Gray fabric air-jet loom and method for reducing length of slitter edge yarn of air-jet loom

Abstract

The invention relates to the technical field of air-jet looms, and provides a gray fabric air-jet loom and method for reducing the length of waste selvage yarn of the air-jet loom.The gray fabric air-jet loom for reducing the length of the waste selvage yarn of the air-jet loom.The gray fabric air-jet loom comprises a loom body; the weaving machine comprises a weaving machine body and further comprises conveying rollers, a reed body, a supporting shell, a traction mechanism and a cutting mechanism, the multiple conveying rollers used for conveying woven cloth are installed on the weaving machine body, the reed body is installed on the weaving machine body, and a reed groove used for allowing weft to penetrate through is formed in the reed body; the supporting shell is fixedly arranged on the side wall of the loom body, the supporting shell is aligned with the reed groove, and a supporting opening is formed in the side wall of the side, close to the reed body, of the supporting shell. The technical problem that in the prior art, the length of waste edge yarn is large due to the fact that the tension of weft is inconvenient to adjust in the traction process of the weft is solved.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to the technical field of air jet looms, and in particular, to an air jet loom and method for reducing the length of waste yarn of the air jet loom. Background Art

[0002] The air jet loom is a shuttleless loom that uses a jet airflow to pull the weft yarn through the shed. The air jet loom uses compressed air as the weft insertion medium and pulls the weft yarn through the high-speed airflow generated by the jet airflow. When the loom is working, the weft yarn is first pre-stored by the weft storage device and released according to the set length. Then the main nozzle is opened on one side of the loom to release a high-speed airflow to introduce the weft yarn into the shed. At the same time, on the other side of the shed, the auxiliary nozzles will be opened in turn to form a relay airflow, which continuously supplements and stabilizes the flight of the weft yarn, so that it can smoothly pass through the entire shed and interweave with the warp yarn to form a fabric.

[0003] During the use of the air jet loom, the movement of the weft thread relies on the airflow ejected from the auxiliary nozzle to pull the weft thread, which easily causes the problem of insufficient weft thread tension. In addition, the weft thread tension has an important influence on the length of the waste yarn. If the weft thread tension is too small, it may cause the weft thread to relax during the weft insertion process, thereby increasing the length of the waste yarn. Summary of the invention

[0004] To overcome the above defects, the embodiments of the present disclosure provide a grey cloth jet loom and method for reducing the length of the waste yarn of the jet loom, which solves the technical problem in the prior art that it is inconvenient to adjust the tension of the weft thread during the traction process, resulting in a large length of the waste yarn.

[0005] According to one aspect, at least one embodiment of the present disclosure provides a jet loom for grey cloth that reduces the length of waste yarn of the jet loom, comprising a loom body, and also comprising a conveying roller, a reed body, a support shell, a traction mechanism and a cutting mechanism, wherein the loom body is provided with a plurality of conveying rollers for conveying the woven cloth, the loom body is provided with the reed body, the reed body is provided with a reed groove for passing the weft thread, the support shell is fixedly arranged on the side wall of the loom body, the support shell is aligned with the reed groove, wherein the side wall of the support shell close to the reed body is provided with a support opening, the traction mechanism is arranged on the support shell for pulling the weft thread, and the cutting mechanism is arranged in the support shell for cutting the weft thread.

[0006] Preferably, the traction mechanism comprises: An air suction hood, the air suction hood is fixedly and communicatively arranged on a side wall of the supporting shell away from the reed body; A fan, wherein the fan is mounted on the surface of the loom body, and an input end of the fan is connected to the suction hood; A tension adjustment mechanism is arranged in the supporting shell and is used to adjust the tension of the weft.

