CN210818745U - Cutting machine control device - Google Patents
Cutting machine control device Download PDFInfo
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- CN210818745U CN210818745U CN201920613089.7U CN201920613089U CN210818745U CN 210818745 U CN210818745 U CN 210818745U CN 201920613089 U CN201920613089 U CN 201920613089U CN 210818745 U CN210818745 U CN 210818745U
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Abstract
A control device for a cutting machine is arranged on the cutting machine and comprises a control button and a control circuit. The control button is pressed and then outputs a control instruction; the control circuit comprises a power supply unit, a voltage transformation unit, a power output unit and a switch unit. Wherein, the power supply unit provides three-phase alternating current signals; the voltage transformation unit is used for performing voltage transformation on the input three-phase alternating current signal and outputting a direct current signal; the power output unit receives a three-phase alternating current signal and drives a motor; and the switch unit is closed according to the control instruction so as to enable the power output unit to work after being conducted, and therefore the motor is powered on to work. The control device of the cutting machine outputs the control instruction through the control button arranged on the handle of the cutting machine, and controls the switch unit in the control circuit, so that the motor of the cutting machine is controlled to work, the control button is arranged on the handle of the cutting machine, and therefore only one operator is needed to operate, the working efficiency is high, and the safety is high.
Description
Technical Field
The utility model belongs to the technical field of the cutting machine, concretely relates to cutting machine controlling means.
Background
In the machining process, a cutting machine is often used to cut the workpiece. At present, the power supply of the cutting machine is a three-phase power supply, the power supply needs to be turned on before the cutting machine is used, and a power switch is not arranged on the machine body of the cutting machine but arranged on a motor body, namely an air switch or a circuit breaker. Therefore, the conventional control method of the cutting machine is as follows: when the cutting machine is used, two operators work in a matched mode, the first operator manually closes a power switch on a motor body to start the motor, the cutting machine starts to work, and the second operator holds a handle of the cutting machine again to control a blade to cut a workpiece; after the cutting is finished, a second operator needs to release the handle, and the first operator closes the power switch in a matched mode, so that the motor stops working, and the cutting machine stops rotating. The control mode of the cutting machine needs at least two persons to work in a matching way, and the working efficiency and the safety are low.
Therefore, the conventional cutting machine control technology has the problems that a plurality of operators are required to cooperate due to the separation of a power switch of the cutting machine and a cutting machine body, the working efficiency is low, and the safety is low.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a cutting machine controlling means aims at solving the problem that exists among the traditional technical scheme because the switch of cutting machine and the separation of cutting machine body and the work of needing a plurality of operators cooperation, work efficiency is low and the security is low.
The embodiment of the utility model provides a cutting machine controlling means, include:
the control button is arranged on a handle of the cutting machine and used for outputting a control instruction after being pressed; and
the control circuit is connected with the control button through a cable and is used for controlling the working state of the cutting machine;
the control circuit includes:
a power supply unit for supplying a three-phase alternating current signal;
the transformation unit is connected with the power supply unit and is used for performing voltage transformation on the three-phase alternating current signal and outputting a direct current signal;
the power output unit is connected with the power supply unit, the voltage transformation unit and the motor and used for receiving the three-phase alternating current signals and driving the motor; and
and the switch unit is connected with the control button, the voltage transformation unit and the power output unit, and is used for receiving the direct current signal and closing according to the control instruction so as to enable the power output unit to work after being conducted.
