Yarn breaking device for jacquard

Abstract

The utility model relates to the technical field of textile equipment, in particular to a yarn breaking device for a jacquard machine, which comprises a mounting rack, a mounting plate is fixedly arranged on the mounting rack through a vertical rod, the mounting plate is positioned above the mounting rack, an arc-shaped yarn guide bulge is arranged on the mounting rack below the mounting plate, and the arc-shaped yarn guide bulge is positioned above the mounting rack. An inwards-concave long hole is formed in the highest position of the arc-shaped yarn guide protrusion, a cutting knife is arranged on the vertical lifting mechanism, a plurality of guide rods in the vertical direction are arranged on the portion, above the arc-shaped yarn guide protrusion, of the installation plate, a pressing block is arranged on the guide rods below the installation plate, and a first electric push rod is arranged on the installation plate. The telescopic end of the first electric push rod is connected with the pressing block, and the first electric push rod drives the pressing block to move downwards to be attached to the arc-shaped yarn guide protrusion. According to the yarn breaking device for the jacquard machine, yarn on the arc-shaped yarn guide protrusion can be pressed and held through the pressing block, the pressing and holding range is widened, the pressed and held yarn is cut through the cutting knife, and the accuracy of the cutting position is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to textile equipment technical field especially jacquard machine yarn breaking device. BACKGROUND

[0002] The jacquard machine needs to cut yarn in the processing, and the existing technology is to clamp the yarn at both ends by pressing block, and then cut it by blade. For example, the automatic yarn breaking mechanism of the jacking jacquard machine disclosed in application No. CN202220851147.1 comprises a base, a supporting frame is fixedly connected to the inner wall of the bottom of the base, a supporting block is fixedly connected to the outer wall of the top of the base, an automatic telescopic rod is fixedly connected to the inner wall of the top of the supporting frame, a cutting head is fixedly connected to the bottom of the automatic telescopic rod, a connecting frame is fixedly connected to the outer wall of the automatic telescopic rod, and a positioning block is fixedly connected to the bottom of the connecting frame. The automatic yarn breaking mechanism of the jacking jacquard machine is convenient for clamping the yarn when cutting, and solves the problem of jamming or winding of the yarn after falling.

[0003] However, in actual use, the yarn is clamped at both ends during cutting, and the yarn is kept taut, so that the yarn may be broken under stress when being cut by the cutting head, and the cutting position is not accurate. INVENTION CONTENTS

[0004] The utility model discloses a jacquard machine yarn breaking device that can clamp the yarn and cut it with a cutting knife, has high cutting precision and good stability.

[0005] The utility model discloses a jacquard machine yarn breaking device, including the mounting bracket, the mounting plate is fixedly provided with through the vertical rod on the mounting bracket, the mounting plate is located the mounting bracket top, set up the arc yarn guide protruding on the mounting bracket below the mounting plate, set up the female long hole at the highest place of arc yarn guide protruding, female long hole is through arc yarn guide protruding, set up the vertical lifting mechanism on the mounting bracket below arc yarn guide protruding, set up the cutting knife on the vertical lifting mechanism, cutting knife is located female long hole range, set up a plurality of vertical direction's guide rod on the mounting plate above arc yarn guide protruding, set up the pressing block on the guide rod below the mounting plate, the pressing block is arc, set up first electric push rod on the mounting plate, the telescopic end of first electric push rod is connected with the pressing block, and first electric push rod drives the pressing block to descend and fit arc yarn guide protruding.

[0006] The elastic strip inclined downward is arranged at both ends of the pressing block, and when the pressing block moves downward, the elastic strip contacts the arc yarn guide protrusion first.

[0007] The vertical lifting mechanism comprises a guide column arranged between the mounting frame and the arc-shaped yarn guide protrusion, a sliding block is arranged on the guide column, the cutting knife is arranged on the sliding block, and a second electric push rod is arranged on the mounting frame below the sliding block.

[0008] The arc-shaped yarn guide protrusion is made of ceramic material, and the pressing block is made of rubber material.

