EP3551336A1 - Tête de pulvérisation de poudre électrostatique - Google Patents

Tête de pulvérisation de poudre électrostatique

Info

Publication number
EP3551336A1
EP3551336A1 EP17825362.1A EP17825362A EP3551336A1 EP 3551336 A1 EP3551336 A1 EP 3551336A1 EP 17825362 A EP17825362 A EP 17825362A EP 3551336 A1 EP3551336 A1 EP 3551336A1
Authority
EP
European Patent Office
Prior art keywords
powder
spray head
electrode
working space
transport direction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17825362.1A
Other languages
German (de)
English (en)
Other versions
EP3551336B1 (fr
Inventor
André SAIU
Pascal GAUCH
Peter Taiana
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Soudronic AG
Original Assignee
Soudronic AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Soudronic AG filed Critical Soudronic AG
Publication of EP3551336A1 publication Critical patent/EP3551336A1/fr
Application granted granted Critical
Publication of EP3551336B1 publication Critical patent/EP3551336B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/03—Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas, e.g. electrostatically assisted pneumatic spraying
    • B05B5/032—Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas, e.g. electrostatically assisted pneumatic spraying for spraying particulate materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/08—Plant for applying liquids or other fluent materials to objects
    • B05B5/081—Plant for applying liquids or other fluent materials to objects specially adapted for treating particulate materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/26—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets
    • B05B1/262—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors
    • B05B1/267—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors the liquid or other fluent material being deflected in determined directions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/06—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
    • B05B13/0618—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies only a part of the inside of the hollow bodies being treated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/053—Arrangements for supplying power, e.g. charging power
    • B05B5/0533—Electrodes specially adapted therefor; Arrangements of electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/08—Plant for applying liquids or other fluent materials to objects
    • B05B5/12—Plant for applying liquids or other fluent materials to objects specially adapted for coating the interior of hollow bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
    • B05D1/06—Applying particulate materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/2676—Cans or tins having longitudinal or helical seams

