Three-dimensional braided yarn storage device and method of use

Abstract

The present application relates to a kind of three-dimensional weaving yarn storage device, between carrier main body and yarn hanging point, the three-dimensional weaving yarn storage device includes upper winding bar, lower winding bar, yarn and lifting device;Yarn is wound and stored in the upper winding bar and lower winding bar, one end is connected with the carrier main body, the other end is connected with the yarn hanging point;Lifting device is installed between the upper winding bar and lower winding bar, for controlling the distance between the upper winding bar and lower winding bar.The present application will be placed between carrier main body and yarn storage device and yarn hanging point, make yarn storage device and carrier main body separate setting, so as not to affect the distribution of carrier main body, it is favorable to improve the distribution density of carrier main body on the bottom disc, to ensure the thickness of three-dimensional weaving preform.

Description

Technical Field

[0001] The present invention belongs to the technical field of three-dimensional weaving, and in particular relates to a three-dimensional weaving yarn storage device and a use method thereof. Background Art

[0002] Three-dimensional woven composite materials have attracted much attention in the fields of aerospace, national defense, military industry, rail transportation, etc. due to their excellent mechanical properties such as high strength and modulus, anti-delamination, impact resistance, and the characteristics of integrated forming of complex components. In recent years, the demand for three-dimensional woven composite materials has gradually increased.

[0003] A three-dimensional braiding machine includes a chassis with several yarn carriers mounted on it. During operation, the yarn carriers move along a specific path on the chassis, driving the yarns to interweave in space to form a corresponding three-dimensional structural preform. Currently, three-dimensional braiding machines typically store yarn on yarn carriers. The yarn carriers include a yarn carrier body and a yarn tube for storing the yarn. The yarn carrier body moves under the drive of the chassis drive mechanism, while the yarn tube is mounted on the yarn carrier body to continuously supply yarn. This integrated structure results in a larger overall size of the yarn carriers due to the presence of the yarn tube, which affects the distribution of the yarn carriers, resulting in a lower distribution density of the yarn carriers on the chassis, making it difficult to ensure the thickness of the preform. Summary of the Invention

[0004] The main purpose of the present invention is to propose a three-dimensional braiding yarn storage device and a method of using the same, which can effectively solve the problems in the background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A three-dimensional knitting yarn storage device is placed between the yarn carrier body and the yarn hanging point, and the three-dimensional knitting yarn storage device includes an upper yarn winding rod and a lower yarn winding rod;

[0007] The yarn is wound and stored outside the upper yarn winding rod and the lower yarn winding rod, one end of which is connected to the yarn carrier body and the other end is connected to the yarn hanging point;

[0008] The lifting device is installed between the upper yarn winding rod and the lower yarn winding rod and is used to control the distance between the upper yarn winding rod and the lower yarn winding rod.

[0009] Preferably, a plurality of grooves are formed at equal intervals on the upper portion of the upper yarn winding rod and the lower portion of the lower yarn winding rod.

[0010] Preferably, the width and depth of the groove are maximum at the top end of the upper winding rod and the bottom end of the lower winding rod, respectively, and gradually decrease around the upper winding rod and the lower winding rod until they disappear at half the height of the upper winding rod and the lower winding rod.

[0011] Preferably, the lifting device includes

[0012] A first hinge support is fixed at the bottom left side of the upper yarn winding rod;

[0013] A first sliding rail is fixed at the bottom right side of the upper yarn winding rod;

[0014] A second hinge support is fixed at the top left side of the lower yarn winding rod;

[0015] A second sliding rail is fixed at the top right side of the lower yarn winding rod;

[0016] A scissor structure is hingedly connected at one end to the first hinge support and at the other end to the sliding block of the first sliding rail, and is hingedly connected at one end to the second hinge support and at the other end to the sliding block of the second sliding rail.

[0017] Preferably, a plurality of first limiting grooves are formed in the guide rail of the second sliding rail along the moving direction of the sliding block, and a first knob is threadedly connected to the sliding block of the second sliding rail, and the first knob can be inserted into the first limiting groove by rotating the first knob.

[0018] Preferably, the lifting device comprises

[0019] A third sliding rail is vertically arranged between the upper yarn winding rod and the lower yarn winding rod, and is fixedly connected at one end to the lower yarn winding rod;

[0020] A support rod is fixedly connected at one end to the sliding block of the third sliding rail and at the other end to the upper yarn winding rod.

