CN106744028B

CN106744028B - Tension control system

Info

Publication number: CN106744028B
Application number: CN201710034299.6A
Authority: CN
Inventors: 潘登; 马邦科; 郭久林
Original assignee: Richview Electronics Co ltd
Current assignee: Wuhan Xinchuangyuan Semiconductor Co ltd
Priority date: 2017-01-18
Filing date: 2017-01-18
Publication date: 2020-08-21
Anticipated expiration: 2037-01-18
Also published as: CN106744028A

Abstract

The invention provides a tension control system, and aims to solve the problem that a control mode of a tension control system in the prior art is not flexible enough. The tension control system includes: an unwinding section control part configured to realize constant-tension unwinding of a flexible substrate by controlling tension of the flexible substrate in an unwinding section; a plating section control portion configured to control a tension of the flexible substrate in the plating section; and the rolling section control part is configured to perform constant-torque rolling on the flexible base material in the rolling section. The tension control system of the invention considers that the radius change of the coiled flexible base material in the rolling section is small, so that the rolling section control part is constructed to perform constant-torque rolling on the flexible base material in the rolling section, and the control mode is flexible and simple.

Description

Tension control system

Technical Field

The present invention relates to a tension control system, and more particularly to a segmented tension control system for use in a production line for continuous electroplating of a flexible substrate that can be wound.

Background

In recent years, metal-clad substrates (e.g., metal-clad polyimide substrates) have been widely used for making thin, slim flexible circuit boards.

In the production of the above-mentioned metal-coated base material, as a method for forming a metal layer on the surface of the base material, for example, a metal thin layer containing nickel, chromium, nichrome or the like is first formed by a sputtering method, and then a metal layer such as a copper layer is formed on the metal thin layer so that the metal layer has good conductivity. In general, a metal conductive layer such as copper is formed on a base material by electroplating the base material with an electroplating apparatus.

The existing electroplating device completes the electroplating of a substrate by uncoiling by an uncoiler, electroplating by an electroplating bath and coiling by a coiling machine in sequence.

The base material is mostly a flexible film which is easy to generate different degrees of elongation deformation when being subjected to different tensile forces. Thus, to ensure the quality of the plating, a tension control system is employed to maintain the desired tension in the substrate.

One type of winding tension control system can be found in chinese patent application No. 201210428943.5. As shown in fig. 1, the winding tension control system mainly includes a PLC 101, an HMI 102, a tension sensor 103, and a winding tension control device 104. The PLC 101 is controllably connected to the HMI 102 and the winding tension control device 104. The tension sensor 103 detects the tension of the base material in the winding process in real time and transmits a detection signal to the winding tension control device 104. The winding tension control device 104 performs calculation according to the parameter requirements set by the PLC 101 to form a corresponding control signal, and transmits the control signal to a servo motor for driving a winding shaft or a servo motor for driving an unwinding shaft.

However, the above-described winding tension control system has the following disadvantages. Firstly, the control mode of the servo motor of the winding shaft is completely the same as that of the servo motor of the unwinding shaft, so that the control mode is not flexible enough. Second, it does not involve tension control of the substrate in the plating tank of the plating apparatus. And thirdly, the tension partition between the unwinding section and the electroplating section of the electroplating device is not involved, and the tension partition between the winding section and the electroplating section of the electroplating device is also not involved. Fourth, it is still not sophisticated or convenient enough in some of the control details.

Accordingly, there is a need for a tension control system that overcomes the above-mentioned disadvantages.

Disclosure of Invention

In order to overcome the defects of the tension control system in the prior art, the invention provides a tension control system.

The technical scheme 1 adopted by the invention for solving the technical problem is a tension control system, which comprises: an unwinding section control part configured to realize constant-tension unwinding of a flexible substrate by controlling tension of the flexible substrate in an unwinding section; a plating section control portion configured to control a tension of the flexible substrate in the plating section; and a winding section control section configured to perform constant-torque winding on the flexible base material in the winding section.

Technical solution 2. according to the tension control system of technical solution 1, the unwinding section control part includes a tension sensor, an automatic tension controller, a servo motor, and a servo driver; the tension sensor measures the tension of the flexible base material in the unreeling process and transmits a measuring signal to the automatic tension controller, the automatic tension controller converts the measuring signal into a tension value and then compares the tension value with a set tension value, when the converted tension value deviates from the set tension value, the automatic tension controller automatically outputs a signal to the servo driver, and the servo driver adjusts the rotating speed of the servo motor to realize constant tension.

Claim 3. the tension control system of claim 2, wherein the automatic tension controller is further configured to display the converted tension value and the setting parameter.

