CN210306248U - Laser cutting gas circuit control device and system - Google Patents
Laser cutting gas circuit control device and system Download PDFInfo
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- CN210306248U CN210306248U CN201920939501.4U CN201920939501U CN210306248U CN 210306248 U CN210306248 U CN 210306248U CN 201920939501 U CN201920939501 U CN 201920939501U CN 210306248 U CN210306248 U CN 210306248U
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- 238000003698 laser cutting Methods 0.000 title claims abstract description 41
- 238000005520 cutting process Methods 0.000 claims abstract description 51
- 238000001514 detection method Methods 0.000 claims abstract description 34
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 239
- 239000001301 oxygen Substances 0.000 claims description 170
- 229910052760 oxygen Inorganic materials 0.000 claims description 170
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 164
- 239000007789 gas Substances 0.000 claims description 131
- 229910052757 nitrogen Inorganic materials 0.000 claims description 118
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 18
- 239000012535 impurity Substances 0.000 claims description 15
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 5
- 229910001882 dioxygen Inorganic materials 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 8
- 229910001873 dinitrogen Inorganic materials 0.000 description 9
- 239000000463 material Substances 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a laser cutting gas circuit control device and a system, relating to the technical field of laser cutting, comprising a control system, at least one path of gas pipeline and a cutting head input port; each gas pipeline comprises a gas pressure reducing valve, a pipeline filter, a pressure detection valve, an electromagnetic valve and a one-way valve which are connected in sequence; the pressure detection valve and the electromagnetic valve in each gas pipeline are connected with a control system; the one-way valve of each gas pipeline is connected with the input port of the cutting head. The utility model discloses can improve gaseous purity in the gas circuit, promote gaseous atmospheric pressure stability, and then improve laser cutting processing technology.
Description
Technical Field
The utility model belongs to the technical field of the laser cutting technique and specifically relates to a laser cutting gas circuit controlling means and system are related to.
Background
In the process of cutting and processing of the laser equipment, gas path factors have a very critical influence on the cutting effect and directly determine whether a cutting workpiece meets the processing standard or not.
The laser cutting gas circuit in the prior art is influenced by gas cleanliness, analog voltage, numerical control system control and the like, has the problem of air pressure fluctuation, easily causes the gas pipeline to burst when the gas pressure is too high, easily causes damage to the internal optical lens of a cutting head when the cutting gas pressure is too low or impurities are contained in the gas, even causes damage to the optical fiber of a laser generator when the cutting gas pressure is too low, and the processed workpiece is scrapped, thereby causing the poor reliability of the laser cutting processing technology.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a laser cutting gas circuit controlling means and system can improve the purity of gas in the gas circuit and promote gaseous atmospheric pressure stability betterly, helps further improving the reliability of laser cutting processing technology.
In a first aspect, the utility model provides a laser cutting gas circuit control device, which comprises a control system, at least one path of gas pipeline and a cutting head input port;
each gas pipeline comprises a gas pressure reducing valve, a pipeline filter, a pressure detection valve, an electromagnetic valve and a one-way valve which are connected in sequence; the pressure detection valve and the electromagnetic valve in each gas pipeline are connected with the control system; and the one-way valve of each gas pipeline is connected with the input port of the cutting head.
Further, the gas pipeline comprises an oxygen pipeline, the oxygen pipeline comprises an oxygen pressure reducing valve, an oxygen pipeline filter, an oxygen pressure detection valve, an oxygen electromagnetic valve, an oxygen one-way valve and an oxygen proportional valve, and the oxygen proportional valve is connected with the control system and the oxygen one-way valve;
the oxygen pressure reducing valve is used for inputting oxygen, regulating the oxygen pressure and conveying the oxygen regulated to be within a first air pressure threshold range to the oxygen pipeline filter;
the oxygen pipeline filter is used for filtering impurities in the oxygen within the first air pressure threshold range and conveying pure oxygen with the impurities being filtered to the oxygen pressure detection valve;
the oxygen pressure detection valve is used for detecting the air pressure of the pure oxygen, comparing the detected air pressure value with a preset second air pressure threshold range, and sending an oxygen pressure signal to the control system according to a comparison result;
the control system is used for inputting the oxygen pressure signal and preset oxygen cutting process parameters, sending an oxygen on-off instruction to the oxygen electromagnetic valve and sending an oxygen pressure control instruction to the oxygen proportional valve;
the oxygen solenoid valve is used for executing the operation corresponding to the oxygen on-off instruction so as to change the on-off state of the oxygen pipeline;
and the oxygen proportional valve is used for adjusting the air pressure of the pure oxygen to the air pressure corresponding to the air pressure control instruction under the on-state of the oxygen pipeline, and outputting the pure oxygen after the air pressure is adjusted through the oxygen one-way valve.
