CN109014574B - Intelligent laser welding device - Google Patents
Intelligent laser welding device Download PDFInfo
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- CN109014574B CN109014574B CN201810974915.0A CN201810974915A CN109014574B CN 109014574 B CN109014574 B CN 109014574B CN 201810974915 A CN201810974915 A CN 201810974915A CN 109014574 B CN109014574 B CN 109014574B
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
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Abstract
The invention belongs to the technical field of laser welding, and particularly discloses an intelligent laser welding device which comprises a laser head, a vacuum chamber, a workbench unit and a laser transmission unit, wherein a transmission hole is formed in the upper end of the vacuum chamber, the laser transmission unit is installed at the transmission hole of the vacuum chamber, the workbench unit is positioned in the vacuum chamber, a laser beam emitted by the laser head is projected onto the workbench unit through the laser transmission unit to weld a workpiece, a feeding hole is formed in one side of the vacuum chamber, a discharging hole is formed in the other side of the vacuum chamber, a feeding door is arranged at the position of the feeding hole in a sliding sealing mode, and a discharging door is arranged at the. Compared with the prior art, the device greatly reduces the deposition of plasma plume on the laser transmission lens, thereby improving the quality of workpiece laser welding, effectively ensuring the vacuum environment and simplifying the operation and welding operation steps.
Description
Technical Field
The invention belongs to the technical field of laser welding, and particularly discloses an intelligent laser welding device.
Background
Laser welding uses a laser beam as an energy source to impact on a weldment joint so as to achieve the purpose of welding. In recent years, industrial lasers have been developed rapidly, and optical fiber lasers and disk lasers with high power and high beam quality are emerging continuously. The application of laser welding in deep fusion welding of thick plates is concerned, and the application of laser welding in thick plate welding is increasing. Research shows that the penetration of laser welding does not increase linearly with the increase of laser power; when the laser power is increased to a certain extent, the penetration of the laser fusion welding is not increased any more due to the shielding effect of the plasma plume, and the welding process may be terminated. The other research shows that the vacuum laser welding can obviously increase the penetration depth and has the penetration capacity similar to that of the electron beam welding; and the vacuum laser welding does not need ray protection, and the applicability to materials is wider than that of electron beam welding.
The vacuum laser welding device generally uses laser emitted from an industrial laser welding head, and the laser is transmitted into a vacuum chamber through a laser transmission lens to implement a laser welding process. However, in actual production, plasma plume generated by laser welding can be deposited on a laser transmission lens, which seriously affects the transmission of laser and reduces the welding quality; on the other hand, the laser transmission lens has high manufacturing cost and is not suitable for frequent replacement. Meanwhile, the vacuum laser welding device puts the workpiece into the vacuum chamber before welding and takes the workpiece out of the vacuum chamber after welding, which is troublesome to operate and is not beneficial to realizing rapid welding; and because the work piece is put into and taken out of the vacuum chamber, the vacuum environment of the vacuum chamber is changed, other air is mixed, and a better laser welding effect cannot be ensured.
Disclosure of Invention
The invention aims to provide an intelligent laser welding device to solve the problem that plasma plume generated by vacuum laser welding is deposited on a laser transmission lens to cause poor welding quality.
