CN213945208U - Flame brazing device - Google Patents
Flame brazing device Download PDFInfo
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- CN213945208U CN213945208U CN202022112351.5U CN202022112351U CN213945208U CN 213945208 U CN213945208 U CN 213945208U CN 202022112351 U CN202022112351 U CN 202022112351U CN 213945208 U CN213945208 U CN 213945208U
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Abstract
The utility model provides a flame brazing device relates to the welding technology field, has solved some present brazing devices that exist among the prior art, need through the artificial adjust knob in order to realize the proportion of gas and oxygen, lead to the relatively poor technical problem of flame regulation uniformity. The device comprises an oxygen input pipeline, a fuel gas input pipeline and a controller, wherein the controller is used for directly or indirectly controlling the opening degree of valves on the oxygen input pipeline and the fuel gas input pipeline so as to control the mixing ratio of two gases in the welding torch. The utility model is used for realize welded connection between to the component.
Description
Technical Field
The utility model belongs to the technical field of the welding technique and specifically relates to a flame brazing device is related to.
Background
In the field of household air conditioner manufacturing, structural components are mainly made of copper, and flame brazing is generally adopted to connect components at present according to the processing characteristics of materials of the structural components. Flame brazing is a processing method in which a material is heated by high-temperature flame generated by mixing a combustible gas and oxygen to melt a brazing material without melting a base material, thereby forming a good welded joint. At present, a special welding torch is generally adopted for welding, the reasonable proportion of fuel gas and oxygen is realized through an adjusting knob before welding, and neutral flame is utilized for welding. But due to the difference of skill levels of staff, the flame regulation consistency is poor, and certain influence is caused on the welding quality; meanwhile, the existing welding torch has higher technical requirement, is difficult to quickly enter the new staff and has influence on the production efficiency.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a flame brazing device has solved some brazing devices at present that exist among the prior art, need through artificial adjust knob in order to realize that the proportion of gas and oxygen leads to the relatively poor technical problem of flame control uniformity. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a pair of flame brazing device, including oxygen input pipeline, gas input pipeline and controller, through the controller is direct or indirect control oxygen input pipeline on and the aperture of valve is in order to be used for controlling the mixing ratio of two kinds of gases in the welding torch on the gas input pipeline.
Further, the oxygen input pipeline with the gas input pipeline is provided with oxygen pneumatic valve and gas pneumatic valve respectively, the oxygen pneumatic valve with the gas pneumatic valve all is connected with the solenoid valve, the solenoid valve with the controller is connected, adjusts the solenoid valve enables compressed air to get into the oxygen pneumatic valve with the gas pneumatic valve is in order to control the oxygen pneumatic valve with the aperture of gas pneumatic valve.
Furthermore, a delay relay is arranged on a pipeline between the oxygen pneumatic valve and the electromagnetic valve, and when the welding torch is closed, oxygen in the oxygen input pipeline is blocked later than gas in the gas input pipeline under the action of the delay relay so as to flush the pipeline.
Further, the flame brazing device further comprises a nitrogen input pipeline, wherein a nitrogen pneumatic valve is arranged on the nitrogen input pipeline and connected with the electromagnetic valve.
Furthermore, a microswitch is arranged on the welding torch, the microswitch is in a closed state when the welding torch is suspended on the welding torch bracket, a metal inductive switch is arranged on the welding torch head, and the microswitch and the metal inductive switch are both connected with the controller; when the controller receives a signal that the micro switch is opened, the controller controls the electromagnetic valve to control the nitrogen pneumatic valve to be opened; when the controller receives signals of opening the micro switch and the metal inductive switch, the controller controls the electromagnetic valve to control the oxygen pneumatic valve and the gas pneumatic valve to open.
Further, the controller comprises a touch display screen, the touch display screen is separated from the welding torch, and when the PLC of the controller receives an adjusting signal input by the touch display screen, the controller can control the opening degree of the valve on the oxygen input pipeline and the opening degree of the valve on the fuel gas input pipeline.
Further, the flame brazing device comprises a mixing pipeline for mixing oxygen and fuel gas, the oxygen input pipeline and the fuel gas input pipeline are both connected with the mixing pipeline, and the mixing pipeline is connected with the welding torch.
Furthermore, be provided with oxygen flow control sensor and oxygen pressure sensor on the oxygen input pipeline, be provided with gas flow control sensor and gas pressure sensor on the gas input pipeline, oxygen flow control sensor oxygen pressure sensor gas flow control sensor and gas pressure sensor all with the controller is connected.
