Yarn tension adjusting mechanism and jacquard warp knitting machine

Abstract

The utility model discloses a yarn tension adjusting mechanism and a warp knitting machine. The yarn tension adjusting mechanism comprises a yarn dividing needle, a yarn guide rod and a tension piece which are sequentially arranged in the yarn feeding direction. The fixed end of the tension piece is connected to the periphery of the yarn guide rod in the axis direction of the yarn guide rod. The yarn separating needles and the tension pieces are staggered, and the yarn penetrating positions of the yarn separating needles are lower than the yarn penetrating positions of the tension pieces. By the adoption of the technical scheme, the contact area of the yarn and the yarn guide rod is reduced, so that friction and damage between the yarn and the yarn guide rod are reduced, and the problems of yarn fluffing, yarn scraping, yarn breaking and the like are reduced.

Description

Technical Field

[0001] This application relates to the field of textile machinery technology, specifically to a yarn tension adjustment mechanism and a warp knitting machine. Background Technology

[0002] The yarn used in the jacquard warp knitting machine is tensioned by a tension adjustment mechanism. This mechanism is located along the length of the jacquard warp knitting machine, in front of the jacquard, and is primarily used to ensure that the yarn maintains a stable tension during the knitting process. This prevents yarn tangling, breakage, and pattern distortion caused by excessive or slack yarn tension, ensuring that the fabric produced by the jacquard warp knitting machine has a uniform, fine pattern and consistent quality.

[0003] The yarn tension adjustment mechanism mainly includes a yarn separating needle, a yarn guide rod, and a tension plate. The design of the existing yarn tension adjustment mechanism's yarn separating needle, yarn guide rod, and tension plate has certain limitations; see [reference needed]. Figure 1 As shown in the patent announcement CN203403196 U, a warp knitting yarn tension mechanism typically connects existing yarn separating needles and tension plates to both sides of a connector, which in turn connects to a guide rod. This creates a triangular spatial arrangement of the yarn separating needles, guide rod, and tension plate. As the yarn passes through these elements sequentially, it forms a wrapping angle on the guide rod, directly affecting the contact area and friction between the yarn and the guide rod. Over time and with continuous machine operation, friction between the yarn and the guide rod gradually accumulates. This continuous friction not only causes fuzzing on the yarn surface but can also scratch the yarn due to excessive friction, and in extreme cases, even lead to yarn breakage. These problems not only severely affect the appearance quality of the fabric, causing defects and unevenness, but also significantly reduce production efficiency and increase production costs. Utility Model Content

[0004] In view of the above problems, this application provides a yarn tension adjustment mechanism to solve the problem of the yarn forming a wrapping angle as it passes through the yarn guide rod, resulting in a large contact area between the yarn and the yarn guide rod.

[0005] To achieve the above objectives, the inventors provide a yarn tension adjustment mechanism, which includes a yarn separating needle, a yarn guide rod, and a tension plate arranged sequentially along the yarn feeding direction; the fixed end of the tension plate is connected to the outer periphery of the yarn guide rod along the axis of the yarn guide rod; the yarn separating needle and the tension plate are staggered, and the yarn passing position of the yarn separating needle is lower than the yarn passing position of the tension plate.

[0006] Furthermore, the included angle between the yarn separating needle and the tension plate is 60-90°.

[0007] Furthermore, the tension plate is horizontally connected to the outer periphery of the yarn guide rod.

[0008] Further, the yarn separating needle is fixed on a connecting surface of the yarn separating corner aluminum, and the other connecting surface of the corner aluminum mounting plate is connected with the corner aluminum mounting plate.

[0009] Further, the other connecting surface of the corner aluminum mounting plate corresponding to the yarn separating corner aluminum is recessed to form a slot, so that the other connecting surface of the yarn separating corner aluminum is inserted with the corner aluminum mounting plate.