In order to achieve the purpose, the basic scheme of the invention is as follows: the intelligent laser welding device comprises a laser head, a vacuum chamber, a workbench unit and a laser transmission unit, wherein the upper end of the vacuum chamber is provided with a transmission hole, the laser transmission unit is arranged at the transmission hole of the vacuum chamber and is positioned in the vacuum chamber, a laser beam emitted by the laser head is projected onto the workbench unit through the laser transmission unit to weld a workpiece, one side of the vacuum chamber is provided with a feeding hole, the other side of the vacuum chamber is provided with a discharging hole, the feeding hole is provided with a feeding door in a sliding sealing manner, and the discharging hole is provided with a discharging door in a sliding sealing manner;
one end of the vacuum chamber is provided with a feeding chamber communicated with the feeding hole, the other end of the vacuum chamber is provided with a discharging chamber communicated with the discharging hole, and the feeding chamber can extend and compress towards the direction of the feeding hole; the feeding chamber is communicated with a first air pump and an air storage bottle, a first workbench is arranged in the feeding chamber close to the feeding port, and a first stop door is arranged at one end of the feeding chamber far away from the vacuum chamber; a second workbench is arranged in the discharging chamber close to the discharging port, and a second stop door is arranged at one end of the discharging chamber far away from the vacuum chamber;
the vacuum chamber is communicated with a second air pump, the workbench unit comprises a bedplate with the width smaller than that of a workpiece, and a first push plate and a second push plate which are hinged to two sides of the bedplate, the lower end of the first push plate is provided with a first sliding groove along the direction of the bedplate, the upper end of the feeding door is connected in the sliding groove in a sliding manner, and the feeding door can drive the first push plate to extend out of the first workbench through the feeding hole by sliding to open the feeding hole; the lower end of the second push plate is provided with a second sliding chute along the direction of the bedplate, the upper end of the discharge door is connected in the second sliding chute in a sliding manner, and the discharge door can drive the second push plate to extend out of the second workbench through the discharge port by sliding to open the discharge port; the first workbench is higher than the bedplate, and the second workbench is lower than the bedplate;
a first electromagnet is fixed on one side outside the vacuum chamber, a second electromagnet is fixed on the other side outside the vacuum chamber, and the first electromagnet and the second electromagnet are opposite in different stages when being electrified; the laser transmission unit comprises a laser transmission lens and a tank fixed at the position, located at the transmission hole, of the vacuum chamber, the laser transmission lens is embedded in the tank, a cold water pipe is embedded in the lower ring of the tank, and the cold water pipe is communicated with a cold water circulation unit.
The working principle of the basic scheme is as follows: before the device is used, protective gas can be added into the gas storage cylinder, the feed inlet and the discharge outlet are closed, and the vacuum chamber is pumped to a vacuum state by using the second air pump. When the device is used, the first stop gate is opened, a workpiece to be welded is placed on the first workbench, the first stop gate is closed, the first air pump is started to pump the feeding chamber into a vacuum state, and the air storage cylinder is opened to fill the feeding chamber with protective gas so as to protect the workpiece. Then the feeding door that slides downwards makes the feed inlet open, and the feeding door in-process that slides downwards will move down thereupon, because the one end of first push pedal articulates the position on the platen and must not change to the upper end of feeding door slides in first spout, and then makes first push pedal stretch out the feed inlet to first workstation on. To the compression discharge chamber of feed inlet direction, work piece on the first workstation will be by on the propelling movement to first push pedal, because first workstation is higher than the platen, the work piece will be through first push pedal landing to the platen under the action of gravity of work piece, the protective gas of feed chamber also will get into in the vacuum chamber, treat that the work piece gets into behind the vacuum chamber and to slide the feed inlet door upwards, the one end that the feed door slided and drives first push pedal simultaneously in first spout shifts up to push away the work piece completely to the platen.
At the moment, a second air pump can be started to pump air in the vacuum chamber, so that the vacuum chamber becomes a vacuum state, the first electromagnet and the second electromagnet are electrified, and the first electromagnet and the second electromagnet are opposite in different stages when electrified, so that a magnetic field can be generated in the vacuum chamber; and then, the laser of the laser head is projected onto the workpiece on the workbench unit through the laser transmission mirror to complete the welding of the workpiece.
In the process of welding a workpiece, the generated plasma plume can move to the two sides of the vacuum chamber under the action of the magnetic field, so that the plasma plume is adsorbed on the side wall of the vacuum chamber; therefore, plasma plume is prevented from being deposited on the laser transmission lens, and the laser transmission lens is effectively protected from working stably for a long time. After the device is used for a period of time, the side wall of the vacuum chamber can be cleaned, and the deposition of ion plume on the laser transmission lens is further avoided.
When the device is used for welding workpieces, the cold water circulating unit can be started, cold water is continuously introduced into the cold water pipe in a circulating mode, so that the lower end of the box cylinder is cooled, the vicinity of the laser transmission lens is cooled, and the effect that plasma plume generated by laser welding is adsorbed on the laser transmission lens to influence the welding quality of the workpieces is reduced.
