Metal casting surface polishing device

Abstract

The invention provides a metal casting surface polishing device, and belongs to the technical field of metal casting production. The device comprises polishing and conveying mechanisms, a polishing belt and a feeding belt, the polishing and conveying mechanisms are used for clamping and conveying the metal castings, the feeding belt is rotationally arranged between the two polishing and conveying mechanisms, multiple sets of containing grooves are formed in the surface of the feeding belt, and the containing grooves are used for containing the metal castings and positioning the metal castings; the grinding and conveying mechanism comprises a processing table, a conveying assembly and a fixing clamp. The invention particularly provides a metal casting surface polishing device capable of automatically feeding and discharging a cylindrical metal casting and polishing the outer circumferential surface and the comprehensive two ends of the metal casting.

Description

Technical Field

[0001] The present invention belongs to the technical field of metal casting production, and specifically relates to a surface grinding device for metal castings. Background Art

[0002] Casting is one of the basic processes in modern mechanical manufacturing industry. Since casting can only achieve the forming of simple structures, some metal castings need to be further processed including boring, milling, turning, grinding, cutting and other processes after being made. Among them, grinding treatment can improve the smoothness of the surface of metal castings.

[0003] There are various types and shapes of metal castings, and different grinding methods are used for different metal castings. Cylindrical shape is a common style of metal castings. For cylindrical metal castings, there is a grinding requirement for both the circumferential outer surface and the end face. Although the existing surface grinding devices for metal castings can complete the multi-surface grinding treatment of a single cylindrical metal casting by changing the relative position between the grinding part and the surface of the metal casting. However, it is still difficult to complete the continuous assembly line type grinding of the circumferential outer surface and the end face of multiple cylindrical metal castings, thus affecting the efficiency of the surface grinding treatment of metal castings. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a surface grinding device for metal castings to at least partially solve the problems raised in the above background art.

[0005] The present invention provides the following technical solutions: A surface grinding device for metal castings proposed by the present invention includes: Two groups of grinding and conveying mechanisms for clamping and conveying metal castings, and the two groups of grinding and conveying mechanisms alternately clamp the metal castings; A grinding belt rotatably arranged between the two groups of grinding and conveying mechanisms for grinding the surface of the metal castings conveyed by the grinding and conveying mechanisms; A loading belt rotatably arranged between the two groups of grinding and conveying mechanisms, and a plurality of placement grooves are formed on the surface of the loading belt, and the placement grooves are used for placing metal castings and positioning the metal castings; A loading box is arranged above the loading belt, both the upper and lower ends of the loading box are open, the distance between the upper surface of the loading belt and the lower end of the loading box is less than the diameter of the cylindrical metal casting, and the distance between the upper surface of the placement groove of the loading belt and the lower end of the loading box is greater than the diameter of the cylindrical metal casting; Among them, the grinding and conveying mechanism includes: A processing table, and a guiding track is formed on the processing table; A conveying assembly rotatably arranged on the processing table, the guiding track is located inside the conveying assembly, and the linear velocity of the loading belt is equal to the linear velocity of the conveying assembly; Multiple sets of fixed jigs for clamping and fixing metal castings. The fixed jigs are driven by a conveying component to drive the metal casting to move relative to the grinding belt. When the fixed jigs move with the conveying component, they are configured to be guided by a guiding track and the spacing between them and the metal casting is adjustable.

[0006] Further, the guiding track is arranged in a convex-shaped path. A sliding column is slidably arranged in the guiding track. The fixed jig is connected to the sliding column. An installation plate is provided on the conveying component. The fixed jig is guided by the guiding track and slides along the installation plate. The guiding track includes a conveying section, a guiding section, and a clamping section, where: The clamping section and the conveying section are arranged in parallel. The length of the clamping section is less than that of the conveying section. There are two sets of guiding sections. One ends of the two sets of guiding sections are respectively connected to the two ends of the clamping section, and the other ends are respectively connected to the two ends of the conveying section. The guiding section is perpendicular to the conveying section and the clamping section. The spacing between the clamping section and the loading belt is less than the spacing between the conveying section and the loading belt.

[0007] Further, an installation seat is provided at the upper end of the sliding column. A magnet plate is provided on the installation seat. Two sets of electromagnets are provided on the processing table. The two sets of electromagnets are respectively arranged corresponding to the two sets of guiding sections and are respectively arranged on the sides of the two sets of guiding sections away from the loading belt. The two sets of electromagnets are respectively a first electromagnet and a second electromagnet. The magnetic poles on the opposite sides of the first electromagnet and the magnet plate are the same, and the magnetic poles on the opposite sides of the second electromagnet and the magnet plate are opposite.

[0008] Further, the fixed jig includes: A rotating shaft rotatably arranged on the installation plate. The rotating shaft is a hollow tubular structure. A sliding rod passing through and slidably arranged in the rotating shaft. One end of the sliding rod is connected to the installation seat. A fixing component connected to the other end of the sliding rod.

[0009] Further, there are two sets of fixing components. The two sets of fixing components are respectively an outer fixing component and an inner fixing component. The fixing component includes a housing. The housing of the outer fixing component is connected to the sliding rod. The housing of the inner fixing component is connected to the housing of the outer fixing component. The fixing component further includes: A fixing motor arranged on the side wall of the housing. A driving bevel gear arranged on the output shaft of the fixing motor. A bidirectional screw rod rotatably arranged between the opposite inner walls of the housing. A driven bevel gear arranged on the bidirectional screw rod. The driven bevel gear meshes with the driving bevel gear. Two sets of fixing clamping plates symmetrically arranged at both ends of the bidirectional screw rod. Among them, a guiding chute is provided on the housing of the external fixing assembly. The fixing clamp of the external fixing assembly is connected to the bidirectional screw through threads, and the fixing clamp penetrates and is slidably arranged in the guiding chute; A pushing plate is connected to the bidirectional screw of the internal fixing assembly through threads. A pushing rod is provided on the pushing plate. The pushing rod penetrates and is slidably arranged on the side wall of the housing of the internal fixing assembly, and the fixing clamp is connected to the pushing rod.

