Broken weft automatic stop device of air jet loom

Abstract

The utility model discloses an air jet loom broken weft automatic stop device which comprises a mounting plate, an n-shaped structure supporting frame is fixedly connected to the middle of the top side of the mounting plate, and a monitoring assembly is arranged on the inner side of the supporting frame. The monitoring assembly comprises a sliding rod slidably connected to the interior of the supporting frame, a limiting plate fixedly connected to the top of the sliding rod, a first mounting frame fixedly connected to the bottom of the sliding rod, a first roller mounted on the inner side of the first mounting frame, and a pressure sensor fixedly connected to the top of the supporting frame and located below the limiting plate. The bottom of the center of the surface of the first roller makes contact with the weft, and two guide assemblies are symmetrically arranged on the top of the mounting plate and located on the two sides of the supporting frame and used for supporting the weft. Through the structure, when weft is broken, the first roller loses support to drive the limiting plate to move to be in contact with the pressure sensor, a pressure sensor trigger signal serves as a shutdown instruction to control the air jet loom to stop running, the weaving quality problem caused by weft breaking can be effectively prevented, and the structure is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of loom machinery, in particular to a weft-breaking automatic stop device for an air-jet loom. Background Art

[0002] Air jet looms are essential equipment in the textile industry. They are shuttleless looms that use a jet of air to pull the weft thread through the shed. The operating principle is that air is used as the weft insertion medium, with the jet of compressed air generating frictional traction on the weft thread, pulling it through the shed. The jet of air creates a flow that inserts the weft and weaves the fabric.

[0003] Currently, during the operation of an air jet loom, the weft may break due to various reasons. If the weft breakage is not detected and stopped in time, the air jet loom, which is still in normal operation, may easily cause product quality problems and affect the normal operation of production. Therefore, those skilled in the art have provided an automatic stop device for weft breakage in an air jet loom to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to provide a weft break automatic stop device for an air jet loom. When the normal weft thread is moved and transmitted, the first roller can be supported so that the limit plate on the top of the slide rod is located above the pressure sensor. When the weft thread breaks, the first roller loses the support of the weft thread and moves downward. The moving first roller synchronously drives the limit plate to move and contact the pressure sensor. The pressure sensor triggers a signal to be transmitted to the controller, and the controller uses this signal as a stop command to control the air jet loom to stop running, thereby realizing the weft break automatic stop operation of the air jet loom, effectively preventing the weaving quality problem caused by weft breakage, and the utility model has a simple structure and strong practicality, which is conducive to a wide range of applications on air jet looms.

[0005] To achieve the above-mentioned purpose, a weft-breaking automatic stop device for an air-jet loom is provided, comprising a mounting plate, an N-shaped structure support frame fixedly connected to the middle of the top side of the mounting plate, a monitoring component is provided on the inner side of the support frame, the monitoring component comprises a sliding rod slidably connected to the inside of the support frame, a limit plate fixedly connected to the top of the sliding rod, a first mounting frame fixedly connected to the bottom of the sliding rod, a first roller mounted on the inner side of the first mounting frame and a pressure sensor fixedly connected to the top of the support frame and located below the limit plate, the bottom of the center of the surface of the first roller contacts the weft thread, two guide assemblies are symmetrically provided on the top of the mounting plate and on both sides of the support frame, and the two guide assemblies are used to support the weft thread.

[0006] According to the automatic weft-breaking stop device of an air-jet loom, the guide assembly includes a second mounting bracket fixedly connected to the top of the mounting plate and a second roller mounted on the inner side of the second mounting bracket, and the tops of the centers of the surfaces of the two second rollers are in contact with the weft.

[0007] According to the automatic weft-breaking stop device of an air-jet loom, the top and one side of the outer side of the support frame are respectively fixedly connected with an audible and visual alarm and a controller, and the pressure sensor and the audible and visual alarm are both electrically connected to the controller.

[0008] According to the described automatic weft stop device of an air-jet loom, a pressing assembly is provided above each of the two second rollers, and the pressing assembly includes a fixed frame fixedly connected to the top of the second mounting frame and arranged in an L-shaped structure, a connecting rod slidably connected to the inside of the fixed frame, a third mounting frame fixedly connected to the bottom of the connecting rod, a third roller installed on the inner side of the third mounting frame, and a spring sleeved on the outer side of the connecting rod.

[0009] According to the automatic weft-breakage stop device of the air-jet loom, an infrared alarm is fixedly connected to one side of the interior of the support frame and below the first roller, and the infrared alarm is electrically connected to the controller.

[0010] According to the weft-breaking automatic stop device for an air-jet loom, the centers of the tops of the two second rollers and the center of the bottom of the first roller are arranged on the same horizontal line.

[0011] The utility model has the following beneficial effects:

[0012] 1. Compared with the prior art, the automatic stop device for weft breakage of an air jet loom can support the first roller when the normal weft thread is moving and transmitted so that the limit plate on the top of the slide rod is located above the pressure sensor. When the weft thread breaks, the first roller loses the support of the weft thread and moves downward. The moving first roller synchronously drives the limit plate to move and contact the pressure sensor. The pressure sensor triggers a signal to be transmitted to the controller, which uses this signal as a stop command to control the air jet loom to stop running, thereby realizing the automatic stop operation of the air jet loom when the weft thread breaks, effectively preventing weaving quality problems caused by weft breakage, and having a simple structure and strong practicality, which is conducive to a wide range of applications on air jet looms.