After the workpiece is welded, the discharging door slides downwards, the upper end of the discharging door slides in the second sliding chute, and one end of the second push plate, which is far away from the bedplate, is driven to move downwards and extend out of the discharging port to a second workbench; and at the moment, the second shutter is opened, air enters the discharging chamber and the vacuum chamber, and the workpiece slides onto the second workbench along the second push plate under the action of gravity because the second workbench is lower than the bedplate, so that the workpiece subjected to laser welding can be taken out from the second workbench.
The steps are repeated, and the continuous processing of the workpiece can be realized. Because the width of the bedplate is smaller than the width of the workpiece, the first push plate is obliquely arranged under the action of the feeding door, the second push plate is obliquely arranged under the action of the discharging door, and the first push plate and the second push plate are oppositely arranged, so that the workpiece can be guided to the middle position of the bedplate, and the workpiece can be rapidly positioned and processed conveniently.
The beneficial effect of this basic scheme lies in:
1. the device can control and adjust the vacuum environment of the vacuum chamber as required, and adopts protective gas to wrap and protect the workpiece before welding as required, so that the workpiece is good in welding effect, and the rapid welding is convenient to realize.
2. This device cools off laser transmission lens below through the cooling effect, reduces laser transmission lens below and produces more plasma plume because of the laser temperature is higher to reduce plasma plume and adsorb on laser transmission lens, reduce because of the transmission effect of laser transmission lens is not good, influence laser welding's effect.
3. The device disperses and adsorbs the generated plasma plume under the action of the magnetic field, thereby avoiding the plasma plume generated by laser welding from attaching to the laser transmission lens and reducing the quality of the laser welding.
4. In the use of the device, the feeding port and the discharging port of the vacuum chamber are opened, so that the transmission of the workpiece can be realized under the opening effect of the feeding door and the discharging door, the operation of laser welding the workpiece is simplified and intelligentized, and the laser welding effect of the workpiece is further ensured.
Compared with the prior art, the device greatly reduces the deposition of plasma plume on the laser transmission lens, thereby improving the quality of workpiece laser welding, effectively ensuring the vacuum environment and simplifying the operation and welding operation steps.
Further, the upper end of the tank barrel is provided with a fan for exhausting air above the laser transmission lens, the cold water circulation unit comprises a cold water tank, a water pump and a hot water tank, the upper end of the cold water tank is open, the cold water tank is located on one side, away from the laser transmission lens, of the fan, one end of the cold water pipe is communicated with the cold water tank, and the other end of the cold water pipe is communicated with the hot water tank.
When the cold water circulating unit is used, the air pump is started to pump the cold water tank into the cold water pipe, so that the cold water pipe performs a cooling effect on the lower end of the tank body, and cold water can enter the hot water tank to be recovered after cooling the tank cylinder; in the process, the fan can be opened, the air cooled by the cold water tank above the cold water tank is sucked to the laser transmission lens by the fan and is put on the laser transmission lens, the laser transmission lens is further cooled, the laser welding effect of the workpiece is further ensured, and meanwhile, the air flow is formed above the laser transmission lens, so that the dust is prevented from accumulating on the upper surface of the laser transmission lens and the laser welding processing effect of the workpiece is prevented from being influenced.
Furthermore, a baffle plate is arranged on one side of the feeding chamber, which is far away from the vacuum chamber, and a cylinder with a piston rod fixed with the baffle plate is arranged on the vacuum chamber.
Extension and compression of the feeding chamber along the feeding port can be controlled by the air cylinder, when the piston rod is shortened by the control air cylinder, the baffle plate can be pulled by the piston rod, and when the piston rod is extended by the control air cylinder, the baffle plate can be pushed out along the feeding port by the piston rod, so that extension and compression of the feeding chamber can be controlled conveniently.
Furthermore, a push rod facing the first workbench is arranged on the first stop door.
When the feeding chamber is compressed, the first push rod can push the workpiece at the upper end of the first workbench, so that the workpiece can enter the vacuum chamber along the first push plate more conveniently.
Furthermore, a magnetic ring is arranged at the outer edge of the box barrel at the upper end of the vacuum chamber, a protective barrel which is adsorbed by the magnetic ring is arranged in the vacuum chamber, and a transparent protective lens which is used for enabling laser to pass through is arranged at the center of the protective barrel.
