainly utilizes high-speed operation of mechanical equipment to throw out steel shots with certain granularity by the centrifugal force of a throwing head, the thrown steel shots collide with a component violently to strike so as to achieve the purpose of removing the rust on the surface of steel, and the shot blasting and rust removing device utilizes high-pressure air to bring out quartz sand to be sprayed on the surface of the component for rust removal.

The patent with the application number of 201922008579.7 provides a rust removing device for surface treatment of metal castings, a frosting chamber is arranged in a shell, a first rotating rod in the frosting chamber is driven to rotate through a first motor, so that stirring blades are driven to rotate, the purpose of polishing quartz sand is achieved, a rust removing chamber is arranged below the frosting chamber, a box door is closed, the purpose of sealing a space is achieved, a pneumatic switch is started to control high-pressure gas in an air pump to enter a conveying pipe through a gas pipe, the quartz sand in the conveying pipe is driven to be sprayed to the surface of the casting needing rust removal on a workbench below through a high-pressure spray head, the purpose of rust removing is achieved, although rust removing can be carried out, only one layer of rust on the surface can be treated, the rust removing is not thorough, comprehensive rust removing can not be carried out, the rust removing is still remained after the rust removing, meanwhile, quartz stones need to be manually added, and the metal castings need to be manually placed, it is laborious and time consuming.

Disclosure of Invention

Aiming at the technical problem, the invention provides a metal casting derusting and recycling device which comprises a taking and placing assembly, a moving assembly, a clamping assembly and a derusting assembly, wherein the moving assembly is an installation platform of the taking and placing assembly, the clamping assembly is arranged below the moving assembly, the derusting assembly is arranged on the clamping assembly, the moving assembly comprises a moving unit, a washing unit and a support frame for supporting, the moving unit and the washing unit are both arranged on the support frame, the taking and placing assembly comprises a taking unit for clamping castings and a storage barrel for containing chemical cleaning liquid, the taking unit is fixedly arranged on the moving unit, the storage barrel is arranged below the taking unit, the clamping assembly comprises a clamping support frame, a gear unit, a clamping unit and a recycling bin, and the recycling bin, the gear unit and the clamping unit for fixing the castings are all fixedly arranged on the clamping support frame, the rust removal assembly comprises a rust removal unit and a power unit, the power unit is rotatably installed on the clamping support frame, meanwhile, the power unit is meshed with the gear unit to enable the power unit to rotate on the clamping support frame, and the rust removal unit is installed on the power unit to enable the rust removal unit to rotate under the driving of the power unit.

Further, the mobile unit includes rack, removal gear, moving motor, removal slider and lift cylinder, rack fixed mounting is on the support frame, it installs on the support frame to remove slider slidable mounting, the equal fixed mounting of moving motor and lift cylinder is on removing the slider, remove gear fixed mounting on the output shaft of moving motor, it connects with rack toothing to remove the gear, the washing unit includes suction pump and water spray frame, suction pump fixed mounting is on the support frame, water spray frame fixed mounting is on the suction pump, the centre gripping support frame sets up the below at water spray frame, be provided with a plurality of water jet on the water spray frame.

Further, the part taking unit comprises a taking and placing lifting rod, a taking and placing cylinder, a connecting rod, a guide shaft, a top plate spring, a top plate cylinder, a sliding connecting block, a fixing block, a small connecting rod and a sliding block, wherein the taking and placing lifting rod is fixedly arranged on the lifting cylinder, the taking and placing cylinder and the guide shaft are both fixedly arranged on the taking and placing lifting rod, the connecting rod is fixedly arranged on a piston rod of the taking and placing cylinder, the connecting rod is slidably connected with the taking and placing lifting rod, the sliding block is slidably arranged on the guide shaft, the fixing block is fixedly arranged on the guide shaft, the sliding connecting block is slidably arranged on the fixing block, one end of the small connecting rod is rotatably arranged on the sliding connecting block, the other end of the small connecting rod is rotatably arranged on the sliding connecting block, the top plate cylinder is fixedly arranged on the sliding connecting block, the top plate is fixedly arranged on a piston rod of the top plate cylinder, one end of the top plate spring is fixedly arranged on the top plate, and the other end of the top plate spring is fixedly arranged on the sliding connecting block, the sliding block is fixedly connected with the connecting rod.

