Optical fiber cut-off machine with cutter convenient to replace

Abstract

The utility model relates to the technical field of optical fiber processing equipment, in particular to an optical fiber cut-off machine with a cutter convenient to replace, which comprises a base and a mounting back plate, and an optical fiber fixing seat is arranged on the base; a first sliding plate and a driving device are arranged on the mounting back plate; the driving device is used for driving the first sliding plate to slide in the height direction of the mounting back plate; a second sliding plate is arranged on the first sliding plate and can move in the length direction of the first sliding plate; the second sliding plate is further provided with a cutter clamp used for clamping a cutter. The base is further provided with a tool changing seat, and the tool changing seat is located in the sliding path range of the second sliding plate so that the second sliding plate can drive the cutter clamp to move to the tool changing seat to replace the cutter. When the cutter needs to be replaced, the cutter clamp on the second sliding plate can be moved to the cutter replacing seat by sliding the second sliding plate; when the cutter is replaced, the cutter can be quickly replaced only by operating the cutter clamp to relieve the clamping of the old cutter and clamping the new cutter again after the new cutter is placed, so that the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber processing equipment technology, specifically to an optical fiber cutter that allows for easy replacement of the cutter blade. Background Technology

[0002] In fields such as fiber optic communication and fiber optic sensing, fiber optic cleaving is an essential and critical step. After prolonged use, the cutting edge of the fiber optic cleaving machine will wear down due to frequent contact with the fiber, resulting in uneven cutting surfaces and increased fiber loss. This seriously affects the quality and subsequent use of fiber optic products. Therefore, the cutting blade of the fiber optic cleaving machine needs to be replaced frequently.

[0003] In existing fiber optic cutting machines, the cutter is usually fixed to the machine body with screws. This fixing method makes the cutter replacement process cumbersome and complicated. Operators need to use special tools such as screwdrivers to unscrew multiple fixing screws one by one to remove the worn cutter. When installing a new cutter, the screw holes need to be aligned again and tightened one by one. The whole process is not only time-consuming, but also inefficient. Summary of the Invention

[0004] In view of the above-mentioned technical problems in the existing technology, this utility model provides an optical fiber cutter that facilitates the replacement of the cutter blade.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A fiber optic cutter with convenient blade replacement is provided, comprising a base and a mounting backplate. The base is provided with a fiber optic fixing seat. The mounting backplate is provided with a first sliding plate and a driving device. The first sliding plate is slidably connected to the mounting backplate via a first sliding assembly. The driving device is used to drive the first sliding plate to slide along the height direction of the mounting backplate. A second sliding plate is provided on the first sliding plate. The second sliding plate is slidably connected to the first sliding plate via a second sliding assembly and can move along the length direction of the first sliding plate. The second sliding plate is also provided with a blade clamp for holding the cutter. The base is also provided with a blade changer, which is located within the sliding path range of the second sliding plate, so that the second sliding plate can drive the blade clamp to move to the blade changer to replace the cutter.

[0007] Preferably, the second slide plate is provided with a cutter groove, and the cutter clamp includes a mounting block, a movable block and a rotating shaft. The mounting block is fixedly mounted on the second slide plate, and the movable block is rotatably connected to the mounting block through the rotating shaft. It also includes a spring, which is located between the mounting block and the movable block, and is used to push the movable block to press against the cutter groove to clamp the cutter.

[0008] Preferably, the tool changer includes a first fixed seat and a second fixed seat, with a tool changer groove for placing the cutter formed between the first fixed seat and the second fixed seat; a first limiting block is provided on the mounting back plate, and when the second sliding plate is in contact with the first limiting block, the cutter groove and the tool changer groove are aligned along the Z-axis.

[0009] Preferably, the first sliding component includes a first slide rail and a first slider. Two first slide rails are arranged at intervals along the height direction of the mounting back plate, and two first sliders are respectively fixed on the first slide plate and slide in cooperation with the first slide rails. The second sliding component includes a second slide rail and a second slider. The second slide rail is arranged along the length direction of the first slide plate, and the second slide rail is fixed on the second slide plate and slides in cooperation with the second slide rail.

[0010] Preferably, the first slide plate has a receiving cavity, and a third sliding component is provided in the receiving cavity. The third sliding component is slidably connected to the third slide plate. The third sliding component includes a third slide rail arranged along the length direction of the receiving cavity and a third slider that slides and engages with the third slide rail. The third slide plate and the third slider are fixedly connected. A locking block is hinged on the third slide plate, and the top of the second slide plate has multiple slots arranged along the length direction of the second slide plate and engaging with the locking block.

