A sewing machine thread breakage detection device

Abstract

The utility model discloses a sewing machine surface line broken detection device, including detection casing no.

Description

Technical Field

[0001] This utility model belongs to the field of thread breakage detection technology, specifically relating to a sewing machine surface thread breakage detection device. Background Technology

[0002] Sewing machines, widely used in industries such as clothing, home furnishings, and leather, directly impact production efficiency and product quality through their automation and stability. During sewing operations, thread breakage is one of the most common and impactful malfunctions. If not addressed promptly, a broken thread can lead to widespread defects in the sewn product, even rendering it unusable, resulting in wasted raw materials and time. In automated sewing units or production lines, if a thread breakage is not detected immediately, the equipment will continue to run idle, producing a large number of defective products and potentially damaging the needle plate, fabric, and even the needle itself due to missing thread.

[0003] The existing sewing machine thread breakage points are generally located at multiple thread guide holes, needle holes, or the shuttle position on the shuttle bed; Existing detection devices mostly use mechanical detection devices. These devices typically utilize the loss of tension after the thread breaks, triggering a micro switch or proximity switch through the displacement or swing of mechanical probes, swing arms, and other components, thereby sending a thread breakage signal. When the thread breaks, the detection hook swings to another position under the action of springs or other reset elements, triggering the switch. Therefore, there is still room for improvement in terms of the reliability, adaptability, response speed, and structural simplicity of existing detection devices. To address this, we propose a sewing machine thread breakage detection device. Utility Model Content

[0004] The purpose of this invention is to provide a sewing machine thread breakage detection device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a sewing machine thread breakage detection device, comprising a detection housing one and a detection housing two, wherein one side of the detection housing one and the detection housing two are rotatably connected by a hinge, and the other side of the detection housing one and the detection housing two are fixedly connected by a fixing screw. A winding roller is fixedly installed inside one side of the detection housing. A kinetic energy detector is fixedly installed inside the detection housing corresponding to one side of the winding roller. The roller shaft on the winding roller passes through the bracket part of the winding roller and is inserted into the kinetic energy detection port of the kinetic energy detector. A circuit breaker module for detecting the rotation of the roller shaft connected to the kinetic energy detection port is fixedly installed inside the kinetic energy detector. The kinetic energy detector is electrically connected to an indicator light through a series circuit breaker module. The indicator light is fixedly installed through the detection housing. The detection housing 1 and the detection housing 2 are respectively provided with an outlet hole and an inlet hole for the textile thread to pass through at the top and bottom positions.

[0006] Furthermore, an expansion roller is slidably provided at the top and bottom positions of the inner side of the second detection housing. The screw portion of the expansion roller penetrates the side wall of the second detection housing and moves vertically along the second detection housing. The screw portion of the expansion roller is screwed and fixed with a locking nut.

[0007] Furthermore, both the bottom of the first and second detection housings are integrally fitted with threaded platforms.

[0008] Furthermore, the rod portion of the winding roller penetrates the side wall of the detection housing and is screwed into and fixed with a fixing screw.

[0009] Furthermore, the outer side of the fixing screw is provided with an anti-slip protrusion structure, wherein the fixing screw and the winding roller are fixed by screwing together with the inner wall thread.

[0010] Furthermore, the kinetic energy detector is fixedly connected by screws, and the kinetic energy detector is equipped with an independent power supply.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. In this solution, detection devices installed inside detection housing one and detection housing two enable real-time monitoring of the thread breakage status. When the thread breaks, the detection device immediately triggers a signal transmission to the controller, thereby cutting off the sewing machine's power output and effectively preventing product defects caused by continued empty sewing after a thread breakage. Simultaneously, an independent power supply provides stable power to the detection device, ensuring the reliability of signal acquisition and transmission, and improving overall detection accuracy and response speed.

[0012] 2. By using the expansion rollers and locking nuts correspondingly set on the detection housing one and detection housing two, tension control of the wire routing section is achieved, effectively solving the corresponding wire winding problem. At the same time, by using the threaded platforms correspondingly set on the detection housing one and detection housing two, the fixing method between the thread and the machine body is increased, effectively ensuring the compatibility of the device during use. The docking and fixing by the fixing screw facilitates the maintenance of the corresponding parts. Attached Figure Description

[0013] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0014] Figure 1 This is a schematic diagram of the overall cross-sectional structure of this utility model; Figure 2This is a top view of the overall structure of this utility model; Figure 3 This is a schematic diagram of the detection device of this utility model; In the diagram: 1. Detection housing one; 2. Detection housing two; 3. Winding roller; 4. Fixing screw; 5. Kinetic energy detector; 6. Expansion roller; 7. Locking nut; 8. Thread platform; 9. Indicator light; 10. Hinge; 11. Outlet hole; 12. Inlet hole; 13. Textile thread; 14. Fixing screw. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] Reference Figures 1-3 The present invention proposes a technical solution: a sewing machine thread breakage detection device, comprising a detection housing 1 and a detection housing 2, wherein one side of the detection housing 1 and the detection housing 2 are rotatably connected by a hinge 10, and the other side of the detection housing 1 and the detection housing 2 are fixed by a fixing screw 14. A winding roller 3 is fixedly installed inside one side of the detection housing 1. A kinetic energy detector 5 is fixedly installed inside the detection housing 1 at a position corresponding to one side of the winding roller 3. The roller shaft on the winding roller 3 passes through the bracket part of the winding roller 3 and is inserted into the kinetic energy detection port of the kinetic energy detector 5. A circuit breaker module for detecting the rotation of the roller shaft connected to the kinetic energy detection port is fixedly installed inside the kinetic energy detector 5. The kinetic energy detector 5 is electrically connected to the indicator light 9 through the series circuit breaker module. The indicator light 9 is fixedly installed through the detection housing 1. The top and bottom of the detection housing 1 and the detection housing 2 are respectively provided with an outlet hole 11 and an inlet hole 12 for the textile thread 13 to pass through.

