CN116085332A - Gas circuit control system and control method for reverse pressure of resistance welding machine - Google Patents
Gas circuit control system and control method for reverse pressure of resistance welding machine Download PDFInfo
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- 230000002441 reversible effect Effects 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims description 9
- 238000003466 welding Methods 0.000 title abstract description 81
- 230000007246 mechanism Effects 0.000 claims abstract description 94
- 238000003860 storage Methods 0.000 claims description 24
- 238000003825 pressing Methods 0.000 claims description 16
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 230000003584 silencer Effects 0.000 claims description 9
- 230000000670 limiting effect Effects 0.000 claims description 7
- 238000013459 approach Methods 0.000 claims description 3
- 230000002829 reductive effect Effects 0.000 abstract description 7
- 230000003139 buffering effect Effects 0.000 description 14
- 230000006872 improvement Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 7
- 230000005611 electricity Effects 0.000 description 6
- 230000006837 decompression Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000001743 silencing effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 230000009467 reduction Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/36—Auxiliary equipment
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/06—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
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- Engineering & Computer Science (AREA)
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- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to the technical field of gas circuit control systems, in particular to a gas circuit control system for reverse pressure of a resistance welding machine, which comprises a pressurizing mechanism, wherein a first gas inlet end and a second gas inlet end are respectively arranged on two sides of the pressurizing mechanism, and the first gas inlet end and the second gas inlet end are respectively connected with a downward gas circuit and a buffer gas circuit; the air pressure is provided for the pressurizing mechanism through the downward air passage and the buffer air passage, and the air pressure of the buffer air passage is smaller than that of the downward air passage. According to the technical scheme, the buffer gas circuit is used for providing the gas pressure smaller than the pressure of the lower pressure gas circuit, so that the movement speed of the movable end of the pressurizing mechanism can be reversely blocked, the movable end is decelerated and conveyed more stably, the impact and noise generated by the movable end during welding are effectively reduced, the requirement of small-pressure welding is met, and the damage to a welding tool and a workpiece is reduced.
Description
Technical Field
The invention relates to the technical field of gas circuit control systems, in particular to a gas circuit control system and a control method for reverse pressure of a resistance welding machine.
Background
With the vigorous development of the chinese industry, the requirements on welding technology are increasing, and a welding machine capable of performing high-quality welding is the greatest requirement of modern factories. The key point of the welding machine for high-quality and high-efficiency welding is to have a high-efficiency and high-precision control system. In the actual production process, a gas path control system comprising a gas cylinder, a pressure reducing valve and a pressure increasing valve is adopted to control the welding machine, but ideal welding workpieces cannot be obtained in most cases.
Chinese patent CN214079726U discloses a pneumatic structure of a welding fixture for welding a bernabao support, the pneumatic structure includes an air source processing device, a control element, an electrode, the control element includes a welding cylinder control element, the welding cylinder control element includes a welding cylinder reversing valve, the electrode includes a welding cylinder, the welding cylinder reversing valve is connected with the welding cylinder, there are a pressurization pipeline and a pre-compression pipeline between the air source processing device and the welding cylinder control element, the pressurization pipeline includes the air source processing device that connects gradually, the pressurization valve, a selection valve and the welding cylinder control element, the pre-compression pipeline includes the air source processing device that connects gradually, the pre-compression valve, a selection valve and the welding cylinder control element. The welding process to the work piece is realized to this patent, but the pre-compaction stage pressure of welding cylinder is little, and the piston rod velocity of movement in the welding cylinder is slow, greatly reduced whole welding equipment's work efficiency, and the during operation of pressurization valve moreover, the working pressure of this pneumatic structure's welding cylinder increases, under the prerequisite of guaranteeing pressure, and the impact force of welding cylinder to the work piece is great to the welding effect has been influenced.
