Knitting machine needle breaking head detection alarm and stop device

Abstract

The utility model relates to a kind of knitting needle broken needle head detection alarm self-stopping device of knitting machine, comprising: detection device, for when the needle cylinder of knitting machine rotates, non-contactly in turn detects the needle head of all knitting needles on needle cylinder, and generates a detection pulse signal for each needle head passing in front of it;Controller is connected with detection device communication, controller receives detection pulse signal, and determines the interval distance between two adjacent detection pulse signals, when interval distance exceeds preset distance threshold, controller generates stop command to control knitting machine to stop running.The knitting needle broken needle head detection alarm self-stopping device of knitting machine provided by the utility model is lower in scrap rate, since it can timely, accurately find and distinguish broken needle head and missing needle these two key faults and immediately stop, fundamentally eliminates the continuity waste production caused by these two faults, significantly improves product qualification rate.

Description

Technical Field

[0001] This utility model belongs to the field of knitting machine technology, and specifically relates to a knitting machine needle breakage detection alarm and automatic stop device. Background Technology

[0002] During high-speed knitting, the integrity of the knitting needles is crucial to product quality. Current knitting machines have alarm and automatic stop functions for broken needle feet, broken needle latches, and damaged needle latches. However, they fail to alarm and stop automatically when encountering broken needle heads or missing needles. This results in the continuous production of fabrics with serious defects, causing significant waste. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a knitting machine needle breakage detection alarm and automatic stop device to address the shortcomings of the existing technology and solve the above-mentioned technical problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A knitting machine needle breakage detection alarm and automatic stop device includes: A detection device is used to non-contactly and sequentially detect the needle tips of all the needles on the cylinder of a knitting machine as the cylinder rotates, and to generate a detection pulse signal for each needle that passes in front of it. The controller is connected in communication with the detection device. The controller receives the detection pulse signal and determines the interval between two adjacent detection pulse signals. When the interval exceeds the preset distance threshold, the controller generates a stop command to control the knitting machine to stop running.

[0005] To better realize this utility model, the above structure is further optimized by including a fixed mounting base, on which the detection device is mounted.

[0006] To better realize this utility model, the above structure is further optimized, and the detection device is connected to the controller via a signal line.

[0007] To better realize this utility model, the above structure is further optimized, and the detection device is a photoelectric sensor, a magnetic induction sensor, an image sensor or a metal sensor.

[0008] To better realize this utility model, the above structure is further optimized, and the interval distance is equal to the rotation speed of the syringe × the time between two adjacent detection pulse signals.

[0009] To better realize this utility model, the above structure is further optimized so that the sensing surface of the detection device faces the needle.

[0010] Compared with the prior art, this utility model has the following advantages: The knitting machine needle breakage detection alarm and automatic stop device provided by this utility model has a lower scrap rate. Because it can detect and distinguish the two key faults of broken needles and missing needles in a timely and accurate manner and stop the machine immediately, it fundamentally eliminates the continuous scrap caused by these two faults and significantly improves the product qualification rate. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram illustrating the application of this utility model; Figure 2 yes Figure 1 A magnified schematic diagram of the structure of part A in the diagram; Figure 3 This is a schematic diagram of the structure of the knitting needle in this utility model; Figure 4 This is a schematic diagram of the structure of this utility model.

[0013] In the picture: 1-Detection device, 101-Sensing surface, 2-Needle cylinder, 3-Knitting needle, 301-Needle tip, 4-Controller, 5-Fixed mounting base, 6-Signal line. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0015] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0017] Please refer to Figures 1-4 The present invention provides a knitting machine needle breakage detection alarm and automatic stop device, comprising a detection device 1, a controller 4, and a fixed mounting base 5. The structure of the knitting needle 3 is as follows: Figure 3 As shown.

[0018] The detection device 1 is used to non-contactly and sequentially detect the needle tips 301 of all the needles 3 on the needle cylinder 2 as the needle cylinder 2 rotates. The sensing surface 101 of the detection device 1 faces the needle tip 301 and generates a detection pulse signal for each needle tip 301 that passes in front of it. The mounting base 5 is installed on the outside of the needle cylinder 2 to provide support for the detection device 1 and to securely fix the detection device 1 to the opposite side of the needle cylinder 2. The detection device 1 can be a photoelectric sensor, a magnetic induction sensor, an image sensor, or a metal sensor.

[0019] Controller 4, also known as the knitting machine's computer control box, controls the start and stop of the knitting machine. Controller 4 communicates with the detection device 1 via signal line 6. Controller 4 receives the detection pulse signals sent by the detection device 1 and determines the interval between two adjacent detection pulse signals. The interval distance = the rotational speed of the needle cylinder 2 × the time between two adjacent detection pulse signals. If the interval distance is the same as the preset distance, it proves that the positions of the two adjacent needles 301 are normal. When the interval distance exceeds the preset distance threshold, it means that there is a missing needle 301 in the middle, that is, the needle 301 is broken or the entire needle 3 is missing, which will cause the detected distance to increase and exceed the set distance range. In either case, it is a manifestation of a malfunction of the needle 3 at this point, which can be detected by the detection device 1 and quickly judged. Controller 4 generates a stop command to control the knitting machine to stop running.

[0020] At work, such as Figure 1 As shown, the cylinder 2 rotates counterclockwise at this time, and the knitting needles 3 at the top of the cylinder 2 rotate in a circle along with it, and pass in front of the detection device 1 in sequence. The detection device 1 obtains the detection pulse signal when the needle tip 301 of each knitting needle 3 passes by, and sends the signal to the controller 4. The controller 4 processes the signal, obtains the interval distance between two adjacent detection pulse signals, and compares it with the preset distance threshold. When the interval distance exceeds the preset distance threshold, the controller 4 generates a stop command to control the knitting machine to stop running.

[0021] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A knitting machine needle breakage detection alarm and automatic stop device, characterized in that, include: A detection device is used to non-contactly and sequentially detect the needle tips of all the needles on the cylinder of a knitting machine as the cylinder rotates, and to generate a detection pulse signal for each needle tip that passes in front of it. The controller is communicatively connected to the detection device. The controller receives the detection pulse signal and determines the interval between two adjacent detection pulse signals. When the interval exceeds a preset distance threshold, the controller generates a stop command to control the knitting machine to stop running.

2. The knitting machine needle breakage detection alarm and automatic stop device according to claim 1, characterized in that: It also includes a fixed mounting base, on which the detection device is mounted.

3. The knitting machine needle breakage detection alarm and automatic stop device according to claim 2, characterized in that: The detection device is connected to the controller via a signal line.

4. The knitting machine needle breakage detection alarm and automatic stop device according to claim 3, characterized in that: The detection device is a photoelectric sensor, a magnetic induction sensor, an image sensor, or a metal sensor.

5. The knitting machine needle breakage detection alarm and automatic stop device according to claim 1, characterized in that: The interval distance = the rotational speed of the syringe × the time between two adjacent detection pulse signals.

6. The knitting machine needle breakage detection alarm and automatic stop device according to claim 1, characterized in that: The sensing surface of the detection device is directly opposite the needle tip.

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