[0010] Furthermore, a driving groove is provided on the upper surface of the mounting base. A sliding rod is fixedly arranged between the opposite side walls of the driving groove. Both ends of the magnet plate are slidably arranged on the sliding rod. A return spring is sleeved on the sliding rod, and both ends of the return spring are respectively connected to the magnet plate and one side wall of the driving groove; A first flat head key is fixedly arranged on the rotating shaft. A second flat head key is arranged on the side wall of the driving groove connected to the return spring. Both the first flat head key and the second flat head key are electrically connected to the fixed motor, and the first flat head key, the second flat head key and the fixed motor adopt a one-open double-control connection method.

[0011] Furthermore, a rack is provided on the processing table. The rack is located on one side of the clamping section and corresponds to the grinding belt. A gear is provided on the rotating shaft. The gear meshes with the rack. One of the inner wall of the rotating shaft and the outer wall of the sliding rod is provided with a protrusion, and the other is provided with a groove. The protrusion is snap-fitted and slidably arranged in the groove.

[0012] Furthermore, there are two groups of grinding belts. The two groups of grinding belts respectively correspond to and cooperate with the clamping sections of the two guiding tracks. The grinding belt includes a bracket with an inverted L-shaped cross-section, and the bracket is arranged towards the clamping section of the guiding track corresponding to it; The brackets of the two groups of grinding belts face in opposite directions.

[0013] Furthermore, the grinding belt includes an outer surface grinding belt and an end face grinding belt. The outer surface grinding belt is configured to rotate above the metal casting, and the end face grinding belt is configured to rotate on the side of the metal casting. The end face grinding belt is perpendicular to the outer surface grinding belt, and the upper end of the end face grinding belt is lower than the lower surface of the outer surface grinding belt.

[0014] Furthermore, the width of the outer surface grinding belt is less than the length of the metal casting and greater than half of the length of the metal casting; The clamping sections of the two groups of guiding tracks are misaligned and partially overlap.

[0015] Further, a loading box is arranged above the loading belt. The distance between the upper surface of the loading belt and the lower end of the loading box is less than the diameter of the cylindrical metal casting, and the distance between the upper surface of the placement groove of the loading belt and the lower end of the loading box is greater than the diameter of the cylindrical metal casting. A discharging belt is rotatably arranged between the two grinding and conveying mechanisms. The discharging belt is located at one end of the grinding and conveying mechanism away from the loading belt.

[0016] It should be noted that the tail end of the loading belt and the head end of the discharging belt both extend beyond the guiding section of a set of guiding tracks. The loading belt cooperates with a set of grinding and conveying mechanisms through this position setting to achieve stable loading of the metal casting, and the discharging belt cooperates with the other set of grinding and conveying mechanisms through this position setting to achieve stable discharging of the metal casting.

[0017] The beneficial effects achieved by the present invention with the above structure are as follows: 1. Through the setting of the annularly rotating conveying component and the guiding tracks, during the process of conveying and grinding the metal casting on the assembly line, the relative position between the fixing fixture and the metal casting and the clamping state of the fixing fixture are adjusted. Cooperating with the loading belt and the discharging belt, automatic loading and automatic unloading of the metal casting are realized, and continuous assembly line grinding treatment of the cylindrical metal casting is completed, improving the surface grinding efficiency of the metal casting.

[0018] 2. Through the setting of the gear and the rack, during the process of the conveying component driving the metal casting to move, the driving rotating shaft drives the metal casting to rotate by itself. The rotating metal casting cooperates with the two grinding belts to comprehensively cover and grind the circumferential outer surface and both end faces of the metal casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention. In the drawings: Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 is Figure 1 a partial enlarged view of part A of Figure 3 is a schematic diagram of the structure of an embodiment of the present invention in the top view direction; Figure 4 is a three-dimensional sectional view of the loading belt and the loading box of an embodiment of the present invention; Figure 5 is a schematic diagram of the structure of the fixing fixture of an embodiment of the present invention; Figure 6 is Figure 5 a partial enlarged view of part B of Figure 7Schematic cross-sectional structure diagram of the fixing component and the metal casting according to an embodiment of the present invention; Figure 8 is Figure 7 partial enlarged view of part B of; Figure 9 Schematic cross-sectional structure diagram of the grinding belt according to an embodiment of the present invention.

