CN204353635U - A kind of gas-shielded welder without control circuit board - Google Patents
A kind of gas-shielded welder without control circuit board Download PDFInfo
- Publication number
- CN204353635U CN204353635U CN201420766400.9U CN201420766400U CN204353635U CN 204353635 U CN204353635 U CN 204353635U CN 201420766400 U CN201420766400 U CN 201420766400U CN 204353635 U CN204353635 U CN 204353635U
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- CN
- China
- Prior art keywords
- contactor
- gas
- circuit board
- control circuit
- relay switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a kind of gas-shielded welder without control circuit board, comprise the electric torch being provided with electric welding head, rifle switch, also comprise main current supply circuit, control loop, wire feed loop and air supply system, wherein main current supply circuit is provided with A.C. contactor, wire feed loop and air supply system are respectively arranged with the relay switch and mechanical air valve that link with A.C. contactor, and wire feed is also provided with speed-regulating potentiometer in loop.Gas-shielded welder without control circuit board of the present utility model utilizes the A.C. contactor of energy synchronization action, relay switch and mechanical air valve to realize power transmission, wire feed and the air feed welded, and utilize speed-regulating potentiometer to realize the adjustment of wire feed rate, without the need to arranging control circuit board, the part of most fragile in whole welding machine is removed without a break, realizes super-long service life, super-durable, low cost, the low gas-shielded welder safeguarding threshold, maintenance cost.
Description
Technical field
The utility model relates to welding machine, is specifically related to a kind of gas-shielded welder that can realize power transmission, wire feed and air feed without control circuit board.
Background technology
With reference to Fig. 3, protect in welding process at gas, need control circuit board to receive the switch signal of rifle switch traditionally, and then control wire feeding motor 3, electronics air valve 5, power control module (such as A.C. contactor S1).Wherein start-stop is not only in the control of wire feeding motor 3; also has the adjustment of wire feed rate; this has involved the function of power adjustment; therefore control circuit board often uses controllable silicon or metal-oxide-semiconductor; the power adjusting circuit that collocation is relevant; realize wire feed rate adjustment to control with start-stop, the part of air valve then makes the air valve with magnetic induction coil cross electric adhesive by control panel control relay, then supplies welding protection gas.Even to this day, although these electronic circuits and related electronic components are all very ripe, but the electronic building brick on circuit board is still the part that in whole welding machine, the life-span is the shortest, fault rate is the highest, the fault of circuit board, the user generally not having electronic technology background, there is no the possibility of overhauling voluntarily.
Utility model content
The purpose of this utility model is to provide a kind of gas-shielded welder that can realize power transmission, wire feed and air feed without control circuit board, by newly-designed system, the part of most fragile in whole welding machine is removed without a break, realize super-long service life, super-durable, low cost, the low gas-shielded welder safeguarding threshold, maintenance cost.
The utility model solves the technical scheme that its technical problem adopts:
Without a gas-shielded welder for control circuit board, comprise
Electric torch, is provided with electric welding head, rifle switch,
Main current supply circuit, for electric welding head is powered, main current supply circuit is provided with the A.C. contactor carrying out cut-offfing control,
Control loop, described control loop is powered by rifle switch control rule, is provided with ac contactor coil in control loop,
Wire feed loop, is provided with for carrying welding wire to the wire feeding motor of electric welding head, wire feed loop is provided with and controls the speed-regulating potentiometer of wire feed rate, and the relay switch linked with A.C. contactor,
Air supply system, be provided with for carrying protective gas to the air delivering pipeline of electric welding head, described air delivering pipeline is provided with the mechanical air valve linked with A.C. contactor.
Further, described relay switch is provided with a normally opened contact and a normally-closed contact, and described normally opened contact is connected with wire feeding motor and controlled the start and stop of wire feeding motor.
Further, described wire feeding motor two ends are parallel with the normally-closed contact of discharge resistance and relay switch, when wire feeding motor works, normally-closed contact is opened, when wire feeding motor quits work, normally-closed contact closes, by discharge resistance electric current remaining in wire feeding motor coil release.
Further, described relay switch is the external hanging type relay combined with A.C. contactor, drives A.C. contactor action together with relay switch after ac contactor coil energising.
Further, described relay switch is separate relay, and the coil of relay switch is arranged in control loop, and the coil of relay switch and ac contactor coil synchronously supply power-off, make relay switch and A.C. contactor synchronization action.
