Metal casting grinding and polishing machine

Abstract

The utility model provides a metal casting grinding and polishing machine which comprises a machine frame, a grinding and polishing mechanism and a rotating mechanism, the grinding and polishing mechanism comprises a grinding and polishing assembly and a grinding and polishing motor which is fixedly arranged on the machine frame and used for driving the grinding and polishing assembly, and the rotating mechanism comprises a rotating disc used for bearing a metal casting. The rotating mechanism further comprises an electric rotating table which is fixedly arranged on the rack and used for driving the rotating disc, and the grinding and polishing assembly comprises a plurality of rotating rollers fixedly installed on the rack and a grinding and polishing belt which surrounds the rotating rollers and is used for grinding and polishing the edges of the metal castings. Wherein one rotating roller and the rack are fixedly provided with an anti-protruding mechanism, the anti-protruding mechanism and the grinding and polishing mechanism are both arranged on the outer portion of one side of the grinding and polishing belt, one side of the anti-protruding mechanism abuts against the grinding and polishing belt and is connected with the grinding and polishing belt in a rolling mode, and the problem that in the prior art, the edge of a metal casting is excessively ground and polished easily through a grinding and polishing device is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of metal casting processing equipment, and in particular to a metal casting grinding and polishing machine. Background Technology

[0002] Metal castings are made by melting metal into a liquid that meets certain requirements, pouring it into a mold, and then cooling, solidifying, and cleaning. During the cleaning process, metal castings require a metal casting polishing machine. Existing examples include Chinese patent CN209565912U, entitled "A Grinding and Polishing Device for Copper Castings," which relates to the technical field of copper casting processing equipment. This device includes a work box and a worktable, which are fixedly connected. A support plate is fixed to one surface of the work box; a rotating shaft is rotatably connected to the support plate; a grinding wheel is fixed to the rotating shaft; the worktable is fixed to one surface of the work box; a rectangular groove is formed on one surface of the worktable; a storage tray is fixed to one surface of the worktable; a support base is fixed to one surface of the worktable; a support rod is fixed to the surface of the support base; a steering device is fixed to one surface of the support rod; and a tension rod is fixed to one surface of the steering device. In this technical solution, a turntable and a storage tray are used to fix the copper casting. The rotation of the turntable is driven by a motor, thus allowing the copper casting to be ground and polished during rotation. However, when using this device to grind and polish the burrs on metal castings, it is difficult to control the grinding and polishing force and depth, which may result in excessive grinding and polishing of the casting edges, causing chamfers. Utility Model Content

[0003] This invention provides a metal casting grinding and polishing machine, which aims to solve the problem that existing grinding and polishing devices tend to over-polish the edges of metal castings.

[0004] This utility model provides a technical solution that adopts the following approach:

[0005] A metal casting polishing machine includes a frame, a polishing mechanism, and a rotating mechanism. The polishing mechanism includes a polishing assembly and a polishing motor fixedly mounted on the frame for driving the polishing assembly. The rotating mechanism includes a turntable fixedly supporting the metal casting and an electric rotary table fixedly mounted on the frame for driving the turntable. The polishing assembly includes multiple vertically arranged and rotatably connected to the top surface of the frame, and a polishing belt surrounding each of the rotating rollers for polishing the edges of the metal casting. The polishing motor is fixedly mounted inside the frame, with its shaft vertically upward through the top surface of the frame and fixedly connected to one of the rotating rollers. A laterally retractable anti-protrusion mechanism is fixedly mounted on the top surface of the frame, with one side of the anti-protrusion mechanism and the edge of the metal casting respectively abutting against two points on the outside of the polishing belt.

