A method for producing yarns of different thicknesses

Abstract

The present invention discloses a method for producing yarns of different thicknesses, comprising: defining a cam sequence table for a number of electronic cam ratios, defining a time sequence table for the specific moment and duration corresponding to each electronic cam ratio, and writing the cam sequence table and the time sequence table into controllers corresponding to a plurality of motors; the controller selects a corresponding electronic cam ratio from the cam sequence table at a time according to the set time sequence table, and controls a plurality of motors to drive corresponding rollers to perform variable speed synchronous action with the duration corresponding to the electronic cam ratio. In the present invention, the controller selects an electronic cam ratio at a time according to the requirements of the timetable to control the motor to drive the rollers to operate synchronously for a corresponding duration. By precisely controlling the action moment and duration of each electronic cam table, the thickness of each segment of the produced yarn is different, and the length of the segment meets the design requirements. The controller automatically controls according to the set timetable, so there will be no signal delay or the like.

Description

Technical Field

[0001] The invention relates to the technical field of yarn textiles, in particular to a method for producing yarns of different thicknesses. Background Art

[0002] Yarn is a textile made from various textile fibers processed into a certain fineness for use in weaving, rope making, thread making, knitting, and embroidery. During yarn production, the ring spinning frame uses a drafting drive system to drive the front, middle, and back rollers to clamp the fibers at different speeds, thereby drafting the coarse yarn into fine yarn.

[0003] At present, when producing yarn, the existing technology can only make the yarns of the same batch into yarns of the same thickness during production. As people's pursuit of clothing quality becomes higher and higher, the types of yarns are also increasing. At present, there is a kind of yarn whose thickness of each segment is different. There is no better production method for this kind of yarn. It can ensure that the thickness of each segment of the yarn is within the design requirements, and its yield rate cannot be guaranteed. When the yarn is produced, the time for connecting each segment of different thickness must be controlled in place, which places high demands on the control of the motor. If there is a delay, it may cause the length of the segments of different thickness in the yarn to be unable to be accurately controlled, which may cause some segments to be long and some segments to be short, which cannot meet the use requirements. Summary of the Invention

[0004] The purpose of the present invention is to solve the above problems and to design a method for producing yarns of different thicknesses. The thickness and length of each segment of the produced yarn are different.

[0005] The technical solution of the present invention to achieve the above-mentioned object is a method for producing yarns of different thicknesses, comprising: defining a cam number table for a plurality of electronic cam ratios, defining a time sequence table for the specific moment and duration corresponding to each electronic cam ratio, and writing the cam number table and the time sequence table into controllers corresponding to a plurality of motors. The controller selects the corresponding electronic cam ratio from the cam number table at a time according to the set time sequence table, and controls the plurality of motors to drive the corresponding rollers to perform variable speed synchronous motion according to the duration corresponding to the electronic cam ratio.

[0006] Before the controller controls the corresponding motor to perform synchronous action, the controllers in all motors receive a synchronous reference sequence signal, and the controller controls the motor to perform signal action according to the received synchronous reference sequence signal. Before the motor performs a signal action, the controller performs action conversion according to the received synchronous reference signal, determines whether the motor is rotating forward or reverse, and determines the action parameters.

[0007] Furthermore, the controller corresponding to each motor has independent hardware for selecting the cam number in the cam number table, and the hardware selection is a coding method including binary code.

[0008] Furthermore, after controlling the corresponding motors to move synchronously, the controller detects in real time whether a hardware error occurs in the motor. If it is detected that an error or delay occurs in the operation of a motor, the controller executes its own execution program according to the priority of the decision, or centrally executes all controllers to stop all motors, and then comprehensively processes the error information.

[0009] Compared with the prior art, the beneficial effects are:

[0010] In the present invention, a cam number table is defined by defining several electronic cam ratios, and a time sequence table is defined by the moment and duration corresponding to each electronic cam ratio. The controller selects the corresponding electronic cam ratio at the moment according to the requirements of the time sequence table to control the motor to drive the corresponding roller to change speed and operate synchronously for the corresponding duration. By accurately controlling the action moment and duration of each electronic cam ratio, it can be ensured that the thickness of each segment of the produced yarn is different, and it can also be ensured that the length of each segment of the yarn with different thickness meets the design requirements. There will be no phenomenon of the yarn in each segment being too thick, too thin, too long, too short, etc. Since the controller automatically controls according to the set timetable, there will be no signal delay, etc., and the final quality of the product is also guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a flowchart of the production method of yarns of different thicknesses in the present invention; DETAILED DESCRIPTION