Further, the fixed block and the slider are respectively provided with two and distributed up and down, the top plate spring, the top plate cylinder, the sliding connection block and the small connecting rod are in a group, three groups are respectively arranged up and down, the upper three groups and the lower three groups are in cross distribution, and chemical cleaning liquid is placed in the storage barrel.

Further, the gear unit includes supporting circular plate, last ring gear and ring gear down, the equal fixed mounting of supporting circular plate and ring gear down is on the centre gripping support frame, it is on supporting circular plate to go up ring gear fixed mounting, the centre gripping unit includes grip block, centre gripping spring, connecting plate, centre gripping cylinder and centre gripping cushion cylinder, centre gripping cylinder fixed mounting is on the centre gripping support frame, connecting plate fixed mounting is on the piston rod of centre gripping cylinder, centre gripping cushion cylinder fixed mounting is on the connecting plate, grip block fixed mounting is on centre gripping cushion cylinder's piston rod, other end fixed mounting is on the connecting plate on the grip block of centre gripping spring one end fixed mounting, be connected with waste water recovery unit on the recovery storehouse, the centre gripping unit is provided with the multiunit.

Further, the power unit comprises a belt power motor, a driving belt pulley, a belt, a driven belt pulley, a first rotating gear, a first rotating motor, a first rotating plate, a first telescopic cylinder, a first sliding plate, a second rotating plate, a second telescopic cylinder, a second sliding plate, a limiting plate, a second rotating gear and a second rotating motor, wherein the first rotating plate is rotatably installed on the clamping support frame, the second rotating plate is rotatably installed on the supporting circular plate, the first telescopic cylinder is fixedly installed on the first rotating plate, the second telescopic cylinder is fixedly installed on the second rotating plate, the first sliding plate is fixedly installed on a piston rod of the first telescopic cylinder and is slidably connected with the first rotating plate, the second sliding plate is fixedly installed on a piston rod of the second telescopic cylinder and is slidably connected with the second rotating plate, the first rotating motor is fixedly installed on the first rotating plate, the second rotating motor is fixedly mounted on the second rotating plate, the first rotating gear is fixedly mounted on an output shaft of the first rotating motor, the second rotating gear is fixedly mounted on an output shaft of the second rotating motor, the first rotating gear is meshed with the lower gear ring, the second rotating gear is meshed with the upper gear ring, the belt power motor is fixedly mounted on the first sliding plate, the driving belt pulley is fixedly mounted on an output shaft of the belt power motor, the driven belt pulley is fixedly mounted on the derusting unit, the derusting unit is rotatably mounted on the first sliding plate, one end of the belt is connected with the driving belt pulley, the other end of the belt is connected with the driven belt pulley, and the limiting plate is fixedly mounted on the second sliding plate.

Further, the rust removing unit comprises a cutter lifting cylinder, an upper cutter, a lower cutter, an upper cutter lifting cylinder and a cutter mounting plate, wherein the cutter lifting cylinder is rotatably mounted on the first sliding plate and is fixedly connected with the driven belt pulley, the cutter mounting plate is fixedly mounted on a piston rod of the cutter lifting cylinder, the lower cutter and the upper cutter lifting cylinder are fixedly mounted on the cutter mounting plate, and the upper cutter is fixedly mounted on the piston rod of the upper cutter lifting cylinder and is slidably connected with the lower cutter.

Compared with the prior art, the invention has the beneficial effects that: the picking and placing assembly and the moving assembly can pick, place and move the metal casting fully automatically, and the problem that the casting is damaged by the accident operation of people is solved; the clamping assembly can fix the metal casting, so that the inner wall of the metal casting can be conveniently derusted; the rust removal assembly can remove rust on the inner surface and the outer surface of a metal casting, and the cutter revolves when rotating, so that the rust removal is more thorough and comprehensive; the invention separates chemical treatment and mechanical polishing during rust removal, avoids corrosion to the cutter and prolongs the service life of the cutter.

