CN210615498U

CN210615498U - Handheld continuous laser welding device

Info

Publication number: CN210615498U
Application number: CN201921565217.1U
Authority: CN
Inventors: 袁俊; 张高源; 蒲亨强
Original assignee: Shenzhen Leading Laser Technology Co ltd
Current assignee: Shenzhen Leading Laser Technology Co ltd
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2020-05-26
Anticipated expiration: 2029-09-19

Abstract

The utility model discloses a handheld continuous laser welding device, include: the device comprises a mounting main body, a focal spot swinging assembly, a focusing protection assembly, a QBH connecting assembly, a welding blowing assembly and a reset switch assembly; the installation main part includes connector and connecting cylinder, the connector with the connecting cylinder is connected, QBH coupling assembling inserts to be connected in the connecting cylinder, the focus protection subassembly is connected the connector principle one side of connecting cylinder, the welding subassembly of blowing is connected on the focus protection subassembly, the focal spot swing subassembly sets up on the connector, and is located QBH coupling assembling with between the focus protection subassembly, the reset switch subassembly sets up the installation main part deviates from one side of focal spot swing subassembly. The utility model discloses technical scheme aims at one kind lightly, simple operation, safe and sway the acceptable welding seam clearance of welding and skew and be the handheld continuous laser welding device that general laser welding required to hang down.

Description

Handheld continuous laser welding device

Technical Field

The utility model relates to a laser welding technical field, in particular to handheld continuous laser welding device.

Background

The welding mode commonly used at present adopts single-point static welding, the light beam path is in a shape of a static forming track line, and the welding seam of a workpiece is too large and is not firm; secondly, the operation safety and the use comfort are realized, the harm of laser to human bodies and working environments is irreversible, the damage of direct laser light to skin and eyes is huge, and a switch is required to trigger multiple protection devices to prevent other people from being injured by misoperation; laser beams working for a long time cannot be completely led out due to the curvature factor of the lens, so that part of laser beam energy is absorbed by part of components of the swinging device, the temperature is continuously increased, and welding is influenced.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is a primary object of the present invention to provide a portable continuous laser welding device that is lightweight, simple to operate, safe, and has acceptable weld gaps and offsets for wobble welding, and that requires low laser welding requirements.

In order to achieve the above object, the utility model provides a handheld continuous laser welding device, include: the device comprises a mounting main body, a focal spot swinging assembly, a focusing protection assembly, a QBH connecting assembly, a welding blowing assembly and a reset switch assembly; the installation main body comprises a connector and a connecting cylinder, the connector is connected with the connecting cylinder, the QBH connecting component is inserted into the connecting cylinder, the focusing protection component is connected to one side of the connecting cylinder based on the connector principle, the welding blowing component is connected to the focusing protection component, the focal spot swinging component is arranged on the connector and is positioned between the QBH connecting component and the focusing protection component, and the reset switch component is arranged on one side of the installation main body, which is far away from the focal spot swinging component; focal spot swing subassembly is including swing connector, a location section of thick bamboo, angle circle, 60 degrees anti-mirror, lens fixed block, brushless DC motor, motor mounting and sealed lid entirely, the swing connector sets up on the connector, a location section of thick bamboo sets up in the swing connector, the lens fixed block with 60 degrees anti-mirror entirely fixed back with the angle circle is from last down placing in the location section of thick bamboo, brushless DC motor passes through the motor mounting is fixed sealed covering, brushless DC motor with the transmission of lens fixed block is connected, sealed lid is established on the swing connector.

Preferably, the focusing protection component comprises an adapter, a lens connecting seat, a laser focusing lens, a series line component, a stainless steel conducting ring, a ceramic ring and a one-way spring thimble which are integrally arranged; the laser focusing lens is embedded in the connector, the lens connecting seat is connected with the connector to fix the laser focusing lens, an elastic space ring, a lens fixing cylinder, a lens positioning ring, a protective lens and a Teflon space ring are sequentially arranged in the lens connecting seat, the adapter is fixedly connected with the lens connecting seat, the ceramic ring is connected with the adapter, and the welding blowing assembly is fixedly connected with the stainless steel conducting ring; the series line assembly passes through the adapter, the lens connecting seat and the mounting body and is connected with the reset switch assembly.

