Cut-off machine broken silk sensing device capable of adapting to raw silk tension and using method of cut-off machine broken silk sensing device

Abstract

The invention belongs to the field of spinning broken silk monitoring, and discloses a cut-off machine broken silk sensing device capable of adapting to raw silk tension and a using method.The cut-off machine broken silk sensing device comprises a sensor shell, and a photoelectric trigger rod and a pigtail ring are rotationally connected to the top end of the sensor shell and located between the side walls of the two sides of the sensor shell; the photoelectric trigger rod is fixedly connected with the pigtail ring, and a photoelectric sensor is fixedly connected between the bottom end of the sensor shell and the side walls of the two sides of the sensor shell. The tested raw silk is in contact with the rotary triggering unit, and a trigger in the rotary triggering unit rotates and is far away from the triggering range of the photoelectric triggering rod under the action of the tension of the raw silk; when the raw silk is broken, the trigger falls to the triggering range of the photoelectric triggering rod, and the photoelectric sensor senses and transmits a silk breaking signal. Whether a single raw silk is broken or not in the conveying process can be detected, and the broken silk condition of the raw silk can be detected in real time.

Description

Technical Field

[0001] The present invention belongs to the field of textile broken silk monitoring, and in particular relates to a broken silk sensing device for a cutting machine which can adapt to the tension of raw silk and a use method thereof. Background Art

[0002] Detecting raw silk breakage plays a crucial role in the processing, production, and use of raw silk products. It not only impacts production efficiency but also product quality. A single strand of raw silk is extremely thin and has very low tension. Existing wire breakage detection devices in cutting machines lack intelligent functionality for detecting single strands of raw silk.

[0003] Currently, most single-strand raw silk break detection methods on the market use manual inspection methods. However, this method requires continuous inspection by inspectors, which can lead to delays in detecting broken strands. Furthermore, manual inspections can easily cause visual fatigue and misjudgment. To address these shortcomings, existing patents have proposed solutions. For example, Patent Publication No. 201810420003.9 discloses a yarn break detection device that includes an audible and visual alarm, a yarn break sensor, and auxiliary detection components. However, due to the significant difference in diameter between yarn and raw silk, optical inspection can easily lead to misjudgments when jitter occurs during wire feeding. Patent Publication No. 201710362235.9 also discloses a hybrid broken-thread detection device that uses a wire hook as a trigger for a photoelectric sensor below the device. The sensor requires the thread to pass horizontally through the hook for operation. While this device can address the misjudgment problem of direct detection by the photoelectric sensor, the horizontal wire feed method of this device is unsuitable for use in a cutting machine, which requires vertical wire feeding. The invention patent with publication number 202410686554.5 discloses a thread breakage monitoring device for textile machinery. This device has a complex structural design and requires a large amount of space, making it difficult to install on a raw silk cutting machine. Meanwhile, the design patent with publication number 202130520519.3 discloses a yarn fixing mechanism. However, this design uses a U-shaped wire guide hook to restrain the yarn. However, when the U-shaped wire guide hook restrains the raw silk, the raw silk has a high probability of detachment due to its small diameter. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention aims to provide a wire breakage sensing device for a cutting machine that can adapt to the tension of raw silk and a method for use, which can detect wire breakage of a single raw silk during the winding process or processing process of the cutting machine.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A broken silk sensing device for a cutting machine that can adapt to the tension of raw silk comprises a sensor housing, a photoelectric trigger rod and a pigtail ring being rotatably connected to the top end of the sensor housing and located between the side walls on both sides of the sensor housing, the photoelectric trigger rod and the pigtail ring being fixedly connected, and a photoelectric sensor being fixedly connected to the bottom end of the sensor housing and located between the side walls on both sides of the sensor housing.

[0007] In a preferred example, the present invention can be further configured as follows: the photoelectric trigger rod has an arc-shaped hook structure at one end away from the sensor housing, and an arc-shaped shielding strip is fixedly connected to the circumference of the hook structure.

[0008] In a preferred example, the present invention can be further configured as follows: a threaded hole is provided on the photoelectric trigger rod near the hook structure, and a counterweight screw is threadedly connected in the threaded hole.

