Improved yarn passing porcelain rod, yarn gripper and yarn feeding device

Abstract

An improved yarn passing porcelain rod, yarn gripper and yarn feeding device, comprising a first split porcelain body and a second split porcelain rod designed in a split manner; the first split porcelain body is provided with a base and a first split porcelain rod; a through hole is arranged in the center of the second split porcelain rod along the length direction of the second split porcelain rod, the second split porcelain rod is placed in the remaining area of the base in a non-rotatable manner, the through hole is opposite to the through hole position of the base; the first split porcelain rod and the second split porcelain rod are respectively provided with a first yarn passing plane and a second yarn passing plane on the opposite sides to form a yarn passing gap; one end of a supporting shaft passes through a spring, the through hole of the second split porcelain rod, the through hole of the base and a fixing hole, and then is screwed with a nut; the first split porcelain rod and the second split porcelain rod pass through the first central hole of two yarn gripper porcelain pieces at the same time, the other end of the supporting shaft is screwed by a compression nut, and further elastic pressure is applied to the two yarn gripper porcelain pieces to make them abut against the base of the yarn passing porcelain rod; the spring is in a compressed state.

Description

Technical Field

[0001] This utility model relates to the field of yarn feeding devices in textile machines, and particularly to an improved yarn feeding ceramic rod, yarn clamp and its yarn feeding device. Background Technology

[0002] As a component of a circular weft knitting machine, the yarn feeder is mainly used to stably and evenly deliver the yarn from the yarn frame to the knitting needles. The guide rod, which passes through two pressure plates, can be designed as a cylindrical ceramic rod, such as... Figure 1-1 Referring to CN216471514U, the yarn guiding ceramic rod A is problematic because a single round rod design is prone to yarn slippage. Therefore, the industry more commonly uses two parallel yarn guiding ceramic rods B of different lengths, such as... Figure 1-2 and Figure 1-3 Referring to the yarn guide ceramic rod B disclosed in CN202482586U, the yarn guide ceramic rod B consists of a first ceramic rod B1 and a second ceramic rod B2. The first ceramic rod B1 and the second ceramic rod B2 are arranged in parallel and spaced apart, and the two opposing planes of the first ceramic rod B1 and the second ceramic rod B2 are designed as vertical surfaces. The yarn is passed between the first ceramic rod B1 and the second ceramic rod B2. Due to the obstruction of the first ceramic rod B1, the yarn flying phenomenon can be effectively avoided. In order to avoid yarn breakage when the yarn is wrapped around the surface of the yarn guide ceramic rod, the yarn guide ceramic rod needs to be ground and polished. However, since the yarn guide ceramic rod B is integrally molded, the gap between the first ceramic rod B1 and the second ceramic rod B2 is limited (generally the gap is 1.5mm-2mm). Even with frequent and long-term vibration polishing, there are still fine burrs on the outer surface of the two vertical surfaces, which can still cause yarn breakage and affect the weaving of high-quality fabrics.

[0003] In view of this, the inventor conducted in-depth research on the aforementioned deficiencies in the prior art, which led to the creation of this case. Summary of the Invention

[0004] The primary objective of this invention is to provide an improved yarn guide ceramic rod that has a smooth surface and causes minimal damage to yarn. The second objective of this invention is to provide a yarn clamp and yarn feeding device that provides good yarn feeding effect and keeps the yarn taut.

[0005] To achieve the above objectives, this utility model provides an improved yarn-passing ceramic rod, which is made of ceramic material and includes a first ceramic body and a second ceramic rod with a split design. The first ceramic body has a base, and a first ceramic rod extending upward from the top of the base. The second ceramic rod is non-rotatably placed in the remaining area of ​​the aforementioned base. The first and second ceramic rods have a first yarn-passing plane and a second yarn-passing plane respectively on opposite sides of their planes, forming a yarn-passing gap between the first and second yarn-passing planes. The outer contour of the first ceramic rod has a first arcuate surface, which is chamfered with the first yarn-passing plane. The outer contour of the second ceramic rod has a second arcuate surface, which is chamfered with the second yarn-passing plane. Furthermore, the base has a recessed groove in the remaining area of ​​the large-area connection to restrict the rotation of the second ceramic rod. The recessed groove has a base through hole. The center of the second ceramic rod has a through hole running from front to back along its length, and the through hole of the second ceramic rod is opposite to the position of the base through hole.

[0006] The shape and contour of the settling tank match the shape and contour of the end of the second ceramic rod, which is non-rotatably nested into the settling tank.

[0007] Furthermore, the outer contours of the cross-sections of the first and second ceramic dividing rods are arc-shaped.

[0008] Furthermore, the length and cross-sectional area of ​​the first ceramic dividing rod are both smaller than those of the second ceramic dividing rod.

