CN201313233Y - Spot welder - Google Patents
Spot welder Download PDFInfo
- Publication number
- CN201313233Y CN201313233Y CNU2008200946121U CN200820094612U CN201313233Y CN 201313233 Y CN201313233 Y CN 201313233Y CN U2008200946121 U CNU2008200946121 U CN U2008200946121U CN 200820094612 U CN200820094612 U CN 200820094612U CN 201313233 Y CN201313233 Y CN 201313233Y
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- mash welder
- welding
- circuit
- decision circuitry
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- 238000003466 welding Methods 0.000 claims abstract description 46
- 238000005070 sampling Methods 0.000 claims description 20
- 238000012360 testing method Methods 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 230000002159 abnormal effect Effects 0.000 claims description 6
- 239000004973 liquid crystal related substance Substances 0.000 claims description 5
- 230000002950 deficient Effects 0.000 abstract description 7
- 239000000047 product Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- -1 ferrous metals Chemical class 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Arc Welding Control (AREA)
Abstract
The utility model relates to a spot welder, which comprises a main controller and a spot-welding actuating device for welding, and also comprises a current tester for measuring the working current of the spot welder during each welding, determining whether the working current is in the preset range or not and transmitting the judged results to the main controller at real time, wherein the input terminal of the current tester is electrically connected with the spot-welding actuating device. The utility model has the advantages that with the current tester for measuring the working current during each welding, operators can judge whether each welding is in the set range or not, i.e. whether the quality is normal or not, so that the operators can immediately know the welding quality after the completion of each welding, thereby early finding out defective products and picking out so as to improve the quality of products.
Description
[technical field]
The utility model relates to a kind of welding equipment, more particularly, relates to a kind of mash welder.
[background technology]
Mash welder is widely used in the assembling and spot welding of every profession and trade metal structures such as electronics, electrical equipment, electrovacuum, five metals, is specially adapted to that non-ferrous metals such as copper, silver are thin, the spot welding of thin material.Also be used for pole plate, the negative pole pin of various batteries (ni-mh, NI-G, lithium ion), the welding of the sheet that confluxes in recent years.Its operation principle is as follows: two electrode pressurization workpiece during work, make double layer of metal under the pressure of two electrodes, form certain contact resistance, and welding current forms the thermal welding of moment when another electrode at 2 contact resistance points from an electrode stream, and welding current moment from another electrode along two part flows so far electrode form the loop, do not injure the internal structure of welded piece.By its operation principle as can be known, the electric current the when welding quality of mash welder and its work has bigger relation, too big or too little the unusual of welding quality that all can cause of its operating current.But because the weld interval of mash welder is extremely short, add that existing mash welder does not detect and show the device of each operating current, cause operating personnel can't judge the quality of this welding, thereby make because the failure welding product that the instability of mash welder operating current is brought are blended in the finished product, bring qualitative hidden danger.
[utility model content]
The technical problems to be solved in the utility model is, above-mentioned weld interval owing to mash welder at prior art is extremely short, add that existing mash welder does not show the device of each operating current, cause operating personnel can't judge the defective of the quality of this welding, can and show that the operating current of this welding makes operating personnel to judge whether normally electric welding machine of this welding by detection thereby provide a kind of.
The technical scheme that its technical problem that solves the utility model adopts is: construct a kind of mash welder, comprise main controller and the spot welding actuating unit that is used to weld, also comprise the operating current of measuring the each welding of described mash welder, judge whether described operating current is in prior setting range and described judged result is sent in real time the current sensing means of described main controller; The input of described current sensing means is electrically connected on described spot welding actuating unit.
In mash welder described in the utility model, described current sensing means comprises current sampling circuit, current range initialization circuit, electric current decision circuitry and display circuit; Current value and send described electric current decision circuitry to when described current sampling circuit is used to obtain described mash welder and welds at every turn; Described electric current decision circuitry is judged electric current that described current sampling circuit sends here whether in described setting range according to the scope of setting by described current range initialization circuit in advance, and the corresponding normal or abnormal signal of output is to described main controller; Described display circuit is used to show the current value that described current sampling circuit obtains and shows its value when described current range initialization circuit is set described current range.
In mash welder described in the utility model, described current sampling circuit comprises Hall current sensor.