Technical scheme 4. according to the tension control system of technical scheme 3, an operation button is further arranged on the automatic tension controller, and the operation button is used for setting parameters and turning pages for viewing.

Technical scheme 5. according to the tension control system of technical scheme 3, wherein the automatic tension controller of the unwinding section control part is further configured to output a signal to the servo driver when the electroplating device for electroplating the flexible substrate stops operating so as to ensure that the servo motor has a certain torque, so that the unwinding shaft of the unwinding section is in a static state and is not easy to be shifted, or the automatic tension controller is configured to output a signal to the servo driver when the electroplating device for electroplating the flexible substrate stops so as to ensure that the servo motor is in a free state, so that the unwinding shaft of the unwinding section is in a free state.

Technical solution 6. the tension control system according to the technical solution 1, wherein the plating section control part includes a speed measuring device, a tension sensor, a servo motor, a servo driver and a motion controller to realize tension control of one or more sections of the flexible substrate in the plating section; the speed measuring device is used for measuring the real-time rotating speed of the reference roller and transmitting the real-time rotating speed to the motion controller, the motion controller calculates the linear speed according to the roller diameter setting value of the reference roller and the real-time rotating speed, and the reference rotating speed of each section of servo motor participating in control is calculated by taking the linear speed as the reference and each section of roller diameter setting value participating in control; the tension sensor detects the tension of each section on line and transmits a measurement signal to the motion controller, the motion controller processes the measurement signal and converts the measurement signal into a tension value, the tension value of each section is analyzed, the signal is output to the servo driver of each section after operation, and the servo driver of each section controls the rotating speed of the corresponding servo motor to adjust the tension of each section.

Technical solution 7. according to the tension control system of technical solution 6, the tension adjustment between each section of the flexible substrate in the electroplating section is realized by the linear velocity difference between the driving rollers driven by two servo motors.

Technical solution 8 the tension control system according to the technical solution 6, wherein the speed measuring device is installed on one of the rollers driven by the servo motor in the electroplating section, the one roller serves as the reference roller, and the running speed of the whole electroplating section is determined by the one roller.

Technical solution 9. according to the tension control system of technical solution 1, wherein the winding section control part includes a torque motor, a frequency converter, a magnetic powder clutch and a tension controller; the magnetic powder clutch is connected with a winding shaft of the winding section, the torque motor and the magnetic powder clutch adopt a mechanical connection mode of a synchronous belt, the frequency converter controls the maximum output winding torque of the torque motor, and the tension controller controls the output winding torque of the magnetic powder clutch.

The tension control system according to claim 9, wherein the tension controller is further configured to perform a constant torque setting by an operation knob on a body thereof, and is further configured to display a constant torque value.

The tension control system according to claim 1, further comprising a PLC and a touch screen communicatively connected to the PLC; the operation data and the setting parameters of the unreeling section control part, the electroplating section control part and the reeling section control part can be uploaded to the PLC, and the PLC is used for analyzing and storing the operation data and the setting parameters, and monitoring the operation data and modifying the setting parameters in real time on line through the touch screen.

Technical solution 12. according to the tension control system of the technical solution 11, wherein the touch screen can set upper and lower limit values of the operation data, and when the operation data exceeds the set upper and lower limit values, the touch screen displays that the value of the operation data exceeds the range to play a role of warning and prompting; the touch screen is also set to have a formula function, the formula function is that a set parameter set during product production is combined into a formula, and when a user selects a product to be produced on the touch screen, the formula formed by corresponding parameter setting is written into the PLC through the touch screen.

Technical solution 13. according to the tension control system of technical solution 1, tension isolating devices are disposed between the unwinding section control portion and the plating section control portion, between the winding section control portion and the plating section control portion, and/or in the plating section control portion.

Claim 14 the tension control system of claim 13, wherein the tension cut-off device comprises a squeeze roller and a drive roller cooperating with the squeeze roller, the squeeze roller and the drive roller applying a squeezing force to the flexible substrate passing therebetween.

Technical solution 15 the tension control system according to claim 14, wherein the driving roller between the unwinding section control portion and the plating section control portion is electrically non-conductive, the driving roller between the winding section control portion and the plating section control portion is electrically non-conductive, the driving roller in the plating section control portion is electrically conductive, and the pressing roller is a driven roller.

Claim 16 the tension control system according to claim 14, wherein the squeeze roller is fixed above the drive roller, and cross-sectional centers of the squeeze roller and the drive roller are on the same vertical line.

The tension control system of claim 17, wherein the wrap angle of the flexible substrate to the drive roller in the plating section control portion is greater than 90 degrees.

