Polishing device and method for surface machining of polishing stick of paper feeding shaft

Abstract

The invention discloses a polishing device for surface machining of a polishing stick of a paper feeding shaft in the technical field of shaft polishing equipment, and the polishing device comprises a support mechanism, the support mechanism is arranged between a polishing wheel and a guide wheel, the support mechanism is used for supporting the bottom of a workpiece, and the support mechanism can feed back the longitudinal feeding position of the workpiece; the feeding mechanism is arranged on the front side of the upper end of the second machine box, and the feeding mechanism can feed back the longitudinal feeding position, fed back by the support mechanism, of the workpiece in the polishing process when the workpiece is longitudinally fed out enough to contain a new workpiece. New workpieces are fed to the front side position between the polishing wheel and the guide wheel from the upper portion of the second machine box; new to-be-machined workpieces are provided between the grinding wheel and the guide wheel in time through the feeding mechanism, feeding of the workpieces is more coherent, the grinding wheel and the guide wheel can grind the multiple workpieces as many as possible at the same time, and furthermore, the working efficiency of the equipment is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of shaft grinding equipment, and specifically to a grinding device and method for the surface processing of a paper feed shaft polishing rod. Background Technique

[0002] The paper feed shaft provides driving force for the paper. Usually, it rotates closely against the paper, and provides driving force for the paper through the frictional force generated during the relative rotation with the paper. This requires a relatively high roundness and surface accuracy of the paper feed shaft. Therefore, the raw material for the production of the paper feed shaft is mostly a polishing rod with a relatively high roundness and surface accuracy. When the polishing rod is subjected to surface grinding treatment, an centerless grinder is mostly used for processing.

[0003] Working principle of the centerless grinder: The workpiece rotates on a bracket between a high-speed rotating grinding wheel and a low-speed rotating guide wheel. Among them, the grinding wheel grinds the workpiece, and the guide wheel makes the workpiece perform circular motion and drives the workpiece to perform axial feeding, and uses the rotation of the workpiece itself to control the grinding degree.

[0004] Therefore, during its use, the positions of the grinding wheel and the guide wheel do not change with the grinding degree of the workpiece. Further, it enables the centerless grinder to process multiple workpieces with different grinding states simultaneously during the processing (when the axial lengths of the grinding wheel and the guide wheel are sufficient).

[0005] In the prior art, during the use of the centerless grinder, most of the workpieces are placed into the grinder for grinding by manual feeding. This makes the feeding frequency of the workpiece vulnerable to human factors, the feeding process of the workpiece has poor continuity, and it is unable to effectively shorten the axial interval between adjacent workpieces. As a result, the processing space of the centerless grinder cannot be utilized efficiently, and the processing efficiency of the centerless grinder decreases. Summary of the Invention

[0006] The purpose of the present invention is to provide a grinding device and method for the surface processing of a paper feed shaft polishing rod, so as to solve the problem in the above background technique that in the prior art, during the use of the centerless grinder, most of the workpieces are placed into the grinder for grinding by manual feeding. This makes the feeding frequency of the workpiece vulnerable to human factors, the feeding process of the workpiece has poor continuity, and it is unable to effectively shorten the axial interval between adjacent workpieces. As a result, the processing space of the centerless grinder cannot be utilized efficiently, and the processing efficiency of the centerless grinder decreases.

[0007] To achieve the above object, the present invention provides the following technical solution: A grinding device for the surface processing of a paper feeding shaft polishing rod, comprising a fixing mechanism, a grinding wheel, a guide wheel, and a workpiece; on the upper end of the fixing mechanism, a first machine case and a second machine case are respectively fixedly connected to the left and right sides, the axial directions of the grinding wheel and the guide wheel are respectively arranged longitudinally in the first machine case and the second machine case, and further comprising a bracket mechanism, the bracket mechanism is arranged between the grinding wheel and the guide wheel, the bracket mechanism is used to provide support for the bottom of the workpiece, and the bracket mechanism can feedback the longitudinal feeding position of the workpiece;

[0008] A feeding mechanism, the feeding mechanism is arranged on the front side of the upper end of the second machine case, the feeding mechanism can, according to the longitudinal feeding position of the workpiece feedback by the bracket mechanism, when the workpiece in grinding longitudinally feeds out enough to accommodate a new workpiece, feed a new workpiece from above the second machine case to the front side position between the grinding wheel and the guide wheel.

