Optical fiber expansion compensation device

Abstract

The utility model belongs to an optical fiber laser, and provides an optical fiber expansion compensation device, which comprises an optical fiber disc base provided with an optical fiber movable seat and an optical fiber limiting seat. The optical fiber movable seat and the optical fiber limiting seat are arranged on the same loop line and are used for penetrating and coiling an optical fiber; the optical fiber movable seat is provided with a groove, the movement allowance of the optical fiber is preset in the groove, and the bending radius threshold value refers to a bending radius range in which an armored hose of the optical fiber and a fiber core are kept relatively static. According to the utility model, through the unique arrangement relation of the optical fiber limiting seat and the optical fiber movable seat, the optical fiber can be naturally bent and coiled in multiple layers, and through the optical fiber movable allowance groove arranged on the optical fiber movable seat, the optical fiber cannot be directly straightened, so that the relative displacement between the compensation fiber core and the spiral armor hose is realized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of fiber laser, especially relates to a fiber telescopic compensation device. BACKGROUND

[0002] Fiber laser has been widely used in industrial processing, medical treatment, scientific research and other fields due to its high efficiency, long service life, easy maintenance and other characteristics. One of the key components of fiber laser is optical fiber, which not only carries the transmission of laser energy, but also directly affects the quality of laser output. In order to protect the optical fiber from the influence of external environment, a layer or more protective materials will be wrapped outside the optical fiber to form so-called fiber cable. Typical fiber cable mainly includes the following parts: fiber core as the core medium of optical signal transmission; spiral armor hose made of metal wire or high-strength plastic and other materials, arranged in spiral shape to provide effective mechanical protection for optical fiber; outer sheath provides additional protection, enhances the flexibility and durability of the overall structure.

[0003] However, in actual use, especially in fiber laser, the fiber cable may be subjected to external force. In this case, the fiber core may be displaced relative to the spiral armor hose, causing the optical fiber in the fiber laser to be pulled and unable to maintain a natural curved state. This phenomenon will adversely affect the performance of the fiber laser, specifically manifested as a decrease in beam quality: the optical fiber is subjected to additional bending or tensile stress in a non-natural state, which may cause changes in the propagation characteristics of light in the optical fiber, increase the loss, change the mode field distribution, and thus affect the quality of the output light beam.

[0004] Therefore, how to compensate for the relative displacement between the fiber core and the spiral armor hose to improve the beam quality is a technical problem to be solved by those skilled in the art. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of fiber telescopic compensation device, to solve the technical problem of relative displacement between fiber core and spiral armor hose in prior art:

[0006] To achieve the above-mentioned purpose, the specific technical scheme of the utility model is as follows:

[0007] A kind of fiber telescopic compensation device, including fiber disc base, the fiber disc base is provided with fiber movable seat, fiber limiting seat;The fiber movable seat and the fiber limiting seat are arranged on the same ring line, for passing through and coiling optical fiber;The fiber movable seat is provided with recess, the recess is pre-set with the activity margin of the optical fiber, the bending radius threshold indicates that the armored hose of the optical fiber and the fiber core remain relatively stationary, the bending radius range of the optical fiber.

[0008] Preferably, the optical fiber movable seats are arranged in pairs and mirror images, and the optical fiber limiting seats are arranged in pairs and mirror images; the connecting lines of the optical fiber movable seats arranged in pairs and mirror images are perpendicular to the connecting lines of the optical fiber limiting seats arranged in pairs and mirror images.

[0009] Preferably, the connecting lines of the optical fiber movable seats arranged in pairs and mirror images are equal in length to the connecting lines of the optical fiber limiting seats arranged in pairs and mirror images.

[0010] Preferably, the optical fiber movable seat comprises a buckle assembly fixedly arranged; the buckle assembly comprises a locking part and a buckle part which are matched with each other; the locking part is fixedly arranged on the optical fiber disc base; the groove is arranged on the locking part; and when the locking part is matched with the buckle part, the groove is located between the locking part and the buckle part.