Claim 18. the tension control system of claim 17, wherein the wrap angle is 91 to 110 degrees.

Technical solution 19 the tension control system according to claim 15, wherein an angle of wrap of the flexible substrate with respect to the driving roller between the unwinding section control portion and the plating section control portion is greater than 90 degrees.

Claim 20 the tension control system of claim 15, wherein the wrap angle of the flexible substrate to the drive roller between the take-up section control portion and the plating section control portion is greater than or less than 90 degrees.

Compared with the prior art, the tension control system has the following beneficial effects. The tension control system of the invention considers that the radius change of the coiled flexible base material in the rolling section is small, so that the rolling section control part is constructed to perform constant-torque rolling on the flexible base material in the rolling section, and the control mode is flexible and simple. Furthermore, the tension control system of the present invention employs three-stage tension control, which facilitates tension control in each stage. Furthermore, the tension control system of the invention can be provided with tension isolating devices among the sections, thereby ensuring that the tension adjustment among the sections is not influenced mutually. In addition, the automatic tension controller is configured to have a display function and an operation button, and the touch screen is provided with an alarm prompting function and a formula function, so that the operation of a user can be more convenient.

Drawings

These and other features, aspects, and advantages of the present invention will become more readily apparent to those skilled in the art after reading the following detailed description, with reference to the accompanying drawings. For purposes of clarity, the drawings are not necessarily to scale, and certain parts may be exaggerated to show details. The same reference numbers will be used throughout the drawings to refer to the same or like parts, wherein:

FIG. 1 is a schematic diagram of a prior art winding tension control system;

FIG. 2 is a schematic view of an electroplating apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic view of a tension control system that may be used with the electroplating apparatus shown in FIG. 2, according to one embodiment of the present invention;

FIG. 4 is a schematic view of a tension abruption device according to one embodiment of the present invention; and is

FIG. 5 is a schematic view of a tension abruption device according to another embodiment of the present invention.

Detailed Description

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood by those skilled in the art that these descriptions are merely illustrative of exemplary embodiments of the present invention and are not intended to limit the scope of the present invention in any way. For example, elements or features depicted in one drawing or embodiment of the invention may be combined with other elements or features shown in one or more other drawings or embodiments.

Referring to fig. 2, a schematic diagram of an electroplating apparatus 100 according to an embodiment of the invention is shown. The electroplating device 100 mainly comprises an unreeling section 1, an electroplating section 3 and a reeling section 5. This section of unreeling 1 is including unreeling axle 11 and unreeling tension sensor 12, should unreel axle 11 can with unreel servo motor and be connected. The plating section 3 includes: squeeze

rollers

31E, 31A, 31B, 31C, and 31D, a first drive roller 32 of the plating section 3, a driven set of conductive rollers 33A, a driven set of conductive rollers 33B, and a driven set of conductive rollers 33C,

tension sensors

34A, 34B, and 34C, and a last drive roller 35 of the plating section 3. The squeeze roller 31D may be provided with a rotary encoder to measure the rotation speed. A section of the substrate 7 adjacent to each driven set of

conductive rollers

33A, 33B or 33C will be electroplated in the electroplating bath of the electroplating section 3. Of course, it is also possible to provide a plurality of such sets of conductive rollers in the plating section 3 to perform plating by dividing the substrate 7 into a plurality of sections (a portion of the substrate 7 adjacent to each set of conductive rollers is a section). The winding section 5 comprises a winding shaft 51, and the winding shaft 51 can be connected with a winding magnetic powder clutch. The substrate 7 is sequentially subjected to the unreeling section 1, the electroplating section 3 and the reeling section 5 to complete electroplating on the substrate 7. The substrate 7 may be mainly an organic polymer film, which may include one or more of PI, PTO, PC, PSU, PES, PPS, PS, PE, PP, PEI, PTFE, PEEK, PA, PET, PEN, LCP, and PPA.

Referring to fig. 3, an overall schematic diagram of a tension control system 200 according to an embodiment of the invention is shown, wherein the tension control system 200 can be used in the electroplating apparatus 100 shown in fig. 2. The tension control system 200 can be divided into three sections: an unwinding section control part 210, a plating section control part 230, and a winding section control part 250. All three parts are communicatively connected to a PLC (programmable logic controller) 271, which PLC271 is in turn communicatively connected to a touch screen 272. These three sections will be described separately below.

First, unreeling section control part 210

The unwinding section control part 210 may include a tension sensor 211 (i.e., the tension sensor 12 shown in fig. 2), an automatic tension controller 212, a servo motor 213, and a servo driver 214, and implements constant-tension unwinding of the substrate 7 (shown in fig. 2) therethrough. The servo motor 213 may be provided with a decelerator for reducing a rotation speed, increasing a torque, etc.