[0011] Preferably, the first slide plate is also provided with a linkage component, which includes a pull plate and a tension spring. The two ends of the tension spring are respectively connected to the pull plate and the third slide plate. The tension spring can pull the third slide plate to slide when the drive device drives the first slide plate to slide downward, so that the locking block on the third slide plate can engage with the locking slot at different positions on the second slide plate, thereby driving the second slide plate to move.

[0012] Preferably, the linkage assembly further includes a guiding device, which includes a guide block disposed on the first slide plate and a guide rod disposed on the third slide plate and slidably engaged with the guide block. The mating surfaces of the guide block and the guide rod are inclined surfaces, which are used to provide guidance when the third slide plate slides.

[0013] Preferably, the drive device includes a fixing block located on the back of the mounting back plate and a pressure rod hinged to the fixing block; wherein, the mounting back plate is provided with a pressure groove for the pressure rod to press down through, and a pressure block is provided on the top of the first slide plate; the base is also provided with a limiting rod for limiting the downward travel of the first slide plate and a damping rod for buffering the downward movement of the first slide plate.

[0014] Preferably, it further includes a reset device for resetting the first slide plate upward after the drive device completes the pressing action, and a limiting device for limiting the reset height of the first slide plate; the reset device includes a first connecting rod, a second connecting rod and a compression spring arranged vertically, the first connecting rod is disposed on the mounting back plate, the second connecting rod is disposed on the first slide plate, and the two ends of the compression spring are respectively connected to the first connecting rod and the second connecting rod; the limiting device includes a second limiting block disposed on the mounting back plate and located above the first slide plate, and a top block disposed on the second slide plate, the second limiting block is provided with a limiting screw threadedly connected thereto, and the bottom of the limiting screw can abut against the top of the top block.

[0015] Preferably, the fiber optic mounting base is provided with multiple fiber optic through slots of different sizes, and its end is also provided with a blade holder. The blade holder has multiple fiber optic through holes, and the multiple fiber optic through holes are coaxially connected with the multiple fiber optic through slots. The blade holder is also provided with a blade groove, and the depth of the blade groove is greater than the maximum cutting stroke of the cutter.

[0016] The beneficial effects of this utility model are:

[0017] This invention relates to a fiber optic cutter with a convenient cutter replacement feature. A cutter clamp mounted on a second sliding plate allows for quick clamping and releasing of the cutter. A cutter changer is positioned along the sliding path of the second sliding plate. When a cutter needs replacement, the cutter clamp moves directly to the changer along the predetermined path by sliding the second sliding plate. Then, simply operate the cutter clamp to release the old cutter, place the new cutter in, and re-clamp it. No screwdrivers or other tools are needed to tighten screws, allowing for a quick cutter replacement. This design simplifies the cutter replacement process, eliminates complex disassembly steps, significantly reduces replacement time, and substantially improves work efficiency. Attached Figure Description

[0018] Figure 1 This is a perspective view of a fiber optic cutter with a convenient blade replacement method, as shown in the embodiment.

[0019] Figure 2 This is a perspective view of another fiber optic cutter from one of the embodiments, which facilitates the replacement of the cutter blade.

[0020] Figure 3 This is a perspective view of a fiber optic cutter with a convenient blade replacement mechanism, concealing the reset device, as shown in the embodiment.

[0021] Figure 4 This is a perspective view of the tool changer in the embodiment.

[0022] Figure 5 This is an exploded view of the fiber optic mounting base and the drop knife holder in the embodiment.

[0023] Figure 6 This is a perspective view of the first and third skateboards in the embodiment.

[0024] Figure 7 This is a perspective view of the first and third skateboards in the embodiment.

[0025] Figure 8 This is a perspective view of the first, second, and third skateboards in the embodiment.

[0026] Figure 9 This is a perspective view of the first, second, and third skateboards in the embodiment.

[0027] Figure 10 This is an exploded view of the cutter clamp and the second slide plate in the embodiment.