[0009] Further, the bracket mechanism comprises a vertically arranged support plate, and the support plate is provided with a feedback mechanism and a buffer mechanism; the feedback mechanism is used to feedback the feeding position of the workpiece on the upper end of the support plate to the feeding mechanism; the buffer mechanism is used to reduce the impact on the workpiece during the feeding process of the feeding mechanism.

[0010] Further, the feeding mechanism comprises a material receiving hopper, the material receiving hopper is fixedly arranged above the second machine case, the bottom of the material receiving hopper is inclined downward to the left, the left end of the bottom of the material receiving hopper is fixedly connected with a feeding pipe communicated therewith, and the cross-sectional area of the feeding pipe can only accommodate a single workpiece to pass through; a separating mechanism is arranged at the lower end of the feeding pipe; the separating mechanism is used to prevent the workpiece in the feeding pipe from separating from the lower end of the feeding pipe, and can control the single workpiece at the lowermost part in the feeding pipe to separate from the feeding pipe and fall between the grinding wheel and the guide wheel.

[0011] Further, the support plate is longitudinally arranged and composed of a plurality of vertically arranged and independent support blocks, and a set of feedback mechanism and buffer mechanism are arranged at the lower end of each support block.

[0012] Further, the feedback mechanism comprises a mounting block, a limit pin is vertically slidably connected to the mounting block, the vertical extreme displacement of the limit pin relative to the mounting block in the up and down direction is fixed, the upper end of the limit pin is fixedly connected to the lower end of the support block, a spring sleeved on the outer wall of the limit pin is fixedly connected between the support block and the mounting block, and a displacement sensor is externally connected to the limit pin; the buffer mechanism is arranged at the lower end of the mounting block.

[0013] Further, the buffer mechanism comprises a first telescopic motor, and the output shaft of the first telescopic motor is fixedly connected to the lower end of the mounting block.

[0014] Furthermore, the separation mechanism includes separation wheels that are symmetrically arranged front and back at the outlet below the discharge pipe, and the two separation wheels are each provided with three embedding grooves that are positioned identically and arranged in a circular array, the inner wall of the embedding groove fits with the outer wall of the workpiece, and the embedding groove can engage with the workpiece, the axes of the two separation wheels are commonly fixedly connected to a transmission shaft, the upper end of the second chassis is fixedly connected to a support frame, the support frame is used to support the transmission shaft, the support frame is fixedly connected to a drive motor, and the output shaft of the drive motor is transmission-connected to the transmission shaft.

[0015] Furthermore, the opposing surfaces of the two separation wheels are each provided with a first arc rod on the side of the embedding groove, and the side walls of the first arc rod are slidably connected with a second arc rod along the arc trajectory of the first arc rod, the radius of the arc trajectory of the first arc rod and the second arc rod are the same, and the inner walls of the first arc rod and the second arc rod are aligned with the corresponding inner walls of the embedding groove; the outer wall of the first arc rod is fixedly connected with a connecting block, the outer wall of the second arc rod is provided with teeth, the side wall of the connecting block is provided with a gear, and a motor is embedded in the connecting block, and the motor is used to drive the gear to rotate, and the gear The wheel is meshed with teeth on the outer wall of the second arc rod, and the gear is used to drive the second arc rod to slide along the first arc rod, so that the second arc rod extends or retracts the first arc rod; after the second arc rod extends out of the first arc rod, the total arc of the second arc rod and the first arc rod is greater than one hundred and eighty degrees; the connecting blocks are all provided with a telescopic mechanism, and the telescopic mechanism is used to drive the first arc rod to move away from the axis of the separation wheel along the radial direction of the separation wheel; the lower end of the discharge tube is fixedly connected with an arc baffle, and when the mounting groove passes through the arc baffle, the arc baffle can prevent the workpiece in the mounting groove from escaping from the mounting groove.

