A narrow-slit channel single-sided variable-range yarn feeding device and method

Abstract

This invention discloses a single-sided variable-range yarn feeding device and method for narrow-slit channels, belonging to the field of three-dimensional fabric technology. It includes a yarn pushing mechanism, a yarn feeding mechanism, and a yarn clamping mechanism, all mounted on a yarn feeding platform. These three mechanisms cooperate to achieve single-sided variable-range yarn feeding motion. Specifically, the yarn feeding mechanism uses a servo motor to drive the yarn feeding sword to achieve reciprocating linear yarn feeding motion; the yarn pushing mechanism's pushing blade is driven by a pushing cylinder to move on a guide rail, achieving reciprocating movement of the yarn at a fixed position; and the yarn clamping mechanism's clamping blade is driven by a clamping cylinder to clamp the yarn carried by the pushing mechanism. This invention has a compact structure, novel and reasonable design, and can achieve single-sided, narrow-slit, variable-range yarn feeding. It is highly practical, has good performance, and is easy to promote.

Description

Technical Field

[0001] This invention belongs to the field of three-dimensional fabric technology, and in particular relates to a narrow-slit channel single-sided variable-range yarn feeding device and yarn feeding method. Background Technology

[0002] Three-dimensional fabrics are a new type of composite material that has emerged in the last two decades. They are a rising star among composite materials. Using three-dimensional integral fabrics as reinforcement, their structure significantly improves many aspects of the mechanical properties of composite materials. They fundamentally overcome the shortcomings of traditional laminates, such as low interlaminar shear strength and easy delamination. They have been widely used in aerospace, military, automotive, medical and advanced sports servers and other fields.

[0003] The invention patent "A follow-up swing yarn feeding and sewing device and method" (publication number: CN 115976747A) introduces a yarn feeding device and method. The swing yarn feeding mechanism and the continuous sewing mechanism cooperate to realize the yarn feeding movement. However, the fixed position of the cooperation limits the size and geometry of the yarn feeding fabric, and cannot complete the yarn feeding with variable curvature and variable thickness.

[0004] Therefore, it is essential to develop a narrow-slit channel single-sided variable-range yarn feeding device and method. Summary of the Invention

[0005] The problem this invention aims to solve is to provide a narrow-slit channel single-sided variable-range yarn feeding device and method, which is suitable for completing the radial yarn feeding motion of weaving three-dimensional fabrics on one side; it is applicable to the yarn feeding and weaving process of three-dimensional fabrics with different thicknesses and geometric dimensions. Its structure is compact, its design is novel and reasonable, it reduces labor intensity, improves production efficiency and product quality, has precise control, good performance, and facilitates the automation of single-sided yarn feeding.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a narrow-slit channel single-sided variable-range yarn feeding device, including a yarn pushing mechanism, a yarn feeding mechanism, and a yarn clamping mechanism. The yarn pushing mechanism, the yarn feeding mechanism, and the yarn clamping mechanism are all installed on the yarn feeding platform. The yarn pushing mechanism and the yarn feeding mechanism are arranged in a 90° position to cooperate with each other. The yarn feeding mechanism and the yarn clamping mechanism are arranged in parallel. The yarn pushing mechanism, the yarn feeding mechanism, and the yarn clamping mechanism cooperate with each other to realize the single-sided variable-range yarn feeding movement.

[0007] The yarn pushing mechanism includes a yarn pushing plate, which is mounted on a guide rail slider. The yarn pushing plate is driven by a yarn pushing cylinder to reciprocate on the guide rail. The yarn pushing cylinder pushes the yarn pushing plate to achieve precise control of the yarn position. A ceramic ring is installed on the yarn pushing plate to reduce the friction between the yarn and the yarn pushing plate and prevent yarn wear.

[0008] The yarn guiding mechanism includes a yarn guiding sword, which is mounted on a yarn guiding sword fixing plate. The yarn guiding sword fixing plate is connected to the linear module via a slider connecting piece. The yarn guiding sword is located on one side of the linear module. Under the precise control of the servo motor, the yarn guiding sword realizes a reciprocating yarn guiding motion with varying stroke.

