A yarn feeding and clamping mechanism for a large circular knitting machine

Abstract

The present invention discloses a yarn feeding and clamping mechanism of a large circular knitting machine, comprising a yarn clamping base, a first motor, an output shaft of the first motor being detachably connected to a yarn drum, a yarn clamping moving ring, a first convex ring being integrally formed on the yarn clamping moving ring, a yarn clamping sleeve ring moving within the range of the first convex ring, a yarn clamping groove being provided on the lower bottom surface of a second component or at the connection between the first component and the second component, and a first spring being fixed between the bottom of the first component and the bottom of a first moving cavity. When the first motor rotates at a high speed, the yarn drum output line passes through the yarn clamping sleeve ring and enters the yarn feeding port for output, the yarn clamping sleeve ring will move up and down due to the height of the yarn drum output line, and the yarn clamping moving ring will follow the up and down movement due to the centrifugal force, when the yarn stops rotating in the first motor, the yarn clamping moving ring will descend, the second component will clamp the yarn to make it enter the yarn clamping groove, and then the yarn clamping moving ring will continue to descend, and the yarn located at the upper part will press the second component downward to achieve the yarn clamping.

Description

Technical Field

[0001] The invention relates to the field of textile production accessories, and in particular to a yarn feeding and clamping mechanism of a circular knitting machine. Background Art

[0002] Circular knitting machine, scientifically known as circular weft knitting machine (or circular weft knitting machine). Circular knitting machine has developed rapidly because of its multiple loop forming systems (called yarn feeding paths or loop forming paths in enterprises, referred to as paths), high speed, high output, fast pattern change, good fabric quality, few processes and strong product adaptability. Circular knitting machine is generally divided into two categories: single-sided series and double-sided series. However, according to the types of fabrics (academically called fabrics, commonly known as grey fabrics in factories), there are the following types: 1. Ordinary single-sided circular knitting machine; 2. Single-sided terry machine; 3. Three-thread weft inserting machine; 4. Jacquard single-sided circular knitting machine; 5. Rib machine; 6. Ordinary double-sided circular knitting machine; 7. Jacquard double-sided circular knitting machine. In addition, there are some special circular knitting machines, namely, transfer circular knitting machines (including transfer rib machines, single-sided transfer circular knitting machines, double-sided transfer circular knitting machines, etc.), double-sided terry machines (that is, both sides of the fabric have terry effects), and double-sided single-sided machines (that is, double-sided circular knitting machines). The knitting circular knitting machine is composed of a frame, a yarn supply mechanism, a transmission mechanism, a lubrication and dust removal (cleaning) mechanism, an electrical control mechanism, a material discharge mechanism, a pulling and winding mechanism, and other auxiliary devices. The yarn supply mechanism includes a yarn clamp, which clamps each yarn when the machine stops, so as to prevent the yarn on the yarn tube from continuing to be drawn out due to inertia. When the circular knitting machine is running normally, the yarn clamp does not contact the yarn. Before each yarn on the weaving shaft enters the automatic stop hook, it must first pass through a yarn clamp. When the yarn breaks or stops due to other reasons, the yarn clamp will clamp the yarn at the same time.

[0003] However, when the existing yarn clamp is working, the yarn will rub against the yarn clamp and break, which affects the production efficiency. Therefore, it is very important to obtain a yarn feeding and clamping mechanism for a large circular knitting machine that overcomes the above defects. Summary of the invention

[0004] In order to solve at least one of the above technical problems, the present invention provides a yarn feeding and clamping mechanism of a large circular knitting machine, comprising a yarn clamping base and a first motor, wherein the output shaft of the first motor is detachably connected to a yarn drum, the yarn clamping base is located outside the first motor, and further comprises a yarn clamping moving ring, wherein a first convex ring is integrally formed on the yarn clamping moving ring, and further comprises a yarn clamping sleeve ring moving within the range of the first convex ring, wherein the cross section of the yarn clamping sleeve ring is an arc;

