A device for monitoring and alarming the bottom thread of a bobbin

Abstract

The present application relates to the technical field of vamp processing, and specifically discloses a device for monitoring and alarming bobbin bottom thread, which comprises a first baffle, a sandwich mechanism fixedly connected to the top end of the first baffle, a second baffle fixedly connected to the top end of the sandwich mechanism, and a monitoring mechanism arranged at the bottom end of the sandwich mechanism and comprising a circuit board. The device is provided with a winding column, a circuit board, a controller and a micro button cell, so that when the bottom thread is about to run out outside the winding column, the infrared transmitter and the infrared receiver are not blocked by the bottom thread, the infrared light emitted by the infrared transmitter can be received by the infrared receiver, the controller controls the alarm of the buzzer, the buzzer can emit a buzzing alarm, the operator is reminded that the bottom thread is about to run out, and timely monitoring of the bobbin bottom thread is realized.

Description

Technical Field

[0001] This invention belongs to the field of shoe upper processing technology, specifically relating to a device for monitoring and alarming the bobbin thread. Background Technology

[0002] Bobbin thread monitoring refers to a device or function that uses sensors to monitor the amount of bobbin thread in real time on equipment such as sewing machines and embroidery machines. Its core objective is to solve the problem of bobbin thread being "invisible and easily exhausted," thereby avoiding empty needles, scrap, and rework caused by bobbin thread running out or breaking. It can reduce the waste of time, thread, and fabric caused by rework, and is especially suitable for production with high-quality requirements.

[0003] As the core component carrying the bobbin thread, the real-time monitoring of bobbin thread usage has long been a technical bottleneck. In current mainstream equipment, the bobbin thread is usually pre-wound onto a small bobbin thread and installed inside the machine's rotary hook. Because the bobbin thread and the sewing fabric are in a relatively isolated space, and its consumption rate is much faster than that of the larger-capacity top thread, it is difficult for operators to directly observe the remaining bobbin thread with the naked eye. Traditional production relies on manual experience to judge, and operators need to frequently stop the machine to check the bobbin thread status during work breaks, or estimate the remaining bobbin thread usage time based on past experience. However, this "passive" management method has significant drawbacks. When the machine is in a high-speed continuous sewing state, the bobbin thread may suddenly run out within two inspection intervals, and the operator cannot detect it in time. Summary of the Invention

[0004] The purpose of this invention is to provide a bobbin thread monitoring and alarm device to solve the problems mentioned in the background art, such as the inability to monitor bobbin threads in real time after use, resulting in empty needles and floating threads.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A device for monitoring and alarming bobbin bottom line, comprising: First edge guard; A sandwich mechanism, wherein the sandwich mechanism is fixedly connected to the top end of the first retaining edge; The second stop is fixedly connected to the top of the sandwich mechanism; The monitoring mechanism is located at the bottom of the mezzanine mechanism. The monitoring mechanism includes a circuit board, a controller is installed on the outside of the circuit board, a miniature button battery is installed on the top of the circuit board, an infrared transmitter is connected to the circuit board through wires, and an infrared receiver is connected to the circuit board through wires. A buzzer, which is mounted on the outside of the second stop.

[0006] Preferably, the miniature button battery is used to provide power to the controller, the infrared transmitter, and the infrared receiver, the infrared transmitter being disposed inside the first stop and the infrared receiver being disposed on the inner sidewall of the second stop.

[0007] Preferably, the infrared transmitter and infrared receiver are installed in vertically corresponding positions, the buzzer is connected to the outside of the circuit board via a wire, the buzzer is used for alarm when the baseline is used up, and the buzzer is installed on the outside of the second stop.

[0008] Preferably, the top ends of the first and second guard edges are both provided with shaft holes, the interlayer mechanism includes a winding post, the inside of the winding post is provided with a central post, and the interlayer part between the winding post and the central post is provided with an interlayer groove.

