阅读说明：本技术 丝筒自动换向方法以及系统 (Automatic reversing method and system for wire barrel ) 是由 郑昌尽 于 2020-10-26 设计创作，主要内容包括：本发明涉及线切割技术领域,具体为丝筒自动换向方法以及系统。在丝筒上丝的同时,编码器形成一个起点信号,记录在上位机内,当结束上丝,编码器形成一个终点信号,记录在上位机内,上位机控制电机在起点信号开始正转,在终点信号进行反转,实现丝筒自动换向动作,上位机设置提前量,通过提前量的设定来改变电机正转和反转的时间点,从而实现调节换向丝筒换向行程。上述方法操作简单,调节方便,要改变丝筒换向行程或者调节精度,直接通过上位机就能实现。(The invention relates to the technical field of linear cutting, in particular to a method and a system for automatically reversing a wire barrel. When the silk is fed on the silk tube, the encoder forms a starting point signal which is recorded in the upper computer, when the silk feeding is finished, the encoder forms an end point signal which is recorded in the upper computer, the upper computer controls the motor to start rotating forwards at the starting point signal, and rotate backwards at the end point signal, so that the automatic reversing action of the silk tube is realized, the upper computer sets the advance, and the time points of the rotating forwards and the rotating backwards of the motor are changed through the setting of the advance, so that the reversing stroke of the reversing silk tube is adjusted. The method is simple to operate and convenient to adjust, and can be directly realized through an upper computer when the reversing stroke of the wire barrel needs to be changed or the adjusting precision needs to be changed.)

1. The automatic reversing method for the wire barrel comprises a motor, an encoder and an upper computer, wherein the motor is respectively connected with the encoder and the upper computer, the upper computer is connected with the encoder, and the automatic reversing method comprises the following steps:

firstly, when a yarn is fed on a yarn drum, an encoder forms a starting point signal and records the starting point signal in an upper computer, when the yarn feeding is finished, the encoder forms an end point signal and records the end point signal in the upper computer, the upper computer controls a motor to start to rotate forwards at the starting point signal and rotate backwards at the end point signal, the automatic reversing action of the yarn drum is realized, the upper computer sets an advance, and the time points of the forward rotation and the reverse rotation of the motor are changed through the setting of the advance, so that the reversing stroke of the reversing yarn drum is adjusted.

2. The utility model provides a silk section of thick bamboo automatic reversing system which characterized in that: including motor, host computer, encoder, converter, the converter is connected with host computer, motor respectively, and the motor is connected with the encoder, and the encoder is connected with the host computer, and the output of the U, V, W of converter is connected with the input of the U, V, W of motor respectively, and the afterbody at the motor is connected to the encoder.

3. The automatic reversing system for a package of wire according to claim 2, wherein: the upper computer comprises a controller, a feedback port, a forward control port and a reverse control port, wherein the controller is respectively connected with the feedback port, the forward control port and the reverse control port are respectively connected with the frequency converter, and the feedback port is connected with the encoder.

4. The automatic reversing system for a package of wire according to claim 3, wherein: the motor positive and negative rotation circuit is further included, the input end of the motor positive and negative rotation circuit is respectively connected with the positive control port and the negative control port, and the output end of the motor positive and negative rotation circuit is connected with the frequency converter.

Technical Field

The invention relates to the technical field of linear cutting, in particular to a method and a system for automatically reversing a wire barrel.

Background

A Wire cut Electrical Discharge Machining (WEDM), which belongs to the field of Electrical Machining, and the Wire cut Electrical Discharge Machining was also used in the last soviet union of 1960, and the basic physical principle of the Wire cut Electrical Discharge Machining is that free positive ions and electrons are accumulated in the field to form an ionized conductive channel quickly. When the wire cutting machine tool is used by the former Soviet union Lazarin Kovar to research the phenomenon and reason that the switch contact is corroded and damaged by spark discharge, the phenomenon and reason that the local metal can be melted and oxidized by the instantaneous high temperature of the electric spark are discovered, so that the electric spark machining method is created and used.

The storage silk section of thick bamboo of wire cut electrical discharge machining bed often need control the sideslip switching-over about the course of the work, all through the manual work condition of observing storage silk section of thick bamboo at present, then the switching-over of storage silk section of thick bamboo is controlled to the mode of manual press button, but manual operation is troublesome and inaccurate, or through the relay, trigger switches such as photoelectric switch realize the operation of silk section of thick bamboo switching-over, this kind of structure is just very inconvenient when needs are adjusted, the regulation all needs manual regulation every time, the precision is not high, moreover, and complex operation, the use still often damages the needs to be changed.

