A warp knitting machine anti-misoperation broken yarn detection and self-stop device and method with flexible installation

Abstract

The present invention discloses a flexible installation warp knitting machine anti-mis-touch broken yarn detection and self-stop device and method, including: a broken yarn detection unit, the broken yarn detection unit includes a detection module; an angle detection unit, the angle detection unit is used to detect the rotation angle of the main shaft of the warp knitting machine; a control unit, the control unit pre-stores a mis-touch angle range, and is connected to the broken yarn detection unit, the angle detection unit, and the warp knitting machine control system, and is used to compare the rotation angle detected by the angle detection unit with the mis-touch angle range after receiving the detection signal of the broken yarn detection unit, and determine whether the detection signal of the broken yarn detection unit is valid according to the comparison result, so as to determine whether to send a stop signal to the warp knitting machine control system; the mis-touch angle range is the rotation angle range of the main shaft of the warp knitting machine corresponding to the detection module being triggered under non-broken yarn conditions. The present invention has the advantages of filtering out mis-touch signals, making the installation space unrestricted, and improving the detection sensitivity.

Description

Technical Field

[0001] The present application relates to the technical field of warp knitting machines, and particularly relates to a warp knitting machine anti-mis-touch broken yarn detection and self-stop device and method with flexible installation. Background Art

[0002] A warp knitting machine mainly consists of a loop-forming mechanism, a comb bar lateral displacement mechanism, a warp feeding mechanism, a pulling and coiling mechanism, and a transmission mechanism. The warp knitting machine has a wide adaptability to raw materials and fabric varieties, and the machine productivity is relatively high, so it has developed rapidly. The warp knitting mechanism includes a needle bed, a comb bar, a sinker bed, and a press plate, which are generally driven by a cam or an eccentric connecting rod; the comb bar lateral displacement mechanism is used to make the comb bar laterally displace according to the requirements of the knitted fabric structure during the loop-forming process, and pad the warp yarn on the needles so as to knit a knitted fabric with a certain tissue structure; the warp feeding mechanism is used to unwind the warp yarn on the warp beam and feed it into the knitting area; the pulling and coiling mechanism is used to pull the fabric out of the knitting area at a predetermined speed and wind it into a cloth roll; the transmission mechanism is mainly driven by a driving motor.

[0003] During the textile operation of a warp knitting machine, the situation of yarn breakage often occurs. Once this situation occurs, the driving motor must be immediately shut down, and the broken yarn must be replaced or connected to ensure the continuous stable operation of the warp knitting machine and avoid defects on the fabric surface. For this reason, existing warp knitting machines are equipped with a broken yarn detection device, which is a device that issues a stop signal to stop the warping machine when the warp yarn breaks, enabling workers to promptly discover and handle the broken end, effectively improving the fabric quality.

[0004] Due to the regular intermittent jitter of the edge yarn and the regular intermittent blockage of the mechanical structure, the space where the broken yarn detection device can be installed is very limited. The broken yarn detection device itself has a certain size, and interference will occur when multiple broken yarn detection devices are installed, and the situation of mis-touch leading to shutdown often occurs; in addition, the jitter range of the yarn will change with the changes of the yarn specifications, processes, and main shaft angles. When the jitter range is large to a certain extent, there is no effective detection interval between the two comb bars. Therefore, the existing broken yarn detection devices cannot adapt to all yarn specifications or processes. When the yarn specifications or processes change, it is necessary to readjust the position of the broken yarn detection device, and the operation is very cumbersome, and there is no installable detection position for some yarn specifications or processes. Since the highest comb bar is a monofilament comb bar and the yarn is relatively hard, compared with other comb bars, there will be no situation of edge yarn jitter, and there is an area that can always be free from the blockage of other yarns and mechanical structures. Therefore, traditional broken yarn detection devices usually only set the broken yarn detection device in this area of the highest comb bar, that is, only one broken yarn detection device can be installed, which can avoid the situation of mis-touch, but the sensitivity is much worse. Summary of the Invention

[0005] Therefore, it is necessary to provide a warp knitting machine anti-mis-touch yarn breakage detection and self-stop device and method with flexible installation to solve the problem that mis-touch may occur when multiple warp knitting machine yarn breakage detection devices are installed in the prior art, or even there is no space to install multiple warp knitting machine yarn breakage detection devices, so only one warp knitting machine yarn breakage detection device can be installed, resulting in low sensitivity.

