Yarn gripper for air jet loom

Abstract

The utility model relates to the technical field of textile equipment, and discloses a yarn gripper for an air jet loom, which comprises a sealed shell, a yarn inlet and a yarn outlet are respectively arranged on side plates on two opposite sides of the shell, two groups of yarn gripping wheel components are parallelly arranged on the side plate on one side adjacent to the side plate on which the yarn inlet and the yarn outlet are positioned, and the yarn gripping wheel components are arranged on the side plate on the other side adjacent to the side plate on which the yarn inlet and the yarn outlet are positioned. The two yarn clamping wheel assemblies are horizontally arranged in parallel, a tensioning assembly is arranged between the two yarn clamping wheel assemblies, the tensioning assembly is located below the two yarn clamping wheel assemblies, and the tensioning assembly controls the two yarn clamping wheel assemblies through a connecting rod mechanism to automatically clamp or loosen weft yarn according to tensioning force. The weft yarn tension control device can automatically achieve accurate control over weft yarn tension, guarantees that the yarn tension is constant all the time, not only can effectively guarantee normal weft insertion operation, but also can effectively avoid the problems of yarn breakage or uneven weaving patterns and the like caused by fluctuation of the weft yarn tension, is simple in structure and flexible in adjustment, can meet the requirements for tension of different sizes, and is suitable for popularization and application. The application range is wide, and the universality is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to textile equipment technical field, especially in a kind of yarn gripper for air-jet loom. BACKGROUND

[0002] In modern textile industry, air-jet loom is widely used due to its efficiency and high quality. Air-jet loom is a shuttleless loom that uses air jet to draw the weft yarn through the shed. The working principle of air-jet loom is to use air as the weft-drawing medium to generate frictional traction on the weft yarn by jetting compressed air, thereby drawing the weft yarn through the shed. The yarn gripper of air-jet loom intermittently holds the fabric during the weft-drawing process, mainly providing tension, preventing twist or shrinkage, thereby ensuring smooth weaving and the quality of finished fabric. The yarn gripper is required to release the weft yarn during weft-drawing and quickly recover the holding state after weft-drawing, and this process is repeated.

[0003] Currently, most yarn grippers for air-jet loom on the market use fixed or semi-automatic adjustment methods to control yarn tension, which are manually adjusted or preset parameters to adapt to different working requirements. Although this design can meet the basic needs, it is not flexible enough when facing rapidly changing working environments, resulting in insufficient control of yarn tension, which can easily cause yarn breakage or uneven yarn, seriously affecting the efficiency and quality of weaving. SUMMARY

[0004] The utility model aims to provide a kind of yarn gripper for air-jet loom, can automatically realize the accurate control to weft yarn tension, ensure that yarn tension is always constant, not only can effectively guarantee the normal operation of weft-drawing, but also can effectively avoid the problems such as yarn breakage or uneven weave caused by weft yarn tension fluctuation, and the structure is simple, adjustment is flexible, can adapt to different size tension requirements, wide application range, strong versatility.

[0005] The above technical purpose of the utility model is realized by the following technical scheme:

[0006] A yarn gripper for air-jet loom, comprising a sealed housing, the side plates on the opposite sides of the housing are respectively provided with a yarn inlet and a yarn outlet, and two groups of yarn clamping wheel assemblies are arranged in parallel on the side plate adjacent to the side plate where the yarn inlet and the yarn outlet are located. The two yarn clamping wheel assemblies are horizontally parallel, and a tensioning assembly is arranged between the two yarn clamping wheel assemblies. The tensioning assembly is located below the two yarn clamping wheel assemblies, and the tensioning assembly controls the two groups of yarn clamping wheel assemblies to automatically clamp or release the weft yarn according to the tensioning force through a connecting rod mechanism.

[0007] By adopting the above technical scheme, the weft yarn enters the sealed shell from the yarn inlet, is led into the main nozzle from the yarn outlet after shuttling between the two groups of yarn clamping wheel assemblies, and is tensioned by the tensioning assembly after passing around the tensioning assembly when the weft yarn shuttles between the two groups of yarn clamping wheel assemblies, so that the yarn can be kept in constant tension to meet the weft leading operation requirement. When the weft yarn is led, the tensioning assembly is subjected to the tension of the weft yarn, at which time the connecting rod mechanism controls the two yarn clamping wheel assemblies to be automatically loosened, so as to avoid that the yarn resistance is too large to affect the weft leading operation. When the weft leading is completed, the end of the yarn close to the main nozzle loses the traction, at which time the tensioning assembly loses the effect of the weft tension, and at this time, the connecting rod mechanism controls the yarn clamping wheel assembly to automatically clamp the weft yarn, so as to avoid yarn untwisting or retraction.

