A multi-directional motion three-dimensional braided yarn mother-direction knot uniformity control device

Abstract

The present invention discloses a multi-directional, three-dimensional braided yarn mother-direction knot uniformity control device. The device comprises a lifting mechanism, a rotating mechanism, and a tightening mechanism. The lifting mechanism drives the tightening mechanism in the vertical direction, while the rotating mechanism drives the tightening mechanism in the circumferential direction. The tightening mechanism tightens the yarn braid cross-section in the mother-direction direction, and the tightening mechanism can adapt to changes in the yarn braid height and radius. The present invention enables the tightening mechanism to move in the circumferential, mother-direction, and feed directions, achieving online control of unit cell shape and position, and uniform and adjustable preform unit cell density, thereby ensuring internal and external uniformity and mother-direction tightness of the product.

Description

Technical Field

[0001] The invention belongs to the technical field of textile machinery, and in particular relates to a multi-directionally moving three-dimensional braided yarn mother-directional knot uniformity control device. Background Art

[0002] With the continuous development of three-dimensional weaving technology, higher requirements are placed on the design of weaving equipment. The yarn tightening device of three-dimensional weaving technology is an indispensable device in weaving production.

[0003] Patent CN 111910340 A, filed by the China Textile Science Research Institute Co., Ltd., discloses a three-dimensional braiding tightening device and method. While tightening the yarn knitting surface through the lifting and lowering motion of the tightening mechanism, issues such as uneven tightening force and unstable adjustment persist. Therefore, a uniform and controllable three-dimensional braided yarn knot tightening device is needed to address these issues. Summary of the Invention

[0004] The purpose of the present invention is to provide a three-dimensional braided yarn knot tightening device that can provide uniform, stable and controllable tightening force in the circumferential, busbar and vertical directions, thereby improving the internal and external uniformity and busbar tightness of the product.

[0005] The technical solution to achieve the purpose of the present invention is: a multi-directional motion three-dimensional braided yarn mother-directional knot uniformity control device, including a lifting mechanism, a rotating mechanism and a tightening mechanism;

[0006] The lifting mechanism drives the tightening mechanism to move in the vertical direction, and the rotating mechanism drives the tightening mechanism to move in the circumferential direction; the tightening mechanism tightens the yarn braiding section in the busbar direction;

[0007] The tightening mechanism adapts to the tightening channel when the yarn braiding height and radius change.

[0008] Furthermore, the lifting mechanism includes a lifting drive device, a lifting seat and a guide column;

[0009] The lifting drive device drives the lifting seat to move up and down in the vertical direction; the guide column is used to position and guide the lifting seat.

[0010] Furthermore, the rotating mechanism includes a rotating drive device, a gear ring and a guide device, wherein the rotating drive device includes a rotating drive motor and a rotating transmission gear;

[0011] The rotary drive device is installed on the lifting seat of the lifting mechanism; the rotary transmission gear is installed on the shaft of the rotary drive motor to drive the rotary mechanism to rotate in the circumferential direction.

[0012] Furthermore, the ring gear is fixed on the guide device, meshed with the rotary transmission gear, and driven by the rotary drive motor to rotate in the circumferential direction.

[0013] Furthermore, the tightening mechanism includes a tightening rod, a tightening drive device, a yarn guide, a connecting plate, a radial drive device and a yarn guide drive device;

[0014] The radial drive device is installed on the gear ring of the rotating mechanism; a connecting plate is provided on the radial drive device, and a tightening drive device and a yarn guide drive device are provided on the connecting plate; a tightening rod is provided on the tightening drive device, and a yarn guide is provided on the yarn guide drive device.

[0015] Furthermore, one end of the tightening rod is connected to the tightening drive device, and the other end passes through the yarn guide channel between the yarn guides to perform the tightening operation; the plane of the tightening rod is parallel to the weaving plane.

[0016] Furthermore, the upper end of the tightening drive device is connected to the connecting plate, and the lower end is connected to the tightening rod. The tightening drive device is adjusted to move up and down to drive the tightening rod to perform the tightening operation.

