Carbon fiber yarn spreading anti-twisting device

Abstract

The utility model provides a carbon fiber yarn spreading anti-twisting device which comprises a supporting mechanism, the supporting mechanism comprises a mounting frame, a rotating shaft is fixed on the mounting frame, an anti-twisting mechanism is arranged on the rotating shaft, the anti-twisting mechanism comprises a mounting frame, a plurality of anti-twisting rods are fixed on the mounting frame, and the anti-twisting rods are fixed on the mounting frame. The anti-twisting rods are at least divided into a front row and a rear row, the front anti-twisting rods and the rear anti-twisting rods are distributed in a staggered mode, each carbon fiber yarn is sequentially attached to the front row and the rear row of the anti-twisting rods to penetrate through the installation frame, the anti-twisting mechanism is arranged between the yarn shaft and the traction machine, the single yarn is attached to the anti-twisting rods to move forwards, and under blocking of the anti-twisting rods, the adjacent yarn cannot make contact with each other; therefore, no static electricity is generated, each yarn independently moves forwards and does not interfere with other yarns, under the constraint of the anti-twisting rod, the yarn is attached to the cylindrical surface of the anti-twisting rod to move, the yarn is not twisted and rolled, and it is guaranteed that follow-up braided fabric is flat.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon fiber yarn spreading auxiliary devices, in particular to a carbon fiber yarn spreading anti-twisting device. Background Art

[0002] Carbon fiber is mainly composed of carbon elements, and has the characteristics of high temperature resistance, friction resistance, thermal conductivity and corrosion resistance. It is fibrous, soft, and can be processed into various fabrics. Because its graphite microcrystalline structure is preferentially oriented along the fiber axis, it has high strength and modulus along the fiber axis. Carbon fiber has a low density, so its specific strength and specific modulus are high. The main use of carbon fiber is as a reinforcing material combined with resin, metal, ceramic and carbon to manufacture advanced composite materials. Carbon fiber reinforced epoxy resin composite materials have the highest specific strength and specific modulus among existing engineering materials.

[0003] At present, when weaving carbon fiber, several yarn shafts are usually placed on a rack, and then a yarn pulling machine pulls the yarn forward and pulls the yarn to the braiding machine for weaving. Since multiple bundles of yarn are needed for weaving, and in order to facilitate entering the braiding machine, the space occupied by the yarn as a whole cannot be too large, so it will cause adjacent yarns to contact each other, and friction will be generated during the forward movement. Since the carbon fiber yarn has a certain width, the static electricity generated by the friction between the yarns will cause the adjacent yarns to be easily attracted together. Since the yarn is long, it will be easy to twist and roll under the action of static electricity. After the yarn is twisted and rolled, it will cause the subsequent weaving to fail to achieve flat weaving. In view of this, overcoming the defects of the above-mentioned prior art is a problem that needs to be solved in this technical field. Utility Model Content

[0004] The utility model provides a carbon fiber yarn anti-twisting device, which aims to improve the static electricity generated by the friction between yarns, which will cause adjacent yarns to be easily attracted together. Due to the long length of the yarn, the yarn is easily twisted and rolled under the action of static electricity. After the yarn is twisted and rolled, the subsequent weaving cannot achieve the problem of planar weaving.

[0005] In order to achieve the above-mentioned purpose, the specific technical scheme of a carbon fiber yarn anti-twisting device of the utility model is as follows:

[0006] The utility model provides a carbon fiber yarn anti-twisting device, comprising a supporting mechanism, the supporting mechanism comprising a mounting frame, a rotating shaft being fixed on the mounting frame, an anti-twisting mechanism being arranged on the rotating shaft, the anti-twisting mechanism comprising a mounting frame, a plurality of anti-twisting rods being fixed on the mounting frame, the plurality of anti-twisting rods being arranged in at least two rows, front and rear, the front and rear anti-twisting rods being staggered, and each carbon fiber yarn being sequentially attached to the front and rear rows of anti-twisting rods to pass through the mounting frame.

