WO2020206692A1

WO2020206692A1 - Strip machining device and method

Info

Publication number: WO2020206692A1
Application number: PCT/CN2019/082508
Authority: WO
Inventors: 刁怀乐; 邓波; 萨利姆贝尼·马西莫
Original assignee: Abb 瑞士股份有限公司; 刁怀乐; 邓波; 萨利姆贝尼·马西莫
Priority date: 2019-04-12
Filing date: 2019-04-12
Publication date: 2020-10-15
Also published as: CN113710600B; CN113710600A; WO2020206692A8

Abstract

Embodiments of the present disclosure relate to a strip machining device and method. The device comprises an actuator configured to apply tension to a strip and a driving assembly coupled to the actuator. The driving assembly comprises a first motor and a second motor coaxially disposed. The first motor is disposed upstream of the second motor, and has a rated power greater than the second motor. The device further comprises a controller coupled to the driving assembly, and the controller is configured to determine, on the basis of target tension to be applied to the strip, respective output power distribution of the first motor and the second motor. Both the first motor and the second motor are configured to provide a driving force to the actuator according to the output power distribution so as to apply target tension to the strip on the actuator. In this way, an uninterrupted switching of operation modes of the driving assembly during operation of the driving assembly is achieved on the basis of the target tension on the strip, thereby achieving precise control of tension on strips of different thicknesses and specifications.

Description

Equipment and method for processing strip

Technical field

The embodiments of the present disclosure generally relate to electromechanical equipment, and more specifically, the embodiments of the present disclosure relate to an equipment and method for processing strips.

Background technique

In industrial production, because the strips have different thicknesses, different tensions need to be applied when processing the strips, which requires precise control of the tension. In the traditional way, the above-mentioned tension control is often realized by a motor and a switchable gear box with different stages.

However, the structure of the multi-stage gearbox is complicated and expensive. Due to the changing movement inside the multi-stage gear, higher operating costs must be considered for higher maintenance. The multi-stage gearbox can only be switched when the motor is stopped. Release the tension on the strip first, and then change different gears. In the process of normal work, this will lead to a decrease in productivity. Even if the gear selection is incorrect, it is not allowed to switch again during processing. If the tension is too small, it cannot meet the requirements of strip processing, and if the tension is too large, the strip may break.

Summary of the invention

In order to at least partially solve the problems of the prior art and other potential problems, a device for processing strips is provided.

In the first aspect of the present disclosure, there is provided an apparatus for processing strips. The device includes: an execution part configured to apply tension to the strip and a drive assembly coupled to the execution part. The drive assembly includes a first motor and a second motor that are coaxially arranged, and the first motor is arranged on the first motor. The second motor is upstream and has a higher rated power than the second motor. The device also includes a controller coupled to the drive assembly, configured to determine the output torque distribution of each of the first motor and the second motor based on the target tension to be applied to the strip, the first motor and the second motor being each It is configured to provide driving force to the actuator according to the output torque distribution to apply target tension to the strip on the actuator.

The equipment for processing strips proposed in the first aspect includes a drive assembly composed of two motors with different rated powers, thereby being able to apply different targets to the strips by controlling the output torque distribution of the two motors respectively Tension, thereby improving the tension control range of the strip, in order to achieve precise control of the tension of the strip with different thickness specifications.

In some embodiments, the execution part includes a take-up roller, which is used to take up the strip and is arranged coaxially with the first motor and the second motor. In some embodiments, the execution member includes a plurality of tension rollers for generating tension acting on the strip by simultaneously applying friction to the strip passing on the plurality of tension rollers.

Since the output torque of the first motor and the second motor in the drive assembly can be separately controlled, the driving force of the drive assembly can be applied to the execution part according to the target tension, thereby simplifying the strip processing equipment Structure.

