Device for simultaneously controlling cutter head and cutter arm

Abstract

The utility model relates to the technical field of motor control, in particular to a device for simultaneously controlling a cutter head and a cutter arm. A device for simultaneously controlling a cutter head and a cutter arm comprises a frequency converter, a PLC (programmable logic controller), an IO (input / output) board, a relay, a contactor, a cutter head motor and a cutter arm motor, the frequency converter is provided with a U terminal, a V terminal and a W terminal, the cutter head motor and the cutter arm motor are connected with the frequency converter through the U terminal, the V terminal and the W terminal, the cutter head motor is correspondingly provided with a switch KM1, the cutter arm motor is correspondingly provided with a switch KM2, and the cutter head motor is connected with the cutter arm motor in parallel. By introducing the PLC and the IO board, the frequency converter can control the operation of the two motors at the same time with the help of the PLC, meanwhile, the frequency converter can control the rotating speed of the motors to improve the tool changing efficiency, the two contactors are provided with the main contact switch and the auxiliary contact switch, the interlocking function is achieved, the situation that the two motors act at the same time is avoided, and the working efficiency is improved. And a protection effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor control, in particular to a device for simultaneously controlling a cutter disc and a cutter arm. Background Art

[0002] The frequency converter is a kind of power adjustment equipment widely used in the industrial field. It can realize the speed control of the motor by changing the frequency of the power supply. In many production processes, the forward and reverse control of the motor is very important. The frequency converter can realize this function through different control methods. One is to change the rotation direction of the motor by changing the phase sequence of the power supply. In practical applications, it is usually necessary to use additional circuits to change the phase sequence of the power supply; the other is to control the rotation speed and rotation direction of the motor by changing the output frequency, that is, when the output frequency is higher than a certain value, the motor rotates in the forward direction, and when the output frequency is lower than a certain value, the motor rotates in the reverse direction. This control method does not require additional circuits, and the operation is simple and easy to implement. However, no matter which method is used to control the direction of the motor, under normal circumstances, only one motor is controlled to run. However, in the processing of large tool libraries, it is very common for two motors to run at the same time. How to realize the operation of two motors under the control of a frequency converter has become a question to think about. Utility Model Content

[0003] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained through the structures specifically pointed out in the description and other drawings of the description.

[0004] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a device for simultaneously controlling the cutter disc and the cutter arm. By introducing a PLC controller and an IO board, the frequency converter can simultaneously control the operation of two motors with the help of the PLC controller. At the same time, the frequency converter can also control the motor speed to improve the tool changing efficiency, control the motor brake, cancel the conventional mechanical brake, eliminate brake wear, and achieve the effect of precise control. The two contactors are provided with a main contact switch and an auxiliary contact switch to realize the interlocking function, avoid the simultaneous operation of the two motors, and play a protective role.

[0005] The utility model provides a device for simultaneously controlling a cutter disc and a cutter arm, comprising a frequency converter, a PLC controller, an IO board, a relay, a contactor, a cutter disc motor and a cutter arm motor; the frequency converter is provided with three terminals U, V and W, the cutter disc motor and the cutter arm motor are connected to the frequency converter through the three terminals U, V and W, the cutter disc motor is correspondingly provided with a switch KM1, the cutter arm motor is correspondingly provided with a switch KM2, and the cutter disc motor and the cutter arm motor are connected in parallel; the PLC controller is connected to the IO board, the IO board is provided with a plurality of IO interfaces, the IO interfaces are correspondingly connected with the relay, the ends of the relay are connected with the cutter disc motor and the cutter arm motor, and the PLC controller controls the forward rotation and the reverse rotation of the cutter disc motor and the cutter arm motor by controlling the high and low levels output by the IO interface. The cutter disc motor and the cutter arm motor are connected to the inverter through the three terminals U, V, and W to power the motors and control the operation of the two motors. The switches KM1 and KM2 corresponding to the motors are common manual closing switches, which are used to manually control the start of each motor. With the help of the PLC controller and the IO board, the inverter can be expanded to control the operation of multiple motors.

[0006] In some embodiments, the relay includes a first relay, a second relay, a third relay, and a fourth relay, and the IO board is provided with four output ports and is respectively connected to the first relay, the second relay, the third relay, and the fourth relay. The function of the relay is to convert a low-current, low-voltage switch signal into a high-current, high-voltage motor output signal through the excitation of an electromagnet, so as to achieve functions such as logic control, time delay, circuit protection, and interlocking in an electrical control system.

[0007] In some embodiments, if the high level is represented by 1 and the low level is represented by 0, the four output ports of the IO board: 1010 controls the forward rotation of the cutter motor, 0110 controls the reverse rotation of the cutter motor, 1001 controls the forward rotation of the knife arm motor, and 0101 controls the reverse rotation of the knife arm motor. Each motor is expanded to be controlled by two relays. Through the program setting of the PLC, multiple operating modes of the two motors can be set by changing the high and low levels, so as to achieve the effect of controlling the two motors without program conflicts.

