CN2154778Y

CN2154778Y - Jet printer

Info

Publication number: CN2154778Y
Application number: CN 93209389
Authority: CN
Inventors: 张秀传; 王兴甫
Original assignee: No31 Inst No3 Research Inst Ministry Of Aeronautics And Astronautics Indus
Current assignee: No31 Inst No3 Research Inst Ministry Of Aeronautics And Astronautics Indus
Priority date: 1993-04-17
Filing date: 1993-04-17
Publication date: 1994-02-02
Anticipated expiration: 2003-04-17

Abstract

The utility model relates to a jet printer comprising an ink furnishing unit and a supersonic injection head, which is characterized in that the ink furnishing unit comprises an ink furnishing cylinder which passes through an ink filter to the supersonic nozzle, wherein, miniature ink droplets formed by supersonic waves are electrified and form required characters after passing a high-pressure deflection plate. The utility model has the advantages of reasonable structure, strong adaptability, low cost and high practicability and does not need expensive skills and processes, meeting the printing demands of various products of automatic production lines.

Description

Jet printer

The utility model relates to a kind of spray printing machine, is used for ink is sprayed on the selected surface of product with character style.It generally includes ink-feeding device and ultrasonic wave shower nozzle etc.

Above-mentioned spray printing machine all is by the product of abroad buying, and costs an arm and a leg, and makes complicatedly, and for the reason of market competition, also is difficult to find physical resource.

For this reason, the purpose of this utility model is to provide a kind of improved spray printing machine, and it is rational in infrastructure, make and simplify, thereby economy obviously improves.

The utility model is to realize above-mentioned purpose like this, and a kind of spray printing machine comprises ink-feeding device and ultrasonic wave shower nozzle, it is characterized in that:

Described ink-feeding device comprises the closed cylinder of a bearing certain pressure, and ink bottle is housed in the cylindrical shell, settles two pipelines usually in the upper end, and one is air inlet pipe, and one is the China ink pipe, and it is connected to the ultrasonic wave shower nozzle; This ultrasonic wave shower nozzle comprises: a common cylindrical sprayer body is installed on the supporting member, the nail of pressure is arranged in the sprayer body, it is pressed the tubular gland and puts on the shoulder of the other end undergauge hole of sprayer body center through hole, in gland, be equipped with general columniform ultrasound piezoelectric element, it stretches into the undergauge hole becomes a part and is dipped in the liquid China ink, sprayer body with support distal from the end be equipped with the gland of a band nozzle aperture, form a short cylindrical shape cavity volume that is full of the liquid China ink between aperture and piezoelectric element end face, in sprayer body, be equipped with its internal circular surfaces of a transfer passage and pass to external body and go out the China ink pipe and link to each other from described undergauge hole; Below nozzle successively and keep at a certain distance away and settle charging device and high-voltage deflection device; The nozzle aperture is generally circular aperture, through the ultrasonic wave effect, makes the liquid China ink fragment into the uniform fine droplet of diameter after the aperture ejection; Then, the liquid of these the miniature ink droplets device that overcharges of flowing through, this charging device comprises the charging utmost point and charging signals, charging is a slot type electrode very, charging signals is the sequencing pulsating volage that is provided by a control device, and the program in this control device is according to the requirement of printable character and custom-designed; Therefore, just be with corresponding charge through little ink droplet of the utmost point that overcharges; These charged little ink droplets are by the high-voltage deflection device, and it is made up of the positive and negative pole plate that is applied with high direct voltage, and like this, under the electric field force effect, charged droplets stream is done correspondingly deflection to become the character that will print.

A preferred version is: settle a black hydraulic control valve such as ball valve and at least one black liquid filter between ink supply tube and ultrasonic wave shower nozzle.

Another preferred version is to settle two (first order and the second level) black liquid filters between control valve and ultrasonic wave shower nozzle, and settle a pressure indicator between two filters.

Another preferred version is, below the high-voltage deflection device, settle a black liquid retracting device over against the injection direction of deflected droplets stream not.

Another preferred version is, being provided with one provides the air compressor of pneumatic supply for ink-feeding device and be connected on the ink-feeding device by air cleaner.

Another preferred version is, is provided with one for ink-feeding device provides the feeder of pneumatic supply, and it comprises, is connected to many pipeline and pressure-reducing valve and air cleaners with sources of the gas.

Another preferred version is, a returnable bottle is set is connected to black collection with pipeline on the one hand, and this returnable bottle also links to each other with vacuum extractor by air cleaner on the other hand.

Last preferred version is that vacuum extractor is a vavuum pump or injector.

The utlity model has following advantage:

1, structure is provided with rationally, and adaptability is strong, can be applicable to surperficial spray printings such as various products.

2, make easily, do not need high-tech manufacturing technology and complex process technology, thereby with low cost, the manufacturing cycle is short.