[0020] Among them, 1. Grinding and conveying mechanism, 2. Grinding belt, 3. Loading belt, 4. Placing groove, 5. Loading box, 6. Processing table, 7. Guide track, 8. Transmission component, 9. Fixing fixture, 10. Slide column, 11. Mounting plate, 12. Conveying section, 13. Guide section, 14. Clamping section, 15. Mounting seat, 16. Magnet plate, 17. First electromagnet, 18. Second electromagnet, 19. Rotating shaft, 20. Sliding rod, 21. First flat head button, 22. Second flat head button, 23. Shell, 24. Fixed motor, 25. Active bevel gear, 26. Bidirectional screw, 27. Driven bevel gear, 28. Fixed clamping plate, 29. Guide chute, 30. Pushing plate, 31. Pushing rod, 32. Rack, 33. Gear, 34. Protrusion, 35. Bracket, 36. Outer surface grinding belt, 37. End face grinding belt, 38. Unloading belt, 39. Driving groove, 40. Slide bar, 41. Return spring, 42. Metal casting. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0023] Refer to Figure 1 and Figure 3 , a metal casting surface grinding device provided in this embodiment includes: Two groups of grinding and conveying mechanisms 1 for clamping and conveying the metal casting 42, and the two groups of grinding and conveying mechanisms 1 alternately clamp the metal casting 42; The grinding belt 2 is rotatably arranged between the two groups of grinding and conveying mechanisms 1 for grinding the surface of the metal casting 42 conveyed by the grinding and conveying mechanisms 1. During use, when the grinding and conveying mechanisms 1 clamp and fix the metal casting 42 and move, the rotating grinding belt 2 grinds the surface of the metal casting 42. The loading belt 3 is rotatably arranged between two groups of grinding and conveying mechanisms 1. A plurality of placing grooves 4 are formed on the surface of the loading belt 3. The placing grooves 4 are used for placing the metal casting 42 and positioning the metal casting 42. Through the arrangement of the placing grooves 4, when the loading belt 3 rotates to convey the metal casting 42, the metal casting 42 can be prevented from moving on the loading belt 3, ensuring the position stability of the metal casting 42 during the feeding process of the loading belt 3; Among them, the grinding and conveying mechanism 1 includes: The processing table 6 is provided with a guiding track 7 on it; The conveying component 8 is rotatably arranged on the processing table 6. The guiding track 7 is located inside the conveying component 8. The linear velocity of the loading belt 3 is equal to the linear velocity of the conveying component 8. Through the setting of the equal linear velocity, the feeding speed of the cylindrical metal casting 42 is adapted to the conveying speed of the conveying component 8, so as to realize the continuous feeding of the metal casting 42; A plurality of fixing jigs 9 are used for clamping and fixing the metal casting 42. The fixing jig 9 is driven by the conveying component 8 to drive the metal casting 42 to move relative to the grinding belt 2. When the fixing jig 9 moves with the conveying component 8, it is configured to be guided by the guiding track 7 and the distance between the fixing jig 9 and the metal casting 42 is adjustable.

[0024] During operation, when the fixing jig 9 approaches and inserts into the inner cylinder of the cylindrical metal casting 42, the fixing jig 9 clamps and fixes the metal casting 42. When the fixing jig 9 moves away from and moves out of the inner cylinder of the cylindrical metal casting 42, the fixing of the metal casting 42 by the fixing jig 9 is released; during the process that the conveying component 8 drives the metal casting 42 to move relative to the grinding belt 2 through the fixing jig 9, a plurality of fixing jigs 9 cooperate with the loading belt 3 and the grinding belt 2 to complete the continuous pipeline surface grinding of the metal casting 42.

[0025] It should be noted that the conveying component 8 adopted in this embodiment is a horizontal annular conveyor line, and the horizontal annular conveyor line is a prior art, so its structure will not be described in this solution.

[0026] Specifically, referring to Figures 1 - 3 , in this embodiment, the guiding track 7 is arranged in a convex-shaped path. A sliding column 10 is slidably arranged in the guiding track 7. The fixing jig 9 is connected to the sliding column 10. An installation plate 11 is arranged on the conveying component 8. The fixing jig 9 is guided by the guiding track 7 and slides along the installation plate 11; The guiding track 7 includes a conveying section 12, a guiding section 13 and a clamping section 14, where: The clamping section 14 and the conveying section 12 are arranged in parallel, the length of the clamping section 14 is less than that of the conveying section 12, there are two sets of guiding sections 13, one ends of the two sets of guiding sections 13 are respectively connected to the two ends of the clamping section 14, and the other ends are respectively connected to the two ends of the conveying section 12. The guiding section 13 is perpendicular to the conveying section 12 and the clamping section 14. The distance between the clamping section 14 and the feeding belt 3 is less than the distance between the conveying section 12 and the feeding belt 3.

[0027] During operation, when the conveying assembly 8 drives the fixed fixture 9 to move through the mounting plate 11, the fixed fixture 9 drives the sliding column 10 to slide along the guiding track 7. Due to the distance difference between the conveying section 12, the clamping section 14 and the feeding belt 3, the sliding column 10 drives the fixed fixture 9 to slide along the mounting plate 11 to adjust the distance between the fixed fixture 9 and the metal casting 42.

[0028] Specifically, referring to Figure 1 and Figure 5 , in this embodiment, a mounting seat 15 is provided at the upper end of the sliding column 10, a magnet plate 16 is provided on the mounting seat 15, two sets of electromagnets are provided on the processing table 6, the two sets of electromagnets are respectively arranged corresponding to the two sets of guiding sections 13, and are respectively arranged on the sides of the two sets of guiding sections 13 away from the feeding belt 3. The two sets of electromagnets are respectively the first electromagnet 17 and the second electromagnet 18. The magnetic poles on the opposite sides of the first electromagnet 17 and the magnet plate 16 are the same, and the magnetic poles on the opposite sides of the second electromagnet 18 and the magnet plate 16 are opposite.