[0007] In one embodiment of the utility model, an adjustment mechanism is arranged between the anti-twisting mechanism and the supporting mechanism, and the adjustment mechanism can adjust the angle between the anti-twisting mechanism and the supporting mechanism. The adjustment mechanism includes a connecting frame, and adjusting screws are screwed on both sides of the connecting frame, and brackets are fixed to the ends of the two adjusting screws. A connecting shaft is fixed on the bracket, and a connecting head is rotatably connected to the connecting shaft, one of the connecting heads is fixed to the outside of the mounting frame, and the other connecting head is fixed to the mounting frame.

[0008] In an embodiment of the utility model, the connecting frame and the adjusting screw rod of the adjusting mechanism can be replaced by a hydraulic support rod, and the two ends of the hydraulic support rod are respectively connected to the two brackets.

[0009] In an embodiment of the utility model, connecting sleeves are fixed to both upper and lower ends of the installation frame, and the rotating shaft passes through the interior of the connecting sleeve and is rotatably connected thereto.

[0010] In an embodiment of the present utility model, the anti-twist mechanism is provided in multiple groups from top to bottom.

[0011] In an embodiment of the present utility model, the anti-twist rod is a cylindrical rod body.

[0012] The beneficial effects of the utility model are:

[0013] 1. By setting an anti-twisting mechanism between the yarn shaft and the traction machine, a single yarn fits the anti-twisting rod and runs forward. Under the blocking of the anti-twisting rod, adjacent yarns will not contact each other, and thus no friction will occur, thereby generating no static electricity, so that each yarn can run forward independently without interfering with other yarns. Moreover, under the restraint of the anti-twisting rod, the yarn fits the cylindrical surface of the anti-twisting rod and runs, and the yarn will not be twisted and rolled, ensuring the smoothness of the subsequent braided fabric.

[0014] 2. By setting an adjustment mechanism, the angle between the anti-twist mechanism and the support mechanism can be adjusted. The larger the angle between the anti-twist mechanism and the support mechanism, the smaller the width of the anti-twist mechanism in the forward direction, thereby being able to control the width of the overall yarn on the anti-twist mechanism, so as to better cooperate with the subsequent traction mechanism and facilitate the subsequent carbon fiber weaving. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1This is a schematic diagram of the overall device provided by the embodiment of the utility model Figure 1 ;

[0017] Figure 2 The overall device provided by the embodiment of the utility model is schematically shown Figure 2 ;

[0018] Figure 3 A schematic diagram of the installation position of the adjustment mechanism provided in the embodiment of the utility model;

[0019] Figure 4 A schematic diagram of the structure of the adjustment mechanism provided in the embodiment of the utility model;

[0020] Figure 5 Schematic diagram of the anti-twisting mechanism structure provided in the embodiment of the utility model Figure 1 ;

[0021] Figure 6 Schematic diagram of the anti-twisting mechanism structure provided in the embodiment of the utility model Figure 2 ;

[0022] Figure 7 Schematic diagram of the yarn passing through the anti-twisting mechanism provided in the embodiment of the utility model Figure 1 ;

[0023] Figure 8 Schematic diagram of the yarn passing through the anti-twisting mechanism provided in the embodiment of the utility model Figure 2 .

[0024] In the figure: 100, supporting mechanism; 110, mounting frame; 120, rotating shaft; 200, anti-twisting mechanism; 210, mounting frame; 211, connecting sleeve; 220, anti-twisting rod; 300, adjusting mechanism; 310, connecting frame; 320, adjusting screw rod; 330, bracket; 340, connecting shaft; 350, connecting head; 360, hydraulic support rod. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] Example

[0029] See also Figure 1 and Figure 2 The utility model provides a carbon fiber yarn anti-twisting device, including a supporting mechanism 100, the supporting mechanism 100 includes a mounting frame 110, the mounting frame 110 is welded by metal square steel, a rotating shaft 120 is fixed in the middle position of the mounting frame 110, and the rotating shaft 120 crosses the entire mounting frame 110 from top to bottom.

