Knotted yarn cutting mechanism of warp knitting machine

Abstract

The utility model discloses a knotted yarn cutting mechanism of a warp knitting machine, which belongs to the technical field of warp knitting machines and comprises a working table, a groove is arranged at the top of the working table, a conveying belt is arranged in the groove, a cutting mechanism is arranged above the conveying belt, a mounting groove is arranged at the top of the working table, and a driving component is arranged in the mounting groove. The cutting mechanism is driven by the driving assembly to slide in the mounting groove, the cutting mechanism comprises a mounting box, a cutting knife is connected into the mounting box through a connecting assembly, the connecting assembly enables the cutting knife to move in the up-down direction and the front-back direction, and a power assembly is arranged between the mounting box and the cutting knife. The yarn cutting device has the beneficial effects that the cutting knife is connected into the mounting box through the connecting assembly, the cutting knife can move in the up-down direction and the front-back direction through the connecting assembly, the power assembly is arranged between the mounting box and the cutting knife, the cutting knife can generate displacement in the front-back direction after abutting against the yarn through the power assembly, the yarn can be cut conveniently, and the cutting efficiency is improved. The working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of warp knitting machines, in particular to a yarn knotting and cutting mechanism of a warp knitting machine. Background Art

[0002] The warp knitting machine is mainly composed of a weaving mechanism, a bar slidable mechanism, a warp feed mechanism, a drawing and winding mechanism, and a transmission mechanism. One or several groups of parallel yarns are fed into all the working needles of the machine in the warp direction to form loops at the same time to form a knitted fabric. This method is called warp knitting, the fabric is called warp knitted fabric, and the machine that completes this warp knitting is called a warp knitting machine. During the weaving process of the warp knitting machine, due to certain reasons (such as uneven yarn tension, yarn quality problems, improper machine adjustment, etc.), the yarn may form knots or become entangled at one or more points. This phenomenon is called yarn knotting. These yarn knots not only affect the appearance and texture of the fabric, but also reduce the strength of the fabric. Therefore, inspectors are generally set up on the yarn laying platform to allow personnel to determine the position of cutting.

[0003] After searching, the Chinese patent announcement number CN221071823U is disclosed, which discloses a yarn knotting and cutting mechanism of a warp knitting machine. By using an infinite transmission camera to monitor the woven fabric on the conveyor belt device, personnel can monitor the yarn knotting situation outside the working area, which can facilitate personnel to remotely view and control the cutting. The speed regulating motor on the moving mechanism can drive the rotating rod and the gear to rotate and move horizontally repeatedly on the rack. The slide rail and the slider can make the support rod and the top plate move horizontally repeatedly, so that the electric telescopic rod can push the buffer plate and the spring and the cutting knife body to cut the area where the yarn knot occurs, which saves personnel time and energy to a certain extent, and the personnel's activity area is not restricted, which brings a lot of convenience to the personnel's work.

[0004] The cutting knife in the above patent moves directly from top to bottom to cut the knotted yarn area. Some yarns in the knotted yarn area may not be cut completely and need to be cut again, which affects work efficiency. Utility Model Content

[0005] The purpose of the present utility model is to provide a yarn-knitting and cutting mechanism for a warp knitting machine in order to solve the above-mentioned problem.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0007] A yarn knotting and cutting mechanism of a warp knitting machine includes a workbench, a groove is provided on the top of the workbench, a conveyor belt is arranged in the groove, a cutting mechanism is arranged above the conveyor belt, a mounting groove is provided on the top of the workbench, a driving assembly is arranged in the mounting groove, the cutting mechanism is driven to slide in the mounting groove by the driving assembly, the cutting mechanism includes a mounting box, a cutting knife is connected to the mounting box through a connecting assembly, the bottom of the mounting box is open, the connecting assembly enables the cutting knife to move in the up and down directions and front and back directions, a power assembly is provided between the mounting box and the cutting knife, and the power assembly enables the cutting knife to be displaced in the front and back directions after contacting the yarn, thereby facilitating cutting of the yarn.

[0008] Preferably, the connecting assembly includes two mounting bars, which slide up and down on the inner wall of the mounting box. A first spring is connected between the mounting bar and the inner top wall of the mounting box. A sliding groove is provided on the side where the two mounting bars are close to each other. The cutting knife slides back and forth in the sliding groove. A second spring is connected between the cutting knife and the sliding groove.