[0011] Preferably, the buckle part comprises a deformation end and a clamping head end; the locking part comprises a connecting end and a clamping groove end; the deformation end of the buckle part is fixed on the connecting end of the locking part; and the clamping head end of the buckle part is matched with the clamping groove end of the locking part.

[0012] Preferably, the deformation end is provided with a through groove, and the clamping head of the clamping head end is in a U shape.

[0013] Preferably, the optical fiber limiting seat comprises a first limiting part and a second limiting part; the first limiting part and the second limiting part are in a C shape.

[0014] Preferably, the first limiting part is arranged opposite to and offset from the second limiting part; and a gap for arranging an optical fiber is formed between the first limiting part and the second limiting part.

[0015] Preferably, the utility model also comprises an optical fiber sleeve, an optical fiber sleeve clamp and an optical fiber connector; the optical fiber sleeve clamp is arranged on the inner side of the fiber outlet of the side wall of the optical fiber disc base and clamps the optical fiber sleeve; the optical fiber connector is arranged on the fiber outlet and sleeves the optical fiber sleeve; and the optical fiber passes through the optical fiber sleeve.

[0016] Preferably, the optical fiber sleeve clamp comprises a lower clamp block fixedly arranged and an upper clamp block connected to the lower clamp block through a bolt.

[0017] The utility model has the following effects:

[0018] Through the unique arrangement relationship between the optical fiber limiting seat and the optical fiber movable seat, the optical fiber can be naturally bent and wound in multiple layers; and through the optical fiber expansion allowance groove arranged in the optical fiber movable seat, when the optical fiber is stretched, the optical fiber will not be directly straightened, so that the relative displacement between the fiber core and the spiral armor hose is compensated, and the light beam quality is improved.

[0019] Through the buckle type design of the optical fiber movable seat, the optical fiber is quickly installed.

[0020] Through the combination of the fiber sleeve clamp, the optical fiber connector and the optical fiber sleeve, the optical fiber is protected from being damaged. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a specific structure schematic view of the optical fiber telescopic compensation device of the utility model;

[0022] Figure 2 It is a top view of the optical fiber telescopic compensation device of the utility model;

[0023] Figure 3 It is a specific structure schematic view of the optical fiber movable seat of the utility model;

[0024] Figure 4 It is a specific structure schematic view of the optical fiber limiting seat of the utility model;

[0025] Figure 5 It is a specific structure schematic view of the optical fiber sleeve clamp of the utility model;

[0026] Figure 6 It is a position distribution schematic view of the optical fiber limiting seat and the optical fiber movable seat of the utility model;

[0027] Figure 7 It is a coiled state view of the optical fiber of the utility model;

[0028] Figure 8 It is a specific structure schematic view of another embodiment of the utility model;

[0029] Reference signs: 1, optical fiber disc base; 2, optical fiber movable seat; 3, optical fiber limiting seat; 4, optical fiber sleeve clamp; 5, optical fiber connector; 6, optical fiber sleeve; 7, alarm monitoring assembly;

[0030] 2-1, buckle part; 2-2, locking part; 2-3, clamping head end; 2-4, clamping groove end; 2-5, deformation end; 2-6, through groove;

[0031] 3-1, first limiting part; 3-2, second limiting part; 3-3, gap for optical fiber;

[0032] 4-1, upper clamp block; 4-2, lower clamp block; DETAILED DESCRIPTION

[0033] In order to better understand the purpose, structure and function of the utility model, the utility model will be further described in detail in combination with the drawings.

[0034] In the description of the utility model, it is necessary to understand that the terms "ring line", "straight line", "symmetrical axis" and the like are only simplified descriptions of the orientation or positional relationship shown in the drawings, and are not indicative or suggestive of the actual presence or drawing, and therefore cannot be understood as a limitation on the utility model.

