Tension control device of optical fiber winding machine

Abstract

The utility model discloses a tension control device of an optical fiber winding machine, which is characterized by comprising a base, and a fiber supply disc, a tension mechanism and two vertical roll shafts are sequentially arranged on the base. The lower ends of the two vertical roll shafts are rotationally matched with the base and are close to each other; the tension mechanism comprises a fixing frame, two fixed wheels, a floating wheel, a floating seat, a vertical guide rail and an air cylinder, the two fixed wheels are arranged on the fixing frame in a spaced mode, the vertical guide rail is fixed to the fixing frame and located between the two fixed wheels, the floating seat is in sliding fit with the vertical guide rail, and the air cylinder is vertically installed on the fixing frame. The output end of the air cylinder is connected with the floating seat, and the floating wheel is installed on the floating seat. The air cylinder is connected with an air pressure system; the tension adjusting device has the advantages of being small in occupied space, not affected by the output direction, capable of keeping constant after the tension is set, fast in adjusting response, small in fluctuation, convenient to adjust the tension and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of tension control device of fiber winding machine. BACKGROUND

[0002] Optical fiber gyroscope is currently the core component of military optical fiber inertial navigation system in our country, and is widely used in positioning and orientation system, attitude heading control system, compass system, guidance and navigation control system of equipment such as tactical weapon, strategic missile, military aircraft, warship, armored vehicle, carrier platform, spacecraft, rocket, etc. In the fields of automatic driving, unmanned aerial vehicle, intelligent robot, high-speed rail, oil and coal mine exploration, etc. in civilian market, it is also widely used.

[0003] Full-automatic fiber winding machine is the core equipment for producing polarization maintaining fiber ring for optical fiber gyroscope, and the polarization maintaining fiber ring is the most core device of optical fiber gyroscope. The precision, automation degree and process technology level of fiber winding machine equipment determine the performance and production efficiency of polarization maintaining fiber ring. Full-automatic fiber winding machine technology has become an essential key technology in the process of developing and producing optical fiber gyroscope. The tension control device is an important functional component of fiber winding machine. The control precision of tension control device on online tension in the process of winding fiber determines the stress uniformity and symmetry of fiber ring, and directly affects the full-temperature zero-bias performance of fiber ring.

[0004] The common tension control device of fiber winding machine currently adopts the mode of combining tension spring and pressure sensor to control fiber tension. The tension spring force acts on a guide wheel swing lever, so that the guide wheel swing lever swings within a certain range under the action of the tension spring force, and a relatively constant tension is applied to the fiber. This scheme requires multiple turns of fiber, and the number of guide wheels is generally not less than 5. The large number of guide wheels increases the additional torsion and friction of the fiber. The response bandwidth of the tension spring is also relatively low, and is greatly affected by the output direction. The response of the tension size is slow, which affects the control precision of fiber tension, and the fiber tension fluctuation is large, generally less than 0.5g. Due to the large number of guide wheels, a swing mechanism must be configured, resulting in a large overall size of the tension control device, generally not less than 300mm long x 150mm wide x 120mm high. Therefore, the existing full-automatic fiber winding machine has a large size, high equipment manufacturing cost and large floor area. CONTENT OF THE UTILITY MODEL

[0005] The utility model provides a kind of tension control device of fiber winding machine to solve the problems of large overall size, slow response, being affected by output direction and large fluctuation in the prior art.

[0006] In order to achieve the above object, the utility model technical scheme is as follows: a tension control device of optical fiber winding machine, characterized by comprising a base, a fiber supply disc, a tension mechanism and two vertical roller shafts are sequentially arranged on the base, the lower ends of the two vertical roller shafts are rotatably connected with the base and are arranged close to each other, the tension mechanism comprises a fixing frame, two fixed wheels, a floating wheel, a floating seat, a vertical guide rail and a pneumatic cylinder, the two fixed wheels are arranged on the fixing frame at intervals, the vertical guide rail is fixed on the fixing frame and is located between the two fixed wheels, the floating seat is slidably connected with the vertical guide rail, the pneumatic cylinder is vertically installed on the fixing frame, the output end of the pneumatic cylinder is connected with the floating seat, and the floating wheel is installed on the floating seat; the pneumatic cylinder is connected with a gas pressure system.

[0007] Further, the base comprises a main block and a side block, the upper side of the main block is provided with a concave cavity, the lower end of the fixing frame is fixedly connected with the inner bottom surface of the concave cavity, a rotating seat is fixedly arranged in the concave cavity, and the fiber supply disc is rotatably connected with the rotating seat; the side block is fixed on the outer side wall of the main block and is away from the fiber supply disc; the lower ends of the two vertical roller shafts are rotatably connected with the side block.

[0008] Further, a transmission shaft is rotatably installed on the rotating seat, one end of the transmission shaft is connected with the fiber supply disc, and the other end of the transmission shaft is connected with the output end of a fiber supply motor.