[0008] The tensioning assembly and the connecting rod mechanism can be used in cooperation to realize the clamping or loosening of the weft yarn according to the change of the yarn tension before and after the weft leading, so as to realize the accurate control of the weft tension and ensure that the yarn tension is always constant. Not only can the normal weft leading operation be effectively ensured, but also the problems of yarn breakage or uneven weaving caused by the weft tension fluctuation can be effectively avoided, the weaving efficiency and the cloth surface quality are improved, and the structure of the device is simple, the adjustment is flexible, the weft yarn shuttling is more smooth, the downtime in the weaving process is effectively reduced, and the production efficiency is improved.

[0009] The further setting of the utility model is that: two yarn clamping wheel assemblies include a fixed wheel and a pressing wheel, the fixed wheel is rotatably connected with the side plate, the pressing wheel is above the fixed wheel, and the pressing wheel is connected with the connecting rod mechanism.

[0010] By adopting the above technical scheme, the tension of the yarn is transmitted to the connecting rod mechanism in real time through the tensioning assembly, the connecting rod mechanism automatically adjusts the pressing wheel in the yarn clamping wheel assembly to be close to or away from the fixed wheel according to the transmitted tension, so as to realize the clamping or loosening of the weft yarn, and ensure that the weft yarn always maintains appropriate tension, thereby enhancing the fabric quality and stability.

[0011] The further setting of the utility model is that: the connecting rod mechanism includes a connecting rod one and a connecting rod two, the lower ends of the connecting rod one and the connecting rod two are rotatably connected with the pressing wheels in the two groups of yarn clamping assemblies respectively, the upper ends of the connecting rod one and the connecting rod two are rotatably connected with fixed pins one on the side plate respectively, the middle parts of the connecting rod one and the connecting rod two are rotatably connected with one end of a driving rod one and a driving rod two respectively, and the other ends of the driving rod one and the driving rod two are rotatably connected with fixed pins two on the sliding blocks in the tensioning assembly.

[0012] By adopting the above technical scheme, the tension of the yarn directly acts on the sliding block, the height of the sliding block changes, the driving rod one and the driving rod two drive the connecting rod one and the connecting rod two to rotate towards or reversely around the fixed pin one when the sliding block moves, the bottom of the connecting rod one and the connecting rod two is connected with the pressing wheel which is close to or away from the fixed wheel, thereby adjusting the position of the pressing wheel, so that the holding or loosening of the weft yarn is realized, and the structure is simple and the operation is convenient.

[0013] The utility model discloses further provide that: the tensioning assembly includes the tensioning wheel, the tensioning wheel is rotatably connected with the sliding block, the sliding block is slidably connected with the vertical slide groove on the side plate, and the upper end of the sliding block is provided with the compression spring between the top of the vertical slide groove.

[0014] By adopting the above technical scheme, when the yarn tension changes, the pressing wheel extrudes or releases the compression spring through the sliding block, so that the sliding block moves slightly in the vertical slide groove, and the driving rod one and the driving rod two drive the connecting rod one and the connecting rod two to realize the real-time adjustment of the pressing wheel when the sliding block moves in the vertical slide groove, thereby ensuring the stability of the weft yarn tension, and at the same time, due to the action of the compression spring, the movement of the sliding block in the vertical slide groove is more stable, the mechanical vibration and noise caused by rapid adjustment are effectively reduced, and the operation stability and service life of the equipment are further improved.

[0015] The utility model discloses further provide that: still include tension adjusting assembly, the tension adjusting assembly includes the adjusting plate who sets up between the top of compression spring and the top of vertical slide groove, the side of adjusting plate away from compression spring is equipped with adjusting bolt, the lower extreme of adjusting bolt is on adjusting plate, the upper extreme of adjusting bolt is passed through side plate and is connected with side plate screw thread.

[0016] By adopting the above technical scheme, rotating the adjusting bolt makes the adjusting bolt move upwards or downwards relative to the side plate, thereby pushing the adjusting plate to press or decompress the compression spring, realizing the fine adjustment of the weft yarn tension, which not only can meet the demand of different weft yarn tension, but also can ensure that the equipment can still maintain a stable working state in high-speed operation, reduce the fabric defects caused by weft yarn tension fluctuation, and improve the production efficiency and product quality.

[0017] The utility model discloses further provide that: the fixed wheel, the pressing wheel and the tensioning wheel all are rubber wheel.

