CN201009051Y - Touch-adjustment digital potentiometer for high-frequency electric welding machine - Google Patents
Touch-adjustment digital potentiometer for high-frequency electric welding machine Download PDFInfo
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- CN201009051Y CN201009051Y CNU200720062709XU CN200720062709U CN201009051Y CN 201009051 Y CN201009051 Y CN 201009051Y CN U200720062709X U CNU200720062709X U CN U200720062709XU CN 200720062709 U CN200720062709 U CN 200720062709U CN 201009051 Y CN201009051 Y CN 201009051Y
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- pin
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- resistance
- welding machine
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Abstract
A touch regulation digital potentiometer of high frequency welding machine is provided. The utility model pertains to the special digital potentiometer with touch regulation on high frequency welding machine, aims to adopt a novel device and design a novel circuit to replace the mechanical potentiometer, and is characterized in that: a printed circuit board 2 is arranged in the shell of the welding machine; one side of the printed circuit board 2 is provided with a digital potentiometer given circuit, comprising a 555 integrated chip D<1>, a 9C102 integrated chip D<2>, a non integrated chip D<3A> and D<3B>, a resistance R<1>-R<8>, a capacitance C<1>-C<5>, a diode V<1> and a voltage regulator diode V<2>. The utility model reduces the failure rate of novel welding machine, improves the reliability, makes welding machine easy to be carried, and makes technical promotion to high frequency welding machine, thereby, high frequency welding machine becomes a typical application of high frequency switching power source, which is one branch of high frequency high power switching power source.
Description
Technical field
The utility model belongs to the digital regulation resistance that touch special-purpose on the high-frequency welding machine is regulated.
Background technology
Electric welding machine is a kind of universal industrial equipment, is connected at structure steel fabrication, big machinery manufacturing, equipment repair and maintenance and bridge, building reinforcing bar and can both sees it at the performance main role.Before contemporary Power Electronic Technique was not used, welding equipment is active to be the industrial frequency AC arc-welding machine, and its advantage is a simple structure, and is durable.But its defective is that volume is big, Heavy Weight, and the energy consumption height.The copper of this kind welding machine, iron consumption are also very surprising, and the copper consumption of an average welding machine is 23 kilograms, and the consumption of silicon steel is 40 kilograms, because it is huge to use the total amount number, so in national economy, this machine copper, iron occupancy are very big.Since the nineties in last century, because the rise of Power Electronic Technique, a kind of new welder-Inverter Welder begins to emerge, and contrasts traditional welding machine, and this machine has following advantage: 1, volume is little, in light weight, has only 1/4 of former machine.2, save a large amount of copper, iron material, onesize output capacity, the consumption of copper material has only 1/10 of former machine; The consumption of silicon steel is zero.3, energy-conservation, high-frequency inversion power supply, because copper iron consumption reduces, copper, iron loss reduce, and high frequency is after rectification, and harmonic distortion is little, and penetration power is strong, and electrothermal efficiency increases, and the more former machine that economizes on electricity can reach 15-25%.4, because weight greatly alleviates, and welding machine can move with station is convenient, has reduced the length of secondary line, and the consumption of copper aluminum steel also greatly reduces, line loss also reduces thereupon.As seen, will be welding application mainstream in the future owing to above unrivaled advantage, Inverter Welder are arranged.But this machine emerges year surplus in the of ten, traditional welding machine is not thoroughly abandoned, and its reason is the weakness that self is also arranged, and it mainly is a complex structure, the fault rate height.Especially the welding machine use all is a bad working environments, damages easily, so do not obtain leading position so far.Therefore, how to improve the reliability of Inverter Welder, make it can replace the industrial frequency AC welding machine fully, just become pursuing one's goal of designer.As everyone knows, welding machine all has the size of current regulatory function, it all is electrical adjustment that the electric current of Inverter Welder is regulated, be to be undertaken by a potentiometer, common potentiometer is a micromachine, mainly constitute, pass through main axis rotation by cursor slide during adjusting, make it be in positions different on the resistance and realize by fixed resistance film (or silk), rotary main shaft and cursor slide.Good at environment, under the shockproof situation, the potentiometer fault is less, but be under the bad working environments, especially often dragged, shake, falling the occasion of rolling, potentiometer just is subjected to mortal wound because of the cursor slide loose contact, as easy as rolling off a log damage, and cause welding machine not work, even the whole damage of welding machine.At present, in the fault of Inverter Welder,, potentiometer accounted for 40% because of damaging the fault that causes.So, how to avoid the potentiometer fault, a difficult point that has just become the welding machine designer to be faced.