[0006] Preferably, a limiting groove is formed on the top surface of the frame, and the anti-protrusion mechanism includes a pressure plate that is laterally slidably connected in the limiting groove and a fixed seat fixedly set on the frame. Several rollers are rotatably connected to the pressure plate, and each roller is rotatably connected to the outer side of the polishing belt. Two cross-rotatably connected connecting rods are fixedly set on the side of the pressure plate away from the polishing belt. The other end of each of the two connecting rods is fixedly connected to a sliding block. A sliding groove is formed on the side of the fixed seat near the pressure plate, and the two sliding blocks are slidably connected in the sliding groove. A limiting spring is fixedly set on the opposite side of each of the two sliding blocks, and the opposite ends of the two limiting springs are respectively fixedly connected to the two inner side walls of the sliding groove.

[0007] Preferably, the anti-protrusion mechanism further includes two protruding strips respectively fixedly disposed on the two inner sidewalls of the sliding groove. The protruding strips are located inside the limiting springs. A first switch and a second switch are respectively fixedly installed at the opposite ends of the two protruding strips. The first switch and the second switch are respectively fixedly disposed inside the two limiting springs. The first switch is used to control the polishing motor to turn off, and the second switch is used to control the electric rotary table to turn off.

[0008] Preferably, the turntable is horizontally fixed on the top of the electric rotary table, and a magnetic plate for adsorbing metal castings is embedded in the center of the top of the turntable, with the magnetic plate flush with the top surface of the turntable.

[0009] Preferably, a mounting frame is fixedly installed on the frame, the top of the mounting frame extends above the turntable, and a limiting mechanism that can contact the top of the metal casting is fixedly installed on the top of the mounting frame.

[0010] Preferably, the limiting mechanism includes an electric telescopic rod that is vertically fixed on the top frame of the mounting frame. The rod body of the electric telescopic rod is set downward, and a rotating rod is rotatably connected to the bottom end of the rod body. The rotating rod is set vertically.

[0011] Preferably, a magnet protruding from the bottom surface of the rotating rod is fixedly provided at the bottom end of the rotating rod, and the magnet is used to attract metal castings.

[0012] Preferably, a buffer sleeve is fixedly provided at the bottom of the rotating rod, the buffer sleeve covers the magnet, and the bottom of the buffer sleeve can abut against the top surface of the metal casting.

[0013] Preferably, the top surface of the frame has a waste inlet that runs through the top and bottom, and a waste bin is fixedly installed at the bottom of the top surface of the frame, with the waste bin opening upwards and communicating with the waste inlet.

[0014] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0015] 1. The metal casting polishing machine provided by this utility model has a certain elasticity in its polishing belt. The rollers are always in rolling connection with the polishing belt. When the metal casting is not fixed on the turntable, the limiting spring is already compressed to a certain extent. The belt body on the polishing belt that is pressed against by the rollers is in force balance. When the metal casting fixed on the turntable comes into contact with the polishing belt, it will press against the lower side of that section of the belt body, causing it to be recessed away from the polishing mechanism. After the polishing belt polishes the metal casting for a period of time, a part of the edge of the metal casting is polished away. The recessed part of the polishing belt that is pressed against by the metal casting loses some support and will push the rollers outward, thereby pushing the movable pressure plate. The pressure plate drives two connected rods to push two sliding blocks to slide in opposite directions in the sliding groove. At this time, the sliding blocks are subjected to the feedback force of the limiting spring, which is converted into the feedback force of the pressure plate on the polishing belt, so as to prevent the polishing belt from pushing the edge of the metal casting too far and avoid over-polishing.

[0016] 2. In the metal casting polishing machine provided by this utility model, the rollers are always connected to the polishing belt. When the polishing force increases, that is, the speed of the polishing belt on the rotating roller increases, the rebound force at the recess generated by the polishing belt in contact with the metal casting is greater, which increases the pressure received by the two limiting springs. When the polishing force is too large, the two sliding blocks contact the first switch and the second switch respectively, so that the polishing motor and the electric rotary table stop working, thus avoiding the impact of excessive polishing belt force on the metal casting.