[0013] 2. Compared with the existing technology, this kind of weft breakage automatic stop device of the air-jet loom can realize the clamping operation of the weft thread by setting a holding component and working in conjunction with the second roller, so as to facilitate the clamping and positioning operation of the broken weft thread after the weft thread is broken, and facilitate the operator to directly operate the thread end to re-route the thread, etc., which is more convenient to use.

[0014] 3. Compared with the existing technology, this automatic stop device for weft breakage of an air jet loom is equipped with an infrared alarm under the first roller. After the first roller falls, the infrared light emitted by the infrared alarm is rebounded and received. The infrared alarm detects an abnormality and transmits a signal to the controller, so that the controller can control the air jet loom to stop according to the received signal. It further monitors the state of the weft thread and has higher sensitivity to ensure the automatic stop operation of the air jet loom after the weft thread breaks.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a first overall structural diagram of a weft-breaking automatic stop device for an air-jet loom according to the present invention;

[0018] Figure 2 This is a second overall structural diagram of a weft-breaking automatic stop device for an air-jet loom according to the present invention;

[0019] Figure 3 This is a schematic diagram of the main cross-sectional structure of a weft-breaking automatic stop device for an air-jet loom according to the present invention;

[0020] Figure 4 This utility model is a kind of automatic stop device for weft breaking of air jet loom. Figure 1 Schematic diagram of the anti-amplification structure at point A in the middle.

[0021] Legend:

[0022] 1. Mounting plate; 2. Support frame; 3. Sliding rod; 4. Limiting plate; 5. First mounting frame; 6. First roller; 7. Pressure sensor; 8. Second mounting frame; 9. Second roller; 10. Fixed frame; 11. Connecting rod; 12. Third mounting frame; 13. Third roller; 14. Spring; 15. Sound and light alarm; 16. Controller; 17. Infrared alarm. DETAILED DESCRIPTION

[0023] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0024] Reference Figure 1 and Figure 2, the utility model embodiment of a weft-breaking automatic stop device for an air-jet loom comprises a mounting plate 1, a support frame 2 of an N-shaped structure is fixedly provided in the middle of the top side of the mounting plate 1, and a monitoring device is provided on the inner side of the support frame 2; the monitoring component comprises a slide bar 3 slidably connected to the inside of the support frame 2, a limit plate 4 fixedly connected to the top of the slide bar 3, a first mounting frame 5 fixedly connected to the bottom of the slide bar 3, a first roller 6 installed on the inner side of the first mounting frame 5 and a pressure sensor 7 fixedly connected to the top of the support frame 2 and located below the limit plate 4. The bottom of the center of the surface of the first roller 6 contacts the weft thread. Two symmetrical rollers are provided on the top of the mounting plate 1 and on both sides of the support frame 2. The guide assembly is used to support the weft thread. Specifically, when the weft thread passes through the bottom of the first roller 6 and moves, the normal weft thread can support the first roller 6 so that the limit plate 4 on the top of the slide bar 3 is located above the pressure sensor 7. When the weft thread breaks, the first roller 6 loses the support of the weft thread and moves downward. The moving first roller 6 synchronously drives the limit plate 4 to move and contact the pressure sensor 7. The trigger signal of the pressure sensor 7 can be used as a stop command to control the air jet loom to stop running, realizing the automatic stop operation of the air jet loom when the weft breaks, effectively preventing the weaving quality problems caused by weft breakage, and has a simple structure and strong practicality, which is conducive to a wide range of applications on air jet looms.

[0025] Reference Figure 1 and Figure 2 The guide assembly consists of a second mounting frame 8 fixed to the top of the mounting plate 1 and a second roller 9 installed on the inner side of the second mounting frame 8. The center tops of the surfaces of the two second rollers 9 are in contact with the weft. Specifically, the weft is passed through the top of the second roller 9. Under the action of the second roller 9, the moving weft can be guided and the weft can be better supported, so that the weft can support the first roller 6.

[0026] Reference Figure 1 and Figure 2 The top and one side of the outer side of the support frame 2 are respectively fixedly connected with an audible and visual alarm 15 and a controller 16. The pressure sensor 7 and the audible and visual alarm 15 are electrically connected to the controller 16. Specifically, after the air jet loom is electrically connected to the controller 16, when the signal triggered by the pressure sensor 7 is transmitted to the controller 16, the controller 16 can control the audible and visual alarm 15 to operate and emit an audible and visual alarm according to the received signal, so as to remind the operator to deal with it in time. The synchronous controller 16 controls the operating status of the air jet loom to stop the air jet loom.