The embodiment of the utility model provides a pair of cutting machine controlling means, including control button and control circuit, control button installs on the handle of cutting machine, and control circuit is connected with control button, and the two is mutually supported the operating condition of control cutting machine. After the control button is pressed down, a control instruction is output to the control circuit, and after a switch unit in the control circuit receives the control instruction, the power output unit is conducted, so that the motor of the cutting machine is controlled to work. The control button is arranged on the handle of the cutting machine, so that only one operator is needed to operate, the operator is not needed to press the power switch of the motor, and the other operator controls the cutting machine to cut a workpiece, so that the working efficiency and the safety are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic block diagram of a control device for a cutting machine according to an embodiment of the present invention;
fig. 2 is a schematic block diagram of a control device for a cutting machine according to another embodiment of the present invention;
FIG. 3 is a circuit diagram of a control circuit in the control device shown in FIG. 1;
FIG. 4 is a circuit diagram of a control circuit in the control device shown in FIG. 2;
fig. 5 is an external design view of a control device for a cutting machine shown in fig. 1 or 2.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a schematic block diagram of a control device for a cutting machine according to an embodiment of the present invention is shown, for convenience of description, only the parts related to the embodiment are shown, and the details are as follows:
a control device for a cutting machine comprises a control button AN and a control circuit 01.
The control button AN is arranged on a handle of the cutting machine, and when the control button AN is pressed, a control instruction is output to the control circuit 01. In particular, the control button AN is pressed by the operator of the cutting machine, the control button AN being mounted above the handle of the cutting machine in a position convenient for the thumb of the operator to press.
The control circuit 01 is connected with a control button AN through a cable 8 and is used for controlling the working state of the cutting machine.
The control circuit 01 includes a power supply unit 10, a voltage transforming unit 20, a power output unit 30, and a switching unit 40.
The power supply unit 10 is used to supply a three-phase alternating current signal. Specifically, the power supply unit 10 receives a three-phase alternating current signal through a cable and supplies the three-phase alternating current signal to the transforming unit 20. Optionally, the three-phase alternating current signal is 380V or 220V. The three-phase alternating current signals include a U-phase alternating current signal, a V-phase alternating current signal, and a W-phase alternating current signal.
The transforming unit 20 is connected to the power supply unit 10, and is configured to output a dc signal after performing voltage transformation on the three-phase ac signal. Specifically, the transforming unit 20 transforms the three-phase ac signal into a 110V ac signal and a 24V ac signal, and then rectifies the 110V ac signal and the 24V ac signal into different dc signals, respectively.
The power output unit 30 is connected to the power supply unit 10, the transforming unit 20 and the motor 03, and is configured to receive a three-phase ac signal and drive the motor 03.
Specifically, when the power output unit 30 is turned on, the power supply unit 10 outputs a 380V three-phase ac signal or a 220V three-phase ac signal to the power output unit 30, and the power output unit 30 transmits the three-phase ac signal to the motor 03 to drive the motor 03 to perform power receiving operation; when the motor 03 is driven, the cutter operates.
The switch unit 40 is connected to the control button AN, the transformer unit 20 and the power output unit 30, and is configured to receive the dc signal and close according to a control instruction, so that the power output unit 30 operates after being turned on. Specifically, the dc signal received by the switching unit 40 is a dc signal obtained by rectifying the 24V ac signal.
If the switching unit 40 is closed without receiving the control command outputted from the control button AN, even if the power supply unit 10 receives a three-phase ac signal through a cable and outputs the signal to the transforming unit 20, the power output unit 30 is not turned on, and thus the motor 03 does not operate. Therefore, only one operator needs to insert the cable connected with the power supply unit 10 into the socket to obtain the commercial power (the commercial power belongs to a 220V three-phase alternating current signal) or insert other power transmission equipment to obtain the three-phase alternating current signal (at this time, the power supply unit 10 and the voltage transformation unit 20 in the control circuit 01 are already connected with the three-phase alternating current signal, but the motor 03 cannot be operated by power), and then press the control button AN to output a control instruction, so as to finally drive the motor 03 to operate, thereby replacing the traditional technology that two operators cooperate to control the cutting machine, improving the working efficiency, and avoiding the safety problem caused by the improper cooperation among a plurality of operators.
