Radio frequency welding controller

Abstract

A radio frequency welding controller comprises a wireless charging receiving end module, an adjusting mechanism, a comparison circuit and an adjusting circuit. The adjusting mechanism comprises a motor speed reducing device, a plurality of supporting frames and an annular ring, the lower end of the annular ring is installed at the side end of a control system adjusting handle of the radio frequency welding device, and the lower end of a fixing sleeve at the lower end of a rotating shaft of the motor speed reducing device tightly sleeves the outer side of the adjusting handle. The comparison circuit, the adjusting circuit and the wireless charging receiving end module are installed in the radio frequency welding equipment and electrically connected. The novel wireless charging receiving end module can monitor a wireless radio frequency electric wave signal generated by working of radio frequency welding equipment in real time, and when a control system controls output high-frequency current to be larger than or lower than a threshold value, the wireless charging receiving end module can charge the radio frequency welding equipment under the combined action of the two comparison circuits and the adjusting circuit. The high-frequency current controlled and output by the control system is adjusted to be low or high in time through motor speed reduction equipment and the like, convenience is correspondingly brought to workers, and the welding work efficiency and the welding workpiece quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding auxiliary control equipment, in particular to a radio frequency welding controller. Background Art

[0002] The radio frequency welding equipment is a welding method that uses the resistance heat generated by high-frequency current passing through the contact surface of the workpiece, and forms a connection of the workpiece metal by applying pressure (or not applying pressure). During operation, the control system of the radio frequency welding equipment converts alternating current into high-voltage direct current, and then generates radio frequency waves through an oscillator or resonator. Under the combined action of other supporting mechanisms of the radio frequency welding equipment, the radio frequency waves are converted into high-frequency current to heat the welding part of the workpiece, so that the welding parts of the workpiece are welded together. Specifically, the magnitude of the resistance heat generated by the high-frequency current of the radio frequency welding equipment can be adjusted by the frequency of the output high-frequency current through its own supporting control system, so as to achieve an accurate welding process (the operator manually turns the handle of the control system clockwise or counterclockwise, the high-frequency current is adjusted larger or smaller, and then the heat output by the radio frequency welding equipment will become larger or smaller); further, because the control system can adjust and control the magnitude of the output high-frequency current, it prevents the temperature of the welding part of the workpiece from being too high or too low to be effectively welded together, and ensures the welding quality.

[0003] Although the existing radio frequency welding equipment can adjust the magnitude of the output high-frequency current by adjusting the handle of the control system, due to its structural and functional limitations, there are still the following technical problems. Specifically, since it is manually adjusted by the operator to adjust the magnitude of the output high-frequency current by turning the handle of the control system, when the operator has insufficient work experience, adjusting the high or low output high-frequency current will have an adverse impact on the welding quality of the workpiece. In addition, the manual adjustment method is also inconvenient for the operator, and repeated adjustment due to insufficient experience will also result in relatively low work efficiency. In summary, it is very necessary to provide a controller that can automatically adjust the handle of the control system, the radio frequency welding equipment can output stable high-frequency current, and ensure the welding quality of the workpiece. Summary of the Utility Model

[0004] In order to overcome the disadvantages that the existing radio frequency welding equipment needs to be manually adjusted by the operator to adjust the magnitude of the output high-frequency current due to structural limitations, the utility model provides a radio frequency welding controller that can monitor the radio frequency wave signal generated by the operation of the radio frequency welding equipment in real time under the combined action of relevant mechanisms, and can timely adjust the high-frequency current output by the control system to be lower or higher when the high-frequency current output by the control system is greater than or lower than the threshold value, which brings convenience to the operator, improves the welding work efficiency, and improves the welding quality of the radio frequency welding equipment for workpieces.

[0005] The technical solution adopted by the present utility model to solve its technical problems is as follows:

[0006] A radio frequency welding controller includes a wireless charging receiving end module, and is characterized in that it further has an adjusting mechanism, a comparison circuit, and an adjusting circuit; the adjusting mechanism includes a motor reduction device, a support frame, and an annular ring. There are multiple support frames. The upper ends of the multiple support frames are installed on the outer side of the housing of the motor reduction device, the lower ends of the multiple support frames are installed on the upper end of the annular ring, the lower end of the annular ring is installed on the side end of the control handle of the radio frequency welding device control system, and a fixing sleeve is installed at the lower end of the rotating shaft of the motor reduction device. The lower end of the fixing sleeve is installed on the outer side of the control handle; there are at least two sets of the comparison circuit and the adjusting circuit respectively. The comparison circuit, the adjusting circuit, and the wireless charging receiving end module are installed in the radio frequency welding device; the power output end of the wireless charging receiving end module and the signal input ends of the two comparison circuits are electrically connected respectively, the signal output ends of the two comparison circuits and the signal input ends of the two adjusting circuits are electrically connected respectively, and the power output ends of the two adjusting circuits and the power input end of the motor reduction device are electrically connected respectively.