[0006] To achieve the above object, the inventor provides a warp knitting machine anti-mis-touch yarn breakage detection and self-stop device with flexible installation, including:

[0007] A yarn breakage detection unit, the yarn breakage detection unit includes a detection module, and the detection module is arranged below the highest position of the yarn carried by the comb to be detected to detect whether the yarn carried by the comb to be detected is broken;

[0008] An angle detection unit, the angle detection unit is arranged at the main shaft of the warp knitting machine to detect the rotation angle of the main shaft of the warp knitting machine;

[0009] A control unit, the control unit pre-stores a mis-touch angle range, and is connected to the yarn breakage detection unit, the angle detection unit, and the warp knitting machine control system. After receiving the detection signal of the yarn breakage detection unit, it compares the rotation angle detected by the angle detection unit with the mis-touch angle range, and determines whether the detection signal of the yarn breakage detection unit is valid according to the comparison result, so as to determine whether to send a stop signal to the warp knitting machine control system; the mis-touch angle range is the rotation angle range of the main shaft of the warp knitting machine corresponding to the detection module being triggered under non-yarn-breakage conditions.

[0010] In some embodiments, the comb to be detected includes the highest comb and other combs located below the highest comb.

[0011] In some embodiments, all combs of the warp knitting machine are the combs to be detected; the number of the detection modules is the same as the number of the combs to be detected, so as to detect the yarn carried by all combs of the warp knitting machine one by one.

[0012] In some embodiments, the settable area of the detection module includes a first interval, a second interval, a third interval, and a fourth interval; the first interval is the movement interval of the yarn carried by the higher comb, the second interval is the movement interval of the yarn carried by the lower comb, the third interval is the movement interval of the lower comb, and the fourth interval is the remaining interval after subtracting the third interval from the interval between the first interval and the second interval; the higher comb is the comb to be detected, and the lower comb is the comb adjacent to the comb to be detected and located below the comb to be detected.

[0013] In some embodiments, the first interval includes a higher yarn movement interval and a downward jitter interval. The higher yarn movement interval is the movement interval of the yarn carried by the higher comb when the yarn is not jittering, and the downward jitter interval is the interval in which the yarn carried by the higher comb jitters downward; the second interval includes a lower yarn movement interval and an upward jitter interval. The lower yarn movement interval is the movement interval of the yarn carried by the lower comb when the yarn is not jittering, and the upward jitter interval is the interval in which the yarn carried by the lower comb jitters upward.

[0014] In some embodiments, the detection module is disposed within the first interval, the second interval, or the third interval.

[0015] In some embodiments, the detection module is a laser opposed device. The laser opposed device includes a laser emitter and a laser receiver. The laser emitter and the laser receiver are respectively disposed at the surfaces where the two ends of the comb are located and are arranged opposite to each other.

[0016] In some embodiments, the broken wire detection unit further includes an AD conversion module. The AD conversion module is connected to the detection module and the control unit to convert the detection signal of the detection module into a digital signal and then send it to the control unit.

[0017] In some embodiments, the angle detection unit includes an encoder. The encoder is disposed at the main shaft of the warp knitting machine and is connected to the control unit.

[0018] In some embodiments, it further includes:

[0019] An alarm unit. The alarm unit is connected to the control unit. When the control unit determines that the detection signal of the broken wire detection unit is valid, the control unit sends an alarm signal to the alarm unit, and the alarm unit issues an alarm.

[0020] Different from the prior art, the flexible installation warp knitting machine anti-mis-touch broken yarn detection and self-stop device described in the above technical solution realizes the detection of the rotation angle of the warp knitting machine main shaft by providing an angle detection unit at the main shaft of the warp knitting machine, providing a judgment object for the control unit to judge the validity of the detection signal of the detection module; the control unit pre-stores a mis-touch angle range, and the mis-touch angle range is the range of the rotation angle of the warp knitting machine main shaft corresponding to the detection module being triggered under non-broken yarn conditions, providing a judgment basis for the control unit to judge the validity of the detection signal of the detection module. After receiving the detection signal of the broken yarn detection unit, the control unit can judge whether the rotation angle of the warp knitting machine main shaft at this time falls within the mis-touch angle range by comparing the rotation angle detected by the angle detection unit with the mis-touch angle range, so as to determine whether the detection signal is a valid detection signal, realizing the filtering of mis-touch situations, enabling the position where the detection module can be set to be unrestricted, and can be set at a position that is only not blocked at a certain moment, greatly increasing the positions where the detection module can be set, providing conditions for installing multiple detection modules. Installing multiple detection modules will not result in shutdown due to mis-touch, ensuring the installation space of the detection module, and there is no need to readjust the installation position when the yarn specifications or processes change.