Drawings

Fig. 1 and 2 are overall schematic views of the present invention.

Fig. 3-9 are partial schematic views of the present invention.

Detailed Description

The present invention will be further described with reference to specific examples, which are illustrative of the invention and are not to be construed as limiting the invention.

Example (b): as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, a derusting and recycling device for metal castings comprises a taking and placing assembly 1, a moving assembly 2, a clamping assembly 3, and a derusting assembly 4, wherein the moving assembly 2 is a mounting platform of the taking and placing assembly 1, the clamping assembly 3 is arranged below the moving assembly 2, the derusting assembly 4 is mounted on the clamping assembly 3, the moving assembly 2 comprises a moving unit, a flushing unit and a supporting frame 201 for supporting, both the moving unit and the flushing unit are mounted on the supporting frame 201, the taking and placing assembly 1 comprises a taking unit for taking castings and a storage barrel 101 for containing chemical cleaning liquid, the taking unit is fixedly mounted on the moving unit, the storage barrel 101 is arranged below the taking unit, the clamping assembly 3 comprises a clamping supporting frame 301, a gear unit, a clamping unit and a recycling bin 309, recovery bin 309, gear unit and the centre gripping unit that is used for fixed foundry goods all fixed mounting on centre gripping support frame 301, rust cleaning subassembly 4 includes rust cleaning unit and power unit, and the power unit rotates to be installed on centre gripping support frame 301, and power unit and gear unit meshing are connected simultaneously to make the power unit rotate on centre gripping support frame 301, and the rust cleaning unit is installed on the power unit, so that the rust cleaning unit rotates under the drive of power unit.

As shown in fig. 1, 3 and 5, the moving unit includes a rack 204, a moving gear 205, a moving motor 206, a moving slider 207 and a lifting cylinder 208, the rack 204 is fixedly mounted on the supporting frame 201, the moving slider 207 is slidably mounted on the supporting frame 201, both the moving motor 206 and the lifting cylinder 208 are fixedly mounted on the moving slider 207, the moving gear 205 is fixedly mounted on an output shaft of the moving motor 206, the moving gear 205 is engaged with the rack 204, the flushing unit includes a water suction pump 202 and a water spray frame 203, the water suction pump 202 is fixedly mounted on the supporting frame 201, the water spray frame 203 is fixedly mounted on the water suction pump 202, a plurality of water spray nozzles are arranged on the water spray frame 203, and the clamping supporting frame 301 is arranged below the water spray frame 203.

As shown in fig. 2, 3 and 4, the picking unit includes a picking lift rod 102, a picking cylinder 103, a connecting rod 104, a guide shaft 105, a top plate 106, a top plate spring 107, a top plate cylinder 108, a sliding connection block 109, a fixed block 110, a small connecting rod 111 and a slider 112, the picking lift rod 102 is fixedly installed on a lift cylinder 208, the picking cylinder 103 and the guide shaft 105 are both fixedly installed on the picking lift rod 102, the connecting rod 104 is fixedly installed on a piston rod of the picking cylinder 103, the connecting rod 104 is slidably connected with the picking lift rod 102, the slider 112 is slidably installed on the guide shaft 105, the fixed block 110 is fixedly installed on the guide shaft 105, the sliding connection block 109 is slidably installed on the fixed block 110, one end of the small connecting rod 111 is rotatably installed on the sliding connection block 109, the other end is rotatably installed on the slider 112, the top plate cylinder 108 is fixedly installed on the sliding connection block 109, the top plate 106 is fixedly installed on the piston rod of the top plate 108, one end of a top plate spring 107 is fixedly installed on a top plate 106, the other end of the top plate spring 107 is fixedly installed on a sliding connection block 109, a sliding block 112 is fixedly connected with a connecting rod 104, two fixing blocks 110 and two sliding blocks 112 are arranged and distributed up and down, the top plate 106, the top plate spring 107, a top plate cylinder 108, the sliding connection block 109 and a small connecting rod 111 are in a group, three groups are arranged up and down respectively, the upper three groups and the lower three groups are distributed in a cross mode, and chemical cleaning liquid is placed in a. The metal casting to be derusted is put into the storage barrel 101 for cleaning, after cleaning is completed, the lifting cylinder 208 is started, the lifting cylinder 208 drives the picking mechanism to descend into the metal casting, the picking cylinder 103 is started, the picking cylinder 103 drives the connecting rod 104 to descend, the connecting rod 104 drives the sliding block 112 to slide downwards on the guide shaft 105, the sliding block 112 drives the sliding connecting block 109 to slide through the small connecting rod 111, the sliding connecting block 109 drives the top plate cylinder 108 to move, the top plate cylinder 108 drives the top plate 106 to move, the top plate cylinder 108 is started simultaneously, the top plate cylinder 108 drives the top plate 106 to move, so that the top plate 106 abuts against the inner wall of the metal casting, then the lifting cylinder 208 drives the picking mechanism to ascend, the moving motor 206 is started, the output shaft of the moving motor 206 drives the moving gear 205 to rotate, so that the moving gear 205 rotates on the rack 204, the moving gear 205 drives the moving slider 207 to slide on the support frame 201 through the moving motor 206, the moving slide block 207 drives the pickup unit to move through the lifting cylinder 208, and the pickup unit drives the metal casting to move.