[0028] Reference numerals: 1. Base; 10. Limiting rod; 11. Damping rod; 12. Tool changer; 121. First fixed seat; 122. Second fixed seat; 123. Tool changer slot; 13. Fiber optic fixing seat; 131. Fiber optic through slot; 14. Tool drop seat; 141. Fiber optic through hole; 142. Tool drop slot; 2. Mounting backplate; 20. Drive device; 201. Fixing block; 202. Pressure rod; 21. First limiting block; 22. Guide block; 23. Second limiting block; 24. Limiting screw; 25. Pressure groove; 26. First sliding plate; 261. Pressure block; 262. Pull plate; 263. 27. Tension spring; 271. Second slide plate; 272. Cutter groove; 273. Slot; 274. Top block; 28. Cutter clamp; 281. Mounting block; 282. Movable block; 283. Rotating shaft; 284. Spring; 29. ​​Third slide plate; 291. Slot; 292. Guide rod; 3. First sliding assembly; 30. First slide rail; 31. First slider; 4. Second sliding assembly; 40. Second slide rail; 41. Second slider; 5. Third sliding assembly; 50. Third slide rail; 51. Third slider; 6. Reset device; 60. First connecting rod; 61. Second connecting rod; 62. Compression spring. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0030] This embodiment provides a fiber optic cutter with a convenient blade replacement mechanism, such as... Figures 1 to 10 As shown, it includes a base 1 and a mounting backplate 2. The base 1 is provided with an optical fiber fixing seat 13 for fixing optical fibers. The mounting backplate 2 is provided with a first sliding plate 26 and a driving device 20. The first sliding plate 26 is slidably connected to the mounting backplate 2 through a first sliding component 3, and the driving device 20 is used to drive the first sliding plate 26 to slide along the height direction of the mounting backplate 2.

[0031] A second slide plate 27 is also provided on the first slide plate 26. The second slide plate 27 is slidably connected to the first slide plate 26 via the second sliding component 4 and can move along the length of the first slide plate 26. The second slide plate 27 is also provided with a cutter clamp 28 for holding the cutter. In use, the first slide plate 26 is driven to slide downward by the drive device 20, so that the second slide plate 27 and the cutter clamp 28 on the second slide plate 27 slide downward together, ultimately causing the cutter to cut the optical fiber on the optical fiber fixing seat 13.

[0032] The first sliding assembly 3 includes a first slide rail 30 and a first slider 31. Two first slide rails 30 are arranged at intervals along the height direction of the mounting back plate 2. Two first sliders 31 are respectively fixedly mounted on the first slide plate 26 and slide in cooperation with the first slide rails 30. The second sliding assembly 4 includes a second slide rail 40 and a second slider 41. The second slide rail 40 is arranged along the length direction of the first slide plate 26. The second slider 41 is fixedly mounted on the second slide plate 27 and slides in cooperation with the second slide rail 40.

[0033] Furthermore, the second slide plate 27 is provided with a cutter groove 271. The cutter clamp 28 cooperates with the cutter groove 271 to clamp the cutter. The cutter clamp 28 includes a mounting block 281, a movable block 282, and a rotating shaft 283. The mounting block 281 is fixedly mounted on the second slide plate 27 by bolts. The movable block 282 is movably connected to the mounting block 281 through the rotating shaft 283. The spring 284 is also included. The spring 284 is located between the movable block 282 and the mounting block 281. The two ends of the spring 284 abut against the bottom of the mounting block 281 and the top of the movable block 282, respectively. The elastic force of the spring 284 can make the movable block 282 rotate around the rotating shaft 283, thereby pressing the back of the movable block 282 against the cutter in the cutter groove 271. With this design, when the cutter needs to be disassembled, the operator can simply rotate the movable block 282 to move its back away from the cutter groove 271 to loosen the cutter. The entire disassembly process can be completed with one hand without the need for tools such as screwdrivers or wrenches, thus improving work efficiency.

[0034] Furthermore, the fiber optic mounting base 13 is provided with multiple fiber optic passage slots 131. The width and depth of the fiber optic passage slots 131 can be designed according to the dimensions of common optical fibers to ensure that the optical fibers can be placed stably. This design improves the practicality of the cutting machine. At the end of the fiber optic mounting base 13, there is also a blade holder 14. The blade holder 14 is provided with multiple fiber optic passage holes 141. The multiple fiber optic passage holes 141 are coaxially connected to the multiple fiber optic passage slots 131. With this design, when the optical fiber passes through the fiber optic passage slot 131 into the fiber optic passage hole 141, the optical fiber will continue to pass out to the other side of the blade holder 14. The hole wall of the fiber optic passage hole 141 can provide radial restraint for the optical fiber, effectively preventing the optical fiber from shifting or shaking during the cutting process, thereby ensuring that the cutter can cut the optical fiber vertically, avoiding the formation of a slanted cut, and improving the cutting quality and accuracy.

