Circulation system for pellets used for workpiece grinding

Abstract

The present invention provides a circulation system of granular materials for workpiece grinding, including a first bracket and a vibration spring; a screening plate is connected to the bottom of the vibration support frame, and the screening plate is provided with a plurality of screening holes; a first driving mechanism is used to drive the vibration support frame to vibrate; two first support rollers are horizontally rotatably arranged on the second bracket, and a return belt is wound between the outer walls of the two first support rollers; a second driving mechanism is used to drive the first support rollers to rotate; second support rollers are rotatably arranged on both ends and the outer side of the bending part of the third bracket, and two belt pressing rollers are rotatably arranged on the inner side of the bending part of the third bracket; the lifting belt is in an annular L shape, and the three second support rollers are all attached to the inner wall of the lifting belt, and the two belt pressing rollers are respectively in contact with the outer sides of the bending part of the lifting belt; the third driving mechanism is used to drive the second support rollers to rotate; the lifting bucket is in a cover shape. The present invention provides a new circulation system of granular materials for workpiece grinding.

Description

Technical Field

[0001] The invention belongs to the technical field of workpiece grinding, and relates to a circulation system of granular materials for workpiece grinding. Background Art

[0002] Workpiece grinding, as the name implies, is to grind the surface of the workpiece and deal with burrs and warped edges in the production process of the workpiece to prevent cutting workers and facilitate subsequent assembly and use. There are many types of grinding equipment, some of which are manually polished, such as large parts, and some of which are more complex in shape and smaller in structure, such as some aluminum alloy or magnesium alloy products in trains and cars. At this time, it is suitable to use grinding particles to grind the workpiece.

[0003] At present, when using granular materials (resin materials, stone materials or metal materials can be selected according to actual conditions) to grind workpieces on the market, it mainly includes an inclined vibration plate. During grinding, the workpiece and granular materials are located on the top of the vibration plate, and then the vibration motor at the bottom of the vibration plate drives the vibration plate to vibrate, so that the workpiece and granular materials can move downstream, and during the movement, the grinding material has an impact on the surface of the workpiece, thereby achieving the effect of deburring, etc. There is a porous plate at the end of the vibration plate, and the granular materials fall from the porous plate, while the workpiece moves downstream, and performs corresponding operations downstream, such as cleaning, passivation, drying, etc. The abrasive material is also automatically conveyed in a cycle, so that a steady stream of workpieces can be polished. The circulating conveying of the abrasive material usually includes three conveyor belts. The first conveyor belt is inclined downward, with its top below the porous plate and its bottom above the second conveyor belt, and the top of the inclined second conveyor belt is above the third conveyor belt; the abrasive material falls from the porous plate onto the first conveyor belt, the first conveyor belt transfers the abrasive material to the second conveyor belt, and then the second conveyor belt lifts the abrasive material and sends it to the upstream end of the vibration plate, and finally falls onto the third conveyor belt, and is sent back to the upstream end of the vibration plate by the third conveyor belt, thus completing the circulating conveying of the abrasive material. Summary of the invention

[0004] The purpose of the present invention is to provide a circulation system for granular materials used for workpiece grinding, aiming to provide a new circulation system.

[0005] In order to achieve the above technical effects, the present invention provides a circulation system for granular materials for workpiece grinding, comprising:

[0006] A first bracket, wherein a plurality of vibration springs are arranged on the top of the first bracket;

[0007] A U-shaped vibration support frame with an opening facing upward, wherein the bottom of the vibration support frame is connected to the tops of all the vibration springs;

[0008] A screening plate, the screening plate is connected to the bottom of the vibration support frame, and the length direction of the screening plate is in the same direction as the length direction of the vibration support frame, and a plurality of screening holes are vertically penetrated through the screening plate;

[0009] a first driving mechanism, the first driving mechanism being used to drive the vibration support frame to vibrate;

[0010] A second bracket, on which two first support rollers are horizontally rotatably arranged, a return belt is wound between the outer walls of the two first support rollers, the return belt is located below the screening plate and the vibration support frame, and the projections of all the screening holes in the vertical direction are located within the projections of the return belt in the vertical direction;

