Handheld optical fiber cutting device capable of adjusting cutting angle

Abstract

The invention discloses a handheld optical fiber cutting device capable of adjusting a cutting angle, which comprises a supporting base and an upper cover hinged on the supporting base, an optical fiber tray with a through middle part is rotatably arranged on the upper surface of the supporting base, optical fiber fixing assemblies are oppositely arranged on the optical fiber tray, a through empty groove is formed in the middle part of the supporting base, and the optical fiber fixing assemblies are arranged in the through empty groove. A knife rest is arranged in the empty groove, a cutting knife is arranged on the knife rest, the cutting knife is exposed at the middle through position of the optical fiber tray, and a driving assembly for driving the optical fiber tray to rotate is arranged in the supporting base on one side of the empty groove; a to-be-cut optical fiber is placed in the optical fiber fixing assembly on the optical fiber tray, the driving assembly drives the optical fiber tray to rotate, the to-be-cut optical fiber fixed in the optical fiber fixing assembly is made to deflect, a set included angle is formed between the to-be-cut optical fiber and the cutting knife, then the knife rest is pushed, and the cutting knife completes optical fiber cutting.

Description

Technical Field

[0001] The present invention relates to the technical field of optical fiber cutting, and in particular to a handheld optical fiber cutting device with adjustable cutting angle. Background Art

[0002] Fiber optic cutting is an operation that is involved in the fiber optic sensing industry. With the increase in the types of fiber optic sensors, there are more detailed requirements for the fiber optic cutting end face and cutting angle. Conventional fiber optic cutting knives can only cut a plane perpendicular to the fiber axis, such as the cutting device described in the Chinese patent (application number CN222145273U); and the fiber optic cutting knife with a rotating angle can only use a clamp on one side to fix one end of the fiber, and twist the other end of the fiber around the fiber axis to a certain angle value through the clamp, and then perform the cutting operation. After the cutting is completed, the stress of the twisted section of the fiber is released and restored to the initial angle. In this way, the two fiber end faces after cutting only have a radial angle difference, but the fiber end face is still perpendicular to the fiber propagation axis, such as the cutting device described in the Chinese patent (application numbers CN209280976U, CN209280976U).

[0003] The cutting device described above can only be used for optical fibers with non-circular symmetrical structures. Cutting out a fixed radial angle difference can be used to make depolarizers, but it cannot meet the requirements of optical fiber sensors with end face coupling angle requirements and RL reflection end face angle requirements. Summary of the Invention

[0004] In response to the above-mentioned problems in the prior art, the present invention provides a handheld optical fiber cutting device with adjustable cutting angle, which solves the problem that the existing cutting device cannot meet the cutting needs with end face coupling angle requirements.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] Provided is a handheld optical fiber cutting device with adjustable cutting angle, which includes a support base and an upper cover hinged on the support base, a fiber tray with a central portion passing through is rotatably provided on the upper surface of the support base, a fiber fixing assembly is relatively provided on the fiber tray, a through empty slot is provided in the middle of the support base, a knife holder is provided in the empty slot, a cutting knife is provided on the knife holder, and the cutting knife is exposed at the central portion passing through the fiber tray, and a driving assembly for driving the fiber tray to rotate is provided in the support base located on one side of the empty slot.

[0007] The present invention places the optical fiber to be cut in the optical fiber fixing assembly on the optical fiber tray, and drives the optical fiber tray to rotate through the driving assembly, so that the optical fiber to be cut fixed in the optical fiber fixing assembly is deflected, so that the optical fiber to be cut and the cutting knife form a set angle, and then pushes the knife holder to enable the cutting knife to complete the optical fiber cutting.

[0008] Furthermore, the optical fiber fixing assembly includes two optical fiber fixing plates arranged opposite to each other on the optical fiber tray, and the optical fiber fixing plates are provided with optical fiber placement grooves; and an optical fiber groove cover plate is hingedly connected to one side of the optical fiber fixing plates.

[0009] Furthermore, a sliding pressing assembly is provided on the inner side of the upper cover to act on the optical fiber slot cover plate;

[0010] The sliding pressing assembly includes a plurality of sliding placement grooves opened on the inner side of the upper cover and connected in a ring shape, and a slider arranged in the sliding placement groove; a threaded hole is opened in the sliding placement groove, and a bolt is inserted through the slider into the threaded hole to fix the slider, and a spring is sleeved on the bolt located in the threaded hole.

[0011] Furthermore, a limiting block is provided at the end of the optical fiber slot cover plate, a fixing groove which matches the limiting block is opened on the optical fiber fixing plate, and the limiting block is embedded in the fixing groove.

