Broken yarn detection and alarm device and yarn binding machine

Abstract

The utility model relates to a broken yarn detection alarm device and a yarn binding machine, a yarn tension detection piece is mounted on the inner wall of a yarn binding machine aircraft and can rotate along with the yarn binding machine aircraft, and a detection end of the yarn tension detection piece is connected with a swing rod; under the normal condition, the yarn pressing and holding part of the swing rod is pressed and held by the released yarn between the yarn guide wheel of the yarn binding machine aircraft and the yarn binding machine head, and the yarn tension detection piece can detect that the yarn has tension; when the yarn is broken, the yarn pressing part cannot be pressed, the yarn tension detection piece can detect that no tension exists, the mode is timely in detection, rotation speed difference does not need to be calculated, hysteresis does not exist, and material waste is reduced; knotted, wound and broken yarns can be accurately detected and are not influenced by the size of a sand ball, and the detected yarn breaking rate is stable.

Description

Technical Field

[0001] The present application relates to the technical field of cable yarn binding technology, and in particular to a yarn break detection alarm device and a yarn binding machine. Background Art

[0002] At present, the yarn package of the yarn binding machine equipment is coaxially sleeved on the outside of the yarn binding machine head, the aircraft is coaxially arranged with the yarn binding machine head, and the yarn binding machine head is located in the aircraft; the aircraft rotates with the central axis of the yarn binding machine head as the rotation axis, thereby releasing the yarn from the yarn package, and then entering the yarn binding machine head through the guide wheel.

[0003] The conventional yarn break detection method uses the speed difference method between the aircraft and the yarn ball, but it is difficult to detect when the following situations exist, for example:

[0004] (1) When the yarn is broken but tangled, it cannot be detected using the speed difference method. In addition, the detection accuracy is easily affected by the size of the yarn ball, and the detected yarn breakage rate is unstable.

[0005] (2) There is often a certain lag in the detection method of the difference between the aircraft and the yarn ball speed, that is, a certain time delay is required to determine the change in the yarn ball speed after the yarn breaks, which causes a waste of yarn materials.

[0006] (3) When the yarn is released from the yarn ball under the action of the flying device, there are situations where the yarn breaks or is thrown away. The speed difference method between the flying device and the yarn ball cannot specifically detect whether it is broken yarn or thrown yarn. Utility Model Content

[0007] The embodiments of the present application provide a yarn break detection alarm device and a yarn binding machine to solve the problems of hysteresis in detection of the speed difference between an aircraft and a yarn ball and instability in the detected yarn break rate in the related art.

[0008] In a first aspect, a yarn break detection and alarm device is provided, comprising:

[0009] A swing rod, one end of which has a yarn holding portion;

[0010] The yarn tension detection part has a detection end connected to the other end of the swing rod; the yarn tension detection part is used to be installed on the inner wall of the yarn binding machine aircraft; wherein the yarn of the yarn holding part is the yarn between the yarn guide wheel of the yarn binding machine aircraft and the yarn binding machine head.

[0011] In some embodiments, the yarn tension detection component includes a micro switch, which is transmission-connected to the rocker rod; the micro switch is used to disconnect when the yarn has tension, and to connect under the action of the rocker rod when there is no tension.

[0012] In some embodiments, the yarn tension detecting member includes a pressure sensor, and the pressure sensor is used to detect whether the swing arm is subjected to pressure when the yarn tension of the yarn holding portion changes.

[0013] In some embodiments, the yarn tension detection member is connected to a mounting plate, and the mounting plate is used to be connected to the inner wall of the yarn binding machine aircraft;

[0014] The yarn guide wheel and the yarn tension detecting member are respectively mounted on opposite sides of the mounting plate.

[0015] In some embodiments, the swing rod is L-shaped as a whole and is made of a rigid cylindrical material; the diameter of the cylindrical material is less than or equal to the diameter of the yarn;

[0016] The yarn holding portion is a part of an L-shape.

[0017] In some embodiments, the swing rod further includes an L-shaped portion, which is made of a rigid cylindrical material; the diameter of the cylindrical material is less than or equal to the diameter of the yarn;

[0018] The yarn pressing portion is connected to an end of the L-shaped portion away from the yarn tension detecting member; and the yarn pressing portion is in a circular shape.

[0019] In some embodiments, the yarn tension detection member is further connected to a wireless signal transmitting component; the wireless signal transmitting component is wirelessly connected to a signal receiving component; the signal receiving component is connected to a controller, and the controller is connected to an alarm;

[0020] The controller is used to control the alarm to sound an alarm if the duration of the yarn tension disappearance signal received by the signal receiving component exceeds the set time; and to send a yarn throwing signal if the duration of the yarn tension disappearance signal received by the signal receiving component is less than the set time.