Definitions

  • the invention relates to a powder spray head for spraying a coating powder and a powder coating installation for coating a can body with powder according to the preambles of the independent claims.
  • Powder coating systems with powder spray heads for coating can bodies are known.
  • Such PulversprühkÜ are substantially rod-shaped and have such an outer diameter that a previously welded can frame can enclose them and is transported in a transport direction along the powder spray head. During this translatory movement, at least part of the inner surface of the can body is coated with powder. In particular, the weld seam of the can body is coated in this way to protect it against corrosion.
  • Powder coating is based on electrostatic charging of the powder particles.
  • a charging electrode is used, which has a negative high voltage relative to the zero potential lying on the frame. Due to the electrostatic charge of the powder particles, these are deflected in the direction of the can body and adhere to it.
  • a further so-called guide electrode is used, which is likewise subjected to a negative voltage. Consequently, the already negatively charged powder distribution These particles repel the negatively charged guide electrode, further promoting the deflection of the powder towards the can body.
  • a well-known powder coating plant of Soudronic from Bergdietikon, Switzerland includes, inter alia, a powder spray head in which the charging electrode and the guide electrode are designed as an electrode block. Presentation of the invention
  • a powder spray head for spraying a powder suitable for coating a can body, which powder spray head is designed such that for coating at least part of an inner surface of the can body, the can body to be coated encloses the powder spray head and along the powder spray head a transport direction is movable.
  • the powder spray head comprises in its interior a working space which has a working opening through which the powder can reach the inner surface of the can body. Furthermore, it comprises a powder tube for providing the powder, wherein the powder tube opens with a powder outlet in the working space of the powder spray head.
  • the powder tube is designed such that it emits the powder substantially in the transport direction in the working space.
  • the guide electrode and the charging electrode have the same polarity.
  • the charging electrode is arranged in the region of the powder outlet and extends in the form of a powder on the powder side (in the direction of the powder flowing through the powder outlet).
  • the arrangement at the powder outlet, where the powder enters the working space ensures that the action of the electric field on the powder flowing into the working space is increased.
  • the pointed configuration of the charging electrode causes a "concentration" of the electric field at the location where the powder flows through the powder outlet
  • the guide electrode is plate-shaped and a flat side of the guide electrode is directed towards the working space.
  • This configuration and orientation of the guide electrode allows a better detection of the powder located in the working space by the associated electric field of the guide electrode. Due to the plate-shaped configuration of the electrode, a more homogeneous electric field with substantially parallel field lines arises in the interior of the working space, similar to a plate capacitor, which causes as uniform a deflection of the powder from the guide electrode to the can body.
  • the configuration of the charging electrode and the guide electrode thus bring about an improved deflection of the powder in the desired direction in interaction, but also taken by itself. This allows the powder to be guided more efficiently to the can body.
  • electrostatic charging of the powder which is related to the particular arrangement and shape of the charging electrode, is not only relevant to the deflection of the powder, but also causes the powder to better adhere to the can body, in other words the separation efficiency is higher.
  • a can body of higher quality is produced, which is even more resistant to external influences, eg corrosion, caused by the later contents of the can.
  • the powder is charged evenly, regardless of the particle size.
  • the guide electrode preferably has such a first distance from the charging electrode that the electric field of the guide electrode acts on the powder electrostatically charged by means of the charging electrode immediately after the powder has entered the working space.
  • This arrangement of the guide electrode has the advantage that no or only a minimal proportion of the powder particles can flow in a direction other than the can body.
  • the powder coating system according to the invention for coating the can body with powder comprises a powder spray head according to the invention. Furthermore, it comprises a powder conveyor for supplying the powder spray head with powder. The powder conveyor can be connected to the powder tube to provide the powder. Finally, the powder coating plant comprises a powder recovery unit for extracting surplus powder produced during the coating. The powder recovery unit is arranged in the transport direction downstream of one or more suction nozzles of the powder spray head.
  • the powder coating system has the further advantage that the powder recovery unit can "collect” excess powder again, thereby saving powder.
  • the powder coating system according to the invention is advantageously used for coating a weld seam of the can body.
  • the powder spray head in the working space has at least one wing for guiding the electrostatically charged powder through the working opening to the part of the inner surface of the can frame to be coated. In this way, the powder can be better directed in the direction of the working opening.
  • a plurality of wings are provided, which are arranged in the working space in the transport direction one behind the other to capture as possible all powder particles. It is further preferred that the wing or the wings are bent in the direction of the working opening. Preferably, in the presence of several wings, these each have an ever larger effective area for the discharge of the electrostatically charged powder. This is another measure for detecting as many powder particles as possible, because the powder jet is more concentrated when it enters the work area and expands as it progresses. Consequently, the ever wider in the transport direction wings take this scattering.
  • FIG. 1 shows a perspective view of a powder coating system according to the invention with a powder spray head according to the invention
  • FIG. 2 is a detail view of a part A of the powder spray head of Fig. 1 in a sectional view
  • FIG. 3 is a side sectional view of the detail of Fig. 2, and FIG. 4 is a cross-sectional view of the powder spray head as viewed in the direction B of FIG. 3.
  • FIG. 4 is a cross-sectional view of the powder spray head as viewed in the direction B of FIG. 3.
  • plate-shaped means a flat piece of hard material, in this case metal, of flat, everywhere the same thickness, bounded on two opposite sides by a respective flat surface which is very extensive in relation to the thickness.
  • suitable in the context of powders defines any powder that would be used by a person skilled in the art for the coating of metal surfaces.
  • transport direction refers to a transport direction of the can bodies and is indicated by the arrow z, which also simultaneously designates the longitudinal axis of the powder spray head.
  • a "working space” refers to a recess in the powder spray head, in which the powder is deflected towards the can body.
  • electrically neutral in this context refers to a material that is neither electrically negative nor electrically positively charged or rechargeable.
  • axial and radial refer to a cylindrical coordinate system with the axis z. Accordingly, the term “front” refers to the direction of the arrow z and “back” to the opposite direction. The terms “bottom” and “top” refer to the direction of gravity.
  • FIG. 1 shows a powder coating system 1 according to the invention with a powder spray head 2 according to the invention in a perspective view.
  • the powder coating installation 1 comprises a powder conveying device 15 for supplying the powder spraying head 2 with powder, and a powder recovery unit 16 which sucks excess powder from the powder spray head.
  • a working opening of the powder spray head 2 is shown, can pass through the powder from a working space 11 to a can body 12.
  • 11 wings 3 are arranged in the working space.
  • Three suction nozzles 5 are arranged downstream of the working space 4.
  • the powder coating installation 1 of FIG. 1 further comprises a controller (not shown) with which, inter alia, the variables described above are set or monitored.
  • the controller is thus connected to the powder spray head 2 the powder conveyor 15 and the powder recovery unit 16.
  • FIG. 2 shows a detail view of a part A of the powder spray head 2 from FIG. 1 in a sectional view
  • FIG. 3 shows a side sectional view of the detail from FIG. 2.
  • a piece of powder tube 9 is shown ending with a powder outlet 9a.
  • the powder outlet 9a which like the powder tube 9 is made of an electrically neutral material, represents the mouth of the tube 9 in a working space 11.
  • the powder outlet 9a extends in the transport direction z in a conically expanding manner. This achieves a better distribution of the powder in the working space.
  • the charge electrode 6 is arranged in the region of the powder outlet 9a and runs on the powder side at an acute angle. shaped with a point 6a.
