A pre-production sample loom for textile fabrics

Abstract

The present invention relates to the field of loom production technology, specifically to a pre-production sample loom for textile fabrics, comprising a sample loom body, a yarn guide being provided at an upper end of one side of the sample loom body, and a yarn guiding mechanism being provided on a side of the sample loom body close to the yarn guide. By adopting an optimized design of the yarn guiding mechanism, the stability of the yarn guiding operation of the sample loom is achieved, and by the cooperation of an air jet assembly, a yarn storage assembly, and a yarn threading assembly, the yarn is sprayed and guided by a high-speed airflow at the center, which can increase the bending radius during yarn guidance, reduce the bending curvature of the yarn, and reduce wear. Moreover, by the design of a yarn tensioner and a yarn scrap collector, the yarn is kept from suddenly relaxing when weft insertion stops, thereby avoiding yarn breakage and weft skipping, and the efficiency and quality of textile fabric sample production can be improved during weft insertion.

Description

Technical Field

[0001] The invention relates to the technical field of loom production, in particular to a pre-production sample loom for textile fabrics. Background Art

[0002] In the textile industry, weaving fabric samples is a crucial step. It not only previews the final product, but also helps designers and manufacturers adjust and confirm fabric patterns, structures, colors, and other aspects before formal production, ensuring that the quality of mass-produced products meets design requirements. On the loom, weft insertion is the process of introducing the weft yarn into the shed formed by the warp yarn openings. After the shed is formed, the weft yarn is guided through the shed by a weft insertion carrier or medium such as a shuttle, interlacing it with the warp yarn to form the fabric. Air jet weft insertion uses a jet of compressed air to pull the weft yarn through the shed.

[0003] In the prior art, a feeding device for a rapier loom, such as that disclosed in publication number CN218262963U, comprises a frame, a support rod horizontally mounted on the frame for placing a weft feeder, and a first mounting seat mounted on the support rod for mounting the weft feeder. The frame is also provided with a distance adjustment assembly capable of adjusting the horizontal distance and an angle adjustment assembly capable of vertically swinging the weft feeder about the first mounting seat. The frame is also provided with a placement plate for placing a weft coil and a guide mechanism mounted on the frame for guiding the weft from the weft coil into the weft feeder. By aligning the outlets of each weft feeder with the guide holes on the guide plate, the weft is less likely to be deflected when it passes from the weft feeder to the guide plate. Furthermore, the guide mechanism of the weft feeder minimizes the weft deflection when it passes from the weft coil to the weft feeder, thereby minimizing weft deflection during the feeding process of the rapier loom.

[0004] In order to solve the problem of excessive deflection of the weft yarn when it enters the guide plate from the weft accumulator, the existing technology adopts a feeding method with a guide mechanism. However, in actual use, once the weft insertion is stopped, the weft yarn at the rear end of the weft accumulator relaxes rapidly, affecting the efficiency of subsequent yarn insertion, and the yarn is easily curled at the end of the nozzle, causing the nozzle to be blocked.

[0005] Therefore, the present invention proposes a pre-production sample loom for textile fabrics to solve the problem that once the traditional loom stops inserting the weft, the weft yarn at the rear end of the weft storage device relaxes rapidly, affecting the efficiency of subsequent yarn insertion. The yarn that stops immediately can be quickly supported to avoid the yarn curling or relaxation, ensuring the stable supply of yarn, and also meeting the auxiliary cleaning of surface dust during yarn guiding. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a pre-production sample loom for textile fabrics to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a pre-production sample loom for textile fabrics, comprising a sample loom body, a yarn guide being provided at the upper end of one side of the sample loom body, a yarn guiding mechanism being provided at the side of the sample loom body close to the yarn guide, the yarn guiding mechanism comprising a support unit and an air-jet weft insertion unit, the support unit comprising a movable seat, a first mounting frame and a second mounting frame, the air-jet weft insertion unit comprising an air jet assembly, a yarn storage assembly and a yarn threading assembly, the air jet assembly comprising a fixed sleeve and a limiting ring plate, the yarn storage assembly being arranged on one side of the limiting ring plate, the yarn threading assembly being arranged on the outside of the yarn storage assembly, the yarn storage assembly comprising a mounting circular plate, a yarn winding plate and a center limiting cylinder, a yarn tensioning member being provided on the inner side of the center limiting cylinder, a yarn scrap collecting member being provided at the end of the center limiting cylinder away from the mounting circular plate, the yarn scrap collecting member comprising a conical wind hood and an air guide, and the air guide comprising a center air cylinder.