The unwinding section control part 210 can set the unwinding tension suitable for coating according to the production process requirement, and writes the unwinding tension into the automatic tension controller 212 through the operation of the touch screen 272 by the PLC 271.

During unwinding, the tension sensor 211 measures the tension of the substrate 7 in the unwinding section control part 210 and transmits a measurement signal to the automatic tension controller 212. The automatic tension controller 212 converts the measured signal into a tension value and compares the tension value with a set tension value, and when the measured value deviates from the set value, the automatic tension controller automatically outputs a signal to the servo driver 214, and the servo driver 214 adjusts the rotation speed of the servo motor 213 to realize the constant tension of the substrate 7.

The tension data and setting parameters of the automatic tension controller 212 may be uploaded to the PLC 271. The touch screen 272 can read tension data and setup parameters in the PLC 271. In addition, the automatic tension controller 212 may be further configured to display the measured tension value and the setting parameters, and the automatic tension controller 212 may further be provided with operation buttons such as buttons for setting the parameters and turning pages for viewing.

The touch screen 272 can implement the modification of the parameters of the automatic tension controller 212 by writing to the PLC 271. The touch screen 272 may also provide for protection from writing by the automatic tension controller 212.

The unwinding section control portion 210 may maintain the tension at a fixed value when the operation of the plating apparatus 100 for plating the substrate 7 is stopped.

The tension sensor 211 of the unwinding section control portion 210 is used for measuring the tension of the substrate 7 in the unwinding section control portion 210, and the tension adjustment of the unwinding section control portion 210 is finally realized by adjusting the rotation speed of the unwinding shaft 11 (see fig. 2).

Second, plating section control part 230

The plating section control part 230 may include a speed measuring device (e.g., a rotary encoder 231), one or more tension sensors 232 (i.e., the

tension sensors

34A, 34B, and 34C shown in fig. 2), one or more servo motors 233, one or more servo drivers 234, and a motion controller 235, and realize tension control of one or more sections of the base material 7 therethrough. The servo motor 233 may be provided with a decelerator for reducing a rotation speed, increasing a torque, etc.

The plating stage control section 230 may perform adjustment control of the tension of each stage of the base material 7, or may perform tension adjustment control of a plurality of stages as required.

The tension adjustment between each section can be realized through the linear speed difference between the driving rollers driven by the two servo motors, namely the tension control of each section can be jointly controlled by two adjacent motors.

Each set of conducting rollers can be two conducting rollers (e.g., one set of conducting rollers 33A shown in fig. 2), and the rotation of the two conducting rollers is realized by a synchronous belt driven by a servo motor 233.

The first and last servo motors 233 of the plating section control part 230 directly drive only one roll, wherein the last roll may be equipped with a speed measuring device (e.g., a rotary encoder 231) that can measure the rotational speed of the roll, and this last roll may be referred to as a reference roll. The running speed of the entire plating section control part 230 is determined by the roller. Of course, any one of the rolls may be used as a reference roll, the operation speed of the plating section control part 230 is determined by the reference roll, the rotation speed adjustment of the roll is automatically performed by a servo system, the rotation speed of the reference roll is preset by the system, the speed of the reference roll is a reference for the adjustment of the other rolls, and the speed of the reference roll may be measured by the rotary encoder 231. The roll diameter of each set of rolls may be set into the motion controller 235. The speed measuring device of the reference roller measures the real-time rotating speed of the reference roller and then transmits the measured real-time rotating speed to the motion controller 235, the motion controller 235 calculates the linear speed according to the rotating speed and the roller diameter set value, and the linear speed is used as the reference and each roller diameter set value participating in control is used for calculating the reference rotating speed of each servo motor participating in control. The reading and setting of the rotation speed of the reference roller can be realized by the touch screen 272, and the reading and setting of the parameters of the touch screen 272 are realized by the PLC271 and the motion controller 235.

The reading and setting of the tension value of each stage of the plating stage control part 230 can also be realized by the touch screen 272, and the reading and setting of the touch screen 272 are realized by the PLC271 to the motion controller 235. The tension settings for each section of the plating section control section 230 may be the same or different, and each tension setting may be set via the touch screen 272. After the set value of the touch screen 272 is written in the PLC271, the PLC271 rewrites the set value in the motion controller 235. The plating section control part 230 has at least one tension sensor 232 between each section capable of tension adjustment, measures the tension of the section in real time, and transmits the measurement signal to the motion controller 235.