[0016] Furthermore, the telescopic mechanism includes a second telescopic motor, the output shaft of the second telescopic motor is fixedly connected to the corresponding connecting block, and the output shaft of the second telescopic motor is telescopic in a radial direction of the separation wheel.

[0017] A grinding method for surface processing of a paper feed shaft polishing rod, the method is as follows:

[0018] S1. During the grinding process, the workpiece is placed between the grinding wheel and the guide wheel from the front end position between the grinding wheel and the guide wheel for grinding;

[0019] S2. During the grinding process, the support mechanism feeds back the longitudinal feed position of the workpiece to the feeding mechanism;

[0020] S3. When the upper front side of the support mechanism can accommodate a new workpiece to be processed, the loading mechanism loads the new workpiece.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention provides new workpieces to be processed between the grinding wheel and the guide wheel in a timely manner through the feeding mechanism, so that the equipment can effectively control the spacing between multiple longitudinally arranged workpieces between the grinding wheel and the guide wheel, making the feeding of the workpieces more coherent, and enabling the grinding wheel and the guide wheel to grind as many workpieces as possible at the same time, further, effectively improving the working efficiency of the equipment.

[0023] 2. The present invention controls the vertical position of the support block - through the first telescopic motor, so that during the workpiece loading process, the support block - can be moved up to receive the material, thereby reducing the falling height of the workpiece from the loading mechanism during the workpiece loading process, thereby reducing the impact degree of the workpiece during the loading process and avoiding collision injuries during the workpiece loading process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the half-section structure of the feed pipe of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the present invention after removing the fixing mechanism, the first chassis, the second chassis, the material hopper, the material discharge pipe and the arc-shaped baffle;

[0027] Figure 4 for Figure 3 Schematic diagram of the cross-section structure;

[0028] Figure 5 for Figure 4 A schematic diagram of the structure enlargement in the middle;

[0029] Figure 6 for Figure 4 A magnified schematic diagram of the structure at B in the middle;

[0030] Figure 7 for Figure 4 A magnified schematic diagram of the structure at C in the middle;

[0031] Figure 8 for Figure 3 Schematic diagram of the left side after the grinding wheel is removed;

[0032] Figure 9 It is a schematic diagram of the process flow of the present invention. DETAILED DESCRIPTION

[0033] See also Figures 1 - 9, the present invention provides a technical solution: a grinding device for the surface processing of a paper feeding shaft polishing rod, including a fixing mechanism 1, a grinding wheel 2, a guide wheel 3 and a workpiece 6; on the upper end of the fixing mechanism 1, a first machine case 4 and a second machine case 5 are respectively fixedly connected to the left and right sides, the axial directions of the grinding wheel 2 and the guide wheel 3 are respectively arranged longitudinally in the first machine case 4 and the second machine case 5, and a bracket mechanism is further included, the bracket mechanism is arranged between the grinding wheel 2 and the guide wheel 3, the bracket mechanism is used to provide support for the bottom of the workpiece 6, and the bracket mechanism can feedback the longitudinal feeding position of the workpiece 6.

[0034] A feeding mechanism, the feeding mechanism is arranged on the front side of the upper end of the second machine case 5, and the feeding mechanism can, according to the longitudinal feeding position of the workpiece 6 feedback by the bracket mechanism, when the longitudinal feeding of the workpiece 6 in the grinding process is sufficient to accommodate a new workpiece 6, feed a new workpiece 6 from above the second machine case 5 to the front side position between the grinding wheel 2 and the guide wheel 3.

