CN109226296B

CN109226296B - Wire arrangement control method and device for wire drawing machine and storage medium

Info

Publication number: CN109226296B
Application number: CN201811260859.0A
Authority: CN
Inventors: 蒋杰
Original assignee: Suzhou Anchi Control System Co ltd
Current assignee: Suzhou Anchi Control System Co ltd
Priority date: 2018-10-26
Filing date: 2018-10-26
Publication date: 2021-08-10
Anticipated expiration: 2038-10-26
Also published as: CN109226296A

Abstract

The invention discloses a wire arrangement control method of a wire drawing machine, which is executed by a control device, wherein the control device is used for generating a control instruction for a wire arrangement motor and a control instruction for a stretching motor and/or a wire take-up motor, and the method comprises the following steps: acquiring the frequency of a target take-up motor; calculating to obtain a target winding displacement motor frequency based on the target winding displacement motor frequency and preset parameters; the preset parameters at least comprise at least one of a lead screw lead and a row pitch, wherein the lead screw lead is the preset distance of the lead screw moving when a wire arranging motor of the wire drawing machine runs for one circle, and the row pitch is the preset distance of the lead screw moving when a wire winding motor of the wire drawing machine runs for one circle; and generating a control instruction corresponding to the frequency of the target winding displacement motor so as to control the frequency of the winding displacement motor. By the method, the wire arranging motor in the wire drawing machine can be accurately controlled. The application also provides a wire arrangement control device of the wire drawing machine and a storage medium.

Description

Wire arrangement control method and device for wire drawing machine and storage medium

Technical Field

The application relates to the field of wire drawing machine control, in particular to a wire drawing machine wire arrangement control method, a wire drawing machine wire arrangement control device and a storage medium.

Background

A wire drawing machine, also called a wire drawing machine or a wire drawing machine, is a key device in the wire drawing machine process, and meanwhile, the wire drawing machine is also a common device in the existing industrial field. The method is widely applied to metallurgical process production, mechanical manufacturing, ships, petrochemical industry, cables, wires and other industries. The control of each motor of the wire drawing machine, such as the control of a drawing motor, a wire arranging motor and a wire winding motor, is the key in the control of the wire drawing machine. At present, each motor is controlled by a separate control circuit, the integration level is low, the control accuracy is easy to reduce, and the inaccurate wire arrangement control can cause abnormal phenomena such as wire breakage, winding and the like, so that the low-efficiency wire drawing operation can be caused.

Disclosure of Invention

The technical problem mainly solved by the application is to provide a wire arrangement control method and device for a wire drawing machine and a storage medium. The frequency of the wire arranging motor of the wire drawing machine can be controlled more accurately.

In order to solve the technical problem, the application adopts a technical scheme that: the wire arranging control method of the wire drawing machine is executed by a control device, the control device is used for generating control commands for a wire arranging motor and generating control commands for a drawing motor and/or a wire collecting motor, and the method comprises the following steps:

acquiring the frequency of a target take-up motor;

calculating to obtain a target winding displacement motor frequency based on the target winding displacement motor frequency and preset parameters; the preset parameters at least comprise at least one of a lead screw lead and a row pitch, wherein the lead screw lead is a preset distance for the wire arrangement motor of the wire drawing machine to move for one rotation of the lead screw, and the row pitch is a preset distance for the wire take-up motor of the wire drawing machine to move for one rotation of the lead screw;

and generating a control instruction corresponding to the frequency of the target wire arranging motor so as to control the frequency of the wire arranging motor.

In order to solve the above technical problem, another technical solution adopted by the present application is: provided is a wire arranging control device of a wire drawing machine, comprising: a processor, a memory, and program data stored on the memory, the processor coupled to the memory, the processor when operating executing the program data in the memory to implement the method as described above.

In order to solve the above technical problem, the present application adopts another technical solution: there is provided a storage medium storing program data which, when executed, implements a method as described above.

According to the scheme, the target winding displacement motor frequency is obtained through calculation based on the acquired target winding motor frequency and the preset parameters, and the control instruction corresponding to the target winding displacement motor frequency is generated to control the winding displacement motor frequency. Through the process, the frequency of the wire arranging motor in the wire drawing machine can be adjusted in real time according to the frequency of the target wire collecting motor based on the control device, and the wire arranging control method of the wire drawing machine with high accuracy is provided, so that the condition that the wire breaking and winding are caused due to the fact that the wire drawing machine cannot be accurately controlled is avoided.

Drawings

FIG. 1 is a schematic flow chart of an embodiment of a method of controlling a wire drawing machine according to the present application;

FIG. 2 is a schematic flow chart of step S130 in the embodiment of FIG. 1 of the present application in another embodiment;

FIG. 3a is a schematic flow chart of an embodiment of a method for controlling take-up of a wire drawing machine according to the present application;

FIG. 3b is a schematic diagram of the structure of the associated motors and other associated components and control devices of the drawing machine of the embodiment shown in FIG. 3 a;

FIG. 4a is a schematic flow chart of another embodiment of a method for controlling take-up of a wire drawing machine according to the present application;

FIG. 4b is a schematic diagram of the structure of the relevant motors and other relevant components and the control device of the drawing machine of the embodiment shown in FIG. 4 a;

FIG. 5 is a schematic flow chart of a wire drawing machine wire arranging control method according to the present application;

FIG. 6 is a schematic flow chart of another embodiment of a method of wire drawing machine control according to the present application;

FIG. 7 is a schematic flow chart of a further embodiment of a method of controlling a wire drawing machine according to the present application;

FIG. 8 is a schematic flow chart of another embodiment of a method of wire drawing machine control according to the present application;

FIG. 9 is a schematic structural view of a drawing machine control apparatus of the present application in one embodiment;

FIG. 10 is a schematic diagram of a drawing machine control system of the present application in one embodiment;

FIG. 11 is a schematic structural view of a drawing machine control system of the present application in another embodiment;

fig. 12 is a schematic structural diagram of a storage medium according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first", "second" and "third" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any indication of the number of technical features indicated.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The method execution subject of the wire drawing machine control provided by the application is a wire drawing machine control device. In the control system of the wire drawing machine provided by the application, the method provided by the application is executed by the control device of the wire drawing machine to realize the configuration or the adjustment of the frequency of each motor in the wire drawing machine. It should be noted that the technical scheme that this application provided is applicable to middle-size and small-size wire drawing machine, and current wire drawing machine includes drawing motor, receipts line motor and winding displacement motor.

Fig. 1 is a schematic flow chart of a method for controlling a drawing machine according to an embodiment of the present invention. Specifically, in the present embodiment, the method for controlling a wire drawing machine includes:

s110: and the wire drawing machine control device acquires the target stretching motor frequency input by a user.

The control device of the wire drawing machine can directly acquire the target stretching motor frequency input by a user, or indirectly acquire the target stretching motor frequency, and the user refers to an operator in the wire drawing machine process.

In the present embodiment, the drawing machine control device directly obtains the target drawing motor frequency input by the user, and the further obtaining component is a circuit structure of the drawing machine control device having a component for processing data, generating instructions and sending the instructions to the drawing machine control device, and a function of the motor in the drawing machine to be controlled, and specifically may include: and (4) a DSP. When a user needs to start the wire drawing machine to draw a product, or in the running process of the wire drawing machine, the user inputs the target stretching motor frequency through an input unit in the wire drawing machine control device, such as a touch screen, a keyboard, a knob and the like according to the requirement. The input unit of the drawing machine control device comprises a knob component. Wherein, the knob part is provided with different frequency scales, and different frequency scales correspond to different voltage signals (for example, the voltage values are different). When a user selects a certain frequency, the knob part is only required to be rotated to the frequency scale, then a voltage signal corresponding to the frequency is output to the drawing machine control device through a circuit connected with the knob, the voltage signal is used for informing the drawing machine control device of the frequency input by the user, then the drawing machine control device generates a first control instruction matched with the frequency of a target drawing motor, the first control instruction is used for being output to the drawing motor to adjust the frequency of the drawing motor, and the target take-up motor frequency and the target winding displacement motor frequency are obtained based on the obtained target drawing motor frequency input by the user.

