Weft missing compensation device of water-jet loom

Abstract

The weft missing compensation device comprises a fixing plate and guide wheels which are installed on the outer wall of the front end of the fixing plate and are close to the left side and the right side respectively, and a weft main body is arranged between the circular outer walls of the upper ends of the two guide wheels. A high-speed camera is arranged on the outer wall of the front end of the fixing plate to check the breakage condition of a weft yarn body, standby weft yarn is arranged on the left side of the high-speed camera, a movable rod is arranged on the upper side of the standby weft yarn, and a yarn clamp is fixedly connected to the outer wall of the left end of the movable rod to clamp the standby weft yarn. The outer wall of the rear end of the movable rod is fixedly connected with a driver to drive the movable rod to turn over, by installing a driving motor, an outer roller and a limiting groove, after a weft yarn body is broken, the broken end of the weft yarn body can be wound by the outer roller, and continuous operation of the water-jet loom is kept; and the condition that one end of the broken weft yarn main body is lapped on the peripheral weft yarn main body is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field related to water jet looms, and in particular relates to a weft missing compensation device for water jet looms. Background Art

[0002] The weft missing compensation device in the water jet loom is very important. It can effectively solve the problem of weft missing during the weaving process and ensure the smooth progress of the weaving process. The weft missing phenomenon refers to the fact that the warp and weft yarns are not interwoven in the predetermined way during the weaving process, resulting in broken or defective fabrics. However, after the weft yarn breaks, the broken weft yarn will contact and overlap the surrounding adjacent weft yarns, resulting in overlapping of the surrounding weft yarns. Utility Model Content

[0003] The utility model aims to provide a weft missing compensation device for a water jet loom to solve the problem in the background art that the broken weft yarns will contact and overlap the surrounding adjacent weft yarns, resulting in the overlapping of the surrounding weft yarns.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a weft missing compensation device for a water jet loom, comprising a fixing plate and guide wheels installed on the front outer wall of the fixing plate and close to the left and right sides respectively;

[0005] A weft yarn body is arranged between the upper circular outer walls of the two guide wheels;

[0006] A high-speed camera is provided on the front outer wall of the fixing plate to check the fracture condition of the weft yarn body;

[0007] A spare weft yarn is arranged on the left side of the high-speed camera, a movable rod is arranged on the upper side of the spare weft yarn, a wire clamp is fixedly connected to the outer wall of the left end of the movable rod to clamp the spare weft yarn, and a driver is fixedly connected to the outer wall of the rear end of the movable rod to drive the movable rod to flip;

[0008] The rear end outer wall of the fixed plate is fixedly connected with a driving motor, the driving motor is connected to an external power supply, the front end of the driving motor is transmission-connected with an outer roller, and a plurality of limiting grooves for the weft yarn body to pass through are equidistantly provided inside the circular outer wall of the outer roller.

[0009] Preferably, the inner part of the outer roller is fixedly connected to the inner roller to provide a winding position for the broken weft yarn body, and the front end outer wall of the drive motor is fixedly connected to a drive shaft that passes forward through the inner roller to drive the inner and outer rollers to rotate.

[0010] Preferably, cutting openings are provided at both the front and rear ends of the limiting groove to allow scissors to enter the interior and cut the weft yarn body wound around the inner roller. A fixing base is provided at the other end of the driving shaft to keep the inner roller, the outer roller, and the guiding wheel in a flush state.

[0011] Preferably, an electrostatic coating is applied to the circular outer wall of the inner roller to adsorb the weft yarn body, and the rotational speed of the driving motor is less than that of the guiding wheel.

[0012] Preferably, a fixing box is provided on the left side of the high-speed camera, and a winding shaft is arranged inside the fixing box to wind the spare weft yarn.

[0013] Preferably, a signal receiver is fixedly connected to the outer wall at the right end of the fixing box to control the operation of the driver, and an image processor is fixedly connected to the outer wall at the front end of the high-speed camera to detect the state of the weft yarn body and send a signal to the signal receiver after detecting a broken yarn.

