CN87214612U - Co2 shielded welding machine without control cables - Google Patents
Co2 shielded welding machine without control cables Download PDFInfo
- Publication number
- CN87214612U CN87214612U CN 87214612 CN87214612U CN87214612U CN 87214612 U CN87214612 U CN 87214612U CN 87214612 CN87214612 CN 87214612 CN 87214612 U CN87214612 U CN 87214612U CN 87214612 U CN87214612 U CN 87214612U
- Authority
- CN
- China
- Prior art keywords
- welding
- wire
- tracheae
- source
- copper core
- 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- Withdrawn
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Abstract
The utility model discloses a CO2 shielded welding machine without control cables, belonging to welding equipment. A welding power supply and a wire feeding machine are connected by using positive pole welding cables and a purpose-made air tube, an output detector and a detecting amplifier are also arranged in the welding power supply, and a common connecting point is built between the main circuit of the welding power supply and the control circuit of the wire feeding machine. The traditional CO-[2] welding machine must use a multi-core control cable to connect the welding power supply and the wire feeding machine so as to constantly generate the wire breaking accidents due to being moved and stepped during welding operation. Due to the multi-core control cables which are eliminated, the utility model with high reliability and convenient operation has no the control wire breaking problem.
Description
The utility model belongs to welding equipment.
Existing CO
2Gas shielded welding machine mainly comprises the source of welding current, wire-feed motor, wire drawing type welding gun, however CO
2Gas shielded welding machine is invented over nearly 30 years, CO
2Between the source of welding current and the wire-feed motor, be with an anodal welding cable, 10 meters multi-core controlled cables how long and a tracheae connect always.The above-mentioned source of welding current is divided into main circuit and control circuit, main circuit comprises contactor, three-phase welding transformer, rectifier, direct current out put reactor, in control circuit, power by single phase alternating current power supply, by the signal of rectifier and cyclelog output through multicore control plug, multi-core controlled cable outputs in the wire-feed motor, and then is transported to the wire drawing type welding gun by switch control separated exciting direct current generator.
The band multi-core controlled cable CO that the operator states in the use
2When gas shielded welding machine welded, the control cable of kilogram weight surplus in the of 10 in tow not only moved inconveniently, and labour intensity is big, and owing to move during operation frequently, the control line frangibility has become CO
2The one of the main reasons that the gas shielded welding machine reliability is low.
The purpose of this utility model is a kind of CO that does not adopt the control cable to be connected between the source of welding current and wire-feed motor of design
2Gas shielded welding machine so that its reliability is improved, and alleviates operator's labour intensity greatly.
To achieve these goals, promptly between source of welding current A and wire-feed motor B, remove multi-core controlled cable and multicore control plug, and with special tracheae, promptly single copper core tracheae m is connected with anodal welding cable k.Single copper core tracheae m is installed in the wire-feed motor B, and the gas outlet of magnetic valve QF links to each other with the air inlet of single copper core tracheae m.Output detector R and detecting amplifier h pack in source of welding current A.Output detector R is actually a resistance; Detecting amplifier h comprises two identical operational amplifiers, i.e. dual operational amplifier CI
1, CI
2, resistance R
18, R
19, R
20, R
21, R
22, R
23, R
24, R
25, R
26, R
27, R
28, R
29, capacitor C
4, C
5, C
6, Zener diode ZD
3, ZD
4With transistor T
3, T
4, T
5Output detector R one end is connected with silicon controlled rectifier (SCR) f, two input resistance R in its other end and the detecting amplifier h
18, R
19Two ends connect, and and single copper core tracheae m in copper core m
1Link to each other, this is actually with motor D and connects together, detecting amplifier h self wiring situation and can be described as follows in conjunction with Fig. 2 with the annexation of magnetic valve QF, electromagnetic contactor J: input resistance R
18, R
19With output detector R and dual operational amplifier IC
1, IC
2Corresponding input connects together, and IC
1, IC
2Output with as the R of output resistance
24, R
25A corresponding end links to each other, R
24, R
25In addition two ends respectively with Zener diode ZD
3, ZD
4Corresponding input connects ZD
3, ZD
4Output be connected in series corresponding resistance R separately
26, R
27After, be connected on transistor T respectively
3, T
4Base loop on, T
3Colelctor electrode meet magnetic valve QF, protection diode D
17, transistor T
5Colelctor electrode meet electromagnetic contactor J, protection diode D
18, this external dual operational amplifier IC
1, IC
2Input and output between each other meets a feedback resistance R
22, R
23The utility model is provided with common point C between source of welding current A positive pole, motor D and detection loop, so that the source of welding current main circuit and the control circuit for wire feeder that are in isolation usually, by the position of conversion two cover circuit common, it is in disconnects or on-state.
The utility model makes the detecting amplifier h of control circuit or is connected with rectifier C in the main circuit.
The utility model principle is illustrated in conjunction with Fig. 1 and Fig. 2.
Source of welding current A is made up of main circuit and control circuit, in main circuit, by the three-phase alternating-current supply power supply of 380V.Alternating voltage is by behind contactor J, the three-phase ac transformer b, and through rectifier c output direct current weldingvoltage, its negative pole of output end loop is connected to direct current out put reactor d, is connected with weldment j by negative pole welding cable e.