3, the spray printing effect is fine, and the character of spray printing all size as required.

4, cooperate corresponding production line, can realize automatic spray printing.

Describe the utility model in detail below in conjunction with a specific embodiment in the accompanying drawing.

Fig. 1 is the structure principle chart of the utility model spray printing machine.

Fig. 2 is the utility model ultrasonic wave nozzle structure schematic diagram.

Referring to Fig. 1, wherein 1 is the ultrasonic wave shower nozzle, and 2 are the ink supply tube, and 3 is ball valve, 4 is first order China ink liquid filter, and 5 is indicating pressure gauge, and 6 is second level China ink liquid filter, 7 is returnable bottle, and 8 is vavuum pump or vacuum tank, is connected with vacuum filter 9 and injector 10 when with vacuum tank again.The compressed air that extruded ink liquid is used is through control valve 11, and air filter 12 enters ink supply tube 2.Two Pressure gauges 5 are indicated air and black hydraulic coupling numerical value respectively, and relatively the difference of two Pressure gauges indication can judge whether the China ink filter is stopped up by foul.Generally speaking, above-mentioned parts are assembled in the frame case, the mutual arrangement during as for assembling between each parts is a general technology, can be determined by the implementer.

By accompanying drawing 2 basic process of ink jet print once is described below.Wherein, represent whole ultrasonic ripple nozzle with the numbering in the accompanying drawing 11, it comprises: a common columniform sprayer body (1-4) is installed on the supporting member (1-2), sprayer body (1-4) central authorities are equipped with a staged through hole, end near supporting member (1-2) is equipped with pressure nail (1-1), it presses the other end of putting in sprayer body (1-4) center through hole to contract on the shoulder of hole tubular gland (1-3), in gland (1-3), be equipped with general columniform ultrasound piezoelectric element 1-5, it stretches in the undergauge hole and forms a part and is dipped in the liquid China ink, in principle, the end face of the end face of sprayer body 1-4 and piezoelectric element 1-5 aligns, sprayer body 1-4 also can make the member that separates on two axis in addition, form the becate appearance chamber (axis direction is very short) that a diameter is about 3 times of piezoelectric element 1-5 diameters in separation place, simultaneously also form a thin ring-shaped chamber between undergauge hole and piezoelectric element cylindrical surface, these two ring-shaped chambers become right-angled intersection in the vertical profile cross section; Also be equipped with a transfer passage 1-8 in sprayer body 1-4, it generally passes to external from the internal circular surfaces in described undergauge hole, and when sprayer body 1-4 was divided into two members on axis, transfer passage 1-8 was connected to the ring end that becate describes the chamber;

Sprayer body 1-4 with supporting member 1-2 away from the end be equipped with the gland 1-6 of a band nozzle aperture 1-7, aperture is generally circle.Form a short cylindrical shape cavity volume that holds the liquid China ink between itself and piezoelectric element end face; Described gland 1-6 also can be made into two member (1-6 that axis direction separates, 1-9), the member that contains the nozzle aperture is a thin plate garden shape part, and near the arrangement of piezoelectric element 1-5 end face, another annular construction member is equipped with a hole enlargement hole more much bigger than nozzle aperture, thereby sees one two step bellmouth orifice of formation along liquid stream injection direction; Hole diameter is generally selected for use in 30～100 μ m; The size of this and character has direct relation.1-10,1-11, the packing ring of 1-12 for guaranteeing that sealing is used.Described ultrasound piezoelectric element can be quartz (controlled) oscillator or piezoelectric ceramics vibration device, present embodiment applying piezoelectric ceramic oscillator, and it is used for making the liquid China ink to spray from aperture with the droplet form becomes intermittent current; Below nozzle, be mounted with charging device 1-13 and high-voltage deflection device 1-14 successively and at interval; Charging device comprises the charging utmost point and charging signals; Electrode is common slot type electrode, and charging signals is the sequencing pulsating volage that a control device provides, this control program be requirement according to printable character and custom-designed, this device is used to make the electric charge of different intensions on the miniature ink droplet band of the utmost point that overcharges; 1-14 is the high-voltage deflection device, and it comprises the high-voltage deflection utmost point and dc high-voltage source, and it is used to form high field, so that charged little ink droplet carries out correspondingly deflection in the electric field force effect, thereby forms the character of wishing.1-15 is the ink recovery device, and charged droplets does not collect.Wherein: charging utmost point pulsating volage amplitude is about: 0～300V.