[0014] Preferably, a fixing frame is fixedly connected to the outer wall at the upper end of the fixing box to limit the position of the movable rod, and a through opening penetrating up and down is provided on the outer wall at the upper end of the fixing box for the spare weft yarn to pass through.

[0015] Preferably, when the spare weft yarn adheres to the guiding wheel, it is guided by the guiding wheel in an electrostatic adsorption manner, and the guiding wheel provides power to drive the spare weft yarn to move to the right.

[0016] Compared with the prior art, the present utility model provides a weft absence compensation device for a water jet loom, having the following beneficial effects:

[0017] By installing a driving motor, an outer roller, and a limiting groove, when a broken yarn occurs during the process of the weft yarn body being guided by the guiding wheel, since the weft yarn body passes through the limiting groove in the outer roller and the outer roller is in a rotating state driven by the driving motor, after the weft yarn body breaks, the broken end of the weft yarn body will be wound by the outer roller to keep the water jet loom running continuously, avoiding the situation where one end of the broken weft yarn body is placed on the surrounding weft yarn bodies, preventing uneven fabric or large defects, and at the same time reducing the frequency of stopping production. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a weft absence compensation device for a water jet loom according to the present utility model.

[0019] Figure 2 It is a partial front-view sectional structural diagram of the inner roller area of the present utility model.

[0020] Figure 3 It is a partial structural diagram of the outer roller area of the present utility model.

[0021] Figure 4 This is a partial side view structural schematic diagram of the fixing plate area of the present utility model.

[0022] In the figure: 1, fixing plate; 2, guiding wheel; 3, weft yarn body; 4, fixing frame; 5, driver; 6, movable rod; 7, wire clamp; 8, spare weft yarn; 9, fixing box; 10, winding shaft; 11, signal receiver; 12, high-speed camera; 13, image processor; 14, driving shaft; 15, driving motor; 16, inner roller; 17, outer roller; 18, limiting groove; 19, wire cutting opening; 20, fixing seat. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] The present utility model provides a weft yarn missing weft compensation device for a water jet loom as Figures 1-3 shown, which includes a fixing plate 1 and guiding wheels 2 installed on the front outer wall of the fixing plate 1 and respectively close to the left and right sides;

[0025] A weft yarn body 3 is arranged between the upper circular outer walls of the two guiding wheels 2;

[0026] A high-speed camera 12 is arranged on the front outer wall of the fixing plate 1 to view the breaking condition of the weft yarn body 3;

[0027] A spare weft yarn 8 is arranged on the left side of the high-speed camera 12. A movable rod 6 is arranged on the upper side of the spare weft yarn 8. A wire clamp 7 is fixedly connected to the left end outer wall of the movable rod 6 to clamp the spare weft yarn 8. A driver 5 is fixedly connected to the rear end outer wall of the movable rod 6 to drive the movable rod 6 to rotate. When a yarn break occurs while the guiding wheel 2 drives the weft yarn body 3 to continuously move, the high-speed camera 12 will capture the corresponding yarn break picture among multiple weft yarn bodies 3 and send out a signal to enable the driver 5 at the corresponding position to start working, driving the movable rod 6 to rotate clockwise. During the rotation of the movable rod 6, it will drive the wire clamp 7 clamping the spare weft yarn 8 to move synchronously. After the wire clamp 7 approaches the guiding wheel 2, the spare weft yarn 8 will be released. At this time, the spare weft yarn 8 can be adsorbed on the guiding wheel 2, and the guiding wheel 2 drives the spare weft yarn 8 to be guided to the next process. When the weft yarn body 3 is manually continued, the movable rod 6 is reset, and the wire clamp 7 clamps the spare weft yarn 8 again;

[0028] A drive motor 15 is fixedly connected to the outer wall at the rear end of the fixed plate 1. The drive motor 15 is connected to an external power supply. A drive shaft 14 that penetrates forward into the inner roller 16 is fixedly connected to the front end outer wall of the drive motor 15 to drive the inner roller 16 and the outer roller 17 to rotate. When the weft yarn body 3 breaks, the broken part of the weft yarn body 3 moves along the inner part of the limiting groove 18 due to fitting, and after breaking, it will be wound by the rotating outer roller 17, preventing the broken weft yarn body 3 from floating and draping over the surrounding weft yarn bodies 3.

