An industrial silk weaving weft insertion frame

Abstract

This utility model discloses an industrial yarn weaving weft insertion frame, including a frame body. A guide rod is horizontally mounted on the frame body via a mounting base. A stop block is sleeved at the front end of the guide rod, and the stop block is detachably and fixedly connected to the guide rod. A limiting block is movably sleeved at the rear end of the guide rod. A spring is provided between the limiting block and the mounting base, and the spring is sleeved on the guide rod, with one end abutting against the mounting base and the other end abutting against the limiting block. The yarn bobbin is sleeved on the guide rod between the limiting block and the stop block, and both ends are respectively abutting against the limiting block and the stop block. The limiting block and the stop block form a limiting and fixing effect on the yarn bobbin, preventing excessive unwinding tension during yarn unwinding, which could cause the yarn bobbin to move and lead to uneven yarn tension and yarn breakage.

Description

Technical Field

[0001] This utility model belongs to the field of textile yarn frame technology, specifically relating to an industrial yarn weft insertion frame. Background Technology

[0002] Elastic weft yarn is an industrial yarn with high elasticity and good stretchability, widely used in clothing, medical, industrial, and tire manufacturing fields. When elastic weft yarn is used as the weft material of radial tire cord fabric, it is manufactured by unwinding from the yarn frame and inserting the weft through a rapier loom.

[0003] To shorten the traction distance, current yarn frames are set on one side of the loom and traditional guide rods are used to directly guide the weft. However, due to the simple structure of the guide rods and the large unwinding tension of elastic weft yarns, the bobbin is prone to shaking during unwinding, resulting in unstable unwinding tension, uneven tension of the weft yarn, and a tendency to break yarns. Utility Model Content

[0004] The purpose of this invention is to provide an industrial yarn weft insertion frame to solve the problem of uneven tension caused by yarn bobbin swaying during unwinding of elastic weft yarns, which leads to yarn breakage.

[0005] The technical solution adopted by this utility model is an industrial silk weaving weft insertion frame, including a frame body. A guide rod is horizontally installed on the frame body via a mounting base. A stop block is sleeved at the front end of the guide rod. The stop block and the guide rod are detachably and fixedly connected. A limiting block is movably sleeved at the rear end of the guide rod. A spring is provided between the limiting block and the mounting base. The spring is sleeved on the guide rod, with one end abutting against the mounting base and the other end abutting against the limiting block. The yarn bobbin is sleeved on the guide rod between the limiting block and the stop block, and both ends are respectively abutting against the limiting block and the stop block.

[0006] Furthermore, the aforementioned limiting block has a Y-shaped cross-section and a trapezoidal longitudinal section, with the outer diameter of the limiting block gradually decreasing from the rear end to the front end.

[0007] Furthermore, the cross-sectional diameter of the front end of the aforementioned limiting block is smaller than the inner diameter of the yarn tube, while the cross-sectional diameter of the rear end is larger than the inner diameter of the yarn tube.

[0008] Furthermore, a positioning rubber pad is provided between the aforementioned stop block and the yarn guide rod. The stop block is rubbed against the yarn guide rod through the positioning rubber pad. A pad is also fitted on the yarn guide rod. The pad is made of rubber and is located at the front end of the stop block, in contact with the yarn bobbin.

[0009] Furthermore, the yarn frame body is provided with two yarn guide rods at the same height to install yarn bobbins. The two yarn bobbins have the same yarn output direction and a yarn baffle is provided below the yarn bobbins. A yarn end retainer is provided near the edge of the yarn baffle between the two yarn bobbins. The yarn end retainer includes a base with a yarn guide hole and a tension plate connected to the base in an elastic shape.

[0010] Furthermore, dust collection hoods are provided above the yarn frame body and the loom, respectively. The top of the dust collection hood is connected to a negative pressure pipe through a branch pipe. The negative pressure pipe is connected to a negative pressure generator and the outlet is connected to a dust collection bag. The dust collection hood is trapezoidal with a smaller top and a larger bottom. Multiple dustproof curtains are connected to the bottom of the dust collection hoods above the yarn frame body and the loom head, respectively. The multiple dustproof curtains are suspended with their bottom ends close to the lower part of the yarn frame body.

[0011] Compared with the prior art, the beneficial effects of this utility model are that by setting a stop block and a limiting block at the front and rear ends of the yarn guide rod respectively, and the limiting block is elastically connected to the mounting base through a spring, the yarn bobbin is placed on the yarn guide rod between the limiting block and the stop block. The limiting block and the stop block form a limiting and fixing effect on the yarn bobbin, preventing the yarn bobbin from moving due to excessive unwinding tension during yarn unwinding, which would lead to uneven yarn tension and yarn breakage. Among them, the limiting block is connected to the mounting base through a spring. After the yarn bobbin is placed, the spring is in a compressed state, which is suitable for use with yarn bobbins of different specifications, and keeps the limiting block always applying pressure to the yarn bobbin to maintain the stability of the yarn bobbin. Attached Figure Description

[0012] Figure 1 Schematic diagram of a weft insertion frame structure for industrial silk weaving; Figure 2 This is a schematic diagram of the yarn guide rod structure; Figure 3 This is the left view of the limiting block; Figure 4 A schematic diagram of assembling a dust collection hood for an industrial silk weaving weft insertion frame. Detailed Implementation

[0013] The present invention will be further explained below with reference to the accompanying drawings to enable those skilled in the art to better understand it.