Summary of the invention
The purpose of this utility model is to adopt digital regulation resistance, replaces mechanical potentiometer and solves the problems referred to above with new device, design new-type circuit.The utility model is realized with following mode: digital regulation resistance is regulated in a kind of touch of high-frequency welding machine, and it is installed in the electric welding machine shell, has printed circuit board (PCB) 2, it is characterized in that the one side of this printed circuit board (PCB) 2 has by 555 integrated D
1, integrated D of 9C102
2, with non-integrated D
3AD
3BAnd resistance R
1-R
8, capacitor C
1-C
5, diode V
1, Zener diode V
2The electric given circuit of number that constitutes; The another side of printed circuit board (PCB) 2 is useful on the membrane keyboard S of rise (up)
1, be used for the downward modulation (down) membrane keyboard S
2, post PVC facial mask 5 outward; Membrane keyboard S in the electric given circuit of described number
1S
2One terminal contacts connects, membrane keyboard S
1Other is terminal contacts connection electrical resistance R
1And with 555 integrated D
14 pin, diode V
1, capacitor C
1, with non-integrated D
3B5 pin, 6 pin connect resistance R
1Connect capacitor C
1, membrane keyboard S
2Terminal contacts connects diode V in addition
1And with resistance R
4, capacitor C
4, with non-integrated D
3A1 pin, 2 pin connect resistance R
4 Connect capacitor C
4555 integrated D
11 pin connect capacitor C
2C
3Be connected to common point again, 5 pin connect capacitor C
3, capacitor C
2C
3Connect, 2 pin, 6 pin connect capacitor C
2Resistance R
2, 7 pin pass through resistance R
3Connection electrical resistance R
2, 8 pin connection electrical resistance R
2And all be connected to+the 15V power end; Integrated D of 9C102
2 Pulse input INC 1 pin connect 555 integrated D
13 pin, last downward modulation
2 pin connect and non-integrated D
3A3 pin, locking or open
7 pin connect and non-integrated D
3B4 pin, and connect capacitor C
5, potentiometer upper end V
H3 pin connection electrical resistance R
7R
5, Zener diode V
2, resistance R
6To+the 15V power end, potentiometer slider end V
W5 pin connection electrical resistance R
7R
8, potentiometer lower end V
L6 pin connection electrical resistance R
8Be connected to common point again, integrated D of 9C102
2Go up and also have power supply zero end V
SS4 pin, power positive end V
CC8 pin are connected to the 5V power end.The utility model has reduced the fault rate of Inverter Welder, has improved reliability.Electric welding machine is easy to carry.The high-frequency welding type is made skill upgrading.Like this, a kind of typical case that high-frequency welding machine becomes high frequency switch power uses, and it is a branch of high-frequency high-power field of switch power.
Description of drawings
Fig. 1 is that machinery revolves shaft potential device scheme of installation on the background technology high-frequency welding machine.
Fig. 2 is a digital regulation resistance fitting operation schematic diagram on the utility model high-frequency welding machine.
Fig. 3 is digital regulation resistance given circuit figure on the utility model high-frequency welding machine.
The specific embodiment
Now the utility model is described in further detail in conjunction with the accompanying drawings.Mechanical potentiometer is installed as shown in Figure 1 on the high-frequency welding machine, and as can be seen, it is by potentiometer holding screw 4 to be installed to be installed in above the printed circuit board (PCB) 2 that machinery revolves shaft potential device 1, and with revolve 3 on a handle and connect.The existing rotation of this potentiometer has fasteningly again, and the fault that various operating modes cause can take place at any time.Adopt the utility model digital regulation resistance as shown in Figure 2, the one side of printed circuit board (PCB) 2 has by 555 integrated D
1, integrated D of 9C102
2, with non-integrated D
3(D
3AD
3B) and resistance R
1-R
8, capacitor C
1-C
5, diode V
1, Zener diode V
2The digital regulation resistance given circuit that constitutes, another side has membrane keyboard S
1S
2, post PVC facial mask 5 outward.Like this, as long as on printed circuit board (PCB) 2, respectively adorn a slice 555 circuit, 9C102 digital regulation resistance circuit and a slice NAND circuit, some resistance capacitances, two touch-switch just can replace mechanical potentiometer.The utility model design circuit as shown in Figure 3, its operation principle is: D
1It is 555 integrated, by D
1, R
2, R
3, C
2, C
3Constitute 555 self-maintained circuits, frequency is 1--5Hz, D
14 pin when not regulating, be in low level, 555 can not work.D
2Be the digital regulation resistance chip, no any machinery position is moving, and its resistance is 1--10k, V
h, V
1Be the resistance two ends, the Vw pin is the high electronics cursor slide that is, total resistance calibration is 100, at D
21 pin on whenever add a positive pulse, the Vw cursor slide just changes a scale.D
22 pin be that the scale direction changes control pin, when it be high level, cursor slide is variation upwards; When being low level, cursor slide changes downwards.D
27 pin be locking/unlatching pin, when 7 pin are high level, regulate locking, D
2Do not respond any signal; Otherwise, regulate and open.In the time will regulating electric current, as long as flicking membrane keyboard S
1, S
2, just can achieve the goal.When resistance will be pressed S when raising (up)
1Key, high level leads to D
1The 4th pin, D
1Work, 3 human hair combing wastes go out pulse, and high level leads to and non-D simultaneously
35,6 pin, make D
3The 4th pin is a low level, and this level makes D
27 pin put low, D
2Control enables; D
31,2 pin drawn by low, its 3 pin height is put D
22 flat, under the effect of 1 pin pulse, cursor slide changes to high scale, resistance adjusts upward; When resistance will be pressed S when reducing (down)
2Key, high level passes through V
2Also arrive D
1The 4th pin, D1 work, 3 human hair combing wastes go out pulse, and high level leads to and non-D simultaneously
35,6 pin, make D
3The 4th pin is a low level, and this level makes D
27 pin put low, D
2Control enables; S
2Connection, make D
31,2 pin put by height, its 3 pin through with non-after be low, D
22 pin be that low spot is flat, under the effect of 1 pin pulse, the downward scale of cursor slide changes, resistance is adjusted downwards.V
1Effect be that upper and lower adjustment is isolated, mainly be to prevent by S
1The time, level is counter irritates, and causes D
2It is single to work, and can not reduce.R
7, R
8For reserve resistance, work as D
2Because of certain reason, during the cursor slide blocking-up, R
7, R
8Divide pressure energy to export a fixed level, keep system works, be unlikely to overturn.