In mash welder described in the utility model, described display unit comprises 12864 character liquid crystal display circuits.
In mash welder described in the utility model, described electric current decision circuitry is made of microcontroller, and described microcontroller comprises built-in or is circumscribed with the single-chip microcomputer of the analog-to-digital conversion module of 10 above precision.
In mash welder described in the utility model, described current range initialization circuit also comprises the keyboard that is provided with that is used to regulate described current detecting scope bound; The described keyboard that is provided with comprises the upper limit current options button, the lower current options button that is used to select current detecting scope lower bound current value that are used to select current detecting range limit current value at least, is used to increase the increase key of regulating current value and is used to reduce the minimizing key of regulating current value.
In mash welder described in the utility model, also comprise the abnormal current output signal that receives described electric current decision circuitry output and testing apparatus that the workpiece that welds during with described current anomaly picks.
In mash welder described in the utility model, also comprise being connected buffer circuit between described electric current decision circuitry output and the described testing apparatus, that be used for the output signal of described electric current decision circuitry is coupled to described main controller.
In mash welder described in the utility model, described buffer circuit comprises photoelectric coupled device.
Implement mash welder of the present utility model, has following beneficial effect: owing to have the current sensing means of operating current when detecting each the welding, make operating personnel can judge that each welding is whether in the scope of setting, be whether its quality is normal, so can be so that operating personnel know its welding quality immediately after each welding is finished, thereby can find defective products as early as possible and it is picked out, improve the quality of products.
[description of drawings]
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the structural representation of a kind of mash welder embodiment of the utility model;
Fig. 2 is the electrical schematic diagram of a kind of mash welder embodiment of the utility model.
[specific embodiment]
As shown in Figure 1, in a kind of mash welder embodiment of the utility model, described mash welder comprises spot welding actuating unit 1, current sampling circuit 2, electric current decision circuitry 3, current range initialization circuit 4, display circuit 5, buffer circuit 6 and testing apparatus 7; Wherein, the function of welding in the spot welding actuating unit 1 realization mash welder does not have different places with mash welder of the prior art; Current sampling circuit 2 is obtained the working current value in when welding and it is transferred to electric current decision circuitry 3 by above-mentioned spot welding actuating unit 1, in the present embodiment, because current value is bigger during electric welding machine work, usually at the 0-2000 ampere, so between above-mentioned current sampling circuit 2 and the spot welding actuating unit 1, directly do not connect.But select for use Hall current sensor as above-mentioned current sampling circuit 2, and with its be installed in above-mentioned spot welding actuating unit 1 near, its electric current that can correctly sense spot welding actuating unit 1 is got final product.Current sampling circuit 2 sends the voltage that its current signal of sensing is converted to the 0-5 volt to electric current decision circuitry 3, electric current decision circuitry 3 is handled these voltage signals and according in advance by 4 inputs of current range initialization circuit and be stored in wherein current range value, whether the voltage signal of judging this input is in above-mentioned setting range, and the current value with the voltage signal representative of these current sampling circuit 2 inputs shows in above-mentioned display circuit 5 simultaneously; No matter in the current range of above-mentioned setting, electric current decision circuitry 3 is output signal all for the signal sent here of above-mentioned current sampling circuit 2, this signal is coupled to testing apparatus 7 by buffer circuit 6; When signal that above-mentioned current sampling circuit 2 is sent here is judged to be in its current range of setting in advance by electric current decision circuitry 3, the normal electric current normal signal of this welding job is represented in above-mentioned electric current decision circuitry 3 outputs, in the present embodiment, the employing high level is represented, at this moment, described testing apparatus is failure to actuate; When signal that above-mentioned current sampling circuit 2 is sent here is judged to be not in its current range of setting in advance by electric current decision circuitry 3, the abnormal current anomaly signal of this welding job is represented in above-mentioned electric current decision circuitry 3 outputs, in the present embodiment, the employing low level represents that at this moment, described testing apparatus moves, the workpiece of this welding is picked, the normal workpiece of itself and other is separated, improved the qualification rate and the quality of product, improved production efficiency of products simultaneously.Certainly, in other embodiments, also can adopt other signal form to represent the normal or abnormal signal of above-mentioned electric current, for example, also can represent that electric current is normal, and represent current anomaly etc. with high level signal with low level signal.
