CN109883461B - Method and device for manufacturing multilayer optical fiber strain disc - Google Patents
Method and device for manufacturing multilayer optical fiber strain disc Download PDFInfo
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Abstract
A device and a method for manufacturing a multilayer optical fiber strain disc belong to the technical field of optical fiber sensing. The device consists of six parts, namely a winding tool, an adjustable rotating shaft device, a glue coating device, a tension control device, a fiber supply device and a curing and packaging device. The design idea is as follows: synchronous winding of optical fibers on two sides is completed by matching the elastic disk with symmetrically designed winding tools, the consistent length of the wound optical fibers is ensured by coaxial rotation design, and simultaneous winding curing of multilayer optical fiber rings on two sides and bonding with the elastic disk are realized; in the winding process, the optical fiber coating control and the winding tension control are finished through auxiliary equipment such as a glue passing hole of the coating device, a tension control device and the like and by combining a corresponding manufacturing process method, so that the uniform balance of the coating of the optical fibers on two sides and the consistent winding tension are ensured. The device can achieve synchronous and consistent winding of the multilayer optical fibers on two sides, and simultaneously realize winding and curing of the optical fibers and bonding with the elastic disc in the manufacturing process of the multilayer optical fiber strain disc.
Description
Technical Field
The invention belongs to the technical field of optical fiber sensing, and particularly relates to a method and a device for manufacturing a multilayer optical fiber strain disc.
Background
The optical fiber sensing technology is a new technology developed from the middle of the last 70 th century, the photoelectronic technology and the optical fiber technology are developed at high speed in the following decades, the optical fiber sensing technology using the optical fiber as a sensitive element is also developed rapidly, and the application field is distributed in the aspects of industrial life. When the optical fiber is used as a sensing element, characteristic parameters of light waves transmitted in the optical fiber, such as amplitude, phase, wavelength, polarization state, mode and the like, are very sensitive to changes of external environment factors, and the optical fiber sensing technology measures the external environment to be measured by detecting the characteristic changes of the light transmitted in the optical fiber.
Compared with the traditional sensing technology, the optical fiber sensing technology has the unique characteristics of passivity, small size, light weight, electromagnetic interference resistance, electric insulation, corrosion resistance and the like, has the advantages of large dynamic range, wide working frequency band, high sensitivity, quick response, high precision, high linearity and the like, has very wide measuring objects, and can be used for measuring various physical quantities and chemical quantities such as temperature, pressure, displacement, speed, acceleration, current voltage, electromagnetic field, liquid concentration, nuclear radiation and the like. Therefore, the optical fiber sensing technology is popular with military and commercial fields of developed countries, and through the development of recent decades, the optical fiber sensing technology is an important research direction in the sensing field and has great application in the national production and living field.
The optical fiber strain disc is used as a common core elastic transduction element in an optical fiber sensor and is mainly used for an optical fiber sensing technology for measuring physical quantities such as acceleration, stress strain, pressure and the like. In the optical fiber sensor, the optical fiber strain disc mainly functions to convert external information to be measured (such as acceleration, pressure and the like) into strain information of optical fibers on the strain disc, and thus characteristic parameters (such as phase, polarization state, amplitude and the like) of light waves transmitted in the optical fibers are modulated. The sensing system utilizes the signal demodulation device to obtain optical characteristic parameter modulation information, and detects unknown external information to be measured through the linear response relation between the optical characteristic parameter change information and the external information to be measured. Structurally, the optical fibers adhered to the upper and lower surfaces of the optical fiber strain disc in symmetrical positions can form a push-pull structure, when the elastic disc is subjected to bending deformation caused by external influence, the optical fibers adhered to the upper and lower surfaces of the elastic disc generate tensile strain on one side and compressive strain on the other side to form a push-pull effect, so that the sensitivity of the sensor can be improved; the optical fiber strain disc has high intrinsic directivity response due to the plane geometric characteristics of the structure of the optical fiber strain disc, and can monitor signals with strong directivity at high precision. The optical fiber sensor taking the optical fiber strain disc as the transducer has the advantages of compact structure, simple manufacture, small volume, easy satisfaction of practical requirements, high sensitivity, intrinsic directivity and the like, can be conveniently developed into various sensors to pay attention, and is very common in industrial production and life.
In 1989, the american d.a.brown designed a fiber optic hydrophone with a push-pull strain disc structure and obtained outstanding results in practical tests, and on the basis of the design, an accelerometer based on the fiber optic strain disc structure was proposed in 1990, and a series of research results of the d.a.brown prove that the fiber optic strain disc has better application in the field of fiber optic sensing. A number of different fiber optic strain disc designs have been reported, differing primarily in the fixed support structure of the fiber optic strain disc, for example sandep t.vohra et al, 1994, which proposes a fiber optic accelerometer structure based on a single fiber optic strain disc that is fixed in a central fixed peripheral free manner (US 5903349). With the development of optical fiber sensing technology, the optical fiber adhered and wound on the optical fiber strain disc is gradually developed from a single-layer structure to a multi-layer structure, for example: in 2001, american Michael j.tweedy et al disclose an optical fiber displacement sensor using a multilayer optical fiber strain disc structure; jagdish Shah et al, Schlumberger technologies, Inc. 2005 proposed a method of manufacturing a high temperature fiber optic accelerometer (US20050016272A1), which relates to a method of manufacturing a multi-layer fiber strain disc by winding a multi-layer fiber ring with an optical fiber and bonding the ring with an elastic disc, but the method does not involve controlling the winding tension and the amount of wound glue. There are many methods for manufacturing optical fiber strain discs in domestic published documents, such as: wangmongjie et al, semiconductor institute of academy of sciences in 2006, proposed an optical fiber strain disc and its preparation method (CN101210833A), the optical fiber strain disc is made into an optical fiber disc by winding the optical fiber on the viscous bottom plate designed in advance, then the optical fiber disc is bonded with elastic disc and the viscous chassis is removed; the Wang Dongyun et al, university at Zhejiang, 2011, proposed a low-creep fiber optic disc for fiber optic accelerometers and a method for making the same (CN102507968B), wherein the fiber optic strain disc adopts a crystal disc with grooves engraved on the surface as an elastic disc sheet to position bare fibers without an outer coating layer, and a spin coating method is used to control the amount of glue used and ensure uniformity.