Chinese patent CN115156684a discloses a resistance welder and a gas circuit control system for the resistance welder, comprising a gas source assembly triplet, a main gas source pressure switch, a gas storage tank, a power-off protection valve, a welding cylinder, a third solenoid valve, a first exhaust solenoid valve, a second exhaust solenoid valve, a first flow limiting valve, a muffler, a first solenoid valve, a welding pressure switch, a pressure regulating valve, a check valve, a second solenoid valve, and a second flow limiting valve. The first electromagnetic valve and the first exhaust electromagnetic valve promote the accelerated motion of the piston rod, and the welding efficiency is greatly improved. The speed of the piston rod can be reduced by the pressure regulating valve, the second exhaust electromagnetic valve and the first flow limiting valve, and the impact force on a workpiece is reduced. In this patent, the piston rod is decelerated by reducing the driving air pressure, but the piston rod still has motion inertia during deceleration, and the deceleration effect of the piston rod is poor.
In summary, when the welding workpiece of the resistance welding machine needs small pressure, the welding cylinder is too heavy in dead weight, so that the welding piece of the welding cylinder is fast in pressing down, and the impact force of the welding piece on the workpiece is large, so that the welding effect is poor.
Disclosure of Invention
The invention aims to provide a gas circuit control system for reverse pressure of a resistance welding machine, and aims to solve the technical problem that an existing resistance welding machine is poor in welding effect due to the fact that a welding cylinder is too heavy in dead weight and impact force of a welding piece on a workpiece is large.
The invention aims at providing a resistance welding machine.
The invention aims at providing a control method of a gas circuit control system.
In order to achieve the above purpose, the present invention provides a gas path control system for reverse pressure of a resistance welder, which comprises a pressurizing mechanism, wherein two sides of the pressurizing mechanism are respectively provided with a first gas inlet end and a second gas inlet end, the first gas inlet end and the second gas inlet end are respectively connected with a pressing gas path and a buffer gas path, and the pressurizing mechanism is provided with a movable end which reciprocates relative to the first gas inlet end and the second gas inlet end; wherein,,
the air pressure is provided for the pressurizing mechanism through the downward air passage and the buffer air passage, and the air pressure of the buffer air passage is smaller than that of the downward air passage.
As a further improvement of the invention: the pressurizing mechanism is provided with at least two inductors.
As a further improvement of the invention: the pressurizing mechanism is sequentially connected with a first sensor, a second sensor and a third sensor.
As a further improvement of the invention: the movable end of the pressurizing mechanism passes through a path between the first sensor and the second sensor to form a first path, and passes through a path between the second sensor and the third sensor to form a second path; wherein,,
when the movable end of the pressurizing mechanism enters the second path, the buffer gas circuit provides gas pressure for the pressurizing mechanism.
As a further improvement of the invention: the air source assembly is further included, the air inlet ends of the pressing air channel and the buffering air channel are connected with the air source assembly, the pressing air channel is connected with the first air inlet end of the pressurizing mechanism, and the air outlet end of the buffering air channel is connected with the second air inlet end of the pressurizing mechanism.
As a further improvement of the invention: the air inlet end of the jacking air channel is connected with the air source assembly, and the air outlet end of the jacking air channel is connected with the second air inlet end of the pressurizing mechanism.
As a further improvement of the invention: the air inlet end of the air storage tank is connected with the air source assembly, and the air outlet end of the air storage tank is connected with the downward-pressure air path, the buffer air path and the jacking air path respectively.
As a further improvement of the invention: the air inlet device comprises an air inlet device, a pressurizing mechanism, a pressurizing valve, a pressure reducing valve, a muffler and a pressure reducing valve.
As a further improvement of the invention: and a jacking speed regulating valve is connected between the third end of the lower pressure electromagnetic valve and the silencer.
As a further improvement of the invention: the jacking air path comprises a jacking electromagnetic valve, a first end of the jacking electromagnetic valve is connected with the air storage tank, a second end of the jacking electromagnetic valve is connected with the pressurizing mechanism, and a third end of the jacking electromagnetic valve is connected with the silencer.
As a further improvement of the invention: a down-pressure speed regulating valve is connected between the third end of the jacking electromagnetic valve and the silencer.
As a further improvement of the invention: the buffer gas circuit comprises a switching valve, a first end of the switching valve is connected with a second end of the jacking electromagnetic valve, a second end of the switching valve is connected with the pressurizing mechanism, and a third end of the switching valve is connected with the gas storage tank.
As a further improvement of the invention: the buffer gas circuit comprises an electric proportional valve, a first end of the electric proportional valve is connected with the gas storage tank, and a second end of the electric proportional valve is connected with a third end of the switching valve.