In some embodiments, the device further includes an operation mode determination module configured to determine the operation mode of the drive assembly based on the target tension and the rated power of the first motor and the second motor. This mode of operation includes: a first mode in which the target tension is applied by the first motor alone; a second mode in which the target tension is applied by the second motor alone; and a third mode in which the target tension is shared by the first motor and the second motor Apply. The device also includes a switching parameter determination module configured to determine the operation mode switching parameters of the first motor and the second motor based on the operation mode. In addition, the device also includes a regulator. The regulator is configured to adjust the output torque of the first motor and the second motor based on the determined operating mode and mode switching parameters, so that the drive assembly can be switched to the first mode, the second mode, and the Said one of the third mode.

By determining the operating mode and operating mode switching parameters of the drive assembly, the drive assembly can be switched among the above three modes without shaking. On the one hand, the tension control under the running state of the drive assembly is realized, and on the other hand, the switching stability is guaranteed. This is especially important for thinner strips, such as foils. Because the jitter during switching may cause damage to the strip.

In some embodiments, the device further includes a loss acquisition module configured to acquire the total loss of the driving component. The device further includes a loss distribution determination module configured to determine the first loss of the first motor and the second loss of the second motor based on the total loss value and the rated power of the first motor and the second motor. In addition, the device also includes a loss compensator. The loss compensator is configured to perform respective loss compensation for the first motor and the second motor based on the determined first loss and second loss.

Since the rated powers of the first motor and the second motor are different and the power is maintained in various operation modes of the drive assembly, losses, such as inertial losses, are incurred in the process of providing driving force. By compensating the respective losses based on the rated power of the first motor and the second motor, it is possible to improve the control accuracy of the tension in the steady state and variable speed dynamics, and increase the first and second motors in the first and second modes. The tension control range and the stability of the running state in the second mode and the third mode.

In some embodiments, the device further includes a receiver coupled to the peripheral device and configured to receive parameters associated with the target tension from the peripheral device. In addition, the device further includes a transmitter that is coupled to the drive assembly and is configured to transmit the determined output torque and loss compensation of the first motor and the second motor to the drive assembly.

Through the above-mentioned transmitter and transceiver, the device can quickly implement tension control according to the target tension and the drive assembly can immediately apply corresponding driving force based on the tension control.

In some embodiments, the controller includes an operation mode determination module configured to determine the operation mode of the drive assembly based on the target tension and the rated power of the first motor and the second motor. This mode of operation includes: a first mode, in which the target tension is applied by the first motor alone; a second mode, in which the target tension is applied by the second motor alone; and a third mode, in which the target tension is shared by the first motor Apply; the switching parameter determination module is configured to determine the operation mode switching parameters of the first motor and the second motor based on the operation mode. In addition, the controller also includes a regulator. The regulator is configured to adjust the output torque of the first motor and the second motor based on the determined operating mode and mode switching parameters, so that the drive assembly can be switched to the first mode, the second mode, and the Said one of the third mode. The controller further includes a loss obtaining module configured to obtain the total loss of the drive component; a loss distribution determining module configured to determine the power of the first motor based on the total loss value and the rated power of the first motor and the second motor The first loss and the second loss of the second motor. It also includes a loss compensator. The loss compensator is configured to perform respective loss compensation for the first motor and the second motor based on the determined first loss and second loss. The controller also includes a receiver that is coupled to the peripheral device and is configured to receive parameters associated with the target tension from the peripheral device; and a transmitter that is coupled to the drive assembly and is configured to transmit the target tension to the drive assembly. Determine the respective output torque and loss compensation of the first motor and the second motor.

In a second aspect of the present disclosure, a method for processing a strip is provided. The method is performed by the apparatus for processing strips as described in the first aspect.

The content of the invention is provided to introduce the choice of concepts in a simplified form, which will be further described in the following specific embodiments. The content of the invention is not intended to identify the key features or main features of the present disclosure, nor is it intended to limit the scope of the present disclosure.

