Polishing device for aluminum alloy die casting

Abstract

The invention relates to the technical field of polishing devices, in particular to an aluminum alloy die casting polishing device which comprises a machining table, a lifting air cylinder is installed on the machining table through a supporting frame, a polishing mechanism is fixedly installed on an output shaft of the lifting air cylinder, and a circular containing disc is rotatably installed on the machining table through a rotating assembly. A plurality of clamping assemblies used for clamping die castings are arranged on the circular containing disc, and each clamping assembly comprises two L-shaped frames, two control air cylinders and two clamping blocks, wherein the two control air cylinders are fixedly installed on the two L-shaped frames correspondingly, and the two clamping blocks are fixedly installed on output shafts of the two control air cylinders correspondingly. According to the die casting polishing device, the multiple sets of clamping assemblies are arranged on the circular containing disc, so that in the die casting polishing process, other die castings can be fixed to the other clamping assemblies, the die castings can be fed while being polished, and the polishing efficiency of the die castings is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of grinding devices, and in particular to a grinding device for aluminum alloy die castings. Background Art

[0002] Aluminum alloy die castings refer to equipment components made of pure aluminum or aluminum alloy by casting. Generally, a sand mold or a metal mold is used to pour the heated liquid aluminum or aluminum alloy into the mold cavity, and the obtained aluminum parts or aluminum alloy parts of various shapes and sizes are usually called aluminum die castings. In the production and manufacturing process of aluminum alloy die castings, burrs are inevitable on die castings, so deburring equipment is needed to deburr and grind them.

[0003] Chinese patent publication number CN213289695U discloses a deburring device for aluminum alloy die castings, which fixes die castings of different sizes through fixing plates and elastic columns to prevent the die castings from moving during the deburring and grinding process, which would affect the grinding effect and efficiency of the device.

[0004] In the above patent document, only one die-casting can be fixed on the device, so when grinding, the die-casting needs to be fixed on the device, then ground, and finally removed from the device. When fixing the next die-casting, it is necessary to wait until the previous die-casting is finished grinding before fixing it. The processing process wastes time and reduces the efficiency of die-casting grinding. Summary of the invention

[0005] The purpose of the present invention is to solve the following shortcomings in the prior art: when fixing the next die casting, it is necessary to wait until the previous die casting is polished before fixing it, which wastes time and reduces the polishing efficiency of the die casting, and a polishing device for aluminum alloy die casting is proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A grinding device for aluminum alloy die castings, comprising a processing table, a support frame is fixedly mounted on the processing table, a lifting cylinder is fixedly mounted on the support frame, and a grinding mechanism is fixedly mounted on the output shaft of the lifting cylinder; A circular placement plate is rotatably mounted on the processing table through a rotating assembly, and a plurality of clamping assemblies for clamping the die casting are arranged on the circular placement plate; The clamping assembly includes two L-shaped frames fixedly mounted on a circular placement plate, two control cylinders respectively fixedly mounted on the two L-shaped frames, and two clamping blocks respectively fixedly mounted on the output shafts of the two control cylinders. The L-shaped frames are symmetrically provided with movable holes, and the output shafts of the control cylinders are slidably inserted into the movable holes.

[0007] As a preferred solution, a mounting groove is provided on the processing table, and the rotating assembly includes a driving motor fixedly installed in the mounting groove, a rectangular spring rod fixedly installed on the output shaft of the driving motor, a hexagonal block fixedly installed on the upper end of the rectangular spring rod, and a connecting column fixedly installed on the lower surface of the circular placement plate, wherein a hexagonal groove is provided on the lower surface of the connecting column, and a first transmission assembly for driving the hexagonal block to move vertically downward is provided on the processing table.

[0008] As a preferred solution, an L-shaped hole connected to the mounting groove is provided on the upper surface of the processing table, and the first transmission assembly includes an L-shaped slide rod slidably installed in the L-shaped hole, a support rod rotatably installed at one end of the L-shaped slide rod, a rotating ring rotatably installed on the lower surface of the hexagonal block, and a movable component for driving the L-shaped slide rod to move horizontally, and the end of the support rod away from the L-shaped slide rod is rotatably connected to the rotating ring.

[0009] As a preferred solution, a movable groove is provided at the upper end of the L-shaped sliding rod, and the movable component includes a rectangular rod slidably installed in the movable groove through a limiting part, a metal shaft vertically fixedly installed at the upper end of the rectangular rod, a roller rotatably sleeved on the metal shaft, and a plurality of triangular blocks fixedly installed on the side of a circular placing plate, and the plurality of triangular blocks are arranged in a circle on the circular placing plate, and the lifting cylinder is provided with a pulling component for driving the rectangular rod to move vertically upward.

