Open type yarn sensor

Abstract

The utility model relates to the technical field of yarn sensors, and discloses an opening type yarn sensor which comprises an upper cover, a lower cover and a circuit board installed between the upper cover and the lower cover, the upper cover and the lower cover form an opening type structure, and a sensor element used for detecting the state of yarn is arranged on the circuit board. The signal processing circuit is connected with the sensor element, the sensor element is located at the opening, the sensor element comprises at least two groups of infrared geminate transistors, each group of infrared geminate transistors is composed of an infrared emitting diode and two infrared receiving tubes, and the included angle between the two infrared emitting diodes is larger than or equal to 45 degrees; according to the utility model, a circle of sensor elements such as six photoelectric sensors are arranged at the opening of the circuit board and are used for detecting the existence, tension, breakage and other states of the yarn, the shaking condition of the yarn is detected from all angles, the multi-dimensional non-contact real-time monitoring of the yarn is realized, and meanwhile, the replacement and maintenance of the yarn are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of yarn sensors, and specifically relates to an open-type yarn sensor. Background Technique

[0002] In the prior art, a yarn sensor with a closed design is used to detect the movement state of the yarn through two pairs or more pairs of infrared pairs of tubes. It has a low cost, but is susceptible to environmental vibration and inconvenient to clean. Especially in the environment where textile machinery runs at high speed, the vibration of the machine and the frame often causes unnecessary jitter of the yarn or the sensor itself, affecting the detection accuracy. In addition, the harsh working environment requires the sensor structure to be easy to clean to reduce the impact of dust accumulation on the detection performance. And the yarn sensor with a U-shaped opening design, combined with a graphic sensor element, although it can achieve basic detection functions, has problems such as high cost and complex process. Therefore, it is necessary to develop an open-type yarn sensor with low cost, easy to clean and capable of detecting the movement state of the yarn. Content of the Utility Model

[0003] (I) Technical Problems to be Solved

[0004] To solve the problems existing in the above-mentioned prior art, the utility model provides an open-type yarn sensor, which has the advantages of low cost, easy to clean, capable of realizing multi-dimensional real-time monitoring of the yarn, and at the same time facilitating the replacement and maintenance of the yarn, improving production efficiency and equipment flexibility.

[0005] (II) Technical Solutions

[0006] To achieve the purpose of reasonable structural design, being able to be conveniently installed on textile machinery, realizing multi-dimensional real-time monitoring of the yarn, and at the same time facilitating the replacement and maintenance of the yarn, improving production efficiency and equipment flexibility, the utility model provides the following technical solutions: An open-type yarn sensor includes an upper cover, a lower cover, and a circuit board installed between the upper cover and the lower cover. The upper cover and the lower cover form an open structure. The circuit board is provided with sensor elements for detecting the state of the yarn and a signal processing circuit connected thereto. The sensor elements are located at the opening. The sensor elements include at least two groups of infrared pairs of tubes. Each group of infrared pairs of tubes consists of an infrared emitting diode and two infrared receiving tubes, and the included angle between the two infrared emitting diodes is greater than or equal to 45 degrees.

[0007] Preferably, the upper cover and the lower cover are fixed by a detachable connection method.

[0008] Preferably, the sensor elements are photoelectric sensors.

[0009] Preferably, a transmissive structure is formed between the infrared emitting diode and the infrared receiving tube.

[0010] Preferably, the photoelectric sensor includes a first infrared emitting diode and a second infrared emitting diode disposed at the outermost side of the opening end, and four infrared receiving tubes disposed at the opening. The included angle between the first infrared emitting diode and the second infrared emitting diode is 50°.

[0011] Preferably, the inner surfaces of the upper cover and the lower cover are provided with guide chutes.

[0012] Preferably, the upper cover and the lower cover are made of lightweight and high-strength materials.

[0013] Preferably, it further includes a dust cover detachably mounted on the upper cover or the lower cover.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the present utility model provides an open-type yarn sensor, which has the following beneficial effects:

[0016] This open-type yarn sensor, by designing an open-type yarn sensor, arranges a circle of sensor elements at the opening to detect the jitter condition of the yarn from various angles, realizing multi-dimensional non-contact real-time monitoring of the yarn. Meanwhile, it is convenient for the replacement and maintenance of the yarn. A transmissive structure is formed between the infrared emitting diode and the infrared receiving tube. The included angle between the first infrared emitting diode and the second infrared emitting diode is 50°. The angle for the infrared receiving tube to receive infrared light is 10 - 20 degrees, and small-angle reception is adopted to obtain more graphic information, improving the detection accuracy. Brief Description of the Drawings

[0017] Figure 1 is an exploded view of the overall structure of the present utility model;

[0018] Figure 2 is a schematic diagram of the structure of the upper cover of the present utility model;

[0019] Figure 3 is a schematic diagram of the structure of the lower cover of the present utility model;

[0020] Figure 4 is a schematic diagram of the structure of the circuit board of the present utility model;

[0021] Figure 5 is a schematic diagram of the included angle between the emitting diode and the receiving tube of the present utility model.