Description of the drawings

By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the embodiments of the present disclosure will become easier to understand. In the drawings, several embodiments of the present disclosure are shown by way of example and not limitation, in which:

Fig. 1 shows a schematic diagram of an apparatus for processing a strip according to an embodiment of the present disclosure;

Fig. 2 shows a schematic diagram of an apparatus for processing a strip according to an embodiment of the present disclosure.

In the various drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

detailed description

Hereinafter, embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided for Have a more thorough and complete understanding of this disclosure. It should be understood that the drawings and embodiments of the present disclosure are only used for exemplary purposes and are not used to limit the protection scope of the present disclosure.

The term "including" and its variants as used herein means open-ended inclusion, that is, "including but not limited to". Unless specifically stated otherwise, the term "or" means "and/or". The term "based on" means "based at least in part on." The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment." The term "another embodiment" means "at least one additional embodiment." The terms "first", "second", etc. may refer to different or the same objects. The following may also include other explicit and implicit definitions.

As mentioned above, in the process of processing the strip, different tensions need to be applied to the strip according to factors such as the thickness and material of the strip. The traditional method uses a single motor and a switchable gear box to achieve the above tension control. However, the maintenance cost of the gearbox is expensive, and the change of the applied tension can only be realized by switching the gear of the gearbox when the motor is not running. If the set gear cannot be adapted to the required tension of the strip, the motor is running In this case, the application of tension cannot be controlled.

In order to reduce the number of gearbox stages, it is considered that dual motors connected to each other through a clutch are used in the equipment for processing the strip to provide corresponding tension for the strip. In operation, unlike changing the gearbox stages in the case of a single motor, this solution uses a clutch to couple or disconnect one of the motors to provide different tensions. However, this solution still needs to cut off the power supply of the motor and release the tension to achieve tension control. In addition, since these two motors have the same rated power and characteristics, the range of tension control is limited.

Using two motors with different powers and characteristics to achieve tension control can achieve an extended tension control range. If the motor with a smaller power is placed upstream of the motor with a larger power and a clutch is used to achieve the The coupling and decoupling between small motors also need to interrupt the operation of the drive components. In addition, since the motor shaft of the small motor needs to carry the torque of the two motors, the requirements for the motor shaft will increase. Accordingly, the manufacturing cost of small motors will increase significantly.

The embodiment of the present disclosure provides a device for processing a strip material, which includes a drive assembly that is implemented by two motors with different characteristics, and can switch between different operation modes without stopping the drive assembly , In order to provide the different tension required for processing the strip.

Fig. 1 shows a schematic diagram of an apparatus for processing a strip according to an embodiment of the present disclosure. As shown in FIG. 1, the device 100 includes an execution part 110 for applying tension to the strip 111. The device 100 also includes a drive assembly 120 coupled to the execution part 110. The driving assembly 120 includes a first motor 121 and a second motor 122. The first motor 121 and the second motor 122 are arranged coaxially with each other. The first motor 121 is arranged upstream of the second motor 122, that is, a position closer to the winding member 110 relative to the second motor 122, and the first motor 121 is configured to have a higher rated power than the second motor 122.

The device 100 shown in FIG. 1 also includes a controller 130. The controller 130 is coupled to the drive assembly 120 and is arranged to determine the output torque distribution of the first motor 121 and the second motor 122 based on the target tension to be applied to the strip 111.

In some embodiments, the target tension to be applied to the strip 111 may be based on the characteristic parameters of the execution component and the characteristics of the strip, such as the material and thickness of the strip, and is given by the tension parameter model stored in the controller 130 . In addition, the target tension to be applied to the strip 111 may be provided by the output of the peripheral device 140. The peripheral device 140 may be a human-computer interaction interface, for example.

The controller 130 can provide the determined output torque distribution of the first motor 121 and the second motor 122 to the drive assembly 120. The first motor 121 and the second motor 122 are each configured to provide a driving force to the execution member 110 according to the output torque distribution from the controller to apply a target tension to the strip on the execution member 110.

