CN217144936U - Drive controller of hot melt welding machine - Google Patents
Drive controller of hot melt welding machine Download PDFInfo
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- CN217144936U CN217144936U CN202220698645.7U CN202220698645U CN217144936U CN 217144936 U CN217144936 U CN 217144936U CN 202220698645 U CN202220698645 U CN 202220698645U CN 217144936 U CN217144936 U CN 217144936U
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- 239000012943 hotmelt Substances 0.000 title claims abstract description 19
- 238000003466 welding Methods 0.000 title claims abstract description 18
- 238000001914 filtration Methods 0.000 claims abstract description 31
- 238000005070 sampling Methods 0.000 claims abstract description 24
- 238000002844 melting Methods 0.000 claims abstract description 16
- 239000003990 capacitor Substances 0.000 claims description 76
- 230000003287 optical effect Effects 0.000 claims description 14
- 229910044991 metal oxide Inorganic materials 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 claims description 2
- 239000004065 semiconductor Substances 0.000 claims description 2
- 230000004927 fusion Effects 0.000 claims 10
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model provides a drive controller of hot melt welding machine, the controller includes: the device comprises a rectification filter circuit, a main control module, a high-frequency inverter circuit and a current sampling circuit; the rectification filter circuit is used for rectifying and filtering alternating current to obtain target direct current voltage; the high-frequency inverter circuit is used for converting target direct-current voltage into high-frequency alternating current according to the control signal output by the main control module, so that the hot-melting fixture transformer generates a high-frequency magnetic field according to the high-frequency alternating current for welding; the current sampling circuit is used for collecting the output current value of the high-frequency inverter circuit, so that the main control module outputs a corresponding control signal according to the output current value; the problem of prior art output fixed frequency's alternating current have output power and hang down or too high is solved, through the switching-over of the real-time control alternating current of the electric current size of high frequency inverter circuit output to the output frequency of adjustment alternating current has improved drive controller's work efficiency and range of application.
Description
Technical Field
The utility model relates to a drive controller technical field especially relates to a drive controller of hot melt welding machine.
Background
The hot melting welding machine is characterized in that a driving controller sends high-frequency alternating current to a transformer of a hot melting fixture, the transformer of the hot melting fixture converts high-frequency alternating current into a high-frequency magnetic field to heat the surface of a workpiece, the workpiece is fully melted and then is quickly bonded, a certain pressure is kept, and the purpose of welding is achieved after cooling.
At present, a drive controller of a hot melt welding machine usually outputs alternating current with fixed frequency, so that the problem of too low or too high output power exists, and the working efficiency and the application range of the drive controller are reduced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pair of drive controller of hot melt welding machine, it has solved prior art output fixed frequency's alternating current and has had output power to cross low or too high problem, the switching-over of electric current size real time control alternating current through the output of high frequency inverter circuit to adjustment alternating current's output frequency has improved drive controller's work efficiency and range of application.
The utility model provides a drive controller of hot melt welding machine, the controller includes: the device comprises a rectification filter circuit, a main control module, a high-frequency inverter circuit and a current sampling circuit; the input end of the rectification filter circuit is connected with an alternating current power supply when in use and is used for rectifying and filtering alternating current to obtain target direct current voltage; the control end of the high-frequency inverter circuit is connected with the main control module, the input end of the high-frequency inverter circuit is connected with the output end of the rectifying and filtering circuit, and the output end of the high-frequency inverter circuit is connected with the hot-melting fixture transformer when in use and is used for converting the target direct-current voltage into high-frequency alternating current according to a control signal output by the main control module so that the hot-melting fixture transformer generates a high-frequency magnetic field according to the high-frequency alternating current for welding; the input end of the current sampling circuit is connected with the output end of the high-frequency inverter circuit, and the output end of the current sampling circuit is connected with the main control module and used for collecting the output current value of the high-frequency inverter circuit, so that the main control module outputs a corresponding control signal according to the output current value; the main control module is also connected with the control end of the rectifying and filtering circuit and used for controlling the on-off state of the rectifying and filtering circuit according to the current working parameters of the hot-melt fixture transformer.
