CN114147376A - Laser welding weldment fixing device with infrared ranging - Google Patents
Laser welding weldment fixing device with infrared ranging Download PDFInfo
- Publication number
- CN114147376A CN114147376A CN202111514845.9A CN202111514845A CN114147376A CN 114147376 A CN114147376 A CN 114147376A CN 202111514845 A CN202111514845 A CN 202111514845A CN 114147376 A CN114147376 A CN 114147376A
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- China
- Prior art keywords
- weldment
- welding
- baffle plate
- laser
- infrared induction
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Classifications
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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
-
- 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
Abstract
The invention discloses a laser welding weldment fixing device with infrared ranging function, which comprises a laser light source, a baffle plate assembly, an infrared induction emitting device, an infrared induction receiving device, a mechanical gripper, a guide piece, a telescopic guide rod and a control unit, wherein the laser light source is connected with the baffle plate assembly; the baffle plate assembly comprises a first baffle plate and a second baffle plate, the two baffle plates are arranged in parallel in the vertical direction, a groove is arranged at a certain position on the inner sides of the two baffle plates in the horizontal direction of the two baffle plates, and the guide piece is arranged in the groove; the control unit is a control system and a control box, one end of the control box can slide along a guide piece in the groove of the first baffle, the other end of the control box is connected with a welding piece, an infrared induction emitting device is arranged on the side surface of the control box, and an infrared induction receiving device is arranged in the horizontal induction distance of the infrared induction emitting device; the mechanical gripper grabs the weldment to turn the weldment over, and one end of the mechanical gripper, which is far away from the weldment, is in sliding connection with the guide piece of the second baffle plate through a telescopic guide rod; the laser light source is fixed above the welding part.
Description
The technical field is as follows:
the invention relates to the technical field of a device for welding weldments by laser, in particular to a fixing device for the welding weldments by the laser with infrared distance measurement
Background art:
in the prior art, laser welding is an efficient and precise welding method using a laser beam with high energy density as a heat source. Laser welding is one of the important methods for the application of laser material processing techniques.
In the 70 s of the 20 th century, the laser welding device is mainly used for welding thin-wall materials and low-speed welding, and the welding process belongs to a heat conduction type, namely, the surface of a workpiece is heated by laser radiation, surface heat is diffused inwards through heat conduction, the workpiece is melted by controlling parameters such as the width, energy, peak power and repetition frequency of laser pulse, and a specific molten pool is formed. Due to the unique advantages, the welding method is successfully applied to the precise welding of micro and small parts.
Although laser welding weldments have good mechanical properties and low structural distortion, the position of the weldments during laser welding is very precise, and it is necessary to maintain the weldments within a reasonable range of the focus of the laser beam, otherwise the weldments may be subjected to uneven heating during laser welding, which may degrade the weld performance.
Meanwhile, in the laser welding process, because energy impact is large, a fixed clamping device is needed to be used for a weldment, and the final position of the weldment is ensured to be consistent with a welding spot to be impacted by a laser beam.
In the existing laser welding process, a weldment is usually fixed and is welded by moving a laser beam, and defocusing amount needs to be measured and calculated before each welding. After welding is completed each time, the welding effect can be checked only after the weldment is released from fixation. However, due to the movement of the laser beam, the welding distance cannot be accurately determined in the welding process, and due to the movement of the laser beam, deviation is easily generated in laser energy output, so that the welding effect is poor;
secondly, need remove fixing device after welding at every turn so that look over weldment welding effect, also very big reduction welding efficiency like this.
At present, researchers improve a fixing device, for example, as disclosed in (patent number: CN206732433U) patent publication, the size of the fixing device is adjusted by installing a walking device and a rocker, so as to achieve a laser welding fixing tool capable of meeting the welding positioning requirements of modules with different thicknesses, and the laser fixing tool cannot realize automatic measurement of defocusing amount and welding distance in the laser welding process.