The motion controller 235 obtains the tension of each section through the measurement of the tension sensor 232, compares the measured tension value with the set tension value, and transmits an adjusting signal to the servo driver 234 of each section participating in the tension adjustment of the electroplating section control part 230 through certain calculation by taking the reference rotating speed as the reference, and the servo driver 234 adjusts the rotating speed of the servo motor 233 connected with the servo driver 234 to realize the constant tension. The motion controller 235 can have data collection and operation functions, and can transmit collected data and specified data in operation to the PLC271, and then the PLC271 communicates with the touch screen 272 to display the data on the touch screen 272.

The touch screen 272 can read the tension setting value of each segment in the motion controller 235 through the PLC271, and can also be set. The touch screen 272 has a recipe function, and can write a preset tension setting value into the motion controller 235 according to the process production requirements.

The tension separation of the unwinding section control portion 210 and the plating section control portion 230 can be achieved by using a squeeze roller in cooperation with a driving roller, as described in detail below with reference to fig. 4.

Third, a winding section control part 250

The winding section control part 250 may include a torque motor 251, a frequency converter 252, a magnetic particle clutch 253, and a tension controller 254, and realizes constant torque winding of the substrate 7 therethrough.

Data and parameters of the frequency converter 252 and the tension controller 254 can be read and written by the PLC 271. The touch screen 272 can read data and parameters in the PLC271 about the transducer 252 and tension controller 254 and can write parameters. The winding section control part 250 can set a proper winding constant torque according to the production process requirements, and can write the winding constant torque into the tension controller 254 through the operation of the touch screen 272 by the PLC 271.

The tension controller 254 may also perform constant torque setting by using an operation knob such as a knob or a button on the body thereof, and has a function of displaying a constant torque value. The constant torque data and set-up parameters of the tension controller 254 can be uploaded to the PLC 271. The touch screen 272 can read the constant torque data and set parameters in the PLC 271.

The winding shaft 51 (see fig. 2) of the winding section control part 250 is driven by a magnetic powder clutch 253 and is wound by constant torque, and the torque can be manually adjusted by an operation button or a touch screen 272 on the tension controller 254.

The tension isolation of the take-up section control section 250 and the plating section control section 230 is achieved by means of squeeze rollers in cooperation with drive rollers, as described in detail below with respect to fig. 4.

As shown in fig. 3, the control data of the three portions are uploaded to the PLC271 via the respective communication cables, and the PLC271 may transmit the control command to the control portion of each segment via the communication cable. The touch screen 272 and the PLC271 can communicate in an Ethernet communication mode, the touch screen 272 can display data of the interior of the PLC271 on the touch screen 272 according to production process requirements, the touch screen 272 can also operate to send a control command to the PLC271, and the command is sent to a certain section of designated controller after being processed by the PLC 271.

Referring to fig. 2 and 3 together, when the plating apparatus 100 and the tension control system 200 of the present invention are operated, the tension sensor 211 of the unwinding section control part 210 detects the film surface tension of the substrate 7 on-line, transmits a measurement signal to the automatic tension controller 212, and the automatic tension controller 212 processes the measurement signal, converts the signal into a tension value, and compares the tension value with a set desired tension value. According to the difference, the automatic tension controller 212 outputs a signal to the servo driver 214, and the servo driver 214 controls the rotation speed of the servo motor to achieve the purpose of tension adjustment. Only the automatic tension controller 212 in the unwinding section control part 210 can communicate with the PLC271, and the PLC271 can read and write parameters such as a set tension value of the automatic tension controller 212, and data such as an on-line tension value in the automatic tension controller 212 and a signal value output to the servo driver 214. The PLC271 can display the read/write parameters and the read data on the touch screen 272, and the touch screen 272 can also set the parameters and transmit the parameters to the PLC271, and the PLC271 writes the set parameters into the automatic tension controller 212.

The automatic tension controller 212 of the unwinding section control portion 210 can output a signal to the servo driver 214 when the electroplating apparatus 100 for electroplating the substrate 7 stops operating to ensure that the servo motor 213 has a certain torque, so that the unwinding shaft 11 is in a static state and is not easy to be shifted. Of course, it is also possible to output a signal to the servo driver 214 when the system is stopped to ensure that the servo motor 213 is in a free state, so that the unreeling shaft 11 can be freely rotated in a free state. The automatic tension controller 212 may also have a display operation function, may display on-line tension values and parameters, may operate setting parameters through operation buttons such as buttons, and the like. The automatic tension controller 212 may also have an alarm function, and may be configured to alarm when the on-line tension value exceeds a set range or to alarm when an adjustment signal is output beyond a set range.