[0029] As Figure 2 and Figure 3 shown, an inner roller 16 is fixedly connected inside the outer roller 17 to provide a winding position for the broken weft yarn body 3. A drive shaft 14 that penetrates forward into the inner roller 16 is fixedly connected to the front end outer wall of the drive motor 15 to drive the inner roller 16 and the outer roller 17 to rotate.

[0030] The broken weft yarn body 3 will wind around the outer wall of the inner roller 16 and limit the position of the broken weft yarn body 3. When the outer roller 17 rotates, the drive shaft 14 is driven by the drive motor 15 to rotate, thereby driving the inner roller 16 and the outer roller 17 to rotate to wind the broken weft yarn body 3.

[0031] As Figure 3 and Figure 4 shown, cutting slots 19 are provided at both the front and rear ends of the limiting groove 18 to allow scissors to enter and cut the weft yarn body 3 wound around the inner roller 16. A fixed seat 20 is provided at the other end of the drive shaft 14 to keep the inner roller 16 and the outer roller 17 flush with the guide wheel 2. An electrostatic coating is applied to the outer wall of the inner roller 16 to adsorb the weft yarn body 3, and the rotational speed of the drive motor 15 is less than that of the guide wheel 2.

[0032] When the staff performs a yarn continuation operation at the yarn break position, the scissors can be inserted through the cutting slot 19 to cut the weft yarn body 3 wound on the inner roller 16 for the yarn continuation operation, and at the same time, the wound weft yarn body 3 is cleaned. When the yarn breaks, the broken end of the weft yarn body 3 on the side contacting the inner roller 16 is adsorbed on the inner roller 16 by the electrostatic coating for winding operation.

[0033] As Figure 1 shown, a fixed box 9 is provided on the left side of the high-speed camera 12. A take-up reel 10 for taking up the spare weft yarn 8 is provided inside the fixed box 9. A signal receiver 11 is fixedly connected to the right end outer wall of the fixed box 9 to control the operation of the driver 5. An image processor 13 is fixedly connected to the front end outer wall of the high-speed camera 12 to detect the state of the weft yarn body 3 and send a signal to the signal receiver 11 after detecting a yarn break.

[0034] The position of the winding spare weft yarn 8 is restricted and provided by the winding shaft 10 inside the fixed box 9. After the high-speed camera 12 captures the broken yarn image and processes it through the image processor 13, the data is transmitted to the signal receiver 11, so that the signal receiver 11 emits a signal to make the driver 5 drive the movable rod 6 to perform the weft yarn continuation work.

[0035] As Figure 1 shown, a fixed frame 4 is fixedly connected to the outer wall of the upper end of the fixed box 9 to restrict the position of the movable rod 6. A through hole penetrating up and down is opened on the outer wall of the upper end of the fixed box 9 for the spare weft yarn 8 to pass through. When the spare weft yarn 8 adheres to the guide wheel 2, it is guided by the guide wheel 2 in an electrostatic adsorption manner. The guide wheel 2 provides power to drive the spare weft yarn 8 to move to the right.

[0036] The position of the movable rod 6 is restricted by the fixed frame 4, and the rotation center of the movable rod 6 is provided. When the spare weft yarn 8 is guided, it passes through the through hole opened on the fixed box 9. When the spare weft yarn 8 adheres to the guide wheel 2, it is electrostatically adsorbed on the guide wheel 2 for the guide wheel 2 to guide the spare weft yarn 8 to move to the next process.