[0010] Further, the first top screw is provided with a first screw hole leading to the slot on an end surface of the corner aluminum mounting plate corresponding to the slot, and the first top screw is screwed with the first screw hole to fasten the other end of the yarn separating corner aluminum in the slot.

[0011] Further, the yarn guide support is provided with a groove accommodating the yarn guide rod corresponding to the yarn guide rod.

[0012] Further, the connecting piece is arranged on the outer periphery of the yarn guide rod along the axial direction of the yarn guide rod, and the fixed end of the tension sheet is connected with the connecting piece.

[0013] Further, the tension sheet comprises a plurality of strip-shaped elastic teeth connected with the fixed end and arranged at intervals, the strip-shaped elastic teeth are provided with a yarn penetrating cylinder at the end, and the position of the strip-shaped elastic teeth close to the yarn penetrating cylinder is twisted along the height direction to change the yarn penetrating direction of the yarn penetrating cylinder.

[0014] A warp knitting machine, a jacquard warp knitting machine, the yarn on the jacquard of the jacquard warp knitting machine is tensioned by the yarn tension adjusting mechanism.

[0015] Different from the prior art, the above technical scheme optimizes the position layout and the angle between the yarn separating needle, the yarn guide rod and the tension sheet, so as to optimize the running path and the wrapping angle of the yarn, make the yarn pass through the yarn separating needle, the yarn guide rod and the tension sheet more smoothly, reduce the contact area between the yarn and the yarn guide rod, thereby reduce the friction and damage between the yarn and the yarn guide rod, and further reduce the occurrence of problems such as yarn fluffing, yarn scratching and yarn breaking.

[0016] The above content related to the description of the utility model is only a summary of the technical scheme of the application, in order to enable those skilled in the art to understand the technical scheme of the application more clearly, and then can be implemented according to the content recorded in the description and the drawings, and in order to make the above purpose and other purposes, characteristics and advantages of the application more easily understood, the following is described in combination with the specific embodiment and the drawings of the application. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings are only used to show the principles, implementation manners, applications, characteristics and effects of the specific embodiments of the present application and cannot be considered as limitations to the present application.

[0018] In the drawings:

[0019] Figure 1 Structure schematic view of the yarn tension adjusting mechanism described for the background art;

[0020] Figure 2 Structure schematic view of the yarn tension adjusting mechanism described for the specific embodiments;

[0021] Figure 3 Side view of the yarn tension adjusting mechanism described for the specific embodiments;

[0022] Figure 4 Side view of the yarn tension adjusting mechanism described for the specific embodiments;

[0023] Figure 5 Structure schematic view of the tension piece described for the specific embodiments.

[0024] The reference signs involved in the above drawings are explained as follows:

[0025] 10, the separating needle;

[0026] 20, the separating angle aluminum;

[0027] 30, the angle aluminum mounting plate;

[0028] 301, the slot; 302, the first screw hole; 303, the first jacking bolt;

[0029] 40, the guide rod;

[0030] 50, the connecting piece;

[0031] 501, the third screw hole; 502, the third jacking bolt;

[0032] 60, the guide bracket;

[0033] 601, the groove; 602, the second screw hole; 603, the second jacking bolt;

[0034] 70, the tension piece;

[0035] 701, the strip-shaped elastic tooth;

[0036] 7011, the yarn passing cylinder;

[0037] 80, the yarn;

[0038] a, the guide rod axial direction;

[0039] β, the included angle between the yarn separating needle and the tension sheet. DETAILED DESCRIPTION

[0040] To make the possible application scenarios, technical principles, specific schemes that can be implemented, purposes and effects that can be achieved of the present application clear, the following will be described in detail in combination with the specific embodiments listed and the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical schemes of the present application, and therefore only serve as examples, but cannot limit the protection scope of the present application.

