CN116551208B - Metal plate laser cutting equipment and method based on cooling of cutting part - Google Patents
Metal plate laser cutting equipment and method based on cooling of cutting part Download PDFInfo
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- CN116551208B CN116551208B CN202310527311.2A CN202310527311A CN116551208B CN 116551208 B CN116551208 B CN 116551208B CN 202310527311 A CN202310527311 A CN 202310527311A CN 116551208 B CN116551208 B CN 116551208B
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- 238000005520 cutting process Methods 0.000 title claims abstract description 119
- 238000001816 cooling Methods 0.000 title claims abstract description 49
- 239000002184 metal Substances 0.000 title claims abstract description 46
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 46
- 238000003698 laser cutting Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 63
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000000110 cooling liquid Substances 0.000 claims abstract description 10
- 239000000428 dust Substances 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 5
- 239000013013 elastic material Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 1
- 238000003754 machining Methods 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 description 18
- 238000005507 spraying Methods 0.000 description 10
- 230000006872 improvement Effects 0.000 description 8
- 230000006698 induction Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Classifications
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
- B23K26/703—Cooling arrangements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention relates to the technical field of sheet metal machining, in particular to sheet metal laser cutting equipment and method based on cooling of a cutting part. The sheet metal laser cutting device comprises a workbench and a cutting head, wherein a driving piece used for driving the cutting head to move is arranged in the workbench, the cutting head is connected with the driving piece through a bearing piece arranged on the top, the cutting device further comprises a cooling part and a water cooler, in the sheet metal laser cutting device and the sheet metal laser cutting method based on cooling of the cutting part, a heat conducting plate is in contact with a cut workpiece to exchange heat, liquid after heat exchange is conveyed into a secondary heat conducting plate, the heat exchange is carried out through the contact between the secondary heat conducting plate and the part of the workpiece which is not cut, and when the cutting head ascends, the liquid in the secondary heat conducting plate is controlled in the secondary heat conducting plate to increase the heat exchange time, so that the temperature of cooling liquid flowing back into the water cooler is reduced, and the cooling efficiency is improved.
Description
Technical Field
The invention relates to the technical field of sheet metal machining, in particular to sheet metal laser cutting equipment and method based on cooling of a cutting part.
Background
The laser cutting machine focuses laser emitted from the laser into laser beams with high power density through an optical path system. The laser beam irradiates the surface of the workpiece to make the workpiece reach the melting point or boiling point, and high-pressure gas coaxial with the laser beam blows away the molten or gasified metal. Along with the movement of the relative positions of the light beam and the workpiece, the material is finally formed into a kerf, so that the aim of cutting is achieved.
In order to prevent the temperature of the cut workpiece from being too high, the phenomenon of scalding workers is prevented. A laser cutting machine for processing equipment shells, the publication number of which is CN 115156739B. The device comprises a frame, a laser cutting device and a water spraying device; the water spraying device comprises a bogie, a water spraying cylinder and two rotating wheels, wherein the bogie is rotationally connected with a laser cutting head of the laser cutting device, the rotating wheels are rotationally arranged at the tail end of the bogie and are abutted against a workpiece, and the water spraying cylinder is supported on the bogie and is positioned on one side of the laser cutting head. The water spraying device is similar to the structure of a universal wheel, the laser cutting head moves towards any direction, the water spraying cylinder is always positioned at the rear position of the laser cutting head to spray water to the cutting seam, the water spraying point is positioned at the rear of the cutting point, so that the cutting seam can be cooled in time, the temperature at the cutting point can be prevented from being influenced, the quality of the cutting seam is high, and the cutting effect is good.
It is known from this patent that the cooling is performed by spraying water from a water spraying device to the cutting part, but in the trigger piece, the work piece still needs to be processed in the next process after cutting, if the cooling is performed by spraying water, the staff still needs to dry after collecting the sheet metal part, and the sprayed water also easily generates water mist and adheres to the equipment, which causes damage to the equipment.
However, if cold water is circulated to the heat-conducting plate, and heat exchange and temperature reduction are performed through the heat-conducting plate, the temperature rising speed of the cold water is rapidly increased due to the excessively high temperature of laser cutting, so that the phenomenon that the refrigerating efficiency cannot keep up with the temperature rising speed is easily caused.