The laser beam that the laser head sent passes through laser transmission lens, and the work piece is welded on the workstation unit through transparent protective glass projection in the protective cylinder, and plasma plume cigarette that produces when the protective cylinder and transparent protective lens had kept apart the laser welding work piece completely has further guaranteed the effect of work piece laser welding and the life of laser transmission lens. This device is in the use, if the position of laser needs to be removed, the accessible removes the magnetic ring to remove a protection section of thick bamboo position, make laser and transparent protective glass align, and then guarantee that the laser of laser head reaches the work piece of workstation unit smoothly on.
Furthermore, the first stop gate is hinged to the stop plate, the second stop gate is hinged to the discharge chamber, a first sealing ring for sealing the feeding chamber is arranged on the outer edge of the first stop gate, and a second sealing ring for sealing the feeding chamber is arranged on the outer edge of the second stop gate.
The arrangement of the first stop gate and the second stop gate can facilitate the laser welding operation of the workpiece, and the first sealing ring and the second sealing ring are used for ensuring that the workpiece is pumped to a vacuum environment during processing.
Furthermore, a first clamping groove is formed in the first workbench, a first buckle matched with the clamping groove is arranged on the first push plate, and a first magnetic attraction structure is arranged on the end face, matched with the first buckle, of the first clamping groove; and a second clamping groove is formed in the second workbench, a second hasp matched with the clamping groove is formed in the second push plate, and a second magnetic attraction structure is arranged on the end face, matched with the second hasp, of the second clamping groove.
When the first push plate extends out of the feeding hole to the first workbench under the action of the feeding door, the first hasp and the first clamping groove can be automatically buckled under the action of the first magnetic attraction structure, so that a workpiece can be conveniently pushed into the vacuum chamber; when the second push plate stretches out the discharge gate to the second workstation under the effect of discharge door, under the effect of second magnetism structure of inhaling, second hasp and second draw-in groove will automatic lock to the work piece of being more convenient for is released in the vacuum chamber.
Drawings
FIG. 1 is a schematic diagram of an embodiment of an intelligent laser welding apparatus according to the present invention;
fig. 2 is a longitudinal sectional view of fig. 1 (the first suction pump, the second suction pump, the gas cylinder, the cold water circulating unit are not shown).
Detailed Description
The present invention will be described in further detail below by way of specific embodiments:
reference numerals in the drawings of the specification include: the laser head 10, the vacuum chamber 20, the feed inlet 21, the feed door 22, the discharge port 23, the discharge door 24, the second air pump 25, the first electromagnet 26, the platen 30, the first push plate 31, the first buckle 311, the first slide groove 32, the second push plate 33, the second buckle 331, the second slide groove 34, the transmission hole 40, the tank 41, the laser transmission lens 42, the magnetic ring 43, the protective tank 44, the transparent protective lens 45, the cold water pipe 50, the fan 51, the cold water tank 52, the hot water tank 53, the feed chamber 60, the first workbench 61, the first clamping groove 611, the first shutter 62, the first air pump 63, the air storage bottle 64, the baffle 65, the air cylinder 66, the push rod 67, the discharge chamber 70, the second shutter 71, the second workbench 72, and the second clamping groove 721.
As shown in fig. 1 and 2, the intelligent laser welding device includes a laser head 10, a vacuum chamber 20, a worktable unit and a laser transmission unit, wherein a transmission hole 40 is formed at the upper end of the vacuum chamber 20, the laser transmission unit is installed at the transmission hole 40 of the vacuum chamber 20, the worktable unit is located in the vacuum chamber 20, and a laser beam emitted by the laser head 10 is projected onto the worktable unit through the laser transmission unit to weld a workpiece. The laser head 10 is an industrial laser welding head and is used in connection with an industrial laser, the laser head 10 is fixed above the vacuum chamber 20 by a support to be aligned with the position of the transmission hole 40 and can move in the transmission hole 40, and the industrial laser can be a YAG laser, a YC02 laser, a disc laser and the like.