At present, the existing domestic data basically relates to the related technology for manufacturing single-layer optical fiber strain discs, and the related technology for manufacturing multi-layer optical fiber strain discs is rarely related. Because strain has an accumulation effect on the length of the optical fiber, that is, the strain accumulation effect is more as the strained optical fiber is longer, and the length of the strained optical fiber on the multilayer optical fiber strain disc is far longer than that of the strained optical fiber on the single-layer optical fiber strain disc, the sensitivity of the sensor adopting the multilayer optical fiber strain disc design is far higher than that of the sensor adopting the single-layer optical fiber strain design. With the improvement of the scientific and technical level, the performance requirements of various industries on the sensor are higher and higher, the improvement of the sensitivity of the sensor is the key point of the performance improvement, and the design of the multilayer optical fiber strain disc is an effective technology for improving the sensitivity of the sensor, so that the sensor adopting the design of the multilayer optical fiber strain disc is a future development trend.
Disclosure of Invention
The invention aims to provide a method and a device for manufacturing a multilayer optical fiber strain disc, which can achieve synchronous and consistent winding of multilayer optical fibers on two sides and realize the simultaneous manufacturing of the multilayer optical fiber strain disc by winding and curing optical fibers and bonding the optical fibers with an elastic disc.
The purpose of the invention is realized as follows:
a device for manufacturing a multilayer optical fiber strain disc comprises a winding tool 1, an adjustable rotating shaft device 2, a glue coating device 3, a tension control device 4, a fiber supply device 5 and a curing and packaging device; the winding tool 1 is fixedly arranged on a winding motor rotating shaft in the adjustable rotating shaft device 2 through a central cross-shaped shaft hole 118; the left fiber passing hole 331 and the right fiber passing hole 332 in the glue coating device 3 correspond to the horizontal tangential directions of the side centers of the left inner diameter limiting column base 112 and the right inner diameter limiting column base 132 in the winding tool 1 respectively; the left fiber passing hole 331 and the right fiber passing hole 332 in the glue coating device 3 are respectively aligned with the centers of the left and right chutes of the second fixed pulley 420 in the tension control device 4; the vertical central plane of the double-groove coaxial coil 510 in the fiber supply device 5 is aligned with the vertical central plane of the first fixed pulley 410 in the tension control device 4; the curing and packaging device is used for the curing process of winding the optical fiber, and all parts of the curing and packaging device are assembled and fixed with the winding tool 1 to package an uncured glue fiber mixture; the winding tool 1, the adjustable rotating shaft device 2, the glue coating device 3, the tension control device 4 and the fiber supply device 5 are fixed on the same operating platform, and the winding tool 1, the adjustable rotating shaft device 2, the glue coating device 3, the tension control device 4 and the fiber supply device 5 are sequentially arranged in the relative position relationship.
The winding tool 1 comprises a left baffle 110, a right baffle 130 and an elastic disc 120; the left baffle 110 and the right baffle 130 are of a symmetrical structure, and a left outer diameter limiting column base 111, a left inner diameter limiting column base 112, a right outer diameter limiting column base 131 and a right inner diameter limiting column base 132 which are distributed concentrically are arranged on the inner sides of the left baffle 110 and the right baffle 130 respectively, wherein the height of the inner diameter limiting column base is the thickness of a wound optical fiber, the diameter of the inner diameter limiting column base is the inner diameter of the wound optical fiber, and the diameter of the outer diameter limiting column base is the outer diameter of the; a left fiber inlet hole 113, a left fiber outlet hole 114, a left fiber inlet clamp 115 and a left fiber outlet clamp 116 are arranged on the outer side of the left baffle plate 110, and a right fiber inlet hole 133, a right fiber outlet hole 134, a right fiber inlet clamp 135 and a right fiber outlet clamp 136 are arranged on the outer side of the right baffle plate 130; the fiber outlet hole penetrates through the baffle and is externally tangent to the inner diameter limiting column base, the fiber inlet hole penetrates through the baffle and is internally tangent to the outer diameter limiting column base, the fiber inlet clamp is positioned near the fiber inlet hole, and the fiber outlet clamp is positioned near the fiber outlet hole; the outer diameter of the central threaded hole column 117 on the inner side of the left baffle plate 110 is the same as the diameter of the central threaded hole 137 of the right baffle plate 130 and the diameter of the central hole 121 of the elastic disc 120, the center on the outer side of the left baffle plate 110 is a cross-shaped shaft hole 118, and the elastic disc 120 and the right baffle plate 130 are sequentially assembled and fixed by the left baffle plate 110 through the central threaded hole column 117.
The adjustable rotating shaft device 2 comprises a transverse adjusting frame 210, a vertical adjusting frame 220, a winding motor 230 and a controller 240; the winding motor 230 is fixed on the vertical adjusting frame 220, the vertical adjusting frame 220 is fixed on the transverse adjusting frame 210, the controller 240 is connected with the winding motor 230 through an electric wire, the front end of the rotating shaft of the winding motor is in a cross shape, and the tail end of the rotating shaft of the winding motor is in a threaded column; the vertical displacement knob 221 on the vertical adjusting frame 220 is adjusted to enable the winding motor 230 to drive the winding tool 1 to move in the vertical direction, and the transverse displacement knob 211 of the transverse adjusting frame 210 is adjusted to drive the winding tool 1 to move horizontally and transversely.
