CN206356731U - Laser melting coating feed device - Google Patents

Abstract

The utility model is related to a kind of laser melting coating feed device, belong to field of laser processing, the laser melting coating feed device receives incident beam and is converted into focus on light beam to form focus on base material by incident beam, laser melting coating feed device includes support frame, it is arranged on the spectroscope on support frame and reflection focus lamp and the nozzle below reflection focus lamp, incident beam is divided at least two beam the reflected beams by spectroscope, again at least two beam focus on light beam are focused into by reflecting focus lamp by least two beam the reflected beams, at least two beam focus on light beam form hollow no light zone and focus, cooling is formed with laser melting coating feed device, and but medium circulation is flowed with to support frame, spectroscope, reflect the light path cooling system of focus lamp cooling.Cooling but light path cooling system of the medium circulation flowing to cool to support frame, spectroscope, reflection focus lamp is formed with the laser melting coating feed device, good cooling-down effect can be achieved, and then support frame, spectroscope, the service life for reflecting focus lamp can be improved.

Description

Laser melting coating feed device

Technical field

The utility model is related to a kind of laser melting coating feed device, belongs to field of laser processing.

Background technology

In advanced laser machining forming manufacturing technology, there is a key technology, i.e., pass laser with synchronous material is melt Transport to and shape position, and metal material continuously, accurately, is equably put on machined surface by desired trajectory work scanning fortune In dynamic focal beam spot, realize that light material is accurately coupled.Material carries out the conversion of luminous energy and heat energy, instant melting and shape in light beam Into molten bath, the metallurgical process of the rapid melting solidification of material is completed.The feeding method of domestic and foreign current can be divided into the outer wire feed of light With wire feed in light.

The structure of the outer wire feed of light is as shown in figure 1, it uses unilateral wire feed, in existing Laser Overlaying cladding or welding method In, the laser beam 11 launched by laser is focused mirror 110 and is focused into cone-shaped beam 12, but, due to wire-feeding pipe and spinneret 13 An angle can only be tilted with respect to cone-shaped beam 12 to install, the silk material 14 sent out by spinneret can only be inclined by sending into laser beam, institute Adjustment silk material is needed to make it in facula position and beam intersection (bibliography before processing to generally require：Wang Zhiyao chief editor China Material engineering grand ceremony Beijing of volume 25：Chemical Industry Press, 2006；2nd, Zuo Tiechuan edit .21 centuries advanced manufacture-swash Light technology and engineering Beijing, Science Press, 2007,5；3、Waheed UI Haq Syed,Lin Li.Effects of wire feeding direction and location in multiple layer diode laser direct metal deposition.Applied Surface Science,24March 2005).By above-mentioned as can be seen that one side The greatest drawback that wire feed is brought is exactly that silk material is to be tilted into molten bath, the heat work of suffered light beam irradiation, molten bath heat transfer and radiation With asymmetric, uneven, especially work as in cladding and directional change inevitably occur, that is, laser beam is with respect to machined surface in processing When making the scanning motion of different directions, just there are different orientation and posture in light beam and silk material relative scanning motion direction, silk material Melting and the heat effect in molten bath and power mechanism effect will change, so that solidification Hou Rong roads size, pattern, surface Roughness etc. can be varied widely, or even cause melting process off and on.For common one direction in unilateral wire feed Beam-shaping effect is not present in the single or multiple lift cladding built-up welding of scanning, will not change because it is sent into orientation angles, and to complexity For particularly three-dimensional directly rapid shaping etc. the technique of surface build-up welding, it is being continually changing due to scanning track and direction, it influences just It is very prominent, the continuity of cladding or molten road quality all it is difficult to ensure that.In addition, during cladding silk material feeding point must workpiece surface with Beam focal location it is intersecting therewith overlap, its intersection point again because being limited on weld pool surface in the region of next very little, but if plus The intersection point of this in work has positional fluctuation and change (unavoidable, especially in multilayer accumulation), silk up and down with respect to finished surface (or molten bath) The heat effect of material will be changed again, and the fusion process of silk material may be made discontinuously to carry out, the bending of silk material leading portion, and light and silk are discontinuously right Accurate and dislocation, so makes the minor variations of relative position between the continuity of cladding process and molten road quality focusing and machined surface It is all very sensitive.In addition, laser cladding process often needs to convey inert protective gas around molten bath, produced with blow pressure cladding Hot flame, slag etc., so as to protect cylinder lumen eyeglass not contaminated, while molten bath is not oxidized.In the lateral wire feed of prior art In device, due to structure limitation, protective gas also can only blow laterally, and its blow pressure power to molten bath is uneven, and air turbulence is protected Protect effect poor.