Further, the oxygen pressure signal comprises a first pressure signal and a second pressure signal;
the oxygen pressure detection valve is used for sending the first air pressure signal to the control system when the detected air pressure value is within the second air pressure threshold range, and is also used for sending the second air pressure signal to the control system when the detected air pressure value is not within the second air pressure threshold range.
Further, the on-off command comprises an on command and an off command;
and the control system is used for sending a switch-on instruction to the oxygen electromagnetic valve when the first air pressure signal is input, prompting an alarm signal when the second air pressure signal is input, and sending a switch-off instruction to the oxygen electromagnetic valve.
Further, the first barometric pressure threshold range includes: the oxygen pressure value is less than 0.9 Mpa; the second range of air pressure thresholds comprises: the oxygen pressure value is between 0.3Mpa and 0.8 Mpa.
Furthermore, the oxygen cutting process parameters comprise an adjustable voltage value, and when the adjustable voltage value is 0 to 10V, the pressure of the pure oxygen corresponding to the adjustable voltage value is 0 to 1 Mpa.
Further, the gas pipeline comprises a nitrogen pipeline, and the nitrogen pipeline comprises a nitrogen pressure reducing valve, a nitrogen pipeline filter, a nitrogen pressure detection valve, a nitrogen electromagnetic valve and a nitrogen one-way valve which are sequentially connected;
the nitrogen pressure reducing valve is used for inputting nitrogen, regulating the pressure of the nitrogen and conveying the nitrogen regulated to be within a third pressure threshold range to the nitrogen pipeline filter;
the nitrogen pipeline filter is used for filtering impurities in the nitrogen within the third air pressure threshold range and conveying the purified nitrogen with the impurities being filtered to the nitrogen pressure detection valve;
the nitrogen pressure detection valve is used for detecting the air pressure of the purified nitrogen, comparing the detected air pressure value with a preset fourth air pressure threshold range, and sending a nitrogen air pressure signal to the control system according to a comparison result;
the control system is used for inputting the nitrogen pressure signal and sending a nitrogen on-off instruction to the nitrogen electromagnetic valve;
the nitrogen electromagnetic valve is used for executing the operation corresponding to the nitrogen on-off instruction so as to change the on-off state of the nitrogen pipeline;
and the nitrogen one-way valve is used for outputting the pure nitrogen in the state that the nitrogen pipeline is connected.
Further, under the condition that the oxygen check valve in the oxygen pipeline outputs cutting gas, the nitrogen check valve in the nitrogen pipeline is closed;
under the condition that the cutting gas is output by a nitrogen one-way valve in the nitrogen pipeline, an oxygen one-way valve in the oxygen pipeline is closed;
and the cutting head input port is used for inputting the cutting gas and processing the plate by utilizing the cutting gas.
Further, the third air pressure threshold range includes: the pressure value of nitrogen is less than 2.8 Mpa; the fourth threshold range of air pressure comprises: the pressure value of the nitrogen is between 1.5Mpa and 2.8 Mpa.
In a second aspect, the utility model provides a laser cutting gas circuit control system, which comprises the laser cutting gas circuit control device of the first aspect, and a plate; the plate is arranged below an input port of a cutting head in the laser cutting gas circuit control device.