[0035] The blade holder 14 is provided with a blade groove 142, and the depth of the blade groove 142 is greater than the maximum cutting stroke of the cutter. This design can provide sufficient movement space for the cutter, ensuring that the cutter will not hit the bottom of the blade groove 142 after completing the cutting action, thus avoiding damage to the cutter during operation.

[0036] Furthermore, a blade changer 12 is also provided on the base 1. The blade changer 12 is located within the sliding path range of the second slide plate 27. The blade changer 12 includes a first fixed seat 121 and a second fixed seat 122. A blade changer groove 123 for placing the blade is formed between the first fixed seat 121 and the second fixed seat 122. In use, when the blade needs to be replaced, firstly, by rotating the movable block 282 in the blade clamp 28, the elastic force of the spring 284 is overcome, causing it to rotate around the pivot 283, releasing the clamp on the old blade, and taking out the old blade. Then, the second slide plate 27 is moved until it is directly above the blade changer groove 123. Finally, the movable block 282 of the blade clamp 28 is released, the spring 284 releases its elastic potential energy, and pushes the movable block 282 to reset around the pivot 283. Its back presses the new blade in the blade changer groove 123 into the blade groove 271 of the second slide plate 27, completing the blade replacement.

[0037] In order to make it easier to align the cutter groove 271 with the tool changing groove 123, a first limiting block 21 is provided on the mounting back plate 2. When in use, when the second slide plate 27 is slid until the left side of the second slide plate 27 contacts the first limiting block 21, the cutter groove 271 on the second slide plate 27 is exactly aligned with the tool changing groove 123 along the Z-axis, making it easier for the operator to change the cutter.

[0038] Furthermore, the driving device 20 includes a fixing block 201 located on the back of the mounting back plate 2. A pressure rod 202 is hinged to the fixing block 201. The pressure rod 202 can rotate around the fixing block 201 under the drive of an external force, thereby causing the first slide plate 26 to move downward. The mounting back plate 2 also has a pressure groove 25 arranged along the height direction of the mounting back plate 2. When the pressure rod 202 rotates, it can pass through the pressure groove 25 and contact the first slide plate 26, thereby driving the first slide plate 26 to move downward. To prevent the first slide plate 26 from deforming due to prolonged pressure from the pressure rod 202, a pressure-bearing block 261 is also provided at the top of the first slide plate 26.

[0039] Furthermore, a limiting rod 10 is provided on the base 1 to limit the downward travel of the first slide plate 26. The limiting rod 10 can also be adjusted up and down to change the downward travel of the first slide plate 26. A damping rod 11 is also provided on the base 1 to buffer the first slide plate 26 during its downward movement.

[0040] Furthermore, the fiber optic cutter also includes a reset device 6 for resetting the first slide plate 26 upwards after the drive device 20 completes its downward pressing action. The reset device 6 includes a first connecting rod 60, a second connecting rod 61, and a compression spring 62 arranged vertically. The first connecting rod 60 is mounted on the mounting back plate 2, the second connecting rod 61 is mounted on the first slide plate 26, and the two ends of the compression spring 62 are connected to the first connecting rod 60 and the second connecting rod 61, respectively. In use, when the pressure rod 202 drives the first slide plate 26 downwards, the compression spring 62 stretches under the action of the first slide plate 26. When the pressure rod 202 is released and the pressure is removed, the compression spring 62 can contract under the action of elastic force, thereby driving the first slide plate 26 to slide upwards to reset.

[0041] To limit the reset height of the first slide plate 26, a limiting device is also provided. The limiting device includes a second limiting block 23, which is disposed on the mounting back plate 2 and located above the first slide plate 26, and a top block 273 disposed on the second slide plate 27. The second limiting block 23 is provided with a limiting screw 24 threadedly connected to it, and the bottom of the limiting screw 24 can abut against the top of the top block 273. The limiting screw 24 can also change its extension length by threading with the second limiting block 23, thereby changing the reset height of the first slide plate 26.

[0042] Furthermore, a third slide plate 29 is added to the first slide plate 26, and a locking block 291 is hinged to the third slide plate 29. Simultaneously, a locking groove 272 is provided on the top of the second slide plate 27. Multiple locking grooves 272 are arranged sequentially along the length of the second slide plate 27. The locking block 291 can engage with one of the locking grooves 272, thereby fixing the second slide plate 27 in place. Through the engaging cooperation between the locking block 291 and the locking groove 272, the position of the second slide plate 27 can be effectively locked when the first slide plate 26 drives the second slide plate 27 to press down, preventing accidental slippage and ensuring the cutting accuracy and stability of the fiber optic cable by the cutter.