[0009] Further, an inner cavity of a shaft coupling and a transmission shaft hole are arranged in the rotating seat, the output end of the fiber supply motor is connected with the other end of the transmission shaft through the shaft coupling arranged in the inner cavity of the shaft coupling, and the transmission shaft is connected with the transmission shaft hole through a bearing.

[0010] Further, the base is made of marble.

[0011] Further, V-shaped ring grooves are arranged on the fixed wheels and the floating wheel.

[0012] Further, the gap width between the two vertical roller shafts is 0.5-1.5 mm, and the height of the two vertical roller shafts is 30-50 mm.

[0013] Further, the outer diameter of the fiber supply disc is 60-120 mm.

[0014] Further, the inner bottom surface of the concave cavity is provided with an avoiding hole for avoiding the lower part of the fiber supply disc, and the inner side wall of the concave cavity is provided with an avoiding notch for avoiding the side part of the fiber supply disc.

[0015] The utility model has the advantages of small space occupation, constant tension after setting, fast response, small fluctuation, convenient tension size adjustment and the like.

[0016] The utility model has the advantages of small space occupation, constant tension after setting, fast response, small fluctuation, convenient tension size adjustment and the like. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figures 1-3 It is a structural schematic view of the tension control device of the optical fiber winding machine.

[0018] Figure 4 It is a structural schematic view of the tension mechanism.

[0019] Figure 5 It is a perspective view of the cooperation relationship between the fiber supply disc, the rotating seat, the transmission shaft, the shaft coupling, the bearing and the fiber supply motor.

[0020] Figure 6 It is Figure 5 A perspective view when cut open. DETAILED DESCRIPTION

[0021] The utility model will be further described below in combination with the drawings and examples:

[0022] Example one: see Figures 1-6 A tension control device of an optical fiber winding machine, comprising a base 1, a fiber supply disc 2, a tension mechanism 3 and two vertical roller shafts 4 are sequentially arranged on the base 1.

[0023] See Figure 2 Wherein, the two vertical roller shafts 4 are vertically arranged, and the lower ends of the two vertical roller shafts 4 are rotatably connected with the base 1 and arranged close to each other; and the optical fiber passes through the output in the gap between the two vertical roller shafts 4. Since the two vertical roller shafts 4 are vertically arranged and can rotate independently, the optical fiber can be output in rolling contact with any vertical roller shaft 4, and the two vertical roller shafts 4 have sufficient length in the vertical direction, so that the optical fiber can be output forward, leftward, rightward, downward, upward and in other inclined directions, and the output will not be affected when the winding radius increases, especially when the direction of the optical fiber changes periodically due to reciprocation on the winding machine. In addition, the two vertical roller shafts 4 can assist in guiding the optical fiber when it is on the leftmost or rightmost rotating wall during winding, and can be adjusted at any angle and direction to avoid being damaged.

[0024] Preferably, the gap width between the two vertical roller shafts 4 is 0.5-1.5mm; and the height of the two vertical roller shafts 4 is 30-50mm.

[0025] See Figure 4The tension mechanism 3 comprises a fixed frame 3-1, two fixed wheels 3-2, a floating wheel 3-3, a floating seat 3-4, and a cylinder 3-6. The two fixed wheels 3-2 are rotatably and equidistantly arranged on the fixed frame 3-1. The vertical guide rail 3-5 is vertically arranged on the fixed frame 3-1 and between the two fixed wheels 3-2. The floating seat 3-4 is slidably arranged. The floating wheel 3-3 is rotatably arranged on the floating seat 3-4. The cylinder 3-6 is connected with the air pressure system, and the pressure value of the cylinder 3-6 during operation can be controlled and adjusted through the air pressure system.

[0026] Preferably, the fixed frame 3-1 is an I-shaped structure.

[0027] Referring to Figure 4 Further, the fixed wheel 3-2 and the floating wheel 3-3 are both provided with a V-shaped ring groove 23. The V-shaped ring groove 23 can ensure that the optical fiber does not deviate when moving in the V-shaped ring groove 23, and the movement is more stable, so that the tension wave of the optical fiber is smaller.

[0028] Further, the base 1 is made of marble, which is very stable and can reduce vibration interference.

[0029] Specifically, in the embodiment, the output end of the cylinder 3-6 is fixedly connected with the upper end of the floating seat 3-4.

[0030] Referring to Figure 4 The working principle of the embodiment is as follows:

[0031] For example, in the balanced state, the force of the optical fiber on the floating wheel 3-3 is upward and is the tension F1. The force of the output end of the cylinder 3-6 on the floating wheel 3-3 is downward and is the pressure F2 controlled by the air pressure system.