Preferably, the series line assembly comprises a conductive copper sheet, a first insulation column, a bidirectional spring thimble, a conductive lead, a second insulation column and a third insulation column, the first insulation column is arranged on the adapter, the unidirectional spring thimble penetrates through the first insulation column and is abutted against the conductive copper sheet, the second insulation column is arranged in the lens connecting seat, the third insulation column is arranged in the installation main body, one end of the bidirectional spring thimble is abutted against the conductive copper sheet, the other end of the bidirectional spring thimble sequentially penetrates through the first insulation column and the second insulation column to be connected with the conductive lead, the conductive lead is connected with the reset switch assembly, and the reset switch assembly is connected with the laser driving device through the lead.

Preferably, the lower part of the mounting body is provided with a first vent hole, and the adapter and the lens connecting seat are provided with a second vent hole connected with the first vent hole; an air inlet joint connected with the first air vent is arranged below the connecting cylinder, and a sealing plate is arranged between the lens connecting seat and the mounting main body.

Preferably, the installation main part with the inside return circuit of constituteing of water-cooling through-hole of seting up of focus protection subassembly, the connecting cylinder below is provided with water-cooling joint, water-cooling joint be used for with the water-cooling through-hole is connected, water-cooling joint has two, is used for going out water and intaking respectively, forms the water route circulation.

Compared with the prior art, the beneficial effects of the utility model are that: the internal design is flexible, a good interactive control system is adopted, the tolerance range and the welding seam width of a processing part are enlarged, the defect of small light spots is overcome, the welding seam is better formed, and the firmness is higher. The modeling is light, and the holding feeling is comfortable by adopting a body engineering design method; the hand can be easily controlled, the operation is simple and the hand can be easily operated. The light is automatically locked after the workpiece is removed, and the safety is high.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an exploded view of the present invention;

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The present embodiment provides a handheld continuous laser welding device, as shown in fig. 1 and fig. 2, including: the mounting body 100, the focal spot oscillating assembly 200, the focus protection assembly 300, the QBH connection assembly 400, the welding blow assembly 500, and the reset switch assembly 600; the mounting main body 100 comprises a connector 110 and a connecting cylinder 120, the connector 110 is connected with the connecting cylinder 120, a QBH connecting assembly 400 is inserted into the connecting cylinder 120, a focusing protection assembly 300 is connected to one side of the connector 110 principle connecting cylinder 120, a welding blowing assembly 500 is connected to the focusing protection assembly 300, a focal spot swinging assembly 200 is arranged on the connector 110 and is positioned between the QBH connecting assembly 400 and the focusing protection assembly 300, and a reset switch assembly 600 is arranged on one side of the mounting main body 100, which is far away from the focal spot swinging assembly 200; the focal spot swinging assembly 200 comprises a swinging connector 210, a positioning barrel 220, an angle ring 230, a 60-degree full-reflection mirror 240, a lens fixing block 250, a brushless direct current motor 260, a motor fixing member 270 and a sealing cover 280, wherein the swinging connector 210 is arranged on the connecting head 110, the positioning barrel 220 is arranged in the swinging connector 210, the lens fixing block 250 and the 60-degree full-reflection mirror 240 are fixed and then are sequentially arranged in the positioning barrel 220 from top to bottom with the angle ring 230, the brushless direct current motor 260 is fixed on the sealing cover 280 through the motor fixing member 270, the brushless direct current motor 260 is in transmission connection with the lens fixing block 250, and the sealing cover 280 is covered on the swinging connector 210.

The utility model discloses technical scheme internally designed is dexterous, and good mutual control system has enlarged machined part tolerance range and welding seam width through focal spot swing subassembly, has solved the tiny disadvantage of facula, and the welding seam takes shape better, and the firmness is higher. The modeling is light, and the holding feeling is comfortable by adopting a body engineering design method; the hand can be easily controlled, the operation is simple and the hand can be easily operated.

Further, the focus protection assembly 300 includes an adaptor 310, a lens connecting seat 320, a laser focusing mirror 330, a serial line assembly 340, and a stainless steel conductive ring 351, a ceramic ring 352 and a one-way spring thimble 353 integrally disposed; the laser focusing mirror 330 is embedded in the connector 110, the lens connecting seat 320 is connected with the connector 110 to fix the laser focusing mirror 330, an elastic spacing ring 321, a lens fixing cylinder 322, a lens positioning ring 323, a protective lens 324 and a Teflon spacing ring 325 are sequentially arranged in the lens connecting seat 320, the adapter 310 is fixedly connected with the lens connecting seat 320, the ceramic ring 352 is connected with the adapter 310, and the welding blowing assembly 500 is fixedly connected with the stainless steel conducting ring 351; the series wire assembly 340 is connected to the reset switch assembly 600 through the adaptor 310, the lens connecting holder 320 and the mounting body 100.