In other embodiments, the drawing machine control device may also obtain the target drawing motor frequency input by the user through other manners, for example, the user inputs the target drawing motor frequency through an input circuit (e.g., a target drawing motor frequency control window corresponding to a human-computer interface) connected to the control circuit, and the drawing machine control device obtains the target drawing motor frequency input by the user through the input circuit.

The target drawing motor is a motor used for controlling a drawing part in the wire drawing machine, when the drawing motor runs, the drawing part is directly driven to draw a drawn wire machine product, and the wire drawing wheel can be indirectly driven to run through driving of the drawing part. The wire stretching wheel can drive a product to be drawn which needs to be drawn under the indirect drive of the drawing motor to move and then send the product to the drawing part. In the present embodiment, the target stretching motor is an ac asynchronous motor.

S120: and generating a first control instruction matched with the target drawing motor frequency so as to adjust the drawing motor frequency of the wire drawing machine.

In the current embodiment, after the target drawing motor frequency input by the user is obtained, a first control instruction matched with the target drawing motor frequency is generated and sent to a drawing motor in the wire drawing machine to adjust the drawing motor frequency of the wire drawing machine.

In the present embodiment, after acquiring the target drawing motor frequency, the processor in the drawing machine control device sends an instruction to the driving circuit in the drawing machine control device to cause the driving circuit to generate a first control instruction, wherein the first control instruction is a voltage signal matching the target drawing motor frequency, and the drawing motor can be operated according to the target drawing motor frequency. Therefore, the voltage of the electric signal corresponding to the first control command matched with different target stretching motor frequencies is different, wherein the first control command is used for marking different frequency adjustments of the stretching motor corresponding to different voltage values.

S130: and determining the target wire collecting motor frequency and the target wire arranging motor frequency based on the current tension condition, and generating a second control instruction matched with the target wire collecting motor frequency and a third control instruction matched with the target wire arranging motor frequency so as to correspondingly adjust the wire collecting motor frequency and the wire arranging motor frequency of the wire drawing machine. The second control instruction and the third control instruction are generated by the wire drawing machine control device, sent to the corresponding motors, calculated by a processor in the wire drawing machine control device, generated by a driving circuit under the control of the processor and sent to the corresponding motors, and the voltages corresponding to the control instructions with different frequencies are different.

In order to ensure good wire drawing operation, abnormal conditions such as wire breakage and winding need to be avoided in the wire drawing process, and therefore when the target wire winding motor frequency and the target wire arranging motor frequency are determined, the target wire winding motor frequency and the target wire arranging motor frequency need to be configured according to the tension which can be borne by a drawn wire product. In other embodiments, of course, in the process of drawing the drawn product by the drawing machine, the target winding motor frequency and the target winding displacement motor frequency may be adjusted in real time according to the current tension condition, for example, after determining the two target frequencies according to the current tension condition and controlling the two corresponding motors to perform frequency adjustment, when the subsequent tension changes, a new target frequency is continuously determined according to the changed tension condition and the two corresponding motors are controlled to perform frequency adjustment, so as to ensure normal drawing.

Wherein, the tension condition is the condition of the mutual traction force existing in the inner part of the product undergoing wire drawing and vertical to the adjacent part at a certain position when the product is under the action of the tension force, and the current tension condition is influenced by the current frequency of the stretching motor. In the present embodiment, the tension condition is detected by the tension detecting means. It can be understood that when all the motors in the wire drawing machine are operated, the frequency of the wire take-up motor and the frequency of the wire arrangement motor, and whether there is an abnormal condition all affect the tension of the product being drawn.

It can be understood that, in another embodiment, after the wire drawing machine is operated, in addition to adjusting the target winding motor frequency and the target winding displacement motor frequency according to the current tension condition, the stretching motor frequency can be adjusted according to the current tension condition to meet the requirements of the wire drawing process.

If the operation speed of the current frequency of the take-up motor is judged to enable the tension in the wire drawing product to be small, the frequency of the stretching motor can be further properly adjusted to avoid abnormal conditions such as winding. Can send the warning and show for the user through man-machine interface by wire drawing machine controlling means this moment, because of the tension is less can appear winding scheduling abnormal phenomenon probably appearing, the suggestion user can select manual fine setting drawing motor frequency, can give the suggestion adjustment value simultaneously. After the user knows the warning, the frequency of the stretching motor can be adjusted according to the suggested adjusting value given by the wire drawing machine control device so as to avoid abnormal phenomena such as winding and the like. It can be understood that, since the frequencies of the motors in the drawing machine during drawing are mutually influenced and the drawing machine needs to be operated under the condition of keeping the tension balance of the drawn product, the set range can be adjusted only on the basis of the real-time frequency during the operation of the drawing machine, and the frequencies of the motors cannot be adjusted to an excessively large extent.

In another embodiment, in the operation process of the wire drawing machine, after the wire winding wheel finishes the wire winding of the target wire winding amount, the wire drawing machine is suspended, and the spool is replaced. When the take-up pulley (take-up spool) is replaced, the related recorded data can be automatically reset so as to update the data or eliminate errors. Wherein, the data to be reset at least comprises: and metering the drawn wire product and the winding diameter of a take-up pulley.

In other embodiments, errors due to various uncertainties may be eliminated by resetting the frequency of each motor after a preset time interval during operation of the drawing machine. The reset here refers to readjusting the real-time frequency of each motor in the wire drawing machine to the drawing motor frequency defined by the user at the previous time, the target take-up motor frequency calculated at the previous time, and the target wire arranging motor frequency calculated at the previous time, so as to eliminate the loss or error caused by friction.

In this embodiment, when the obtained tension condition is zero, it can be determined that an abnormal condition such as wire breaking and winding occurs in the product of the wire drawing machine, so an emergency stop command is started to control all the motors to stop running, so that the user can solve the abnormal problem such as wire breaking and winding. Wherein, the starting mode for the emergency instruction at least comprises the following steps: the processor of the integrated control device of the wire drawing machine is automatically started when judging that the abnormality occurs, and is manually started by an operator. Manual activation by an operator includes: and an operator triggers a button for emergency stop, and the operator triggers the button for emergency stop from a human-computer interface.

It should be noted that, in an application scenario of the technical scheme provided in the present application, a worker is first required to manually pull a product to be drawn in advance to complete all wiring on spools driven by motors, so that after step S110 and step S120 are completed, a drawing motor in a drawing machine can be started, and the drawing motor is accelerated to a target drawing motor frequency input by a user.

In the current embodiment, the target take-up motor frequency and the target winding displacement motor frequency are further determined according to the current tension condition in a product undergoing wire drawing, and the take-up motor frequency and the target winding displacement motor frequency can be accurately controlled according to real-time tension condition changes. Compared with the prior art that the control of the wire drawing machine needs to adopt a PLC (programmable Logic controller) and three independent frequency converters to respectively control each motor in the wire drawing machine, the method adopts the wire drawing machine control device to realize the integrated control of each motor in the wire drawing machine through the method. Compared with the prior art in which each motor is controlled respectively, the communication between the devices needs to be carried out between different frequency converters, the information interaction of the control of each motor can be realized in one control device, the integration level of the control part of the wire drawing machine can be improved, and the accuracy can be increased. Due to the improvement of the integration level, the circuit structure between the control device and the motor is simplified, and the assembly difficulty is reduced.