[0021] In some embodiments, the wireless signal transmitting component is installed on the inner wall or outer wall of the yarn binding machine aircraft.

[0022] In some embodiments, the wireless signal transmitting component includes a shell, in which a battery and a signal transmitting unit are arranged; the signal transmitting unit is connected to the yarn tension detecting element by wire, and is connected to the signal receiving component wirelessly.

[0023] In a second aspect, a yarn binding machine is provided, which comprises: the above yarn breakage detection and alarm device.

[0024] The beneficial effects of the technical solution provided by this application include:

[0025] The embodiment of the present application provides a yarn break detection alarm device and a yarn binding machine. Since the yarn tension detection part is installed on the inner wall of the yarn binding machine aircraft, it can rotate with the yarn binding machine aircraft, and its detection end is connected to a rocker arm. Under normal circumstances, the yarn pressing part of the rocker arm presses the yarn between the yarn guide wheel of the yarn binding machine aircraft and the yarn binding machine head, and the yarn tension detection part can detect that the yarn has tension. When the yarn is broken, the yarn pressing part will not be pressed, and the yarn tension detection part can detect that there is no tension. This method is timely for detection, does not need to calculate the speed difference, does not have hysteresis, and reduces material waste. Knotted, entangled and broken yarns can be accurately detected and are not affected by the size of the sand ball, and the detected yarn breakage rate is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 A schematic diagram of the planar structure of a yarn break detection and alarm device provided in an embodiment of the present application;

[0028] Figure 2 A three-dimensional schematic diagram of a yarn break detection alarm device provided in an embodiment of the present application installed on a yarn binding machine aircraft;

[0029] Figure 3 A schematic diagram of the internal structure of the yarn binding machine aircraft provided in an embodiment of the present application.

[0030] In the figure: 1. rocker arm; 100. yarn holding part; 2. yarn tension detection part; 200. micro switch; 3. yarn guide wheel; 4. yarn binding machine head; 5. yarn binding machine aircraft; 6. mounting plate; 7. wireless signal transmitting component; 8. signal receiving component; 9. controller; 10. alarm. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0032] It should be understood that for this application, Figure 2The yarn binding machine shown in the figure, that is, the yarn package is coaxially sleeved on the outside of the yarn binding machine head, the aircraft is coaxially arranged with the yarn binding machine head, and the yarn binding machine head is located in the aircraft; during the rotation of the aircraft with the central axis of the yarn binding machine head as the rotation axis, the yarn is gradually released from the yarn package with the rotation of circles, and then the yarn enters the yarn binding machine head through the guide wheel, and the speed difference method between the aircraft and the yarn ball is used to detect the problems of yarn breakage:

[0033] (1) When the yarn is broken but tangled, it cannot be detected using the speed difference method. In addition, the detection accuracy is easily affected by the size of the yarn ball, and the detected yarn breakage rate is unstable.

[0034] (2) There is often a certain lag in the detection method of the difference between the aircraft and the yarn ball speed, that is, a certain time delay is required to determine the change in the yarn ball speed after the yarn breaks, which causes a waste of yarn materials.

[0035] (3) When the yarn is released from the yarn ball under the action of the flying device, there are situations where the yarn breaks or is thrown away. The speed difference method between the flying device and the yarn ball cannot specifically detect whether it is broken yarn or thrown yarn.

[0036] The embodiments of the present application provide a yarn break detection alarm device and a yarn binding machine, which can solve the above problems. First, a detailed description is given of the problems of hysteresis in detection of the speed difference between the aircraft and the yarn ball and instability in detecting the yarn break rate in the related art.

[0037] See also Figure 1-Figure 3 , a yarn break detection and alarm device, comprising:

[0038] A swing rod 1, one end of which has a yarn holding portion 100;

[0039] The yarn tension detection part 2 has a detection end connected to the other end of the rocker arm 1; the yarn tension detection part 2 is used to be installed on the inner wall of the yarn binding machine aircraft 5; wherein, the yarn pressed by the yarn holding part 100 is the yarn between the yarn guide wheel 3 and the yarn binding machine head 4 of the yarn binding machine aircraft 5.

[0040] Since the yarn tension detection part 2 is installed on the inner wall of the yarn binding machine aircraft 5, it can rotate with the yarn binding machine aircraft 5, and can detect in real time whether the yarn is broken during the process of yarn package release, which can adapt to various speed requirements; at the same time, the detection end of the yarn tension detection part 2 is connected to the swing rod 1; under normal circumstances, the yarn pressing part 100 of the swing rod 1 is pressed by the yarn between the yarn guide wheel 3 and the yarn binding machine head 4 of the yarn binding machine aircraft 5, and the yarn tension detection part 2 can detect that the yarn has tension; when the yarn is broken, the yarn pressing part 100 will not be pressed, and the yarn tension detection part 2 can detect that there is no tension. This kind of detection method can detect the yarn breakage in time, and the absence of tension proves that the yarn is broken. There is no need to calculate the speed difference, there is no hysteresis, and material waste is reduced. The knotted and entangled broken yarn can be accurately detected, and it is not affected by the size of the sand ball, and the detected yarn breakage rate is stable.