[0008] Preferably, a hollow shaft fan is fixedly installed on the inner side of the fixed sleeve, and a guide cover is provided at the input end of the hollow shaft fan. The end of the fixed sleeve away from the guide cover is fixedly connected to the outer surface of the limiting ring plate, the inner surface of the limiting ring plate is movably connected to the outer surface of the mounting circular plate, the outer surface of the mounting circular plate is fixedly connected to a yarn winding plate, and the outer surface of one end of the center limiting cylinder is fixedly connected to the outer side surface of the mounting circular plate.

[0009] Preferably, the yarn tensioner includes a motor and a central jet cylinder, the central jet cylinder is rotatably mounted on the inner side of the mounting circular plate, the motor is fixedly mounted on one side of the mounting circular plate, a driving gear is fixedly connected to the output shaft of the motor, the outer surface of the driving gear is meshed and rotatably engaged with a gear ring, the central inner surface of the gear ring is fixedly connected to the outer surface of one end of the central jet cylinder, the outer surface of the central jet cylinder is rotatably connected to a rotating ring, connecting rods are fixedly connected on both sides of the rotating ring, the other end of the connecting rod is fixedly connected to the inner wall of the central limiting cylinder, and a movable arm rod is hingedly mounted on the outer surface of the rotating ring.

[0010] Preferably, the outer surface of the central jet cylinder is threadedly connected to a threaded ring, and the outer surface of the threaded ring is hingedly installed with a movable arm rod 2, the other end of the movable arm rod 2 is movably connected to the movable arm rod 1, and the end of the movable arm rod 2 away from the threaded ring is fixedly connected to a yarn expansion plate.

[0011] Preferably, a fixing ring is fixedly mounted on the outer side of one end of the center limiting cylinder, the outer surface of the fixing ring is movably engaged with the inner wall of the mounting circular plate, and a reserved groove is provided on the inner wall of the outer ring of the center limiting cylinder.

[0012] Preferably, an anti-conical bucket is fixedly installed on the inner ring surface of the conical wind hood, and arc-shaped grooves are evenly provided on the inner wall of the outer ring of the anti-conical bucket. The inner surface of the anti-conical bucket is fixedly connected to the outer surface of the central wind tube, and the outer surface of one end of the central wind tube is rotatably connected to the inner wall of the central jet tube. The other end of the central wind tube is fixedly connected to a wind gathering bucket, and a side groove is provided on the inner wall of the central wind tube close to the wind gathering bucket.

[0013] Preferably, a hook plate is fixedly installed on the outer surface of one end of the conical wind hood close to the center limit cylinder, a reserved groove is provided on the inner wall of the center limit cylinder, a hook groove is provided on the inner wall of the reserved groove, and the outer surface of the hook plate is movably connected to the reserved groove and the inner wall of the hook groove.

[0014] Preferably, reinforcing ribs are provided between the conical wind hood and the anti-conical bucket, and the reinforcing ribs are composed of long ribs and short ribs. The long ribs are fixedly mounted on the inner surface of the conical wind hood, and the short ribs are fixedly mounted on the outer surface of the anti-conical bucket. Each group of the long ribs and the short ribs are integrally formed, and an intercepting piece is provided between the long ribs and the short ribs.

[0015] Preferably, the intercepting member includes an inner folding strip and an intercepting net, both ends of the inner folding strip are fixedly connected to the inner side of the reinforcing rib respectively, and a retention groove is provided between the inner folding strip and the intercepting net.

