KR20180041596A - Dispenser and Operating Method thereof - Google Patents

Abstract

Provided are a dispenser to discharge the remaining air, and an operating method of the same. According to one embodiment of the present invention, the dispenser comprises: a barrel having a nozzle formed in one end to discharge liquid and storing the liquid; and a piston including a pusher in direct contact with the liquid stored in the barrel to press the liquid towards the nozzle and a piston head formed on one side of the pusher to press the pusher towards the nozzle. The pusher is relatively moved to be placed in a discharge position or a closing position with respect to the piston head in accordance with a repulsive force which is provided to the pusher from the liquid by pressing. When the pusher is placed in the discharge position, the pusher is spaced apart from the piston head at a predetermined interval to discharge the remaining air inside the barrel to the outside, and when the pusher is placed in the closing position, the gap between the pusher and piston head is able to be closed to discharge the liquid to the outside through the nozzle.

Description

DISPENSER AND OPERATING METHOD THEREOF

The present invention relates to a dispenser and a method of operating the dispenser, and more particularly, to a dispenser capable of discharging residual air and a method of operating the dispenser.

In general, a dispenser is a pumping device that discharges a gas, liquid, or gel-type content filled in a sealed container by a predetermined amount by pressurization. Such a dispenser is provided on one side of a container in which contents are stored, and is configured to discharge the contents.

It is important to uniformly discharge a predetermined amount of the content mule to the discharge port of the dispenser. The air remaining in the dispenser during the dispensing process should not be discharged to the discharge port of the dispenser but be discharged to the outside without interfering with the discharge of the contents.

Dispensers are used in various fields, among which the use thereof in the 3D printing field is rapidly increasing.

Research on this 3D printing has shifted from studies to improve existing resolution to research on functional 3D printing structures with electrical, chemical or mechanical properties.

The use of metallic materials is essential for the electrical performance of the result of printing, and the technologies that can use metal materials are SLA (Stereolithography) and SLS (Selective Laser Sintering). However, both methods require expensive printing systems, and users need long-term training to use the system. Further, only a single material can be used, and the printing time is long.

Accordingly, it is an object of the present invention to provide a system for fabricating a three-dimensional or two-dimensional structure by discharging a metallic liquid through a nozzle by compensating for the disadvantages of conventional SLS and SLA systems.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a dispenser for discharging residual air and a method of operating the dispenser.

Another object of the present invention is to provide a dispenser for automatically discharging residual air and a method of operating the dispenser.

Another object of the present invention is to provide a dispenser for discharging residual air with a simple structure and a method of operating the dispenser.

It is another object of the present invention to provide a dispenser and a dispenser in which a liquid phase is uniformly discharged.

Another object of the present invention is to provide a dispenser and a method of operating the dispenser capable of confirming whether the remaining amount of residual air is energized or not in order to discharge the conductive liquid phase with the nozzle.

The technical problem to be solved by the present invention is not limited to the above and can be understood more clearly by the following description.

According to an aspect of the present invention, there is provided a dispenser.

According to one embodiment, the dispenser includes a barrel having a nozzle for discharging a liquid phase at one end, and a barrel for receiving the liquid phase; And a piston provided on one side of the pusher and including a piston head for pressing the pusher toward the nozzle in direct contact with the liquid in the barrel so as to press the liquid in the direction of the nozzle Wherein the pusher is relatively moved by the press so that the liquid phase is located at a discharge position or a closed position with respect to the piston head in response to a repulsive force provided to the pusher and when the pusher is located at the discharge position, The pusher is spaced apart from the piston head by a predetermined distance so that the residual air is discharged to the outside, and when the pusher is located at the closed position, the liquid phase is discharged only through the nozzle, Can be sealed.

According to an embodiment of the present invention, there is provided a dispenser according to one embodiment, wherein the piston head has a clearance adjusting groove formed therein at a predetermined depth, the piston having one end fixedly connected to one side of the pusher, and the other end extending toward the inside of the clearance adjusting groove, Wherein the clearance between the one surface of the clearance adjusting groove and one surface of the fastening opening facing the one surface of the clearance adjusting groove is smaller than the clearance between the one surface of the clearance adjusting groove and the one surface of the fastening opening, May be spaced a predetermined distance apart between the pusher and the piston head.

The pusher may be positioned in the closed position with respect to the piston head if the repelling force is greater than the reference repulsive force and the pusher may be positioned in the closed position with respect to the piston head if the repelling force is less than the reference repulsion force. Lt; / RTI >

The dispenser according to an embodiment is characterized in that when the pusher is located at the discharge position, one surface of the piston head facing the one surface of the pusher and one surface of the pusher is spaced apart by the predetermined interval in the pressing direction have.