[0010] As a preferred solution, a strip-shaped limiting hole connected to the moving groove is provided on the L-shaped sliding rod, and the limiting part includes a limiting rod fixedly mounted on the rectangular rod, and one end of the limiting rod passes through the strip-shaped limiting hole.

[0011] As a preferred solution, the lifting assembly includes an L-shaped mounting rod fixedly mounted on the output shaft of the lifting cylinder, a buffer spring rod fixedly mounted at the lower end of the mounting rod, and a magnet fixedly mounted at the lower end of the buffer spring rod, and the metal shaft is located directly below the magnet.

[0012] As a preferred solution, a plurality of positioning holes are provided on the circular placement plate, and the plurality of positioning holes are arranged in a circle on the circular placement plate. A fixing block is fixedly mounted on the mounting rod, and a positioning rod is vertically fixedly mounted on the lower end of the fixing block.

[0013] As a preferred solution, a plurality of rectangular grooves are provided on the circular placing plate, a plurality of slide grooves are provided on the circular placing plate, which are respectively connected with the plurality of rectangular grooves, the plurality of rectangular grooves are arranged in a circle on the circular placing plate, a support plate is rotatably installed in each of the plurality of rectangular grooves, the support plate is located between two clamping blocks, a slider is slidably installed in each of the plurality of slide grooves through a telescopic spring, a support rod is rotatably installed on the slider, an end of the support rod away from the slider is rotatably connected to one end of the support plate, a blanking plate is fixedly installed on the side of the processing table, and a second transmission assembly for driving the slider to move in the direction of the support plate is provided on the processing table.

[0014] As a preferred solution, the second transmission assembly includes a vertical rod vertically fixedly installed above the circular placement plate through a bracket, an L-shaped connecting block fixedly installed on the slider, and an arc-shaped guide block fixedly installed on the connecting block, and the vertical rod is located on the movement path of the arc-shaped guide block.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. Multiple sets of clamping components are arranged on the circular placement plate, so that other die-castings can be fixed on other clamping components during the die-casting grinding process, and then the circular placement plate is driven to rotate by the rotating component to move the die-casting to be ground directly under the grinding mechanism to achieve grinding. The die-casting can be fed while grinding the die-casting, thereby effectively improving the grinding efficiency of the die-casting; 2. When the circular placement plate drives the die casting to move to the bottom of the grinding mechanism, the first transmission component will drive the hexagonal block to separate from the hexagonal slot, so that the circular placement plate stops rotating. When the processing is completed, the hexagonal block can be inserted into the hexagonal slot again to drive the circular placement plate to rotate. The structure is compact, and there is no need for operators to control the rotation of the circular placement plate, and the degree of automation is high. 3. After the die-casting is polished, the die-casting can be automatically unloaded through the cooperation of the support plate, slider, support rod, telescopic spring and the second transmission assembly. There is no need for operators to unload manually, which is convenient to operate and reduces the labor intensity of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a right-side perspective structural schematic diagram of a grinding device for aluminum alloy die castings proposed by the present invention; Figure 2 It is a left-side stereoscopic structural schematic diagram of a grinding device for aluminum alloy die castings proposed by the present invention; Figure 3 A schematic diagram of a three-dimensional partial cross-sectional structure of a grinding device for aluminum alloy die castings proposed by the present invention; Figure 4It is a schematic diagram of a three-dimensional partial cross-sectional structure of a pulling component in a grinding device for aluminum alloy die castings proposed by the present invention; Figure 5 It is a three-dimensional structural schematic diagram of a second transmission assembly, a supporting plate and a blanking plate in a grinding device for aluminum alloy die castings proposed by the present invention; Figure 6 for Figure 1 The enlarged structural diagram at A in the middle; Figure 7 for Figure 3 The enlarged structural diagram at B in the middle; Figure 8 for Figure 5 Enlarged structural diagram at point C in the middle.