[0016] Preferably, the yarn threading assembly includes a yarn threading cone ring, a yarn threading eye is opened on the inner wall of one end of the yarn threading cone ring, a curved yarn guide plate is fixedly installed on the inner ring surface of the yarn threading cone ring, a connecting block is fixedly installed on the upper end of the yarn threading cone ring, and the upper end of the connecting block is fixedly connected to a connecting plate, and the connecting plate is detachably installed on the upper side of the limiting ring plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention proposes a pre-production sample loom for textile fabrics, which achieves the stability of the yarn guiding operation of the sample loom by adopting an optimized design of the yarn guiding mechanism. Through the cooperation of the jet assembly, the yarn storage assembly and the yarn threading assembly, the central high-speed airflow is used to spray and guide the yarn, which can increase the bending radius during yarn guidance, reduce the bending curvature of the yarn, and reduce wear. The design of the yarn tensioner and the yarn scrap collecting component can not only maintain the sudden relaxation of the yarn when the weft insertion is stopped, avoiding yarn breakage and weft skipping, but also achieve the auxiliary cleaning of the dust on the yarn surface by relying on the central high-speed airflow during the weft insertion operation, thereby improving the efficiency and quality of textile fabric sample production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1This is a schematic diagram of the front three-dimensional structure of the sample loom body of the present invention;

[0020] Figure 2 This is a schematic diagram of the back three-dimensional structure of the sample loom body of the present invention;

[0021] Figure 3 For the present invention Figure 1 A schematic diagram of the enlarged structure at point A;

[0022] Figure 4 Schematic diagram of the three-dimensional structure of the yarn drawing mechanism of the present invention;

[0023] Figure 5 Schematic diagram of the disassembled structure of a single-group air-jet weft insertion unit of the present invention;

[0024] Figure 6 Schematic diagram of a half-section structure of a single-group air-jet weft insertion unit of the present invention;

[0025] Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure at point B;

[0026] Figure 8 For the present invention Figure 6 Schematic diagram of the enlarged structure at C;

[0027] Figure 9 For the present invention Figure 6 A schematic diagram of the structure at D of FIG.

[0028] Figure 10 Schematic diagram of the partial decomposition structure of a single-group air-jet weft insertion unit of the present invention;

[0029] Figure 11 For the present invention Figure 10 A schematic diagram of the structure at E is enlarged;

[0030] Figure 12 Schematic diagram of the disassembled structure of the yarn tensioner and the center limiting cylinder of the present invention Figure 1 ;

[0031] Figure 13 For the present invention Figure 12 The enlarged structural diagram of F;

[0032] Figure 14 Schematic diagram of the disassembled structure of the yarn tensioner and the center limiting cylinder of the present invention Figure 2 ;

[0033] Figure 15 This is a schematic diagram of the disassembled structure of the yarn scrap collecting member and the air guide member of the present invention;

[0034] Figure 16It is a partial cross-sectional structural diagram of the conical wind hood and the central wind tube of the present invention;

[0035] Figure 17 It is a schematic diagram of the disassembled structure of the intercepting member of the present invention.

[0036] In the figure: 1. Sample loom body; 11. Yarn guide; 2. Yarn introduction mechanism; 21. Moving seat; 211. Support rod; 22. Mounting frame 1; 221. Yarn bobbin; 23. Mounting frame 2; 24. Air jet weft insertion unit; 241. Fixed sleeve; 2411. Air guide cover; 2412. Hollow shaft fan; 242. Limiting ring plate; 243. Mounting circular plate; 244. Yarn winding plate; 245. Center limiting cylinder; 2450. Reserved slot; 24501. Hooking slot; 2451. Fixed ring; 2431. Motor; 2432. Driving gear; 2433. Gear ring; 2434. Central jet tube; 2435, rotating ring; 2436, movable arm rod 1; 2437, threaded collar; 2438, movable arm rod 2; 2439, yarn expansion plate; 246, conical wind hood; 2460, hook plate; 2461, anti-cone bucket; 2462, reinforcing rib; 24620, bending groove; 2463, inner folding strip; 2464, intercepting net; 24640, retention groove; 247, central air tube; 2470, side groove; 2471, wind gathering bucket; 25, yarn threading cone ring; 250, yarn threading eye; 251, curved yarn guide plate; 252, connecting block; 253, connecting plate. DETAILED DESCRIPTION

