Wire collection device for carbon fiber winding and forming and carbon fiber winding and forming method

Abstract

The present invention provides a wire collecting device and a carbon fiber winding forming method for carbon fiber winding forming, which solves the technical problem that the carbon fiber winding effect in the prior art is not very good. The wire collecting device and the carbon fiber winding forming method provided by the present invention detect the real-time detection tension of the filament bundle in the winding process through a tension sensor; since the winding diameter of the filament bundle becomes larger and larger during the winding of the filament bundle into a filament roll, the tension of the filament roll decreases linearly with the increase of the winding diameter of the filament roll, which can make the filament roll forming excellent. That is, the tension of the filament bundle can be regulated and controlled, and the tension can be reduced, so that the tension of the filament bundle decreases linearly, so that the filament roll forming can be excellent. That is, when controlling the winding parameters, the winding parameters are regulated in principle, and the winding parameters can be regulated in real time. In addition, different winding parameters can be matched according to different carbon fiber bundles, thereby improving the winding forming property of the carbon fiber bundle.

Description

Technical Field

[0001] The invention relates to the technical field of carbon fiber, and in particular to a wire collecting device for carbon fiber winding and molding and a carbon fiber winding and molding method. Background Art

[0002] After pre-oxidation, carbonization and post-processing, polyacrylonitrile-based carbon fiber precursor is made into polyacrylonitrile-based carbon fiber (hereinafter referred to as carbon fiber). A wire-receiving machine is often used to tightly wind the carbon fiber on a paper drum to form a cylindrical wire roll for subsequent production of carbon fiber products. The requirements for subsequent use, transportation, storage, etc. are: good winding, smooth surface (drum surface) and end surface of the wire roll, appropriate tightness, high wire roll capacity (winding density greater than or equal to 1.0g / cm3), no overlapping wires, and smooth unwinding.

[0003] However, in the prior art, this can be achieved by controlling the winding parameters, but the carbon fiber winding effect is not very good. Summary of the invention

[0004] In view of this, the present invention provides a wire collecting device for carbon fiber winding and forming and a carbon fiber winding and forming method, which solves the technical problem that the carbon fiber winding effect is not very good in the prior art.

[0005] According to one aspect of the present invention, there is provided a wire collecting device for carbon fiber winding and forming, comprising: a guide wire wheel group, the guide wire wheel group is used to guide the wire bundle; a wire arranging device, the wire arranging device is provided with a rabbit head, the wire bundle is wound on the wire arranging device after passing through the guide wire wheel group; a slide groove, the length extension direction of the slide groove is in the vertical direction, and the wire arranging device is slidably arranged in the slide groove; a driving mechanism; a spindle shaft and a paper tube sleeved on the spindle shaft, wherein the driving mechanism drives the spindle shaft and the paper tube sleeved on the spindle shaft to continuously rotate around their own axes; and a driving device, the driving device is connected to the rabbit head, and the rabbit head reciprocates along the axis of the spindle shaft under the drive of the driving device; a back pressure roller fixed on the wire arranging device, the back pressure roller is in contact with the outer surface of the wire roll; and a tension sensor arranged on the guide wire wheel group.

[0006] In one embodiment of the present invention, the guide wheel group includes: a first guide wheel; a second guide wheel, the tension sensor is arranged on the second guide wheel; and a third guide wheel; wherein the yarn bundle passes through the first guide wheel, the second guide wheel and the third guide wheel in sequence.

[0007] In one embodiment of the present invention, the guide wheel assembly further includes: a leaf spring, the third guide wheel is arranged on the leaf spring, and the guide wheel swings with the leaf spring.

[0008] In one embodiment of the present invention, the back pressure roller is cylindrical.

[0009] In one embodiment of the present invention, the wire collecting device for carbon fiber winding and molding also includes: a pressure regulating valve is set in the air circuit, and the pressure regulating valve is used to adjust the contact pressure between the back pressure roller and the wire roll so that the contact pressure between the back pressure roller and the wire roll is constant.