[0009] In a preferred example, the present invention can be further configured as follows: a tensioning rod holder is detachably connected to the side wall at the top of the sensor housing, a tensioning rod is fixedly connected to the end of the tensioning rod holder away from the sensor housing, and the tensioning rod is located above the pigtail ring.

[0010] In a preferred example, the present invention can be further configured as follows: the tensioning rod is a cylindrical rod-shaped structure, and its surface is a smooth surface.

[0011] In a preferred example, the present invention may be further configured as follows: a first stop bar located at the upper end of the sensor housing is fixedly connected between the side walls on both sides of the sensor housing.

[0012] In a preferred example, the present invention may be further configured as follows: a second stop bar located at the lower end of the sensor housing is fixedly connected between the side walls on both sides of the sensor housing.

[0013] In a preferred example, the present invention can be further configured as follows: an angle exists between the photoelectric trigger rod and the pigtail ring.

[0014] In a preferred example, the present invention can be further configured as follows: a mounting plate is fixedly connected to the bottom of the sensor housing, and a mounting hole is provided on the mounting plate.

[0015] A method for using a broken silk sensing device for a cutting machine capable of adapting to raw silk tension, the method comprising the following specific steps:

[0016] Step 1: The raw silk breakage sensor is fixed to the frame of the wire cutting machine with screws and moves back and forth with the wire cutting machine. When the raw silk vertically passes through the pigtail ring in the wire breakage sensor of the cutting machine, the photoelectric trigger rod connected to the pigtail ring rotates around the bearing and moves away from the trigger range of the photoelectric sensor.

[0017] Step 2: When the raw silk breaks, the photoelectric trigger rod connected to the pigtail ring loses the raw silk tension. Under the action of gravity, the photoelectric trigger rod rotates around the bearing and falls, triggering the photoelectric sensor. The photoelectric sensor triggers and transmits the broken silk signal.

[0018] The nouns, conjunctions or adjectives involved in the above technical solution are explained as follows:

[0019] A fixed connection is a connection in which parts or components are fixed without any relative movement. There are two types of connections: detachable and non-detachable.

[0020] (1) A removable connection is a method of fastening components together using screws, splines, wedge pins, etc. This type of connection allows for disassembly during maintenance without damaging the components. However, the connectors used must be of the correct specifications (e.g., length of bolts, keys, wedge pins) and properly tightened.

[0021] (2) Non-detachable connections mainly refer to welding, riveting, and tenoning. Since they require forging, sawing, or oxygen cutting to disassemble during repair or replacement, spare parts generally cannot be reused. At the same time, when making connections, attention should be paid to workmanship quality, technical inspection, and remedial measures (such as calibration, polishing, etc.).

[0022] A threaded connection refers to a detachable connection in which the connected parts are connected together using a threaded part (or the threaded part of the connected parts).

[0023] A sliding connection is when two objects are in contact but not fixed and can slide relative to each other.

[0024] A rotational connection is a connection between parts that allows the parts to rotate relative to each other.

[0025] Beneficial effects of the present invention: 1. The present invention constrains the raw silk on the broken silk sensing device of the cutting machine through a pigtail ring, and uses the tension of the raw silk to make the photoelectric trigger rod tilt and be in a balanced state. When the raw silk breaks, the tension on the pigtail ring will disappear, and the photoelectric trigger rod will lose its balance. Under the action of gravity, the photoelectric trigger rod and the pigtail ring will rotate together, and the end of the photoelectric trigger rod away from the sensor housing will fall, triggering the photoelectric sensor. The photoelectric sensor transmits a signal to provide monitoring for whether the raw silk is broken.

[0026] 2. The present invention can provide broken wire detection for various raw silks or various low-tension, thin-diameter silk threads by adjusting the counterweight of the sensor's mechanical part. At the same time, in order to adapt to the wire feeding method of the cutting machine, a pigtail ring is used as a constraint mechanism for vertical wire feeding, which effectively solves the problem of wire derailment during the raw silk feeding process.