The left side of the vacuum chamber 20 is provided with a feed inlet 21, the right side of the vacuum chamber 20 is provided with a discharge outlet 23, the feed inlet 21 is provided with a feed door 22 in a sliding sealing manner, and the discharge outlet 23 is provided with a discharge door 24 in a sliding sealing manner. In this embodiment, a feeding gate 22 is vertically and slidably disposed at the feeding port 21 in the vacuum chamber 20, and the lower end of the feeding gate 22 passes through the inner wall of the lower portion of the vacuum chamber 20 and extends out of the vacuum chamber 20, so as to control the sliding of the feeding gate 22 from the outside of the vacuum chamber 20; the vacuum chamber 20 is vertically provided with a discharge door 24 at the discharge port 23 in a sliding manner, and the lower end of the discharge door 24 passes through the inner wall of the lower part of the vacuum chamber 20 and extends out of the vacuum chamber 20, so that the discharge door 24 can be controlled to slide from the outside of the vacuum chamber 20; one side that feed door 22 is close to feed inlet 21, one side that discharge door 24 is close to discharge gate 23 have all set up the rubber packing and have sealed, and when feed door 22 sheltered from feed inlet 21, feed inlet 21 was sealed under the effect of the rubber packing, and when discharge door 24 sheltered from discharge gate 23, discharge gate 23 was sealed under the effect of the rubber packing.
The left end of the vacuum chamber 20 is provided with a feeding chamber 60 communicated with the feeding hole 21, the right end of the vacuum chamber 20 is provided with a discharging chamber 70 communicated with the discharging hole 23, and the feeding chamber 60 can extend and compress towards the direction of the feeding hole 21; the feeding chamber 60 in this embodiment includes a non-retractable portion fixedly connected to the vacuum chamber 20 at the feeding port 21 and a retractable portion connected to the non-retractable portion, and the feeding chamber 60 of the retractable portion is made in a structure similar to a bellows, and the extension and retraction of the feeding chamber 60 are realized by folding and stretching of the bellows. A baffle plate 65 is fixed on the left side of the feeding chamber 60, an air cylinder 66 is fixed on the vacuum chamber 20, a piston rod of the air cylinder 66 faces the baffle plate 65 and is fixed with the baffle plate 65, and the expansion of the feeding chamber 60 can be controlled by controlling the expansion of the piston rod of the air cylinder 66. The inlet chamber 60 is communicated with a first air pump 63 and an air storage cylinder 64, a first workbench 61 is arranged at the position, close to the inlet port 21, on the right side in the inlet chamber 60, a first stop door 62 for closing and opening the inlet chamber 60 is arranged on the baffle 65, and a push rod 67 facing the first workbench 61 is arranged on the first stop door 62. A second worktable 72 is arranged at the left side of the discharging chamber 70 near the discharging port 23, and a second door 71 for closing and opening the discharging chamber 70 is arranged at the right end of the discharging chamber 70. In this embodiment, the lower end of the first shutter 62 is hinged to the baffle 65, the lower end of the second shutter 71 is hinged to the right side of the discharge chamber 70, a first sealing ring for sealing the feeding chamber 60 is arranged on the outer edge of the first shutter 62, a second sealing ring for sealing the feeding chamber 60 is arranged on the outer edge of the second shutter 71, and both the first sealing ring and the second sealing ring are made of rubber materials.
The vacuum chamber 20 is communicated with a second air pump 25, the workbench unit comprises a bedplate 30 with the width smaller than that of a workpiece, a first push plate 31 and a second push plate 33 which are hinged to two sides of the bedplate 30, a first sliding groove 32 is formed in the lower end of the first push plate 31 along the direction of the bedplate 30, the upper end of the feeding door 22 is connected in the first sliding groove 32 in a sliding mode, the feeding door 22 slides downwards to open the feeding hole 21, the upper end of the feeding door 22 can slide in the first sliding groove 32, and the first push plate 31 can be driven to stretch out of the first workbench 61 through the feeding hole 21. The lower end of the second push plate 33 is provided with a second chute 34 along the direction of the platen 30, the upper end of the discharge door 24 is connected in the second chute 34 in a sliding manner, the discharge door 24 slides downwards to open the discharge hole 23, the upper end of the discharge door 24 slides in the second chute 34, and the second push plate 33 can be driven to extend out of the second workbench 72 through the discharge hole 23; the first table 61 is higher than the platen 30 and the second table 72 is lower than the platen 30. A first clamping groove 611 is formed in the first workbench 61, a first buckle 311 matched with the clamping groove is formed in the first push plate 31, and a first magnetic attraction structure is arranged on the end face, matched with the first buckle 311, of the first clamping groove 611; a second clamping groove 721 is arranged on the second workbench 72, a second hasp 331 matched with the clamping groove is arranged on the second push plate 33, and a second magnetic attraction structure is arranged on the end face where the second clamping groove 721 and the second hasp 331 are matched with each other; the first magnetic attraction structure and the second magnetic attraction structure are magnetic powder embedded in related structures.