The glue coating device 3 comprises a glue groove 310, an empty groove 320, a left fiber passing hole 331 and a right fiber passing hole 332; the left fiber inlet slit 311, the right fiber inlet slit 312, the left fiber outlet slit 313 and the right fiber outlet slit 314 are respectively arranged at two sides of the glue groove 310, and the left fiber inlet slit 311 and the right fiber inlet slit 312 are respectively aligned with the left fiber outlet slit 313 and the right fiber outlet slit 314; the empty groove 320 is vertically communicated and adjacent to the glue groove 310, the left fiber passing hole 331 and the right fiber passing hole 332 are consistent in size and are positioned on the side wall of the empty groove 320, wherein the left fiber passing hole 331 and the right fiber passing hole 332 are aligned with the center positions of the left fiber outlet seam 313 and the right fiber outlet seam 314, and the seam width is larger than the aperture; the glue groove 310, the empty groove 320, the left fiber passing hole 331 and the right fiber passing hole 332 are integrated and supported by the glue coating support 301, the left winding optical fiber 511 and the right winding optical fiber 512 enter the glue groove 310 through the left fiber entering slit 311 and the right fiber entering slit 312 respectively for glue coating, pass through the left fiber outlet slit 313 and the right fiber outlet slit 314 and enter the empty groove 320 for checking the glue coating condition, and finally, glue is uniformly coated on the surface of the optical fiber through the left glue passing hole 331 and the right glue passing hole 332 respectively.
The tension control device 4 includes a first fixed pulley 410, a second fixed pulley 420, a movable pulley 430, a hanging weight 431, a level gauge 432, a left tension compensation pulley 441 and a right tension compensation pulley 442; the first fixed pulley 410, the second fixed pulley 420 and the movable pulley 430 are double-groove pulleys, the movable pulley 430 is suspended between the first fixed pulley 410 and the second fixed pulley 420 through optical fibers, the projections of the first fixed pulley 410, the second fixed pulley 420 and the movable pulley 430 are externally tangent in the horizontal direction, the hanging weight 431 is suspended under the movable pulley 430, and the level gauge 432 is positioned above the movable pulley 430; the relative positions of the first fixed pulley 410, the second fixed pulley 420 and the movable pulley 430 enable the left winding optical fiber 511 and the right winding optical fiber 512 to be in a vertical stretching state under the gravity action of the hanging weight 431 and the movable pulley 430, when the movable pulley 430 is in a horizontal state, the tension of the left winding optical fiber 511 and the right winding optical fiber 512 is equal and approximately one fourth of the total weight of the hanging weight 431, the level gauge 432 and the movable pulley 430, and the weight of the hanging weight 431 is adjusted to control the tension of the left winding optical fiber 511 and the right winding optical fiber 512; the left tension compensation pulley 441 and the right tension compensation pulley 442 are respectively connected with the left side and the right side of the second fixed pulley bearing 421 through a left rotating bracket 443 and a right rotating bracket 444 and can rotate around the bearing 421, and a left rotating button 445 and a right rotating button 446 are respectively positioned on the left rotating bracket 443 and the right rotating bracket 444; when the left winding optical fiber 511 and the right winding optical fiber 512 are in different stretching states, the support angles of the left tension compensation pulley 441 and the right tension compensation pulley 442 on the left winding optical fiber 511 and the right winding optical fiber 512 are changed by adjusting the left knob 445 and the right knob 446, so that the movable pulley 430 is in a horizontal balance state, and the tensions applied to the left winding optical fiber 511 and the right winding optical fiber 512 are equal.
The left winding optical fiber 511 and the right winding optical fiber 512 of the fiber supply device 5 are respectively wound on the left coil slot and the right coil slot of the double-slot coaxial coil 510, the double-slot coaxial coil 510 is installed on the rotating shaft of the coil motor 520 and is driven by the coil motor 520 to rotate, and the coil motor 520 is connected with the controller 240 through an electric wire.
The curing and packaging device comprises a left upper half ring 611, a left lower half ring 612, a right upper half ring 621 and a right lower half ring 622; the left upper half ring 611, the left lower half ring 612, the right upper half ring 621 and the right lower half ring 622 are in the same shape, the main body is in a semi-circular ring shape, ears are arranged at two ends for fixing, the inner diameter of the main body is in the same diameter with the left and right outer diameter limiting pylons 111 and 131, and the thickness of the main body is equal to the sum of the heights of the outer diameter limiting pylons 111 and 131 and the inner diameter limiting pylons 112 and 132; the left upper half ring 611 and the left lower half ring 612 are assembled and fixed with the left baffle 110 in the winding tool 1; the right upper half ring 621 and the right lower half ring 622 are assembled and fixed with the right baffle 130 in the winding tool 1.
A method for manufacturing a multilayer optical fiber strain disc comprises
(1) Selecting an elastic disc sheet 120 according to the size of an optical fiber strain disc to be manufactured, cutting the length of a wound optical fiber, winding the optical fiber on the left and right coil grooves of the double-groove coaxial coil 510, and processing each part in the left baffle plate 110, the right baffle plate 130 and the curing and packaging device in the corresponding winding tool;
(2) uniformly coating a release agent on the inner side winding surfaces of the left baffle 110 and the right baffle 130 in the winding tool, and uniformly coating the release agent on the inner side packaging surfaces of the left upper half ring 611, the left lower half ring 612, the right upper half ring 621 and the right lower half ring 622 in the curing packaging device;
(3) assembling and fixing the left baffle 110, the right baffle 130 and the elastic disc 120, and installing the left baffle, the right baffle 130 and the elastic disc in the adjustable rotating shaft device 2, and finally installing the double-groove coaxial coil 510 in the fiber supply device 5;
(4) left winding optical fibers 511 and right winding optical fibers 512 led out by the double-groove coaxial coil 510 respectively pass through a left sliding groove and a right sliding groove of a first fixed pulley 410, a left sliding groove and a right sliding groove of a second fixed pulley 420, a left fiber inlet seam 311, a right fiber inlet seam 312, a left fiber outlet seam 313, a right fiber outlet seam 314, a left fiber passing hole 331 and a right fiber passing hole 332 in sequence, finally respectively enter winding areas on two sides of the winding tool 1, pass through the left fiber outlet hole 114 and the right fiber outlet hole 134 and are respectively fixed by a left fiber outlet clamp 116 and a right fiber outlet clamp 136;
(5) the horizontal and vertical positions of the winding tool 1 are adjusted through the transverse adjusting frame 210 and the vertical adjusting frame 220, so that the left winding optical fiber 511 and the right winding optical fiber 512 which penetrate out of the left fiber passing hole 331 and the right fiber passing hole 332 enter a winding area along the horizontal tangential direction of the side surfaces of the left inner diameter limiting column base 112 and the right inner diameter limiting column base 132;