[0011] a second driving mechanism, the second driving mechanism being used to drive the first supporting roller to rotate;

[0012] The third bracket is L-shaped, one side of the third bracket is vertically located on the side of the return belt, and the other side is horizontally located above the top of the vibration support frame, both ends of the third bracket and the outer side of the bending part are rotatably provided with second support rollers, and the inner side of the bending part of the third bracket is rotatably provided with two belt pressing rollers;

[0013] A lifting belt, wherein the lifting belt is in an L-shape, and the three second support rollers are all attached to the inner wall of the lifting belt, and the two belt pressing rollers are respectively against the outside of the two sides of the bending part of the lifting belt;

[0014] a third driving mechanism, the third driving mechanism being used to drive the second supporting roller to rotate;

[0015] The lifting bucket is in the shape of a cover, and a plurality of the lifting buckets are arranged on the lifting belt. The lifting bucket near the return belt is used to receive the granular material on the return belt, and the lifting bucket located above the vibration support frame is used to pour out the granular material and drop it into the vibration support frame. The movement trajectory of the lifting bucket is separated from the belt pressing roller.

[0016] The present invention is further configured such that first limiting members are vertically arranged on both sides of the top of the sieve plate, and both ends of the first limiting member are flush with both ends of the sieve plate.

[0017] The present invention is further configured such that a plurality of diverter strips are provided on the top of the screen plate, the length direction of the diverter strips is parallel to the length direction of the screen plate, and a plurality of the screening holes are provided between two adjacent diverter strips and between the diverter strip located at the edge and the first limiting member.

[0018] The present invention is further configured such that a U-shaped second limiting member is provided on the top of the second bracket, the opening of the second limiting member faces the third bracket, the second limiting member is higher than the return belt, and the second limiting member is used to limit the granular material on the return belt.

[0019] The present invention is further configured such that a transition plate is obliquely provided on the inner wall of the second bracket, a set gap is provided between the top of the transition plate and the top of the downstream end of the return belt, and a plurality of C-shaped temporary storage strips with openings facing upward are provided at intervals at the bottom;

[0020] The lifting bucket is provided with a plurality of clearance openings at one end away from the lifting belt, and the granular material on the return belt moves to the temporary storage strip through the transition plate. During the lifting process, the lifting bucket allows the temporary storage strip to move through the clearance openings, and allows the granular material on the temporary storage strip to enter the lifting bucket.

[0021] The present invention is further configured such that a side of the lifting bucket away from the lifting belt is inclined, and when the lifting bucket is located above the vibration support frame, the inclined portion of the lifting bucket is used to slide out the granular material.

[0022] The present invention is further configured such that an annular material leveling piece is provided on the top of the vibration support frame, and when the granular materials slide out of the lifting bucket, they all fall into the annular shape of the material leveling piece, and a plurality of material leveling bodies made of elastic material are provided on the bottom of the material leveling piece, and the material leveling bodies are all parallel, or all of the material leveling bodies are in a grid shape.

[0023] The present invention is further configured such that a first wheel body is provided at the outer end of the second support roller located at the bottom, the third driving mechanism includes a driving motor, a second wheel body is provided on the output shaft of the driving motor, and a first transmission member is wound around the outer walls of the first wheel body and the second wheel body.

[0024] The present invention is further configured such that the second driving mechanism includes a third wheel body arranged at the outer end of the first supporting roller, a fourth wheel body is fixedly arranged on the side of the first wheel body, and a second transmission member is wound around the outer walls of the third wheel body and the fourth wheel body.

[0025] The present invention is further configured such that the first driving mechanism includes a transfer frame, a transfer rod is horizontally rotatably arranged on the top of the transfer frame, a fifth wheel body and a sixth wheel body are coaxially arranged on the transfer rod, the diameter of the fifth wheel body is smaller than the diameter of the sixth wheel body, a seventh wheel body is coaxially arranged on the outer end of the first wheel body, the diameter of the seventh wheel body is larger than the diameter of the first wheel body and the diameter of the fifth wheel body, and the seventh wheel body is meshed with the fifth wheel body;

[0026] Two vibration frames are relatively arranged on the top of the first bracket, a vibration rod is horizontally rotatably arranged on the vibration frame, a plurality of eccentric wheels are arranged on the vibration rod, the top of the eccentric wheel movably contacts the middle part of the bottom of the vibration support frame, the vibration spring is continuously in an extended state, an eighth wheel body is arranged on the outer end of the vibration rod, a third transmission member is wound between the eighth wheel body and the outer wall of the sixth wheel body, and the diameter of the eighth wheel body is smaller than the diameter of the sixth wheel body.