The embodiment of the utility model provides a following beneficial effect has been brought:
the utility model provides a laser cutting gas circuit control device and a system, which comprises a control system, at least one path of gas pipeline and a cutting head input port; each gas pipeline comprises a gas pressure reducing valve, a pipeline filter, a pressure detection valve, an electromagnetic valve and a one-way valve which are connected in sequence; the gas pressure reducing valve in each gas pipeline can effectively control the gas pressure, ensure the stability of the gas pressure and avoid the pipeline bursting caused by overlarge pressure, and the combination of the pressure detection valve and the electromagnetic valve is connected with the control system and controlled by the control system, so that the gas is further output and then conforms to the processing technology standard; the purity degree of the gas can be improved through the pipeline filter in each gas pipeline, so that the damage rate of the internal optical lens is reduced, and the reliability of the laser cutting machining process is comprehensively improved through the mode.
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 embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are 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 view of a laser cutting gas circuit control device provided in the first embodiment of the present invention;
fig. 2 is a schematic diagram of an oxygen pipeline according to an embodiment of the present invention;
FIG. 3 is a schematic view of a nitrogen pipeline according to a first embodiment of the present invention;
fig. 4 is a schematic view of a laser cutting gas circuit control system provided by the embodiment of the present invention.
Icon: 100-a control system; 210-an oxygen line; 211-oxygen pressure relief valve; 212-oxygen line filter; 213-oxygen pressure detection valve; 214-oxygen solenoid valve; 215-oxygen proportional valve; 216-oxygen check valve; 220-nitrogen line; 221-nitrogen pressure relief valve; a 222-nitrogen line filter; 223-nitrogen pressure check valve; 224-nitrogen solenoid valve; 225-nitrogen check valve; 300-a cutting head input port; 400-plate material.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Gas pressure in order to laser cutting gas circuit can guarantee gaseous purity simultaneously at reasonable within range and according to technological parameter accurate control gas pressure, and then improves laser cutting process level, improve equipment's security, the embodiment of the utility model provides a laser cutting gas circuit controlling means and system can improve gaseous purity in the gas circuit, promotes gaseous atmospheric pressure stability, and then improves laser cutting processing technology.
For the convenience of understanding this embodiment, first, the laser cutting gas circuit control device disclosed in the first embodiment of the present invention is described in detail.
The first embodiment is as follows:
fig. 1 is a schematic view of a laser cutting gas circuit control device according to an embodiment of the present invention.
Referring to fig. 1, the laser cutting gas path control device mainly includes a control system 100, at least one gas pipeline, and a cutting head input port 300. The control system can adopt a CNC control system or a board control system.
Furthermore, each gas pipeline comprises a gas pressure reducing valve, a pipeline filter, a pressure detection valve, an electromagnetic valve and a one-way valve which are connected in sequence; the pressure detection valve and the electromagnetic valve in each gas pipeline are connected with a control system; the one-way valve of each gas line is connected to the cutting head input port 300.
The embodiment will be described by way of example and with reference to a two-way gas pipeline. The first gas pipeline is an oxygen pipeline 210, and the second gas pipeline is a nitrogen pipeline 220.
Referring to the schematic diagram of the oxygen pipeline shown in fig. 2, the oxygen pipeline (i.e., the first gas pipeline) 210 may include: an oxygen pressure reducing valve 211, an oxygen pipeline filter 212, an oxygen pressure detecting valve 213, an oxygen solenoid valve 214 and an oxygen one-way valve 216, and an oxygen proportional valve 215 connected with the control system and the oxygen one-way valve 216.
Wherein, the signal control terminal of the oxygen proportional valve 215 is connected with the signal control terminal of the control system through a control cable, and the analog quantity signal is transmitted by the control cable.
And an oxygen pressure reducing valve 211 for inputting oxygen and adjusting the pressure of the oxygen, and delivering the oxygen adjusted to be within the first air pressure threshold range to the oxygen line filter 212.
In practical applications, the first air pressure threshold range of the present embodiment may include: the oxygen pressure value is less than 0.9 Mpa.
Specifically, after external oxygen is input into the device, the pressure of the gas is firstly reduced through the oxygen pressure reducing valve 211, so that the oxygen pressure is ensured to be within the pressure range which can be borne by the gas cutting pipeline, and the gas pipe is easily burst if the oxygen pressure is greater than a first pressure threshold value.