[0009] A yarn clamping device, comprising: A threading rod, the top of which is provided with a threading ceramic eye, and a fixing plate extending vertically from the bottom of the threading rod, the fixing plate having a fixing hole. Two-layered ceramic tiles, each with a first central opening, are coaxial with each other; A spring, a support shaft, a nut and a clamping nut, wherein both ends of the support shaft are provided with threaded sections; It also includes the yarn-passing ceramic rod described in any of the preceding claims. Both ends of the support shaft have threaded sections. One end passes through the spring, the through hole of the second dividing ceramic rod, the through hole of the base, and the fixing hole, and is then screwed into a nut. The other end is used to screw into a clamping nut. The end of the support shaft facing the clamping nut forms a large-diameter section through an outwardly expanding step. By rotating the nut, the support shaft is axially displaced until its step edge abuts against the top end face of the second dividing ceramic rod, thus fixing the second dividing ceramic rod to the base of the first dividing ceramic body. One end of the spring abuts against the cap edge of the clamping nut, and the other end abuts against the two-layer yarn-cling ceramic sheet, so that the spring is in a compressed state. At the same time, both the first dividing ceramic rod and the second dividing ceramic rod pass through the first central opening of the two-layer yarn-cling ceramic sheet.

[0010] A yarn feeding device, comprising the aforementioned yarn feeding ceramic rod or yarn clamp.

[0011] With the above design, in the yarn feeding device, the yarn passing through the yarn guide ceramic bar passes through the yarn guide gap and then through the two yarn guide ceramic plates. Because the first and second yarn guide ceramic plates are pressed against by springs in a compressed state, the advancing portion of the yarn is clamped by the two yarn guide ceramic plates, creating a force that smooths it laterally and tightens it longitudinally. This achieves uniform yarn tension, which is not affected by the vibration of the yarn feeding wheel in the yarn feeding device, ensuring the yarn remains taut and feeds at a uniform speed. Particularly noteworthy is the design of the yarn guide ceramic bar as a separate unit, ensuring that... During the production of the yarn-passing ceramic rod, all outer surfaces of the first ceramic body and the second ceramic rod are exposed and can be vibrated and polished by the vibrating abrasive particles in the vibrating polishing machine to achieve a smooth finish. In the shape design process, for example, the first arc surface and the first yarn-passing plane are rounded and chamfered, and the second arc surface and the second yarn-passing plane are rounded and chamfered, etc., are designed to be as rounded as possible. With the chamfer design at various places, the surface of the yarn-passing ceramic rod may cause scratches or tears to the yarn, thereby improving the yield of yarn. Attached Figure Description

[0012] The specific description given as a non-limiting example better explains what the invention includes and how it can be practiced. Furthermore, this description refers to the accompanying drawings, in which: Figures 1-1 to 1-3 This is a schematic diagram illustrating the background technology. Figure 2 This is an exploded view of the improved yarn-passing ceramic rod of this utility model. Figure 3 This is a schematic diagram of the assembly of the improved yarn-passing ceramic rod of this utility model; Figure 4 This is an exploded view of the yarn clamping device of this utility model; Figure 5 This is a partial assembly diagram of the yarn clamp of this utility model; Figure 6 This is a reference diagram showing the combined state of the yarn clamp of this utility model.

[0013] Label Explanation 10. Yarn-passing ceramic rod; 1. First dividing ceramic body; 11. Base; 111. Base perforation; 112. Sinking groove; 12. First dividing ceramic rod; 121. First yarn-passing plane; 122. First arc surface; 2. Second dividing ceramic rod; 210. Second yarn-passing plane; 211. Second arc surface; 21. Through hole; 22. Yarn-passing gap; 3. Chamfer; 40. Yarn clamp; 4. Yarn clamping ceramic piece; 41. First central opening; 5. Yarn-passing rod; 51. Fixing piece; 511. Fixing hole; 52. Yarn-passing hole; 6. Spring; 61. Large end; 62. Small end; 7. Support shaft; 71. Threaded section; 72. Nut; 73. Compression nut; 74. Step edge. Detailed Implementation

[0014] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0015] Unless otherwise specified, the terms "first," "second," etc., in the claims and description are used to distinguish different objects, not to describe a specific order.

[0016] like Figure 2-3 As shown, an improved translucent porcelain rod 10 includes: a separate first porcelain body 1 and a second porcelain rod 2, wherein: The first ceramic body 1 is provided with a base 11 and a first ceramic separating rod 12 extending upward from the top of the base 11. The base 11 is provided with a base through hole 111 in the remaining area of ​​the large connection. The remaining area refers to the area opposite to the position of the first ceramic separating rod 12. For example, if the first ceramic separating rod 12 is offset on the left side of the base 11, then the remaining area of ​​the large connection is located on the right side. The second ceramic rod 2 has a through hole 21 extending from front to back along its length at its center. The remaining area of ​​the base 11, which is connected to the large section, is further provided with a recess 112 that matches the shape and size of the end of the second ceramic dividing rod 2, allowing the second ceramic dividing rod 2 to be non-rotatably nested into the recess 112. The insertion of the second ceramic dividing rod 2 into the recess 112 achieves a structural combination with the first ceramic dividing body 1, and the through hole 21 is relatively connected to the through hole 111 of the base. It should be noted that the base 11 can not only use the structure of the recess 112 to make the second ceramic dividing rod 2 non-rotatably set in the remaining area of ​​the base 11, but also by adhering glue or setting a locking structure to prevent rotation on the contact surface of the two.