[0009] The elastic strip is made of silica gel material.

[0010] The jacquard yarn breaking device obtained by the utility model can press and hold the yarn on the arc-shaped yarn guide protrusion by the pressing block, improve the pressing range, and cut the pressed yarn by the cutting knife, so that the cutting position is accurate. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a front view of the utility model;

[0012] Figure 2 It is a left view of the utility model;

[0013] Figure 3 It is Figure 2 A-A sectional view of the utility model;

[0014] Figure 4 It is a perspective view of the utility model. DETAILED DESCRIPTION

[0015] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects of the utility model will be described in detail below in combination with the drawings and preferred embodiments.

[0016] Example 1:

[0017] As Figures 1-4The utility model discloses a jacquard machine yarn breaking device, including the mounting bracket 1, is fixed with the mounting plate 3 through the vertical rod 2 and is arranged on the mounting bracket 1, the mounting plate 3 is located the mounting bracket 1 top, is provided with the arc yarn guide boss 4 on the mounting bracket 1 below the mounting plate 3, is provided with the female long hole 13 on the highest place of arc yarn guide boss 4, the female long hole 13 is through arc yarn guide boss 4, is provided with vertical lifting mechanism on the mounting bracket 1 below arc yarn guide boss 4, is provided with cutting knife 11 on vertical lifting mechanism, cutting knife 11 is located the female long hole 13 range, is provided with several vertical direction guide rod 5 on the mounting plate 3 above arc yarn guide boss 4, is provided with the pressing block 6 on the guide rod 5 below the mounting plate 3, the pressing block 6 is arc, is provided with the first electric push rod 7 on the mounting plate 3, the telescopic end of first electric push rod 7 is connected with the pressing block 6, first electric push rod 7 drives the pressing block 6 and moves down and is pasted with arc yarn guide boss 4.

[0018] The mounting bracket 1 is a base, which can be a thick plate or a frame structure. The mounting plate 3 is arranged on the mounting bracket 1 through the vertical rod 2, and the mounting plate 3 is located above the mounting bracket 1 with a gap therebetween. The arc yarn guide boss 4 is fixed on the mounting bracket 1, and the yarn guide direction is perpendicular to the axial direction of the arc yarn guide boss 4. The pressing block 6 is arranged above the arc yarn guide boss 4, and the yarn passes between the arc yarn guide boss 4 and the pressing block 6. When the yarn needs to be broken, the first electric push rod 7 drives the pressing block 6 to move down, holds the yarn between the pressing block 6 and the arc yarn guide boss 4, and the female long hole 13 on the arc yarn guide boss 4 is also arranged in the axial direction. Therefore, the yarn held is located within the female long hole 13. At this time, the cutting knife 11 is driven by the vertical lifting mechanism to rise and pass through the female long hole 13 to cut the yarn, thereby achieving yarn breaking. In this process, the yarn between the pressing block 6 and the arc yarn guide boss 4 is completely pasted, and the cutting process is more stable and accurate. The curvature of the upper surface of the arc yarn guide boss 4 is consistent with the curvature of the pressing block 6. Therefore, the yarn can be clamped after the two are pasted, and the clamping is stable and reliable.

[0019] The elastic strips 8 inclined downward are arranged at both ends of the pressing block 6. When the pressing block 6 moves down, the elastic strips 8 contact the arc yarn guide boss 4 before the pressing block 6. The two ends of the pressing block 6 refer to the two ends in the yarn conveying direction. When the pressing block 6 is pressed down, the elastic strips 8 inclined downward are in contact with the arc yarn guide boss 4 in priority. When the pressing continues, the yarn between the elastic strips 8 and the arc yarn guide boss 4 is tensioned, so that the yarn clamped by the pressing block 6 and the arc yarn guide boss 4 is kept in a tensioned state, thereby ensuring the accuracy of cutting.