Disclosure of Invention
The invention aims to provide sheet metal laser cutting equipment and method based on cooling of a cutting part, so as to solve the problems in the background technology.
In order to achieve the above object, one of the objects of the present invention is to provide a sheet metal laser cutting device based on cooling of a cutting part, comprising a workbench and a cutting head, wherein a driving member for driving the cutting head to move is arranged in the workbench, the cutting head is connected with the driving member through a bearing member installed at the top, the cutting device further comprises a cooling part and a water cooling machine, wherein:
the cooling part comprises a main heat conducting plate and a secondary heat conducting plate which are positioned behind and in front of the cutting path of the cutting head;
the cooling liquid discharged by the water cooling machine flows back into the water cooling machine after passing through the main heat conducting plate and the secondary heat conducting plate; and a closed valve is arranged in the main heat conducting plate, and when the cutting head ascends, the closed valve cuts off the communication between the main heat conducting plate and the secondary heat conducting plate, so that the liquid in the secondary heat conducting plate loses power and stays in the secondary heat conducting plate to exchange heat with a workpiece.
As a further improvement of the technical scheme, the tops of the main heat conducting plate and the secondary heat conducting plate are respectively communicated with a liquid inlet pipe and a return pipe, and the main heat conducting plate is communicated with the secondary heat conducting plate through a communicating pipe; the liquid is pumped into the liquid inlet pipe after the water cooler is cooled, flows into the secondary heat-conducting plate through the communicating pipe, and flows back into the water cooler through the return pipe;
the heat conducting plate is characterized in that a fixing ring is arranged between the main heat conducting plate and the secondary heat conducting plate, the fixing ring is fixed at the bottom of the bearing piece through a supporting arm, one side of the fixing ring is fixedly connected with the main heat conducting plate, and the other side of the fixing ring is connected with the secondary heat conducting plate through a hinged telescopic rod.
As a further improvement of the technical scheme, the airtight valve comprises a valve seat positioned in the liquid inlet pipe, the top of the valve seat is provided with a valve body in a sliding manner, and the surfaces of the valve body and the valve seat are provided with a plurality of small holes for water to pass through; one end of the valve body protrudes outwards to form a transmission column penetrating through the liquid inlet pipe in a sliding mode, a reset spring used for pulling the valve body to be misplaced with the valve seat is arranged between one end of the transmission column and the side wall of the liquid inlet pipe, and a driving device used for pushing the valve body to move when the cutting head works is further arranged at one end of the transmission column.
As a further improvement of the technical scheme, the driving device is two guide plates respectively arranged at the ends of the two main heat conducting plates and the secondary heat conducting plates, and the two guide plates form a wind gathering cavity at the periphery of the cutting head; the side wall of the guide plate positioned at the top of the main heat conducting plate is provided with an opening, an induction plate fixedly connected with the transmission column is arranged in the opening in a sliding manner, and the induction plate is used for pushing the transmission column to move according to high-pressure gas generated at the nozzle of the cutting head.
As a further improvement of the technical scheme, the driving device is a convex rod, the convex rod longitudinally penetrates through the main heat conducting plate and is in sliding connection with the main heat conducting plate, and an inclined plane for pushing the transmission column to move is formed at the top of the convex rod.
As a further improvement of the technical scheme, an expansion piece is arranged at the middle part of the liquid inlet pipe and is positioned above the airtight valve.
As a further improvement of the technical scheme, a filter screen cover with an opening for intercepting dust nearby is arranged between the guide plate and the liquid inlet pipe, and the filter screen cover is fixed on the side wall of the guide plate through a mounting rod arranged on the side wall.
As a further improvement of the technical scheme, the mounting rod is made of elastic materials, the top of the filter screen cover is fixedly connected with a convex plate, and the side wall of the expansion piece is fixedly connected with a push rod which pushes the convex plate during expansion.
As a further improvement of the technical scheme, the bottom end of the supporting arm is fixedly connected with a connecting ring, the bottom of the connecting ring is rotationally connected with the top of the fixing ring, and one end of the heat conducting plate is provided with a balancing weight.