Furthermore, at least one oxygen tempering valve is arranged on the oxygen input pipeline, at least one fuel gas tempering valve is arranged on the fuel gas input pipeline, and a tempering valve is arranged on a mixing pipeline of the flame brazing device for mixing oxygen and fuel gas.
Further, an oxygen filter is arranged on the oxygen input pipeline; and a gas filter is arranged on the gas input pipeline.
The utility model provides a flame brazing device, through the controller directly or the aperture of indirect control oxygen input pipeline on and the gas input pipeline go up the valve, can realize the accurate control of welding gas proportion, avoid leading to flame to influence welding quality unusually because of the gas proportion difference, realize welding process's effective management and control, to production process parameter quantization, the accurate ratio of use gas has been guaranteed, can guarantee the abundant burning of use gas, ensure the use of the neutral flame of welding process, the messenger has according to and guides production.
The utility model discloses preferred technical scheme can also produce following technological effect at least:
the pneumatic valve is controlled by the electromagnetic valve, and the oxygen and gas flow is controlled by controlling the on-off of the oxygen input pipeline and the gas input pipeline by the pneumatic valve, so that the direct contact of combustible gas and electricity is avoided, and the use safety of equipment is improved;
a delay relay is introduced into a pipeline between the oxygen pneumatic valve and the electromagnetic valve, so that delayed disconnection of oxygen is realized, the oxygen is used for flushing the interior of a mixing pipeline, the problem of backfire is effectively avoided, and the use safety of equipment is improved;
when the micro switch is turned on, only after the metal inductive switch is turned on, the gas and the oxygen can be conducted, the pulse igniter can obtain a signal and release pulse current to ignite a welding torch, and the use safety of the equipment is further improved;
digital operation is realized through adjustment of the touch display screen, the flow of gas and oxygen is accurately controlled, and an integrated welding torch is designed by adopting a scheme of mixing the gas and the oxygen in advance, so that an adjusting knob is not required to be added on the welding torch, the self-light weight of the welding torch is realized, the portability of the welding torch is enhanced, the operation intensity of workers is reduced, and the production efficiency is improved;
the gas filter is adopted to carry out necessary filtration on gas entering the device so as to reduce safety accidents caused by the blockage inside the pipeline caused by gas impurities.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic connection diagram of a flame brazing apparatus according to an embodiment of the present invention.
FIG. 1-oxygen inlet line; 2-a gas input pipeline; 3-a controller; 4-welding torch; 5-oxygen pneumatic valve; 6-gas pneumatic valve; 7-an electromagnetic valve; 8-a delay relay; 9-nitrogen input line; 10-nitrogen pneumatic valve; 11-a microswitch; 12-a metal inductive switch; 13-touch display screen; 14-a mixing line; 15-oxygen flow control sensor; 16-gas flow control sensor; 17-oxygen flashback valve; 18-gas flashback valves; 19-a tempering valve; 20-an oxygen filter; 21-a gas filter; 22-oxygen main valve; 23-nitrogen main valve; 24-a compressed air main valve; 25-a gas main valve; 26-an oxygen pressure sensor; 27-gas pressure sensor; 28-the work piece being welded.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, the utility model provides a flame brazing device, including oxygen input pipeline 1, gas input pipeline 2 and controller 3, directly or indirectly control the aperture of valve on the oxygen input pipeline 1 and the gas input pipeline 2 through controller 3 and be used for controlling the mixing ratio of two kinds of gases in welding torch 4. When welding is carried out by adopting a welding torch in the prior art, the reasonable proportion of fuel gas and oxygen needs to be realized by adjusting a knob before welding, but the flame adjustment consistency is poor due to the difference of skill levels of staff. And the utility model provides a flame brazing device, through the controller directly or indirectly control oxygen input pipeline 1 go up and the gas input pipeline 2 go up the aperture of valve, can realize the accurate control of welding gas proportion, avoid leading to flame to influence welding quality unusually because of the gas proportion difference, realize the effective management and control of welding process, to production process parameter quantization, the accurate ratio of service gas has been guaranteed, can guarantee the abundant burning of service gas, ensure the use of the neutral flame of welding process, the messenger can rely on and guide production according to the messenger.