Further, described mechanical air valve comprises base, base top is provided with upper cover, airtight inner chamber is formed between base and upper cover, upper cover top be provided with respectively with inlet channel and the outlet passageway of intracavity inter-connection, the piston that can move up and down is provided with in inner chamber, the top of piston is provided with the sealing gasket of closing or connecting inlet channel, the bottom of piston is provided with and drives its spring resetted that moves up, the middle and lower part of piston is provided with and drives its pull bar moved down, pull bar is connected with the moving plate of A.C. contactor, sealing ring is provided with between described piston and upper cover, sealing ring is fixedly mounted on the middle and upper part of piston.
The beneficial effects of the utility model are:
Gas-shielded welder without control circuit board of the present utility model utilizes the A.C. contactor of energy synchronization action, relay switch and mechanical air valve to realize power transmission, wire feed and the air feed welded, and utilize speed-regulating potentiometer to realize the adjustment of wire feed rate, without the need to arranging control circuit board, the part of most fragile in whole welding machine is removed without a break, realizes super-long service life, super-durable, low cost, the low gas-shielded welder safeguarding threshold, maintenance cost.
Accompanying drawing explanation
Fig. 1 is the circuit connection structure schematic diagram of the utility model first embodiment;
Fig. 2 is the circuit connection structure schematic diagram of the utility model second embodiment;
Fig. 3 is the circuit connection structure schematic diagram of existing gas-shielded welder.
Detailed description of the invention
The utility model provides a kind of gas-shielded welder without control circuit board, comprises electric torch, and electric torch is provided with electric welding head, rifle K switch.With reference to Fig. 1, Fig. 2, be circuit connection structure figure of the present utility model, comprise main current supply circuit, control loop, wire feed loop and air supply system.
Described main current supply circuit comprises the ac input end, A.C. contactor S1, power regulation module, main transformer, current rectifying and wave filtering circuit, out put reactor and the DC output end that connect successively, the ac input end of main current supply circuit directly adopts civil power to input, and A.C. contactor S1 controls cut-offfing of main current supply circuit.
Described control loop and the operating voltage needed for wire feed loop lower, therefore, before control loop and wire feed loop, be provided with control transformer 4, after civil power being inputted step-down, be supplied to control loop and wire feed loop to make its work respectively.Wherein wire feed loop can drive for exchanging, and as shown in Figure 1, also can be DC driven, as shown in Figure 2; When wire feed loop is DC driven, need to arrange current rectifying and wave filtering circuit after control transformer 4.
Control loop comprises the rifle K switch and ac contactor coil that are connected in series.
Wire feed loop comprises wire feeding motor 3, speed-regulating potentiometer VR, discharge resistance R and relay switch S2.Wire feeding motor 3 is for carrying welding wire to electric welding head.Speed-regulating potentiometer VR for adjusting the size of current in wire feed loop, thus controls wire feed rate.The external hanging type relay that relay switch S2 preferably combines with A.C. contactor S1, reduces solenoid, circuit realiration is simplified most, drives A.C. contactor S1 action together with relay switch S2 after ac contactor coil energising; In addition, relay switch S2 also can be independently relay, but the coil of relay switch S2 need be arranged in control loop, makes relay switch S2 and A.C. contactor S1 synchronization action.Relay switch S2 is provided with a normally opened contact and a normally-closed contact.The normally opened contact series connection of wire feeding motor 3, speed-regulating potentiometer VR and relay switch S2, the normally opened contact of relay switch S2 controls the start and stop of wire feeding motor 3; After the normally-closed contact series connection of discharge resistance R and relay switch S2, be connected in parallel on wire feeding motor 3 two ends, form discharge circuit, when wire feeding motor 3 quits work, by electricity remaining in discharge circuit release motor.
Air supply system comprises the air delivering pipeline 1 of conveying protective gas to electric welding head, air delivering pipeline 1 is provided with the mechanical air valve 2 linked with A.C. contactor S1, machinery air valve 2 comprises base, base top is provided with upper cover, airtight inner chamber is formed between base and upper cover, upper cover top be provided with respectively with inlet channel and the outlet passageway of intracavity inter-connection, the piston that can move up and down is provided with in inner chamber, the top of piston is provided with the sealing gasket of closing or connecting inlet channel, the bottom of piston is provided with and drives its spring resetted that moves up, the middle and lower part of piston is provided with and drives its pull bar moved down, pull bar is connected with the moving plate of A.C. contactor S1, sealing ring is provided with between described piston and upper cover, sealing ring is fixedly mounted on the middle and upper part of piston.When ac contactor coil energising adhesive contact, the moving plate of A.C. contactor S1 pulls pull bar, the piston of mechanical air valve 2 is moved down, opens inlet channel, carry out air feed; When after ac contactor coil S1 power-off, piston resets under the action of the spring, closes inlet channel.
