A swinging cloth guiding device for air-jet cord fabric loom

Abstract

The present invention discloses a swinging cloth guide device for a jet cord fabric loom, comprising a fixed cloth guide roller, a swinging cloth guide roller, a swing arm and a tension adjustment mechanism arranged on the wall panel of the loom, wherein the fixed cloth guide roller is arranged horizontally above and behind the winding roller of the loom, and its left and right ends are respectively connected to the crossbeam of the loom through a fixed support. The swinging cloth guide roller is relatively arranged above the fixed cloth guide roller, and its left and right ends are respectively movably connected to the two ends of the fixed cloth guide roller through a swing arm. There are two tension adjustment mechanisms, which are symmetrically arranged on the left and right wall panels of the loom, and each tension adjustment mechanism is respectively connected to the swing arm on the same side. The present invention uses the tension adjustment mechanism to move the position of the cloth fell backward, fold the weft yarn head into the cloth fell, and achieve the compact effect of the folded edge, which has the advantages of timely response and controllability, and the quality of the smooth edge weaving of the cord fabric is better and more stable, thereby improving the quality of the cord fabric and achieving continuous high-speed smooth edge weaving of the cord fabric.

Description

Technical Field

[0001] This invention relates to the field of textile machinery technology, specifically to a swing guide device for an air-jet curtain loom. Background Technology

[0002] Existing tire cord fabric looms are mostly pseudo-warp roller looms, controlling the fabric winding via an external take-up device. Tire cord fabric has a low weft density, a fast and uniform take-up speed, and a relatively large weft spacing, typically 1 weft yarn / cm. Tire cord fabric requires a folded-in edge, which involves folding back the end of the previous weft yarn as the next warp yarn opens. The closer the folded-in yarn end is to the preceding weft yarn, the better. Currently, due to the uniform take-up speed, the previous weft is already quite far from the weft opening when the folded-in edge is made, resulting in a large arc, a loose edge, and poor folding effect. Therefore, existing technology urgently needs further improvement and enhancement. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the present invention aims to provide a swing guide device for an air-jet cord fabric loom, which solves the problems of the existing cord fabric loom having a large distance between the folded edge and the previous weft yarn and a large arc, resulting in a loose and non-compact folded edge and poor folding effect.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0005] A swing guide device for an air-jet curtain fabric loom includes a fixed guide roller, a swing guide roller, a swing arm, and a tension adjustment mechanism mounted on the loom wall panel. The fixed guide roller is horizontally positioned above and behind the loom take-up roller, and its left and right ends are connected to the loom crossbeam via fixed supports.

[0006] The swing guide roller is positioned above the fixed guide roller, with its left and right ends respectively connected to the two ends of the fixed guide roller via a swing arm.

[0007] There are two tension adjustment mechanisms, symmetrically arranged on the left and right wall panels of the loom, and each tension adjustment mechanism is connected to the swing arm on the same side.

[0008] Furthermore, the fixed support is installed on the crossbeam of the loom, and the left and right ends of the fixed guide roller pass through the fixed support and are rotatably engaged with it.

[0009] Furthermore, two swing arms are symmetrically arranged on the outside of the fixed support, and the left and right ends of the fixed guide roller are inserted into the lower end of the swing arms, with the lower end of the swing arms rotatably connected to the end of the fixed guide roller.

[0010] The swing arm has a swing arm hole in the middle, and the two ends of the swing guide roller are respectively inserted into the two swing arm holes and rotate in coordination with the middle of the swing arm.

[0011] Furthermore, the tension adjustment mechanism includes an adjustment support, a tension adjustment plate, and a spring assembly. The adjustment support is vertically fixedly installed on the loom wall panel. The front end of the spring assembly is adjustablely and fixedly connected to the adjustment support, and its rear end is fixedly connected to the upper end of the swing arm.