[0018] By adopting the above technical scheme, the rubber wheel is relatively soft, which can ensure the stability of the weft yarn in the transmission process while reducing the damage to the weft yarn.

[0019] The utility model discloses further provide that: the top of shell is equipped with dust suction mouth, and the dust suction mouth is connected with dust remover through dust suction pipe.

[0020] By adopting the technical scheme, the dust suction port effectively extracts dust, fluff and other impurities generated in the weft yarn conveying process from the sealed shell, avoids the influence of the impurities on the quality of the weft yarn, reduces the frequency of manual cleaning, improves the cleanliness of the production environment, reduces equipment failures caused by dust pollution, prolongs the service life of the equipment, and further improves the overall production efficiency.

[0021] The utility model discloses the beneficial effect is:

[0022] 1. The utility model discloses a tensioning assembly and connecting rod mechanism cooperation can real -time control two group yarn clamping wheel assemblies automatic according to the weft yarn tension before and after weft insertion changes realize to weft yarn and loosen, thereby realize the accurate control to weft yarn tension, guarantee yarn tension constant, not only can effectively guarantee the normal operation of weft insertion, but also can effectively avoid the problem such as weft yarn breakage or uneven weave caused by weft yarn tension fluctuation, improve weaving efficiency and cloth surface quality, simultaneously, the simple structure of the device, the flexible adjustment, weft yarn shuttle more smooth, effectively reduce the downtime in the weaving process, improve production efficiency.

[0023] 2. The utility model discloses in weft insertion operation the tension that yarn received directly acts on the sliding block, make the height change of sliding block, when the sliding block moves through drive rod no.1 and drive rod no.2 drive connecting rod no.1 and connecting rod no.2 around fixed pin no.1 reverse rotation, when connecting rod no.1 and connecting rod no.2 reverse rotation, its bottom connection's compression wheel is close to or away from fixed wheel and thus adjusts the position of compression wheel, thereby realizing the clamping or loosening of weft yarn, ensuring that weft yarn always maintains suitable tension, enhances fabric quality and stability, and simple structure, convenient operation.

[0024] 3. The utility model discloses in the compression wheel of tensioning assembly through the sliding block extrusion or release compression spring, make the sliding block in longitudinal slide groove do fine adjustment movement, when the sliding block moves in longitudinal slide groove, respectively through drive rod no.1 and drive rod no.2 drive connecting rod no.1 and connecting rod no.2 realize the real -time adjustment of compression wheel, ensure the stability of weft yarn tension, simultaneously, due to the action of compression spring, the movement of sliding block in longitudinal slide groove is more stable, effectively reduces the mechanical vibration and noise caused by rapid adjustment, further improves the operation stability and service life of equipment;

[0025] 4. The utility model discloses in the tension adjusting assembly utilizes the adjustment bolt rotation when relative side plate upward or downward movement, thereby promotes the adjusting plate to compression spring and presses or reduces pressure, realizes the fine adjustment of weft yarn tension, not only can satisfy the demand of different weft yarn tension, still can ensure that equipment still can keep stable working condition in high -speed operation, reduce the fabric flaw caused because weft yarn tension fluctuation, improve production efficiency and product quality.

[0026] 5. The utility model discloses a dust suction port on the top of the shell can effectively separate the dust, hairiness and other impurities generated in the weft yarn conveying process from the sealed shell, avoids the influence of the impurities on the weft yarn quality, reduces the frequency of manual cleaning, improves the neatness of the production environment, reduces the equipment failure caused by dust pollution, prolongs the service life of the equipment, and further improves the overall production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0028] Figure 1 It is the section structure schematic diagram of the yarn gripper for air jet loom of the utility model.

[0029] In the drawing, 1, shell;2, side plate;3, yarn inlet;4, yarn outlet;5, yarn gripper assembly;51, fixed wheel;52, pressure wheel;6, tensioning assembly;61, sliding block;62, fixed pin two;63, tensioning wheel;64, longitudinal sliding slot;65, compression spring;7, connecting rod mechanism;71, connecting rod one;72, connecting rod two;73, drive rod one;74, drive rod two;75, fixed pin one;9, tension adjustment assembly;91, adjustment plate;92, adjustment bolt;10, dust suction port;11, dust suction pipe. DETAILED DESCRIPTION

[0030] The technical scheme of the utility model will be described clearly and completely in combination with specific embodiments. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0031] As Figure 1 Shown in a kind of yarn gripper for air jet loom, including sealed shell 1, the side plate 2 on the opposite side of the shell 1 is equipped with yarn inlet 3 and yarn outlet 4 respectively, and the side plate 2 adjacent to the side plate 2 where yarn inlet 3 and yarn outlet 4 are located is equipped with two groups of yarn gripper assembly 5 in parallel, two yarn gripper assembly 5 are horizontally parallel, and tensioning assembly 6 is arranged between two yarn gripper assembly 5, the tensioning assembly 6 is located below two yarn gripper assembly 5, and the tensioning assembly 6 controls two groups of yarn gripper assembly 5 to be gripped or loosened to weft yarn automatically according to tensioning force by connecting rod mechanism 7.