Wire feeding cladding method is used feeding method in laser light as disclosed in Chinese Patent No. CN101386111A in light There is light inlet above cylinder of the wire feeding cladding method using wire feeder in light in wire feeder in light, the laser light, lower section has Light-emitting window, light inlet is coaxial with light-emitting window.Three ribs of body centre uniform design are connected with cylinder inboard wall, are secured on rib One conscope, the conical mirror of conscope is facing to light inlet and co-axial line.Incoming laser beam is cut, reflected by conscope It is transformed to annular beam.An annular reflection focus lamp also it has been co-axially mounted on cylinder inboard wall with conscope, its minute surface is towards institute State conscope.The annular beam of conscope reflection is incided on annular reflection focus lamp, then reflects poly- by annular reflection focus lamp Form a tapered hollow no light zone and focus in burnt cyclization cone focused beams, ring cone focused beams, focus light-emitting window it Outside.Single wire-feeding pipe is inserted outside cylinder, the space through conscope and annular reflection focus lamp, reaches the conscope back of the body Switch to behind face and ring cone-shaped beam coaxial line so that the spinneret of wire feed tube end is placed in the tapered hollow of the ring cone-shaped beam In no light zone, and with ring cone-shaped beam coaxial line.Focus of the spinneret outlet port close to ring cone-shaped beam.Silk material is from wire-feeding pipe Middle feeding, is exported by the spinneret of wire-feeding pipe lower end, is irradiated being surrounded close to focal point by the ring cone-shaped beam bottom, so Afterwards under the collective effect of illumination and molten bath heat transfer, the heat radiation of substrate surface etc. be heated and continuous melting and vertically into Molten bath, treats that the substrate surface of cladding is adjusted to the near focal point, fuses into the silk material and the base material Surface sheet of part fusing in molten bath With the relative movement of light beam and base material, continuous solidification forms molten road to the melt that material is collectively forming in molten bath, molten bath.Above rib Side to light apply and be coated with light absorbent, cooling water channel is provided with inside rib.It is effectively reduced by being arranged to bead structures and is met Light area, reduces illumination loss.The side to light that the wire-feeding pipe is in cylinder, which is applied, is coated with light absorbent, and inside is provided with cooling Water channel.

Although wire feeder has the effect that in this light：

Hollow ring focus on light beam is obtained by light chopper, wire-feeding pipe is placed in focus on light beam hollow part and and light beam Silk material and focus on light beam coaxially send into spot center by forward direction in coaxial line, processing, silk material always by annular beam symmetrically Surround.In cladding process, no matter how silk material and light beam change with respect to the direction of relative movement of machined surface (or molten bath), such as In three-dimensional cladding processing when light beam scanning direction arbitrarily changes, the orientation and appearance in light beam and silk material relative scanning motion direction State is identical, and the melting of silk material and the heat effect in molten bath and power mechanism do not change in theory, completely eliminate and sweep Retouch the influence that directionality is brought.On the other hand, light beam is with respect to when fluctuation produces defocus above and below molten bath, and silk material can be directed at hot spot all the time With the center in molten bath, hot spot and silk material will not misplace.So, silk material is kept constant with molten bath by the mode of heat effect, makes hot work With holding uniformly, stably.Under the influence of scanning light beam is with respect to the change of machined surface three-dimensional position, the active force between silk material and molten bath Perseverance is forward direction, and silk material does not cause skewed, is conducive to molten bath driving force balanced symmetrical with melt flows.Meanwhile, silk material hypomere and plus Work surface is all the time by laser irradiation and the heat effect in molten bath symmetrically, and uniform heated and process of setting is greatly improved Molten road quality.

