CN104309113A - Hydraulic laser transmission connection clamping apparatus - Google Patents
Hydraulic laser transmission connection clamping apparatus Download PDFInfo
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- CN104309113A CN104309113A CN201410495727.1A CN201410495727A CN104309113A CN 104309113 A CN104309113 A CN 104309113A CN 201410495727 A CN201410495727 A CN 201410495727A CN 104309113 A CN104309113 A CN 104309113A
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Abstract
A hydraulic laser transmission connection clamping apparatus used between thermoplastic plastics or between the thermoplastic plastics and a metal material comprises a PC machine, a lower die, a PLC controller, a hydraulic pressure sensor and a light source control mechanism, and also comprises a hydraulic control system, and the hydraulic control system includes the following three subsystems: a pressurizing mechanism, a pressure reducing mechanism and a pressure release mechanism (protection mechanism); and the PC machine generates water with a certain pressure through the hydraulic control system and uses the water with a certain pressure to clamp workpieces, and a laser head welds the workpieces under the control of the PC machine. The hydraulic laser transmission connection clamping apparatus of the thermoplastics can realize the welding of workpieces with arbitrary curved surfaces, and also can accurately control the welding path and the pressing force, so the overall strength and the rigidity of welded pieces are improved; and hydraulic compaction is adopted, so the compacting force is uniformly distributed on the surface, stress concentration after processing is avoided, and the quality of the workpieces is improved.
Description
Technical field
The present invention relates to laser-transmitting welding field, be particularly connected clamping device for the laser-transmitting between thermoplastic or between thermoplastic with metal material, specifically a kind of fluid pressure type laser-transmitting connects clamping device.
Background technology
Along with the development of plastic industry, novel high polymer material and composite emerge in an endless stream, plastic products have lightweight, cost is low, excellent spring, the advantage such as corrosion-resistant.Thermoplastic application is more extensive, most of thermoplastic articles is all mechanograph, affect by injection moulding, extrusion molding processing technology and Mold Making etc. are many-sided, a lot of out-of-shape or baroque plastic products are difficult to single injection-molded, usually most economical, effective method is combined by multiple simple moulding, therefore, there is the method for attachment of various thermoplastic.Traditional mechanical joining methods can not get widely using due to shortcomings such as easy damaged components and parts, the introducings connecting insecure and foreign substance.Laser-transmitting welding has the following advantages compared to above several traditional welding method: form weld seam that is accurate, firm, sealing; Be easy to control, can automated production be realized; Welding heat affected zone is little; Speed of welding is fast, and quality is high, and weld seam is positioned at material interface place; Welded stress and vibration stress little; The welding of foreign material can be realized.So be the potential welding method of most between current thermoplastic and between thermoplastic and metal.
Laser-transmitting solder technology is the trend of future development, but it also faces a great problem, is exactly weld clamp device.According to correlative study, in welding process, the size of thrust and whether the even quality to weldment has a significant impact, but most of weld clamp device can not obtain constant thrust.Secondly, patent " welder and welding method thereof for plastic welding laser material ", application number is: 201110109966.5, this welder is by hydraulic-driven press plate mechanism, make it to coordinate with gripper shoe to carry out workpiece and clamp, the large I of pressure is controlled by pressure regulator valve and is reached on display by pressure sensor to show.The advantage of this welder is that mechanism is comparatively simple, and pressure is easy to regulation and control.Shortcoming can only be welded some plane weld seams (namely surface requirements is smooth), cannot realize the welding of three-dimensional weld seam, but in practical application, the application of three-dimensional welding part gets more and more.The Globo welder of Lai Dan company invention is more ingenious, its welded header has a glass marble, this glass marble can to laser beam focus, thrust can be applied again, its major advantage is the welding that can realize Arbitrary 3 D weld seam, and compact conformation, but what it adopted is a single point contact, easily cause welding rear stress to concentrate, in addition the long-time rolling friction of this glass marble easily causes glass marble surface abrasion, glass marble optical property is deteriorated, so, in the urgent need to a kind of device that can overcome above shortcoming.
Summary of the invention
The object of the invention is for above-mentioned the deficiencies in the prior art, design and be a kind ofly connected clamping device for the fluid pressure type laser-transmitting between thermoplastic or between thermoplastic with metal material, it can realize the welding to arbitrary surface workpiece, can accurately control path of welding and thrust simultaneously, improve bulk strength and the rigidity of weldment, adopt hydraulic compression, thrust is evenly distributed on surface, occur that stress is concentrated after avoiding processing, improve the quality of processing work.