The plating section control part 230 may be divided into a plurality of sections, the tension of each section is detected by a tension sensor 232, and the driving of each section of the driving roller is completed by a corresponding servo motor 233. Each servo motor 233 is controlled by a corresponding servo driver 234, the control center of the control part of the whole electroplating section control part 230 is a motion controller 235, each servo driver 234 is connected with the motion controller 235 through a communication cable or a standard signal line, and each tension sensor 232 is connected with the motion controller 235 through a standard signal line.

The tension sensor 232 detects the tension of each section on line and transmits a measurement signal to the motion controller 235, the motion controller 235 converts the measurement signal into a tension value after processing, analyzes the tension value of each section, outputs a signal to the servo driver 234 of each section after operation, and the servo driver 234 controls the rotating speed of the servo motor 233 to achieve the purpose of adjusting the tension of each section.

The motion controller 235 and the PLC271 adopt a communication mode to exchange data, the motion controller 235 uploads the tension value and the controlled rotating speed value to the PLC271, and the PLC271 transmits the data to the touch screen 272 for display. The touch screen 272 is operable to set a desired tension value for each stage of the plating stage control part 230, which is transmitted to the motion controller 235 via the PLC271, and the motion controller 235 adjusts the tension of each stage according to the set value.

When the tension adjustment is out of control, the motion controller 235 uploads a signal to the PLC271, and after the PLC271 receives the out of control signal, the operations of the unwinding section control part 210, the plating section control part 230, and the winding section control part 250 are stopped, so that the entire plating line is in a stop state and an alarm signal is sent to the touch screen 272.

The magnetic powder clutch 253 of the winding section control part 250 is connected with the winding shaft 51, the torque motor 251 and the magnetic powder clutch 253 adopt a mechanical connection mode of a synchronous belt, the frequency converter 252 controls the maximum output winding torque of the torque motor 251, and the tension controller 254 controls the output winding torque of the magnetic powder clutch 253.

The tension controller 254 and the PLC271 adopt a communication mode to transmit data, and the frequency converter 252 and the PLC271 adopt a standard signal line or a communication mode to transmit data. Data among the PLC271, the tension controller 254 and the frequency converter 252 can be displayed through the touch screen 272, and the touch screen 272 can also transmit parameters required to be set to the frequency converter 252 and the tension controller 254 through the PLC 271. The output of the tension controller 254, the start and stop of the frequency converter 252, and the frequency of the frequency converter 252 may be set on the touch screen 272 according to process requirements. The transducer 252 may have an operation panel thereon for setting itself and displaying various parameters and data. The tension controller 254 may have a display function by adjusting an output of the tension controller 254 using an operation button such as a button or a knob.

The PLC271 is the control center of the entire segmental tension control system 200, can read data and parameters related to segmental tension control, and has data operation processing capability, the operation processing of the data is performed according to an algorithm programmed by a user program, and the user can modify or optimize the program according to process requirements.

The data exchange between the touch screen 272 and the PLC271 is implemented in a communication mode, the communication mode may be 485 or ethernet, and the touch screen 272 may read and write data or only read data according to requirements. The touch screen 272 may have display operating functions, store data, alarm and recipe functions. The touch screen 272 can display data to be read on the screen and can operate on the data to be written. The touch screen 272 may select the time for data storage according to user settings and search for data within a certain range. The user can set the upper and lower limit values of the specified data on the touch screen 272, and when the data exceeds the set upper and lower limit values, the touch screen 272 displays that the value exceeds the range in some form to play a role of warning. The formula function means that a user can assemble setting parameters during production of a product into a formula according to the daily production condition, and the formula is different if the setting parameters used by different products are different. The user can select the product to be produced on the touch screen 272, and the formula composed of the corresponding parameter setting is written into the PLC271, so that the burden of memorizing different setting parameters by the user is reduced, the setting operation error is avoided, and the like.

Referring also to fig. 4, which is a schematic view of a tension cut-off device according to an embodiment of the present invention, it is shown that the tension cut-off between the unwinding section control part 210 and the plating section control part 230 can be implemented by using the pressing roller 31E in cooperation with the driving roller 32, which ensures that the tension of the unwinding section control part 210 is not affected by the tension adjustment of the plating section control part 230. The tension cut-off drives only one non-conductive drive roller 32, the other squeeze roller 31E being driven. The position of the squeeze roller 31E is fixed above the drive roller 32, and the centers of the cross sections of the two rollers are on the same vertical line. The wrap angle β of the substrate 7 to the drive roller 32 (i.e., the angle between the radius 321 and the radius 322 of the drive roller 32 perpendicular to the substrate 7) is greater than 90 degrees. Both the driving roller 32 and the pressing roller 31E may be rubber rollers.