Optionally, the high frequency inverter circuit includes: the circuit comprises a first triode, a second triode, a first optocoupler, a second optocoupler, a first MOS (metal oxide semiconductor) tube, a second MOS tube, a first capacitor and a second capacitor; the base electrode of the first triode is connected with the first control end of the main control module, the emitting electrode of the first triode is grounded, the collector electrode of the first triode is connected with the input end of the first optocoupler, the output end of the first optocoupler is connected with the grid electrode of the first MOS tube, the drain electrode of the first MOS tube is connected with the positive electrode output end of the rectification filter circuit, the source electrode of the first MOS tube is connected with the first end of the first capacitor, and the second end of the first capacitor is the first output end of the high-frequency inverter circuit; the base of the second triode is connected with the second control end of the main control module, the emitting electrode of the second triode is grounded, the collecting electrode of the second triode is connected with the input end of the second optical coupler, the output end of the second optical coupler is connected with the grid electrode of the second MOS tube, the drain electrode of the second MOS tube is connected with the source electrode of the first MOS tube, the source electrode of the second MOS tube is connected with the first end of the second capacitor, the second end of the second capacitor is the second output end of the high-frequency inverter circuit, and the first end of the second capacitor is connected with the negative output end of the rectifier filter circuit.
Optionally, the high frequency inverter circuit further includes: the first end of the first protection module is connected with the output end of the first optical coupler, the second end of the first protection module is connected with the grid electrode of the first MOS tube, the first end of the second protection module is connected with the output end of the second optical coupler, and the second end of the second protection module is connected with the grid electrode of the second MOS tube.
Optionally, the rectifying and filtering circuit includes: the power supply comprises a power supply interface, a relay, a first common-mode inductor, a rectifier bridge and a third capacitor; the input end of the power interface is connected with an alternating current power supply when in use; the first end of a coil of the relay is connected with a power supply, the second end of the coil of the relay is connected with the main control module, and the first end of a switch of the relay is connected with the first output end of the power interface; a first input end of the first common-mode inductor is connected with a second end of a switch of the relay, a second input end of the first common-mode inductor is connected with a second output end of the power interface, and an output end of the first common-mode inductor is connected with an input end of the rectifier bridge; and the first end of the third capacitor is connected with the first output end of the rectifier bridge, and the second end of the third capacitor is connected with the second output end of the rectifier bridge.
Optionally, the rectifying and filtering circuit further includes: the thermistor, the fuse and the fourth capacitor; the first end of the thermistor is connected with the first end of the switch of the relay, the second end of the thermistor is connected with the second end of the switch of the relay, the first end of the fuse and the first end of the fourth capacitor are respectively connected with the second output end of the power interface, the second end of the fuse is connected with the second input end of the first common-mode inductor, and the second end of the fourth capacitor is connected with the first output end of the power interface.
Optionally, the rectifying and filtering circuit further includes: a second common mode inductor and a fifth capacitor; the input end of the second common mode inductor is connected with the third capacitor in parallel, and the output end of the second common mode inductor is connected with the fifth capacitor in parallel.
Optionally, the current sampling circuit comprises: the current transformer, the first series diode, the second series diode and the first resistor; the output end of the high-frequency inverter circuit is coupled with the primary coil of the transformer through the current transformer, the first end of the secondary coil of the transformer is connected with the first end of the first series diode, and the second end of the secondary coil of the transformer is connected with the first end of the second series diode; the second end of the first series diode and the second end of the second series diode are respectively grounded, the third end of the first series diode and the third end of the second series diode are respectively connected with the first end of the first resistor, and the second end of the first resistor is connected with the main control module.
Optionally, the current sampling circuit further comprises: the second resistor, the third resistor, the fourth resistor, the sixth capacitor, the seventh capacitor and the eighth capacitor; the third end of the second series diode is grounded through the second resistor; the third resistor is connected with the sixth capacitor in parallel, and the first end of the secondary coil of the transformer is grounded through the third resistor; the fourth resistor is connected with the seventh capacitor in parallel, and the second end of the secondary coil of the transformer is grounded through the fourth resistor; and the first end of the eighth capacitor is connected with the second end of the first resistor, and the second end of the eighth capacitor is grounded.