[0012] Furthermore, the adjusting support has an elongated hole that extends horizontally and vertically, and the spring assembly includes a return spring and two spring rods, with the front and rear ends of the return spring respectively connected to the two spring rods.

[0013] The rear spring support rod is fixedly connected to the upper end of the swing arm, and the front spring support rod passes through the elongated hole and is fixedly connected to the adjusting support.

[0014] Furthermore, the tension adjusting plate is fixedly installed at the rear end of the adjusting support, and the spring support rod located on the front side is connected to the tension adjusting plate through a screw.

[0015] The tension adjustment plate has a through hole, and the screw is located in the through hole. Its end extends into the bolt hole of the front spring support rod and is threadedly connected to the front spring support rod.

[0016] Furthermore, an elastic limiting block is provided on the rear side of the adjusting support. The elastic limiting block is located between the adjusting support and the swing arm, and its front side is fixedly connected to the rear end of the adjusting support.

[0017] Furthermore, both the fixed guide roller and the oscillating guide roller are arranged parallel to each other with the loom take-up roller, and both the fixed guide roller and the oscillating guide roller are hollow round rollers.

[0018] By adopting the above technical solution, the beneficial technical effects of this invention are as follows: During normal weaving, the yarn tension increases after the weft opening, and the yarn will stretch backward to the return spring. During hemming, the position of the previous weft yarn moves forward, and the hemming device folds the weft yarn end into the weft opening closer to the previous weft yarn, achieving a compact hemmed edge. This invention has the advantages of timely response and controllability, resulting in better and more stable quality of smooth hemmed curtain fabric, improving the quality of the curtain fabric, and realizing continuous high-speed smooth hemmed curtain fabric weaving. Attached Figure Description

[0019] Figure 1 This is a schematic diagram illustrating the structural principle of a swing guide device for an air-jet curtain loom according to the present invention.

[0020] Figure 2 yes Figure 1 The schematic diagram of a certain part shows the spring assembly.

[0021] Figure 3 This is a schematic diagram of the main structure of a swing guide device for a jet-jet curtain loom according to the present invention.

[0022] Figure 4 yes Figure 3 A structural cross-sectional view of the present invention from the AA viewpoint. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings:

[0024] Combination Figures 1 to 4 A swing guide device for a jet-jet curtain fabric loom includes a fixed guide roller 1, a swing guide roller 2, a swing arm 8, and a tension adjustment mechanism mounted on the loom wall panel. The fixed guide roller 1 is horizontally positioned above and behind the loom take-up roller 10 and is arranged parallel to the loom take-up roller 10. The left and right ends of the fixed guide roller 1 are respectively connected to the crossbeam of the loom through a fixed support 9.

[0025] Specifically, the fixed support 9 is fixedly installed on the crossbeam of the loom by bolts. The left and right ends of the crossbeam are respectively bolted to the left and right wall plates of the loom. The left and right ends of the fixed guide roller 1 pass through the fixed support 9 and rotate with it. The two fixed supports 9 provide rigid support for the fixed guide roller 1.

[0026] The oscillating guide roller 2 is arranged parallel to the fixed guide roller 1 above it, and its left and right ends are movably connected to the two ends of the fixed guide roller 1 through a swing arm 8. The fixed guide roller 1 and the oscillating guide roller 2 are arranged parallel to the loom take-up roller 10. The fixed guide roller 1 and the oscillating guide roller 2 are hollow circular rollers.

[0027] Two swing arms 8 are symmetrically arranged on the outside of the fixed support 9. The left and right ends of the fixed guide roller 1 are inserted into the lower end of the swing arm 8. The lower end of the swing arm 8 is rotatably connected to the end of the fixed guide roller 1 through a bearing. The swing arm 8 swings back and forth around the axis of the fixed guide roller 1.

[0028] The swing arm 8 has a swing arm hole in the middle. The two ends of the swing guide roller 2 are respectively inserted into the two swing arm holes and rotate with the middle of the swing arm 8 through the bearing. The two swing arms 8 swing back and forth synchronously around the axis of the fixed guide roller 1 to realize the back and forth movement of the swing guide roller 2.