[0007] Furthermore, the tension adjustment mechanism comprises: A support frame, wherein the support frame is slidably disposed on both sides of the support opening in the support shell, and traction wheels are rotatably disposed on both sides of the support frame; A bidirectional screw, the bidirectional screw being rotatably disposed in the support housing, and the bidirectional screw penetrating the support frame through threaded engagement; A first micro motor, wherein the first micro motor is mounted on the supporting housing, and an output end of the first micro motor is fixedly connected to the bidirectional screw; A fixed cover, the fixed cover is fixed on the inner top wall of the supporting shell, a tension detector is installed in the fixed cover, and the tension detector extends out of the fixed cover; Wherein, a display screen is installed on the loom body, and the display screen is electrically connected to the tension detector.

[0008] A rotating mechanism is arranged on the supporting frame and is used for driving one of the traction wheels to rotate.

[0009] Furthermore, the rotating mechanism includes: A first cavity, wherein the first cavity is opened in the supporting frame, a first bevel gear is rotatably arranged on a side wall of the first cavity, and a connecting rod is fixedly arranged between the first bevel gear and the adjacent traction wheel; a second bevel gear, the second bevel gear being rotatably disposed on the inner top wall of the first cavity, wherein a first driving opening is opened on the support frame, and the first driving opening passes through the first cavity; A first driving mechanism is disposed in the supporting frame and is used for driving the second bevel gear to rotate.

[0010] Furthermore, the first driving mechanism includes: a first driving prism, the first driving prism being rotatably disposed in the supporting shell, the first driving prism passing through the first driving opening; Wherein, the first driving prism passes through the second bevel gear and is slidably connected with the second bevel gear; A second micro motor is mounted on the supporting shell, and an output end of the second micro motor is fixedly connected to the first driving prism.

[0011] On the basis of the above scheme, the cutting mechanism comprises: An adjusting cover, wherein the adjusting cover is fixedly arranged on the inner top wall of the supporting shell, a cutting block is slidably arranged in the adjusting cover, and a cutting groove is provided on the cutting block; a cutting wheel, the cutting wheel being rotatably disposed in the cutting groove; A lifting mechanism, the lifting mechanism is arranged between the adjustment cover and the cutting block, and is used to adjust the position of the cutting block; A cutting mechanism is disposed in the cutting block and is used to drive the cutting wheel to rotate during the movement of the cutting block.

[0012] On the basis of the above scheme, the lifting mechanism comprises: A threaded rod, the threaded rod is rotatably disposed on the bottom of the adjusting cover, wherein the threaded rod extends into the cutting block through threaded engagement; A third micro motor is mounted on the supporting housing, and an output end of the third micro motor is fixedly connected to the threaded rod.

[0013] On the basis of the above scheme, the cutting mechanism comprises: A second cavity, wherein the cutting block is provided with the second cavity at one side of the cutting groove, a third bevel gear is rotatably provided on the side wall of the second cavity close to the cutting wheel, and a driving rod is fixedly provided between the third bevel gear and the cutting wheel; a fourth bevel gear, the fourth bevel gear being rotatably disposed on the inner top wall of the second cavity, the fourth bevel gear being meshed with the third bevel gear; A second driving port, the second driving port is opened on the inner top wall of the second cavity, and the second driving port passes through the adjustment cover and the inner top wall of the support shell; A second driving mechanism, wherein the second driving mechanism is disposed in the adjusting cover and is used for driving the third bevel gear to rotate.

[0014] On the basis of the above solution, the second driving mechanism comprises: a second driving prism, wherein the second driving prism is fixedly disposed on the fourth bevel gear, and the second driving prism passes through the second driving opening; a first gear, the first gear being rotatably disposed at the bottom of the adjustment cover, the second driving prism penetrating the first gear and being slidably connected to the first gear; A second gear, wherein the second gear is fixedly disposed on the threaded rod, and the second gear is meshed with the first gear.