[0009] The yarn clamping mechanism includes a yarn clamping plate, which is connected to a yarn clamping cylinder via a yarn clamping rod. The yarn clamping cylinder is mounted on a yarn clamping cylinder seat and is rotatably connected to the yarn clamping cylinder seat. The yarn clamping rod is L-shaped and includes a long side and a short side. The yarn clamping plate is mounted on the end of the long side of the yarn clamping rod. The end of the short side of the yarn clamping rod is hinged to the output end of the yarn clamping cylinder via a pin. The connecting hole at the hinge of the yarn clamping rod is designed as an elongated hole to allow the yarn clamping cylinder to rotate relative to the yarn clamping cylinder seat while pushing the cylinder arm to extend and retract. The yarn clamping cylinder seat is used to accurately fix the position of the yarn clamping cylinder.

[0010] Furthermore, the yarn guiding platform includes a base plate, on which a yarn pushing cylinder fixing seat is installed. The yarn pushing cylinder fixing seat is used to fix and position the yarn pushing mechanism. A yarn clamping platform is provided on the base plate at the position corresponding to the yarn guiding end of the yarn guiding sword. The yarn guiding sword clamps the yarn on the yarn clamping platform under the drive of the yarn clamping cylinder. The yarn clamping platform is the platform for holding the yarn in the yarn clamping mechanism, thereby realizing the stable locking of the yarn. A yarn clamping connecting rod fixing seat is installed on the base plate on one side of the yarn clamping rod. The yarn clamping connecting rod fixing seat is rotatably connected to the yarn clamping rod. A rolling bearing is installed in the yarn clamping connecting rod fixing seat to realize the rotation of the yarn clamping action. A yarn block is installed on the base plate on one side of the yarn guiding mechanism. A ceramic ring is installed in the yarn block. The yarn block guides the yarn from the outside into the yarn guiding device, so that the yarn has a reasonable yarn path.

[0011] Furthermore, the yarn-drawing end of the yarn-drawing sword is shaped like an inclined figure 7.

[0012] Furthermore, the end of the yarn pusher is designed as a fork-shaped structure with a gap in the middle. When the yarn pusher is pushed out to the yarn clamping mechanism, the yarn clamping platform enters the gap. At this time, the yarn clamping plate and the yarn clamping platform clamp the yarn in the gap.

[0013] Furthermore, a support frame for mounting ceramic rings is provided on one side of the gap on the fork-shaped structure.

[0014] Furthermore, the yarn feeding mechanism also includes a fixing block, and the linear module is mounted on the base plate through the fixing block. The mounting holes on the fixing block correspond one-to-one with the mounting holes on the base plate, and the fixing block enables the linear module to be precisely mounted on the yarn feeding platform.

[0015] The present invention also provides a method for single-sided variable stroke yarn feeding in a narrow slit channel, comprising the following steps:

[0016] S1: When the yarn guide sword is in the initial non-extended position, and the yarn pusher cylinder in the yarn pusher mechanism contracts to drive the yarn pusher plate to the initial non-extended position, the yarn is introduced into the yarn pusher plate from the ceramic ring of the yarn block. At this time, the yarn clamping cylinder in the yarn clamping mechanism pushes the yarn clamping plate at the end of the yarn clamping rod to clamp the yarn guide.

[0017] S2: The yarn guide sword pushes out the yarn with a predetermined stroke under the precise drive of the servo motor. Since the yarn guide is clamped by the yarn clamping mechanism, the required yarn is pulled out from the yarn spool by the yarn guide sword.

[0018] S3: After the yarn is drawn in, the yarn drawing sword retracts to the initial non-extended position, and the yarn clamping mechanism and the yarn pushing mechanism remain stationary. At this time, the yarn is retained in the fabric due to friction with the fabric.

[0019] S4: The yarn clamping plate releases the yarn under the action of the yarn clamping cylinder contraction. The fabric rotates or the yarn guiding platform moves to align the yarn guiding sword with the next yarn guiding position. The yarn pushing cylinder pushes the yarn pushing plate to push the generated yarn to the yarn clamping platform.