[0010] As a second aspect of the present invention, the present invention also provides a carbon fiber winding and forming method, which is suitable for the above-mentioned carbon fiber winding and forming wire collecting device, wherein the carbon fiber winding and forming method comprises: winding the filament bundle around the guide wire wheel group and then winding it on the wire arrangement device; the driving mechanism drives the spindle shaft and the paper tube mounted on the spindle shaft to continuously rotate around their own axes, and the driving device drives the rabbit head to reciprocate along the axis of the spindle shaft, and the filament bundle is wound on the paper tube to form a filament roll; the tension sensor detects the real-time detection tension of the filament bundle during the winding and forming process in real time; and the tension of the filament bundle during the winding and forming process is linearly reduced in real time according to the real-time detection tension and the winding diameter of the filament roll.

[0011] In one embodiment of the present invention, the wire collecting device for carbon fiber winding and molding further includes: a pressure regulating valve is set in the air circuit; wherein, the carbon fiber winding and molding method further includes: measuring the winding diameter of the wire roll, and adjusting the pressure regulating valve in real time according to the change of the winding diameter, so that the contact pressure between the back pressure roller and the wire roll is constant.

[0012] In one embodiment of the present invention, the contact pressure between the back pressure roller and the wire roll is 1000-1200 CN.

[0013] In one embodiment of the present invention, the carbon fiber winding forming method also includes: adjusting the winding ratio in sections according to the winding diameter of the filament roll; wherein the winding ratio is the ratio of the reciprocating stroke of the rabbit head along the axial direction of the spindle shaft to the number of rotations of the spindle shaft.

[0014] In one embodiment of the present invention, the initial tension of the filament bundle is 1400CN, and the final tension of the filament bundle is 800CN.

[0015] The invention provides a wire collecting device for winding and forming carbon fiber and a method for winding carbon fiber into a wire roll using the wire collecting device for winding and forming carbon fiber. The real-time detection tension of the wire bundle during the winding process is detected in real time by a tension sensor. Since the winding diameter of the wire bundle becomes larger and larger during the winding of the wire bundle, the tension of the wire roll decreases in a linear proportion with the increase of the winding diameter of the wire roll, which can make the wire roll excellent. In the process of winding the wire bundle into a wire roll and the winding diameter of the wire roll gradually increases, when the real-time detection tension of the wire bundle during the winding process detected by the tension sensor in real time does not decrease, or does not decrease in a linear proportion, the tension of the wire bundle can be adjusted to reduce the tension, so that the tension of the wire bundle decreases in a linear proportion, so that the wire roll can be excellently formed. That is, when controlling the winding parameters, the winding parameters are adjusted in principle, and the winding parameters can be adjusted in real time. In addition, different winding parameters can be matched according to different carbon fiber bundles, thereby improving the winding formability of the carbon fiber bundle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other purposes, features and advantages of the present invention will become more apparent by describing the embodiments of the present invention in more detail in conjunction with the accompanying drawings. The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are constructed to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0017] Figure 1 The figure is a schematic structural diagram of a wire collection device for carbon fiber winding and molding provided by one embodiment of the present invention.

[0018] Reference numerals:

[0019] 1-tow; 20-wire guide wheel group; 2-first wire guide wheel; 3-leaf spring; 4-third wire guide wheel; 5-second wire guide wheel; 6-wire arrangement device; 7-chute; 8-back pressure roller; 9-spindle shaft; 10-paper tube; 11-wire roll; 61-rabbit head DETAILED DESCRIPTION

[0020] In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically limited. In the embodiment of the present invention, all directional indications (such as up, down, left, right, front, back, top, bottom...) are only constructed to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0021] In addition, reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Figure 1 FIG. 1 is a schematic diagram of a structure of a wire collecting device for carbon fiber winding and molding provided by the invention, as shown in FIG. Figure 1 As shown, the wire collecting device for carbon fiber winding and forming comprises: a wire guide wheel group 20, the wire guide wheel group 20 is used to guide the wire bundle 1; a wire arrangement device 6, the wire bundle 1 is wound on the wire arrangement device 6 after passing through the wire guide wheel group 20; a slide groove 7, the length extension direction of the slide groove 7 is the vertical direction, and the wire arrangement device 6 is slidably arranged in the slide groove 7, and the wire arrangement device 6 can be driven by a cylinder ( Figure 1 The driving mechanism (not shown) is driven by the cylinder and can move up and down in the vertical direction in the slideway 7; Figure 1 (not shown) drives the spindle shaft 9 and the paper tube 10 mounted on the spindle shaft 9 to continuously rotate around its own axis; a rabbit head 61 is provided on the wire arrangement device 6, which is in the driving device ( Figure 1The yarn bundle 1 is wound on the paper tube 10 to form a yarn roll 11; the back pressure roller 8 fixed on the wire arrangement device 6 is in contact with the outer surface of the yarn roll 11; and the tension sensor ( Figure 1 not shown).