[0017] Furthermore, the yarn guide driving device is mounted on the connecting plate, the yarn guide is mounted on the yarn guide driving device, and the yarn guide driving device drives the yarn guide to move in a vertical direction.

[0018] Furthermore, the radial drive device is mounted on the gear ring of the rotating mechanism and rotates along with the gear ring.

[0019] Furthermore, the lifting drive device drives the lifting seat to move up and down in the vertical direction, driving the tightening mechanism to move in the vertical direction; the rotary drive motor drives the ring gear to rotate in the circumferential direction, driving the tightening mechanism to move in the circumferential direction; the radial drive device moves in the horizontal direction to control the radial feed of the tightening mechanism; the tightening mechanism performs multi-directional movement in the vertical direction, circumferential direction, and busbar direction.

[0020] Compared with the prior art, the present invention has the following significant advantages: (1) it can make the tightening device move in the circumferential direction, the busbar direction and the vertical direction, so that the shape and position of the three-dimensional woven unit cell can be controlled online and the density of the preform unit cell can be uniformly adjusted; (2) it provides a uniform, stable and controllable tightening force, thereby improving the internal and external uniformity and the busbar tightness of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of the device for controlling uniformity of the mother-direction knot of a three-dimensional braided yarn with multi-directional motion according to the present invention.

[0022] Figure 2 It is a structural diagram of the tightening mechanism in the present invention.

[0023] Figure 3 Schematic diagram of the structure of multiple control devices evenly distributed along the circumference of the gear ring in an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] like Figure 1 As shown, the present invention is a multi-directional motion three-dimensional braided yarn mother-directional knot uniformity control device, comprising a lifting mechanism 1, a rotating mechanism 2 and a tightening mechanism 3;

[0026] The lifting mechanism 1 drives the tightening mechanism 3 to move in the vertical direction, and the rotating mechanism 2 drives the tightening mechanism 3 to move in the circumferential direction; the tightening mechanism 3 tightens the yarn braiding section in the busbar direction;

[0027] The tightening mechanism 3 can adapt to the tightening channel when the yarn braiding height and radius change.

[0028] Furthermore, the lifting mechanism 1 includes a lifting drive device 11, a lifting seat 12 and a guide column 13;

[0029] The lifting drive device 11 drives the lifting seat 12 to move up and down in the vertical direction; the guide column 13 is used to position and guide the lifting seat 12.

[0030] Furthermore, the rotating mechanism 2 includes a rotating drive device 21, a gear ring 22 and a guide device 23, wherein the rotating drive device 21 includes a rotating drive motor 211 and a rotating transmission gear 212;

[0031] The rotation drive device 21 is installed on the lifting seat 12 of the lifting mechanism 1; the rotation transmission gear 212 is installed on the shaft of the rotation drive motor 211 to drive the rotating mechanism 2 to rotate in the circumferential direction.

[0032] Furthermore, the ring gear 22 is fixed on the guide device 23 , meshed with the rotation transmission gear 212 , and driven by the rotation drive motor 211 to rotate in the circumferential direction.

[0033] Furthermore, the tightening mechanism 3 includes a tightening rod 31, a tightening drive device 32, a yarn guide 33, a connecting plate 34, a radial drive device 35 and a yarn guide drive device 36;

[0034] The radial drive device 35 is installed on the ring gear 22 of the rotating mechanism 2; a connecting plate 34 is provided on the radial drive device 35, and a tightening drive device 32 and a yarn guide drive device 36 are provided on the connecting plate 34; a tightening rod 31 is provided on the tightening drive device 32, and a yarn guide 33 is provided on the yarn guide drive device 36.

[0035] Furthermore, one end of the tightening rod 31 is connected to the tightening drive device 32, and the other end passes through the yarn guide channel between the yarn guides 33 to perform the tightening operation; the plane of the tightening rod 31 is parallel to the weaving plane.