[0007] Further, the power output end of the wireless charging receiving end module does not have a voltage stabilizing function.

[0008] Further, the comparison circuit includes an adjustable resistor, a resistor, and a three-terminal voltage comparator connected electrically. The positive power input end of the three-terminal voltage comparator is connected to one end of the first resistor. The other end of the first resistor is connected to one end of the second resistor and one end of the adjustable resistor. The other end of the first resistor is connected to the negative power input end of the three-terminal voltage comparator.

[0009] Further, the adjusting circuit includes a resistor, a triode, and a relay connected electrically. The positive power input end of the relay is connected to the positive control power input end. The collector of the triode is connected to the negative power input end of the relay. One end of the resistor is connected to the base of the triode. The emitter of the triode is connected to the negative control power input end of the relay.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows: The present utility model is used for radio frequency welding equipment. The wireless charging receiving end module can monitor the wireless radio frequency wave signals generated by the operation of the radio frequency welding equipment in real time. When the high-frequency current controlled and output by the control system is greater than or lower than the threshold value, under the combined action of the two comparison circuits and the adjusting circuit, the high-frequency current controlled and output by the control system can be adjusted low or high in time through the motor reduction device, etc., which brings convenience to the staff, improves the welding work efficiency, and improves the quality of the workpieces welded by the radio frequency welding equipment. Description of the Drawings

[0011] The following will further illustrate the present utility model in conjunction with the drawings and embodiments.

[0012] Figure 1 It is a schematic diagram of the overall structure and partial enlarged structure of the present utility model.

[0013] Figure 2 It is the circuit diagram of the present utility model.

[0014] Figure 3 It is the actual photo of the radio frequency welding equipment. Specific implementation manners

[0015] Figure 1 、 2 As shown in , a radio frequency welding controller includes a power supply module A, a wireless charging receiving end module A1, and further has an adjusting mechanism 1, a comparison circuit 2, and an adjusting circuit 3; the adjusting mechanism includes a motor reduction device M1, a support frame 101, and a hollow ring 102. There are three support frames 101. The upper ends of the three support frames 101 are annularly distributed and welded to the lower end of the outer side of the housing of the motor reduction device M1. The lower ends of the three support frames 101 are welded to the upper end of the outer side of the hollow ring 102. The lower end of the ring 102 is adhesively bonded to the front side end of the housing of the radio frequency welding equipment 4 at the control system and the adjusting handle 103 of the radio frequency welding equipment. A hollow ring-shaped plastic fixing sleeve 104 is welded to the lower end of the rotating shaft of the motor reduction device M1. The lower end of the fixing sleeve 104 is tightly sleeved on the outer side end of the adjusting handle 103. There are two sets of the comparison circuit 2 and the adjusting circuit 3 respectively. The comparison circuit 2, the adjusting circuit 3, and the power supply module A are installed in the housing of the radio frequency welding equipment 4. The wireless charging receiving end module A1 is installed at the oscillator side end (with a spacing of 2 mm) of the radio frequency welding equipment 4. The power output end of the wireless charging receiving end module A1 does not have a voltage stabilizing function.

[0016] Figure 1 、 2As shown in the figure, the first comparison circuit includes an adjustable resistor RP1, resistors R1 and R2, and a three-terminal voltage comparator A2 connected by circuit board wiring. The positive power input terminal 2 of the three-terminal voltage comparator A2 is connected to one end of the first resistor R2. The other end of the first resistor R2 is connected to one end of the second resistor R1 and one end of the adjustable resistor RP1. The other end of the first resistor R1 is connected to the negative power input terminal 3 of the three-terminal voltage comparator A2. The second comparison circuit includes an adjustable resistor RP2, resistors R3 and R4, and a three-terminal voltage comparator A3 connected by circuit board wiring. The positive power input terminal 2 of the three-terminal voltage comparator A3 is connected to one end of the first resistor R4. The other end of the first resistor R4 is connected to one end of the second resistor R3 and one end of the adjustable resistor RP2. The other end of the first resistor R2 is connected to the negative power input terminal 3 of the three-terminal voltage comparator A3. The first adjustment circuit includes a resistor R5, a triode Q1, and a relay K1 connected by circuit wiring. The positive power input terminal of the relay K1 is connected to the positive control power input terminal. The collector of the triode Q1 is connected to the negative power input terminal of the relay K1. One end of the resistor R5 is connected to the base of the triode Q1. The emitter of the triode Q1 is connected to the negative control power input terminal of the relay K1. The second adjustment circuit includes a resistor R6, a triode Q, and a relay K connected by circuit wiring. The positive power input terminal of the relay K is connected to the positive control power input terminal. The collector of the triode Q is connected to the negative power input terminal of the relay K. One end of the resistor R6 is connected to the base of the triode Q. The emitter of the triode Q is connected to the negative control power input terminal of the relay K.

