A loom thread breakage alarm device
By designing a loom thread breakage alarm device, which uses the linkage of the roller, movable frame and return spring to sense changes in the tension of the textile thread, timely alarm and quick recovery, the structural complexity of existing loom thread breakage detection devices and the shortcomings of manual inspection are solved, thus improving the stability of loom operation and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU QINGCHUAN TEXTILE TECH CO LTD
- Filing Date
- 2025-06-17
- Publication Date
- 2026-05-26
AI Technical Summary
Existing loom thread breakage detection devices are complex in structure, expensive, and lack sufficient detection sensitivity and reliability, failing to meet the high-efficiency and stable requirements of modern textile production. Furthermore, relying on manual inspections presents risks of poor real-time performance and missed detections.
Design a loom thread breakage alarm device. Through the linkage of the roller, movable frame, return spring and button box, it can sense the change of yarn tension in real time, sound an alarm using a buzzer, and realize a rapid recovery device through the counterweight roller and limit baffle, so as to ensure that the yarn breaks in time and quickly restores the normal state.
It enables timely alarm for yarn breakage, avoids fabric defects and equipment wear, improves the stability and production efficiency of loom operation, and reduces the difficulty of manual operation and maintenance costs.
Smart Images

Figure CN224280652U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of textile machinery technology, and in particular to a loom yarn breakage alarm device. Background Technology
[0002] In the textile industry, the loom is a core production equipment. The continuity and stability of its operation directly affect the production quality and efficiency of textiles. In the actual operation of the loom, it is common for textile threads to break due to uneven tension, material defects, mechanical friction and other reasons. Once a textile thread breaks, if it is not detected and dealt with in time, it will not only lead to fabric defects and defective products, but may also cause the loom to run idle, causing equipment wear and tear, increasing maintenance costs, and in severe cases, even affecting the normal operation of the entire production line.
[0003] Currently, some looms still rely on manual inspection to detect thread breakage faults. However, manual inspection has obvious drawbacks: on the one hand, manual inspection is difficult to monitor in real time, with blind spots and time delays, making it impossible to detect thread breakage in a timely manner; on the other hand, long-term repetitive inspection work can easily lead to worker fatigue, resulting in missed detections. Some looms are equipped with simple thread breakage detection devices, but these devices are often complex in structure, expensive, and difficult to install and maintain. At the same time, their detection sensitivity and reliability are insufficient, and they are easily affected by environmental factors (such as dust and moisture) and the vibration of the loom itself, leading to false alarms or missed alarms, which cannot meet the needs of efficient and stable modern textile production. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the problems existing in the prior art, this utility model provides a loom thread breakage alarm device.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: a loom yarn breakage alarm device, comprising a fixed base plate, a movable frame rotatably connected to one end of the fixed base plate, support plates fixedly connected to both sides of the movable frame, an arc-shaped pressure rod fixedly connected to the lower surface of the support plate, an arc-shaped cylinder slidably connected to the surface of the arc-shaped pressure rod, the lower end of the arc-shaped cylinder being fixedly connected to the surface of the fixed base plate, a pressing column fixedly connected to the lower surface of the movable frame, a button box provided below the pressing column, and a buzzer electrically connected to one side of the button box.
[0008] In a preferred embodiment of the loom thread breakage alarm device of this utility model, one end of the movable frame is provided with a mounting part, a roller is rotatably connected to the surface of the mounting part, and a textile thread is slidably connected to the surface of the roller.
[0009] In a preferred embodiment of the loom thread breakage alarm device of this utility model, a return spring is provided in the part of the arc-shaped cylinder, and the lower end of the return spring is fixedly connected to the inner wall of the arc-shaped cylinder.
[0010] In a preferred embodiment of the loom thread breakage alarm device of this utility model, a placement platform is provided below the button box, and the lower end of the placement platform is fixedly connected to the surface of the fixed base plate.
[0011] In a preferred embodiment of the loom thread breakage alarm device of this utility model, a rotating plate is rotatably connected to one end of the fixed base plate, and a counterweight roller is fixedly connected to one end of the rotating plate.
[0012] In a preferred embodiment of the loom thread breakage alarm device of this utility model, a limit baffle is rotatably connected to the surface of the movable frame, and a slot is provided on the surface of the movable frame, the size of which is adapted to the size of the counterweight roller.
[0013] (III) Beneficial Effects
[0014] This utility model provides a loom yarn breakage alarm device. It has the following beneficial effects:
[0015] By linking components such as the roller, movable frame, return spring, and button box, the tension changes of the textile thread can be sensed in real time. When the textile thread breaks unexpectedly, the tension disappears instantly. The return spring immediately drives the movable frame to rotate, triggering the button box to control the buzzer to sound an alarm. This avoids problems such as fabric defects and equipment wear due to failure to detect thread breakage in time, effectively improving the quality of fabric production and the stability of loom operation.