[0014] Example 1 like Figure 1-4As shown, an industrial silk weaving weft insertion frame includes a frame body. A guide rod 6 is horizontally mounted on the frame body via a mounting base 5. A stop block 601 is sleeved at the front end of the guide rod 6. The stop block 601 is detachably and fixedly connected to the guide rod 6 to facilitate the placement of yarn bobbins after disassembly. A limiting block 602 is movably sleeved at the rear of the guide rod 6. A spring 603 is provided between the limiting block 602 and the mounting base 5. The spring 603 is sleeved on the guide rod 6, with one end abutting against the mounting base 5 and the other end abutting against the limiting block 602. A yarn bobbin 7 is sleeved on the guide rod 6 between the limiting block 602 and the stop block 601, with both ends abutting against the limiting block 602 and the stop block 601 respectively. The spring 603 is in a compressed state. The limit block and stop block are used to limit and fix the yarn bobbin, preventing excessive unwinding tension during yarn unwinding, which could cause the yarn bobbin to shake, resulting in uneven yarn tension and yarn breakage. The limit block is connected to the mounting base by a spring. After the yarn bobbin is placed, the spring is in a compressed state. It is suitable for use with yarn bobbins of different specifications and keeps the limit block always applying pressure to the yarn bobbin to maintain its stability.

[0015] Furthermore, the aforementioned limiting block 602 has a Y-shaped cross-section and a trapezoidal longitudinal section. The outer diameter of the limiting block 602 gradually decreases from the rear end to the front end. The diameter of the front end of the limiting block 602 is smaller than the inner diameter of the yarn tube, while the diameter of the rear end is larger than the inner diameter of the yarn tube. The truss surface of the limiting block gradually decreases from the rear end to the front end. The front end of the limiting block can be inserted into the yarn tube. The Y-shaped cross-section of the limiting block 602 supports the yarn tube with three outer ends, providing stability. Moreover, the outer diameter of the limiting block in contact with the yarn tube gradually changes, which can accommodate yarn tubes of different specifications.

[0016] Furthermore, a positioning rubber pad 604 is provided between the aforementioned stop block 601 and the yarn guide rod 6. The stop block 601 is frictionally connected to the yarn guide rod 6 through the positioning rubber pad 604, which facilitates the removal of the stop block 601 to install the yarn bobbin 7. A pad 605 is also fitted on the yarn guide rod 6. The pad 605 is made of rubber and is located at the front end of the stop block 601, abutting against the yarn bobbin 7. The outer diameter of the pad is similar to the inner diameter of the yarn bobbin. The pad directly contacts the yarn bobbin, which helps to stabilize the yarn bobbin and avoids damage to the yarn bobbin.

[0017] The yarn frame body has two yarn guide rods 6 installed at the same height, one of which is a spare. The two yarn tubes 7 have the same yarn output direction and a yarn baffle 10 is provided below the yarn tubes. Near the edge of the yarn baffle 10, between the two yarn tubes, there is a thread end retainer 14. The thread end retainer 14 includes a base with a yarn guide hole. A tension plate is connected to the base with a spring. The thread end of the spare yarn tube is connected to the thread end of the yarn tube in use. The connector is locked on the retainer to prevent the spare yarn from falling off and affecting the weft insertion, causing yarn breakage and machine stoppage, thus improving production efficiency.

[0018] Because elastic weft yarns generate a lot of lint during unwinding, the lint enters the loom along with the yarn, which can easily cause yarn breakage and fabric defects, reducing quality. To solve this problem, dust hoods 15 are installed on the yarn frame body and the top of the loom. The top of the dust hood 15 is connected to a negative pressure pipe 17 through a branch pipe 16. The negative pressure pipe 17 is connected to a negative pressure generator and its outlet is connected to a dust bag. The dust hood 15 is trapezoidal with a smaller top and a larger bottom. Multiple dustproof curtains 18 are connected to the bottom of the dust hood 15 above the yarn frame body and the loom head. The multiple dustproof curtains 18 are suspended with their bottom ends close to the lower part of the yarn frame body.

