Efficient grinding device for paper pouring gate pipe machining

Abstract

The invention relates to an efficient polishing device for paper pouring gate pipe machining, the efficient polishing device comprises a machine box, a feeding assembly, a supporting assembly, an outer polishing assembly, a clamping assembly and an inner polishing assembly, the supporting assembly comprises a supporting column and a piston rod slidably arranged in the supporting column, the supporting column is sleeved with an air bag, and the feeding assembly is used for pushing a paper pipe to the supporting column; the inner grinding assembly comprises an inner grinding belt slidably arranged in a supporting column, an air hole of the piston rod coincides with an air hole of the supporting column while the piston rod moves, so that an air bag is inflated to support the paper tube, and the inner grinding belt descends to be away from the inner wall face of the paper tube while the supporting column drives the piston rod to move through air inflow. On the contrary, the piston rod resets to drive the inner grinding belt to be attached to the inner wall of the paper tube, the inner grinding belt rotates along with the supporting column and rotates to grind the inner wall of the paper tube, and the problems that the inner wall face of the paper tube is not ground, inserting heads on the two sides stretch into the paper tube to fix the paper tube, and end openings on the two sides of the paper tube are prone to being expanded are solved.

Description

Technical Field

[0001] The invention relates to the technical field of runner tube production devices, in particular to a high-efficiency grinding device for processing paper runner tubes. Background Art

[0002] The paper runner tube can allow high-temperature molten iron to pass smoothly in an oxygen-deficient state, and at the same time it will self-degenerate and carbonize to form a sintered product: carbon ash. This not only solves many shortcomings when using traditional ceramic runner tubes, but also improves the qualified rate of castings, increases the quality of castings, reduces the treatment of solid waste, and saves the cost of recycling casting raw materials and reused sand.

[0003] The paper runner tube needs to be polished during the processing to remove surface unevenness, burrs and dirt. The existing polishing process generally uses manual hand-held polishing, which is time-consuming and labor-intensive, and the uneven polishing leads to unqualified product surface.

[0004] A Chinese paper with application publication number CN107309791A discloses a paper tube surface grinding device, which includes: a support frame; a paper tube clamping assembly; a grinding assembly, which includes a base slidably mounted on the second slide rail and the third slide rail, a grinding mechanism fixed on the upper surface of the base, a peeling knife group fixed on the upper surface of the base and located between the grinding mechanism and the paper tube lifting mechanism, a second power mechanism connected to the bottom of the base for driving it to slide, and a cover installed on the upper surface of the base and covering the grinding mechanism and the peeling knife group; a dust collection assembly, which is connected to the cover and is used to collect dust generated by the grinding assembly. In this way, the paper tube can be automatically clamped, the surface layer removed, and the peeled paper tube can be polished smooth.

[0005] However, the inventors found that the device has the following problems: the inner wall of the paper tube is not polished, and the paper tube is fixed by inserting the plug connectors on both sides into the paper tube, which easily expands the ports on both sides of the paper tube and damages the overall quality. Summary of the invention

[0006] The purpose of the present invention is to address the deficiencies in the prior art and to invent a high-efficiency grinding device for processing paper runner tubes. The feeding component pushes the paper tube onto a supporting column on which an airbag is arranged. The airbag inflates to drive the paper tube to rotate while grinding the outer wall of the paper tube through an external grinding component. After the airbag retracts, the inner grinding belt extends out to resist the inner wall of the paper tube, and the paper tube is clamped by a clamping component. The support column rotates while driving the inner grinding belt to rotate to grind the inner wall of the paper tube, thereby solving the problem of lack of grinding of the inner wall of the paper tube, and fixing the paper tube by inserting the plug connectors on both sides of the paper tube, which easily enlarges the ports on both sides of the paper tube and damages the overall quality.