[0017] 3. The magnetic plate located at the bottom of the metal casting in the metal casting polishing machine provided by this utility model plays the role of adsorbing the metal casting from the bottom. The limiting mechanism presses and fixes the top of the metal casting from above, and the magnet adsorbs the metal casting from the top. The rotating rod in the limiting mechanism rotates together with the turntable and the metal casting. The buffer sleeve plays the role of preventing the top of the metal casting from being hit when the electric telescopic rod drives the magnet downward. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a metal casting grinding and polishing machine provided by this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the frame of this utility model;

[0020] Figure 3 This is a structural schematic diagram of the anti-protrusion mechanism of this utility model;

[0021] Figure 4 This is an exploded schematic diagram of the anti-protrusion mechanism of this utility model;

[0022] Figure 5 This is a schematic diagram of the limiting mechanism and the polishing mechanism of this utility model;

[0023] Figure 6This is an exploded view of the limiting mechanism of this utility model.

[0024] Reference numerals: 1. Frame; 11. Limiting groove; 12. Waste outlet; 13. Waste bin; 2. Grinding and polishing mechanism; 21. Grinding and polishing assembly; 22. Grinding and polishing motor; 23. Grinding and polishing belt; 24. Rotating roller; 3. Rotating mechanism; 31. Electric rotary table; 32. Turntable; 33. Magnetic plate; 4. Anti-protrusion mechanism; 41. Pressure plate; 42. Fixed base; 43. Connecting rod; 44. Sliding groove; 45. Sliding block; 46. Limiting spring; 47. First switch; 48. Second switch; 49. Roller; 5. Limiting mechanism; 51. Mounting bracket; 52. Electric telescopic rod; 53. Rotating rod; 54. Magnet; 55. Buffer sleeve; 6. Raised strip; 7. Metal casting. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-6 The present invention will be described in further detail below.

[0026] This utility model discloses a metal casting grinding and polishing machine.

[0027] A metal casting polishing machine includes a frame 1, a polishing mechanism 2, and a rotating mechanism 3. The polishing mechanism 2 includes a polishing component 21 and a polishing motor 22 fixedly mounted on the frame 1 for driving the polishing component 21. The rotating mechanism 3 includes a turntable 32 for fixing and supporting the metal casting 7, and the metal casting 7 rotates together with the turntable 32. The rotating mechanism 3 also includes an electric rotary table 31 fixedly mounted on the frame 1 for driving the turntable 32. The polishing component 21 includes a plurality of vertically arranged and rotatably connected to the top surface of the frame 1. The rotating roller 24 and the polishing belt 23 surrounding each rotating roller 24 for polishing the edge of the metal casting 7 are included. The polishing motor 22 is fixedly installed inside the frame 1. The shaft end of the polishing motor 22 passes vertically upward through the top surface of the frame 1 and is fixedly connected to one of the rotating rollers 24. The rotation direction of the polishing belt 23 is opposite to the rotation direction of the turntable 32. A laterally retractable anti-protrusion mechanism 4 is fixedly installed on the top surface of the frame 1. One side of the anti-protrusion mechanism 4 and the edge of the metal casting 7 respectively abut against two points on the outside of the polishing belt 23.

[0028] A limiting groove 11 is provided on the top surface of the frame 1. The anti-protrusion mechanism 4 includes a pressure plate 41 that is laterally slidably connected in the limiting groove 11 and a fixed seat 42 fixedly installed on the frame 1. Several rollers 49 are rotatably connected on the pressure plate 41. Each roller 49 is rotatably connected to the outside of the polishing belt 23. Two cross-rotatably connected connecting rods 43 are fixedly installed on the side of the pressure plate 41 away from the polishing belt 23. The other end of each connecting rod 43 is fixedly connected to a sliding block 45. A sliding groove 44 is provided on the side of the fixed seat 42 near the pressure plate 41. Both sliding blocks 45 are slidably connected in the sliding groove 44. A limiting spring 46 is fixedly installed on the opposite side of each sliding block 45. The opposite ends of the two limiting springs 46 are respectively fixedly connected to the two inner side walls of the sliding groove 44.