The oxygen line filter 212 is configured to filter impurities in the oxygen within the first air pressure threshold range, and deliver the purified oxygen with the impurities filtered to the oxygen pressure detection valve 213.
Specifically, after the gas is decompressed, the gas is filtered by the oxygen pipeline filter 212, and impurities such as water vapor, oil stain and large particle molecules in the gas are filtered out, so that the impurities are prevented from entering the cutting head and damaging the optical device, and the equipment cannot be normally used.
And the oxygen pressure detection valve 213 is used for detecting the air pressure of the pure oxygen, comparing the detected air pressure value with a preset second air pressure threshold range, and sending an oxygen pressure signal to the control system according to the comparison result.
The second air pressure threshold range of the present embodiment includes: the oxygen pressure value is between 0.3Mpa and 0.8Mpa, and comprises the oxygen pressure values of two critical points of 0.3Mpa and 0.8 Mpa.
Further, the oxygen pressure signal includes a first pressure signal and a second pressure signal.
The oxygen pressure sensing valve 213 is configured to send a first pressure signal to the control system when the sensed pressure is within a second pressure threshold range, and is further configured to send a second pressure signal to the control system when the sensed pressure is not within the second pressure threshold range.
The control system is used for inputting an oxygen pressure signal and preset oxygen cutting process parameters, sending an oxygen on-off instruction to the oxygen solenoid valve 214, and sending an oxygen pressure control instruction to the oxygen proportional valve 215, wherein the control instruction comprises an analog quantity value, the analog quantity value is matched with the oxygen pressure, the analog quantity value of the embodiment is a 0-10V voltage value, the 0V voltage value corresponds to 0MPa of pressure, and the 10V voltage value corresponds to 0.8MPa of pressure.
And the oxygen solenoid valve 214 is used for executing the operation corresponding to the oxygen on-off command so as to change the on-off state of the oxygen pipeline 210.
Further, the on-off command includes an on command and an off command.
And the control system is used for sending a switch-on instruction to the oxygen solenoid valve 214 when a first air pressure signal is input, prompting an alarm signal when a second air pressure signal is input, and sending a switch-off instruction to the oxygen solenoid valve 214.
Specifically, the gas after being decompressed and filtered enters the oxygen pressure detection valve 213 for detection, and the gas pressure is determined according to a second gas pressure threshold: when the pressure is within the second pressure threshold range, a first pressure signal is sent to the control system, and the control system sends a connection instruction to the oxygen solenoid valve 214 after receiving the first pressure signal; when not in the second atmospheric pressure threshold value scope, send the second atmospheric pressure signal to control system, control system receives second atmospheric pressure signal and sends the disconnection instruction to oxygen solenoid valve 214, and control system can show alarm information on its display screen simultaneously, and suggestion operating personnel alarm signal, equipment stop work, is changed the air supply by the professional this moment or is adjusted gas pressure to within the second atmospheric pressure threshold value scope. The signal control terminal of the control system is connected with the signal terminal of the oxygen pressure detection valve 213 through a control cable, and the control cable transmits signals.
The oxygen proportional valve 215 is configured to adjust the pressure of the pure oxygen to a pressure corresponding to the pressure control command when the oxygen line 210 is in the on state, and output the pure oxygen after adjusting the pressure through the oxygen check valve 216.
Furthermore, the oxygen cutting process parameter comprises an adjustable voltage value, and when the adjustable voltage value is 0 to 10V, the pressure of the pure oxygen corresponding to the adjustable voltage value is 0 to 1 Mpa.
Specifically, one end of the oxygen proportional valve 215 is connected to the oxygen solenoid valve 214, the other end is connected to the oxygen check valve 216, the control system outputs an adjustable voltage value according to the oxygen cutting process parameter, the oxygen proportional valve 215 adjusts the pressure of the gas in the pipeline according to the adjustable voltage value, the adjustable voltage value and the pressure value of the pure oxygen are in a proportional corresponding relationship, the larger the adjustable voltage value is, the larger the pressure of the pure oxygen is, the 0V voltage value corresponds to the 0Mpa pressure value, the 10V voltage value corresponds to the 1Mpa pressure value, and the adjusted pure oxygen is finally output by the oxygen check valve 216.