But still exist following not enough：

Because incident light has to that, by three gussets on cylinder, following defect can be brought：

1st, light has energy loss by three gussets, reduces effective cladding energy；

Although the 2, being applied on the side to light of rib and being coated with light absorbent, but if technology stability is bad, light is still had anti- Condenser is mapped to, easily causes it to cross cause thermal damage, so, higher is required to coating light absorbent technology difficulty；

There is scale error when the 3rd, being assembled due to conscope and focus lamp, cause to focus on the light that illumination is mapped on three gussets The position dimension that beam area is different or light beam is on gusset is different, therefore it is inconsistent to be easily caused three gussets deformations, is easily caused The coaxial precision of hot spot and silk material is not high in cladding process, so as to cause cladding Quality Down；

4th, cooling water channel is provided only on inside rib, so, cooling-down effect is not obvious；Spinneret outlet port is far from cladding area Domain is closer, and silk material can be communicated the temperature on spinneret, and spinneret is due to the presence of high temperature, and being not only easily deformed causes hot spot With the coaxial deterioration in accuracy of silk material, and be easily caused shower nozzle damage.Due to the space very little between Ring-beam and wire feeding mouth, It can not arrange that water route is cooled down, more cause spinneret to be easily damaged；

5th, light also passes through wire-feeding pipe, not only adds energy loss, and due to there was only part illumination on whole piece wire-feeding pipe Its surface is mapped to, due to heated uneven, wire-feeding pipe deformation also resulted in, causes wire-feeder resistance to increase, ultimately result in wire feed mistake Journey medium velocity changes, and influences cladding layer form accuracy.

Utility model content

The purpose of this utility model is to provide a kind of laser melting coating feed device for realizing good cooling-down effect.

To reach above-mentioned purpose, the utility model provides following technical scheme：A kind of laser melting coating feed device, receive into The incident beam simultaneously is converted into focus on light beam to form focus, the laser melting coating feed device bag on base material by irradiating light beam Include support frame, the spectroscope being arranged on support frame as described above and reflection focus lamp and the spray below the reflection focus lamp Incident beam is divided at least two beam the reflected beams by mouth, the spectroscope, then will at least two beam reflected lights by reflecting focus lamp Beam is focused at least two beam focus on light beam, and at least focus on light beam described in two beams forms hollow no light zone and focus, and the laser melts Cover and cooling but light of the medium circulation flowing to cool to support frame as described above, spectroscope, reflection focus lamp is formed with feed device Line cooling system.

Further：The light path cooling system includes confession cooling medium passes through first be opened in support frame as described above The second cooling duct and be opened in the reflection focusing that cooling duct, the confession cooling medium being opened in the spectroscope pass through The 3rd cooling duct that confession cooling medium in mirror passes through, first cooling duct is cold respectively at the second cooling duct and the 3rd But passage is connected.

Further：Cooling is formed with the laser melting coating feed device, and but medium circulation flows to drop to the nozzle The nozzle cooling system of temperature.

Further：Nozzle overcoat is arranged with the nozzle, the nozzle overcoat includes base portion, through the base portion Nozzle installation through-hole and in base portion towards the coldplate muscle to be formed is protruded out in the nozzle installation through-hole, the nozzle overcoat passes through institute State nozzle installation through-hole to cover to center-aisle on the nozzle, is formed with the base portion, the coldplate muscle is located at centre Between passage and the nozzle, and be posted by the nozzle, the base portion be further opened with it is cold with the center-aisle UNICOM But medium entrance and cooling medium outlet, the nozzle cooling system is by the center-aisle, cooling medium inlet, cooling medium Outlet and coldplate muscle composition, the cooling medium flow through cooling medium inlet, center-aisle and cooling medium outlet successively.

Further：The nozzle overcoat is located in the hollow no light zone.

Further：The laser melting coating feed device also includes jackshaft, and support frame as described above includes lower bracing frame, described Jackshaft is arranged in the lower bracing frame, and the jackshaft is located at the lower section of the spectroscope and reflection focus lamp, the spray Mouth is arranged on the jackshaft, and in the hollow no light zone, the first feeding channel is provided with the lower bracing frame, The feeding entrance for running through the lower bracing frame side by first feeding channel, the centre are provided with the lower bracing frame The second feeding channel that the nozzle is provided through in feeding guide groove, the nozzle is provided with axle, the feeding guide groove One end is connected with the first feeding channel, and the other end is connected with the second feeding channel.

Further：Set in the lower bracing frame and set second to protect gas in the first protective gas passage, the jackshaft The 3rd protective gas passage, one end of the second protective gas passage and the first protection are provided with body passage, the nozzle Gas passage is docked, and the other end is docked with the 3rd protective gas passage.

