Pre-production sample weaving machine for textile fabric

Abstract

The invention relates to the technical field of weaving machine production, in particular to a pre-production sample weaving machine for textile fabrics, which comprises a sample weaving machine body, a yarn guide is arranged at the upper end of one side of the sample weaving machine body, and a yarn guide mechanism is arranged on one side, close to the yarn guide, of the sample weaving machine body. By adopting the optimized design of the yarn guiding mechanism, the stability of yarn guiding operation of the small sample loom is achieved, through joint cooperation of the air injection assembly, the yarn storage assembly and the yarn threading assembly, high-speed air flow in the center is used for conducting injection guiding on yarn, the bending radius during yarn guiding can be increased, the yarn bending curvature can be reduced, and abrasion can be reduced; and through the design of the yarn tensioning piece and the yarn scrap collecting piece, sudden looseness of the yarn is kept when weft insertion is stopped, the phenomena of yarn breaking and weft jumping are avoided, and the production efficiency and quality of textile fabric samples can be improved during weft insertion operation.

Description

Technical Field

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

[0002] In the textile industry, weaving fabric samples is a crucial step. It can not only preview the effect of the final product, but also help designers and manufacturers adjust and confirm the fabric pattern, structure, color, etc. before formal production to ensure that the quality of the mass-produced products meets the design requirements. On a loom, weft insertion is to introduce the weft yarn into the shed formed by the warp yarn opening. After the shed is formed, a weft insertion carrier or medium such as a shuttle is used to lead the weft yarn through the shed so that it interlaces with the warp yarn to form a fabric. Jet weft insertion uses the ejected compressed air flow to traction the weft yarn and bring it through the shed.

[0003] In the prior art, for example, a weft feeding device of a rapier loom with the publication number CN218262963U includes a frame, a support rod horizontally arranged on the frame for placing a weft accumulator, and a first mounting seat arranged on the support rod for mounting the weft accumulator. The frame is also provided with a distance adjusting component capable of adjusting the horizontal distance and an angle adjusting component capable of making the weft accumulator swing around the vertical direction with the first mounting seat as the base point. The frame is also provided with a placing plate for placing the weft yarn roll and a guiding mechanism arranged on the frame for guiding the weft yarn on the weft yarn roll into the weft accumulator. By making the outlet of each weft accumulator face the wire hole on the wire guiding plate, the deflection amplitude of the weft yarn when it goes from the weft accumulator to the wire guiding plate can be reduced, and moreover, through the guiding mechanism of the weft accumulator, the deflection amplitude of the weft yarn when it enters the weft accumulator from the weft yarn roll can be small, so that the deflection amplitude of the weft yarn during the weft feeding process of the rapier loom is small.

[0004] In order to solve the problem of excessive deflection amplitude of the weft yarn when it enters the wire guiding plate from the weft accumulator, the prior art uses the weft feeding method of the guiding mechanism for treatment. However, in the actual use process, once the weft insertion stops, the weft yarn at the rear end of the weft accumulator quickly relaxes, affecting the efficiency of subsequent yarn guiding, and the yarn is prone to curl at the end of the nozzle, resulting in nozzle blockage.

[0005] Therefore, the present invention proposes a pre-production sample loom for textile fabrics to solve the problem that when the weft insertion of a traditional loom stops, the weft yarn at the rear end of the weft accumulator quickly relaxes, affecting the efficiency of subsequent yarn guiding. It can quickly support the immediately stopped yarn, avoid the state of yarn curling or relaxation, ensure the stable supply of the yarn, and can also assist in cleaning the surface dust when guiding the yarn. Summary of the Invention

[0006] Aiming at the deficiencies of the existing technology, 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 object, the present invention provides the following technical solution: A pre-production sample loom for textile fabrics, including a sample loom body. At the upper end of one side of the sample loom body, a yarn guide is provided. On the side of the sample loom body close to the yarn guide, a yarn guiding mechanism is provided. The yarn guiding mechanism includes a supporting unit and a jet weft insertion unit. The supporting unit includes a moving seat, a mounting frame one, and a mounting frame two. The jet weft insertion unit includes a jet component, a yarn storage component, and a yarn threading component. The jet component includes a fixed sleeve and a limiting ring plate. The yarn storage component is arranged on one side of the limiting ring plate. The yarn threading component is arranged outside the yarn storage component. The yarn storage component includes a mounting circular plate, a yarn winding plate, and a central limiting cylinder. Inside the central limiting cylinder, a yarn tensioning member is provided. At one end of the central limiting cylinder away from the mounting circular plate, a yarn debris collecting member is provided. The yarn debris collecting member includes a conical air hood and a gas guiding member. The gas guiding member includes a central air cylinder.