The second object of the invention is to provide a method for a sheet metal laser cutting device based on cutting part cooling, comprising the following method steps:
s1, driving a cutting head to move in a multi-axis direction by a driving piece, and cutting a sheet metal part;
s2, cooling liquid discharged by the water cooling machine flows back into the main heat conducting plate and the secondary heat conducting plate;
and S3, when the cutting head rises, the closed valve cuts off the communication between the main heat conducting plate and the secondary heat conducting plate, so that the liquid in the secondary heat conducting plate loses power and stays in the secondary heat conducting plate to exchange heat with the workpiece.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the sheet metal laser cutting equipment and method based on cooling of the cutting part, the main heat conducting plate is in contact with the cut workpiece to conduct heat exchange, the liquid after heat exchange is conveyed into the secondary heat conducting plate, the heat exchange is conducted through the contact of the secondary heat conducting plate and the part of the workpiece which is not cut, and when the cutting head ascends, the liquid in the secondary heat conducting plate is controlled in the secondary heat conducting plate to increase the heat exchange time, so that the temperature of cooling liquid flowing back into the water cooling machine is reduced, and the cooling efficiency is improved.
2. According to the sheet metal laser cutting equipment and the sheet metal laser cutting method based on cooling of the cutting part, when the closed valve is closed, the expansion part expands to increase the volume so that more liquid enters, and therefore the influence on the water pump in the water cooling machine is reduced; and the expansion of the expansion piece can be close to the nozzle of the cutting head, so that the temperature of the nozzle of the cutting head is reduced during expansion, and the service life of the nozzle is prolonged.
3. According to the metal plate laser cutting equipment and method based on cooling of the cutting part, when high-pressure gas is sprayed out, the cutting head pushes the induction plate away to realize continuous flow of the gas, so that surrounding gas is attracted and rushes to the filter screen cover along with raw gas, dust in the air is intercepted by the filter screen cover, the content of the dust in the air is reduced, and the quality of the air is improved.
4. In this panel beating laser cutting equipment and method based on cutting position cooling, when the expansion member inflation, the expansion member drives the push rod and is located the promotion flange, forces the installation pole to produce deformation, and when the push rod continuously expands, the position of push rod also can produce the skew and break away from the flange, and the installation pole that forms at this moment resets and drives the screen panel and rock, makes the screen panel shake the dust of interception and falls to realize the quick clearance to the dust.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic diagram of a driving member according to the present invention;
FIG. 3 is a schematic view of the structure of the cutting head of the present invention;
FIG. 4 is a schematic view of a cooling portion according to the present invention;
FIG. 5 is a schematic view of the structure of the secondary heat-conducting plate of the present invention;
FIG. 6 is a schematic cross-sectional view of a liquid inlet pipe according to the present invention;
FIG. 7 is a schematic view of a baffle according to the present invention;
FIG. 8 is an enlarged schematic view of the structure of the sensing plate at B of FIG. 7 in accordance with the present invention;
FIG. 9 is a schematic view of a cam lever according to the present invention;
FIG. 10 is a schematic view of the structure of the filter screen cover of the present invention;
FIG. 11 is a schematic view of a push rod according to the present invention;
FIG. 12 is a schematic view of an expansion member of the present invention in an expanded state;
FIG. 13 is a schematic view of a connecting ring according to the present invention;
fig. 14 is a schematic view showing a moving state of the heat transfer plate according to the present invention.
The meaning of each reference sign in the figure is:
100. a work table; 101. a driving member; 102. a carrying platform; 103. a sheet metal part; 104. a carrier; 110. a cutting head;
200. a cooling unit; 201. a water cooling machine;
210. a heat conducting plate; 211. a liquid inlet pipe; 212. an expansion member; 213. a communicating pipe; 214. a telescopic rod;
220. a secondary heat conduction plate; 221. a return pipe; 222. a fixing ring; 223. a support arm;
230. a valve seat; 231. a valve body; 232. a drive column; 233. a return spring;
240. a deflector; 241. an opening; 242. an induction plate; 250. a protruding rod;
260. a screen cover; 261. a mounting rod; 262. a push rod; 263. a convex plate; 270. a connecting ring; 271. and (5) balancing weights.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, in the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Referring to fig. 1-3, one of the purposes of the present invention is to provide a sheet metal laser cutting device based on cooling of a cutting portion, which can continuously contact with a workpiece after a workbench 100 ascends, so that the heated liquid has enough time to exchange heat with the workpiece to reduce the temperature of the liquid during backflow.