[0032] Further, the two yarn clamping wheel assemblies 5 comprise a fixed wheel 51 and a pressing wheel 52, the fixed wheel 51 is rotationally connected with the side plate 2, and the pressing wheel 52 is located above the fixed wheel 51 and is connected with the connecting rod mechanism 7.

[0033] Further, the connecting rod mechanism 7 comprises a connecting rod one 71 and a connecting rod two 72, the lower ends of the connecting rod one 71 and the connecting rod two 72 are respectively rotationally connected with the pressing wheels 52 in the two groups of yarn clamping assemblies, the upper ends of the connecting rod one 71 and the connecting rod two 72 are respectively rotationally connected with fixed pins one 75 on the side plate 2, the middle parts of the connecting rod one 71 and the connecting rod two 72 are respectively rotationally connected with one ends of a driving rod one 73 and a driving rod two 74, and the other ends of the driving rod one 73 and the driving rod two 74 are rotationally connected with fixed pins two 62 on the sliding block 61 in the tensioning assembly 6.

[0034] Further, the tensioning assembly 6 comprises a tensioning wheel 63, the tensioning wheel 63 is rotationally connected with the sliding block 61, the sliding block 61 is slidingly matched with a longitudinal sliding groove 64 on the side plate 2, and a compression spring 65 is arranged between the upper end of the sliding block 61 and the top of the longitudinal sliding groove 64.

[0035] Further, a tension adjusting assembly 9 is further arranged, the tension adjusting assembly 9 comprises an adjusting plate 91 arranged between the top of the compression spring 65 and the top of the longitudinal sliding groove 64, an adjusting bolt 92 is arranged on the side, away from the compression spring 65, of the adjusting plate 91, the lower end of the adjusting bolt 92 abuts against the adjusting plate 91, and the upper end of the adjusting bolt 92 penetrates through the side plate 2 and is threadedly connected with the side plate 2.

[0036] Further, the fixed wheel 51, the pressing wheel 52 and the tensioning wheel 63 are all rubber wheels.

[0037] Further, the top of the shell 1 is provided with a dust suction port 10, and the dust suction port 10 is connected with a dust remover through a dust suction pipe 11.

[0038] The working principle of the utility model is as follows:

[0039] The weft yarn enters the sealed shell 1 from the yarn inlet 3, passes between the two groups of yarn clamping wheel assemblies 5 and is introduced into the main nozzle from the yarn outlet 4, is wound around the tensioning assembly 6 after passing between the two groups of yarn clamping wheel assemblies 5 and is tensioned by the tensioning assembly 6, so that the yarn can maintain constant tension to meet the weft insertion operation requirement, when the weft yarn is inserted, the tensioning assembly 6 is subjected to the tension of the weft yarn, at this time, the connecting rod mechanism 7 controls the two yarn clamping wheel assemblies 5 to automatically loosen, so as to avoid that the yarn resistance is too large when the weft yarn is inserted and affects the weft insertion operation; when the weft insertion is completed, the end of the yarn close to the main nozzle loses the traction, at this time, the tensioning assembly 6 loses the effect of the weft yarn tension, and the connecting rod mechanism 7 controls the yarn clamping wheel assembly 5 to automatically clamp the weft yarn, so as to avoid that the yarn is untwisted or retracted.

[0040] When the weft tension increases, the tension wheel 63 in the tension assembly 6 is subjected to the increased weft tension, the tension wheel 63 directly acts on the sliding block 61, the sliding block 61 is lifted along the longitudinal sliding groove 64, the weft tension is automatically adjusted to an appropriate size after the upward movement of the sliding block 61, and the sliding block 61 is upwardly moved, the driving rod one 73 and the driving rod two 74 drive the connecting rod one 71 and the connecting rod two 72 to reversely rotate around the fixed pin one 75, the connecting rod one 71 and the connecting rod two 72 reversely rotate, the pressing wheel 52 connected to the bottom of the connecting rod one 71 and the connecting rod two 72 is away from the fixed wheel 51, so that the weft is loosened;