[0015] A method for using a grey fabric air jet loom for reducing the length of waste yarn of the air jet loom, using the above-mentioned scheme, a grey fabric air jet loom for reducing the length of waste yarn of the air jet loom, comprising the following steps: Step 1: Start the loom and control the loom body to make the weft thread pass through the reed groove; Step 2: Weft thread pulling, controlling the fan to work, the fan generates negative pressure in the suction hood and the support shell, thereby pulling the weft thread into the support shell through the suction force at the support port and making the weft thread in a taut state; Step three, tension adjustment, control the operation of the first micro motor, the operation of the first micro motor can drive the bidirectional screw to rotate, and at the same time, the two support frames are driven to move relative to each other through the thread cooperation between the bidirectional screw and the support frame, and the weft is clamped by the traction wheel, and then the first driving prism can be driven to rotate through the operation of the second micro motor, and at the same time, the second bevel gear is driven to rotate through the sliding cooperation relationship between the first driving prism and the second bevel gear, and then the first bevel gear and the traction wheel are driven to rotate through the meshing of the second bevel gear and the first bevel gear, and then the friction between the traction wheel and the weft is used to tighten the weft, and the tension of the weft is detected by the tension detector until the preset weft tension is reached; Step 4, weft cutting, the threaded rod can be driven to rotate through the operation of the third micro motor, and the cutting block and the cutting wheel can be driven to move through the thread cooperation between the threaded rod and the cutting block. During the movement of the cutting wheel, the rotation of the threaded rod can drive the second gear to rotate, and the engagement of the second gear with the first gear can drive the first gear to rotate, and then the sliding cooperation relationship between the first gear and the second driving prism can drive the second driving prism and the fourth bevel gear to rotate, so that the engagement of the fourth bevel gear with the third bevel gear can drive the third bevel gear and the cutting wheel to rotate, so that the cutting of excess weft can be achieved through the movement and rotation of the cutting wheel.

[0016] The beneficial effects of the embodiments of the present disclosure are: 1. In the present disclosure, through the setting of the traction mechanism, the operation of the fan generates negative pressure in the suction hood and the support shell, so that the weft is pulled into the support shell by the suction force at the support port and the weft is in a tensioned state. Then, the weft can be tightened by the rotation and movement of the traction wheel and the tension of the weft is detected by the tension detector until the preset weft tension is reached, so as to facilitate the adjustment of the tension of the weft; 2. In the present disclosure, by setting the cutting mechanism, the third micro motor can drive the cutting block and the cutting wheel to move. During the movement of the cutting wheel, the cutting wheel can be driven to rotate through the transmission of the first gear, the second gear, the second driving prism and the fourth bevel gear, so that the excess weft can be cut by the movement and rotation of the cutting wheel, thereby further reducing the length of the waste yarn; 3. In the present invention, by arranging the conveying roller, the reed body, the supporting shell, the traction mechanism and the cutting mechanism, it is convenient to adjust the tension of the weft thread by the operation of the first micro motor and the second micro motor, and at the same time, the weft thread can be cut by the operation of the third micro motor, thereby solving the technical problem in the prior art that it is not convenient to adjust the tension of the weft thread during the traction process, resulting in a large length of waste yarn. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments of the present disclosure. Obviously, the drawings described below are only some exemplary embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on the contents of the exemplary embodiments of the present disclosure and these drawings without creative work.

[0018] Figure 1 It is a structural schematic diagram of a grey cloth air jet loom for reducing the length of waste yarn of the air jet loom in one embodiment of the present disclosure; Figure 2 for Figure 1 A local enlarged structural diagram of position A in the embodiment; Figure 3 for Figure 1 A schematic structural diagram of a cross-section view of the support housing in an embodiment of the present invention; Figure 4 for Figure 1 A schematic cross-sectional view of the support frame in the embodiment; Figure 5 for Figure 1 A schematic structural diagram of a cross-section of the rotating mechanism in an embodiment of the present invention; Figure 6 for Figure 1 A schematic structural diagram of a section view of a cutting mechanism in an embodiment of the present invention; Figure 7 for Figure 1 In the embodiment Figure 6 A schematic diagram of the local enlarged structure at B in the middle; Figure 8 for Figure 1 A schematic cross-sectional view of the second driving mechanism in the embodiment; Fig. 9 for Figure 1 A schematic diagram of a cross-sectional structure of a fixed cover in an embodiment of the present invention.