Further, the serial line assembly 340 includes a conductive copper sheet 341, a first insulating column 342, a bidirectional spring thimble 343, a conductive lead 344, a second insulating column 345 and a third insulating column 346, the first insulating column 342 is disposed on the adaptor 310, the unidirectional spring thimble 353 is disposed on the first insulating column 342 and abuts against the conductive copper sheet 341, the second insulating column 345 is disposed in the lens connecting seat 320, the third insulating column 346 is disposed in the mounting body 100, one end of the bidirectional spring thimble 343 abuts against the conductive copper sheet 341, the other end thereof sequentially passes through the first insulating column 342 and the second insulating column 345 and is connected with the conductive lead 344, the conductive lead 344 is connected with the reset switch assembly 600, and the reset switch assembly 600 is connected with the laser driving device through a lead.

Further, a first vent hole (not shown) is formed at the lower portion of the mounting body 100, and a second vent hole connected to the first vent hole is formed on the adaptor 310 and the lens connecting seat 320; an air inlet joint 700 connected to the first air vent hole is provided below the connecting cylinder 120, and a sealing plate 360 is provided between the lens connecting holder 320 and the mounting body 100.

Further, a loop formed by water-cooling through holes is formed inside the mounting main body 100 and the focusing protection assembly 300, a water-cooling joint 900 is arranged below the connecting cylinder 120, the water-cooling joint 900 is used for being connected with the water-cooling through holes, and the number of the water-cooling joints 900 is two, and the two water-cooling joints are respectively used for water outlet and water inlet to form water path circulation.

In one embodiment of the present invention, the laser focusing mirror 330 is installed inside the left side of the installation body 100, the stainless steel conductive ring 351, the one-way spring thimble 353 and the ceramic ring 352 are integrated (preventing the electrode from conducting), the lens connecting seat 320 is fixed with the installation body 100 by passing the sealing plate 360 through the screw, the first insulating column 342 is placed in the hole of the adaptor 310, the ceramic ring 352 is connected with the adaptor 310, the one-way spring thimble 353 is inserted in the first insulating column 342 and abuts against the conductive copper sheet 341 installed on the inner plane of the adaptor 310; the second insulating column 345 is placed in the lens connecting seat 320, and the two-way spring thimble 343 is inserted into the hole of the second insulating column 345 and fixed; the third insulating column 346 is arranged in a hole at the left side (the side far away from the QBH connection component 400) in the drawing of the installation main body 100, and the conductive lead 344 passes through the installation main body 100 and is connected with the reset switch component in series; the reset switch assembly 600 is arranged below the installation body 100 and connected with the laser drive through a lead wire; an elastic spacing ring 321 (the outer material is plastic, the inner part is a curve steel wire and is used for preventing gas from flowing backwards by using rebound force), a lens positioning ring 323, a protective lens 324 and a Teflon spacing ring 325 are sequentially arranged in the lens fixing cylinder 322, and laser splashed objects generated by welding after the lens fixing cylinder is integrally inserted into the lens connecting seat 320 (fixed by using a ball head jackscrew and convenient to replace) can be effectively blocked by the protective lens 324, so that the laser focusing lens 330 is prevented from being damaged; welding subassembly 500 of blowing includes copper nozzle 510, adjust a section of thick bamboo 520, tight loop 530 and loose joint clamping ring 540, adjust a section of thick bamboo 520 and stainless steel conduction circle 351 threaded connection, but the front and back adjustment welding distance, through tight loop 530 locking location, copper nozzle 510 is installed in adjusting a section of thick bamboo 520 front end (copper nozzle 510 has the multiple welding style of design, be applicable to a plurality of occasions welding, but utilize thread connected mode quick replacement), loose joint clamping ring 540 overlaps ceramic ring 352 and is connected the installation with adapter 310 and accomplish.