[0017] In the figure: 1 processing table, 2 support frame, 3 lifting cylinder, 4 grinding mechanism, 5 circular placement plate, 6 L-shaped frame, 7 control cylinder, 8 clamping block, 9 driving motor, 10 rectangular spring rod, 11 hexagonal block, 12 connecting column, 13 hexagonal groove, 14 L-shaped sliding rod, 15 supporting rod, 16 rotating ring, 17 rectangular rod, 18 metal shaft, 19 roller, 20 triangular block, 21 limiting rod, 22 mounting rod, 23 buffer spring rod, 24 magnet, 25 fixing block, 26 positioning rod, 27 positioning hole, 28 support plate, 29 telescopic spring, 30 sliding block, 31 supporting rod, 32 blanking plate, 33 bracket, 34 vertical rod, 35 connecting block, 36 arc guide block. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] Reference Figure 1-Figure 8 A grinding device for aluminum alloy die castings, comprising a processing table 1, a support frame 2 is fixedly mounted on the processing table 1, a lifting cylinder 3 is fixedly mounted on the support frame 2, a grinding mechanism 4 is fixedly mounted on the output shaft of the lifting cylinder 3 (the grinding mechanism 4 is a prior art and will not be described in detail herein), when the grinding mechanism 4 contacts the die casting, the upper surface of the die casting can be ground; A circular placement plate 5 is rotatably mounted on the processing table 1 through a rotating assembly, and a plurality of clamping assemblies for clamping the die casting are arranged on the circular placement plate 5. A mounting groove is provided on the processing table 1, and the rotating assembly includes a driving motor 9 fixedly mounted in the mounting groove, a rectangular spring rod 10 fixedly mounted on the output shaft of the driving motor 9, a hexagonal block 11 fixedly mounted on the upper end of the rectangular spring rod 10, and a connecting column 12 fixedly mounted on the lower surface of the circular placement plate 5, and a hexagonal groove 13 is provided on the lower surface of the connecting column 12. A first transmission assembly for driving the hexagonal block 11 to move vertically downward is provided on the processing table 1; Under the action of the elastic force of the rectangular spring rod 10, the hexagonal block 11 tends to move vertically upward. When the hexagonal block 11 contacts the connecting column 12, one end of the hexagonal block 11 will be inserted into the hexagonal groove 13, so that when the output shaft of the driving motor 9 rotates, the circular placement plate 5 will be driven to rotate through the hexagonal block 11 and the connecting column 12.

[0020] The clamping assembly includes two L-shaped frames 6 fixedly mounted on the circular placement plate, two control cylinders 7 respectively fixedly mounted on the two L-shaped frames 6, and two clamping blocks 8 respectively fixedly mounted on the output shafts of the two control cylinders 7. The L-shaped frames 6 are symmetrically provided with moving holes, and the output shafts of the control cylinders 7 are slidably inserted into the moving holes (the control cylinders 7 are prior art, and the start-up is mainly controlled by the PLC control board, which will not be described in detail here); When the die-casting is placed between the two clamping blocks 8, the control cylinder 7 will automatically start, thereby driving the two clamping blocks 8 to approach each other, thereby clamping and fixing the die-casting.

[0021] An L-shaped hole connected to the mounting groove is provided on the upper surface of the processing table 1. The first transmission assembly includes an L-shaped slide bar 14 slidably mounted in the L-shaped hole, a support rod 15 rotatably mounted at one end of the L-shaped slide bar 14, a rotating ring 16 rotatably mounted on the lower surface of the hexagonal block 11, and a moving part for driving the L-shaped slide bar 14 to move horizontally. One end of the support rod 15 away from the L-shaped slide bar 14 is rotatably connected to the rotating ring 16. When the hexagonal block 11 rotates together with the output shaft of the driving motor 9, the rotating ring 16 will rotate relative to the hexagonal block 11 on its lower surface, and the L-shaped slide bar 14 can move horizontally in the L-shaped hole. When the L-shaped slide bar 14 moves away from the support rod 15, the other end of the support rod 15 will pull the rotating ring 16 to move vertically downward, thereby moving the hexagonal block 11 out of the hexagonal groove 13. At this time, the driving motor 9 will not drive the circular placement plate 5 to rotate. At the same time, there is friction between the circular placement plate 5 and the processing table 1 in sliding contact, and the friction is relatively large. When the circular placement plate 5 loses the power of the driving motor 9, the circular placement plate 5 will stop rotating immediately under the action of the friction.