[0019] In the figure: 1, loom body; 2, conveyor roller; 3, reed body; 4, reed groove; 5, support shell; 6, suction hood; 7, fan; 8, support frame; 9, traction wheel; 10, bidirectional screw; 11, first micro motor; 12, fixed cover; 13, tension detector; 14, first bevel gear; 15, second bevel gear; 16, first drive prism; 17, second micro motor; 18, adjustment cover; 19, cutting block; 20, cutting wheel; 21, threaded rod; 22, third micro motor; 23, third bevel gear; 24, fourth bevel gear; 25, second drive port; 26, second drive prism; 27, first gear; 28, second gear. DETAILED DESCRIPTION The present disclosure is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure, rather than to limit the present disclosure.

[0020] In order to simplify the drawings, only the parts related to the disclosure are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0021] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.

[0022] In the present disclosure, unless otherwise expressly specified and limited, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “above”, and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0023] In the description of this embodiment, terms such as "up", "down", "left", and "right" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0024] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0025] Embodiment 1, as Figure 1-Figure 9 As shown, it shows a jet loom for grey cloth that reduces the length of waste yarn of the jet loom in one embodiment of the present disclosure, including a loom body 1, and also including conveying rollers 2, a reed body 3, a supporting shell 5, a traction mechanism and a cutting mechanism. A plurality of conveying rollers 2 for conveying woven cloth are installed on the loom body 1, a reed body 3 is installed on the loom body 1, a reed groove 4 for passing the weft thread is opened on the reed body 3, the supporting shell 5 is fixedly arranged on the side wall of the loom body 1, and the supporting shell 5 is aligned with the reed groove 4, wherein a supporting opening is opened on the side wall of the supporting shell 5 close to the reed body 3, the traction mechanism is arranged on the supporting shell 5 for pulling the weft thread, and the cutting mechanism is arranged in the supporting shell 5 for cutting the weft thread.

[0026] Reference Figure 1-Figure 3 The traction mechanism includes an air suction hood 6, a fan 7 and a tension adjustment mechanism. The air suction hood 6 is fixed and connected to the side wall of the support shell 5 away from the reed body 3. The fan 7 is installed on the surface of the loom body 1. The input end of the fan 7 is connected to the air suction hood 6. The tension adjustment mechanism is arranged in the support shell 5 for adjusting the tension of the weft. Specifically, the operation of the fan 7 generates negative pressure in the air suction hood 6 and the support shell 5, so that the weft is pulled into the support shell 5 through the suction force at the support port and the weft is in a taut state.