[0020] S5: In the yarn clamping mechanism, the yarn clamping cylinder pushes the yarn clamping plate at the end of the yarn clamping rod to clamp the yarn on the yarn clamping platform. After clamping the yarn, the yarn pushing cylinder in the yarn pushing mechanism drives the yarn pushing plate to retract to the initial non-extended position, and the yarn guiding sword also retracts to the initial non-extended position, thus completing the yarn guiding movement in one cycle.

[0021] By repeating the above steps, continuous yarn feeding can be achieved.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) The yarn pushing mechanism of the present invention achieves precise control of the yarn position through the guide rail slider, thereby enabling the yarn to enter the fabric in parallel to realize the yarn guiding action; compared with the large-angle opening of the yarn caused by the existing yarn guiding technology, the precise control of the yarn pushing mechanism enables the yarn guiding sword to achieve precise yarn guiding in a narrow channel.

[0024] (2) The yarn clamping mechanism of the present invention uses a yarn clamping cylinder to drive a yarn clamping rod to achieve intermittent clamping of the yarn; in order to achieve the up and down floating distance of the yarn clamping action, the pin moves in the elongated hole in the yarn clamping rod.

[0025] (3) In the linear module of the present invention, the servo motor precisely drives the slider connecting piece to drive the yarn guide sword to realize the reciprocating yarn guide motion with variable stroke; under the precise control of the servo motor, the yarn guide sword can adjust the yarn guide length according to production needs.

[0026] (4) The yarn feeding platform of the present invention is used to support the yarn pushing mechanism, the yarn feeding mechanism and the yarn clamping mechanism, and to achieve precise positioning between the three. At the same time, it can be connected to the overall equipment for positioning according to engineering needs, or it can be connected to the linear module to realize the longitudinal movement of the entire device.

[0027] This invention allows for continuous yarn feeding from only one side of the fabric, enabling variable-range yarn feeding based on fabric width variations, significantly improving operability in manufacturing complex and irregularly shaped fabrics. Therefore, this invention achieves radial unilateral yarn feeding for three-dimensional fabrics, improving product consistency and production efficiency. Its novel and rational structural design is highly practical, effective, and easy to promote. Attached Figure Description

[0028] The present invention will be described in detail below with reference to the accompanying drawings and examples. The advantages and implementation methods of the present invention will become more apparent from this description. The accompanying drawings are for illustrative purposes only and do not constitute any limitation on the present invention. In the accompanying drawings:

[0029] Figure 1 This is a schematic diagram of the structure of the present invention.

[0030] Figure 2 This is a schematic diagram of the yarn feeding platform of the present invention.

[0031] Figure 3 This is a schematic diagram of the yarn pushing mechanism of the present invention.

[0032] Figure 4 This is a schematic diagram of the yarn feeding mechanism of the present invention.

[0033] Figure 5 This is a schematic diagram of the yarn clamping mechanism of the present invention.

[0034] Figure 6 This is a yarn supply circuit diagram of the present invention.

[0035] Figure 7 This is a flowchart of the yarn feeding method of the present invention.

[0036] In the picture:

[0037] 1. Yarn feeding platform; 2. Yarn pushing mechanism; 3. Yarn feeding mechanism; 4. Yarn clamping mechanism;

[0038] 101. Yarn pushing cylinder fixing seat; 102. Base plate; 103. Yarn clamping platform; 104. Yarn clamping connecting rod fixing seat; 105. Yarn block;

[0039] 201. Yarn-pushing cylinder; 202. Yarn-pushing plate; 203. Guide rail slider;

[0040] 301. Yarn guide sword; 302. Slider connecting piece; 303. Yarn guide sword fixing plate; 304. Servo motor; 305. Linear module; 306. Fixing block;

[0041] 401. Yarn clamping plate; 402. Yarn clamping rod; 403. Yarn clamping cylinder; 404. Yarn clamping cylinder base;

[0042] 2021, fork-shaped structure. Detailed Implementation

[0043] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0044] like Figures 1 to 7 As shown, the present invention discloses a narrow-slit channel single-sided variable-range yarn feeding device, including a yarn pushing mechanism 2, a yarn feeding mechanism 3, and a yarn clamping mechanism 4. The yarn pushing mechanism 2, the yarn feeding mechanism 3, and the yarn clamping mechanism 4 are all installed on the yarn feeding platform 1. The yarn pushing mechanism 2 and the yarn feeding mechanism 3 are arranged in a 90° position to cooperate with each other. The yarn feeding mechanism 3 and the yarn clamping mechanism 4 are arranged in parallel. The yarn pushing mechanism 2, the yarn feeding mechanism 3, and the yarn clamping mechanism 4 cooperate with each other to realize the single-sided variable-range yarn feeding movement.