[0007] In view of the above technical problems, the technical solution adopted by the present invention is as follows: a high-efficiency grinding device for processing paper runner tubes, including a chassis, a feeding assembly, a supporting assembly, an external grinding assembly, a clamping assembly, and an internal grinding assembly, wherein the supporting assembly includes a supporting column rotatably arranged on the chassis and a piston rod slidably arranged in the supporting column, wherein the supporting column is connected to an external air pump and drives the piston rod to move while taking in air, an air bag is provided on the outside of the supporting column, the feeding assembly is used to push the paper tube onto the supporting column, the internal grinding assembly includes an internal grinding belt slidably arranged in the supporting column, and the The support column and the piston rod are both provided with air holes. When the piston rod moves, its own air holes coincide with the air holes of the support column so that the airbag is inflated to support the paper tube, and the outer wall of the paper tube is polished under the action of the external polishing component. When the air intake of the support column drives the piston rod to move, the inner polishing belt will drop away from the inner wall of the paper tube. On the contrary, when the piston rod is in the original position, the inner polishing belt is in contact with the inner wall of the paper tube. When the clamping component clamps the paper tube, the chassis drives the support column to rotate. The inner polishing belt rotates while the support column rotates, thereby polishing the inner wall of the paper tube.

[0008] As a preferred embodiment, the feeding assembly includes a threaded rod a rotatably set on the chassis and a push plate meshingly set on the threaded rod a, a feeding plate is arranged above the threaded rod a, the push plate is in the shape of a circular arc with the same diameter as the paper tube, a limiting rod is also arranged on the chassis, the push plate is also slidably set on the limiting rod, the feeding plate is hollow in the middle part, a limiting block is arranged on the limiting rod, and the threaded rod a is rotatably set on the limiting block.

[0009] As a preferred embodiment, the external grinding assembly includes a threaded rod b rotatably set on the chassis and a pushing plate meshing with the threaded rod b, the threaded rod b is rotatably set on the limit block, and the pushing plate is also slidably set on the limit rod, and sliding grooves a are opened on both sides of the pushing plate, a fixed rod a is set in the sliding groove a, and a sliding rod a is slidably set on the fixed rod a, a support frame is set between the sliding rods a on both sides, an external grinding belt is sleeved on the support frame, and a motor for driving the external grinding belt to rotate is set on the support frame.

[0010] As a preferred embodiment, the clamping assembly includes a cylinder arranged at the bottom of the chassis and a bidirectional cylinder arranged on the cylinder output shaft, lifting rods are arranged on the output shafts on both sides of the bidirectional cylinder, a support rod is slidably arranged at the bottom of the chassis, the lifting rod is slidably arranged in the support rod, a splint is arranged on the lifting rod, the splint is in an arc shape and has the same outer diameter as the paper tube, a plurality of adsorption holes are opened on the surface of the splint, and the lifting rod is connected to the suction pump to drive the adsorption holes to adsorb the paper tube.

[0011] As a preferred embodiment, a slideway is provided in the support column, and slide grooves b are provided on both sides of the slideway. A fixed rod b is provided on the slide groove b, and a slide rod b is slidably provided on the fixed rod b. Two rotating shafts are rotatably provided on the slide rod b, and the inner grinding belt is sleeved on the rotating shaft. A push block is provided on the side of the piston rod, and the contact surface between the slide rod b and the push block is set to an inclined surface, and a spring a sleeved on the fixed rod b is provided between the slide rod b and the slide groove b.

[0012] As a preferred embodiment, a gear connected to a rotating shaft is arranged on a fixing rod b close to a side of the chassis, and a gear ring driving the gear to rotate is arranged on a wall surface of the chassis.

[0013] As a preference, slide rails are arranged on both sides of the push plate, the slide rod a is slidably arranged on the surface of the slide rails, and a spring sleeved on the fixed rod a is arranged between the slide groove a and the slide rod a.

[0014] As a preference, a spring b is provided between the piston rod and the support column.

[0015] As a preference, the adsorption holes are arranged obliquely, and the inclination angle is arranged to be opposite to the rotation direction of the support column.

[0016] As a preference, the height of the loading plate is set to be coaxial with the supporting column.