In order to achieve the second objective, the present invention provides a resistance welder, which includes the gas path control system.
In order to achieve the third objective, the present invention provides a control method of a gas circuit control system, including the following steps:
the down-pressure air channel and the buffer air channel are respectively connected with a first air inlet end and a second air inlet end of the pressurizing mechanism;
the pressurizing mechanism is provided with air pressure through the downward-pressure air channel, and the movable end of the pressurizing mechanism is driven to move;
and detecting the position of the movable end of the pressurizing mechanism, and providing air pressure smaller than the pressure of the lower air passage for the pressurizing mechanism through the buffer air passage when the movable end approaches to the movement limiting point.
Compared with the prior art, the invention has the following beneficial effects:
the gas circuit control system of this technical scheme includes pressurizing mechanism, pressurizing mechanism's both sides are provided with first inlet end, second inlet end respectively, first inlet end the second inlet end is connected with pushing down gas circuit, buffering gas circuit respectively, pressurizing mechanism is provided with relatively first inlet end the second inlet end reciprocating motion's expansion end, through buffering gas circuit provides the atmospheric pressure that is less than pushing down gas circuit pressure, can reverse the speed of movement that obstructs pressurizing mechanism expansion end, makes the expansion end slow down and carry more steadily, effectively reduces the impact and the noise that the expansion end produced when the welding, satisfies little pressure welding's requirement, reduces the damage to welding frock and work piece.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an embodiment of a gas circuit control system of the present application;
FIG. 2 is a front view of an embodiment of a resistance welder of the present application;
FIG. 3 is a side view of an embodiment of a resistance welder of the present application.
Reference numerals illustrate:
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if a directional indication (such as up, down, left, right, front, and rear … …) is involved in the embodiment of the present invention, the directional indication is merely used to explain the relative positional relationship, movement condition, etc. between the components in a specific posture, and if the specific posture is changed, the directional indication is correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if "and/or" and/or "are used throughout, the meaning includes three parallel schemes, for example," a and/or B "including a scheme, or B scheme, or a scheme where a and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
When the welding workpiece of the existing resistance welding machine needs small pressure, the welding cylinder is too heavy in dead weight, the welding piece of the welding cylinder is fast in pressing down speed, and the impact force of the welding piece on the workpiece is large, so that the welding effect is poor.
The invention aims to provide a gas circuit control system for reverse pressure of a resistance welding machine, and aims to solve the technical problem that the existing resistance welding machine is poor in welding effect due to the fact that the dead weight of a welding cylinder is too heavy and the impact force of a welding piece on a workpiece is large.
Referring to fig. 1-3, in an embodiment of the air path control system in the present technical solution, the air path control system includes a pressurizing mechanism 5, two sides of the pressurizing mechanism 5 are respectively provided with a first air inlet end and a second air inlet end, the first air inlet end and the second air inlet end are respectively connected with a pressing air path and a buffering air path, and the pressurizing mechanism 5 is provided with a movable end that reciprocates relative to the first air inlet end and the second air inlet end; wherein,,
the air pressure is provided for the pressurizing mechanism 5 through the downward air passage and the buffer air passage, and the air pressure of the buffer air passage is smaller than that of the downward air passage.
Specifically, in this embodiment, the pressurizing mechanism 5 is specifically a driving cylinder, the movable end is a piston rod of the cylinder, and the movable end is driven by air pressure provided by the downward air paths and the buffer air paths on two sides, and can reciprocate relative to the first air inlet end and the second air inlet end. The movable end is connected with a welding piece, and the welding piece moves downwards under the driving of the downward-pressing gas circuit to weld the workpiece.
The gas circuit control system of this technical scheme includes pressurization mechanism 5, the both sides of pressurization mechanism 5 are provided with first inlet end, second inlet end respectively, first inlet end the second inlet end is connected with pushing down gas circuit, buffering gas circuit respectively, pressurization mechanism 5 is provided with relative first inlet end the second inlet end reciprocating motion's expansion end, provides the atmospheric pressure that is less than pushing down gas circuit pressure through buffering gas circuit, can reverse the speed of movement that obstructs pressurization mechanism 5 expansion end, makes the expansion end slow down and carry more steadily, effectively reduces the impact and the noise that the expansion end produced when the welding, satisfies little pressure welding's requirement, reduces the damage to welding frock and work piece.