The cutting equipment comprises a workbench 100 and a cutting head 110, wherein a driving piece 101 and a bearing table 102 for supporting a sheet metal part 103 are arranged in the workbench 100, the cutting head 110 is connected with the driving piece 101 through a bearing piece 104 arranged at the top, so that the driving piece 101 can drive the cutting head 110 to move in a multi-axis direction, and multi-mode cutting of the sheet metal part 103 is achieved.
In addition, the cooling of the water spray requires wiping treatment after collecting the sheet metal part 103, and the sprayed water also easily generates water mist to adhere to the equipment to cause damage to the equipment. However, when the heat transfer plate is used for heat exchange and cooling, the temperature of the cold water is rapidly increased due to the overhigh temperature of laser cutting, so that the phenomenon that the cooling efficiency cannot keep up with the temperature increasing speed is easily caused. To this end:
the cutting device further comprises a cooling part 200 and a water cooler 201, wherein the cooling part 200 comprises a main heat conducting plate 210 positioned behind a cutting path of the cutting head 110 and a secondary heat conducting plate 220 positioned in front of the cutting path of the cutting head 110, cooling liquid discharged by the water cooler 201 flows back into the main heat conducting plate 210 and the secondary heat conducting plate 220 after passing through the main heat conducting plate 210 and the secondary heat conducting plate 220, a closed valve is arranged in the main heat conducting plate 210, and when the cutting head 110 ascends, the closed valve cuts off communication between the main heat conducting plate 210 and the secondary heat conducting plate 220, so that liquid in the secondary heat conducting plate 220 loses power and stays in the secondary heat conducting plate 220 to exchange heat with a workpiece.
That is, the heat transfer plate 210 contacts the cut workpiece to transfer heat, and the heat-transferred liquid is transferred into the sub heat transfer plate 220, and the heat transfer plate 220 contacts the non-cut portion of the workpiece to transfer heat, and the liquid in the sub heat transfer plate 220 is controlled in the sub heat transfer plate 220 to increase the heat transfer time when the cutting head 110 is lifted, so that the temperature of the cooling liquid flowing back into the water cooler 201 is reduced to improve the cooling efficiency.
Fig. 2 to 9 show embodiment 1 of the present invention.
As shown in fig. 3 and 4, the top of the main heat transfer plate 210 and the sub heat transfer plate 220 are respectively connected with a feed pipe 211 and a return pipe 221. Wherein, the liquid inlet pipe 211 is communicated with the liquid outlet end of the water cooler 201, the return pipe 221 is communicated with the liquid inlet end of the water cooler 201, and the main heat conducting plate 210 is communicated with the secondary heat conducting plate 220 through the communicating pipe 213. In this way, the water cooler 201 pumps the liquid into the liquid inlet pipe 211 after cooling, and then flows into the secondary heat conduction plate 220 through the communicating pipe 213, and then flows back into the water cooler 201 through the return pipe 221. The heat conducting plate 210 is located at the rear of the forward direction of the cutting head 110, that is, the heat conducting plate 210 contacts the sheet metal part 103 and is a cut part, and the cooling liquid flows into the heat conducting plate 210 to cool the cut part; the cooling unit 200 is located in front of the cutting head 110 in the forward direction and directly contacts the ice-cooled sheet metal member 103, so that the liquid in the main heat transfer plate 210 flows into the sub heat transfer plate 220 through the communication pipe 213, and then flows back into the water cooler 201 after briefly exchanging heat with the sheet metal member 103 through the sub heat transfer plate 220.