[0037] The implementation principle of this embodiment is as follows: When the weft yarn body 3 breaks during the continuous movement driven by the guide wheel 2, the high-speed camera 12 will capture the corresponding broken yarn image among multiple weft yarn bodies 3 and emit a signal to turn on the corresponding driver 5 to drive the movable rod 6 to rotate clockwise. During the rotation of the movable rod 6, the wire clamp 7 clamping the spare weft yarn 8 will move synchronously. After the wire clamp 7 approaches the guide wheel 2, the spare weft yarn 8 will be released. At this time, the spare weft yarn 8 can be adsorbed on the guide wheel 2 and is guided by the guide wheel 2 to the next process. When the weft yarn body 3 is manually continued, the movable rod 6 is reset and the wire clamp 7 clamps the spare weft yarn 8 again. When the weft yarn body 3 breaks, the broken weft yarn body 3 moves along the inner side of the limiting groove 18 and will be wound by the rotating outer roller 17 after breaking, avoiding the situation where the broken weft yarn body 3 drifts and hangs on the surrounding weft yarn bodies 3.

[0038] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A weft absence compensation device for a water jet loom, comprising a fixing plate (1) and guide wheels (2) mounted on the front outer wall of the fixing plate (1) and close to the left and right sides respectively; A weft yarn body (3) is arranged between the upper circular outer walls of the two guide wheels (2); A high-speed camera (12) is arranged on the front outer wall of the fixing plate (1) to check the breaking condition of the weft yarn body (3); A spare weft yarn (8) is arranged on the left side of the high-speed camera (12). An active rod (6) is arranged on the upper side of the spare weft yarn (8). A wire clip (7) is fixedly connected to the left outer wall of the active rod (6) to clamp the spare weft yarn (8), and a driver (5) is fixedly connected to the rear outer wall of the active rod (6) to drive the active rod (6) to turn over; It is characterized in that: A driving motor (15) is fixedly connected to the rear outer wall of the fixing plate (1). The driving motor (15) is connected to an external power supply. A roller (17) is drivingly connected to the front end of the driving motor (15). A plurality of limiting grooves (18) for the weft yarn body (3) to pass through are equidistantly arranged inside the circular outer wall of the roller (17).

2. The weft absence compensation device for a water jet loom according to claim 1, characterized in that: An inner roller (16) is fixedly connected inside the roller (17) to provide a winding position for the broken weft yarn body (3). A driving shaft (14) that penetrates forward into the inner roller (16) is fixedly connected to the front outer wall of the driving motor (15) to drive the inner roller (16) and the roller (17) to rotate.

3. The weft absence compensation device for a water jet loom according to claim 2, characterized in that: Cutting openings (19) are arranged at both the front and rear ends of the limiting groove (18) to provide an entrance for scissors to enter the inside and cut the weft yarn body (3) wound on the inner roller (16). A fixing seat (20) is arranged at the other end of the driving shaft (14) to keep the inner roller (16) and the roller (17) in a flush state with the guide wheels (2).

4. A weft absence compensation device for a water jet loom according to claim 3, characterized in that: An electrostatic coating is applied to the circular outer wall of the inner roller (16) to adsorb the weft yarn body (3), and the rotation speed of the driving motor (15) is less than the rotation speed of the guide wheels (2).

5. The weft absence compensation device for a water jet loom according to claim 1, characterized in that: A fixed box (9) is arranged on the left side of the high-speed camera (12). A winding shaft (10) is arranged inside the fixed box (9) to wind the spare weft yarn (8).

6. The weft absence compensation device for a water jet loom according to claim 5, characterized in that: A signal receiver (11) is fixedly connected to the right outer wall of the fixed box (9) to control the operation of the driver (5). An image processor (13) is fixedly connected to the front outer wall of the high-speed camera (12) to detect the state of the weft yarn body (3) and send a signal to the signal receiver (11) after detecting a broken yarn.

7. A weft absence compensation device for a water jet loom according to claim 5, characterized in that: A fixing frame (4) is fixedly connected to the upper outer wall of the fixed box (9) to limit the position of the active rod (6). A through opening that penetrates up and down is arranged on the upper outer wall of the fixed box (9) for the spare weft yarn (8) to pass through.

8. The weft absence compensation device for a water jet loom according to claim 1, characterized in that: When the spare weft yarn (8) adheres to the guide wheels (2), it is guided by the guide wheels (2) by means of electrostatic adsorption, and the guide wheels (2) provide power to drive the spare weft yarn (8) to move to the right.

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