A first electromagnet 26 is fixed on the front side outside the vacuum chamber 20, a second electromagnet (not shown in the figure) is fixed on the rear side outside the vacuum chamber 20, the first electromagnet 26 and the second electromagnet are opposite in different stages when being electrified, and a switch for simultaneously controlling the electrification of the first electromagnet 26 and the second electromagnet is arranged outside the vacuum chamber 20.
The laser transmission unit comprises a laser transmission lens 42 and a tank 41 fixed at the position of the transmission hole 40 of the vacuum chamber 20, the laser transmission lens 42 is embedded in the tank 41, a cold water pipe 50 is embedded at the lower end of the tank 41 in a circle, and the cold water pipe 50 is communicated with a cold water circulation unit. In this embodiment, the cold water circulation unit includes a cold water tank 52, a water pump (not shown), and a hot water tank 53, wherein one end of the cold water pipe 50 is connected to the cold water tank 52, and the other end of the cold water pipe 50 is connected to the hot water tank 53. In order to lower the temperature of the laser transmission lens 42 from the outside, a fan 51 for drawing air above the laser transmission lens 42 is provided at the upper end of the tank 41, and a cold water tank 52 is provided on the side of the fan 51 away from the transmission lens. A magnetic ring 43 is arranged at the outer edge of the box cylinder 41 at the upper end of the vacuum chamber 20, a handle for moving the magnetic ring 43 is arranged on the magnetic ring 43, a protective cylinder 44 which is adsorbed with the magnetic ring 43 is arranged in the vacuum chamber 20, and a transparent protective lens for allowing laser to pass through is arranged at the center of the protective cylinder 44.
Before a workpiece is welded by the device in a laser mode, protective gas is added into the gas storage cylinder 64, the feed inlet 21 and the discharge outlet 23 are closed, the vacuum chamber 20 is pumped to a vacuum state by the second air suction pump 25, and cold water is added into the cold water tank 52. When the workpieces are welded by laser, the first stop door 62 is opened, the workpieces to be welded are fixed and placed on the first workbench 61, the first stop door 62 is closed, the first air pump 63 is started to pump the feeding chamber 60 into a vacuum state, and then the air storage bottle 64 is opened to enable the feeding chamber 60 to be filled with protective gas so as to protect the workpieces. Then, the feeding door 22 is slid downwards to open the feeding port 21, the feeding door 22 is slid downwards to extend the first pushing plate 31 out of the feeding port 21 to the first workbench 61, and the first buckle 311 is sucked on the first clamping groove 611 under the action of the first magnetic suction structure; at this time, the control cylinder 66 compresses the feeding chamber 60, the push rod 67 will push the workpiece on the first workbench 61 to slide onto the first push plate 31, because the first workbench 61 is higher than the platen 30, the workpiece will slide onto the platen 30 through the first push plate 31 under the action of gravity of the workpiece, the shielding gas of the feeding chamber 60 will also enter the vacuum chamber 20, after the workpiece enters the vacuum chamber 20, the feeding door 22 slides upwards to close the feeding port 21, and the feeding door 22 slides in the first sliding groove 32 to drive one end of the first push plate 31 to move upwards, so as to push the workpiece completely onto the platen 30.
The second air pump 25 can be started to pump air into the vacuum chamber 20, so that the vacuum chamber 20 is in a vacuum state, the first electromagnet 26 and the second electromagnet are electrified, and when the first electromagnet 26 and the second electromagnet are electrified, different stages are opposite, so that a magnetic field can be formed in the vacuum chamber 20. The handle is held to move the magnetic ring 43, so that the laser is aligned with the position of the workpiece to be welded through the laser transmission lens 42 and the transparent protective lens 45, and then the laser of the laser head 10 is projected onto the workpiece on the workbench unit through the laser transmission lens, so that the workpiece is welded.
In the process of welding the workpiece, the generated plasma plume will move to the two sides of the vacuum chamber 20 under the action of the magnetic field, so as to be adsorbed on the side wall of the vacuum chamber 20; the protective cylinder 44 and the transparent protective lens 45 completely isolate plasma plume generated during laser welding of a workpiece, so that deposition of the plasma plume on the laser transmission lens 42 is avoided, and the laser transmission lens 42 is effectively protected from working stably for a long time. After the device is used for a period of time, the side wall of the vacuum chamber 20 can be cleaned.
When the device is used for welding workpieces, the cold water circulating unit and the fan 51 can be started, the water pump can continuously supply cold water to the cold water pipe 50, so that the lower end of the tank cylinder 41 is cooled, the laser transmission lens 42 is cooled nearby, and the phenomenon that plasma plume generated by laser welding is adsorbed on the laser transmission lens 42 to influence the welding quality of the workpieces is reduced. The fan 51 sucks the air cooled by the cold water tank 52 above the cold water tank 52 to the laser transmission lens 42 and further cools the laser transmission lens 42, so that the laser welding effect of the workpiece is further ensured, and meanwhile, airflow is formed above the laser transmission lens 42, so that the dust is prevented from accumulating on the upper surface of the laser transmission lens 42 and affecting the laser welding processing effect of the workpiece.
After the workpiece is welded, the discharging door 24 slides downwards, the discharging door 24 drives one end of the second push plate 33 far away from the platen 30 to move downwards and extend out of the discharging port 23 to the second workbench 72, and the second buckle 331 is sucked on the second clamping groove 721 under the action of the second magnetic suction structure; at this time, the second shutter 71 is opened, air enters the discharge chamber 70 and the vacuum chamber 20, and since the second table 72 is lower than the platen 30, the workpiece slides down the second push plate 33 onto the second table 72 by gravity, and the laser-welded workpiece can be taken out from the second table 72.
The steps are repeated, and the continuous laser welding processing of the workpiece can be realized. In this embodiment, the control of the water pump, the air cylinder, the first electromagnet, the second electromagnet, the fan, the first air pump, the second air pump, and the like can be programmed to realize automatic control, so that the device is used intelligently.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.
Claims (7)
1. The intelligent laser welding device is characterized in that a feeding hole is formed in one side of the vacuum chamber, a discharging hole is formed in the other side of the vacuum chamber, a feeding door is arranged at the position of the feeding hole in a sliding sealing mode, and a discharging door is arranged at the position of the discharging hole in the sliding sealing mode;
one end of the vacuum chamber is provided with a feeding chamber communicated with the feeding hole, the other end of the vacuum chamber is provided with a discharging chamber communicated with the discharging hole, and the feeding chamber can extend and compress towards the direction of the feeding hole; the feeding chamber is communicated with a first air pump and an air storage bottle, a first workbench is arranged in the feeding chamber close to the feeding port, and a first stop door is arranged at one end of the feeding chamber far away from the vacuum chamber; a second workbench is arranged in the discharging chamber close to the discharging port, and a second stop door is arranged at one end of the discharging chamber far away from the vacuum chamber;
the vacuum chamber is communicated with a second air pump, the workbench unit comprises a bedplate with the width smaller than that of a workpiece, and a first push plate and a second push plate which are hinged to two sides of the bedplate, the lower end of the first push plate is provided with a first sliding groove along the direction of the bedplate, the upper end of the feeding door is connected in the sliding groove in a sliding manner, and the feeding door can drive the first push plate to extend out of the first workbench through the feeding hole by sliding to open the feeding hole; the lower end of the second push plate is provided with a second sliding chute along the direction of the bedplate, the upper end of the discharge door is connected in the second sliding chute in a sliding manner, and the discharge door can drive the second push plate to extend out of the second workbench through the discharge port by sliding to open the discharge port; the first workbench is higher than the bedplate, and the second workbench is lower than the bedplate;
a first electromagnet is fixed on one side outside the vacuum chamber, a second electromagnet is fixed on the other side outside the vacuum chamber, and the first electromagnet and the second electromagnet are opposite in different stages when being electrified; the laser transmission unit comprises a laser transmission lens and a tank fixed at the position, located at the transmission hole, of the vacuum chamber, the laser transmission lens is embedded in the tank, a cold water pipe is embedded in the lower ring of the tank, and the cold water pipe is communicated with a cold water circulation unit.