[0017] Figure 1 , 2 As shown in the figure, the power input terminals 1 and 2 of the power supply module A are respectively connected to the two poles of the AC 220V power supply through wires. The power output terminals 3 and 4 of the power supply module A are respectively connected to the other end of the resistor R1 and the other end of the resistor R3 of the comparison circuit, the positive power input terminal of the relay K1 of the power input terminal of the adjustment circuit and the emitter of the triode Q1, and the positive power input terminal of the relay K and the emitter of the triode Q through wires. The power output terminals 1 and 2 of the wireless charging receiver module A1 are respectively connected to the adjustable resistor RP1 of the signal input terminal of the two comparison circuits and the other end of the resistor R1, and the adjustable resistor RP1 and the other end of the resistor R3 through wires. The signal output terminals 1 of the two comparison circuits, the 1-foot of the three-terminal voltage comparators A2 and A3 are respectively connected to the other ends of the resistors R5 and R6 of the signal input terminals of the two adjustment circuits through wires. The two normally open contact terminals of the relay K1 at the power output terminal of the two adjustment circuits and the two normally closed contact terminals of the relay K are respectively connected to the positive and negative and negative-positive power input terminals of the motor reduction device M1 through wires.

[0018] Figure 1 , 2As shown in [figure], after the AC 220V power supply enters the power input terminal of power module A, the stable DC 12V power supply is output from pins 3 and 4 of power module A and enters the power input terminals of the two comparison circuits and the adjustment circuit. Specifically, when the radio frequency welding equipment works, its control system converts alternating current into high-voltage direct current, and then generates radio frequency waves through an oscillator or resonator. Under the combined action of other supporting equipment of the radio frequency welding equipment, the radio frequency waves are converted into high-frequency current to heat the welding part of the workpiece, so that the welding parts of the workpiece are welded together; the resistance heat generated by the high-frequency current of the radio frequency welding equipment can be adjusted by its own supporting control system to adjust the frequency of the output high-frequency current, so as to achieve an accurate welding process; further, since the control system can realize the adjustment and control of the output high-frequency current size, it prevents the temperature of the welding part of the workpiece from being too high or too low to be effectively welded together, ensuring the welding quality. In this new type, while the radio frequency waves are converted into high-frequency current, the radio frequency waves will be received by the wireless charging receiving module A1. Under the action of the internal circuit of the wireless charging receiving module A1, the unregulated DC power supply is output from pins 1 and 2 of the wireless charging receiving module A1 and enters the other ends of the adjustable resistor RP1 and resistor R1, the adjustable resistor RP2 and resistor R3 of the two comparison circuits. When the new type actually works, when the control system controls the relevant components so that the radio frequency waves are converted into high-frequency current below the highest threshold (set by the adjustable resistor RP1, the working principle will be introduced later, for example, the radio frequency waves are lower than 27.13 MHz), the voltage signal output by the wireless charging receiving module A1 is divided by the adjustable resistor RP1 and resistor R1, and the resistor R2 reduces the voltage and limits the current and enters pin 2 of the three-terminal voltage comparator A2, which is lower than the 4.75V threshold voltage inside the three-terminal voltage comparator A2. There is no output at pin 1 of the three-terminal voltage comparator A2, and the motor reduction device M1 will not be powered on to work. When the control system controls the relevant components so that the radio frequency waves are converted into high-frequency current above the highest threshold (for example, the radio frequency waves are higher than 27.13 MHz), the voltage signal output by the wireless charging receiving module A2 is divided by the adjustable resistor RP1 and resistor R1, and the resistor R2 reduces the voltage and limits the current and enters pin 2 of the three-terminal voltage comparator A2, which is higher than the 4.75V threshold voltage inside the three-terminal voltage comparator A2. A high level is output at pin 1 of the three-terminal voltage comparator A2, and the high level reduces the voltage and limits the current through the resistor R5 and enters the base of the triode Q1. The triode Q1 conducts and the collector outputs a low level and enters the negative power input terminal of the relay K1. The relay K1 is powered on and its two control power input terminals and two normally open contact terminals are closed respectively. Further, the positive and negative power input terminals of the motor reduction device M1 are powered on, and its power output shaft drives the adjustment handle 103 of the control system of the radio frequency welding equipment to gradually rotate counterclockwise, and the control system gradually controls the frequency of the output high-frequency current to become smaller.When the control system controls the relevant components again so that the radio frequency wave is converted into high-frequency current below the highest threshold, the voltage at pin 2 of the three-terminal voltage comparator A2 is lower than the 4.75V threshold voltage inside the three-terminal voltage comparator A2 again, and the output of the high level at pin 1 of the three-terminal voltage comparator A2 stops again. The control system handle no longer rotates, and the control system controls the output of radio frequency waves not exceeding 27.13MHz. The radio frequency welding equipment performs welding operations based on the stable high-frequency current.

