Automatic cutting device and method for complex profile three-dimensional fabric surface yarn

Abstract

The application discloses a kind of complex profile three-dimensional fabric surface pile yarn automatic cutting device and method, the device includes rack, pile yarn cutting component, pile yarn cutting drive mechanism and fabric rotation component, the fabric rotation component is used to place three-dimensional fabric, and drive three-dimensional fabric rotation, the pile yarn cutting drive mechanism is installed on rack, drive pile yarn cutting component movement, by the multi-degree-of-freedom motion of the pile yarn cutting component and the rotation motion of the fabric rotation component, the pile yarn cutting component is continuously cut to the complex profile three-dimensional fabric surface pile yarn on fabric rotation component.The application realizes the automatic carding, automatic profiling cutting and automatic recycling of the pile yarn that is in disorder and soft and collapses and is attached to the surface of complex profile three-dimensional fabric by the coordinated motion of the pile yarn cutting component and the fabric rotation component, guarantees high quality, high efficiency and low cost cutting.

Description

Technical Field

[0001] This invention belongs to the field of textile machinery technology, specifically relating to an automatic cutting device and method for surface pile yarn of complex three-dimensional fabrics. Background Technology

[0002] A complex three-dimensional fabric is integrally woven. Normal yarns are introduced row by row along the thickness direction of the fabric, and after interlacing, pile yarns are formed on the fabric surface. According to the requirements of the composite process, the pile yarns on the fabric surface need to be removed.

[0003] Currently, the demand for complex-shaped three-dimensional fabrics is surging, and the surface pile yarn is mainly cut manually. The cutting process requires manual straightening of the fabric surface pile yarn while simultaneously using scissors or other tools to cut it. Due to the high abrasion resistance of the yarn, the cutting action is laborious, difficult, and inefficient.

[0004] In the prior art, a Chinese patent application with patent number 201921018040.3 discloses the following technical solution: This utility model provides a wool shearing device, including a box. Two first linear motors are welded to both sides of one end of the upper surface of the box, and the two first linear motors are parallel to each other. A fixing post is vertically welded to the slider of each of the first linear motors. An electric wool shear is suspended on one side of each fixing post. A second linear motor is vertically welded to the side of each of the two fixing posts that are close to each other. A second electric telescopic rod is horizontally welded to the slider of each of the second linear motors. An arc-shaped first clamp is fixed to the end of the second electric telescopic rod away from the second linear motor. This utility model can fix sheep to the box using the first and second clamps, facilitating wool shearing by farmers. Furthermore, the sheared wool is collected in a wool collection chamber under the action of a powerful suction fan, avoiding environmental pollution and facilitating wool collection by farmers. However, the device used in this patent focuses on fixing the sheep in place, and the cutting is still done manually. It cannot adapt to the complex shape of the object being cut, resulting in laborious, difficult, and inefficient cutting. Furthermore, the device cannot meet the requirements for the uniformity and precision of the remaining yarn length on the surface of the three-dimensional fabric after cutting. Therefore, the device in this patent is not suitable for cutting the pile yarn on the surface of complex-shaped three-dimensional fabrics. To solve this problem, this invention proposes an automatic cutting method and device for the pile yarn on the surface of complex-shaped three-dimensional fabrics. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic cutting device and method for pile yarn on the surface of complex three-dimensional fabrics, which can automatically cut and contour-following cut the messy and disordered pile yarn that is soft and attached to the surface of complex three-dimensional fabrics. At the same time, it can automatically straighten, align, comb the discrete pile yarn, and automatically recycle the cut pile yarn, so as to ensure cutting efficiency and cutting quality.

[0006] The technical solution to achieve the purpose of this invention is as follows: an automatic cutting device for the surface pile yarn of complex three-dimensional fabrics, including a frame, a pile yarn cutting drive mechanism, a pile yarn cutting component, and a fabric rotating component. The fabric rotating component is installed on one side of the frame for placing the three-dimensional fabric and driving the three-dimensional fabric to rotate. The pile yarn cutting drive mechanism is installed on the frame and drives the pile yarn cutting component to move. Through the multi-degree-of-freedom movement of the pile yarn cutting component and the rotational movement of the fabric rotating component, continuous cutting of the surface pile yarn of complex three-dimensional fabrics is performed.