Optionally, the controller further comprises: the input end of the clamp data acquisition circuit is connected with the hot-melting clamp transformer when in use, and the output end of the clamp data acquisition circuit is connected with the main control module and used for acquiring the current working parameters of the hot-melting clamp transformer, so that the main control module controls the on-off state of the rectifying and filtering circuit according to the current working parameters.
Optionally, the controller further comprises: and the input end of the display module is connected with the main control module and is used for displaying the parameter data output by the main control module.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model rectifies and filters the municipal alternating current output by the external alternating current power supply through the rectifying and filtering circuit to obtain the target direct current voltage; the high-frequency inverter circuit converts the target direct-current voltage into high-frequency alternating current according to a control signal output by the main control module, so that the hot-melting fixture transformer generates a high-frequency magnetic field according to the high-frequency alternating current for welding; the current sampling circuit is used for acquiring the magnitude of current output by the high-frequency inverter circuit in real time, so that the main control module outputs a corresponding control signal, and further the direction of alternating current output by the high-frequency inverter circuit is adjusted; therefore, the utility model discloses a current size real time control alternating current's of high frequency inverter circuit output switching-over to adjustment alternating current's output frequency, the alternating current who has solved prior art output fixed frequency has output power to cross the problem of low or too high, has improved drive controller's work efficiency and range of application.
2. The utility model discloses the current operating parameter of hot melt anchor clamps transformer that host system obtained, control rectifier and filter circuit's break-make state to reach the protection drive controller's purpose.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a driving controller of a hot melt welding machine according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a high-frequency inverter circuit according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a rectifying and filtering circuit according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of a current sampling circuit according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The functional units of the same reference numerals in the examples of the present invention have the same and similar structures and functions.
Example one
Fig. 1 is a schematic structural diagram of a drive controller of a hot melt welding machine provided in an embodiment of the present invention, as shown in fig. 1, the drive controller 100 of the hot melt welding machine provided in this embodiment specifically includes:
the rectifier filter circuit 110, the main control module 120, the high-frequency inverter circuit 130 and the current sampling circuit 140;
the input end of the rectifying and filtering circuit 110 is connected with the alternating current power supply 200 when in use, and is used for rectifying and filtering alternating current to obtain target direct current voltage;
the control end of the high-frequency inverter circuit 130 is connected to the main control module 120, the input end of the high-frequency inverter circuit 130 is connected to the output end of the rectifier filter circuit 110, and the output end of the high-frequency inverter circuit 130 is connected to the hot-melt fixture transformer 300 when in use, and is configured to convert the target dc voltage into a high-frequency alternating current according to a control signal output by the main control module 120, so that the hot-melt fixture transformer 300 generates a high-frequency magnetic field according to the high-frequency alternating current for welding;
the input end of the current sampling circuit 140 is connected to the output end of the high-frequency inverter circuit 130, and the output end of the current sampling circuit 140 is connected to the main control module 120, and is configured to collect an output current value of the high-frequency inverter circuit 130, so that the main control module 120 outputs a corresponding control signal according to the output current value;
the main control module 120 is further connected to the control end of the rectifying and filtering circuit 110, and is configured to control the on-off state of the rectifying and filtering circuit 110 according to the current working parameter of the hot-melt fixture transformer 300.
It should be noted that the utility model rectifies and filters the municipal alternating current output by the external alternating current power supply 200 through the rectifying and filtering circuit 110 to obtain the target direct current voltage; the high-frequency inverter circuit 130 converts the target dc voltage into a high-frequency alternating current according to a control signal output by the main control module 120, so that the hot-melt fixture transformer 300 generates a high-frequency magnetic field according to the high-frequency alternating current for welding; the current sampling circuit 140 is used for collecting the current output by the high-frequency inverter circuit 130 in real time, so that the main control module 120 outputs a corresponding control signal, and further the direction of the alternating current output by the high-frequency inverter circuit 130 is adjusted; therefore, the utility model discloses a current size real time control alternating current's of high frequency inverter circuit 130 output switching-over to adjustment alternating current's output frequency, the alternating current who has solved prior art output fixed frequency has output power to cross the problem of low or too high, has improved drive controller's work efficiency and range of application.