[0022] In the figure: 1. Upper cover; 11. Guide chute; 2. Circuit board; 21. Opening; 22. First infrared emitting diode; 23. Second infrared emitting diode; 24. First infrared receiving tube; 25. Second infrared receiving tube; 26. Third infrared receiving tube; 27. Fourth infrared receiving tube; 3. Lower cover; 4. Dust cover. Detailed Embodiments

[0023] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] As Figures 1-4 shown, an open - type yarn sensor includes an upper cover 1, a lower cover 3, and a circuit board 2 installed between the upper cover 1 and the lower cover 3. The upper cover 1 and the lower cover 3 form an open - type structure. The circuit board 2 is provided with sensor elements for detecting the state of the yarn and a signal processing circuit connected thereto. The sensor elements are located at the opening 21. The sensor elements include two groups of infrared pairs of tubes. Each group of infrared pairs of tubes consists of an infrared emitting diode and two infrared receiving tubes. The included angle between the two infrared emitting diodes is 50°, so as to ensure that the coverage range and accuracy of the infrared signal meet the design requirements. The setting of this angle is determined through precise calculation and testing to achieve the best signal transmission effect, thereby realizing non - contact monitoring of the yarn in multiple dimensions. The six sensor elements provided on the circuit board 2 are distributed at different positions or angles at the opening 21, enabling the sensor to achieve multi - dimensional monitoring of the yarn state. This includes, but is not limited to, the diameter, speed, tension, vibration, breakage, and possible foreign object attachment of the yarn. The multi - dimensional monitoring ability greatly improves the accuracy and comprehensiveness of the monitoring, helping to detect and handle potential problems in a timely manner.

[0025] In an embodiment of the present utility model, the upper cover 1 and the lower cover 3 are fixed by a detachable connection method, which is convenient for opening for internal maintenance or replacing the yarn. The detachable connection method enables the upper cover 1 and the lower cover 3 to be easily separated, allowing the operator to directly access the circuit board 2, sensor elements, and other related components inside the sensor. This design greatly simplifies the maintenance process of the sensor, making it faster and more convenient to inspect, clean, debug, or replace damaged components. When the sensor needs regular maintenance or malfunctions, the user does not need to disassemble the entire device, but only needs to simply remove the upper cover 1 or the lower cover 3 to complete the maintenance work, effectively reducing the maintenance cost and time.

[0026] In an embodiment of the present utility model, the sensor element is a photoelectric sensor, which includes a first infrared emitting diode 22 and a second infrared emitting diode 23 disposed at the outermost side of the open end, and a first infrared receiving tube 24, a second infrared receiving tube 25, a third infrared receiving tube 26, and a fourth infrared receiving tube 27 disposed at the opening. The included angle between the first infrared emitting diode 22 and the second infrared emitting diode 23 is 50°, which is used to detect the presence and state of the yarn through the change of the optical signal. The infrared emitting diode selects an emitting diode with a larger angle to cover the shaded area (yarn activity area) in the figure. The infrared receiving tube selects two receiving tubes with small angles and faces the center of the detection area, and the combination covers the shaded area in the figure to improve the detection resolution. The photoelectric sensor detects the presence and state of the yarn through the change of the optical signal between the transmitter and the receiver. Since the optical signal is very sensitive to the minute changes of the object, the photoelectric sensor can monitor the diameter, position, and whether there is a break of the yarn with high precision. The non-contact working principle of the photoelectric sensor avoids the problems of performance degradation and false alarms that may be caused by friction, wear, or contamination of the traditional contact sensors. This non-contact detection method not only improves the detection accuracy but also extends the service life of the sensor.

[0027] In an embodiment of the present utility model, a opposed structure is formed between the infrared emitting diode and the infrared receiving tube to improve the detection accuracy. The opposed structure can ensure that the optical signal forms a straight-line propagation path between the transmitter and the receiver, reducing false alarms caused by light scattering, reflection, or refraction. At the same time, since the optical path is clearly defined, any occlusion of the optical path will be accurately detected, thereby reducing the possibility of missed alarms. The separation of the transmitter and the receiver makes the optical path more concentrated and stable, improving the detection sensitivity of the sensor to the state of the yarn. Even if the yarn undergoes a small offset or break, it can be quickly detected and responded to.