(6) injecting the selected glue for winding into the glue tank 310 and enabling the glue solution to completely submerge the left winding optical fiber 511 and the right winding optical fiber 512, paying attention to avoiding bubbles during glue injection, opening the left fiber outlet clamp 116 and the right fiber outlet clamp 136 and pulling the left winding optical fiber 511 and the right winding optical fiber 512 until the starting point of glue coating of the optical fibers enters the winding position, wherein the multilayer optical fiber strain disc needs a long time for winding, so that the glue for winding is required to have a long curing time;
(7) a movable pulley 430 with a hanging weight 431 is hung on a left winding optical fiber 511 and a right winding optical fiber 512 between a first fixed pulley 410 and a second fixed pulley 420, the supporting angles of a left tension compensation pulley 441 and a right tension compensation pulley 442 on the left winding optical fiber 511 and the right winding optical fiber 512 are adjusted through a left knob 445 and a right knob 446, so that the movable pulley 430 is in a horizontal balance state, and the tensions of the left winding optical fiber 511 and the right winding optical fiber 512 are equal;
(8) the controller 240 is used for respectively controlling the rotating speed of the winding motor 230 and the rotating speed of the coil motor 520, so that the winding speed is accurately matched with the fiber supply speed, and the optical fiber is orderly wound. The optical fiber ring winding adopts a single-pole winding method, namely, the optical fiber is wound from an end point to the tail end along the clockwise direction or the anticlockwise direction according to the closest packing mode, in a winding tool, the optical fiber is wound from a fiber outlet hole, gradually approaches to an elastic disc sheet in the process of tight winding and finishes the first layer of winding, and when the second layer of winding is carried out, the optical fiber is gradually wound towards the tool direction from the elastic disc sheet, and then is wound outwards along the diameter direction layer by layer until the final winding is finished;
(9) the winding state of the optical fiber is continuously monitored in the winding process, the tension of the left winding optical fiber 511 and the tension of the right winding optical fiber 512 are ensured to be equal by observing the level gauge 432 and continuously adjusting the left tension compensation pulley 441 and the right tension compensation pulley 442, the glue coating condition of the winding optical fiber is observed by the empty groove 320, the position of the winding tool 1 is continuously adjusted by the transverse adjusting frame 210 and the vertical adjusting frame 220, and the winding optical fiber is ensured to penetrate out along the straight line direction of the glue passing hole;
(10) after winding is finished, the coating glue of the residual tail fiber is erased, the left and right winding tail fibers are fixed and removed from the device through the left fiber inlet hole 113 and the right fiber inlet hole 133 by using the left fiber inlet clamp 115 and the right fiber inlet clamp 135, all parts of the curing and packaging device are assembled with the winding tool 1, the die is removed after the winding glue is completely cured, and finally the manufacture of the multi-component optical fiber strain disc is finished.
The invention has the beneficial effects that:
(1) according to the manufacturing device of the multilayer optical fiber strain disc, the elastic disc is combined with the winding tool with a symmetrical structural design, and the winding curing of the optical fiber ring and the bonding with the elastic disc are simultaneously carried out by combining the auxiliary device and the manufacturing process method, so that the manufacturing of the push-pull type multilayer optical fiber strain disc is completed at one time;
(2) the device for manufacturing the multilayer optical fiber strain disc adopts the coaxial rotating device, and combines the glue passing hole in the glue coating device, the counter weight pulley of the winding tension control device and other devices to complete the functions of synchronous winding of optical fibers at two sides, glue coating control of the optical fibers, tension control of winding and the like, so that the same length, balanced glue coating and consistent tension of the wound optical fibers at two sides can be realized;
(3) according to the strain accumulation effect of the strain on the length of the optical fiber, namely the strain accumulation effect is more when the strained optical fiber is longer, compared with a single-layer optical fiber strain disc, the strain sensitivity of the optical fiber strain disc can be improved by adopting the design of a multilayer optical fiber strain disc;
(4) the invention realizes the manufacture of the multilayer optical fiber strain disc by means of the specially designed winding tool and combining the elastic disc, the winding tool is simple and flexible in design and easy to process, the corresponding winding tool can be designed according to different requirements, and the manufacturing process method of the multilayer optical fiber strain disc is simple and easy and is convenient to operate.
Drawings
FIG. 1 is a block diagram of a device for manufacturing a multi-layer optical fiber strain disc;
FIG. 2a is a left side view of a three-dimensional assembly structure of a winding tool and a curing and packaging device;
FIG. 2b is a right side view of a three-dimensional assembly structure of a winding tool and a curing and packaging device
FIG. 3 is a view showing the structure of the glue spreading device;
FIG. 4 is a view showing the construction of a tension control device;
FIG. 5 is a view showing a structure of a fiber winding;
FIG. 6a is an overall view of a multilayer optical fiber strain disc;
FIG. 6b is a planar view of a multi-layer optical fiber strain disk.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The invention provides a method and a device for manufacturing a multilayer optical fiber strain disc, which mainly comprise a winding tool, an adjustable rotating shaft device, a glue coating device, a tension control device, a fiber supply device and a curing and packaging device, and can realize simultaneous winding and curing of multilayer optical fibers on two sides and bonding with an elastic disc. The multilayer optical fiber strain disc is usually manufactured by adhering a wound multilayer optical fiber ring and an elastic disc. According to the multilayer optical fiber strain disc manufacturing device, the elastic disc is combined with the winding tool which is symmetrically designed, the synchronous winding of optical fibers on two sides is completed in the winding space formed between the surfaces of the two sides of the elastic disc and the tool, and the consistent length of the wound optical fibers is ensured through the coaxial rotation design; in the winding process, an auxiliary device is utilized and matched with a corresponding manufacturing method and a corresponding manufacturing process to finish the fine operation of the manufacturing process of the multilayer optical fiber strain disc, the glue passing hole design in the glue coating device is used for ensuring the uniform glue coating of the surface of the wound optical fiber and the balance of the glue amount for winding the optical fibers on two sides, and the tension control device is used for ensuring the consistency of the winding tension of the optical fibers on two sides. And finally, assembling the winding tool with a curing and packaging structure to realize the curing of the multilayer optical fibers on two sides and the bonding with the elastic disk. The device can achieve synchronous and consistent winding of the multilayer optical fibers on two sides, and simultaneously realize winding and curing of the optical fibers and bonding with the elastic disc in the manufacturing of the multilayer optical fiber strain disc.