As the embodiment of the utility model discloses optional implementation mode, oxygen input pipeline 1 and gas input pipeline 2 are provided with oxygen pneumatic valve 5 and gas pneumatic valve 6 respectively, and oxygen pneumatic valve 5 and gas pneumatic valve 6 all are connected with solenoid valve 7, and solenoid valve 7 is connected with controller 3, and adjusting solenoid valve 7 enables compressed air to get into the aperture of oxygen pneumatic valve 5 and gas pneumatic valve 6 with control oxygen pneumatic valve 5 and gas pneumatic valve 6. Adopt solenoid valve 7 control pneumatic valve, the mode of pneumatic valve control oxygen input pipeline 1 and 2 break-make of gas input pipeline realizes the control to oxygen and gas flow, has avoided the direct contact of combustible gas with electricity, has realized the effective isolation of electrical apparatus original paper with easily combustible and explosive gas, has improved equipment safety in utilization, has reduced the incident risk.
As the embodiment of the utility model provides an optional implementation mode, be provided with delay relay 8 on the pipeline between oxygen pneumatic valve 5 and the solenoid valve 7, when welding torch 4 closed, the oxygen in the oxygen input pipeline 1 was later than the gas in the gas input pipeline 2 and is blocked in order to be used for flushing the pipeline under delay relay 8's effect. A delay relay 8 is introduced into a pipeline between the oxygen pneumatic valve 5 and the electromagnetic valve 7, so that delayed disconnection of oxygen is realized, oxygen is utilized to carry out 'flushing' in the mixing pipeline 14, the problem of backfire is effectively avoided, and the use safety of equipment is improved.
As the embodiment of the utility model provides an optional implementation mode, flame brazing device still includes nitrogen gas input line 9, is provided with nitrogen gas pneumatic valve 10 on the nitrogen gas input line 9, and nitrogen gas pneumatic valve 10 is connected with solenoid valve 7. The nitrogen inlet line 9 may be pre-charged with nitrogen gas to provide a nitrogen blanket prior to welding the workpiece 28 to be welded.
As an optional implementation manner of the embodiment of the present invention, the welding torch 4 is provided with the micro switch 11, when the welding torch 4 is suspended on the welding torch support, the micro switch 11 is in a closed state, the torch head of the welding torch 4 is provided with the metal inductive switch 12, and both the micro switch 11 and the metal inductive switch 12 are connected to the controller 3; when the controller 3 receives a signal that the microswitch 11 is opened, the controller 3 controls the solenoid valve 7 to control the opening of the nitrogen pneumatic valve 10; when the controller 3 receives signals that the micro switch 11 and the metal inductive switch 12 are opened, the controller 3 controls the solenoid valve 7 to control the opening of the oxygen pneumatic valve 5 and the gas pneumatic valve 6. The welding torch support frame and the microswitch 11 are linked, namely the microswitch 11 is in a closed state when the welding torch 4 is hung on the welding torch support, the microswitch 11 is in an open state when the welding torch 4 is lifted, meanwhile, the switch is turned on, and after the microswitch 11 is turned on, a signal is transmitted to the controller 3, and the controller 3 controls the electromagnetic valve 7 to open the nitrogen pneumatic valve 10 and provide nitrogen protection for a workpiece 28 to be welded. Meanwhile, in order to further enhance the safety, a metal inductive switch 12 is introduced, when the micro switch 11 is turned on, the metal inductive switch 12 is turned on, a signal for turning on the metal inductive switch 12 is transmitted to the controller 3, and the controller 3 controls the electromagnetic valve 7 to open the oxygen pneumatic valve 5 and the gas pneumatic valve 6. Only after the metal inductive switch 12 is turned on, the gas and the oxygen can be conducted, the pulse igniter can obtain signals, and pulse current is released to ignite a welding torch, so that the use safety of the equipment is further improved.
As the embodiment of the utility model provides an optional implementation mode, controller 3 includes touch display screen 13, and touch display screen 13 breaks away from the setting of welding torch 4, and when the PLC of controller 3 accepted the accommodate signal of touch display screen 13 input, controller 3 can control the aperture of oxygen input pipeline 1 and 2 overhead valves of gas input pipeline. The digital operation is realized through the adjustment of the touch display screen 13, and the flow of fuel gas and oxygen is accurately controlled; the touch display screen 13 is provided separately from the welding torch 4, and an adjusting knob does not need to be added to the welding torch 4, thereby realizing the light weight of the welding torch.
As the embodiment of the utility model provides an optional implementation mode, the flame brazing device is including being used for the mixed pipeline 14 of oxygen and gas, and oxygen input pipeline 1 and gas input pipeline 2 all are connected with mixed pipeline 14, and mixed pipeline 14 is connected with welding torch 4. The scheme of mixing fuel gas and oxygen in advance is adopted, an integrated welding torch is designed, an adjusting knob is not required to be added on the welding torch 4, the self light weight of the welding torch is realized, the portability of the welding torch is enhanced, the operation intensity of workers is reduced, and the production efficiency is improved.