[0021] The inventor also provides a flexible installation warp knitting machine anti-mis-touch broken yarn detection and self-stop method, including the following steps:

[0022] The broken yarn detection unit continuously detects the yarn state and sends a detection signal to the control unit when triggered.

[0023] The control unit obtains the rotation angle of the warp knitting machine main shaft at this time and judges whether it is within the mis-touch angle range. The mis-touch angle range is the range of the rotation angle of the warp knitting machine main shaft corresponding to the broken yarn detection unit being triggered under non-broken yarn conditions.

[0024] If not, the control unit sends a shutdown signal to the warp knitting machine control system.

[0025] Different from the prior art, the flexible installation warp knitting machine anti-mis-touch broken yarn detection and self-stop method described in the above technical solution realizes the filtering of mis-touch situations, enabling the position where the detection module can be set to be unrestricted, and can be set at a position that is only not blocked at a certain moment, greatly increasing the positions where the detection module can be set, providing conditions for installing multiple detection modules. Installing multiple detection modules will not result in shutdown due to mis-touch, ensuring the installation space of the detection module, and there is no need to readjust the installation position when the yarn specifications or processes change.

[0026] The above description of the invention content is only an overview of the technical solution of this application. In order to enable those of ordinary skill in the art to more clearly understand the technical solution of this application, and then be able to implement it according to the content recorded in the description and the accompanying drawings, and in order to make the above objects, other objects, features, and advantages of this application more easily understood, the following will be described in conjunction with the specific embodiments of this application and the accompanying drawings. Brief Description of the Drawings

[0027] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of the specific embodiments of this application and other related contents, and should not be considered as a limitation to this application.

[0028] In the accompanying drawings of the specification:

[0029] Figure 1 It is a connection diagram of the anti-misoperation broken yarn detection and self-stop device of the warp knitting machine for flexible installation described in the specific embodiment;

[0030] Figure 2 It is an end view of the warp knitting machine described in the specific embodiment;

[0031] Figure 3 It is an end view of the warp knitting machine with multiple moments overlapping described in the specific embodiment;

[0032] Figure 4 It is an oblique view structure diagram of the warp knitting machine described in the specific embodiment;

[0033] Figure 5 It is a flowchart of the anti-misoperation broken yarn detection and self-stop method of the warp knitting machine for flexible installation described in the specific embodiment;

[0034] The description of the reference numerals involved in the above accompanying drawings is as follows:

[0035] 1. Yarn breakage detection unit;

[0036] 100. Detection module; 101. AD conversion module; 102. Installation bracket;

[0037] 2. Angle detection unit;

[0038] 3. Control unit;

[0039] 4. Warp knitting machine control system;

[0040] 5. Alarm unit;

[0041] 6. Guide bar;

[0042] 600. Yarn;

[0043] 7. Guide bar to be detected;

[0044] 8. Highest guide bar. Detailed implementation manners

[0045] To describe in detail the possible application scenarios, technical principles, specific implementable solutions, achievable purposes and effects of this application, etc., the following will be described in detail with reference to the specific examples listed and in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of this application, so they are only examples and cannot be used to limit the protection scope of this application.

[0046] Referring to "embodiment" in this article means that the specific features, structures or characteristics described in connection with the embodiment may be included in at least one embodiment of this application. The term "embodiment" that appears in various positions in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in this application, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0047] Unless otherwise defined, the meanings of the technical terms used in this article are the same as those generally understood by those skilled in the technical field to which this application belongs; the use of relevant terms in this article is only to describe specific embodiments and is not intended to limit this application.

[0048] In the description of this application, the phrase "and / or" is an expression used to describe the logical relationship between objects, indicating that there can be three relationships. For example, A and / or B means: there is A, there is B, and there is both A and B at the same time. In addition, the character " / " in this article generally represents an "or" logical relationship between the associated objects before and after.