[0029] The anti-protrusion mechanism 4 also includes two protruding strips 6 that are respectively fixedly installed on the two inner sidewalls of the sliding groove 44. The protruding strips 6 are located inside the limiting spring 46. A first switch 47 and a second switch 48 are respectively fixedly installed at the opposite ends of the two protruding strips 6. The first switch 47 and the second switch 48 are respectively fixedly installed inside the two limiting springs 46. The first switch 47 is used to control the polishing motor 22 to turn off, and the second switch 48 is used to control the electric rotary table 31 to turn off.

[0030] The turntable 32 is horizontally fixed on the top of the electric rotary table 31. The polishing belt 23 is located above the horizontal plane of the turntable 32. A magnetic plate 33 is embedded in the center of the top of the turntable 32. The magnetic plate 33 is flush with the top surface of the turntable 32.

[0031] A mounting frame 51 is fixedly installed on the frame 1. The top of the mounting frame 51 extends above the turntable 32, and a limit mechanism 5 is fixedly installed on the top of the mounting frame 51.

[0032] The limiting mechanism 5 includes an electric telescopic rod 52 that is vertically fixed on the top of the mounting frame 51. The rod body of the electric telescopic rod 52 is set downwards, and a rotating rod 53 is rotatably connected to the bottom end of the rod body of the electric telescopic rod 52. The rotating rod 53 is set vertically.

[0033] A magnet 54 protruding from the bottom surface of the rotating rod 53 is fixedly provided at the bottom end of the rotating rod 53. A buffer sleeve 55 is fixedly provided at the bottom of the rotating rod 53, and the buffer sleeve 55 covers the magnet 54.

[0034] The top surface of the frame 1 is provided with a waste inlet 12 that runs through the top and bottom. A waste bin 13 is fixedly installed at the lower part of the top surface of the frame 1. The waste bin 13 is set with its opening facing upward and is connected to the waste inlet 12.

[0035] The implementation principle of this embodiment is as follows: Before polishing, the metal casting 7 to be polished is placed on the turntable 32. The electric telescopic rod 52 is driven to lower the rotating rod 53, magnet 54, and buffer sleeve 55 together. The buffer sleeve 55 contacts the top of the metal casting 7, thus completing the fixation of the metal casting 7. The electric rotary table 31 and polishing motor 22 are started, and the polishing belt 23 polishes the metal casting 7. After a certain period of polishing, a part of the edge of the metal casting 7 is polished away. The recessed part of the polishing belt 23 that is pressed against by the metal casting 7 loses some support and pushes the roller 49 outward, thereby pushing the pressure plate 41 to slide in the limiting groove 11. The pressure plate 41 drives the two connected connecting rods 43 to push the two sliding blocks 45 in the sliding groove 11. The sliding blocks 45 slide in opposite directions within the sliding groove 44. At this time, the sliding blocks 45 receive feedback force from the limiting springs 46, which is converted into feedback force from the pressure plate 41 on the polishing belt 23. This is to prevent the polishing belt 23 from pushing the edge of the metal casting 7 too far and to avoid over-polishing. When the polishing force increases, that is, the speed of the polishing belt 23 on the rotating roller 24 increases, the rebound force at the recess generated by the polishing belt 23 in contact with the metal casting 7 is greater, which increases the pressure received by the two limiting springs 46. When the polishing force is too great, the two sliding blocks 45 contact the first switch 47 and the second switch 48 respectively, causing the polishing motor 22 and the electric rotary table 31 to stop working, thus preventing the polishing belt 23 from having too great a force and affecting the metal casting 7.

[0036] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A metal casting polishing machine, comprising a frame (1), a polishing mechanism (2), and a rotating mechanism (3), wherein the polishing mechanism (2) comprises a polishing assembly (21) and a polishing motor (22) fixedly mounted on the frame (1) for driving the polishing assembly (21), and the rotating mechanism (3) comprises a turntable (32) for fixing and supporting a metal casting (7), characterized in that, The rotating mechanism (3) further includes an electric rotary table (31) fixedly mounted on the frame (1) for driving the turntable (32). The polishing assembly (21) includes a plurality of vertically mounted rotating rollers (24) rotatably connected to the top surface of the frame (1) and a polishing belt (23) surrounding and surrounding each rotating roller (24) for polishing the edge of the metal casting (7). The polishing motor (22) is fixedly mounted inside the frame (1). The shaft end of the polishing motor (22) passes vertically upward through the top surface of the frame (1) and is fixedly connected to one of the rotating rollers (24). A transversely retractable anti-protrusion mechanism (4) is fixedly mounted on the top surface of the frame (1). One side of the anti-protrusion mechanism (4) and the edge of the metal casting (7) respectively abut against two points outside the polishing belt (23).