[0017] Beneficial effects of the present invention: 1. When the threaded rod b rotates and drives the push plate 32 to move, the slide rod a rises under the action of the slide rail, thereby driving the outer grinding belt to rise and press against the outer wall of the paper tube, so that the outer grinding belt fits closely with the outer wall of the paper tube, thereby improving the grinding efficiency.

[0018] 2. After the airbag is evacuated, the piston rod is reset under the action of the spring and drives the fixed rod b to rise through the inclined surface, thereby driving the inner grinding belt to rise and press against the inner wall of the paper tube and make the gear mesh with the gear ring. The paper tube is clamped and fixed by the splint. During the rotation of the inner grinding belt with the support column, the gear ring and the gear drive the inner grinding belt to rotate by itself, thereby grinding the inner wall of the paper tube.

[0019] 3. While the splint clamps and fixes the paper tube, the lifting rod is connected to an external suction pump. The adsorption holes are set at an angle and opposite to the rotation direction of the paper tube. During the clamping process of the splint, an adsorption force opposite to the rotation direction is generated through the adsorption holes, which can prevent the paper tube from deviating during the clamping process and affect the grinding efficiency.

[0020] In summary, the equipment has the advantages of high grinding efficiency, uniform grinding, high stability of the grinding process, etc., and is particularly suitable for the technical field of runner tube production equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of a high-efficiency grinding device for processing paper runner tubes; Figure 2 It is a structural schematic diagram of a feeding assembly of a high-efficiency grinding device for processing paper runner tubes; Figure 3 It is a structural schematic diagram of an outer grinding component of a high-efficiency grinding device for processing paper runner tubes; Figure 4 It is a structural schematic diagram of a clamping assembly of a high-efficiency grinding device for processing paper runner tubes; Figure 5 It is a structural schematic diagram of a support assembly of a high-efficiency grinding device for processing paper runner tubes; Figure 6 for Figure 5 A partial enlarged view of the middle A; Figure 7 It is a cross-sectional view of a grinding component in a high-efficiency grinding device for processing a paper runner tube; Figure 8 for Figure 7 A partial enlarged view of point B in the middle; Fig. 9 A cross-sectional view of a support assembly of a high-efficiency grinding device for processing a paper runner tube; Fig.10 A cross-sectional view of an outer grinding component of a high-efficiency grinding device for processing a paper runner tube; Fig.11 for Fig.10 A partial enlarged view of point C in the middle.

[0023] Figures: 1. Chassis; 2. Feeding assembly; 3. Support assembly; 4. External grinding assembly; 5. Clamping assembly; 6. Internal grinding assembly; 7. Support column; 8. Piston rod; 9. Air bag; 10. Internal grinding belt; 11. Air hole; 21. Threaded rod a; 22. Push plate; 23. Feeding plate; 24. Limit rod; 25. Limit block; 31. Threaded rod b; 32. Push plate; 33. Slideway a; 34. Fixed rod a; 35. Sliding rod b; 36. Support frame; 37. External grinding belt; 38. Motor; 41. Cylinder; 42. Bidirectional cylinder; 43. Support rod; 44. Lifting rod; 45. Clamp; 46. Adsorption hole; 51. Slideway; 52. Slideway b; 53. Fixed rod b; 54. Rotating shaft; 55. Push block; 56. Sliding rod b; 57. Spring a; 61. Gear; 62. Gear ring; 81. Spring b. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings.