[0049] In this application, 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 quantity, primary or secondary, or order relationship between these entities or operations.

[0050] Without more limitations, in this application, the expressions such as "including", "comprising", "having" or other similar expressions used in the statement are intended to cover non-exclusive inclusion. These expressions do not exclude that there may be other elements in the process, method or product including the said elements, so that the process, method or product including a series of elements may not only include those defined elements, but also include other elements not explicitly listed, or also include elements inherent to this process, method or product.

[0051] Similar to the understanding in the "Examination Guidelines", in this application, expressions such as "greater than", "less than", "exceeding", etc. are understood as not including the number itself; expressions such as "above", "below", "within", etc. are understood as including the number itself. In addition, in the description of the embodiments of this application, the meaning of "a plurality of" is two or more (including two), and similar expressions related to "many", such as "multiple groups", "multiple times", etc., are understood in this way, unless otherwise clearly and specifically defined.

[0052] In the description of the embodiments of this application, the spatially related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the specific embodiment or the drawing, and is only for the convenience of describing the specific embodiments of this application or for the reader to understand, rather than indicating or implying that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, so it cannot be understood as a limitation to the embodiments of this application.

[0053] Unless otherwise clearly specified or limited, in the description of the embodiments of this application, the terms "installed", "connected", "joined", "fixed", "set", etc. should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two components or the interaction relationship between two components. For those skilled in the art to which this application belongs, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

[0054] When the warp knitting machine is performing textile operations, the situation of yarn breakage often occurs. Once this situation occurs, the driving motor must be immediately shut down, and the broken yarn must be replaced or connected to ensure the continuous stable operation of the warp knitting machine and avoid defects on the fabric surface. For this reason, the existing warp knitting machines are equipped with a yarn breakage detection device, which is a device that issues a stop signal to stop the warping machine when a warp break occurs, enabling the worker to promptly discover and handle the breakage, effectively improving the fabric quality.

[0055] Due to the regular intermittent jitter of the edge yarn and the regular intermittent blockage of the mechanical structure, the space available for installing the broken yarn detection device is very limited. The broken yarn detection device itself has a certain size, and interference will occur when multiple broken yarn detection devices are installed, often resulting in false touches and machine stops. In addition, the jitter range of the yarn will change with the changes in yarn specifications, processes, and the spindle angle. When the jitter range reaches a certain level, there is no effective detection interval between the two guide bars. Therefore, the existing broken yarn detection devices cannot adapt to all yarn specifications or processes. When the yarn specifications or processes change, the position of the broken yarn detection device needs to be readjusted, which is very cumbersome, and there is no installable detection position for some yarn specifications or processes. Since the highest guide bar is a monofilament guide bar and the yarn is relatively stiff, compared with other guide bars, there will be no jitter of the edge yarn, and there is an area that can remain unblocked by other yarns and mechanical structures. Therefore, traditional broken yarn detection devices usually only set the broken yarn detection device in this area of the highest guide bar, that is, only one broken yarn detection device can be installed, which can avoid false touches, but the sensitivity is much worse.

[0056] For this reason, the present invention provides a warp knitting machine anti-false-touch broken yarn detection and self-stop device with flexible installation, which is used to detect whether the yarn of the warp knitting machine is broken and send a stop signal to the warp knitting machine control system 4 when the yarn is broken, so that the warp knitting machine control system 4 performs stop control. In particular, the setting position of the detection module 100 for detecting the yarn can be unrestricted, so that there are more positions where the detection module 100 can be set, avoiding false-touch stops, and ensuring the detection accuracy, providing conditions for setting multiple detection modules 100 to improve the detection sensitivity.

[0057] Please refer to Figure 1 and Figure 2 In a specific embodiment, the warp knitting machine anti-false-touch broken yarn detection and self-stop device with flexible installation includes a broken yarn detection unit 1, an angle detection unit 2, and a control unit 3. The broken yarn detection unit 1 is used to detect whether the yarn 600 carried by the to-be-detected guide bar 7 is broken; the angle detection unit 2 is used to detect the rotation angle of the warp knitting machine spindle; the control unit 3 is used to judge whether the detection signal of the broken yarn detection unit 1 is valid according to the rotation angle of the warp knitting machine spindle detected by the angle detection unit 2 and make corresponding control signals.