[0028] In an embodiment of the present utility model, guide chutes 11 are provided on the inner surfaces of the upper cover 1 and the lower cover 3. The design of the guide chutes 11 can guide the yarn to pass smoothly through the sensor area along a predetermined path, reducing the direct contact between the yarn and the internal structure of the sensor, thereby reducing friction and resistance. This not only helps to protect the yarn from damage but also ensures the stability of the yarn during transmission. Through the restraint of the guide chutes 11, the yarn can move in the correct position and direction, effectively preventing problems such as yarn offset or entanglement during transmission. This is of great significance for improving production efficiency and product quality.

[0029] In an embodiment of the present utility model, the upper cover 1 and the lower cover 3 are made of lightweight and high-strength materials; the use of lightweight materials greatly reduces the overall weight of the sensor, making the installation and movement more convenient and fast. This is particularly important for rapid deployment and adjustment on the production line; the lighter weight means that the requirements for the installation structure of the sensor are lower, reducing mechanical stress problems caused by excessive weight. This helps to extend the service life of the installation structure and the sensor.

[0030] In an embodiment of the present utility model, it further includes a dust-proof cover 4, which is detachably installed on the upper cover 1 or the lower cover 3; the dust-proof cover 4 can effectively block dust, fibers and other impurities in the air from entering the interior of the sensor, protecting key components such as the photoelectric sensor and the circuit board 2 from pollution and damage. This helps to extend the service life of the sensor and improve stability and reliability.

[0031] Working principle: The open-type yarn sensor of the present utility model is composed of an upper cover 1, a lower cover 3 and a circuit board 2. An opening is formed between the upper cover 1 and the lower cover 3 to allow the yarn to pass through freely. The circuit board 2 is installed between the upper cover 1 and the lower cover 3, and sensor components such as photoelectric sensors are arranged thereon to detect the presence, tension and breakage status of the yarn. The sensor components convert the detected signals into recognizable electrical signals through a signal processing circuit and transmit them to an external receiving device in a wired or wireless manner; the upper cover 1 and the lower cover 3 are detachably connected, such as by screw fixation or snap connection, to facilitate the user to open for internal maintenance or yarn replacement. In addition, guide chutes 11 can be provided on the inner surfaces of the upper cover 1 and the lower cover 3 to guide the yarn to pass smoothly through the opening, reducing friction and wear; in order to improve the detection accuracy, a transmissive structure is formed between the infrared emitting diode and the infrared receiving tube of the photoelectric sensor. The included angle between the two infrared emitting diodes is 45 degrees, and the receiving angles of the four infrared receiving tubes are 10 - 20°, with small-angle reception to obtain more graphic information. In addition, the design of the dust-proof cover 4 can effectively protect the sensor components from dust and impurities, extending the service life.

[0032] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0033] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An open-ended yarn sensor, characterized in that: The invention comprises an upper cover (1), a lower cover (3) and a circuit board (2) installed between the upper cover (1) and the lower cover (3), wherein the upper cover (1) and the lower cover (3) form an open structure, and the circuit board (2) is provided with a sensor element for detecting the state of the yarn, and a signal processing circuit connected thereto, wherein the sensor element is located at the opening (21), and the sensor element comprises at least two groups of infrared pairs of tubes, each group of infrared pairs of tubes comprises an infrared emitting diode and two infrared receiving tubes, and the angle between the two infrared emitting diodes is greater than or equal to 45 degrees.

2. An open-end yarn sensor according to claim 1, characterized in that: The upper cover (1) and the lower cover (3) are fixed in a detachable connection manner.

3. An open-end yarn sensor according to claim 1, characterized in that: The sensor element is a photoelectric sensor.

4. An open-end yarn sensor according to claim 3, characterized in that: A counter-radiation structure is formed between the infrared emitting diode and the infrared receiving tube.

5. The open-end yarn sensor according to claim 3, characterized in that: The photoelectric sensor comprises a first infrared emitting diode (22) and a second infrared emitting diode (23) arranged at the outermost sides of an opening, and four infrared receiving tubes arranged at the opening, wherein the angle between the first infrared emitting diode (22) and the second infrared emitting diode (23) is 50°.

6. An open-end yarn sensor according to claim 1, characterized in that: The inner surfaces of the upper cover (1) and the lower cover (3) are provided with guide grooves (11).

7. An open-end yarn sensor according to claim 1, characterized in that: The upper cover (1) and the lower cover (3) are made of lightweight and high-strength materials.

8. The open-end yarn sensor according to claim 1, characterized in that: It also includes a dust cover (4) which is detachably mounted on the upper cover (1) or the lower cover (3).

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