[0008] In some embodiments, the frequency converter is provided with M11 terminal and M12 terminal, the M11 terminal is connected to a switch KA1, the M12 terminal is connected to a switch KA2, the action of the switch KA1 is synchronized with the action of the first relay, and the action of the switch KA2 is synchronized with the action of the second relay. By controlling the high and low level changes of the first relay and the second relay, the operation of the switches KA1 and KA2 is controlled. The M11 terminal and the M12 terminal on the frequency converter are used to control the forward and reverse rotation of the motor. The M12-M15 terminal of the frequency converter is used to control the running speed of the motor. The purpose of speed regulation can be achieved by connecting the M12-M15 external circuit. The specific control program is not described here. The relevant program can be obtained by reading the instruction manual of the specific frequency converter model. A brake resistor is set between the B1 and B2 terminals of the frequency converter to play a braking role in the process of speed hopping.

[0009] In some embodiments, the cutter motor is provided with a first contactor, the first contactor is connected to a main contact switch KA3, the cutter arm motor is provided with a second contactor, the second contactor is connected to a main contact switch KA4, and the first contactor is connected in parallel with the second contactor. The main contact switch is used to cooperate with the corresponding contactor to realize the switch of the contactor.

[0010] In some embodiments, the first contactor is provided with an auxiliary contact switch KM1, which is connected in series with the second contactor, and the second contactor is provided with an auxiliary contact switch KM2, which is connected in series with the first contactor. The auxiliary contact switch is provided on the opposite branch to the main contact switch, and serves to interlock the two motors.

[0011] In some embodiments, the main contact switch KA3 operates synchronously with the third relay, and the main contact switch KA4 operates synchronously with the fourth relay. By controlling the high and low level changes of the third and fourth relays, the operation of switches KA3 and KA4 is controlled to achieve forward and reverse control of the two motors.

[0012] In some embodiments, when the main contact switch KA3 is closed, the auxiliary contact switch KM1 is opened, and when the main contact switch KA3 is opened, the auxiliary contact switch KM1 is closed.

[0013] In some embodiments, when the main contact switch KA4 is closed, the auxiliary contact switch KM2 is opened, and when the main contact switch KA4 is opened, the auxiliary contact switch KM2 is closed. When the main contact switch is closed, the auxiliary contact switch KM1 is opened, and vice versa, thereby achieving an interlocking effect, preventing the two motors from operating at the same time, and playing a protective role.

[0014] By adopting the above technical solution, the beneficial effects of the utility model are:

[0015] The utility model introduces a PLC controller and an IO board, so that the frequency converter can control the operation of two motors at the same time with the help of the PLC controller. At the same time, the frequency converter can also control the motor speed to improve the tool changing efficiency, control the motor brake, cancel the conventional mechanical brake, eliminate brake wear, and achieve the effect of precise control. The two contactors are provided with a main contact switch and an auxiliary contact switch to realize the interlocking function, avoid the simultaneous operation of the two motors, and play a protective role.

[0016] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

[0017] Undoubtedly, these and other objects of the present invention will become more apparent after the following detailed description of the preferred embodiments described with reference to various figures and drawings.

[0018] In order to make the above and other purposes, features and advantages of the present invention more obvious and understandable, one or several preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0020] In the drawings, the same reference numerals are used for the same components and the drawings are schematic and not necessarily drawn to scale.

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only one or several embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on such drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the connection of the frequency converter in some embodiments of the utility model;

[0023] Figure 2 This is a schematic diagram of IO board connection in some embodiments of the present utility model;

[0024] Figure 3 The figure is a schematic diagram of the connection between the contactor and the motor in some embodiments of the present invention.

[0025] Description of main reference numerals:

[0026] 1. Frequency converter;

[0027] 2. IO board;

[0028] 3. Relay;

[0029] 31. First relay;

[0030] 32. Second relay;

[0031] 33. The third relay;

[0032] 34. The fourth relay;

[0033] 4. Contactor;

[0034] 41. First contactor;

[0035] 42. Second contactor;

[0036] 5. Cutter motor;

[0037] 6. Knife arm motor. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with specific implementation methods. It should be understood that the specific implementation methods described here are only used to explain the utility model, but not to limit the utility model.

[0039] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected bodies are not connected through a transition structure, but are connected to form a whole through a connecting structure. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0041] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0042] Reference Figure 1 , Figure 1 Schematic diagram of inverter connection in some embodiments of the utility model.