As shown in fig. 6, 7 and 8, the gear unit includes a supporting circular plate 302, an upper gear ring 303 and a lower gear ring 308, the supporting circular plate 302 and the lower gear ring 308 are both fixedly mounted on the clamping support frame 301, the upper gear ring 303 is fixedly mounted on the supporting circular plate 302, the clamping unit includes a clamping plate 304, a clamping spring 305, a connecting plate 306, a clamping cylinder 307 and a clamping buffer cylinder 310, the clamping cylinder 307 is fixedly mounted on the clamping support frame 301, the connecting plate 306 is fixedly mounted on a piston rod of the clamping cylinder 307, the clamping buffer cylinder 310 is fixedly mounted on the connecting plate 306, the clamping plate 304 is fixedly mounted on a piston rod of the clamping buffer cylinder 310, one end of the clamping spring 305 is fixedly mounted on the clamping plate 304, and the other end is fixedly mounted on the connecting plate 306, the recycling bin 309 is connected with a wastewater recycling device, and the clamping unit is provided with multiple groups. When the piece taking unit drives the metal casting to move into the water spraying frame 203, the water suction pump 202 is started, water pumped by the water suction pump 202 is sprayed out of a water spraying port on the water spraying frame 203, so that chemical cleaning liquid remaining on the metal casting is washed, and waste liquid after washing flows out of the recovery bin 309 to be recovered.

As shown in fig. 9, the power unit includes a belt power motor 401, a driving pulley 402, a belt 403, a driven pulley 405, a first rotating gear 406, a first rotating motor 407, a first rotating plate 408, a first telescopic cylinder 409, a first sliding plate 410, a second rotating plate 411, a second telescopic cylinder 412, a second sliding plate 413, a limiting plate 414, a second rotating gear 418 and a second rotating motor 419, the first rotating plate 408 is rotatably mounted on the holding support frame 301, the second rotating plate 411 is rotatably mounted on the supporting circular plate 302, the first telescopic cylinder 409 is fixedly mounted on the first rotating plate 408, the second telescopic cylinder 412 is fixedly mounted on the second rotating plate 411, the first sliding plate 410 is fixedly mounted on a piston rod of the first telescopic cylinder 409 while the first sliding plate 410 is slidably connected with the first rotating plate 408, the second sliding plate 413 is fixedly mounted on a piston rod of the second telescopic cylinder 412 while the second sliding plate 413 is slidably connected with the second rotating plate 411, the first rotating motor 407 is fixedly mounted on the first rotating plate 408, the second rotating motor 419 is fixedly mounted on the second rotating plate 411, the first rotating gear 406 is fixedly mounted on an output shaft of the first rotating motor 407, the second rotating gear 418 is fixedly mounted on an output shaft of the second rotating motor 419, the first rotating gear 406 is in meshed connection with the lower gear ring 308, the second rotating gear 418 is in meshed connection with the upper gear ring 303, the belt power motor 401 is fixedly mounted on the first sliding plate 410, the driving pulley 402 is fixedly mounted on an output shaft of the belt power motor 401, the driven pulley 405 is fixedly mounted on the derusting unit, the derusting unit is rotatably mounted on the first sliding plate 410, one end of the belt 403 is connected with the driving pulley 402, the other end of the belt 403 is connected with the driven pulley 405, the limiting plate 414 is fixedly mounted on the second sliding plate 413, and grooves are formed in the first rotating plate 408 and the second rotating plate 411.