[0041] In this article, the term "embodiment" means that the specific features, structures or characteristics described in combination with the embodiment can be included in at least one embodiment of the present application. The term "embodiment" appearing at various positions in the specification does not necessarily refer to the same embodiment, and does not particularly limit the independence or association between other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, each technical feature mentioned in each embodiment can be combined in any way to form a corresponding implementable technical scheme.

[0042] Unless otherwise defined, the meanings of the technical terms used herein are the same as those commonly understood by those skilled in the art to which the present application belongs; the use of related terms herein is only for the purpose of describing specific embodiments, and is not intended to limit the present application.

[0043] In the description of the present application, the phrase "and / or" is a description of the logical relationship between the objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally represents that the associated objects before and after are a "or" logical relationship.

[0044] In the present application, the terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, primary and secondary or order relationship between the entities or operations.

[0045] In the present application, without more limitation, the "includes", "contains", "has" or other similar open expressions used in the sentence are intended to cover non-exclusive inclusion, and these expressions do not exclude the presence of other elements in the process, method or product including the described elements, so that the process, method or product including a series of elements can not only include those limited elements, but also include other elements not explicitly listed, or also include the elements inherent to such process, method or product.

[0046] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0047] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0048] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral arrangement; it can be a direct connection or an indirect connection through an intermediate medium; it can be a relationship of two components combined together, an interaction relationship between two components, or a connection within two structures. Those skilled in the art to which this application pertains can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0049] See Figures 2-5 As shown, this utility model discloses a yarn tension adjustment mechanism that optimizes the positional layout and angles between the yarn separating needle 10, the yarn guide rod 40, and the tension plate 70 to optimize the travel path and wrapping angle of the yarn 80. This makes the yarn 80 pass through the yarn separating needle 10, the yarn guide rod 40, and the tension plate 70 more smoothly, reducing the contact area between the yarn 80 and the yarn guide rod 40. This reduces friction and damage between the yarn 80 and the yarn guide rod 40, thereby reducing problems such as yarn fuzzing, yarn scraping, and yarn breakage.

[0050] Combination Figures 2-4As shown below, an embodiment of a yarn tension adjustment mechanism is given, which includes a yarn separating needle 10, a yarn guide rod 40, and a tension plate 70 arranged sequentially along the yarn feeding direction; the fixed end of the tension plate 70 is connected to the outer periphery of the yarn guide rod 40 along the axis a of the yarn guide rod; the yarn separating needle 10 and the tension plate 70 are staggered, and the yarn insertion position of the yarn separating needle 10 is lower than the yarn insertion position of the tension plate 70.

[0051] The aforementioned yarn separating needle 10 is used to separate the unwound yarns from the spinning head, preventing entanglement and confusion between the yarns 80, and simultaneously guiding the yarns 80 along a predetermined path through the yarn guide rod 40. The aforementioned yarn guide rod 40 is used to stabilize the tension of the unwound yarn 80 during the unwinding process, and simultaneously guides the yarn 80 through the tension plate 70. The aforementioned tension plate 70 is used to adjust the tension of the yarn 80, ensuring smooth operation of the yarn 80 during the weaving process and preventing breakage or entanglement of the yarn 80 due to uneven, excessive, or insufficient tension. The aforementioned interlacing of the yarn separating needle 10 and tension plate 70 means that the yarn separating needle 10 is not connected to the yarn guide rod 40, but rather the end face of the yarn separating needle 10 and the end face of the tension plate 70 are spatially interlaced to form an angle, so that after the yarn 80 passes through the yarn separating needle 10, it will continue forward around the yarn guide rod 40 and then pass through the tension plate 70. The aforementioned yarn-passing position of the yarn separating needle 10 being lower than the yarn-passing position of the tension plate 70 means that when the yarn 80 passes through the yarn separating needle 10, forward around the yarn guide rod 40, and finally passes through the tension plate 70, in the height direction, the yarn-passing position of the yarn 80 at the yarn separating needle 10 is lower than the yarn-passing position at the tension plate 70, in order to reduce the contact area between the yarn 80 and the yarn guide rod 40, thereby reducing the friction and damage between the yarn 80 and the yarn guide rod 40, and thus reducing the occurrence of problems such as yarn fuzzing, yarn scraping, and yarn breakage.

