Broken thread detection device of circular knitting machine

Abstract

The utility model discloses a broken line detection device for a circular knitting machine. The broken line detection device comprises a mounting plate, a fixing ring, a lead frame, a detector and a warning structure, when the yarn is placed on the yarn guide frame, the yarn penetrates through the yarn guide ring together, the yarn can be pulled under the operation of a circular knitting machine, so that the yarn is tensioned, the yarn guide ring is pressed downwards, the rotating arm rotates anticlockwise, the rotating arm can drive the connecting rod to rotate, the torsion spring is stressed to deform and generate elastic force, and meanwhile, the yarn can be conveyed to the yarn guide frame through the yarn guide ring. When the yarn is broken, the contact piece is separated from the contact sensor, if the yarn is broken, under the action of the torsion spring, the rotating arm can rotate and reset, the contact piece makes contact with the contact sensor, the warning lamp flickers, field workers can be warned of the broken yarn in time, and whether the yarn is broken or not is detected in a multiple mode. And the early warning effect of wire breakage is improved.

Description

Technical Field

[0001] This utility model relates to the field of large circular knitting machine technology, specifically a device for detecting broken wires in large circular knitting machines. Background Technology

[0002] The circular knitting machine, also known as a circular weft knitting machine, plays a crucial role in textile production by detecting yarn breakage. This process is primarily used to inspect yarns for breakage, effectively improving production efficiency and product quality.

[0003] Existing patent CN209555484U discloses a yarn breakage detection device for a circular knitting machine, including a guide ring for guiding the yarn to change direction. A yarn support plate is provided on the inner side of the guide ring. The yarn support plate is slidably connected to the guide ring along the radial direction of the guide ring. A sensor for sensing whether the yarn support plate has moved is provided on the guide ring. The sensor is coupled to a controller. The controller is coupled to an alarm. The controller controls the alarm to open and close according to the detection signal fed back by the sensor. The yarn passes through the guide ring and abuts against the yarn support plate.

[0004] The aforementioned patents or existing wire breakage detection devices have the following problems:

[0005] Existing wire breakage detection devices rely solely on sensors, which is a rather simplistic approach. If a sensor malfunctions, it is difficult to promptly alert staff to reconnect the broken wire. Utility Model Content

[0006] The purpose of this invention is to provide a device for detecting broken wires on a large circular knitting machine, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a large circular knitting machine wire breakage detection device, comprising a mounting plate, a fixing ring provided on the mounting plate, a wire frame provided in the fixing ring, a detector provided on the mounting plate, a warning structure provided on the fixing ring, the warning structure comprising a fixing seat, a fixing seat provided on the edge of the fixing ring, a warning light provided on the fixing seat, a torsion spring assembled inside the fixing seat, a connecting rod connected in the torsion spring, a rotating arm provided at the end of the connecting rod, a mounting ring provided at the end of the rotating arm, a wire ring provided in the mounting ring, a contact sensor provided on the surface of the fixing seat, and a contact piece provided at the end of the rotating arm.

[0008] Preferably, when the torsion spring is in its unloaded, natural state, the mounting ring is higher than the conductor frame under the action of the torsion spring.

[0009] Preferably, the conductor ring is provided with a conductor protrusion, the surface of which is an arc surface and a smooth surface.

[0010] Preferably, the contact sensor is provided with a telescopic sleeve, one end of which is fixed to the fixed base and the other end is connected to the surface of the rotating arm.

[0011] Preferably, the edge of the wire ring is provided with a threaded hole, and a bolt is provided in the mounting ring, the bolt being connected to the threaded hole.

[0012] Preferably, the surface of the guide ring is provided with a positioning block, which can be connected to the rotating arm.

[0013] Preferably, when the positioning block is in contact with the rotating arm, the threaded hole is aligned with the bolt.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] When the yarn is placed on the guide wire holder, it is passed through the guide wire ring. As the circular knitting machine operates, the yarn is pulled and tightened. Pressing down on the guide wire ring causes the rotating arm to rotate counter-clockwise. This rotation drives the connecting rod to rotate, causing the torsion spring to deform and generate elastic force. Simultaneously, the contact piece separates from the contact sensor. If the yarn breaks, the rotating arm will rotate back to its original position under the action of the torsion spring, causing the contact piece to contact the contact sensor and the warning light to flash. This provides timely alerts to on-site personnel regarding the yarn breakage, enabling multiple detection methods and improving the early warning effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a front view structural diagram of the present utility model;

[0018] Figure 3 This is a side sectional view of the fixing seat of this utility model.

[0019] Figure 4 This is a front view schematic diagram of the contact sensor structure of this utility model;

[0020] Figure 5 This is a front view cross-sectional structural diagram of the wire ring of this utility model.

[0021] In the diagram: Mounting plate-1, Fixing ring-2, Wire bracket-3, Detector-4, Warning structure-5, Fixing base-51, Warning light-52, Torsion spring-53, Connecting rod-54, Rotating arm-55, Mounting ring-56, Wire ring-57, Contact sensor-58, Contact piece-59, Telescopic sleeve-510, Wire protrusion ring-511, Threaded hole-512, Bolt-513, Positioning block-514. Detailed Implementation

[0022] To further explain the technical solution of this utility model, a detailed description is provided below through specific embodiments.

[0023] Please see Figure 1 and Figure 2 This utility model provides a large circular knitting machine yarn breakage detection device, including a mounting plate 1, a fixing ring 2 fixed on the mounting plate 1 by bolts, a wire frame 3 fixed in the fixing ring 2 by screws, a detector 4 set on the mounting plate 1, the detector 4 and the wire frame 3 are set on the same vertical line, the detector 4 can directly detect the yarn on the wire frame 3, and a warning structure 5 is set on the fixing ring 2.