[0029] There are two tension adjustment mechanisms, symmetrically arranged on the left and right wall panels of the loom. The tension adjustment mechanisms are located in front of the swing arm 8, and the rear of each mechanism is connected to the swing arm 8 on the same side. Each tension adjustment mechanism includes an adjusting support 5, a tension adjusting plate 6, and a spring assembly. The adjusting support 5 is vertically fixed to the loom wall panel. The front end of the spring assembly is adjustablely and fixedly connected to the adjusting support 5, and its rear end is fixedly connected to the upper end of the swing arm 8. The tension exerted by the spring assembly on the swing arm 8 is balanced with the warp tension on the oscillating guide roller 2.

[0030] The adjusting support 5 has an elongated hole 51 that extends horizontally and vertically. The tension adjustment mechanism includes two spring assemblies arranged one above the other. Specifically, the spring assembly includes a return spring 31 and two spring rods 32. The front and rear ends of the return spring 31 are respectively connected to the two spring rods 32. Each adjusting support 5 has two elongated holes 51.

[0031] The rear spring support rod 32 is fixedly connected to the upper end of the swing arm 8. The front spring support rod 32 passes through the corresponding elongated hole 51 and is fixedly connected to the adjusting support 5 by nuts and washers. After loosening the nuts and washers, the front spring support rod 32 can move back and forth in the elongated hole 51 to adjust the fixed position of the front spring support rod 32 on the adjusting support 5, thereby adjusting the elastic force of the return spring 31.

[0032] The tension adjusting plate 6 is fixedly installed at the rear end of the adjusting support 5, and the spring support rod 32 located on the front side is connected to the tension adjusting plate 6 via a screw 4. The tension adjusting plate 6 has a through hole 61, and the screw 4 is located in the through hole 61, with its end extending into the bolt hole 321 of the spring support rod 32 on the front side, and is threadedly connected to the spring support rod 32 on the front side. After the return spring 31 and the spring support rod 32 are assembled, they are installed on the adjusting support 5. When the loom is leveled, after the yarn rises to the required tension, the return spring 31 is stretched, and the tension of the return spring 31 is adjusted to the correct position via the screw 4 on the tension adjusting plate 6.

[0033] Using a wrench to turn the screw head of screw 4, screw 4 rotates in the bolt hole 321 of spring support rod 32, which can drive spring support rod 32 to move back and forth, adjust the position of spring support rod 32 in the elongated hole 51, and thus realize the tension of the return spring 31 on the swing guide roller 2. After the spring support rod 32 is adjusted to the position, the spring support rod 32 is locked and fixed on the adjusting support 5 by nuts and washers.

[0034] An elastic limiting block 7 is provided on the rear side of the adjusting support 5. The elastic limiting block 7 is made of rubber and is located between the adjusting support 5 and the swing arm 8. Its front side is fixedly connected to the rear end of the adjusting support 5. The function of the elastic limiting block 7 is to protect the swing arm 8.

[0035] When the loom is level, the yarn tension reaches the required level, and the return spring 3 stretches. The position of the return spring 3 is adjusted to the required position via the tension adjusting plate 6, and the swing arm and the elastic limit block are separated by an appropriate distance. During normal weaving, after the previous weft beat-up is completed, the loom weft opening gradually opens. The active warp release mechanism swings the loom back beam backward, pulling the warp yarn at the weft opening backward, aligning it with the position of the warp yarn fed from the warp beam by the warp feed motion. The uniform forward take-up motion tightens the warp yarn. At this time, the swing guide roller 2 swings towards the weft opening under the action of the warp yarn tension, maintaining the relative stability of the warp yarn tension. Since the warp yarn at the weft opening is relatively stationary at this time, the folding device folds the weft yarn end into the weft opening. The distance between the weft yarn end and the preceding weft yarn is relatively close, achieving a compact folded edge effect.