[0027] Reference Figure 3-Figure 5The tension adjustment mechanism includes a support frame 8, a bidirectional screw 10, a first micro motor 11, a fixed cover 12 and a rotating mechanism. The support frame 8 is slidably arranged on both sides of the support opening in the support shell 5. The traction wheels 9 are rotatably arranged on both sides of the support frame 8. The bidirectional screw 10 is rotatably arranged in the support shell 5. The bidirectional screw 10 penetrates the support frame 8 through threaded cooperation. The first micro motor 11 is installed on the support shell 5. The output end of the first micro motor 11 is fixedly connected to the bidirectional screw 10. The fixed cover 12 is fixed on the inner top wall of the support shell 5. A tension detector 13 is installed in the fixed cover 12, and the tension detector 13 extends out of the fixed cover 12, wherein a display screen is installed on the loom body 1, and the display screen is electrically connected to the tension detector 13, and a rotating mechanism is arranged on the support frame 8, and is used to drive one of the traction wheels 9 to rotate, and the rotating mechanism includes a first cavity, a second bevel gear 15 and a first driving mechanism, and the first cavity is opened in the support frame 8, and a first bevel gear 14 is rotatably arranged on the side wall of the first cavity, and a connecting rod is fixedly arranged between the first bevel gear 14 and the adjacent traction wheel 9, and the second bevel gear 15 is rotatably arranged on the inner top wall of the first cavity, wherein a first driving port is opened on the support frame 8, and the first driving port passes through the first cavity, and the first driving mechanism is arranged on the support The frame 8 is used to drive the second bevel gear 15 to rotate. The first driving mechanism includes a first driving prism 16 and a second micro motor 17. The first driving prism 16 is rotatably arranged in the support shell 5. The first driving prism 16 passes through the first driving port, wherein the first driving prism 16 passes through the second bevel gear 15 and is slidably connected with the second bevel gear 15. The second micro motor 17 is installed on the support shell 5, and the output end of the second micro motor 17 is fixedly connected with the first driving prism 16. Specifically, the operator controls the first micro motor 11 to work, and the work of the first micro motor 11 can drive the bidirectional screw 10 to rotate. At the same time, through the bidirectional screw The threaded cooperation between the rod 10 and the support frame 8 drives the two support frames 8 to move relative to each other and clamps the weft thread through the traction wheel 9. Then, the first driving prism 16 can be driven to rotate through the operation of the second micro motor 17. At the same time, the second bevel gear 15 is driven to rotate through the sliding cooperation relationship between the first driving prism 16 and the second bevel gear 15, and then the first bevel gear 14 and the traction wheel 9 are driven to rotate through the engagement of the second bevel gear 15 with the first bevel gear 14. The friction force between the traction wheel 9 and the weft thread is used to tighten the weft thread, and the tension of the weft thread is detected by the tension detector 13 until the preset weft thread tension is reached.

[0028] Reference Figure 6-Figure 9The cutting mechanism includes an adjusting cover 18, a cutting wheel 20, a lifting mechanism and a cutting mechanism. The adjusting cover 18 is fixedly arranged on the inner top wall of the supporting shell 5. A cutting block 19 is slidably arranged in the adjusting cover 18. A cutting groove is provided on the cutting block 19. The cutting wheel 20 is rotatably arranged in the cutting groove. The lifting mechanism is arranged between the adjusting cover 18 and the cutting block 19 for adjusting the position of the cutting block 19. The cutting mechanism is arranged in the cutting block 19 for driving the cutting wheel 20 to rotate during the movement of the cutting block 19. The lifting mechanism includes a threaded rod 21 and a third micro motor 22. The threaded rod 21 is rotatably arranged at the bottom of the adjusting cover 18, wherein the threaded rod 21 extends into the bottom of the adjusting cover 18 through threaded engagement. In the cutting block 19, the third micro motor 22 is installed on the supporting shell 5, the output end of the third micro motor 22 is fixedly connected to the threaded rod 21, the cutting mechanism includes a second cavity, a fourth bevel gear 24, a second drive port 25 and a second drive mechanism, the cutting block 19 is located on one side of the cutting groove and has a second cavity, the side wall of the second cavity close to the cutting wheel 20 is rotatably provided with a third bevel gear 23, a drive rod is fixedly provided between the third bevel gear 23 and the cutting wheel 20, the fourth bevel gear 24 is rotatably provided on the inner top wall of the second cavity, the fourth bevel gear 24 is meshed with the third bevel gear 23, the second drive port 25 is provided on the inner top wall of the second cavity, and the second drive port 25 passes through the adjustment cover 18 to and the inner top wall of the supporting shell 5, the second driving mechanism is arranged in the adjusting cover 18, and is used to drive the third bevel gear 23 to rotate, the second driving mechanism includes a second driving prism 26, a first gear 27 and a second gear 28, the second driving prism 26 is fixedly arranged on the fourth bevel gear 24, the second driving prism 26 passes through the second driving port 25, the first gear 27 is rotatably arranged on the cover bottom of the adjusting cover 18, the second driving prism 26 passes through the first gear 27 and is slidably connected with the first gear 27, the second gear 28 is fixedly arranged on the threaded rod 21, and the second gear 28 is meshed with the first gear 27. Specifically, the threaded rod 21 can be driven to rotate by the operation of the third micro motor 22, At the same time, the cutting block 19 and the cutting wheel 20 are driven to move through the threaded cooperation between the threaded rod 21 and the cutting block 19. During the movement of the cutting wheel 20, the rotation of the threaded rod 21 can drive the second gear 28 to rotate. At the same time, the engagement of the second gear 28 with the first gear 27 can drive the first gear 27 to rotate, and then the sliding cooperation relationship between the first gear 27 and the second driving prism 26 can drive the second driving prism 26 and the fourth bevel gear 24 to rotate, so that the engagement of the fourth bevel gear 24 with the third bevel gear 23 can drive the third bevel gear 23 and the cutting wheel 20 to rotate, so that the cutting of the excess weft can be achieved through the movement and rotation of the cutting wheel 20.