The angle ring 230 and the 60-degree total reflection mirror 240 are sequentially placed at the bottom of the positioning cylinder 220, the 60-degree total reflection mirror 240 is fixedly connected with a ball head jackscrew through a lens fixing block 250, and the brushless direct current motor 260, the lens fixing block 250, the motor fixing block 270 and the sealing cover 280 are connected into a whole; the motor fixing piece 270 is integrally placed in the swing connector 210 and fixed by screws in four directions, and the mounting main body 100 and the swing connector 210 are connected into a whole to form an important component of laser angle deviation swing; a collimation focusing lens 430 is arranged in the right rear part (namely the connecting cylinder 120) of the mounting main body 100 in the figure to shape the laser into parallel light, according to the optical divergence angle design, the QBH connecting assembly 400 comprises a QBH connector 410, a collimation adjusting cylinder 420 and a collimation focusing lens 430, and the focal length of the collimation focusing lens 430 is changed through a collimation adjusting cylinder 520420; the QBH connector 410 is connected with a hole (the connecting cylinder 120) in the rear of the installation main body 100, the continuous laser fiber head is inserted into the QBH connector 410 to rotate to lock and fix the hidden buckle, the water-cooling connector 900 and the air inlet connector 700 are both designed below the installation main body 100, the operation of the handheld continuous laser welding device is facilitated, the light beam refraction angle of the installation main body 100 is 120 degrees, the handheld part adopts a body engineering design method, the holding feeling is comfortable, and the fatigue is not prone to occurring.

The technical proposal of the utility model utilizes the metal electrode conduction principle, and the contact surface of the welding workpiece is connected with the reset switch component 600 and the control system to form a loop in series, and the copper nozzle 510 leaves the workpiece to automatically lock the light; the device comprises a stainless steel conducting ring 351, a ceramic ring 352 and a one-way spring ejector pin 353, wherein the device is a key for isolating a conducting part from an insulating part (the ceramic ring 352 is provided with a T-shaped step, and the welding blowing assembly 500 is connected and fixed through a loose joint connecting ring 540 to achieve the purpose of separating insulation), the conducting part is connected with a reset switch assembly 600, the one-way spring ejector pin 353, a conducting copper sheet 341, a two-way spring ejector pin 343 and a conducting lead 344 are connected with the positive input end of a control system, and the negative output end is connected and fixed with a workpiece; the outer surfaces of the electrode conducting parts are all designed with insulating layer Teflon (the Teflon material is polytetrafluoroethylene which has the advantages of high temperature resistance, corrosion resistance, high lubrication, environmental protection, no toxicity and the like); the reset switch, the welding blowing nozzle electrode and the welding workpiece are effectively connected to form a complete loop, otherwise, the laser cannot be triggered.

The fiber head of the continuous laser is inserted into the QBH connector 410 and is buckled for self-locking, included angle divergence (the optical divergence angle is 8 degrees) can be generated when the laser passes through the fiber for emergence, the collimation focusing lens 430 is utilized to shape the light beam into parallel light (the fixed distance of the collimation focusing lens 430 is set to be 50mm, 75mm and 100 mm), and the parallel light passes through the laser focusing lens 330 for focusing; the laser welding focal spot changing device utilizes a driving brushless direct current motor 260 and a 60-degree total reflection lens (an angle ring 230 and a lens fixing block 250 clamp the middle of a 60-degree total reflection lens 240 to form an inclination angle of 0.07 degrees), the optical refraction principle of the lens is realized, the lens is in a light static state in a static state, the lens moves to change the angle and the light can correspondingly change the refraction direction, the larger the inclination angle is, the larger the refraction focal spot is, and vice versa, the lens rotates at a high speed (the speed is 0-10000 r/min, and the speed can be freely adjusted by a potentiometer), so that a fine included angle is formed between the laser and the 60-degree total reflection lens 240, the rotating repeated circulating focal spot is imaged to have a width, the welding focal spot is enlarged in a regular elliptical shape, and the size of the welding focal spot depends on the.

