CN202963736U - Structure with microprocessor controlling inverting welding machine of aluminum base PCB (printed circuit board) - Google Patents
Structure with microprocessor controlling inverting welding machine of aluminum base PCB (printed circuit board) Download PDFInfo
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- CN202963736U CN202963736U CN 201220705850 CN201220705850U CN202963736U CN 202963736 U CN202963736 U CN 202963736U CN 201220705850 CN201220705850 CN 201220705850 CN 201220705850 U CN201220705850 U CN 201220705850U CN 202963736 U CN202963736 U CN 202963736U
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- circuit board
- welding machine
- aluminum base
- pcb
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Abstract
The utility model relates to a structure with a microprocessor controlling an inverting welding machine of an aluminum base PCB. The structure comprises a PCB which is divided into two parts, one part is the aluminum PCB and a radiator of the aluminum PCB, and the other part is a control PCB of the welding machine. A power circuit of the welding machine is arranged on the aluminum PCB, and other control circuits of the welding machine are distributed on the control PCB. The structure with the micro processor controlling the inverting welding machine of the aluminum base PCB is designed and developed for meeting the use demands of families at home and abroad or users with small welding quantities and applicable to subjecting welding electrodes with diameters of 1.6-5.0mm to manual electric-arc welding. The output current changing range of the welding machine is 10-160A, the rated current is 160A, the rated load voltage is 26.4V, and the rated load sustained rate is 15%. The structure with the microprocessor controlling the inverting welding machine of the aluminum base PCB has the advantages of being high-efficiency, energy-saving, material-saving, small in size, lightweight, convenient to move and the like.
Description
Technical field
It is a kind of miniature welding machine product that has adopted microprocessor to control that the utility model relates to 160A Inverter Hand arc-welding machine.
Background technology
Current, the competition of electric welding machine produce market is very fierce, and is also more and more higher to the performance requirement of product.Not only be embodied on the advance and advantage of technology, also depend on to a great extent what of height, production cost of advance, the production efficiency of manufacturing process, the aspects such as the uniformity of product and reliability.
The aluminum base circuit board technology, namely on aluminium sheet with the electronic circuit of circuit and process technology thereof, technique, be mature on the whole in applications such as lighting circuits.This is mainly because in these fields, and the electric current of its control is smaller, and less demanding to heat radiation etc., historical facts or anecdotes is now got up than being easier to.But concerning electric welding machine, its current ratio that need to control is larger, and tens peace～170A are even larger, and the difficulty that historical facts or anecdotes is now got up is just very large, needs the technical barrier of solution many, and product is difficult to realize commercialization and industrialization.This is also that the electric welding machine industry seldom adopts aluminum base circuit board to make the basic reason of electric welding machine product.
The utility model welding machine is through years of researches and exploitation, the technical staff has accumulated a large amount of technology and development Experience, large Current Control and its heat radiation of welding machine aluminum base circuit board have been solved, the aluminum base circuit board processing technology, and the problem such as circuit working reliability, finally make the utility model welding machine product successfully enter the international market, satisfy user's instructions for use.
The utility model content
The purpose of this utility model is to provide microprocessor to control the structure of aluminum base circuit board inverter type welder, it is to carry out design and development for the family that satisfies lot of domestic and foreign or the relatively less user of welding capacity use, the welding rod that is suitable for diameter 1.6～5.0mm carries out manual electric arc welding, the output current excursion of welding machine: 10～160A, rated current 160A, nominal load voltage 26.4V, rated duty cycle 15% has the advantages such as efficient, energy-conservation, material-saving, volume are little, lightweight, conveniently moving.
For achieving the above object by the following technical solutions:
A kind of microprocessor is controlled the structure of aluminum base circuit board inverter type welder, comprise circuit board, it is characterized in that: described board design is divided into two parts, and a part is aluminum base circuit board and radiator thereof, and another partial circuit plate is the control circuit board of welding machine; The power circuit of welding machine is arranged on aluminum base circuit board, and other control circuit of welding machine is arranged in control circuit board.
Being furnished with several SMD single tube IGBT and fast quick-recovery commutation diode on described aluminum base circuit board, is not to be communicated with on electric between the device on aluminum base circuit board and its radiator.
Described aluminum base circuit board links together by screw and the radiator of himself, and aluminum base circuit board and control circuit board link together by screw again, the connection of forming circuit; The positive and negative end of rectification output of aluminum base circuit board is connected respectively to the output snap joint of welding machine by wire; Contravariant transformer, electrolytic capacitor filter, microprocessor and other control circuit are partly installed and are welded on control circuit board; The control circuit board mount is fixed on the top of welding machine base plate.