[0022] A moving groove is provided at the upper end of the L-shaped slide bar 14, and the moving parts include a rectangular rod 17 slidably installed in the moving groove through a limiting part, a metal shaft 18 vertically fixedly installed at the upper end of the rectangular rod 17, a roller 19 rotatably sleeved on the metal shaft 18, and a plurality of triangular blocks 20 fixedly installed on the side of the circular placement plate 5, and the plurality of triangular blocks 20 are arranged in a circle on the circular placement plate 5, and a lifting component for driving the rectangular rod 17 to move vertically upward is provided on the lifting cylinder 3; The inclined surface of the triangular block 20 faces the rotation direction of the circular placement plate 5. When the die-casting moves to the bottom of the grinding mechanism 4, the roller 19 rolls on the triangular block 20, thereby driving the L-shaped slide bar 14 to move away from the support rod 15 along the inclined surface of the triangular block 20. When the roller 19 is separated from the triangular block 20, the upper surface of the hexagonal block 11 is driven to contact the lower surface of the connecting column 12 under the action of the elastic force of the rectangular spring rod 10 until the hexagonal block 11 is aligned with the hexagonal groove 13, and the hexagonal block 11 is inserted into the hexagonal groove 13. In the process of vertically moving upward, the hexagonal block 11 drives the L-shaped slide bar 14 to move toward the support rod 15 through the support rod 15.

[0023] The L-shaped sliding rod 14 is provided with a strip-shaped limiting hole connected to the moving groove. The limiting part includes a limiting rod 21 fixedly mounted on the rectangular rod 17. One end of the limiting rod 21 passes through the strip-shaped limiting hole. The rectangular rod 17 is vertically inserted into the moving groove. Under the action of its own gravity, the limiting rod 21 moves to the lowermost end of the strip-shaped limiting hole. When the rectangular rod 17 moves vertically upward, it will drive the limiting rod 21 to move vertically upward.

[0024] The lifting assembly includes an L-shaped mounting rod 22 fixedly mounted on the output shaft of the lifting cylinder 3, a buffer spring rod 23 fixedly mounted at the lower end of the mounting rod 22, and a magnet 24 fixedly mounted at the lower end of the buffer spring rod 23. The metal shaft 18 is located directly below the magnet 24. The magnetic force between the magnet 24 and the metal shaft 18 is greater than the total gravity of the rectangular rod 17, the metal shaft 18 and the roller 19. During grinding, the magnet 24 will contact the upper end of the metal shaft 18 and be adsorbed together. After grinding, the magnet 24 moves vertically, and will drive the rectangular rod 17, the metal shaft 18 and the roller 19 to move vertically upward together through magnetic force, thereby driving the roller 19 to separate from the triangular block 20.

[0025] A plurality of positioning holes 27 are provided on the circular placement plate 5, and the plurality of positioning holes 27 are arranged in a circle on the circular placement plate 5. A fixing block 25 is fixedly installed on the mounting rod 22, and a positioning rod 26 is vertically fixedly installed at the lower end of the fixing block 25. During the grinding process, one end of the positioning rod 26 will be inserted into the positioning hole 27 to prevent the circular placement plate 5 from rotating due to excessive force between the grinding mechanism 4 and the die-casting, so that the die-casting is more stable during the grinding process.

[0026] A plurality of rectangular grooves are provided on the circular placement disk 5, and a plurality of slide grooves are provided on the circular placement disk 5, which are respectively connected with the plurality of rectangular grooves. The plurality of rectangular grooves are arranged in a circle on the circular placement disk 5, and a support plate 28 is rotatably installed in each of the plurality of rectangular grooves, and the support plate 28 is located between two clamping blocks 8. Slide blocks 30 are slidably installed in each of the plurality of slide grooves through telescopic springs 29, and a support rod 31 is rotatably installed on the slide block 30, and one end of the support rod 31 away from the slide block 30 is rotatably connected with one end of the support plate 28, and a blanking plate 32 is fixedly installed on the side of the processing table 1, and a second transmission assembly for driving the slide block 30 to move toward the direction of the support plate 28 is provided on the processing table 1, and the second transmission assembly includes a vertical rod 34 vertically fixedly installed above the circular placement disk 5 through a bracket 33, an L-shaped connecting block 35 fixedly installed on the slide block 30, and an arc-shaped guide block 36 fixedly installed on the connecting block 35, and the vertical rod 34 is located on the action path of the arc-shaped guide block 36; When the die-casting is placed between the two clamping blocks 8, the support plate 28 is horizontally located in the rectangular groove. When the slider 30 moves toward the support plate 28, the support plate 28 can be driven by the support rod 31 to rotate with one end as a fulcrum, so that the support plate 28 will be in an inclined state, and the die-casting will rotate with the support plate 28 until the gravity component of the die-casting along the support plate 28 is greater than the friction force, and the die-casting will slide along the support plate 28 to the unloading plate 32 to realize automatic unloading.