Further, in one embodiment, in order to limit the movement range of the movable end, the pressurizing mechanism 5 is provided with at least two sensors, and the two sensors are respectively disposed at two ends of the pressurizing mechanism 5, and when the movable end is detected to reach two ends of the pressurizing mechanism 5, it can be determined that the welding member reaches the movement origin or limiting point.
Further, in one embodiment, the pressurizing mechanism 5 is sequentially connected to a first sensor 11, a second sensor 12, and a third sensor 13. The movable end of the pressurizing mechanism 5 is a first path passing through a path between the first sensor 11 and the second sensor 12, and a second path passing through a path between the second sensor 12 and the third sensor 13; wherein,,
when the movable end of the pressurizing mechanism 5 enters the second path, the buffer air path provides air pressure for the pressurizing mechanism 5.
Specifically, referring to fig. 2, in the present embodiment, the second sensor 12 is closer to the third sensor 13 than the first sensor 11, the path between the second sensor 12 and the third sensor 13 is the second path, and when the movable end enters the second path, the movable end is blocked reversely by the buffer air path, so as to achieve a deceleration effect, and the welding piece on the movable end can contact the workpiece smoothly, so as to ensure welding quality.
It can be understood that when the movable end is in the first path, the pressure-reducing air path can provide larger air pressure, so that the movable end can be quickly lowered, and the high-efficiency welding requirement is met; when the second sensor 12 detects the movable end, i.e. enters the deceleration path, the buffer gas path immediately provides the reverse gas pressure.
It should be noted that, in other embodiments, when the welding operation does not have to meet the requirement of efficient operation, the pressing air path and the buffer air path can simultaneously provide air pressure, and the movable end can slowly move under lower air pressure to smoothly contact the workpiece.
Further, in an embodiment, the air supply device further comprises an air supply assembly 1, the air inlet ends of the pressing air channel and the buffering air channel are connected with the air supply assembly 1, the pressing air channel is connected with the first air inlet end of the pressurizing mechanism 5, and the air outlet end of the buffering air channel is connected with the second air inlet end of the pressurizing mechanism 5.
Specifically, in this embodiment, the air source assembly 1 is configured to provide compressed air, so that the air enters the pressurizing mechanism 5 through the pressing air path and the buffering air path respectively, and provides driving forces in different directions for the movable end of the pressurizing mechanism 5.
Further, in an embodiment, the device further includes a jacking air channel, an air inlet end of the jacking air channel is connected with the air source assembly 1, and an air outlet end of the jacking air channel is connected with a second air inlet end of the pressurizing mechanism 5.
Specifically, in this embodiment, the lifting air path is used to drive the movable end to lift, so that the movable end and the welding piece are restored to the original positions.
Further, in an embodiment, the air-conditioning system further comprises an air storage tank 2, an air inlet end of the air storage tank 2 is connected with the air source assembly 1, and an air outlet end of the air storage tank 2 is respectively connected with the pressing air path, the buffer air path and the jacking air path.
Specifically, in the gas circuit system of the resistance welder of the embodiment, external compressed air supply is manually regulated through the gas source component 1, the pressure is kept constant when the pressure is pressed down, then the gas is stored by the gas storage tank 2 to enable the gas supply quantity to be stably and continuously output, and three gas circuits are used for providing gas sources after the gas is output by the gas storage tank 2.
Further, in one embodiment, the pressure reducing air path includes a pressure reducing electromagnetic valve 4, a first end of the pressure reducing electromagnetic valve 4 is connected to the air storage tank 2, a second end of the pressure reducing electromagnetic valve 4 is connected to the pressurizing mechanism 5, and a third end of the pressure reducing electromagnetic valve 4 is connected to a muffler.
Specifically, in this embodiment, when the movable end needs to rise, the lifting air path provides air pressure to operate, the down-pressure air path closes the air inlet, and the air in the pressurizing mechanism 5 passes through the third end of the down-pressure electromagnetic valve 4 and is discharged from the air path under the silencing effect of the silencer.
Further, in an embodiment, in order to better adjust the rising speed of the movable end, a jacking speed regulating valve 3 is connected between the third end of the lower electromagnetic valve 4 and the silencer, and by adjusting the valve size of the jacking speed regulating valve 3, the air discharge flow rate is controlled, and the movement of the movable end is slowed down or accelerated.