[0008] Preferably, a hollow shaft fan is fixedly installed inside the fixed sleeve. At the input end of the hollow shaft fan, a flow guiding cover is provided. One end of the fixed sleeve away from the flow guiding 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 the yarn winding plate. One end outer surface of the central limiting cylinder is fixedly connected to the outer side of the mounting circular plate.

[0009] Preferably, the yarn tensioning member includes a motor and a central jet cylinder. The central jet cylinder is rotatably installed inside the mounting circular plate. The motor is fixedly installed on one side of the mounting circular plate. A driving gear is fixedly connected to the output shaft of the motor. A toothed ring meshes and rotates on the outer surface of the driving gear. The central inner surface of the toothed ring is fixedly connected to one end outer surface of the central jet cylinder. The outer surface of the central jet cylinder is rotatably connected to a rotating ring. Two connecting rods are fixedly connected to both sides of the rotating ring. The other ends of the connecting rods are fixedly connected to the inner wall of the central limiting cylinder. An active arm rod one is hingedly installed on the outer surface of the rotating ring.

[0010] Preferably, a threaded collar is threadedly connected to the outer surface of the central jet cylinder. An active arm rod two is hingedly installed on the outer surface of the threaded collar. The other end of the active arm rod two is movably connected to the active arm rod one. A yarn tightening plate is fixedly connected to one end of the active arm rod two away from the threaded collar.

[0011] Preferably, a fixed ring is fixedly installed on the outer side of one end of the central limiting cylinder. The outer surface of the fixed ring is movably clamped with the inner wall of the mounting circular plate. A reserved groove is opened on the outer ring inner wall of the central limiting cylinder.

[0012] Preferably, an inverted cone hopper is fixedly installed on the inner circumferential surface of the conical air hood. Arc-shaped grooves are evenly formed on the outer circumferential inner wall of the inverted cone hopper. The inner surface of the inverted cone hopper is fixedly connected to the outer surface of the central air cylinder. One end of the outer surface of the central air cylinder is rotatably connected to the inner wall of the central air jet cylinder. The other end of the central air cylinder is fixedly connected to a wind gathering hopper. Side grooves are formed on the inner wall of the central air cylinder near the wind gathering hopper.

[0013] Preferably, a hook plate is fixedly installed on the outer surface of one end of the conical air hood close to the central limiting cylinder. A reserved groove is formed on the inner wall of the central limiting cylinder. A hook groove is formed through the inner wall of the reserved groove. The outer surface of the hook plate is movably connected to the inner walls of the reserved groove and the hook groove.

[0014] Preferably, reinforcing rib strips are arranged between the conical air hood and the inverted cone hopper. The reinforcing rib strips are composed of long rib strips and short rib strips. The long rib strips are fixedly installed on the inner surface of the conical air hood. The short rib strips are fixedly installed on the outer surface of the inverted cone hopper. Each group of long rib strips and short rib strips are integrally formed. An intercepting member is arranged between the long rib strips and the short rib strips.

[0015] Preferably, the intercepting member includes an inner folding strip and an intercepting net. Two ends of the inner folding strip are respectively fixedly connected to the inner sides of the reinforcing rib strips. A retention groove is arranged between the inner folding strip and the intercepting net.