The invention content is as follows:
the invention aims to solve the problems that the welding distance cannot be accurately determined in the laser welding process, the defocusing amount needs to be manually measured before each welding and the welding piece cannot be monitored in real time in the prior art, solve the technical problems that the welding distance cannot be accurately determined and the defocusing amount needs to be manually measured before each welding caused in the fixing of the laser welding piece, and simultaneously solve the problems that the welding process cannot be monitored in real time and the welding effect cannot be evaluated, and provide the accurate, simple and efficient welding piece fixing device.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a laser welding weldment fixing device with infrared range finding which characterized in that: the device comprises a laser light source, a baffle plate assembly, an infrared induction emitting device, an infrared induction receiving device, a mechanical gripper, a guide piece, a telescopic guide rod and a control unit; wherein the content of the first and second substances,
the baffle plate assembly is divided into a first baffle plate and a second baffle plate, the two baffle plates are arranged in parallel in the vertical direction, a groove is arranged at a certain position on the inner sides of the two baffle plates in the horizontal direction of the two baffle plates, and the guide piece is arranged in the groove;
the control unit comprises a control system and a control box, one end of the control box can slide along a guide piece in the groove of the first baffle, the other end of the control box is connected with a welding piece, one side surface of the control box is provided with an infrared induction emitting device, and an infrared induction receiving device is arranged in the horizontal induction distance of the infrared induction emitting device;
the mechanical gripper grabs the weldment and can turn the weldment over, and one end of the mechanical gripper, which is far away from the weldment, is in sliding connection with the guide piece of the second baffle plate through the telescopic guide rod;
the laser light source is fixedly arranged above the weldment.
In one embodiment, the laser welding device further comprises a camera, and the control system monitors the welding condition of the weldment shot by the camera and observes and analyzes the blowholes and the arc splashing condition generated in the laser welding process.
In one embodiment, the device further comprises a bottom plate, and the bottom plate is arranged at the bottom of the first baffle plate and the second baffle plate.
In one embodiment, the upper end surface of the mechanical gripper is set to be a defocusing surface, and the control box sends a command to enable the mechanical gripper to move up and down so as to adjust the defocusing amount.
In one embodiment, the telescopic guide rod is fixedly connected with the mechanical hand grip through a rotating shaft.
In one embodiment, the telescopic guide rod can be adjusted in length in a self-adaptive mode according to the length of the weldment.
In one embodiment, in an initial state of welding, an upper end surface of the mechanical gripper is flush with a welding plane of the weldment.
In an embodiment, the ir receiving device can receive the ir signal from the ir emitting device, and the control system calculates the distance difference between the ir signal and the ir signal, so as to obtain the moving distance of the weldment, which is the welding length of the weldment, i.e. the length of the weld seam.
In one embodiment, the infrared sensing receiving device and the control system and the camera and the control system are connected through wires.
In one embodiment, the guide is a slide guide.
Compared with the prior art, the invention has the main beneficial effects that:
the fixing device provided by the invention can realize accurate measurement of the welding distance, can automatically measure the defocusing amount of laser welding, can monitor the laser welding process in real time, and can efficiently judge the welding effect.
The welding process is automatic and simple, the weldment does not need to be repeatedly assembled and disassembled, and the welding device is suitable for welding weldments with different thicknesses and shapes.
The problem of fixed clamping of the laser welding weldment with high efficiency and simplicity can be realized.
Description of the drawings:
FIG. 1 is a schematic perspective view of a laser welding part fixing device with infrared distance measurement according to an embodiment of the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a left side view of FIG. 1;
fig. 4 is a top view of fig. 1.
In the illustration:
1-a laser light source, wherein,
2-a first baffle plate and a second baffle plate,
3-a guide member for guiding the movement of the movable part,
4-an infrared induction emitting device which is arranged on the upper part of the main body,
5-an infrared induction receiving device, wherein,
6-a conducting wire, wherein the conducting wire is arranged on the conducting wire,
7-a camera, wherein the camera is arranged on the camera,
8-a conducting wire, wherein the conducting wire is connected with the conducting wire,
9-controlling the system to be controlled,
10-a telescopic guide rod, which is provided with a telescopic guide rod,
11-a mechanical hand-grip, which,
12-the part to be welded,
13-controlling the operation of the box,
21-a second baffle-plate, which is,
22-bottom plate.
The specific implementation mode is as follows:
the following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to these embodiments. On the contrary, the invention is described in connection with the embodiments for the purpose of covering alternatives or modifications that may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Moreover, some of the specific details have been left out of the description in order to avoid obscuring or obscuring the focus of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements indicated must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the present invention.