Further：It is provided with nozzle overcoat, the nozzle overcoat and is formed through outside the nozzle on the nozzle 4th protective gas passage of set, the two ends of the 3rd protective gas passage are protected respectively at the second protective gas passage, the 4th Gas passage docking is protected, the 4th protective gas passage, the second feeding channel and hollow no light zone, focus are coaxial.

Further：The laser melting coating feed device also includes jackshaft, and support frame as described above includes lower bracing frame, described Jackshaft is arranged in the lower bracing frame, and the jackshaft is located at the lower section of the spectroscope and reflection focus lamp, the spray Mouth is arranged on the jackshaft, and in the hollow no light zone, the first protective gas passage is set in the lower bracing frame, Set in the jackshaft and the 3rd protective gas passage is provided with the second protective gas passage, the nozzle, described second protects One end of shield gas passage is docked with the first protective gas passage, and the other end is docked with the 3rd protective gas passage.

Further：The spectroscope and reflection focus lamp are coaxial, and the spectroscope includes two light splitting minute surfaces, described point Light microscopic face is plane or arc shaped surface；The reflection focus lamp has the focusing minute surface towards light splitting minute surface, and the focusing minute surface is One camber minute surface, or, the focusing minute surface is made up of multiple camber minute surfaces.

The beneficial effects of the utility model are：Followed by being formed with the laser melting coating feed device for cooling medium Circulation it is dynamic with to support frame as described above, spectroscope, reflection focus lamp cooling light path cooling system, so as to simultaneously to support frame, Spectroscope, reflection focus lamp cooling, realize good cooling-down effect, and then can improve support frame, spectroscope, reflect making for focus lamp Use the life-span.

Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model Art means, and being practiced according to the content of specification, with preferred embodiment of the present utility model and coordinate accompanying drawing detailed below Describe in detail bright as after.

Brief description of the drawings

Fig. 1 is the schematic diagram of the outer feeding method of existing laser melting and coating technique light；

Fig. 2 is the sectional view of the laser melting coating feed device shown in the preferred embodiment of the utility model one, containing light path signal；

Fig. 3 is spectroscopical structural representation in Fig. 2；

Fig. 4 is the spectroscope shown in Fig. 3 in the structural representation on other direction；

Fig. 5 is the structural representation of lower bracing frame in Fig. 2；

Fig. 6 is the lower bracing frame shown in Fig. 5 in the structural representation on other direction；

Fig. 7 is part-structure schematic diagram in Fig. 2；

Fig. 8 be Fig. 2 shown in laser melting coating feed device in the sectional view on other direction, without light path；

Fig. 9 be Fig. 8 in part-structure enlarged drawing；

Figure 10 is the assembling figure of part-structure in Fig. 2；

Figure 11 be Fig. 2 in part-structure enlarged drawing；

Figure 12 is the structural representation of nozzle overcoat in Fig. 2；

Figure 13 is coated at the structural representation on other direction for the nozzle shown in Figure 12；

Figure 14 is the structural representation of the light cladding feed device shown in another embodiment of the utility model；

Figure 15 is the light cladding feed device shown in Figure 14 in the structural representation on another visual angle.

Embodiment

With reference to the accompanying drawings and examples, embodiment of the present utility model is described in further detail.Below Embodiment is used to illustrate the utility model, but is not limited to scope of the present utility model.