[0058] The broken yarn detection unit 1 includes a detection module 100. The part in the broken yarn detection unit 1 for detecting whether the yarn 600 carried by the to-be-detected guide bar 7 is broken is the detection module 100. The detection module 100 is arranged below the highest position of the yarn 600 carried by the to-be-detected guide bar 7, such as Figure 3At the initial position of the yarn 600 carried by the right half comb bar shown, in case the yarn 600 breaks, it can fall to trigger the detection module 100, and the detection module 100 is arranged above the lowest position of the yarn 600 carried by the comb bar under the comb bar 7 to be detected, that is, the detection module 100 is located in the area between the two comb bars and the area between the yarns 600 carried by the two comb bars.

[0059] The angle detection unit 2 is arranged at the main shaft of the warp knitting machine.

[0060] The control unit 3 pre-stores a false trigger angle range and is connected to the breakage detection unit 1, the angle detection unit 2, and the warp knitting machine control system 4. After receiving the detection signal of the breakage detection unit 1, it compares the rotation angle detected by the angle detection unit 2 with the false trigger angle range, and determines whether the detection signal of the breakage detection unit 1 is valid according to the comparison result, so as to determine whether to send a stop signal to the warp knitting machine control system 4; the false trigger angle range is the range of the rotation angle of the main shaft of the warp knitting machine corresponding to the trigger of the detection module 100 under non-breakage conditions.

[0061] By arranging the angle detection unit 2 at the main shaft of the warp knitting machine, the detection of the rotation angle of the main shaft of the warp knitting machine is realized, providing a judgment object for the control unit 3 to judge the validity of the detection signal of the detection module 100; the control unit 3 pre-stores a false trigger angle range, and the false trigger angle range is the range of the rotation angle of the main shaft of the warp knitting machine corresponding to the trigger of the detection module 100 under non-breakage conditions, providing a judgment basis for the control unit 3 to judge the validity of the detection signal of the detection module 100. After receiving the detection signal of the breakage detection unit 1, the control unit 3 can judge whether the rotation angle of the main shaft of the warp knitting machine at this time falls within the false trigger angle range by comparing the rotation angle detected by the angle detection unit 2 with the false trigger angle range, so as to determine whether the detection signal is a valid detection signal, realizing the filtering of false trigger situations, enabling the position where the detection module 100 can be set to be unrestricted, and can be set at a position that is only not blocked at a certain moment, greatly increasing the positions where the detection module 100 can be set, providing conditions for installing multiple detection modules 100. Installing multiple detection modules 100 will not cause the situation of stopping due to false trigger, ensuring the installation space of the detection module 100, and there is no need to readjust the installation position when the yarn 600 specifications or processes change.

[0062] When the control unit 3 receives the detection signal from the detection module 100, it is determined that if the rotation angle of the main shaft of the warp knitting machine falls within the mis-touch angle range at this time, it indicates that the yarn 600 is moving normally, jittering, or the mechanical structure has mis-touched the detection module 100 at this time. At this time, the detection signal of the yarn break detection unit 1 is invalid and no stop signal is sent to the warp knitting machine control system 4; if the rotation angle of the main shaft of the warp knitting machine does not fall within the mis-touch angle range at this time, it indicates that the broken yarn has triggered the detection module 100 at this time. At this time, the detection signal of the yarn break detection unit 1 is valid and a stop signal should be sent to the warp knitting machine control system 4.

[0063] Due to the provision of the angle detection unit 2 and the control unit 3, therefore, the detection module 100 can be arranged within the movement range of the yarn 600 carried by the comb to be detected 7, or can be arranged within the movement range of the yarn 600 carried by the comb below the comb to be detected 7, or can be arranged within the movement range of the comb below the comb to be detected 7. As long as the mis-touch angle range corresponding to the area where the detection module 100 is located is pre-stored in the control unit 3, so that the control unit 3 can filter out the detection signal sent by the detection module 100 within this mis-touch angle range, the situation of mis-touch shutdown can be avoided. Therefore, it can be used to detect the yarn 600 carried by the highest comb 8, or can be used to detect the yarn 600 carried by other combs below the highest comb 8. That is, in some embodiments, the comb to be detected 7 includes the highest comb 8 and other combs below the highest comb 8.