Disclosure of Invention

The invention aims to provide a method and a system for automatically reversing a wire barrel so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a method for automatically reversing a wire barrel comprises a motor, an encoder and an upper computer, wherein the motor is respectively connected with the encoder and the upper computer, the upper computer is connected with the encoder, firstly, when the wire barrel is fed with wires, the encoder forms a starting point signal which is recorded in the upper computer, when the wire feeding is finished, the encoder forms a terminal point signal which is recorded in the upper computer, the upper computer controls the motor to start forward rotation at the starting point signal, and reverse rotation is carried out at the terminal point signal, so that the automatic reversing action of the wire barrel is realized, the upper computer sets an advance, and the forward rotation time point and the reverse rotation time point of the motor are changed through setting the advance, so that the reversing stroke of the reversing wire barrel is.

According to a further technical scheme, the automatic reversing system for the wire barrel comprises a motor, an upper computer, an encoder and a frequency converter, wherein the frequency converter is respectively connected with the upper computer and the motor, the motor is connected with the encoder, the encoder is connected with the upper computer, the output end of U, V, W of the frequency converter is respectively connected with the input end of U, V, W of the motor, and the encoder is connected to the tail of the motor.

Preferably, the upper computer comprises a controller, a feedback port, a forward control port and a reverse control port, the controller is respectively connected with the feedback port, the forward control port and the reverse control port are respectively connected with the frequency converter, and the feedback port is connected with the encoder.

Preferably, the motor control circuit further comprises a motor forward and reverse rotation circuit, an input end of the motor forward and reverse rotation circuit is connected with the forward control port and the reverse control port respectively, and an output end of the motor forward and reverse rotation circuit is connected with the frequency converter.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the traditional trigger structures such as a relay switch and a photoelectric switch are replaced by the encoder, so that only the motor and the screw rod are arranged on the operation structure of the wire barrel, and no redundant structure is added.

2. The invention sets the reversing position through the pulse feedback of the code, the encoder forms a forward rotation signal when the yarn is fed, and a reverse rotation signal is formed until the yarn feeding is finished, the upper computer performs the forward rotation and the reverse rotation of the motor through the pulse signal, the specific process is operated by combining the yarn feeding process of the yarn cylinder, the yarn feeding button is required to be pressed down at the upper point of the upper computer when the yarn feeding is finished, the upper yarn signal corresponds to the forward rotation signal of the encoder, the upper yarn end signal corresponds to the reverse rotation signal of the encoder, the positioning is very accurate, compared with the traditional system, the service life is long, and the real-time monitoring is convenient.

3. The invention has very convenient stroke adjustment, and because the pulse signal is set for the encoder, a standard stroke signal is formed, even if the positioning is not accurate, the advance amount or the delay amount can be set by the upper computer, thereby adjusting the specific reversing stroke and achieving the adjustment of the reversing precision and the stroke change.

Drawings

Fig. 1 is a schematic diagram of a method and a system for automatically reversing a wire tube.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 invention.

Referring to fig. 1, the present invention provides a technical solution: a method for automatically reversing a silk tube comprises a motor, an encoder and an upper computer, wherein the motor is respectively connected with the encoder and the upper computer, the upper computer is connected with the encoder, firstly, when silk is fed on the silk tube, the encoder forms a starting point signal, namely A-forward starting point, and is recorded in the upper computer, when the silk feeding is finished, the encoder forms an end point signal, namely B-reverse starting point, and is recorded in the upper computer, the upper computer controls the motor to start forward rotation at the starting point signal and carry out reverse rotation at the end point signal, so that the automatic reversing action of the silk tube is realized, the upper computer is provided with an advance, the forward rotation time point and the reverse rotation time point of the motor are changed through the setting of the advance, so that the reversing stroke of the reversed silk tube is adjusted, the automatic reversing system of the silk tube comprises the motor, the upper computer, the encoder and a frequency converter, the frequency converter, the encoder is connected with the host computer, the U, V, W's of converter output is connected with the U, V, W's of motor input respectively, the afterbody at the motor is connected to the encoder, the host computer include controller, feedback port, forward control port, reverse control port, the controller respectively with feedback port, forward control port, reverse control port is connected, forward control port, reverse control port are connected with the converter respectively, the feedback port is connected with the encoder, still include the motor and just reverse the circuit, the input of the motor just reverse the circuit respectively with forward control port, reverse control port is connected, the output and the converter of the motor just reverse the circuit are connected.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.