Meanwhile, the technical scheme provided by the application is executed by the wire drawing machine control device, namely the control over the stretching motor, the wire winding motor and the wire arranging motor is realized through the wire drawing machine control device, and a plurality of processes such as data processing, data communication, data exchange and the like are completed in the same control equipment, so that a complex external communication process is avoided, the control flow is simplified, and a simple and convenient control flow is provided for a user. Meanwhile, a technical basis is provided for simplifying the control circuit of the whole wire drawing machine.

The following will further describe the determination of the target take-up motor frequency and the target wire arranging motor frequency in the control of the wire drawing machine.

Referring to fig. 2, fig. 2 is a schematic flow chart of step S130 included in another embodiment shown in fig. 1. In this embodiment, the S130 further includes:

s231: and determining the frequency of the target take-up motor based on the current tension condition, and generating a second control instruction matched with the frequency of the target take-up motor.

The second control instruction is an instruction matched with the determined target wire rewinding motor frequency, is generated by a control circuit in the wire drawing machine control device and is sent to the wire rewinding motor, so that the wire rewinding motor operates at the determined target wire rewinding motor frequency. In the technical scheme provided by the application, the second control instruction can be an electric signal, wherein the voltage or the current of the electric signal is different corresponding to different target wire winding motor frequencies, so that the wire winding motor operates to the corresponding target wire winding motor frequency according to the electric signal. In the technical scheme provided by the application, the current tension condition is influenced by the real-time frequency of the stretching motor and the real-time frequency of the take-up motor, so that the current tension condition can be acquired in real time to acquire the change condition of the relative real-time frequency difference between the stretching motor and the take-up motor. The method for acquiring the current tension condition comprises the following steps: through the tension pendulum rod acquirement and through pulse detection part acquirement, then the device of the corresponding acquisition tension condition includes: a tension swing rod and a pulse detection component.

It should be noted that, in other embodiments, step S231 in the embodiment shown in fig. 2 may also be implemented by the following embodiment shown in fig. 3a or fig. 4a, and refer to the following description of the embodiment corresponding to fig. 3a or fig. 4 a.

S232: and determining the frequency of the target wire arranging motor according to the frequency of the target wire collecting motor, and generating a third control instruction matched with the frequency of the target wire arranging motor.

In the technical solution provided in the present application, the winding displacement motor frequency is mainly affected by the winding motor frequency, so after the winding motor frequency is determined in step S231, the winding displacement motor frequency is further determined according to the determined winding motor frequency. After determining the winding displacement motor frequency, the wire drawing machine control device further generates a third control instruction which is sent to the winding displacement motor and matched with the target winding displacement motor frequency. The third control command may specifically be an electrical signal similar to the first control command and the second control command described above. In other embodiments, when the components of the driving motor are integrated in the wire drawing machine, the first control command, the second control command and the third control command may be sent directly to the corresponding motors, so as to directly drive the motors to adjust according to the corresponding frequencies.

It should be noted that, in other embodiments, step S232 in the embodiment shown in fig. 2 may also be implemented by the following embodiment shown in fig. 5, and please refer to the following description of the embodiment corresponding to fig. 5.

Referring to fig. 3a, fig. 3a is a schematic flow chart of a method for controlling take-up of a wire drawing machine according to an embodiment of the present disclosure.

Referring first to fig. 3b, fig. 3b is a schematic structural diagram of a motor and other related components and a drawing machine control device in the drawing machine according to the embodiment when the tension detecting device is a tension swing rod.

As can be seen from fig. 3b, the drawn wire machine product 304 (the dotted line portion in fig. 3b) is indirectly driven by the drawing motor 308 by the drawing wheel 307, is conveyed to the drawing part 306, is drawn by the drawing part 306, is conveyed to the take-up pulley 303, and is driven by the take-up motor 302 by the take-up pulley 303 to complete take-up. The stretching motor 308 directly drives the stretching component 306, and drives the capstan 307 through transmission via the stretching component 306. Wherein, a tension swing link 305 is arranged between the stretching component 306 and the take-up pulley 303 for detecting the tension condition in the drawn machine product 304, so as to obtain the real-time frequency difference between the stretching motor 308 and the take-up motor 302. The tension swing rod feeds back the obtained tension signal from the AI1 port to a control circuit in the wire drawing machine control device 301 to obtain the target wire rewinding motor frequency. A control circuit in the wire drawing machine control device sends a first control instruction which can enable a drawing motor to operate according to the target drawing motor frequency through a PWM1 port, and the control circuit sends a second control instruction which can enable a wire take-up motor to operate according to the target wire take-up motor frequency through a PWM2 port. And the second control command is a voltage signal corresponding to the frequency of the target take-up motor. The three ports of PWM1, PWM2, and AI1 are either user defined or factory set for the processor.

With reference to fig. 3b, the method for controlling the take-up of the wire drawing machine shown in fig. 3a is further explained, and the method comprises the following steps:

s3311: and acquiring a tension signal fed back by the tension detection device, and calculating the auxiliary frequency according to the tension signal.

Wherein, tension detection device includes: a tension swing link and an impulse component. When the tension detecting device is a tension swing link, the tension signal is a feedback signal of the tension swing link, and the feedback signal of the tension swing link is sent to the drawing machine control device in the form of a voltage, which is defined as a feedback voltage in the present embodiment. When the tension detecting means is the pulse detecting member, the tension signal is the number of pulses fed back by the pulse member. In the scheme provided by the application, the integrated control device of the wire drawing machine utilizes the PID feedback principle when calculating the auxiliary frequency according to the tension signal. The method comprises the steps of defining a feedback signal of a tension detection device or a pulse difference value fed back by a pulse detection component as a feedback, adjusting the frequency of a take-up motor in real time according to a tension signal in a drawn wire product based on a PID (proportion integration differentiation) feedback principle in the operation process of the drawing machine to ensure the tension balance of the drawn wire product, wherein the first preset frequency is a given value. In the current embodiment, the adopted PID feedback principle determines whether a difference exists between the real-time frequency difference and the first preset frequency and a ratio of the frequency of the take-up motor to be adjusted by detecting a ratio of feedback to a given ratio, that is, a ratio of the real-time frequency difference corresponding to the feedback signal to the first preset frequency, and finally obtains the auxiliary frequency based on the obtained ratio. For an explanation that the tension detection device is an impulse component, refer to the explanation of the embodiment of fig. 4a and 4b below.

In another embodiment, when the tension detecting device is a tension swing link, the calculating the amplitude frequency according to the tension signal includes: and inquiring the real-time frequency difference corresponding to the feedback voltage. The tension swing rod can swing along with the tension change in a wire drawing product, and the feedback voltage measured by the tension swing rod is used for describing the real-time frequency difference between the drawing motor and the wire winding motor, and the real-time frequency difference corresponding to each feedback voltage is set in advance according to an empirical value, so that after the feedback voltage is measured by the tension swing rod, the frequency difference between the drawing motor and the wire winding motor can be obtained only by inquiring the real-time frequency difference corresponding to the feedback voltage.

After the step of querying to obtain the real-time frequency difference, the method further comprises the following steps: and calculating the difference between the real-time frequency difference and the first preset frequency according to the real-time frequency difference obtained by inquiry so as to obtain the amplitude frequency. The auxiliary frequency is the difference between the frequency difference required to maintain tension balance and the real-time frequency difference. As described above, in order to ensure a good drawing process, it is necessary to ensure the tension balance in the drawn product 304 during the control of the drawing machine, and the tension balance here means that it is ensured that the abnormal phenomena such as wire breakage due to excessive tension or winding due to excessive wire due to too small tension are not generated, so the tension balance may be a single point value or a single tension range.