[0027] Compared with the prior art, the present invention provides a circulation system for granular materials used for workpiece grinding. When grinding the workpiece, the conveyor belt conveys the workpiece to the top of the vibration support frame, and the granular materials are distributed all over the periphery of the workpiece; then the first driving mechanism drives the vibration support frame to vibrate up and down, and during the vibration process, not only the workpiece and the granular materials are driven downward to move, but also the granular materials and the workpiece collide with each other, so as to grind and remove burrs on the workpiece surface; when the workpiece and the granular materials move from the vibration support frame to the screening plate, the granular materials fall downward through the screening holes, and the workpiece is sent out through the bottom of the screening plate;

[0028] After the granular material falls out of the screening hole, it falls onto the upstream end of the return belt, and at the same time, the second driving mechanism drives the return belt to rotate, so that the granular material moves toward the third bracket; when the granular material moves to the end of the return belt, the granular material enters the lifting bucket; at the same time, the third driving mechanism drives the lifting belt to rotate, wherein the lifting belt, under the action of the three second support rollers and the two pressure rollers, makes the lifting belt present an L-shape for circulation, and at the same time, all the lifting buckets also move in an L-shape; in the process of the lifting bucket receiving and lifting the granular material, the lifting bucket at this time is open upward, so that the granular material can be normally received and lifted; when the lifting bucket moves to the top, the lifting belt drives the lifting bucket to change its angle (wherein the lifting belt is preferably made of a material with good flexibility and good toughness, so that it can better drive the lifting bucket to move at each turn), when the lifting bucket moves to the bottom of the lifting belt of the horizontal part, the granular material in the lifting bucket falls to the top of the vibrating support frame under the action of gravity, so that the granular material is recycled in the whole process. The various structures of the present application are maintained in the same vertical state, so the width of the circulation structure is small, the requirements for the factory site are low, and the difficulty of use and investment cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of an embodiment of a circulation system of granular materials for workpiece grinding according to the present invention;

[0030] Figure 2 yes Figure 1 A magnified view of part A;

[0031] Figure 3 yes Figure 1 A magnified view of part B;

[0032] Figure 4 yes Figure 1 Enlarged view of part C;

[0033] Figure 5 yes Figure 1 A magnified view of part D in the middle;

[0034] Figure 6 yes Figure 1 Enlarged view of part E in the middle;

[0035] Figure 7 It is a cross-sectional view of an embodiment of a circulation system of granular material for workpiece grinding according to the present invention;

[0036] Figure 8 yes Figure 7 Enlarged view of part F;

[0037] Fig. 9 yes Figure 7 Enlarged view of section G;

[0038] Fig.10 The present invention is a schematic diagram of an embodiment of the first wheel body part of the circulation system of the granular material for workpiece grinding Figure 2

[0039] Fig.11 Schematic diagram of an embodiment of a lifting bucket in a circulation system of granular material for workpiece grinding of the present invention Figure 2

[0040] Fig.12 It is a schematic diagram of an embodiment of a transition plate and a temporary storage strip in a circulation system of granular material for workpiece grinding according to the present invention.