[0021] Preferably, a plurality of second limiting grooves are formed in the guide rail of the third sliding rail along the moving direction of the sliding block, and a second knob is threadedly connected to the sliding block of the third sliding rail, and the second knob can be inserted into the second limiting groove by rotating the second knob.

[0022] A method for using a three-dimensional weaving yarn storage device, comprising the following steps:

[0023] S1: First, before weaving, design reasonable yarn hanging length and yarn storage length according to the length of the required woven product;

[0024] S2: Adjust the initial height of the yarn storage device according to the designed yarn hanging length and yarn storage length, wind the yarn along the upper yarn winding rod and the lower yarn winding rod to the required number of turns, and connect one end of the yarn to the carrier body on the base plate and the other end to the yarn hanging point;

[0025] S3: Start weaving, and a plurality of carrier bodies move on the base plate along a certain path to drive the yarn to interweave in space to form a corresponding three-dimensional structure preform. During the weaving process, the distance between the upper yarn winding rod and the lower yarn winding rod is gradually shortened by the lifting device, so that the yarn can be gradually released for weaving work.

[0026] The present invention provides a three-dimensional braiding yarn storage device and a method of using the same, which have the following beneficial effects:

[0027] The present invention places the yarn storage device between the yarn carrier body and the yarn hanging point, so that the yarn storage device and the yarn carrier body are set separately. This will not affect the distribution of the yarn carrier body, which is beneficial to increasing the distribution density of the yarn carrier body on the chassis, thereby ensuring the thickness of the three-dimensional woven preform. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the structure of the three-dimensional braiding yarn storage device of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the upper yarn winding rod of the present invention;

[0030] Figure 3 Schematic diagram of the structure of the lifting device in the second embodiment of the present invention;

[0031] Figure 4 Schematic diagram of the structure of the second slide rail in the second embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the lifting device in the second embodiment of the present invention;

[0033] Figure 6 Schematic diagram of the structure of the lifting device in the third embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of the lifting device in Example 3 of the present invention.

[0035] In the picture:

[0036] 100, yarn carrier body; 200, yarn hanging point; 300, chassis; 400, three-dimensional braided preform;

[0037] 1. Upper winding rod; 2. Lower winding rod; 3. Yarn; 4. Lifting device; 5. Groove;

[0038] 401, first hinge support; 402, first slide rail; 403, second hinge support; 404, second slide rail; 4041, slider; 4042, guide rail; 405, scissor structure; 406, first limit slot; 407, first knob;

[0039] 411. Third slide rail; 412. Support rod; 413. Second limiting groove; 414. Second knob. DETAILED DESCRIPTION

[0040] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below in conjunction with the drawings of the present application.

[0041] The technical solutions in the present application will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the protection scope of the present application.

[0042] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0043] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited. In addition, the terms "mounting", "connecting", "connection" should be broadly understood, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] Embodiment one

[0045] Reference Figure 1-2 A three-dimensional weaving yarn storage device is arranged between the yarn carrier body 100 and the yarn hanging point 200, and the three-dimensional weaving yarn storage device comprises an upper yarn winding rod 1, a lower yarn winding rod 2, a yarn 3 and a lifting device 4.

[0046] The yarn 3 is wound and stored on the upper yarn winding rod 1 and the lower yarn winding rod 2, one end of which is connected to the yarn carrier body 100, and the other end is connected to the yarn hanging point 200.

[0047] The lifting device 4 is installed between the upper yarn winding rod 1 and the lower yarn winding rod 2, and is used to control the distance between the upper yarn winding rod 1 and the lower yarn winding rod 2.

[0048] The present invention also provides a method for using a three-dimensional braiding yarn storage device, comprising the following steps:

[0049] S1: First, before loading the machine, design a reasonable yarn hanging length and yarn storage length according to the required length of the knitted piece;

[0050] S2: According to the designed yarn hanging length and yarn storage length, the initial height of the lifting device 4 is adjusted, and the yarn 3 is wound around the upper winding rod 1 and the lower winding rod 2 one by one to the required number of turns, and one end of the yarn 3 is connected to the yarn carrier body 100 on the chassis 300, and the other end is connected to the yarn hanging point 200;

[0051] It should be noted that a plurality of yarn carrier bodies 100 are mounted on the chassis 300 of the three-dimensional knitting machine. The yarn carrier bodies 100 can be moved under the drive of the chassis 300 driving mechanism. A crossbeam is provided above the chassis 300 as a yarn hanging point 200. Each yarn carrier body 100 corresponds to a three-dimensional knitting yarn storage device.