[0012] Furthermore, a mounting groove is provided in the middle of the upper surface of the support base, the optical fiber tray is rotatably installed in the mounting groove, and a scale is provided on the groove edge of the mounting groove.

[0013] Furthermore, the drive assembly includes a knob, which is arranged on a support base on one side of the empty slot through a knob base. The output end of the knob extending into the support base is provided with a screw rod, which is meshed with a transmission gear, and the transmission gear is meshed with an annular tooth on the lower surface of the optical fiber tray.

[0014] Furthermore, a cutting groove is provided in the middle of the tool holder, a tool seat is provided in the middle of the cutting groove, a blade placement groove is provided on the tool seat, and the cutting knife is installed in the blade placement groove.

[0015] Furthermore, a sliding block is provided on one side of the tool holder, and a sliding groove that fits with the sliding block is opened on the side wall of the empty groove, and the sliding block is embedded in the sliding groove.

[0016] Furthermore, a fiber optic storage box is provided on the support base located on one side of the empty slot.

[0017] The present invention discloses a handheld optical fiber cutting device with adjustable cutting angle, which has the following beneficial effects:

[0018] The present invention places the optical fiber to be cut in the optical fiber fixing assembly on the optical fiber tray, and drives the optical fiber tray to rotate through the driving assembly, so that the optical fiber to be cut fixed in the optical fiber fixing assembly is deflected, so that the optical fiber to be cut and the cutting knife form a set angle, and then the knife holder is pushed to enable the cutting knife to complete the optical fiber cutting. It can meet the use of optical fiber sensors with end face coupling angle requirements and RL reflection end face angle requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1The figure is a structural schematic diagram of a handheld optical fiber cutting device with adjustable cutting angle according to the present invention.

[0020] Figure 2 It is a structural schematic diagram of the optical fiber tray of the present invention.

[0021] Figure 3 It is a structural schematic diagram of the support base of the present invention.

[0022] Figure 4 This is a schematic structural diagram of the support base of the present invention from another angle.

[0023] Figure 5 Schematic diagram of the structure of the drive assembly of the present invention.

[0024] Figure 6 It is a structural schematic diagram of the tool holder of the present invention.

[0025] Figure 7 This is a schematic structural diagram of the tool holder of the present invention from another angle.

[0026] Figure 8 It is a structural schematic diagram of the upper cover of the present invention.

[0027] Among them, 1. Support base; 11. Empty slot; 12. Mounting slot; 13. Scale; 14. Sliding slot; 2. Upper cover; 21. Sliding placement slot; 22. Slider; 23. Threaded hole; 24. Spring; 3. Fiber tray; 31. Ring teeth; 4. Knife holder; 41. Cutting slot; 42. Knife holder; 43. Blade placement slot; 44. Sliding block; 5. Cutting knife; 6. Drive assembly; 61. Knob; 62. Knob base; 63. Screw; 64. Transmission gear; 71. Fiber fixing plate; 72. Fiber placement slot; 73. Fiber slot cover; 74. Fixing slot; 8. Fiber storage box. DETAILED DESCRIPTION

[0028] The specific embodiments of the present invention are described below to facilitate understanding of the present invention by those skilled in the art. However, it should be clear that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the appended claims, these changes are obvious, and all inventions and creations utilizing the concepts of the present invention are protected.

[0029] Example 1

[0030] refer to Figures 1-8 This embodiment provides a handheld optical fiber cutting device with adjustable cutting angle, which aims to solve the problem that the existing cutting device cannot meet the cutting needs with end face coupling angle requirements. The specific structure of this embodiment will be described in detail below.

[0031] A handheld optical fiber cutting device with adjustable cutting angle comprises a support base 1 and an upper cover 2 hinged to the support base 1.

[0032] A fiber optic tray 3 with a central portion passing through is rotatably provided on the upper surface of the support base 1 , and a fiber optic fixing assembly is relatively provided on the fiber optic tray 3 .

[0033] Specifically, a through slot 11 is provided in the middle of the support base 1, a knife holder 4 is provided in the slot 11, a cutting knife 5 is provided on the knife holder 4, and the cutting knife 5 is exposed at the middle through portion of the optical fiber tray 3; a driving assembly 6 for driving the optical fiber tray 3 to rotate is provided in the support base 1 located on one side of the slot 11.