[0045] The yarn pushing mechanism 2 includes a yarn pushing plate 202, which is mounted on the guide rail slider 203. The yarn pushing plate 202 is driven by the yarn pushing cylinder 201 to move back and forth on the guide rail. The yarn pushing cylinder 201 and the yarn pushing plate 202 are fixed by a nut. The yarn pushing cylinder 201 pushes the yarn pushing plate 202 to achieve precise control of the yarn position. A ceramic ring is installed on the yarn pushing plate 202 to reduce the friction between the yarn and the yarn pushing plate 202 and prevent yarn wear.

[0046] The yarn guiding mechanism 3 includes a yarn guiding sword 301, which is mounted on a yarn guiding sword fixing plate 303. The yarn guiding sword fixing plate 303 is connected to the linear module 305 through a slider connecting piece 302. The yarn guiding sword 301 is located on one side of the linear module 305. Under the precise control of the servo motor 304, the yarn guiding sword 301 realizes a reciprocating yarn guiding motion with varying stroke.

[0047] The yarn-drawing end of the yarn-drawing sword 301 is slanted in a figure-7 shape.

[0048] The yarn clamping mechanism 4 includes a yarn clamping plate 401, which is connected to a yarn clamping cylinder 403 via a yarn clamping rod 402. The yarn clamping cylinder 403 is mounted on a yarn clamping cylinder seat 404 and is rotatably connected to the yarn clamping cylinder seat 404. The yarn clamping rod 402 is L-shaped and includes a long side and a short side. The yarn clamping plate 401 is mounted on the end of the long side of the yarn clamping rod 402. The end of the short side of the yarn clamping rod 402 is hinged to the output end of the yarn clamping cylinder 403 via a pin. The connecting hole at the hinge of the yarn clamping rod 402 is designed as an elongated hole to enable the yarn clamping cylinder 403 to rotate relative to the yarn clamping cylinder seat 404 while pushing the cylinder arm to extend and retract. The yarn clamping cylinder seat 404 is used to accurately fix the position of the yarn clamping cylinder 403.

[0049] The yarn feeding platform 1 includes a base plate 102, on which a yarn pushing cylinder fixing seat 101 is mounted. The yarn pushing cylinder fixing seat 101 is used to fix and position the yarn pushing mechanism 2. A yarn clamping platform 103 is provided on the base plate 102 at the position corresponding to the yarn feeding end of the yarn feeding sword 301. Under the drive of the yarn clamping cylinder 403, the yarn feeding sword 301 clamps the yarn on the yarn clamping platform 103. The yarn clamping platform 103 is the platform for holding the yarn in the yarn clamping mechanism 4, thereby achieving yarn stability. A yarn clamping rod fixing seat 104 is installed on the base plate 102 on one side of the yarn clamping rod 402. The yarn clamping rod fixing seat 104 is rotatably connected to the yarn clamping rod 402. A rolling bearing is installed in the yarn clamping rod fixing seat 104 to realize the rotation of the yarn clamping action. A yarn block 105 is installed on the base plate 102 on one side of the yarn guiding mechanism 3. A ceramic ring is installed in the yarn block 105. The yarn block 105 guides the yarn from the outside into the yarn guiding device, so that the yarn has a reasonable yarn path.

[0050] The end of the yarn pusher 202 is designed as a fork-shaped structure 2021 with a gap in the middle. When the yarn pusher 202 is pushed out to the yarn clamping mechanism 4, the yarn clamping platform 103 enters the gap. At this time, the yarn clamping plate 401 and the yarn clamping platform 103 clamp the yarn in the gap.