[0009] Preferably, the diameter of the shaft hole is the same as the inner diameter of the central column, and the interlayer groove is used to install the circuit board.

[0010] Compared with the prior art, the beneficial effects of the present invention are: This invention, through the design of a winding post, circuit board, controller, and miniature button battery, ensures that when the bobbin thread is nearly depleted outside the winding post, the infrared transmitter and receiver are not blocked by the bobbin thread. This allows the infrared light emitted by the transmitter to be received by the receiver, thereby enabling the controller to control the buzzer alarm, which then sounds to remind the operator that the bobbin thread is about to run out, thus achieving timely monitoring of the bobbin thread. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the unfolded structure of the present invention; Figure 3 This is a partial structural diagram of the present invention; Figure 4 This is a flowchart of the present invention.

[0012] In the diagram: 1. First guard edge; 2. Interlayer mechanism; 201. Winding post; 202. Interlayer groove; 203. Center post; 3. Second guard edge; 4. Monitoring mechanism; 401. Circuit board; 402. Controller; 403. Miniature button battery; 404. Infrared transmitter; 405. Infrared receiver; 5. Shaft hole; 6. Buzzer. Detailed Implementation

[0013] 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.

[0014] Example 1: Please see Figures 1-4 As shown, a device for monitoring and alarming bobbin bottom line includes: First retaining edge 1; A sandwich mechanism 2 is fixedly connected to the top end of the first retaining edge 1; The second stop 3 is fixedly connected to the top of the sandwich mechanism 2; Monitoring mechanism 4 is located at the bottom of the interlayer mechanism 2. The monitoring mechanism 4 includes a circuit board 401. A controller 402 is installed on the outside of the circuit board 401. A miniature button battery 403 is installed on the top of the circuit board 401. An infrared transmitter 404 is connected to the circuit board 401 through a wire. An infrared receiver 405 is connected to the circuit board 401 through a wire. A buzzer 6 is installed on the outside of the second retaining edge 3. A miniature button battery 403 provides power to the controller 402, infrared transmitter 404, and infrared receiver 405. The infrared transmitter 404 is located inside the first retaining edge 1, and the infrared receiver 405 is located on the inner side wall of the second retaining edge 3. The installation positions of the infrared transmitter 404 and the infrared receiver 405 are vertically aligned. The buzzer 6 is connected to the outside of the circuit board 401 via a wire. The buzzer 6 is used for alarm when the baseline is depleted. The buzzer 6 is installed on the outside of the second retaining edge 3. A shaft hole 5 is opened at the top of both the first retaining edge 1 and the second retaining edge 3. The interlayer mechanism 2 includes a winding post 201. A central post 203 is provided inside the winding post 201. An interlayer groove 202 is opened in the interlayer part between the winding post 201 and the central post 203. The diameter of the shaft hole 5 is the same as the inner diameter of the central post 203. The interlayer groove 202 is used to install the circuit board 401.

[0015] Specifically, the first stop 1 and the second stop 3 are located at both ends of the winding post 201, extending outwards in a circular disc shape. They have two main functions: limiting: preventing the bobbin thread from slipping out of the winding shaft during winding; and supporting: cooperating with the bobbin case to ensure the bobbin maintains a stable axial position during rotation. The center post 203 has a hole penetrating the center of the winding post 201, used for mounting on the bobbin case / bobbin holder of a sewing or embroidery machine. The inner wall of the shaft hole 5 has anti-slip protrusions or grooves to increase friction with the drive shaft and prevent slippage. The infrared transmitter (404) is model VishayTSAL6200, with a wavelength of 940nm, matching mainstream receiver heads; an angle of 30°–60° is recommended; it uses 5V drive with a current of 20–50mA. The infrared receiver 405 is model VishayTSOP34838, with built-in amplification and demodulation circuits, outputting digital signals (high / low levels), which can be directly connected to a microcontroller. The carrier frequency can be selected at 38kHz to enhance anti-interference capability. The controller 402 is model STC89C52, which is responsible for reading the sensor status, judging logic and controlling the buzzer 6. The miniature button battery 403 provides a stable 5V power supply for the controller 402 and the control circuit. The circuit board 401 is also equipped with voltage regulator chips such as AMS1117-5.0.