[0016] Preferably, the yarn threading assembly includes a yarn threading conical ring. Yarn threading holes are formed on the inner wall of one end of the yarn threading conical ring. A curved yarn guiding plate is fixedly installed on the inner circumferential surface of the yarn threading conical ring. A connecting block is fixedly installed at the upper end of the yarn threading conical ring. The upper end of the connecting block is fixedly connected to a connecting plate. The connecting plate is detachably installed on the upper side of the limiting ring plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: A pre-production sample loom for textile fabrics proposed by the present invention realizes the stability of the yarn guiding operation of the sample loom through the optimized design of the yarn guiding mechanism. Through the joint cooperation of the air jet assembly, the yarn storage assembly and the yarn threading assembly, the high-speed air flow in the center is used to jet and guide the yarn, which can increase the bending radius when the yarn is guided, reduce the bending degree of the yarn, and reduce wear. Moreover, through the design of the yarn tensioning member and the yarn debris collecting member, the sudden relaxation of the yarn when the weft insertion stops is maintained, the phenomena of yarn breakage and weft skipping are avoided, and during the weft insertion operation, the dust on the surface of the yarn can be assisted to be cleaned by relying on the high-speed air flow in the center, improving the production efficiency and quality of the textile fabric samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front three-dimensional structural schematic diagram of the sample loom body of the present invention; Figure 2 It is a schematic three-dimensional structure diagram of the back of the small sample loom body of the present invention; Figure 3 of the present invention Figure 1 Schematic enlarged structure diagram at position A; Figure 4 It is a schematic three-dimensional structure diagram of the yarn guiding mechanism of the present invention; Figure 5 It is a disassembled structure diagram of a single-group air-jet weft insertion unit of the present invention; Figure 6 It is a half-sectional structure diagram of a single-group air-jet weft insertion unit of the present invention; Figure 7 of the present invention Figure 6 Schematic enlarged structure diagram at position B; Figure 8 of the present invention Figure 6 Schematic enlarged structure diagram at position C; Figure 9 of the present invention Figure 6 Schematic enlarged structure diagram at position D; Figure 10 It is a partial disassembled structure diagram of a single-group air-jet weft insertion unit of the present invention; Figure 11 of the present invention Figure 10 Schematic enlarged structure diagram at position E; Figure 12 It is a disassembled structure schematic diagram of the yarn tensioning member and the central limiting cylinder of the present invention Figure 1 ; Figure 13 of the present invention Figure 12 Schematic enlarged structure diagram at position F; Figure 14 It is a disassembled structure schematic diagram of the yarn tensioning member and the central limiting cylinder of the present invention Figure 2 ; Figure 15 It is a disassembled structure diagram of the yarn debris collecting member and the air guiding member of the present invention; Figure 16 It is a partial cross-sectional structure diagram of the conical air hood and the central air cylinder of the present invention; Figure 17 It is a disassembled structure diagram of the intercepting member of the present invention.

[0019] In the figure: 1. Small sample loom body; 11. Yarn guide; 2. Yarn drawing mechanism; 21. Moving seat; 211. Support rod; 22. Mounting frame I; 221. Yarn bobbin; 23. Mounting frame II; 24. Air jet weft insertion unit; 241. Fixed sleeve; 2411. Flow guide cover; 2412. Hollow shaft fan; 242. Limit ring plate; 243. Mounting circular plate; 244. Yarn winding plate; 245. Central limit cylinder; 2450. Reserved groove; 24501. Hook groove; 2451. Fixed ring; 2431. Motor; 2432. Driving gear; 2433. Tooth ring; 2434. Central air jet cylinder; 2435. Rotating ring; 2436. Moving arm rod I; 2437. Threaded collar; 2438. Moving arm rod II; 2439. Yarn expanding plate; 246. Conical air hood; 2460. Hook plate; 2461. Inverted cone hopper; 2462. Reinforcing rib; 24620. Bent groove; 2463. Inner folding strip; 2464. Intercepting net; 24640. Retention groove; 247. Central air cylinder; 2470. Side groove; 2471. Air gathering hopper; 25. Yarn threading taper ring; 250. Yarn threading hole; 251. Curved yarn guide plate; 252. Connecting block; 253. Connecting plate. Detailed implementation mode