[0051] The fork-shaped structure 2021 has a support frame for installing ceramic rings located on one side of the gap.

[0052] The yarn feeding mechanism 3 also includes a fixing block 306. The linear module 305 is mounted on the base plate 102 through the fixing block 306. The mounting holes on the fixing block 306 correspond one-to-one with the mounting holes on the base plate 102. The fixing block 306 enables the linear module 305 to be precisely mounted on the yarn feeding platform 1.

[0053] The base plate 102 is used to support all the mechanisms covered by the present invention. The holes in the base plate 102 are precisely positioned, and the base plate 102 is connected to the fixing device to enable the entire yarn guiding device to perform yarn guiding movement.

[0054] like Figure 6As shown in the figure, the yarn path is the process of the yarn being pushed out by the yarn guide sword 301. The yarn first passes through the yarn block 105 along the linear module 305 to reach the yarn pushing mechanism 2. Then the yarn passes through the ceramic ring on the yarn pushing plate 202 in the yarn pushing mechanism 2 and is pushed out by the yarn guide sword 301. Finally, the yarn passes through the yarn clamping platform 103 and is clamped by the yarn clamping mechanism 4.

[0055] like Figure 7 As shown, the present invention also provides a method for single-sided variable stroke yarn feeding in a narrow slit channel, comprising the following steps:

[0056] S1: When the yarn guide sword 301 is in the initial non-extended position, the yarn pusher cylinder 201 in the yarn pusher mechanism 2 contracts and drives the yarn pusher plate 202 to the initial non-extended position. The yarn is introduced from the ceramic ring of the yarn block 105 and forms a straight line with the yarn pusher plate 202. At this time, the yarn clamping cylinder 403 in the yarn clamping mechanism 4 pushes the yarn clamping plate 401 at the end of the yarn clamping rod 402 to clamp the lead yarn generated in the previous cycle.

[0057] S2: The yarn guide sword 301, under the precise drive of the servo motor 304, pushes out the yarn with a predetermined stroke. Since the yarn guide is clamped by the yarn clamping mechanism 4, the required yarn is pulled out from the bobbin by the yarn guide sword 301.

[0058] S3: After the yarn is drawn in, the yarn drawing sword 301 retracts to the initial non-extended position, and the yarn clamping mechanism 4 and the yarn pushing mechanism 2 remain stationary. At this time, the yarn is retained in the fabric due to the friction with the fabric.

[0059] S4: The yarn clamping plate 401 releases the yarn under the contraction of the yarn clamping cylinder 403. The fabric rotates or the yarn guiding platform 1 translates so that the yarn guiding sword 301 aligns with the next yarn guiding position. The yarn pushing cylinder 201 pushes the yarn pushing plate 202 with the relative movement of the fabric to push the generated yarn to the yarn clamping platform 103.

[0060] S5: In the yarn clamping mechanism 4, the yarn clamping cylinder 403 pushes the yarn clamping plate 401 at the end of the yarn clamping rod 402 to clamp the yarn on the yarn clamping platform 103. After clamping the yarn, the yarn pushing cylinder 201 in the yarn pushing mechanism 2 drives the yarn pushing plate 202 to retract to the initial non-extended position, and the yarn guiding sword 301 also retracts to the initial non-extended position, thus completing the yarn guiding movement in one cycle.

[0061] By repeating the above steps, continuous yarn feeding can be achieved.

[0062] This invention enables fixed or movable yarn feeding on one side of the fabric, and can also achieve variable-length yarn feeding according to actual production needs. This invention greatly improves the production efficiency of large-size, variable-curvature fabrics and enhances the automation of automatic weaving machines.

[0063] The embodiments of the present invention have been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of this patent.