[0035] In the utility model, unless otherwise expressly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements, for ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0036] The utility model discloses a kind of optical fiber telescopic compensation devices, as shown in Figure 1 It includes optical fiber disc base 1, the optical fiber disc base 1 is provided with optical fiber movable seat 2, optical fiber limiting seat 3;The optical fiber movable seat 2 with the optical fiber limiting seat 3 is arranged on the same ring line, for passing and coiling optical fiber;The optical fiber movable seat 2 is recessed, and the recess is pre-set with the movable allowance of the optical fiber, for guaranteeing the bending radius of the optical fiber changes between bending radius threshold value, the bending radius threshold value refers to when the optical fiber is pulled or bent, the armored flexible tube of the optical fiber and core still keep relative stationary optical fiber bending radius range. Among them, the optical fiber movable seat 2 is used to give the movable allowance of optical fiber;The optical fiber limiting seat 3 is used to guide the movement of optical fiber;The utility model passes through the unique setting relationship of optical fiber movable seat 2 and optical fiber limiting seat 3, so that optical fiber can be naturally bent and coiled, and through the recess of optical fiber movable seat 2, so that optical fiber will not be directly straightened, realize that relative displacement occurs between compensation core and spiral armoring flexible tube, improve optical beam quality.

[0037] Example 1:

[0038] Specifically, as shown in Figures 1 to 7 A kind of optical fiber telescopic compensation device, including optical fiber disc base 1, the optical fiber disc base 1 is provided with optical fiber movable seat 2, optical fiber limiting seat 3, optical fiber sleeve 6, optical fiber sleeve clamp 4 and optical fiber connector 5;

[0039] The optical fiber disc base 1 includes bottom plate and the side wall being arranged at the periphery of bottom plate, and the optical fiber disc base 1 is fixed on water-cooled plate.

[0040] The optical fiber movable seat 2 and the optical fiber limiting seat 3 are arranged on the same ring line, the optical fiber movable seats 2 are arranged in pairs and in mirror image, the optical fiber limiting seats 3 are arranged in pairs and in mirror image, the connecting lines between the optical fiber movable seats 2 arranged in pairs and in mirror image and the connecting lines between the optical fiber limiting seats 3 arranged in pairs and in mirror image are perpendicular to each other and bisect each other, that is, to ensure that the optical fiber wound on the optical fiber movable seat 2 and the optical fiber limiting seat 3 forms an elliptical or circular winding, and to realize that the optical fiber of different specifications and models can be naturally bent; wherein the connecting line refers to a straight line on the shortest path between the two optical fiber movable seats or the two optical fiber limiting seats arranged in pairs. The optical fiber movable seat 2 is provided with a groove, and the groove is used to provide a movable space for the optical fiber, that is, the optical fiber can be wound in multiple turns, and when the optical fiber is stretched, the optical fiber has a movable amount in the groove and will not be directly limited to cause the optical fiber to be straightened, thus realizing compensation for the relative displacement between the fiber core and the spiral armor hose. Most preferably, the connecting line of the optical fiber movable seat 2 arranged in pairs and in mirror image is equal to the connecting line of the optical fiber limiting seat 3 arranged in pairs and in mirror image, that is, the optical fiber forms a circular winding. It is worth noting that since the two ends of the optical fiber are fixedly connected to other components during use, it is difficult for the prior art to provide sufficient space for the expansion of the optical fiber. Compared with other prior arts, the present technical solution allows the optical fiber to be wound in multiple layers in a small space, and when the optical fiber is stretched, the wound optical fiber can move loosely in the groove, thereby avoiding the relative displacement between the fiber core and the spiral armor hose.

[0041] Further, in order to facilitate the rapid winding of the optical fiber and reduce the space occupancy, as shown in Figure 3 The optical fiber movable seat 2 includes a fixedly arranged buckle assembly; the buckle assembly includes a locking part 2-2 and a buckle part 2-1 that are matched with each other, the locking part 2-2 is fixedly arranged on the optical fiber disc base 1, and the groove is arranged on the locking part 2-2, and the groove is located between the locking part 2-2 and the buckle part 2-1 when the locking part 2-2 is buckled with the buckle part 2-1. The buckle part 2-1 includes a deformation end 2-5 and a clamping head end 2-3; the locking part 2-2 includes a connecting end and a clamping groove end 2-4; the deformation end 2-5 of the buckle part 2-1 is fixed to the connecting end of the locking part 2-2, and the clamping end of the buckle part 2-1 is matched with the clamping groove of the locking part 2-2. Most preferably, the buckle part 2-1 is a cantilever special-shaped buckle part 2-1, the deformation end 2-5 is provided with a through groove 2-6, and the clamping head of the clamping head end 2-3 is U-shaped.