[0064] The number of detection modules 100 can be selected according to actual needs. For example, at least two detection modules 100 are provided to detect the yarn 600 carried by at least two combs of the warp knitting machine one by one. In order to improve the detection sensitivity, in some embodiments, all combs 6 of the warp knitting machine are the combs to be detected 7; the number of detection modules 100 is the same as the number of combs to be detected 7 to detect the yarn 600 carried by all combs 6 of the warp knitting machine one by one.

[0065] Compared with the existing setting positions, the setting position of the detection module 100 is more unrestricted. Therefore, in some embodiments, the available setting areas of the detection module 100 include a first area, a second area, a third area, and a fourth area; the first area is the movement range of the yarn 600 carried by the higher comb (such as Figure 3 the A area shown), the second area is the movement range of the yarn 600 carried by the lower comb (such as Figure 3 the C area shown), the third area is the movement range of the lower comb (such as Figure 3 the D area shown), and the fourth area is the remaining area obtained by subtracting the third area from the area between the first area and the second area (such as Figure 3 the B area shown); please refer toFigure 3 The higher comb is the comb 7 to be detected, and the lower comb is the comb adjacent to and below the comb 7 to be detected.

[0066] If the detection module 100 is set within the first interval, the false touch angle range is the rotation angle range of the main shaft of the warp knitting machine corresponding to the first interval; if the detection module 100 is set within the second interval, the false touch angle range is the rotation angle range of the main shaft of the warp knitting machine corresponding to the second interval; if the detection module 100 is set within the third interval, the false touch angle range is the rotation angle range of the main shaft of the warp knitting machine corresponding to the third interval; if the detection module 100 is set within the fourth interval, the false touch angle range is the rotation angle range of the main shaft of the warp knitting machine corresponding to the fourth interval.

[0067] In the prior art, the detection device can only be set within the fourth interval. Under different specifications of the yarn 600 or processes, the fourth interval may not exist. Therefore, there is no installable position for the existing detection device, while in the present application, there is still an installable position when the fourth interval does not exist. That is, in some embodiments, the detection module 100 can be selected to be set within the first interval, the second interval or the third interval.

[0068] To avoid the setting of the detection module 100 from blocking the movement of the yarn 600, in some embodiments, the first interval includes a higher yarn 600 movement interval and a lower jitter interval. The higher yarn 600 movement interval is the movement interval of the yarn 600 carried by the higher comb when it is not jittering, that is, the original normal movement interval, and the lower jitter interval is the interval where the yarn 600 carried by the higher comb jitters downward. Figure 3 The dotted area shown is the yarn 600 jitter area. If the comb 7 to be detected is the highest comb 8, and the highest comb 8 is a monofilament comb and the yarn 600 is relatively hard and there will be no side yarn jitter, so there is no yarn 600 jitter area for the highest comb 8. As Figure 3 shown, there is no dotted area for the yarn 600 carried by the highest comb 8, that is, there is no lower jitter interval for the highest comb 8; the second interval includes a lower yarn 600 movement interval and an upper jitter interval. The lower yarn 600 movement interval is the movement interval of the yarn 600 carried by the lower comb when it is not jittering, and the upper jitter interval is the interval where the yarn 600 carried by the lower comb jitters upward.

[0069] When the detection module 100 is disposed in the first interval, in a preferred embodiment, it is only disposed in the lower jitter interval of the first interval. Such a setting makes the setting of the detection module 100 not block the normal space of the yarn, that is, it does not block the higher yarn movement interval. When the detection module 100 is disposed in the second interval, in a preferred embodiment, it is only disposed in the upper jitter interval of the second interval. Such a setting makes the setting of the detection module 100 not block the normal space of the yarn, that is, it does not block the lower yarn movement interval.

[0070] If the detection module 100 is disposed in the second interval, the third interval and the fourth interval, it is possible to avoid filtering out the situation where the yarn carried by the comb 7 to be detected breaks in its own movement interval (i.e., the first interval). In this way, false touches can be completely avoided, and more broken wire situations can be detected, which is beneficial to improving the detection accuracy.