[0029] Embodiment 2: Embodiment 2 of the present application is supplemented on the basis of Embodiment 1, and is a method for using a grey cloth air jet loom to reduce the length of waste yarn of the air jet loom, comprising the following steps: Step 1: Start the loom and control the loom body 1 to work so that the weft thread passes through the reed groove 4; Step 2: Weft thread pulling: Control the fan 7 to work. The fan 7 generates negative pressure in the suction hood 6 and the support shell 5, so that the weft thread is pulled into the support shell 5 through the suction force at the support port and the weft thread is in a taut state. Step three, tension adjustment, control the first micro motor 11 to work, the work of the first micro motor 11 can drive the bidirectional screw 10 to rotate, and at the same time, the two support frames 8 are driven to move relative to each other through the thread cooperation between the bidirectional screw 10 and the support frame 8, and the weft is clamped by the traction wheel 9, and then the first driving prism 16 can be driven to rotate through the work of the second micro motor 17, and at the same time, the second bevel gear 15 is driven to rotate through the sliding cooperation relationship between the first driving prism 16 and the second bevel gear 15, and then the first bevel gear 14 and the traction wheel 9 are driven to rotate through the meshing of the second bevel gear 15 and the first bevel gear 14, and then the friction between the traction wheel 9 and the weft is used to tighten the weft, and the tension of the weft is detected by the tension detector 13 until the preset weft tension is reached; Step 4, weft cutting, the work of the third micro motor 22 can drive the threaded rod 21 to rotate, and the threaded cooperation between the threaded rod 21 and the cutting block 19 can drive the cutting block 19 and the cutting wheel 20 to move. During the movement of the cutting wheel 20, the rotation of the threaded rod 21 can drive the second gear 28 to rotate, and the engagement of the second gear 28 with the first gear 27 can drive the first gear 27 to rotate, and then the sliding cooperation relationship between the first gear 27 and the second driving prism 26 can drive the second driving prism 26 and the fourth bevel gear 24 to rotate, so that the engagement of the fourth bevel gear 24 with the third bevel gear 23 can drive the third bevel gear 23 and the cutting wheel 20 to rotate, so that the cutting of the excess weft is achieved through the movement and rotation of the cutting wheel 20.

[0030] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure rather than to limit it. Although the present disclosure has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present disclosure may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present disclosure, which should be included in the scope of the claims of the present disclosure.

Claims

1. A grey cloth air jet loom for reducing the length of waste yarn of the air jet loom, comprising a loom body (1), characterized in that: Also includes: Conveying rollers (2), a plurality of conveying rollers (2) for conveying woven fabrics being installed on the loom body (1); A reed body (3), the reed body (3) being mounted on the loom body (1), the reed body (3) being provided with a reed groove (4) for allowing the weft thread to pass through; A support shell (5), the support shell (5) being fixedly arranged on a side wall of the loom body (1), the support shell (5) being aligned with the reed groove (4), wherein a support opening is provided on a side wall of the support shell (5) close to the reed body (3); A traction mechanism, the traction mechanism being arranged on the support shell (5) and being used for traction of the weft thread; A cutting mechanism, wherein the cutting mechanism is arranged in the supporting shell (5) and is used for cutting the weft thread.