[0041] Among them, 1. first bracket; 2. vibration spring; 3. vibration support frame; 4. screening plate; 5. screening hole; 6. second bracket; 7. first support roller; 8. return belt; 9. third bracket; 10. second support roller; 11. belt pressing roller 12. lifting belt; 13. lifting bucket; 14. first limiter; 15. diverter strip; 16. second limiter; 17. transition plate; 18. temporary storage strip; 19. clearance port; 20. material balance Components; 21. material distribution body; 22. first wheel body; 23. driving motor; 24. second wheel body; 25. first transmission component; 26. third wheel body; 27. fourth wheel body; 28. second transmission component; 29. ​​transfer frame; 30. transfer rod; 31. fifth wheel body; 32. sixth wheel body; 33. seventh wheel body; 34. vibration frame; 35. vibration rod; 36. eccentric wheel; 37. eighth wheel body; 38. third transmission component. DETAILED DESCRIPTION

[0042] The following is a further detailed description of the circulating system of the granular material for workpiece grinding proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer according to the following description. It should be noted that the accompanying drawings are in a very simplified form and are not in precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. The same or similar reference numerals in the accompanying drawings represent the same or similar components.

[0043] A circulation system for granular material for grinding a workpiece, such as Figures 1 to 12 As shown, including:

[0044] A first bracket 1, wherein a plurality of vibration springs 2 are arranged on the top of the first bracket 1;

[0045] A U-shaped vibration support frame 3 with an opening facing upward, wherein the bottom of the vibration support frame 3 is connected to the tops of all the vibration springs 2;

[0046] A screening plate 4, wherein the screening plate 4 is connected to the bottom of the vibration support frame 3, and the length direction of the screening plate 4 is in the same direction as the length direction of the vibration support frame 3, and a plurality of screening holes 5 are vertically penetrated through the screening plate 4;

[0047] A first driving mechanism, the first driving mechanism is used to drive the vibration support frame 3 to vibrate;

[0048] A second bracket 6, on which two first support rollers 7 are horizontally rotatably arranged, a return belt 8 is wound between the outer walls of the two first support rollers 7, the return belt 8 is located below the screening plate 4 and the vibration support frame 3, and the projections of all the screening holes 5 in the vertical direction are located within the projection of the return belt 8 in the vertical direction, and a plurality of horizontal rotatable auxiliary rods are also provided in the second bracket 6, the auxiliary rods are in contact with the bottom of the upper side of the return belt 8 to prevent the return belt 8 from deformation;

[0049] a second driving mechanism, the second driving mechanism being used to drive the first supporting roller 7 to rotate;

[0050] The third bracket 9 is L-shaped, one side of the third bracket 9 is vertically located on the side of the return belt 8, and the other side is horizontally located above the top of the vibration support frame 3, both ends of the third bracket 9 and the outer side of the bending part are rotatably provided with second support rollers 10, and the inner side of the bending part of the third bracket 9 is rotatably provided with two belt holding rollers 11;

[0051] A lifting belt 12, wherein the lifting belt 12 is in an L-shape, and the three second support rollers 10 are all attached to the inner wall of the lifting belt 12, and the two belt holding rollers 11 are respectively in contact with the outside of the two sides of the bending part of the lifting belt 12;

[0052] a third driving mechanism, the third driving mechanism being used to drive the second supporting roller 10 to rotate;

[0053] The lifting bucket 13 is in the shape of a cover, and a plurality of the lifting buckets 13 are arranged on the lifting belt 12. The lifting bucket 13 near the return belt 8 is used to receive the granular material on the return belt 8, and the lifting bucket 13 located above the vibration support frame 3 is used to pour out the granular material and drop it into the vibration support frame 3. The movement trajectory of the lifting bucket 13 is separated from the belt pressing roller 11.

[0054] First stoppers 14 are vertically disposed on both sides of the top of the sieve plate 4 , and both ends of the first stoppers 14 are flush with both ends of the sieve plate 4 .

[0055] A plurality of diverter strips 15 are arranged on the top of the sieve plate 4, and the length direction of the diverter strips 15 is parallel to the length direction of the sieve plate 4. There are a plurality of sieve holes 5 between two adjacent diverter strips 15 and between the diverter strip 15 located at the edge and the first limiting member 14.

[0056] A U-shaped second limiting member 16 is provided on the top of the second bracket 6 , the opening of the second limiting member 16 faces the third bracket 9 , the second limiting member 16 is higher than the return belt 8 , and the second limiting member 16 is used to limit the granular material on the return belt 8 .