[0030] See also Figure 2 , Figure 5 and Figure 6The rotating shaft 120 is provided with an anti-twisting mechanism 200, and the anti-twisting mechanism 200 is provided with multiple groups. The multiple groups of anti-twisting mechanisms 200 are arranged from top to bottom, and the yarn groups with different heights on the yarn rack can be bound and twisted. The anti-twisting mechanism 200 includes a mounting frame 210, and the mounting frame 210 is welded by four metal plates. The mounting frame 210 is rectangular in design. The upper and lower ends of the mounting frame 210 are fixed with connecting sleeves 211. The rotating shaft 120 passes through the interior of the connecting sleeve 211 and is rotatably connected thereto. A plurality of anti-twisting rods 220 are fixed inside the mounting frame 210. The anti-twisting rods 220 are metal cylindrical rod bodies, and the outer circumference of the anti-twisting rods 220 is The cylindrical surface is processed (such as electroplating, polishing), and the friction coefficient is lower than 0.08μ. When the carbon fiber yarn runs forward around the anti-twist rod 220, the smaller the friction coefficient of the outer cylinder of the anti-twist rod 220, the smaller the friction between the carbon fiber yarn and the anti-twist rod 220, the smaller the resistance of the carbon fiber yarn to run forward, the smoother the operation, and the damage to the carbon fiber yarn is reduced. The anti-twist rods 220 are preferably divided into two rows, front and back, and the front and rear anti-twist rods 220 are staggered. The number of anti-twist rods 220 in the rear row is twice that of the front row, and the front row of anti-twist rods 220 are located in the middle of the two anti-twist rods 220 in the rear row (such as Figure 7 As shown), since the carbon fiber yarn has a certain width, each carbon fiber yarn sequentially fits the front and rear anti-twist rods 220 and passes through the installation frame 210. The yarn passes through the anti-twist rods 220 and is bound by the anti-twist rods 220 in an S shape. The yarn forward direction is not a straight line, and the force direction of the yarn is different from the running direction, thereby straightening the yarn, making the yarn relatively tight and not loose, and avoiding adjacent yarns from conflicting and entangled with each other.

[0031] See also Figure 1 , Figure 3 and Figure 4, Specifically, an adjustment mechanism 300 is provided between the anti-twist mechanism 200 and the support mechanism 100. The adjustment mechanism 300 can adjust the angle between the anti-twist mechanism 200 and the support mechanism 100. The adjustment mechanism 300 includes a connecting frame 310. The connecting frame 310 is rectangularly arranged. Adjusting screw rods 320 are symmetrically screwed on both sides of the connecting frame 310, and the thread directions of the two adjusting screw rods 320 are opposite. When the staff rotates the connecting frame 310 by hand, the adjusting screw rods 320 can simultaneously extend outwards or retract inwards relative to the connecting frame 310, thereby adjusting the length of the entire adjustment mechanism. The ends of both adjusting screw rods 320 are fixed with brackets 330 by welding. The brackets 330 are designed in a U shape. A connecting shaft 340 is fixed inside the brackets 330. A connecting head 350 is rotatably installed on the connecting shaft 340. One of the connecting heads 350 is fixed on the outside of the installation frame 210, and the other connecting head 350 is fixed on the installation rack 110. Since the installation rack 110 is fixed, when the adjusting screw rod 320 is rotated, the length of the entire adjustment mechanism 300 changes. Then, the adjustment mechanism 300 pushes the installation frame 210 to rotate around the rotating shaft 120, so that the included angle between the installation frame 210 and the installation rack 110 changes. Thus, the width of the anti-twist mechanism 200 in the advancing direction can be adjusted, and then the width of the overall yarn on the anti-twist mechanism 200 can be controlled, so as to better cooperate with the subsequent traction mechanism and facilitate the subsequent carbon fiber weaving;

[0032] Please refer to Figure 2 and Figure 3 , Preferably, the connecting frame 310 and the adjusting screw rod 320 parts are installed on one side of the anti-twist mechanism 200 to realize the length adjustment of the entire adjustment mechanism 300. The connecting frame 310 and the adjusting screw rod 320 on the other side of the anti-twist mechanism 200 can be replaced with a hydraulic support rod. The two ends of the hydraulic support rod are connected to the bracket 330. Because the support rod is an elastic element with gas and liquid as the working medium, it consists of a pressure pipe, a piston, a piston rod and several connecting parts. Its internal is filled with high-pressure nitrogen. Since there are through holes inside the piston, the gas pressures at both ends of the piston are equal, but the cross-sectional areas on both sides of the piston are different. One end is connected with a piston rod while the other end is not. Under the action of the gas pressure, a pressure towards the side with a smaller cross-sectional area is generated, that is, the elastic force of the support rod. The magnitude of the elastic force can be set by setting different nitrogen pressures or piston rods with different diameters. The setting of the hydraulic support rod enables the installation frame 210 to always receive the thrust of the hydraulic support rod. The other side of the installation frame 210 is supported by the adjusting screw rod 320 and the connecting frame 310, offsetting the thrust of the hydraulic support rod. Thus, the entire installation frame 210 is always evenly stressed, avoiding the installation frame 210 from shaking due to external forces, resulting in unstable yarn running on it, and playing a role in stabilizing the anti-twist mechanism 200.

