METHOD FOR KNOTTING GLASS FIBER BUNDLES AND SPLICED GLASS FIBER BUNDLE

Abstract

The present disclosure provides a method for knotting glass fibers and a spliced glass fiber bundle. The method for knotting glass fibers comprises the following steps of: equally dividing a glass fiber bundle A and a glass fiber bundle B that are to be connected by knotting into n strands, respectively, and marking the strands as A1-An and B1-Bn, respectively, wherein n is a natural number greater than or equal to 2; and, successively knotting and splicing the glass fiber strands A1-An and the glass fiber strands B1-Bn in one-to-one correspondence to form n spliced knots. The method for knotting glass fibers in the present disclosure is simple, easy to operate and applied to the knotting and splicing of various fiber bundles, and can effectively reduce the size of knots formed by knotting fiber bundles. Accordingly, the blockage, entanglement, stoppage and other phenomena during the production can be prevented, the smooth production is ensured, and it is advantageous for continuous production and quality of subsequent products.

Claims

1. A method for knotting glass fiber bundles, comprising the following steps of: equally dividing a glass fiber bundle A and a glass fiber bundle B that are to be connected by knotting into n strands, respectively, and marking the strands as A1-An and B1-Bn, respectively, wherein n is a natural number greater than or equal to 2; and successively knotting and splicing the glass fiber strands A1-An and the glass fiber strands B1-Bn in one-to-one correspondence to form n spliced knots.

2. The method for knotting glass fiber bundles according to claim 1, wherein: the n spliced knots are staggered in pairs in a lengthwise direction of the glass fiber bundles.

3. The method for knotting glass fiber bundles according to claim 1, wherein: a distance L between two adjacent spliced knots among the n spliced knots in the lengthwise direction of the glass fiber bundles is greater than or equal to a length C of the spliced knots.

4. The method for knotting glass fiber bundles according to claim 1, wherein: the n spliced knots are formed in any one or more of the following ways: knotting by twining, knotting by glue and knotting by air mixing.

5. A spliced glass fiber bundle, wherein: the spliced glass fiber bundle comprises a glass fiber bundle A and a glass fiber bundle B that are spliced with each other, and the glass fiber bundle A and the glass fiber bundle B are connected by n spliced knots, where n is a natural number greater than or equal to 2.

6. The spliced glass fiber bundle according to claim 5, wherein: the n spliced knots are the same in size and staggered in pairs in a lengthwise direction of the spliced glass fiber bundle.

7. The spliced glass fiber bundle according to claim 6, wherein: a distance L between two adjacent spliced knots among the n spliced knots in the lengthwise direction of the spliced glass fiber bundle is greater than or equal to a length C of the spliced knots.

8. The spliced glass fiber bundle according to claim 5, wherein: the n spliced knots are formed in any one or more of the following ways: knotting by twining, knotting by glue and knotting by air mixing.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings incorporated in the description and constituting a part of the description show the embodiments of the present disclosure, and are used for explaining the principle of the present disclosure in combination with the description. In these drawings, similar reference numerals represent similar elements. The drawings described hereinafter are some of but not all of the embodiments of the present disclosure. A person of ordinary skill in the art can obtain other drawings according to these drawings without paying any creative effort.

[0023] FIG. 1 is a schematic structure diagram of an embodiment of glass fiber bundles connected by a method for knotting glass fiber bundles according to the present disclosure;

[0024] FIG. 2 is a schematic structure diagram of glass fiber bundles connected by conventional knotting by twining;

[0025] FIG. 3 is a schematic structure diagram of glass fiber bundles connected by conventional knotting by glue;

[0026] FIG. 4 is a schematic structure diagram of an embodiment of a glass fiber bundle according to the present disclosure; and

[0027] FIG. 5 is a schematic structure diagram of another embodiment of the glass fiber bundle according to the present disclosure.

DETAILED DESCRIPTION OF THE PRESENT INVENTION

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be described below clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are just some but not all of the embodiments of the present disclosure. All other embodiments obtained by a person of ordinary skill in the art without paying any creative effort on the basis of the embodiments in the present disclosure shall fall into the protection scope of the present disclosure. It is to be noted that the embodiments in the present application and the features in the embodiments can be combined at will if not conflict.