Further, in one embodiment, the jacking air path includes a jacking electromagnetic valve 7, a first end of the jacking electromagnetic valve 7 is connected with the air storage tank 2, a second end of the jacking electromagnetic valve 7 is connected with the pressurizing mechanism 5, and a third end of the jacking electromagnetic valve 7 is connected with the muffler.
Specifically, in the present embodiment, when the movable end needs to descend, the air pressure is provided by the air pressure reducing passage, the air inlet is closed by the jacking air passage, and the air in the pressurizing mechanism 5 passes through the third end of the jacking electromagnetic valve 7 and is discharged from the air passage under the silencing action of the silencer.
Further, in an embodiment, in order to better adjust the descending speed of the movable end, a pressing speed regulating valve 9 is connected between the third end of the lifting electromagnetic valve 7 and the silencer, and by adjusting the valve size of the pressing speed regulating valve 9, the air discharging flow rate is controlled, and the movement of the movable end is slowed down or accelerated.
Further, in one embodiment, the buffer gas path includes a switching valve 6, a first end of the switching valve 6 is connected to a second end of the jacking solenoid valve 7, a second end of the switching valve 6 is connected to the pressurizing mechanism 5, and a third end of the switching valve 6 is connected to the gas tank 2.
Specifically, in this embodiment, the switching valve 6 is used to switch the air path, when the movable end is required to rise, the switching valve 6 closes the third end, air flows into the jacking electromagnetic valve 7 through the air storage tank 2, flows out from the second end of the jacking electromagnetic valve 7, flows through the first end and the second end of the switching valve 6, and enters the pressurizing mechanism 5; when the movable end is required to descend for deceleration, the lifting electromagnetic valve 7 is closed at the first end, and air flows into the third end of the switching valve 6 through the air storage tank 2, flows out from the second end of the switching valve, and flows into the pressurizing mechanism 5.
Further, in one embodiment, the buffer gas circuit includes an electrical proportional valve 8, a first end of the electrical proportional valve 8 is connected to the gas tank 2, and a second end of the electrical proportional valve 8 is connected to a third end of the switching valve 6.
Specifically, in the present embodiment, the electric proportional valve 8 is used to quantitatively adjust the air flow rate, thereby adjusting the air pressure of the buffer air path.
The invention also provides a resistance welding machine, which comprises the gas circuit control system, and the specific structure of the gas circuit control system refers to the embodiment. Because the resistance welder adopts all the technical schemes of all the embodiments of the gas circuit control system, the resistance welder at least has all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted.
The invention also provides a control method applied to the gas path control system, which comprises the following steps:
s1: the down-pressure air channel and the buffer air channel are respectively connected with a first air inlet end and a second air inlet end of the pressurizing mechanism;
s2: the pressurizing mechanism is provided with air pressure through the downward-pressure air channel, and the movable end of the pressurizing mechanism is driven to move;
s3: and detecting the position of the movable end of the pressurizing mechanism, and providing air pressure smaller than the pressure of the lower air passage for the pressurizing mechanism through the buffer air passage when the movable end approaches to the movement limiting point.
Specifically, in this embodiment, the control method is applied to the air path control system of the above embodiment, in the air path control system, external compressed air supply is manually adjusted by the air source assembly 1, the pressure is kept constant when the pressure is pressed down, then the air is stored by the air storage tank 2 to make the air supply amount output steadily and continuously, and after the air is output by the air storage tank 2, three air paths are used for providing air sources:
a pressure reducing gas path: the air source is supplied to the first end (P port) of the lower pressure solenoid valve 4, and then is connected to the first air inlet end (lower pressure joint) of the pressurizing mechanism 5 through the second end (A port) of the lower pressure solenoid valve 4, and the movable end of the pressurizing mechanism 5 is driven to be depressed by the air path.
Jacking air path: the air source is supplied to the first end (P port) of the lifting electromagnetic valve 7, is connected with the first end (P port) of the switching valve 6, and is connected to the second air inlet end (lifting interface) of the pressurizing mechanism 5 through the second end (A port) of the switching valve 6, and the section of air path drives the movable end of the pressurizing mechanism 5 to lift.