[0036] After the second weft insertion is completed, the loom closes its weft insertion point, the active warp release back beam swings forward, the warp yarns move forward rapidly, and the oscillating guide roller 2 swings away from the weft insertion point to maintain relatively stable warp yarn tension. This cycle repeats, allowing the loom to operate at high speed, achieving continuous high-speed smooth-edge weaving of the tire cord fabric.

[0037] For any parts not mentioned in this invention, existing technologies can be used or referenced.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0040] Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A swing cloth guiding device for an air jet cord fabric loom, characterized in that: It includes a fixed cloth guide roller, a swing cloth guide roller, a swing arm and a tension adjustment mechanism arranged on the loom wall plate. The fixed cloth guide roller is arranged horizontally on the upper rear of the loom take-up roller, and its left and right ends are respectively connected to the crossbeam of the loom through fixed supports; The swing cloth guide roller is relatively arranged above the fixed cloth guide roller, and its left and right ends are movably connected to the two ends of the fixed cloth guide roller through a swing arm respectively; There are two tension adjustment mechanisms, which are symmetrically arranged on the left and right wall panels of the loom and located in front of the swing arm, and each tension adjustment mechanism is respectively connected to the swing arm on the same side; the tension adjustment mechanism includes an adjustment support, a tension adjustment plate and a spring assembly, the adjustment support is vertically fixedly installed on the loom wall panel, the front end of the spring assembly is adjustably fixedly connected to the adjustment support, and the rear end thereof is fixedly connected to the upper end of the swing arm; The adjusting support is provided with an oblong hole which passes through left and right and extends front and back. The spring assembly comprises a return spring and two spring support rods. The front and rear ends of the return spring are respectively connected to the two spring support rods. The rear spring support rod is fixedly connected to the upper end of the swing arm, and the front spring support rod passes through the oblong hole and is fixedly connected to the adjusting support by a nut and a gasket. After loosening the nut and the gasket, the front spring support rod can move back and forth in the oblong hole. The fixed position of the front spring support rod on the adjusting support is adjusted to adjust the elastic force of the return spring.

2. The swing cloth guiding device of the air jet cord fabric loom according to claim 1, characterized in that: The fixed support is installed on the crossbeam of the loom, and the left and right ends of the fixed cloth guide roller pass through the fixed support and are rotatably matched with the fixed support.

3. The swing cloth guiding device of the air jet cord fabric loom according to claim 1 or 2, characterized in that: The two swing arms are symmetrically arranged on the outside of the fixed support, the left and right ends of the fixed cloth guide roller penetrate into the lower end of the swing arm, and the lower end of the swing arm is rotatably connected with the end of the fixed cloth guide roller; A swing arm hole is provided in the middle of the swing arm, and the two ends of the swing cloth guide roller are respectively inserted into the two swing arm holes and are rotatably matched with the middle of the swing arm.

4. The swing cloth guiding device of the air jet cord fabric loom according to claim 1, characterized in that: The tension adjustment plate is fixedly mounted on the rear end of the adjustment support, and the spring support rod located on the front side is connected to the tension adjustment plate through a screw rod; The tension adjustment plate is provided with a through hole, the screw rod is located in the through hole, the end of the screw rod extends into the bolt hole of the front spring support rod and is threadedly connected with the front spring support rod.

5. The swing cloth guiding device of the air jet cord fabric loom according to claim 1, characterized in that: An elastic limit block is arranged at the rear side of the adjustment support, the elastic limit block is located between the adjustment support and the swing arm, and the front side of the elastic limit block is fixedly connected to the rear end of the adjustment support.

6. The swing cloth guiding device of the air jet cord fabric loom according to claim 1, characterized in that: The fixed cloth guide roller and the swing cloth guide roller are both arranged relatively parallel to the loom take-up roller, and the fixed cloth guide roller and the swing cloth guide roller are round rollers with hollow structures.

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