[0024] Among them, the wire arranging device 6 can move in the vertical direction along the slide groove 7. When the winding diameter of the wire roll 11 gradually increases, the wire arranging device 6 can move in the vertical direction along the slide groove 7, thereby driving the back pressure roller 8 to move away from the center of the wire roll 11 as the winding diameter of the wire roll 11 increases, so that the contact pressure between the back pressure roller and the wire roll is constant.

[0025] Use Figure 1 The method of winding carbon fiber into a wire roll 11 by a wire collecting device for winding and molding carbon fiber shown in the figure comprises the following steps:

[0026] Step S101: winding the yarn bundle 1 around the wire guide wheel assembly 20 and then around the wire arrangement device 6;

[0027] Step S102: the driving device drives the rabbit head 61 on the arranging device 6 to reciprocate along the axis of the spindle shaft 9, and the driving mechanism drives the spindle shaft 9 and the paper tube 10 to continuously rotate around their own axes, and the silk bundle 1 is wound around the paper tube 10 in a spiral line to form a silk roll 11;

[0028] Step S103: the tension sensor detects the tension of the tow 1 in real time during the winding process;

[0029] Step S104: linearly reducing the tension of the filament bundle 1 during the winding process in real time according to the real-time detected tension and the winding diameter of the filament roll 11 .

[0030] In step S104, the real-time detected tension of the filament bundle 1 during the winding process is detected in real time by the tension sensor; since the winding diameter of the filament bundle 11 becomes larger and larger during the winding process of the filament bundle 1 into the filament roll 11, the tension of the filament roll 11 decreases in a linear proportion as the winding diameter of the filament roll 11 increases, so that the filament roll 11 can be formed excellently. In the process of the filament bundle 1 being wound into the filament roll 11 and the winding diameter of the filament roll 11 gradually increasing, when the real-time detected tension of the filament bundle 1 during the winding process detected in real time by the tension sensor does not decrease, or does not decrease in a linear proportion, the tension of the filament bundle 1 can be adjusted to reduce the tension, so that the tension of the filament bundle 1 decreases in a linear proportion, so that the filament roll 11 can be formed excellently.

[0031] Optionally, the initial tension of the filament bundle 1 is 1400CN, and the final tension of the filament bundle 1 is 800CN.

[0032] The carbon fiber winding and forming collecting device provided by the present invention and the method for winding carbon fiber into a wire roll 11 using the carbon fiber winding and forming collecting device can control the winding parameters in principle and in real time. In addition, different winding parameters can be matched according to different carbon fiber bundles 1, thereby improving the winding formability of the carbon fiber bundle 1.

[0033] In one embodiment of the present invention, the Figure 1 The method of winding carbon fiber into a wire roll 11 by a wire collecting device for winding and molding carbon fiber shown in the figure comprises the following steps:

[0034] Step S101: winding the yarn bundle 1 around the wire guide wheel assembly 20 and then around the wire arrangement device 6;

[0035] Step S102: The driving device drives the rabbit head 6-1 on the wire arrangement device 6 to reciprocate along the axis of the spindle shaft 9. The driving mechanism drives the spindle shaft 9 and the paper tube 10 to rotate continuously around their own axes. The yarn bundle 1 is wound on the paper tube 10 in a spiral line to form a yarn roll 11.

[0036] Step S103: the tension sensor detects the tension of the tow 1 in real time during the winding process;

[0037] Step S104: linearly reducing the tension of the filament bundle 1 during the winding process in real time according to the real-time detected tension and the winding diameter of the filament roll 11;

[0038] The tension of the tow 1 in the winding process is detected in real time by the tension sensor; since the diameter of the tow 11 becomes larger and larger during the winding process of the tow 1 into the tow 1, the tension of the tow 11 decreases in a linear proportion as the diameter of the tow 11 increases, so that the tow 11 can be formed excellently. In the process of the tow 1 being wound into the tow 11 and the diameter of the tow 11 gradually increasing, when the tension of the tow 1 in the winding process detected in real time by the tension sensor does not decrease, or does not decrease in a linear proportion, the tension of the tow 1 can be adjusted to reduce the tension, so that the tension of the tow 1 decreases in a linear proportion, so that the tow 1 can be formed excellently.