As the embodiment of the utility model provides an optional implementation mode, be provided with oxygen flow control sensor 15 and oxygen pressure sensor 25 on the oxygen input pipeline 1, be provided with gas flow control sensor 16 and gas pressure sensor 26 on the gas input pipeline 2, oxygen flow control sensor 15, oxygen pressure sensor 25, gas flow control sensor 16 and gas pressure sensor 26 all are connected with controller 3. The oxygen flow control sensor 15 and the oxygen pressure sensor 25 are respectively used for detecting the flow and the pressure of oxygen in the oxygen input pipeline 1 and transmitting the detected signals to the controller 3; the gas flow control sensor 16 and the gas pressure sensor 26 are configured to detect the flow rate and the pressure value of the gas in the gas input line 2, respectively, and transmit the detected signals to the controller 3. The flow and pressure conditions of oxygen and fuel gas are detected on line in real time, so that the control of the proportion of mixed gas in a pipeline is realized, and the accurate proportion of the used gas is ensured.
As the embodiment of the utility model provides an optional implementation mode, be provided with at least one oxygen tempering valve 17 on the oxygen input pipeline 1, be provided with at least one gas tempering valve 18 on the gas input pipeline 2, the flame brazing device is used for being provided with tempering valve 19 on the mixed pipeline 14 that oxygen and gas mix. In order to effectively improve the safety of the use process, a back fire valve is arranged at the oxygen main valve 22 and the fuel gas main valve 25 to reduce the safety problem caused by back fire, and a back fire valve 19 is arranged on the mixing pipeline 14 to improve the safety. Note that, during use of the flame brazing apparatus, the oxygen main valve 22, the nitrogen main valve 23, the compressed air main valve 24, and the gas main valve 25 are in an open state.
As an optional implementation manner of the embodiment of the present invention, an oxygen filter 20 is disposed on the oxygen input pipeline 1; a gas filter 21 is arranged on the gas input pipeline 2. The gas filter is adopted to carry out necessary filtration on gas entering the device so as to reduce safety accidents caused by the blockage inside the pipeline caused by gas impurities.
The utility model provides a flame brazing device's use as follows:
and (3) ignition process: under the condition of no operation, the welding torch 4 is hung on the welding torch bracket, the micro switch 11 is controlled to be closed through the self gravity, and the device is in a standby state; after the welding torch 4 is taken up, the microswitch 11 is reset, the electromagnetic valve 7 is signaled at the moment, and the nitrogen pneumatic valve 10 is controlled to conduct the gas path, so that the nitrogen is pre-filled into the workpiece 28 to be welded. Before welding, a metal inductive switch 12 on the gun head of the welding torch 4 is needed, then the oxygen pneumatic valve 5 and the gas pneumatic valve 6 are subjected to signals to enable a gas circuit to be conducted, and meanwhile, an igniter releases pulse current through a pulse power supply to cooperate with ignition. The proportion of oxygen and fuel gas in the process is preset by the control part in the early stage, and welding operation can be carried out after ignition is successful.
The gun closing process: after welding, the welding torch 4 is suspended on the welding torch bracket, and the micro switch 11 is triggered by the gravity of the welding torch 4 to close the gas circuit. In the closing process, the instantaneous gas triggered by the microswitch 11 is switched off, then the oxygen is switched off after 3s (not limited to 3s, and also can be seconds of other values) under the action of the delay relay 8, and the oxygen can play a role of flushing the mixing pipeline 14 in the period, so that the backfire is avoided. After 10 seconds (not limited to 10 seconds, but seconds of other values) the nitrogen gas was cut off.
The utility model aims at providing a flame brazing device, which realizes the accurate control of combustible gas and oxygen on the premise of ensuring the safe use, realizes the rapid and efficient operation of the whole operation procedures of gun lifting, ignition and welding, and reduces the waste of process actions; meanwhile, the pneumatic valve body is designed, so that direct contact between electricity and combustible gas in the use process is avoided, and the safety of the device is enhanced.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. Flame brazing device, comprising an oxygen inlet line (1), a gas inlet line (2) and a controller (3), wherein the opening of the valves on the oxygen inlet line (1) and on the gas inlet line (2) is controlled directly or indirectly by the controller (3) for controlling the mixing ratio of the two gases in a welding torch (4);
and the oxygen input pipeline (1) and the gas input pipeline (2) are respectively provided with a pneumatic valve, and the controller (3) is used for controlling the opening of the pneumatic valve so as to control the mixing ratio of the two gases in the welding torch (4).