For clearly illustrating the method and apparatus for manufacturing a multilayer optical fiber strain disc according to the present invention, the present invention will be further described with reference to the following examples and drawings, but the scope of the present invention should not be limited thereby. Before the multilayer optical fiber strain disc is manufactured, the device needs to be assembled and fixed correctly. As shown in fig. 1, 2, 3 and 4, the components are assembled and tightly fixed in the assembly manner described in the disclosure.
The assembling method comprises the following steps:
1) the left baffle 110 sequentially assembles and fixes the elastic disc 120 and the right baffle 130 to a winding tool through the central threaded hole 117. The winding motor 230 is fixed on the vertical adjusting frame 220, the vertical adjusting frame 220 is fixed on the horizontal adjusting frame 210, and the controller 240 is connected with the winding motor 230 through a wire to form the adjustable rotating shaft device 2. The winding tool 1 is fixedly arranged on a winding motor rotating shaft in the adjustable rotating shaft device 2 through a central cross-shaped shaft hole 118;
2) the movable pulley 430 is suspended between the first fixed pulley 410 and the second fixed pulley 420 through an optical fiber, the projections of the first fixed pulley 410, the second fixed pulley 420 and the movable pulley 430 in the horizontal direction are externally tangent, the hanging weight 431 is suspended under the movable pulley 430, and the level 432 is positioned above the movable pulley 430. The left tension compensation pulley 441 and the right tension compensation pulley 442 are respectively connected with the left side and the right side of the second fixed pulley bearing 421 through a left rotating bracket 443 and a right rotating bracket 444, and a left knob 445 and a right knob 446 are respectively positioned on the left rotating bracket 443 and the right rotating bracket 444;
3) the left fiber passing hole 331 and the right fiber passing hole 332 in the glue coating device 3 correspond to the horizontal tangential directions of the side centers of the left inner diameter limiting column base 112 and the right inner diameter limiting column base 132 in the winding tool 1 respectively. The left fiber passing hole 331 and the right fiber passing hole 332 in the glue coating device 3 are respectively aligned with the centers of the left and right chutes of the second fixed pulley 420 in the tension control device 4;
4) the left winding optical fiber 511 and the right winding optical fiber 512 are respectively wound on the left coil slot and the right coil slot of the double-slot coaxial coil 510, the double-slot coaxial coil 510 is installed on the rotating shaft of the coil motor 520, and the coil motor 520 is connected with the controller 240 through an electric wire. The vertical central plane of the double-groove coaxial coil 510 is aligned with the vertical central plane of the first fixed pulley 410 in the tension control device 4;
5) the curing and packaging device is used for curing the wound optical fiber, and the left upper half ring 611 and the left lower half ring 612 are assembled and fixed with the left baffle 110 in the winding tool 1. The right upper half ring 621 and the right lower half ring 622 are assembled and fixed with the right baffle 130 in the winding tool 1;
6) the winding tool 1, the adjustable rotating shaft device 2, the glue coating device 3, the tension control device 4 and the fiber supply device 5 are fixed on the same operating platform, and the winding tool 1, the adjustable rotating shaft device 2, the glue coating device 3, the tension control device 4 and the fiber supply device 5 are sequentially arranged in the relative position relationship.
The specification parameters of the key parts selected by the device are as follows:
the outer diameters of the left baffle 110 and the right baffle 130 are 70mm, the heights of the left inner diameter limiting column base 112 and the right inner diameter limiting column base 132 are 2mm, the diameters of the left inner diameter limiting column base 112 and the right inner diameter limiting column base 132 are 30mm, and the heights of the left outer diameter limiting column base 111 and the right outer diameter limiting column base 131 are 1mm, and the diameters of the left outer diameter limiting column base 111 and the right outer diameter limiting column; the elastic disc is made of beryllium bronze material, and has an outer diameter of 114mm, a central hole with an inner diameter of 12mm and a thickness of 0.5 mm;
the maximum displacement of the transverse adjusting frame 210 and the vertical adjusting frame 220 can be 200mm, and the minimum movable displacement is 1 um. The winding motor 230 and the coil motor 520 adopt pulse-driven stepping motors, and the rotating speed can be set according to the pulse frequency;
the glue coating device 3 is 50mm long, 30mm wide and 20mm high in whole, the glue groove 310 is 20mm long, 20mm wide and 15mm high, the empty groove 320 is 25mm long and 20mm wide, the left fiber inlet seam 311, the right fiber inlet seam 312, the left fiber outlet seam 313 and the right fiber outlet seam 314 are 12mm long and 0.5mm wide, and the left fiber passing hole 331 and the right fiber passing hole 332 are 0.25mm in diameter and 2.5mm apart;
the diameter of the wheel bodies of the first fixed pulley 410, the second fixed pulley 420 and the movable pulley 430 is 30mm, the distance between double grooves is 2.5mm, the horizontal distance between the first fixed pulley 410 and the second fixed pulley 420 is 60mm, the total weight of the hanging weight 431, the level gauge 432 and the movable pulley 430 is 40g, and the diameter of the wheel bodies of the left tension compensation pulley 441 and the right tension compensation pulley 442 is 10 mm;
the inner diameter and the thickness of the left upper half ring 611, the left lower half ring 612, the right upper half ring 621 and the right lower half ring 622 in the curing packaging device are 63mm and 3mm respectively;
the winding optical fiber is RC1310/80-21/165(RC1016-F) type small-diameter single-mode optical fiber, the diameter of the optical fiber is 80 mu m, and the outer diameter of the coating layer is 165 mu m; the winding size of the optical fiber is 12 turns per layer, and the number of the layers is 100;
the adhesive for winding selects FibKey 8218 two-component high-temperature-resistant epoxy resin adhesive and is matched with HD-915 epoxy resin release agent for use, the FibKey 8218 has good operability, the AB two-component mixing weight ratio is 10:1, the mixing operation time is more than 4 hours, the high-temperature curing is carried out, and the curing is carried out for 10 minutes at the curing temperature of 100 ℃.