Through the drive assembly 120 composed of two motors with different rated powers, also called asymmetric dual motors, it is possible to apply different target tensions to the strip 111 by separately controlling the output torque distribution of the two motors, thereby improving The tension control range of the strip in order to achieve precise control of the tension of the strip.

In addition, there is no need to arrange a clutch to decouple the first electric machine and the second electric machine coupled in series. During normal operation, the two motors are always energized, so as to realize the free switching of the operating mode of the drive components without stopping.

In some embodiments, the execution part 110 can be implemented as a take-up roller (for example, as shown in FIG. 1), which is used to take up the strip 111 and is arranged to be connected to the first motor 121 and the first motor 121 The two motors 122 are coaxial. In some embodiments, the execution part 110 may also be realized by a plurality of tension rollers. These tension rollers can work together on the strip passing through the tension roller, for example, each provide corresponding friction to apply tension to the strip. Here, since the output torque of the first motor 121 and the second motor 122 in the driving assembly 120 can be separately controlled, the driving force of the driving assembly 120 can be applied to the take-up roller according to the target tension. The structure of the strip processing equipment 100 is simplified.

In some embodiments, a gear box is also arranged between the execution part 110 and the first motor 121.

FIG. 2 shows a schematic diagram of an apparatus for processing a strip according to another embodiment of the present disclosure. It can be seen in FIG. 2 that the arrangement of the execution component 110 and the driving assembly 120 is the same as that shown in FIG. 1, and will not be repeated here.

In FIG. 2, the device 100 for processing strip material may include a receiver 137 which is coupled to a peripheral device 140. The receiver 137 may be configured to receive parameters from the peripheral device 140. The parameter may be, for example, a tension model parameter, a measurement parameter associated with the operating state of the device 100, and so on.

In some embodiments, the receiver 137 can be coupled to the operation mode determination module 131. The operation mode determination module 131 may be configured to determine the operation mode of the driving assembly 120 based on the received target tension and the rated power of the first motor 121 and the second motor 122.

In some embodiments, the operation mode may include a first mode, a second mode, and a third mode. In the first mode, the target tension is applied by the first motor 121 alone. In the second mode, the target tension is applied by the second motor 122 alone. In the third mode, the target tension is applied by the first motor 121 and the second motor 122 together.

It should be noted that, as mentioned above and mentioned, the first motor 121 and the second motor 122 are both in the energized state regardless of the operating mode of the drive assembly. Therefore, even in the first mode and the second mode, the target tension is only applied by the first motor 121 or the second motor 122, and it should be understood that the driving force caused by the first motor 121 or the second motor 122 is very The tension on the strip has no effect, and should not be regarded as the first motor 121 or the second motor 122 in a stopped state. Both

motors

121 and 122 are in operation, which improves the tension control range and dynamic stability in the single motor control mode. For example, in the single operation mode of a small motor, if the large motor stops, the total loss of the large motor and the small motor will account for a large part of the effective torque of the small motor (such as 20%). If the small motor is solely responsible for it , It is bound to reduce the original effective tension control range of the small motor. In addition, in the process of dynamic acceleration and deceleration, the loss caused by the moment of inertia of the large motor will affect the tension control accuracy of the small motor under dynamic conditions.

The operation mode determination module 131 is coupled to the switching parameter determination module 132, which is configured to determine the operation mode switching parameters of the first motor and the second motor based on the operation mode. The “operation mode switching parameter” here can be regarded as the switching slope for the output torque of the first motor 121 and the second motor 122 when the driving assembly 120 is switched from one mode to another mode. The switching slope can ensure the stability of the tension change during the operation mode switching process. This is especially important for thinner strips, such as copper foil. Because the jitter during switching may cause damage to the strip.

The switching parameter determination modules 132 may each be coupled to the regulator 133. The regulator 133 can adjust the output torque of the first motor 121 and the second motor 122 based on the determined operating mode and mode switching parameters, so that the drive assembly 120 can be switched to the first mode and the second mode. And one of the third mode.