[0005] It also includes a yarn feeding mechanism fixed above the yarn drum, the yarn feeding mechanism includes a yarn feeding plate and a yarn feeding bracket, and the yarn feeding plate is fixed on the yarn feeding bracket;

[0006] A first movable cavity is provided on the inner wall of the yarn clamping base, a second movable cavity connected with the first movable cavity is provided on the outer wall of the yarn clamping base, and the yarn clamping member also includes a yarn clamping member, the yarn clamping member includes a first component located in the first movable cavity and a second component located in the second movable cavity, the first component and the second component are integrally formed and the angle between them is a right angle or an obtuse angle, a yarn clamping groove is provided on the lower bottom surface of the second component or at the connection between the first component and the second component, and a first spring is fixed between the bottom of the first component and the bottom of the first movable cavity.

[0007] The first component and the second component are integrally formed and the angle between them is a right angle or an obtuse angle, so that the yarn can pass through the inclined surface of the bottom surface of the second component and enter the yarn clamping groove. The bottom surface of the second component above the yarn clamping groove has two curved surfaces on both sides.

[0008] Through the above technical solution, when the first motor rotates at high speed, the yarn bobbin thread passes through the yarn clamping ring and enters the yarn inlet for output. The yarn clamping ring moves up and down due to the height of the yarn bobbin thread, and due to the centrifugal force, the yarn clamping moving ring moves up and down accordingly.

[0009] A bearing is fixed between the output shaft of the first motor and the inner wall of the yarn clamping base to reduce friction.

[0010] As a preferred embodiment of the above, the cross section of the first convex ring is circular and is integrally formed on the top of the clamping yarn moving ring, and the bottom of the first convex ring is tangent to the top of the clamping yarn moving ring. The cross section of the clamping yarn sleeve is circular, elliptical or circular triangle. A notch is provided on the clamping yarn sleeve, and a second convex ring is integrally formed at the notch, the second convex ring is circular, and the size of the notch is smaller than the diameter of the first convex ring.

[0011] Through the above technical solution, the first convex ring and the second convex ring cooperate with each other to reduce friction, and because the cross-section of the yarn clamping ring is a circle, an ellipse, or a circular triangle, the yarn can be prevented from being cut by sharp corners at right angles or other angles, thereby ensuring the yarn integrity and product quality.

[0012] The setting of the notch can facilitate the yarn clamping ring to be detachably mounted on the first convex ring and to move on the circle formed by the first convex ring, that is, it can move on the first convex ring according to the yarn output when the yarn tube rotates.

[0013] As a preferred embodiment of the above, when the yarn clamping member moves downward, the side wall of the yarn clamping base enters the yarn clamping groove.

[0014] Through the above technical solution, when the first motor stops rotating, the yarn clamping movable ring will descend, and the second component will clamp the yarn to make it enter the yarn clamping groove, and then the yarn clamping movable ring will continue to descend, and the yarn at the upper part will press the second component down to further achieve the yarn clamping.

[0015] As a preferred embodiment of the above, a first arc surface is formed on the end of the second component.

[0016] Through the above technical solution, the setting of the first curved surface can prevent the yarn from being broken due to friction with sharp corners.

[0017] The top of the yarn clamping base is in the shape of a truncated cone that contracts inwardly and upwardly.

[0018] An opening is provided on the yarn feeding plate, and a yarn feeding bend is integrally formed around the opening, and the yarn feeding bend gradually closes to form a yarn feeding opening.

[0019] Through the above technical solution, the yarn inlet is provided with a yarn inlet bend, which can ensure the integrity of the yarn, prevent the yarn from breaking, and ensure the quality of the produced fabric.