Claims (1)
1. digital regulation resistance is regulated in the touch of a high-frequency welding machine, and it is installed in the electric welding machine shell, has printed circuit board (PCB) [2], it is characterized in that the one side of this printed circuit board (PCB) [2] has by 555 integrated [D
1], integrated [D of 9C102
2], with non-integrated [D
3A] [D
3B] and resistance [R
1-R
8], electric capacity [C
1-C
5], diode [V
1], Zener diode [V
2] the electric given circuit of number that constitutes; The another side of printed circuit board (PCB) [2] is useful on the membrane keyboard [S of rise (up)
1], be used for the downward modulation (down) membrane keyboard [S
2], post PVC facial mask [5] outward; Membrane keyboard [S in the electric given circuit of described number
1] [S
2] terminal contacts connection, membrane keyboard [S
1] terminal contacts connection electrical resistance [R in addition
1] and with 555 integrated [D
1] 4 pin, diode [V
1], electric capacity [C
1], with non-integrated [D
3B] 5 pin, 6 pin connect resistance [R
1] connection electric capacity [C
1], membrane keyboard [S
2] in addition terminal contacts connect diode [V
1] and with resistance [R
4], electric capacity [C
4], with non-integrated [D
3A] 1 pin, 2 pin connect resistance [R
4] connection electric capacity [C
4]; 555 integrated [D
1] 1 pin connect electric capacity [C
2] [C
3] being connected to common point again, 5 pin connect electric capacity [C
3], electric capacity [C
2] [C
3] connect, 2 pin, 6 pin connect electric capacity [C
2] resistance [R
2], 7 pin are by resistance [R
3] connection electrical resistance [R
2], 8 pin connection electrical resistance [R
2] and all be connected to+the 15V power end; Integrated [D of 9C102
2] pulse input INC1 pin connect 555 integrated [D
1] 3 pin, last downward modulation
2 pin connect and non-integrated [D
3A] 3 pin, locking or open
7 pin connect and non-integrated [D
3B] 4 pin, and connect electric capacity [C
5], potentiometer upper end V
H3 pin connection electrical resistance [R
7] [R
5], Zener diode [V
2], resistance [R
6] to+the 15V power end, potentiometer slider end V
W5 pin connection electrical resistance [R
7] [R
8], potentiometer lower end V
L6 pin connection electrical resistance [R
8] be connected to common point, integrated [D of 9C102 again
2] the last zero end V of power supply in addition
SS4 pin, power positive end V
CC8 pin are connected to the 5V power end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720062709XU CN201009051Y (en) | 2007-03-15 | 2007-03-15 | Touch-adjustment digital potentiometer for high-frequency electric welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720062709XU CN201009051Y (en) | 2007-03-15 | 2007-03-15 | Touch-adjustment digital potentiometer for high-frequency electric welding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201009051Y true CN201009051Y (en) | 2008-01-23 |
Family
ID=39043984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720062709XU Expired - Fee Related CN201009051Y (en) | 2007-03-15 | 2007-03-15 | Touch-adjustment digital potentiometer for high-frequency electric welding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201009051Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103986452A (en) * | 2014-06-06 | 2014-08-13 | 常州市武进凯利达电子有限公司 | Potentiometer with touch control |
-
2007
- 2007-03-15 CN CNU200720062709XU patent/CN201009051Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103986452A (en) * | 2014-06-06 | 2014-08-13 | 常州市武进凯利达电子有限公司 | Potentiometer with touch control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080123 Termination date: 20110315 |