In some embodiments, the regulator 133 can determine the tension distribution rate of the first motor 121 and the second motor 122 in each mode according to the rated power of the first motor 121 and the second motor 122 and the determined operation mode. . For example, the power of the first motor 121 is P1 and the tension distribution rate is T1, and the power of the second motor 122 is P2 and the tension distribution rate is T2, the tension distribution rate in different operation modes can be shown by the following table:

Table 1: Tension distribution rate under different modes

To	第一模式First mode	第二模式Second mode	第三模式Third mode
T1T1	11	00	P1/(P1+P2)P1/(P1+P2)
T2T2	00	11	P2/(P1+P2)P2/(P1+P2)

It should be understood that in general, the switching of the operation mode should be sequential so that the total output torque of the first motor 121 and the second motor 122 changes from large to small or from small to large. For example, switching from the second mode to the first mode, and then to the third mode, and vice versa.

In addition, the above and mentioned switching slope for operating mode switching enables the above switching process to be smoothly completed. For example, when the drive component is switched from the second mode to the first mode, T1 will not change from "0" directly to "1", but will gradually change to 1 at a certain switching slope, such as 1/2. .

In some embodiments, the device 100 may further include a loss obtaining module 134 configured to obtain the total loss of the driving component 120. The loss here can include the electrostatic loss of the device and the inertial loss caused by the asymmetric dual motor. The total loss value can be obtained based on the predetermined relationship between the equipment operating speed and the loss parameter. The loss distribution determination module 135 is coupled to the loss acquisition module 134 and is configured to determine the first loss of the first motor 121 and the second motor 122 based on the total loss value and the rated power of the first motor 121 and the second motor 122 The second loss.

For example, the first loss of the first motor 121 may be (total electrostatic loss+total inertia loss)*P1/(P1+P2), and the second loss of the second motor 122 may be (total electrostatic loss+total inertia loss) *P2/(P1+P2).

In some embodiments, the loss compensator 136 is coupled to the loss distribution determination module 135 to perform respective loss compensation for the first motor 121 and the second motor 122 based on the determined first loss and second loss.

The loss due to the different rated powers of the first motor 121 and the second motor 122 and maintaining the energized state in the various operating modes of the drive assembly 120 and other losses due to the intrinsic characteristics of the device can be achieved based on the first motor and The rated power of the second motor compensates for their respective losses, which can increase the service life of the drive components and maintain a stable operating state.

In some embodiments, the device 100 further includes a transmitter 138 to which the regulator 133 and the loss compensator 136 described above can be respectively coupled. The transmitter 138 is coupled to the drive assembly 120 and sends the determined output torque and loss compensation of the first motor and the second motor to the drive assembly 120.

In this way, the device 100 can effectively implement tension control according to the target tension and enables the driving assembly 120 to apply corresponding driving force based on the tension control in real time.

In addition, although not shown in the figure, a frequency converter for applying output torque to the first motor 121 and the second motor 122 may be included between the transmitter 138 and the drive assembly 120.

It should be understood that the components 131-138 shown in FIG. 2 can be included in the controller 130 shown in FIG. 1, or may be separate components independent of the controller 130. The components 131-138 may be implemented as a circuit or a system on a chip (SOC). The components 131-137 shown in FIG. 2 can be replaced, added, or deleted without departing from the principle and concept of the present disclosure.

The various embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Without departing from the scope and spirit of the described embodiments, many modifications and changes are obvious to those of ordinary skill in the art. The choice of terms used herein is intended to best explain the principles, practical applications, or improvements to the technology in the market, or to enable other ordinary skilled in the art to understand the various embodiments disclosed herein.