[0043] The third slide plate 29 is slidably connected to the first slide plate 26 via the third sliding component 5. Specifically, the first slide plate 26 has a receiving cavity, and the third sliding component 5 is disposed in the receiving cavity. The third sliding component 5 includes a third slide rail 50 disposed along the length direction of the receiving cavity and a third slider 51 that slidably cooperates with the third slide rail 50. The third slide plate 29 and the third slider 51 are fixedly connected.

[0044] Furthermore, the first slide plate 26 is also equipped with a linkage component, which includes a pull plate 262 and a tension spring 263. The pull plate 262 is fixedly mounted on the first slide plate 26, and the two ends of the tension spring 263 are respectively connected to the pull plate 262 and the third slide plate 29. In the initial state, the tension spring 263 is in a natural or pre-stretched state; when the drive device 20 drives the first slide plate 26 to slide downward, the pull plate 262 moves downward synchronously with the first slide plate 26, while the third slide plate 29 lags behind the first slide plate 26 in movement due to the engagement of the locking block 291 with the locking slot 272 of the second slide plate 27. At this time, the tension spring 263 is further stretched, accumulating elastic potential energy. When the first slide plate 26 moves down to a specific position, under the action of the elastic restoring force of the tension spring 263, the third slide plate 29 slides along the third slide rail 50, the locking block 291 disengages from the current locking slot 272, and re-engages with the locking slot 272 at different positions on the second slide plate 27 during the sliding process, thereby causing the second slide plate 27 to move. This design allows the cutter to automatically change its position for the next cut after each fiber optic cut, avoiding continuous cutting pressure on a single location and preventing premature damage to the cutter.

[0045] The linkage assembly also includes a guiding device, which comprises a guide block 22 disposed on the first slide plate 26 and a guide rod 292 disposed on the third slide plate 29 and slidably engaged with the guide block 22. The mating surfaces of the guide block 22 and the guide rod 292 are inclined surfaces. During the sliding of the third slide plate 29, the inclined surface engagement between the guide block 22 and the guide rod 292 guides the movement trajectory of the third slide plate 29, preventing it from deviating or wobbling during sliding, and ensuring that the locking block 291 can accurately engage with the corresponding locking slot 272.

[0046] In the description of this utility model, it is obvious that the described embodiments are only a part of the embodiments of this utility model, and not all of them. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0047] Therefore, the above detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

Claims

1. A fiber optic cutter with a convenient blade replacement mechanism, characterized in that, The device includes a base (1) and a mounting backplate (2). The base (1) is provided with an optical fiber fixing seat (13). The mounting backplate (2) is provided with a first sliding plate (26) and a driving device (20). The first sliding plate (26) is slidably connected to the mounting backplate (2) through a first sliding component (3). The driving device (20) is used to drive the first sliding plate (26) to slide along the height direction of the mounting backplate (2). The first sliding plate (26) is provided with a second sliding plate (27). The second sliding plate (27) is slidably connected to the first sliding plate (26) through a second sliding component (4) and can move along the length direction of the first sliding plate (26). The second sliding plate (27) is also provided with a cutting clamp (28) for holding the cutting blade. The base (1) is also provided with a cutting tool holder (12). The cutting tool holder (12) is located within the sliding path range of the second sliding plate (27) so that the second sliding plate (27) can drive the cutting tool holder (28) to the cutting tool holder (12) to replace the cutting blade.

2. The fiber optic cutter with convenient blade replacement according to claim 1, characterized in that, The second slide plate (27) is provided with a cutter groove (271). The cutter clamp (28) includes a mounting block (281), a movable block (282), and a rotating shaft (283). The mounting block (281) is fixedly mounted on the second slide plate (27). The movable block (282) is rotatably connected to the mounting block (281) through the rotating shaft (283). It also includes a spring (284), which is located between the mounting block (281) and the movable block (282) and is used to push the movable block (282) to press against the cutter groove (271) to clamp the cutter.