[0029] During operation, when the mounting seat 15 moves to the guiding section 13 corresponding to the first electromagnet 17 along with the sliding column 10, due to the same magnetic poles of the first electromagnet 17 and the magnet plate 16, a repulsive force away from the magnet plate 16 is applied under the action of like poles repelling each other. The magnet plate 16 drives the sliding column 10 to slide along this guiding section 13 through the mounting seat 15, and the sliding column 10 transitions from the conveying section 12 into the clamping section 14. During this process, the fixed fixture 9 approaches and inserts into the inner cylinder of the cylindrical metal casting 42; When the mounting seat 15 moves to the guiding section 13 corresponding to the second electromagnet 18 along with the sliding column 10, due to the opposite magnetic poles of the second electromagnet 18 and the magnet plate 16, an attractive force approaching the magnet plate 16 is applied under the action of unlike poles attracting each other. The magnet plate 16 drives the sliding column 10 to slide along the guiding section 13 through the mounting seat 15, and the sliding column 10 moves from the clamping section 14 into the conveying section 12. During this process, the fixed fixture 9 moves away and moves out of the inner cylinder of the cylindrical metal casting 42.

[0030] It should be noted that, to avoid the electromagnetic solenoid interfering with the other fixed jigs 9 near the guiding section 13, a shielding shell needs to be provided outside the electromagnetic solenoid. The electromagnetic solenoid is shielded by the shielding shell except in the direction towards the guiding section 13. The acting force of the electromagnetic solenoid can only act on the magnet plate 16 corresponding to the fixed jig 9 that has moved to the guiding section 13, and the adsorption force or repulsive force of the electromagnetic solenoid will not affect the conveying power exerted by the conveying assembly 8 on the fixed jig 9.

[0031] Specifically, referring to Figure 5 , in this embodiment, the fixed jig 9 includes: A rotating shaft 19, rotatably arranged on the mounting plate 11. The rotating shaft 19 is a hollow tubular structure; A sliding rod 20, penetrating and slidingly arranged inside the rotating shaft 19. One end of the sliding rod 20 is connected to the mounting seat 15; A fixing assembly, connected to the other end of the sliding rod 20. The fixing assembly is used for clamping and fixing the metal casting 42, and the distance between the fixing assembly and the metal casting 42 is adjusted as the sliding rod 20 slides.

[0032] Specifically, referring to Figures 5 - 8 , in this embodiment, there are two groups of fixing assemblies. The two groups of fixing assemblies are respectively an outer fixing assembly and an inner fixing assembly. The fixing assembly includes a housing 23. The housing 23 of the outer fixing assembly is connected to the sliding rod 20, and the housing 23 of the inner fixing assembly is connected to the housing 23 of the outer fixing assembly. The outer fixing assembly and the inner fixing assembly cooperate to clamp and fix the metal casting 42 from both the inside and outside of the metal casting 42, ensuring the clamping and fixing stability of the metal casting 42; The fixing assembly further includes: A fixing motor 24, arranged on the side wall of the housing 23; A driving bevel gear 25, arranged on the output shaft of the fixing motor 24; A bidirectional screw rod 26, rotatably arranged between the opposite inner walls of the housing 23; A driven bevel gear 27, arranged on the bidirectional screw rod 26. The driven bevel gear 27 meshes with the driving bevel gear 25. Under the meshing transmission of the driving bevel gear 25 and the driven bevel gear 27, the fixing motor 24 drives the bidirectional screw rod 26 to rotate; Fixing clamping plates 28, symmetrically provided in two groups at both ends of the bidirectional screw rod 26. When the bidirectional screw rod 26 rotates, it drives the two groups of fixing clamping plates 28 to move in opposite directions, and the two groups of fixing clamping plates 28 cooperate to clamp and fix the metal casting 42; Among them, a guiding sliding groove 29 is opened on the housing 23 of the outer fixing assembly. The fixing clamping plate 28 of the outer fixing assembly is connected to the bidirectional screw rod 26 through a thread. The fixing clamping plate 28 penetrates and slides in the guiding sliding groove 29, and the fixing clamping plate 28 of the outer fixing assembly clamps and fixes the metal casting 42 from the outside; A push plate 30 is threadedly connected to the bidirectional screw 26 of the internal fixation assembly. A push rod 31 is provided on the push plate 30. The push rod 31 penetrates and slides on the side wall of the housing 23 of the internal fixation assembly. The fixed clamping plate 28 is connected to the push rod 31. The fixed clamping plate 28 of the internal fixation assembly clamps and fixes the metal casting 42 from the inside.

[0033] Specifically, referring to Figure 5 and Figure 6 , in this embodiment, a driving groove 39 is formed on the upper surface of the mounting seat 15. A sliding rod 40 is fixedly provided between the opposite side walls of the driving groove 39. Both ends of the magnet plate 16 slide on the sliding rod 40. A return spring 41 is sleeved on the sliding rod 40. Both ends of the return spring 41 are respectively connected to the magnet plate 16 and one side wall of the driving groove 39. When there is no external force, the return spring 41 can push the magnet plate 16 to always contact the side wall connected to the driving groove 39 and the sliding rod 20. A first flat head button 21 is fixedly provided on the rotating shaft 19. A second flat head button 22 is provided on the side wall of the driving groove 39 connected to the return spring 41. Both the first flat head button 21 and the second flat head button 22 are electrically connected to the fixed motor 24. The first flat head button 21, the second flat head button 22 and the fixed motor 24 adopt a one-open double-control connection method. Pressing any one of the first flat head button 21 and the second flat head button 22 can realize the start and stop control of the fixed motor 24.

[0034] It should be noted that the side wall of the driving groove 39 (i.e., the mounting seat 15) will not affect the magnetic adsorption or repulsive force of the electromagnet on the magnet plate 16. And the first flat head button 21 and the second flat head button 22 adopted in this embodiment are both automatic reset buttons, which can automatically reset after the pressure is released and wait for the next press to drive the fixed motor 24 to act.