[0007] Furthermore, the yarn cutting component includes a yarn cutting mechanism and a yarn combing mechanism. The yarn cutting mechanism is floatingly mounted on the yarn cutting drive mechanism and moves by being driven by the yarn cutting drive mechanism. The yarn combing mechanism is used for automatic straightening, aligning, combing and recycling of the yarn.

[0008] Furthermore, the yarn cutting drive mechanism is not limited to multi-degree-of-freedom modules, robots, transmission drive mechanisms, etc. The transmission drive mechanism is not limited to ball screws, gear racks, etc. The drive form is not limited to servo motors, etc. By adjusting the movement of the yarn cutting drive mechanism, the yarn cutting mechanism can be adapted to the surface of complex three-dimensional fabrics.

[0009] Furthermore, the yarn cutting mechanism comprises a cutting execution mechanism and a contour cutting mechanism. The cutting execution mechanism is connected to the contour cutting mechanism via a pin and rotates around it, thereby enabling the cutting execution mechanism to adapt to the irregular contour surface of the fabric.

[0010] Furthermore, the cutting execution mechanism consists of a fixed end mounting base, a cutting end mounting base, and a cutting actuator. The cutting end mounting base has an arc-shaped elongated hole, and the fixed end mounting base and the cutting end mounting base are connected by a screw. By adjusting the tightening position of the screw in the arc-shaped elongated hole, the tilting and swinging angle of the cutting actuator can be adjusted to control the reserved length after the surface yarn is cut.

[0011] Furthermore, the contour cutting mechanism consists of a mounting plate, a spring, a support plate, a contour cutting plate, and a tension spring. The spring is horizontally connected at one end to the mounting plate and at the other end to the support plate. The mounting plate is mounted on the yarn cutting drive mechanism. The deformation of the spring enables the cutting actuator to adaptively adjust to the complex surface of the three-dimensional fabric, achieving radial contour cutting of the yarn on the surface of the complex-shaped three-dimensional fabric. The tension spring is vertically connected to both the support plate and the contour cutting plate. Under the tension of the tension spring, the cutting actuator always remains in contact with the surface of the three-dimensional fabric, achieving axial contour cutting of the yarn on the surface of the complex-shaped three-dimensional fabric.

[0012] Furthermore, the yarn combing mechanism is placed on the frame and consists of a negative pressure adsorption mechanism and a combing roller. The negative pressure adsorption force generated by the negative pressure adsorption mechanism and the combing roller realize the automatic straightening, alignment, combing and recycling of the disordered and soft discrete yarns that are attached to the fabric surface.

[0013] A method for automatically cutting the pile yarn on the surface of complex three-dimensional fabrics includes the following steps:

[0014] First, install the three-dimensional fabric at the center of the fabric rotating component. According to the required length after the surface yarn is cut, adjust the tightening position of the screw in the arc-shaped long hole on the cutting end mounting seat, and adjust the swing angle of the cutting actuator through the pin to make the cutting actuator contact the surface of the three-dimensional fabric.

[0015] Driven by the yarn cutting drive mechanism, the yarn cutting mechanism moves to the initial cutting position, and the cutting actuator, yarn combing mechanism and fabric rotating component start running at the same time to begin the combing, cutting and recycling of the yarn.

[0016] While the fabric rotating component rotates, the yarn cutting mechanism performs yarn cutting under the drive of the yarn cutting drive mechanism. During the cutting process, when the radial dimension of the three-dimensional fabric changes, the cutting actuator moves forward or backward under the action of the spring, so that the cutting actuator is always in contact with the surface of the three-dimensional fabric. When the slope of the three-dimensional fabric changes, the cutting actuator maintains contact with the surface of the three-dimensional fabric under the action of the tension spring.

[0017] After the surface pile yarn of the three-dimensional fabric is cut, the cutting actuator, the pile combing mechanism and the fabric rotating component stop operating simultaneously, and the pile cutting mechanism returns to the designated position under the drive of the pile cutting drive mechanism.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] (1) The device of the present invention is designed based on the shape characteristics of complex three-dimensional fabrics and the structural characteristics of surface pile yarns. It is designed for the pile yarns that are messy, flexible and soft and attached to the surface of three-dimensional fabrics, and realizes automatic combing, automatic shape-following cutting and automatic recycling of pile yarns, so as to ensure high quality and high efficiency cutting.