[0018] Expansion rollers 6 are slidably installed at the top and bottom of the inner side of the second detection housing 2. The screw portion of the expansion roller 6 penetrates the side wall of the second detection housing 2 and moves vertically along the second detection housing 2. The screw portion of the expansion roller 6 is screwed and fixed with a locking nut 7. The bottom of the first detection housing 1 and the second detection housing 2 are integrally fitted with threaded platforms 8. The rod portion of the winding roller 3 penetrates the side wall of the first detection housing 1 and is screwed and fixed with a fixing screw 4. Through the expansion rollers 6 and locking nuts 7 correspondingly installed on the first detection housing 1 and the second detection housing 2, the tension of the wire routing section is controlled, effectively solving the corresponding winding problem. At the same time, the threaded platforms 8 correspondingly installed on the first detection housing 1 and the second detection housing 2 increase the fixing method between the thread and the machine body, effectively ensuring the compatibility of the device during use. The docking and fixing with the fixing screw 14 facilitates the maintenance of the corresponding parts.

[0019] In this embodiment, the outer side of the fixing screw 4 is provided with an anti-slip protrusion structure, wherein the fixing screw 4 and the winding roller 3 are fixed by screwing together the inner wall thread, the kinetic energy detector 5 is fixedly connected by the screw, and the kinetic energy detector 5 is provided with an independent power supply inside.

[0020] The working principle and usage process of this utility model: When using this type of sewing machine thread breakage detection device, the textile thread 13 is passed through the inlet hole 12, through the bottom expansion roller 6, and then wound around the winding roller 3 at least once. It then passes through the top expansion roller 6 and exits from the outlet hole 11, thus fixing the winding part. At the same time, according to the usage requirements, the detection housing 1 and the detection housing 2 can be fixed at the corresponding thread breakage position. When the textile thread 13 moves, it drives the roller on the winding roller 3 to rotate. When the kinetic energy detector 5 detects the rotation of the roller on the winding roller 3, the indicator light 9 is kept in operation. When the kinetic energy detector 5 detects that the roller on the winding roller 3 stops rotating, it proves that the circuit breakage protection is triggered. The indicator light 9 goes out, verifying that the textile thread 13 is broken, and the use is completed. It should be added that the model of the kinetic energy detector 5 can be selected from the Schneider Electric XCKJ series XCKM113G11, which can specifically detect a rotational force of 0.5N.

[0021] When the position of the expansion roller 6 needs to be adjusted, simply loosen the locking nut 7 clockwise and slide the expansion roller 6 up and down. By controlling the gap between the two expansion rollers 6, the winding tension of the textile thread 13 can be controlled.

[0022] As can be seen from the above working process, this solution achieves real-time monitoring of the thread breakage status through the detection devices correspondingly installed inside detection housing 1 and detection housing 2. When the thread breaks, the detection device immediately triggers a signal transmission to the controller, thereby cutting off the sewing machine's power output and effectively preventing product defects caused by continued empty sewing after a thread breakage. Simultaneously, an independent power supply provides stable power to the detection device, ensuring the reliability of signal acquisition and transmission, and improving overall detection accuracy and response speed.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sewing machine thread breakage detection device, comprising a first detection housing (1) and a second detection housing (2), characterized in that: The detection housing 1 (1) and the detection housing 2 (2) are rotatably connected by a hinge (10) on one side, and the other side of the detection housing 1 (1) and the detection housing 2 (2) are fixed by a fixing screw (14). A winding roller (3) is fixedly installed inside one side of the detection housing (1). A kinetic energy detector (5) is fixedly installed inside the detection housing (1) at a position corresponding to one side of the winding roller (3). The roller shaft on the winding roller (3) passes through the bracket part of the winding roller (3) and is inserted into the kinetic energy detection port on the kinetic energy detector (5). A circuit breaker module for detecting the rotation of the roller shaft connected to the kinetic energy detection port is fixedly installed inside the kinetic energy detector (5). The kinetic energy detector (5) is electrically connected to an indicator light (9) through a series circuit breaker module. The indicator light (9) is fixedly installed through the detection housing (1). The detection housing 1 (1) and the detection housing 2 (2) are respectively provided with an outlet hole (11) and an inlet hole (12) for the textile thread (13) to pass through.

2. The sewing machine thread breakage detection device according to claim 1, characterized in that: An expansion roller (6) is slidably provided at the top and bottom of the inner side of the second detection housing (2). The screw part of the expansion roller (6) penetrates the side wall of the second detection housing (2) and moves vertically along the second detection housing (2). The screw part of the expansion roller (6) is screwed and fixed with a locking nut (7).

3. The sewing machine thread breakage detection device according to claim 1, characterized in that: Both the bottom of the first detection housing (1) and the second detection housing (2) are integrally fitted with threaded platforms (8).

4. The sewing machine thread breakage detection device according to claim 1, characterized in that: The rod of the winding roller (3) penetrates the side wall of the detection housing (1) and is screwed into and fixed by the fixing screw (4).

5. The sewing machine thread breakage detection device according to claim 4, characterized in that: The outer side of the fixing screw (4) is provided with an anti-slip protrusion structure, wherein the fixing screw (4) and the winding roller (3) are fixed by screwing together the inner wall thread.

6. The sewing machine thread breakage detection device according to claim 1, characterized in that: The kinetic energy detector (5) is fixedly connected by screws, and the kinetic energy detector (5) is equipped with an independent power supply.

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