[0037] In order to clearly and completely describe the objectives and technical solutions of the present invention and make its advantages more clearly understood, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] For example 1, please refer to Figure 1-17The present invention provides a technical solution: a pre-production sample loom for textile fabrics, comprising a sample loom body 1, a yarn guide 11 being provided at an upper end of one side of the sample loom body 1, a yarn introduction mechanism 2 being provided at a side of the sample loom body 1 close to the yarn guide 11, the yarn introduction mechanism 2 comprising a support unit and an air jet weft insertion unit 24, the support unit comprising a movable seat 21, a first mounting frame 22 and a second mounting frame 23, the air jet weft insertion unit 24 comprising an air jet assembly, a yarn storage assembly and a yarn threading assembly, the air jet assembly comprising a fixed sleeve 241 and a limiting ring plate 242, the yarn storage assembly is arranged on one side of the limiting ring plate 242, and the yarn threading assembly is arranged on the outside of the yarn storage assembly. The yarn storage assembly includes a mounting circular plate 243, a yarn winding plate 244 and a center limiting cylinder 245. A yarn tensioner is arranged on the inner side of the center limiting cylinder 245. A yarn scrap collecting member is arranged on the end of the center limiting cylinder 245 away from the mounting circular plate 243. The yarn scrap collecting member includes a conical wind cover 246 and an air guide member. The air guide member includes a center air cylinder 247; a hollow shaft fan 2412 is fixedly installed on the inner side of the fixed sleeve 241, and the hollow shaft The input end of the fan 2412 is provided with a deflector 2411, and the end of the fixed sleeve 241 away from the deflector 2411 is fixedly connected to the outer surface of the limiting ring plate 242, the inner surface of the limiting ring plate 242 is movably connected to the outer surface of the mounting circular plate 243, the outer surface of the mounting circular plate 243 is fixedly connected to the winding plate 244, and the outer surface of one end of the central limiting cylinder 245 is fixedly connected to the outer side surface of the mounting circular plate 243; the yarn threading assembly includes a yarn threading cone ring 25, and a yarn threading eye 250 is opened on the inner wall of one end of the yarn threading cone ring 25, A curved yarn guide plate 251 is fixedly mounted on the inner annular surface of the cone ring 25, a connecting block 252 is fixedly mounted on the upper end of the yarn threading cone ring 25, the upper end of the connecting block 252 is fixedly connected to a connecting plate 253, and the connecting plate 253 is detachably mounted on the upper side of the limiting ring plate 242; a support rod 211 is fixedly connected to the upper end of the movable seat 21, and a mounting frame 1 22 and a mounting frame 2 23 are fixedly connected to the outer surface of the support rod 211, a yarn bobbin 221 is rotatably mounted on the upper end of the mounting frame 1 22, and the air-jet weft insertion unit 24 is arranged on the inner side of the mounting frame 23;

[0039] In this embodiment, one end of the yarn is led out from the yarn bobbin 221, wound and stored on the surface of the yarn winding plate 244, and one end of the pulled yarn is passed through the yarn eye 250 in the center of the yarn threading cone ring 25, and then the yarn is passed through the appropriate yarn guide 11 at one time to complete the weft insertion and guiding of the loom. It is worth noting that before the yarn threading component, the yarn can be guided by the cooperation of the yarn storage component and the air jet component. At the same time, the air flow ejected by the hollow shaft fan 2412 is used to keep the yarn at the outlet of the yarn threading cone ring 25. The curved yarn guide plate 251 is installed on the inner side of the yarn threading cone ring 25 to reduce the hard friction between the yarn and the sharp surface, thereby avoiding wear of the yarn.