Technical scheme of the present invention is:
A kind of fluid pressure type laser-transmitting connects clamping device, it is characterized in that it comprises PC, counterdie, PLC, hydrostatic sensor, light source control mechanism, hydraulic control system, the pressure needed for the force value surveyed according to hydrostatic sensor of described PC to be applied the upper workpiece be arranged on counterdie and lower workpiece by PLC hydraulic control control system, and automatic pressure-reducing when exceeding setting value of the pressure in closed container, the releasing pressure automatically when the mechanism of decompressor lost efficacy; Light source control mechanism controls laser head needs the position of welding is moved in to-be-welded pieces.
Described light source control mechanism is: PC connects servomotor, Serve Motor Control X-axis servomotor, Y-axis servomotor and Z axis servomotor.Laser head is installed on Z-direction guide rail, and Z axis Serve Motor Control laser head does Z-direction motion on Z-direction guide rail; Z-direction guide rails assembling is on Y-direction guide rail, and Y-direction motion done by Y-axis Serve Motor Control Z-direction guide rail on Y-direction guide rail; Y-direction guide rail is installed on again on X direction guiding rail, and X-axis Serve Motor Control Y-direction guide rail makes X to motion on X direction guiding rail; So just can control laser head and send laser in optional position, space.
Described PC connects PLC, the magnetic valve on the left side in PLC control chart, and this magnetic valve is a two-position three way magnetic valve; An outlet of magnetic valve connects closed container, for carrying water to closed container; Magnetic valve also has one to export connection water tank; Last outlet connecting fluid press pump of magnetic valve, the water that hydraulic pump is drawn from water tank, also has a filter between, and between hydraulic pump and magnetic valve, side connects an overflow valve; When magnetic valve is in left position in figure, the water that hydraulic pump is drawn inputs closed container through magnetic valve; When magnetic valve is in right position in figure, the water that hydraulic pump is drawn is through magnetic valve reflow tank.
Described PC connects PLC, the magnetic valve on the right in PLC control chart, and this magnetic valve is a two-position two-way solenoid valve; An outlet of magnetic valve connects closed container, for giving the decompression of the water in closed container; An outlet of magnetic valve connects water tank; When magnetic valve is in left position in figure, the water in closed container can not reflow tank; When magnetic valve is in right position in figure, the current recovery tank in closed container, thus reduce pressure to closed container.
Described pressure relief mechanism (protection mechanism) is an overflow valve, for preventing because surprisingly cause hydraulic pressure too high in closed container.
Described counterdie customizes according to lower workpiece, and counterdie and lower workpiece can be combined together, and its material is aluminium alloy or steel.
Described upper workpiece is to laser-light transparent, and workpiece on laser-light transparent, described lower workpiece is opaque to laser, has the ability of stronger absorbing laser.
Described closed container upper surface can be opened, and when it is closed, closed container is a confined space.
PC of the present invention according to the position of pad, can control the open and close time of laser by control both optical system; PC, according to the position of pad, controls hydraulic pressure sensor by control step motor and moves up and down, and measures the hydraulic pressure of pad.
The present invention realizes also needing following equipment and requirement: before welding, with the hyaline membranes such as preservative film (laser-light transparent to certain wavelength) upper workpiece, lower workpiece and counterdie seal.
In PC, input pre-pressing force, PC calculates the hydraulic pressure that pad needs, the comparing result of the hydraulic pressure that PC needs according to the data of hydraulic pressure sensor and pad, and corresponding action made by control PLC controller; (be less than when the data of hydraulic pressure sensor are less than the hydraulic pressure of pad needs and just trigger to a certain extent), in PLC control chart, the magnetic valve on the left side is in left position in figure, in control chart, the magnetic valve on the right is in left position in figure, thus gives pressurization in closed container; When the data of hydraulic pressure sensor equal the hydraulic pressure of pad needs, in PLC control chart, the magnetic valve on the left side is in right position in figure, and in control chart, the magnetic valve on the right is in left position in figure; When the data of welding end or hydraulic pressure sensor are greater than the hydraulic pressure of pad needs (be greater than and just trigger to a certain extent), in PLC control chart, the magnetic valve on the left side is in right position in figure, in control chart, the magnetic valve on the right is in right position in figure, thus gives decompression in closed container; According to shape and the pre-welding region of upper workpiece and lower workpiece on workbench, PC generates control program instruction, and then control servomotor, then Serve Motor Control laser head moves along particular course, thus realizes the welding to upper workpiece and lower workpiece.
The laser-transmitting of thermoplastic of the present invention connects clamping device and has the following advantages:
1, the present invention can not only carry out simple two dimensional weld on flat work pieces, and can weld on three-dimension curved surface.