[0035] During operation, when the sliding column 10 moves along the conveying section 12 to the first guiding section 13, since the magnet plate 16 contacts one side wall of the driving groove 39, the magnetic repulsive force of the first electromagnet 17 on the magnet plate 16 directly acts on the mounting seat 15. The mounting seat 15 drives the sliding column 10 to move from the conveying section 12 to the clamping section 14 along the guiding section 13. At the same time, the mounting seat 15 drives the fixing assembly to be embedded into the inner cylinder of the metal casting 42 through the sliding rod 20. As the mounting seat 15 approaches the rotating shaft 19 and presses the first flat head button 21, the fixed motor 24 acts, and the fixed motor 24 drives the fixed clamping plate 28 to clamp and fix the metal casting 42.

[0036] When the sliding column 10 moves along the clamping section 14 to the second guiding section 13, the second electromagnet 18 exerts a magnetic adsorption force on the magnet plate 16. The magnet plate 16 slides along the sliding rod 40, the return spring 41 is compressed, the magnet plate 16 presses the second flat head button 22, and at the same time contacts the other side wall of the driving groove 39. The second flat head button 22 controls the fixed motor 24 to rotate in the reverse direction, releasing the clamping and fixing of the metal casting 42 by the fixed clamping plate 28. At the same time, the magnet plate 16 drives the sliding column 10 to move into the conveying section 12 along the second guiding section 13 by applying a force to the mounting seat 15, and the fixing component is removed from the inner cylinder of the metal casting 42.

[0037] Specifically, referring to Figures 1 - 3 and Figure 5 , in this embodiment, a rack 32 is provided on the processing table 6. The rack 32 is located on one side of the clamping section 14 and corresponds to the grinding belt 2. A gear 33 is provided on the rotating shaft 19. The gear 33 meshes with the rack 32. One of the inner wall of the rotating shaft 19 and the outer wall of the sliding rod 20 is provided with a protrusion 34, and the other is provided with a groove. The protrusion 34 is engaged and slidably arranged in the groove.

[0038] During operation, when the mounting plate 11 drives the rotating shaft 19 to move during the movement of the conveying component 8, when the rotating shaft 19 drives the gear 33 to move to the rack 32, through the meshing of the gear 33 and the rack 32, the rotating shaft 19 rotates itself, and through the cooperation of the protrusion 34 and the groove, the sliding rod 20 is driven to rotate synchronously. The sliding rod 20 can drive the metal casting 42 to rotate through the fixing component. When the rotating metal casting 42 moves below the grinding belt 2, the surface of the metal casting 42 is comprehensively ground under the action of the rotating grinding belt 2.

[0039] Specifically, referring to Figure 1 , Figure 3 and Figure 9 , in this embodiment, there are two sets of grinding belts 2. The two sets of grinding belts 2 respectively correspond to and cooperate with the clamping sections 14 of the two guiding tracks 7. The grinding belt 2 includes a bracket 35 with an inverted L-shaped longitudinal section. The bracket 35 faces the clamping section 14 of the guiding track 7 corresponding to it. When the fixed clamp 9 of a set of grinding and conveying mechanisms 1 clamps the metal casting 42 and moves it into the clamping section 14 of the guiding track 7 corresponding to it, the inverted L-shaped structure of the bracket 35 can ensure that the metal casting 42 smoothly passes below the grinding belt 2, and the surface grinding of the metal casting 42 is completed by this set of grinding belts 2; The brackets 35 of the two sets of grinding belts 2 face in opposite directions. The two brackets 35 facing in opposite directions respectively cooperate with the two sets of grinding and conveying mechanisms 1 to sequentially complete the surface grinding of the two halves of the metal casting 42.

[0040] Specifically, referring to Figure 9, in this embodiment, the grinding belt 2 includes an outer surface grinding belt 36 and an end face grinding belt 37. The outer surface grinding belt 36 is configured to rotate above the metal casting 42, and the end face grinding belt 37 is configured to rotate on the side of the metal casting 42. The end face grinding belt 37 is perpendicular to the outer surface grinding belt 36. The upper end of the end face grinding belt 37 is lower than the lower surface of the outer surface grinding belt 36. The outer surface grinding belt 36 grinds the circumferential outer surface of the metal casting 42, and the end face grinding belt 37 grinds the end face of the metal casting 42. Moreover, due to the height difference between the outer surface grinding belt 36 and the end face grinding belt 37, the rotational grinding actions of the two can be prevented from interfering with each other.

[0041] It should be noted that this solution can be used not only for grinding the cylindrical metal casting 42 with both ends flush, but also for metal castings 42 in the shape of a flange. When grinding the metal casting 42 in the shape of a flange, it is only necessary to ensure that the upper end of the end face grinding belt 37 is located below the flange end face protrusion 34, and the outer surface grinding treatment of the flange-shaped metal casting 42 can be successfully completed.

[0042] Specifically, referring to Figure 1 and Figure 3 , in this embodiment, the width of the outer surface grinding belt 36 is less than the length of the metal casting 42 and greater than half of the length of the metal casting 42. By the cooperation of the two sets of grinding belts 2, each can cover more than half of the covering length of the metal casting 42, ensuring that the circumferential outer surface of the metal casting 42 can be completely covered and ground; The clamping sections 14 of the two sets of guiding tracks 7 are misaligned and partially overlapped. Through the misaligned structure of the clamping sections 14 of the two sets of guiding tracks 7, the fixed clamps 9 of the two sets of grinding and conveying mechanisms 1 can clamp the metal casting 42 in sequence, and cooperate with the two sets of grinding belts 2 to grind the two half-surfaces of the metal casting 42 in sequence. Specifically: First, the fixed clamp 9 of one set of grinding and conveying mechanism 1 fixedly clamps the metal casting 42, and the corresponding grinding belt 2 grinds the half part of the metal casting 42 away from this set of grinding and conveying components. As the conveying component 8 conveys, the metal casting 42 is conveyed to be fixedly clamped by the fixed clamp 9 of the other set of grinding and conveying mechanism 1, and then the other set of grinding belt 2 grinds the other half part of the metal casting 42; and since the width of the outer surface grinding belt 36 is greater than half of the length of the metal casting 42, the two sets of grinding belts 2 can comprehensively cover and grind the circumferential outer surface of the metal casting 42.