[0057] The inner wall of the second bracket 6 is provided with a transition plate 17 at an angle, a set gap is provided between the top of the transition plate 17 and the top of the downstream end of the return belt 8, and a plurality of C-shaped temporary storage strips 18 with openings facing upward are provided at intervals at the bottom;

[0058] The lifting bucket 13 is provided with a plurality of clearance openings 19 at one end away from the lifting belt 12. The granular material on the return belt 8 moves to the temporary storage bar 18 through the transition plate 17. During the lifting process of the lifting bucket 13, the temporary storage bar 18 moves through the clearance openings 19, and the granular material on the temporary storage bar 18 enters the lifting bucket 13.

[0059] The side of the lifting bucket 13 away from the lifting belt 12 is inclined. When the lifting bucket 13 is located above the vibration support frame 3, the inclined part of the lifting bucket 13 is used to slide the granular material out.

[0060] An annular material leveling piece 20 is arranged on the top of the vibration support frame 3. When the granular materials slide out of the lifting bucket 13, they all fall into the annular shape of the material leveling piece 20. A plurality of material leveling bodies 21 made of elastic material are arranged on the bottom of the material leveling piece 20. The material leveling bodies 21 are all parallel, or all of the material leveling bodies 21 are in a grid shape.

[0061] A first wheel body 22 is arranged at the outer end of the second supporting roller 10 at the bottom, and the third driving mechanism includes a driving motor 23, a second wheel body 24 is arranged on the output shaft of the driving motor 23, and a first transmission member 25 is wound around the outer walls of the first wheel body 22 and the second wheel body 24.

[0062] The second driving mechanism includes a third wheel body 26 disposed at the outer end of the first supporting roller 7, a fourth wheel body 27 is fixedly disposed on the side of the first wheel body 22, and a second transmission member 28 is wound around the outer walls of the third wheel body 26 and the fourth wheel body 27.

[0063] The first driving mechanism includes a transfer frame 29, a transfer rod 30 is horizontally rotatably arranged on the top of the transfer frame 29, a fifth wheel body 31 and a sixth wheel body 32 are coaxially arranged on the transfer rod 30, the diameter of the fifth wheel body 31 is smaller than the diameter of the sixth wheel body 32, a seventh wheel body 33 is coaxially arranged on the outer end of the first wheel body 22, the diameter of the seventh wheel body 33 is larger than the diameter of the first wheel body 22 and the diameter of the fifth wheel body 31, and the seventh wheel body 33 is meshed with the fifth wheel body 31;

[0064] Two vibration frames 34 are relatively arranged on the top of the first bracket 1, and a vibration rod 35 is horizontally rotatably arranged on the vibration frame 34. A plurality of eccentric wheels 36 are arranged on the vibration rod 35. The top of the eccentric wheel 36 movably contacts the middle part of the bottom of the vibration support frame 3, and the vibration spring 2 is continuously in an extended state. An eighth wheel body 37 is arranged at the outer end of the vibration rod 35, and a third transmission member 38 is wound between the eighth wheel body 37 and the outer wall of the sixth wheel body 32, and the diameter of the eighth wheel body 37 is smaller than the diameter of the sixth wheel body 32.

[0065] The circulating system of granular materials for workpiece grinding provided by the present invention, when grinding the workpiece, the conveyor belt conveys the workpiece to the top of the vibration support frame 3, and makes the circumference of the workpiece full of granular materials; then the first driving mechanism drives the vibration support frame 3 to vibrate up and down, and in the vibration process, not only drives the workpiece and granular materials downward to move, but also makes the granular materials and the workpiece collide, so as to grind and remove burrs on the surface of the workpiece; when the workpiece and granular materials move from the vibration support frame 3 to the screening plate 4, the granular materials fall downward through the screening holes 5, and the workpiece is sent out through the bottom of the screening plate 4;

