Control system of knitting height monitoring device in needle disc of circular weft knitting machine

Abstract

The utility model relates to a control system of a knitting height monitoring device in a needle disc of a circular weft knitting machine, which comprises a base of the circular weft knitting machine, a needle disc I driven by a motor I to rotate on the base, an upper disc arranged on the base and provided with a triangle, a monitoring piece arranged on the base, and a control piece, the control part comprises a PLC control panel, an output module and an independent starting module. The monitoring part monitors the fluctuating height of the knitting needle and transmits the fluctuating height to the PLC control panel which is in communication connection with the monitoring part and can preset the fluctuating value of the knitting needle, the PLC control panel compares the preset numerical value with the monitoring numerical value, and the situation that when a worker opens a small error or leaves a post, the worker enables the needle dial to drive the knitting needle to conduct knitting through the first motor can be effectively avoided; therefore, waste of knitting threads can be reduced, defects caused by fluctuation and change of the height of a knitting needle during knitting of the knitted fabric are reduced, and the quality of the knitted fabric finished product is improved.

Description

[Technical field]

[0001] The utility model relates to the technical field of a control system for a knitting needle monitoring device, in particular to a control system for a knitting height monitoring device in a needle disk of a weft knitting circular machine. [Background technology]

[0002] Weft knitting circular machine, the "needle bed" is a cylindrical or disc-shaped weft knitting machine, the knitting needles are inserted on the needle cylinder or "needle disc" for knitting, the knitting needles used are "latch needles", "hook needles" and "compound needles", and the control system of the knitting needle height monitoring device, as the name implies, is a component for controlling the monitoring device. By controlling the monitoring device with the control system, it is convenient for personnel to check the height of the knitting needles. The control system is mainly composed of a displacement sensor and a control panel. The displacement sensor is electrically connected to the control panel, and the displacement sensor is used to sense the height of the knitting needles and transmit it to the control panel. The control panel displays the height of the knitting needles, so that it can be understood whether the height difference of the knitting needles will change during the knitting process;

[0003] Although this method can be used to observe whether the height difference of the knitting needles deviates, when the height difference of the knitting needles deviates, the personnel need to stop the machine to adjust the corresponding triangle plate in order to adjust the height of the knitting needles. When the circular knitting machine is running, the personnel may not always look at the control panel and may be absent or leave their posts. Once the personnel are absent or absent and there is a height deviation of the knitting needles, the needle disc will still weave the fabric and the machine cannot be stopped in time, which will lead to a decrease in the quality of the finished knitted product and a waste of knitting thread. [Utility Model Content]

[0004] The utility model aims to solve the problems in the prior art and provides a control system for a knitting height monitoring device in a needle disk of a weft knitting circular machine, which can control the needle disk.

[0005] To achieve the above-mentioned purpose, the utility model proposes a control system for a knitting height monitoring device in a needle disk of a weft knitting circular machine, comprising a base of the weft knitting circular machine, a needle disk 1 driven by a motor 1 to rotate on the base, an upper disk with a triangle arranged on the base, and a monitoring component arranged on the base, wherein the butts of the knitting needles on the needle disk 1 are located in the slide groove of the triangle so that the triangle drives the knitting needles to rise and fall, and the monitoring component can monitor the rise and fall of the knitting needles.

[0006] Also includes: controls;

[0007] The control components include: a PLC control panel, an output module and a separate opening module;

[0008] The monitoring component monitors the knitting needle fluctuation height and transmits it to the PLC control panel which is in communication connection with it and can preset the knitting needle fluctuation value. The PLC control panel compares the preset value with the monitoring value and controls the output module which is in communication connection with it to control the operation of the motor which is in control connection with the output module.

[0009] The separate start module is connected to the PLC control panel for communication and enables the PLC control panel to start motor one.

[0010] Preferably, the output module is a motor driver, which is electrically connected to motor 1, and the motor 1 driver is also electrically connected to the PLC control panel.

[0011] Preferably, the separate start module is a push-button start switch, which is electrically connected to the PLC control panel.

[0012] Preferably, the monitoring component includes a displacement sensor, which is communicatively connected to the PLC control panel, and the sensing end in the displacement sensor is connected to the knitting needle.