Further, the utility model discloses the current operating parameter of hot melt anchor clamps transformer 300 that host system 120 obtained, control the break-make state of rectification filter circuit 110 to reach the protection drive controller's purpose.
Wherein the current operating parameters include, but are not limited to, operating voltage, operating current, and ambient temperature.
Example two
Fig. 2 is a schematic circuit diagram of a high-frequency inverter circuit according to an embodiment of the present invention; as shown in fig. 2, in the present embodiment, the high frequency inverter circuit 130 includes:
the transistor comprises a first triode Q1, a second triode Q2, a first optical coupler PC1, a second optical coupler PC2, a first MOS tube M1, a second MOS tube M2, a first capacitor C1 and a second capacitor C2; a base electrode of the first triode Q1 is connected to the first control end of the main control module 120, an emitter electrode of the first triode Q1 is grounded, a collector electrode of the first triode Q1 is connected to an input end of the first optocoupler PC1, an output end of the first optocoupler PC1 is connected to a gate electrode of the first MOS transistor M1, a drain electrode of the first MOS transistor M1 is connected to an anode output end of the rectifying and filtering circuit 110, a source electrode of the first MOS transistor M1 is connected to a first end of the first capacitor C1, and a second end of the first capacitor C1 is a first output end of the high-frequency inverter circuit 130; the base of the second triode Q2 is connected to the second control end of the main control module 120, the emitter of the second triode Q2 is grounded, the collector of the second triode Q2 is connected to the input of the second optical coupler PC2, the output of the second optical coupler PC2 is connected to the gate of the second MOS transistor M2, the drain of the second MOS transistor M2 is connected to the source of the first MOS transistor M1, the source of the second MOS transistor M2 is connected to the first end of the second capacitor C2, the second end of the second capacitor C2 is the second output end of the high-frequency inverter circuit 130, and the first end of the second capacitor C2 is further connected to the negative output end of the rectifier and filter circuit 110.
It should be noted that in this embodiment, the control signal output by the main control module 120 is amplified by the first transistor Q1 and the second transistor Q2, and the first optocoupler PC1 and the second optocoupler PC2 drive the first MOS transistor M1 and the second MOS transistor M2 to be turned on or turned off by isolation coupling.
When the first output end of the main control module 120 outputs a high level and the second output end outputs a low level, the first triode Q1 is turned on, the second triode Q2 is turned off, so that the first MOS transistor M1 is turned on, the second MOS transistor M2 is turned off, the direct current output by the rectifying and filtering circuit 110 charges the first capacitor C1 through the first MOS transistor M1, the charging current returns to the second capacitor C2 through the hot-melting clamp transformer and charges, and the charging current in the line is detected through the current sampling circuit; when the current is very small or equal to 0, the first output end of the main control module 120 outputs a low level, the second output end outputs a high level, the first triode Q1 is cut off, the second triode Q2 is switched on, so that the first MOS transistor M1 is cut off, the second MOS transistor M2 is switched on, the first capacitor C1 discharges through the second MOS transistor M2, the discharging current discharges through the hot-melt clamp transformer and the second capacitor C2, the discharging current in the circuit is detected through the current sampling circuit, and when the current is very small or equal to 0, the first MOS transistor M1 is switched on and the second MOS transistor M2 is cut off.
Therefore, the repeated capacitor is charged and discharged through the process to form high-frequency alternating current in the circuit, and a high-frequency magnetic field is generated through the heat capacity clamp transformer to heat the steel belt in the plastic steel pipe. The current sampling circuit detects the output current to control the on-off of the first MOS tube M1 and the second MOS tube M2, so that an inversion mode of zero current off and on is obtained, the radiation interference, the loss and the heat productivity of the off and on MOS tubes are reduced, the working efficiency of the circuit is increased, and the area of a radiator can be reduced under the same power.
Further, the high frequency inverter circuit 130 further includes: the first end of the first protection module 131 is connected with the output end of the first optical coupler PC1, the second end of the first protection module 131 is connected with the gate of the first MOS transistor M1, the first end of the second protection module 132 is connected with the output end of the second optical coupler PC2, and the second end of the second protection module 132 is connected with the gate of the second MOS transistor M2.