[0016] As can be seen from the above, when the bobbin thread (wound around the winding post 201) in the sewing machine bobbin assembly is gradually consumed to the point of near depletion during the sewing process, the bobbin thread surplus around the winding post 201 is significantly reduced or even almost completely exhausted. The bobbin thread, which might have previously partially blocked or interfered with the infrared light path transmission, is no longer located in the detection area between the infrared transmitter 404 and the infrared receiver 405. This allows the infrared light emitted by the infrared transmitter 404 (usually invisible infrared light modulated by a 38kHz carrier wave) to be projected directly and unobstructed through the detection gap to reach the infrared receiver 405. The infrared receiver 405 then receives this... After a stable infrared light signal is received, a corresponding status level signal is output to the controller 402. The controller 402 (usually a microcontroller or control chip with a built-in logic processing module) collects and analyzes the level signal from the infrared receiver 405 in real time. When the signal is detected to meet the preset condition of "the bobbin thread is about to run out", a control command is immediately triggered to drive the buzzer 6 connected in the alarm circuit to emit a clear buzzing alarm sound. This effectively reminds the on-site operators to pay attention to the bobbin thread balance in time, realizes real-time and accurate monitoring of the bobbin thread usage, and avoids sewing interruptions or product quality problems caused by the depletion of bobbin thread.

[0017] All standard parts used in this invention can be purchased commercially, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all use conventional models in the prior art, and the circuit connections also use conventional connection methods in the prior art, which will not be detailed here. Any content not described in detail in this specification belongs to the prior art known to those skilled in the art.

[0018] 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 make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for monitoring and alarming bobbin bottom line, characterized in that, include: First stop (1); A sandwich mechanism (2) is fixedly connected to the top of the first retaining edge (1); The second stop (3) is fixedly connected to the top of the sandwich mechanism (2); The monitoring mechanism (4) is located at the bottom of the interlayer mechanism (2). The monitoring mechanism (4) includes a circuit board (401). A controller (402) is installed on the outside of the circuit board (401). A miniature button battery (403) is installed on the top of the circuit board (401). An infrared transmitter (404) is connected to the circuit board (401) through a wire. An infrared receiver (405) is connected to the circuit board (401) through a wire. A buzzer (6) is mounted on the outside of the second stop (3).

2. The device for monitoring and alarming bobbin bottom line according to claim 1, characterized in that: The micro button battery (403) is used to provide power to the controller (402), the infrared transmitter (404) and the infrared receiver (405), the infrared transmitter (404) being located inside the first sidewall (1) and the infrared receiver (405) being located on the inner sidewall of the second sidewall (3).

3. The device for monitoring and alarming bobbin bottom line according to claim 1, characterized in that: The infrared transmitter (404) and infrared receiver (405) are installed vertically in the same position. The buzzer (6) is connected to the outside of the circuit board (401) by a wire. The buzzer (6) is used for alarm when the bottom line is used up. The buzzer (6) is installed on the outside of the second stop (3).

4. The device for monitoring and alarming bobbin bottom line according to claim 1, characterized in that: The top ends of the first guard (1) and the second guard (3) are provided with shaft holes (5). The sandwich mechanism (2) includes a winding post (201). A center post (203) is provided inside the winding post (201). A sandwich groove (202) is provided in the sandwich part between the winding post (201) and the center post (203).

5. The device for monitoring and alarming bobbin thread according to claim 4, characterized in that: The diameter of the shaft hole (5) is the same as the inner diameter of the central column (203), and the interlayer groove (202) is used to install the circuit board (401).

Images