[0039] Step S105: adjusting the winding ratio in sections according to the winding diameter of the wire roll 11; wherein the winding ratio is the ratio of the reciprocating stroke of the rabbit head 61 along the axis of the spindle shaft 9 to the number of revolutions of the spindle shaft 9. That is, J=2H / N, wherein J is the winding ratio, 2H is the reciprocating stroke of the rabbit head 61 along the axis of the spindle shaft 9, and N is the number of revolutions of the spindle shaft 9 during the time when the rabbit head 61 makes a reciprocating motion along the axis of the spindle shaft 9.

[0040] Optionally, the winding ratio is adjusted in sections according to the winding diameter of the wire roll 11, and the adjustment can be performed in the following manner:

[0041] (1) When the coil diameter of the wire coil 11 is 85-100 mm, the winding ratio J is 10.619975;

[0042] (2) When the coil diameter of the wire coil 11 is 100-160 mm, the winding ratio J is 9.094709;

[0043] (3) When the coil diameter of the wire coil 11 is 160-220 mm, the winding ratio J is 6.302667;

[0044] (4) When the coil diameter of the wire coil 11 is 220-250 mm, the winding ratio J is 5.923546;

[0045] By adjusting the winding ratio and the tension of the tow 1, the winding parameters can be adjusted in real time in principle. In addition, different winding parameters can be matched according to different carbon fiber tows 1, thereby improving the winding formability of the carbon fiber tow 1, such as the roll surface (cylinder surface) and the end surface are flat and smooth, the wire pitch of adjacent winding cycles is large, the entire wire roll 11 is dense and uniform, and the winding density is 1.1-1.2g / cm 3 .

[0046] In one embodiment of the present invention, Figure 1 As shown, the guide wheel assembly 20 includes: a first guide wheel 2; a second guide wheel 5, on which a tension sensor is arranged; a third guide wheel 4 and a leaf spring 3; wherein the yarn bundle 1 passes through the first guide wheel 2, the second guide wheel 5 and the third guide wheel 4 in sequence; the third guide wheel 4 is arranged on the leaf spring 3, and the guide wheel swings with the leaf spring 3, so as to maintain a relatively constant tension of the yarn bundle 1.

[0047] Optionally, the back pressure roller 8 is cylindrical.

[0048] In one embodiment of the present invention, the wire collecting device for carbon fiber winding and molding also includes: a pressure regulating valve is set in the air circuit, and the pressure regulating valve is used to adjust the contact pressure between the back pressure roller 8 and the wire roll 11 so that the contact pressure between the back pressure roller 8 and the wire roll 11 is constant.

[0049] The method of using the wire collecting device for carbon fiber winding and forming to wind carbon fiber into a wire roll 11 comprises the following steps:

[0050] Step S101: winding the yarn bundle 1 around the wire guide wheel assembly 20 and then around the wire arrangement device 6;

[0051] Step S102: The driving device drives the rabbit head 6-1 on the wire arrangement device 6 to reciprocate along the axis of the spindle shaft 9. The driving mechanism drives the spindle shaft 9 and the paper tube 10 to rotate continuously around their own axes. The yarn bundle 1 is wound on the paper tube 10 in a spiral line to form a yarn roll 11.

[0052] Step S103: the tension sensor detects the tension of the tow 1 in real time during the winding process;

[0053] Step S104: linearly reducing the tension of the filament bundle 1 during the winding process in real time according to the real-time detected tension and the winding diameter of the filament roll 11;

[0054] The tension of the tow 1 in the winding process is detected in real time by the tension sensor; since the diameter of the tow 11 becomes larger and larger during the winding process of the tow 1 into the tow 1, the tension of the tow 11 decreases in a linear proportion as the diameter of the tow 11 increases, so that the tow 11 can be formed excellently. In the process of the tow 1 being wound into the tow 11 and the diameter of the tow 11 gradually increasing, when the tension of the tow 1 in the winding process detected in real time by the tension sensor does not decrease, or does not decrease in a linear proportion, the tension of the tow 1 can be adjusted to reduce the tension, so that the tension of the tow 1 decreases in a linear proportion, so that the tow 1 can be formed excellently.