[0020] In order to clearly and completely describe the purpose, technical solution of the present invention, and make the advantages more clear and understandable, the following further details the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, 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 those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0021] Example 1, please refer to Figure 1-17, the present invention provides a technical solution: a pre-production sample loom for textile fabrics, including a sample loom body 1. A yarn guide 11 is provided at the upper end of one side of the sample loom body 1. A yarn guiding mechanism 2 is provided on the 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 moving seat 21, a mounting frame one 22 and a mounting frame two 23. The air-jet weft insertion unit 24 includes an air-jet component, a yarn storage component and a yarn threading component. The air-jet component includes a fixed sleeve 241 and a limit ring plate 242. The yarn storage component is arranged on one side of the limit ring plate 242. The yarn threading component is arranged on the outside of the yarn storage component. The yarn storage component includes a mounting circular plate 243, a yarn winding plate 244 and a central limit cylinder 245. A yarn tensioning member is arranged inside the central limit cylinder 245. A yarn debris collecting member is arranged at one end of the central limit cylinder 245 away from the mounting circular plate 243. The yarn debris collecting member includes a conical air hood 246 and an air guiding member. The air guiding member includes a central air cylinder 247; a hollow shaft fan 2412 is fixedly installed inside the fixed sleeve 241. A flow guiding cover 2411 is arranged at the input end of the hollow shaft fan 2412. One end of the fixed sleeve 241 away from the flow guiding cover 2411 is fixedly connected to the outer surface of the limit ring plate 242. The inner surface of the limit 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 yarn winding plate 244. One end outer surface of the central limit cylinder 245 is fixedly connected to the outer side surface of the mounting circular plate 243; the yarn threading component includes a yarn threading tapered ring 25. A yarn threading eye 250 is opened on the inner wall of one end of the yarn threading tapered ring 25. A curved yarn guiding plate 251 is fixedly installed on the inner circumferential surface of the yarn threading tapered ring 25. A connecting block 252 is fixedly installed at the upper end of the yarn threading tapered ring 25. The upper end of the connecting block 252 is fixedly connected to a connecting plate 253. The connecting plate 253 is detachably installed on the upper side of the limit ring plate 242; the upper end of the moving seat 21 is fixedly connected to a support rod 211. The outer surface of the support rod 211 is fixedly connected to the mounting frame one 22 and the mounting frame two 23. A yarn bobbin 221 is rotatably installed at the upper end of the mounting frame one 22. The air-jet weft insertion unit 24 is arranged inside the mounting frame two 23; 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. One end of the yarn is drawn through the yarn threading eye 250 in the center of the yarn threading tapered ring 25, and then the yarn is passed through the adapted yarn guide 11 in sequence to complete the weft insertion guiding of the loom. It should be noted that before the yarn threading component, through the mutual cooperation of the yarn storage component and the air-jet component, the yarn can be guided. At the same time, the air flow ejected by the hollow shaft fan 2412 is used to keep the yarn out of the yarn threading tapered ring 25. The reason for installing the curved yarn guiding plate 251 inside the yarn threading tapered ring 25 is that it can reduce the hard friction between the yarn and the sharp surface and avoid abrasion of the yarn.

[0022] Embodiment Two, referring to the attached Figure 1-17, on the basis of Embodiment 1, in order to avoid the situation where the yarn on the yarn winding plate 244 rapidly relaxes when the weft insertion operation stops: The yarn tensioning member includes a motor 2431 and a central air jet cylinder 2434. The central air jet cylinder 2434 is rotatably installed inside the mounting circular plate 243. The motor 2431 is fixedly installed on one side of the mounting circular plate 243. A driving gear 2432 is fixedly connected to the output shaft of the motor 2431. A toothed ring 2433 is meshed and rotated on the outer surface of the driving gear 2432. The inner surface of the center of the toothed ring 2433 is fixedly connected to the outer surface of one end of the central air jet cylinder 2434. A rotating ring 2435 is rotatably connected to the outer surface of the central air jet cylinder 2434. Connecting rods are fixedly connected to both sides of the rotating ring 2435. The other ends of the connecting rods are fixedly connected to the inner wall of the central limiting cylinder 245. An active arm rod 2436 is hingedly installed on the outer surface of the rotating ring 2435; A threaded collar 2437 is threadedly connected to the outer surface of the central air jet cylinder 2434. An active arm rod 2438 is hingedly installed on the outer surface of the threaded collar 2437. The other end of the active arm rod 2438 is movably connected to the active arm rod 2436. A yarn tightening plate 2439 is fixedly connected to the end of the active arm rod 2438 away from the threaded collar 2437; A fixed ring 2451 is fixedly installed on the outer side of one end of the central limiting cylinder 245. The outer surface of the fixed ring 2451 is movably clamped with the inner wall of the mounting circular plate 243. A reserved groove 2450 is provided on the outer ring inner wall of the central limiting cylinder 245; In this embodiment, when the weft insertion stops, the yarn tensioning member responds quickly. At this time, the motor 2431 is turned on, causing the driving gear 2432 to rotate, and the toothed ring 2433 drives the central air jet cylinder 2434 to rotate synchronously. Under the limiting action of thread fitting, the threaded collar 2437 moves along the horizontal position of the central air jet cylinder 2434. At this time, the angle between the active arm rod 2438 and the active arm rod 2436 changes, thereby driving a plurality of yarn tightening plates 2439 to perform synchronous diameter-changing activities, quickly responding to the rapid tightening of the yarn wound on the yarn winding plate 244, avoiding the yarn from loosening, and thus preventing weft jumping or yarn breakage; It should be noted that the weft storage assembly here is used to store and supply the weft yarn to ensure the continuous supply of the weft yarn during the weft insertion process; It also needs to be explained that the center of the central air jet cylinder 2434 is a hollow cylinder structure, and gas can flow through the center, forming a high-speed air flow at the center, driving the circumferential air flow to converge towards the center. When the yarn tightening plate 2439 tightens and recovers the weft yarn, the dust generated on the yarn will enter the inner cavity formed between the central limiting cylinder 245 and the central air jet cylinder 2434 through the reserved groove 2450 provided on the central limiting cylinder 245, thus realizing the auxiliary cleaning of the dust on the yarn surface.

