A terry-free sinker on a terry knitting machine

Abstract

The present invention provides a non-terry sinker on a terry knitting machine, belonging to the technical field of spare parts for textile equipment. The sinker comprises a body, the top front end of the body has a straight section jaw, the rear end of the straight section jaw has a throat, the upper rear arc transition of the throat has a nose root, the nose root and the straight section form an inclination angle of 25 to 32 degrees, and the height of the throat is between 0.5-0.8 mm. The present invention has the advantages of being able to avoid terry loops on fabrics and no exposed bottom of fabrics.

Description

Technical Field

[0001] The invention belongs to the technical field of spare parts of textile equipment and relates to a terry-free sinker on a terry knitting machine.

[0002] The construction of the terry machine sinker is quite special. Its nose is lengthened. When knitting, the needle first hooks the veil and starts to press the needle. At the same time, the sinker pushes toward the core of the needle cylinder, so that the nose of the sinker holds the veil yarn. After the needle continuously presses down and hooks the ground yarn, the loop is removed. An elongated sinker coil is formed on the surface of the fabric. However, due to the different construction and triangular structure of the sinker, they hold the veil and the ground yarn differently, which results in the difference that the ground yarn is exposed on the reverse side or wrapped in the middle, which is divided into positive and reverse wrapping machines. The height of the terry is mainly determined by the height of the nose. The sinker models of the reverse wrapping machine are commonly 1.8mm, 2.5mm, 2.9mm, 3.2mm, etc. The reverse wrapping machine produces high-end varieties of velvet, with the ground not exposed, and the terry surface is sheared or pulled.

[0003] Small jacquards such as squares and vertical stripes are usually woven on a reverse wrapping machine, and the areas without terry are formed by the No. 0 sinker (no nose). The production of straight stripe patterns is achieved by arranging sinkers with and without noses on the sinker ring. The terry yarn on the No. 0 sheet can only be padded on the sheet forehead and formed synchronously with the ground yarn to form concave and convex straight stripes on the fabric surface. The straight stripes can also cooperate with the horizontal stripes to form the required square effect on the velvet surface.

[0004] The fabric surface is very poor after the conventional No. 0 sheet on the market is cut off and the sharp part of the sheet nose is adjusted. The bottom is exposed a lot, the hand feels rough, and the fabric surface is not soft. Analysis of the reasons: In the initial state of the loom, the wool yarn is easy to form a loop at the tip of the No. 0 sheet. When the sinker moves inward, the nose root is easy to cut the loop in the process of assisting the knitting needle to withdraw the loop. As a result, the bottom of the fabric is exposed, and the grid is not clear, and there is no grid effect. Summary of the invention

[0005] The purpose of the present invention is to provide a terry-free sinker for a terry knitting machine in view of the above-mentioned problems existing in the prior art. The technical problem to be solved by the present invention is how to make the fabric terry-free.

[0006] The objective of the present invention can be achieved through the following technical solutions: a terry-free sinker on a knitting terry machine, characterized in that it comprises a main body, the top front end of the main body has a straight section jaw, the rear end of the straight section jaw has a throat, the upper rear side of the throat has a nose root, the nose root and the straight section jaw form an inclination angle of 25 to 32 degrees, and the height of the throat is between 0.5-0.8 mm.

[0007] Furthermore, there is an inclination angle of 30° between the root of the blade nose and the jaw of the straight section of the blade.

[0008] Furthermore, the throat is an arc-shaped curved portion that is concave toward the rear side of the body.

[0009] Furthermore, the transition between the throat and the root of the nose is rounded.

[0010] The sinkers purchased on the market do not have a throat, and cannot control the angle of the ground yarn and terry yarn, resulting in the bottom being exposed; in addition, the angle of the bevel is very critical, which not only assists the synchronous back-looping of the ground yarn and terry yarn, but also does not interfere with the terry yarn to cause terry loops. After repeated practice, the angle is controlled at 30 degrees, so that the movement of the sinker can better cooperate with the knitting needles, and the straight strips and squares of the fabrics are not exposed and feel soft. The turning bevel from the throat must be inverted into an arc to ensure smoothness.