Buffer gas circuit: the air source is supplied to the electric proportional valve 8, and is connected with the third end (R port) of the switching valve 6 through the electric proportional valve 8, and the air path is used for buffering and decompression of the movable end.
In an initial state, the lower pressure electromagnetic valve 4 loses electricity F1, the lifting electromagnetic valve 7 gets electricity F2, the switching valve 6 gets electricity F2, the cylinder is in a lifting state at the moment, and the air source is connected to the muffler 10 through the lifting speed regulating valve 3 to be discharged;
in the downward pressure state, the downward pressure electromagnetic valve 4 is at the power-on F2 position, the jacking electromagnetic valve 7 is at the power-off F1 position, the switching valve 6 is at the power-on F2 position, the air cylinder is in the downward pressure state at the moment, and the air source is connected to the muffler 10 through the downward pressure speed regulating valve 9 for discharging.
In a certain embodiment, for example, the welding pressure of a certain workpiece needs 0.2Map, the air source assembly 1 inputs the manual adjustment air pressure 0.5Map, the lower pressure electromagnetic valve 4 is at the power-on F2 position, the jacking electromagnetic valve 7 is at the power-off F1 position, the switching valve 6 is at the power-on position, and the pressurizing mechanism 5 is rapidly lowered from the position of the first sensor 11 of the sensor;
when the pressurizing mechanism 5 reaches the position of the second sensor 12, the switching valve 6 loses the electricity F1 position, the air pressure set by the electric proportional valve 8 is 0.3Map, the second air inlet end (ascending interface) of the pressurizing mechanism 5 is connected through the switching valve 6, the pressure difference between the air path and the air path is 0.2Map, the stage is a buffering and decompression stage, the pressure of the pressurizing mechanism 5 is reduced, the speed is slowed down, the movable end of the pressurizing mechanism 5 steadily drops to the position of the third sensor 13, then the welding is completed according to the current pressure of 0.2Map, and finally the initial state is returned.
In one embodiment, for example, a workpiece welding pressure of 0.5Map is required, rapid ascent and descent are required, and no significant shock is generated. The air source assembly 1 inputs a manual air pressure adjustment 0.5Map, the lower electromagnetic valve 4 is at the power-on F2 position, the jacking electromagnetic valve 7 is at the power-off F1 position, the switching valve 6 is at the power-on F2 position, and the pressurizing mechanism 5 is rapidly lowered from the position of the first sensor 11;
when the pressurizing mechanism 5 reaches the position of the second sensor 12, the switching valve 6 loses the electricity F1 position, the air pressure set by the electric proportional valve 8 is 0.3Map, the second air inlet end (ascending interface) of the pressurizing mechanism 5 is connected through the switching valve 6, the pressure difference between the air path and the air path is 0.2Map, the stage is a buffering and decompression stage, the pressurizing mechanism steadily descends at the moment, the impact force is greatly reduced, when the pressurizing mechanism passes through the position of the second sensor 12, the switching valve 6 gets the electricity F2 position, the descending electromagnetic valve is reconnected, the air is rapidly discharged through the descending speed regulating valve, the welding pressure returns to 0.5Map at the moment, and the welding is completed, and the initial state is returned.
The pneumatic circuit of the technical scheme mainly realizes three functions of acceleration, buffering and decompression, solves the problem that products need small pressure welding, and meets the requirement of rapid rising/falling; the gas circuit system for controlling the pressure reversely by the resistance welder has the advantages of simple structure, stable conveying, effective reduction of impact and noise, beat lifting and clear overall thought of the gas circuit system.
The foregoing description is only of the optional embodiments of the present invention, and is not intended to limit the scope of the invention, and all the equivalent structural changes made by the description of the present invention and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (10)
1. The gas circuit control system for the reverse pressure of the resistance welder is characterized by comprising a pressurizing mechanism, wherein a first gas inlet end and a second gas inlet end are respectively arranged on two sides of the pressurizing mechanism, the first gas inlet end and the second gas inlet end are respectively connected with a downward gas circuit and a buffer gas circuit, and the pressurizing mechanism is provided with a movable end which moves back and forth relative to the first gas inlet end and the second gas inlet end; wherein,,
the air pressure is provided for the pressurizing mechanism through the downward air passage and the buffer air passage, and the air pressure of the buffer air passage is smaller than that of the downward air passage.