[0027] 3. The present invention can effectively reduce the problem of false touch caused by vibration during wire feeding by using the tensioning device above the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] Figure 1 It is an exploded view of the overall structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 3 Schematic diagram of the structure of the rotation trigger unit of the present invention;

[0032] Figure 4 This is a schematic structural diagram of the present invention in a working state when the wire is not broken;

[0033] Figure 5 This is a schematic structural diagram of the present invention in the working state when the wire is broken;

[0034] Figure 6 Schematic diagram of the structure of the photoelectric trigger rod of the present invention;

[0035] Figure 7 It is a structural schematic diagram of the sensor housing of the present invention;

[0036] In the figure: 3. Sensor housing; 4. Fastening bolt; 5. Photoelectric sensor; 11. Photoelectric trigger rod; 12. Bearing; 13. Pigtail ring; 14. Counterweight screw; 15. Bushing; 21. Tensioning rod; 22. Tensioning rod holder; 31. First gear bar; 32. Second gear bar; 33. Mounting plate; 111. Hook structure; 112. Arc-shaped shielding strip. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0039] Example 1:

[0040] like Figures 1 to 7 As shown, a broken silk sensing device of a cutting machine that can adapt to the tension of raw silk includes a sensor housing 3, a photoelectric trigger rod 11 and a pigtail ring 13 are rotatably connected to the top of the sensor housing 3 and between the side walls on both sides of the sensor housing 3, the photoelectric trigger rod 11 and the pigtail ring 13 are fixedly connected, and a photoelectric sensor 5 is fixedly connected to the bottom of the sensor housing 3 and between the side walls on both sides of the sensor housing 3.

[0041] When the present invention is in use, the raw silk is passed through the pigtail ring 13, and the raw silk is constrained on the broken silk sensing device of the cutting machine by the pigtail ring 13. The tension of the raw silk is used to make the photoelectric trigger rod 11 tilt and be in a balanced state. When the raw silk breaks, the tension on the pigtail ring 13 will disappear, and the photoelectric trigger rod 11 will lose its balance. Under the action of gravity, the photoelectric trigger rod 11 and the pigtail ring 13 rotate together, and the end of the photoelectric trigger rod 11 away from the sensor housing 3 falls to trigger the photoelectric sensor 5. The photoelectric sensor 5 transmits a signal to provide monitoring for whether the raw silk is broken.

[0042] A photoelectric sensor is a device that converts light signals into electrical signals. Photoelectric sensors are controlled by converting changes in light intensity into changes in electrical signals. Generally, a photoelectric sensor consists of three parts: a transmitter, a receiver, and a detection circuit. The transmitter emits a light beam at a target. The emitted light typically comes from a semiconductor light source, such as a light-emitting diode (LED), a laser diode, or an infrared emitting diode. The light is emitted continuously or with varying pulse widths. The receiver consists of a photodiode, a phototransistor, and a photocell. Optical components such as lenses and apertures are located in front of the receiver. Behind it is the detection circuit, which filters out the valid signal and applies it.

[0043] In one embodiment of the present invention, the end of the photoelectric trigger rod 11 away from the sensor housing 3 is provided with an arc-shaped hook structure 111, and an arc-shaped shielding strip 112 is fixedly connected to the circumference of the hook structure 111. When the raw silk breaks, the tension on the pigtail 13 disappears. Since the end of the photoelectric trigger rod 11 away from the sensor housing 3 is provided with an arc-shaped hook structure 111, the weight increases, making the photoelectric trigger rod 11 more likely to lose its balance. Under the action of gravity, the photoelectric trigger rod 11 and the pigtail 13 are more likely to rotate together. The provision of the arc-shaped shielding strip 112 increases the triggering area, making it easier for the arc-shaped shielding strip 112 to trigger the photoelectric sensor 5.

[0044] In one embodiment of the present invention, a threaded hole is provided on the photoelectric trigger rod 11 near the hook structure 111, and a counterweight screw 14 is threadedly connected to the threaded hole. By installing counterweight screws 14 of different weights, the tension of different silk threads can be adapted.

[0045] In one embodiment of the present invention, a tensioning rod holder 22 is detachably connected to the sidewall of the top end of the sensor housing 3. A tensioning rod 21 is fixedly connected to the end of the tensioning rod holder 22, which is away from the sensor housing 3. The tensioning rod 21 is located above the pigtail ring 13. The raw silk is guided by the tensioning rod 21 and shuttled through the pigtail ring 13, effectively reducing the problem of jitter and false touch during the wire feeding process.