[0052] S3: Start weaving. Several yarn carrier bodies 100 move along a certain path on the chassis 300, driving the yarn 3 to be interwoven in space to form a corresponding three-dimensional weaving preform 400. During the weaving process, the distance between the upper winding rod 1 and the lower winding rod 2 is controlled by the lifting device 4, so that the distance between the upper winding rod 1 and the lower winding rod 2 is gradually shortened, and the yarn 3 can be gradually released to participate in the weaving work.

[0053] The present invention places the yarn storage device between the yarn carrier body 100 and the yarn hanging point 200, so that the yarn storage device and the yarn carrier body 100 are set separately. This will not affect the distribution of the yarn carrier body 100, and is conducive to increasing the distribution density of the yarn carrier body 100 on the chassis 300, thereby ensuring the thickness of the three-dimensional woven preform 400.

[0054] In a specific embodiment, reference Figure 2-3 A number of grooves 5 are provided at equal intervals on the upper part of the upper winding rod 1 and the lower part of the lower winding rod 2. The yarn 3 is wound around the upper winding rod 1 and the lower winding rod 2 through the grooves 5 in circles to avoid crossing of the yarn 3 and ensure smooth yarn placement. Furthermore, the grooves 5 are polished smooth to reduce the friction between the yarn 3 and the upper winding rod 1 and the lower winding rod 2.

[0055] In a specific embodiment, the width and depth of the groove 5 are maximum at the top end of the upper winding rod 1 and the bottom end of the lower winding rod 2, respectively, and gradually decrease around the upper winding rod 1 and the lower winding rod 2 until it disappears at half the height of the upper winding rod 1 and the lower winding rod 2, so that the contact path of the yarn 3 on the upper winding rod 1 and the lower winding rod 2 is as smooth as possible, reducing the shear force of the upper winding rod 1 and the lower winding rod 2 on the yarn 3 when the yarn 3 is tensioned.

[0056] Example 2

[0057] In a specific embodiment, reference Figure 3-5 , the lifting device 4 includes a first hinge support 401, a first slide rail 402, a second hinge support 403, a second slide rail 404 and a scissor structure 405;

[0058] The first hinge support 401 is fixed to the left side of the bottom of the upper yarn winding rod 1; the first slide rail 402 is fixed to the right side of the bottom of the upper yarn winding rod 1; the second hinge support 403 is fixed to the left side of the top of the lower yarn winding rod 2; the second slide rail 404 is fixed to the right side of the top of the lower yarn winding rod 2; one end of the upper part of the scissors-fork structure 405 is hinged to the first hinge support 401, and the other end is hinged to the slider of the first slide rail 402, and one end of the lower part is hinged to the second hinge support 403, and the other end is hinged to the slider 4041 of the second slide rail 404.

[0059] The scissor-type structure 405 is a commonly used lifting structure, which is composed of several support rods hinged by pins. In this embodiment, by pushing the slider 4041 of the second slide rail 404 to move left and right, the scissor-type structure 405 can be controlled to extend and retract, thereby controlling the distance between the upper winding rod 1 and the lower winding rod 2.

[0060] The movement of the slider of the second slide rail 404 can be controlled electrically or manually. The following is a further design based on manual control.

[0061] In a specific embodiment, a plurality of first limiting grooves 406 are provided on the guide rail 4042 of the second slide rail 404 along the moving direction of the slider 4041 , and a first knob 407 is threadedly connected to the slider 4041 of the second slide rail 404 , and the first knob 407 can be inserted into the first limiting groove 406 by rotating it.

[0062] By manually controlling the movement of the slider of the second slide rail 404, the distance between the upper winding rod 1 and the lower winding rod 2 can be shortened multiple times by a small amount after the machine is stopped, thereby realizing the function of releasing yarn in small amounts multiple times. In order to prevent the slider from moving accidentally, after the slider moves, turn the first knob 407 to insert it into the first limit groove to limit it.

[0063] Example 3

[0064] In a specific embodiment, reference Figure 6-7 , the lifting device 4 includes a third slide rail 411 and a support rod 412;

[0065] The third slide rail 411 is vertically arranged between the upper yarn winding rod 1 and the lower yarn winding rod 2, and one end is fixedly connected to the lower yarn winding rod 2;

[0066] One end of the support rod 412 is fixedly connected to the slider of the third slide rail 411 , and the other end is fixedly connected to the upper yarn winding rod 1 .