It should be noted that, as shown in fig. 2, in the embodiment, the MOS transistor is prevented from being damaged by problems such as overvoltage and overcurrent through the protection module formed by a plurality of resistors, capacitors, and diodes, so as to achieve the function of protecting the MOS transistor.
EXAMPLE III
Fig. 3 is a schematic circuit diagram of a rectifying and filtering circuit according to an embodiment of the present invention; as shown in fig. 3, in the present embodiment, the rectifying and filtering circuit 110 includes:
the power supply interface P1, the relay K1, the first common mode inductor EM1, the rectifier bridge D1 and the third capacitor C3; the input end of the power supply interface P1 is connected with an alternating current power supply 200 when in use; a first end of a coil of the relay K1 is connected with a power supply, a second end of a coil of the relay K1 is connected with the main control module 120, and a first end of a switch of the relay K1 is connected with a first output end of the power interface P1; a first input end of the first common-mode inductor EM1 is connected to a second switch end of the relay K1, a second input end of the first common-mode inductor EM1 is connected to a second output end of the power interface P1, and an output end of the first common-mode inductor EM1 is connected to an input end of the rectifier bridge D1; a first terminal of the third capacitor C3 is connected to the first output terminal of the rectifier bridge D1, and a second terminal of the third capacitor C3 is connected to the second output terminal of the rectifier bridge D1.
In this embodiment, the rectifying and filtering circuit 110 further includes: a thermistor RT1, a fuse FU and a fourth capacitor C4; the first end of the thermistor RT1 is connected with the first end of the switch of the relay K1, the second end of the thermistor RT1 is connected with the second end of the switch of the relay K1, the first end of the fuse FU and the first end of the fourth capacitor C4 are respectively connected with the second output end of the power interface P1, the second end of the fuse FU is connected with the second input end of the first common mode inductor EM1, and the second end of the fourth capacitor C4 is connected with the first output end of the power interface P1.
In this embodiment, the rectifying and filtering circuit 110 further includes: a second common mode inductance EM2 and a fifth capacitance C5; an input end of the second common mode inductor EM2 is connected in parallel with the third capacitor C3, and an output end of the second common mode inductor EM2 is connected in parallel with the fifth capacitor C5.
It should be noted that, the external ac power supply 200 is introduced from the power interface P1P1, and the thermistor RT1 and the fuse FU connected in series prevent the short circuit of the circuit at the moment of power-on; when the circuit works normally, the main control module 120 controls the relay K1 to pull in the switch, so that the rectifying and filtering circuit 110 is conducted, the rectifying and filtering circuit outputs the rectified voltage normally, and when the current detected by the main control module 120 exceeds the limit or the voltage is too high, the relay K1 is controlled to release the switch, so that the rectifying and filtering circuit 110 is disconnected, and the purpose of protecting the driving controller is achieved.
Furthermore, the alternating current of the present embodiment is filtered by the first common mode inductor EM1, is connected to the rectifier bridge D1 and converted into direct current, and then is filtered by the third capacitor C3, the second common mode inductor EM2 is filtered by interference, and the fifth capacitor C5 is filtered again, so as to output a smooth direct current voltage.
Example four
Fig. 4 is a schematic circuit diagram of a current sampling circuit according to an embodiment of the present invention; as shown in fig. 4, the current sampling circuit 140 includes:
the device comprises a current transformer LCT1, a transformer VCT1, a first series diode D2, a second series diode D3 and a first resistor R1; the output end of the high-frequency inverter circuit is coupled with the primary coil of the transformer VCT1 through the current transformer LCT1, the first end of the secondary coil of the transformer VCT1 is connected with the first end of the first series diode D2, and the second end of the secondary coil of the transformer VCT1 is connected with the first end of the second series diode D3; a second end of the first series diode D2 and a second end of the second series diode D3 are respectively grounded, a third end of the first series diode D2 and a third end of the second series diode D3 are respectively connected to a first end of the first resistor R1, and a second end of the first resistor R1 is connected to the main control module.