On the other hand, a fixing ring 222 is provided between the main heat conductive plate 210 and the sub heat conductive plate 220, the fixing ring 222 is located at the outer circumference of the cutting head 110, one side of which is fixedly connected with the main heat conductive plate 210, and the other side of which is connected with the sub heat conductive plate 220 through a hinged telescopic rod 214. In fig. 5, the fixing ring 222 is fixed to the bottom of the carrier 104 by the supporting arm 223, so that when the cutting head 110 is lifted, the carrier 104 connected to the cutting head 110 is lifted, and thus the carrier 104 pulls the fixing ring 222 to lift by the supporting arm 223. At this time, since the relationship between the heat conducting plate 210 and the fixing ring 222 is a fixed connection, the heat conducting plate 210 moves up along with the fixing ring 222; while the secondary heat conductive plate 220 will remain on top of the sheet metal part 103 due to the extension of the telescopic rod 214.
Then, the pumped liquid is shut off by the action of the sealing valve, and the liquid in the secondary heat conducting plate 220 does not flow continuously, but exchanges heat with the sheet metal part 103 through the secondary heat conducting plate 220. Thus increasing the efficiency of heat exchange.
It should be noted that, since the position and distance between the main heat conductive plate 210 and the sub heat conductive plate 220 are changed when the cutting head 110 is lifted, the communicating tube 213 is preferably a flexible hose; cavities for liquid to enter are formed in the heat conducting plate 210 and the cooling part 200.
Fig. 6 shows a specific structure of the airtight valve. As can be seen from the figure, the airtight valve comprises a valve seat 230 located in the liquid inlet pipe 211, a plurality of small holes for water to pass through are formed on the surface of the valve seat 230, a valve body 231 is slidably arranged on the top of the valve seat 230, and a plurality of small holes for water to pass through are also formed on the surface of the valve body 231. In a normal state, the valve seat 230 is communicated with the small holes on the surface of the valve seat 230, and water flows normally, but when the cutting head 110 ascends, the valve body 231 needs to move to enable the small holes between the valve seat and the small holes to be misplaced, so that liquid in the liquid inlet pipe 211 is stopped. Therefore, one end of the valve body 231 protrudes outwards to form a driving column 232, the driving column 232 penetrates through the liquid inlet pipe 211 in a sliding manner, a reset spring 233 is arranged between the penetrating end and the side wall of the liquid inlet pipe 211, and the reset spring 233 is used for pulling the valve body 231 to be misplaced with the valve seat 230, so that liquid in the liquid inlet pipe 211 is stopped. And one end of the driving post 232 is provided with a driving device for pushing the valve body 231 to move when the cutting head 110 is operated.
As a first embodiment of the driving device of the present invention, as shown in fig. 7 and 8, the driving device is two guide plates 240, and the two guide plates 240 are respectively disposed at the ends of the two main heat conductive plates 210 and the sub heat conductive plate 220 for forming a wind collecting cavity at the outer circumference of the cutting head 110. In addition, an opening 241 is formed on the side wall of the deflector 240 located at the top of the main heat conducting plate 210, a sensing plate 242 is slidably arranged in the opening 241, and the side wall of the sensing plate 242 is fixedly connected with the driving post 232. Thus, when the cutting head 110 is operated, the high pressure gas generated at the nozzle of the cutting head 110 is diffused to the outer circumference, and the deflector 240 blocks part of the gas, so that part of the gas is blown toward the sensing plate 242 to force the sensing plate 242 to move toward the driving post 232 to push the driving post 232. The movement of the driving post 232 causes the compression of the return spring 233 and the displacement of the valve body 231, and the valve body 231 is communicated with the valve seat 230 after the displacement, and at this time, the liquid in the liquid inlet pipe 211 flows into the main heat conducting plate 210. Conversely, when the cutting head 110 moves upward, it means that the cutting head 110 is not in an operating state, and the nozzles of the cutting head 110 do not blow high-pressure gas. Therefore, the return spring 233 drives the valve body 231 to return, so that the valve body 231 and the valve body 231 are dislocated to realize closure, and the interception of the liquid in the liquid inlet pipe 211 is completed.