[0025] Embodiment 1

[0026] like Figures 1 to 11 As shown, a high-efficiency grinding device for processing paper runner tubes includes a chassis 1, a feeding component 2, a support component 3, an external grinding component 4, a clamping component 5, and an internal grinding component 6. The support component 3 includes a support column 7 rotatably arranged on the chassis 1 and a piston rod 8 slidably arranged in the support column 7. The support column 7 is connected to an external air pump and drives the piston rod 8 to move while inletting air. An air bag 9 is provided on the outside of the support column 7. The feeding component 2 is used to push the paper tube onto the support column 7. The internal grinding component 6 includes an internal grinding belt 10 slidably arranged in the support column 7. The support column 7 and the piston rod 8 are both An air hole 11 is provided, and when the piston rod 8 moves, its own air hole 11 overlaps with the air hole 11 of the support column 7, so that the airbag 9 is inflated to support the paper tube, and the outer wall of the paper tube is polished under the action of the external polishing component 4. When the support column 7 drives the piston rod 8 to move while the air intake causes the inner polishing belt 10 to drop away from the inner wall of the paper tube. On the contrary, when the piston rod 8 is in the original position, the inner polishing belt 10 is in contact with the inner wall of the paper tube. When the clamping component 5 clamps the paper tube, the chassis 1 drives the support column 7 to rotate, and the inner polishing belt 10 rotates while the support column 7 rotates, thereby polishing the inner wall of the paper tube.

[0027] like Figure 2As shown, the feeding assembly 2 includes a threaded rod a21 rotatably set on the chassis 1 and a push plate 22 meshingly set on the threaded rod a21, a feeding plate 23 is set above the threaded rod a21, the push plate 22 is in the shape of a circular arc with the same diameter as the paper tube, a limiting rod 24 is also set on the chassis 1, and the push plate 22 is also slidably set on the limiting rod 24, the feeding plate 23 is hollow in the middle, a limiting block 25 is set on the limiting rod 24, and the threaded rod a21 is rotatably set on the limiting block 25.

[0028] It is worth mentioning here that the threaded rod a21 is connected to the driving assembly in the chassis 1. After the paper tube falls into the loading plate 23, the driving assembly drives the threaded rod a21 to rotate, thereby driving the pushing plate 22 to move toward the support column 7. The paper tube is driven to move by the push plate 23 and the end surface of the paper tube, and the paper tube is put on the support column 7 from the hollow position of the loading plate 23. The hollow distance of the loading plate 23 is greater than the width of the push plate 22 to prevent interference between the push plate 22 and the loading plate 23 when feeding forward.

[0029] like Figure 3 , Fig.10 , Fig.11 As shown, the external grinding component 4 includes a threaded rod b31 rotatably set on the chassis 1 and a pushing plate 32 meshingly set on the threaded rod b31, the threaded rod b31 is rotatably set on the limit block 25, and the pushing plate 32 is also slidably set on the limit rod 24, and the pushing plate 32 has sliding grooves a33 on both sides, a fixed rod a34 is set in the sliding groove a33, and a sliding rod a35 is slidably set on the fixed rod a34, and a support frame 36 is set between the sliding rods a35 on both sides, and an external grinding belt 37 is sleeved on the support frame 36, and a motor 38 for driving the external grinding belt 37 to rotate is set on the support frame 36.

[0030] It is worth mentioning here that while the motor 38 drives the external grinding belt 37 to rotate, the driving assembly in the chassis drives the threaded rod b31 to rotate repeatedly, thereby driving the pushing plate 32 to move repeatedly, driving the external grinding belt 37 to grind the outer wall of the paper tube, replacing manual grinding and improving grinding efficiency.

[0031] like Figure 4 , Fig. 9As shown, the clamping assembly 5 includes a cylinder 41 arranged at the bottom of the chassis 1 and a bidirectional cylinder 42 arranged on the output shaft of the cylinder 41, and lifting rods 44 are arranged on the output shafts on both sides of the bidirectional cylinder 42. A support rod 43 is slidably arranged at the bottom of the chassis 1, and the lifting rod 44 is slidably arranged in the support rod 43. A clamping plate 45 is arranged on the lifting rod 44, and the clamping plate 45 is in an arc shape and has the same outer diameter as the paper tube. A plurality of adsorption holes 46 are opened on the surface of the clamping plate 45, and the lifting rod 44 is connected to the suction pump to drive the adsorption holes 46 to adsorb the paper tube.

[0032] It is worth mentioning here that the two-way cylinder 42 is driven to rise by the cylinder 41, and the clamping plate 45 is lifted to the same axial horizontal line as the paper tube by the lifting rod 44, and then the bottom support rod 43 is driven to slide toward the center by the two-way cylinder 42, and the clamping plates 45 on both sides clamp the paper tube accordingly, and then the suction hole 46 generates suction through the suction pump to adsorb and fix the paper tube for a second time.