[0019] Figure 1 , 2 As shown in 2 , when the control system controls the relevant components so that the radio frequency wave is converted into high-frequency current above the lowest threshold (set by the adjustable resistor RP2, and the working principle will be introduced later, for example, the radio frequency wave is higher than 27.11MHz), the voltage signal output by the wireless charging receiving end module A1 is divided by the adjustable resistor RP2 and the resistor R3, and the resistor R4 reduces the voltage and limits the current. The voltage at pin 2 of the three-terminal voltage comparator A3 is higher than the 4.75V threshold voltage inside the three-terminal voltage comparator A3, and the output of the high level at pin 1 of the three-terminal voltage comparator A3. The high level reduces the voltage and limits the current through the resistor R6 and enters the base of the triode Q. The triode Q conducts and the collector outputs a low level and enters the negative power input terminal of the relay K. The relay K is energized and its two control power input terminals and two normally closed contact terminals are open. The motor speed reduction device M1 will not be energized to work. When the control system controls the relevant components so that the radio frequency wave is converted into high-frequency current below the lowest threshold (for example, the radio frequency wave is lower than 27.11MHz), the voltage signal output by the wireless charging receiving end module A1 is divided by the adjustable resistor RP2 and the resistor R3, and the resistor R4 reduces the voltage and limits the current. The voltage at pin 2 of the three-terminal voltage comparator A3 is lower than the 4.75V threshold voltage inside the comparator A. The output of the high level at pin 1 of the three-terminal voltage comparator A3 stops, the triode Q cuts off and its collector no longer outputs a low level and enters the negative power input terminal of the relay K. The relay K loses power and no longer attracts, and its two control power input terminals and two normally closed contact terminals are respectively closed. The positive and negative power input terminals of the motor speed reduction device M1 are energized, and its power output shaft drives the adjustment handle 103 of the control system of the radio frequency welding equipment to gradually rotate clockwise, and the control system gradually controls the frequency of the output high-frequency current to increase. When the control system controls the relevant components again so that the radio frequency wave is converted into high-frequency current above the lowest threshold, the voltage at pin 2 of the three-terminal voltage comparator A3 is higher than the 4.75V threshold voltage inside the three-terminal voltage comparator A3 again, and the output of the high level at pin 1 of the three-terminal voltage comparator A3 is output again. Furthermore, the relay K is energized and its control power input terminal and normally closed contact terminal are open. The control system handle no longer rotates, and the control system controls the output of radio frequency waves not exceeding 27.11MHz. The radio frequency welding equipment performs welding operations based on the stable high-frequency current.