In the present embodiment, a calibrated frequency value (i.e. the first preset frequency) is preset to determine whether the tension in the drawn product 304 (304 in fig. 3b refers to drawn product) in real time satisfies the requirement of tension balance. The first preset frequency is a frequency value of the corresponding tension swing link 305 in a balanced state, that is, a frequency value corresponding to a midpoint of the corresponding tension swing link 305 (a position of the midpoint of the tension swing link 305 may also be understood as a frequency value corresponding to a position where the tension swing link 305 keeps balanced). Then, the calculated auxiliary frequency in this embodiment is a difference value of the real-time frequency difference deviating from the first preset frequency, so that the tension balance can be ensured by adjusting the value corresponding to the auxiliary frequency on the basis of the main frequency.

It should be noted that, in the technical solution provided in the present application, the auxiliary frequency may be a positive value or a negative value, and when the auxiliary frequency is a positive value, it indicates that the frequency of the existing drawing motor is greater than the frequency of the take-up motor, and a value corresponding to the main and auxiliary frequencies needs to be added on the basis of the main frequency to keep the tension balance of the drawn product 304; if the auxiliary frequency is a negative value, which means that the frequency of the existing drawing motor 308 is less than the frequency of the take-up motor 302, a value corresponding to an absolute value of the auxiliary frequency needs to be subtracted from the main frequency (it can also be understood that the auxiliary frequency is directly summed with the main frequency) to maintain the tension balance of the drawn wire product 304.

It is understood that, in other embodiments, the set first preset frequency may also be a range value, which means that the tension swing link 305 is determined to meet the requirement of tension balance in the current range, so as to ensure the normal operation of the drawing process.

S3312: and acquiring the frequency of the stretching motor, and calculating the main frequency based on the frequency of the stretching motor.

Wherein, the main frequency is the main part forming the frequency of the take-up motor. In the present embodiment, the acquired stretching motor frequency is the target stretching motor frequency input by the user in step S110, and the acquired stretching motor frequency is directly output as the main frequency.

In another embodiment, the calculation may be set to remove the loss caused by friction and the like, so as to obtain the real-time frequency of the stretching motor and output the real-time frequency as the main frequency. Therefore, calculating the main frequency based on the stretching motor frequency specifically includes: and acquiring a transmission ratio, and taking the product of the frequency of the stretching motor multiplied by the transmission ratio as a main frequency. The transmission ratio is the ratio of the rotation speed of the drawing motor 308 to the linear speed of the constant speed wheel (not shown) of the drawing machine, and can be obtained by obtaining the rotation speed of the drawing motor 308 and the linear speed of the constant speed wheel of the drawing machine in real time and calculating. And after the frequency of the stretching motor is multiplied by the acquired transmission ratio, a value of frequency difference which is used for removing loss caused by friction or other errors can be obtained and is used as a main frequency forming the frequency of the take-up motor. The loss caused by friction among all motors in the wire drawing machine (loss includes friction loss between the take-up pulley 303 and a transmission belt or between the take-up pulley and a product of the wire drawing machine, resistance loss of an electric signal in circuit transmission and the like) is fully considered when the main frequency is calculated, so that more accurate main frequency can be calculated, and more accurate frequency of the take-up motor can be obtained.

In other embodiments, the calculation of the dominant frequency also takes into account the roll diameter variation. Calculating the main frequency based on the stretching motor frequency further comprises: the real-time winding diameter of the take-up pulley 303 is obtained (the real-time winding diameter of the take-up pulley 303 comprises the original take-up pulley 303 and the winding diameter corresponding to the product which is completely wound on the take-up pulley 303), the winding diameter coefficient is calculated by combining the obtained winding diameter, and the dominant frequency is obtained according to the obtained winding diameter coefficient and the running frequency of the stretching motor.

During the operation of the wire drawing machine, the winding diameter corresponding to the take-up pulley 303 is continuously updated along with the take-up. The calculation formula of the roll diameter is as follows: and D is V/pi f, wherein V is the linear speed of the take-up pulley (obtained according to the pulse number fed back by the pulse component), and f is the running frequency of the stretching motor.

In the current embodiment, the calculated roll diameter is further subjected to filtering processing, and then the roll diameter adopted when the take-up motor is controlled is updated in real time. When the difference between the real-time winding diameter obtained after filtering and the winding diameter adopted when the winding motor is controlled is overlarge, if the difference exceeds a preset value, the winding diameter can be updated in a step shape. In other embodiments, in order to avoid that the difference between the two roll diameters is too large due to continuous accumulation of the difference caused by long-time non-updating of the roll diameters, the time interval for updating the roll diameters can be shortened, so that the control of the wire drawing machine is prevented from being influenced by the too large difference between the roll diameters.

S3313: and summing the main frequency and the auxiliary frequency to obtain the target take-up motor frequency.

After the main frequency and the auxiliary frequency are respectively obtained, the main frequency and the auxiliary frequency are further subjected to summation calculation to obtain the target take-up motor frequency. As mentioned above, the auxiliary frequency may be a positive value or a negative value, so the value of the target take-up motor frequency calculated by summing the main frequency and the auxiliary frequency in step S3313 may be greater than the value of the original main frequency, or may be smaller than the value of the original main frequency.

S3314: and generating a second control instruction corresponding to the target wire take-up motor frequency so as to control the frequency of the wire take-up motor of the wire drawing machine.

After the target wire rewinding motor frequency is obtained through calculation, a second control instruction corresponding to the target wire rewinding motor frequency is generated and sent to the wire rewinding motor to control the frequency of the wire rewinding motor, so that the wire rewinding motor in the wire drawing machine operates according to the calculated target wire rewinding motor frequency.

In the embodiment shown in fig. 3 (including fig. 3a and fig. 3b), by obtaining the feedback voltage fed back by the tension swing rod 305, querying the real-time frequency difference corresponding to the feedback voltage based on the obtained feedback voltage, and obtaining the auxiliary frequency by subtracting from the first preset frequency, the frequency of the take-up motor to be set can be obtained more accurately, thereby ensuring the normal operation of the wire drawing process.

Referring to fig. 4a and 4b, fig. 4a is a schematic flow chart of another embodiment of a method for controlling take-up of a wire drawing machine according to the present application, and fig. 4b is a schematic structural diagram of a motor and other related components and a control device of the wire drawing machine in the current embodiment. In the present embodiment, the current tension condition is obtained by the pulse component, so the tension signal is the number of pulses detected by the pulse detection component in the present embodiment.

First, as can be seen from the structure shown in fig. 4b, a product 404 to be drawn (the dotted line portion in fig. 4 b) is conveyed to the drawing member 407 by the drawing wheel 408 under the driving of the drawing motor 409, is drawn by the drawing member 407, and is then conveyed to the take-up pulley 403, and is taken up by the take-up pulley 403 under the driving of the take-up motor 402. Wherein, a constant speed wheel 406 and a guide wheel 405 are sequentially arranged between the drawing component 407 and the take-up pulley 403, the first pulse component 411 is connected with the constant speed wheel, the second pulse component is connected with the guide wheel 405, the first pulse component 411 and the second pulse component 410 are respectively used for detecting the pulse number of the constant speed wheel 406 and the guide wheel 405, and are fed back to the control circuit through an HDI1 port and an HDI2 port on the control circuit of the wire drawing machine control device. The four ports of PWM1, PWM2, HDI1, and HDI2 are factory set.

The method shown in fig. 4a comprises:

s4311: the first frequency and the second frequency are calculated according to the number of pulses fed back by the first pulse part and the second pulse part respectively.

The pulse unit is a device for detecting pulses, and can count the pulses and feed them back to the control circuit in the drawing machine control device 401. The first pulse component 411 is arranged at the fixed speed wheel 406 in the wire drawing machine and used for detecting the real-time frequency of the stretching motor 409, and the second pulse component 410 is arranged at the guide wheel 405 in the wire drawing machine and used for detecting the current frequency of the wire winding motor 402. After the pulse numbers fed back by the first pulse part 411 and the second pulse part 410 are obtained, the obtained pulses are converted and calculated according to the relationship between the pulse numbers and the motor frequency to respectively obtain a first frequency and a second frequency.

S4312: the difference between the first frequency and the second frequency is calculated to obtain a real-time frequency difference. As mentioned above, the first frequency is substantially the frequency of the drawing motor 409, and the second frequency is substantially the current frequency of the wire winding motor 402, so that after the first frequency and the second frequency are calculated, the difference between the first frequency and the second frequency can be obtained, thereby obtaining the real-time frequency difference between the frequency of the drawing motor 409 and the wire winding motor 402. It should be noted that the real-time frequency difference obtained at this time is a difference between the frequencies after the loss caused by the friction, the resistance, and the like is removed, and the difference between the real-time frequencies of the drawing motor 409 and the take-up motor 402 can be accurately reflected.

S4313: and calculating the difference between the real-time frequency difference and the first preset frequency to obtain the auxiliary frequency. In the present embodiment, the first preset frequency is a frequency difference between the drawing motor 409 and the wire-receiving motor 402 corresponding to the tension balance of the drawn product 404, and is set and adjusted by a user according to an empirical value in advance. And calculating the difference between the real-time frequency difference and the first preset frequency, namely calculating the frequency of the take-up motor 402 required to be adjusted to keep the tension balance of the drawn wire product 404. As described above, in the technical solution provided by the present application, the secondary frequency may be a positive value or a negative value (of course, the secondary frequency may also be zero). Regarding the determination of the main frequency of the main portion constituting the target wire rewinding frequency, in the current embodiment, the control circuit 401 may directly calculate the main frequency by the pulse number fed back by the first pulse component 411, that is, output the first frequency calculated by the pulse number fed back by the first pulse component 411 as the main frequency. In other embodiments, when the pulse detection component is selected to obtain the current tension condition, the target stretching motor frequency input by the user can be directly obtained to be used as the main frequency.

S4314: and summing the main frequency and the auxiliary frequency to obtain the target take-up motor frequency.

S4315: and generating a second control instruction corresponding to the target wire take-up motor frequency so as to control the frequency of the wire take-up motor of the wire drawing machine.

For the explanation of steps S4314 and S4315 in this embodiment, please refer to S3313 and S3314 in the embodiment corresponding to fig. 3, which will not be described in detail herein. In the current embodiment, the pulse component is adopted to obtain the tension condition in the drawn wire product, so that the frequency difference between the drawing motor and the wire winding motor can be accurately measured, the accurate frequency of the wire winding motor is obtained, and the accurate control of the wire drawing machine is realized.

Fig. 5 is a schematic flow chart of a wire arranging control method of a wire drawing machine according to an embodiment of the present invention, which is a detailed description of the wire arranging control portion of the wire drawing machine control method. Since the wire arranging part is controlled as part of the wire drawing machine control, the wire drawing machine control is still performed by the wire drawing machine control device. The method comprises the following steps:

s5321: and acquiring the frequency of the target take-up motor.

In the current embodiment, the obtained target take-up motor frequency is the calculated target take-up motor frequency in the embodiment shown in fig. 3a or fig. 4 a. It will be appreciated that in other embodiments, the target take-up motor frequency obtained is the real-time take-up motor frequency with losses removed in the wire drawing machine.

The technical scheme provided by the application can be used for configuring the frequency for the motor when the wire drawing machine is started, and can also be used for adjusting the frequency of each motor of the wire drawing machine in operation according to the real-time change of the frequency of each motor in the wire drawing machine or the change of the tension condition of a wire drawn product, so that the acquisition mode of the frequency of the target wire winding motor is not limited. Therefore, after the frequency of the wire take-up motor is calculated and obtained, the target wire arranging motor frequency can be calculated directly according to the calculated target wire take-up motor frequency and by combining other required parameters. In other embodiments, the adjustment may be performed according to a real-time tension condition during the operation of the wire drawing machine, and the target winding motor frequency obtained by the last calculation may be called for calculating to obtain the target winding motor frequency.

S5322: and calculating to obtain the target winding displacement motor frequency based on the target winding displacement motor frequency and preset parameters.

After the target take-up motor is obtained, calling required preset parameters, and obtaining the target winding displacement motor frequency through preset calculation. Please refer to the corresponding explanation part of fig. 6 below for a detailed calculation process of the target take-up motor frequency.

Wherein, preset the parameter and include at least: at least one of lead and row pitch of the screw rod. The lead screw is one of the components used for wire arrangement, the lead screw lead is the moving distance of the lead screw when a wire arrangement motor in the wire drawing machine runs for one circle, the row pitch is the moving distance of the lead screw when a wire take-up motor in the wire drawing machine runs for one circle, and both the lead screw lead and the row pitch are preset and can be adjusted.

S5323: and generating a third control instruction corresponding to the target flat cable motor frequency.

After the target winding displacement motor frequency is obtained through calculation, a third control instruction of the corresponding target winding displacement motor frequency is generated and sent to a driving circuit corresponding to the winding displacement motor in the wire drawing machine, and the winding displacement motor in the wire drawing machine is controlled to operate according to the calculated winding displacement motor frequency, so that tension balance can be achieved in the wire drawing process.

Referring to fig. 6, fig. 6 is a schematic flow chart of a method of controlling a wire drawing machine according to another embodiment of the present application. In the current embodiment, step S5322 in the embodiment shown in fig. 5 specifically includes:

s6521: and calculating the speed of the take-up motor corresponding to the target take-up motor frequency. And under the condition that the target wire rewinding motor frequency is obtained, calculating the motor frequency according to the relation between the motor frequency and the motor speed, and specifically calculating the wire rewinding motor speed by referring to the following formula.

n1＝60*f1/p

Wherein f1 is the obtained target take-up motor frequency, p is the magnetic pole pair number of the motor, and n1 is the take-up motor rotating speed corresponding to the target take-up motor frequency, and the unit is revolutions per minute.

S6522: and calculating to obtain the target winding displacement motor frequency based on the winding displacement motor speed, the lead of the lead screw and the pitch.

And calculating to obtain the target winding displacement motor frequency based on the winding displacement motor speed calculated in the step S6521 and the lead of the screw rod and the pitch in the preset parameters. Specifically, the calculation is performed according to the following formula:

n2＝n1*nSpaceRoute/nLSRoute

where n2 is the target winding displacement motor speed, n1 is the winding displacement motor speed corresponding to the target winding displacement motor frequency obtained in the above steps, the unit is rpm, nSpaceRoute represents the preset pitch, nlroute is the lead of the lead screw, nSpaceRoute/nlroute represents the ratio of the winding displacement motor speed to the winding displacement motor speed, so the target winding displacement motor speed is obtained by multiplying the winding displacement motor speed corresponding to the target winding displacement motor speed by the ratio of the winding displacement motor speed to the winding displacement motor speed.

After the target winding displacement motor rotation speed is obtained, the target winding displacement motor frequency is further obtained according to the following formula. The formula:

f＝n2*h/60

where f is the target traverse motor frequency, n2 is the rotational speed of the target traverse motor obtained by the above calculation, h is the number of motor teeth, and h is 50 in the present embodiment. 60 means that the time is 60 seconds. When the wire drawing machine is in operation, the target wire arranging motor frequency can be corrected based on the obtained target wire arranging motor frequency.

S6523: and calculating the forward stroke and the reverse stroke of the screw rod. The screw rod stroke refers to the sum of the forward stroke and the reverse stroke of the screw rod, refers to the moving distance between the forward limit switch and the reverse limit switch, and is set by a user based on screw rod parameters. And calculating the forward stroke and the reverse stroke of the screw rod based on the set screw rod stroke and the position of the midpoint switch. The forward stroke of the screw rod is the moving distance of the screw rod from the midpoint switch to the forward limit switch, and the reverse stroke of the screw rod is the moving distance of the screw rod from the midpoint switch to the reverse limit switch.

S6524: and calculating the pulse number of the forward stroke and the pulse number of the reverse stroke according to the forward stroke and the reverse stroke of the screw rod.

Because among the technical scheme that this application provided, the winding displacement motor adopts step motor, can learn according to step motor's theory of operation, and the quantity of positive and negative pulse has been decided to the forward stroke and the reverse stroke of lead screw. Therefore, the forward stroke pulse number required by the distance corresponding to the forward stroke of the screw rod and the reverse stroke pulse number required by the distance corresponding to the reverse stroke of the screw rod can be calculated according to the calculated forward stroke and reverse stroke of the screw rod, so that the wire arranging motor can be accurately controlled to rotate, the screw rod is driven to move in the forward direction by the distance corresponding to the forward stroke, and the wire arranging motor can be accurately controlled to move in the reverse direction by the distance corresponding to the reverse stroke. In the present application, the forward and reverse directions are defined by using the midpoint switch as a starting origin, and defining the directions of the two sides as the forward and reverse directions, respectively.

S6525: and generating a control instruction of the operation direction of the wire arranging motor based on the forward stroke pulse number and the reverse stroke pulse number.

And generating a control command for controlling the running direction of the traverse motor based on the number of forward stroke pulses and the number of reverse pulses calculated in the above steps, wherein the forward direction and the reverse direction are relatively defined, that is, the forward direction is the reverse direction of the reverse direction. It is understood that in other embodiments, the forward direction in the present embodiment may be defined as the reverse direction, and the reverse direction may be defined as the forward direction. If the calculated number of the forward stroke pulses and the number of the reverse stroke pulses are respectively 50, a control instruction for controlling the running direction of the wire arranging motor is generated, 50 pulses are output to the wire arranging motor in the forward direction, and then 50 pulses are output in the reverse direction, so that the wire arranging motor is controlled to run under the premise of keeping the tension balance and ensuring normal wire arranging.

Further, step S6526 includes: and if the current pulse of the wire arranging motor is a forward stroke pulse and the number of the current pulse is more than the number of the forward stroke pulses, or if the current pulse of the wire arranging motor is a reverse stroke pulse and the number of the current pulse is more than the number of the reverse stroke pulses, generating a control command for indicating the reverse rotation of the wire arranging motor.

And if the current pulse of the wire arranging motor is a forward stroke pulse and the number of the current pulse is not more than the number of the forward stroke pulses, or if the current pulse of the wire arranging motor is a reverse stroke pulse and the number of the current pulse is more than the number of the reverse stroke pulses, generating a control instruction for indicating the wire arranging motor to rotate forwards.

Referring to fig. 7, fig. 7 is a schematic flow chart of a wire drawing machine according to another embodiment of the present disclosure. In the present embodiment, the time for controlling the motor to rotate forward or backward is also related to the tension condition, and it can be determined in advance whether an instruction for controlling the motor to rotate forward or backward needs to be generated according to the tension condition, so the step of generating the control instruction for instructing the traverse motor to rotate backward or forward further includes:

s701: and when the difference value between the calculated forward pulse number and the forward pulse number sent in real time is smaller than or equal to a preset threshold value, or the difference value between the calculated reverse pulse number and the reverse pulse number sent in real time is smaller than or equal to the preset threshold value, acquiring a tension signal fed back by the tension detection component.

In the process of drawing by the drawing machine, due to the fact that factors such as friction and resistance can cause tension change in a drawn product, the tension change condition in the drawn product needs to be monitored in real time, and when tension changes abnormally, abnormal conditions such as wire breakage and winding caused by abnormal tension can be avoided through real-time adjustment.

In the current embodiment, since the stroke of the entire lead screw is bounded by the midpoint switch, the stroke of the lead screw is divided into a forward stroke and a reverse stroke, and the pulse is divided into a forward pulse by a pulse corresponding to the forward stroke, and the pulse corresponding to the reverse stroke is a reverse pulse. After passing through the midpoint switch, when the difference value between the calculated forward pulse number and the forward pulse number sent in real time is smaller than or equal to a preset threshold value, or the difference value between the calculated reverse pulse number and the reverse pulse number sent in real time is smaller than or equal to the preset threshold value, a tension signal fed back by the tension detection component in real time is acquired. The tension detection component is the tension swing rod or the pulse component, and the like, and is not particularly limited. Of course in other embodiments it is not excluded to use other tension detecting means.

S702: and comparing the tension corresponding to the tension signal with a preset range.

The wire drawing machine integrated control device compares the tension corresponding to the acquired tension signal with the preset range to judge whether the current tension can continuously support the screw rod to move along the original direction.

S703: and when the tension exceeds a preset range, generating a control instruction for indicating the reverse rotation or the forward rotation of the wire arranging motor and sending the control instruction.

When the tension obtained by real-time monitoring exceeds a preset range, namely the current tension exceeds the preset tension range, the time for generating a control instruction for indicating the reverse rotation or the forward rotation of the winding displacement motor can be further adjusted, or the control instruction for indicating the reverse rotation or the forward rotation of the winding displacement motor is directly generated and sent to a driving circuit of the winding displacement motor, so that the operation direction of the winding displacement motor can be changed in advance, and abnormal problems such as wire breakage and the like caused by overlarge tension are avoided.

It should be noted that when the operation direction of the traverse motor is changed in advance due to the fact that the tension exceeds the preset range, the current real-time forward stroke or the current real-time reverse stroke of the lead screw is further recorded, and the current recorded real-time forward stroke or the current real-time reverse stroke of the lead screw is used as an initial value of the next lead screw stroke, and is used for calculating the next forward pulse number or the next reverse pulse number and controlling the forward rotation or the reverse rotation of the traverse motor.

Of course, if the acquired tension does not exceed the preset range, the pulse is continuously sent to control the winding displacement motor to operate in the original direction according to the calculated forward pulse number or reverse pulse number, and a command for controlling the winding displacement motor to change the operation direction is generated and sent until the corresponding pulse number is completed or other signals capable of triggering the winding displacement motor to change the operation direction are received, so that the operation direction of the winding displacement motor is controlled.

Referring to fig. 8, fig. 8 is a schematic flow chart of step S6526 in another embodiment shown in fig. 6. Fig. 8 is a schematic flow chart showing steps included in the present application when a control command for changing the current operation direction of the traverse motor is not normally generated based on the number of forward pulses and/or the number of reverse pulses. The method specifically comprises the following steps:

s801: and when detecting the high level output by the positive limit switch of the wire drawing machine, generating a control command for indicating the reverse rotation of the wire arranging motor.

In the winding displacement process, when a control instruction for changing the current running direction of the winding displacement motor is not normally generated based on two conditions of the forward pulse quantity and the tension feedback signal, whether the control instruction for controlling the forward rotation or the reverse rotation of the winding displacement motor needs to be generated or not is judged by further combining an electric signal output by a limit switch arranged on hardware, so that the change of the running direction of the winding displacement motor is accurately controlled.