  • the charging electrode 6 is disposed below the powder outlet 9a. However, it could also be arranged in the z-direction further forward in the direction of the working space 11 or further back, which is illustrated by the term "in the region of the powder outlet.” It is preferably rod-shaped and its longitudinal axis is perpendicular to the transport direction z the charging electrode has its tip in an opening in a wall of the powder outlet 9a substantially as far as an inner surface of the powder outlet 9a, thereby ensuring that the charging electrode is located as close as possible to the powder, the position of the charging electrode 6 and in particular the pointed shape allow an increased electrostatic charging of the powder when it enters the work space 11.
  • the pointed configuration of the charging electrode 6 at its upper extremity means concentrating the associated electric field to a small area within the powder outlet 9a that rushing past Powder due to the higher electric field strength in the short time in which it flows past the charging electrode can be electrostatically charged more effectively than in previous solutions.
  • the powder spray head 2 comprises a guide electrode 7, which is plate-shaped.
  • a flat side 7a of the guide electrode is directed toward the working space. Due to the flat shape of the guide electrode 7 is achieved that a second electric field is generated, which is many times more extensive than the electric field of the charging electrode 6.
  • the orientation of the guide electrode 7 (surface 7a) causes the electric field lines to run in such a way that the already electrostatically negatively charged powder in the working space 11 is rejected by the guide electrode 7, which is also negatively charged.
  • the guide electrode 7 may also be formed of a plurality of pieces, in particular of a plurality of strips. Also a slightly convex or concave shape is conceivable as long as the working space facing side 7a of the guide electrode 7 has a large extent.
  • a powder particle has, on the one hand, a velocity component essentially in the (axial) transport direction z, which is predetermined by the powder conveying device 15. A deviation due to a radial scattering of the powder is neglected here for the sake of simplicity.
  • the powder particle has a velocity component in the radial direction (that is, perpendicular to the direction z) caused by the electric field of the guide electrode 7. The resulting directional vector of the powder particle thus depends on the input flow rate into the working space 11, the electrostatic charge through the charging electrode 6 and the strength of the electric field of the guide electrode 7.
  • particle size of the powder particle Another factor is the particle size of the powder particle.
  • this quantity is not discussed in the present context since the use of a conventional standard powder is assumed. Rather, the above sizes are varied to account for the particle size (and hence mass) of the powder. However, the choice of a different particle size for the powder is also conceivable.
  • the guide electrode 7 has such a first axial distance D1 (FIG. 3) from the charging electrode 6 in the transport direction that the electric field of the guide electrode 7 acts on the powder electrostatically charged by the charging electrode 6 immediately after the powder enters the working space 11. In this way it is avoided that due to their weight force powder particles get down a speed component and possibly fall to the bottom of the working space 11, which is undesirable.
  • the axial distance Dl depends on the factors mentioned above (inflow velocity into the working space 11, electrostatic charge and strength of the electric field of the guide electrode 7). It is conceivable (not shown) that the guide electrode 7 is designed to be displaceable in the z-direction in order to have a further degree of freedom in the case of the variation of one of the above parameters.
  • the guide electrode 7 is arranged outside the working space 11 and is preferably at least separated from it by means of an insulator 8. This prevents the guide electrode 7 from being coated with a powder layer over time due to the "dirty" working environment, which can occur, for example, as a result of turbulences or, in particular, when the electric field of the guide electrode 7 is switched off In the working space flying powder particles no longer experience force that would compensate for their own weight and thus fall down.A layer formed in this way would change the electrical properties of the guide electrode 7 by forming a dielectric powder layer, which is not desirable.
  • the guide electrode 7 has a greater distance from the longitudinal axis z of the powder spray head 2 than the tip 6a of the charging electrode 6 is arranged. This measure serves to not affect the electric field (corona effect) of the charging electrode, otherwise the powder particles are not charged.
  • the tip of the charging electrode must be as free as possible from other electric fields.
  • the guide electrode 7 preferably extends over the end of the working space 11 in the transport direction z. This ensures that the entire Powder along the entire longitudinal extent of the working space 11 (and in particular the working opening 4) is detected by the electric field of the guide electrode 7. This will be explained in more detail below in connection with blades 3 of the powder spray head 2.
  • three wings 3 are provided for guiding the electrostatically charged powder through the working opening 4 to the part of the inner surface of the can body 12 to be coated.
  • the wings 3 are made of an electrically neutral material and arranged in the working space 11 in the transport direction z one behind the other.
  • the powder is deflected by the wings 3 upwards (arrows 10a-d). Their task is therefore to support the deflection of the powder.
  • the number of blades 3 takes into account the fact that not all powder particles fly at the same speed in the z-direction and consequently their deflection also takes place differently.
  • the different speed of the powder particles is related to the collision of powder ponds in the powder stream, which changes their speed.
  • the powder stream is scattered on exiting the powder outlet, whereby the powder particles get different axial components of the velocity.
  • the varying mass of the powder particles also plays a role. For these reasons, some powder particles travel a longer distance in the work space than other powder particles. This is the reason why the guide electrode 7 preferably extends to the end of the work space 11.
  • the wings 3 are bent in the direction of the working opening 4, in order to allow as laminar a flow of the powder as possible past them.
  • a laminar flow is fundamentally desirable in order to ensure as uniform a powder application on the inner surface of the can body 12 as possible. This will avoid the time spent on the The distance of the powder particles is not prolonged by any turbulence, while for other powder particles no such delay occurs.
  • the shape of the working space 11 per se can be made different in this respect from that in the exemplary figures. In this context, it can also be seen from FIGS. 2 and 3 that the front wall of the working space 11 (in the case of the arrow 10d), viewed in the transporting direction z, has the same or similar shape as the blades 3.
  • the wings 3 in the transport direction z have a second axial distance D2 from the charging electrode 6, which is greater than the first distance Dl.
  • the second axial distance D2 is understood as the distance from a starting point of a first blade 3, which is closest to the charging electrode 6, to a z position of the charging electrode 6.
  • This measure is used because, by design, the powder arrives in "drawers" in the working space 11.
  • the powder flow does not have a constant density over time, but the density is approximately sinusoidal In the "extensive" region up to the wings, the working space 11 effectively causes a thinning of the density of the powder flow, so that it has as constant a density as possible on the can body 12 arrives.
  • FIG. 4 shows a cross-sectional view of the powder spray head 2, seen in the direction B of Fig. 3, that is opposite to the transport direction z of the can body 12.
  • two sealing lips 14 are shown, which were not drawn for reasons of clarity in the previous figures. These sealing lips 14 are attached to a contour of the working opening 4. This may be a single sealing lip or multiple sealing lips.
  • a free end of the sealing lip 14 rests on the inner wall of the can body 12 when a can body 12 is present, so that only the part of the inner wall of the can body 12 to be coated can come into contact with the powder.
  • the coating should be applied to the welding seam 12a as protection against corrosion, as mentioned above.
  • the work opening 4 is correspondingly slit-shaped in order to expose only the surroundings of the weld seam 12a.
  • the sealing lips 14 bear against the inner wall of the can body 12, laterally of the weld seam, so that no coating powder can reach other areas of the inner wall and thus only the desired area is coated.
  • the working opening 4 and / or the sealing lips 14 may have a different shape, depending on what should be coated. Accordingly, the shape and extent of the guide electrode can vary according to the shape of the work opening 4.
  • the powder spray head 2 comprises a high voltage generator (not shown) which is designed to generate a controllable negative voltage between 8 and 40 kV between the charging electrode 6 and the can body 12, which is earthed.
  • the generator can also be designed such that it also between see the guide electrode 7 and the can body 12 generates a controllable negative voltage between 8 and 40 kV.
  • two different generators can be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

