Three-dimensional knitting yarn storage device and using method thereof

Abstract

The invention relates to a three-dimensional knitting yarn storage device which is arranged between a yarn carrier body and a yarn hanging point and comprises an upper yarn winding rod, a lower yarn winding rod, yarn and a lifting device. Yarn is wound and stored outside the upper yarn winding rod and the lower yarn winding rod, one end of the yarn is connected with the yarn carrier body, and the other end of the yarn is connected with the yarn hanging point. The lifting device is installed between the upper yarn winding rod and the lower yarn winding rod and used for controlling the distance between the upper yarn winding rod and the lower yarn winding rod. The yarn storage device is arranged between the yarn carrier main body and the yarn hanging point, so that the yarn storage device and the yarn carrier main body are separately arranged, the distribution of the yarn carrier main body is not influenced, the distribution density of the yarn carrier main body on the chassis is favorably improved, and the thickness of a three-dimensional woven preform is ensured.

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 braided composite materials have attracted much attention in the fields of aerospace, national defense, 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 braided composite materials has gradually increased.

[0003] The three-dimensional braiding machine includes a chassis, and a plurality of yarn carriers are arranged on the chassis. When working, the yarn carriers move along a certain path on the chassis, driving the yarns to be interwoven in space to form a corresponding three-dimensional structural preform. At present, the three-dimensional braiding machine usually stores yarns on the yarn carriers, and the yarn carriers include a yarn carrier body and a yarn tube for storing the yarns. The yarn carrier body moves under the drive of the chassis driving mechanism, and the yarn tube is installed on the yarn carrier body for continuously providing yarns. In this integrated structure, the presence of the yarn tube will cause the overall volume of the yarn carrier to be larger, which affects the distribution of the yarn carriers, thereby resulting in a lower distribution density of the yarn carriers on the chassis, and the thickness of the preform is difficult to ensure. Summary of the invention

[0004] The main purpose of the present invention is to propose a three-dimensional weaving 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 weaving yarn storage device is placed between a yarn carrier body and a yarn hanging point, and the three-dimensional weaving yarn storage device comprises 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 of which 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 for controlling 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 comprises

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

[0013] A first slide rail, fixed to the right side of the bottom of the upper yarn winding rod;

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

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

[0016] The scissor structure has one upper end hinged to the first hinge support and the other end hinged to the slider of the first slide rail, and one lower end hinged to the second hinge support and the other end hinged to the slider of the second slide rail.

[0017] Preferably, a plurality of first limiting grooves are provided on the guide rail of the second slide rail along the moving direction of the slider, and a first knob is threadedly connected to the slider of the second slide rail, and the first knob can be inserted into the first limiting groove by rotating it.

[0018] Preferably, the lifting device comprises

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

[0020] 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.

[0021] Preferably, a plurality of second limiting grooves are provided on the guide rail of the third slide rail along the moving direction of the slider, and a second knob is threadedly connected to the slider of the third slide rail, and the second knob can be inserted into the second limiting groove by rotating it.

[0022] A method for using a three-dimensional braiding yarn storage device comprises the following steps:

[0023] S1: First, before loading the machine, design a reasonable yarn hanging length and yarn storage length according to the required length of the woven piece;

[0024] 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 by one to the required number of turns, and connect one end of the yarn to the yarn carrier body on the chassis, and the other end to the yarn hanging point;

[0025] S3: Weaving begins. Several yarn carrier bodies move along a certain path on the chassis, driving the yarns to be interwoven in space to form corresponding three-dimensional structural preforms. During the weaving process, the distance between the upper yarn winding rod and the lower yarn winding rod is controlled by the lifting device, so that the distance between the upper yarn winding rod and the lower yarn winding rod is gradually shortened, and the yarns can be gradually released to participate in the weaving work.

[0026] The present invention provides a three-dimensional weaving 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 It is a structural schematic diagram of the three-dimensional weaving 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 It is a structural schematic diagram of the lifting device in the second embodiment of the present invention;

[0031] Figure 4 is a schematic structural diagram of the second slide rail in the second embodiment of the present invention;

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

[0033] Figure 6 This is a schematic diagram of the structure of the lifting device in the third embodiment of the present invention;

[0034] Figure 7 It is a lifting schematic diagram of the lifting device in the third embodiment of the present invention.