[0046] In one embodiment of the present invention, the tensioning rod 21 is a cylindrical rod with a smooth surface. Raw silk will rub against the tensioning rod 21 during rapid threading. By configuring the tensioning rod 21 as a cylindrical rod with a smooth outer surface, friction between the raw silk and the tensioning rod 21 during rapid threading can be reduced, thereby reducing the rate of wear and tear of the tensioning rod 21.

[0047] In one embodiment of the present invention, a first stop bar 31 is fixedly connected between the side walls of the sensor housing 3 and located at the upper end of the sensor housing 3. When the first stop bar 31 contacts the photoelectric trigger rod 11 or the pigtail ring 13, it can limit the rotation angle of the photoelectric trigger rod 11 and the pigtail ring 13 in the clockwise direction.

[0048] In one embodiment of the present invention, a second stop bar 32 is fixedly connected between the side walls of the sensor housing 3 and located at the lower end of the sensor housing 3. When the second stop bar 32 contacts the photoelectric trigger rod 11, it can limit the rotation angle of the photoelectric trigger rod 11 and the pigtail ring 13 in the counterclockwise direction.

[0049] In one embodiment of the present invention, an angle is formed between the photoelectric trigger rod 11 and the pigtail 13. This design is designed so that when the raw silk breaks, the tension in the pigtail 13 disappears, causing the photoelectric trigger rod 11 to lose its balance. Under the action of gravity, the photoelectric trigger rod 11 and the pigtail 13 rotate counterclockwise together, causing the end of the photoelectric trigger rod 11 away from the sensor housing 3 to fall, thereby triggering the photoelectric sensor 5. The photoelectric sensor 5 transmits a signal to monitor whether the raw silk is broken.

[0050] In one embodiment of the present invention, a mounting plate 33 is fixedly connected to the bottom of the sensor housing 3, and mounting holes are defined in the mounting plate 33. The raw silk breakage sensor is fixed to the frame of the wire breaking machine via screws, and reciprocates with the machine. Therefore, the mounting plate 33 is connected to the machine and is secured to the frame of the machine via screws passing through the mounting holes in the mounting plate 33.

[0051] Furthermore, since the photoelectric trigger rod 11, pigtail ring 13, and tension rod holder 22 are detachably mounted on the sensor housing 3, specifically, the photoelectric trigger rod 11 is provided with a bearing holder and a sleeve on the side of the bearing holder. The pigtail ring 13 is connected to the photoelectric trigger rod 11 via the sleeve on the side of the bearing holder. The bearing 12 is fixedly mounted on the bearing 12 holder of the photoelectric trigger rod 11. The bearing 12 is connected to the shaft sleeve 15 via the fastening bolt 4. The photoelectric trigger rod 11 rotates via the bearing 12 on the fastening bolt. The tension rod holder 22 is provided with an axis fixing seat, which is connected to the tension rod 21 via the axis fixing seat. The tension rod holder 22 is provided with a threaded through hole, and the tension rod holder 22 is fixed to the sensor housing 3 via the fastening bolt 4.

[0052] Example 2:

[0053] A method for using a broken silk sensing device for a cutting machine capable of adapting to raw silk tension, the method comprising the following specific steps:

[0054] Step 1: The raw silk broken wire sensing device is fixed to the frame of the wire cutting machine by screws, and reciprocates left and right with the wire cutting machine. When the raw silk vertically passes through the pigtail ring 13 in the broken wire sensing device of the cutting machine, the photoelectric trigger rod 11 connected to the pigtail ring 13 rotates around the bearing and moves away from the trigger range of the photoelectric sensor 5.

[0055] Step 2: When the raw silk breaks, the photoelectric trigger rod 11 connected to the pigtail ring 13 loses the raw silk tension. Under the action of gravity, the photoelectric trigger rod 11 rotates around the bearing and falls to trigger the photoelectric sensor 5. The photoelectric sensor 5 is triggered and transmits a broken silk signal.