[0033] Working principle: The yarn on the spool is passed through the gap between the anti-twist rods 220 on the front side of the installation frame 210, and then passes through the gap between the anti-twist rods 220 on the corresponding rear side. The yarn runs in an S-shaped trajectory in the installation frame 210, and the yarn is in close contact with the outer cylindrical surfaces of the front and rear anti-twist rods 220 to prevent the yarn from turning over and twisting.

[0034] When the mounting frame 210 is parallel to the mounting frame 110, the angle is 0° (e.g. Figure 7 As shown in the figure, at this time, the entire yarn width L is relatively wide. When the width of the entire yarn needs to be adjusted, the connecting frame 310 is rotated by hand. The connecting frame 310 is rotated clockwise, and the two adjusting screw rods 320 are retracted inward, so that the length of the entire adjusting mechanism 300 becomes shorter, and then the adjusting mechanism 300 pulls the mounting frame 210 inward, and the mounting frame 210 rotates around the rotating shaft 120, so that the angle between the mounting frame 210 and the mounting frame 110 becomes larger (as shown in the figure). Figure 8 As shown), the entire yarn width L becomes smaller, making it convenient to adjust the entire yarn width in a timely manner.

[0035] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A carbon fiber yarn anti-twisting device, comprising a support mechanism (100), wherein the support mechanism (100) comprises a mounting frame (110), a rotating shaft (120) is fixed on the mounting frame (110), and the device is characterized in that: The rotating shaft (120) is provided with an anti-twist mechanism (200), the anti-twist mechanism (200) comprising a mounting frame (210), a plurality of anti-twist rods (220) being fixed on the mounting frame (210), the plurality of anti-twist rods (220) being arranged in at least two rows, front and rear, the front and rear anti-twist rods (220) being staggered, and each carbon fiber yarn being sequentially attached to the front and rear rows of anti-twist rods and passing through the mounting frame (210).

2. A carbon fiber yarn twist prevention device according to claim 1, characterized in that: An adjustment mechanism (300) is provided between the anti-twist mechanism (200) and the support mechanism (100), and the adjustment mechanism (300) is capable of adjusting the angle between the anti-twist mechanism (200) and the support mechanism (100). The adjustment mechanism (300) comprises a connecting frame (310), and both sides of the connecting frame (310) are screwed with adjustment screws (320), and the ends of the two adjustment screws (320) are fixed with brackets (330), and the brackets (330) are fixed with connecting shafts (340), and the connecting shafts (340) are rotatably connected with connecting heads (350), wherein one connecting head (350) is fixed to the outside of the installation frame (210), and the other connecting head (350) is fixed to the installation frame (110).

3. A carbon fiber yarn twist prevention device according to claim 2, characterized in that: The connecting frame (310) and the adjusting screw rod (320) of the adjusting mechanism (300) can be replaced by a hydraulic support rod (360), and the two ends of the hydraulic support rod (360) are respectively connected to the two brackets (330).

4. A carbon fiber yarn twist prevention device according to claim 1, characterized in that: A connecting sleeve (211) is fixed to both the upper and lower ends of the installation frame (210), and the rotating shaft (120) passes through the interior of the connecting sleeve (211) and is rotatably connected thereto.

5. The carbon fiber yarn twist-proof device according to claim 1, characterized in that: The anti-twisting mechanism (200) is provided in multiple groups from top to bottom.

6. A carbon fiber yarn twist prevention device according to claim 1, characterized in that: The anti-twisting rod (220) is a cylindrical rod body.

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