[0020] Compared with the prior art, the advantages of the present invention are: the present invention has a simple structure, when the first motor rotates at high speed, the yarn tube wire passes through the yarn clamping ring and enters the yarn inlet for output, the yarn clamping ring will move up and down due to the height of the yarn tube wire, and due to the centrifugal force, the yarn clamping movable ring will follow the up and down movement, when the first motor stops, the yarn clamping movable ring will drop, the second component will clamp the yarn and make it enter the yarn clamping groove, then the yarn clamping movable ring will continue to drop, the yarn at the upper part will press the second component down, further realizing the yarn clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional schematic diagram of the present invention;

[0022] Figure 2 It is a schematic cross-sectional view of the present invention when the yarn is clamped;

[0023] Figure 3 It is a stereogram of the clamping yarn moving ring;

[0024] Figure 4 It is a stereoscopic diagram of the yarn clamping ring;

[0025] Figure 5 for Figure 2 A magnified image of point A;

[0026] Figure 6 for Figure 2 A magnified view of point B;

[0027] Figure 7 for Figure 1 Schematic diagram of the cross section at CC;

[0028] Reference numerals: 1-yarn clamping base; 101-first movable cavity; 102-second movable cavity; 103-yarn clamping member; 1031-first component; 1032-second component; 104-yarn clamping groove; 105-first spring; 106-arc surface; 10321-first arc surface;

[0029] 201-first motor; 202-yarn bobbin;

[0030] 301-yarn clamping moving ring; 302-first convex ring; 303-yarn clamping ring;

[0031] 401-bearing;

[0032] 501-notch; 502-second convex ring;

[0033] 6- first inclined surface;

[0034] 7-Second slope;

[0035] 801-yarn inlet; 802-yarn inlet bend. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the present invention, and thus to more clearly define the scope of the protection claimed in the present invention, the present invention is described in detail with respect to certain specific embodiments of the present invention. It should be noted that the following are only certain specific implementations of the present invention, which are only some embodiments of the present invention, wherein the specific and direct description of the relevant structures is only for the convenience of understanding the present invention, and each specific feature does not naturally and directly limit the scope of implementation of the present invention.

[0037] Referring to the accompanying drawings, the present invention adopts the following technical scheme: a yarn feeding and clamping mechanism of a large circular knitting machine, comprising a yarn clamping base 1, and also comprising a first motor 201, wherein the output shaft of the first motor 201 is detachably connected to a yarn drum 202 in an existing manner, the yarn clamping base 1 is located outside the first motor 201, and also comprises a yarn clamping moving ring 301, wherein a first convex ring 302 is integrally formed on the yarn clamping moving ring 301, and also comprises a yarn clamping sleeve ring 303 moving within the range of the first convex ring 302, wherein the cross section of the yarn clamping sleeve ring 303 is an arc;

[0038] It also includes a yarn feeding mechanism fixed above the yarn drum 202, the yarn feeding mechanism includes a yarn feeding plate and a yarn feeding bracket, and the yarn feeding plate is fixed on the yarn feeding bracket;

[0039] A first movable cavity 101 is provided on the inner wall of the yarn clamping base 1, and a second movable cavity 102 connected to the first movable cavity 101 is provided on the outer wall of the yarn clamping base 1, and also includes a yarn clamping part 103. The yarn clamping part 103 includes a first component 1031 located in the first movable cavity 101 and a second component 1032 located in the second movable cavity 102. The first component 1031 and the second component 1032 are integrally formed and the angle between them is a right angle or an obtuse angle. A yarn clamping groove 104 is provided on the lower bottom surface of the second component 1032 or at the connection between the first component 1031 and the second component 1032. A first spring 105 is fixed between the bottom of the first component 1031 and the bottom of the first movable cavity 101.

[0040] There are a plurality of the first movable chambers 101 and the second movable chambers 102, which are arranged on the yarn clamping base 1, or two adjacent first movable chambers 101 are connected to form a ring.