The device is used for manufacturing the multilayer optical fiber strain disc as follows:
1) uniformly coating a release agent on the inner side winding surfaces of the left baffle 110 and the right baffle 130 in the winding tool, and uniformly coating the release agent on the inner side packaging surfaces of the left upper half ring 611, the left lower half ring 612, the right upper half ring 621 and the right lower half ring 622 in the curing packaging device;
2) assembling and fixing the left baffle 110, the right baffle 130 and the elastic disc 120, and installing the left baffle, the right baffle 130 and the elastic disc in the adjustable rotating shaft device 2, and finally installing the double-groove coaxial coil 510 in the fiber supply device 5;
3) left winding optical fibers 511 and right winding optical fibers 512 led out by the double-groove coaxial coil 510 respectively pass through a left sliding groove and a right sliding groove of a first fixed pulley 410, a left sliding groove and a right sliding groove of a second fixed pulley 420, a left fiber inlet seam 311, a right fiber inlet seam 312, a left fiber outlet seam 313, a right fiber outlet seam 314, a left fiber passing hole 331 and a right fiber passing hole 332 in sequence, finally respectively enter winding areas on two sides of the winding tool 1, pass through the left fiber outlet hole 114 and the right fiber outlet hole 134 and are respectively fixed by a left fiber outlet clamp 116 and a right fiber outlet clamp 136;
4) the horizontal and vertical positions of the winding tool 1 are adjusted through the transverse adjusting frame 210 and the vertical adjusting frame 220, so that the left winding optical fiber 511 and the right winding optical fiber 512 which penetrate out of the left fiber passing hole 331 and the right fiber passing hole 332 enter a winding area along the horizontal tangential direction of the side surfaces of the left inner diameter limiting column base 112 and the right inner diameter limiting column base 132;
5) mixing AB two components of FibKey 8218 according to the weight ratio of 10:1 and injecting the mixture into a glue tank 310 to enable glue liquid to completely submerge a left winding optical fiber 511 and a right winding optical fiber 512, paying attention to avoid generating bubbles, opening a left fiber outlet clamp 116 and a right fiber outlet clamp 136, and pulling the left winding optical fiber 511 and the right winding optical fiber 512 to the starting point of optical fiber glue coating to enter a winding position;
6) a movable pulley 430 with a hanging weight 431 is hung on a left winding optical fiber 511 and a right winding optical fiber 512 between a first fixed pulley 410 and a second fixed pulley 420, the supporting angles of a left tension compensation pulley 441 and a right tension compensation pulley 442 on the left winding optical fiber 511 and the right winding optical fiber 512 are adjusted through a left knob 445 and a right knob 446, so that the movable pulley 430 is in a horizontal balance state, and the tensions of the left winding optical fiber 511 and the right winding optical fiber 512 are equal;
7) the controller 240 is used for respectively controlling the rotating speed of the winding motor 230 and the rotating speed of the coil motor 520, so that the winding speed is accurately matched with the fiber supply speed, and the optical fiber is orderly wound. The optical fiber ring winding adopts a single-pole winding method, namely, the optical fiber is wound from an end point to the tail end along the clockwise direction or the anticlockwise direction according to the closest packing mode, in a winding tool, the optical fiber is wound from a fiber outlet hole, gradually approaches to an elastic disc sheet in the process of tight winding and finishes the first layer of winding, and when the second layer of winding is carried out, the optical fiber is gradually wound towards the tool direction from the elastic disc sheet, and then is wound outwards along the diameter direction layer by layer until the final winding is finished;
8) the winding state of the optical fiber is continuously monitored in the winding process, the tension of the left winding optical fiber 511 and the tension of the right winding optical fiber 512 are ensured to be equal by observing the level gauge 432 and continuously adjusting the left tension compensation pulley 441 and the right tension compensation pulley 442, the glue coating condition of the winding optical fiber is observed by the empty groove 320, the position of the winding tool 1 is continuously adjusted by the transverse adjusting frame 210 and the vertical adjusting frame 220, and the winding optical fiber is ensured to penetrate out along the straight line direction of the glue passing hole;
9) after winding is finished, coating glue on the residual tail fibers is erased, the left and right winding tail fibers are fixed through the left fiber inlet hole 113 and the right fiber inlet hole 133 by using the left fiber inlet clamp 115 and the right fiber inlet clamp 135, the residual tail fibers are removed from the device, all parts of the curing and packaging device and the winding tool 1 are assembled and fixed and placed at 100 ℃ for 10 minutes, the die is removed after the winding glue is completely cured, and finally the manufacture of the multi-component optical fiber strain disc is finished.