Fig. 2 and Fig. 7 are referred to, the laser melting coating feed device shown in embodiment one is to receive incident beam 20 and by institute Incident beam 20 is stated to be converted into focus on light beam 30 to form focus 40 on base material 80.The laser melting coating feed device includes branch Support 21, the spectroscope 22 being arranged on support frame as described above 21 and reflection focus lamp 23, positioned at reflection focus lamp 23 lower section Nozzle 24 and the jackshaft 25 on support frame as described above 21,20 points of incident beam is that two beams reflect by the spectroscope 22 Light beam 50, then it is focused into two beam focus on light beam 30 by reflecting focus lamp 23 by two beam the reflected beams 50, focus on light described in two beams Beam 30 forms hollow no light zone 60 and focus 40.In Fig. 2, black shaded area meaning is light path part, and the light path part includes Incident beam 20, the reflected beams 50, focus on light beam 30 and the focus 40 formed on base material 80.Incorporated by reference to Fig. 2, Fig. 5 and figure 6, support frame as described above 21 includes lower bracing frame 211 and the upper support frame 212 being fixed in the lower bracing frame 211, the lower branch Support 211 is protruded out upwards including the upper support frame installation portion 2111 of structure in a ring, on the upper support frame installation portion 2111 The reflection focus lamp installation portion 2112 of formation, positioned at the upper support frame installation portion 2111 it is hollow in fixture 2113 and even The bearing rib 2114 of fixture 2113 and upper support frame installation portion 2111 is connect, the reflection focus lamp installation portion 2112 is in ring Shape, the outside diameter of the upper support frame installation portion 2111 is more than the outside diameter of reflection focus lamp installation portion 2112.On described Support frame 212 is arranged on the upper support frame installation portion 2111, and the reflection focus lamp 23 is arranged on the reflection focus lamp On installation portion 2112, the fixture 2113 includes the spectroscope mounting surface 2115 and jackshaft mounting surface 2116 being disposed opposite to each other, The spectroscope 22 is fixed on spectroscope mounting surface 2115.The jackshaft 25 is fixed on the jackshaft mounting surface 2116 On, the jackshaft 25 is located at the lower section of spectroscope 22, and the nozzle 24 is arranged on the jackshaft 25.The fixture 2113 with it is upper Support frame installation portion 2111 does not connect, and the annular hollow 2117 passed through for focus on light beam 30 is formed between the two.The support The projection of gusset 2114 is located in the annular hollow 2117, and the bearing rib 2117 staggers with focus on light beam 30.In this reality Apply in example, the bearing rib 2114 is located in annular hollow 2117, and annular hollow 2117 is divided into by the bearing rib 2114 Two arcuate segments passed through for two beam focus on light beam 30.In the present embodiment, the nozzle 24 is located in hollow no light zone 60, In the present embodiment, because nozzle 24 is arranged on jackshaft 25, and in hollow no light zone 60, so the present embodiment is sharp Light cladding feed device is using feeding in light.The upper support frame 212 and lower bracing frame 211 enclose to set to form a cavity and (do not mark Number), the reflection focus lamp 23, spectroscope 22 are located in the cavity, and the top of the upper support frame 212 is provided with incident light Beam opening 2121.Fig. 2 and Fig. 7 are referred to, support frame as described above 21 is wrong with incident beam 20, the reflected beams 50, focus on light beam 30 Open up and put, specifically：The incident beam 20, the reflected beams 50, focus on light beam 30 stagger setting with bearing rib 2114, should Focus on light beam 30 is passed through out of annular hollow 2117.By by support frame 21 and incident beam 20, the reflected beams 50, focus on light beam 30 stagger setting, to cause the support frame 21 not interfere with incident beam 20, the reflected beams 50, focus on light beam 30, reduce The energy loss of light path, improves capacity usage ratio, in addition, pass through such a design, it is to avoid in the prior art in light path process Region coating light absorbent, so as to help to reduce technology difficulty, helps to reduce cost.Incorporated by reference to Fig. 3, the spectroscope 22 Including two light splitting minute surfaces 221, the light splitting minute surface 221 is plane or arc shaped surface.Incorporated by reference to Fig. 4, the reflection focus lamp 23 For hollow circular cylinder structure, the reflection focus lamp 23 has the focusing minute surface 231 towards light splitting minute surface 221, the focus lamp Face 231 is a camber minute surface, or, the focusing minute surface 231 is made up of multiple camber minute surfaces.Refer to Fig. 2, the spectroscope 22 is coaxial with reflection focus lamp 23.