In the present embodiment, the ATMEGA88 Series of MCU that has adopted atmel corp is as above-mentioned electric current decision circuitry 3, ATMEGA88 is a high-performance, 8 8-digit microcontrollers of low-power consumption, the voltage signal that its built-in 8 road A/D conversion (mould/number conversion) module can be directly used in above-mentioned Hall current sensor input is converted to data signal, and need not expand special A/D conversion (mould/number conversion) chip, A/D conversion (mould/number conversion) module of 10 can be accomplished 5 amperometric measurement precision in 0-2000 ampere range, built-in 512 byte EEPROM can store the bound current value power down of setting and not lose.Certainly, in other embodiments, also can use the microcontroller of other models, need only A/D conversion (mould/number conversion) module that its A/D that is built-in with 10 changes (mould/number conversion) module or is circumscribed with 10.
In the present embodiment, above-mentioned current range initialization circuit 4 comprises the keyboard that is provided with that is used to regulate described current detecting scope bound, this keyboard comprises 4 buttons, is respectively: be used to select current detecting range limit current value the upper limit current options button, be used to select current detecting scope lower bound current value the lower current options button, be used to increase the increase key of regulating current value and be used to reduce the minimizing key of regulating current value; In addition when pressing above-mentioned upper limit current options button and lower current options button simultaneously, current range is provided with circuit the electric current of setting is stored among the EEPROM of microcontroller, be the compound of above-mentioned upper limit current options button and lower current options button, be equivalent to an acknowledgement key.In other embodiments, also can use three keys to realize the adjusting of current range, comprise a upper limit current setting key, a lower current setting key and an acknowledgement key, wherein the upper limit current setting key is used for selecting and regulating described upper limit current, the lower current setting key is used for selecting and regulating described lower current, and acknowledgement key is used to finish the electric current setting and will sets value preservation.Above-mentioned current range initialization circuit 4 has gone out to be provided with outside the button of keyboard, remainder is also all realized by above-mentioned ATMEGA88 microcontroller, the button that keyboard is set is connected on the I/O end on the above-mentioned ATMEGA88 microcontroller, is used to regulate the value of the bound of setting current range.
In the present embodiment, above-mentioned ATMEGA88 microcontroller also is connected with display circuit 5 by serial communication interface, described display circuit 5 for inner carry the GB character library, its controller is the 12864 character liquid crystal modules of ST7920, this liquid crystal module can show 4 row, 8 row Chinese character and characters.In other embodiments, also can select the 12864 character liquid crystal modules of not being with character library for use.
In the present embodiment, above-mentioned testing apparatus 7 comprises the electric current of received current decision circuitry 3 outputs normal or the control device of current anomaly signal and the executing agency that is controlled by above-mentioned control device, above-mentioned control device comprises PLC (the Programmable Logic Controller on this mash welder main controller, programmable logic controller (PLC)), because the voltage of above-mentioned microcontroller and PLC is different, need carry out voltage transitions; Simultaneously, owing to there is bigger electromagnetic interference when mash welder uses, so when above-mentioned microcontroller output signal arrives above-mentioned PLC, normal or current anomaly signal is coupled to above-mentioned PLC (being testing apparatus 7) with electric current by buffer circuit 6, and this PLC is electric current normal signal or current anomaly signal according to the signal of its reception, control the action of above-mentioned executing agency,, then control above-mentioned executing agency and do not do action if it receives is the electric current normal signal; As what receive is the current anomaly signal, then controls the action of described executing agency, and the workpiece of welding is picked.In the present embodiment, above-mentioned buffer circuit 6 adopts photoelectric coupled device to realize that its model is TLP512.The conversion of above-mentioned photoelectric coupled device by electrical-optical-electricity is sent to electric current normal signal and current anomaly signal the input of above-mentioned testing apparatus 7 by the output of electric current decision circuitry 3.In the present embodiment, above-mentioned executing agency comprises a mechanical arm, and this manipulator is under the control of above-mentioned PLC, and the workbench with soldered workpiece release mash welder enters the defective products collection container that is installed on the mash welder, and itself and non-defective unit are separated.Certainly, in other embodiments, also can use other testing apparatus 7,, and defective products separated automatically with non-defective unit get final product as long as it can judge electric current normal signal and current anomaly signal.