[0056] This broken-wire sensing device integrates the raw silk and a rotary trigger as a single unit, indirectly using the rotary trigger instead of the raw silk as the detection target for the photoelectric trigger lever. This indirect triggering method enables real-time monitoring of the raw silk condition while preventing false positives caused by silk vibration, significantly improving the stability and response speed of broken-wire detection. To enhance the sensitivity and reliability of the sensing device, a seesaw-shaped rotary trigger is employed. Counterweights and raw silk tension act as a counterbalance at both ends of the trigger. Adjusting the distance between the counterweight and the bearing allows for adaptability to varying silk tensions. To accommodate the wire feed path of the cutter, the device uses a vertical feeding method. A pigtail structure is also employed to restrain the raw silk, effectively reducing the risk of unhooking. The system's built-in tensioner significantly reduces false alarms caused by raw silk vibration. This compact and efficient design occupies a small space and is easily compatible with existing raw silk cutters. The low-cost and widely adaptable sensor further enhances the device's economic benefits.

[0057] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0058] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications are intended to fall within the scope of the present invention.

Claims

1. A wire-broken sensing device for a cutting machine capable of adapting to the tension of raw silk, comprising a sensor housing (3), characterized in that: A photoelectric trigger rod (11) and a pigtail ring (13) are rotatably connected at the top end of the sensor housing (3) and between the side walls on both sides of the sensor housing (3); the photoelectric trigger rod (11) and the pigtail ring (13) are fixedly connected; and a photoelectric sensor (5) is fixedly connected at the bottom end of the sensor housing (3) and between the side walls on both sides of the sensor housing (3).

2. A wire-broken sensing device for a cutting machine capable of adapting to raw silk tension according to claim 1, characterized in that: An arc-shaped hook structure (111) is provided on one end of the photoelectric trigger rod (11) away from the sensor housing (3), and an arc-shaped shielding strip (112) is fixedly connected to the circumference of the hook structure (111).

3. The broken wire sensing device for a cutting machine capable of adapting to the tension of raw silk according to claim 2, characterized in that: A threaded hole is provided on the photoelectric trigger rod (11) near the hook structure (111), and a counterweight screw (14) is threadedly connected in the threaded hole.

4. The broken wire sensing device for a cutting machine capable of adapting to the tension of raw silk according to claim 1, characterized in that: A tension rod holder (22) is detachably connected to the side wall at the top of the sensor housing (3); a tension rod (21) is fixedly connected to the end of the tension rod holder (22) away from the sensor housing (3); and the tension rod (21) is located above the pigtail ring.

5. The broken wire sensing device for a cutting machine capable of adapting to the tension of raw silk according to claim 4, characterized in that: The tensioning rod (21) is a cylindrical rod-shaped structure, and its surface is smooth.

6. The broken wire sensing device for a cutting machine capable of adapting to raw silk tension according to claim 1, characterized in that: A first stop bar (31) located at the upper end of the sensor housing (3) is fixedly connected between the side walls on both sides of the sensor housing (3).

7. The broken wire sensing device for a cutting machine capable of adapting to the tension of raw silk according to claim 6, characterized in that: A second stop bar (32) located at the lower end of the sensor housing (3) is fixedly connected between the side walls on both sides of the sensor housing (3).

8. The broken silk sensing device for a cutting machine capable of adapting to the tension of raw silk according to claim 1, characterized in that: There is an angle between the photoelectric trigger rod (11) and the pigtail ring (13).

9. The broken wire sensing device for a cutting machine capable of adapting to raw silk tension according to claim 1, characterized in that: The bottom of the sensor housing (3) is fixedly connected to a mounting plate (33), and a mounting hole is provided on the mounting plate (33).

10. A method for using a wire-broken sensing device for a cutting machine capable of adapting to raw silk tension, using the wire-broken sensing device for a cutting machine capable of adapting to raw silk tension as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: The raw silk broken wire sensing device is fixed to the frame of the wire cutting machine by screws and moves back and forth with the wire cutting machine. When the raw silk vertically passes through the pigtail ring (13) in the wire breaking sensing device of the cutting machine, the photoelectric trigger rod (11) connected to the pigtail ring (13) rotates around the bearing and moves away from the trigger range of the photoelectric sensor (5); Step 2: When the raw silk breaks, the photoelectric trigger rod (11) connected to the pigtail ring (13) loses the raw silk tension. Under the action of gravity, the photoelectric trigger rod (11) rotates around the bearing and falls to trigger the photoelectric sensor (5). The photoelectric sensor (5) is triggered and transmits a broken silk signal.

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