[0071] In some embodiments, the detection module 100 is a laser opposed device, which has higher sensitivity, strong anti-interference ability and simple structure. The laser opposed device includes a laser emitter and a laser receiver. The laser emitter and the laser receiver are respectively disposed at the surfaces where the two ends of the comb are located and are arranged oppositely. When the laser emitter is blocked, the laser receiver cannot receive the laser light emitted by the laser emitter, and then the detection module 100 sends a detection signal to the control unit 3. The laser opposed device has a smaller volume and is more convenient for installation.

[0072] In some embodiments, it further includes a mounting bracket 102. The mounting bracket 102 is disposed at the two end faces of the comb, and the detection module 100 is disposed at the mounting bracket 102. If the detection module is a laser opposed device, please refer to Figure 4 ., then there are four mounting brackets 102. The four mounting brackets 102 are arranged in pairs oppositely. Two mounting brackets 102 are disposed at one end face of the comb and are respectively located on both sides of the rotating shaft; the other two mounting brackets 102 are disposed at the other end face of the comb and are respectively located on both sides of the rotating shaft; the laser emitter and the laser receiver are respectively horizontally and fixed to the two oppositely arranged mounting brackets 102 by bolts.

[0073] The mounting bracket 102 may further be provided with an adjustable structure, so as to facilitate the adjustment of the position of the detection module 100.

[0074] In some embodiments, the angle detection unit 2 includes an encoder. The encoder is disposed at the main shaft of the warp knitting machine and is connected to the control unit 3. By connecting the encoder to the main shaft of the warp knitting machine, the angle of the main shaft of the warp knitting machine is measured and input into the control unit 3 to collect the rotation angles of the main shaft of the warp knitting machine corresponding to the above-mentioned respective intervals.

[0075] In some embodiments, the broken yarn detection unit 1 further includes an AD conversion module 101, which is connected to the detection module 100 and the control unit 3 to convert the detection signal of the detection module 100 into a digital signal and send it to the control unit 3. If it is necessary to detect the yarns carried by eight guide bars, the AD conversion module 101 is an eight-channel AD conversion module, which supports dynamic detection of eight detection modules 100, such as dynamic detection of eight laser pairs, perfectly enabling the eight laser pairs to work on the same warp knitting machine without interference.

[0076] In some embodiments, an alarm unit 5 is further included. The alarm unit 5 is connected to the control unit 3. When it is determined that the detection signal of the broken yarn detection unit 1 is valid, the control unit 3 sends an alarm signal to the alarm unit 5, and the alarm unit 5 issues an alarm to prompt the operator that a broken yarn situation needs to be handled, so as to handle the broken yarn problem in time and resume normal knitting operation as soon as possible.

[0077] Please refer to Figure 5 , the present invention also provides a flexible installation warp knitting machine anti-mis-touch broken yarn detection and self-stop method, including the following steps:

[0078] S501 The broken yarn detection unit continuously detects the yarn state and sends a detection signal to the control unit 3 when triggered.

[0079] S502 The control unit 3 obtains the rotation angle of the main shaft of the warp knitting machine at this time and determines whether it is within the mis-touch angle range. The mis-touch angle range is the range of the rotation angle of the main shaft of the warp knitting machine corresponding to the broken yarn detection unit being triggered under non-broken yarn conditions.

[0080] S503 If not, the control unit 3 sends a stop signal to the warp knitting machine control system 4.

[0081] In step S502, it is the encoder that detects the angle value of the main shaft of the warp knitting machine at this time and sends it to the control unit 3 so that the control unit 3 can obtain the angle value of the main shaft of the warp knitting machine at this time.

[0082] The above flexible installation warp knitting machine anti-mis-touch broken yarn detection and self-stop method can be applied to the above flexible installation warp knitting machine anti-mis-touch broken yarn detection and self-stop device.

[0083] Finally, it should be noted that although the above embodiments have been described in the text and drawings of the specification of the present application, the patent protection scope of the present application cannot be limited thereby. Any technical solution obtained by equivalent structure or equivalent process substitution or modification based on the essential concept of the present application and using the content recorded in the text and drawings of the specification of the present application, as well as any technical solution directly or indirectly implementing the above embodiments in other related technical fields, etc., are all included in the patent protection scope of the present application.