2, this device adopts Technology of NC Programming, and accurately can control welding position, realize meticulous welding, path of welding also can be selected arbitrarily.
3, the present invention adopts hydraulic compression, and thrust is uniformly distributed, and occurs that stress is concentrated after avoiding processing, improves the quality of processing work.
Accompanying drawing explanation
Fig. 1 is general structure schematic diagram of the present invention.
In figure: 1 is hydrostatic sensor, 2 is servomotor, and 3 is laser head, and 4 is laser, 5 is closed container, and 6 is water, and 7 is upper workpiece, 8 is lower workpiece, and 9 is workbench, and 10 is overflow valve, 11 is magnetic valve, and 12 is water tank, and 13 is PLC, 14 is counterdie, and 15 is PC, and 16 is filter, 17 is hydraulic pump, and 18 is magnetic valve, and 19 is overflow valve.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further illustrated.
As shown in Figure 1.
A kind of fluid pressure type laser-transmitting connects clamping device, comprises PC 15, counterdie 14; PLC 13, hydrostatic sensor 1, light source control mechanism and hydraulic control system; and hydraulic control system can be divided into three subsystems, i.e. compression system, depressurized system and pressure relief system (protection mechanism).
Can through the upper workpiece 7 of laser 4, can not through lower workpiece 8 and of laser 4
steel counterdie 14being wrapped to form a waterproof seal by preservative film is positioned on workbench 9, workbench 9 is installed in one and is marked with in the closed container 5 of water 6, the upper cover of closed container 5 can be opened and be beneficial to picking and placeing of workpiece to be welded, one is provided with for measuring the hydrostatic sensor 1 of welding position place pressure in closed container 5, hydrostatic sensor 1 can move up and down in closed container 5 (can be driven by servomotor and conventional drive mechanism), surveyed pressure passes in PC 15 and processes by hydrostatic sensor 1, then determined whether to need to pressurize to closed container 5 by PC 15, if need pressurization, left position in figure is in by PLC 13 Controlling solenoid valve 18 by PC 15, hydraulic pump 17 passes through magnetic valve 18 to water filling 6 in closed container 5 to increase the pressure in closed container 5, after the pressure in closed container 5 reaches setting value, magnetic valve 18 commutates and is back in water tank 12 by the superfluous water of hydraulic pump 17 sucking-off, if the hydraulic pressure in closed container 5 exceedes setting value or welding end when needing pressure release, another magnetic valve 11 that then PLC 13 controls to be connected with closed container 5 is in right position in figure, unnecessary water 6 is back to water tank 12, otherwise, magnetic valve 11 is in left position in figure, if magnetic valve 11 does not work or to lose efficacy and hydrostatic sensor 1 measuring pressure is greater than setting safety value, then the overflow valve 10 be connected with closed container 5 works, and the water 6 of closed container 5 is introduced water tank 12 and realizes safety relief.Run by the route of setting under the control of servomotor 2 and driving mechanism thereof for the laser head 3 that carries out laser weld, complete whole welding process, the dimension that the quantity of servomotor 2 can be moved as required is determined, can be bidimensional, also can be three-dimensional, the motion of servomotor 2 can be controlled by PC 15.
Clamping device of the present invention is utilized to carry out the transmission laser welding method of thermoplastic as follows:
(1) irregular upper workpiece 7 and lower workpiece 8 is provided with, counterdie 14 is made according to lower workpiece 8, lower workpiece 8 and counterdie 14 coordinate, counterdie 14 is steel, upper workpiece 7 is placed on above lower workpiece 8, and counterdie 14 is placed on below lower workpiece 8, with the hyaline membranes such as preservative film (laser-light transparent to certain wavelength) upper workpiece 7, lower workpiece 8 and counterdie 14 package encapsulation get up, and place it on workbench 9.
(2) according to shape and the pre-welding region of upper workpiece 7 and lower workpiece 8, PC 15 generates control program instruction, and then PC 15 controls servomotor 2 according to control program instruction, and servomotor 2 controls X-axis servomotor, Y-axis servomotor and Z axis servomotor; X-axis Serve Motor Control Y-direction guide rail makes X to motion on X direction guiding rail, Y-direction motion done by Y-axis Serve Motor Control Z-direction guide rail on Y-direction guide rail, Z axis Serve Motor Control laser head 3 does Z-direction motion on Z-direction guide rail, so just can control laser head 3 and move to weld start position.