2. A grey cloth air jet loom for reducing the length of waste yarn of the air jet loom according to claim 1, characterized in that: The traction mechanism comprises: An air suction hood (6), the air suction hood (6) being fixedly and communicatively arranged on a side wall of the support shell (5) away from the reed body (3); A fan (7), the fan (7) being mounted on the surface of the loom body (1), and the input end of the fan (7) being in communication with the air suction hood (6); A tension adjustment mechanism, wherein the tension adjustment mechanism is arranged in the support shell (5) and is used to adjust the tension of the weft thread.

3. A grey cloth air jet loom for reducing the length of waste yarn of the air jet loom according to claim 2, characterized in that: The tension adjustment mechanism comprises: A support frame (8), wherein the support frame (8) is slidably disposed on both sides of the support opening in the support shell (5), and traction wheels (9) are rotatably disposed on both sides of the support frame (8); a bidirectional screw (10), the bidirectional screw (10) being rotatably disposed in the support housing (5), the bidirectional screw (10) penetrating the support frame (8) through threaded engagement; a first micro motor (11), the first micro motor (11) being mounted on the supporting housing (5), the output end of the first micro motor (11) being fixedly connected to the bidirectional screw rod (10); A fixed cover (12), the fixed cover (12) being fixed on the inner top wall of the supporting shell (5), a tension detector (13) being installed in the fixed cover (12), and the tension detector (13) extending out of the fixed cover (12); A rotating mechanism, the rotating mechanism is arranged on the supporting frame (8) and is used to drive one of the traction wheels (9) to rotate.

4. A grey cloth air jet loom for reducing the length of waste yarn of the air jet loom according to claim 3, characterized in that: The rotating mechanism comprises: A first cavity, the first cavity being opened in the support frame (8), a first bevel gear (14) being rotatably arranged on a side wall of the first cavity, and a connecting rod being fixedly arranged between the first bevel gear (14) and the adjacent traction wheel (9); a second bevel gear (15), the second bevel gear (15) being rotatably disposed on the inner top wall of the first cavity, wherein a first drive opening is provided on the support frame (8), and the first drive opening passes through the first cavity; A first driving mechanism, the first driving mechanism is arranged in the supporting frame (8) and is used to drive the second bevel gear (15) to rotate.

5. A grey cloth air jet loom for reducing the length of waste yarn of the air jet loom according to claim 4, characterized in that: The first driving mechanism comprises: a first driving prism (16), the first driving prism (16) being rotatably disposed in the supporting shell (5), the first driving prism (16) penetrating the first driving opening; Wherein, the first driving prism (16) passes through the second bevel gear (15) and is slidably connected to the second bevel gear (15); A second micro motor (17), wherein the second micro motor (17) is mounted on the supporting housing (5), and an output end of the second micro motor (17) is fixedly connected to the first driving prism (16).

6. A grey cloth air jet loom for reducing the length of waste yarn of the air jet loom according to claim 5, characterized in that: The cutting mechanism comprises: An adjustment cover (18), the adjustment cover (18) being fixedly arranged on the inner top wall of the support shell (5), a cutting block (19) being slidably arranged in the adjustment cover (18), and a cutting groove being formed on the cutting block (19); A cutting wheel (20), the cutting wheel (20) being rotatably disposed in the cutting groove; a lifting mechanism, the lifting mechanism being arranged between the adjustment cover (18) and the cutting block (19) and being used for adjusting the position of the cutting block (19); A cutting mechanism, the cutting mechanism being arranged in the cutting block (19) and being used for driving the cutting wheel (20) to rotate during the movement of the cutting block (19).

7. A grey cloth air jet loom for reducing the length of waste yarn of the air jet loom according to claim 6, characterized in that: The lifting mechanism comprises: a threaded rod (21), the threaded rod (21) being rotatably disposed on the bottom of the adjustment cover (18), wherein the threaded rod (21) extends into the cutting block (19) through threaded engagement; A third micro motor (22), the third micro motor (22) being mounted on the supporting housing (5), and an output end of the third micro motor (22) being fixedly connected to the threaded rod (21).