[0067] In this embodiment, by pushing the slider of the third slide rail 411 to move up and down, the distance between the upper yarn winding rod 1 and the lower yarn winding rod 2 can be controlled through the support rod 412.

[0068] In a specific embodiment, a plurality of second limiting grooves 413 are provided on the guide rail of the third slide rail 411 along the moving direction of the slider, and a second knob 414 is threadedly connected to the slider of the third slide rail 411. The second knob 414 can be inserted into the second limiting groove 413 by rotating it. As in the second embodiment, in order to prevent the slider from moving accidentally, after the slider moves, the second knob 414 is rotated to insert it into the second limiting groove 413 to limit it.

[0069] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A three-dimensional knitting yarn storage device, characterized in that: Placed between the yarn carrier body and the yarn hanging point, the three-dimensional braided yarn storage device includes Upper winding rod and lower winding rod; The yarn is wound and stored outside the upper yarn winding rod and the lower yarn winding rod, one end of which is connected to the yarn carrier body and the other end is connected to the yarn hanging point; The lifting device is installed between the upper yarn winding rod and the lower yarn winding rod and is used to control the distance between the upper yarn winding rod and the lower yarn winding rod.

2. A three-dimensional braiding yarn storage device according to claim 1, characterized in that: A plurality of grooves are provided at equal intervals on the upper portion of the upper yarn winding rod and the lower portion of the lower yarn winding rod.

3. A three-dimensional braiding yarn storage device according to claim 2, characterized in that: The width and depth of the groove are maximum at the top end of the upper yarn winding rod and the bottom end of the lower yarn winding rod respectively, and gradually decrease around the upper yarn winding rod and the lower yarn winding rod until they disappear at half the height of the upper yarn winding rod and the lower yarn winding rod.

4. A three-dimensional braiding yarn storage device according to claim 1, characterized in that: The lifting device includes a first hinge support fixed to the left side of the bottom of the upper winding rod; a first slide rail, fixed to the right side of the bottom of the upper yarn winding rod; a second hinge support fixed to the left side of the top of the lower yarn winding rod; a second slide rail fixed to the top right side of the lower yarn winding rod; The scissor structure has an upper end hinged to the first hinge support and the other end hinged to the slider of the first slide rail, and a lower end hinged to the second hinge support and the other end hinged to the slider of the second slide rail.

5. A three-dimensional braiding yarn storage device according to claim 4, characterized in that: A plurality of first limiting grooves are provided on the guide rail of the second slide rail along the moving direction of the slider. A first knob is threadedly connected to the slider of the second slide rail. The first knob can be inserted into the first limiting groove by rotating it.

6. A three-dimensional braiding yarn storage device according to claim 1, characterized in that: The lifting device includes a third slide rail, which is vertically arranged between the upper yarn winding rod and the lower yarn winding rod, and one end of which is fixedly connected to the lower yarn winding rod; A support rod, one end of which is fixedly connected to the slider of the third slide rail, and the other end of which is fixedly connected to the upper yarn winding rod.

7. A three-dimensional braiding yarn storage device according to claim 6, characterized in that: A plurality of second limiting grooves are provided on the guide rail of the third slide rail along the moving direction of the slider. A second knob is threadedly connected to the slider of the third slide rail. The second knob can be inserted into the second limiting groove by rotating it.

8. A method for using a three-dimensional braiding yarn storage device according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: First, before loading the machine, design a reasonable yarn hanging length and yarn storage length according to the required length of the knitted piece; S2: According to the designed yarn hanging length and yarn storage length, adjust the initial height of the yarn storage device, wind the yarn along the upper winding rod and the lower winding rod one circle at a time to the required number of circles, and connect one end of the yarn to the yarn carrier body on the chassis and the other end to the yarn hanging point; S3: Weaving begins. Several yarn carrier bodies move along a certain path on the chassis, driving the yarns to interweave in space to form corresponding three-dimensional weaving preforms. During the weaving process, the distance between the upper winding rod and the lower winding rod is controlled by the lifting device, so that the distance between the upper winding rod and the lower winding rod is gradually shortened, and the yarns can be gradually released to participate in the weaving work.

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