By foregoing description as can be known, in the present embodiment, the PLC on the PLC of described testing apparatus 7 and the mash welder main controller is same PLC, and they use the different port of this PLC respectively.In other embodiments, also can use different PLC or similar device respectively.
Fig. 2 is the electrical schematic diagram of present embodiment, and wherein, U1 is a microprocessor, and is as described above, and its model is ATmega88.As above-mentioned current processing circuit 3,, also link to each other with display circuit 5, buffer circuit 6, current settings electric current 4 and current sampling circuit 2 except with the power module U2 of himself need of work and crystal oscillator Y1 link to each other.In Fig. 2, the button in demonstrating current setting circuit 4, all the other each several parts have all only shown the socket that connection is provided, and as LCD, P2, P3 and P4 etc., do not show concrete outer relay part, as Hall element or LCD module etc.So not overslaugh of expression mode technical staff is to the understanding of present embodiment, so there are not the relevant parts of concrete manifestation.
Claims (9)
1, a kind of mash welder, comprise main controller and the spot welding actuating unit that is used to weld, it is characterized in that, also comprise the operating current of measuring the each welding of described mash welder, judge whether described operating current is in prior setting range and described judged result is sent in real time the current sensing means of described main controller; The input of described current sensing means is electrically connected on described spot welding actuating unit.
2, mash welder according to claim 1 is characterized in that, described current sensing means comprises current sampling circuit, current range initialization circuit, electric current decision circuitry and display circuit; Current value and send described electric current decision circuitry to when described current sampling circuit is used to obtain described mash welder and welds at every turn; Described electric current decision circuitry is judged electric current that described current sampling circuit sends here whether in described setting range according to the scope of setting by described current range initialization circuit in advance, and the corresponding normal or abnormal signal of output is to described main controller; Described display circuit is used to show the current value that described current sampling circuit obtains and shows its value when described current range initialization circuit is set described current range.
3, mash welder according to claim 2 is characterized in that, described current sampling circuit comprises Hall current sensor.
4, mash welder according to claim 3 is characterized in that, described display unit comprises 12864 character liquid crystal display circuits.
5, mash welder according to claim 4 is characterized in that, described electric current decision circuitry is made of microcontroller, and described microcontroller comprises built-in or is circumscribed with the single-chip microcomputer of the analog-to-digital conversion module of 10 above precision.
6, mash welder according to claim 5 is characterized in that, described current range initialization circuit also comprises the keyboard that is provided with that is used to regulate described current detecting scope bound; The described keyboard that is provided with comprises the upper limit current options button, the lower current options button that is used to select current detecting scope lower bound current value that are used to select current detecting range limit current value, is used to increase the increase key of regulating current value and is used to reduce the minimizing key of regulating current value.
7, mash welder according to claim 6 is characterized in that, also comprises the abnormal current output signal that receives described electric current decision circuitry output and testing apparatus that the workpiece that welds during with described current anomaly picks.
8, mash welder according to claim 7 is characterized in that, also comprises being connected buffer circuit between described electric current decision circuitry output and the described testing apparatus, that be used for the output signal of described electric current decision circuitry is coupled to described main controller.
9, mash welder according to claim 8 is characterized in that, described buffer circuit comprises photoelectric coupled device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200946121U CN201313233Y (en) | 2008-06-10 | 2008-06-10 | Spot welder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200946121U CN201313233Y (en) | 2008-06-10 | 2008-06-10 | Spot welder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201313233Y true CN201313233Y (en) | 2009-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200946121U Expired - Lifetime CN201313233Y (en) | 2008-06-10 | 2008-06-10 | Spot welder |
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| Country | Link |
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| CN (1) | CN201313233Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109317805A (en) * | 2018-12-07 | 2019-02-12 | 中正智控（江苏）智能科技有限公司 | In conjunction with the percussion welder control device and control method of PLC |
-
2008
- 2008-06-10 CN CNU2008200946121U patent/CN201313233Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109317805A (en) * | 2018-12-07 | 2019-02-12 | 中正智控（江苏）智能科技有限公司 | In conjunction with the percussion welder control device and control method of PLC |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090923 |
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| CX01 | Expiry of patent term |