[0052] The preferred angle β between the yarn separating needle and the tension plate is 60-90°. Within this angle range, after passing through the yarn separating needle 10, the yarn 80 can smoothly transition to the yarn guide rod 40 and the tension plate 70, making the yarn 80 move more smoothly along the yarn feeding path and ensuring that the yarn 80 receives uniform and appropriate tension throughout the entire yarn feeding process. This reduces friction between the yarn 80 and the yarn guide rod 40, thereby reducing the risk of yarn 80 wear and breakage.

[0053] There are several ways to implement the separation of yarn needles and tension plates with an angle β between them, and the yarn insertion position of the separation needle 10 being lower than that of the tension plate 70. Based on the height of the yarn guide rod 40, the height and angle of the separation needle 10 can be adjusted according to the angle set by the tension plate 70; alternatively, the angle of the tension plate 70 can be adjusted according to the height and angle set by the separation needle 10. In some embodiments, the tension plate 70 can be horizontally connected to the outer periphery of the yarn guide rod 40, thereby adjusting the height of the separation needle 10 so that the yarn insertion position of the separation needle 10 is lower than that of the tension plate 70, and then adjusting the angle of the separation needle 10 (the angle between the separation needle 10 and the tension plate 70).

[0054] In the warp knitting process, several tension plates 70 are usually closely arranged on the yarn guide rod 40, and therefore there are also several yarn separating plates, which are also closely arranged together. To fix the yarn separating plates, in some embodiments, a yarn separating angle aluminum 20 and at least two angle aluminum mounting plates 30 are also included. The fixed end of the yarn separating needle 10 is fixed to one connecting surface of the yarn separating angle aluminum 20; the other connecting surface of the angle aluminum mounting plate 30 is connected to the angle aluminum mounting plate 30. Furthermore, by directly fixing the angle aluminum mounting plate 30 to the warp knitting machine bracket or by providing a support frame for fixing the angle aluminum mounting plate 30, the yarn separating plates fixed to the yarn separating angle aluminum 20 are positioned in the yarn feeding direction before the yarn guide rod 40 and the tension plates 70. The connection method for fixing the fixed end of the yarn separating needle 10 to a connecting surface of the yarn separating angle aluminum 20 can be a fixed connection or a detachable connection. In some embodiments, through holes can be opened at the fixed end of the yarn separating needle 10 and at the corresponding position on a connecting surface of the yarn separating angle aluminum 20. Screws (or bolts) are threaded through the through holes of the fixed end of the yarn separating needle 10 and the connecting surface of the yarn separating angle aluminum 20 and threaded with nuts to fix the fixed end of the yarn separating needle 10 to a connecting surface of the yarn separating angle aluminum 20. Similarly, the connection method between the other connecting surface of the angle aluminum mounting plate 30 and the angle aluminum mounting plate 30 can be a fixed connection or a detachable connection. Taking a detachable connection as an example, the specific connection method between the other connecting surface of the angle aluminum mounting plate 30 and the angle aluminum mounting plate 30 is further explained. In some embodiments, the angle aluminum mounting plate 30 is recessed to form a slot 301 corresponding to the other connecting surface of the yarn separating angle aluminum 20 so that the other connecting surface of the yarn separating angle aluminum 20 can be inserted into the angle aluminum mounting plate 30. Of course, in order to prevent the splitting aluminum angle 20 from slipping out of the slot 301, a first tightening bolt 303 can also be provided. That is, a first screw hole 302 leading to the slot 301 is provided on one end of the angle aluminum mounting plate 30. The first tightening bolt 303 is threadedly connected to the first screw hole 302 so that the other end of the splitting aluminum angle 20 is fastened in the slot 301.