[0034] In this embodiment, the optical fiber to be cut is placed in the optical fiber fixing assembly on the optical fiber tray 3, and the optical fiber tray 3 is driven to rotate by the driving assembly 6, so that the optical fiber to be cut fixed in the optical fiber fixing assembly is deflected, so that the optical fiber to be cut and the cutting knife 5 form a set angle, and then the knife holder 4 is pushed to enable the cutting knife 5 to complete the optical fiber cutting, which can meet the use of optical fiber sensors with end face coupling angle requirements and RL reflection end face angle requirements.

[0035] Specifically, the optical fiber fixing assembly includes two optical fiber fixing plates 71 arranged opposite to each other on the optical fiber tray 3 , and an optical fiber placement groove 72 is formed on the optical fiber fixing plates 71 ; an optical fiber groove cover plate 73 is hinged to one side of the optical fiber fixing plates 71 .

[0036] In this embodiment, the middle of the optical fiber tray 3 is penetrated, and two blocks are relatively arranged in the middle. Each block is attached to an optical fiber fixing plate 71, so that the optical fiber to be cut is embedded in the optical fiber placement groove 72 on the optical fiber fixing plate 71, and the optical fiber to be cut is flipped and fixed by the optical fiber groove cover 73, and then the optical fiber to be cut is fixed between the two optical fiber fixing plates 71.

[0037] Specifically, a sliding and pressing assembly that acts on the optical fiber slot cover 73 is provided on the inner side of the upper cover 2; the sliding and pressing assembly includes a plurality of sliding placement grooves 21 opened on the inner side of the upper cover 2 and connected in a ring shape, and a slider 22 set in the sliding placement groove 21; a threaded hole 23 is opened in the sliding placement groove 21, and the slider 22 is fixed by a bolt passing through the slider 22 and inserted into the threaded hole 23, and a spring 24 is sleeved on the bolt located in the threaded hole 23.

[0038] In this embodiment, a plurality of sliding placement grooves 21 are provided on the inner side of the upper cover 2, and the plurality of sliding placement grooves 21 are connected in a ring shape. A bolt is passed through the slider 22 in each sliding placement groove and inserted into the threaded hole 23 in the middle of the sliding placement groove 21, thereby fixing the slider 22 in the sliding placement groove 21. The threaded hole 23 is a T-shaped hole, and a spring 24 is sleeved on the bolt in the threaded hole 23. The bolt leaves room for the slider 22 to rebound. When the upper cover 2 is flipped over, the slider 22 contacts the optical fiber slot cover plate 73 to squeeze the spring 24. The spring 24 lifts the slider 22 based on the recovery force, thereby reversely squeezing the optical fiber slot cover plate 73, thereby further fixing the optical fiber to be cut.

[0039] Optionally, the inner wall of the sliding placement groove 21, the outer wall of the slider 22 and the threaded hole 23 are all inclined toward the middle part of the upper cover 2, so that after the upper cover 2 is flipped over, when the slider 22 contacts the optical fiber slot cover 73 to squeeze the spring 24, the spring 24 lifts the slider 22 based on the recovery force, thereby reversely squeezing the optical fiber slot cover 73, and the slider 22 slides downward in the sliding placement groove 21, thereby driving the optical fiber slot cover 73 to move outward, thereby applying axial tension to the optical fiber to be cut, and further fixing the optical fiber to be cut.

[0040] Optionally, a blocking strip that fits the slider 22 is provided on the optical fiber slot cover 73 .

[0041] Specifically, a limiting block is provided at the end of the optical fiber slot cover plate 73 , and a fixing groove 74 that fits with the limiting block is opened on the optical fiber fixing plate 71 , and the limiting block is embedded in the fixing groove 74 .

[0042] In this embodiment, the optical fiber slot cover plate 73 is hinged on one side of the optical fiber fixing plate 71. When the optical fiber slot cover plate 73 is flipped over to squeeze and fix the optical fiber to be cut, the limit block (not shown) at the end of the optical fiber slot cover plate 73 is embedded in the fixing slot 74. At the same time, the size of the fixing slot 74 can be slightly larger than the limit block to prevent interference.

[0043] Specifically, a mounting groove 12 is provided in the middle of the upper surface of the support base 1 , the optical fiber tray 3 is rotatably mounted in the mounting groove 12 , and a scale 13 is provided on the groove edge of the mounting groove 12 .

[0044] Specifically, the drive assembly 6 includes a knob 61, which is arranged on the support base 1 on one side of the empty slot 11 through a knob base 62. The knob 61 extends to the output end inside the support base 1 and is provided with a screw 63. The screw 63 is meshed and connected with a transmission gear 64, and the transmission gear 64 is meshed and connected with the annular teeth 31 on the lower surface of the optical fiber tray 3.