[0042] Further, as shown in Figure 4As shown, the optical fiber limiting seat 3 comprises a first limiting part 3-1 and a second limiting part 3-2, and a gap 3-3 for the optical fiber is formed between the first limiting part 3-1 and the second limiting part, so as to realize the rapid winding of the optical fiber and reduce the space occupancy. Preferably, the first limiting part 3-1 is opposite to the second limiting part 3-2 and is arranged in a staggered manner, and the first limiting part 3-1 and the second limiting part 3-2 are in a C shape. The gap 3-3 for the optical fiber comprises the openings of the first limiting part 3-1 and the second limiting part and the gap space between the two limiting parts. When the optical fiber is put in, the part of the optical fiber is gently bent into a Z shape, and the two ends of the Z-shaped optical fiber are respectively put in from the openings between the two limiting parts, and the middle section is put in from the gap space, so as to realize the convenient winding and taking out of the optical fiber.

[0043] Further, as shown in Figures 1 to 5 The optical fiber sleeve clamp 4 is arranged on the inner side of the fiber outlet of the side wall of the optical fiber disc base 1 and clamps the optical fiber sleeve 6. The optical fiber connector 5 is arranged on the fiber outlet, and the optical fiber sleeve 6 is sleeved in the optical fiber connector 5. The optical fiber passes through the optical fiber sleeve 6. The combination of the optical fiber sleeve clamp 4, the optical fiber connector 5 and the optical fiber sleeve 6 is arranged to protect the optical fiber from being damaged. Preferably, the optical fiber sleeve clamp 4 comprises a fixedly arranged lower clamp block 4-2 and an upper clamp block 4-1 connected to the lower clamp block 4-2 by a bolt, so as to fix different models and sizes of optical fibers and reduce the space occupancy. The two ends of the optical fiber are respectively connected to the collimated light output interface and the resonant cavity through two fiber outlets.

[0044] Further, the bottom plate of the optical fiber disc base 1 is further provided with an alarm monitoring assembly 7 located on one side of the optical fiber. The alarm monitoring assembly 7 is used for monitoring the divergence of the optical fiber when the laser works, so as to stop the light in time when the laser fails and avoid causing greater loss.

[0045] Embodiment 2

[0046] Based on the embodiment 1, the total number of the optical fiber movable seats 2 and the optical fiber limiting seats 3 can be an odd number, for example Figure 8 As shown, the optical fiber limiting seat 3 is 1, the optical fiber movable seats 2 are 2, the optical fiber movable seats 2 are arranged in a mirror image symmetry, and the optical fiber limiting seat 3 is arranged on the symmetry line of the mirror image symmetry of the optical fiber movable seats 2.

[0047] The use mode of the technical solution is as follows:

[0048] When in use, the buckle is opened by pressing the U-shaped clamping head and pulling the buckle outward, the deformed end 2-5 of the buckle is deformed, then the optical fiber is placed in the groove of the optical fiber movable seat 2 and the optical fiber limiting seat 3, the optical fiber is naturally bent and wound in multiple layers, then the buckle is locked to limit the vertical movement of the optical fiber, the two ends of the optical fiber are respectively pulled out from the two fiber outlets, when the optical fiber is pulled, the optical fiber limiting seat 3 ensures the stable movement of the optical fiber, since the optical fiber has a movable allowance in the groove, the optical fiber will not be straightened to cause the relative displacement between the fiber core and the spiral armor hose.

