Knife sharpening buffering structure
By setting adjustable limit blocks and buffer springs in the cutting table's sharpening buffer structure, combined with a hollow sand column and split shaft design, the problem of unadjustable sharpening pressure and buffer pressure in the existing technology is solved, flexible adaptation of the sharpening pressure and pressure recovery after long-term use are achieved, and the sharpening effect is improved.
Patent Information
- Application Number
- CN202422845091.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-11-21
AI Technical Summary
The buffer pressure and sharpening pressure of the existing cutting table's sharpening buffer mechanism cannot be adjusted, and the adaptability is poor. Moreover, after long-term use, the elasticity deteriorates, affecting the sharpening effect.
A knife sharpening buffer structure is designed. A buffer spring is set between the mounting plate three and the limit block. The limit block can adjust its relative position with the mounting plate three to adjust the elastic force of the buffer spring. Combined with the hollow structure of the sand column and the split upper and lower shaft design, the buffer pressure and the knife sharpening pressure can be adjusted, and the buffer pressure can be increased again after long-term use.
The flexible adjustment of the sharpening pressure and the buffer pressure is realized, the adaptability is good, and the buffer pressure can be increased again after the spring elastic force becomes worse, so as to ensure the stable sharpening effect.
Smart Images
Figure CN223383275U_ABST
Abstract
Description
Technical field:
[0001] The utility model belongs to the technical field of cutting machines, in particular to a knife sharpening buffer structure. Background technology:
[0002] Currently, there are three methods for sharpening cutting tools: sanding column sharpening, grinding wheel sharpening, and abrasive belt sharpening. Sanding column sharpening offers superior results compared to other methods. However, most sanding column sharpening systems utilize a pneumatic cylinder with a rubber pad for cushioning. These methods have the following drawbacks: The cushioning pressure and sharpening pressure cannot be adjusted, resulting in poor adaptability. Furthermore, after prolonged use, the elasticity of the rubber pad deteriorates, affecting both the cushioning and sharpening pressures, and consequently, the sharpening effect. Summary of the invention:
[0003] The purpose of the utility model is to provide a knife sharpening buffer structure, whose buffer pressure and sharpening pressure are adjustable, can adapt to different knife sharpening pressure requirements, has good adaptability, and when the elastic force of the buffer spring deteriorates after long-term use and the buffer pressure becomes smaller, the buffer pressure can be increased again, and the knife sharpening effect is good.
[0004] The utility model is achieved in that:
[0005] A knife sharpening buffer structure comprises a fixed seat and a mounting seat slidably mounted on the fixed seat by a cylinder, the mounting seat is provided with a sand column driven to rotate by a power device, the mounting seat is provided with a mounting plate 1 and a mounting plate 2, a mounting plate 3 is slidably mounted between the mounting plate 1 and the mounting plate 2, the mounting plate 3 is connected to the piston rod of the cylinder, an adjustable limit block is provided on the mounting plate 2, a buffer spring is provided between the mounting plate 3 and the limit block, and when the buffer spring force needs to be adjusted, the relative position of the limit block and the mounting plate 3 is adjusted.
[0006] In the above-mentioned knife sharpening buffer structure, the installation structure of the limit block can be: a spring guide rod is provided on the limit block, the buffer spring is sleeved on the spring guide rod, the rod of the adjusting bolt passes through the mounting plate 1 and is screwed to the spring guide rod, and the mounting plate 1 is provided with a fixing screw that is tightened on the rod of the adjusting bolt.
[0007] In the above-mentioned knife sharpening buffer structure, the spring guide rod is provided with a threaded hole adapted to the rod portion of the adjusting bolt.
[0008] In the above-mentioned knife sharpening buffer structure, the installation structure of the limit block can also be: the limit block is threadedly connected to the second mounting plate. When it is necessary to adjust the elastic force of the buffer spring, the limit block is rotated to adjust the relative position of the limit block and the third mounting plate; when the elastic force of the buffer spring is adjusted, the limit block is screwed onto the second mounting plate and fixed relative to the second mounting plate.
[0009] In the above-mentioned knife sharpening buffer structure, a shock-absorbing pad sleeved on the spring guide rod is provided between the first mounting plate and the third mounting plate.
[0010] In the above-mentioned knife sharpening buffer structure, a guide rod is provided between the mounting plate one and the mounting plate two, the mounting plate three is slidably mounted on the guide rod, a mounting block is provided on the side of the mounting plate three close to the mounting plate two, a linear bearing sleeved on the guide rod is provided between the mounting block and the guide rod, and a shock-absorbing block sleeved on the guide rod is provided between the mounting block and the mounting plate three.