Referring to fig. 2, a schematic block diagram of a control device for a cutting machine according to another embodiment of the present invention is shown, in which for convenience of description, only the parts related to the embodiment are shown, and the details are as follows:
the present embodiment provides a control device for a cutting machine, including a control button AN and a control circuit 01. The control circuit 01 includes a power supply unit 10, a voltage transformation unit 20, a power output unit 30, and a switch unit 40. The functions and operating principles of the control button AN, the power supply unit 10, the voltage transformation unit 20, the power output unit 30 and the switch unit in the control circuit 01 are completely the same as those of the corresponding components and units in the embodiment shown in fig. 1, and are not described again here.
The present embodiment provides a control device for a cutting machine, which is different from the control device shown in fig. 1 in that: the control device of the tube provided in the present embodiment further includes a first display unit 50 and a second display unit 60.
The first display unit 50 is connected to the transforming unit 20 and is used for displaying the working states of the power supply unit 10 and the transforming unit 20.
Specifically, when the power supply unit 10 is connected to a three-phase alternating current through a cable, the power supply unit 10 supplies the three-phase alternating current to the transforming unit 20, the transforming unit 20 transforms the three-phase alternating current into a direct current signal, that is, the power supply unit 10 and the transforming unit 20 are in an operating state, and the first display unit 50 displays that the power supply unit 10 and the transforming unit 20 are in the operating state by emitting an optical signal. When the power supply unit 10 does not supply the three-phase alternating current, the transforming unit 20 does not perform the voltage transformation operation, i.e., the power supply unit 10 and the transforming unit 20 are not in the working state, and the first display unit 50 does not emit the light signal.
Optionally, the light signal emitted by the first display unit is a red light signal.
The second display unit 60 is connected to the switch unit 40 and the power output unit 30, and is used for displaying the operating states of the power output unit 30 and the switch unit 40.
Specifically, when the control button AN is pressed, the switch unit 40 receives a control command to be closed, so that the power output unit 30 is turned on, receives three-phase ac power and drives the motor 03, that is, the switch unit 40 and the power transmission unit are in AN operating state, and the second display unit 60 emits a light signal, so that the switch unit 40 and the power transmission unit are in the operating state.
Optionally, the light signal emitted by the second display unit is a green light signal.
Please refer to fig. 3, which is a schematic circuit diagram of a control circuit 01 in the control device shown in fig. 1, and for convenience of description, only the parts related to the present embodiment are shown, and the details are as follows:
in an alternative embodiment, the transforming unit 20 includes a first fuse FU1, a transformer T, a first rectifier bridge D1, and a second rectifier bridge D2.
The positive electrode direct current output end of the first rectifier bridge D1 is connected to the first end of the control button AN. The first end of the first fuse FU1 is connected with the W-phase output end of the power supply unit 10, the first end of the primary coil of the transformer T is connected with the V-phase output end of the power supply unit 10, and the second end of the first fuse FU1 is connected with the second end of the primary coil of the transformer T; a first end of a first secondary coil of the transformer T is connected with a first alternating current input end of the first rectifier bridge D1, and a second end of the first secondary coil of the transformer T is connected with a second alternating current input end of the first rectifier bridge D1; the positive dc output terminal and the negative dc output terminal of the first rectifier bridge D1 are connected to the switching unit 40.
A first end of a second secondary coil of the transformer T is connected with a first alternating current input end of the second rectifier bridge D2, a second end of the second secondary coil of the transformer T is connected with a second alternating current input end of the second rectifier bridge D2, a positive direct current output end of the second rectifier bridge D2 is connected with the switch unit 40, and a negative direct current output end of the second rectifier bridge D2 is connected with the power output unit 30.
Specifically, the three-phase alternating current signal includes a U-phase alternating current signal, a V-phase alternating current signal, and a W-phase alternating current signal. The V-phase output terminal and the W-phase output terminal respectively output a V-phase alternating current signal and a W-phase alternating current signal, and the following U-phase input terminal is used for outputting a U-phase alternating current signal.