In this embodiment, the current sampling circuit 140 further includes: a second resistor R2, a third resistor R3, a fourth resistor R4, a sixth capacitor C6, a seventh capacitor C7 and an eighth capacitor C8; the third end of the second series diode D3 is grounded through the second resistor R2; the third resistor R3 is connected in parallel with the sixth capacitor C6, and the first end of the secondary coil of the transformer VCT1 is grounded through the third resistor R3; the fourth resistor R4 is connected in parallel with the seventh capacitor C7, and the second end of the secondary coil of the transformer VCT1 is grounded through the fourth resistor R4; a first end of the eighth capacitor C8 is connected to the second end of the first resistor R1, and a second end of the eighth capacitor C8 is grounded.
It should be noted that the output current of the high-frequency inverter circuit is isolated and coupled to the transformer VCT1 through the current transformer LCT1, and is coupled and connected to the first series diode D2 and the second series diode D3 again through the transformer VCT1, and is connected to the main control module through the voltage division of the first resistor R1, so that the main control module obtains the output current value of the high-frequency inverter circuit.
In another embodiment of the present invention, the controller further comprises: the input end of the clamp data acquisition circuit is connected with the hot-melting clamp transformer when in use, and the output end of the clamp data acquisition circuit is connected with the main control module and used for acquiring the current working parameters of the hot-melting clamp transformer, so that the main control module controls the on-off state of the rectifying and filtering circuit according to the current working parameters.
In another embodiment of the present invention, the controller further comprises: and the input end of the display module is connected with the main control module and is used for displaying the parameter data output by the main control module.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only exemplary of the invention, and is intended to enable those skilled in the art to understand and implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A drive controller for a heat fusion welder, the controller comprising:
the device comprises a rectification filter circuit, a main control module, a high-frequency inverter circuit and a current sampling circuit;
the input end of the rectification filter circuit is connected with an alternating current power supply when in use and is used for rectifying and filtering alternating current to obtain target direct current voltage;
the control end of the high-frequency inverter circuit is connected with the main control module, the input end of the high-frequency inverter circuit is connected with the output end of the rectifying and filtering circuit, and the output end of the high-frequency inverter circuit is connected with the hot-melting fixture transformer when in use and is used for converting the target direct-current voltage into high-frequency alternating current according to a control signal output by the main control module so that the hot-melting fixture transformer generates a high-frequency magnetic field according to the high-frequency alternating current for welding;
the input end of the current sampling circuit is connected with the output end of the high-frequency inverter circuit, and the output end of the current sampling circuit is connected with the main control module and used for collecting the output current value of the high-frequency inverter circuit, so that the main control module outputs a corresponding control signal according to the output current value;
the main control module is also connected with the control end of the rectifying and filtering circuit and used for controlling the on-off state of the rectifying and filtering circuit according to the current working parameters of the hot-melt fixture transformer.
2. The drive controller of a heat fusion welder of claim 1, wherein the high frequency inverter circuit comprises:
the circuit comprises a first triode, a second triode, a first optocoupler, a second optocoupler, a first MOS (metal oxide semiconductor) tube, a second MOS tube, a first capacitor and a second capacitor;
the base electrode of the first triode is connected with the first control end of the main control module, the emitting electrode of the first triode is grounded, the collecting electrode of the first triode is connected with the input end of the first optocoupler, the output end of the first optocoupler is connected with the grid electrode of the first MOS tube, the drain electrode of the first MOS tube is connected with the positive electrode output end of the rectification filter circuit, the source electrode of the first MOS tube is connected with the first end of the first capacitor, and the second end of the first capacitor is the first output end of the high-frequency inverter circuit;
the base of the second triode is connected with the second control end of the main control module, the emitting electrode of the second triode is grounded, the collecting electrode of the second triode is connected with the input end of the second optical coupler, the output end of the second optical coupler is connected with the grid electrode of the second MOS tube, the drain electrode of the second MOS tube is connected with the source electrode of the first MOS tube, the source electrode of the second MOS tube is connected with the first end of the second capacitor, the second end of the second capacitor is the second output end of the high-frequency inverter circuit, and the first end of the second capacitor is connected with the negative output end of the rectifier filter circuit.
3. The drive controller of a heat fusion welder of claim 2, wherein the high frequency inverter circuit further comprises:
a first protection module and a second protection module,
the first end of the first protection module is connected with the output end of the first optical coupler, the second end of the first protection module is connected with the grid electrode of the first MOS tube, the first end of the second protection module is connected with the output end of the second optical coupler, and the second end of the second protection module is connected with the grid electrode of the second MOS tube.