[0019] The yarn frame body includes a base frame 1, which is T-shaped and consists of a crossbeam 101 and a longitudinal beam 102 perpendicularly positioned in the middle of the crossbeam 101. A first column 2, a second column 3, and a third column 4 are erected at the two ends of the crossbeam 101 and the outer ends of the longitudinal beam 102, respectively. Mounting seats 5 are provided on both the first column 2 and the second column 3. A yarn guide rod 6 is connected to one side of each mounting seat 5, extending towards the third column 4. Yarn bobbins 7 are fitted onto the yarn guide rod 6. Two third columns 4 are provided, with a yarn guide plate 8 positioned between the two columns corresponding to the yarn guide rod 6. A yarn guide hole 9 is opened in the center of the yarn guide plate 8 corresponding to the yarn exit of the yarn bobbin 7, and a ceramic eyelet is installed in the yarn guide hole 9. Yarn bobbins 7 are placed on the first column 2 and the second column 3, with the yarn exit directions of the two yarn bobbins 7 being consistent. To further reduce the impact of tension fluctuations caused by the yarn unwinding air ring, a yarn baffle 10 is provided between the first column 2, the second column 3, and the third column 4. The yarn baffle 10 is located 10-15cm below the yarn bobbin 7. At least two sets of mounting base 5, yarn guide plate 8, and yarn baffle 10 are provided, spaced apart along the height direction of the first column 2, the second column 3, and the third column 4. A support rod 12 is also installed on the third column 4 through a connecting block 11. A tension wheel 13 is installed at the end of the support rod 12 to facilitate yarn bobbin replacement and ensure continuous production. In cases where the tension is still uneven, the yarn passing through the yarn guide hole 9 is pulled by the tension wheel 13 to further improve the weft insertion stability.

[0020] The mounting base 5 has a central circular hole, through which it slides onto the first column 2 or the second column 3. A threaded hole is formed on one side of the mounting base 5, penetrating the circular hole. A screw is used to securely connect the mounting base to the first column 2 or the second column 3 through the threaded hole. The position of the mounting base 5 is adjusted according to the yarn bobbin specifications to change the distance between the yarn bobbin 7 and the yarn baffle 9, ensuring the yarn baffle functions effectively. To facilitate the movement of the yarn frame, the ends of the aforementioned crossbeam 101 and longitudinal beam 102, located below the first column 2, the second column 3, and the third column 4, are connected to casters via wheel frames.

[0021] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from its design spirit and principles should fall within the protection scope defined by the claims of the present invention.

Claims

1. An industrial silk weaving weft insertion frame, comprising a frame body, wherein a guide rod is horizontally mounted on the frame body via a mounting base, characterized in that, The front end of the yarn guide rod is fitted with a stop block, which is detachably and fixedly connected to the yarn guide rod. The rear end of the yarn guide rod is movably fitted with a limiting block. A spring is provided between the limiting block and the mounting base. The spring is fitted on the yarn guide rod, with one end abutting against the mounting base and the other end abutting against the limiting block. The yarn bobbin is fitted on the yarn guide rod between the limiting block and the stop block, and both ends are respectively connected to the limiting block and the stop block.

2. The industrial silk weaving weft insertion frame according to claim 1, characterized in that, The limiting block has a Y-shaped cross-section and a trapezoidal longitudinal section. The outer diameter of the limiting block gradually decreases from the rear end to the front end.

3. The industrial silk weaving weft insertion frame according to claim 2, characterized in that, The cross-sectional diameter of the front end of the limiting block is smaller than the inner diameter of the yarn tube, and the cross-sectional diameter of the rear end is larger than the inner diameter of the yarn tube.

4. The industrial silk weaving weft insertion frame according to claim 1, characterized in that, A positioning rubber pad is provided between the stop block and the yarn guide rod. The stop block is rubbed with the yarn guide rod through the positioning rubber pad. A pad is also fitted on the yarn guide rod. The pad is made of rubber and is located at the front end of the stop block and in contact with the yarn bobbin.

5. The industrial silk weaving weft insertion frame according to claim 1, characterized in that, The yarn frame body has two yarn guide rods installed at the same height for the yarn bobbins. The two yarn bobbins have the same yarn output direction and a yarn baffle is provided below the yarn bobbins. Near the edge of the yarn baffle, between the two yarn bobbins, there is a thread end fixer. The thread end fixer includes a base with a yarn guide hole and a tension plate connected to the base in an elastic shape.

6. The industrial silk weaving weft insertion frame according to claim 1, characterized in that, The yarn frame body and the loom are respectively equipped with dust collection hoods. The top of the dust collection hood is connected to a negative pressure pipe through a branch pipe. The negative pressure pipe is connected to a negative pressure generator and the outlet is connected to a dust collection bag. The dust collection hood is trapezoidal with a smaller top and a larger bottom. Multiple dustproof curtains are connected to the bottom of the dust collection hoods above the yarn frame body and the loom head. The multiple dustproof curtains are suspended with their bottom ends close to the lower part of the yarn frame body.

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