A primary coil of the transformer T is connected with the power supply unit 10 and receives a 380V three-phase alternating current signal or a 220V three-phase alternating current signal; after transformation, the first secondary side coil outputs 24V alternating current signals, and the second secondary side coil outputs 110V alternating current signals.
The first fuse FU1 is used to protect the power supply unit 10 and the transforming unit 20, and is opened in time to protect the circuit when an abnormal current or an abnormally high temperature occurs in the circuit. The first rectifier bridge D1 and the second rectifier bridge D2 are composed of four rectifier diodes.
In an alternative embodiment, the switching unit 40 comprises an intermediate relay KA.
The first end of the coil of the intermediate relay KA is connected with the second end of the control button AN, and the second end of the coil of the intermediate relay KA is connected with the negative direct current output end of the first rectifier bridge D1. The first end of the normally open switch of the intermediate relay KA is connected with the positive output end of the second rectifier bridge D2, and the second end of the normally open switch of the intermediate relay KA is connected with the power output unit 30.
Specifically, a first end of the control button AN is connected to the positive dc output end of the first rectifier bridge D1, and a second end is connected to a first end of the coil of the intermediate relay KA. When the control button AN is pressed, the first end and the second end of the control button AN are conducted, so that the direct current signal output after being rectified by the first rectifier bridge D1 flows through the coil of the intermediate relay KA, the coil of the intermediate relay KA is excited, the normally open switch is closed, the second rectifier bridge D2 and the power output unit 30 are communicated, the direct current signal output after being rectified by the second rectifier bridge D2 flows through the power output unit 30, and the power output unit 30 starts to work.
In an alternative embodiment, the power take-off unit 30 includes a second fuse FU2, a third fuse FU3, a fourth fuse FU4, and a contactor KM.
The first end of the coil of the contactor KM is connected with the second end of the normally open switch of the intermediate relay KA, and the second end of the coil of the contactor KM is connected with the negative direct-current output end of the second rectifier bridge D2.
A first end of the second fuse FU2 is connected with the U-phase input end of the power supply unit 10, a second end of the second fuse FU2 is connected with a first end of a first contact of the contactor KM, and a second end of the first contact of the contactor KM is connected with the motor 03; a first end of the third fuse FU3 is connected with the V-phase input end of the power supply unit 10, a second end of the third fuse FU3 is connected with a first end of a second contact of the contactor KM, and a second end of the second contact of the contactor KM is connected with the motor 03; a first end of the fourth fuse FU4 is connected to the W-phase input terminal of the power supply unit 10, a second end of the fourth fuse FU4 is connected to a first end of a third contact of the contactor KM, and a second end of the third contact of the contactor KM is connected to the motor 03.
Specifically, when the normally open switch of the intermediate relay KA is closed, the second rectifier bridge D2 is communicated with the contactor KM, so that the direct-current signal rectified and outputted by the second rectifier bridge D2 flows through the coil of the contactor KM, the coil of the contactor KM is excited, the first contact, the second contact and the third contact of the contactor KM are closed, the power output unit 30 starts to operate, the three-phase alternating-current signal provided by the power supply unit 10 is outputted to the motor 03, and the motor 03 is driven to operate.
Please refer to fig. 4, which is a schematic circuit diagram of the control circuit 01 in the control device shown in fig. 2, and for convenience of description, only the parts related to the present embodiment are shown, and the details are as follows:
in an alternative embodiment, the first display unit 50 includes a first resistor R1 and a first light emitting diode D3.
A first end of the first resistor R1 is connected to the positive dc output end of the first rectifier bridge D1, a second end of the first resistor R1 is connected to the anode of the first light-emitting diode D3, and the cathode of the first light-emitting diode D3 is connected to the negative dc output end of the first rectifier bridge D1.