In addition, the oxygen check valve 216 also has a function of outputting gas only, but not inputting gas, so as to prevent the oxygen pipeline 210 from being disabled, and when the external air pressure is greater than the pipeline air pressure, the external air enters the oxygen pipeline 210 to damage components or pollute the oxygen pipeline 210.
Referring to the nitrogen gas line schematic shown in fig. 3, the nitrogen gas line (i.e., the second gas line) 220 may include: a nitrogen pressure reducing valve 221, a nitrogen line filter 222, a nitrogen pressure detecting valve 223, a nitrogen solenoid valve 224 and a nitrogen check valve 225 which are connected in sequence.
Specifically, the nitrogen pressure reducing valve 221, the nitrogen line filter 222, the nitrogen pressure detecting valve 223, the nitrogen solenoid valve 224, and the nitrogen check valve 225 of the nitrogen line 220 have the same working principle as the oxygen pressure reducing valve 211, the oxygen line filter 212, the oxygen pressure detecting valve 213, the oxygen solenoid valve 214, and the oxygen check valve 216 of the oxygen line 210, and include:
and a nitrogen pressure reducing valve 221 for inputting nitrogen gas and adjusting the pressure of the nitrogen gas, and supplying the nitrogen gas adjusted within a third pressure threshold range to the nitrogen line filter 222.
Wherein the third air pressure threshold range comprises: the pressure value of the nitrogen is less than 2.8 Mpa.
And a nitrogen line filter 222 for filtering impurities in the nitrogen gas within the third air pressure threshold range, and delivering the purified nitrogen gas with the impurities being filtered to the nitrogen pressure detection valve 223.
And the nitrogen pressure detection valve 223 is used for detecting the air pressure of the pure nitrogen, comparing the detected air pressure value with a preset fourth air pressure threshold range, and sending a nitrogen air pressure signal to the control system according to the comparison result.
In practical applications, the fourth air pressure threshold range may include: the nitrogen pressure value is between 1.5MPa and 2.8MPa, and the nitrogen pressure values of two critical points of 1.5MPa and 2.8MPa are included.
The control system is used for inputting a nitrogen pressure signal and sending a nitrogen on-off instruction to the nitrogen solenoid valve 224;
the nitrogen solenoid valve 224 is used for executing the operation corresponding to the nitrogen on-off command so as to change the on-off state of the nitrogen pipeline 220; that is, the control system sends an on command to the nitrogen solenoid valve 224 when the pressure of the purified nitrogen is within the fourth pressure threshold range, and sends an off command to the nitrogen solenoid valve 224 when the pressure of the purified nitrogen is not within the fourth pressure threshold range.
And a nitrogen check valve 225 for outputting the purified nitrogen gas in a state where the nitrogen gas line 220 is connected.
Further, in the case where the oxygen check valve 216 in the oxygen line 210 outputs the cutting gas, the nitrogen check valve 225 in the nitrogen line 220 is closed;
in the case where the nitrogen check valve 225 outputs cutting gas in the nitrogen line 220, the oxygen check valve 216 in the oxygen line 210 is closed.
And a cutting head input port 300 for inputting a cutting gas and processing the plate material 400 using the cutting gas.
Specifically, the cutting gas output by the oxygen check valve 216 in the oxygen pipeline 210 includes oxygen, the cutting gas output by the nitrogen check valve 225 in the nitrogen pipeline 220 includes nitrogen, the cutting head input port 300 can derive the required cutting gas according to the cutting process parameters, the oxygen pipeline outputs gas when oxygen is required, and the nitrogen pipeline outputs gas when nitrogen is required, so that the plate 400 is stably processed.
It is clear to those skilled in the art that, for the convenience and simplicity of description, the specific operation of the nitrogen pipeline may refer to the corresponding process in the foregoing embodiment of the oxygen pipeline, and will not be described herein again.