Cooling is formed with the laser melting coating feed device, and but medium circulation is flowed with to support frame as described above 21, spectroscope 22nd, but medium circulation flows nozzle to cool to the nozzle 24 to the light path cooling system and cooling that reflection focus lamp 23 cools 24 cooling systems.Really, in other embodiments, the light path cooling system and the cooling system of nozzle 24 can select a presence. Refer to Fig. 8, the light path cooling system include being opened in it is in support frame as described above 21 and for cooling medium pass through it is first cold But passage 213, be opened in the spectroscope 22 and the second cooling duct 222 for passing through for cooling medium and be opened in described The 3rd cooling duct 232 that is in reflection focus lamp 23 and passing through for cooling medium.First cooling duct 213 is respectively at Two cooling ducts 222 are connected with the 3rd cooling duct 232.Fig. 2 and Fig. 9 are referred to, and combines Figure 12 and Figure 13, the nozzle 24 On be arranged with nozzle overcoat 70, the nozzle overcoat 70 include base portion 71, the nozzle installation through-hole 72 through the base portion 71 and In base portion 71 towards the coldplate muscle 73 to be formed is protruded out in the nozzle installation through-hole 72, the nozzle overcoat 70 passes through the nozzle 72 sets of installation through-hole is formed with center-aisle 74, the coldplate muscle 73 is located on the nozzle 24 in the base portion 71 Between center-aisle 74 and the nozzle 24, and it is posted by the nozzle 24.It is further opened with the base portion 71 and the centre Cooling medium inlet 75 and the cooling medium outlet 76 of the UNICOM of passage 74.The base portion has the outer of the opposite setting of coldplate muscle 73 Sideways 711, the cooling medium inlet 75 and cooling medium outlet 76 run through the lateral surfaces 711 of base portion 71.The cooling medium according to Secondary to flow through cooling medium inlet 75, center-aisle 74 and cooling medium outlet 76, the nozzle cooling system is led to by above-mentioned centre Road 74, cooling medium inlet 75, cooling medium outlet 76 and coldplate muscle 73 are constituted.Because nozzle overcoat 70 passes through coldplate muscle 73 directly contact with nozzle 24, so as to reduce the temperature of nozzle 24, to provide the service life of nozzle 24.Incorporated by reference to Fig. 2, In the present embodiment, the nozzle overcoat 70 be located at the hollow no light zone 60 in, by by nozzle overcoat 70 as hollow nothing In light area 60, it can interfere so as to prevent nozzle overcoat 70 and focus on light beam 30 from being formed, it is to avoid light path is irradiated to influence cold But effect, and also contribute to reduce the energy loss of light path, improves capacity usage ratio.

Refer to Fig. 9 and combine Fig. 5, the first feeding channel 214 is provided with the lower bracing frame 211, first feeding Passage 214 is specially to be opened in bearing rib 2114.It is provided with the lower bracing frame 211 by first feeding channel 214 run through the feeding entrance 215 of the side of lower bracing frame 211, and the feeding entrance 215 is located at reflection focus lamp installation portion On 2112 circle end face 2118.It is provided with the jackshaft 25 in feeding guide groove 251, the nozzle 24 and is provided through institute State the second feeding channel 241 of nozzle 24, one end of the feeding guide groove 251 is connected with the first feeding channel 214, the other end with Second feeding channel 241 is connected.Pass through first feeding channel 214, feeding guide groove 251, the formation feeding of the second feeding channel 241 Channel system.First feeding channel 214 is entered by feeding entrance 215 by melt material, and passes through feeding guide groove 251 and second The cladding region that feeding channel 241 enters where focus 40, it is directly right by the feeding channel 241 of feeding guide groove 251 and second Connect so that the convenient flowing by melt material is smooth, leave after nozzle 24 in theory can be completely coaxial by melt material and light path, Leave and hollow no light zone 60 be introduced into by melt material after nozzle 24, close at focus 40 by under the two beams focus on light beam 30 Portion surrounds irradiation, is then heated and connects under the collective effect of molten bath heat transfer, the heat radiation on illumination Yu the surface of base material 80 etc. Continuous fusing and vertically into molten bath, treat that the surface of base material 80 of cladding is adjusted near the focus 40, fuse into the material in molten bath with The skin-material of base material 80 of part fusing is collectively forming relative movement of the melt in molten bath, molten bath with two light beams and base material 80 And continuous solidification forms molten road.

Refer to and the first protective gas passage 216 is set in Fig. 8, the lower bracing frame 211, the is set in the jackshaft 25 The 3rd protective gas passage 242, the second protective gas passage are provided with two protective gas passages 252, the nozzle 24 252 one end is docked with the first protective gas passage 216, and the other end is docked with the 3rd protective gas passage 242.Due to this implementation Nozzle overcoat 70 is provided with example, so, in the present embodiment, the nozzle overcoat is formed through in the nozzle overcoat 70 70 the 4th protective gas passage 77, the part of the 4th protective gas passage 77 be the inner fovea part 771 to be formed on base portion 71 (see Figure 12), it is formed by base portion 71 with coldplate muscle 73, and annular slab 78 is provided with the base portion 71, and the 4th protective gas leads to The another part in road 77 is located on the annular slab 78, and the protective gas passage 77 of another part the 4th is along the straight of annular slab 78 Footpath direction extends the groove 772 to be formed, and the inner face 781 and bottom face 782 of the insertion annular slab 78 of groove 772 are (see figure 13).The two ends of the 3rd protective gas passage 242 are respectively at the second protective gas passage 252, the 4th protective gas passage 77 Docking, the 4th protective gas passage 77, the second feeding channel 241 and hollow no light zone 60, focus 40 are coaxial.