L'invention concerne une tête de pulvérisation de poudre (2) servant à pulvériser une poudre sur un corps (12) de boîte de conserve à revêtir. La tête de pulvérisation de poudre comprend un espace de travail (11) à l'intérieur de la tête de pulvérisation de poudre (2), une tuyau à poudre (9) servant à fournir la poudre, une électrode de charge (6) servant à soumettre la poudre à l'action d'une charge électrostatique et une électrode de guidage (7) servant à dévier la poudre chargée électrostatiquement sensiblement en direction de l'ouverture de travail (4). L'électrode de charge (6) est disposée dans la zone de la sortie de poudre (9a) et s'étend en forme de pointe (6a) en direction de la poudre affluant dans l'espace de travail (11). En supplément ou en variante, l'électrode de guidage (7) est en forme de plaque, et un côté (7a) plat de l'électrode de guidage (7) est dirigé en direction de l'espace de travail (11).
EP17825362.1A 2017-03-30 2017-12-14 Tête de pulvérisation électrostatique Active EP3551336B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00430/17A CH713662A2 (de) 2017-03-30 2017-03-30 Pulversprühkopf und Pulverbeschichtungsanlage mit einem solchen.
PCT/CH2017/000103 WO2018176164A1 (fr) 2017-03-30 2017-12-14 Tête de pulvérisation de poudre électrostatique