[0055] Similarly, to securely fix the yarn guide rod 40 and ensure its precise positioning during the textile process, some embodiments further include at least two yarn guide supports 60, each yarn guide support 60 having a groove 601 corresponding to the yarn guide rod 40 to accommodate it. Specifically, each yarn guide support 60 is cleverly provided with a groove 601 that matches the shape of the yarn guide rod 40, so that the yarn guide rod 40 can be smoothly and firmly installed in the groove 601 of the yarn guide support 60. This groove 601 not only provides a precise guiding and positioning space for the yarn guide rod 40, but also effectively restricts the movement of the yarn guide rod 40 in the horizontal and vertical directions, thereby enhancing the stability and reliability of the entire mechanism. Whether in yarn feeding, tension adjustment, or subsequent textile processing, its positional accuracy and stability can be maintained. This not only helps improve the production efficiency and quality of textiles, but also reduces production failures and yarn 80 losses caused by the shaking or misalignment of the yarn guide rod 40. Of course, to prevent the yarn guide rod 40 from falling out of the groove 601, a second tightening bolt 603 can be provided. That is, a second screw hole 602 is provided at the outer end of the yarn guide bracket 60 corresponding to the groove 601, leading to the groove 601. The second tightening bolt 603 is threadedly connected to the second screw hole 602 to secure the yarn guide rod 40 in the groove 601. Alternatively, the yarn guide bracket 60 can be directly fixed to the warp knitting machine bracket or a support frame can be provided to fix the yarn guide bracket 60, so that the yarn guide rod 40, which is accommodated in the groove 601 of the yarn guide bracket 60, is positioned between the yarn separating needle 10 and the tension plate 70 along the yarn feeding direction.

[0056] The fixed end of the aforementioned tension piece 70 is connected to the outer periphery of the yarn guide rod 40 along the axis a of the yarn guide rod. During warp knitting, several tension pieces 70 are typically arranged closely on the yarn guide rod 40, meaning several tension pieces 70 are closely arranged and connected to the outer periphery of the yarn guide rod 40 along the axis a. The connection method can be direct or indirect. In some embodiments, a connector 50 is also included. The connector 50 can be a block corresponding to each tension piece 70, or a strip of multiple closely arranged tension pieces 70, such as an aluminum strip. The connector 50 is located on the outer periphery of the yarn guide rod 40 along the axis a, and the fixed end of the tension piece 70 is connected to the connector 50. Specifically, a third screw hole 501 can be opened on the end face of the connector 50 corresponding to the fixed end of the tension piece 70. A third tightening bolt 502 is threaded into the third screw hole 501 to secure the fixed end of the tension piece 70 to the connector 50.

[0057] The tension plate 70 described above is used to adjust the tension of the yarn 80. In some embodiments, the tension plate 70 includes a plurality of strip-shaped elastic teeth 701 connected to a fixed end and spaced apart. Each strip-shaped elastic tooth 701 has a threading tube 7011 fixed at its bottom end. When the tension mechanism is working, after the yarn 80 passes through the yarn separating needle 10, it passes forward around the yarn guide rod 40 and then passes through the side of the threading tube 7011 at the bottom end of the strip-shaped elastic teeth 701 of the tension plate 70 to enter the knitting mechanism for weaving. In some embodiments, the tension plate 70 includes a plurality of strip-shaped elastic teeth 701 connected to a fixed end and spaced apart. Each strip-shaped elastic tooth 701 has a threading tube 7011 at its end. When the tension mechanism is working, after the yarn 80 passes through the yarn separating needle 10, it passes forward around the yarn guide rod 40 and then passes through the front of the threading tube 7011 at the end of the strip-shaped elastic teeth 701 of the tension plate 70 to enter the knitting mechanism for weaving. In some embodiments, the tension plate 70 includes a plurality of strip-shaped elastic teeth 701 connected to a fixed end and spaced apart. The ends of the strip-shaped elastic teeth 701 are provided with yarn-feeding cylinders 7011, and the strip-shaped elastic teeth 701 near the yarn-feeding cylinders 7011 are twisted in the height direction to change the yarn-feeding direction of the yarn-feeding cylinders 7011. This allows the yarn 80, after passing through the yarn-separating needle 10, to pass forward around the yarn guide rod 40 and then through the side of the yarn-feeding cylinders 7011 at the bottom of the ends of the strip-shaped elastic teeth 701 of the tension plate 70 to enter the knitting mechanism for weaving. Alternatively, a tension plate device as described in patent announcement number CN205617048U can be used, which will not be elaborated here.