Referring again to fig. 2, the tension isolation between the winding section control section 250 and the plating section control section 230 is also achieved by using the squeeze roller 31D in cooperation with the driving roller 35, which ensures that the winding tension is not affected by the tension adjustment of the plating section control section 230, wherein the wrap angle of the substrate 7 to the driving roller 35 may be less than 90 degrees or greater than 90 degrees. The

squeeze rollers

31A, 31B, 31C further cut off the tension of the plating section control part 230 and divide it into a plurality of sections. How many sections the tension of the plating section control part 230 is divided into is determined according to the requirements of the plating process, and may be divided into one or more sections.

Referring to fig. 5, which is a schematic view of a tension cut-off device according to another embodiment of the present invention, it is shown that one of the tension cuts-off in the plating section controlling part 230 can be implemented by using the pressing roll 31A in cooperation with one of the conductive rolls in the conductive roll group 33A. The tension cut-off device drives only one conductive roll, and the squeeze roll 31A is driven. The position of the squeeze roll 31A is fixed above the conductive roll of the conductive roll group 33A, and the centers of the cross sections of the two rolls are on the same vertical line. The substrate 7 is moved linearly between the squeeze roll 31A and this conductive roll, and the substrate 7 may be at an angle α with the horizontal diameter of the conductive roll, which may be less than 90 degrees, preferably 70-89 degrees. The position of the squeeze roller 31A is fixed above the conductive roller, and the centers of the cross sections of the two rollers are on the same vertical line. The wrap angle β of the substrate 7 to this conductive roller (i.e. the angle between the radius 331 and the radius 332 of the conductive roller perpendicular to the substrate 7) is greater than 90 degrees, preferably slightly greater than 90 degrees (e.g. 91 to 110 degrees). The conductive roller may be a stainless steel roller and the squeeze roller 31A may be a rubber roller.

The

pressing rollers

31E, 31A, 31B, 31C, 31D of the plating section controlling part 230 divide the plating section controlling part 230 into a plurality of sections, each of which can be set to a different tension value to adjust. Each segment is fitted with a tension sensor 232 (i.e.,

tension sensors

34A, 34B, and 34C shown in fig. 2), and the

tension sensors

34A, 34B, and 34C measure the tension of each segment of the plating segment control section 230, respectively. The adjustment of the tension of each segment is achieved by using the speed difference between the driving rollers before and after the tension sensor 232. However, the speed of the drive roller 35 is set manually, and once a speed is set, the drive roller 35 will maintain the running speed during operation. The driving roller 35 is a reference roller of the operation speed of the plating section control section 230, and the speeds of the other rollers are adjusted based on this to achieve a difference in the front and rear driving roller speeds to ensure the achievement of the tension. The constant speed of the driving roller 35 also ensures the electroplating operation speed of the film of the electroplating section control part 230, thereby meeting the process requirement.

The foregoing description merely refers to preferred embodiments of the present invention. However, the invention is not limited to the specific embodiments described herein. Those skilled in the art will readily appreciate that various obvious modifications, adaptations, and alternatives may be made to the embodiments to adapt them to particular situations without departing from the spirit of the present invention. Indeed, the scope of the invention is defined by the claims and may include other examples that may occur to those skilled in the art. Such other examples are intended to be within the scope of the claims if they have structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal languages of the claims.

Claims

1. A tension control system comprising:

an unwinding section control part configured to realize constant-tension unwinding of a flexible substrate by controlling tension of the flexible substrate in an unwinding section;

a plating section control portion configured to control a tension of the flexible substrate in the plating section; and

a winding section control section configured to perform constant-torque winding on the flexible base material in the winding section;

tension isolating devices are arranged between the unwinding section control part and the electroplating section control part, between the winding section control part and the electroplating section control part and in the electroplating section control part; and

one tension partition in the electroplating section control part is realized by matching a squeezing roller with one conductive roller in a conductive roller group, wherein the conductive roller group comprises two conductive rollers, and the two conductive rollers are driven by a servo motor to synchronously rotate.

2. The tension control system of claim 1, wherein the unwinding section control part comprises a tension sensor, an automatic tension controller, a servo motor and a servo driver; the tension sensor measures the tension of the flexible base material in the unreeling process and transmits a measurement signal to the automatic tension controller, the automatic tension controller converts the measurement signal into a tension value and then compares the tension value with a set tension value, when the converted tension value deviates from the set tension value, the automatic tension controller automatically outputs a signal to the servo driver, and the servo driver adjusts the rotating speed of the servo motor to realize constant tension.

3. The tension control system of claim 2, wherein the automatic tension controller is further configured to display the converted tension value and the setting parameter.