2. The intelligent laser welding device as claimed in claim 1, wherein a fan for drawing air above the laser transmission lens is arranged at the upper end of the tank, the cold water circulation unit comprises a cold water tank, a water pump and a hot water tank, the upper end of the cold water tank is open, the cold water tank is arranged at one side of the fan far away from the laser transmission lens, one end of the cold water pipe is communicated with the cold water tank, and the other end of the cold water pipe is communicated with the hot water tank.
3. The intelligent laser welding device as claimed in claim 1, wherein a baffle is provided on a side of the feeding chamber away from the vacuum chamber, and a cylinder having a piston rod fixed to the baffle is provided on the vacuum chamber.
4. The intelligent laser welding apparatus of claim 1, wherein the first shutter is provided with a push rod facing the first table.
5. The intelligent laser welding device as claimed in any one of claims 1 to 4, wherein a magnetic ring is disposed at the upper end of the vacuum chamber at the outer edge of the box barrel, a protective barrel attached to the magnetic ring is disposed in the vacuum chamber, and a transparent protective lens for allowing the laser to pass through is disposed at the center of the protective barrel.
6. The intelligent laser welding device as recited in claim 5, wherein the first shutter is hinged to the baffle plate, the second shutter is hinged to the discharge chamber, a first sealing ring for sealing the feed chamber is disposed on an outer edge of the first shutter, and a second sealing ring for sealing the feed chamber is disposed on an outer edge of the second shutter.
7. The intelligent laser welding device as claimed in claim 6, wherein a first clamping groove is formed on the first workbench, a first hasp matched with the clamping groove is formed on the first push plate, and a first magnetic attraction structure is formed on the end face of the first clamping groove matched with the first hasp; and a second clamping groove is formed in the second workbench, a second hasp matched with the clamping groove is formed in the second push plate, and a second magnetic attraction structure is arranged on the end face, matched with the second hasp, of the second clamping groove.
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| CN201810974915.0A CN109014574B (en) | 2018-08-24 | 2018-08-24 | Intelligent laser welding device |
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| CN109014574B true CN109014574B (en) | 2020-03-24 |
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| JPH0768397A (en) * | 1993-08-31 | 1995-03-14 | Mitsubishi Heavy Ind Ltd | Method for decompression laser beam machining |
| CN1833807A (en) * | 2006-01-13 | 2006-09-20 | 熊成锐 | Plasma controlled by alternating magnetic field and dispersed in laser welding |
| CN102513702A (en) * | 2012-01-05 | 2012-06-27 | 哈尔滨工业大学 | Vacuum laser welding equipment and method |
| CN105290613B (en) * | 2015-10-30 | 2017-05-17 | 武汉钢铁(集团)公司 | Vacuum welding device and method for preventing laser seam from generating pores |
| CN105252143B (en) * | 2015-11-23 | 2017-09-29 | 哈尔滨工业大学 | A kind of powerful vacuum laser soldering device |
| CN105710533B (en) * | 2016-04-19 | 2017-06-06 | 哈尔滨工业大学 | Screen work vacuum laser welding system |
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Application publication date: 20181218 Assignee: INSTITUTE OF LASER AND OPTOELECTRONICS INTELLIGENT MANUFACTURING, WENZHOU University Assignor: Wenzhou University Contract record no.: X2020330000103 Denomination of invention: Intelligent laser welding device Granted publication date: 20200324 License type: Common License Record date: 20201125 |
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Application publication date: 20181218 Assignee: Wenzhou tianqin Laser Technology Co.,Ltd. Assignor: Wenzhou University Contract record no.: X2021330000837 Denomination of invention: Intelligent laser welding device Granted publication date: 20200324 License type: Common License Record date: 20211225 |
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