Specifically, when the power supply unit 10 is connected to a three-phase ac power through a cable, the power supply unit 10 provides the three-phase ac power to the transforming unit 20, and the transforming unit 20 transforms the three-phase ac power into a dc power signal, which is transmitted through a loop formed by the first rectifier bridge D1, the first resistor R1, and the first light emitting diode D3, so that the first light emitting diode D3 is turned on to emit a light signal to indicate that the power supply unit 10 and the transforming unit 20 are in an operating state. At this time, if the control button AN is not pressed, the line between the first rectifier bridge D1 and the intermediate relay KA is not conducted, so that the motor 03 does not operate, and even if the control circuit 01 has received a three-phase ac signal through a cable, the cutter does not operate immediately, thereby ensuring the safety of the operator.
The second display unit 60 includes a second resistor R2 and a second light emitting diode D4.
The first end of the second resistor R2 is connected to the second end of the normally open switch of the intermediate relay KA, the second end of the second resistor R2 is connected to the anode of the second light emitting diode D4, and the cathode of the second light emitting diode D4 is connected to the negative dc output end of the second rectifier bridge D2.
Specifically, when the control button AN is pressed, the coil of the intermediate relay KA is electrically excited, the normally open switch of the intermediate relay KA is closed, the power output unit 30 is turned on and operated, the circuits of the second rectifier bridge D2, the second resistor R2 and the second light emitting diode D4 are also turned on, and the direct current signal rectified and outputted by the second rectifier bridge D2 flows through the second light emitting diode D4, so that the direct current signal is electrically operated to emit a light signal, thereby displaying that the switch unit 40 and the power transmission unit are in AN operating state.
Referring to fig. 5, an external design view of the control device for a cutting machine shown in fig. 1 or fig. 2 is shown, and for convenience of description, only the parts related to the present embodiment are shown, and the details are as follows:
the embodiment of the utility model provides a control device, including control button AN and control circuit 01, still include bottom plate 10 and box 1.
The control circuit 01 is disposed inside the case 1, and the control button AN is exposed outside the case 1. The surface of the box body 1 is provided with a power indicator light opening 6 and a work indicator light opening 7.
In particular, the control button AN is provided on the handle of the cutting machine, facilitating the pressing by the thumb of the operator. The control circuit 01 is welded on a PCB which is arranged inside the box body 1.
The power indicator opening 6 formed on the surface of the box 1 faces the first light emitting diode D3 on the control circuit 01, and is used for displaying whether the power unit 10 and the transforming unit 20 are in an operating state, that is, whether the control circuit 01 is connected to a three-phase alternating current signal through a cable. When the control circuit 01 is connected with a three-phase alternating current signal, the first light emitting diode D3 emits light, and AN operator can observe the light through the power indicator lamp opening 6, so that the situation that the control circuit 01 of the cutting machine is powered on at the moment is known, and the motor 03 can be driven only by pressing the control button AN, and a workpiece is cut.
The working indicator light opening 7 formed on the surface of the box body 1 is opposite to the second light emitting diode D4 on the control circuit 01, and is used for displaying whether the power output unit 30 and the switch unit 40 are in a working state, that is, displaying that the motor 03 is driven and the cutting machine is in a working state. After the control circuit 01 is powered on, when AN operator presses a control button AN on the handle, the second light-emitting diode D4 emits light, the operator observes the light through the working indicator light opening 7, and the cutting machine is displayed to be in a working state at the moment and can cut workpieces.
In an alternative embodiment, the bottom plate 10 of the control device is provided with a plurality of fixing bolt holes 2, a cable inlet 4, a power line outlet 3 and a cable inlet 5.
Wherein a plurality of fixing bolt holes 2 are used for fixing the control device on the cutting machine by bolts.
The cable inlet 4 is used to introduce a cable into the interior of the cabinet 1 to connect the cable with the power supply unit 10.
The power line outlet 3 is used to draw power lines out of the case 1 to connect the power output unit 30 with the motor 03.