4. The tension control system according to claim 3, wherein the automatic tension controller is further provided with an operation button, and the operation button is used for setting parameters and page turning and viewing.

5. The tension control system as claimed in claim 3, wherein the automatic tension controller of the unwinding section control part is further configured to output a signal to the servo driver when the electroplating device for electroplating the flexible substrate stops operating to ensure that the servo motor has a certain torque to make the unwinding shaft of the unwinding section in a stationary state and not easy to be shifted, or the automatic tension controller is configured to output a signal to the servo driver when the electroplating device for electroplating the flexible substrate stops to ensure that the servo motor is in a free state to make the unwinding shaft of the unwinding section in a free state.

6. The tension control system of claim 1, wherein the plating section control section comprises a speed measurement device, a tension sensor, a servo motor, a servo driver, and a motion controller to effect tension control of one or more sections of the flexible substrate in the plating section; the speed measuring device is used for measuring the real-time rotating speed of the reference roller and transmitting the real-time rotating speed to the motion controller, the motion controller calculates the linear speed according to the roller diameter setting value of the reference roller and the real-time rotating speed, and the reference rotating speed of each section of servo motor participating in control is calculated by taking the linear speed as the reference and each section of roller diameter setting value participating in control; the tension sensor detects the tension of each section on line and transmits a measurement signal to the motion controller, the motion controller processes the measurement signal and converts the measurement signal into a tension value, the tension value of each section is analyzed, the signal is output to the servo driver of each section after operation, and the servo driver of each section controls the rotating speed of the corresponding servo motor to adjust the tension of each section.

7. The tension control system of claim 6, wherein the tension adjustment between each section of flexible substrate in the plating section is achieved by a linear velocity difference between two servo motor driven drive rollers.

8. The tension control system according to claim 6, wherein the speed measuring device is installed on one of the rollers driven by the servo motor in the electroplating section, the one roller serves as the reference roller, and the running speed of the whole electroplating section is determined by the one roller.

9. The tension control system according to claim 1, wherein the winding section control part includes a torque motor, a frequency converter, a magnetic particle clutch and a tension controller; the magnetic powder clutch is connected with a winding shaft of the winding section, the torque motor and the magnetic powder clutch adopt a mechanical connection mode of a synchronous belt, the frequency converter controls the maximum output winding torque of the torque motor, and the tension controller controls the output winding torque of the magnetic powder clutch.

10. The tension control system of claim 9, wherein the tension controller is further configured to perform a constant torque setting via an operating knob on its body, and further configured to display a constant torque value.

11. The tension control system of claim 1, further comprising a PLC and a touch screen communicatively coupled to the PLC; the operation data and the setting parameters of the unreeling section control part, the electroplating section control part and the reeling section control part can be uploaded to the PLC, and the PLC is used for analyzing and storing the operation data and the setting parameters, and monitoring the operation data and modifying the setting parameters in real time on line through the touch screen.

12. The tension control system according to claim 11, wherein the touch screen can set upper and lower limit values of the operation data, and when the operation data exceeds the set upper and lower limit values, the touch screen displays that the value of the operation data exceeds the range so as to play a role of alarm prompt; the touch screen is also set to have a formula function, the formula function is that a set parameter set during product production is combined into a formula, and when a user selects a product to be produced on the touch screen, the formula formed by corresponding parameter setting is written into the PLC through the touch screen.

13. The tension control system of claim 1, wherein the tension cut-off device comprises a squeeze roller and a drive roller cooperating with the squeeze roller, the squeeze roller and the drive roller applying a squeezing force to the flexible substrate passing therebetween.

14. The tension control system of claim 13, wherein the drive roller between the unwind station control section and the plating station control section is non-conductive, the drive roller between the wind-up station control section and the plating station control section is non-conductive, the drive roller in the plating station control section is conductive, and the squeegee roller is a driven roller.

15. The tension control system of claim 13, wherein the squeeze roller is fixed above the drive roller, and the cross-sectional centers of the squeeze roller and the drive roller are on the same vertical line.

16. The tension control system of claim 14, wherein the wrap angle of the flexible substrate to the drive roller in the plating section control portion is greater than 90 degrees.

17. The tension control system of claim 16, wherein the wrap angle is 91 degrees to 110 degrees.

18. The tension control system of claim 14, wherein the wrap angle of the flexible substrate to the drive roller between the unwind section control portion and the plating section control portion is greater than 90 degrees.

19. The tension control system of claim 14, wherein the wrap angle of the flexible substrate to the drive roller between the take-up section control portion and the plating section control portion is greater than or less than 90 degrees.