[0041] In some preferred embodiments, the specific detection and characterization tension form of the yarn tension detection member 2 is described as follows:

[0042] The first type is that the yarn tension detection member 2 includes a micro switch 200, which is transmission-connected to the rocker 1; the micro switch 200 is used to disconnect when the yarn has tension, and to connect under the action of the rocker 1 when there is no tension.

[0043] In this form, when there is no tension, the pressed rocker 1 will be displaced, and the displacement of the rocker 1 will toggle the micro switch 200, so that the micro switch 200 is connected, which is considered to be a yarn break. When there is tension, the pressed rocker 1 will not be displaced, and the micro switch 200 is in the disconnected state. In this way, the judgment is made by using two electrical signals of disconnection and connection, which can reduce the logical operations of the judgment, reduce the processing operations of the controller, and is simple and accurate.

[0044] Second, the yarn tension detecting member 2 includes a pressure sensor, and the pressure sensor is used to detect whether the swing rod 1 is subjected to pressure when the yarn tension of the yarn holding portion 100 changes.

[0045] In this form, when there is no tension, the pressed pendulum 1 will not be subjected to pressure, and the detection value of the pressure sensor is close to zero; when there is tension, the pressed pendulum 1 will be subjected to pressure, and the detection value of the pressure sensor is not zero. In this way, the judgment is made through the two electrical signals of whether there is pressure, and there is no need to consider the specific pressure value. The accuracy requirements for the sensor can be reduced, the logical operations of the judgment can be reduced, the processing operations of the controller can be reduced, and it is simple and accurate.

[0046] Furthermore, in both structural forms, the yarn tension detection member 2 is connected to a mounting plate 6, and the mounting plate 6 is used to be connected to the inner wall of the yarn binding machine aircraft 5; the yarn guide wheel 3 and the yarn tension detection member 2 are respectively installed on opposite sides of the mounting plate 6.

[0047] The advantage of such an arrangement is that the yarn at the yarn guide wheel 3 is basically relatively stable during the pay-off process without too much fluctuation.

[0048] In some preferred embodiments, the swing rod 1 has the following configuration:

[0049] The first type is that the swing rod 1 is L-shaped as a whole and is made of a rigid cylindrical material; the diameter of the cylindrical material is less than or equal to the diameter of the yarn; and the yarn holding portion 100 is a part of the L-shape. The rigid cylindrical material may be steel.

[0050] The second type is that the swing rod 1 further includes an L-shaped portion, which is made of a rigid cylindrical material; the diameter of the cylindrical material is less than or equal to the diameter of the yarn; the yarn pressing portion 100 is connected to the end of the L-shaped portion away from the yarn tension detection member 2; the yarn pressing portion 100 is in a circular ring shape. This form is an improvement of the previous form, the yarn can pass through the circular ring shape, and is limited, and the pressing effect is enhanced.

[0051] In some preferred embodiments, since the yarn tension detection member 2 is rotating, the following settings are provided to facilitate signal transmission:

[0052] The yarn tension detection member 2 is also connected to a wireless signal transmitting component 7; the wireless signal transmitting component 7 is wirelessly connected to a signal receiving component 8; the signal receiving component 8 is connected to a controller 9, and the controller 9 is connected to an alarm 10;

[0053] The controller 9 is used to control the alarm 10 to alarm if the duration of the yarn tension disappearance signal received by the signal receiving component 8 exceeds the set time; if the duration of the yarn tension disappearance signal received by the signal receiving component 8 is less than the set time, a yarn throwing signal is issued.

[0054] Thus, the yarn break signal transmission adopts wireless transmission mode, and the device is fixed on the yarn binding machine aircraft 5 and rotates with the device to adapt to various speed requirements. In addition, the above setting time has the function of: setting the alarm connection delay through the program to avoid the false alarm of yarn break caused by yarn throwing, so that the controller sends the processed real alarm signal to the alarm device to realize real-time alarm. The alarm 10 can be an alarm light or a buzzer.

[0055] Furthermore, the wireless signal transmitting assembly 7 is mounted on the inner wall or outer wall of the yarn binding machine aircraft 5, but most preferably on the outer wall to avoid interference with larger yarn packages.

[0056] At the same time, in order to improve the convenience of power supply, it is inconvenient to rotate and provide power by wire. Therefore, the wireless signal transmitting component 7 includes a shell, in which a battery and a signal transmitting unit are arranged; the signal transmitting unit is connected to the yarn tension detection component 2 by wire, and is wirelessly connected to the signal receiving component 8.