(3) in PC 15, input pre-pressing force, PC 15 calculates the hydraulic pressure that pad needs, the comparing result of the hydraulic pressure that PC 15 needs according to the data of hydraulic pressure sensor 1 and pad, and corresponding action made by control PLC controller 13; (be less than when the data of hydraulic pressure sensor 1 are less than the hydraulic pressure of pad needs and just trigger to a certain extent), PLC 13 Controlling solenoid valve 18 is in left position in figure, Controlling solenoid valve 11 is in left position in figure, thus give the interior pressurization of closed container 5 (when magnetic valve 18 is in left position in figure, the water that hydraulic pump 17 is drawn inputs closed container 5 through magnetic valve 18, when magnetic valve 11 is in left position in figure, the water 6 in closed container 5 can not flow back into water tank 12); When the data of hydraulic pressure sensor 1 equal the hydraulic pressure of pad needs, PLC 13 Controlling solenoid valve 18 is in right position in figure, and Controlling solenoid valve 11 is in left position in figure.(when magnetic valve 18 is in right position in figure, the water that hydraulic pump 17 is drawn is through magnetic valve 18 reflow tank 12, and when magnetic valve 11 is in left position in figure, the water 6 in closed container 5 can not flow back into water tank 12)
(4) after starting processing, PC 15, according to the position of pad, controls X-axis servomotor and Y-axis servomotor by servomotor 2, thus control laser 4 runs along weld seam; PC 15 is according to the position of pad simultaneously, controls Z axis servomotor by servomotor 2, thus controls the position of laser 4 focus.
(5) in the process of welding, PC 15 contrasts the hydraulic pressure that the data of hydraulic pressure sensor 1 and pad need in real time, makes corresponding action according to output control PLC 13; (be less than when the data of hydraulic pressure sensor 1 are less than the hydraulic pressure of pad needs and just trigger to a certain extent), PLC 13 Controlling solenoid valve 18 is in left position in figure, and Controlling solenoid valve 11 is in left position in figure, thus gives pressurization in closed container 5; When the data of hydraulic pressure sensor 1 equal the hydraulic pressure of pad needs, PLC 13 Controlling solenoid valve 18 is in right position in figure, and Controlling solenoid valve 11 is in left position in figure; (be greater than when the data of hydraulic pressure sensor 1 are greater than the hydraulic pressure of pad needs and just trigger to a certain extent), PLC 13 Controlling solenoid valve 18 is in right position in figure, Controlling solenoid valve 11 is in right position in figure, thus (when magnetic valve 18 is in right position in figure, the water that hydraulic pump 17 is drawn is through magnetic valve 18 reflow tank 12 to give decompression in closed container 5; When magnetic valve 11 is in right position in figure, the water 6 in closed container 5 through magnetic valve 11 reflow tank 12, thus reduces pressure to closed container 5).
(6) at the end of welding, PC 15 controls laser instrument and cuts out, be in right position in figure by PLC 13 Controlling solenoid valve 18 simultaneously, Controlling solenoid valve 11 is in right position in figure, thus make part water 6 reflow tank 12 in closed container 5, to facilitate taking-up weldment, since then, this laser-transmitting connects the welding job that clamping device completes workpiece 7 and lower workpiece 8.
When not deviating from the principle of the invention, any amendment done, the substitute modes such as simplification, are all included within protection scope of the present invention.
The part that the present invention does not relate to prior art that maybe can adopt same as the prior art is realized.
Claims (10)
1. a fluid pressure type laser-transmitting connects clamping device, it is characterized in that it comprises PC (15), counterdie (14), PLC (13), hydrostatic sensor (1), light source control mechanism, hydraulic control system, pressure needed for the force value surveyed according to hydrostatic sensor (1) of described PC (15) to be applied the upper workpiece (7) be arranged on counterdie (14) and lower workpiece (8) by PLC (13) hydraulic control control system, and automatic pressure-reducing when exceeding setting value of the pressure in closed container (5), the releasing pressure automatically when the mechanism of decompressor lost efficacy, light source control mechanism controls laser head (3) needs the position of welding is moved in to-be-welded pieces.
2. fluid pressure type laser-transmitting according to claim 1 connects clamping device, and it is characterized in that described PC (15) connects PLC (13), PLC (13) Controlling solenoid valve (18), magnetic valve (18) is a two-position three way magnetic valve; An outlet of magnetic valve (18) connects closed container (5), for giving closed container (5) conveying water (6); Magnetic valve (18) also has an outlet to connect water tank (12); Last outlet connecting fluid press pump (17) of magnetic valve (18), hydraulic pump (17) draws water from water tank (12), also has a filter (16) between, and between hydraulic pump (17) and magnetic valve (18), side connects an overflow valve (19); When magnetic valve (18) is in left position, the water that hydraulic pump (17) is drawn is through magnetic valve (18) input closed container (5); When magnetic valve (18) is in right position, the water that hydraulic pump (17) is drawn is through magnetic valve (18) reflow tank (12).