[0009] Preferably, the power assembly includes several upper wedge blocks arranged at equal intervals, the upper wedge blocks are fixedly connected to the inner top wall of the installation box, and the top of the cutting knife is fixedly connected to several lower wedge blocks arranged at equal intervals, and the wedge surfaces of the upper wedge blocks and the lower wedge blocks abut each other.

[0010] Preferably, the cutting mechanism further comprises a mounting frame, to which a hydraulic cylinder is fixedly connected, and a mounting box is fixedly connected to the bottom of the hydraulic cylinder.

[0011] Preferably, the driving assembly includes a linear motor, which is fixedly connected to a mounting slot provided on the top of the workbench, and an output end of the linear motor is fixedly connected to the mounting frame.

[0012] Preferably, the mounting bracket is U-shaped with the opening facing downward.

[0013] The beneficial effect is that a cutting knife is connected to the installation box through a connecting component, and the cutting knife can move in the up and down directions and the front and back directions through the connecting component. A power component is provided between the installation box and the cutting knife, and the power component enables the cutting knife to be displaced in the front and back directions after it contacts the yarn, thereby facilitating the cutting of the yarn and improving work efficiency.

[0014] Additional technical features and advantages of the present invention will be more clearly explained in the following description, or can be understood through specific practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of a yarn-knitting and cutting mechanism of a warp knitting machine according to the present invention;

[0017] Figure 2 This is a front view of a yarn-knitting and cutting mechanism of a warp knitting machine according to the present invention;

[0018] Figure 3 This is a top view of a yarn-knitting and cutting mechanism of a warp knitting machine according to the present invention;

[0019] Figure 4 This is a front view of the internal structure of the installation box of the yarn knotting and cutting mechanism of the warp knitting machine described in the utility model;

[0020] Figure 5 It is a right view of the internal structure of the installation box of the yarn knotting and cutting mechanism of the warp knitting machine described in the utility model.

[0021] The description of the accompanying drawings is as follows: 1. Workbench; 2. Conveyor belt; 301. Mounting frame; 302. Hydraulic cylinder; 303. Mounting box; 304. Cutting knife; 401. Mounting bar; 402. First spring; 403. Second spring; 501. Upper wedge block; 502. Lower wedge block; 6. Linear motor. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0024] The present invention will be further described below with reference to the accompanying drawings:

[0025] like Figure 1-Figure 5 As shown, a yarn cutting mechanism of a warp knitting machine includes a workbench 1, a mounting slot is provided on the top of the workbench 1, a groove is provided on the top of the workbench 1, a conveyor belt 2 is provided in the groove, a cutting mechanism is provided above the conveyor belt 2, and the cutting mechanism includes a mounting frame 301, the mounting frame 301 is U-shaped with an opening facing downward, a hydraulic cylinder 302 is fixedly connected to the mounting frame 301, and a mounting box 303 is fixedly connected to the bottom of the hydraulic cylinder 302, and the bottom of the mounting box 303 is open.

[0026] A driving assembly is provided in the mounting groove opened on the top of the workbench 1, and the cutting mechanism is driven to slide in the mounting groove by the driving assembly. The driving assembly includes a linear motor 6, and the linear motor 6 is fixedly connected to the mounting groove opened on the top of the workbench 1. The output end of the linear motor 6 is fixedly connected to the mounting bracket 301. The mounting bracket 301 is driven to move by the linear motor 6 to cut the area where the yarn is knotted.

[0027] The installation box 303 is connected to a cutting knife 304 through a connecting assembly, and the bottom end of the cutting knife 304 extends out of the installation box 303. Therefore, when the installation box 303 moves downward, the cutting knife 304 first abuts against the yarn. The connecting assembly enables the cutting knife 304 to move in the up and down directions and the front and back directions. The connecting assembly includes two installation bars 401, which slide up and down on the inner wall of the installation box 303. A first spring 402 is connected between the installation bar 401 and the inner top wall of the installation box 303. A slide groove is provided on the side where the two installation bars 401 are close to each other. The cutting knife 304 slides back and forth in the slide groove, and a second spring 403 is connected between the cutting knife 304 and the slide groove.