[0035] During the grinding process, the workpiece 6 is placed between the front end positions of the grinding wheel 2 and the guide wheel 3 for grinding. During the grinding process, the workpiece 6 longitudinally feeds backward along the bracket mechanism. During this process, the bracket mechanism feedbacks the longitudinal feeding position of the workpiece 6 to the feeding mechanism. When the longitudinal feeding length of the workpiece 6 is greater than the length of the workpiece 6 and a new workpiece 6 to be processed can be accommodated in the front side above the bracket mechanism, the feeding mechanism feeds a new workpiece 6 from above the second machine case 5 to the front side position between the grinding wheel 2 and the guide wheel 3; further, during the continuous grinding process, multiple workpieces 6 with controllable longitudinal spacing can be longitudinally arranged between the grinding wheel 2 and the guide wheel 3; enabling the grinding wheel 2 and the guide wheel 3 to simultaneously grind as many workpieces 6 as possible at the same time. Further, the working efficiency of the equipment is effectively improved.

[0036] The present invention timely provides a new workpiece 6 to be processed between the grinding wheel 2 and the guide wheel 3 through the feeding mechanism, effectively controls the spacing between multiple longitudinally arranged workpieces 6 between the grinding wheel 2 and the guide wheel 3, makes the feeding of the workpiece 6 more coherent, enables the grinding wheel 2 and the guide wheel 3 to simultaneously grind as many workpieces 6 as possible at the same time. Further, the working efficiency of the equipment is effectively improved.

[0037] Further, the bracket mechanism includes a vertically arranged support plate 7, and the support plate 7 is provided with a feedback mechanism and a buffer mechanism; the feedback mechanism is used to feedback the feeding position of the workpiece 6 on the upper end of the support plate 7 to the feeding mechanism; the buffer mechanism is used to reduce the impact on the workpiece 6 during the feeding process of the feeding mechanism.

[0038] Further, the feeding mechanism includes a material storage hopper 12 which is fixedly arranged above the second chassis 5. The bottom of the material storage hopper 12 is inclined downward to the left. The left end of the bottom of the material storage hopper 12 is fixedly connected with a feeding pipe 13 communicated therewith. The cross-sectional area of the feeding pipe 13 can only accommodate a single workpiece 6 to pass through. A separation mechanism is arranged at the lower end of the feeding pipe 13. The separation mechanism is used to prevent the workpiece 6 in the feeding pipe 13 from detaching from the lower end of the feeding pipe 13, and can control the single workpiece 6 at the lowermost part in the feeding pipe 13 to detach from the feeding pipe 13 and fall between the grinding wheel 2 and the guide wheel 3.

[0039] Put a plurality of workpieces 6 to be ground into the material storage hopper 12. Under the action of gravity, the workpieces 6 roll into the feeding pipe 13, are arranged neatly in the feeding pipe 13, and under the action of the separation mechanism, according to the feedback signal of the bracket mechanism, control the workpieces 6 to fall between the grinding wheel 2 and the guide wheel 3 one by one for feeding.

[0040] Further, the support plate 7 is longitudinally arranged and composed of a plurality of vertically arranged and independent support blocks 7-1. A set of feedback mechanism and buffer mechanism are arranged at the lower end of each support block 7-1.

[0041] Further, the feedback mechanism includes a mounting block 8. The mounting block 8 is vertically and slidably connected with a limit pin 9. The vertical extreme displacement of the limit pin 9 in the up and down direction relative to the mounting block 8 is fixed. The upper end of the limit pin 9 is fixedly connected with the lower end of the support block 7-1. A spring 10 sleeved on the outer wall of the limit pin 9 is fixedly connected between the support block 7-1 and the mounting block 8. The limit pin 9 is externally connected with a displacement sensor. The buffer mechanism is arranged at the lower end of the mounting block 8.