[0011] In the above-mentioned knife sharpening buffer structure, two guide rods are provided and are respectively located on the upper and lower sides of the spring guide rod.
[0012] In the above-mentioned knife sharpening buffer structure, a guide rail is provided on the fixed seat, a slider is slidably provided on the guide rail, the mounting seat is mounted on the slider, and the cylinder is a guide rod-less cylinder mounted on the fixed seat.
[0013] In the above-mentioned knife sharpening buffer structure, the power device is a motor installed on the mounting seat, the rotating shaft of the motor drives the sand column through a synchronous belt, the slider is located between the fixing seat and the motor, and the cylinder is located below the slider.
[0014] In the above-mentioned knife sharpening buffer structure, two sand columns are provided, and each is connected to the rotating shaft of the motor through its own synchronous belt.
[0015] In the above-mentioned knife sharpening buffer structure, the buffer spring is a low-rigidity spring.
[0016] In the above-mentioned knife sharpening buffer structure, the sand column is a hollow structure, the upper end of the sand column is rotatably connected to the upper shaft, and the lower end is rotatably connected to the lower shaft. The length of the upper shaft extending into the sand column and the length of the lower shaft extending into the sand column are both less than 1 / 2 of the height of the sand column. The upper shaft is installed on a mounting seat, and a mounting plate four located below the sand column is detachably connected to the mounting seat. The lower shaft is installed on the mounting plate four, and the sand column is axially limited on the upper shaft by a locking screw.
[0017] In the above-mentioned knife sharpening buffer structure, the length of the upper shaft extending into the sand column and the length of the lower shaft extending into the sand column are both less than 1 / 8 of the height of the sand column.
[0018] In the above-mentioned knife sharpening buffer structure, the upper end of the sand column is rotatably connected to the upper shaft through the upper bearing, and the lower end is rotatably connected to the lower shaft through the lower bearing. The sand column is tightly fitted with the outer ring of the upper bearing, and the locking screw is provided with a gasket for lower limiting the upper bearing. The rod of the locking screw passes through the gasket and is threadedly connected to the upper shaft.
[0019] In the above-mentioned knife sharpening buffer structure, the mounting seat includes a mounting plate five, a connecting member one and a connecting member two, the mounting plate five is connected to the slider through the connecting member one, the mounting plate five is connected to the mounting plate four through the connecting member two, the upper shaft and the motor are both mounted on the mounting plate five, and the mounting plate one and the mounting plate two are arranged on the connecting member one.
[0020] In the above-mentioned knife sharpening buffer structure, the third mounting plate is connected to the piston rod of the cylinder via a third connecting member.
[0021] The outstanding advantages of the utility model compared with the prior art are:
[0022] 1. The buffer spring of the utility model is arranged between the mounting plate three and the limit block. The limit block can move relative to the mounting plate two. The elastic force of the buffer spring can be adjusted by adjusting the relative position of the limit block and the mounting plate three, that is, the buffer pressure and the sharpening pressure can be adjusted. It can adapt to different sharpening pressure requirements and has good adaptability. When the elastic force of the buffer spring deteriorates after long-term use and the buffer pressure becomes smaller, the buffer pressure can be increased again, and the sharpening effect is good.
[0023] 2. The sand column of the present invention is a hollow structure. The upper end of the sand column is rotatably connected to the upper shaft, and the lower end is rotatably connected to the lower shaft. The length of the upper shaft extending into the sand column and the length of the lower shaft extending into the sand column are both less than 1 / 2 of the height of the sand column. The upper shaft is mounted on a mounting seat, and a mounting plate four located below the sand column is detachably connected to the mounting seat. The lower shaft is mounted on the mounting plate four. The sand column is axially limited on the upper shaft by a locking screw. The upper and lower shafts of the present invention are split structures, which are convenient for disassembly and assembly; and the upper and lower space requirements are small when disassembling the sand column;
[0024] 3. The slider of the utility model is located between the mounting base and the motor, and the cylinder is located below the slider, which has a compact layout, rationally utilizes space, and effectively saves occupied space. Description of the drawings:
[0025] Figure 1 This is a three-dimensional Figure 1 ;
[0026] Figure 2 This is a three-dimensional Figure 2 ;
[0027] Figure 3 It is a partial cross-sectional view of the sand column, mounting seat and mounting plate 4 of the present invention.