Claims

1. A warp knitting machine anti-mis-touch broken yarn detection and self-stop device with flexible installation, characterized in that, Comprising: A broken yarn detection unit, the broken yarn detection unit includes a detection module, and the detection module is disposed below the highest position of the yarn carried by the comb to be detected, so as to detect whether the yarn carried by the comb to be detected is broken; An angle detection unit, the angle detection unit is disposed at the main shaft of the warp knitting machine to detect the rotation angle of the main shaft of the warp knitting machine; A control unit, the control unit pre-stores a mis-touch angle range, and is connected to the broken yarn detection unit, the angle detection unit, and the warp knitting machine control system. After receiving the detection signal from the broken yarn detection unit, it is used to compare the rotation angle detected by the angle detection unit with the mis-touch angle range, and determine whether the detection signal of the broken yarn detection unit is valid according to the comparison result, so as to determine whether to send a stop signal to the warp knitting machine control system; the mis-touch angle range is the rotation angle range of the main shaft of the warp knitting machine corresponding to the detection module being triggered under non-broken yarn conditions.

2. The warp knitting machine anti-mis-touch broken yarn detection and self-stop device with flexible installation according to claim 1, characterized in that, The comb to be detected includes the highest comb and other combs located below the highest comb.

3. The warp knitting machine anti-mis-touch broken yarn detection and self-stop device with flexible installation according to claim 1, characterized in that, All combs of the warp knitting machine are the combs to be detected; the number of the detection modules is the same as the number of the combs to be detected, so as to detect the yarns carried by all combs of the warp knitting machine one by one.

4. The warp knitting machine anti-mis-touch broken yarn detection and self-stop device with flexible installation according to claim 1, characterized in that, The settable area of the detection module includes a first interval, a second interval, a third interval and a fourth interval; the first interval is the movement interval of the yarn carried by the higher comb, the second interval is the movement interval of the yarn carried by the lower comb, the third interval is the movement interval of the lower comb, and the fourth interval is the remaining interval obtained by subtracting the third interval from the interval between the first interval and the second interval; the higher comb is the comb to be detected, and the lower comb is the comb adjacent to and below the comb to be detected.

5. The warp knitting machine anti-mis-touch broken yarn detection and self-stop device with flexible installation according to claim 4, characterized in that, The first interval includes a higher yarn movement interval and a downward jitter interval, the higher yarn movement interval is the movement interval of the yarn carried by the higher comb when it is not jittering, and the downward jitter interval is the interval when the yarn carried by the higher comb jitters downward; the second interval includes a lower yarn movement interval and an upward jitter interval, the lower yarn movement interval is the movement interval of the yarn carried by the lower comb when it is not jittering, and the upward jitter interval is the interval when the yarn carried by the lower comb jitters upward.

6. The warp knitting machine anti-mis-touch broken yarn detection and self-stop device with flexible installation according to claim 4, characterized in that, The detection module is disposed in the first interval, the second interval or the third interval.

7. The warp knitting machine anti-mis-touch broken yarn detection and self-stop device with flexible installation according to claim 1, characterized in that, The detection module is a laser opposed device, the laser opposed device includes a laser emitter and a laser receiver, the laser emitter and the laser receiver are respectively disposed at the surfaces where the two ends of the comb are located, and are disposed opposite to each other.

8. The warp knitting machine anti-mis-touch broken yarn detection and self-stop device with flexible installation according to claim 1, characterized in that, The broken yarn detection unit further includes an AD conversion module, and the AD conversion module is connected to the detection module and the control unit to convert the detection signal of the detection module into a digital signal and then send it to the control unit.

9. The warp knitting machine anti-mis-touch broken yarn detection and self-stop device with flexible installation according to claim 1, characterized in that, The angle detection unit includes an encoder, the encoder is disposed at the main shaft of the warp knitting machine and is connected to the control unit.

10. A warp knitting machine anti-mis-touch broken yarn detection and self-stop method, characterized in that, Using the flexible installation warp knitting machine anti-mis-touch broken yarn detection and self-stop device according to any one of claims 1-9, including the following steps: The broken yarn detection unit detects the yarn state in real time, and when triggered, sends a detection signal to the control unit; The control unit obtains the current rotation angle of the main shaft of the warp knitting machine and determines whether it is within the mis-touch angle range, where the mis-touch angle range is the range of the rotation angle of the main shaft of the warp knitting machine corresponding to the triggering of the yarn breakage detection unit under non-yarn-breakage conditions; If not, the control unit sends a stop signal to the control system of the warp knitting machine.

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