[0066] After falling out of the screening hole 5, the granular material falls onto the upstream end of the return belt 8, and at the same time, the second driving mechanism drives the return belt 8 to rotate, so that the granular material moves toward the third bracket 9; when the granular material moves to the end of the return belt 8, the granular material enters the lifting bucket 13; at the same time, the third driving mechanism drives the lifting belt 12 to rotate, wherein the lifting belt 12 is L-shaped and circulated under the action of the three second support rollers 10 and the two pressure rollers 11, and at the same time, all the lifting buckets 13 are also L-shaped. During the process of pelletizing, the lifting bucket 13 is open upward, so that the pelletized material can be normally received and lifted; when the lifting bucket 13 moves to the top, the lifting belt 12 drives the lifting bucket 13 to change its angle (wherein the lifting belt 12 is preferably made of a material with good flexibility and good toughness, so that it can better drive the lifting bucket 13 to move at each turn), when the lifting bucket 13 moves to the bottom of the lifting belt 12 of the horizontal part, the pelletized material in the lifting bucket 13 falls to the top of the vibrating support frame 3 under the action of gravity, so that the pelletized material is recycled in the whole process. The various structures of the present application are kept in the same vertical state, so the width of the circulation structure is small, the requirements for the factory site are low, and the difficulty of use and investment cost can be reduced.

[0067] During use, the driving motor 23 drives the first wheel body 22 to rotate through the second wheel body 24 and the first transmission member 25, and the first wheel body 22 drives the second support roller 10 at the bottom to rotate, thereby driving the lifting belt 12, the remaining second support rollers 10 and the two belt holding rollers 11 to rotate;

[0068] At the same time, the first wheel body 22 drives the fourth wheel body 27 and the seventh wheel body 33 to rotate, and the fourth wheel body 27 drives the third wheel body 26 and the first supporting roller 7 to rotate through the second transmission member 28, thereby driving the return belt 8 to rotate and conveying the granular material toward the third bracket 9;

[0069] The seventh wheel body 33 drives the fifth wheel body 31 to rotate, the fifth wheel body 31 drives the sixth wheel body 32 to rotate through the transfer rod 30, and the sixth wheel body 32 drives the eighth wheel body 37, the vibration rod 35 and the eccentric wheel 36 to rotate through the third transmission member 38. Since the eccentric wheel 36 is eccentric and the vibration spring 2 always pulls the vibration support frame 3 downward, the eccentric wheel 36 can cooperate with the vibration spring 2 when rotating, so that the vibration support frame 3 vibrates up and down.

[0070] Moreover, since the diameter of the seventh wheel body 33 is larger than that of the first wheel body 22 and the fifth wheel body 31, and the diameter of the fifth wheel body 31 is smaller than that of the sixth wheel body 32, and the diameter of the sixth wheel body 32 is larger than that of the eighth wheel body 37, the speed of the eighth wheel body 37 can be increased, that is, even if the speed of the return belt 8 and the lifting belt 12 is slow, the rotation speed of the vibration rod 35 can be ensured to be fast, thereby increasing the vibration frequency of the vibration support frame 3 (the size of each wheel in the figure is only for reference and does not represent the actual size); in this way, only one driving motor 23 is needed to drive the vibration support frame 3 to vibrate up and down, thereby conveying the workpiece and granular material downward, and at the same time, the return belt 8 can be driven to convey the granular material to the lifting bucket 13, and the lifting belt 12 can be driven to move, thereby lifting the granular material and pouring the granular material into the material equalizing member 20, without arranging a vibration motor at the bottom of the vibration support frame 3, and motors are arranged at the outer ends of the first support roller 7 and the second support roller 10, thereby reducing the use and production costs, and also enabling better synchronization and cooperation between the various structures. All the wheel bodies (the first to the eighth) can be sprockets or pulleys, and all the transmission members (the first to the third) can be chains or belts corresponding to the wheel bodies.

[0071] When the granular material moves on the screening plate 4, the first limit members 14 on both sides can prevent the workpiece and the granular material from falling, and at the same time the diverter strip 15 can also support the workpiece to prevent the workpiece from blocking the screening hole 5, so that the granular material can fall stably; at the same time, the diverter strip 15 can also play a diversion role, so that the granular material is diverted to a wider range of screening holes 5, preventing the granular material from not being able to fall smoothly after being concentrated.