The dispenser according to an embodiment may further include a snap fit for adjusting a relative position between the pusher and the piston head, wherein the piston has one end coupled to the pusher and the other end having a first engagement step and a second engagement step, Wherein when the pusher is located at the discharge position, a cross section of the piston head supports the second latching jaw so that the pusher and the piston head are spaced apart from each other by a predetermined distance, whereby the residual air in the barrel is discharged to the outside, When the pusher is in the closed position, the cross section of the piston head supports the first latching jaw so that the gap between the pusher and the piston head can be sealed.

According to an embodiment of the present invention, a snap fit guide hole is formed on the inside of the piston head, and the snap fit moves in the snap fit guide hole. By the step between the first and second stopping jaws, The spacing between the pusher and the piston head can be adjusted.

The dispenser according to one embodiment further includes a snap fit for adjusting a relative position between the pusher and the piston head, one end of the piston being coupled to the pusher and the other end having a latching jaw, And a locking protrusion provided on an outer periphery of the head to engage with the locking protrusion, wherein when the pusher is positioned at the ejection position, the locking protrusion is disengaged from the locking protrusion, The piston head is spaced apart by a predetermined distance so that residual air in the barrel is discharged to the outside, and when the pusher is positioned at the closed position, the engaging jaw is engaged with the engaging jaw seating surface, and between the pusher and the piston head Can be sealed.

According to one embodiment, the dispenser includes a barrel having a nozzle for discharging the conductive liquid phase at one end, and accommodating the conductive liquid phase; A piston insulated from an inner surface of the barrel by pressing and discharging the conductive liquid phase received in the barrel toward the nozzle; And an alarm sensor for indicating whether the piston and the conductive liquid phase are in direct contact with each other depending on whether or not the piston and the barrel are energized.

According to an embodiment of the present invention, the one end of the piston is provided with an air discharging passage for discharging the air inside the barrel to the outside, and the piston is disposed in the air discharging passage with respect to the piston, Wherein the air discharge adjusting rod closes an inlet of the air discharge path when the piston and the conductive liquid phase are in direct contact with each other, and when the piston and the conductive liquid phase are not in contact with each other, The residual air in the barrel can be discharged through the air discharge passage.

According to an aspect of the present invention, there is provided a method of operating a dispenser.

A method of operating a dispenser according to an embodiment includes pressing a liquid phase accommodated in a barrel in a nozzle direction through a pusher and a piston head provided at one side of the pusher; Discharging residual air in the barrel through a gap between the pusher and the piston head; And a step in which, when the pusher directly contacts the liquid phase, the gap is sealed by a repulsive force applied by the liquid phase to the pusher in the direction of the piston head, and the liquid phase is discharged through the nozzle.

A method of operating a dispenser according to one embodiment includes: pressing a conductive liquid phase received in a barrel with a piston toward a nozzle; Discharging residual air in the barrel through an air discharge passage provided at one end of the piston; And energizing an alarm sensor indicating direct contact of the piston with the conductive liquid phase.

The method of operating a dispenser according to an embodiment may further include an air discharge adjustment rod that moves relative to the piston in the air discharge flow passage, wherein when the piston and the conductive liquid phase are in direct contact, And closing the inlet of the flow passage with the air discharge control rod.

The dispenser according to an embodiment of the present invention has an advantage that the residual air in the barrel can be easily discharged using the repulsive force applied by the liquid phase to the pusher due to the pressure of the piston.

The dispenser according to another embodiment of the present invention has an advantage in that residual air having a small specific gravity can be discharged while maintaining a uniform pressing force by controlling a predetermined distance between the piston head and the pusher, .

The dispenser according to another embodiment of the present invention can easily detect whether air remains in the barrel by providing an alarm sensor and further includes an air discharge control rod to increase the pressure area of the piston, There is an advantage that the pressing force can be improved.

According to another embodiment of the present invention, there is provided a dispenser comprising: There is an advantage that the structure of the dispenser can be simplified and manufacturing cost can be reduced.

1 shows a dispenser according to a first embodiment of the present invention.
2 is a detailed view for explaining a piston of a dispenser according to a first embodiment of the present invention.
3 is a front sectional view showing an operation state of the dispenser according to FIG.
4 is an enlarged view of the area A of the dispenser shown in Fig.
5 is a view showing each configuration of a piston according to a first modification of the first embodiment of the present invention.
FIG. 6 is a front sectional view showing the operating state of the piston according to the first modification shown in FIG.
7 is a view showing each configuration of a piston according to a second modification of the first embodiment of the present invention.
8 is a perspective view showing an operating state of the piston according to the second modification shown in FIG.
FIG. 9 is a front sectional view showing the operating state of the piston according to the second modification shown in FIG.
10 is a front sectional view of a piston according to a third modification of the first embodiment of the present invention.
11 is a front sectional view showing the operating state of the piston according to the third modification shown in FIG.
FIG. 12 is a view showing the configuration of a dispenser according to a second embodiment of the present invention.
13 is a front cross-sectional view showing an operation state of the dispenser according to the second embodiment shown in FIG.
FIG. 14 is a view for explaining the piston according to the second embodiment shown in FIG. 13 in detail.
15 is a flowchart showing an operation method of the dispenser according to the first embodiment of the present invention.
16 is a flowchart showing an operation method of the dispenser according to the second embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the technical spirit of the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

In this specification, when an element is referred to as being on another element, it may be directly formed on another element, or a third element may be interposed therebetween. Also, in the drawings, the shape and thickness are exaggerated for an effective description of the technical content.