[0043] In addition, when a set of fixed clamps 9 of the two sets of grinding and conveying mechanisms 1 simultaneously move to the overlapping part of the clamping section 14, the two sets of fixed clamps 9 correspond to each other. At this time, the two sets of fixed clamps 9 simultaneously clamp and fix the two ends of the metal casting 42, completing the replacement of the clamping actions of the two sets of grinding and conveying mechanisms 1 on the metal casting 42.

[0044] Specifically, referring to Figure 1 and Figure 4 , in this embodiment, a loading box 5 is arranged above the loading belt 3. Both the upper and lower ends of the loading box 5 are open. The distance between the upper surface of the loading belt 3 and the lower end of the loading box 5 is less than the diameter of the cylindrical metal casting 42, and the distance between the upper surface of the placing groove 4 of the loading belt 3 and the lower end of the loading box 5 is greater than the diameter of the cylindrical metal casting 42. When the loading belt 3 rotates, the position of the placing groove 4 relative to the loading box 5 can be adjusted. When the placing groove 4 moves below the loading box 5, since the distance between the lower end of the loading box 5 and the placing groove 4 of the loading belt 3 is greater than the diameter of the cylindrical metal casting 42, the cylindrical metal casting 42 falls from the loading box 5 onto the loading belt 3, and the feeding of the cylindrical metal casting 42 is realized in cooperation with the grinding and conveying mechanism 1. When the placing groove 4 moves away from below the loading box 5 along with the loading belt 3, the distance between the lower end of the loading box 5 and the upper surface of the loading belt 3 is less than the diameter of the cylindrical metal casting 42, and the cylindrical metal casting 42 cannot fall from the loading box 5 onto the loading belt 3.

[0045] Specifically, referring to Figure 1 and Figure 3 , in this embodiment, a discharging belt 38 is also rotatably arranged between the two groups of grinding and conveying mechanisms 1. The discharging belt 38 is located at one end of the grinding and conveying mechanism 1 away from the loading belt 3, and the polished metal casting 42 is received and discharged through the arrangement of the discharging belt 38.

[0046] It should be noted that the tail end of the loading belt 3 and the head end of the discharging belt 38 both extend beyond the guiding section 13 of a set of guiding tracks 7. The loading belt 3 cooperates with a set of grinding and conveying mechanisms 1 through this position setting to realize the stable feeding of the metal casting 42, and the discharging belt 38 cooperates with the other set of grinding and conveying mechanisms 1 through this position setting to realize the stable discharging of the metal casting 42.

[0047] For easy understanding, the set of grinding and conveying mechanisms 1 located below in Figure 3 is recorded as the first grinding and conveying mechanism, the set of grinding and conveying mechanisms 1 located above is recorded as the second grinding and conveying mechanism, the set of grinding belts 2 on the left side is denoted as the first grinding belt, and the first grinding belt cooperates with the first grinding and conveying mechanism to grind the lower half and the lower end face of the metal casting (only at the position shown in Figure 3 ), the set of grinding belts 2 on the right side is denoted as the second grinding belt, and the second grinding belt cooperates with the second grinding and conveying mechanism to grind the upper half and the upper end face of the metal casting (only at the position shown in Figure 3 ).

[0048] The working principle of the metal casting surface grinding device provided in this embodiment is as follows: (1) The metal casting 42 is placed in the loading box 5 and falls along the loading box 5. Since the distance between the upper surface of the loading belt 3 and the lower end of the loading box 5 is less than the diameter of the cylindrical metal casting 42, the cylindrical metal casting 42 cannot fall from the loading box 5 onto the loading belt 3. As the loading belt 3 rotates, when the placement groove 4 moves below the loading box 5, since the distance between the lower end of the loading box 5 and the placement groove 4 of the loading belt 3 is greater than the diameter of the cylindrical metal casting 42, the cylindrical metal casting 42 falls from the loading box 5 onto the loading belt 3; At this time, under the conveying action of the conveying assembly, the fixed fixture 9 of the first grinding and conveying mechanism just moves to the first guiding section 13 along with the sliding column 10. The first electromagnet 17 exerts a magnetic repulsive force on the magnet plate 16. Since the magnet plate 16 contacts the side wall of the driving groove 39 close to the sliding rod 20, the magnetic repulsive force of the first electromagnet 17 on the magnet plate 16 directly acts on the mounting seat 15. The mounting seat 15 drives the sliding column 10 to move from the conveying section 12 to the clamping section 14 along the guiding section 13. At the same time, the mounting seat 15 drives the fixing assembly to approach the metal casting 42 through the sliding rod 20, and the housing 23 of the inner fixing assembly is embedded into the inner cylinder of the metal casting 42; As the mounting seat 15 approaches the rotating shaft 19 and presses the first flat key 21, the fixed motor 24 rotates forward. Through the meshing of the driving bevel gear 25 and the driven bevel gear 27, the fixed motor 24 drives the bidirectional screw 26 to rotate. Under the driving action of the bidirectional screw 26, the two fixing clamping plates 28 of the outer fixing assembly approach and fit on the outer surface of the metal casting 42 from the outside, and the two fixing clamping plates 28 of the inner fixing assembly approach and fit on the inner surface of the metal casting 42 from the inside. The fixing of the metal casting 42 is completed under the combined action of the outer fixing assembly and the inner fixing assembly; During the above process, the sliding column 10 of the second grinding and conveying mechanism slides within the conveying section 12 of its corresponding guiding track 7, and its corresponding fixed fixture 9 is in a position away from the metal casting 42 and does not clamp and fix the metal casting 42.