[0029] In the present disclosure, by equally dividing ends of two glass fiber bundles into a plurality of sub-bundles, then knotting and connecting the sub-bundles, by staggering the spliced knots of the fiber bundles in pairs, in this way the diameter of the spliced knots is reduced, and the fiber bundles will not be stuck, broken or excessively abraded to cause fuzzes when passing through a fiber guide device, for example, a ceramic eyelet, at a high speed. Moreover, during chopping, the quality problem caused when the spliced knots are not chopped due to their too large sizes and too high hardness can be avoided, and the probability of defects due to imperfect impregnation of too large spliced knots in glass fiber reinforced products can also be reduced.

[0030] Firstly, the present disclosure provides a method for knotting glass fiber bundles, including the following steps of:

[0031] equally dividing a glass fiber bundle A and a glass fiber bundle B that are to be connected by knotting into n strands, respectively, and marking the strands as A1-An and B1-Bn, respectively, where n is a natural number greater than or equal to 2; and

[0032] successively knotting and splicing the glass fiber strands A1-An and the glass fiber strands B1-Bn in one-to-one correspondence to form n spliced knots.

[0033] FIG. 1 shows a schematic structure diagram of glass fiber bundles connected by the method for knotting glass fiber bundles according to the present disclosure. As shown in FIG. 1, n spliced knots are staggered in pairs along a lengthwise direction of the glass fiber bundles, and any two spliced knots are prevented from paralleling or overlapping with each other, so that the purpose of reducing the width or diameter of the spliced knots is realized. Further, in order to avoid the overlapping of any two spliced knots, in the lengthwise direction of the glass fiber bundles, a certain distance L can be kept between adjacent spliced knots. For example, the distance between two adjacent spliced knots can be set to 3 cm, 5 cm, 10 cm, etc. The specific value can be selectively set depending on the diameter of the glass fiber bundles, the size of the spliced knots and other factors. In a typical embodiment, the distance L between two adjacent spliced knots among the n spliced knots in the lengthwise direction of the glass fiber bundles is greater than or equal to the length C of the spliced knots.

[0034] Specifically, the n spliced knots can be formed in any one or more of the following ways: knotting by twining, knotting by glue and knotting by air mixing. The specific way of forming the spliced knots has been known in the prior art and will be not described in detail here.

[0035] Compared with the conventional knotting or glue splicing of the whole glass fiber bundle, if two glass fiber bundles are spliced by the method for knotting glass fiber bundles in the present disclosure, the sectional area of the spliced knots is reduced significantly. FIG. 2 shows a schematic structure diagram of glass fiber bundles spliced by conventional knotting by twining, and FIG. 3 shows a schematic structure diagram of glass fiber bundles connected by conventional splicing by glue. If the sectional area of the whole glass fiber bundle (i.e., the sum of sectional areas of all individual fibers in the whole glass fiber bundle) is S, by the knotting method shown in FIG. 2, the sectional area of the knots is 4S; by the splicing method by glue shown in FIG. 3, due to the use of an adhesive, the sectional area of the knot is greater than 2S; and, if the glass fiber bundles are spliced by the knotting method of the present disclosure, the sectional area of each equally divided fiber bundle is S/n, and the sectional area of the knots is (4S/n)+(n1)*S/n=3S/n+S.

[0036] If the glass fiber bundles are equally divided into 2 strands, as shown in FIG. 1, the glass fiber bundle A is divided into sub-bundles A1 and A2, and the glass fiber bundle B is divided into sub-bundles B1 and B2, the total sectional area after splicing is 3S/2+S=2.5S. After the whole glass fiber bundle is divided into two strands which are then spliced, the sectional area is (4S2.5S)/(4S)=37.5% less than the sectional area formed by the conventional bundle knotting and splicing. If the glass fiber bundle is equally divided into 3 strands, the total sectional area after splicing is 3S/3+S=2S, and the sectional area is (4S2S)/(4S)=50% less than the sectional area formed by the conventional bundle knotting and splicing. If the glass fiber bundle is equally divided into 4 strands, the total sectional area after splicing is 3S/4+S=1.75S, and the sectional area is (4S1.75S)/(4S)=56.25% less than the sectional area formed by the conventional bundle knotting and splicing.