As another embodiment of the driving device of the present invention, as shown in fig. 9, the driving device is a protruding rod 250, the protruding rod 250 longitudinally penetrates the heat conduction plate 210 and is slidably connected with the heat conduction plate 210, and the top of the protruding rod 250 is inclined to the transmission post 232 to form an inclined plane. Thus, when the cutting head 110 works, the heat conducting plate 210 is attached to the sheet metal part 103, so that the sheet metal part 103 pushes the protruding rod 250 upwards, and when the protruding rod 250 moves upwards, the driving column 232 is pushed to move through the inclined plane at the top of the protruding rod, and the valve body 231 is enabled to displace to be communicated with the valve seat 230. When the cutting head 110 does not work and moves upwards, the upward movement of the cutting head 110 also drives the main heat conducting plate 210 to move upwards, at this time, the main heat conducting plate 210 is separated from the sheet metal part 103, the convex rod 250 loses the driving force of the sheet metal part 103, and the valve body 231 is reset and is dislocated with the valve body 231 to achieve closing at this time through the elasticity of the reset spring 233, so that the interception of the liquid in the liquid inlet pipe 211 is completed.
In embodiment 2, considering that the liquid in the water cooler 201 is transported by the water pump, if the shut-off time is long, the liquid cannot flow, which also affects the life of the water pump. For this purpose, another embodiment of the liquid inlet tube 211 is disclosed, as shown in connection with fig. 6 and 12.
In this embodiment, the middle part of the liquid inlet tube 211 is provided with an expansion member 212, and the expansion member 212 is preferably made of rubber. The expansion member 212 is located above the containment valve. Thus, when the sealing valve intercepts the liquid, the liquid pressure on the sealing valve in the liquid inlet pipe 211 is increased, and the expansion member 212 deforms and expands to be close to the nozzle of the cutting head 110 (a in fig. 12 is the distance between the cutting head 110 and the expansion member 212 before expansion, and b is the distance after expansion), so that the gas temperature at the nozzle of the cutting head 110 is reduced to the temperature at the nozzle of the cutting head 110.
In this way, when the sealing valve is closed, the expansion piece 212 expands to increase the volume to enable more liquid to enter, so that the influence on the water pump in the water cooler 201 is reduced; and, the expansion of the expansion member 212 can be close to the nozzle of the cutting head 110 to reduce the temperature of the nozzle of the cutting head 110 during expansion and improve the service life of the nozzle.
Example 3 to reduce the amount of dust generated by cutting floating in the air, the quality of the surrounding air was improved. This embodiment discloses another implementation of the sensing plate 242, please refer to fig. 10 in combination with the above embodiment:
in this embodiment, a filter screen cover 260 is disposed between the baffle 240 and the liquid inlet pipe 211, the filter screen cover 260 is fixed on the side wall of the baffle 240 by a mounting rod 261 disposed on the side wall, and the filter screen cover 260 is located on one side of the opening 241. When the high-pressure gas jet from the nozzle of the cutting head 110 drives dust to flow together, when the gas pushes the sensing plate 242 to leave the opening 241, the gas is filtered by the filter screen 260 and discharged, and in the process of high-speed flowing of the gas, a low-pressure area is formed in the area near the opening 241, so that the gas in other places is sucked to the opening 241 and then is flushed towards the filter screen 260 along with the raw gas, so that the filter screen 260 intercepts the dust in the air, and the content of the dust in the air is reduced.
Therefore, when the high-pressure gas is sprayed out, the cutting head 110 pushes the sensing plate 242 away to realize the continuous flow of the gas, so that the surrounding gas is attracted and then rushes towards the filter screen cover 260 along with the raw gas, and the filter screen cover 260 intercepts dust in the air, thereby reducing the content of the dust in the air and improving the quality of the air.
Example 4, which is performed on the basis of example 3, is mainly to further optimize the screen cover 260, as shown in fig. 11:
the mounting bar 261 is made of an elastic material such as rubber, iron sheet, etc. And, the top of the screen cover 260 is fixedly connected with a convex plate 263, and the side wall of the expansion member 212 is fixedly connected with a push rod 262. Thus, when the expansion member 212 expands, the expansion member 212 drives the push rod 262 to push the convex plate 263, forcing the mounting rod 261 to deform, when the push rod 262 continuously expands, the position of the push rod 262 also deviates to be separated from the convex plate 263, and the mounting rod 261 formed at this time resets and drives the filter screen cover 260 to shake, so that the filter screen cover 260 shakes off the intercepted dust, thereby realizing rapid cleaning of the dust.