[0027] Reference Figure 1 、 Figure 2 and Figure 4A pressing assembly is provided above the two second rollers 9, and the pressing assembly includes a fixing frame 10 fixedly connected to the top of the second mounting frame 8 and arranged in an L-shaped structure, a connecting rod 11 slidably connected to the inside of the fixing frame 10, a third mounting frame 12 fixedly connected to the bottom of the connecting rod 11, a third roller 13 installed on the inner side of the third mounting frame 12 and a spring 14 sleeved on the outer side of the connecting rod 11. Specifically, under the action of the spring 14, the third mounting frame 12 can be pushed downward, so that the third roller 13 can be closely fitted to the top of the weft, and the clamping operation of the weft can be realized under the action of the third roller 13, so as to facilitate the clamping and positioning operation of the broken weft after the weft is broken, so that the operator can directly operate the thread end to re-route the thread, etc., which is more convenient to use.

[0028] Reference Figure 2 and Figure 3 On one side of the interior of the support frame 2, and below the first roller 6, an infrared alarm 17 is fixedly connected. The infrared alarm 17 is also electrically connected to the controller 16. Specifically, the weft thread breaks, causing the first roller 6 to fall and move to the side of the infrared alarm 17. The infrared ray emitted by the infrared alarm 17 hits the first roller 6 and rebounds to be received by the probe. The probe detects an abnormality and transmits a signal to the controller 16, so that the controller 16 can control the air jet loom to stop running according to the received signal, further monitoring the status of the weft thread, with higher sensitivity, to ensure the automatic stop operation of the air jet loom after the weft thread breaks.

[0029] The centers of the tops of the two second rollers 9 and the center of the bottom of the first roller 6 are arranged on the same horizontal line. The second rollers 9 and the first roller 6 located on the same horizontal line can ensure linear guidance of the weft, which is beneficial to the smooth transmission of the weft.

[0030] Working principle: The weft thread of the air jet loom is passed through the top of the second roller 9, then through the bottom of the first roller 6, and then through the top of another second roller 9. When the normal weft thread is moved and transmitted, the first roller 6 can be supported so that the limit plate 4 on the top of the slide bar 3 is located above the pressure sensor 7. When the weft thread breaks, the first roller 6 loses the support of the weft thread and moves downward. The moving first roller 6 synchronously drives the limit plate 4 to move and contact the pressure sensor 7. The pressure sensor 7 triggers the signal to be transmitted to the controller 16. The controller 16 uses this signal as a stop command to control the air jet loom to stop running, realizing the automatic stop operation of the air jet loom when the weft is broken, effectively preventing the weaving quality problems caused by weft breakage, and the structure is simple and practical, which is conducive to a wide range of applications on air jet looms.

[0031] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A weft-breaking automatic stop device for an air jet loom, characterized in that: The invention comprises a mounting plate (1), wherein an n-shaped structure support frame (2) is fixedly connected to the middle of the top side of the mounting plate (1), and a monitoring component is arranged on the inner side of the support frame (2), wherein the monitoring component comprises a slide bar (3) slidably connected to the inside of the support frame (2), a limit plate (4) fixedly connected to the top of the slide bar (3), a first mounting frame (5) fixedly connected to the bottom of the slide bar (3), a first roller (6) mounted on the inner side of the first mounting frame (5), and a pressure sensor (7) fixedly connected to the top of the support frame (2) and located below the limit plate (4), wherein the bottom of the center of the surface of the first roller (6) contacts the weft line, and two guide assemblies are symmetrically arranged on the top of the mounting plate (1) and on both sides of the support frame (2), and the two guide assemblies are used to support the weft line.

2. The weft-breaking automatic stop device of an air jet loom according to claim 1, characterized in that: The guide assembly comprises a second mounting frame (8) fixedly connected to the top of the mounting plate (1) and a second roller (9) mounted on the inner side of the second mounting frame (8), and the tops of the centers of the surfaces of the two second rollers (9) are in contact with the weft.

3. The weft-breaking automatic stop device of an air jet loom according to claim 2, characterized in that: The top and one side of the outer side of the support frame (2) are respectively fixedly connected with an audible and visual alarm (15) and a controller (16), and the pressure sensor (7) and the audible and visual alarm (15) are both electrically connected to the controller (16).

4. The weft-breaking automatic stop device of an air jet loom according to claim 3, characterized in that: A holding assembly is provided above each of the two second rollers (9), the holding assembly comprising a fixing frame (10) fixedly connected to the top of the second mounting frame (8) and arranged in an L-shaped structure, a connecting rod (11) slidably connected to the inside of the fixing frame (10), a third mounting frame (12) fixedly connected to the bottom of the connecting rod (11), a third roller (13) installed on the inner side of the third mounting frame (12), and a spring (14) sleeved on the outer side of the connecting rod (11).

5. The weft-breaking automatic stop device for an air jet loom according to claim 4, characterized in that: An infrared alarm (17) is fixedly connected to one side of the interior of the support frame (2) and located below the first roller (6), and the infrared alarm (17) is electrically connected to the controller (16).

6. The weft-breaking automatic stop device for an air jet loom according to claim 5, characterized in that: The centers of the tops of the two second rollers (9) and the center of the bottom of the first roller (6) are arranged on the same horizontal line.

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