[0057] The present application also proposes a yarn binding machine, which comprises: the above yarn breakage detection and alarm device.

[0058] The above yarn break detection alarm device solves all the technical problems stated in the background technology through the above description, and has the following technical effects:

[0059] (1) Small and light: Each part of the equipment is small in size and light in weight, which does not affect the stability of the yarn tension and has no additional requirements for the yarn threading operation;

[0060] (2) Wireless signal transmission: The yarn break signal is transmitted by wireless transmission, and the device rotates together with the yarn binding machine aircraft 5 to adapt to various speed requirements;

[0061] (3) Fast response to yarn breakage: The response speed after yarn breakage is faster than that of traditional detection methods. Traditional detection methods require a certain time delay to determine the change in yarn ball speed. This solution can alarm and shut down the machine immediately after yarn breakage;

[0062] (4) High accuracy: Traditional detection methods are greatly affected by equipment conditions and the flexibility of mechanical components, require frequent parameter adjustments, and have low accuracy. This solution has a higher detection rate and a lower false alarm rate; it reduces false alarms of yarn throwing.

[0063] The yarn break detection device has a yarn tension detection range of 0-5N, a design time of 1s, and a PLC controller. The wireless signal transmitting and receiving devices are conventional components in the prior art, and will not be described in detail here.

[0064] The yarn break detection alarm device is used in the production process of optical cables and cables, and can accurately detect yarn breakage and improve the quality of optical cables and cables.

[0065] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0066] It should be noted that, in this application, 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 such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0067] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A yarn break detection and alarm device, characterized in that: It includes: A swing rod (1), one end of which has a yarn holding portion (100); A yarn tension detection member (2), whose detection end is connected to the other end of the swing rod (1); the yarn tension detection member (2) is used to be installed on the inner wall of the yarn binding machine aircraft (5); wherein the yarn pressed by the yarn holding part (100) is the yarn between the yarn guide wheel (3) and the yarn binding machine head (4) of the yarn binding machine aircraft (5).

2. The yarn break detection and alarm device according to claim 1, characterized in that: The yarn tension detection member (2) comprises a micro switch (200) which is in transmission connection with the swing rod (1); the micro switch (200) is used to disconnect when the yarn has tension, and to connect under the action of the swing rod (1) when there is no tension.

3. The yarn break detection and alarm device according to claim 1, characterized in that: The yarn tension detection member (2) comprises a pressure sensor, and the pressure sensor is used to detect whether the swing rod (1) is subjected to pressure when the yarn tension of the yarn holding portion (100) changes.

4. The yarn break detection and alarm device according to claim 2 or 3, characterized in that: The yarn tension detection member (2) is connected to a mounting plate (6), and the mounting plate (6) is used to be connected to the inner wall of the yarn binding machine aircraft (5); The yarn guide wheel (3) and the yarn tension detection member (2) are respectively mounted on opposite sides of the mounting plate (6).

5. The yarn break detection and alarm device according to claim 1, characterized in that: The swing rod (1) is L-shaped as a whole and is made of a rigid cylindrical material; the diameter of the cylindrical material is less than or equal to the diameter of the yarn; The yarn holding portion (100) is a part of an L-shape.

6. The yarn break detection and alarm device according to claim 1, characterized in that: The swing rod (1) further comprises an L-shaped portion, which is made of a rigid cylindrical material; the diameter of the cylindrical material is less than or equal to the diameter of the yarn; The yarn pressing portion (100) is connected to an end of the L-shaped portion away from the yarn tension detecting member (2); the yarn pressing portion (100) is in the shape of a circular ring.

7. The yarn breakage detection and alarm device according to claim 1, characterized in that: The yarn tension detection element (2) is also connected to a wireless signal transmitting component (7); the wireless signal transmitting component (7) is wirelessly connected to a signal receiving component (8); the signal receiving component (8) is connected to a controller (9), and the controller (9) is connected to an alarm (10); The controller (9) is used to control the alarm (10) to sound an alarm if the duration of the yarn tension disappearance signal received by the signal receiving component (8) exceeds a set time; and to send a yarn throwing signal if the duration of the yarn tension disappearance signal received by the signal receiving component (8) is less than the set time.

8. The yarn breakage detection and alarm device according to claim 7, characterized in that: The wireless signal transmitting component (7) is installed on the inner wall or the outer wall of the yarn binding machine aircraft (5).

9. The yarn breakage detection and alarm device according to claim 8, characterized in that: The wireless signal transmitting component (7) comprises a housing, in which a battery and a signal transmitting unit are arranged; the signal transmitting unit is connected to the yarn tension detecting element (2) by wire, and is connected to the signal receiving component (8) by wireless.

10. A yarn binding machine, characterized in that: It includes: A yarn break detection and alarm device as described in any one of claims 1 to 9.

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