Claims (7)
1. The utility model provides a making devices of multilayer optical fiber strain disc which characterized in that: the device comprises a winding tool (1), an adjustable rotating shaft device (2), a glue coating device (3), a tension control device (4), a fiber supply device (5) and a curing and packaging device (6); the winding tool (1) is fixedly arranged on a winding motor rotating shaft in the adjustable rotating shaft device (2) through a central cross-shaped shaft hole (118); the left fiber passing hole (331) and the right fiber passing hole (332) in the glue coating device (3) respectively correspond to the horizontal tangential directions of the side centers of the left inner diameter limiting column platform (112) and the right inner diameter limiting column platform (132) in the winding tool (1); the left fiber passing hole (331) and the right fiber passing hole (332) in the glue coating device (3) are respectively aligned with the centers of the left and right sliding grooves of the second fixed pulley (420) in the tension control device (4); the vertical central plane of a double-groove coaxial coil (510) in the fiber supply device (5) is aligned with the vertical central plane of a first fixed pulley (410) in the tension control device (4); each part of the curing and packaging device (6) is assembled and fixed with the winding tool (1); the winding tool (1), the adjustable rotating shaft device (2), the glue coating device (3), the tension control device (4) and the fiber supply device (5) are fixed on the same operating platform, and the winding tool (1), the adjustable rotating shaft device (2), the glue coating device (3), the tension control device (4) and the fiber supply device (5) are sequentially arranged in a relative position relationship;
the winding tool (1) comprises a left baffle (110), a right baffle (130) and an elastic disc (120); the left baffle (110) and the right baffle (130) are of a symmetrical structure, the inner sides of the left baffle and the right baffle are respectively provided with a left outer diameter limiting column base (111), a left inner diameter limiting column base (112), a right outer diameter limiting column base (131) and a right inner diameter limiting column base (132), which are distributed concentrically, wherein the height of the inner diameter limiting column base is the thickness of a wound optical fiber, the diameter of the inner diameter limiting column base is the inner diameter of the wound optical fiber, and the diameter of the outer diameter limiting column base is the outer diameter of the wound optical fiber; a left fiber inlet hole (113), a left fiber outlet hole (114), a left fiber inlet clamp (115) and a left fiber outlet clamp (116) are arranged on the outer side of the left baffle (110), and a right fiber inlet hole (133), a right fiber outlet hole (134), a right fiber inlet clamp (135) and a right fiber outlet clamp (136) are arranged on the outer side of the right baffle (130); the left and right fiber outlet holes penetrate through the baffle and are circumscribed with the left and right inner diameter limiting pylons, the left and right fiber inlet holes penetrate through the baffle and are inscribed with the left and right outer diameter limiting pylons, the left and right fiber inlet clamps are positioned near the left and right fiber inlet holes, and the left and right fiber outlet clamps are positioned near the left and right fiber outlet holes; the outer diameter of a central threaded hole column (117) on the inner side of the left baffle (110) is the same as the diameter of a central threaded hole (137) of the right baffle (130) and the diameter of a central hole (121) of the elastic disc (120), the center of the outer side of the left baffle (110) is a cross-shaped shaft hole (118), and the elastic disc (120) and the right baffle (130) are sequentially assembled and fixed by the left baffle (110) through the central threaded hole column (117).
2. The apparatus for manufacturing a multilayer optical fiber strain disc according to claim 1, wherein: the adjustable rotating shaft device (2) comprises a transverse adjusting frame (210), a vertical adjusting frame (220), a winding motor (230) and a controller (240); the winding motor (230) is fixed on the vertical adjusting frame (220), the vertical adjusting frame (220) is fixed on the transverse adjusting frame (210), the controller (240) is connected with the winding motor (230) through an electric wire, the front end of a rotating shaft of the winding motor is cross-shaped, and the tail end of the rotating shaft of the winding motor is a threaded column; the vertical displacement knob (221) is positioned on the vertical adjusting frame (220), and the transverse displacement knob (211) is positioned on the transverse adjusting frame (210).
3. The apparatus for manufacturing a multilayer optical fiber strain disc according to claim 1, wherein: the glue coating device (3) comprises a glue groove (310), an empty groove (320), a left fiber passing hole (331) and a right fiber passing hole (332); the left fiber inlet seam (311), the right fiber inlet seam (312), the left fiber outlet seam (313) and the right fiber outlet seam (314) are respectively arranged at the two sides of the glue groove (310), and the left fiber inlet seam (311) and the right fiber inlet seam (312) are respectively aligned with the left fiber outlet seam (313) and the right fiber outlet seam (314); the empty groove (320) is vertically communicated and adjacent to the glue groove (310), the left fiber passing hole (331) and the right fiber passing hole (332) are consistent in size and are located on the side wall of the empty groove (320), the center positions of the left fiber passing hole (331) and the right fiber passing hole (332) are aligned with the center positions of the left fiber outlet seam (313) and the right fiber outlet seam (314), and the seam width is larger than the aperture; the glue groove (310), the empty groove (320), the left fiber passing hole (331) and the right fiber passing hole (332) are integrated and supported by the glue coating support (301), and the left winding optical fiber (511) and the right winding optical fiber (512) respectively enter the glue groove (310) through the left fiber entering seam (311) and the right fiber entering seam (312) to be coated with glue and pass through the left fiber outlet seam (313) and the right fiber outlet seam (314) to enter the empty groove (320).
4. The apparatus for manufacturing a multilayer optical fiber strain disc according to claim 1, wherein: the tension control device (4) comprises a first fixed pulley (410), a second fixed pulley (420), a movable pulley (430), a hanging weight (431), a level gauge (432), a left tension compensation pulley (441) and a right tension compensation pulley (442); the first fixed pulley (410), the second fixed pulley (420) and the movable pulley (430) are double-groove pulleys, and the movable pulley (430) is hung between the first fixed pulley (410) and the second fixed pulley (420) through an optical fiber; the projection of the first fixed pulley (410), the projection of the second fixed pulley (420) and the projection of the movable pulley (430) are circumscribed in the horizontal direction, a hanging weight (431) is hung under the movable pulley (430), and a level gauge (432) is positioned right above the movable pulley (430); the left tension compensation pulley (441) and the right tension compensation pulley (442) are respectively connected with the left side and the right side of the second fixed pulley bearing (421) through a left rotating bracket (443) and a right rotating bracket (444), and surround the bearing (421), and the left knob (445) and the right knob (446) are positioned on the left rotating bracket (443) and the right rotating bracket (444).
5. The apparatus for manufacturing a multilayer optical fiber strain disc according to claim 1, wherein: the fiber supply device (5) is characterized in that a left winding optical fiber (511) and a right winding optical fiber (512) are respectively wound on a left coil groove and a right coil groove of a double-groove coaxial coil (510), the double-groove coaxial coil (510) is installed on a rotating shaft of a coil motor (520) and is driven by the coil motor (520), and the coil motor (520) is connected with a controller (240) through an electric wire.