8. A grey cloth air jet loom for reducing the length of waste yarn of the air jet loom according to claim 7, characterized in that: The cutting mechanism comprises: a second cavity, wherein the cutting block (19) is provided with the second cavity on one side of the cutting groove, a third bevel gear (23) is rotatably provided on a side wall of the second cavity close to the cutting wheel (20), and a driving rod is fixedly provided between the third bevel gear (23) and the cutting wheel (20); a fourth bevel gear (24), the fourth bevel gear (24) being rotatably disposed on the inner top wall of the second cavity, the fourth bevel gear (24) being meshed with the third bevel gear (23); a second driving opening (25), the second driving opening (25) being formed on the inner top wall of the second cavity, and the second driving opening (25) penetrating the adjustment cover (18) and the inner top wall of the support shell (5); A second driving mechanism, the second driving mechanism is arranged in the adjustment cover (18) and is used to drive the third bevel gear (23) to rotate.

9. A grey cloth air jet loom for reducing the length of waste yarn of the air jet loom according to claim 8, characterized in that: The second driving mechanism comprises: a second driving prism (26), the second driving prism (26) being fixedly disposed on the fourth bevel gear (24), the second driving prism (26) passing through the second driving opening (25); a first gear (27), the first gear (27) being rotatably disposed at the bottom of the adjustment cover (18), the second driving prism (26) penetrating the first gear (27) and being slidably connected to the first gear (27); A second gear (28), the second gear (28) is fixedly arranged on the threaded rod (21), and the second gear (28) is meshed with the first gear (27).

10. A method for using a grey fabric air jet loom for reducing the length of waste yarn of the air jet loom, using the grey fabric air jet loom for reducing the length of waste yarn of the air jet loom according to claim 9, characterized in that: The following steps are involved: S1, start the machine, control the loom body (1) to work so that the weft thread passes through the reed groove (4); S2, weft thread pulling, controlling the fan (7) to work, the fan (7) working to generate negative pressure in the suction hood (6) and the support shell (5), thereby pulling the weft thread into the support shell (5) through the suction force at the support opening and putting the weft thread in a taut state; S3, tension adjustment, controlling the operation of the first micro motor (11), the operation of the first micro motor (11) can drive the bidirectional screw (10) to rotate, and at the same time, the threaded fit between the bidirectional screw (10) and the support frame (8) drives the two support frames (8) to move relative to each other and clamps the weft through the traction wheel (9), then the operation of the second micro motor (17) can drive the first driving prism (16) to rotate, and at the same time, the sliding fit between the first driving prism (16) and the second bevel gear (15) drives the second bevel gear (15) to rotate, and then the meshing of the second bevel gear (15) with the first bevel gear (14) drives the first bevel gear (14) and the traction wheel (9) to rotate, and then the friction between the traction wheel (9) and the weft is used to tighten the weft, and the tension of the weft is detected by the tension detector (13) until the preset weft tension is reached; S4, weft cutting, the threaded rod (21) can be driven to rotate by the operation of the third micro motor (22), and the cutting block (19) and the cutting wheel (20) can be driven to move by the threaded engagement between the threaded rod (21) and the cutting block (19). During the movement of the cutting wheel (20), the rotation of the threaded rod (21) can drive the second gear (28) to rotate, and the meshing of the second gear (28) with the first gear (27) can drive the first gear (27) to rotate, and then the sliding engagement between the first gear (27) and the second driving prism (26) can drive the second driving prism (26) and the fourth bevel gear (24) to rotate, so that the meshing of the fourth bevel gear (24) with the third bevel gear (23) can drive the third bevel gear (23) and the cutting wheel (20) to rotate, so that the cutting of the excess weft is achieved by the movement and rotation of the cutting wheel (20).

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