[0023] Embodiment 3, referring to the appendix Figure 1-17, on the basis of the second embodiment, in order to realize the installation of the yarn debris collector and the central limiting cylinder 245: an inverted cone hopper 2461 is fixedly installed on the inner circumferential surface of the conical air hood 246. Arc grooves are evenly formed on the outer circumferential inner wall of the inverted cone hopper 2461. The inner surface of the inverted cone hopper 2461 is fixedly connected to the outer surface of the central air cylinder 247. One end outer surface of the central air cylinder 247 is rotatably connected to the inner wall of the central air jet cylinder 2434. The other end of the central air cylinder 247 is fixedly connected to a wind collecting hopper 2471. A side groove 2470 is formed on the inner wall of the central air cylinder 247 near the wind collecting hopper 2471; a hook plate 2460 is fixedly installed on the outer surface of the end of the conical air hood 246 close to the central limiting cylinder 245. A reserved groove 2450 is formed on the inner wall of the central 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 ring is fixedly installed on the end of the conical air hood 246 close to the central limiting cylinder 245. An adapted ring groove is formed on the inner wall of the central limiting cylinder 245. The inner wall of the adapted ring groove is adapted and clamped with the outer surface of the sealing ring ring; In this embodiment, a yarn debris collector is installed at the end of the central limiting cylinder 245 away from the mounting circular plate 243. When the conical air hood 246 and the central limiting cylinder 245 are assembled, as Figure 9 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 ring and the adapted ring groove are tightly fitted, so as to realize the tight connection between the conical air hood 246 and the central limiting cylinder 245. When the whole conical air hood 246 needs to be disassembled, only two fingers need to press the hook plate 2460 inward and then pull the conical air hood 246 outwards; and it should be noted that through the assembly of the conical air hood 246, not only can the special conical design of the conical air hood 246 be used to guide the yarns drawn on the yarn winding plate 244 by the external inclined surface, avoiding the phenomenon that the yarns directly enter the yarn threading cone ring 25 with too small bending radius resulting in yarn abrasion and breakage, but also the conical air hood 246 here can collect the dust in the inner circumferential cavity of the central limiting cylinder 245; it should be noted that when the conical air hood 246 is assembled with the central limiting cylinder 245, the central air cylinder 247 is synchronously inserted into the inner side of the central air jet cylinder 2434. Here, the central air cylinder 247 is used for the flow of air, and the formation of the side groove 2470 can guide the air flow in the inner circumferential cavity of the central limiting cylinder 245. And through the design of the inward narrowing of the port of the wind collecting hopper 2471, the flow rate of the air outlet end can be increased to ensure the stable guidance of the yarns. Through the flow of the high-speed central air flow, the situation that the yarns inside the yarn threading cone ring 25 are curled and blocked can also be avoided.