[0020] (2) By adjusting the screw tightening position in the arc-shaped long hole, the tilting swing angle of the cutting actuator is adjusted to control the reserved length of the pile yarn on the surface of the three-dimensional fabric after cutting.

[0021] (3) The deformation of the spring enables the cutting actuator to adaptively adjust the complex surface of the three-dimensional fabric, thereby realizing the radial contour cutting of the pile yarn on the surface of the complex three-dimensional fabric.

[0022] (4) Under the action of the tension spring, the cutting actuator always remains in contact with the surface of the three-dimensional fabric, so as to realize the axial contour cutting of the pile yarn on the surface of the complex three-dimensional fabric.

[0023] (5) Through the negative pressure adsorption force generated by the negative pressure adsorption mechanism and the combing roller, the random, disordered, soft and attached discrete yarns on the fabric surface are automatically straightened, aligned, combed and recycled. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the automatic cutting device in an embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram of the yarn cutting mechanism in an embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram illustrating the radial contour cutting principle in an embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram of the axial contour cutting principle in an embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram illustrating the yarn combing principle in an embodiment of the present invention. Detailed Implementation

[0029] The following is a detailed description of a preferred embodiment of the present invention.

[0030] like Figure 1 As shown, this embodiment is an automatic cutting device for the surface pile yarn of a complex three-dimensional fabric. It consists of a frame 1, a pile yarn cutting component 2, a pile yarn cutting drive mechanism 21, and a fabric rotating component 3. The pile yarn cutting drive mechanism 21 is installed on the left side of the frame 1, driving the pile yarn cutting component 2 to move. The fabric rotating component 3 is installed on the right side of the frame 1, realizing high-precision and constant-speed or variable-speed rotation of the three-dimensional fabric 4. The pile yarn cutting drive mechanism 21 enables the pile yarn cutting component 2 to perform multiple free movements such as feeding, swinging, and rotating. The coordinated movement of the pile yarn cutting component 2 and the fabric rotating component 3 realizes automatic cutting and contour cutting of the surface pile yarn 5 of the three-dimensional fabric, while also realizing automatic combing of the pile yarn 5 during cutting and automatic recycling of the pile yarn 5 after cutting.

[0031] like Figure 1As shown, in this embodiment, the yarn cutting component 2 consists of a yarn cutting mechanism 22 and a yarn cutting and combing mechanism 23. The yarn cutting mechanism 22 is mounted on the yarn cutting drive mechanism 21, which uses, but is not limited to, a ball screw module to drive the yarn cutting mechanism 22 to perform two degrees of freedom in the vertical and horizontal directions. The yarn cutting and combing mechanism 23 is placed at the front left of the frame 1 to realize the combing and recycling of the yarn 5 during the cutting process.

[0032] like Figure 2 As shown, in this embodiment, the yarn cutting mechanism 22 consists of a cutting execution mechanism 221 and a contour cutting mechanism 222. The cutting execution mechanism 221 is mounted on the horizontal ball screw module of the yarn cutting drive mechanism 21, and the contour cutting mechanism 222 is mounted in front of the cutting execution mechanism 221. They are connected by a hinge through a pin to achieve the function of rotating around it.

[0033] like Figure 2 As shown, in this embodiment, the cutting actuator 221 consists of a fixed end mounting base 2211, a cutting end mounting base 2212, and a cutting actuator 2213. One side of the fixed end mounting base 2211 is connected to the cutting end mounting base 2212 via a screw, and the other side is hinged to the contour cutting plate 2224 via a pin. The cutting end mounting base 2212 has an arc-shaped elongated hole. By adjusting the tightening position of the screw in the arc-shaped elongated hole, the tilting and swinging angle of the cutting actuator 2213 can be adjusted, thereby controlling the reserved length of the pile yarn on the surface of the three-dimensional fabric after cutting.