[0037] In conclusion, when two glass fiber bundles are spliced by the method for knotting glass fiber bundles in the present disclosure, the spliced knots of each strand are staggered with each other, so that the total sectional area of the formed knots is obviously less than the sectional area of the knots formed by the conventional splicing method. Accordingly, it is smoother to use the spliced glass fiber bundle and easier to cut the spliced glass fiber bundle off during using, and the quality of the produced products is also improved greatly.

[0038] Corresponding to the method for knotting glass fiber bundles, the present disclosure further provides a spliced glass fiber bundle. FIG. 4 shows a schematic structure diagram of an embodiment of the spliced glass fiber bundle, and FIG. 5 shows a schematic structure diagram of another embodiment of the spliced glass fiber bundle. With reference to FIGS. 4 and 5, the spliced glass fiber bundle includes a glass fiber bundle A and a glass fiber bundle B that are spliced with each other. Ends of the glass fiber bundle A and the glass fiber bundle B are equally divided into n strands, and the glass fiber bundle A and the glass fiber bundle B are connected by n spliced knots, where n is a natural number greater than or equal to 2.

[0039] Specifically, the n spliced knots are the same in size and staggered in pairs in a lengthwise direction of the spliced glass fiber bundle. That is, any two spliced knots will not be overlapped with each other, so that the sectional area or diameter of the spliced glass fiber bundle at the spliced knots is minimized. Exemplarily, as shown in FIGS. 4 and 5, the glass fiber bundle A is divided into sub-bundles A1, A2 and A3, and the glass fiber bundle B is divided into sub-bundles B1, B2 and B3. In an embodiment shown in FIG. 4, three spliced knots are successively arranged at intervals; however, in an embodiment shown in FIG. 5, three spliced knots are arranged in random order, and there is still a certain distance L between two adjacent spliced knots in the lengthwise direction of the glass fiber bundle. However, in order to reduce the length of the spliced knots of the glass fiber bundle A and the glass fiber bundle B as far as possible, the distance L should not be too large, as long as it is ensured that any two sliced knots will not be overlapped with each other.

[0040] In a typical embodiment, the distance L between two adjacent spliced knots among the n spliced knots in the lengthwise direction of the spliced glass fiber bundle is greater than or equal to the length C of each spliced knot.

[0041] It is to be noted that the n spliced knots are formed in any one or more of the following ways: knotting by twining, knotting by glue and knotting by air mixing.

[0042] The contents described above can be implemented separately or jointly in various ways, and these transformations shall fall into the protection scope of the present disclosure.

[0043] The specific dimension values of the components listed herein are exemplary numerical values, and the dimension parameters of different components can have different numerical values as required in practical operations.

[0044] It is to be noted that, as used herein, the term comprise/comprising, contain/containing or any other variants thereof is non-exclusive, so that an object or a device containing a series of elements contains not only these elements, but also other elements not listed clearly, or further contains inherent elements of the object or device. Unless otherwise defined herein, an element defined by the statement comprises/comprising an/a . . . does not exclude other identical elements in the object or device including this element.

[0045] The foregoing embodiments are merely used for describing the technical solutions of the present disclosure, and the present disclosure has been described in detail just by preferred embodiments. It should be understood by a person of ordinary skill in the art that modifications or equivalent replacements can be made to the technical features of the present disclosure without departing from the spirit and scope of the technical solutions of the present disclosure, and these modifications or equivalent replacements shall fall into the scope defined by the appended claims of the present disclosure.

INDUSTRIAL APPLICABILITY

[0046] In the present disclosure, by equally dividing ends of two glass fiber bundles into a plurality of sub-bundles, then knotting and connecting the sub-bundles, by staggering the spliced knots of the fiber bundles in pairs, in this way the diameter of the spliced knots is reduced, and the fiber bundles will not be stuck, broken or excessively abraded to cause fuzzes when passing through a fiber guide device, for example, a ceramic eyelet, at a high speed. Moreover, during chopping, the quality problem caused when the spliced knots are not chopped due to their too large size and too high hardness can be avoided, and the probability of defects due to imperfect impregnation of too large spliced knots in glass fiber reinforced products can also be reduced.