The cable inlet 5 is used to introduce a cable 8 into the inside of the cabinet 1 so that the control circuit 01 is connected to the control button AN.
Specifically, the number of fixing bolt holes 2 is four, and four corners of the bottom plate 10 are separately provided.
The power supply unit 10 needs to obtain a 220V or 380V three-phase ac signal through a cable, one end of the cable is connected to an external socket to obtain commercial power, or other power transmission equipment capable of providing the three-phase ac signal, and the other end of the cable is connected to the power supply unit 10 inside the box body 1, so that the cable is introduced into the box body 1 through the cable inlet 4 on the bottom plate 10 to connect the power supply unit 10.
Since the motor 03 is provided outside the control device and needs to be connected to the power output unit 30 via a power line, the power line is drawn out from the inside of the casing 1 to the outside via the power line outlet 3 on the bottom plate 10.
The control circuit 01 is connected with a control button AN which is arranged on a handle of the cutting machine, and the control circuit 01 is connected with the control button AN through a cable 8, so that the cable 8 is led into the box body 1 through a cable inlet to be connected with the control circuit 01.
In an alternative embodiment, the box 1 and the bottom plate 10 are made of insulating materials.
In an alternative embodiment, the box body and the bottom plate are made of insulating materials.
To sum up, the embodiment of the utility model provides a pair of cutting machine controlling means, including control button and control circuit, control button installs on the handle of cutting machine, and control circuit is connected with control button, and the two is mutually supported the operating condition of control cutting machine. After the control button is pressed down, a control instruction is output to the control circuit, and after a switch unit in the control circuit receives the control instruction, the power output unit is conducted, so that the motor of the cutting machine is controlled to work. The control button is arranged on the handle of the cutting machine, so that only one operator is needed to operate, the operator is not needed to press the power switch of the motor, and the other operator controls the cutting machine to cut a workpiece, so that the working efficiency and the safety are improved.
Various embodiments are described herein for various devices. Numerous specific details are set forth in order to provide a thorough understanding of the overall structure, function, manufacture, and use of the embodiments as described in the specification and illustrated in the accompanying drawings. However, it will be understood by those skilled in the art that the embodiments may be practiced without such specific details. In other instances, well-known operations, components and elements have been described in detail so as not to obscure the embodiments in the description. It will be appreciated by those of ordinary skill in the art that the embodiments herein and shown are non-limiting examples, and thus, it can be appreciated that the specific structural and functional details disclosed herein may be representative and do not necessarily limit the scope of the embodiments.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A control device for a cutting machine, characterized by comprising:
the control button is arranged on a handle of the cutting machine and used for outputting a control instruction after being pressed; and
the control circuit is connected with the control button through a cable and is used for controlling the working state of the cutting machine;
the control circuit includes:
a power supply unit for supplying a three-phase alternating current signal;
the transformation unit is connected with the power supply unit and is used for performing voltage transformation on the three-phase alternating current signal and outputting a direct current signal;
the power output unit is connected with the power supply unit, the voltage transformation unit and the motor and used for receiving the three-phase alternating current signals and driving the motor; and
and the switch unit is connected with the control button, the voltage transformation unit and the power output unit, and is used for receiving the direct current signal and closing according to the control instruction so as to enable the power output unit to work after being conducted.
2. The control device of claim 1, wherein the control circuit further comprises:
the first display unit is connected with the transformation unit and used for displaying the working states of the power supply unit and the transformation unit; and
and the second display unit is connected with the switch unit and the power output unit and used for displaying the working states of the power output unit and the switch unit.