[0034] like Figure 2 As shown, in this embodiment, the contour cutting mechanism 222 consists of a mounting plate 2221, a spring 2222, a support plate 2223, a contour cutting plate 2224, and a tension spring 2225. Figure 3 As shown, the spring 2222 is horizontally mounted between the mounting plate 2221 and the support plate 2223. The mounting plate 2221 is mounted on the yarn cutting drive mechanism 21. The yarn cutting drive mechanism 21 drives the yarn cutting mechanism 22 to move horizontally. When it encounters the fabric 4, it exerts pressure on the spring 2222. The deformation of the spring 2222 enables the cutting actuator 2213 to adaptively adjust the irregular contour surface of the fabric 4. The support plate 2223 is hinged to the contour cutting plate 2224 and connected by a vertical tension spring 2225. Figure 4 As shown, under the tension of the tension spring 2225, the cutting actuator 2213 remains in contact with the three-dimensional fabric 4, realizing the contour cutting of the pile yarn 5 on the surface of the complex-shaped three-dimensional fabric 4. Specifically, the support plate 2223 provided in this embodiment is L-shaped, and one side of the contour cutting plate 2224 is hinged to the side of the support plate 2223. The end face of the contour cutting plate 2224 is connected to the bottom surface of the support plate 2223 through the tension spring 2225.

[0035] like Figure 1 , 5 As shown, in this embodiment, the yarn combing mechanism 23 is placed on the frame 1. The yarn combing mechanism 23 includes a negative pressure adsorption mechanism (231) and a combing roller (232). Through the negative pressure adsorption force generated by the negative pressure adsorption mechanism 231 and the combing roller 232, the loose, disordered, and discrete yarns attached to the fabric surface are automatically straightened, aligned, combed, and recycled.

[0036] One cutting method in this embodiment is as follows: After the three-dimensional fabric is woven and formed, it is installed at the center of the fabric rotating component 3. Based on the required length of the surface yarn 5 of the three-dimensional fabric to be cut, the tightening position of the screw in the arc-shaped hole on the cutting end mounting seat 2212 is adjusted, and the swing angle of the cutting actuator 2213 is adjusted by the pin to determine the appropriate contact position and angle between the cutting actuator 2213 and the three-dimensional fabric. Once the above preparations are complete, the automatic cutting device for the surface yarn of the three-dimensional fabric is started. Driven by the yarn cutting drive mechanism 21, the yarn cutting mechanism 22 moves from the system origin to the initial cutting position. The cutting actuator 2213, the yarn combing mechanism 23, and the fabric rotating component 3 start operating simultaneously, initiating the combing, cutting, and recycling of the yarn.

[0037] While the fabric rotating component 3 rotates, the yarn cutting mechanism 22, driven by the yarn cutting drive mechanism 21, performs yarn cutting in a spiral trajectory. During the cutting process, when the radial dimension of the three-dimensional fabric changes, the cutting actuator 2213 moves forward or backward under the action of the spring 2222, ensuring that the cutting actuator 2213 is always in contact with the surface of the three-dimensional fabric. When the slope of the three-dimensional fabric changes, due to the change in tilt angle, the cutting actuator 2213 is rotated by a certain angle under the external force of the three-dimensional fabric, and at the same time, under the tension of the tension spring 2225, the cutting actuator 2213 maintains contact with the surface of the three-dimensional fabric.

[0038] After the surface pile yarn of the three-dimensional fabric is cut, the cutting actuator 2213, the pile yarn combing mechanism 23 and the fabric rotating component 3 stop running at the same time, and the pile yarn cutting mechanism 22 returns to the system origin under the drive of the pile yarn cutting drive mechanism 21.

[0039] The drive and transmission mechanisms in this example employ, but are not limited to, motors, ball screw modules, slewing bearings, guide rods, etc.

[0040] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0041] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if these modifications and variations to the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include these modifications and variations.