Figure 14 and Figure 15 are referred to, the laser melting coating feed device shown in the present embodiment two and the laser shown in embodiment one The structure of cladding feed device is roughly the same, and distinctive points are：First, in the present embodiment, the focus on light beam 30 ' is three beams；2nd, Nozzle overcoat is not provided with the present embodiment on nozzle 24 '.Focus on light beam 30 ' is that three beams is realized especially by following structure：Adopted Spectroscope 22 ' includes three light splitting minute surfaces, and the light splitting minute surface is similarly plane or arc shaped surface, and the reflection used is focused on Mirror (not shown) is with embodiment one, and the spectroscope 22 ' and reflection focus lamp are coaxial, because spectroscope 22 ' has three points Light microscopic face, so incident beam 20 ' is divided into three beams the reflected beams 50 ' by the spectroscope 22 ', reflection focus lamp 23 ' is anti-by three beams Irradiating light beam 50 ' is focused into three beams focus on light beam 30 ', the hollow no light zone (non-label) of the formation of focus on light beam 30 ' and Jiao described in three beams Point (non-label).The fixture 2113 ' does not connect equally with upper support frame installation portion 2111 ', and is formed with confession between the two The annular hollow 2117 ' that focus on light beam 30 ' is passed through, annular hollow 2117 ' is divided into by the bearing rib 2114 ' to be gathered for three beams Three arcuate segments that defocused laser beam 30 ' is passed through.By the way that focus on light beam 30 ' is changed into three beams, light is focused on two beams in embodiment one Beam is compared so that reflection focus lamp 23 ' is more uniformly stressed, it is not easy to is deformed, and is easier to ensure that cladding precision and reliability.

Really, in other embodiments, the nozzle in the laser melting coating feed device with three light beam focus on light beam Upper be the same as Example one equally sets nozzle overcoat, or, the focus on light beam can be arranged to other quantity.

In summary：Above-mentioned laser melting coating feed device has the following advantages that：

1st, by be formed with the laser melting coating feed device cooling but medium circulation flowing with to support frame as described above 21, The light path cooling system that spectroscope 22 (22 '), reflection focus lamp 23 cool, so as to simultaneously to support frame 21, spectroscope 22 (22 '), reflection focus lamp 23 cool, and realize good cooling-down effect, and then can improve support frame 21, spectroscope 22 (22 '), reflection The service life of focus lamp 23.

2nd, by setting nozzle overcoat 70, and the nozzle cooling system cooled to nozzle 24 is set in nozzle overcoat 70 System, to reduce the temperature of nozzle 24, improves the life-span of nozzle 24；Nozzle overcoat 70 is arranged on hollow no light zone 60 simultaneously, made Nozzle cooling system staggers completely with light path, it is to avoid illumination is mapped to influence cooling effect.

3rd, by the way that support frame 21 and incident beam 20 (20 '), the reflected beams 50 (50 '), focus on light beam are staggered setting, To cause the support frame 21 not interfere with incident beam 20 (20 '), the reflected beams 50 (50 '), focus on light beam, light beam is reduced Energy loss, improves capacity usage ratio, in addition, pass through such a design, it is to avoid the region painting passed through in the prior art in light beam Light absorbent is plated, so as to help to reduce technology difficulty, helps to reduce cost.

4th, because light path is without feeding channel system, by melt material and will not be by light path by melt material relevant range Illumination effect, so that the unobstructed of feeding channel system has been effectively ensured, reduces feeding speed change, improve cladding layer shape Precision.

Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, the scope of this specification record is all considered to be.

Embodiment described above only expresses several embodiments of the present utility model, and it describes more specific and detailed, But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that for the common skill of this area For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to Protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.

Claims (10)

1. a kind of laser melting coating feed device, receives incident beam and the incident beam is converted into focus on light beam with base material Upper formation focus, it is poly- that the laser melting coating feed device includes support frame, the spectroscope being arranged on support frame as described above and reflection Incident beam is divided at least two beam the reflected beams by burnt mirror and the nozzle below the reflection focus lamp, the spectroscope, Again at least two beam focus on light beam, focus on light beam at least described in two beams are focused into by reflecting focus lamp by least two beam the reflected beams Form hollow no light zone and focus, it is characterised in that cooling but medium circulation stream is formed with the laser melting coating feed device The dynamic light path cooling system to cool to support frame as described above, spectroscope, reflection focus lamp.

2. laser melting coating feed device as claimed in claim 1, it is characterised in that the light path cooling system includes being opened in The first cooling duct that confession cooling medium in support frame as described above passes through, the confession cooling medium being opened in the spectroscope pass through The second cooling duct and the 3rd cooling duct that passes through of confession cooling medium that is opened in the reflection focus lamp, described first Cooling duct is connected respectively at the second cooling duct with the 3rd cooling duct.

3. laser melting coating feed device as claimed in claim 1 or 2, it is characterised in that in the laser melting coating feed device It is formed with cooling but nozzle cooling system of the medium circulation flowing to cool to the nozzle.

4. laser melting coating feed device as claimed in claim 3, it is characterised in that nozzle overcoat is arranged with the nozzle, The nozzle overcoat includes base portion, the nozzle installation through-hole through the base portion and in base portion towards the nozzle installation through-hole convex Stretch the coldplate muscle to be formed, the nozzle overcoat is covered on the nozzle by the nozzle installation through-hole, in the base portion Center-aisle is formed with, the coldplate muscle is located between center-aisle and the nozzle, and is posted by the nozzle, the base Be further opened with portion with the outlet of the cooling medium inlet and cooling medium of the center-aisle UNICOM, the nozzle cooling system by The center-aisle, cooling medium inlet, cooling medium outlet and coldplate muscle composition, the cooling medium flow through cooling successively Medium entrance, center-aisle and cooling medium outlet.

5. laser melting coating feed device as claimed in claim 4, it is characterised in that the nozzle overcoat is located at the hollow nothing In light area.

6. laser melting coating feed device as claimed in claim 4, it is characterised in that the laser melting coating feed device also includes Jackshaft, support frame as described above includes lower bracing frame, and the jackshaft is arranged in the lower bracing frame, and the jackshaft is located at institute The lower section of spectroscope and reflection focus lamp is stated, the nozzle is arranged on the jackshaft, and in the hollow no light zone, It is provided with the first feeding channel, the lower bracing frame to be provided with the lower bracing frame and institute is run through by first feeding channel State be provided with the feeding entrance of lower bracing frame side, the jackshaft in feeding guide groove, the nozzle be provided through it is described Second feeding channel of nozzle, one end of the feeding guide groove is connected with the first feeding channel, the other end and the second feeding channel Connection.

7. laser melting coating feed device as claimed in claim 6, it is characterised in that the first protection gas is set in the lower bracing frame Set in body passage, the jackshaft in the second protective gas passage, the nozzle and be provided with the 3rd protective gas passage, it is described One end of second protective gas passage is docked with the first protective gas passage, and the other end is docked with the 3rd protective gas passage.

8. laser melting coating feed device as claimed in claim 7, it is characterised in that nozzle overcoat is provided with the nozzle, The 4th protective gas passage of the nozzle overcoat is formed through in the nozzle overcoat, the 3rd protective gas passage Two ends are docked respectively at the second protective gas passage, the 4th protective gas passage, the 4th protective gas passage, the second feeding Passage and hollow no light zone, focus are coaxial.

9. laser melting coating feed device as claimed in claim 1, it is characterised in that the laser melting coating feed device also includes Jackshaft, support frame as described above includes lower bracing frame, and the jackshaft is arranged in the lower bracing frame, and the jackshaft is located at institute The lower section of spectroscope and reflection focus lamp is stated, the nozzle is arranged on the jackshaft, and in the hollow no light zone, Set in the first protective gas passage, the jackshaft and set in the second protective gas passage, the nozzle in the lower bracing frame The 3rd protective gas passage is provided with, one end of the second protective gas passage is docked with the first protective gas passage, another Docked with the 3rd protective gas passage at end.

10. laser melting coating feed device as claimed in claim 1, it is characterised in that the spectroscope and reflection focus lamp are same Axle, the spectroscope includes two light splitting minute surfaces, and the light splitting minute surface is plane or arc shaped surface；The reflection focus lamp has court To the focusing minute surface of light splitting minute surface, the focusing minute surface is a camber minute surface, or, the focusing minute surface is by multiple camber minute surfaces Constitute.