Claims

1. A narrow-slit channel single-sided variable-stroke yarn feeding device, characterized in that: The system includes a yarn pushing mechanism, a yarn guiding mechanism, and a yarn clamping mechanism, all mounted on a yarn guiding platform. The yarn pushing mechanism is positioned at a 90° angle to the yarn guiding mechanism, and the yarn guiding and clamping mechanisms are arranged parallel to each other. The yarn pushing mechanism includes a yarn pushing plate mounted on a guide rail slider, which reciprocates on the guide rail via a yarn pushing cylinder. The yarn guiding mechanism includes a yarn guiding sword mounted on a yarn guiding sword fixing plate, which is connected to a linear module via a slider connecting piece. The yarn guiding sword is located on one side of the linear module. The yarn clamping mechanism includes a yarn clamping plate connected to a yarn clamping cylinder via a yarn clamping rod, which is mounted on a yarn clamping cylinder seat and rotatably connected to the yarn clamping cylinder seat. The yarn guiding platform includes a base plate on which a yarn pushing cylinder fixing seat is mounted. A yarn clamping platform is positioned on the base plate corresponding to the yarn guiding end of the yarn guiding sword. Driven by a yarn-clamping cylinder, the yarn-feeding sword clamps the yarn onto a yarn-clamping platform. A yarn-clamping connecting rod fixing seat is mounted on the base plate on one side of the yarn-clamping rod, and this fixing seat is rotatably connected to the yarn-clamping rod. A rolling bearing is installed in the fixing seat. A yarn block is mounted on the base plate on one side of the yarn-feeding mechanism, and a ceramic ring is installed in the yarn block. The yarn-clamping rod is L-shaped, including a long side and a short side. The yarn-clamping plate is mounted at the end of the long side of the yarn-clamping rod. The short end of the rod is hinged to the output end of the yarn clamping cylinder by a pin, and the connecting hole at the hinge of the yarn clamping rod is an oblong hole; the yarn guiding end of the yarn guiding sword is inclined in the shape of a figure 7; the end of the yarn pushing plate is a fork-shaped structure with a gap in the middle. When the yarn pushing plate is pushed out to the yarn clamping mechanism, the yarn clamping platform enters the gap, and the yarn clamping plate and the yarn clamping platform clamp the yarn in the gap; a stand for installing a ceramic ring is provided on one side of the gap on the fork-shaped structure.

2. The narrow slit channel single-sided variable stroke yarn feeding device according to claim 1, characterized in that: The yarn feeding mechanism also includes a fixing block, and the linear module is mounted on the base plate through the fixing block. The mounting holes on the fixing block correspond one-to-one with the mounting holes on the base plate.

3. A method for single-sided variable-stroke yarn feeding in a narrow-slit channel, implemented based on the single-sided variable-stroke yarn feeding device in a narrow-slit channel as described in claim 1 or 2, characterized in that: Includes the following steps: S1: When the yarn guide sword is in the initial non-extended position, and the yarn pusher cylinder in the yarn pusher mechanism contracts to drive the yarn pusher plate to the initial non-extended position, the yarn is introduced from the ceramic ring of the yarn block and forms a straight line with the yarn pusher plate. The yarn clamping cylinder in the yarn clamping mechanism pushes the yarn clamping plate at the end of the yarn clamping rod to clamp the yarn guide. S2: The yarn guide sword pushes out the yarn with a predetermined stroke under the precise drive of the servo motor. Since the yarn guide is clamped by the yarn clamping mechanism, the required yarn is pulled out from the yarn spool by the yarn guide sword. S3: After the yarn is drawn in, the yarn drawing sword retracts to the initial non-extended position, the yarn clamping mechanism and the yarn pushing mechanism remain stationary, and the yarn remains in the fabric; S4: The yarn clamping plate releases the yarn under the action of the yarn clamping cylinder contraction. The fabric rotates or the yarn guiding platform moves to align the yarn guiding sword with the next yarn guiding position. The yarn pushing cylinder pushes the yarn pushing plate to push the generated yarn to the yarn clamping platform. S5: In the yarn clamping mechanism, the yarn clamping cylinder pushes the yarn clamping plate at the end of the yarn clamping rod to clamp the yarn on the yarn clamping platform. After clamping the yarn, the yarn pushing cylinder in the yarn pushing mechanism drives the yarn pushing plate to retract to the initial non-extended position, and the yarn guiding sword also retracts to the initial non-extended position, completing one cycle of yarn guiding movement.

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