Claims

1. An automatic cutting device for surface pile yarn of complex three-dimensional fabrics, characterized in that, The device includes a frame (1), a yarn cutting component (2), a yarn cutting drive mechanism (21), and a fabric rotating component (3). The fabric rotating component (3) is used to place the three-dimensional fabric and drive the three-dimensional fabric to rotate. The yarn cutting drive mechanism (21) is installed on the frame (1) and drives the yarn cutting component (2) to move. Through the movement of the yarn cutting component (2) and the rotation of the fabric rotating component (3), the yarn cutting component (2) continuously cuts the yarn on the surface of the complex three-dimensional fabric on the fabric rotating component (3). The yarn cutting component (2) includes a yarn cutting mechanism (22) and a yarn combing mechanism (23). The yarn cutting mechanism (22) is floatingly mounted on the yarn cutting drive mechanism (21) and moves by the drive of the yarn cutting drive mechanism (21). The yarn combing mechanism (23) is used for automatic straightening, aligning, combing and recycling of the yarn. The yarn cutting mechanism (22) consists of a cutting execution mechanism (221) and a contour cutting mechanism (222). The cutting execution mechanism (221) is connected to the contour cutting mechanism (222) by a pin and rotates around it. The contour cutting mechanism (222) enables the cutting execution mechanism (221) to adapt to the irregular contour surface of the fabric. The cutting actuator (221) includes a fixed end mounting base (2211), a cutting end mounting base (2212), and a cutting actuator (2213). The cutting end mounting base (2212) has an arc-shaped elongated hole. The fixed end mounting base (2211) and the cutting end mounting base (2212) are connected by a screw. The tilting and swinging angle of the cutting actuator (2213) can be adjusted by adjusting the tightening position of the screw in the arc-shaped elongated hole. The contour cutting mechanism (222) consists of a mounting plate (2221), a spring (2222), a support plate (2223), a contour cutting plate (2224), and a tension spring (2225). The spring (2222) is horizontally connected at one end to the mounting plate (2221) and at the other end to the support plate (2223). The mounting plate (2221) is mounted on the yarn cutting drive mechanism (21). The deformation of the spring (2222) enables the cutting actuator (2213) to adaptively adjust to the complex shape of the three-dimensional fabric. The tension spring (2225) is vertically connected to the support plate (2223) and the contour cutting plate (2224). Under the tension of the tension spring (2225), the cutting actuator (2213) always maintains contact with the surface of the three-dimensional fabric.

2. The automatic cutting device for surface pile yarn of complex three-dimensional fabric according to claim 1, characterized in that, The yarn cutting drive mechanism (21) is a multi-degree-of-freedom module, robot or gear rack mechanism; by adjusting the movement of the yarn cutting drive mechanism (21), the yarn cutting mechanism (22) can be adapted to the complex three-dimensional fabric.

3. The automatic cutting device for surface pile yarn of complex three-dimensional fabric according to claim 2, characterized in that, The driving form of the yarn cutting drive mechanism (21) is a servo motor or a stepper motor.

4. The automatic cutting device for surface pile yarn of complex three-dimensional fabric according to claim 1, characterized in that, The support plate (2223) is L-shaped. One side of the contour cutting plate (2224) is hinged to the side of the support plate (2223). The end face of the contour cutting plate (2224) is connected to the bottom surface of the support plate (2223) through the tension spring (2225).

5. An automatic cutting device for surface pile yarn of complex-shaped three-dimensional fabrics according to any one of claims 1-4, characterized in that, The yarn combing mechanism (23) includes a negative pressure adsorption mechanism (231) and a combing roller (232). The negative pressure adsorption force generated by the negative pressure adsorption mechanism (231) and the combing roller (232) are used to automatically straighten, align, comb and recycle the discrete yarn.

6. A method for automatically cutting surface yarns of complex-shaped three-dimensional fabrics using the automatic cutting device for surface yarns of complex-shaped three-dimensional fabrics as described in claim 1, characterized in that, Including the following steps: First, install the three-dimensional fabric at the center of the fabric rotating component. According to the required length after the surface yarn is cut, adjust the tightening position of the screw in the arc-shaped long hole on the cutting end mounting seat, and adjust the swing angle of the cutting actuator through the pin to make the cutting actuator contact the surface of the three-dimensional fabric. Driven by the yarn cutting drive mechanism, the yarn cutting mechanism moves to the initial cutting position, and the cutting actuator, yarn combing mechanism and fabric rotating component start running at the same time to begin the combing, cutting and recycling of the yarn. While the fabric rotating component rotates, the yarn cutting mechanism performs yarn cutting under the drive of the yarn cutting drive mechanism; During the cutting process, when the radial dimension of the three-dimensional fabric changes, the cutting actuator moves forward or backward under the action of the spring, so that the cutting actuator is always in contact with the surface of the three-dimensional fabric; when the slope of the three-dimensional fabric changes, the cutting actuator maintains contact with the surface of the three-dimensional fabric under the action of the tension spring. After the surface pile yarn of the three-dimensional fabric is cut, the cutting actuator, the pile combing mechanism and the fabric rotating component stop operating simultaneously, and the pile cutting mechanism returns to the designated position under the drive of the pile cutting drive mechanism.

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