[0020] Figure 1 , 2 As shown above, when the high-frequency current controlled and output by the control system of the new type of radio frequency welding equipment is greater than or lower than the threshold value, under the combined action of the two comparison circuits and the adjustment circuit, the high-frequency current controlled and output by the control system can be adjusted in time to be lower or higher through the motor reduction equipment, which brings convenience to the staff, improves the welding work efficiency, and improves the quality of the workpieces welded by the radio frequency welding equipment. Figure 2 As shown, the resistance values of resistors R1, R2, R3, R4, R5, and R6 are 4.75K, 4.7K, 10K, 4.75K, 4.7K, and 10K respectively; the power supply module A is a finished product of an AC 220V to DC 12V switching power supply module; the models of the three-terminal voltage comparators A2 and A3 are AN051A; the relays K1 and K are DC 12V relays; the triodes Q1 and Q are NPN triodes of model 9013; the motor reduction equipment M1 is a coaxial small motor gear reducer with a power of 5W and a rotational speed of 4 revolutions per minute at the power output shaft; the wireless charging receiver module A1 is a wireless charging receiver module of model JFH-PWC-RX010, which has two power output terminals. During specific operation, it converts the received wireless received energy signal (radio frequency radio wave) into a DC power supply through its own conversion circuit, and then outputs the DC power supply to the power input terminal of its own DC voltage stabilization sub-module. The power output terminal of the DC voltage stabilization sub-module outputs a DC power supply with a constant voltage. In the new type, the DC voltage stabilization sub-module is removed and not used, and the dynamically changing DC power supply output by the conversion circuit (the higher the radio frequency radio wave frequency, the greater the output power voltage, and vice versa) directly enters the other end of the adjustable resistor RP1 and R1, and the other end of the adjustable resistor RP2 and R3; the resistance values of the adjustable resistors RP1 and RP2 are 47K (adjusted to about 7.25K and 7.24K respectively in the new type). Specifically, the handles of the adjustable resistors RP1 and RP2 are respectively located outside the front end of the housing of the radio frequency welding equipment 4. The side ends of the handles of the adjustable resistors RP1 and RP2 are marked with numbers representing the radio frequency radio wave frequencies. The higher the resistance values of the adjustable resistors RP1 and RP2 are adjusted respectively, the greater the voltage division between them and the resistors R1 and R3. Then, when the radio frequency radio wave frequency generated by the radio frequency welding equipment 4 is relatively large, the 1st pins of the three-terminal voltage comparators A2 and A3 will output a high level, that is, the highest and lowest threshold values of the radio frequency radio wave frequency generated by the new type of radio frequency welding equipment 4 are set relatively large; the lower the resistance values of the adjustable resistors RP1 and RP2 are adjusted respectively, the lower the voltage division between them and the resistors R1 and R3. Then, when the radio frequency radio wave frequency generated by the radio frequency welding equipment 4 is relatively small, the 1st pins of the three-terminal voltage comparators A2 and A3 will output a high level, that is, the highest and lowest threshold values of the radio frequency radio wave frequency generated by the new type of radio frequency welding equipment 4 are set relatively low.

[0021] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For a person skilled in the art, it is obvious that the present invention is limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be construed as limiting the claims concerned.

[0022] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A radio frequency welding controller includes a wireless charging receiving end module, characterized in that, It also has an adjustment mechanism, a comparison circuit, and an adjustment circuit; the adjustment mechanism includes a motor reduction device, a support frame, and a ring. There are multiple support frames. The upper ends of the multiple support frames are installed on the outer side of the housing of the motor reduction device, the lower ends of the multiple support frames are installed on the upper end of the ring, the lower end of the ring is installed on the side end of the control handle of the radio frequency welding equipment control system, and a fixed sleeve is installed at the lower end of the rotating shaft of the motor reduction device. The lower end of the fixed sleeve is installed on the outer side of the control handle; there are at least two sets of the comparison circuit and the adjustment circuit respectively. The comparison circuit, the adjustment circuit, and the wireless charging receiving end module are installed in the radio frequency welding equipment; the power output end of the wireless charging receiving end module and the signal input ends of the two comparison circuits are electrically connected respectively, the signal output ends of the two comparison circuits and the signal input ends of the two adjustment circuits are electrically connected respectively, and the power output ends of the two adjustment circuits and the power input end of the motor reduction device are electrically connected respectively.

2. The radio frequency welding controller according to claim 1, wherein The power output end of the wireless charging receiving end module does not have a voltage stabilizing function.

3. The radio frequency welding controller according to claim 1, wherein The comparison circuit includes an adjustable resistor, a resistor, and a three-terminal voltage comparator that are electrically connected. The positive power input end of the three-terminal voltage comparator is connected to one end of the first resistor. The other end of the first resistor is connected to one end of the second resistor and one end of the adjustable resistor. The other end of the first resistor is connected to the negative power input end of the three-terminal voltage comparator.

4. The radio frequency welding controller according to claim 1, wherein The adjustment circuit includes a resistor, a triode, and a relay that are electrically connected. The positive power input end of the relay is connected to the positive control power input end. The collector of the triode is connected to the negative power input end of the relay. One end of the resistor is connected to the base of the triode. The emitter of the triode is connected to the negative control power input end of the relay.

Images