Claims

An equipment (100) for processing strips (111), including:

The execution part (110) is used to apply tension to the strip (111);

The drive assembly (120) is coupled to the execution part (110) and includes a first motor (121) and a second motor (122) arranged coaxially, and the first motor (121) is arranged in the second Upstream of the electric motor (122) and having a power rating greater than that of the second electric motor (122); and

The controller (130) is coupled to the drive assembly (120) and is configured to determine the first motor (121) and the second motor (122) based on the target tension to be applied to the strip ) The respective output torque distribution,

The first motor (121) and the second motor (122) are each configured to provide a driving force to the execution part (110) according to the output torque distribution, so as to provide driving force to the execution part (110). The strip (111) above applies the target tension.
The apparatus (100) according to claim 1, wherein the execution part (110) comprises a take-up roller for taking up the strip (111) and arranged to be in contact with the first The motor (121) and the second motor (122) are coaxial.
The device (100) according to claim 1, wherein the execution part (110) includes a plurality of tension rollers for simultaneously applying frictional force to the strip (111) passing on the plurality of tension rollers. A tension acting on the strip (111) is generated.
The device (100) according to claim 1, further comprising:

The operation mode determination module (131) is configured to determine the operation of the drive assembly (120) based on the target tension and the rated power of the first motor (121) and the second motor (122) Mode, the operation mode includes: a first mode, in which the target tension is applied by the first motor (121) alone; a second mode, in which the target tension is applied by the second motor (122) alone; And the third mode, wherein the target tension is applied by the first motor (121) and the second motor (122) together;

A switching parameter determination module (132) configured to determine operation mode switching parameters of the first motor (121) and the second motor (122) based on the operation mode; and

The regulator (133) is configured to adjust the output torque of the first motor (121) and the second motor (122) based on the determined operation mode and the mode switching parameter, so that the The driving assembly (120) can be switched to one of the first mode, the second mode and the third mode.
The device according to claim 1, further comprising:

A loss obtaining module (134), configured to obtain the total loss of the driving component (120);

The loss distribution determining module (135) is configured to determine the power of the first motor (121) based on the total loss value and the rated power of the first motor (121) and the second motor (122) The first loss and the second loss of the second motor (122); and

A loss compensator (136) is configured to perform respective loss compensation for the first motor (121) and the second motor (122) based on the determined first loss and the second loss.
The device according to claim 5, further comprising:

A receiver (137), coupled to a peripheral device (140) and configured to receive parameters associated with the target tension from the peripheral device (140); and

A transmitter (138), coupled to the drive assembly (120) and configured to send the determined respective information of the first motor (121) and the second motor (122) to the drive assembly (120) Output torque and loss compensation.
The device according to claim 1, wherein the controller (130) comprises:

The operation mode determination module (131) is configured to determine the operation of the drive assembly (120) based on the target tension and the rated power of the first motor (121) and the second motor (122) Mode, the operation mode includes: a first mode, in which the target tension is applied by the first motor (121) alone; a second mode, in which the target tension is applied by the second motor (122) alone; And the third mode, wherein the target tension is applied by the first motor (121) and the second motor (122) together;

A switching parameter determination module (132) configured to determine operation mode switching parameters of the first motor (121) and the second motor (122) based on the operation mode; and

The regulator (133) is configured to adjust the output torque of the first motor (121) and the second motor (122) based on the determined operation mode and the mode switching parameter, so that the The driving assembly (120) can be switched to one of the first mode, the second mode and the third mode;

A loss obtaining module (134), configured to obtain the total loss of the driving component (120);

The loss distribution determining module (135) is configured to determine the power of the first motor (121) based on the total loss value and the rated power of the first motor (121) and the second motor (122) The first loss and the second loss of the second motor (122); and

A loss compensator (136) configured to perform respective loss compensation on the first motor (121) and the second motor (122) based on the determined first loss and the second loss;

A receiver (137), coupled to a peripheral device (140) and configured to receive parameters associated with the target tension from the peripheral device (140); and

A transmitter (138), coupled to the drive assembly (120) and configured to send the determined respective information of the first motor (121) and the second motor (122) to the drive assembly (120) Output torque and loss compensation.
A method for processing a strip, the method being executed by the device according to any one of claims 1-7.