[0049] (2) As the loading belt 3 and the conveying assembly 8 rotate synchronously, the metal casting 42 detaches from the loading belt 3 and moves and is conveyed along with the conveying assembly 8 under the clamping and fixing action of the fixed fixture 9. The conveying assembly 8 drives the sliding column 10 to move along the clamping section 14; When the rotating shaft 19 moves to the position of the rack 32 along with the mounting plate 11, the metal casting 42 also moves below the first grinding belt. Through the meshing between the rack 32 and the gear 33, the rotating shaft 19 rotates automatically during the process of moving along with the mounting plate 11. Under the combined action of the protrusion 34 and the groove, the rotating shaft 19 drives the fixed fixture 9 and the metal casting 42 to rotate through the sliding rod 20. During the process of the rotating and moving of the metal casting 42, the first grinding belt grinds half of the circumferential outer surface of the metal casting 42 and one end face close to the second grinding and conveying mechanism.

[0050] (3) As the two grinding and conveying mechanisms 1 rotate and convey synchronously, when the sliding column 10 of the second grinding and conveying mechanism moves to its corresponding first guiding section 13, under the repulsive force of the corresponding first electromagnet 17, the sliding column 10 enters the clamping section 14 from the conveying section 12 along the guiding section 13. The fixed clamp 9 of the second grinding and conveying mechanism also approaches and clamps the other end of the metal casting 42. At this time, the first grinding and conveying mechanism and the second grinding and conveying mechanism simultaneously clamp and fix the two groups of the metal casting 42, and the two grinding and conveying mechanisms 1 cooperate to convey the metal casting 42.

[0051] (4) When the sliding column 10 of the first grinding and conveying mechanism moves to the second guiding section 13 along with the conveying component 8, the second electromagnet 18 exerts a magnetic adsorption force on the magnet plate 16. The magnet plate 16 moves along the sliding rod 40, the return spring 41 is compressed, the magnet plate 16 presses the second flat head button 22, and at the same time contacts the other side wall of the driving groove 39. The second flat head button 22 controls the fixed motor 24 to rotate reversely, releasing the clamping and fixing of the metal casting 42 by the fixed clamping plate 28. At the same time, the magnet plate 16 drives the sliding column 10 to move into the conveying section 12 along the second guiding section 13 by applying a force to the mounting seat 15. During this process, the fixing component moves away from the metal casting 42. At this time, the metal casting 42 is only conveyed by the movement of the second grinding and conveying mechanism.

[0052] (5) When the second grinding and conveying mechanism drives the metal casting 42 to move to the second grinding belt, the second grinding and conveying mechanism cooperates with the second grinding belt to complete the grinding process of the other half and the other end face of the metal casting 42. When the second grinding and conveying mechanism drives the fixed clamp 9 to move to the second guiding section 13, under the magnetic adsorption force of the corresponding second electromagnet 18, the clamping action on the metal casting 42 is released, and the metal casting 42 falls onto the blanking belt 38. The blanking belt 38 cooperates to complete the blanking and conveying of the metal casting 42.

[0053] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, material or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, material or device.

[0054] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal casting surface grinding device, characterized in that: include: Two sets of grinding and conveying mechanisms (1) for alternately clamping metal castings (42); A grinding belt (2) is rotatably disposed between the two sets of grinding conveying mechanisms (1); A loading belt (3), wherein a plurality of placement grooves (4) are provided on the surface of the loading belt (3), and the placement grooves (4) are used to place the metal casting (42) and position the metal casting (42); Wherein, the grinding and conveying mechanism (1) comprises: A processing table (6) having a guide track (7) formed thereon; A conveying assembly (8) is rotatably mounted on the processing table (6), and the guide track (7) is located inside the conveying assembly (8); A plurality of sets of fixing clamps (9), wherein the fixing clamps (9) are driven by the conveying assembly (8) to drive the metal casting (42) to move relative to the grinding belt (2), and when the fixing clamps (9) move with the conveying assembly (8), the distance between the fixing clamps (9) and the metal casting (42) is adjustable and guided by the guide rail (7).

2. The metal casting surface grinding device according to claim 1, characterized in that: The guide track (7) is arranged in a convex path, a slide post (10) is slidably arranged in the guide track (7), the fixing fixture (9) is connected to the slide post (10), a mounting plate (11) is arranged on the transmission component (8), and the fixing fixture (9) is guided by the guide track (7) to slide along the mounting plate (11); The guide track (7) comprises a conveying section (12), a guiding section (13) and a clamping section (14), wherein: The clamping section (14) and the conveying section (12) are arranged in parallel, the length of the clamping section (14) is shorter than that of the conveying section (12), the guide sections (13) are provided in two groups, one end of the two groups of guide sections (13) are respectively connected to the two ends of the clamping section (14), and the other ends are respectively connected to the two ends of the conveying section (12), the guide sections (13) are perpendicular to the conveying section (12) and the clamping section (14), and the spacing between the clamping section (14) and the feeding belt (3) is smaller than the spacing between the conveying section (12) and the feeding belt (3).