The rust removing unit comprises a cutter lifting cylinder 404, an upper cutter 415, a lower cutter 416, an upper cutter lifting cylinder 417 and a cutter mounting plate 420, wherein the cutter lifting cylinder 404 is rotatably mounted on a first sliding plate 410, the cutter lifting cylinder 404 is fixedly connected with a driven pulley 405, the cutter mounting plate 420 is fixedly mounted on a piston rod of the cutter lifting cylinder 404, the lower cutter 416 and the upper cutter lifting cylinder 417 are fixedly mounted on the cutter mounting plate 420, and the upper cutter 415 is fixedly mounted on a piston rod of the upper cutter lifting cylinder 417 while the upper cutter 415 and the lower cutter 416 are slidably connected. After the washing is finished, the lifting cylinder 208 drives the metal casting to move downwards through the workpiece taking unit, when the metal casting moves to the position of the rust removing unit, the first telescopic cylinder 409 and the second telescopic cylinder 412 are started, the first telescopic cylinder 409 pushes the first sliding plate 410 to move, the second telescopic cylinder 412 pushes the second sliding plate 413 to move, the first sliding plate 410 drives the rust removing unit to be attached to the outer surface of the metal casting, the belt power motor 401 is started, the output shaft of the belt power motor 401 drives the driving pulley 402 to rotate, the driving pulley 402 drives the driven pulley 405 to rotate through the belt 403, the driven pulley 405 drives the cutter lifting cylinder 404 to rotate, the cutter lifting cylinder 404 drives the cutter mounting plate 420 to rotate, the upper cutter lifting cylinder 417 is started, the upper cutter lifting cylinder 417 drives the upper cutter 415 to be lifted to be attached to the limiting plate 414, and the cutter mounting plate 420 drives the upper cutter 415 and the lower cutter 416 to rotate, the upper cutter 415 and the lower cutter 416 remove rust on the outer surface of the metal casting, the rotating motor I407 and the rotating motor II 419 are started, the output shaft of the rotating motor I407 drives the rotating gear I406 to rotate, the output shaft of the rotating motor II 419 drives the rotating gear II 418 to rotate, the rotating gear I406 rotates on the lower gear ring 308, the rotating gear II 418 rotates on the upper gear ring 303, the rotating gear I406 further drives the rotating plate I408 to rotate on the clamping support frame 301 through the rotating motor I407, the rotating gear II 418 drives the rotating plate II 411 to rotate on the support circular plate 302 through the rotating motor II 419, the rotating plate II 411 drives the limiting plate 414 to rotate through the sliding plate II 413, the rotating plate I408 drives the cutter lifting cylinder 404 to rotate through the sliding plate I410, and the cutter lifting cylinder 404 drives the upper cutter 415 and the lower cutter 416 to rotate around the outer surface of the metal casting through the cutter mounting plate 420, so as to remove rust on the outer surface of the metal casting, the water suction pump 202 is started, the water suction pump 202 pumps water and sprays out from the water spray ports on the water spray frame 203, so as to wash the metal casting, and the waste liquid after washing flows out from the recovery bin 309 to be recovered.