[0058] This utility model also provides a warp knitting machine that uses the above-mentioned yarn tension adjustment mechanism to reduce the contact area between the yarn 80 and the guide rod 40, thereby reducing the friction and damage between the yarn 80 and the guide rod 40, and further reducing the occurrence of problems such as yarn fuzzing, yarn scraping and yarn breakage, thereby ensuring the efficient and stable operation of the warp knitting machine and the high-quality output of the fabric.

[0059] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A yarn tension adjusting mechanism, characterized in that, It includes a yarn separating needle, a yarn guide rod, and a tension plate arranged sequentially along the yarn feeding direction; the fixed end of the tension plate is connected to the outer periphery of the yarn guide rod along the axis of the yarn guide rod; the yarn separating needle and the tension plate are staggered, and the yarn passing position of the yarn separating needle is lower than the yarn passing position of the tension plate.

2. The yarn tension adjusting mechanism according to claim 1, characterized in that, The angle between the yarn separating needle and the tension plate is 60-90°.

3. The yarn tension adjusting mechanism according to claim 1, characterized in that, The tension plate is horizontally connected to the outer periphery of the yarn guide rod.

4. The yarn tension adjusting mechanism according to claim 1, characterized in that, It also includes a yarn-separating aluminum angle and at least two aluminum angle mounting plates, wherein the fixed end of the yarn-separating needle is fixed to one connecting surface of the yarn-separating aluminum angle; the other connecting surface of the aluminum angle mounting plate is connected to the aluminum angle mounting plate.

5. The yarn tension adjusting mechanism according to claim 4, characterized in that, The angle aluminum mounting plate is recessed to form a slot on the other connecting surface of the yarn-splitting angle aluminum, so that the other connecting surface of the yarn-splitting angle aluminum can be inserted into the angle aluminum mounting plate.

6. The yarn tension adjusting mechanism according to claim 5, characterized in that, It also includes a first tightening bolt, and one end of the angle aluminum mounting plate is provided with a first screw hole leading to the slot. The first tightening bolt is threadedly connected to the first screw hole so that the other end of the splitting angle aluminum is fastened in the slot.

7. The yarn tension adjusting mechanism according to claim 1, characterized in that, It also includes at least two yarn guide brackets, each having a groove corresponding to the yarn guide rod to accommodate the yarn guide rod.

8. The yarn tension adjusting mechanism according to claim 1, characterized in that, It also includes a connector, which is disposed on the outer periphery of the yarn guide rod along the axis of the yarn guide rod, and the fixed end of the tension plate is connected to the connector.

9. The yarn tension adjusting mechanism according to claim 1, characterized in that, The tension plate includes several strip-shaped elastic teeth connected to a fixed end and spaced apart. The ends of the strip-shaped elastic teeth are provided with yarn threading tubes, and the strip-shaped elastic teeth are twisted along the height direction near the yarn threading tubes to change the yarn threading direction of the yarn threading tubes.

10. A jacquard warp knitting machine, wherein the yarn on the jacquard warp knitting machine is tensioned by the yarn tension adjusting mechanism according to any one of claims 1-9.

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