Publications (2)

Publication Number Publication Date
EP3551336A1 true EP3551336A1 (fr) 2019-10-16
EP3551336B1 EP3551336B1 (fr) 2020-10-21

Family

ID=60935618

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17825362.1A Active EP3551336B1 (fr) 2017-03-30 2017-12-14 Tête de pulvérisation électrostatique

Country Status (8)

Country Link
US (1) US20200360942A1 (fr)
EP (1) EP3551336B1 (fr)
CN (1) CN110325285B (fr)
CH (1) CH713662A2 (fr)
ES (1) ES2828068T3 (fr)
PT (1) PT3551336T (fr)
TW (1) TWI749148B (fr)
WO (1) WO2018176164A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111054917A (zh) * 2019-12-16 2020-04-24 汕头大学 一种多材料固态增材制造系统和方法
CN113304903B (zh) * 2021-07-29 2021-09-21 佛山市粤纯钢机电设备工程有限公司 一种静电粉末多功能喷射装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003051621A1 (fr) * 2001-12-19 2003-06-26 Kikusui Seisakusho Ltd. Machine a mouler par carrousel par compression a l'aide de poudres
EP1641568B1 (fr) * 2003-07-07 2008-05-21 Soudronic AG Procede de revetement d'objets, systeme d'electrode et dispositif de revetement
FR2941877B1 (fr) * 2009-02-09 2011-04-08 Sames Technologies Projecteur electrostatique comportant un dispositif de detection de vitesse de rotation
CN202316168U (zh) * 2011-11-17 2012-07-11 中冶京诚工程技术有限公司 环形放电喷嘴
FR3000414B1 (fr) * 2012-12-28 2015-07-10 Centre Nat Rech Scient Chargeur d'aerosol concentrique par decharge electrique
CN204848727U (zh) * 2015-07-03 2015-12-09 天津恒圣迦南建筑材料有限公司 一种导静电粉末涂料制备装置
CN205731702U (zh) * 2016-05-12 2016-11-30 广东正英科技有限公司 一种机械臂用粉末静电喷枪
CN106259274A (zh) * 2016-10-13 2017-01-04 广西大学 一种粉末喷洒机

Also Published As

Publication number Publication date
ES2828068T3 (es) 2021-05-25
PT3551336T (pt) 2020-12-11
CN110325285A (zh) 2019-10-11
EP3551336B1 (fr) 2020-10-21
TWI749148B (zh) 2021-12-11
US20200360942A1 (en) 2020-11-19
CH713662A2 (de) 2018-10-15
TW201838719A (zh) 2018-11-01
WO2018176164A1 (fr) 2018-10-04
CN110325285B (zh) 2021-07-09

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