[0033] like Figure 8 As shown, a slide 51 is provided in the support column 7, and slide grooves b52 are opened on both sides of the slide 51. A fixed rod b53 is provided on the slide groove b52, and a slide rod b56 is slidably provided on the fixed rod b53. Two rotating shafts 54 are rotatably provided on the slide rod b56. The inner grinding belt 10 is sleeved on the rotating shaft 54, and a push block 55 is provided on the side of the piston rod 8. The contact surface between the slide rod b56 and the push block 55 is set to an inclined surface, and a spring a57 sleeved on the fixed rod b53 is provided between the slide rod b56 and the slide groove b52.

[0034] It is worth mentioning here that the initial position of the inner grinding belt 10 is in contact with the inner wall surface of the paper tube. At this time, the push block 55 and the inclined surface of the slide bar b56 coincide with each other. When external grinding is required, air is blown into the piston rod 8 to inflate the airbag 9. Driven by the air pressure, the piston rod 8 moves the slide bar b56 away from the push block 55. At this time, the inclined surfaces of the two are staggered, and the slide bar b55 descends under the action of the spring a57 to retract the inner grinding belt 10 into the support column 7; conversely, when internal grinding is required, the air pump no longer inflates but instead extracts the air in the airbag 9. The piston rod 8 is reset under the action of the spring b81, thereby driving the slide bar b56 to rise through the inclined surface, so that the inner grinding belt 10 is in contact with the inner wall surface of the paper tube.

[0035] like Figure 6 As shown, a gear 61 connected to a rotating shaft is arranged on the fixing rod b53 close to one side of the chassis 1 , and a gear ring 62 driving the gear 61 to rotate is arranged on the wall surface of the chassis 1 .

[0036] It is worth mentioning here that the piston rod 8 drives the slide bar b55 to rise and drives the gear 61 to rise and engage with the gear ring 62. The support column 7 rotates and drives the gear 61 to rotate accordingly, thereby engaging with the gear ring 62 and driving the inner grinding belt 10 to rotate to grind the inner wall of the paper tube. It is worth mentioning that the initial state of the inner grinding belt 10 is to fit the inner wall surface of the paper tube. At this time, the 61 gear is engaged in the gear ring 61. After the driving assembly drives the support column 7 to rotate, the inner grinding belt 10 is always in a vertical state, so that the gear 61 disengages and rises again to engage with the gear ring 61 again.

[0037] like Figure 3 , Fig.11 As shown, slide rails 71 are arranged on both sides of the push plate 32, the slide rod a35 is slidably arranged on the surface of the slide rails 71, and a spring sleeved on the fixed rod a34 is arranged between the slide groove a33 and the slide rod a35.

[0038] It is worth mentioning here that after grinding is completed, the push plate 32 is reset, and the outer grinding belt is reset through the slide rod a35 under the action of the spring to avoid interference caused by the paper tube rubbing against the outer grinding belt during subsequent feeding.

[0039] like Figure 8 As shown, a spring b81 is provided between the piston rod 8 and the support column 7 .

[0040] It is worth mentioning here that when the spring b81's stiffness coefficient is set to inflate the support column 7, it can drive the spring b81 to compress and thus drive the piston rod 7 to move, and the spring b81's stiffness coefficient is greater than the spring a57's stiffness coefficient, so that the spring b81 can be reset and at the same time drive the spring a57 to compress.

[0041] like Fig. 9 As shown, the adsorption hole 46 is arranged at an inclination, and the inclination angle is arranged to be opposite to the rotation direction of the support column 7.

[0042] It is worth mentioning here that when the support column 7 drives the inner grinding belt 10 for internal grinding, the adsorption hole 46 is inclined in the opposite direction of the rotation direction of the support column 7, thereby generating a reaction suction force in the opposite direction of the rotation direction of the support column, which can fix the paper tube to the greatest extent and prevent the paper tube from shifting during the grinding process.