The utility model provides a laser cutting gas circuit control device, which comprises a control system, at least one path of gas pipeline and a cutting head input port; each gas pipeline comprises a gas pressure reducing valve, a pipeline filter, a pressure detection valve, an electromagnetic valve and a one-way valve which are connected in sequence; the gas pressure reducing valve in each gas pipeline can effectively control the gas pressure, so that the pipeline burst is avoided, and the combination of the pressure detection valve and the electromagnetic valve is connected with the control system and controlled by the control system, so that the gas output meets the processing technology standard; the purity degree of the gas can be improved through the pipeline filter in each gas pipeline, so that the damage rate of the internal optical lens is reduced.
Example two:
fig. 4 is a schematic view of a laser cutting gas circuit control system provided by the second embodiment of the present invention.
Referring to fig. 4, the laser cutting gas path control system includes the laser cutting gas path control device according to the first embodiment, and further includes a plate 400.
The plate 400 is disposed below the input port 300 of the cutting head in the laser cutting gas path control device. During processing, the cutting head input port 300 and the plate material 400 enable the cutting head input port 300 and the plate material 400 to keep a certain distance according to the processing technology requirements, the distance of the embodiment is within the range of 0.3mm-15mm, and the required gas supply is directly provided for processing the plate material 400 after the gas is input from the input port.
The utility model provides a laser cutting gas circuit control system, which comprises a control system, at least one path of gas pipeline and a cutting head input port; each gas pipeline comprises a gas pressure reducing valve, a pipeline filter, a pressure detection valve, an electromagnetic valve and a one-way valve which are connected in sequence; the gas pressure reducing valve in each gas pipeline can effectively control the gas pressure, so that the pipeline burst is avoided, and the combination of the pressure detection valve and the electromagnetic valve is connected with the control system and controlled by the control system, so that the gas output meets the processing technology standard; the purity degree of the gas can be improved through the pipeline filter in each gas pipeline, so that the damage rate of the internal optical lens is reduced.
In the description of the embodiments of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (9)
1. A laser cutting gas circuit control device is characterized by comprising a control system, at least one path of gas pipeline and a cutting head input port;
each gas pipeline comprises a gas pressure reducing valve, a pipeline filter, a pressure detection valve, an electromagnetic valve and a one-way valve which are connected in sequence; the pressure detection valve and the electromagnetic valve in each gas pipeline are connected with the control system; and the one-way valve of each gas pipeline is connected with the input port of the cutting head.
2. The laser cutting gas circuit control device according to claim 1, wherein the gas circuit comprises an oxygen circuit, the oxygen circuit comprises an oxygen pressure reducing valve, an oxygen circuit filter, an oxygen pressure detecting valve, an oxygen solenoid valve and an oxygen one-way valve, and further comprises an oxygen proportional valve connected with the control system and the oxygen one-way valve;
the oxygen pressure reducing valve is used for inputting oxygen, regulating the oxygen pressure and conveying the oxygen regulated to be within a first air pressure threshold range to the oxygen pipeline filter;
the oxygen pipeline filter is used for filtering impurities in the oxygen within the first air pressure threshold range and conveying pure oxygen with the impurities being filtered to the oxygen pressure detection valve;
the oxygen pressure detection valve is used for detecting the air pressure of the pure oxygen, comparing the detected air pressure value with a preset second air pressure threshold range, and sending an oxygen pressure signal to the control system according to a comparison result;
the control system is used for inputting the oxygen pressure signal and preset oxygen cutting process parameters, sending an oxygen on-off instruction to the oxygen electromagnetic valve and sending an oxygen pressure control instruction to the oxygen proportional valve;
the oxygen solenoid valve is used for executing the operation corresponding to the oxygen on-off instruction so as to change the on-off state of the oxygen pipeline;
and the oxygen proportional valve is used for adjusting the air pressure of the pure oxygen to the air pressure corresponding to the air pressure control instruction under the on-state of the oxygen pipeline, and outputting the pure oxygen after the air pressure is adjusted through the oxygen one-way valve.