[0055] Step S105: adjusting the winding ratio in sections according to the winding diameter of the wire roll 11; wherein the winding ratio is the ratio of the reciprocating stroke of the rabbit head 61 along the axis of the spindle shaft 9 to the number of revolutions of the spindle shaft 9. That is, J=2H / N, wherein J is the winding ratio, 2H is the reciprocating stroke of the rabbit head 61 along the axis of the spindle shaft 9, and N is the number of revolutions of the spindle shaft 9 during the time when the rabbit head 61 reciprocates along the axis of the spindle shaft 9.

[0056] Step S106: measuring the winding diameter of the wire roll 11, and adjusting the pressure regulating valve in real time according to the change of the winding diameter, so that the contact pressure between the back pressure roller 8 and the wire roll 11 is constant.

[0057] Optionally, the contact pressure between the back pressure roller 8 and the wire roll 11 is 1000-1200CN, preferably 1000CN.

[0058] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A carbon fiber winding method, suitable for a fiber collection device for carbon fiber winding, wherein: The wire collecting device comprises: a wire guide wheel group (20), the wire guide wheel group (20) is used to guide the wire bundle (1); a wire arrangement device (6), the wire arrangement device (6) is provided with a rabbit head (61), and the wire bundle (1) is wound around the wire arrangement device (6) after passing through the wire guide wheel group (20); a slide groove (7), the length extension direction of the slide groove (7) is in the vertical direction, and the wire arrangement device (6) is slidably arranged in the slide groove (7); a driving mechanism; a spindle shaft (9) and a paper tube (10) sleeved on the spindle shaft (9), wherein the driving mechanism drives the spindle shaft (9) and the paper tube (10) sleeved on the spindle shaft (9) to continuously rotate around their own axes; and a driving device, the driving device is connected to the rabbit head (61), and the rabbit head (61) performs reciprocating motion along the axis of the spindle shaft (9) under the drive of the driving device; a back pressure roller (8) fixed on the wire arrangement device (6), the back pressure roller (8) being in contact with the outer surface of the wire roll (11); and a tension sensor arranged on the guide wheel assembly (20); Characterized in that the carbon fiber winding molding method comprises: Passing the yarn bundle around the guide wheel assembly and then around the wire arrangement device; The driving mechanism drives the spindle shaft and the paper tube mounted on the spindle shaft to rotate continuously around their own axes, and the driving device drives the rabbit head to reciprocate along the axis of the spindle shaft, and the silk bundle is wound on the paper tube to form a silk roll; The tension sensor detects the tension of the tow in real time during the winding process; Reducing the tension of the tow in the winding process linearly in real time according to the real-time detected tension and the winding diameter of the tow; The method of linearly reducing the tension of the filament bundle in the winding process in real time according to the real-time detected tension and the winding diameter of the filament bundle comprises: When the real-time detected tension does not decrease in a linear proportion, reducing the tension of the tow during the winding process so that the tension of the tow decreases in a linear proportion; The carbon fiber winding molding method also includes: The winding ratio is adjusted in sections according to the winding diameter of the wire roll. The winding ratio can be adjusted in sections according to the winding diameter of the wire roll. The adjustment can be performed in the following manner: (1) When the coil diameter of the wire coil (11) is 85-100 mm, the winding ratio J is 10.619975; (2) When the coil diameter of the wire coil (11) is 100-160 mm, the winding ratio J is 9.094709; (3) When the coil diameter of the wire coil (11) is 220-250 mm, the winding ratio J is 5.923546; Among them, the winding ratio is the ratio of the reciprocating stroke of the rabbit head along the axial direction of the spindle shaft to the number of revolutions of the spindle shaft.

2. The carbon fiber winding molding method according to claim 1, characterized in that: The carbon fiber winding and forming collecting device further includes: a pressure regulating valve arranged in the gas path; Wherein, the carbon fiber winding molding method further comprises: The winding diameter of the wire roll is measured, and the pressure regulating valve is adjusted in real time according to the change of the winding diameter, so that the contact pressure between the back pressure roller and the wire roll is constant.

3. The carbon fiber winding molding method according to claim 2, characterized in that: The contact pressure between the back pressure roller and the wire roll is 1000-1200CN.

4. The carbon fiber winding molding method according to claim 1, characterized in that: The initial tension of the filament bundle is 1400CN, and the final tension of the filament bundle is 800CN.

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