Gas-shielded welder without control circuit board of the present utility model utilizes A.C. contactor S1, the relay switch S2 of energy synchronization action and mechanical air valve 2 to realize power transmission, wire feed and the air feed welded, and utilize speed-regulating potentiometer VR to realize the adjustment of wire feed rate, without the need to arranging control circuit board, the part of most fragile in whole welding machine is removed without a break, realizes super-long service life, super-durable, low cost, the low gas-shielded welder safeguarding threshold, maintenance cost.
The foregoing is only preferred embodiments of the present utility model, as long as the technical scheme realizing the utility model object with basic same approach all belongs within protection domain of the present utility model.
Claims (6)
1. without a gas-shielded welder for control circuit board, it is characterized in that: comprise
Electric torch, is provided with electric welding head, rifle switch (K),
Main current supply circuit, for electric welding head is powered, main current supply circuit is provided with the A.C. contactor (S1) carrying out cut-offfing control,
Control loop, described control loop controls power supply by rifle switch (K), is provided with ac contactor coil in control loop,
Wire feed loop, is provided with for carrying welding wire to the wire feeding motor (3) of electric welding head, wire feed loop is provided with and controls the speed-regulating potentiometer (VR) of wire feed rate, and the relay switch (S2) linked with A.C. contactor (S1),
Air supply system, be provided with for carrying protective gas to the air delivering pipeline (1) of electric welding head, described air delivering pipeline (1) is provided with the mechanical air valve (2) linked with A.C. contactor (S1).
2. a kind of gas-shielded welder without control circuit board according to claim 1, it is characterized in that: described relay switch (S2) is provided with a normally opened contact and a normally-closed contact, described normally opened contact is connected with wire feeding motor (3) and is controlled the start and stop of wire feeding motor (3).
3. a kind of gas-shielded welder without control circuit board according to claim 2, is characterized in that: described wire feeding motor (3) two ends are parallel with the normally-closed contact of discharge resistance (R) and relay switch (S2).
4. a kind of gas-shielded welder without control circuit board according to claim 3, it is characterized in that: described relay switch (S2) is the external hanging type relay combined with A.C. contactor (S1), after ac contactor coil energising, drive A.C. contactor (S1) action together with relay switch (S2).
5. a kind of gas-shielded welder without control circuit board according to claim 3, it is characterized in that: described relay switch (S2) is separate relay, the coil of relay switch (S2) is arranged in control loop.
6. a kind of gas-shielded welder without control circuit board according to claim 1, it is characterized in that: described mechanical air valve (2) comprises base, base top is provided with upper cover, airtight inner chamber is formed between base and upper cover, upper cover top be provided with respectively with inlet channel and the outlet passageway of intracavity inter-connection, the piston that can move up and down is provided with in inner chamber, the top of piston is provided with the sealing gasket of closing or connecting inlet channel, the bottom of piston is provided with and drives its spring resetted that moves up, the middle and lower part of piston is provided with and drives its pull bar moved down, pull bar is connected with the moving plate of A.C. contactor (S1), sealing ring is provided with between described piston and upper cover, sealing ring is fixedly mounted on the middle and upper part of piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420766400.9U CN204353635U (en) | 2014-12-05 | 2014-12-05 | A kind of gas-shielded welder without control circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420766400.9U CN204353635U (en) | 2014-12-05 | 2014-12-05 | A kind of gas-shielded welder without control circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204353635U true CN204353635U (en) | 2015-05-27 |
Family
ID=53255132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420766400.9U Withdrawn - After Issue CN204353635U (en) | 2014-12-05 | 2014-12-05 | A kind of gas-shielded welder without control circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204353635U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104475930A (en) * | 2014-12-05 | 2015-04-01 | 江门市保值久机电有限公司 | Gas-shielded welder without control circuit board |
-
2014
- 2014-12-05 CN CN201420766400.9U patent/CN204353635U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104475930A (en) * | 2014-12-05 | 2015-04-01 | 江门市保值久机电有限公司 | Gas-shielded welder without control circuit board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150527 Effective date of abandoning: 20170531 |