Arc-welding machine of the present utility model is a kind of miniature welding machine product that has adopted microprocessor to control, specifically a kind of inverter main circuit of the devices compositions such as SMD single tube IGBT and fast quick-recovery commutation diode and direct current hand arc welding machine that control circuit consists of thereof of adopting; The circuit arrangement such as a plurality of SMD single tube IGBT of welding machine and fast quick-recovery commutation diode are on an aluminum base circuit board, and other control circuit is arranged on an other control circuit board; Two circuit boards of welding machine have adopted that a large amount of paster electronic devices and components and SMT process are carried out automatically, highly-efficient processing, the artificial workload that participates in greatly reduces, thereby welding machine has the advantages such as compact conformation, technological method for processing are advanced, production efficiency is high, cost of manufacture is low, also improved the competitiveness of product in market.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model welding machine;
Part inventory in Fig. 1: 1, braces; 2, welding machine shell; 3, shell screw; 4, radiator; 5, aluminum base circuit board; 6, screw; 7, electric current regulator potentiometer knob; 8, control circuit board; 9, inversion main transformer; 10, control circuit board mount; 11, circuit board screw; 12, power supply input cable; 13, cooling fan; 14, welding machine base plate; 15, the output snap joint of welding machine.
The specific embodiment
As shown in Figure 1, welding machine is by electric current regulator potentiometer knob 7, cooling fan 13, aluminum base circuit board 5 and radiator 4 thereof, form with the output snap joint 15 of microprocessor-based control circuit board 8, inversion main transformer 9, welding machine, power supply input cable 12 etc.
On described aluminum base circuit board 5, main design arrangement has several SMD single tube IGBT and several fast quick-recovery commutation diodes, the holding circuit of the resistance on control circuit board, electric capacity, voltage-stabiliser tube main composition IGBT and fast recovery diode is to guarantee their reliably working; Circuit arrangement is on a 4W aluminum base circuit board 5, and the parts such as inversion main transformer of IGBT power switch and fast quick-recovery rectifying tube device and welding machine consist of two single-ended inverter main circuits jointly; Be disconnected on electric between device on aluminum base circuit board and its radiator, insulating requirements is arranged between the two; The heat that device produces at work can conduct by aluminum base circuit board, and by being close to radiator 4 heat radiation of installation with aluminum base circuit board, its objective is the functional reliability that guarantees IGBT power switch and fast quick-recovery rectifying tube device; Adopt the aluminum base circuit board of 4W, its thermal conductivity obviously is better than the aluminum base circuit board of 2W, can make the temperature of device on aluminum base circuit board reduce a lot, the reliably working that is conducive to these high power devices on aluminum base circuit board, circuit arrangement mode and the existing inverter type welder of this single tube IGBT and fast quick-recovery commutation diode have obvious difference, the latter normally is welded these devices on traditional PCB circuit board, and for these devices arrange corresponding radiator, this is the significant differences place of the utility model welding machine and common inverter type welder.
During welding machine work, by power supply input cable 12 access power supplies, from the minimum welding current regulator potentiometer knob 7 that turns clockwise, open switch, connect the power supply on control circuit board 8, simultaneously, set the size of welding current, at this moment, Switching Power Supply on control circuit board 8 part can produce+dc source that the circuit workings such as 24V need, can make circuit working, make welding machine output no-load voltage, enter the state of preparing welding; Welding machine adopts two single-ended inverter main circuits, and it is by IGBT and fast recovery diode rectification circuit on the single-phase rectifier on control circuit board 8 and filter circuit, aluminum base circuit board assembly 5, and the composition such as inversion main transformer 9; The utility model welder circuit does not adopt controls power transformer as the transformer of power supply, but adopts the form of the additional secondary windings of inversion main transformer to produce the needed direct current of control circuit+15V voltage; Method is: the secondary windings by contravariant transformer T1 obtains alternating voltage.This alternating voltage becomes DC voltage after over commutation, by three terminal integrated voltage stabilizer and accessory circuit thereof, obtain stable+15V DC voltage, this voltage supply control circuit, these circuit can be worked, under the effect of control circuit, can obtain pulse width modulation (PWM) signal of tens KHz.can make IGBT on aluminum base circuit board 5 be in the state of a control of high frequency switching by this signal, therefore, can produce high-frequency alternating electric current and voltage in the armature winding of inversion main transformer 9, hypotensive effect by inversion main transformer 9, obtain certain high-frequency ac voltage and electric current, the rectification of the fast recovery diode on aluminum base circuit board 5, thus obtain to satisfy DC voltage and the electric current of welding requirements at output snap joint 15 two ends of welding machine, temperature protection relay is arranged on aluminum base circuit board 5, when its temperature reaches its operating temperature, under the control of circuit, overheating indicator lamp can be bright, simultaneously, the pulse width modulating signal that drives IGBT work can make the output current of electric welding machine and voltage very low, thereby the protection welding machine can not damage IGBT because of overheated or overcurrent, the current detecting transformer can detect the primary current of main transformer, output current is large, current signal detected also larger, this current detection signal is as the Current Negative Three-Point Capacitance signal, the given value of current signal that produces with the electric current regulator potentiometer knob 7 of regulating the welding current size compares, control by circuit, can obtain to drive the pulse width modulating signal of IGBT work.The frequency of this signal is fixed, and can reach about tens KHz, still, the width of pulse is to change, its Changing Pattern is: during welding, when the given value of current signal of electric current regulator potentiometer knob 7 generations increased, the welding current of output also can increase thereupon.Otherwise, can reduce; When the given value of current signal that produces when electric current regulator potentiometer knob 7 was constant, along with the increase of welding current, the Current Negative Three-Point Capacitance signal increased, because its polarity is opposite with the polarity of given signal, therefore, by the control of circuit, the pulse width that drives IGBT work is reduced, so the pulse width of IGBT also reduces thereupon, the ON time of IGBT shortens, and this will make the lower voltage of output, namely in the situation that given constant, welding current increases, and output voltage reduces.This has namely obtained the so-called decline external characteristics that satisfies the manual electric arc welding requirement.