2. Flame brazing device according to claim 1, wherein the oxygen inlet line (1) and the gas inlet line (2) are provided with an oxygen pneumatic valve (5) and a gas pneumatic valve (6), respectively, the oxygen pneumatic valve (5) and the gas pneumatic valve (6) are both connected with a solenoid valve (7), the solenoid valve (7) is connected with the controller (3), and adjusting the solenoid valve (7) enables compressed air to enter the oxygen pneumatic valve (5) and the gas pneumatic valve (6) to control the opening degrees of the oxygen pneumatic valve (5) and the gas pneumatic valve (6).
3. Flame soldering device according to claim 2, characterized in that a delay relay (8) is arranged in the line between the oxygen pneumatic valve (5) and the solenoid valve (7), with the aid of which delay relay (8) the oxygen in the oxygen supply line (1) is blocked later than the gas in the gas supply line (2) for flushing the line when the welding torch (4) is closed.
4. Flame soldering device according to claim 2, characterized in that the flame soldering device further comprises a nitrogen gas input line (9), wherein a nitrogen gas pneumatic valve (10) is arranged on the nitrogen gas input line (9), and the nitrogen gas pneumatic valve (10) is connected with the solenoid valve (7).
5. A flame brazing device according to claim 4, wherein a microswitch (11) is arranged on the welding torch (4), the microswitch (11) is in a closed state when the welding torch (4) is suspended on a torch support, a metal inductive switch (12) is arranged on the torch head of the welding torch (4), and the microswitch (11) and the metal inductive switch (12) are both connected with the controller (3);
when the controller (3) receives a signal that the micro switch (11) is opened, the controller (3) controls the electromagnetic valve (7) to control the opening of the nitrogen pneumatic valve (10);
when the controller (3) receives signals of opening the micro switch (11) and the metal inductive switch (12), the controller (3) controls the electromagnetic valve (7) to control the opening of the oxygen pneumatic valve (5) and the gas pneumatic valve (6).
6. Flame brazing device according to claim 1, wherein said controller (3) comprises a touch screen display (13), said touch screen display (13) being arranged away from said welding torch (4), said controller (3) being capable of controlling the opening of the valves of said oxygen inlet line (1) and said gas inlet line (2) when the PLC of said controller (3) receives an adjustment signal from said touch screen display (13).
7. Flame soldering device according to claim 1 or 6, characterized in that the flame soldering device comprises a mixing line (14) for mixing oxygen and gas, the oxygen supply line (1) and the gas supply line (2) being connected to the mixing line (14), the mixing line (14) being connected to the welding torch (4).
8. Flame brazing device according to claim 1, wherein an oxygen flow control sensor (15) and an oxygen pressure sensor (25) are arranged on the oxygen input line (1), a gas flow control sensor (16) and a gas pressure sensor (26) are arranged on the gas input line (2), and the oxygen flow control sensor (15), the oxygen pressure sensor (25), the gas flow control sensor (16) and the gas pressure sensor (26) are all connected with the controller (3).
9. Flame brazing device according to claim 1, wherein at least one oxygen tempering valve (17) is arranged on the oxygen inlet line (1), at least one gas tempering valve (18) is arranged on the gas inlet line (2), and a tempering valve (19) is arranged on the mixing line (14) for mixing oxygen and gas.
10. Flame brazing device according to claim 1, wherein an oxygen filter (20) is arranged on said oxygen inlet line (1); and a gas filter (21) is arranged on the gas input pipeline (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022112351.5U CN213945208U (en) | 2020-09-23 | 2020-09-23 | Flame brazing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022112351.5U CN213945208U (en) | 2020-09-23 | 2020-09-23 | Flame brazing device |
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| Publication Number | Publication Date |
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| CN213945208U true CN213945208U (en) | 2021-08-13 |
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| CN202022112351.5U Active CN213945208U (en) | 2020-09-23 | 2020-09-23 | Flame brazing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023155615A1 (en) * | 2022-02-21 | 2023-08-24 | 绍兴新锐大进焊接设备有限公司 | Flame brazing control method and automatic welding machine used for copper-aluminum welding |
-
2020
- 2020-09-23 CN CN202022112351.5U patent/CN213945208U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023155615A1 (en) * | 2022-02-21 | 2023-08-24 | 绍兴新锐大进焊接设备有限公司 | Flame brazing control method and automatic welding machine used for copper-aluminum welding |
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