3. The metal casting surface grinding device according to claim 2, characterized in that: A mounting seat (15) is provided at the upper end of the slide column (10), and a magnet plate (16) is provided on the mounting seat (15). Two groups of electromagnets are provided on the processing table (6), and the two groups of electromagnets are respectively arranged corresponding to the two groups of guide sections (13), and are respectively arranged on the side of the two groups of guide sections (13) away from the feeding belt (3). The two groups of electromagnets are respectively a first electromagnet (17) and a second electromagnet (18). The first electromagnet (17) and the magnet plate (16) have the same magnetic poles on the side facing each other, and the second electromagnet (18) and the magnet plate (16) have opposite magnetic poles on the side facing each other.

4. The metal casting surface grinding device according to claim 3, characterized in that: The fixing fixture (9) comprises: A rotating shaft (19) is rotatably mounted on the mounting plate (11), wherein the rotating shaft (19) is a hollow tubular structure; A sliding rod (20) passes through and is slidably disposed in the rotating shaft (19), and one end of the sliding rod (20) is connected to the mounting seat (15); A fixed assembly is connected to the other end of the sliding rod (20).

5. The metal casting surface grinding device according to claim 4, characterized in that: The fixing assembly is provided with two groups, the two groups of fixing assemblies are respectively an outer fixing assembly and an inner fixing assembly, and the fixing assembly comprises: A shell (23), wherein the shell (23) of the outer fixing assembly is connected to the sliding rod (20), and the shell (23) of the inner fixing assembly is connected to the shell (23) of the outer fixing assembly; A fixed motor (24) is arranged on a side wall of the housing (23); An active bevel gear (25) is arranged on an output shaft of the fixed motor (24); A bidirectional screw (26) rotatably disposed between two opposite inner walls of the housing (23); A driven bevel gear (27) is disposed on the bidirectional screw (26), wherein the driven bevel gear (27) meshes with the driving bevel gear (25); Two sets of fixed clamps (28) are symmetrically provided at both ends of the bidirectional screw (26); The housing (23) of the external fixing component is provided with a guide slot (29), the fixing clamp (28) of the external fixing component is connected to the bidirectional screw (26) via a thread, and the fixing clamp (28) penetrates and is slidably disposed in the guide slot (29); A push plate (30) is threadedly connected to the bidirectional screw rod (26) of the internal fixing component. A push rod (31) is provided on the push plate (30). The push rod (31) penetrates and is slidably disposed on a side wall of the internal fixing component housing (23). The fixing clamp (28) is connected to the push rod (31).

6. The metal casting surface grinding device according to claim 5, characterized in that: A driving groove (39) is formed on the upper surface of the mounting seat (15), a sliding rod (40) is fixedly provided between two opposite side walls of the driving groove (39), two ends of the magnet plate (16) are slidably arranged on the sliding rod (40), a return spring (41) is sleeved on the sliding rod (40), and two ends of the return spring (41) are respectively connected to the magnet plate (16) and one side wall of the driving groove (39); A first flat-head button (21) is fixedly provided on the rotating shaft (19), and a second flat-head button (22) is provided on a side wall of the driving slot (39) connected to the return spring (41). The first flat-head button (21) and the second flat-head button (22) are both electrically connected to a fixed motor (24), and the first flat-head button (21), the second flat-head button (22) and the fixed motor (24) adopt a one-open dual-control connection mode.

7. The metal casting surface grinding device according to claim 4, characterized in that: The processing table (6) is provided with a rack (32), the rack (32) is located on one side of the clamping section (14) and corresponds to the grinding belt (2), the rotating shaft (19) is provided with a gear (33), the gear (33) is meshed with the rack (32), one of the inner wall of the rotating shaft (19) and the outer wall of the sliding rod (20) is provided with a protrusion (34), and the other is provided with a groove, and the protrusion (34) is slidably engaged in the groove.

8. The metal casting surface grinding device according to claim 1, characterized in that: The grinding belt (2) is provided with two groups, and the two groups of the grinding belt (2) are respectively matched with the clamping sections (14) of the two groups of guide rails (7), and the grinding belt (2) comprises a bracket (35) with an inverted L-shaped longitudinal section, and the bracket (35) is arranged toward the clamping section (14) of the guide rail (7) to which it corresponds, and the brackets (35) of the two groups of the grinding belt (2) face opposite directions.

9. The metal casting surface grinding device according to claim 8, characterized in that: The grinding belt (2) comprises an outer surface grinding belt (36) and an end surface grinding belt (37); the outer surface grinding belt (36) is configured to rotate above the metal casting (42); the end surface grinding belt (37) is configured to rotate on the side of the metal casting (42); the end surface grinding belt (37) is perpendicular to the outer surface grinding belt (36); the upper end of the end surface grinding belt (37) is lower than the lower surface of the outer surface grinding belt (36); the width of the outer surface grinding belt (36) is less than the length of the metal casting (42) and greater than half the length of the metal casting (42); the clamping sections (14) of the two sets of guide rails (7) are offset and partially overlap.

10. The metal casting surface grinding device according to claim 1, characterized in that: A loading box (5) is arranged above the loading belt (3), the distance between the upper surface of the loading belt (3) and the lower end of the loading box (5) is smaller than the diameter of the cylindrical metal casting (42), and the distance between the upper surface of the placement groove (4) of the loading belt (3) and the lower end of the loading box (5) is larger than the diameter of the cylindrical metal casting (42).

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