Before welding according to the welding position of the workpiece, inert gas argon is released to evacuate a point to be welded to form a gas isolation area, which is equivalent to a vacuum state. And then, the workpieces are welded together completely by a handheld continuous laser welding focal spot swinging device. It should be noted that the proper energy is required to be adjusted at any time according to the different work pieces, the thickness of the plate and the position of the welding point, so as to avoid the over-high intensity from puncturing the welding point or causing new damage; the coaxial blowing mode is adopted, and compared with the paraxial blowing (the paraxial blowing protection mode has a simple structure and has the limitation that the protection only acts in one direction, and the protection effect on the complex workpiece is not good), the coaxial blowing mode can perform blowing protection on the complex workpiece, and the operation is convenient; the design of the inside below of installation main part 100 has the first air vent of 3mm, and the argon gas links to each other through the first air vent of installation main part 100 and the second air vent that sets up in the focus protection device, and the centre is equipped with elastic spacer 321 (the outside material is inside for the plastics is the curve steel wire, and the effect prevents gas refluence for utilizing bounce) and prevents that gas from piecing together seam department, protection lens 324 junction from leaking, lets the argon gas all cover the work piece and improves the welding efficiency. In the long-time use of handheld continuous laser welding device, can utilize the lens reflection or close the beam mode and reach the focus welding effect because of laser beam, but the lens is because the camber relation, then partial laser energy will be installed main part 100, focal spot swing subassembly 200, focus protection subassembly 300 absorbs, make local temperature too high, influence the welding effect, the cooling system adopts the water-cooling, there is installation main part 100, closing plate 360, the inside intercommunication each other of lens connecting seat 320 parts, it prevents to be provided with the silica gel sealing washer to leak, adopt first inlet tube and second play water pipe to form circulation circuit, external water cooler refrigeration is connected with handheld continuous laser welding focal spot swing device water-cooling joint 900, make each part continuously effective cooling, the reinforcing welding efficiency.

The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A hand-held continuous laser welding device, comprising: the device comprises a mounting main body, a focal spot swinging assembly, a focusing protection assembly, a QBH connecting assembly, a welding blowing assembly and a reset switch assembly; the installation main body comprises a connector and a connecting cylinder, the connector is connected with the connecting cylinder, the QBH connecting component is inserted into the connecting cylinder, the focusing protection component is connected to one side of the connecting cylinder based on the connector principle, the welding blowing component is connected to the focusing protection component, the focal spot swinging component is arranged on the connector and is positioned between the QBH connecting component and the focusing protection component, and the reset switch component is arranged on one side of the installation main body, which is far away from the focal spot swinging component; focal spot swing subassembly is including swing connector, a location section of thick bamboo, angle circle, 60 degrees anti-mirror, lens fixed block, brushless DC motor, motor mounting and sealed lid entirely, the swing connector sets up on the connector, a location section of thick bamboo sets up in the swing connector, the lens fixed block with 60 degrees anti-mirror entirely fixed back with the angle circle is from last down placing in the location section of thick bamboo, brushless DC motor passes through the motor mounting is fixed sealed covering, brushless DC motor with the transmission of lens fixed block is connected, sealed lid is established on the swing connector.

2. The apparatus of claim 1, wherein the focus protection assembly comprises an adapter, a lens holder, a laser focusing lens, a serial line assembly, and an integrally disposed stainless steel conductive ring, a ceramic ring, and a one-way pogo pin; the laser focusing lens is embedded in the connector, the lens connecting seat is connected with the connector to fix the laser focusing lens, an elastic space ring, a lens fixing cylinder, a lens positioning ring, a protective lens and a Teflon space ring are sequentially arranged in the lens connecting seat, the adapter is fixedly connected with the lens connecting seat, the ceramic ring is connected with the adapter, and the welding blowing assembly is fixedly connected with the stainless steel conducting ring; the series line assembly passes through the adapter, the lens connecting seat and the mounting body and is connected with the reset switch assembly.

3. The apparatus according to claim 2, wherein the series line assembly comprises a conductive copper sheet, a first insulating post, a bidirectional pogo pin, a conductive lead, a second insulating post and a third insulating post, the first insulating post is disposed on the adaptor, the unidirectional pogo pin is inserted through the first insulating post and abuts against the conductive copper sheet, the second insulating post is disposed in the lens connecting seat, the third insulating post is disposed in the mounting body, one end of the bidirectional pogo pin abuts against the conductive copper sheet, the other end of the bidirectional pogo pin sequentially penetrates through the first insulating post and the second insulating post to be connected with the conductive lead, the conductive lead is connected with the reset switch assembly, and the reset switch assembly is connected with the laser driving apparatus through the lead.

4. The apparatus according to claim 2, wherein a first vent hole is formed in a lower portion of the mounting body, and a second vent hole connected to the first vent hole is formed in the adapter and the lens holder; an air inlet joint connected with the first air vent is arranged below the connecting cylinder, and a sealing plate is arranged between the lens connecting seat and the mounting main body.

5. The handheld continuous laser welding device as claimed in any one of claims 1 to 4, wherein a loop composed of water-cooling through holes is formed in the mounting body and the focusing protection assembly, two water-cooling joints are arranged below the connecting cylinder and used for being connected with the water-cooling through holes, and the two water-cooling joints are used for water outlet and water inlet respectively to form water path circulation.