6. The apparatus for manufacturing a multilayer optical fiber strain disc according to claim 1, wherein: the curing and packaging device (6) comprises a left upper half ring (611), a left lower half ring (612), a right upper half ring (621) and a right lower half ring (622); the left upper half ring (611), the left lower half ring (612), the right upper half ring (621) and the right lower half ring (622) are in the same shape, the main body is in a semi-circular ring shape, ears are arranged at two ends of the main body for fixing, the inner diameter of the main body is in the same diameter with the left and right outer diameter limiting pylons (111, 131), and the thickness of the main body is equal to the sum of the heights of the outer diameter limiting pylons (111, 131) and the inner diameter limiting pylons (112, 132); the left upper half ring (611) and the left lower half ring (612) are assembled and fixed with a left baffle (110) in the winding tool (1); and the right upper half ring (621) and the right lower half ring (622) are assembled and fixed with the right baffle (130) in the winding tool (1).
7. A method for manufacturing a multilayer optical fiber strain disc is characterized by comprising the following steps:
step one, selecting an elastic disc (120) according to the size of an optical fiber strain disc to be manufactured, cutting the length of a wound optical fiber, winding the optical fiber to the left coil groove and the right coil groove of a double-groove coaxial coil (510), and processing each part in a left baffle (110), a right baffle (130) and a curing and packaging device (6) in a corresponding winding tool;
step two, uniformly coating a release agent on the inner side winding surfaces of a left baffle (110) and a right baffle (130) in the winding tool, and uniformly coating the release agent on the inner side packaging surfaces of a left upper half ring (611), a left lower half ring (612), a right upper half ring (621) and a right lower half ring (622) in the curing and packaging device (6);
step three, assembling and fixing the left baffle (110), the right baffle (130) and the elastic disc (120), installing the left baffle, the right baffle and the elastic disc in the adjustable rotating shaft device (2), and finally installing the double-groove coaxial coil (510) in the fiber supply device (5);
fourthly, respectively enabling left winding optical fibers (511) and right winding optical fibers (512) led out by the double-groove coaxial coil (510) to sequentially pass through a left sliding groove and a right sliding groove of a first fixed pulley (410), a left sliding groove and a right sliding groove of a second fixed pulley (420), a left fiber inlet seam (311), a right fiber inlet seam (312), a left fiber outlet seam (313), a right fiber outlet seam (314), a left fiber passing hole (331) and a right fiber passing hole (332), finally respectively entering winding areas on two sides of the winding tool (1), passing through the left fiber outlet hole (114) and the right fiber outlet hole (134), and respectively being fixed by the left fiber outlet clamp (116) and the right fiber outlet clamp (136);
fifthly, adjusting the horizontal and vertical positions of the winding tool (1) through the transverse adjusting frame (210) and the vertical adjusting frame (220) to enable the left winding optical fiber (511) and the right winding optical fiber (512) penetrating through the left fiber passing hole (331) and the right fiber passing hole (332) to enter a winding area along the horizontal tangential direction of the side surfaces of the left inner diameter limiting column platform (112) and the right inner diameter limiting column platform (132);
injecting the selected glue for winding into a glue tank (310) and enabling the glue to completely submerge the left winding optical fiber (511) and the right winding optical fiber (512), and opening the left fiber discharging clamp (116) and the right fiber discharging clamp (136) and pulling the left winding optical fiber (511) and the right winding optical fiber (512) to an optical fiber glue coating starting point to enter a winding position when paying attention to avoiding bubbles during glue injection;
step seven, a movable pulley (430) with a hanging weight (431) is hung on a left winding optical fiber (511) and a right winding optical fiber (512) between a first fixed pulley (410) and a second fixed pulley (420), and the support angles of the left tension compensation pulley (441) and the right tension compensation pulley (442) on the left winding optical fiber (511) and the right winding optical fiber (512) are adjusted through a left knob (445) and a right knob (446), so that the movable pulley (430) is in a horizontal balance state, and the tensions of the left winding optical fiber (511) and the right winding optical fiber (512) are equal;
step eight, respectively controlling the rotating speed of a winding motor (230) and the rotating speed of a coil motor (520) through a controller (240), realizing the accurate matching of the winding speed and the fiber supply speed, and further finishing the ordered winding of the optical fibers; the optical fiber ring winding adopts a single-pole winding method, the optical fiber is wound from an end point to the tail end along the clockwise direction or the anticlockwise direction according to the closest packing mode, in a winding tool, the optical fiber is wound from a fiber outlet hole, gradually approaches to an elastic disc sheet in the process of tight winding and finishes the first layer of winding, and when the second layer of winding is carried out, the optical fiber is gradually wound towards the tool direction from the elastic disc sheet, and then outwards winds layer by layer along the diameter direction until the final winding is finished;
step nine, continuously monitoring the winding state of the optical fiber in the winding process, continuously adjusting a left tension compensation pulley (441) and a right tension compensation pulley (442) through an observation level gauge (432) to ensure that the tension of the left winding optical fiber (511) and the tension of the right winding optical fiber (512) are equal, observing the glue coating condition of the winding optical fiber through an empty groove (320), continuously adjusting the position of a winding tool (1) through a transverse adjusting frame (210) and a vertical adjusting frame (220), and ensuring that the winding optical fiber penetrates out along the straight line direction of a glue passing hole;
step ten, after winding is finished, the coating glue of the residual tail fibers is erased, the left and right winding tail fibers are fixed and removed from the device through a left fiber inlet hole (113) and a right fiber inlet hole (133) by utilizing a left fiber inlet clamp (115) and a right fiber inlet clamp (135), all parts of the curing and packaging device (6) are assembled with the winding tool (1), the die is removed after the winding glue is completely cured, and finally the manufacture of the multi-element optical fiber strain disc is finished.
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| CN114226182B (en) * | 2021-11-26 | 2023-07-14 | 上海航天控制技术研究所 | Optical fiber strain sensor laying and positioning device for circular section tubular beams |
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| JPH1184191A (en) * | 1997-09-08 | 1999-03-26 | Fujikura Ltd | Intertwining method for filamentary body having irregular section |
| US7155101B2 (en) * | 2003-05-13 | 2006-12-26 | Schlumberger Technology Corporation | Manufacturing method for high temperature fiber optic accelerometer |
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