[0013] Preferably, the displacement sensor is a drawstring displacement sensor, the internal drawstring of which is fixedly connected to the bottom of the knitting needle.

[0014] Preferably, one side of the PLC control panel is communicatively connected with a pulse module.

[0015] Preferably, the pulse module is a handwheel pulser, which is electrically connected to the PLC control panel.

[0016] The beneficial effects of the utility model are as follows: compared with the prior art, the utility model uses a monitoring component to transmit a signal to a PLC control panel, and the PLC control panel compares the high and low fluctuations preset inside it with the monitoring component signal. When an error occurs in the signal comparison, the PLC control panel transmits a signal to the output module, and the output module turns off the motor one. At this time, the personnel can adjust the triangle. When the triangle adjustment is completed, the personnel can operate the separate opening module, and use the separate opening module to transmit a signal to the PLC control panel, and the PLC control panel transmits a signal to the output module to make the motor one run. Similarly, if there is still a height deviation in the fluctuation height of the knitting needles, the PLC control panel will turn off the motor one, and the personnel can adjust the triangle as needed. When there is no deviation, the PLC control panel continues to run, which can effectively avoid the situation where the motor one personnel drives the needle disk to drive the knitting needles to weave when the personnel are absent or leave their posts, thereby reducing the waste of knitting thread, thereby reducing the defects caused by the change of the height fluctuation of the knitting needles when weaving the knitted fabric, and thus improving the quality of the finished knitted fabric.

[0017] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the position of the displacement sensor and the motor 1 of the utility model;

[0020] Figure 3 It is a schematic diagram of the signal transmission direction of the utility model.

[0021] In the figure: 1. Base; 2. Motor 1; 3. Needle disk 1; 4. Upper disk; 5. Triangle; 6. Monitoring component; 7. PLC control panel; 8. Output module; 9. Individual start module; 10. Pulse module; 11. Displacement sensor; 12. Pulley 1; 13. Pulley 2. [Specific implementation method]

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0024] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] See also Figures 1 to 3 , the control system provided by the utility model is now described. The control system includes a base 1, a needle disk 3, an upper disk 4 and a monitoring component 6 of a weft knitting circular machine, wherein the upper disk 4 is arranged on the base 1, and the upper disk 4 has a triangle 5, which is mainly used to drive the knitting needles in the needle disk 3 to rise and fall, and the needle disk 3 is driven by a motor 2 to rotate and connect to the base 1, and the driving mode of the motor 2 is a pulley driving mode, wherein a pulley 1 and a pulley 2 are arranged on the base 1, and the pulley 1 and the pulley 2 are both rotatably connected to the base 1, and the output shaft of the motor 2 is fixedly connected to the pulley 1, and the pulley 2 is fixedly connected to the needle disk 3, and the pulley 1 and the pulley 2 are connected by a belt, so that the rotation of the needle disk 3 can be realized, and the rotation of the needle disk 3 is mainly used to drive the needle butts of the knitting needles connected to the needle disk 3 to slide in the triangle 5, and the monitoring component 6 is arranged on the base 1, and the monitoring component 6 is connected to the knitting needles and can monitor the height of the knitting needles.

[0027] The base 1 is provided with a control component, which includes a PLC control panel 7, an output module 8 and a separate opening module 9, wherein the monitoring component 6 monitors the height fluctuation of the knitting needle and transmits a signal to the PLC control panel 7 which is connected to the communication and can be preset with the knitting needle fluctuation value, and the PLC control surface is used to compare the preset value of the PLC control surface with the monitoring value. When the monitoring value exceeds the preset value, the PLC control panel 7 controls the output module 8 connected to the communication to control the motor connected to the output module 8 to turn off. At this time, the personnel can adjust the cam 5 to the required position, which is convenient for the personnel to adjust the knitting needle fluctuation height. After the height adjustment of the cam 5 is completed, the personnel can operate the separate opening module 9, use the separate opening module 9 to communicate with the PLC control panel 7, and enable the PLC control panel 7 to start the motor 2, so as to realize the operation of the motor 2. When the motor 2 drives the needle plate 3 to rotate, when the cam 5 is still not adjusted, the PLC control panel 7 will still control the motor 2 to stop running.

