Automatic power-off and stop protection system for broken or empty warp yarns of circular weaving machine

Abstract

The application discloses a kind of warp yarns of circular weaving machine are broken or empty after automatic power-off shutdown protection system, including warp frame, guide device, warp tension adjusting structure and circular weaving machine, guide device includes guide plate and mounting bracket, mounting bracket is equipped with electrically conductive mounting pole and guide rod, electrically conductive mounting pole and guide rod are respectively positive pole or negative pole, gravity hook hammer is rotatably arranged on electrically conductive mounting pole, gravity hook hammer can be rotated to be abutted with guide rod to form closed loop.The application has simple structure, reasonable design, by changing the rotating position of gravity hook hammer, when the warp yarns on warp frame are broken or empty, gravity hook hammer is abutted with guide rod, circuit is conducted, controller controls circular weaving machine to stop working, the tail end of warp yarns will always be between warp frame and warp tension adjusting structure, will not cause weft yarn breakage and warp yarn production accident because the tail end of warp yarns enters circular weaving machine, so that production is safer.

Description

Technical Field

[0001] This invention relates to the field of circular loom technology, and more specifically, to an automatic power-off and shutdown protection system for a circular loom after the warp yarns break or are released. Background Technology

[0002] In the weaving operation of a circular loom, the warp yarns are first unwound from the warp creel (see the warp creel disclosed in CN215668391U for details), then guided by the yarn guide device (see CN211394842U for details), and then enter the circular loom (see CN108914334A for details).

[0003] However, in actual production operations, after the warp unwinding bobbin on the warp beam has finished unwinding the warp yarns, the circular loom is still in operation. If the machine is not stopped or an alarm is not triggered, the remaining warp yarns will directly enter the circular loom. Since the tail ends of the warp yarns have no traction, they will enter the circular loom uncontrollably, potentially damaging adjacent warp and weft yarns, thus posing a safety hazard. Furthermore, after the warp yarns have been unwound, the machine needs to be stopped so that a new warp bobbin can be placed on the warp beam and connected to the tail yarn of the previous warp bobbin. Summary of the Invention

[0004] This invention overcomes the shortcomings of the prior art and provides an automatic power-off and shutdown protection system for circular looms after warp yarn breakage or emptying. After the warp yarn passes through the gravity hook, when the warp yarn on the warp yarn frame breaks or is completely released, the gravity hook abuts against the conductive component, connecting the circuit. The controller then controls the circular loom to power off and stop working. The tail end of the warp yarn will always remain between the warp yarn frame and the warp yarn tension adjustment structure, preventing production accidents caused by the tail end of the warp yarn entering the circular loom, thus making production safer.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An automatic power-off and shutdown protection system for a circular loom after warp yarn breakage or venting includes a warp yarn scaffold, a yarn guide device, a warp yarn tension adjustment structure, and the circular loom. The warp yarn is unwound from the warp yarn scaffold and enters the circular loom via the yarn guide device and the warp yarn tension adjustment structure. The yarn guide device includes a yarn guide plate and a mounting frame. The mounting frame is equipped with a conductive mounting component and a conductive component, which are respectively a positive terminal rod or a negative terminal rod. A gravity hook is rotatably mounted on the conductive mounting component. The gravity hook can rotate to abut against the conductive component to form a closed circuit. The warp yarn tension adjustment structure includes a yarn guide roller and a pressure roller, and also includes a controller located in the circuit. When the warp yarn breaks or vents, the gravity hook will abut against the conductive component. The controller can control the on / off state of the circular loom drive motor.

[0007] Preferably, the controller includes a delay module.

[0008] Preferably, the conductive element is a conductive sheet or a conductive wire.

[0009] Preferably, the gravity hook hammer is provided with a spring part.

[0010] Preferably, the mounting frame is equipped with an insulating rod, and the gravity hook hammer can be rotated to abut against the insulating rod.

[0011] Preferably, the guide wire device is located between the warp wire frame and the warp wire tension adjustment structure.

[0012] The beneficial effects of this invention are:

[0013] This invention has a simple structure and reasonable design. By changing the rotation position of the gravity hook hammer, when the warp yarn on the warp frame breaks or is completely released, the gravity hook hammer abuts against the conductive component, conducts the circuit, and the controller controls the circular loom to cut off the power and stop working. The tail end of the warp yarn will always remain between the warp frame or the guide device and the warp yarn tension adjustment structure, preventing production accidents caused by the tail end of the warp yarn entering the circular loom, such as breaking the weft yarn and warp yarn, thus making production safer. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a specific embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram illustrating the structure of the wire guide device in a specific embodiment of the present invention. Figure 1 ;

[0016] Figure 3 This is a schematic diagram illustrating the structure of the wire guide device in a specific embodiment of the present invention. Figure 2 ;

[0017] Figure 4 This is a schematic diagram illustrating the structure of a gravity hook hammer in a specific embodiment of the present invention.