3. The fiber optic cutter with convenient blade replacement according to claim 2, characterized in that, The tool changer (12) includes a first fixed seat (121) and a second fixed seat (122), and a tool changer groove (123) for placing the cutter is formed between the first fixed seat (121) and the second fixed seat (122); a first limiting block (21) is provided on the mounting back plate (2), and when the second sliding plate (27) is in contact with the first limiting block (21), the cutter groove (271) and the tool changer groove (123) are aligned along the Z-axis.

4. The fiber optic cutter with convenient blade replacement according to claim 1, characterized in that, The first sliding assembly (3) includes a first slide rail (30) and a first slider (31). The two first slide rails (30) are arranged at intervals along the height direction of the mounting back plate (2). The two first sliders (31) are respectively fixed on the first slide plate (26) and slide in cooperation with the first slide rails (30). The second sliding assembly (4) includes a second slide rail (40) and a second slider (41). The second slide rail (40) is arranged along the length direction of the first slide plate (26). The second slider (41) is fixed on the second slide plate (27) and slides in cooperation with the second slide rail (40).

5. The fiber optic cutter with convenient blade replacement according to claim 1, characterized in that, The first slide plate (26) has a receiving cavity, and a third sliding component (5) is provided in the receiving cavity. The third sliding component (5) is slidably connected to the third slide plate (29). The third sliding component (5) includes a third slide rail (50) arranged along the length direction of the receiving cavity and a third slider (51) that slides and cooperates with the third slide rail (50). The third slide plate (29) and the third slider (51) are fixedly connected. A locking block (291) is hinged on the third slide plate (29). The top of the second slide plate (27) is provided with multiple slots (272) arranged along the length direction of the second slide plate (27) and engaging with the locking block (291).

6. The fiber optic cutter with convenient blade replacement according to claim 5, characterized in that, The first slide plate (26) is also equipped with a linkage component, which includes a pull plate (262) and a tension spring (263). The two ends of the tension spring (263) are connected to the pull plate (262) and the third slide plate (29) respectively. When the drive device (20) drives the first slide plate (26) to slide downward, the tension spring (263) can pull the third slide plate (29) to slide, so that the locking block (291) on the third slide plate (29) can engage with the locking slot (272) at different positions on the second slide plate (27), thereby driving the second slide plate (27) to move.

7. The fiber optic cutter with convenient blade replacement according to claim 6, characterized in that, The linkage assembly also includes a guide device, which includes a guide block (22) on the first slide plate (26) and a guide rod (292) on the third slide plate (29) that slides in cooperation with the guide block (22). The mating surfaces of the guide block (22) and the guide rod (292) are inclined surfaces, which are used to provide guidance when the third slide plate (29) slides.

8. The fiber optic cutter with convenient blade replacement according to claim 1, characterized in that, The drive device (20) includes a fixing block (201) located on the back of the mounting back plate (2) and a pressure rod (202) hinged to the fixing block (201); wherein, the mounting back plate (2) is provided with a pressure groove (25) for the pressure rod (202) to press down through, and a pressure block (261) is provided on the top of the first slide plate (26); the base (1) is also provided with a limiting rod (10) for limiting the downward stroke of the first slide plate (26) and a damping rod (11) for buffering the downward movement of the first slide plate (26).

9. The fiber optic cutter with convenient blade replacement according to claim 8, characterized in that, It also includes a reset device (6) for resetting the first slide plate (26) upward after the drive device (20) completes the pressing action, and a limiting device for limiting the reset height of the first slide plate (26); the reset device (6) includes a first connecting rod (60), a second connecting rod (61) and a compression spring (62) arranged vertically, the first connecting rod (60) is provided on the mounting back plate (2), the second connecting rod (61) is provided on the first slide plate (26), and the two ends of the compression spring (62) are respectively connected to the first connecting rod (60) and the second connecting rod (61); the limiting device includes a second limiting block (23) provided on the mounting back plate (2) and located above the first slide plate (26), and a top block (273) provided on the second slide plate (27), the second limiting block (23) is provided with a limiting screw (24) threadedly connected to it, and the bottom of the limiting screw (24) can abut against the top of the top block (273).

10. A fiber optic cutter with a convenient blade replacement according to claim 1, characterized in that, The fiber optic mounting base (13) is provided with multiple fiber optic through slots (131) of different sizes, and a blade holder (14) is provided at its end. The blade holder (14) is provided with multiple fiber optic through holes (141), and the multiple fiber optic through holes (141) are coaxially connected with the multiple fiber optic through slots (131). The blade holder (14) is also provided with a blade groove (142), and the depth of the blade groove (142) is greater than the maximum cutting stroke of the cutter.

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