3. The control device according to claim 1, wherein the voltage transforming unit includes:
the transformer comprises a first fuse, a transformer, a first rectifier bridge and a second rectifier bridge;
the positive direct current output end of the first rectifier bridge is connected with the first end of the control button;
the first end of the first fuse is connected with the W-phase output end of the power supply unit, the first end of the primary coil of the transformer is connected with the V-phase output end of the power supply unit, and the second end of the first fuse is connected with the second end of the primary coil of the transformer; a first end of a first secondary coil of the transformer is connected with a first alternating current input end of the first rectifier bridge, and a second end of the first secondary coil of the transformer is connected with a second alternating current input end of the first rectifier bridge; the positive direct current output end and the negative direct current output end of the first rectifier bridge are connected with the switch unit;
the first end of a second secondary coil of the transformer is connected with the first alternating current input end of the second rectifier bridge, the second end of the second secondary coil of the transformer is connected with the second alternating current input end of the second rectifier bridge, the positive direct current output end of the second rectifier bridge is connected with the switch unit, and the negative direct current output end of the second rectifier bridge is connected with the power output unit.
4. The control device according to claim 3, wherein the switch unit includes:
an intermediate relay;
the first end of the coil of the intermediate relay is connected with the second end of the control button, and the second end of the coil of the intermediate relay is connected with the negative direct current output end of the first rectifier bridge;
and the first end of a normally open switch of the intermediate relay is connected with the anode output end of the second rectifier bridge, and the second end of the normally open switch of the intermediate relay is connected with the power output unit.
5. The control device according to claim 4, wherein the power output unit includes:
a second fuse, a third fuse, a fourth fuse and a contactor;
the first end of the coil of the contactor is connected with the second end of a normally open switch of the intermediate relay, and the second end of the coil of the contactor is connected with the negative direct current output end of the second rectifier bridge;
the first end of the second fuse is connected with the U-phase input end of the power supply unit, the second end of the second fuse is connected with the first end of the first contact of the contactor, and the second end of the first contact of the contactor is connected with the motor; the first end of the third fuse is connected with the V-phase input end of the power supply unit, the second end of the third fuse is connected with the first end of the second contact of the contactor, and the second end of the second contact of the contactor is connected with the motor; the first end of the fourth fuse is connected with the W-phase input end of the power supply unit, the second end of the fourth fuse is connected with the first end of the third contact of the contactor, and the second end of the third contact of the contactor is connected with the motor.
6. The control device of claim 3, wherein the first display unit comprises:
a first resistor and a first light emitting diode;
the first end of the first resistor is connected with the positive direct current output end of the first rectifier bridge, the second end of the first resistor is connected with the anode of the first light-emitting diode, and the cathode of the first light-emitting diode is connected with the negative direct current output end of the first rectifier bridge.
7. The control device according to claim 5, wherein the second display unit includes:
a second resistor and a second light emitting diode;
and the first end of the second resistor is connected with the second end of a normally open switch of the intermediate relay, the second end of the second resistor is connected with the anode of the second light-emitting diode, and the cathode of the second light-emitting diode is connected with the negative direct current output end of the second rectifier bridge.
8. The control device according to any one of claims 1 to 7, further comprising a bottom plate and a case;
the control circuit is arranged in the box body, and the control button is exposed out of the box body;
and the surface of the box body is provided with a power supply indicator light opening and a working indicator light opening.
9. The control device of claim 8, wherein the base plate has:
a plurality of fixing bolt holes for fixing the control device on the cutting machine by bolts;
a cable inlet for introducing a cable into the interior of the case to connect the cable with the power supply unit;
a power line outlet for leading a power line out of the case to connect the power output unit with the motor; and
and the cable access port is used for introducing the cable into the box body so as to connect the control circuit with the control button.
10. The control device of claim 8, wherein said housing and said floor are made of an insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920613089.7U CN210818745U (en) | 2019-04-29 | 2019-04-29 | Cutting machine control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920613089.7U CN210818745U (en) | 2019-04-29 | 2019-04-29 | Cutting machine control device |
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| CN210818745U true CN210818745U (en) | 2020-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920613089.7U Active CN210818745U (en) | 2019-04-29 | 2019-04-29 | Cutting machine control device |
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