3. The laser cutting gas circuit control device according to claim 2, wherein the oxygen gas pressure signal comprises a first gas pressure signal and a second gas pressure signal;
the oxygen pressure detection valve is used for sending the first air pressure signal to the control system when the detected air pressure value is within the second air pressure threshold range, and is also used for sending the second air pressure signal to the control system when the detected air pressure value is not within the second air pressure threshold range.
4. The laser cutting gas circuit control device according to claim 3, wherein the on-off command comprises an on command and an off command;
and the control system is used for sending a switch-on instruction to the oxygen electromagnetic valve when the first air pressure signal is input, prompting an alarm signal when the second air pressure signal is input, and sending a switch-off instruction to the oxygen electromagnetic valve.
5. The laser cutting gas path control device of claim 2, wherein the first gas pressure threshold range comprises: the oxygen pressure value is less than 0.9 Mpa; the second range of air pressure thresholds comprises: the oxygen pressure value is between 0.3Mpa and 0.8 Mpa.
6. The laser cutting gas circuit control device according to claim 2, wherein the oxygen cutting process parameter comprises an adjustable voltage value, and when the adjustable voltage value is 0 to 10V, the pressure of the pure oxygen corresponding to the adjustable voltage value is 0 to 1 Mpa.
7. The laser cutting gas circuit control device according to any one of claims 2 to 6, wherein the gas pipeline comprises a nitrogen pipeline, and the nitrogen pipeline comprises a nitrogen pressure reducing valve, a nitrogen pipeline filter, a nitrogen pressure detecting valve, a nitrogen electromagnetic valve and a nitrogen one-way valve which are connected in sequence;
the nitrogen pressure reducing valve is used for inputting nitrogen, regulating the pressure of the nitrogen and conveying the nitrogen regulated to be within a third pressure threshold range to the nitrogen pipeline filter;
the nitrogen pipeline filter is used for filtering impurities in the nitrogen within the third air pressure threshold range and conveying the purified nitrogen with the impurities being filtered to the nitrogen pressure detection valve;
the nitrogen pressure detection valve is used for detecting the air pressure of the purified nitrogen, comparing the detected air pressure value with a preset fourth air pressure threshold range, and sending a nitrogen air pressure signal to the control system according to a comparison result;
the control system is used for inputting the nitrogen pressure signal and sending a nitrogen on-off instruction to the nitrogen electromagnetic valve;
the nitrogen electromagnetic valve is used for executing the operation corresponding to the nitrogen on-off instruction so as to change the on-off state of the nitrogen pipeline;
and the nitrogen one-way valve is used for outputting the pure nitrogen in the state that the nitrogen pipeline is connected.
8. The laser cutting gas circuit control device according to claim 7, wherein in a case that the oxygen check valve in the oxygen pipeline outputs cutting gas, the nitrogen check valve in the nitrogen pipeline is closed;
under the condition that the cutting gas is output by a nitrogen one-way valve in the nitrogen pipeline, an oxygen one-way valve in the oxygen pipeline is closed;
and the cutting head input port is used for inputting the cutting gas and processing the plate by utilizing the cutting gas.
9. The laser cutting gas path control device of claim 7, wherein the third gas pressure threshold range comprises: the pressure value of nitrogen is less than 2.8 Mpa; the fourth threshold range of air pressure comprises: the pressure value of the nitrogen is between 1.5Mpa and 2.8 Mpa.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110142505A (en) * | 2019-06-20 | 2019-08-20 | 济南邦德激光股份有限公司 | laser cutting gas circuit control device and system |
| CN111843198A (en) * | 2020-07-27 | 2020-10-30 | 上海柏楚电子科技股份有限公司 | Method and device for diagnosing gas circuit of machine tool, electronic equipment and storage medium |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110142505A (en) * | 2019-06-20 | 2019-08-20 | 济南邦德激光股份有限公司 | laser cutting gas circuit control device and system |
| CN111843198A (en) * | 2020-07-27 | 2020-10-30 | 上海柏楚电子科技股份有限公司 | Method and device for diagnosing gas circuit of machine tool, electronic equipment and storage medium |
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