[0028] 1. Mounting plate 1; 2. Cylinder; 3. Mounting plate 4; 4. Sand column; 5. Mounting plate 1; 6. Mounting plate 2; 7. Mounting plate 3; 8. Limit block; 9. Buffer spring; 10. Spring guide rod; 11. Adjusting bolt; 12. Set screw; 13. Shock-absorbing pad; 14. Guide rod; 15. Mounting block; 16. Shock-absorbing block; 17. Guide rail; 18. Slider; 19. Motor; 20. Upper shaft; 21. Lower shaft; 22. Mounting plate 4; 23. Locking screw; 24. Upper bearing; 25. Lower bearing; 26. Gasket; 27. Connector 3; 28. Cutting knife. Specific implementation method:
[0029] The present invention is further described below with reference to specific embodiments. Figure 1 —3:
[0030] A knife sharpening buffer structure comprises a fixed seat 1 and a mounting seat 3 which is slidably mounted on the fixed seat 1 and driven by a cylinder 2, the mounting seat 3 being provided with a sand column 4 which is driven to rotate by a power device, the mounting seat 3 being provided with a mounting plate 1 5 and a mounting plate 2 6, a mounting plate 3 slidably mounted between the mounting plate 1 5 and the mounting plate 2 6, the mounting plate 3 7 being connected to the piston rod of the cylinder 2, an adjustable limit block 8 being provided on the mounting plate 2 6, a buffer spring 9 being provided between the mounting plate 3 7 and the limit block 8, and when it is necessary to adjust the elastic force of the buffer spring 9, the relative position of the limit block 8 and the mounting plate 3 7 is adjusted.
[0031] The working principle of this utility model is as follows: Figure 1-3 As shown, the piston rod of the cylinder 2 is pushed out, driving the mounting plate three 7 to move toward the side of the cutter 28, compressing the buffer spring 9, until it drives the mounting plate two 6 to move toward the side of the cutter 28, and then drives the mounting seat 3 and the sand column 4 to move toward the cutter 28, and the power device drives the sand column 4 to rotate to grind the cutter 28; the piston rod of the cylinder 2 retracts, driving the mounting plate three 7 to move to the side away from the cutter 28, releasing the buffer spring 9, until the mounting plate three 7 contacts the mounting plate one 5, driving the mounting plate one 5 to move to the side away from the cutter 28, and then driving the mounting seat 3 and the sand column 4 to move to the side away from the cutter 28.
[0032] When the buffer pressure is less than the standard value, the limit block 8 moves toward the side of the mounting plate three 7, compressing the buffer spring 9 and increasing the preload force of the buffer spring 9; after adjusting the buffer pressure, the limit block 8 is fixed relative to the mounting plate two 6, increasing the elastic force of the buffer spring 9, that is, increasing the buffer pressure.
[0033] When the buffer pressure is greater than the standard value, the limit block 8 moves to the side away from the mounting plate three 7, loosening the buffer spring 9 and reducing the preload force of the buffer spring 9; after adjusting the buffer pressure, the limit block 8 is fixed relative to the mounting plate two 6, reducing the elastic force of the buffer spring 9, that is, reducing the buffer pressure.
[0034] The buffer spring 9 of the present invention is arranged between the mounting plate three 7 and the limit block 8. The limit block 8 can move relative to the mounting plate two 6. The elastic force of the buffer spring 9 can be adjusted by adjusting the relative position of the limit block 8 and the mounting plate three 7, that is, the buffer pressure and the sharpening pressure can be adjusted. It can adapt to different sharpening pressure requirements and has good adaptability. When the elastic force of the buffer spring 9 deteriorates after long-term use and the buffer pressure becomes smaller, the buffer pressure can be increased again, and the sharpening effect is good.
[0035] The specific installation structure of the limit block 8: Figure 1 、 2 As shown, the stop block 8 is provided with a spring guide rod 10, onto which the buffer spring 9 is mounted. The stem of the adjusting bolt 11 passes through the mounting plate 15 and is threadedly connected to the spring guide rod 10. The mounting plate 15 is provided with a set screw 12, which is tightened onto the stem of the adjusting bolt 11. The head of the adjusting bolt 11 abuts against the mounting plate 15 to limit the position. To adjust the elastic force of the buffer spring 9, loosen the set screw 12, hold the stop block 8 with the right hand, and rotate the head of the adjusting bolt 11 with the left hand to adjust the relative position of the stop block 8 relative to the adjusting bolt 11, that is, the relative position of the stop block 8 and the mounting plate 3 7. Once the elastic force of the buffer spring 9 is adjusted, tighten the set screw 12, secure the adjusting bolt 11 to the mounting plate 15, and thus secure the stop block 8 relative to the mounting plate 2 6. The simple structure facilitates installation and adjustment.