[0041] The first component 1031 and the second component 1032 are integrally formed and the angle between them is a right angle or an obtuse angle, so that the yarn passes through the inclined surface of the bottom surface of the second component 1032 and enters the yarn clamping groove 104. The bottom surface of the second component 1032 above the yarn clamping groove 104 has arc surfaces 106 on both sides.

[0042] Through the above technical solution, when the first motor 201 rotates at high speed, the yarn output from the yarn tube 202 passes through the yarn clamping ring 303 and enters the yarn inlet 801 for output. The yarn clamping ring 303 will move up and down due to the height of the yarn output from the yarn tube 202, and due to the centrifugal force, the yarn clamping movable ring 301 will follow and move up and down.

[0043] A bearing 401 is fixed between the output shaft of the first motor 201 and the inner wall of the yarn clamping base 1 to reduce friction.

[0044] As a preferred embodiment, the cross section of the first convex ring 302 is circular and is integrally formed at the top of the clamping yarn moving ring 301. The bottom of the first convex ring 302 is tangent to the top of the clamping yarn moving ring 301. The cross section of the clamping yarn sleeve 303 is circular, elliptical or circular triangle. A notch 501 is provided on the clamping yarn sleeve 303, and a second convex ring 502 is integrally formed at the notch 501. The second convex ring 502 is circular, and the size of the notch 501 is smaller than the diameter of the first convex ring 302.

[0045] Through the above technical solution, the first convex ring 302 and the second convex ring 502 cooperate with each other to reduce friction, and because the cross-section of the yarn clamping ring 303 is a circle, an ellipse, or a circular triangle, the yarn can be prevented from being cut by sharp corners at right angles or other angles, thereby ensuring the yarn integrity and product quality.

[0046] The setting of the notch 501 can facilitate the yarn clamping ring 303 to be detachably mounted on the first convex ring 302 and move on the circle formed by the first convex ring 302, that is, it can move on the first convex ring 302 according to the yarn output when the yarn tube 202 rotates.

[0047] As a preferred embodiment of the above, when the yarn clamping member moves downward, the side wall of the yarn clamping base 1 enters the yarn clamping groove 104. The yarn clamping groove 104 is provided with a first inclined surface 6, and the yarn clamping base is provided with a second inclined surface 7 that matches the first inclined surface 6. The inclination of the first inclined surface 6 is steeper than that of the second inclined surface 7, so as to better realize the yarn clamping work.

[0048] Through the above technical solution, when the first motor 201 stops rotating, the yarn clamping movable ring 301 will descend, and the second component 1032 will clamp the yarn to make it enter the yarn clamping groove 104, and then the yarn clamping movable ring 301 will continue to descend, and the yarn at the upper part will press the second component 1032 downward to further achieve the clamping of the yarn.

[0049] As a preferred embodiment of the above, a first arc surface 10321 is formed at the end of the second component 1032 .

[0050] Through the above technical solution, the setting of the first arc surface 10321 can prevent the yarn from being broken due to friction with sharp corners.

[0051] The top of the yarn clamping base 1 is in the shape of a truncated cone that contracts inwardly and upwardly.

[0052] An opening is provided on the yarn feeding plate, and a yarn feeding bend 802 is integrally formed around the opening, and the yarn feeding bend 802 gradually closes to form a yarn feeding opening 801.

[0053] Through the above technical solution, the yarn inlet 801 is provided with a yarn inlet bend 802, which can ensure the integrity of the yarn, prevent the yarn from breaking, and ensure the quality of the produced fabric.

[0054] Compared with the prior art, the advantages of the present invention are: the present invention has a simple structure, when the first motor 201 rotates at high speed, the yarn output from the yarn tube 202 passes through the yarn clamping ring 303 and enters the yarn inlet 801 for output, the yarn clamping ring 303 will move up and down due to the height of the yarn output from the yarn tube 202, and due to the centrifugal force, the yarn clamping movable ring 301 will follow the up and down movement, when the yarn of the first motor 201 stops, the yarn clamping movable ring 301 will drop, the second component 1032 will clamp the yarn and make it enter the yarn clamping groove 104, and then the yarn clamping movable ring 301 will continue to drop, and the yarn at the upper part will press the second component 1032 down, thereby further achieving the clamping of the yarn.