[0016] By rotating the rotating plate, the counterweight roller is embedded into the slot of the movable frame. The gravity of the counterweight roller drives the movable frame to reset. Pressing the column reconnects the button box circuit and shuts off the buzzer. Combined with the locking function of the limit baffle, the device is ensured to quickly return to the standby state, which greatly shortens the fault handling time, reduces the difficulty of manual operation, and improves the continuous operation capability and production efficiency of the loom. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This utility model Figure 1 A schematic diagram of the side view structure;
[0020] Figure 3 This is a schematic diagram of the movable frame in this utility model;
[0021] Figure 4 This is a schematic diagram of the structure of the fixed base plate in this utility model;
[0022] Figure 5 This is a schematic diagram of the arc-shaped pressure bar and arc-shaped cylinder in this utility model.
[0023] In the diagram, 1. Fixed base plate; 2. Movable frame; 3. Mounting part; 4. Roller wheel; 5. Support plate; 6. Arc-shaped pressure bar; 7. Arc-shaped cylinder; 8. Return spring; 9. Placement platform; 10. Button box; 11. Buzzer; 12. Pressing column; 13. Rotating plate; 14. Counterweight roller; 15. Slot; 16. Limiting baffle; 17. Textile thread. Detailed Implementation
[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0025] Reference Figures 1 to 5 As shown, this utility model provides a technical solution: a loom yarn breakage alarm device, including a fixed base plate 1, a movable frame 2 rotatably connected to one end of the fixed base plate 1, support plates 5 fixedly connected to both sides of the movable frame 2, an arc-shaped pressure rod 6 fixedly connected to the lower surface of the support plate 5, an arc-shaped cylinder 7 slidably connected to the surface of the arc-shaped pressure rod 6, the lower end of the arc-shaped cylinder 7 fixedly connected to the surface of the fixed base plate 1, a pressing column 12 fixedly connected to the lower surface of the movable frame 2, and a button box 10 provided below the pressing column 12. A buzzer 11 is electrically connected to one side of the movable frame 2. The buzzer 11 slides within the arc-shaped cylinder 7 via the arc-shaped pressure rod 6, which guides the movable frame 2 during rotation and improves its stability. Simultaneously, the pressing column 12 under the movable frame 2 can press the button box 10. When the textile thread 17 breaks, the return spring 8 pushes the arc-shaped pressure rod to rotate the movable frame 2, causing the pressing column 12 to stop pressing the button box 10. This causes the buzzer 11 to emit a warning sound, reminding the staff that the textile thread 17 has broken.
[0026] Reference Figure 3 , Figure 4 and Figure 5As shown in this embodiment: a mounting part 3 is provided at one end of the movable frame 2. A roller 4 is rotatably connected to the surface of the mounting part 3. A textile thread 17 is slidably connected to the surface of the roller 4. The roller 4 is mounted on the mounting part 3 at one end of the movable frame 2 and can rotate. The textile thread 17 slides on its surface, which effectively reduces the friction between the textile thread 17 and the device and ensures the smooth operation of the textile thread 17. A return spring 8 is provided at the part of the arc-shaped cylinder 7. The lower end of the return spring 8 is fixedly connected to the inner wall of the arc-shaped cylinder 7. When the textile thread 17 breaks, it can push the arc-shaped pressure rod 6 to drive the movable frame 2 to rotate, thereby realizing the reset action of the device. A placement platform 9 is provided below the button box 10. The lower end of the placement platform 9 is fixedly connected to the surface of the fixed base plate 1. The placement platform 9 provides stable support for the button box 10, ensuring that the position of the button box 10 is fixed, so that the pressing column 12 can accurately cooperate with the button box 10 and ensure the normal realization of the alarm function.
[0027] Reference Figure 2 and Figure 4 As shown, specifically, a rotating plate 13 is rotatably connected to one end of the fixed base plate 1, and a counterweight roller 14 is fixedly connected to one end of the rotating plate 13. A limit baffle 16 is rotatably connected to the surface of the movable frame 2, and a slot 15 is provided on the surface of the movable frame 2. The size of the slot 15 is adapted to the size of the counterweight roller 14. When the pressing column 12 stops pressing the button box 10 with the help of the return spring 8, the buzzer 11 will continuously emit a warning sound. When the staff finds that the textile thread 17 is broken by the warning sound, they can rotate the rotating plate 13 to drive the counterweight roller 14 at one end to be placed in the slot 15, and then rotate the limit baffle 16 to limit the counterweight roller 14 to prevent it from rotating. At the same time, when the counterweight roller 14 is placed in the slot 15, its own weight will drive the movable frame 2 to rotate counterclockwise, thereby pushing the pressing column 12 down to press the button box 10, turning off the buzzer 11 and preventing the buzzer 11 from continuously emitting a warning sound.