[0018] In the diagram: 100, warp yarn; 1, warp yarn frame; 2, yarn guide device; 21, yarn guide plate; 22, mounting frame; 221, conductive mounting component; 222, conductive component; 223, insulating rod; 3, circular loom; 4, gravity hook hammer; 41, spring section; 5, warp yarn tension adjustment structure; 51, yarn guide roller; 52, pressure roller. Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figure 1-4 As shown, an automatic power-off and shutdown protection system for a circular loom after warp yarn breakage or emptying includes a warp yarn frame 1, a yarn guide device 2, a warp yarn tension adjustment structure 5, and a circular loom 3. The yarn guide device 2 includes a yarn guide plate 21 and a mounting frame 22. The mounting frame 22 is provided with a conductive mounting component 221 and a conductive component 222. The conductive mounting component 221 and the conductive component 222 are respectively a positive terminal or a negative terminal, that is, one of the conductive mounting component 221 and the conductive component 222 is connected to the positive terminal and the other is connected to the negative terminal. A rotating part is provided on the conductive mounting component 221. The gravity hook 4 can rotate to abut against the conductive element 222 to form a closed circuit. The warp tension adjustment structure 5 includes a guide roller 51 and a pressure roller 52, and also includes a controller located in the circuit. When the gravity hook 4 abuts against the conductive element 222, the controller can control the on / off state of the drive motor of the circular loom 3. A spring part 41 is provided on the gravity hook 4. An insulating rod 223 is provided on the mounting frame 22. The gravity hook 4 can rotate to abut against the insulating rod 223. The guide device 2 is located between the warp frame 1 and the warp tension adjustment structure 5.

[0021] By adopting the above technical solution, in this invention, the warp adjustment structure 5 is located between the guide device 2 and the circular loom 1. During operation, the warp 100 is wound out from the warp frame 1, passes through the guide plate 21 and the gravity hook 4. The warp 100, passing through the gravity hook 4, pulls the gravity hook 4 to a parallel state. After the warp 100 runs out of power, the gravity hook 4 falls and rotates until it contacts the conductive element 222, forming a closed circuit. This causes the controller to cut off the power to the drive motor of the circular loom 3, stopping the loom 3. During this stop, the main loom will continue to operate due to inertia, while the pressure roller 52 and the guide roller 51 will feed the warp at a uniform speed along with the inertia of the main loom, preventing the remaining warp 100 from being pulled in by the inertia of the main loom and entangled with the shuttle, thus reducing safety hazards. Until the main unit of the circular loom 3 stops and ceases to rotate due to inertia, the tail of the warp yarn 100 will always be positioned between the warp yarn tension adjustment structure 5 and the gravity hook 4, facilitating the connection with the remaining warp yarn 100 when placing a new warp yarn bobbin. Both the warp yarn frame 1 and the warp yarn tension adjustment structure 5 serve to tension the warp yarn 100. When the warp yarn 100 on the warp yarn frame 1 runs empty and loses tension, the tension is maintained solely by the warp yarn tension adjustment structure 5. The spring portion 41 on the gravity hook 4 prevents collisions between adjacent gravity hooks 4, thus avoiding warp yarn 100 entanglement, and also serves to increase counterweight. The insulating rod 223 allows unused gravity hooks 4 to rest against the insulating rod 223 for later use. The delay module in the controller is mainly used to address the issue of warp yarn 100 becoming slack during actual production. If warp yarn 100 is not fully emptied, its slack and sagging will cause the gravity hook 4 to come into contact with the conductive component 222, creating a short circuit and stopping the machine. There are two main causes of warp yarn 100 slack: one is that when the amount of warp yarn 100 on the bobbin is relatively large, the outermost warp yarns on the bobbin are prone to crumbling, resulting in slack and sagging as the warp yarn 100 enters the circular loom 3; the other is that when the amount of warp yarn 100 on the bobbin is small, the rotation speed of the bobbin relative to the yarn feeding speed of the circular loom 3 increases, also causing the warp yarn 100 to slack and sagging. By setting a delay module, the time can be set to a value greater than 0 seconds and less than 20 seconds. When the gravity hook 4 touches the conductive element 222, it will not immediately short-circuit and stop the machine, but will have a certain time delay. This prevents short-circuit shutdowns caused by slack or sagging of the warp wire 100, and also avoids affecting the normal shutdown protection after the warp wire 100 runs dry. The conductive element 222 can be a conductive sheet, a conductive rod, or a conductive wire. When it is a conductive sheet, its smaller cross-section or thickness makes it less prone to dust accumulation, and the same applies when it is a conductive wire. This ensures better contact conductivity of the gravity hook 4.

[0022] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An automatic power-off and shutdown protection system for a circular loom after warp yarn breakage or venting, comprising a warp yarn creel (1), a yarn guide device (2), a warp yarn tension adjustment structure (5), and a circular loom (3), characterized in that, The warp yarns are unwound from the warp yarn holder (1) and enter the circular loom (3) via the yarn guide device (2) and the warp yarn tension adjustment structure (5). The yarn guide device (2) includes a yarn guide plate (21) and a mounting frame (22). The mounting frame (22) is provided with a conductive mounting part (221) and a conductive part (222). The conductive mounting part (221) and the conductive part (222) are respectively positive or negative electrodes. A gravity hook (4) is rotatably mounted on the conductive mounting part (221). The gravity hook (4) can rotate to abut against the conductive part (222) to form a closed circuit. The warp yarn tension adjustment structure (5) includes a yarn guide roller (51) and a pressure roller (52), and also includes a controller located in the circuit. When the gravity hook... (4) When in contact with the conductive part (222), the controller can control the on / off of the drive motor of the circular loom (3); the controller includes a delay module. After the time for the gravity hook (4) to be in contact with the conductive part (222) exceeds the time set by the delay module, the controller controls the drive motor of the circular loom (3) to be de-energized; a spring part (41) is provided on the gravity hook (4). The spring part (41) can prevent collisions between adjacent gravity hooks (4) and play the role of increasing the counterweight; an insulating rod (223) is provided on the mounting frame (22). The gravity hook (4) can rotate to contact the insulating rod (223); the guide wire device (2) is located between the warp wire frame (1) and the warp tension adjustment structure (5).

2. The automatic power-off and shutdown protection system for a circular loom after warp yarn breakage or emptying, as described in claim 1, is characterized in that... The conductive element (222) is configured as a conductive sheet or a conductive wire.

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