Embodiment 5, please refer to fig. 13 and 14 in combination with the above, in order to keep the secondary heat-conducting plate 220 in front of the cutting path all the time during the cutting process, wherein:
the bottom end of the supporting arm 223 is fixedly connected with a connecting ring 270, the bottom of the connecting ring 270 is rotatably connected with the top of the fixed ring 222, and one end of the main heat conducting plate 210 is provided with a balancing weight 271.
Next, the directions of arrow d and arrow c are exemplified.
When the cutting head 110 moves in the direction of arrow d, the main heat transfer plate 210 does not rotate, that is, the angle between the main heat transfer plate 210 and the sub heat transfer plate 220 remains unchanged, because the weight 271 is already located behind the cutting head 110;
when the cutting head 110 moves in the direction of arrow c, the main heat conducting plate 210 will rotate in the direction of arrow e due to the change of the moving direction of the cutting head 110 and the influence of the weight of the balancing weight 271, and the main heat conducting plate 210 will rotate to drive the secondary heat conducting plate 220 to rotate through the fixing ring 222, so that the position adjustment of the main heat conducting plate 210 and the secondary heat conducting plate 220 is realized, and the cutting device is convenient for adapting to the cutting of different shapes.
Moreover, the supporting arm 223 may be a telescopic structure, and a spring is disposed inside the supporting arm, so that when the distance between the cutting head 110 and the sheet metal part 103 is far or near, the main heat conducting plate 210 and the secondary heat conducting plate 220 can be always attached to the sheet metal part 103, and the distance between the cutting head 110 and the carrying table 102 is not affected.
The second object of the invention is to provide a method for a sheet metal laser cutting device based on cutting part cooling, comprising the following method steps:
s1, driving piece 101 drives cutting head 110 to move in multiple axial directions, and sheet metal part 103 is cut;
s2, the cooling liquid discharged by the water cooler 201 flows back into the main heat conducting plate 210 and the secondary heat conducting plate 220;
and S3, when the cutting head 110 ascends, the closed valve cuts off the communication between the main heat conducting plate 210 and the secondary heat conducting plate 220, so that the liquid in the secondary heat conducting plate 220 loses power and stays in the secondary heat conducting plate 220 to exchange heat with the workpiece.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. Sheet metal laser cutting equipment based on cutting position cooling, including workstation (100) and cutting head (110), be provided with in workstation (100) and be used for driving piece (101) that cutting head (110) removed, cutting head (110) are connected its characterized in that with driving piece (101) through carrier (104) of top installation: the cutting apparatus further comprises a cooling section (200) and a water cooler (201), wherein:
the cooling part (200) comprises a main heat conducting plate (210) positioned behind the cutting path of the cutting head (110) and a secondary heat conducting plate (220) positioned in front of the cutting path of the cutting head (110);
the cooling liquid discharged by the water cooler (201) flows back into the main heat conducting plate (210) and the secondary heat conducting plate (220); a closed valve is arranged in the main heat conducting plate (210), and when the cutting head (110) ascends, the closed valve cuts off the communication between the main heat conducting plate (210) and the secondary heat conducting plate (220) so that the liquid in the secondary heat conducting plate (220) loses power and stays in the secondary heat conducting plate (220) to exchange heat with a workpiece;
the tops of the main heat conducting plate (210) and the secondary heat conducting plate (220) are respectively communicated with a liquid inlet pipe (211) and a return pipe (221), the main heat conducting plate (210) and the secondary heat conducting plate (220) are communicated through a communicating pipe (213), so that the water cooler (201) pumps liquid into the liquid inlet pipe (211) after refrigerating, and then flows into the secondary heat conducting plate (220) through the communicating pipe (213) and then flows back into the water cooler (201) through the return pipe (221);
a fixed ring (222) is arranged between the main heat conducting plate (210) and the secondary heat conducting plate (220), the fixed ring (222) is fixed at the bottom of the bearing piece (104) through a supporting arm (223), one side of the fixed ring (222) is fixedly connected with the main heat conducting plate (210), and the other side of the fixed ring is connected with the secondary heat conducting plate (220) through a hinged telescopic rod (214);
the airtight valve comprises a valve seat (230) positioned in the liquid inlet pipe (211), a valve body (231) is slidably arranged at the top of the valve seat (230), and a plurality of small holes for water to pass through are formed in the surfaces of the valve body (231) and the valve seat (230); one end of the valve body (231) protrudes outwards to form a transmission column (232) penetrating through the liquid inlet pipe (211) in a sliding mode, a reset spring (233) used for pulling the valve body (231) to be misplaced with the valve seat (230) is arranged between one end of the transmission column (232) and the side wall of the liquid inlet pipe (211), and a driving device used for pushing the valve body (231) to move when the cutting head (110) works is further arranged at one end of the transmission column (232).