[0043] like Figure 1 As shown, the height of the loading plate 23 is set to be coaxial with the support column 7.

[0044] The working process is as follows:

[0045] After the paper tube falls into the loading plate 23, the driving assembly drives the threaded rod a21 to rotate, thereby driving the push plate 22 to move toward the support column 7, and the push plate 23 is engaged with the end surface of the paper tube to drive the paper tube to move, and the paper tube is sleeved on the support column 7 from the hollow position of the loading plate 23; Then, air is inflated into the support column 7, and the piston rod 8 moves so that the air hole 11 of the piston rod coincides with the air hole 11 of the support column 7, thereby inflating the airbag 9 so that the airbag 9 bulges to support the paper tube. While the piston rod 8 moves, the push block 55 moves away from the push block 55. At this time, the inclined surfaces of the two are staggered, and the slide bar b55 descends under the action of the spring a57 to retract the inner grinding belt 10 into the support column 7. The support column 7 drives the paper tube to rotate through the airbag 9. At this time, the motor 38 is started. While the motor 38 drives the outer grinding belt 37 to rotate, the driving component in the chassis drives the threaded rod b31 to rotate repeatedly, thereby driving the push plate 32 to move repeatedly to drive the outer surface of the paper tube to be polished back and forth; After the outer grinding of the paper tube is completed, the air pump sucks out the air in the airbag 9, and the piston rod 8 is reset under the action of the spring 81. At the same time, the slide bar b56 is driven to rise through the inclined surface, thereby driving the inner grinding belt 10 to rise and fit the inner wall of the paper tube. The two-way cylinder 42 is driven to rise through the cylinder 41, and then the bottom support rod 43 is driven to slide toward the center through the two-way cylinder 42. The clamping plates 45 on both sides then fit and clamp the paper tube. Then, the suction hole 46 is used to generate suction through the suction pump to adsorb and fix the paper tube for a second time. At this time, the support column 7 rotates and the paper tube is fixed. While the grinding belt 10 rotates with the support column 7, the gear ring 62 drives the gear 61 to rotate, thereby driving the inner grinding belt 10 to rotate and grind the inner wall of the paper tube. After the inner wall grinding is completed, the worker removes the paper tube and puts a new paper tube on for the next round of grinding.

[0046] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front and back", "left and right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the invention.

[0047] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0048] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical prompts of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A high-efficiency grinding device for processing paper runner tubes, comprising a chassis (1), a feeding assembly (2), a supporting assembly (3), an external grinding assembly (4), a clamping assembly (5), and an internal grinding assembly (6), characterized in that: The support assembly (3) comprises a support column (7) rotatably arranged on the chassis (1) and a piston rod (8) slidably arranged in the support column (7); the support column (7) is connected to an external air pump to drive the piston rod (8) to move while taking in air; an air bag (9) is sleeved on the outside of the support column (7); the feeding assembly (2) is used to push the paper tube onto the support column (7); the internal grinding assembly (6) comprises an internal grinding belt (10) slidably arranged in the support column (7); the support column (7) and the piston rod (8) are both provided with air holes (11); and the piston rod (8) moves so that its own air holes (11) are opened. 11) overlaps with the air hole (11) of the support column (7) so that the air bag (9) is inflated to support the paper tube, and the outer wall of the paper tube is polished under the action of the external polishing component (4). The air intake of the support column (7) drives the piston rod (8) to move, and at the same time, the inner polishing belt (10) is moved down away from the inner wall of the paper tube. On the contrary, when the piston rod (8) is in the original position, the inner polishing belt (10) is in contact with the inner wall of the paper tube. The clamping component (5) clamps the paper tube and the chassis (1) drives the support column (7) to rotate. The inner polishing belt (10) rotates while the support column (7) rotates, thereby polishing the inner wall of the paper tube.