[0011] In weaving, the coordination between needles and sinkers is crucial. Figure 3 From the movement curve of the middle sinker and the knitting needle, it can be seen that the sinker has two large advances, commonly known as peak 1 and peak 2. The radial position of the sinker triangle in these two advances is analyzed below (the distance between the throat and the needle back line can be used to reflect the amount of advance of the sinker). Peak 1: The sinker advances forward, so that the ground yarn is placed at the inner point of the needle hook, close to the needle bar and the inner side of the terry yarn, so that the ground yarn and the terry yarn are in the correct relative position. When the sinker advances further forward, the shoulder of the sinker will be tightened and the terry yarn in the previous horizontal row will be arranged, but it cannot be arranged too much, otherwise the terry yarn will be broken or damaged. The existing No. 0 sinker has no throat grip, and the position of the ground yarn and the terry yarn will change, resulting in bottom exposure; in addition, when the sinker gripping force and the pressure of pushing out the coil are too small, it is easy to produce insufficient back loops, resulting in collection defects on the fabric. The main reason for this problem is that the root of the nose of the piece forms a small loop of terry yarn at the peak 1; the No. 0 sinker in this scheme retains the throat of the piece, which can well control the relative position of the ground yarn and the terry yarn. The root of the nose of the piece is inclined from the top of the throat to the upper right, and the terry yarn will not form a loop at this position but form a flat needle base cloth with the ground yarn. The sinkers purchased on the market do not leave a tiger's mouth (that is, the arc surface formed by the concave part of the throat of the piece). At this time, the padding angle of the ground yarn and the terry yarn cannot be controlled, resulting in the bottom being exposed. Generally speaking, the triangle of the sinker is adjusted so that the distance between the throat of the piece and the back of the needle is between 0.50 and 0.70 mm.

[0012] Peak 2: It is the key to weaving high-quality terry fabrics. By adjusting the coil to control the sinker triangle, the phenomenon of fabric exposure can be overcome. Generally speaking, it is more appropriate to make the throat of the sheet between 0.10 and 0.30 mm from the needle back. The No. 0 sinker purchased on the market is easy to cut the coil at the root of the sheet nose during the process of assisting the knitting needle to withdraw the loop and unsleeve when the peak 1 retreats to the peak 2, resulting in the bottom of the fabric being exposed, so that the grid is not clear and there is no grid effect. The No. 0 sinker in this scheme has a slope at the root of the sheet nose from the top of the throat to the upper right, and a certain height H is left at the throat. The H value is controlled between 0.5 and 0.8 mm. In this way, when the sinker advances, the slope can not destroy the terry in the previous horizontal row and play a role in finishing the previous horizontal row. Therefore, the angle of the slope is very critical, which not only assists the synchronous withdrawal of the ground yarn and the terry yarn, but also helps to finish the terry in the previous horizontal row. After repeated practice, the angle is controlled at 30 degrees, so that the movement of the sinker can better cooperate with the knitting needle, and the straight strips and squares of the fabric are not exposed and feel soft. The transition point from the tiger's mouth to the inclined plane must be inverted into an arc to ensure smoothness.

[0013] Through this kind of sinker, a series of small jacquard velvet products such as straight stripes and squares can be developed, which are very successful and popular in the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of this sedimentation plate.

[0015] Figure 2 yes Figure 1 Enlarged view of part A in the figure.

[0016] Figure 3 It is a schematic diagram of the movement state of the sinker and the knitting needle.

[0017] In the figure, 1, main body; 2, straight section of the blade jaw; 3, blade throat; 4, blade nose root; 5, sinker; 6, sinker triangle; 7, ground yarn; 8, terry yarn. DETAILED DESCRIPTION

[0018] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0019] like Figure 1 and Figure 2 As shown, it includes a main body 1, the top front end of the main body 1 has a straight section jaw 2, the rear end of the straight section jaw 2 has a throat 3, the upper rear side of the throat 3 has a nose root 4, the nose root 4 and the straight section jaw 2 have an inclination angle of 25 to 32 degrees, and the height of the throat 3 is between 0.5-0.8mm.

[0020] Furthermore, there is an inclination angle of 30° between the root portion 4 of the blade nose and the straight section blade jaw 2 .

[0021] Furthermore, the throat 3 is an arc-shaped curved portion that is concave toward the rear side of the body 1 .