[0020] The vertical lifting mechanism comprises a guide column 9 arranged between the mounting frame 1 and the arc-shaped guide protrusion 4, a sliding block 10 arranged on the guide column 9, and a cutting knife 11 arranged on the sliding block 10, and a second electric push rod 11 arranged on the mounting frame 1 below the sliding block 10. The guide column 9 is fixed between the mounting frame 1 and the arc-shaped guide protrusion 4, and the sliding block 10 is slidingly connected to the guide column 9 to realize vertical lifting, and the cutting knife 11 is fixed to the sliding block 10, so that the cutting knife 11 can be lifted when the second electric push rod 11 drives the sliding block 10 to move. When the yarn is normally conveyed, the cutting knife 11 moves downward to the inside of the long hole 13, that is, the cutting edge of the cutting knife 11 is below the arc-shaped guide protrusion 4, so as to avoid interference with the yarn.

[0021] The arc-shaped guide protrusion 4 is made of ceramic material. Since the yarn is in contact with the arc-shaped guide protrusion 4 during the conveying process, the ceramic material is used to reduce wear and friction on the yarn.

[0022] The pressing block 6 is made of rubber material, which can better press the yarn on the arc-shaped guide protrusion 4, and will not damage the cutting knife 11 when the cutting knife 11 cuts the yarn, thereby prolonging the service life.

[0023] The elastic strip 8 is made of silica gel material. When the elastic strip 8 moves downward with the pressing block 6, the end of the elastic strip 8 first contacts the arc-shaped guide protrusion 4, and the yarn at both ends of the arc-shaped guide protrusion 4 is pressed between the elastic strip 8 and the arc-shaped guide protrusion 4. When continuously pressed, the yarn in the range of the arc-shaped guide protrusion 4 can be kept in a taut state, thereby greatly improving the tension of the yarn for cutting, and improving the accuracy and reliability of cutting.

[0024] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0025] In the description of the present application, it should be noted that unless specifically stated and limited otherwise, the terms "mounting", "connected", "connection" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] In the present application, unless otherwise specifically stated and limited, "on" or "under" the first feature of the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0027] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with a preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content without departing from the scope of the present application, and any simplification, modification, equivalent change and modification of the above embodiment according to the technical essence of the present application still belong to the scope of the present application.

Claims

1. A yarn breaking device for a jacquard machine, characterized in that: The installation frame is provided with an installation plate fixed by a vertical rod, the installation plate is above the installation frame, an arc-shaped yarn guide protrusion is arranged below the installation plate, an inner recessed long hole is arranged at the highest position of the arc-shaped yarn guide protrusion, the inner recessed long hole penetrates the arc-shaped yarn guide protrusion, a vertical lifting mechanism is arranged below the arc-shaped yarn guide protrusion, a cutting knife is arranged on the vertical lifting mechanism, the cutting knife is within the range of the inner recessed long hole, a plurality of vertical guide rods are arranged above the installation plate, a pressing block is arranged below the guide rod, the pressing block is arc-shaped, a first electric push rod is arranged on the installation plate, the telescopic end of the first electric push rod is connected with the pressing block, and the first electric push rod drives the pressing block to move downward and be attached to the arc-shaped yarn guide protrusion.

2. A yarn breaking device for a jacquard machine according to claim 1, characterized in that: An elastic strip inclined downward is arranged at both ends of the pressing block, when the pressing block moves downward, the elastic strip contacts the arc-shaped yarn guide protrusion earlier than the pressing block.

3. The yarn breaking device for a jacquard machine according to claim 1, characterized in that: The vertical lifting mechanism comprises a guide column arranged between the installation frame and the arc-shaped yarn guide protrusion, a sliding block is arranged on the guide column, and the cutting knife is arranged on the sliding block.

4. The yarn breaking device for a jacquard machine according to claim 1, characterized in that: The arc-shaped yarn guide protrusion is made of ceramic material, and the pressing block is made of rubber material.

5. The yarn breaking device for a jacquard machine according to claim 2, characterized in that: The elastic strip is made of silica gel material.

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