[0045] In this embodiment, a mounting groove 12 is opened in the middle of the upper surface of the support base 1, and the middle of the mounting groove 12 is connected with the empty groove 11 to expose the cutting knife 5. The optical fiber tray 3 can be rotatably set in the mounting groove 12 through the existing YRT040 turntable bearing, so that the optical fiber tray 3 can be rotated relative to the support base 1, and a scale 13 is provided on the groove edge of the mounting groove 12 to indicate the rotation angle of the optical fiber tray 3.

[0046] On one side of the empty slot 11, the knob 61 is installed on the support base 1 through the knob base 62. The output end of the knob 61 extends into the support base 1, and a screw 63 is fixedly provided on the output shaft of the knob 61. A transmission gear 64 is rotatably provided on one side of the screw 63. The transmission gear 64 is set in the support base 1 through a bearing, so as to adjust the knob 61 and form a spiral micrometer structure with the scale on the knob base 62, which can accurately adjust the required cutting angle. By rotating the knob 61, the knob 61 drives the screw 63, which drives the transmission gear 64 to rotate, and then the transmission gear 64 is engaged with the annular teeth 31 on the lower surface of the optical fiber tray 3, driving the optical fiber tray 3 to rotate, thereby completing the adjustment of the optical fiber tray 3.

[0047] In this embodiment, the knob 61 can adopt the existing SR20AL type mechanical differential head. One rotation of the screw drives the screw 63 to rotate one circle, thereby driving the transmission gear 64 to rotate one tooth pitch. The number of teeth of the transmission gear 64 is 18, and the number of teeth of the annular teeth 31 is 180. Therefore, one rotation of the screw corresponds to a rotation of the optical fiber tray 3 of 2°; there are 20 equally divided scales on the differential cylinder, so each rotation of one small grid (1 / 20 circle) corresponds to a rotation of the optical fiber tray 3 of 0.1°.

[0048] Specifically, a cutting groove 41 is provided in the middle of the tool holder 4 , a tool seat 42 is provided in the middle of the cutting groove 41 , a placement groove 43 is provided on the tool seat 42 , and the cutting tool 5 is installed in the placement groove 43 .

[0049] In this embodiment, the cutting knife 5 is installed in the placement groove 43 on the knife seat 42. A cutting groove 41 is opened in the middle of the knife holder 4 for placing the knife seat 42. The cutting knife 5 can be easily replaced through the knife seat 42.

[0050] Specifically, a sliding block 44 is provided on one side of the tool holder 4 , and a sliding groove 14 that fits with the sliding block 44 is opened on the side wall of the empty groove 11 , and the sliding block 44 is embedded in the sliding groove 14 .

[0051] In this embodiment, a sliding groove 14 is provided on the inner wall of the hollow groove 11 , and the movement of the tool holder 4 is guided by the cooperation between the sliding groove 14 and the sliding block 44 .

[0052] Specifically, a fiber optic storage box 8 is provided on the support base 1 located on one side of the empty slot 11 .

[0053] In this embodiment, a through groove is provided on one side of the empty groove 11 on the support base 1 , and an optical fiber storage box 8 can be embedded in the through groove to store waste materials after optical fiber cutting.

[0054] Optionally, a through slot is provided on one side of the empty slot 11 on the support base 1 , and the optical fiber storage box 8 can be rotatably connected to the through slot via a rotating shaft in the through slot.

[0055] The working principle of this scheme's handheld optical fiber cutting device with adjustable cutting angle is as follows:

[0056] In practical application, the present invention is Figures 1-8 First, place the tool holder 4 in the empty slot 11, then embed the optical fiber to be cut into the optical fiber placement slot 72 on the optical fiber fixing plate 71, flip and fix the optical fiber to be cut through the optical fiber slot cover 73, and then fix the optical fiber to be cut between the two optical fiber fixing plates 71.

[0057] Then, by rotating the knob 61, the knob 61 drives the screw 63, which drives the transmission gear 64 to rotate, and then the transmission gear 64 is engaged with the annular teeth 31 on the lower surface of the optical fiber tray 3, driving the optical fiber tray 3 to rotate, thereby completing the adjustment of the optical fiber tray 3.

[0058] Next, close the upper cover 2. When the slider 22 of the sliding and pressing assembly on the upper cover 2 contacts the optical fiber slot cover 73 to squeeze the spring 24, the spring 24 lifts the slider 22 based on the recovery force, thereby squeezing the optical fiber slot cover 73 in the opposite direction. The slider 22 slides downward in the placement groove 21, thereby driving the optical fiber slot cover 73 to move outward, thereby applying axial tension to the optical fiber to be cut, and further fixing the optical fiber to be cut.

