KR101842560B1 - Dispenser capable of adjusting a flowrate - Google Patents

Abstract

According to the present invention, a dispenser discharges a mixture which is obtained by mixing a solid discharge material and a liquid additive. To this end, the dispenser includes: a body having a space part therein; a nozzle coupled to a lower end of the body; and a screw inserted into the body. The body includes a melting part melting the solid discharge material; an inclined part transferring the molten discharged material; and a mixing/discharging part mixing the molten discharged material and the additive together, and coupled with a screw capable of controlling a discharge amount.

Description

Dispenser capable of adjusting a flow rate [0002]

The present invention relates to a dispenser capable of discharging molten material at a constant rate.

The dispenser is a device for discharging a liquid substance and is used for sealing and laminating operations in various devices such as a semiconductor manufacturing device, a display manufacturing device, and a 3D printer.

The material provided to the dispenser may be mainly liquid, but a rigid solid material may be used for the 3D printer. When a solid material is used, the solid material is melted and finally discharged to the nozzle of the dispenser.

The molten discharge discharged on the substrate may be subjected to a post-treatment process for imparting properties to the discharge. In the case of a solid material, an additive for imparting properties in a molten state prior to discharge should be injected.

Paste dispenser of Patent Registration No. 10-0807824 Improved nozzle dispenser of Patent No. 10-0898570 An improved air-pressurized nozzle dispenser of Patent Registration No. 10-0898571 and a fluorophore coating device having the same Dispenser Apparatus of Registration No. 10-1588383

An object of the present invention is to provide a dispenser structure capable of easily injecting an additive into a molten solid material.

Another object of the present invention is to provide a dispenser structure capable of preventing backflow of an additive and changing the kind of an additive.

The problems to be solved by the present invention are not limited to the above-mentioned problems. Other technical subjects not mentioned will be apparent to those skilled in the art from the following description.

A dispenser according to the present invention is a dispenser for mixing and discharging a solid state discharge material and a liquid state additive, wherein the dispenser has a body having a space portion therein, a nozzle coupled to a lower end portion of the body, A mixing unit for mixing the melted discharged material and the additive and a screw for adjusting the amount of the melted discharged material to be mixed with the melted melted solder material; And a discharging portion.

In an embodiment, a heat sink is coupled to the upper portion of the fused portion, a first heater is coupled to the lower portion of the fused portion, and the heat sink functions to prevent heat generated in the first heater from being transferred to the filament input portion.

The mixing and discharging portion of the dispenser according to the present invention is divided into an upper mixing region and a lower mixing region, a first inlet through which molten discharge material is supplied is formed at one upper end of the upper mixing region, An inlet is formed, and the discharge material supplied from the first inlet and the additive entering from the second inlet are mixed by the rotation of the screw provided in the lower mixing region.

The dispenser according to the present invention can mix and discharge the molten solid material and the liquid additive before discharge.

Further, the dispenser according to the present invention has an advantage that it can prevent the backflow of the additive and can change the kind of the additive.

1 is a cross-sectional view of a dispenser according to the present invention.
Figure 2 shows the addition of an additive feeder to a dispenser according to the invention.
Figure 3 shows the filament being fed into the dispenser.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. For convenience of explanation, elements shown in the drawings may be exaggerated, omitted, or schematically represented.

FIG. 1 shows a cross section of a dispenser according to the present invention, and FIG. 2 shows the addition of an additive supply device to a dispenser according to the present invention.

The dispenser according to the present invention includes a body 100 having a space therein, a nozzle 200 coupled to a lower end of the body, and a screw 300 fitted to the body.

1, the body 100 includes a melted portion 110 for melting a filament in a solid state, an inclined portion 120 for transferring the melted filament, and an extruder 120 for mixing the transferred filament and the additive, And a mixing and discharging unit 130 for controlling the mixing and discharging unit 130. The molten portion, the inclined portion, and the mixing and discharging portion are formed with spaces in which the discharge material moves.

The filament may be in the form of a solid wire, and may be made of ABS, ABS, PLA, or the like, and the additive may be in the form of a liquid, such as a colorant, an emulsifier, or the like.

Referring to FIG. 2, the upper end of the melted portion has a charging portion into which the filament is charged, and a heat sink and a heater-1 are coupled to the lower portion of the charging portion. The first heater is first coupled and then the heat sink is coupled. A body-body includes an outer surface of a round column-shaped body and a heater fitted to the outer surface of the body so that a heater sink of various sizes can be selected to adjust the height of the heater sink or adjust the cooling performance according to the degree of heat generation of the first heater. The coupling grooves of the sink are formed with helical grooves or helical projections so that they can be coupled with each other.