[0017] The first dividing ceramic rod 12 and the second dividing ceramic rod 2 are respectively provided with a first yarn-passing plane 121 and a second yarn-passing plane 210 on opposite sides of the plane, and a yarn-passing gap is formed between the first yarn-passing plane 121 and the second yarn-passing plane 210; the outer contour of the first dividing ceramic rod 12 has a first arc surface 122, and the first arc surface 122 and the first yarn-passing plane 121 have an arc chamfer 3; the outer contour of the second dividing ceramic rod has a second arc surface 211, and the second arc surface 211 and the second yarn-passing plane 210 have an arc chamfer 3.

[0018] In this embodiment, the first ceramic dividing rod 12 is designed with an arc-shaped outer contour of its cross-section, as shown in the figure; the second ceramic dividing rod 2 is also designed with an arc-shaped outer contour of its cross-section. This shape is relatively rounded and suitable for having through holes 21 inserted in it. It corresponds to the shape of the first ceramic dividing rod 12 and is designed with a relatively smooth (rounded) external structure without sharp edges.

[0019] The length and cross-sectional area of ​​the first dividing ceramic rod 12 are both smaller than those of the second dividing ceramic rod 2, so as to ensure that the entire yarn guiding ceramic rod can rotate around the second dividing ceramic rod 2 as the main axis during the yarn feeding process.

[0020] The first ceramic body 1 and the second ceramic rod 2 have all their outer connecting parts set with rounded corners 3 to prevent sharp parts from scratching the threads.

[0021] like Figure 4-5 As shown, a yarn clamping device 40 includes a yarn-threading rod 5, two yarn-clamping ceramic pieces 4, a spring 6, a support shaft 7, a nut 72, a clamping nut 73, and any of the aforementioned yarn-passing ceramic rods 10. The top of the yarn-threading rod 5 is provided with a yarn-threading ceramic eye 52, and a fixing piece 51 extends from the lower part of the yarn-threading rod 5 in a vertical direction relative to the yarn-threading rod 5. The fixing piece 51 has a fixing hole 511. The two yarn-clamping ceramic pieces 4 each have a first central opening 41, and they are coaxial with each other. Both ends of the support shaft 7 are provided with threaded sections 71. One end of the support shaft 7 passes through the spring 6, the through hole 21 of the second dividing ceramic rod 2, the base through hole 111, and the fixing hole 511, and then connects with a nut 72. The second ceramic dividing rod 2 is fixed to the base 11 of the first ceramic dividing body 1 by screwing. The other end of the support shaft 7 is screwed to the clamping nut 73, so that one end of the spring 6 abuts against the cap edge of the clamping nut 73 and the other end abuts against the double-layered ceramic piece 4, so that the spring 6 is in a compressed state. In this embodiment, the spring 6 is a conical spring, with its large end 61 close to the double-layered ceramic piece 4 and its small end 62 close to the cap edge of the clamping nut 73. By adjusting the relative position of the clamping nut 73 and the support shaft 7, the degree of compression of the spring 6 can be adjusted, thereby realizing the adjustment of the elastic restoring force of the spring 6. At the same time, the first ceramic dividing rod 12 and the second ceramic dividing rod 2 both pass through the first central opening 41 of the double-layered ceramic piece 4.

[0022] In this embodiment, the end of the support shaft 7 facing the clamping nut 73 forms a large diameter section through an outwardly expanding step edge 74. When the support shaft 7 is inserted into the through hole 21 of the second ceramic rod 2, the support shaft 7 is axially displaced by rotating the nut 72 until its step edge 74 abuts against the top end face of the second ceramic rod 2, further ensuring that the second ceramic rod 2 can be stably locked on the base 11 of the first ceramic body 1, increasing the stability of the assembly of the second ceramic rod 2.

[0023] In some yarn feeding devices, a yarn clamp 40 as described above is provided. In the yarn feeding device, the yarn passes through the yarn hole 52 of the yarn threading rod 5 of the yarn clamp 40, passes between the two yarn clamping ceramic pieces 4, and then passes through the yarn gap 22 between the first dividing ceramic rod 12 and the second dividing ceramic rod 2. The yarn achieves a tensioning effect by passing through the plane of the second yarn passing plane 210, which is beneficial to the next process. When the yarn is used for weaving or other processes, it has a flat and straight state.