[0027] In the present invention, the die casting to be polished is fixed on the clamping assembly, and then the driving motor 9 is started, and the output shaft of the driving motor 9 drives the circular placement plate 5 to rotate. When the die casting is about to move to the bottom of the polishing mechanism 4, the triangular block 20 fixedly mounted on the circular placement plate 5 contacts the roller 19. Under the action of the inclined surface of the triangular block 20, the L-shaped slide bar 14 is driven by the roller 19 to move horizontally in the L-shaped hole. During the movement of the L-shaped slide bar 14, the hexagonal block 11 is driven to move vertically downward through the support rod 15 and the rotating ring 16, so that the hexagonal block 11 is separated from the connecting column 12. At this time, the driving motor 9 is driven to rotate the circular placement plate 5. The power of the motor 9 will not be transmitted to the circular placement plate 5. Under the friction between the circular placement plate 5 and the processing table 1, the circular placement plate 5 stops rotating. At this time, the die-casting in the clamping assembly just moves to the bottom of the grinding mechanism 4, and then the lifting cylinder 3 drives the grinding mechanism 4 to contact the die-casting to achieve grinding. During the grinding process of the die-casting by the grinding mechanism 4, the operator can install other die-castings on other clamping assemblies on the circular placement plate 5, and can realize feeding of the die-casting while grinding the die-casting, thereby effectively improving the grinding efficiency of the die-casting. When the lifting cylinder 3 drives the grinding mechanism 4 to contact the die casting, the output shaft of the lifting cylinder 3 drives the buffer spring rod 23 and the magnet 24 to move vertically downward through the mounting rod 22 until the magnet 24 contacts the upper end of the metal shaft 18. When the grinding mechanism 4 continues to move vertically downward, the buffer spring rod 23 is compressed. After the grinding is completed, the lifting cylinder 3 will drive the mounting rod 22 and the grinding mechanism 4 to move upward together. At this time, under the action of the magnetic force between the magnet 24 and the metal shaft 18, the roller 19, the metal shaft 18 and the rectangular rod 17 will be driven to move vertically upward, and the roller 19 will separate from the triangular block 20. At the same time, the limiting rod 21 will move vertically upward in the strip limiting hole. When the limiting rod 21 moves to the uppermost end of the strip limiting hole, the metal shaft 18 will stop moving. When the magnet 24 continues to move upward, the magnet 24 and the metal shaft 18 will separate. At this time, the rectangular rod 17 will move vertically downward in the moving groove under the action of its own gravity. In the process of the rectangular rod 17 moving downward, under the action of the elastic force of the rectangular spring rod 10, the hexagonal block 11 contacts the lower end of the connecting column 12 and is inserted into the hexagonal groove 13. At the same time, the L-shaped sliding rod 14 is driven to move toward the direction of the supporting rod 15 through the supporting rod 15, thereby driving the circular placement plate 5 to rotate again. There is no need for an operator to control the rotation of the circular placement plate 5, and the degree of automation is high. When the die-casting is polished, the circular placement plate 5 continues to drive the die-casting to rotate. During the rotation, the arc-shaped guide block 36 installed on the slider 30 will contact the vertical rod 34. Under the action of the arc surface of the arc-shaped guide block 36, the slider 30 will be driven to move toward the support plate 28, thereby supporting the support plate 28 through the support rod 31. When the support plate 28 is supported, the die-casting will rotate together with the support plate 28 until it slides onto the unloading plate 32, realizing automatic unloading. There is no need for the operator to manually unload the material, which is easy to operate and reduces the labor intensity of the workers.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A grinding device for aluminum alloy die castings, comprising a processing table (1), characterized in that: A support frame (2) is fixedly mounted on the processing table (1), a lifting cylinder (3) is fixedly mounted on the support frame (2), and a grinding mechanism (4) is fixedly mounted on the output shaft of the lifting cylinder (3); A circular placement plate (5) is rotatably mounted on the processing table (1) via a rotating assembly, and a plurality of groups of clamping assemblies for clamping the die casting are provided on the circular placement plate (5); The clamping assembly comprises two L-shaped frames (6) fixedly mounted on the circular placement plate (5), two control cylinders (7) respectively fixedly mounted on the two L-shaped frames (6), and two clamping blocks (8) respectively fixedly mounted on the output shafts of the two control cylinders (7), wherein the L-shaped frames (6) are symmetrically provided with movable holes, and the output shafts of the control cylinders (7) are slidably inserted into the movable holes.