[0043] According to some embodiments of the utility model, the utility model provides a device for simultaneously controlling a cutter disc and a cutter arm, comprising a frequency converter 1, a PLC controller, an IO board 2, a relay 3, a contactor 4, a cutter disc motor 5 and a cutter arm motor 6; the frequency converter 1 is provided with three terminals U, V, and W, the cutter disc motor 5 and the cutter arm motor 6 are connected to the frequency converter 1 through the three terminals U, V, and W, the cutter disc motor 5 is correspondingly provided with a switch KM1, the cutter arm motor 6 is correspondingly provided with a switch KM2, and the cutter disc motor 5 is connected in parallel with the cutter arm motor 6; the PLC controller is connected to the IO board 2, the IO board 2 is provided with several IO interfaces, the IO interface is correspondingly connected to the relay 3, the end of the relay 3 is connected to the cutter disc motor 5 and the cutter arm motor 6, and the PLC controller controls the forward rotation and flipping of the cutter disc motor 5 and the cutter arm motor 6 by controlling the high and low levels output by the IO interface. The cutter disc motor 5 and the cutter arm motor 6 are connected to the frequency converter 1 through the three terminals U, V, and W to supply power to the motors and control the operation of the two motors. The switches KM1 and KM2 corresponding to the motors are common manual closing switches, which are used to manually control the start of each motor. With the help of the PLC controller and the IO board 2, the frequency converter 1 can be expanded to control the operation of multiple motors.

[0044] The frequency converter 1 is provided with M11 terminal and M12 terminal, and the M11 terminal is connected with switch KA1, and the M12 terminal is connected with switch KA2. The action of switch KA1 is synchronized with the action of the first relay 31, and the action of switch KA2 is synchronized with the action of the second relay 32. By controlling the high and low level changes of the first relay 31 and the second relay 32, the operation of switches KA1 and KA2 is controlled. The M11 terminal and M12 terminal on the frequency converter 1 are used to control the forward and reverse rotation of the motor. The M12-M15 terminal of the frequency converter 1 is used to control the running speed of the motor. The purpose of speed regulation can be achieved by connecting the M12-M15 external circuit. The specific control program is not described here. The relevant program can be obtained by reading the instruction manual of the specific frequency converter 1 model. A brake resistor is set between the B1 and B2 terminals of the frequency converter 1 to play a braking role in the speed jump process.

[0045] Reference Figure 2 , Figure 2 This is a schematic diagram of IO board connection in some embodiments of the present invention.

[0046] According to some embodiments of the utility model, optionally, the relay 3 includes a first relay 31, a second relay 32, a third relay 33, and a fourth relay 34, and the IO board 2 is provided with four output ports and is respectively connected to the first relay 31, the second relay 32, the third relay 33, and the fourth relay 34. The function of the relay 3 is to convert a low-current, low-voltage switch signal into a high-current, high-voltage motor output signal through the excitation of an electromagnet, so as to achieve functions such as logic control, time delay, circuit protection, and interlocking in an electrical control system.

[0047] If high level is represented by 1 and low level is represented by 0, then the four output ports of the IO board 2: 1010 controls the forward rotation of the cutter head motor 5, 0110 controls the reverse rotation of the cutter head motor 5, 1001 controls the forward rotation of the knife arm motor 6, and 0101 controls the reverse rotation of the knife arm motor 6. Each motor is expanded to be controlled by two relays 3. Through the program setting of the PLC, multiple operation modes of the two motors can be set by changing the high and low levels, so as to achieve the effect of controlling the two motors without program conflicts.

[0048] Reference Figure 3 , Figure 3 The figure is a schematic diagram of the connection between the contactor and the motor in some embodiments of the present invention.

[0049] According to some embodiments of the utility model, optionally, the cutter motor 5 is provided with a first contactor 41, the first contactor 41 is connected to a main contact switch KA3, the cutter arm motor 6 is provided with a second contactor 42, the second contactor 42 is connected to a main contact switch KA4, and the first contactor 41 is connected in parallel with the second contactor 42. The provided main contact switch is used to cooperate with the corresponding contactor 4, so as to realize the switching of the contactor 4.

[0050] The first contactor 41 is provided with an auxiliary contact switch KM1, which is connected in series with the second contactor 42, and the second contactor 42 is provided with an auxiliary contact switch KM2, which is connected in series with the first contactor 41. The auxiliary contact switch is provided on the opposite branch to the main contact switch, and plays an interlocking role for the two motors.

[0051] The main contact switch KA3 operates synchronously with the third relay 33, and the main contact switch KA4 operates synchronously with the fourth relay 34. By controlling the high and low level changes of the third relay 33 and the fourth relay 34, the operation of the switches KA3 and KA4 is controlled to control the forward and reverse rotation of the two motors.