[0041] When the yarn near the one end of the main nozzle is subjected to the reduced traction or the weft insertion is completed and the yarn near the one end of the main nozzle loses the traction, the tension wheel 63 in the tension assembly 6 is subjected to the reduced weft tension or the lost weft tension, at this time, the sliding block 61 is lowered along the longitudinal sliding groove 64, the weft tension is automatically adjusted to an appropriate size after the downward movement of the sliding block 61, and the sliding block 61 is downwardly moved, the driving rod one 73 and the driving rod two 74 drive the connecting rod one 71 and the connecting rod two 72 to oppositely rotate around the fixed pin one 75, the connecting rod one 71 and the connecting rod two 72 oppositely rotate, the pressing wheel 52 connected to the bottom of the connecting rod one 71 and the connecting rod two 72 is close to the fixed wheel 51, so that the weft is clamped;

[0042] The utility model discloses a tension assembly 6 and connecting rod mechanism 7 cooperate to realize the accurate control of weft tension, guarantee that yarn tension is always constant, not only can effectively guarantee the normal operation of weft insertion operation, but also can effectively avoid the problem, such as broken yarn or uneven weave, caused by weft tension fluctuation, improves weaving efficiency and cloth surface quality, simultaneously, the structure of the device is simple, adjusts the flexible weft shuttle more fluent, effectively reduces the downtime in the weaving process, improves production efficiency.

Claims

1. A gripper for air-jet looms, characterized in that: The utility model provides a kind of weft yarn tensioning device, including sealed shell (1), the side plate (2) of the opposite two sides of the shell (1) is equipped with yarn inlet (3) and yarn outlet (4) respectively, and two groups of yarn clamping wheel assemblies (5) are arranged in parallel on the side plate (2) adjacent to the side plate (2) where yarn inlet (3) and yarn outlet (4) are located, two yarn clamping wheel assemblies (5) are horizontally parallel, and tensioning assembly (6) is arranged between two yarn clamping wheel assemblies (5), the tensioning assembly (6) is located below two yarn clamping wheel assemblies (5), and the tensioning assembly (6) controls two groups of yarn clamping wheel assemblies (5) to clamp or loosen weft yarn automatically according to tensioning force by connecting rod mechanism (7).

2. A gripper for air-jet looms as claimed in claim 1, characterized in that: Two yarn clamping wheel assemblies (5) include fixed wheel (51) and compression wheel (52), the fixed wheel (51) is rotatably connected with the side plate (2), and the compression wheel (52) is located above the fixed wheel (51), and the compression wheel (52) is connected with the connecting rod mechanism (7).

3. A gripper for air-jet looms as claimed in claim 2, characterized in that: The connecting rod mechanism (7) includes connecting rod one (71) and connecting rod two (72), the lower end of connecting rod one (71) and connecting rod two (72) is rotatably connected with the compression wheel (52) in two groups of yarn clamping assemblies respectively, the upper end of connecting rod one (71) and connecting rod two (72) is rotatably connected with fixed pin one (75) on the side plate (2) respectively, the middle part of connecting rod one (71) and connecting rod two (72) is rotatably connected with one end of drive rod one (73) and drive rod two (74) respectively, and the other end of drive rod one (73) and drive rod two (74) is rotatably connected with fixed pin two (62) on the slider (61) in the tensioning assembly (6).

4. The gripper according to claim 3, characterized in that: The tensioning assembly (6) includes tensioning wheel (63), the tensioning wheel (63) is rotatably connected with the slider (61), the slider (61) is slidably connected with the longitudinal sliding slot (64) on the side plate (2), and the upper end of the slider (61) is provided with compression spring (65) between the top of the longitudinal sliding slot (64).

5. The gripper according to claim 4, characterized in that: It also includes tension adjusting assembly (9), the tension adjusting assembly (9) includes adjusting plate (91) arranged between the top of the compression spring (65) and the top of the longitudinal sliding slot (64), the side away from the compression spring (65) of the adjusting plate (91) is equipped with adjusting bolt (92), the lower end of the adjusting bolt (92) abuts on the adjusting plate (91), and the upper end of the adjusting bolt (92) penetrates the side plate (2) and is threadedly connected with the side plate (2).

6. A gripper for air-jet looms according to claim 5, characterized in that: The fixed wheel (51), compression wheel (52) and tensioning wheel (63) are all rubber wheels.

7. The gripper according to claim 1, characterized in that: The top of the shell (1) is equipped with dust suction port (10), and the dust suction port (10) is connected with dust collector through dust suction pipe (11).

Images