[0042] When there is a workpiece 6 at the upper end of the support block 7-1, under the action of the gravity of the workpiece 6, the support block 7-1 moves downward relative to the mounting block 8 against the elastic force of the spring 10 and drives the limit pin 9 to move downward. Correspondingly, when the workpiece 6 existing at the upper end of the support block 7-1 leaves the upper end of the support block 7-1 by means of longitudinal feeding, the support block 7-1 drives the limit pin 9 to move vertically upward under the action of the elastic force of the spring 10. Thus, by judging the number of adjacent support blocks 7-1 moving downward by the displacement sensor and matching with the width of the support block 7-1, it can be judged whether the previous workpiece 6 moves longitudinally to provide a feeding position for the next workpiece 6.

[0043] Further, the buffer mechanism includes a first telescopic motor 11. The output shaft of the first telescopic motor 11 is fixedly connected with the lower end of the mounting block 8.

[0044] When the limit pin 9 moves downward, there is no workpiece 6 at the upper end of the support block 7-1 above the limit pin 9, and the support block 7-1 waits for a new workpiece 6 to fall in. At this time, the output shaft of the first telescopic motor 11 is controlled to extend upward through the feedback signal of the displacement sensor, so that the support block 7-1 moves upward, thereby reducing the vertical height from the upper end of the support block 7-1 to the loading mechanism, thereby reducing the falling height of the workpiece 6 from the loading mechanism during the loading process of the workpiece 6, thereby reducing the impact degree of the workpiece 6 during the loading process, and avoiding collision injuries of the workpiece 6 during the loading process.

[0045] The present invention controls the vertical position of the support block 7-1 through the first telescopic motor 11, so that during the loading process of the workpiece 6, the support block 7-1 can be moved up to receive the material, thereby reducing the falling height of the workpiece 6 from the loading mechanism during the loading process of the workpiece 6, thereby reducing the impact degree of the workpiece 6 during the loading process, and avoiding collision injuries of the workpiece 6 during the loading process.

[0046] Furthermore, the separation mechanism includes a separation wheel 14 which is symmetrically arranged at the outlet below the discharge pipe 13. The two separation wheels 14 are each provided with three embedding grooves 15 which are positioned identically and arranged in a circular array. The inner wall of the embedding groove 15 is in contact with the outer wall of the workpiece 6. The embedding groove 15 can be engaged with the workpiece 6. The axes of the two separation wheels 14 are commonly fixedly connected to a transmission shaft 16. A support frame 17 is fixedly connected to the upper end of the second chassis 5. The support frame 17 is used to support the transmission shaft 16. The support frame 17 is fixedly connected to a drive motor 18. The output shaft of the drive motor 18 is transmission-connected to the transmission shaft 16.

[0047] In the initial state, an embedding groove 15 on the separation wheel 14 is opposite to the outlet of the discharge pipe 13, and correspondingly, the lowest workpiece 6 in the discharge pipe 13 falls into the embedding groove 15. Then, when the discharge mechanism needs to discharge a workpiece 6, the driving motor 18 controls the separation wheel 14 to rotate clockwise, so that the next embedding groove 15 in the counterclockwise direction of the embedding groove 15 with the workpiece 6 engaged is opposite to the outlet of the discharge pipe 13. During the rotation, the embedding groove 15 takes the engaged workpiece 6 away from the discharge pipe 13. At the same time, when the next embedding groove 15 reaches the outlet position of the discharge pipe 13, the outlet of the discharge pipe 13 is blocked by the outer wall of the separation wheel 14, thereby preventing the workpiece 6 in the discharge pipe 13 from leaving the discharge pipe 13.