[0040] Example 2, refer to the attached Figure 1-17 On the basis of embodiment 1, in order to avoid the situation that the yarn on the winding plate 244 relaxes quickly when the weft insertion operation is stopped: the yarn tensioning member includes a motor 2431 and a central air-jet cylinder 2434, the central air-jet cylinder 2434 is rotatably mounted on the inner side of the mounting circular plate 243, the motor 2431 is fixedly mounted on one side of the mounting circular plate 243, a driving gear 2432 is fixedly connected to the output shaft of the motor 2431, the outer surface of the driving gear 2432 is meshed and rotatably engaged with a gear ring 2433, the central inner surface of the gear ring 2433 is fixedly connected to the outer surface of one end of the central air-jet cylinder 2434, the outer surface of the central air-jet cylinder 2434 is rotatably connected to a rotating ring 2435, and connecting rods are fixedly connected on both sides of the rotating ring 2435. The other end of the rod is fixedly connected to the inner wall of the center limiting cylinder 245, and a movable arm rod 1 2436 is hingedly installed on the outer surface of the rotating ring 2435; the outer surface of the center air-jet cylinder 2434 is threadedly connected to a threaded collar 2437, and a movable arm rod 2438 is hingedly installed on the outer surface of the threaded collar 2437. The other end of the movable arm rod 2438 is movably connected to the movable arm rod 1 2436, and the end of the movable arm rod 2438 away from the threaded collar 2437 is fixedly connected to the yarn-rising plate 2439; a fixing ring 2451 is fixedly installed on the outer side of one end of the center limiting cylinder 245, and the outer surface of the fixing ring 2451 is movably engaged with the inner wall of the mounting circular plate 243. A reserved groove 2450 is provided on the inner wall of the outer ring of the center limiting cylinder 245;

[0041] In this embodiment, when the weft insertion is stopped, the yarn tensioner responds quickly, and the motor 2431 is turned on, so that the driving gear 2432 rotates, and the gear ring 2433 drives the central air-jet cylinder 2434 to rotate synchronously. Under the limiting action of the thread adaptation, the threaded collar 2437 moves along the horizontal position of the central air-jet cylinder 2434. At this time, the angle of the movable arm 2438 and the movable arm 1 2436 changes, thereby driving the multiple groups of yarn-raising plates 2439 to perform synchronous diameter-changing activities, and quickly responding to the rapid tightening of the yarn wound on the winding plate 244 to avoid the yarn from loosening, thereby causing weft skipping or The situation of broken thread; and it is worth noting that the weft storage assembly here is used to store and supply weft yarn, ensuring the continuous supply of weft yarn during the weft insertion process; it should also be noted that the center of the central jet cylinder 2434 is a hollow cylindrical structure, the center can realize the circulation of gas, the center forms a high-speed airflow, and drives the circumferential airflow to converge to the center. When the yarn increasing plate 2439 tightens and recycles the weft, the dust generated on the yarn will pass through the reserved groove 2450 opened on the central limiting cylinder 245 into the inner cavity formed by the central limiting cylinder 245 and the central jet cylinder 2434, thereby realizing auxiliary cleaning of dust on the yarn surface.

[0042] Example 3, refer to the attached Figure 1-17On the basis of the second embodiment, in order to realize the installation of the yarn scrap collecting part and the center limiting cylinder 245: an anti-cone bucket 2461 is fixedly installed on the inner ring surface of the conical wind cover 246, and arc grooves are evenly opened on the inner wall of the outer ring of the anti-cone bucket 2461. The inner surface of the anti-cone bucket 2461 is fixedly connected to the outer surface of the central wind tube 247. The outer surface of one end of the central wind tube 247 is rotatably connected to the inner wall of the central jet tube 2434. The other end of the central wind tube 247 is fixedly connected to a wind gathering bucket 2471. A side groove is opened on the inner wall of the central wind tube 247 close to the wind gathering bucket 2471. 2470; A hook plate 2460 is fixedly mounted on the outer surface of one end of the conical wind shield 246 near the center limiting cylinder 245. A reserved groove 2450 is formed on the inner wall of the center limiting cylinder 245. A hook groove 24501 is formed through the inner wall of the reserved groove 2450. The outer surface of the hook plate 2460 is movably connected to the inner walls of the reserved groove 2450 and the hook groove 24501. A sealing ring is fixedly mounted on the end of the conical wind shield 246 near the center limiting cylinder 245. An adapting ring groove is formed on the inner wall of the center limiting cylinder 245. The inner wall of the adapting ring groove is adapted to be snap-fitted to the outer surface of the sealing ring.