[0022] The root of the nose 4 is tilted from the throat 3 to the upper right to form an inclined plane. A certain height H is left at the throat 3. The H value is controlled between 0.5-0.8mm. The sinkers purchased on the market do not leave a tiger's mouth, which cannot control the angle of the ground yarn and the terry yarn, resulting in the bottom being exposed; in addition, the angle of the inclined plane is very critical, which not only assists the synchronous back-looping of the ground yarn and the terry yarn, but also does not interfere with the terry yarn to cause terry loops. After repeated practice, the angle is controlled at 30 degrees, so that the movement of the sinker can better cooperate with the knitting needles, and the straight strips and squares of the fabrics are not exposed and feel soft. The tiger's mouth formed by the inclined plane from the throat 3 to the root of the nose 4 must be tilted into an arc to ensure smoothness.

[0023] In weaving, the cooperation between the knitting needle and the sinker 5 is crucial. Figure 3 From the movement curve of the middle sinker and the knitting needle, it can be seen that the sinker has two large advances, commonly known as peak 1 and peak 2. The radial position of the sinker triangle in these two advances is analyzed below (the distance between the throat and the needle back line can be used to reflect the amount of advance of the sinker). Peak 1: The sinker 5 advances forward, so that the ground yarn 7 is placed at the inner point of the needle hook, close to the needle bar and the inner side of the terry yarn 8, so that the ground yarn 7 and the terry yarn 8 are in the correct relative position. When the sinker 5 advances further forward, the shoulder of the sinker 5 will be tightened and the terry yarn in the previous horizontal row will be arranged, but it cannot be arranged too much, otherwise the terry yarn will be broken or damaged. The existing No. 0 sinker has no throat grip, and the position of the ground yarn 7 and the terry yarn 8 will change, resulting in bottom exposure; in addition, when the gripping force of the sinker 5 and the pressure of pushing out the coil are too small, it is easy to produce insufficient back loops, resulting in collection loop defects on the fabric. The main reason for this problem is that the root of the nose of the piece forms a small loop of terry yarn at the peak 1; the No. 0 sinker in this scheme retains the throat of the piece, which can well control the relative position of the ground yarn and the terry yarn. The root of the nose of the piece is inclined from the upper right of the throat of the piece. The terry yarn will not form a loop at this position but will form a flat needle base cloth together with the ground yarn. The sinkers purchased on the market do not leave a tiger's mouth (that is, the arc surface formed by the concave part of the throat of the piece). At this time, the padding angle of the ground yarn and the terry yarn cannot be controlled, resulting in the bottom being exposed. Generally speaking, the sinker triangle 6 is adjusted so that the distance between the throat of the piece and the back of the needle is between 0.50 and 0.70 mm.

[0024] Peak 2: It is the key to weaving high-quality terry fabrics. By adjusting the coil to control the sinker triangle, the phenomenon of fabric exposure can be overcome. Generally speaking, it is more appropriate to make the throat of the sheet between 0.10 and 0.30 mm from the needle back. The No. 0 sinker purchased on the market is easy to cut the coil at the root of the sheet nose during the process of assisting the knitting needle to withdraw the loop and unsleeve when the peak 1 retreats to the peak 2, resulting in the bottom of the fabric being exposed, so that the grid is not clear and there is no grid effect. The No. 0 sinker in this scheme has a slope at the root of the sheet nose from the top of the throat to the upper right, and a certain height H is left at the throat. The H value is controlled between 0.5 and 0.8 mm. In this way, when the sinker advances, the slope can not destroy the terry in the previous horizontal row and play a role in finishing the previous horizontal row. Therefore, the angle of the slope is very critical, which not only assists the synchronous withdrawal of the ground yarn and the terry yarn, but also helps to finish the terry in the previous horizontal row. After repeated practice, the angle is controlled at 30 degrees, so that the movement of the sinker can better cooperate with the knitting needle, and the straight strips and squares of the fabric are not exposed and feel soft. The transition point from the tiger's mouth to the inclined plane must be inverted into an arc to ensure smoothness.

[0025] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A non-terry sinker on a terry knitting machine, characterized in that: The invention comprises a body (1), wherein the top front end of the body (1) has a straight section jaw (2), the rear end of the straight section jaw (2) has a throat (3), the upper rear side of the throat (3) has a nose root (4), the nose root (4) and the straight section jaw (2) form an inclination angle of 25 to 32 degrees, and the height of the throat (3) is between 0.5 and 0.8 mm; The throat (3) is an arc-shaped curved portion that is concave inwardly toward the rear side of the body (1); The transition between the throat (3) and the root (4) of the nose is rounded.

2. The non-terry sinker on a terry knitting machine according to claim 1, characterized in that: The blade nose root (4) and the straight blade jaw (2) form an inclination angle of 30°.

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