The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present embodiment, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected," and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present embodiment can be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 in conjunction with fig. 2-fig. 1, a laser weld weldment fixture with infrared ranging in one embodiment of fig. 1 is characterized by: the device comprises a laser light source 1, a baffle plate assembly, an infrared induction emitting device 4, an infrared induction receiving device 5, a mechanical gripper 11, a guide piece 3, a telescopic guide rod 10 and a control unit; wherein the content of the first and second substances,
the baffle plate assembly is divided into a first baffle plate 2 and a second baffle plate 21, the two baffle plates are arranged in parallel in the vertical direction, a groove is arranged at a certain position on the inner sides of the two baffle plates along the horizontal direction of the two baffle plates, and the guide piece 3 is arranged in the groove;
the control unit comprises a control system 9 and a control box 13, one end of the control box 13 can slide along a guide piece in a groove of the first baffle 2, the other end of the control box 13 is connected with a welding piece 12, an infrared induction emitting device 4 is arranged on one side surface of the control box 13, and an infrared induction receiving device (5) is arranged in the horizontal induction distance of the infrared induction emitting device 4;
the mechanical hand 11 grabs the weldment 12 and can turn over the weldment 12, and one end of the mechanical hand 11, which is far away from the weldment 12, is in sliding connection with the guide piece of the second baffle 21 through the telescopic guide rod 10; the laser light source 1 is fixedly arranged above the weldment 12.
Further, the device also comprises a camera 7, and the control system 9 monitors the welding condition of the weldment 12 shot by the camera 7, observes and analyzes the blowholes and the arc splashing condition generated in the laser welding process.
Further, the device also comprises a bottom plate 22, and the bottom plate 22 is arranged at the bottom of the first baffle plate 2 and the second baffle plate 21.
Further, the upper end surface of the mechanical gripper 11 is set to be an out-of-focus surface, and the control box 13 sends out an instruction to enable the mechanical gripper 11 to move up and down so as to adjust the out-of-focus amount.
Further, the telescopic guide rod 10 is fixedly connected with the mechanical hand grip 11 through a rotating shaft.
Further, the telescopic guide rod 10 can be adjusted in length adaptively according to the length of the weldment 12.
Further, in the initial state of welding, the upper end surface of the mechanical gripper 11 is flush with the welding plane of the weldment 12.
Further, the infrared sensing receiving device 5 can receive the infrared signal sent by the infrared sensing sending device 4, and the control system 9 calculates the distance difference between the two, so as to obtain the moving distance of the weldment, wherein the distance is the welding length of the weldment, i.e. the length of the welding seam.
Further, the infrared induction receiving device 5 and the control system 9 and the camera 7 and the control system 9 are connected through a wire 6 and a wire 8.
Further, the guide 3 is a slide guide rod.
The working process in one embodiment of the invention is as follows:
in the laser welding process, the laser light source is kept fixed, and the whole fixing device is of a symmetrical structure. The baffle plates on two sides of the laser welding fixing device are provided with movable slide rails, a movable control box is mounted on the movable slide rails, one side of the control box is provided with an infrared induction emitting device, the other side of the control box is connected with a telescopic guide rod, and the telescopic guide rod is connected with a manipulator for fixing a weldment through a rotor. The laser light source is fixed, the upper end face of the manipulator is set to be an out-of-focus face, a welding plane of the welding piece is always parallel to the out-of-focus face when the welding piece is fixedly clamped, the manipulator moves up and down by sending an instruction through the control box, and the out-of-focus amount value of each welding can be indirectly obtained.