[0048] Furthermore, the opposing surfaces of the two separation wheels 14 are both provided with a first arc rod 19 on the side of the embedding groove 15, and the side walls of the first arc rod 19 are slidably connected with a second arc rod 20 along the arc trajectory of the first arc rod 19, the radius of the arc trajectory of the first arc rod 19 and the second arc rod 20 are the same, and the inner walls of the first arc rod 19 and the second arc rod 20 are aligned with the corresponding inner walls of the embedding groove 15; the outer wall of the first arc rod 19 is fixedly connected with a connecting block 21, the outer wall of the second arc rod 20 is provided with teeth, the side wall of the connecting block 21 is provided with a gear 22, and the connecting block 21 is embedded with a motor, and the motor is used to drive the gear 22 to rotate, and the gear 22 is aligned with the corresponding inner wall of the embedding groove 15. The teeth on the outer wall of the second arc rod 20 are meshed, and the gear 22 is used to drive the second arc rod 20 to slide along the first arc rod 19, so that the second arc rod 20 extends or retracts the first arc rod 19; after the second arc rod 20 extends out of the first arc rod 19, the total arc of the second arc rod 20 and the first arc rod 19 is greater than one hundred and eighty degrees; the connecting blocks 21 are all provided with a telescopic mechanism, and the telescopic mechanism is used to drive the first arc rod 19 radially away from the axis of the separation wheel 14 along the separation wheel 14; the lower end of the discharge tube 13 is fixedly connected with an arc baffle 23, and when the embedding groove 15 passes through the arc baffle 23, the arc baffle 23 can prevent the workpiece 6 in the embedding groove 15 from escaping from the embedding groove 15.

[0049] Furthermore, the telescopic mechanism includes a second telescopic motor 24 , the output shaft of the second telescopic motor 24 is fixedly connected to the corresponding connecting block 21 , and the output shaft of the second telescopic motor 24 is telescopically directed along the radial direction of the separation wheel 14 .

[0050] like Figure 3 When one embedding groove 15 faces the outlet of the feeding pipe 13, the opening of the lowest embedding groove 15 faces downward;

[0051] Assume that the outlet of the feeding pipe 13 is at position a, and the bottom of the separation wheel 14 is at position b;

[0052] When the embedding groove 15 rotates clockwise from position a to position b, the embedding groove 15 first passes through the arc baffle 23. Under the obstruction of the arc baffle 23, the workpiece 6 in the embedding groove 15 cannot escape from the arc baffle 23. During this process, the gear 22 rotates and drives the second arc rod 20 to extend the first arc rod 19, so that the first arc rod 19 and the second arc rod 20 together form an arc rod with an arc greater than 180 degrees, thereby clamping the workpiece 6; after the embedding groove 15 leaves the arc baffle 23, there are the following two implementation methods:

[0053] Embodiment 1: After the installation groove 15 moves to position b, the second telescopic motor 24 drives the first arc rod 19 and the second arc rod 20 to clamp the workpiece 6 and move it vertically downward, and the workpiece 6 is placed between the support mechanism and the guide wheel 3 to complete the blanking. Then, the gear 22 rotates and drives the second arc rod 20 to retract into the first arc rod 19, so that the workpiece 6 can be separated from the installation groove 15. Finally, the second telescopic motor 24 drives the first arc rod 19 and the second arc rod 20 to move upward and reset;

[0054] Embodiment 2: During the process of the installation groove 15 moving to position b, the second telescopic motor 24 drives the first arc rod 19 and the second arc rod 20 to move away from the axis of the separation wheel 14, so that the workpiece 6 clamped by the first arc rod 19 and the second arc rod 20 is in contact with the guide wheel 3. Then, during the process of the installation groove 15 moving to position b, the guide wheel 3 drives the workpiece 6 to rotate, reducing the rotational speed difference between the guide wheel 3 and the workpiece 6, and avoiding the sudden contact between the workpiece 6 and the guide wheel 3 in the blanking mode of Embodiment 1. Under the inertia generated by the rotational speed difference, the workpiece 6 is subjected to excessive impact, resulting in severe vibration and causing production risks.