[0036] In order to facilitate fixing the limit block 8 when rotating the adjusting bolt 11, the outer side wall of the limit block 8 includes two mutually parallel planes and an arc surface connecting the two planes. When rotating the adjusting bolt 11, the wrench can clamp the two planes of the limit block 8.
[0037] Furthermore, the spring guide rod 10 is provided with a threaded hole adapted to the rod of the adjusting bolt 11 .
[0038] In order to reduce the vibration generated when the mounting plate three 7 contacts the mounting plate one 5 , a shock-absorbing pad 13 sleeved on the spring guide rod 10 is provided between the mounting plate one 5 and the mounting plate three 7 .
[0039] In order to guide the movement of the mounting plate three 7 and reduce the vibration between the mounting plate three 7 and the mounting plate two 6, a guide rod 14 is provided between the mounting plate one 5 and the mounting plate two 6, and the mounting plate three 7 is slidably arranged on the guide rod 14. A mounting block 15 is provided on the side of the mounting plate three 7 close to the mounting plate two 6, and a linear bearing mounted on the guide rod 14 is provided between the mounting block 15 and the guide rod 14, and a shock-absorbing block 16 mounted on the guide rod 14 is provided between the mounting block 15 and the mounting plate three 7.
[0040] Preferably, two guide rods 14 are provided, and are respectively located on the upper and lower sides of the spring guide rod 10 .
[0041] In order to guide the movement of the mounting seat 3, as Figure 1 、 2 As shown, the fixing seat 1 is provided with a guide rail 17, the guide rail 17 is slidably provided with a slider 18, the mounting seat 3 is installed on the slider 18, and the cylinder 2 is a guide rodless cylinder installed on the fixing seat 1, which effectively avoids the situation where the cylinder 2 does not run smoothly due to part processing errors.
[0042] The power unit consists of a motor 19 mounted on a mounting base 3. The motor 19's rotating shaft drives the sand column 4 via a synchronous belt. The slider 18 is located between the mounting base 1 and the motor 19, and the cylinder 2 is located below the slider 18. In this embodiment, the synchronous belt is a round belt. This compact layout makes rational use of space and effectively saves space.
[0043] Furthermore, two sand columns 4 are provided, and each is connected to the rotating shaft of the motor 19 through its own synchronous belt.
[0044] Preferably, the buffer spring 9 is a low-rigidity spring, which can reduce the situation where the sharpening buffer force changes greatly due to the wear of the cutting knife 28 during sharpening.
[0045] Furthermore, if Figure 3 As shown, the sand column 4 is a hollow structure. The upper end of the sand column 4 is rotatably connected to the upper shaft 20, and the lower end is rotatably connected to the lower shaft 21. The length of the upper shaft 20 extending into the sand column 4 and the length of the lower shaft 21 extending into the sand column 4 are both less than 1 / 2 of the height of the sand column 4. The upper shaft 20 is mounted on the mounting seat 3. The mounting seat 3 is detachably connected to a mounting plate 22 located below the sand column 4. The lower shaft 21 is mounted on the mounting plate 22. The sand column 4 is axially limited on the upper shaft 20 by a locking screw 23. When the sand column 4 needs to be replaced, the mounting plate 22 and the lower shaft 21 are first removed, then the locking screw 23 is removed, the sand column 4 is removed, and after replacing the new sand column 4, the locking screw 23 is installed. Finally, the upper and lower shafts 21 and the mounting plate 22 are installed. The upper shaft 20 and the lower shaft 21 of the utility model are split structures, which are convenient for disassembly and assembly. Compared with the integral sand column shaft, the sand column needs to be taken out from the lower end of the sand column shaft when disassembling, and the sand column needs to be inserted from the lower end of the sand column shaft when assembling. The utility model requires less upper and lower space when disassembling and assembling the sand column 4.
[0046] Preferably, the length of the upper shaft 20 extending into the sand column 4 and the length of the lower shaft 21 extending into the sand column 4 are both less than 1 / 8 of the height of the sand column 4 .
[0047] The specific installation structure of the sand column 4: Figure 3As shown, the upper end of the sand column 4 is rotatably connected to the upper shaft 20 through the upper bearing 24, and the lower end is rotatably connected to the lower shaft 21 through the lower bearing 25. The sand column 4 is tightly fitted with the outer ring of the upper bearing 24. The locking screw 23 is provided with a gasket 26 for lower limiting the upper bearing 24. The rod of the locking screw 23 passes through the gasket 26 and is screwed to the upper shaft 20.