When the first heater generates heat to melt the filament, the input portion formed on the upper side of the first heater is heated. Accordingly, the filament may melt before the filament is drawn into the charging part, and the filament may not be drawn into the charging part. In order to prevent this, a heater sink is provided on the upper side of the first heater. The heater sink prevents heat generated from the first heater from being transmitted to the input unit. The melted filament from the melted portion is moved to the inclined portion.

On the other hand, since the slope part 120 is not provided with a heater, the melted filament can be hardened. To this end, it is preferable that the ramp formed between the melted portion and the mixing and discharging portion has a very short length. In addition, it is preferable that the molten portion, the inclined portion, and the mixing and discharging portion of the body are integrally formed, and that the metal material is selected so as not to rapidly cool and to have excellent specific heat characteristics.

In the mixing and discharging unit 130, a screw rotating by a motor is coupled to the internal space part. The upper side of the mixing and discharging portion is an upper mixing region AA and the lower side is a lower mixing region BB.

Referring to FIG. 1, a shaft hole is formed at an upper end of the upper mixing region to receive a shaft of a screw, and a first inlet 131 through which melted filaments are fed is formed on the left side of the shaft hole, On the right side of the shaft hole, a second inlet port 132 into which the additive is injected is formed. A coupling hole 510 is screwed into the second inlet.

The filament and the additive that have entered the upper mixing zone descend to the lower end by rotation of the screw provided in the lower mixing zone below the upper mixing zone.

At this time, a second heater is installed outside the lower mixed region. The second heater (heater-2) prevents the molten state from changing to a solid state due to the falling temperature. Finally, the filament mixed with the additive is discharged through the nozzle.

Referring back to FIG. 1, the second inlet may be additionally provided with an apparatus for supplying an additive. The additive supply device is in the shape of a pipe and is screwed to the coupling hole 510 provided at the second inlet at the other end thereof with an additive injected into one end thereof.

On the other hand, the pressure formed in the body space portion during the operation of the dispenser is relatively higher than the external pressure. To this end, a backflow prevention valve 520 and a pressure pump 530 are further installed in the additive supply pipe of the additive supply device. The check valve prevents backflow of the additive, and the pressurizing pump pressurizes the additive into the mixing zone. The check valve may be a check valve.

Figure 3 shows the filament being fed into the dispenser.

Referring to Fig. 3, the filament is supplied between the driver gear and the rotor. When the filament is sandwiched between the driver gear and the rotor, the driver gear rotates. Accordingly, the filament can be supplied to the body of the dispenser at a constant speed according to the rotational speed of the driver gear.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the present invention is not limited to the disclosed exemplary embodiments, but various changes and modifications may be made by those skilled in the art without departing from the scope of the present invention.

100: Body
110:
120:
130: Mixing and Discharging Unit
131: 1st inlet
132: 2nd inlet
510:
520: Backflow prevention valve
530: pressure pump
200: nozzle
300: Screw

Claims (3)

A dispenser for mixing and discharging a solid state discharge material and a liquid state additive,
The dispenser includes a body 100 having a space therein, a nozzle 200 coupled to a lower end of the body, and a screw 300 fitted to the body,
The body 100 includes a melting unit 110 for melting a solid discharge material, a slope unit 120 for transferring the molten discharge material, and a mixing unit 120 for mixing the melted discharge material and the additive, And a mixing and discharging part (130) to which the screw is coupled,
The melted portion 110, the inclined portion 120, and the mixing and discharging portion 130 are integrally formed,
And an injection unit for injecting a filament is provided at an upper end of the fused portion,
A heat sink is coupled to the upper portion of the melted portion, a first heater is coupled to the lower portion of the melted portion, the heat sink prevents heat generated in the first heater from being transmitted to the input portion,
The mixing and discharging unit is divided into an upper mixed region and a lower mixed region. A first inlet 131 for supplying molten discharged material is formed at one upper end of the upper mixed region, and a second inlet 131 132 are formed,
A second heater is installed in the lower mixing region,
Wherein the additive supply device comprises an additive supply pipe, one end of which is filled with an additive and the other end of which is connected to a second inlet, and the additive supply device is connected to the second inlet, The pipe is provided with a check valve 520 for preventing the backflow of the additive and a pressurizing pump 530 for pressurizing the additive. The check valve is installed on the side of the second inlet, and the pressurizing pump is installed on the side where the additive is introduced And,
Wherein the dispensing material supplied from the first inlet and the additive introduced from the second inlet are mixed by rotation of a screw provided in the lower mixing area.




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