[0024] Because the connection between the first arc surface 122 and the first yarn-passing plane 121 has a rounded chamfer 3, and the connection between the second arc surface 211 and the second yarn-passing plane 210 also has a rounded chamfer 3, the passing yarns are well protected and will not be scratched or damaged by sharp edges. Furthermore, because the first ceramic body 1 and the second ceramic rod 2 are designed separately, vibratory grinding of both is particularly beneficial for the surface treatment of the first yarn-passing plane 121 and the second yarn-passing plane 210. After grinding, the surfaces of the first yarn-passing plane 121 and the second yarn-passing plane 210 are very smooth. Through the above design, the yarn breakage phenomenon caused by passing through the yarn presser can be avoided to the greatest extent, which is conducive to improving the yield of high-quality woven fabrics.

[0025] This utility model also discloses a yarn feeding device made using the yarn presser. Since the other components of the yarn feeding device are prior art, they will not be described in detail.

[0026] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An improved ceramic rod for passing yarn, which is made of ceramic material, characterized in that, It includes a first ceramic body (1) and a second ceramic rod (2) with a split design; The first ceramic body (1) is provided with a base (11) and a first ceramic rod (12) extending upward from the top of the base (11). The second ceramic rod (2) is non-rotatably placed in the remaining area of ​​the aforementioned base (11); The first dividing ceramic rod (12) and the second dividing ceramic rod (2) are respectively provided with a first yarn passing plane (121) and a second yarn passing plane (210) on opposite sides of the plane, and a yarn passing gap (22) is formed between the first yarn passing plane (121) and the second yarn passing plane (210); the outer contour of the first dividing ceramic rod (12) has a first arc surface (122), and the first arc surface (122) is chamfered with the first yarn passing plane (121); the outer contour of the second dividing ceramic rod (2) has a second arc surface (211), and the second arc surface (211) is chamfered with the second yarn passing plane (210).

2. The yarn-passing ceramic rod as described in claim 1, characterized in that, The base (11) has a groove (112) in the remaining area of ​​the large connection to restrict the rotation of the second ceramic rod (2). The groove (112) has a base through hole (111). The center of the second ceramic rod (2) has a through hole (21) running through it from front to back along its length. The through hole (21) of the second ceramic rod (2) is opposite to the base through hole (111).

3. The yarn-passing ceramic rod as described in claim 2, characterized in that: The shape and contour of the sink (112) match the end shape and contour of the second ceramic rod (2), and the second ceramic rod (2) is non-rotatably nested into the sink (112).

4. The yarn-passing ceramic rod as described in claim 1, characterized in that: The outer contours of the cross-sections of the first ceramic rod (12) and the second ceramic rod (2) are arc-shaped.

5. The yarn-passing ceramic rod as described in claim 1, characterized in that: The length and cross-sectional area of ​​the first ceramic rod (12) are both smaller than the length and cross-sectional area of ​​the second ceramic rod (2).

6. A yarn clamping device, comprising: A threading rod (5) is provided with a threading ceramic eye (52) at the top of the threading rod (5) and a fixing piece (51) extends vertically from the lower part of the threading rod (5), and a fixing hole (511) is provided on the fixing piece (51). Two-layered ceramic tiles (4), each of which has a first central opening (41), are coaxial with each other; A spring (6), a support shaft (7), a nut (72) and a clamping nut (73), wherein both ends of the support shaft (7) are provided with threaded sections (71); Its features are: It also includes the yarn-passing ceramic rod (10) as described in any one of claims 1 to 5, one end of the support shaft (7) passing through the spring (6), the through hole (21) of the second ceramic rod (2), the through hole (111) of the base, and the fixing hole (511), and then being screwed to a nut (72), the other end being used to be screwed to a clamping nut (73), and the end of the support shaft (7) facing the clamping nut (73) forms a large diameter section along an outwardly expanding step (74), and by rotating the nut (72), the yarn-passing ceramic rod (10) is screwed to a nut (72). The support shaft (7) is axially displaced until its step edge (74) abuts against the top end face of the second ceramic rod (2), so that the second ceramic rod (2) is fixed to the base (11) of the first ceramic body (1); one end of the spring (6) abuts against the cap edge of the clamping nut (73), and the other end abuts against the double-layered ceramic piece (4), so that the spring (6) is in a compressed state; at the same time, the first ceramic rod (12) and the second ceramic rod (2) both pass through the first central opening (41) of the double-layered ceramic piece (4).

7. A yarn feeding device, characterized in that: It includes the yarn-passing ceramic rod (10) as described in any one of claims 1 to 5.

8. A yarn feeding device, characterized in that: It includes the yarn clamp (40) as described in any of claims 6.

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