The starting device, the manipulator fixes the weldment and moves on the slide rail through the control box, the infrared sensing device on the control box sends out a signal, the other infrared device connected with the control system outside the fixing device receives the signal, and the moving distance of the weldment can be accurately obtained by measuring the distance between the two signals. Meanwhile, the high-definition camera is connected with the control system and can shoot a laser welding process in real time and transmit the laser welding process to the control system end for analyzing the welding effect.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. The utility model provides a laser welding weldment fixing device with infrared range finding which characterized in that: the device comprises a laser light source (1), a baffle plate component, an infrared induction emitting device (4), an infrared induction receiving device (5), a mechanical gripper (11), a guide piece (3), a telescopic guide rod (10) and a control unit; wherein the content of the first and second substances,
the baffle plate assembly is divided into a first baffle plate (2) and a second baffle plate (21), the two baffle plates are arranged in parallel in the vertical direction, a groove is formed in one position of the inner sides of the two baffle plates along the horizontal direction of the two baffle plates, and the guide piece (3) is arranged in the groove;
the control unit comprises a control system (9) and a control box (13), one end of the control box (13) can slide along a guide piece in a groove of the first baffle (2), the other end of the control box (13) is connected with a welding piece (12), an infrared induction emitting device (4) is arranged on one side surface of the control box (13), and an infrared induction receiving device (5) is arranged in the horizontal induction distance of the infrared induction emitting device (4);
the mechanical gripper (11) grips the weldment (12) and can turn the weldment (12), and one end of the mechanical gripper (11), which is far away from the weldment (12), is in sliding connection with the guide piece of the second baffle (21) through the telescopic guide rod (10);
the laser light source (1) is fixedly arranged above the weldment (12).
2. The laser weld weldment fixture of claim 1 wherein: the device also comprises a camera (7), and the control system (9) monitors the welding condition of the weldment (12) shot by the camera (7) and observes and analyzes the blowholes and the arc splashing condition generated in the laser welding process.
3. The laser weld weldment fixture of claim 1 wherein: the novel solar water heater further comprises a bottom plate (22), wherein the bottom plate (22) is arranged at the bottom of the first baffle plate (2) and the bottom of the second baffle plate (21).
4. The laser weld weldment fixture of claim 1 wherein: the upper end face of the mechanical gripper (11) is set to be an out-of-focus face, and the control box (13) sends out an instruction to enable the mechanical gripper (11) to move up and down so that the out-of-focus amount can be adjusted.
5. The laser weld weldment fixture of claim 1 wherein: the telescopic guide rod (10) is fixedly connected with the mechanical gripper (11) through a rotating shaft.
6. The laser weld weldment fixture of claim 4 wherein: the telescopic guide rod (10) can be adjusted in length in a self-adaptive mode according to the length of the weldment (12).
7. The laser weld weldment fixture of claim 1 wherein: in the initial state of welding, the upper end surface of the mechanical hand (11) is flush with the welding plane of the weldment (12).
8. The laser weld weldment fixture of claim 1 wherein: the infrared induction receiving device (5) can receive the infrared signals sent by the infrared induction sending device (4), the distance difference between the infrared signals and the infrared signals is calculated through the control system (9), and then the moving distance of the weldment can be obtained, wherein the moving distance is the welding length of the weldment, namely the length of the welding seam.
9. The laser welding weldment fixture as recited in claim 1, characterized by wire connections between the IR sensor receiver (5) and the control system (9) and between the camera (7) and the control system (9).
10. The laser welding weldment fixture as recited in claim 1, characterized in that the guide (3) is a slide guide.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111514845.9A CN114147376A (en) | 2021-12-13 | 2021-12-13 | Laser welding weldment fixing device with infrared ranging |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111514845.9A CN114147376A (en) | 2021-12-13 | 2021-12-13 | Laser welding weldment fixing device with infrared ranging |
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| CN114147376A true CN114147376A (en) | 2022-03-08 |
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| CN112548321A (en) * | 2020-12-04 | 2021-03-26 | 哈尔滨工业大学 | Coaxial monitoring-based vacuum laser welding seam defect identification method |
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2021
- 2021-12-13 CN CN202111514845.9A patent/CN114147376A/en active Pending
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| US5382770A (en) * | 1993-01-14 | 1995-01-17 | Reliant Laser Corporation | Mirror-based laser-processing system with visual tracking and position control of a moving laser spot |
| DE102008062866A1 (en) * | 2008-11-13 | 2010-05-20 | Daimler Ag | Monitoring laser-welded or -soldered seam for quality, welds series of points and takes images to assess heat dissipation from each |
| CN105382410A (en) * | 2015-12-29 | 2016-03-09 | 苏州润昇精密机械有限公司 | Laser welding equipment with automatic trace function |
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