[0028] The upper wedge block 501 is fixedly connected to the inner top wall of the installation box 303, and the top of the cutting knife 304 is fixedly connected to the lower wedge block 502 of the cutting knife 304. The wedge surface of the upper wedge block 501 and the lower wedge block 502 abut against each other. When the installation box 303 moves downward, the upper wedge block 501 moves downward, and the lower wedge block 502 drives the cutting knife 304 to move backward along the installation bar 401, which is convenient for cutting the yarn. After the cutting is completed, the installation box 303 is raised to a suitable height by controlling the hydraulic cylinder 302, and the cutting knife 304 moves forward and resets under the action of the elastic force of the second spring 403.

[0029] Working principle: When workers see the yarn knot, they first use the conveyor belt 2 to transport the yarn knot to the area near the cutting knife 304. The conveyor belt 2 stops conveying and the linear motor 6 drives the mounting frame 301 to move, and the cutting knife 304 is moved to the side of the yarn knot position, and the cutting knife 304 is kept at a suitable distance from the yarn knot position. Then, the hydraulic cylinder 302 is controlled to make the mounting box 303 drive the cutting knife 304 to move downward. The cutting knife 304 first contacts the yarn. After the cutting knife 304 contacts the yarn, the mounting box 303 starts to move downward along the mounting strip 401, and the first spring 402 is compressed. When 303 moves downward, it will drive the upper wedge block 501 to move downward. During the downward movement of the upper wedge block 501, it will drive the lower wedge block 502 to move backward. The lower wedge block 502 drives the cutting knife 304 to move backward along the mounting strip 401, which is convenient for cutting the yarn and improving work efficiency. After the cutting is completed, the mounting box 303 is raised to a suitable height by controlling the hydraulic cylinder 302. The cutting knife 304 moves forward under the action of the elastic force of the second spring 403 and resets. Then, the mounting frame 301 is driven to move by the linear motor 6 to cut the other side of the knotted yarn part, thereby realizing cutting of the knotted yarn area.

[0030] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A yarn cutting mechanism for a warp knitting machine, comprising a workbench (1), a groove being provided on the top of the workbench (1), a conveyor belt (2) being provided in the groove, a cutting mechanism being provided above the conveyor belt (2), a mounting groove being provided on the top of the workbench (1), a drive assembly being provided in the mounting groove, the cutting mechanism being driven by the drive assembly to slide in the mounting groove, and characterized in that: The cutting mechanism comprises an installation box (303), a cutting knife (304) is connected to the installation box (303) via a connecting assembly, the bottom of the installation box (303) is open, the connecting assembly enables the cutting knife (304) to move in the up-down direction and the front-back direction, and a power assembly is provided between the installation box (303) and the cutting knife (304). The power assembly enables the cutting knife (304) to move in the front-back direction after contacting the yarn, thereby facilitating cutting of the yarn.

2. The yarn-knitting and cutting mechanism of a warp knitting machine according to claim 1, characterized in that: The connecting assembly includes two mounting bars (401), the mounting bars (401) slide up and down on the inner wall of the mounting box (303), a first spring (402) is connected between the mounting bars (401) and the inner top wall of the mounting box (303), a sliding groove is provided on the side where the two mounting bars (401) are close to each other, the cutting knife (304) slides back and forth in the sliding groove, and a second spring (403) is connected between the cutting knife (304) and the sliding groove.

3. The yarn-knitting and cutting mechanism of a warp knitting machine according to claim 1, characterized in that: The power assembly comprises a plurality of upper wedge blocks (501) arranged at equal intervals, wherein the upper wedge blocks (501) are fixedly connected to the inner top wall of the installation box (303), and the top of the cutting knife (304) is fixedly connected to a plurality of lower wedge blocks (502) arranged at equal intervals, wherein the wedge surfaces of the upper wedge blocks (501) and the lower wedge blocks (502) are in contact with each other.

4. The yarn-knitting and cutting mechanism of a warp knitting machine according to claim 1, characterized in that: The cutting mechanism further comprises a mounting frame (301), a hydraulic cylinder (302) is fixedly connected to the mounting frame (301), and the mounting box (303) is fixedly connected to the bottom of the hydraulic cylinder (302).

5. The yarn-knitting and cutting mechanism of a warp knitting machine according to claim 4, characterized in that: The driving assembly comprises a linear motor (6), the linear motor (6) being fixedly connected to a mounting slot provided on the top of the workbench (1), and the output end of the linear motor (6) being fixedly connected to the mounting frame (301).

6. The yarn-knitting cutting mechanism of a warp knitting machine according to claim 4, characterized in that: The mounting frame (301) is U-shaped with the opening facing downward.

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