[0043] In this embodiment, a yarn scrap collecting member is installed at one end of the center limiting cylinder 245 away from the mounting circular plate 243. When the conical wind shield 246 is assembled with the center limiting cylinder 245, as shown in FIG. Figure 9 As shown, the hook plate 2460 enters the hook groove 24501 through the guidance of the reserved groove 2450, and at this time the sealing ring and the adapter ring groove are tightly matched, so that the tightness of the connection between the conical wind cover 246 and the center limit cylinder 245 is achieved. When the conical wind cover 246 needs to be disassembled as a whole, only two fingers are needed to press the hook plate 2460 inward, and then the conical wind cover 246 is pulled out. It should be noted that through the assembly of the conical wind cover 246, the special vertebral design of the conical wind cover 246 can be used to guide the yarn pulled on the winding plate 244 by relying on the external inclined surface, so as to avoid the yarn directly entering the yarn cone ring 25 with a bending radius that is too small, resulting in yarn wear and breakage. The phenomenon of yarn, and the conical wind cover 246 here can collect the dust in the inner ring cavity of the central limiting cylinder 245; it is worth noting that when the conical wind cover 246 is assembled with the central limiting cylinder 245, the central wind tube 247 is synchronously inserted into the inner side of the central jet cylinder 2434, and the central wind tube 247 here is used for the circulation of air flow, and the opening of the side groove 2470 can guide the air flow in the inner ring cavity of the central limiting cylinder 245, and the design of the inward narrowing of the port of the wind collecting hopper 2471 can increase the flow rate at the air outlet end, ensure the stable guidance of the yarn, and through the flow of the central high-speed airflow, it can also avoid the yarn on the inside of the yarn cone ring 25 from curling up and causing blockage.

[0044] Example 4, refer to the attached Figure 1-17, on the basis of embodiment 3, in order to achieve auxiliary cleaning and collection of dust on the yarn surface: a reinforcing rib 2462 is provided between the conical wind cover 246 and the anti-conical bucket 2461, and the reinforcing rib 2462 is composed of a long rib and a short rib. The long rib and the short rib are bent to form a bending groove 24620. The long rib is fixedly mounted on the inner surface of the conical wind cover 246, and the short rib is fixedly mounted on the outer surface of the anti-conical bucket 2461. Each group of long ribs and short ribs is integrally formed, and an interception member is provided between the long ribs and the short ribs; the interception member includes an inner folding strip 2463 and an interception net 2464. The two ends of the inner folding strip 2463 are respectively fixedly connected to the inner side of the reinforcing rib 2462, and a retention groove 24640 is provided between the inner folding strip 2463 and the interception net 2464.

[0045] In this embodiment, referring to Figure 15-16 As shown, in the process of continuous supply of yarn by the yarn eye 250, the dust between the center limiting cylinder 245 and the center jet cylinder 2434 is guided by the side groove 2470, and the dust is driven into the retention groove 24640 for interception and retention. The reinforcing ribs 2462 here can not only serve as a support for the intercepting member, but also enhance the structural support of the conical wind hood 246, increase the overall strength of the conical wind hood 246, and avoid deformation that affects the guidance and supply of the yarn.

[0046] Example 5, refer to the attached Figure 1-17 Based on the fourth embodiment, the present invention further provides a method for using a pre-production sample loom for textile fabrics, comprising the following steps:

[0047] Step 1: First, the yarn introduction mechanism 2 is moved as a whole to one side of the sample loom body 1 and stopped at a suitable position. One end of the yarn is led out from the yarn bobbin 221, wound and stored on the surface of the yarn winding plate 244, and one end of the yarn is pulled through the yarn eye 250 provided in the center of the yarn cone ring 25. Then, the yarn is passed through the adapted yarn guide 11 at one time to complete the weft insertion and guiding of the loom.

[0048] Step 2: Before the yarn threading assembly, the yarn storage assembly and the air jet assembly cooperate with each other to guide the yarn. At the same time, the air flow ejected by the hollow shaft fan 2412 keeps the yarn at the outlet of the yarn threading cone ring 25;

[0049] Step 3: When weft insertion stops, the yarn tensioner responds quickly. At this time, the motor 2431 is turned on, causing the driving gear 2432 to rotate, and the gear ring 2433 drives the central air-jet cylinder 2434 to rotate synchronously. Under the limiting action of the thread adaptation, the threaded collar 2437 moves along the horizontal position of the central air-jet cylinder 2434. At this time, the angle of the movable arm 2438 and the movable arm 1 2436 changes, thereby driving the multiple sets of yarn-raising plates 2439 to perform synchronous diameter-changing activities, quickly responding to the rapid tightening of the yarn wound on the yarn winding plate 244, and preventing the yarn from loosening, which may cause weft skipping or thread breakage.