[0059] Finally, the blade holder 4 is pushed, and the cleaver 5 on the blade holder 4 cuts the optical fiber. After cutting, the upper cover 2 is opened, and the slider 22 returns to its initial position due to the elastic force of the spring 24. The optical fiber slot cover 73 is opened, and the discarded cut ends can be placed in the optical fiber storage box 8.

[0060] Although the specific embodiments of the invention are described in detail in conjunction with the accompanying drawings, this should not be construed as limiting the scope of protection of this patent. Within the scope described by the claims, various modifications and variations that can be made by those skilled in the art without creative work still fall within the scope of protection of this patent.

Claims

1. A handheld optical fiber cutting device with adjustable cutting angle, characterized by: It comprises a support base (1) and an upper cover (2) hinged on the support base (1); An optical fiber tray (3) with a central portion passing through is rotatably provided on the upper surface of the support base (1), and an optical fiber fixing assembly is relatively provided on the optical fiber tray (3); A through slot (11) is provided in the middle of the support base (1), a knife holder (4) is provided in the slot (11), a cutting knife (5) is provided on the knife holder (4), and the cutting knife (5) is exposed at the through portion in the middle of the optical fiber tray (3); A driving assembly (6) for driving the optical fiber tray (3) to rotate is provided in the supporting base (1) located on one side of the empty slot (11).

2. The handheld optical fiber cutting device with adjustable cutting angle according to claim 1, characterized in that: The optical fiber fixing assembly comprises two optical fiber fixing plates (71) arranged opposite to each other on an optical fiber tray (3), wherein an optical fiber placement groove (72) is provided on the optical fiber fixing plates (71); and an optical fiber groove cover plate (73) is hingedly connected to one side of the optical fiber fixing plates (71).

3. The handheld optical fiber cutting device with adjustable cutting angle according to claim 2, characterized in that: A sliding pressing assembly is provided on the inner side of the upper cover (2) and acts on the optical fiber slot cover plate (73); The sliding pressing assembly comprises a plurality of sliding placement grooves (21) opened on the inner side of the upper cover (2) and connected in an annular shape, and a slider (22) arranged in the sliding placement groove (21); a threaded hole (23) is opened in the sliding placement groove (21), and a bolt is inserted through the slider (22) into the threaded hole (23) to fix the slider (22), and a spring (24) is sleeved on the bolt located in the threaded hole (23).

4. The handheld optical fiber cutting device with adjustable cutting angle according to claim 3, characterized in that: A limiting block is provided at the end of the optical fiber slot cover plate (73), a fixing groove (74) that fits with the limiting block is provided on the optical fiber fixing plate (71), and the limiting block is embedded in the fixing groove (74).

5. The handheld optical fiber cutting device with adjustable cutting angle according to claim 2, characterized in that: A mounting groove (12) is provided in the middle of the upper surface of the support base (1), the optical fiber tray (3) is rotatably mounted in the mounting groove (12), and a scale (13) is provided on the groove edge of the mounting groove (12).

6. The handheld optical fiber cutting device with adjustable cutting angle according to claim 5, characterized in that: The driving assembly (6) comprises a knob (61), the knob (61) being arranged on a support base (1) on one side of the empty slot (11) via a knob base (62), the knob (61) extending to an output end in the support base (1) being provided with a screw rod (63), the screw rod (63) being meshed and connected with a transmission gear (64), and the transmission gear (64) being meshed and connected with an annular tooth (31) on the lower surface of the optical fiber tray (3).

7. The handheld optical fiber cutting device with adjustable cutting angle according to claim 1, characterized in that: A cutting groove (41) is provided in the middle of the knife holder (4), a knife seat (42) is provided in the middle of the cutting groove (41), a blade placement groove (43) is provided on the knife seat (42), and the cutting knife (5) is installed in the blade placement groove (43).

8. The handheld optical fiber cutting device with adjustable cutting angle according to claim 7, characterized in that: A sliding block (44) is provided on one side of the tool holder (4), a sliding groove (14) which matches the sliding block (44) is opened on the side wall of the empty groove (11), and the sliding block (44) is embedded in the sliding groove (14).

9. The handheld optical fiber cutting device with adjustable cutting angle according to claim 1, characterized in that: An optical fiber storage box (8) is provided on the support base (1) located on one side of the empty slot (11).

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