[0012] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0013] As shown in the figure, this embodiment proposes a method for producing yarns of different thicknesses, which mainly includes the following steps:

[0014] The first step is to define a cam number table for several electronic cam ratios, define a duration sequence table for a specific moment and duration corresponding to each electronic cam ratio, and write the cam number table and duration sequence table into the controllers corresponding to multiple motors. The number of electronic cam ratios is generally preferably 16;

[0015] The second step is to send a synchronization reference sequence signal to the controllers of all motors. The controllers control the motors to execute signal actions according to the received synchronization reference sequence signal. Before the motors execute signal actions, the controllers perform action conversion and hardware selection cam settings according to the received synchronization reference sequence signal to determine whether the motors are to rotate forward or reverse, and determine specific action parameters or curve operation modes.

[0016] Step 3: When the motor executes the signal action, the upper controller or the controller body will select the corresponding electronic cam ratio from the cam sequence table according to the set timetable, and control multiple motors to drive the corresponding rollers to perform speed-changing synchronous action according to the duration corresponding to the electronic cam ratio;

[0017] The fourth step is to detect in real time whether there is a hardware error in the motor. If an error or delay is detected during the operation of a motor, the controller's own execution program will be executed according to the decision priority, or all controllers will be executed centrally to stop all motors. Then, the error information will be comprehensively processed.

[0018] Specifically, in the first step, the 16 electronic cam ratios correspond to a specific moment respectively. For example, when a specific moment is reached, it corresponds to an electronic cam ratio. When the controller controls the motor to move with the electronic cam ratio, the running time of the controlled motor is the duration corresponding to the electronic cam ratio. As the time changes, when another specific moment is reached, the controller will switch the electronic cam ratio and repeat the above action. By controlling the 16 electronic cam ratios and the specific moment and duration corresponding to each electronic cam ratio, the roller action mode can be controlled, thereby controlling the thickness and length of different segments of the yarn when stretching the yarn.

[0019] In the fourth step, the controllers in all motors are connected to the master control system using a communication bus. The controllers have the first priority during execution. Generally, if an error or delay is detected during the operation of the motor, the corresponding controller will execute its own control program first according to the priority, causing the motor to stop operating. The master control system has the second priority and will send a signal to execute all controllers to control the motor to stop operating.

[0020] It should be noted that the communication between the master control system and the controller is preferably connected using the RS485 communication bus. The RS485 communication bus can carry out long-distance and efficient communication in an environment with electronic noise and has good anti-interference ability. Therefore, it can better transmit signals to the corresponding components without signal delay problems. In this way, it can be ensured that there will be no signal delay when the motor is operating, so that there will be no signal delay when each electronic cam is connected before and after.

[0021] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention. Any changes that may be made to certain parts thereof by those skilled in the art all reflect the principles of the present invention and fall within the scope of protection of the present invention.

Claims

1. A method for producing yarns of different thicknesses, characterized in that: include: A cam sequence table is defined for several electronic cam ratios, and a time sequence table is defined for the specific time and duration corresponding to each electronic cam ratio. The cam sequence table and the time sequence table are written into controllers corresponding to multiple motors. The controller selects the corresponding electronic cam ratio from the cam sequence table at the time according to the set time sequence table, and controls the multiple motors to drive the corresponding rollers to perform speed-changing synchronous actions according to the duration corresponding to the electronic cam ratio. Before the controller controls the corresponding motor to perform synchronous action, the controllers in all motors receive a synchronous reference sequence signal, and the controller controls the motor to perform signal action according to the received synchronous reference sequence signal. Before the motor performs a signal action, the controller performs action conversion according to the received synchronous reference signal, determines whether the motor is rotating forward or reverse, and determines the action parameters.

2. The method for producing yarns of different thicknesses according to claim 1, characterized in that: The controller corresponding to each motor has independent hardware for selecting the cam number in the cam number table. The hardware selection is an encoding method including binary code.

3. The method for producing yarns of different thicknesses according to claim 1, characterized in that: After controlling the corresponding motor to move synchronously, the controller detects in real time whether a hardware error occurs in the motor. If it is detected that an error or delay occurs during the operation of a motor, the controller executes its own execution program according to the decision priority, or executes all controllers centrally to stop all motors from operating, and then comprehensively processes the error information.

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