The utility model circuit board and topology layout are designed with the characteristics of oneself, it is a kind of miniature welding machine product that has adopted microprocessor to control, specifically a kind of inverter main circuit of the devices compositions such as SMD single tube IGBT and fast quick-recovery commutation diode and direct current hand arc welding machine that control circuit consists of thereof of adopting; Good circuit and structural design thereof, and processing technology and technology be the advantage place of this welding machine, is also to satisfy efficient, low-cost production, the important leverage that high reliability is used, this is the main cause of the utility model inverter type welder patent protection.
Because this welding machine has adopted advanced microprocessor hardware and software controlling technique, a lot of control procedures of welding machine become by software to be completed, not only reduced the hardware of welder circuit, volume or the size of circuit board and welding machine have been dwindled, and, correspondingly having improved production efficiency and the functional reliability of welding machine, is also its advantage place.
Claims (3)
1. a microprocessor is controlled the structure of aluminum base circuit board inverter type welder, comprise circuit board, it is characterized in that: described board design is divided into two parts, and a part is aluminum base circuit board (5) and radiator (4) thereof, the control circuit board (8) that another partial circuit plate is welding machine; The power circuit of welding machine is arranged on aluminum base circuit board (5), and other control circuit of welding machine is arranged in control circuit board.
2. a kind of microprocessor as claimed in claim 1 is controlled the structure of aluminum base circuit board inverter type welder, it is characterized in that: being furnished with several SMD single tube IGBT and fast quick-recovery commutation diode on described aluminum base circuit board (5), is not to be communicated with on electric between the device on aluminum base circuit board (5) and its radiator (4).
3. a kind of microprocessor as claimed in claim 1 is controlled the structure of aluminum base circuit board inverter type welder, it is characterized in that: described aluminum base circuit board (5) links together by screw and the radiator of himself (4), aluminum base circuit board (5) links together by screw with control circuit board (8) again, the connection of forming circuit; The positive and negative end of rectification output of aluminum base circuit board is connected respectively to the output snap joint (15) of welding machine by wire; Contravariant transformer (9), electrolytic capacitor filter, microprocessor and other control circuit are partly installed and are welded on control circuit board (8); Control circuit board mount (10) is fixed on the top of welding machine base plate (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220705850 CN202963736U (en) | 2012-12-20 | 2012-12-20 | Structure with microprocessor controlling inverting welding machine of aluminum base PCB (printed circuit board) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220705850 CN202963736U (en) | 2012-12-20 | 2012-12-20 | Structure with microprocessor controlling inverting welding machine of aluminum base PCB (printed circuit board) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202963736U true CN202963736U (en) | 2013-06-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220705850 Expired - Fee Related CN202963736U (en) | 2012-12-20 | 2012-12-20 | Structure with microprocessor controlling inverting welding machine of aluminum base PCB (printed circuit board) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202963736U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106041267A (en) * | 2016-06-24 | 2016-10-26 | 浙江肯得机电股份有限公司 | Microprocessor controlled contravariant multifunctional argon arc welding machine |
| CN106975821A (en) * | 2017-03-30 | 2017-07-25 | 朱宣辉 | A kind of IGBT inverter type welders with floating voltage and a variety of protection control functions |
-
2012
- 2012-12-20 CN CN 201220705850 patent/CN202963736U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106041267A (en) * | 2016-06-24 | 2016-10-26 | 浙江肯得机电股份有限公司 | Microprocessor controlled contravariant multifunctional argon arc welding machine |
| CN106975821A (en) * | 2017-03-30 | 2017-07-25 | 朱宣辉 | A kind of IGBT inverter type welders with floating voltage and a variety of protection control functions |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20211220 |