[0055] A grinding method for the surface processing of a paper feed shaft polishing rod is as follows:

[0056] S1. During the grinding process, the workpiece 6 is placed between the grinding wheel 2 and the guide wheel 3 from the front end position between the grinding wheel 2 and the guide wheel 3 for grinding;

[0057] S2. During the grinding process, the support mechanism feeds back the longitudinal feeding position of the workpiece 6 to the feeding mechanism;

[0058] S3. When a new workpiece 6 to be processed can be accommodated in the front side above the support mechanism, the feeding mechanism feeds a new workpiece 6.

Claims

1. A grinding device for surface processing of a paper feed shaft polishing rod, comprising a fixing mechanism (1), a grinding wheel (2), a guide wheel (3) and a workpiece (6); the fixing mechanism (1) is fixedly connected to a first chassis (4) and a second chassis (5) on the left and right sides of the upper end thereof, respectively; the grinding wheel (2) and the guide wheel (3) are longitudinally arranged in the first chassis (4) and the second chassis (5) in the axial direction thereof, respectively; and the invention is characterized in that: It comprises a support mechanism, the support mechanism is arranged between the grinding wheel (2) and the guide wheel (3), the support mechanism is used to provide support for the bottom of the workpiece (6), and the support mechanism can feedback the longitudinal feed position of the workpiece (6); A loading mechanism is arranged on the front side of the upper end of the second chassis (5). The loading mechanism can feed the workpiece (6) being ground longitudinally to a position sufficient to accommodate a new workpiece (6) based on the longitudinal feeding position of the workpiece (6) fed back by the support mechanism, and then load the new workpiece (6) from the front side position between the grinding wheel (2) and the guide wheel (3) on the second chassis (5).

2. A grinding device for surface processing of a paper feed shaft polishing rod according to claim 1, characterized in that: The support mechanism comprises a vertically arranged support plate (7), wherein the support plate (7) is provided with a feedback mechanism and a buffer mechanism; the feedback mechanism is used to feedback the feeding position of the workpiece (6) at the upper end of the support plate (7) to the feeding mechanism; and the buffer mechanism is used to reduce the impact on the workpiece (6) during the feeding process of the feeding mechanism.

3. A grinding device for surface processing of a paper feed shaft polishing rod according to claim 1, characterized in that: The feeding mechanism comprises a hopper (12), the hopper (12) is fixedly arranged above the second chassis (5), the bottom of the hopper (12) is inclined to the lower left, the left end of the bottom of the hopper (12) is fixedly connected to a discharge pipe (13) connected thereto, the cross-sectional area of ​​the discharge pipe (13) can only accommodate a single workpiece (6) passing through; a separation mechanism is arranged at the lower end of the discharge pipe (13); the separation mechanism is used to prevent the workpiece (6) in the discharge pipe (13) from detaching from the discharge pipe (13) from the lower end of the discharge pipe (13), and can control the single workpiece (6) at the bottom of the discharge pipe (13) to detach from the discharge pipe (13) and fall between the grinding wheel (2) and the guide wheel (3).

4. A grinding device for surface processing of a paper feed shaft polishing rod according to claim 2, characterized in that: The support plate (7) is composed of a plurality of vertically arranged and mutually independent support blocks (7-1) arranged longitudinally, and a set of feedback mechanisms and buffer mechanisms is arranged at the lower end of each support block (7-1).

5. A grinding device for surface processing of a paper feed shaft polishing rod according to claim 4, characterized in that: The feedback mechanism comprises a mounting block (8), the mounting block (8) is vertically slidably connected to a limit pin (9), the limit pin (9) is fixed relative to the vertical limit displacement of the mounting block (8) in the up and down directions, the upper end of the limit pin (9) is fixedly connected to the lower end of the support block (7-1), a spring (10) sleeved on the outer wall of the limit pin (9) is fixedly connected between the support block (7-1) and the mounting block (8), and the limit pin (9) is externally connected to a displacement sensor; the buffer mechanism is arranged at the lower end of the mounting block (8).

