CN200981145Y - Electric resistance type spot welding machine - Google Patents
Electric resistance type spot welding machine Download PDFInfo
- Publication number
- CN200981145Y CN200981145Y CN 200620016571 CN200620016571U CN200981145Y CN 200981145 Y CN200981145 Y CN 200981145Y CN 200620016571 CN200620016571 CN 200620016571 CN 200620016571 U CN200620016571 U CN 200620016571U CN 200981145 Y CN200981145 Y CN 200981145Y
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- resistance
- width modulation
- mash welder
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Abstract
The utility model discloses a resistance-type spot welding machine, which comprises a zero-cross circuit and a single-chip, wherein an impulse-width modulation module is arranged between the zero-cross circuit and the single-chip, the impulse-width modulation module can make the impulse-width modulation for the zero-cross circuit-output square-wave signal for outputting onto the single-chip as a reference time sequence of the single-chip regulating switch circuit, thereby stabilizing the synchronous time sequence of the single-chip, avoiding influencing an open-and-shut control circuit, and stabilizing the energy output of the spot welding machine. The resistance-type spot welding machine of the utility model further comprises an open-and-shut control circuit, wherein the input end of the open-and-shut control circuit is connected with the output of the impulse-width modulation module, the impulse-width modulation module makes the waveform modulation for the single-chip-output signal which controls the open-and-shut control circuit, thereby realizing the digitalized regulation of the waveform, easily achieving the width quantification of the impulse width, stabilizing the control signal which inputs onto the open-and-shut control circuit, and simultaneously stabilizing the energy output of the spot welding machine.
Description
Technical field
The utility model relates to mash welder, particularly a kind of resistance-type mash welder.
Background technology
Resistance spot welding is to utilize electric current to produce the purpose that a large amount of resistance heats reach the base metals fusing welding by weldering nuclear.Along with the development of industrial automation, the resistance-type mash welder is used more and more widely.Existing resistance-type mash welder by the direct output pulse signal of zero crossing circuitry to single-chip microcomputer, as the synchronous sequence of single-chip microcomputer.Because zero crossing circuitry is directly the sinusoidal ac of the 50Hz of line voltage to be converted to the square-wave signal synchronous with its zero point.And fluctuation appears in line voltage regular meeting, makes the synchronous sequence of single-chip microcomputer fluctuation also may occur like this, thereby influences Single-chip Controlling switch regulating circuit, makes that the energy output of mash welder is unstable.
In addition, because the interface of single-chip microcomputer is limited, with other module of mash welder or circuit communication the time, need expansion interface, so need to increase gating or buffer circuit, this makes existing its peripheral circuit of resistance-type mash welder extremely complicated, influences the interference free performance of mash welder.
Summary of the invention
Technical problem to be solved in the utility model is the defective that remedies prior art, and a kind of resistance-type mash welder of exporting energy stabilization is provided.
Technical problem of the present utility model is solved by the following technical programs: a kind of resistance-type mash welder, comprise zero crossing circuitry and single-chip microcomputer, and be provided with pulse width modulation module between described zero crossing circuitry and the single-chip microcomputer.
Preferably,
Described mash welder also comprises the switch regulating circuit, and the input of described switch regulating circuit links to each other with the output of pulse width modulation module.
Described pulse width modulation module is CPLD.
Described mash welder also comprises the demonstration output module, and the input of described demonstration output module links to each other with the output of CPLD.
Described mash welder also comprises the civil power detection module, described civil power detection module links to each other with the single-chip microcomputer input, described monolithic function compares the detection magnitude of voltage and the standard value of the output of civil power detection module the generation feedback parameter and sends information command according to feedback parameter to described switch regulating circuit, regulates its output voltage.
Compared with prior art, the beneficial effects of the utility model are as follows:
Resistance-type mash welder of the present utility model is provided with pulse width modulation module between zero crossing circuitry and single-chip microcomputer, this pulse width modulation module carries out exporting single-chip microcomputer again to the reference sequential as single-chip microcomputer by-pass cock circuit after the pulsewidth modulation to the square-wave signal of zero crossing circuitry output.Can stablize the synchronous sequence of single-chip microcomputer like this, thereby avoid influencing the switch regulating circuit, thereby make the energy output of mash welder stable.
The input of the switch regulating circuit of resistance-type mash welder of the present utility model links to each other with the output of pulse width modulation module.Pulse width modulation module carries out waveform modulated to the signal of the gauge tap regulating circuit of single-chip microcomputer output, realize the digitlization adjusting of waveform, thereby be easy to realize the quantification of pulsewidth width, can stablize the control signal that inputs to the switch regulating circuit like this, thereby make the energy output of mash welder stable.
The pulse width modulation module of resistance-type mash welder of the present utility model adopts CPLD, and CPLD has abundant interface resource, and can not need like this increases gating or buffer circuit in addition, and its peripheral circuit of resistance-type mash welder is become simply, strengthens the interference free performance of mash welder.
In addition, the utility model adopts the combination of single-chip microcomputer and CPLD as control system, makes the control system modularization, makes things convenient for program upgrade, and can reserve expansion leeway, provides convenience for improving from now on.
Description of drawings
Contrast accompanying drawing and the utility model is explained below in conjunction with the specific embodiment.
Accompanying drawing is the structured flowchart of resistance-type mash welder of the present utility model.
The specific embodiment
As shown in drawings, a kind of resistance-type mash welder comprises human-computer interaction module 1, zero crossing circuitry 2, civil power detection module 3, transmission mechanism 4, switch regulating circuit 5, pneumoelectric change-over switch 6, CPLD (Complex Programmable Logic Device is called for short CPLD) 7, single-chip microcomputer 8.