[0050] Step 4: Install a yarn scrap collector at one end of the center limiting cylinder 245 away from the mounting circular plate 243. When the conical hood 246 is assembled with the center limiting cylinder 245, the hook plate 2460 is guided into the hook groove 24501 by the reserved groove 2450, and at this time, the sealing ring and the adapter ring groove are tightly fitted. When the conical hood 246 is assembled with the center limiting cylinder 245, the center air cylinder 247 is simultaneously inserted into the inner side of the center jet cylinder 2434, and the opening of the side groove 2470 can guide the airflow in the inner ring cavity of the center limiting cylinder 245, and the design of the inward narrowing of the wind collecting bucket 2471 port can increase the flow rate at the air outlet end, ensure the stable guidance of the yarn, and prevent the yarn from curling up and causing blockage inside the yarn cone ring 25 through the flow of the central high-speed airflow.

[0051] Step 5. The center of the central air duct 247 is a hollow cylindrical structure, which can realize the circulation of gas and form a high-speed airflow in the center, driving the circumferential airflow to converge to the center. When the yarn-raising plate 2439 tightens and recycles the weft, the dust generated on the yarn will pass through the reserved groove 2450 opened on the central limiting cylinder 245 and enter the inner cavity formed by the central limiting cylinder 245 and the central jet cylinder 2434, and the intercepting component will intercept and retain the dust.

[0052] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A pre-production sample loom for textile fabrics, comprising a sample loom body (1), wherein a yarn guide (11) is provided at an upper end of one side of the sample loom body (1), and characterized in that: A yarn guiding mechanism (2) is provided on one side of the sample loom body (1) close to the yarn guide (11), the yarn guiding mechanism (2) includes a support unit and an air jet weft insertion unit (24), the support unit includes a movable seat (21), a first mounting frame (22) and a second mounting frame (23), the air jet weft insertion unit (24) includes an air jet assembly, a yarn storage assembly and a yarn threading assembly, the air jet assembly includes a fixed sleeve (241) and a limiting ring plate (242), the yarn storage assembly is provided on the limiting ring plate On one side of the ring plate (242), the yarn threading assembly is arranged on the outside of the yarn storage assembly, and the yarn storage assembly includes a mounting circular plate (243), a yarn winding plate (244) and a center limiting cylinder (245), the inner side of the center limiting cylinder (245) is provided with a yarn tensioning member, and the end of the center limiting cylinder (245) away from the mounting circular plate (243) is provided with a yarn scrap collecting member, the yarn scrap collecting member includes a conical wind cover (246) and an air guide member, and the air guide member includes a center air cylinder (247).

2. The pre-production sample loom for textile fabrics according to claim 1, characterized in that: A hollow shaft fan (2412) is fixedly installed on the inner side of the fixed sleeve (241), and a flow guide cover (2411) is provided at the input end of the hollow shaft fan (2412). One end of the fixed sleeve (241) away from the flow guide cover (2411) is fixedly connected to the outer surface of the limiting ring plate (242), the inner surface of the limiting ring plate (242) is movably connected to the outer surface of the mounting circular plate (243), and the outer surface of the mounting circular plate (243) is fixedly connected to the yarn winding plate (244), and the outer surface of one end of the central limiting cylinder (245) is fixedly connected to the outer side surface of the mounting circular plate (243).