[0024] Embodiment 4, referring to the attached Figure 1-17, on the basis of Embodiment 3, in order to achieve the auxiliary cleaning and collection of dust on the surface of the yarn: there is a reinforcing rib 2462 between the conical air hood 246 and the inverted cone hopper 2461. The reinforcing rib 2462 is composed of a long rib and a short rib. A bending groove 24620 is formed at the bending part of the long rib and the short rib. The long rib is fixedly installed on the inner surface of the conical air hood 246, and the short rib is fixedly installed on the outer surface of the inverted cone hopper 2461. Each group of long ribs and short ribs are integrally formed, and an intercepting member is arranged between the long rib and the short rib; the intercepting member includes an inner folding strip 2463 and an intercepting 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 arranged between the inner folding strip 2463 and the intercepting net 2464; In this embodiment, referring to Figure 15 - Figure 16 As shown, during the continuous supply of the yarn through the yarn threading eye 250, the dust between the central limiting cylinder 245 and the central air jet cylinder 2434 is driven by the guiding action of the side groove 2470 to enter the retention grooves 24640 for interception and retention. And the reinforcing rib 2462 here can not only serve as a support for the intercepting member, but also enhance the structural support of the conical air hood 246, increase the overall strength of the conical air hood 246, and prevent deformation from affecting the guiding and supply of the yarn.

[0025] Embodiment 5, referring to the appendix Figure 1-17 , on the basis of Embodiment 4, the present invention also provides a method for using a pre-production sample loom for textile fabrics, including the following steps: Step 1: First, move the yarn guiding mechanism 2 as a whole to one side of the sample loom body 1 and stop at a suitable position. Lead out one end of the yarn from the yarn bobbin 221, wind and store it on the surface of the yarn winding plate 244. Pull one end of the yarn through the yarn threading eye 250 at the center of the yarn threading cone ring 25, and then pass the yarn through the adapted yarn guide 11 in sequence to complete the weft insertion guiding of the loom. Step 2: Before the yarn threading assembly, through the mutual cooperation of the yarn storage assembly and the air jet assembly, the yarn can be guided. At the same time, the air flow ejected by the hollow shaft fan 2412 is used to keep the yarn out of the yarn threading cone ring 25. Step 3: When the weft insertion stops, the yarn tensioning member responds quickly. At this time, the motor 2431 is turned on, so that the driving gear 2432 rotates, and the toothed ring 2433 drives the central air jet cylinder 2434 to rotate synchronously. Under the limiting action of the threaded fit, the threaded sleeve ring 2437 moves along the horizontal position of the central air jet cylinder 2434. At this time, the angle between the movable arm rod two 2438 and the movable arm rod one 2436 changes, thereby driving a plurality of yarn expanding 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 becoming loose, thereby causing the situation of weft skipping or yarn breakage. Step Four: Install a yarn debris collection piece at one end of the central limiting cylinder 245 away from the mounting circular plate 243. When the conical air hood 246 is assembled with the central limiting cylinder 245, the hook plate 2460 enters the hook groove 24501 through the guidance of the reserved groove 2450. At this time, the sealing ring and the mating ring groove are tightly fitted. When the conical air hood 246 is assembled with the central limiting cylinder 245, the central air cylinder 247 is synchronously inserted into the inner side of the central air jet cylinder 2434. And the opening of the side groove 2470 can guide the airflow in the inner ring cavity of the central limiting cylinder 245. And through the design of the narrowing of the port of the air collecting hopper 2471, the flow rate of the air outlet end can be increased to ensure the stable guidance of the yarn. Through the flow of the central high-speed airflow, it can also avoid the situation that the yarn inside the yarn threading cone ring 25 is curled and blocked; Step Five: The center of the central air cylinder 247 is a hollow cylinder structure, and gas can flow through the center to form a high-speed airflow, driving the circumferential airflow to converge towards the center. When the weft yarn is tightened and retracted by the yarn expanding plate 2439, the dust generated on the yarn will enter the inner cavity formed by the central limiting cylinder 245 and the central air jet cylinder 2434 through the reserved groove 2450 opened on the central limiting cylinder 245, and the intercepting piece intercepts and retains the dust.

[0026] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present 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 arranged at the upper end of one side of the sample loom body (1), and it is characterized in that: On one side of the small sample loom body (1) close to the yarn guide (11), a yarn guiding mechanism (2) is provided. The yarn guiding mechanism (2) includes a supporting unit and a jet weft insertion unit (24). The supporting unit includes a moving seat (21), a first mounting frame (22) and a second mounting frame (23). The jet weft insertion unit (24) includes a jet component, a yarn storage component and a yarn threading component. The jet component includes a fixed sleeve (241) and a limiting ring plate (242). The yarn storage component is arranged on one side of the limiting ring plate (242), and the yarn threading component is arranged on the outside of the yarn storage component. The yarn storage component includes a mounting circular plate (243), a yarn winding plate (244) and a central limiting cylinder (245). A yarn tensioning member is arranged inside the central limiting cylinder (245). A yarn debris collecting member is arranged at one end of the central limiting cylinder (245) away from the mounting circular plate (243). The yarn debris collecting member includes a conical air hood (246) and an air guiding member. The air guiding member includes a central air cylinder (247).