2. The gas circuit control system for reverse pressure of resistance welder according to claim 1, wherein the pressurizing mechanism is sequentially connected with a first sensor, a second sensor and a third sensor.
3. The gas circuit control system for reverse pressure of a resistance welder according to claim 2, wherein a path of the movable end of the pressurizing mechanism passing between the first sensor and the second sensor is a first path, and a path passing between the second sensor and the third sensor is a second path; wherein,,
when the movable end of the pressurizing mechanism enters the second path, the buffer gas circuit provides gas pressure for the pressurizing mechanism.
4. The gas circuit control system for reverse pressure of resistance welder according to claim 1, further comprising a gas source assembly, wherein the gas inlet ends of the down-pressing gas circuit and the buffer gas circuit are both connected with the gas source assembly, the down-pressing gas circuit is connected with the first gas inlet end of the pressurizing mechanism, and the gas outlet end of the buffer gas circuit is connected with the second gas inlet end of the pressurizing mechanism;
the air inlet end of the jacking air channel is connected with the air source assembly, and the air outlet end of the jacking air channel is connected with the second air inlet end of the pressurizing mechanism.
5. The gas circuit control system for reverse pressure of resistance welder according to claim 4, further comprising a gas storage tank, wherein an air inlet end of the gas storage tank is connected with the air source assembly, and an air outlet end of the gas storage tank is connected with the down-pressure gas circuit, the buffer gas circuit and the jacking gas circuit, respectively.
6. The gas circuit control system for reverse pressure of resistance welder according to claim 5, wherein the lower pressure gas circuit comprises a lower pressure solenoid valve, a first end of the lower pressure solenoid valve is connected with the gas storage tank, a second end of the lower pressure solenoid valve is connected with the pressurizing mechanism, and a third end of the lower pressure solenoid valve is connected with a muffler;
and a jacking speed regulating valve is connected between the third end of the lower pressure electromagnetic valve and the silencer.
7. The gas circuit control system for reverse pressure of a resistance welder according to claim 6, wherein the jacking gas circuit comprises a jacking solenoid valve, a first end of the jacking solenoid valve is connected with the gas storage tank, a second end of the jacking solenoid valve is connected with the pressurizing mechanism, and a third end of the jacking solenoid valve is connected with the muffler;
a down-pressure speed regulating valve is connected between the third end of the jacking electromagnetic valve and the silencer.
8. The gas circuit control system for reverse pressure of a resistance welder according to claim 7, wherein the buffer gas circuit comprises a switching valve, a first end of the switching valve is connected with a second end of the jacking solenoid valve, a second end of the switching valve is connected with the pressurizing mechanism, and a third end of the switching valve is connected with the gas storage tank;
the buffer gas circuit comprises an electric proportional valve, a first end of the electric proportional valve is connected with the gas storage tank, and a second end of the electric proportional valve is connected with a third end of the switching valve.
9. A resistance welder comprising a gas circuit control system as claimed in any one of claims 1 to 8.
10. The control method of the gas path control system is characterized by comprising the following steps of:
the down-pressure air channel and the buffer air channel are respectively connected with a first air inlet end and a second air inlet end of the pressurizing mechanism;
the pressurizing mechanism is provided with air pressure through the downward-pressure air channel, and the movable end of the pressurizing mechanism is driven to move;
and detecting the position of the movable end of the pressurizing mechanism, and providing air pressure smaller than the pressure of the lower air passage for the pressurizing mechanism through the buffer air passage when the movable end approaches to the movement limiting point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310109792.5A CN116085332A (en) | 2023-02-10 | 2023-02-10 | Gas circuit control system and control method for reverse pressure of resistance welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310109792.5A CN116085332A (en) | 2023-02-10 | 2023-02-10 | Gas circuit control system and control method for reverse pressure of resistance welding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116085332A true CN116085332A (en) | 2023-05-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310109792.5A Pending CN116085332A (en) | 2023-02-10 | 2023-02-10 | Gas circuit control system and control method for reverse pressure of resistance welding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116085332A (en) |
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2023
- 2023-02-10 CN CN202310109792.5A patent/CN116085332A/en active Pending
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