3. fluid pressure type laser-transmitting according to claim 1 connects clamping device, and it is characterized in that described PC (15) connects PLC (13), PLC (13) Controlling solenoid valve (11), magnetic valve (11) is a two-position two-way solenoid valve; An outlet of magnetic valve (11) connects closed container (5), for giving the decompression of the water (6) in closed container (5); An outlet of magnetic valve (11) connects water tank (12); When magnetic valve (11) is in left position, the water (6) in closed container (5) can not reflow tank (12); When magnetic valve (11) is in right position, water (6) reflow tank (12) in closed container (5), thus give closed container (5) decompression.
4. fluid pressure type laser-transmitting according to claim 1 connects clamping device, it is characterized in that described closed container (5) is connected with an overflow valve as hydraulic control system pressure relief mechanism (10), for preventing because surprisingly cause hydraulic pressure too high in closed container (5).
5. the fluid pressure type laser-transmitting according to claim 1-4 connects clamping device, it is characterized in that described PC (15) produces the water (6) of certain pressure by hydraulic control system, then the water of this certain pressure (6) is used to clamp upper workpiece (7) and lower workpiece (8), thus the clamping realized arbitrary surface workpiece, thrust is evenly distributed on surface, occur after avoiding processing that stress is concentrated, and accurately can control thrust.
6. fluid pressure type laser-transmitting according to claim 1 connects clamping device, and it is characterized in that the profile of described counterdie (14) and lower workpiece (8) match, the material of counterdie (14) is aluminium alloy or steel.
7. fluid pressure type laser-transmitting according to claim 1 connects clamping device, it is characterized in that described upper workpiece (7) is to the transparent thermoplastic polymer of laser (4), described lower workpiece (8) is to opaque thermoplastic polymer or titanium alloy, the stainless steel and other metal materials with stronger absorbing laser (4) ability of laser (4).
8. fluid pressure type laser-transmitting according to claim 1 connects clamping device, it is characterized in that welding on workpiece (7) and lower workpiece (8) front, with preservative film upper workpiece (7), lower workpiece (8) and counterdie (14) seal, and enter upper workpiece (7), between lower workpiece (8) and counterdie (14) to prevent the water (6) in closed container (5).
9. fluid pressure type laser-transmitting according to claim 1 connects clamping device, it is characterized in that described PC (15) is according to the position of pad, controls the open and close time of laser (4) by control both optical system; PC (15), according to the position of pad, by control step motor, controls hydraulic pressure sensor (1) and moves up and down, measure the hydraulic pressure of pad.
10. the fluid pressure type laser-transmitting according to claim 1-4 connects clamping device, and it is characterized in that described closed container (5) upper surface can be opened, when it is closed, closed container (5) is a confined space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410495727.1A CN104309113A (en) | 2014-09-25 | 2014-09-25 | Hydraulic laser transmission connection clamping apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410495727.1A CN104309113A (en) | 2014-09-25 | 2014-09-25 | Hydraulic laser transmission connection clamping apparatus |
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| CN104309113A true CN104309113A (en) | 2015-01-28 |
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| CN201410495727.1A Pending CN104309113A (en) | 2014-09-25 | 2014-09-25 | Hydraulic laser transmission connection clamping apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106587581A (en) * | 2016-12-11 | 2017-04-26 | 大连哈尼比科技有限公司 | Glass fusion bonding method, as well as manufacturing method and manufacturing equipment of vacuum glass |
| CN107378282A (en) * | 2017-08-24 | 2017-11-24 | 广东工业大学 | A kind of vapour-pressure type laser machines clamping device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008063975A1 (en) * | 2008-12-19 | 2010-07-08 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for laser beam joining |
| CN102935720A (en) * | 2012-11-16 | 2013-02-20 | 江苏大学 | Laser transmission connection double-face clamping device |
-
2014
- 2014-09-25 CN CN201410495727.1A patent/CN104309113A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008063975A1 (en) * | 2008-12-19 | 2010-07-08 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for laser beam joining |
| CN102935720A (en) * | 2012-11-16 | 2013-02-20 | 江苏大学 | Laser transmission connection double-face clamping device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106587581A (en) * | 2016-12-11 | 2017-04-26 | 大连哈尼比科技有限公司 | Glass fusion bonding method, as well as manufacturing method and manufacturing equipment of vacuum glass |
| CN107378282A (en) * | 2017-08-24 | 2017-11-24 | 广东工业大学 | A kind of vapour-pressure type laser machines clamping device |
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Application publication date: 20150128 |