2. The pre-production sample loom for textile fabrics according to claim 1, characterized in that: A hollow shaft blower (2412) is fixedly installed inside the fixed sleeve (241). A flow guiding cover (2411) is arranged at the input end of the hollow shaft blower (2412). One end of the fixed sleeve (241) away from the flow guiding 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). The outer surface of the mounting circular plate (243) is fixedly connected to the yarn winding plate (244). One end outer surface 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 tensioning member includes a motor (2431) and a central jet cylinder (2434). The central jet cylinder (2434) is rotatably installed inside the mounting circular plate (243). The motor (2431) is fixedly installed on one side of the mounting circular plate (243). A driving gear (2432) is fixedly connected to the output shaft of the motor (2431). A toothed ring (2433) is meshed and rotated on the outer surface of the driving gear (2432). The central inner surface of the toothed ring (2433) is fixedly connected to one end outer surface of the central jet cylinder (2434). The outer surface of the central jet cylinder (2434) is rotatably connected to a rotating ring (2435). Connecting rods are fixedly connected to both sides of the rotating ring (2435). The other ends of the connecting rods are fixedly connected to the inner wall of the central limiting cylinder (245). A first movable arm rod (2436) is hingedly installed on the outer surface of the rotating ring (2435).

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

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

6. The pre-production sample loom for textile fabrics according to claim 1, characterized in that: An inverted cone hopper (2461) is fixedly installed on the inner circumferential surface of the conical wind hood (246). Arc-shaped grooves are uniformly formed on the inner wall of the outer ring of the inverted cone hopper (2461). The inner surface of the inverted cone hopper (2461) is fixedly connected with the outer surface of the central air duct (247). One end outer surface of the central air duct (247) is rotatably connected with the inner wall of the central air jet cylinder (2434). The other end of the central air duct (247) is fixedly connected with a wind collecting hopper (2471). A side groove (2470) is formed on the inner wall of the central air duct (247) close to the wind collecting hopper (2471).

7. The pre-production sample loom for textile fabrics according to claim 6, characterized in that: A hook plate (2460) is fixedly installed on the outer surface of one end of the conical wind hood (246) close to the central limiting cylinder (245). A reserved groove (2450) is formed on the inner wall of the central 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 with the inner walls of the reserved groove (2450) and the hook groove (24501).

8. A pre-production sample loom for textile fabrics according to claim 7, characterized in that: Reinforcing rib strips (2462) are arranged between the conical wind hood (246) and the inverted cone hopper (2461). The reinforcing rib strips (2462) are composed of long rib strips and short rib strips. The long rib strips are fixedly installed on the inner surface of the conical wind hood (246). The short rib strips are fixedly installed on the outer surface of the inverted cone hopper (2461). Each group of long rib strips and short rib strips are integrally formed. An intercepting member is arranged between the long rib strips and the short rib strips.

9. The pre-production sample loom for textile fabrics according to claim 8, characterized in that: The intercepting member includes an inner folding strip (2463) and an intercepting net (2464). Two ends of the inner folding strip (2463) are respectively fixedly connected with the inner sides of the reinforcing rib strips (2462). A retention groove (24640) is arranged between the inner folding strip (2463) and the intercepting net (2464).

10. A pre-production sample loom for textile fabrics according to claim 1, characterized in that: The yarn threading assembly includes a yarn threading conical ring (25). A yarn threading hole (250) is formed on the inner wall of one end of the yarn threading conical ring (25). A curved yarn guiding plate (251) is fixedly installed on the inner circumferential surface of the yarn threading conical ring (25). A connecting block (252) is fixedly installed at the upper end of the yarn threading conical ring (25). The upper end of the connecting block (252) is fixedly connected with a connecting plate (253). The connecting plate (253) is detachably installed on the upper side of the limiting ring plate (242).

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