[0055] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0056] In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0057] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A yarn feeding and clamping mechanism for a circular knitting machine, characterized in that: It comprises a yarn clamping base (1), and also comprises a first motor (201), wherein the output shaft of the first motor (201) is detachably connected to a yarn tube (202), the yarn clamping base (1) is located outside the first motor (201), and also comprises a yarn clamping moving ring (301), wherein a first convex ring (302) is integrally formed on the yarn clamping moving ring (301), and also comprises a yarn clamping sleeve ring (303) that moves within the range of the first convex ring (302), wherein the cross section of the yarn clamping sleeve ring (303) is arc-shaped; It also includes a yarn feeding mechanism fixed above the yarn tube (202), the yarn feeding mechanism including a yarn feeding plate and a yarn feeding bracket, the yarn feeding plate being fixed on the yarn feeding bracket; The yarn clamping base (1) has a first movable cavity (101) formed on its inner wall, and a second movable cavity (102) communicating with the first movable cavity (101) formed on its outer wall. The yarn clamping base (1) also includes a yarn clamping member (103), wherein the yarn clamping member (103) includes a first component (1031) located in the first movable cavity (101) and a second component (1032) located in the second movable cavity (102), wherein the first component (1031) and the second component (1032) are integrally formed and the angle between them is a right angle or an obtuse angle, a yarn clamping groove (104) is formed on the lower bottom surface of the second component (1032) or at the connection between the first component (1031) and the second component (1032), and a first spring (105) is fixed between the bottom of the first component (1031) and the bottom of the first movable cavity (101); A first inclined surface (6) is provided on the yarn clamping groove (104), and a second inclined surface (7) matching with the first inclined surface (6) is provided on the yarn clamping base, wherein the first inclined surface (6) has a steeper slope than the second inclined surface (7); The yarn clamping ring (303) is provided with a notch (501), and a second convex ring (502) is integrally formed at the notch (501); the second convex ring (502) is circular, and the size of the notch (501) is smaller than the diameter of the first convex ring (302); The bottom surface of the second component (1032) located above the yarn clamping groove (104) has arc surfaces (106) on both sides; a bearing (401) is fixed between the output shaft of the first motor (201) and the inner wall of the yarn clamping base (1).

2. The yarn feeding and clamping mechanism of the circular knitting machine according to claim 1, characterized in that: The first convex ring (302) has a circular cross-section and is integrally formed on the top of the yarn clamping movable ring (301); the bottom of the first convex ring (302) is tangent to the top of the yarn clamping movable ring (301).

3. The yarn feeding and clamping mechanism of the circular knitting machine according to claim 1 is characterized in that: The cross section of the yarn clamping ring (303) is a circle, an ellipse or a circular triangle.

4. The yarn feeding and clamping mechanism of the circular knitting machine according to claim 1, characterized in that: When the yarn clamping member (103) moves downward, the side wall of the yarn clamping base (1) enters the yarn clamping groove (104).

5. The yarn feeding and clamping mechanism of the circular knitting machine according to claim 1, characterized in that: A first curved surface (10321) is formed at the end of the second component (1032).

6. The yarn feeding and clamping mechanism of the circular knitting machine according to claim 1, characterized in that: The top of the yarn clamping base (1) is in the shape of a truncated cone that contracts inwards and upwards.

7. The yarn feeding and clamping mechanism of the circular knitting machine according to claim 1, characterized in that: The yarn feeding plate is provided with an opening, and a yarn feeding bend (802) is integrally formed around the opening, and the yarn feeding bend (802) gradually closes to form a yarn feeding opening (801).

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