2. The sheet metal laser cutting device based on cutting part cooling of claim 1, wherein: the driving device is provided with two guide plates (240) which are respectively arranged at the ends of the main heat conducting plate (210) and the secondary heat conducting plate (220), and the two guide plates (240) form a wind gathering cavity at the periphery of the cutting head (110); an opening (241) is formed in the side wall of the guide plate (240) located at the top of the main heat conducting plate (210), a sensing plate (242) fixedly connected with the transmission column (232) is slidably arranged in the opening (241), and the sensing plate (242) is used for pushing the transmission column (232) to move according to high-pressure gas generated at the nozzle of the cutting head (110).
3. The sheet metal laser cutting device based on cutting part cooling of claim 1, wherein: the driving device is a protruding rod (250), the protruding rod (250) longitudinally penetrates through the main heat conducting plate (210) and is in sliding connection with the main heat conducting plate (210), and an inclined plane for pushing the transmission column (232) to move is formed at the top of the protruding rod (250).
4. The sheet metal laser cutting device based on cutting part cooling of claim 1, wherein: an expansion piece (212) is arranged at the middle part of the liquid inlet pipe (211), and the expansion piece (212) is positioned above the airtight valve.
5. The sheet metal laser cutting device based on cutting part cooling of claim 2, wherein: be provided with filter screen cover (260) between guide plate (240) and feed liquor pipe (211), filter screen cover (260) are fixed at guide plate (240) lateral wall through installation pole (261) that its lateral wall set up, filter screen cover (260) are located one side of opening (241), filter screen cover (260) are used for the dust interception in the air.
6. The sheet metal laser cutting device based on cutting part cooling of claim 5, wherein: the installation rod (261) is made of elastic materials, a convex plate (263) is fixedly connected to the top of the filter screen cover (260), and a push rod (262) pushing the convex plate (263) during expansion is fixedly connected to the side wall of the expansion piece (212).
7. The sheet metal laser cutting device based on cutting part cooling of claim 1, wherein: the bottom fixedly connected with go-between (270) of support arm (223), the bottom of go-between (270) is rotated with the top of solid fixed ring (222) and is connected, the one end of leading hot plate (210) is provided with balancing weight (271).
8. A method for the sheet metal laser cutting device based on cutting site cooling of claim 1, characterized by: the method comprises the following steps:
s1, a driving piece (101) drives a cutting head (110) to move in a multi-axis direction, and a sheet metal part (103) is cut;
s2, cooling liquid discharged by the water cooler (201) flows back into the main heat conducting plate (210) and the secondary heat conducting plate (220);
and S3, when the cutting head (110) ascends, the closed valve cuts off the communication between the main heat conducting plate (210) and the secondary heat conducting plate (220), so that the liquid in the secondary heat conducting plate (220) loses power and stays in the secondary heat conducting plate (220) to exchange heat with the workpiece.
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| CN202310527311.2A CN116551208B (en) | 2023-05-11 | 2023-05-11 | Metal plate laser cutting equipment and method based on cooling of cutting part |
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| CN116551208A (en) | 2023-08-08 |
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