2. The high-efficiency grinding device for processing paper runner tube according to claim 1, characterized in that: The feeding assembly (2) comprises a threaded rod a (21) rotatably mounted on the chassis (1) and a push plate (22) meshingly mounted on the threaded rod a (21); a feeding plate (23) is mounted above the threaded rod a (21); the push plate (22) is in an arc shape having the same diameter as the paper tube; a limit rod (24) is also mounted on the chassis (1); the push plate (22) is also slidably mounted on the limit rod (24); the feeding plate (23) is hollow in the middle; a limit block (25) is mounted on the limit rod (24); and the threaded rod a (21) is rotatably mounted on the limit block (25).

3. The high-efficiency grinding device for processing paper runner tube according to claim 2, characterized in that: The external grinding assembly (4) comprises a threaded rod b (31) rotatably mounted on the chassis (1) and a push plate (32) meshed with the threaded rod b (31); the threaded rod b (31) is rotatably mounted on a limit block (25); the push plate (32) is also slidably mounted on a limit rod (24); two sides of the push plate (32) are provided with slide grooves a (33); a fixed rod a (34) is disposed in the slide groove a (33); a slide rod a (35) is slidably mounted on the fixed rod a (34); a support frame (36) is disposed between the slide rods a (35) on both sides; an external grinding belt (37) is sleeved on the support frame (36); and a motor (38) is disposed on the support frame (36) for driving the external grinding belt (37) to rotate.

4. The high-efficiency grinding device for processing paper runner tube according to claim 1, characterized in that: The clamping assembly (5) comprises a cylinder (41) arranged at the bottom of the chassis (1) and a bidirectional cylinder (42) arranged on the output shaft of the cylinder (41); the output shafts on both sides of the bidirectional cylinder (42) are provided with lifting rods (44); a support rod (43) is slidably arranged at the bottom of the chassis (1); the lifting rod (44) is slidably arranged inside the support rod (43); a clamping plate (45) is arranged on the lifting rod (44); the clamping plate (45) is in an arc shape and has the same outer diameter as the paper tube; a plurality of adsorption holes (46) are provided on the surface of the clamping plate (45); the lifting rod (44) is connected to an air suction pump so as to drive the adsorption holes (46) to adsorb the paper tube.

5. The high-efficiency grinding device for processing paper runner tube according to claim 1, characterized in that: A slideway (51) is arranged in the support column (7), and slide grooves b (52) are provided on both sides of the slideway (51). A fixed rod b (53) is arranged on the slide groove b (52), and a slide rod b (56) is slidably arranged on the fixed rod b (53). Two rotating shafts (54) are rotatably arranged on the slide rod b (56), and the inner grinding belt (10) is sleeved on the rotating shaft (54). A push block (55) is arranged on the side of the piston rod (8), and the contact surface between the slide rod b (56) and the push block (55) is set to an inclined surface. A spring a (57) sleeved on the fixed rod b (53) is arranged between the slide rod b (56) and the slide groove b (52).

6. The high-efficiency grinding device for processing paper runner tube according to claim 5, characterized in that: A gear (61) connected to a rotating shaft is arranged on a fixed rod b (53) on one side close to the chassis (1), and a gear ring (62) driving the gear (61) to rotate is arranged on a wall surface of the chassis (1).

7. The high-efficiency grinding device for processing paper runner tube according to claim 3, characterized in that: Slide rails (71) are arranged on both sides of the push plate (32), the slide rod a (35) is slidably arranged on the surface of the slide rails (71), and a spring sleeved on the fixed rod a (34) is arranged between the slide groove a (33) and the slide rod a (35).

8. The high-efficiency grinding device for processing paper runner tube according to claim 5, characterized in that: A spring b (81) is provided between the piston rod (8) and the support column (7).

9. A high-efficiency grinding device for processing paper runner tubes according to claim 4, characterized in that: The adsorption hole (46) is arranged at an inclination, and the inclination angle is arranged to be opposite to the rotation direction of the support column (7).

10. The high-efficiency grinding device for processing paper runner tube according to claim 2, characterized in that: The height of the loading plate (23) is arranged to be coaxial with the support column (7).

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