[0028] Specifically, the output module 8 is a motor driver, which is electrically connected to the motor 2 and can perform fine control on the motor 2. At the same time, it can also automatically adjust the voltage and current of the motor 2 according to the load condition of the motor 2, thereby improving the efficiency and life of the motor 2.

[0029] Specifically, the separate opening module 9 is set as a push-button start switch, and the push-button switch is electrically connected to the PLC control panel 7 to facilitate operation by personnel.

[0030] Specifically, the monitoring component 6 includes a displacement sensor 11, which is communicatively connected to the PLC control panel 7, and the sensing end in the displacement sensor 11 is connected to the knitting needle. The displacement sensor 11 is mainly used to monitor the fluctuation of the knitting needle.

[0031] Specifically, the displacement sensor 11 is a drawstring displacement sensor 11, the internal drawstring of which is fixedly connected to the bottom of the knitting needle. The drawstring displacement sensor 11 has good stability, long service life and high resolution.

[0032] Specifically, a pulse module 10 is communicatively connected to one side of the PLC control panel 7 , and the pulse module 10 is mainly used to facilitate personnel to operate the PLC control panel 7 .

[0033] Specifically, the pulse module 10 is a handwheel pulser, which is electrically connected to the PLC control panel 7. The handwheel pulser is operated by hand cranking, so that the PLC control panel 7 can control the motor 2 to rotate its output shaft forward and reverse.

[0034] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. A control system for a knitting height monitoring device in a needle disk of a weft knitting circular machine, comprising a base (1) of a weft knitting circular machine, a needle disk (3) driven by a motor (2) to rotate on the base (1), an upper disk (4) provided on the base (1) with a cam (5), and a monitoring component (6) provided on the base (1), wherein the butts of the knitting needles on the needle disk (3) are located in the slide grooves of the cam (5) so that the cam (5) drives the knitting needles to rise and fall, and the monitoring component (6) can monitor the rise and fall of the knitting needles, and is characterized in that: Also includes: controls; The control component comprises: a PLC control panel (7), an output module (8) and a separate opening module (9); The monitoring component (6) monitors the knitting needle fluctuation height and transmits the information to a PLC control panel (7) which is in communication connection with the monitoring component and is capable of presetting the knitting needle fluctuation value. The PLC control panel (7) compares the preset value with the monitoring value and controls the output module (8) which is in communication connection with the monitoring component to control the operation of the motor which is in control connection with the output module (8); The separate start module (9) is in communication connection with the PLC control panel (7) and is capable of enabling the PLC control panel (7) to start the motor 1 (2).

2. The control system of the knitting height monitoring device in the needle disc of a weft knitting circular machine according to claim 1 is characterized in that: The output module (8) is a motor driver, which is electrically connected to the motor one (2), and the motor one (2) driver is also electrically connected to the PLC control panel (7).

3. The control system of the knitting height monitoring device in the needle disc of a weft knitting circular machine according to claim 1 is characterized in that: The separate start module (9) is a push-button start switch, and the push-button switch is electrically connected to the PLC control panel (7).

4. The control system of the knitting height monitoring device in the needle disc of a weft knitting circular machine according to claim 1, characterized in that: The monitoring component (6) comprises a displacement sensor (11), the displacement sensor (11) is communicatively connected to the PLC control panel (7), and the sensing end in the displacement sensor (11) is connected to the knitting needle.

5. The control system of the knitting height monitoring device in the needle disc of a weft knitting circular machine according to claim 4, characterized in that: The displacement sensor (11) is a drawstring displacement sensor (11), the inner drawstring of which is fixedly connected to the bottom of the knitting needle.

6. The control system of the knitting height monitoring device in the needle disc of a weft knitting circular machine according to claim 1, characterized in that: One side of the PLC control panel (7) is communicatively connected to a pulse module (10).

7. The control system of the knitting height monitoring device in the needle disc of a weft knitting circular machine according to claim 6, characterized in that: The pulse module (10) is a handwheel pulser, which is electrically connected to the PLC control panel (7).

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