[0048] The structure of the mounting base 3: The mounting base 3 includes a mounting plate five, a connecting member one and a connecting member two. The mounting plate five is connected to the slider 18 through the connecting member one, and the mounting plate five is connected to the mounting plate four 22 through the connecting member two. The upper shaft 20 and the motor 19 are both installed on the mounting plate five, and the mounting plate one 5 and the mounting plate two 6 are arranged on the connecting member one.
[0049] Furthermore, the mounting plate three 7 is connected to the piston rod of the cylinder 2 through the connecting piece three 27.
[0050] The above embodiment is only one of the preferred embodiments of the present invention and is not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes made based on the shape, structure, and principle of the present invention should be included in the scope of protection of the present invention.
Claims
1. A knife sharpening buffer structure, comprising a fixed seat (1) and a mounting seat (3) driven by a cylinder (2) to slide on the fixed seat (1), wherein a sand column (4) driven to rotate by a power device is provided on the mounting seat (3), characterized in that: The mounting seat (3) is provided with a mounting plate 1 (5) and a mounting plate 2 (6), a mounting plate 3 (7) is slidably provided between the mounting plate 1 (5) and the mounting plate 2 (6), the mounting plate 3 (7) is connected to the piston rod of the cylinder (2), an adjustable limit block (8) is provided on the mounting plate 2 (6), a buffer spring (9) is provided between the mounting plate 3 (7) and the limit block (8), and when the elastic force of the buffer spring (9) needs to be adjusted, the relative position of the limit block (8) and the mounting plate 3 (7) is adjusted.
2. The knife sharpening buffer structure according to claim 1, characterized in that: The limit block (8) is provided with a spring guide rod (10), the buffer spring (9) is sleeved on the spring guide rod (10), the rod of the adjusting bolt (11) passes through the mounting plate (5) and is screwed to the spring guide rod (10), and the mounting plate (5) is provided with a set screw (12) that is tightened on the rod of the adjusting bolt (11).
3. The knife sharpening buffer structure according to claim 2, characterized in that: A shock-absorbing pad (13) sleeved on the spring guide rod (10) is provided between the first mounting plate (5) and the third mounting plate (7).
4. The knife sharpening buffer structure according to claim 1, characterized in that: A guide rod (14) is provided between the first mounting plate (5) and the second mounting plate (6), the third mounting plate (7) is slidably mounted on the guide rod (14), a mounting block (15) is provided on the side of the third mounting plate (7) close to the second mounting plate (6), a linear bearing sleeved on the guide rod (14) is provided between the mounting block (15) and the guide rod (14), and a shock-absorbing block (16) sleeved on the guide rod (14) is provided between the mounting block (15) and the third mounting plate (7).
5. The knife sharpening buffer structure according to claim 1, characterized in that: The fixing seat (1) is provided with a guide rail (17), a slider (18) is slidably provided on the guide rail (17), the mounting seat (3) is mounted on the slider (18), and the cylinder (2) is a guide rod-less cylinder mounted on the fixing seat (1).
6. The knife sharpening buffer structure according to claim 5, characterized in that: The power device is a motor (19) mounted on a mounting seat (3); the rotating shaft of the motor (19) drives the sand column (4) through a synchronous belt; the slider (18) is located between the fixing seat (1) and the motor (19); and the cylinder (2) is located below the slider (18).
7. The knife sharpening buffer structure according to claim 1, characterized in that: The buffer spring (9) is a low-rigidity spring.
8. The knife sharpening buffer structure according to claim 1, characterized in that: The sand column (4) is a hollow structure. The upper end of the sand column (4) is rotatably connected to the upper shaft (20), and the lower end is rotatably connected to the lower shaft (21). The length of the upper shaft (20) extending into the sand column (4) and the length of the lower shaft (21) extending into the sand column (4) are both less than 1 / 2 of the height of the sand column (4). The upper shaft (20) is mounted on the mounting seat (3). The mounting seat (3) is detachably connected to a mounting plate four (22) located below the sand column (4). The lower shaft (21) is mounted on the mounting plate four (22). The sand column (4) is axially limited on the upper shaft (20) by a locking screw (23).
9. The knife sharpening buffer structure according to claim 8, characterized in that: The upper end of the sand column (4) is rotatably connected to the upper shaft (20) through an upper bearing (24), and the lower end is rotatably connected to the lower shaft (21) through a lower bearing (25). The sand column (4) is tightly matched with the outer ring of the upper bearing (24). A gasket (26) for lower limiting the upper bearing (24) is mounted on the locking screw (23). The rod of the locking screw (23) passes through the gasket (26) and is screwed to the upper shaft (20).