6. A grinding device for surface processing of a paper feed shaft polishing rod according to claim 5, characterized in that: The buffer mechanism comprises a first telescopic motor (11), the output shaft of the first telescopic motor (11) being fixedly connected to the lower end of the mounting block (8).

7. A grinding device for surface processing of a paper feed shaft polishing rod according to claim 3, characterized in that: The separation mechanism comprises separation wheels (14) symmetrically arranged at the outlet below the feeding tube (13) in front and back directions, the two separation wheels (14) are each provided with three embedding grooves (15) which are positioned identically and arranged in a circular array, the inner wall of the embedding groove (15) is in contact with the outer wall of the workpiece (6), and the embedding groove (15) can be engaged with the workpiece (6), the axes of the two separation wheels (14) are commonly fixedly connected with a transmission shaft (16), the upper end of the second chassis (5) is fixedly connected with a support frame (17), the support frame (17) is used to support the transmission shaft (16), the support frame (17) is fixedly connected with a driving motor (18), and the output shaft of the driving motor (18) is drivingly connected with the transmission shaft (16).

8. A grinding device for surface processing of a paper feed shaft polishing rod according to claim 7, characterized in that: The opposing surfaces of the two separation wheels (14) are both provided with a first arc rod (19) on the side of the embedding groove (15); the side walls of the first arc rod (19) are slidably connected with a second arc rod (20) along the arc track of the first arc rod (19); the radius of the arc track of the first arc rod (19) and the second arc rod (20) are the same; the inner walls of the first arc rod (19) and the second arc rod (20) are aligned with the inner walls of the corresponding embedding groove (15); the outer wall of the first arc rod (19) is fixedly connected with a connecting block (21); the outer wall of the second arc rod (20) is provided with teeth; the side wall of the connecting block (21) is provided with a gear (22); a motor is embedded in the connecting block (21); the motor is used to drive the gear (22) to rotate; the gear (22) and the second arc rod ( The teeth of the outer wall of the second arc rod (20) are meshed, and the gear (22) is used to drive the second arc rod (20) to slide along the first arc rod (19), so that the second arc rod (20) extends out of or retracts the first arc rod (19); after the second arc rod (20) extends out of the first arc rod (19), the total arc of the second arc rod (20) and the first arc rod (19) is greater than one hundred and eighty degrees; the connecting blocks (21) are all provided with a telescopic mechanism, and the telescopic mechanism is used to drive the first arc rod (19) to move away from the axis of the separation wheel (14) along the radial direction of the separation wheel (14); the lower end of the discharge tube (13) is fixedly connected with an arc baffle (23), and when the embedding groove (15) passes through the arc baffle (23), the arc baffle (23) can prevent the workpiece (6) in the embedding groove (15) from escaping from the embedding groove (15).

9. A grinding device for surface processing of a paper feed shaft polishing rod according to claim 8, characterized in that: The telescopic mechanism comprises a second telescopic motor (24), the output shaft of the second telescopic motor (24) being fixedly connected to the corresponding connecting block (21), and the output shaft of the second telescopic motor (24) being telescopic in a radial direction along the separation wheel (14).

10. A grinding method for surface processing of a paper feed shaft polishing rod, applicable to a grinding device for surface processing of a paper feed shaft polishing rod according to claims 1-9, characterized in that: The method is as follows: S1, during the grinding process, the workpiece (6) is placed between the grinding wheel (2) and the guide wheel (3) from the front end position between the grinding wheel (2) and the guide wheel (3) for grinding; S2. During the grinding process, the support mechanism feeds back the longitudinal feed position of the workpiece (6) to the feeding mechanism; S3. When the upper front side of the support mechanism is able to accommodate a new workpiece (6) to be processed, the loading mechanism loads the new workpiece (6).

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