High-voltage deflection plate voltage: 6KV

Present full-time instruction again is the entire work process (see figure 1) of this machine once, the source of the gas that provides by industrial source of the gas or compressor at first flows to ink supply tube 2 through air filter 12, liquid in the ink supply tube 2 China ink is through behind the ball valve under pressure, enter the first order 4 and the second level 6 liquid China ink filter, the liquid China ink that is fully purified just enters ultrasonic wave shower nozzle 1, under the ultrasonic wave effect, the formation that makes black liquid become miniature ink droplet sprays from little hole nozzle.

The droplet type intermittent current just passes through (see figure 2) between the charging utmost point 1-13, through just being filled with the electric charge of different interior letters afterwards, is deflected into various printable characters through high-voltage deflection plate 1-14 then.Uncharged ink droplet generally enters ink recovery device 1-15 unchangeably along the injection aspect, enter returnable bottle 7(Fig. 1 then under the negative pressure swabbing action).The black liquid that reclaims is reusable.

This shows that the utility model is a kind of tallying with the national condition, be the economical and practical products scheme that the user considers, rational in infrastructure, adaptability is strong, but does not need expensive technology and just processing and manufacturing of technology, thereby the commercial value height.The spray printing effect is fine simultaneously, and the ability accommodation of character is wide, because can realize as long as control device is done corresponding programming.In addition, cooperate corresponding production line, just can realize automatic spray printing.

Claims

1, a kind of spray printing machine comprises ink-feeding device, and the ultrasonic wave shower nozzle is characterized in that:

Described ink-feeding device comprises the closed cylinder (2) of a bearing certain pressure, settles two pipelines usually in the upper end, and one is air inlet pipe, and one is the China ink pipe, and it is connected on the ultrasonic wave shower nozzle (1); The ultrasonic wave shower nozzle comprises: a common cylindrical sprayer body (1-4) is installed on the supporting member (1-2), sprayer body (1-4) central authorities are equipped with a staged through hole, end near supporting member (1-2) is equipped with pressure nail (1-1), it is pressed tubular gland (1-3) and puts on the shoulder of the other end undergauge hole of sprayer body (1-4) center through hole, in gland (1-3), be equipped with the ultrasound piezoelectric element (1-5) of general cylinder, its stretch into the undergauge hole become the part be dipped in the liquid China ink, sprayer body (1-4) with supporting member (1-2) away from the end be equipped with one the band nozzle aperture (1-7) gland (1-6), between aperture and piezoelectric element end face formation a short cylindrical shape cavity volume that holds the liquid China ink; It passes to from the internal circular surfaces in hole, described liquid footpath that body (1-4) is outside to link to each other with the ink supply pipe to be equipped with a transfer passage (1-8) in sprayer body (1-4); Below nozzle successively and keep at a certain distance away and settle charging device and high-voltage deflection device;

After the liquid China ink sprays in the droplet mode, at first pass through charging device, this charging device comprises the charging utmost point and charging circuit, very slot type electrode charges, charging signals is the sequencing pulsating volage that is provided by a control device, and the control program in this control device is that the requirement according to printable character is provided with; See that along liquid China ink droplet intermittent current injection direction settle the high-voltage deflection device after charging device, it is made up of the positive and negative pole plate that is applied with high direct voltage, it produces high field, makes charged droplets flow the character that correspondingly deflection becomes printing.

2, by the described spray printing machine of claim 1, it is characterized in that: described sprayer body (1-4) is made two members that separate on the axis, form a short annular chamber in separation place, it becomes right-angled intersection to be communicated with the thin annular cavity type that is formed by undergauge hole and piezoelectric element (1-5), transfer passage (1-8) passes on the ring end face of described becate shape

In addition, at the ink supply pipe to settling a black hydraulic control valve such as ball valve and at least one black liquid filter between the ultrasonic wave shower nozzle.

3, by the described spray printing machine of claim 2, it is characterized in that:

Between control valve and ultrasonic wave shower nozzle, settle two (first order and the second level) black liquid filters, and between two filters, settle a pressure indicator.

4, by the described spray printing machine of claim 3, it is characterized in that:

Below the high-voltage deflection device, settle a black liquid retracting device over against the injection direction of the stream of deflected droplets not.

5, by the described spray printing machine of claim 4, it is characterized in that:

Be provided with one for ink-feeding device provides the air compressor of pneumatic supply, it is connected to ink-feeding device by an air cleaner.

6, by the described spray printing machine of claim 4, it is characterized in that:

Be provided with one for ink-feeding device provides the feeder of pneumatic supply, comprise:

Be connected to connecting pipe and pressure-reducing valve and an air cleaner of multipurpose high-pressure source of the gas.

7, by claim 5 or 6 described spray printing machines, it is characterized in that:

A returnable bottle is set, is connected with described black collection with pipeline, this returnable bottle is connected with a vacuum extractor, settles an air cleaner between returnable bottle and vacuum extractor.

8, by the described spray printing machine of claim 7, it is characterized in that:

Vacuum extractor is a vavuum pump or injector.