[0036] Furthermore, the upper end of the tightening drive device 32 is connected to the connecting plate 34, and the lower end is connected to the tightening rod 31. The tightening drive device 32 can be adjusted up and down to drive the tightening rod 31 to perform the tightening operation.

[0037] Furthermore, the yarn guide driving device 36 is mounted on the connecting plate 34 , and the yarn guide 33 is mounted on the yarn guide driving device 36 . The yarn guide driving device 36 can drive the yarn guide 33 to move in a vertical direction.

[0038] Furthermore, the radial driving device 35 is mounted on the ring gear 22 of the rotating mechanism 2 and can rotate along with the ring gear 22 .

[0039] Furthermore, the lifting drive device 11 drives the lifting seat 12 to move up and down in the vertical direction, driving the tightening mechanism 3 to move in the vertical direction; the rotary drive motor 211 drives the ring gear 22 to rotate in the circumferential direction, driving the tightening mechanism 3 to move in the circumferential direction; the radial drive device 35 moves in the horizontal direction to control the radial feed of the tightening mechanism 3; the tightening mechanism 3 can perform multi-directional movement in the vertical direction, the circumferential direction, and the busbar direction.

[0040] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] Example

[0042] The multi-directional three-dimensional woven yarn mother-directional flower node uniformity control device provided in this embodiment is installed on the top mounting seat I1, and the three-dimensional woven fabric I2 is located below the device. A lifting mechanism 1 is installed on the mounting seat I1 to drive the entire mechanism to move in the vertical direction; a rotating mechanism 2 is installed at the end of the lifting mechanism 1, and a tightening mechanism 3 is installed on the outer edge of the gear ring 22 of the rotating mechanism 2.

[0043] In this embodiment, the lifting mechanism 1 is driven by a lifting drive device 11. In this embodiment, the lifting drive device is driven by an electric cylinder. The guide seats 13 are evenly distributed on the lifting seat 12 to ensure the smooth lifting action and realize the vertical movement of the mechanism along the weaving direction of the three-dimensional woven preform.

[0044] In this embodiment, the rotating mechanism 2 is powered by the driving device 21, which engages with the gear ring 22 through the transmission gear 212 to drive the mechanism to rotate circumferentially, thereby achieving circumferential motion of the mechanism at each flower node of the preform.

[0045] In this embodiment, the radial drive device 35 of the tightening mechanism 3 is installed on the outer edge of the ring gear 22 and rotates axially with the ring gear. The tightening drive device 32 and the yarn guide drive device 36 are installed on the connecting plate 34.

[0046] In this embodiment, the radial drive 35 uses an electric cylinder to drive the connecting plate 34 in radial direction, facilitating the movement of the tightening rod 31 to the appropriate location of the flower node for tightening. The tightening process is completed by a four-bar mechanism consisting of the tightening drive 32, the yarn guide drive 36, the tightening rod 31, and the yarn guide 33.

[0047] like Figure 2 As shown, the yarn guide 33 in this embodiment has a pointed lower end, a hollow yarn guide channel in the middle and a rotating shaft. The yarn guide 33 is mounted on a yarn guide drive 36, and the tightening rod 31 is hinged to the lower end of the tightening drive 32 and the rotating shaft of the yarn guide 33. In this embodiment, the yarn guide drive 36 and the tightening drive 32 are used, but not limited to, cylinders. Figure 3 As shown, in order to improve the tightening efficiency, the tightening mechanisms 3 in this embodiment can be evenly distributed in multiple numbers along the circumferential direction of the gear ring, and multiple flower nodes can be tightened simultaneously.

[0048] One operating condition of this embodiment is as follows: After three-dimensional weaving completes a certain layer of the preform, the lifting mechanism 1 is driven by the lifting drive 11 to descend to a suitable position. The drive 21 drives the ring gear 22 to rotate the tightening mechanism 3 to the zero-position tightening knot. The radial drive 35 and the yarn guide drive 36 move simultaneously to position the yarn at the zero-position knot and form an opening. At this point, the tightening drive 32 retracts and drives the tightening rod 31 to tighten the zero-position knot. After the zero-position knot is tightened, the radial drive 35, the yarn guide drive 36, and the tightening drive 32 are simultaneously retracted. The drive 21 drives the ring gear 22 to rotate to the next knot. The tightening process is repeated until the knot of this layer is tightened and the lifting mechanism 1 is retracted, ready for tightening the knot of the next layer.