After the rust removal of the outer surface of the metal casting is finished, the clamping cylinder 307 is started, the clamping cylinder 307 drives the connecting plate 306 to move, the connecting plate 306 drives the clamping plate 304 to move through the clamping buffer cylinder 310, the clamping buffer cylinder 310 is started, the clamping buffer cylinder 310 drives the clamping plate 304 to continue to move, and further enables the clamping plate 304 to clamp the metal casting, when the clamping plate 304 clamps the metal casting, the pick-and-place cylinder 103 is started, the pick-and-place cylinder 103 drives the connecting rod 104 to ascend, the connecting rod 104 drives the sliding block 112 to slide upwards on the guide shaft 105, the sliding block 112 drives the sliding connecting block 109 to slide through the small connecting rod 111, the sliding connecting block 109 drives the top plate cylinder 108 to move in the reverse direction, the top plate cylinder 108 drives the top plate 106 to move in the reverse direction, and simultaneously the top plate cylinder 108 drives the top plate 106 to move in the reverse direction, so that the top plate 106 loosens the inner wall of the metal casting, the lifting cylinder 208 is started, and the lifting cylinder 208 drives the piece taking mechanism to move, therefore, the workpiece taking mechanism is far away from a metal casting, the cutter lifting cylinder 404 is started, the cutter lifting cylinder 404 drives the lower cutter 416 to descend through the cutter mounting plate 420, the upper cutter lifting cylinder 417 is started, the upper cutter lifting cylinder 417 drives the upper cutter 415 to descend, the first telescopic cylinder 409 and the second telescopic cylinder 412 are started, the second telescopic cylinder 412 drives the limiting plate 414 to move through the second sliding plate 413, the first telescopic cylinder 409 drives the cutter lifting cylinder 404 to move through the first sliding plate 410, and the cutter lifting cylinder 404 drives the upper cutter 415 and the lower cutter 416 to move through the cutter mounting plate 420.

When the upper cutter 415 and the lower cutter 416 move to the lower part of the inner wall of the metal casting, the cutter lifting cylinder 404 is started, the cutter lifting cylinder 404 drives the lower cutter 416 to ascend through the cutter mounting plate 420, the upper cutter lifting cylinder 417 is started, the upper cutter lifting cylinder 417 drives the upper cutter 415 to ascend, then the telescopic cylinder I409 and the telescopic cylinder II 412 are started, the telescopic cylinder I409 drives the cutter lifting cylinder 404 to reversely move through the sliding plate I410, the telescopic cylinder II 412 drives the limiting plate 414 to reversely move through the sliding plate II 413, so that the upper cutter 415 and the lower cutter 416 are tightly attached to the inner wall of the metal casting, the belt power motor 401 is started, the output shaft of the belt power motor 401 drives the driving pulley 402 to rotate, the driving pulley 402 drives the driven pulley 405 to rotate through a belt, the driven pulley 405 drives the cutter lifting cylinder 404 to rotate, the cutter lifting cylinder 404 drives the cutter mounting plate 420 to rotate, the cutter mounting plate 420 drives the upper cutter 415 and the lower cutter 416 to rotate, the upper cutter 415 and the lower cutter 416 remove rust on the inner wall of the metal casting, the rotating motor I407 and the rotating motor II 419 are started, the output shaft of the rotating motor I407 drives the rotating gear I406 to rotate, the output shaft of the rotating motor II 419 drives the rotating gear II 418 to rotate, the rotating gear I406 rotates on the lower gear ring 308, the rotating gear II 418 rotates on the upper gear ring 303, the rotating gear I406 further drives the rotating plate I408 to rotate on the clamping support frame 301 through the rotating motor I407, the rotating gear II 418 drives the rotating plate II 411 to rotate on the supporting circular plate 302 through the rotating motor II 419, the rotating plate II 411 drives the limiting plate 414 to rotate through the sliding plate II 413, the rotating plate I408 drives the cutter lifting cylinder 404 to rotate through the sliding plate I410, and the cutter lifting cylinder 404 drives the upper cutter 415 and the lower cutter 416 to rotate around the inner wall of the metal casting through the cutter mounting plate 420, so as to remove rust on the inner wall of the metal casting, and simultaneously, the water suction pump 202 is started, the water suction pump 202 pumps water and sprays out from the water spray opening on the water spray frame 203, so as to wash the metal casting, and the waste liquid after washing flows out from the recovery bin 309 for recovery.