[0032] When the tension of the optical fiber is greater than F1, the optical fiber will force the floating wheel 3-3 to move upward, and the output end of the cylinder 3-6 will move upward (retract) until the tension becomes smaller and is equal to F1, at which time the floating wheel 3-3 stops moving, and at this time, the tension of the optical fiber returns to F1.

[0033] When the tension of the optical fiber is less than F1, the output end of the cylinder 3-6 will drive the floating wheel 3-3 to move downward, and the output end of the cylinder 3-6 will move downward (extend) until the tension becomes larger and is equal to F1, at which time the floating wheel 3-3 stops moving, and at this time, the tension of the optical fiber returns to F1.

[0034] Referring to Figures 2-4, and when working, the fiber from the fiber supply disc 2 passes through the first fixed wheel 3-2, the floating wheel 3-3 and the second fixed wheel 3-2 in sequence, and then passes through the gap between the two vertical roller shafts 4 to be wound. The working pressure of the tension mechanism 3 can be kept at a set value and kept constant under the control of the air pressure system; therefore, when the tension of the moving optical fiber changes, the force acting on the floating wheel 3-3 changes (becomes smaller or larger), which in turn causes the floating seat 3-4 to slide up and down along the vertical guide rail 3-5 to achieve the same tension of the optical fiber as the force of the air cylinder 3-6 acting on the floating wheel 3-3, and the tension is dynamically constant.

[0035] In addition, when the tension parameters of different optical fibers need to be set when winding the optical fiber, only the pressure of the air circuit needs to be adjusted by the air pressure system, and then the working pressure value F2 of the air cylinder 3-6 of different sizes is set, and then the synchronous adjustment of the optical fiber tension size is realized.

[0036] Specifically, the air circuit of the air pressure system is provided with a pressure sensor and a pressure regulating valve for adjusting the working pressure of the air cylinder 3-6; and the pressure sensor and the pressure regulating valve are connected with the PLC controller. Since the working principle of the air pressure system belongs to the prior art, it is not described in detail.

[0037] Compared with the existing mode, the air pressure system is used to adjust the tension size of the optical fiber when working, which has the advantages of simpler operation, wider adjustment range and faster efficiency.

[0038] Therefore, compared with the prior art, the fiber supply disc 2, the tension mechanism 3 and the two vertical roller shafts 4 are arranged on the base 1 in sequence, which can achieve compact distribution and make the whole smaller; at the same time, the two vertical roller shafts 4 can make the output direction of the optical fiber not be affected; and since the working pressure of the air cylinder can be constant, the tension of the optical fiber also remains dynamically unchanged, and the optical fiber tension can be automatically corrected when the optical fiber tension changes, the response is fast, the fluctuation is small, and the working tension of the optical fiber can be adjusted and set by the air pressure system, which is very convenient.

[0039] Therefore, the embodiment has the advantages of small occupied space, not affected by the output direction, constant tension after setting, fast adjustment response, small fluctuation, and convenient tension size adjustment.

[0040] Embodiment two: the embodiment is further improved based on embodiment one:

[0041] Referring to Figures 1-3Further, the base 1 comprises a main block 1-1 and a side block 1-2, the upper side of the main block 1-1 is provided with a recess 1-11; the lower end of the fixed frame 3-1 is fixedly connected with the inner bottom surface of the recess 1-11; a rotating seat 5 is fixedly arranged in the recess 1-11; the fiber supply disc 2 is rotatably connected with the rotating seat 5; the side block 1-2 is fixed on the outer side wall of the main block 1-1 and is away from the fiber supply disc 2; the lower ends of the two vertical roller shafts 4 are rotatably connected with the side block 1-2. The tension mechanism 3 is installed in the recess 1-11 of the base 1, and the height distribution of the fiber supply disc 2, the tension mechanism 3 and the two vertical roller shafts 4 on the base 1 is more reasonable, which can ensure the reasonable movement and tension control of the optical fiber, and the overall shape is further optimized and reduced, which can reduce the occupied space.

[0042] Referring to Figures 1-3 Further, a transmission shaft 6 is rotatably installed on the rotating seat 5, one end of the transmission shaft 6 is connected with the fiber supply disc 2, and the other end of the transmission shaft 6 is connected with the output end of the fiber supply motor 7. The fiber supply motor 7 drives the fiber supply disc 2 to rotate through the transmission shaft 6, thereby achieving the purpose of automatically supplying the optical fiber on the fiber supply disc 2.

[0043] Further, the outer diameter of the fiber supply disc 2 is 60-120mm.

[0044] Referring to Figures 1-3 Further, the inner bottom surface of the recess 1-11 is provided with an avoiding hole 1-12 for avoiding the lower part of the fiber supply disc 2, and the inner side wall of the recess 1-11 is provided with an avoiding gap 1-13 for avoiding the side part of the fiber supply disc 2. Since the fiber supply disc 2 can avoid when a larger-diameter optical fiber disc is installed, the performance is increased, but the overall size is not affected, which greatly saves space.