[0052] When the main contact switch KA3 is closed, the auxiliary contact switch KM1 is disconnected, and when the main contact switch KA3 is disconnected, the auxiliary contact switch KM1 is closed; when the main contact switch KA4 is closed, the auxiliary contact switch KM2 is disconnected, and when the main contact switch KA4 is disconnected, the auxiliary contact switch KM2 is closed. When the main contact switch is closed, the auxiliary contact switch KM1 is disconnected, and vice versa, thereby achieving an interlocking effect, preventing the two motors from operating at the same time, and playing a protective role.

[0053] It should be understood that the embodiments disclosed in the present invention are not limited to the specific processing steps or materials disclosed herein, but should be extended to equivalent substitutions of such features understood by ordinary technicians in the relevant field. It should also be understood that the terms used herein are only used for the purpose of describing specific embodiments and are not meant to be limiting.

[0054] The "embodiment" mentioned in the specification means that the specific features or characteristics described in conjunction with the embodiment are included in at least one embodiment of the utility model. Therefore, the phrases or "embodiment" appearing in various places throughout the specification do not necessarily refer to the same embodiment.

[0055] In addition, the described features or characteristics may be combined in one or more embodiments in any other suitable manner. In the above description, some specific details, such as thickness, quantity, etc., are provided to provide a comprehensive understanding of the embodiments of the utility model. However, those skilled in the relevant art will understand that the utility model can be implemented without one or more of the above specific details or can also be implemented using other methods, components, materials, etc.

Claims

1. A device for simultaneously controlling a cutter disc and a cutter arm, characterized in that: Including frequency converter, PLC controller, IO board, relay, contactor, cutter motor and cutter arm motor; The frequency converter is provided with three terminals U, V, and W, and the cutter disc motor and the cutter arm motor are connected to the frequency converter through the three terminals U, V, and W. The cutter disc motor is provided with a switch KM1, and the cutter arm motor is provided with a switch KM2, and the cutter disc motor and the cutter arm motor are connected in parallel; The PLC controller is connected to the IO board, which is provided with several IO interfaces. The IO interfaces are correspondingly connected to the relays, and the ends of the relays are connected to the cutter disc motor and the cutter arm motor. The PLC controller controls the forward rotation and flipping of the cutter disc motor and the cutter arm motor by controlling the high and low levels output by the IO interfaces.

2. The device for simultaneously controlling the cutter disc and the cutter arm according to claim 1, characterized in that: The relay comprises a first relay, a second relay, a third relay and a fourth relay. The IO board is provided with four output ports and is respectively connected to the first relay, the second relay, the third relay and the fourth relay.

3. The device for simultaneously controlling the cutter disc and the cutter arm according to claim 2, characterized in that: If the high level is represented by 1 and the low level is represented by 0, then the four output ports of the IO board: 1010 controls the knife disc motor to rotate forward, 0110 controls the knife disc motor to rotate reversely, 1001 controls the knife arm motor to rotate forward, and 0101 controls the knife arm motor to rotate reversely.

4. The device for simultaneously controlling the cutter disc and the cutter arm according to claim 2, characterized in that: The frequency converter is provided with an M11 terminal and an M12 terminal. The M11 terminal is connected to a switch KA1, and the M12 terminal is connected to a switch KA2. The action of the switch KA1 is synchronized with the action of the first relay, and the action of the switch KA2 is synchronized with the action of the second relay.

5. The device for simultaneously controlling the cutter disc and the cutter arm according to claim 4, characterized in that: The cutter disc motor is provided with a first contactor, which is connected to a main contact switch KA3. The cutter arm motor is provided with a second contactor, which is connected to a main contact switch KA4. The first contactor is connected in parallel with the second contactor.

6. The device for simultaneously controlling the cutter disc and the cutter arm according to claim 5, characterized in that: The first contactor is provided with an auxiliary contact switch KM1, and the auxiliary contact switch KM1 is connected in series with the second contactor. The second contactor is provided with an auxiliary contact switch KM2, and the auxiliary contact switch KM2 is connected in series with the first contactor.

7. The device for simultaneously controlling the cutter disc and the cutter arm according to claim 6, characterized in that: The action of the main contact switch KA3 is synchronized with the action of the third relay, and the action of the main contact switch KA4 is synchronized with the action of the fourth relay.

8. The device for simultaneously controlling a cutter disc and a cutter arm according to claim 6, characterized in that: When the main contact switch KA3 is closed, the auxiliary contact switch KM1 is opened, and when the main contact switch KA3 is opened, the auxiliary contact switch KM1 is closed.

9. The device for simultaneously controlling a cutter disc and a cutter arm according to claim 6, characterized in that: When the main contact switch KA4 is closed, the auxiliary contact switch KM2 is opened, and when the main contact switch KA4 is opened, the auxiliary contact switch KM2 is closed.

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