[0028] Working principle: During use, the fixed base plate 1 serves as a basic support component, securely connected to the loom, providing a stable mounting platform for the overall structure. Under normal operating conditions, the yarn 17 slides through the surface of the roller 4 on the mounting part 3 at one end of the movable frame 2. The roller 4 can rotate freely, effectively reducing the friction of the yarn 17 during operation and ensuring smooth conveyance. At this time, the yarn 17, under tension, exerts a downward pulling force on the roller 4. This pulling force is transmitted to the movable frame 2 through the mounting part 3, causing the movable frame 2 to overcome the elastic force of the return spring 8 inside the arc-shaped cylinder 7 and maintain a fixed tilt angle. In this state, the pressing column 12 on the lower surface of the movable frame 2 presses down vertically on the button box 10, keeping the internal circuit of the button box 10 conductive. The buzzer 11, electrically connected to it, is in a silent state. The device continuously monitors the operating status of the yarn 17. If the yarn 17 breaks unexpectedly, the pulling force on the roller 4 disappears instantly, the movable frame 2 loses its tension restraint, and the return spring 8 inside the arc-shaped cylinder 7 releases its elastic force. The potential energy pushes the arc-shaped pressure rod 6 to slide upward along the inner wall of the arc-shaped cylinder 7, thereby causing the movable frame 2 to rotate clockwise around the rotation connection point with the fixed base plate 1. As the movable frame 2 rotates, the pressing column 12 gradually disengages from the button box 10, and the internal circuit of the button box 10 is immediately disconnected. The buzzer 11 is powered on and immediately emits a warning sound to remind the staff that the textile thread 17 has broken. When the staff receives the alarm signal from the buzzer 11, they can rotate the rotating plate 13 to align the counterweight roller 14 at one end. The counterweight roller 14 is embedded in the slot 15 on the surface of the movable frame 2. Due to its own weight, the movable frame 2 rotates counterclockwise. By pressing down the button box 10 again by the pressing column 12, the internal circuit of the button box 10 is reconnected, the buzzer 11 is de-energized and stops sounding, and the alarm cancellation operation is completed. At the same time, the limiting baffle 16 rotatably connected to the surface of the movable frame 2 can rotate to a suitable position to limit the counterweight roller 14 and prevent it from rotating accidentally or falling out of the slot 15 due to vibration during the operation of the loom.
[0029] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.
Claims
1. A loom thread breakage alarm device, comprising a fixed base plate (1), characterized in that: One end of the fixed base plate (1) is rotatably connected to a movable frame (2). Both sides of the movable frame (2) are fixedly connected to support plates (5). An arc-shaped pressure rod (6) is fixedly connected to the lower surface of the support plate (5). An arc-shaped cylinder (7) is slidably connected to the surface of the arc-shaped pressure rod (6). The lower end of the arc-shaped cylinder (7) is fixedly connected to the surface of the fixed base plate (1). A pressing column (12) is fixedly connected to the lower surface of the movable frame (2). A button box (10) is provided below the pressing column (12). A buzzer (11) is electrically connected to one side of the button box (10).
2. The loom thread breakage alarm device according to claim 1, characterized in that: One end of the movable frame (2) is provided with a mounting part (3), and a roller (4) is rotatably connected to the surface of the mounting part (3), and a textile thread (17) is slidably connected to the surface of the roller (4).
3. The loom thread breakage alarm device according to claim 1, characterized in that: The arc-shaped cylinder (7) is equipped with a return spring (8), and the lower end of the return spring (8) is fixedly connected to the inner wall of the arc-shaped cylinder (7).
4. The loom thread breakage alarm device according to claim 1, characterized in that: A placement platform (9) is provided below the button box (10), and the lower end of the placement platform (9) is fixedly connected to the surface of the fixed base plate (1).
5. A loom thread breakage alarm device according to claim 1, characterized in that: One end of the fixed base plate (1) is rotatably connected to a rotating plate (13), and one end of the rotating plate (13) is fixedly connected to a counterweight roller (14).
6. A loom thread breakage alarm device according to claim 5, characterized in that: The surface of the movable frame (2) is rotatably connected to a limit baffle (16), and the surface of the movable frame (2) is provided with a slot (15), the size of which is adapted to the size of the counterweight roller (14).