[0072] When the granular material falls, it can be limited by the second limiting member 16, thereby better preventing the granular material from spilling from the return belt 8. When the granular material is conveyed to the end of the return belt 8, there is a small gap between the top of the transition plate 17 and the top of the return belt 8, so the two do not wear each other, and the granular material can also be well transitioned to the transition plate 17 and move to the temporary storage bar 18, wherein the temporary storage bar 18 is a C-shaped opening upward, so it can temporarily support the granular material, prevent the granular material from being crushed after falling and generating excessive force between the lifting bucket 13.

[0073] When the lifting bucket 13 moves upward, each temporary storage bar 18 can pass through the corresponding clearance opening 19, so that the lifting bucket 13 and the temporary storage bar 18 do not affect each other; at the same time, the outer side of the lifting bucket 13 is also grid-shaped except for the clearance opening 19, so it can also limit the granular material; when the lifting bucket 13 is higher than the temporary storage bar 18, the granular material slides into the interior of the lifting bucket 13 along the outer side of the lifting bucket 13; when the lifting bucket 13 moves to the top, the lifting bucket 13 is in a vertical state at this time, so the granular material moves downward under the action of gravity, and at the same time, because the bottom of the lifting bucket 13 is inclined downward, the granular material can all fall out.

[0074] After falling, the granular material will first enter the material leveling piece 20 and act on the material leveling body 21. Since the material leveling body 21 is elastic, the granular material can pass through the material leveling body 21 normally (regardless of whether the material leveling body 21 is parallel or grid-shaped). Moreover, since the material leveling piece 20 vibrates along with the vibration support frame 3, during the falling process of the granular material, the material leveling body 21 can not only buffer the granular material to prevent the granular material from breaking or causing excessive impact with the vibration support frame 3 or each other, but secondly, the material leveling body 21 can also disperse and release the granular material, so that the granular material can fall into the vibration support frame 3 evenly and dispersedly, so that it can act on the workpiece evenly, ensuring the grinding effect.