Control circuit is powered by single phase alternating current power supply.Alternating voltage is input to control transformer e primary return, and its secondary loop is connected in the electric machine speed regulation loop and detects in the loop.When the K switch on the wire drawing type welding gun i was closed, motor D low speed started moment, sent into the input of detecting amplifier h after output detector R detects the motor D initiating signal, and in detecting amplifier h, signal is by input resistance R
18, R
19Input dual operational amplifier CI
1, CI
2Carry out calculation process, reach and promote transistor T after the definite value
3, T
4, T
5Become conducting state by cut-off state, make electromagnetic contactor J, magnetic valve QF by certain program work, and then make wire feeding motor D become normal operation by low speed, because magnetic valve QF gas outlet and single copper core tracheae m air inlet join, thus assurance CO
2Gas flows out through tracheae m by certain program, and the single copper core m in the tracheae m
1Send the initiating signal of motor D to control circuit, so just impel welding wire contact weldment j, set up normal CO
2Welding arc.When the K switch on the wire drawing type welding gun i was turn-offed, electric motor loop was cut off, and the normally closed contact of K switch is connected braking resistor R simultaneously
1, motor D is braked immediately, and welding wire stops to carry.Because the cut-out of electric motor loop, the signal of output detector R reduce to zero, the conversion of detecting amplifier h output current potential makes magnetic valve QF, electromagnetic contactor J quit work by certain program, and welding job finishes.
The utility model, only just can be connected with the host computer control circuit with single copper core tracheae m through anodal welding cable k so no longer need to connect multi-core controlled cable on the welding gun i because motor D is placed in the hand-held wire drawing type welding gun i, and this has just been avoided traditional CO
2Welding machine must connect the disadvantage of motor and main frame with multi-core controlled cable, promptly pass by often to take place control line in welding operation owing to move and jam on the accident that causes broken string.Because control line can not take place again opens circuit, the utility model is promptly light, and is reliable again, thereby enlarges energy-efficient CO better
2Welding procedure.
Fig. 1 is the utility model square construction drawing.
Wherein:
B is the three-phase welding transformer; C is a rectifier, adopts silicon rectifier or silicon controlled rectifier (SCR); D is the direct current out put reactor; E is a control transformer; F is a silicon controlled rectifier (SCR); J is a weldment; E is the negative pole welding cable.
Figure finds out thus, and the air inlet of single copper core tracheae m links to each other with the gas outlet of magnetic valve QF, and magnetic valve QF adopts DCF24V, and motor D is a permanent magnet dc motor, and the utility model adopts CO
2Generator, the endotracheal copper core of heat-resisting, highstrenghtpiston m
1Be 0.8mm
2～1.5mm
2The naked copper core, the best is 1mm
2
Fig. 2 is self wiring relation of detecting amplifier h, and with the connection line figure of output detector R, electromagnetic contactor J, magnetic valve QF.
R
20, R
21Be connecting to neutral resistance, D
15, D
16Be protection diode, J
1Be the normal battle of electromagnetic contactor J.The resistance of output detector R is 2.7 Ω.
Claims (2)
1, a kind of CO
2Gas shielded welding machine, form by the source of welding current, wire-feed motor and wire drawing type welding gun, it is characterized in that between source of welding current A and wire-feed motor B, adopting single copper core tracheae m to be connected with anodal welding cable k, single copper core tracheae m is contained in the wire-feed motor B, its air inlet is connected with magnetic valve QF gas outlet, output detector R and detecting amplifier h are housed in source of welding current A, and output detector R is a resistance; Detecting amplifier h comprises two identical operational amplifier IC
1, IC
2, two input resistance R in output detector R one end and motor D and the detecting amplifier h
18, R
19Two ends connect, the other end links to each other with silicon controlled rectifier (SCR) f, detecting amplifier h also is connected with electromagnetic contactor J or rectifier C with magnetic valve QF respectively, is provided with common point C between source of welding current A positive pole, motor D and detection loop.
2, nothing control cable CO according to claim 1
2Gas shielded welding machine is characterized in that described single copper core tracheae m wears a 0.8mm in heat-resisting, highstrenghtpiston's tracheae
2～1.5mm
2The naked copper core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87214612 CN87214612U (en) | 1987-10-29 | 1987-10-29 | Co2 shielded welding machine without control cables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87214612 CN87214612U (en) | 1987-10-29 | 1987-10-29 | Co2 shielded welding machine without control cables |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87214612U true CN87214612U (en) | 1988-10-12 |
Family
ID=4828891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87214612 Withdrawn CN87214612U (en) | 1987-10-29 | 1987-10-29 | Co2 shielded welding machine without control cables |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87214612U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101474708B (en) * | 2008-01-02 | 2012-05-09 | 杭州凯尔达电焊机有限公司 | Method and system for realizing electric arc wire feeding for arc welding power source |
-
1987
- 1987-10-29 CN CN 87214612 patent/CN87214612U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101474708B (en) * | 2008-01-02 | 2012-05-09 | 杭州凯尔达电焊机有限公司 | Method and system for realizing electric arc wire feeding for arc welding power source |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| RR01 | Reinstatement of patent right |
Former decision: Termination of patent right |
|
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |