CN206168609U - Thermoplastic powder is spray gun shower nozzle for spray fusing - Google Patents

Abstract

The utility model provides a thermoplastic powder is spray gun shower nozzle for spray fusing, the utility model discloses a plastic powders is difficult for dispersed melting and provides a thermoplastic powder is spray gun shower nozzle for spray fusing in solving prior art. The utility model discloses having the powder and carrying section, powder melt zone and liquid drop blowout section, the powder carries the section to link to each other with the powder melt zone, and the powder melt zone links to each other with liquid drop blowout section, and the powder carries the section to have air current through -hole and air flow nozzle, and the powder melt zone has chamber wall, heater and is enclosed by chamber wall and heater and close the melting cavity that forms, fused thermoplastic spouts via the hydrojet head. The beneficial effects of the utility model are that: messenger plastic powders can melting in the powder melt zone to spout into even liquid phase plastic granules through liquid drop blowout section, can realize melting plastic powders's homodisperse, and avoid plastic powders because of defects such as the flame firing is discolourd, the variability, burnings.

Description

A kind of thermoplastic powder spray fusing spray gun spray nozzle

Technical field

The present invention relates to material processing field, and in particular to a kind of thermoplastic powder spray fusing spray gun spray nozzle.

Background technology

Plastics have become most frequently used class material in people's daily life, as technological progress is constantly changed The plastics for entering are widely used in manufacture of building subassembly, food containers, life appliance, electric appliance casing, aerospace craft etc., and near Nian Lai, plastics more start to be used for the occasions such as the manufacture of functional composite material.The meeting in functional composite material processing and manufacturing Using to the less plastic powders of particle, also just because plastic powders particle is small, therefore in actual use often cannot be according to Application target is mated formation.The reason for plastic powders are understood because of gravity in the preparation of composite is deposited on composite raw material The bottom of mixture, and cause material skewness and then the mechanical property and apparent mass of material may be influenceed.Make plastics Powder is mated formation as required, and realize powder particle it is dispersed, control mat formation after the completion of plastics pave-load layer thickness, be work as The preceding major issue for needing to solve.

Although plastic powders are ejected into material surface using dust gun can solve uniform problem of mating formation, when multiple Further mixing can similarly cause powder precipitation and the problem piled up to the raw material of condensation material, can still cause inequality of mating formation It is even.Plastic powders are heated to molten condition and are ejected into workpiece surface by the flame formed using burning gases, so as to form painting The technological means of layer, although can be achieved to a certain extent plastic powders and mat formation on demand, but the coating for now being formed point Scattered property is bad, and the lamella for ultimately forming has deviated from using the original intention of plastic powders, and the direction due to flame and the bad control of temperature System, it may appear that plastic powders burning produces the defect of peculiar smell or discoloration denaturation, influences the quality of product.

Plastic powders are heated to molten condition and are ejected into by the flame for therefore being formed using burning gases in the prior art The mode of workpiece surface can not directly apply to the manufacture of composite, and one kind is lacked in the prior art makes the plastic powders can be with It is dispersed while the defect such as discoloration, denaturation, burning that plastic powders can be avoided to occur by centralized head load or flame Thermoplastic powder spray fusing spray gun spray nozzle.

The content of the invention

The present invention proposes a kind of thermoplastic powder spray fusing to solve a series of problems present in prior art With spray gun spray nozzle, there is the thermoplastic powder spray fusing spray gun spray nozzle powder conveying section, powder melts section and drop to spray Section, the powder conveying section is connected with powder melts section, and the powder melts section sprays section and is connected with drop, the powder Transportation section has air-flow through hole and air current spray nozzle, and the powder melts section has cavity wall, heater and by the cavity wall and heating The melting cavity that device is enclosed；The air-flow through hole is connected by air current spray nozzle with the melt chamber body phase of powder melts section； The drop sprays section tool connecting portion and jet head, and one end of the melting cavity is connected with the connecting portion, the connecting portion It is connected with the jet head, the thermoplastic of melting sprays through jet head.The beneficial effects of the invention are as follows：By being respectively provided with Powder conveying section, powder melts section and drop spray section allows plastic powders melting in powder melts section, and by drop Spray section and be emitted into uniform liquid phase plastic grain, can be realized when face of mating formation freezes uniformly when liquid phase plastic grain is arrived at Dispersion, and avoid the defects such as plastic powders discoloration, denaturation, burning.

Further, the air-flow through hole has primary air road, expands circulation road, volume suction spout, attached wall curved surface and advection chamber, institute State volume and inhale spout located at the primary air road and the intersection of the expansion circulation road, the volume inhales spout and the attached wall curved surface phase Neighbour, the attached wall curved surface encloses the advection chamber, and the advection chamber is connected with the air current spray nozzle.

Further, the powder conveying section is made up of air inlet component and mixed gas part, the air inlet component and the mixed gas Parts nest is connected, and the powder conveying section is connected by the mixed gas part with powder melts section；The intake section Part is provided with primary air road entrance and expands flow channel inlet, has primary air chamber between the mixed gas part and the air inlet component And volume inhales spout, air passes through primary air road entrance and enters primary air chamber and inhale spout ejection by rolling up, during air-flow sprays The air expanded near flow channel inlet is by the Air Entrainment of ejection in primary air chamber；On the mixed gas part spout is inhaled with the volume Adjacent is provided with attached wall curved surface, and air and the air inhaled by volume enter the mixed gas part along the attached wall curved surface, and through described Moved to air current spray nozzle direction in the advection chamber that attached wall curved surface is enclosed.

Further, the cavity wall is connected by reinforcing member with heater, and anti-scald interlayer is also wrapped on outside the cavity wall.

Further, the air current spray nozzle is parallel airflow nozzle；The air is the mixing air containing plastic powders.

Further, the air current spray nozzle is provided with advection drainage plate, and the advection drainage plate is multiple, and each advection drainage Plate is parallel to each other.

Further, the heater is that combustion heater, fuel heater, laser heater, infrared heater, electromagnetism add One or more of combination in hot device and resistance heater.

Further, the heater is controllable temperature resistance heating wire, and the temperature range of the heater heating is Celsius 150 Spend to 600 degrees Celsius.

Further, the jet head has connecting leg and spray nozzle, and the connecting leg is threadedly coupled with the connecting portion.

Further, the spray nozzle is conical spray nozzle, and the conical spray nozzle is provided with regulating valve, and regulation is described Regulating valve can change the shape of the conical spray nozzle, and then change sprayed liquid level width.

A kind of application method of thermoplastic powder spray fusing spray gun spray nozzle, comprises the following steps：

The first step, by the powder of external air and powder conduit and the thermoplastic powder spray fusing spray gun spray nozzle Air-flow through hole on last transportation section is connected；

Second step, connects the power supply of powder melts section, is that the heater of powder melts section is preheated, control heater Temperature is 150 degrees Celsius to 600 degrees Celsius；

3rd step, starts high-pressure powder container, pushes air and powder to air-flow through hole；

4th step, air and powder spray to powder melts section through air current spray nozzle, and heated device acts on melting cavity Turn to plastics drop；

5th step, the plastics drop sprays through jet head, through heat transfer cooling solidify afterwards.

Further, air-flow through hole described in the first step has primary air road and expands circulation road, the primary air road and high pressure Powder container is connected by pipeline；Start high-pressure powder container in 3rd step, push air and powder to primary air road, and through inhaling Volume spout drives the air expanded in circulation road to enter advection chamber through attached wall curved surface with powder.

Further, before air sprays to powder melts section with powder through flow nozzle in the 4th step, first pass through multiple flat The drainage of the advection drainage plate that row is set.

Brief description of the drawings

Fig. 1 is principle schematic of the invention；

Fig. 2 is structural representation of the invention；

Fig. 3 is partial sectional view of the invention；

Fig. 4 is generalized section of the invention；

Fig. 5 is part principle schematic of the invention；

Fig. 6 is the dissection schematic diagram of another angle of the invention；

Fig. 7 is the schematic diagram that the present invention installs anti-scald interlayer additional；

Fig. 8 is structure decomposition figure of the invention.

Each several part implication is as follows in figure：1 powder conveying section；11 air-flow through holes；12 air current spray nozzles；121 advection drainage plates；13 Primary air road；131 primary air road entrances；132 primary air chambers；14 expand circulation road；141 expand flow channel inlet；The suction spouts of volume 15；16 Attached wall curved surface；17 advection chambers；18 air inlet components；19 mixed gas parts；2 powder melts section；21 cavity walls；22 heaters；23 melt chambers Body；24 reinforcing members；25 anti-scald interlayers；3 drops spray section；31 connecting portions；32 jet heads；321 connecting legs；322 spray nozzles.

Specific embodiment

Specific embodiment of the invention is illustrated below in conjunction with the accompanying drawings.

Specific embodiment 1：With reference to Fig. 1 and Fig. 2 explanation present embodiments, a kind of thermoplastic described in present embodiment Powder spray fusing spray gun spray nozzle, with powder conveying section 1, powder melts section 2 and drop spray section 3 it is characterized in that：The powder Last transportation section 1 is connected with powder melts section 2, and the powder melts section 2 sprays section 3 and is connected with drop, the powder conveying Section 1 has air-flow through hole 11 and air current spray nozzle 12, and the powder melts section 2 has cavity wall 21, heater 22 and by the cavity wall 21 and the melting cavity 23 that encloses of heater 22；The air-flow through hole 11 is by air current spray nozzle 12 and powder melts section 2 melting cavity 23 is connected；The drop sprays section 3 tool connecting portion 31 and jet head 32, one end of the melting cavity 23 with The connecting portion 31 is connected, and the connecting portion 31 is connected with the jet head 32, and the thermoplastic of melting sprays through jet head 32 Go out.

Present embodiment has the technical effect that：Section is sprayed by being respectively provided with powder conveying section, powder melts section and drop Allow plastic powders melting in powder melts section, the inlet of temperature and air in the melt zone, each clock gas Ratio, the flow direction of gas etc. are controllable, therefore can avoid the defects such as plastic powders discoloration, denaturation, burning；Due to by drop Spray section be emitted into uniform liquid phase plastic grain, when liquid phase plastic grain is arrived at can when face of mating formation freezes into plastic grain Realize the dispersed of plastic grain.

Specific embodiment 2：Present embodiment, a kind of heat described in present embodiment are illustrated with reference to Fig. 2, Fig. 3, Fig. 4 and Fig. 5 Thermoplastic plastic powder spray fusing spray gun spray nozzle, the air-flow through hole 11 has primary air road 13, expands circulation road 14, volume suction spout 15th, attached wall curved surface 16 and advection chamber 17, the volume inhale spout 15 located at the primary air road 13 and the friendship for expanding circulation road 14 At remittance, the volume suction spout 14 is adjacent with the attached wall curved surface 16, and the attached wall curved surface 16 encloses the advection chamber 17, described Advection chamber 17 is connected with the air current spray nozzle 12；Other are identical with specific embodiment 1.

Present embodiment has the technical effect that：Primary air road 13 is set by powder conveying section, expands circulation road 14, volume suction Spout 15, attached wall curved surface 16 and advection chamber 17 so that the air expanded around circulation road 14 when primary air road 13 is ventilated can be because volume Inhaling spout 15 and the volume of air is inhaled makes the flow velocity of air therefore expanded, and the air and plastic powders inhaled by volume can be bent along attached wall Face 16 is moved, and because air driven plastic powders enter advection chamber so that not only plastic powders in the present embodiment Transfer efficiency is improved, and is more allow air that advection occurs and is exported, and then controls the transmission direction of plastic powders, makes plastic powders not Can assemble in powder melts section 2, it also avoid adhesion of the plastic powders in cavity wall and heater.

Specific embodiment 3：Present embodiment, a kind of heat described in present embodiment are illustrated with reference to Fig. 4, Fig. 5, Fig. 6 and Fig. 7 Thermoplastic plastic powder spray fusing spray gun spray nozzle, the powder conveying section 1 is made up of air inlet component 18 and mixed gas part 19, it is described enter Gas part 18 and the mixed nested encryptions of gas part 19, and the powder conveying section 1 passes through the mixed gas part 19 and the powder Last melt zone 2 is connected；The air inlet component 18 is provided with primary air road entrance 131 and expands flow channel inlet 141, the mixed gas portion There is primary air chamber 132 and volume to inhale spout 15, air is entered by primary air road entrance 131 between part 19 and the air inlet component 18 Become owner of air flow chamber 132 and sprayed by rolling up suction spout 15, the air that air-flow expands near flow channel inlet 141 during spraying is led The Air Entrainment sprayed in air flow chamber；The adjacent of spout 15 is inhaled with the volume be provided with attached wall curved surface 16 on the mixed gas part 19, Air and the air inhaled by volume enter the mixed gas part 19 along the attached wall curved surface 16, and are enclosed through the attached wall curved surface 16 Advection chamber 17 moved to the direction of air current spray nozzle 12；Other are identical with any one of specific embodiment 1-2.

Present embodiment has the technical effect that：By in powder conveying section, air inlet component 18 and mixed gas part 19 are set, and Primary air road entrance 131 is set on air inlet component 18 and expands flow channel inlet 141, make thermoplastic powder spray fusing spray gun Shower nozzle preferably can be connected with external equipment, and due to the setting in primary air chamber 132, make the transfer capability of powder delivery section more By force；Air is sprayed by primary air road entrance 131 into primary air chamber 132 and by rolling up suction spout 15, during air-flow sprays The Air Entrainment that the air expanded near flow channel inlet 141 is sprayed in primary air chamber, with the volume on the mixed gas part 19 Inhale the adjacent of spout 15 and be provided with attached wall curved surface 16, air and the air inhaled by volume enter the mixed gas portion along the attached wall curved surface 16 Part 19, and moved to the direction of air current spray nozzle 12 through the advection chamber 17 that the attached wall curved surface 16 is enclosed, put down air Stream output, and then the transmission direction of plastic powders is controlled, plastic powders is not assembled in powder melts section 2, the sky of acceleration Gas air-flow is served as equipment carries out self-cleaning effect, it is to avoid adhesions of the plastic powders in cavity wall and heater.

Specific embodiment 4：With reference to Fig. 4 and Fig. 7 explanation present embodiments, a kind of thermoplastic described in present embodiment Powder spray fusing spray gun spray nozzle, the cavity wall 21 is connected by reinforcing member 24 with heater 22, is also wrapped on outside the cavity wall 21 Anti-scald interlayer 25；Other are identical with any one of specific embodiment 1-3.

Present embodiment has the technical effect that：It is fixed heater；Anti-scald interlayer is set outside cavity wall can be prevented User is scalded during use.

Specific embodiment 5：Present embodiment, a kind of thermoplasticity described in present embodiment are illustrated with reference to Fig. 3, Fig. 4 and Fig. 5 Plastic powders spray fusing spray gun spray nozzle, the air current spray nozzle 12 is parallel airflow nozzle；The air is to contain plastic powders Mixing air；Other are identical with any one of specific embodiment 1-4.

Present embodiment has the technical effect that：Plastic powders and powder are further prevented due to being provided with parallel airflow nozzle The relevant devices such as last melt zone cavity wall, heater carry out making contact, prevent plastics to be bonded on melting cavity；Air is to contain modeling The mixing air at feed powder end, can make plastic powders dispersed in atmosphere, it is also possible to plastic powders is easier in powder Melt zone is more rapidly melted, it is to avoid plastic powders stick together in melting process, it also avoid plastic powders with The adhesion about device such as powder melts section cavity wall, heater.

Specific embodiment 6：Present embodiment, a kind of thermoplastic powder described in present embodiment are illustrated with reference to Fig. 4 Spray fusing spray gun spray nozzle, the air current spray nozzle 12 is provided with advection drainage plate 121, and the advection drainage plate 121 is multiple, and respectively Advection drainage plate 121 is parallel to each other；Other are identical with any one of specific embodiment 1-5.

Present embodiment has the technical effect that：Due to being provided with multiple advection drainage plates being parallel to each other, further prevent The relevant devices such as plastic powders and powder melts section cavity wall, heater carry out making contact, prevent the plastics to be bonded at melting cavity On.

Specific embodiment 7：Present embodiment is illustrated with reference to Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 8, one described in present embodiment Thermoplastic powder spray fusing spray gun spray nozzle is planted, the heater 22 is combustion heater, fuel heater, LASER HEATING One or more of combination in device, infrared heater, electromagnetic heater and resistance heater；Other and specific embodiment 1-6 Any one of it is identical.

Present embodiment has the technical effect that：As a result of the heater with higher performance, make plastic powders in powder In the melt chamber body of last melt zone molten condition can be effectively heated to rapidly.

Specific embodiment 8：Present embodiment, a kind of heat described in present embodiment are illustrated with reference to Fig. 3, Fig. 4, Fig. 6 and Fig. 8 Thermoplastic plastic powder spray fusing spray gun spray nozzle, the heater 22 is controllable temperature resistance heating wire, the heating of the heater 22 Temperature range is in 150 to 600 facilities degree centigrade；Other are identical with any one of specific embodiment 1-7.

Present embodiment has the technical effect that：Due to being heated using resistance heating wire, heating operation is set more to facilitate, Make heated perimeter and heat time more flexibly controllable；The resistance heating wire can control temperature range to be arrived at 150 degrees Celsius 600 facility degree, can facilitate different types of plastic molting.

Specific embodiment 9：With reference to Fig. 6 and Fig. 7 explanation present embodiments, a kind of thermoplastic described in present embodiment Powder spray fusing spray gun spray nozzle, has connecting leg 321 and spray nozzle 322, the connecting leg 321 and the connection in the jet head 32 Portion 31 is threadedly coupled；Other are identical with any one of specific embodiment 1-8.

Present embodiment has the technical effect that：Because the connecting leg 321 is threadedly coupled with the connecting portion 31, make the spray Liquid head can be changed flexibly as needed, can be as needed when the plastics kind of spray fusing or the object of spray fusing change More preferable nozzle and whole thermoplastic powder spray fusing spray gun spray nozzle need not be changed.

Specific embodiment 10：With reference to Fig. 6 and Fig. 8 explanation present embodiments, a kind of thermoplasticity modeling described in present embodiment Feed powder end spray fusing spray gun spray nozzle, the spray nozzle 322 is conical spray nozzle, and the conical spray nozzle is provided with regulation Valve, adjusting the regulating valve can change the shape of the conical spray nozzle, and then change sprayed liquid level width；Other It is identical with any one of specific embodiment 1-9.

Present embodiment has the technical effect that：Due to being provided with regulating valve on the conical spray nozzle, make what is sprayed Liquid level width can change, and allow the plastic grain sprayed through thermoplastic powder spray fusing spray gun spray nozzle and be combined The raw material of material mixes evenly, or can regulating liquid surface width and then guarantee operating efficiency raising as needed.

Claims (10)

1. a kind of thermoplastic powder spray fusing spray gun spray nozzle, with powder conveying section（1）, powder melts section（2）And drop Spray section（3）, it is characterised in that：The powder conveying section（1）With powder melts section（2）It is connected, the powder melts section （2）Section is sprayed with drop（3）It is connected, the powder conveying section（1）With air-flow through hole（11）And air current spray nozzle（12）, the powder Last melt zone（2）With cavity wall（21）, heater（22）And by the cavity wall（21）And heater（22）The melting for enclosing Cavity（23）；The air-flow through hole（11）By air current spray nozzle（12）With powder melts section（2）Melting cavity（23）Phase Even；The drop sprays section（3）Tool connecting portion（31）And jet head（32）, the melting cavity（23）One end and the connection Portion（31）It is connected, the connecting portion（31）With the jet head（32）Connection, the thermoplastic of melting is through jet head（32）Spray Go out.

2. a kind of thermoplastic powder spray fusing spray gun spray nozzle according to claim 1, it is characterised in that：The air-flow leads to Hole（11）With primary air road（13）, expand circulation road（14）, volume inhale spout（15）, attached wall curved surface（16）With advection chamber（17）, institute State volume and inhale spout（15）Located at the primary air road（13）With the expansion circulation road（14）Intersection, the volume inhales spout（15） With the attached wall curved surface（16）It is adjacent, the attached wall curved surface（16）Enclose the advection chamber（17）, the advection chamber（17）With The air current spray nozzle（12）It is connected.

3. a kind of thermoplastic powder spray fusing spray gun spray nozzle according to claim 1, it is characterised in that：The powder is defeated Send section（1）By air inlet component（18）With mixed gas part（19）Composition, the air inlet component（18）With the mixed gas part（19）It is embedding Set connection, and the powder conveying section（1）By the mixed gas part（19）With powder melts section（2）It is connected；It is described enter Gas part（18）It is provided with primary air road entrance（131）With expansion flow channel inlet（141）, the mixed gas part（19）With it is described enter Gas part（18）Between have primary air chamber（132）And volume inhales spout（15）, air is by primary air road entrance（131）Into master Air flow chamber（132）And inhale spout by rolling up（15）Spray, air-flow expands flow channel inlet during spraying（141）Neighbouring air quilt The Air Entrainment sprayed in primary air chamber；The mixed gas part（19）On with the volume inhale spout（15）It is bent that adjacent is provided with attached wall Face（16）, air and by volume inhale air along the attached wall curved surface（16）Into the mixed gas part（19）, and through the attached wall Curved surface（16）The advection chamber for enclosing（17）To air current spray nozzle（12）Move in direction.

4. a kind of thermoplastic powder spray fusing spray gun spray nozzle according to claim 3, it is characterised in that：The cavity wall （21）By reinforcing member（24）With heater（22）It is connected, the cavity wall（21）Anti-scald interlayer is also wrapped on outward（25）.

5. a kind of thermoplastic powder spray fusing spray gun spray nozzle according to claim 3, it is characterised in that：The air-flow spray Mouth（12）It is parallel airflow nozzle；The air is the mixing air containing plastic powders.

6. a kind of thermoplastic powder spray fusing spray gun spray nozzle according to claim 5, it is characterised in that：The air-flow spray Mouth（12）It is provided with advection drainage plate（121）, the advection drainage plate（121）It is multiple, and each advection drainage plate（121）Mutually It is parallel.

7. a kind of thermoplastic powder spray fusing spray gun spray nozzle according to any one of claim 1-6, it is characterised in that： The heater（22）It is combustion heater, fuel heater, laser heater, infrared heater, electromagnetic heater and resistance One or more of combination in heater.

8. a kind of thermoplastic powder spray fusing spray gun spray nozzle according to any one of claim 1-6, it is characterised in that： The heater（22）It is controllable temperature resistance heating wire, the heater（22）The temperature range of heating is in 150 to 600 degree.

9. a kind of thermoplastic powder spray fusing spray gun spray nozzle according to any one of claim 1-6, it is characterised in that： The jet head（32）With connecting leg（321）And spray nozzle（322）, the connecting leg（321）With the connecting portion（31）Screw thread connects Connect.

10. a kind of thermoplastic powder spray fusing spray gun spray nozzle according to claim 9, it is characterised in that：The hydrojet Mouth（322）It is conical spray nozzle, the conical spray nozzle is provided with regulating valve, adjusting the regulating valve can change described The shape of conical spray nozzle.