[0075] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A circulation system for granular material for workpiece grinding, characterized in that: include: A first bracket (1), wherein a plurality of vibration springs (2) are arranged on the top of the first bracket (1); A U-shaped vibration support frame (3) with an opening facing upward, wherein the bottom of the vibration support frame (3) is connected to the tops of all the vibration springs (2); A screening plate (4), the screening plate (4) being connected to the bottom of the vibration support frame (3), and the length direction of the screening plate (4) being in the same direction as the length direction of the vibration support frame (3), and a plurality of screening holes (5) being vertically penetrated through the screening plate (4); A first driving mechanism, the first driving mechanism is used to drive the vibration support frame (3) to vibrate; A second bracket (6), wherein two first support rollers (7) are horizontally rotatably arranged on the second bracket (6), a return belt (8) is wound between the outer walls of the two first support rollers (7), the return belt (8) is located below the screening plate (4) and the vibration support frame (3), and the projections of all the screening holes (5) in the vertical direction are located within the projection of the return belt (8) in the vertical direction; a second driving mechanism, the second driving mechanism being used to drive the first supporting roller (7) to rotate; A third bracket (9), the third bracket (9) is L-shaped, one side of the third bracket (9) is vertically located on the side of the return belt (8), and the other side is horizontally located above the top of the vibration support frame (3), both ends of the third bracket (9) and the outer side of the bending part are rotatably provided with second support rollers (10), and the inner side of the bending part of the third bracket (9) is rotatably provided with two belt holding rollers (11); A lifting belt (12), wherein the lifting belt (12) is in an L-shape, and the three second support rollers (10) are all attached to the inner wall of the lifting belt (12), and the two belt pressing rollers (11) are respectively in contact with the outside of the two sides of the bending part of the lifting belt (12); a third driving mechanism, the third driving mechanism being used to drive the second supporting roller (10) to rotate; A lifting bucket (13), the lifting bucket (13) is in the shape of a cover, and a plurality of the lifting buckets (13) are arranged on the lifting belt (12), the lifting bucket (13) near the return belt (8) is used to receive the granular material on the return belt (8), and the lifting bucket (13) located above the vibration support frame (3) is used to pour out the granular material and drop it into the vibration support frame (3), and the movement track of the lifting bucket (13) is separated from the belt pressing roller (11); The inner wall of the second bracket (6) is provided with a transition plate (17) at an angle, a set gap is provided between the top of the transition plate (17) and the top of the downstream end of the return belt (8), and a plurality of C-shaped temporary storage strips (18) with openings facing upward are provided at intervals at the bottom; A plurality of clearance openings (19) are provided at one end of the lifting bucket (13) away from the lifting belt (12), and the granular material on the return belt (8) moves to the temporary storage bar (18) through the transition plate (17). During the lifting process of the lifting bucket (13), the temporary storage bar (18) moves through the clearance openings (19), and the granular material on the temporary storage bar (18) enters the lifting bucket (13); The outer end of the second supporting roller (10) located at the bottom is provided with a first wheel body (22), the third driving mechanism comprises a driving motor (23), a second wheel body (24) is provided on the output shaft of the driving motor (23), and a first transmission member (25) is wound around the outer walls of the first wheel body (22) and the second wheel body (24); The second driving mechanism comprises a third wheel body (26) arranged at the outer end of the first supporting roller (7), a fourth wheel body (27) is fixedly arranged on the side of the first wheel body (22), and a second transmission member (28) is wound around the outer walls of the third wheel body (26) and the fourth wheel body (27); The first driving mechanism comprises a transfer frame (29), a transfer rod (30) is horizontally rotatably arranged on the top of the transfer frame (29), a fifth wheel body (31) and a sixth wheel body (32) are coaxially arranged on the transfer rod (30), the diameter of the fifth wheel body (31) is smaller than the diameter of the sixth wheel body (32), a seventh wheel body (33) is coaxially arranged on the outer end of the first wheel body (22), the diameter of the seventh wheel body (33) is larger than the diameter of the first wheel body (22) and the diameter of the fifth wheel body (31), and the seventh wheel body (33) is meshed with the fifth wheel body (31); Two vibration frames (34) are arranged opposite to each other at the top of the first bracket (1); a vibration rod (35) is arranged on the vibration frame (34) for horizontal rotation; a plurality of eccentric wheels (36) are arranged on the vibration rod (35); the top of the eccentric wheel (36) movably contacts the middle part of the bottom of the vibration support frame (3); the vibration spring (2) is continuously in an extended state; an eighth wheel body (37) is arranged at the outer end of the vibration rod (35); a third transmission member (38) is arranged between the eighth wheel body (37) and the outer wall of the sixth wheel body (32); the diameter of the eighth wheel body (37) is smaller than the diameter of the sixth wheel body (32).

2. The circulation system of granular material for workpiece grinding according to claim 1, characterized in that: First limiting members (14) are vertically arranged on both sides of the top of the sieve plate (4), and both ends of the first limiting member (14) are flush with both ends of the sieve plate (4).

3. The circulation system of granular material for workpiece grinding according to claim 2, characterized in that: A plurality of diverter strips (15) are arranged on the top of the sieve plate (4), the length direction of the diverter strips (15) is parallel to the length direction of the sieve plate (4), and a plurality of sieve holes (5) are provided between two adjacent diverter strips (15) and between the diverter strip (15) located at the edge and the first stopper (14).

4. The circulation system of granular material for workpiece grinding according to claim 1, characterized in that: A U-shaped second limiting member (16) is provided on the top of the second bracket (6), the opening of the second limiting member (16) faces the third bracket (9), the second limiting member (16) is higher than the return belt (8), and the second limiting member (16) is used to limit the granular material on the return belt (8).

5. The circulation system of granular material for workpiece grinding according to claim 1, characterized in that: The side of the lifting bucket (13) away from the lifting belt (12) is inclined. When the lifting bucket (13) is located above the vibration support frame (3), the inclined part of the lifting bucket (13) is used to slide out the granular material.

6. The circulation system of granular material for workpiece grinding according to claim 1 or 5, characterized in that: The top of the vibration support (3) is provided with an annular material distribution piece (20). When the granular materials slide out of the lifting bucket (13), they all fall into the annular shape of the material distribution piece (20). The bottom of the material distribution piece (20) is provided with a plurality of material distribution bodies (21) made of elastic material. The material distribution bodies (21) are all parallel, or all the material distribution bodies (21) are in a grid shape.

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