[0049] Therefore, the optical fiber can be naturally bent and wound in multiple layers through the unique setting relationship of the optical fiber movable seat 2 and the optical fiber limiting seat 3, the optical fiber will not be directly straightened when the optical fiber is stretched through the optical fiber expansion allowance groove arranged in the optical fiber movable seat 2, so that the relative displacement between the fiber core and the spiral armor hose is compensated. The optical fiber is quickly installed through the buckle type design of the optical fiber movable seat 2, the optical fiber is protected from being damaged through the combined setting of the fiber sleeve clamp, the optical fiber connector 5 and the optical fiber sleeve 6.

[0050] It can be understood that the utility model is described through some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the scope protected by the utility model.

Claims

1. An optical fiber stretch compensating device, characterized by: Including the optical fiber disc base (1), the optical fiber disc base (1) is provided with optical fiber movable seat (2), optical fiber limiting seat (3); The optical fiber movable seat (2) and the optical fiber limiting seat (3) are arranged on the same ring line, and are used for passing through and winding the optical fiber; The optical fiber movable seat (2) is provided with a groove, and the groove is provided with an activity allowance of the optical fiber, so as to ensure that the bending radius of the optical fiber changes between the bending radius threshold.

2. A fiber optic stretch compensating device as set forth in claim 1, wherein: The optical fiber movable seat (2) is arranged in pairs and mirror image, and the optical fiber limiting seat (3) is arranged in pairs and mirror image; The connecting line of the optical fiber movable seat (2) arranged in pairs and mirror image is perpendicular to the connecting line of the optical fiber limiting seat (3) arranged in pairs and mirror image.

3. A fibre optic stretch compensating device according to claim 2, characterised in that: The connecting line between the optical fiber movable seat (2) arranged in pairs and mirror image is equal in length to the connecting line of the optical fiber limiting seat (3) arranged in pairs and mirror image.

4. A fibre stretch compensating device according to any one of claims 1 to 3, characterised in that: The optical fiber movable seat (2) comprises a fixedly arranged buckle assembly; The buckle assembly comprises a locking part (2-2) and a buckle part (2-1) which are matched with each other, the locking part (2-2) is fixedly arranged on the optical fiber disc base (1), and the groove is arranged on the locking part (2-2).

5. A fibre stretch compensating device according to claim 4, characterised in that: The buckle part (2-1) comprises a deformation end (2-5) and a clamping head end (2-3), and the locking part (2-2) comprises a connecting end and a clamping groove end (2-4); The deformation end (2-5) of the buckle part (2-1) is fixed on the connecting end of the locking part (2-2), and the clamping end of the buckle part (2-1) is matched with the clamping groove of the locking part (2-2).

6. A fibre stretch compensating device according to claim 5, characterised in that: The deformation end (2-5) is provided with a through groove (2-6), and the clamping head of the clamping head end (2-3) is U-shaped.

7. A fibre stretch compensating device according to any one of claims 1 to 3, characterised in that: The optical fiber limiting seat (3) comprises a first limiting part (3-1) and a second limiting part (3-2) arranged oppositely, and the first limiting part (3-1) and the second limiting part (3-2) are C-shaped.

8. A fibre stretch compensating device according to claim 7, characterised in that: The first limiting part (3-1) and the second limiting part (3-2) are arranged in a staggered manner, and a gap (3-3) for placing the optical fiber is formed between the first limiting part (3-1) and the second limiting part (3-2).

9. The optical fiber expansion compensation device of claim 1, wherein: It also includes an optical fiber sleeve (6), an optical fiber sleeve clamp (4) and an optical fiber connector (5); The optical fiber sleeve clamp (4) is arranged on the inner side of the fiber outlet of the side wall of the optical fiber disc base (1) and clamps the optical fiber sleeve (6); The optical fiber connector (5) is arranged on the fiber outlet, and the optical fiber sleeve (6) is sleeved in the optical fiber connector (5); The optical fiber passes through the optical fiber sleeve (6).

10. A fibre stretch compensating device according to claim 9, characterised in that: The optical fiber sleeve clamp (4) comprises a fixedly arranged lower clamp block (4-2) and an upper clamp block (4-1) connected to the lower clamp block (4-2) by bolts.

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