Specifically, the lead screw is driven by the wire arranging motor to move between the forward limiting switch and the reverse limiting switch, when the lead screw moves to a position near the forward limiting switch, the forward limiting switch can be triggered, and when the forward limiting switch is triggered, a high level is output to the wire drawing machine control device. When the control device of the wire drawing machine detects the high level output by the positive limit switch of the wire drawing machine, a control instruction for indicating the reverse rotation of the wire arranging motor in the wire drawing machine is further generated (in other embodiments, the control instruction for indicating the positive rotation of the wire arranging motor in the wire drawing machine can be generated when the high level output by the positive limit switch is initially set, and the specific situation depends on the initial setting). In the current embodiment, the control instruction is used to control the driving circuit or the power supply part corresponding to the wire arranging motor to output a pulse in a direction opposite to that of the previous time, and is used to control the wire arranging motor to run in a reverse direction, so as to drive the moving direction of the screw rod to move from the reverse limit switch to the forward limit switch, and change the moving direction from the forward limit switch to the reverse limit switch. It should be noted that the control of the motor reverse rotation in the present embodiment refers to a reverse direction with respect to the original operation direction of the motor, and it is not particularly defined that a certain direction is a reverse direction.

S802: and when detecting the high level output by the reverse limit switch of the wire drawing machine, generating a control instruction for indicating the wire arranging motor to rotate forwards.

In step S801, when the lead screw moves to the reverse limit switch, the reverse limit switch outputs a high level to the drawing machine control device when the reverse limit switch is triggered. When the wire drawing machine control device detects the high level output by the reverse limit switch, a control instruction for indicating the wire arranging motor to rotate forwards is generated. It should be noted that, the directions for controlling the motor to rotate in the reverse direction and the forward direction in the present embodiment are preset by a user, and for example, the clockwise direction may be set as the forward direction, and the counterclockwise direction may be set as the reverse direction. It is understood that clockwise rotation may be set as the reverse rotation, and counterclockwise rotation may be set as the forward rotation according to the preference of the user.

It should be noted that, in the technical solution provided in the present application, the high level signal output by the limit switch is the highest priority level, followed by the tension feedback signal, and then the number of pulses. That is, when detecting the high level output by the forward limit switch or the high level output by the reverse limit switch, directly generating a control instruction for controlling the forward rotation or the reverse rotation of the winding displacement motor without considering the difference between the pulse number sent in real time and the calculated pulse number and referring to the tension feedback signal of the tension detection device; similarly, when the number of pulses sent in real time is less than the calculated number of pulses, but the tension feedback signal of the tension detection device indicates that the tension exceeds the preset range, a control instruction for controlling the wire arranging motor to rotate forwards or backwards is directly generated in advance.

Further, in the technical scheme provided by the application, at least one midpoint switch is arranged at a position between the forward limit switch and the reverse limit switch. In the present embodiment, however, a midpoint switch is provided at a midpoint position between the forward limit switch and the reverse limit switch. Therefore, in the solution provided by the present application, the cabling technology further includes:

and when detecting the high level output by the midpoint switch of the wire drawing machine, carrying out zero clearing treatment on the current pulse count of the wire arranging motor. Namely, when the screw rod moves through the midpoint switch, the midpoint switch is triggered to output a high level, and at the moment, the current pulse count of the wire arranging motor is cleared, namely, the counting is restarted. When detecting that a key switch of the wire drawing machine outputs a high level, the accumulation of errors can be effectively avoided by carrying out zero clearing treatment on the current pulse count of the wire arranging motor. Such as: according to the technical scheme provided by the application, when the high level output by the point switch of the wire drawing machine is detected, the pulse counting is reset, and the counting is restarted.

Fig. 9 is a schematic structural diagram of a drawing machine control device 90 according to an embodiment of the present disclosure. In the present embodiment, the drawing machine control device 90 includes: a processor 91, a driver circuit 92, a memory 93, and program data stored on the memory. Wherein the processor 91 is coupled to the driving circuit 92 and the memory 93. When receiving the control instruction from the processor 91, the driving circuit 92 outputs a driving signal required by the control instruction to the motor of the drawing machine, so that the driving motor operates according to the control instruction. The processor 91 is operative to execute the program data stored in the memory 93 and to perform the method of controlling the drawing machine as described in the various embodiments above in cooperation with the drive circuit 92.

In one embodiment, the processor 91 of the drawing machine control device 90 provided herein comprises: a chip capable of implementing digital signal processing technology, such as a DSP C2000 series chip.

Fig. 10 is a schematic structural diagram of an embodiment of a drawing machine driving control system 100 provided in the present application. In the present embodiment, the wire drawing machine control system 100 includes: a drawing machine control device 101, a tension detection member 103, and a motor 102.

The drawing machine control device 101 is a device as described above with reference to fig. 9. The control apparatus 101 may, in operation, implement the method of controlling a wire drawing machine as described above to achieve integrated control of the various motors and other components in the wire drawing machine 102 to ensure accurate control of the wire drawing machine.

The motor 102 is operated in accordance with the control command from the drawing machine control device. Wherein, motor 102 includes: the wire drawing machine comprises a drawing motor, a wire winding motor and a wire arranging motor.

The drawing motor is used for operating according to a requirement corresponding to a control instruction of the drawing machine control device 101 when receiving the first control instruction of the drawing machine control device 101, so as to drive a drawing part (a part for changing the specification of a drawn product, not shown) to draw the drawn product; the wire rewinding motor is used for operating according to a requirement corresponding to the instruction of the wire drawing machine control device 101 to drive a wire rewinding wheel when receiving the control instruction of the wire drawing machine control device 101, and performing wire rewinding on a product which is finished by the wire drawing machine according to the requirement of the instruction; the wire arranging motor is used for driving the wire arranging wheel according to the requirement corresponding to the instruction of the wire drawing machine control device 101 when receiving the control instruction of the wire drawing machine control device 101, and wire arranging is carried out on the premise of ensuring tension balance. It should be noted that the control command output from the drawing machine control device 101 to each motor is obtained by calculation processing of the drawing machine control device 101, and the electric signal for driving each motor to operate can ensure the tension balance of the drawn product.

The tension detection part 103 is connected with the drawing machine control device 101 and is used for detecting the tension in a drawn product in the working process of the drawing machine and feeding the tension back to the drawing machine control device 101. The tension detecting part 103 includes a tension swing lever and an impulse part.

Referring to fig. 11, a schematic structural diagram of another embodiment of a drawing machine driving control system according to the present application is shown, and the structure of the drawing machine system is described in the description of the present embodiment in combination with the process of the drawing machine and the drawing machine control method. As can be seen from the figure, the stretching motor 1102 is connected with a PWM1 port of the drawing machine control device 1101, an output end of the stretching motor 1102 is connected with the stretching part 1113, the stretching part 1113 is driven by the stretching motor to stretch a drawn product output by the wire drawing wheel 1104, an input end of the wire arranging motor 1110 is connected with a PWM2 port of the drawing machine control device 1101, an output end of the wire arranging motor 1110 is connected with the wire arranging wheel 1108 for driving the wire arranging wheel 1108 to rotate, an input end of the wire winding motor 1111 is connected with a PWM3 port of the drawing machine control device 1101, and an output end of the wire winding motor 1111 is connected with the wire winding wheel 1109 for driving the wire winding wheel 1109. The connection among the wire stretching wheel 1104, the stretching part 1113, the constant speed wheel 1106, the guide wheel 1103, the wire arranging wheel 1108 and the wire collecting wheel 1109 is through the drawn wire product 1112, wherein in the current embodiment, the wire stretching wheel 1104 is driven by the stretching part 1113 to rotate so as to output the drawn wire product to the stretching part 1113. Of course, in other embodiments, a separate drive motor or device may be provided for the capstan 1104 to control the rotation of the capstan to output the drawn product to the drawing member 1113.