[0035] In the figure:

[0036] 100, yarn carrier body; 200, yarn hanging point; 300, chassis; 400, three-dimensional braiding 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 groove; 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 purpose, technical solutions and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention.

[0041] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than 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.

[0042] 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 limiting the present invention.

[0043] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] Embodiment 1

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

[0046] The yarn 3 is wound and stored outside 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 of which 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 weaving 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 woven piece;

[0050] S2: According to the designed yarn hanging length and yarn storage length, the initial height of the lifting device 4 is adjusted, the yarn 3 is wound around the upper yarn winding rod 1 and the lower yarn 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 installed on the chassis 300 of the three-dimensional knitting machine, and the yarn carrier bodies 100 can be moved under the drive of the driving mechanism of the chassis 300, and a crossbeam is arranged above the chassis 300 as a yarn hanging point 200, and 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 yarns 3 to be interwoven in space to form corresponding three-dimensional weaving preforms 400. During the weaving process, the distance between the upper yarn winding rod 1 and the lower yarn winding rod 2 is controlled by the lifting device 4, so that the distance between the upper yarn winding rod 1 and the lower yarn winding rod 2 is gradually shortened, and the yarns 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 separately arranged. This will not affect the distribution of the yarn carrier body 100, and is beneficial to increasing the distribution density of the yarn carrier body 100 on the chassis 300, thereby ensuring the thickness of the three-dimensional weaving preform 400.

[0054] In a specific embodiment, referring to Figure 2-3 A plurality of grooves 5 are provided at equal intervals on the upper portion of the upper yarn winding rod 1 and the lower portion of the lower yarn winding rod 2. The yarn 3 is wound around the upper yarn winding rod 1 and the lower yarn 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 to be smooth to reduce friction between the yarn 3 and the upper yarn winding rod 1 and the lower yarn 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 they disappear 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] Embodiment 2

[0057] In a specific embodiment, referring to 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 on the left side of the bottom of the upper yarn winding rod 1; the first slide rail 402 is fixed on the right side of the bottom of the upper yarn winding rod 1; the second hinge support 403 is fixed on the left side of the top of the lower yarn winding rod 2; the second slide rail 404 is fixed on 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 structure 405 is a commonly used lifting structure, which is formed by a plurality of support rods hinged by a pin. In this embodiment, by pushing the slider 4041 of the second slide rail 404 to move left and right, the scissor 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, and the following is further designed based on the 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 a few times after the machine is stopped, thereby realizing the function of releasing yarn a few 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] Embodiment 3

[0064] In a specific embodiment, referring to 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 of the third slide rail 411 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 by the support rod 412.

[0068] In a specific implementation scheme, 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. Similar to 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 the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. 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 embodiments of the present invention.

Claims

1. A three-dimensional weaving yarn storage device, characterized in that: Placed between the yarn carrier body and the yarn hanging point, the three-dimensional weaving yarn storage device includes An upper winding rod and a 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 of which 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 for controlling the distance between the upper yarn winding rod and the lower yarn winding rod.

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

3. A three-dimensional weaving yarn storage device according to claim 2, characterized in that: The width and depth of the groove are respectively at their maximum at the top end of the upper yarn winding rod and the bottom end of the lower yarn winding rod, 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 weaving yarn storage device according to claim 1, characterized in that: The lifting device comprises a first hinge support fixed to the left side of the bottom of the upper yarn winding rod; A first slide rail, fixed to the right side of the bottom of the upper yarn winding rod; A second hinge support is fixed to the left side of the top of the lower yarn winding rod; A second slide rail is fixed to the top right side of the lower yarn winding rod; The scissor structure has one upper end hinged to the first hinge support and the other end hinged to the slider of the first slide rail, and one 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 weaving 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, and 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 weaving yarn storage device according to claim 1, characterized in that: The lifting device comprises 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 weaving 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, and 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 weaving 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 woven 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 by one to the required number of turns, 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 be interwoven in space to form corresponding three-dimensional weaving preforms. During the weaving process, the distance between the upper yarn winding rod and the lower yarn winding rod is controlled by the lifting device, so that the distance between the upper yarn winding rod and the lower yarn winding rod is gradually shortened, and the yarns can be gradually released to participate in the weaving work.

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