2. The grinding device for aluminum alloy die casting according to claim 1, characterized in that: The processing table (1) is provided with a mounting groove, and the rotating assembly comprises a driving motor (9) fixedly mounted in the mounting groove, a rectangular spring rod (10) fixedly mounted on the output shaft of the driving motor (9), a hexagonal block (11) fixedly mounted on the upper end of the rectangular spring rod (10), and a connecting column (12) fixedly mounted on the lower surface of the circular placement plate (5), wherein the lower surface of the connecting column (12) is provided with a hexagonal groove (13), and the processing table (1) is provided with a first transmission assembly for driving the hexagonal block (11) to move vertically downward.

3. The grinding device for aluminum alloy die casting according to claim 2, characterized in that: The upper surface of the processing table (1) is provided with an L-shaped hole connected to the mounting groove. The first transmission assembly comprises an L-shaped slide bar (14) slidably mounted in the L-shaped hole, a support rod (15) rotatably mounted on one end of the L-shaped slide bar (14), a rotating ring (16) rotatably mounted on the lower surface of the hexagonal block (11), and a moving component for driving the L-shaped slide bar (14) to move horizontally. One end of the support rod (15) away from the L-shaped slide bar (14) is rotatably connected to the rotating ring (16).

4. The grinding device for aluminum alloy die casting according to claim 3, characterized in that: A moving groove is formed at the upper end of the L-shaped sliding rod (14), and the moving component comprises a rectangular rod (17) slidably mounted in the moving groove via a limiting part, a metal shaft (18) vertically fixedly mounted on the upper end of the rectangular rod (17), a roller (19) rotatably sleeved on the metal shaft (18), and a plurality of triangular blocks (20) fixedly mounted on the side of the circular placement plate (5), wherein the plurality of triangular blocks (20) are arranged in a circle on the circular placement plate (5), and a lifting component for driving the rectangular rod (17) to move vertically upward is provided on the lifting cylinder (3).

5. The grinding device for aluminum alloy die casting according to claim 4, characterized in that: The L-shaped sliding rod (14) is provided with a strip-shaped limiting hole which is in communication with the moving groove. The limiting part comprises a limiting rod (21) which is fixedly mounted on the rectangular rod (17). One end of the limiting rod (21) passes through the strip-shaped limiting hole.

6. The grinding device for aluminum alloy die casting according to claim 4, characterized in that: The lifting assembly comprises an L-shaped mounting rod (22) fixedly mounted on the output shaft of the lifting cylinder (3), a buffer spring rod (23) fixedly mounted on the lower end of the mounting rod (22), and a magnet (24) fixedly mounted on the lower end of the buffer spring rod (23), wherein the metal shaft (18) is located directly below the magnet (24).

7. The grinding device for aluminum alloy die casting according to claim 6, characterized in that: The circular placement plate (5) is provided with a plurality of positioning holes (27), the plurality of positioning holes (27) being arranged in a circumference on the circular placement plate (5), a fixing block (25) being fixedly mounted on the mounting rod (22), and a positioning rod (26) being vertically fixedly mounted on the lower end of the fixing block (25).

8. The grinding device for aluminum alloy die casting according to claim 1, characterized in that: The circular placement plate (5) is provided with a plurality of rectangular grooves, and the circular placement plate (5) is provided with a plurality of slide grooves respectively connected to the plurality of rectangular grooves. The plurality of rectangular grooves are arranged in a circle on the circular placement plate (5). A support plate (28) is rotatably installed in each of the plurality of rectangular grooves. The support plate (28) is located between two clamping blocks (8). A slider (30) is slidably installed in each of the plurality of slide grooves via a telescopic spring (29). A support rod (31) is rotatably installed on the slider (30). One end of the support rod (31) away from the slider (30) is rotatably connected to one end of the support plate (28). A blanking plate (32) is fixedly installed on the side of the processing table (1). The processing table (1) is provided with a second transmission component for driving the slider (30) to move in the direction of the support plate (28).

9. The grinding device for aluminum alloy die casting according to claim 8, characterized in that: The second transmission assembly comprises a vertical rod (34) vertically fixedly mounted above the circular placement plate (5) via a bracket (33), an L-shaped connecting block (35) fixedly mounted on the sliding block (30), and an arc-shaped guide block (36) fixedly mounted on the connecting block (35); the vertical rod (34) is located on the movement path of the arc-shaped guide block (36).

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