3. The pre-production sample loom for textile fabrics according to claim 2, characterized in that: The yarn tensioner comprises a motor (2431) and a central jet cylinder (2434), wherein the central jet cylinder (2434) is rotatably mounted on the inner side of a mounting circular plate (243), and the motor (2431) is fixedly mounted on one side of the mounting circular plate (243). A driving gear (2432) is fixedly connected to the output shaft of the motor (2431), and a gear ring (2433) is rotatably engaged on the outer surface of the driving gear (2432). The central inner surface of the gear ring (2433) is fixedly connected to the outer surface of one end of the central jet cylinder (2434), and a rotating ring (2435) is rotatably connected to the outer surface of the central jet cylinder (2434). Connecting rods are fixedly connected to both sides of the rotating ring (2435), and the other end of the connecting rod is fixedly connected to the inner wall of the central limiting cylinder (245). A movable arm rod (2436) is hingedly mounted on the outer surface of the rotating ring (2435).

4. The pre-production sample loom for textile fabrics according to claim 3, characterized in that: The outer surface of the central jet cylinder (2434) is threadedly connected to a threaded collar (2437), and the outer surface of the threaded collar (2437) is hingedly installed with a movable arm rod 2 (2438), the other end of the movable arm rod 2 (2438) is movably connected to the movable arm rod 1 (2436), and the end of the movable arm rod 2 (2438) away from the threaded collar (2437) is fixedly connected to a yarn expansion plate (2439).

5. The pre-production sample loom for textile fabrics according to claim 3, characterized in that: A fixing ring (2451) is fixedly mounted on the outer side of one end of the center limiting cylinder (245), and the outer surface of the fixing ring (2451) is movably engaged with the inner wall of the mounting circular plate (243). A reserved groove (2450) is provided on the inner wall of the outer ring of the center limiting cylinder (245).

6. The pre-production sample loom for textile fabrics according to claim 1, characterized in that: An anti-cone bucket (2461) is fixedly mounted on the inner annular surface of the conical wind hood (246), and arc-shaped grooves are evenly provided on the inner wall of the outer ring of the anti-cone bucket (2461). The inner surface of the anti-cone bucket (2461) is fixedly connected to the outer surface of the central wind tube (247), and the outer surface of one end of the central wind tube (247) is rotatably connected to the inner wall of the central jet tube (2434). The other end of the central wind tube (247) is fixedly connected to a wind gathering bucket (2471), and a side groove (2470) is provided on the inner wall of the central wind tube (247) on one side close to the wind gathering bucket (2471).

7. The pre-production sample loom for textile fabrics according to claim 6, characterized in that: A hook plate (2460) is fixedly mounted on the outer surface of one end of the conical wind shield (246) close to the center limiting cylinder (245); a reserved groove (2450) is provided on the inner wall of the center limiting cylinder (245); a hook groove (24501) is provided through the inner wall of the reserved groove (2450); and the outer surface of the hook plate (2460) is movably connected to the inner wall of the reserved groove (2450) and the hook groove (24501).

8. The pre-production sample loom for textile fabrics according to claim 7, characterized in that: A reinforcing rib (2462) is provided between the conical wind shield (246) and the anti-conical bucket (2461), and the reinforcing rib (2462) is composed of a combination of long ribs and short ribs, the long ribs being fixedly mounted on the inner surface of the conical wind shield (246), and the short ribs being fixedly mounted on the outer surface of the anti-conical bucket (2461), each group of the long ribs and the short ribs being integrally formed, and an intercepting piece being provided between the long ribs and the short ribs.

9. The pre-production sample loom for textile fabrics according to claim 8, characterized in that: The intercepting member comprises an inner folding strip (2463) and an intercepting net (2464); both ends of the inner folding strip (2463) are respectively fixedly connected to the inner side of the reinforcing rib (2462); and a retention groove (24640) is provided between the inner folding strip (2463) and the intercepting net (2464).

10. The pre-production sample loom for textile fabrics according to claim 1, characterized in that: The yarn threading assembly comprises a yarn threading cone ring (25), a yarn threading eye (250) is provided on the inner wall of one end of the yarn threading cone ring (25), a curved yarn guide plate (251) is fixedly mounted on the inner annular surface of the yarn threading cone ring (25), a connecting block (252) is fixedly mounted on the upper end of the yarn threading cone ring (25), and a connecting plate (253) is fixedly connected to the upper end of the connecting block (252), and the connecting plate (253) is detachably mounted on the upper side of the limiting ring plate (242).

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