[0045] Specifically, the size of the product of the embodiment is: length * width * height = 212 mm * 124 mm * 86 mm.

[0046] Embodiment three: the embodiment is further improved on the basis of embodiment one:

[0047] Referring to Figures 5-6 Further, the rotating seat 5 is provided with a transmission shaft hole 5-1 and a coupling built-in cavity 5-2; the output end of the fiber supply motor 7 is connected with the other end of the transmission shaft 6 through a coupling 8 located in the coupling built-in cavity 5-2; the transmission shaft 6 and the transmission shaft hole 5-1 are connected through a bearing 9. Through the transmission shaft hole 5-1 and the coupling built-in cavity 5-2, the torque and motion can be transmitted, the vibration and impact can be absorbed, the overload protection can be realized, the maintenance and repair can be simplified, the dynamic performance can be improved, and the overall rigidity of the rotating seat 5 is further improved.

[0048] The preferred embodiments of the present application are described in detail above. It should be understood that those skilled in the art can make many modifications and changes without creative work according to the concept of the present application. Therefore, any technical solutions obtained by logical analysis, reasoning or limited experiments on the basis of the existing technology according to the concept of the present application shall be within the protection scope defined by the claims.

Claims

1. A tension control device for an optical fiber winding machine, characterized in that: It includes a base (1), on which a fiber supply disc (2), a tension mechanism (3) and two vertical roller shafts (4) are sequentially arranged; the lower ends of the two vertical roller shafts (4) are rotatably connected with the base (1) and are arranged close to each other; The tension mechanism (3) comprises a fixed frame (3-1), two fixed wheels (3-2), a floating wheel (3-3), a floating seat (3-4), a vertical guide rail (3-5) and a gas cylinder (3-6), the two fixed wheels (3-2) are arranged at intervals on the fixed frame (3-1), the vertical guide rail (3-5) is fixed on the fixed frame (3-1) and located between the two fixed wheels (3-2), the floating seat (3-4) is slidably connected with the vertical guide rail (3-5), the gas cylinder (3-6) is vertically installed on the fixed frame (3-1), the output end of the gas cylinder (3-6) is connected with the floating seat (3-4), and the floating wheel (3-3) is installed on the floating seat (3-4); the gas cylinder (3-6) is connected with a gas pressure system.

2. A tension control device for a fiber optic looping machine as defined in claim 1, wherein: The base (1) comprises a main block (1-1) and a side block (1-2), the upper side of the main block (1-1) is provided with a concave cavity (1-11); the lower end of the fixed frame (3-1) is fixedly connected with the inner bottom surface of the concave cavity (1-11); a rotating seat (5) is fixedly arranged in the concave cavity (1-11), and the fiber supply disc (2) is rotatably connected with the rotating seat (5); the side block (1-2) is fixed on the outer side wall of the main block (1-1) and away from the fiber supply disc (2); the lower ends of the two vertical roller shafts (4) are rotatably connected with the side block (1-2).

3. A tension control device for a fiber optic looping machine as defined in claim 2, wherein: A transmission shaft (6) is rotatably installed on the rotating seat (5), one end of the transmission shaft (6) is connected with the fiber supply disc (2), and the other end of the transmission shaft (6) is connected with the output end of a fiber supply motor (7).

4. A tension control device for a fiber optic looping machine as defined in claim 3, wherein: The rotating seat (5) is provided with a transmission shaft hole (5-1) and a coupler built-in cavity (5-2); The output end of the fiber supply motor (7) is connected with the other end of the transmission shaft (6) through a coupler (8) located in the coupler built-in cavity (5-2); the transmission shaft (6) and the transmission shaft hole (5-1) are connected through a bearing (9).

5. A tension control device for a fiber optic looping machine as defined in claim 1, wherein: The base (1) is made of marble.

6. A tension control device for a fiber looping machine as defined in claim 1, wherein: V-shaped ring grooves (23) are arranged on the fixed wheels (3-2) and the floating wheel (3-3).

7. A tension control device for a fiber optic looping machine as defined in claim 1, wherein: The gap width between the two vertical roller shafts (4) is 0.5-1.5 mm, and the height of the two vertical roller shafts (4) is 30-50 mm.

8. A tension control device for a fiber optic looping machine as defined in claim 1, wherein: The outer diameter of the fiber supply disc (2) is 60-120 mm.

9. A tension control device for a fiber looping machine as defined in claim 2, wherein: The inner bottom surface of the concave cavity (1-11) is provided with an avoidance hole (1-12) for avoiding the lower part of the fiber supply disc (2); and the inner side wall of the concave cavity (1-11) is provided with an avoidance notch (1-13) for avoiding the side part of the fiber supply disc (2).

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