2. The metal casting grinding and polishing machine according to claim 1, characterized in that, A limiting groove (11) is provided on the top surface of the frame (1). The anti-protrusion mechanism (4) includes a pressure plate (41) that is laterally slidably connected in the limiting groove (11) and a fixed seat (42) fixedly installed on the frame (1). Several rollers (49) are rotatably connected on the pressure plate (41). Each roller (49) is rotatably connected to the outside of the polishing belt (23). Two cross-rotatably connected rods are fixedly installed on the side of the pressure plate (41) away from the polishing belt (23). The connecting rod (43) has a sliding block (45) fixedly connected to the other end of each of the two connecting rods (43). The fixed seat (42) has a sliding groove (44) on the side near the pressure plate (41). The two sliding blocks (45) are slidably connected in the sliding groove (44). Limiting springs (46) are fixedly provided on the opposite side of each of the two sliding blocks (45). The opposite ends of the two limiting springs (46) are respectively fixedly connected to the two inner side walls of the sliding groove (44).

3. A metal casting grinding and polishing machine according to claim 2, characterized in that, The anti-protrusion mechanism (4) also includes two protruding strips (6) respectively fixedly installed on the two inner side walls of the sliding groove (44). The protruding strips (6) are located inside the limiting springs (46). A first switch (47) and a second switch (48) are respectively fixedly installed on the opposite ends of the two protruding strips (6). The first switch (47) and the second switch (48) are respectively fixedly installed inside the two limiting springs (46). The first switch (47) is used to control the grinding and polishing motor (22) to turn off, and the second switch (48) is used to control the electric rotary table (31) to turn off.

4. A metal casting grinding and polishing machine according to claim 3, characterized in that, The turntable (32) is horizontally fixed on the top of the electric rotary table (31). A magnetic plate (33) for adsorbing metal castings (7) is embedded in the center of the top of the turntable (32). The magnetic plate (33) is flush with the top surface of the turntable (32).

5. A metal casting grinding and polishing machine according to claim 4, characterized in that, A mounting bracket (51) is fixedly installed on the frame (1). The top of the mounting bracket (51) extends above the turntable (32). A limiting mechanism (5) that can contact the top of the metal casting (7) is fixedly installed on the top of the mounting bracket (51).

6. A metal casting grinding and polishing machine according to claim 5, characterized in that, The limiting mechanism (5) includes an electric telescopic rod (52) that is vertically fixed on the top frame of the mounting frame (51). The rod of the electric telescopic rod (52) is set downwards, and a rotating rod (53) is rotatably connected to the bottom end of the rod of the electric telescopic rod (52). The rotating rod (53) is set vertically.

7. A metal casting grinding and polishing machine according to claim 6, characterized in that, A magnet (54) protruding from the bottom surface of the rotating rod (53) is fixedly provided at the bottom end of the rotating rod (53), and the magnet (54) is used to attract the metal casting (7).

8. A metal casting grinding and polishing machine according to claim 7, characterized in that, A buffer sleeve (55) is fixedly provided at the bottom of the rotating rod (53). The buffer sleeve (55) wraps around the magnet (54), and the bottom of the buffer sleeve (55) can abut against the top surface of the metal casting (7).

9. A metal casting grinding and polishing machine according to claim 1, characterized in that, The top surface of the frame (1) is provided with a waste inlet (12) that runs through the top and bottom. A waste box (13) is fixedly installed at the bottom of the top surface of the frame (1). The waste box (13) is set with its opening facing upward and is connected to the waste inlet (12).

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