[0049] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Any changes, additions or substitutions made by ordinary technicians in this technical field within the scope of the present invention should fall within the scope of protection of the present invention.

Claims

1. A multi-directional three-dimensional braided yarn mother-direction knot uniformity control device, characterized in that: It comprises a lifting mechanism (1), a rotating mechanism (2) and a tightening mechanism (3); The lifting mechanism (1) drives the tightening mechanism (3) to move in the vertical direction, and the rotating mechanism (2) drives the tightening mechanism (3) to move in the circumferential direction; the tightening mechanism (3) tightens the yarn braiding section in the direction of the main line; the tightening mechanism (3) adapts to the tightening channel when the yarn braiding height and radius change; The lifting mechanism (1) comprises a lifting drive device (11), a lifting seat (12) and a guide column (13); the lifting drive device (11) drives the lifting seat (12) to move up and down in a vertical direction; the guide column (13) is used to position and guide the lifting seat (12); The rotating mechanism (2) comprises a rotating drive device (21), a ring gear (22) and a guide device (23); the rotating drive device (21) comprises a rotating drive motor (211) and a rotating transmission gear (212); the rotating drive device (21) is mounted on the lifting seat (12) of the lifting mechanism (1); the rotating transmission gear (212) is mounted on the shaft of the rotating drive motor (211); the ring gear (22) is fixed on the guide device (23), meshed with the rotating transmission gear (212), and driven by the rotating drive motor (211) to rotate in the circumferential direction; The tightening mechanism (3) comprises a tightening rod (31), a tightening drive device (32), a yarn guide (33), a connecting plate (34), a radial drive device (35) and a yarn guide drive device (36); the radial drive device (35) is mounted on the gear ring (22) of the rotating mechanism (2); a connecting plate (34) is provided on the radial drive device (35), and a tightening drive device (32) and a yarn guide drive device (36) are provided on the connecting plate (34); a tightening rod (31) is provided on the tightening drive device (32), and a yarn guide (33) is provided on the yarn guide drive device (36).

2. The multi-directional three-dimensional braided yarn mother-direction knot uniformity control device according to claim 1, characterized in that: One end of the tightening rod (31) is connected to the tightening drive device (32), and the other end passes through the yarn guide channel between the yarn guides (33) to perform the tightening operation; the plane of the tightening rod (31) is parallel to the weaving plane.

3. The multi-directional three-dimensional braided yarn mother-direction knot uniformity control device according to claim 1, characterized in that: The upper end of the tightening drive device (32) is connected to the connecting plate (34), and the lower end is connected to the tightening rod (31). The tightening drive device (32) telescopically drives the tightening rod (31) to perform a tightening operation.

4. The multi-directional three-dimensional braided yarn mother-direction knot uniformity control device according to claim 1, characterized in that: The yarn guide drive device (36) is mounted on the connecting plate (34), and the yarn guide (33) is mounted on the yarn guide drive device (36). The yarn guide drive device (36) drives the yarn guide (33) to move in a vertical direction.

5. The multi-directional three-dimensional braided yarn mother-direction knot uniformity control device according to claim 1, characterized in that: The lifting drive device (11) drives the lifting seat (12) to move up and down in the vertical direction, driving the tightening mechanism (3) to move in the vertical direction; the rotary drive motor (211) drives the gear ring (22) to rotate in the circumferential direction, driving the tightening mechanism (3) to move in the circumferential direction; the radial drive device (35) moves in the horizontal direction to control the radial feed of the tightening mechanism (3); the tightening mechanism (3) performs multi-directional movement in the vertical direction, the circumferential direction, and the busbar direction.

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