4. The drive controller for a heat fusion welder of claim 1, wherein the rectifier filter circuit comprises:
the power supply comprises a power supply interface, a relay, a first common-mode inductor, a rectifier bridge and a third capacitor;
the input end of the power interface is connected with an alternating current power supply when in use;
a first end of a coil of the relay is connected with a power supply, a second end of the coil of the relay is connected with the main control module, and a first end of a switch of the relay is connected with a first output end of the power interface;
a first input end of the first common-mode inductor is connected with a second end of a switch of the relay, a second input end of the first common-mode inductor is connected with a second output end of the power interface, and an output end of the first common-mode inductor is connected with an input end of the rectifier bridge;
and the first end of the third capacitor is connected with the first output end of the rectifier bridge, and the second end of the third capacitor is connected with the second output end of the rectifier bridge.
5. The drive controller for a heat fusion welder of claim 4, wherein the rectifier filter circuit further comprises:
the thermistor, the fuse and the fourth capacitor;
the first end of the thermistor is connected with the first end of the switch of the relay, the second end of the thermistor is connected with the second end of the switch of the relay, the first end of the fuse and the first end of the fourth capacitor are respectively connected with the second output end of the power interface, the second end of the fuse is connected with the second input end of the first common-mode inductor, and the second end of the fourth capacitor is connected with the first output end of the power interface.
6. The drive controller for a heat fusion welder of claim 5, wherein the rectifier filter circuit further comprises:
a second common mode inductor and a fifth capacitor;
the input end of the second common mode inductor is connected with the third capacitor in parallel, and the output end of the second common mode inductor is connected with the fifth capacitor in parallel.
7. The drive controller of a heat fusion welder of claim 1, wherein the current sampling circuit comprises:
the current transformer, the first series diode, the second series diode and the first resistor;
the output end of the high-frequency inverter circuit is coupled with the primary coil of the transformer through the current transformer, the first end of the secondary coil of the transformer is connected with the first end of the first series diode, and the second end of the secondary coil of the transformer is connected with the first end of the second series diode;
the second end of the first series diode and the second end of the second series diode are respectively grounded, the third end of the first series diode and the third end of the second series diode are respectively connected with the first end of the first resistor, and the second end of the first resistor is connected with the main control module.
8. The drive controller of a heat fusion welder of claim 7, wherein the current sampling circuit further comprises:
the second resistor, the third resistor, the fourth resistor, the sixth capacitor, the seventh capacitor and the eighth capacitor;
the third end of the second series diode is grounded through the second resistor;
the third resistor is connected with the sixth capacitor in parallel, and the first end of the secondary coil of the transformer is grounded through the third resistor; the fourth resistor is connected with the seventh capacitor in parallel, and the second end of the secondary coil of the transformer is grounded through the fourth resistor;
and the first end of the eighth capacitor is connected with the second end of the first resistor, and the second end of the eighth capacitor is grounded.
9. The drive controller of the heat fusion welder of any one of claims 1-8, wherein the controller further comprises:
the input end of the clamp data acquisition circuit is connected with the hot-melting clamp transformer when in use, and the output end of the clamp data acquisition circuit is connected with the main control module and used for acquiring the current working parameters of the hot-melting clamp transformer, so that the main control module controls the on-off state of the rectifying and filtering circuit according to the current working parameters.
10. The drive controller of the heat fusion welder of any one of claims 1-8, wherein the controller further comprises:
and the input end of the display module is connected with the main control module and is used for displaying the parameter data output by the main control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220698645.7U CN217144936U (en) | 2022-03-28 | 2022-03-28 | Drive controller of hot melt welding machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220698645.7U CN217144936U (en) | 2022-03-28 | 2022-03-28 | Drive controller of hot melt welding machine |
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| CN217144936U true CN217144936U (en) | 2022-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220698645.7U Active CN217144936U (en) | 2022-03-28 | 2022-03-28 | Drive controller of hot melt welding machine |
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| CN (1) | CN217144936U (en) |
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