Before the drawing system 1100 is started, the user manually finishes the drawing product 1112 from the wire drawing wheel 1104 to the drawing part 1113, then to the first gear of the constant speed wheel 1106, then to the guide wheel 1103, then from the guide wheel to the second gear of the constant speed wheel 1106, then to the wire discharging wheel 1108, and finally to the wire winding wheel 1109 through the wire discharging wheel 1108. After the threading of the product to be drawn 1112 is completed, a user inputs a target drawing motor frequency through the drawing machine control device 1101, a control circuit (not shown) in the drawing machine control device 1101 obtains a voltage to be sent to the drawing motor through conversion calculation after acquiring the frequency of the target drawing motor (the value calculated by the drawing machine control device can be embodied as a duty ratio), generates a first control instruction matched with the target drawing motor frequency, and sends the first control instruction to the drawing motor so as to drive the drawing motor to operate according to the target drawing motor frequency.

The wire drawing machine control device 1101, while acquiring the target stretching motor frequency input by the user, further determines the target wire rewinding motor frequency and the target wire arranging motor frequency in combination with the tension condition obtained in real time, and generates a second control instruction and a third control instruction after determining the target wire rewinding motor frequency and the target wire arranging motor frequency respectively. The final drawing machine control device 1101 sends the first control instruction, the second control instruction and the third control instruction to the corresponding motors respectively, and is used for driving the corresponding motors to operate according to the corresponding target frequencies so as to ensure normal drawing operation.

In the present embodiment, the tension condition is obtained by detecting the constant speed wheel 1106 and the guide wheel 1103 by the first pulse part 1105 and the second pulse part 1107 in fig. 11, wherein the first pulse part 1105 and the second pulse part each obtain the number of pulses of the constant speed wheel 1106 and the guide wheel through sensors, the feedback end of the first pulse part 1105 is connected to the HDI1 port on the drawing machine control device 1101, the feedback end of the second pulse part 1107 is connected to the HDI2 port on the drawing machine control device, the drawing machine control device can obtain the real-time frequency difference between the frequency of the drawing motor and the frequency of the take-up motor after obtaining the number of pulses fed back by the two pulse detection parts, the obtained real-time frequency difference is used to determine whether the current frequency of the drawing motor and the frequency of the take-up motor can maintain tension balance, and the result of the determination is used to instruct to adjust the frequency of at least one of the motors. The present application also provides a storage medium, and fig. 12 is a schematic structural diagram of the storage medium 120 provided in the present application in an embodiment. The storage medium 120 stores program data, and the method of controlling the drawing machine as described above is implemented when the program data 121 stored in the storage medium 120 is executed. Specifically, the storage medium 120 may be one of a memory of a terminal device, a personal computer, a server, a network device, or a usb disk, and is not limited herein.

The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims

1. A wire arranging control method of a wire drawing machine is characterized in that the method is executed by a control device, the control device is used for generating control instructions for a wire arranging motor and generating control instructions for a stretching motor and/or a wire collecting motor, and the method comprises the following steps:

acquiring the frequency of a target take-up motor;

generating a control instruction corresponding to the frequency of the target winding displacement motor so as to control the frequency of the winding displacement motor;

after the step of calculating the target winding displacement motor frequency based on the target winding displacement motor frequency and the preset parameters, the method further comprises the following steps:

calculating the forward stroke and the reverse stroke of the screw rod;

calculating the pulse number of the forward stroke and the pulse number of the reverse stroke according to the forward stroke and the reverse stroke of the screw rod;

when the difference value between the calculated forward pulse number and the forward pulse number sent in real time is smaller than or equal to a preset threshold value, or the difference value between the calculated reverse pulse number and the reverse pulse number sent in real time is smaller than or equal to the preset threshold value, acquiring a tension signal fed back by a tension detection component;

according to the tension condition, whether an instruction for controlling the wire arranging motor to rotate forwards or backwards needs to be generated or not is judged in advance, so that the wire arranging motor changes the operation direction in advance;

when the running direction of the wire arranging motor is changed in advance due to the fact that the tension exceeds the preset range, the method further comprises the following steps: and recording the current real-time forward stroke or reverse stroke of the screw rod, and using the current recorded real-time forward stroke or reverse stroke of the screw rod as an initial value for calculating the forward pulse number or the reverse pulse number next time.

2. The wire arranging control method of the wire drawing machine according to claim 1, wherein the calculating of the target wire arranging motor frequency based on the target wire winding motor frequency and preset parameters comprises:

calculating the speed of a take-up motor corresponding to the target take-up motor frequency;

and calculating to obtain the target winding displacement motor frequency based on the winding displacement motor speed, the lead screw lead and the pitch.

3. The wire arranging control method of a wire drawing machine according to claim 1, wherein the pre-judging whether a command for controlling the forward rotation or the reverse rotation of the wire arranging motor needs to be generated according to the tension condition so that the wire arranging motor changes the running direction in advance comprises the following steps:

comparing the tension corresponding to the tension signal with a preset range;

and when the tension exceeds the preset range, generating a control instruction for indicating the reverse rotation or the forward rotation of the winding displacement motor and sending the control instruction.

4. The wire arranging control method of a wire drawing machine according to claim 3, after calculating the number of forward stroke pulses and the number of reverse stroke pulses according to the forward stroke and the reverse stroke of the screw, further comprising:

generating a control instruction of the operation direction of the wire arranging motor based on the forward stroke pulse number and the reverse stroke pulse number:

if the current pulse of the wire arranging motor is a forward stroke pulse and the number of the current pulse exceeds the number of the forward stroke pulses; or if the current pulse of the wire arranging motor is a reverse stroke pulse and the number of the current pulse is not more than the number of the reverse stroke pulses, generating a control instruction for indicating the wire arranging motor to reversely rotate;

if the current pulse of the wire arranging motor is a forward stroke pulse and the number of the current pulse is not more than the number of the forward stroke pulses; or if the current pulse of the winding displacement motor is a reverse stroke pulse and the number of the current pulse is more than the number of the reverse stroke pulses, generating a control instruction for indicating the winding displacement motor to rotate forwards.

5. The wire-drawing machine wire arranging control method according to claim 4, wherein after the control command for changing the current operating direction of the wire arranging motor is generated based on the number of forward stroke pulses and the number of reverse stroke pulses, when the control command for changing the current operating direction of the wire arranging motor is not normally generated based on the number of forward stroke pulses and the number of reverse stroke pulses, the method further comprises:

when detecting the high level output by the positive limit switch of the wire drawing machine, generating a control instruction for indicating the reverse rotation of the wire arranging motor;

and when detecting the high level output by the reverse limit switch of the wire drawing machine, generating a control instruction for indicating the wire arranging motor to rotate forwards.

6. The wire drawing machine wire arranging control method according to claim 5, characterized by further comprising:

and when detecting the high level output by the midpoint switch of the wire drawing machine, carrying out zero clearing treatment on the current pulse count of the wire arranging motor.

7. The wire arranging control method of the wire drawing machine according to claim 1, wherein the obtaining of the target wire rewinding motor frequency comprises:

and determining a target take-up motor frequency based on the current tension condition, and generating a second control instruction matched with the target take-up motor frequency so as to adjust the take-up motor frequency of the wire drawing machine.

8. A wire arranging control device of a wire drawing machine is characterized by comprising:

a processor, a memory, and program data stored on the memory, the processor coupled to the memory, the processor in operation executing the program data in the memory to implement the method of any of claims 1-7.

9. A storage medium storing program data which, when executed, implements a method according to any one of claims 1 to 7.