[0024] Specifically, the yarn is placed on the guide frame 3. When the circular knitting machine is running, it will pull the yarn to move on the guide frame 3. The detector 4 will detect the yarn on the guide frame 3 in real time. If the yarn breaks, the yarn on the guide frame 3 will fall off. At this time, the detector 4 will not be able to detect the yarn on the guide frame 3 and will issue a warning.

[0025] Please see Figure 2 , Figure 3 , Figure 4 and Figure 5 This utility model provides a large circular knitting machine wire breakage detection device. The warning structure 5 includes a fixed base 51. The fixed base 51 is integrally formed on the side of the fixed ring 2. The fixed base 51 is provided with a warning light 52. The fixed base 51 is equipped with a torsion spring 53. A connecting rod 54 is connected to the torsion spring 53. One end of the torsion spring 53 is fixed inside the fixed base 51, and the other end is connected to the connecting rod 54. The connecting rod 54 is rotatably connected to the fixed base 51. A rotating arm 55 is integrally formed at the end of the connecting rod 54. An installation ring 56 is integrally formed at the end of the rotating arm 55. A wire ring 57 is installed in the installation ring 56. A contact sensor 58 is provided on the surface of the fixed base 51. The contact sensor 58 is electrically connected to the warning light 52. A contact piece 59 is provided at the end of the rotating arm 55.

[0026] Specifically, when the yarn is placed on the guide wire holder 3, it is passed through the guide wire ring 57. Under the operation of the circular knitting machine, the yarn is pulled and tightened. At this time, the guide wire ring 57 is pressed down, causing the rotating arm 55 to rotate counterclockwise. The rotating arm 55 drives the connecting rod 54 to rotate. At this time, the torsion spring 53 is deformed by force and generates elastic force. At the same time, the contact piece 59 separates from the contact sensor 58. If the yarn breaks, the rotating arm 55 will rotate and reset under the action of the torsion spring 53, so that the contact piece 59 contacts the contact sensor 58, causing the warning light 52 to flash. This can promptly alert the on-site staff to the occurrence of a broken yarn, thereby achieving multiple detection of whether the yarn is broken and improving the early warning effect of yarn breakage.

[0027] When the torsion spring 53 is in its unforced natural state, the mounting ring 56 is higher than the wire frame 3 under the action of the torsion spring 53, so that the yarn can press down on the rotating arm 55, thereby separating the contact piece 59 from the contact sensor 58.

[0028] The conductor ring 57 is provided with a conductor protrusion ring 511. The surface of the conductor protrusion ring 511 is an arc surface and a smooth surface to reduce the friction of the yarn.

[0029] The contact sensor 58 is provided with a telescopic sleeve 510. One end of the telescopic sleeve 510 is fixed on the fixed base 51, and the other end is connected to the surface of the rotating arm 55. It is used to protect the contact piece 59 and the contact sensor 58 and prevent dust from affecting the contact sensor 58.

[0030] The guide ring 57 has a threaded hole 512 on its side, and a bolt 513 is provided in the mounting ring 56. The bolt 513 is connected to the threaded hole 512. The guide ring 57 has a positioning block 514 on its surface. The positioning block 514 can be connected to the rotating arm 55, which can facilitate the disassembly and replacement of the guide ring 57. When the positioning block 514 is connected to the rotating arm 55, the threaded hole 512 is aligned with the bolt 513, which is convenient for alignment and installation.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A device for detecting broken wires on a large circular knitting machine, comprising a mounting plate (1), a fixing ring (2) disposed on the mounting plate (1), a wire guide (3) disposed in the fixing ring (2), and a detector (4) disposed on the mounting plate (1), characterized in that: It also includes a warning structure (5), which is provided on the fixed ring (2). The warning structure (5) includes a fixed seat (51). The fixed ring (2) is provided with a fixed seat (51) on its side. The fixed seat (51) is provided with a warning light (52). The fixed seat (51) is equipped with a torsion spring (53). A connecting rod (54) is connected in the torsion spring (53). A rotating arm (55) is provided at the end of the connecting rod (54). A mounting ring (56) is provided at the end of the rotating arm (55). A wire ring (57) is provided in the mounting ring (56). A contact sensor (58) is provided on the surface of the fixed seat (51). A contact piece (59) is provided at the end of the rotating arm (55).

2. The large circular knitting machine breakage detection device according to claim 1, characterized in that: When the torsion spring (53) is in a natural, unforced state, the mounting ring (56) is higher than the conductor frame (3) under the action of the torsion spring (53).

3. The large circular knitting machine breakage detection device according to claim 1, characterized in that: The conductor ring (57) is provided with a conductor protrusion (511), the surface of which is an arc surface and a smooth surface.

4. The large circular knitting machine breakage detection device according to claim 1, characterized in that: The contact sensor (58) is provided with a telescopic sleeve (510) on its exterior. One end of the telescopic sleeve (510) is fixed on the fixed base (51), and the other end is connected to the surface of the rotating arm (55).

5. The large circular knitting machine breakage detection device according to claim 1, characterized in that: The wire ring (57) has a threaded hole (512) on its side, and the mounting ring (56) has a bolt (513) in it, which is connected to the threaded hole (512).

6. The large circular knitting machine breakage detection device according to claim 5, characterized in that: The surface of the guide ring (57) is provided with a positioning block (514), which can be connected to the rotating arm (55).

7. The large circular knitting machine breakage detection device according to claim 6, characterized in that: When the positioning block (514) is in contact with the rotating arm (55), the threaded hole (512) is aligned with the bolt (513).

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