The output of zero crossing circuitry 2 links to each other with the input of CPLD7, and zero crossing circuitry 2 can be rectified into line voltage the synchronous sequence with the civil power same frequency.Zero crossing circuitry 2 converts the sinusoidal ac of line voltage 50Hz to the square-wave signal synchronous with its zero point.Carry out waveform modulated output synchronous sequence by CPLD7 again, as the reference sequential of single-chip microcomputer 8 by-pass cock circuit.
Human-computer interaction module 1 comprises signal input module 11 and shows output module 12 that show that output module 12 can comprise charactron and light emitting diode, signal input module 11 links to each other with single-chip microcomputer 8, shows that output module links to each other with CPLD7.Signal input module 11 exports the various phenomenons that occur in real time in the command signal of user input and the welding process or the status signal of fault correspondence to single-chip microcomputer 8.
8 pairs of status signals of single-chip microcomputer carry out analyzing and processing, and export result to demonstration output module 12 by CPLD7, are checked to make things convenient for the user by the duties that show output module 12 real-time demonstration mash welders.
The command signal of the 8 couples of users of single-chip microcomputer input handle and export corresponding control signal to transmission mechanism 4 with operations such as control transmission mechanism 4 weld.Described transmission mechanism 4 comprises magnetic valve, and this magnetic valve can change into pneumatic signal with the signal of telecommunication of single-chip microcomputer 8 outputs.
Whether pneumoelectric change-over switch 6 can detect air pressure in the welding process, if air pressure is arranged, show that then mash welder is in the welding dormant state, and this moment, the 6 output welding of pneumoelectric change-over switch were stopped signal to single-chip microcomputer 8; If there is not air pressure, show that then mash welder is in welding or is about to welded condition, this moment, pneumoelectric change-over switch 6 output welding signals were to single-chip microcomputer 8, and single-chip microcomputer 8 receives and just sends instruction according to the sequential benchmark behind the welding signal and go to produce control signal to CPLD7, with the driving switch adjustment module.
Civil power detection module 3 real-time detection of grid voltage and input to single-chip microcomputer 8 in each welding interval, single-chip microcomputer 8 can compare detection magnitude of voltage and the standard value of input in it and generate feedback parameter and send control instruction according to feedback parameter to described CPLD7, and CPLD7 carries out waveform modulated to control instruction and exports adjusting again and control signal to switch regulating circuit 5.Described switch regulating circuit 5 comprises IGCT, thereby CPLD7 is by the output voltage of the ON time by-pass cock regulating circuit 5 of control IGCT.
CPLD7 can carry out waveform modulated to the signal that single-chip microcomputer 8 exports it to, realize the digitlization adjusting of waveform, thereby be easy to realize the quantification of pulsewidth width, more convenient like this gauge tap regulating circuit 5, make control more stable, this is than only adopting the Signal-controlled switch regulating circuit 5 of single-chip microcomputer 8 outputs separately and showing output module 12 more accurate, easier adjustings.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field; under the prerequisite that does not break away from the utility model design; just make some simple deduction or replace, all should be considered as belonging to the scope of patent protection that the utility model is determined by claims of being submitted to.
Claims (5)
1. a resistance-type mash welder comprises zero crossing circuitry and single-chip microcomputer, it is characterized in that:
Be provided with pulse width modulation module between described zero crossing circuitry and the single-chip microcomputer.
2. resistance-type mash welder according to claim 1 is characterized in that:
Also comprise the switch regulating circuit, the input of described switch regulating circuit links to each other with the output of pulse width modulation module.
3. resistance-type mash welder according to claim 1 and 2 is characterized in that:
Described pulse width modulation module is CPLD.
4. resistance-type mash welder according to claim 3 is characterized in that:
Also comprise the demonstration output module, the input of described demonstration output module links to each other with the output of CPLD.
5. resistance-type mash welder according to claim 4 is characterized in that:
Also comprise the civil power detection module, described civil power detection module links to each other with the single-chip microcomputer input, described monolithic function compares the detection magnitude of voltage and the standard value of the output of civil power detection module the generation feedback parameter and sends information command according to feedback parameter to described switch regulating circuit, regulates its output voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620016571 CN200981145Y (en) | 2006-12-18 | 2006-12-18 | Electric resistance type spot welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620016571 CN200981145Y (en) | 2006-12-18 | 2006-12-18 | Electric resistance type spot welding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200981145Y true CN200981145Y (en) | 2007-11-28 |
Family
ID=38908309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620016571 Expired - Fee Related CN200981145Y (en) | 2006-12-18 | 2006-12-18 | Electric resistance type spot welding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200981145Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104741757A (en) * | 2013-12-30 | 2015-07-01 | 镇江市润华无线电专用设备制造有限责任公司 | Control system of resistance welder |
| CN104741733A (en) * | 2013-12-30 | 2015-07-01 | 镇江市润华无线电专用设备制造有限责任公司 | Control system of alternating-current welding machine |
-
2006
- 2006-12-18 CN CN 200620016571 patent/CN200981145Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104741757A (en) * | 2013-12-30 | 2015-07-01 | 镇江市润华无线电专用设备制造有限责任公司 | Control system of resistance welder |
| CN104741733A (en) * | 2013-12-30 | 2015-07-01 | 镇江市润华无线电专用设备制造有限责任公司 | Control system of alternating-current welding machine |
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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 |
Granted publication date: 20071128 Termination date: 20151218 |
|
| EXPY | Termination of patent right or utility model |