Also, while the terms first, second, third, etc. in the various embodiments of the present disclosure are used to describe various components, these components should not be limited by these terms. These terms have only been used to distinguish one component from another. Thus, what is referred to as a first component in any one embodiment may be referred to as a second component in another embodiment. Each embodiment described and exemplified herein also includes its complementary embodiment. Also, in this specification, 'and / or' are used to include at least one of the front and rear components.

The singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. It is also to be understood that the terms such as " comprises "or" having "are intended to specify the presence of stated features, integers, Should not be understood to exclude the presence or addition of one or more other elements, elements, or combinations thereof. Also, in this specification, the term "connection " is used to include both indirectly connecting and directly connecting a plurality of components.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

First Embodiment

FIG. 1 shows a dispenser 10 according to a first embodiment of the present invention. FIG. 2 is a view for explaining the piston 200 of the dispenser 10 according to the first embodiment of the present invention in detail. FIG. 3 is a front sectional view showing an operation state of the dispenser according to FIG. 2, and FIG. 4 is an enlarged view of an area A of the dispenser shown in FIG.

1 and 2, a dispenser 10 according to an embodiment of the present invention includes a dispenser 10 for dispensing a liquid into a barrel 100 so as not to be disturbed by discharge of a liquid, And the liquid phase can be discharged through the nozzle 110 by providing a uniform pressing force to the liquid phase.

More specifically, the dispenser 10 allows the residual air in the barrel 100 to be discharged to the outside without affecting the liquid discharge path, using the characteristic of the residual air having a smaller specific gravity than the liquid phase, The liquid phase can be uniformly discharged. In addition, since liquid air is removed, high reliability printing can be provided.

In the present specification, the liquid phase can be understood not only as a material such as silver and copper used in printing electronics, but also as a concept including a liquid phase used in a 3D printer.

The dispenser 10 may include a barrel 100 and a piston 200. The barrel 100 may include a nozzle 110 for receiving the liquid phase and discharging the liquid phase at one end thereof.

The barrel 100 may have a hollow to allow the piston 200 to reciprocate within the barrel 100.

The barrel 100 is made of a thermally conductive metal material made of at least one selected from gold, silver, palladium, platinum, copper, nickel, cobalt, tungsten, iron, aluminum and alloys thereof or silicon, polymer, ceramic, copolymers, and mixtures thereof.

The nozzle 110 may be provided at one end of the barrel 100. The nozzle 110 can provide a discharge path to the liquid phase contained in the barrel 100. The nozzle 110 may be made of the same material as the barrel 100.

The barrel 100 may further include a heater 600, a heating block 610, a heat insulating material 700, and a case 800. The barrel 100 may further include a stirrer (not shown) can do.

The heater 600 may be provided outside the barrel 100 to apply heat to the barrel 100 to melt the liquid contained in the barrel 100. May be provided in the form of a solid powder or a small lump in the barrel 100, and the solid phase powder or small lump form may be melted and phase-changed into a liquid phase. Thereby, a liquid phase for discharging in the barrel 100 can be prepared.

The heating block 610 may be made of a thermally conductive metal to support and heat the barrel 100 and the heater 600 and to transfer the heat of the heater 600 to the barrel 100.

The heat insulating material 700 may be provided on the outer edge of the heater 600 to function as a heat shield so that the heat of the heater 600 is transmitted to the inner barrel. The heat insulating material 700 may be made of a low thermal conductive material such as silica wool, glass wool or the like in order to block heat.

The case 800 is provided to fix the barrel 100, the heater 600, and the heating block 610, and is connected to the entire system. In view of stability, the case 800 has low thermal conductivity such as PTFE, PBI, PEEK, And the strength can be increased.

The stirrer (not shown) may agitate the contents accommodated in the barrel 100 so that it can be melted by uniformly applying a heat source to the contents provided in the form of a solid phase powder or a small lump. A stirrer (not shown) may be a propeller that is accommodated in the barrel 100 and rotates by an external rotational force or a piezoelectric provided on one side of the barrel 100 to vibrate the inside of the bin 100 by a magnet, Lt; / RTI >

2, the piston 200 can pressurize the liquid phase toward the nozzle 110 so that the liquid phase stored in the barrel 100 is discharged through the nozzle 110. [ The piston 200 may include a pusher 210 and a piston head 220, a piston rod 240 and a fastener 250. The piston 200 may be disposed in such a manner that the pusher 210, the piston head 220, and the piston rod 240 are opposed to each other and arranged sequentially.

The pusher 210 can perform a function of discharging the liquid phase by pressing the liquid phase accommodated in the barrel 100 toward the nozzle 110. The pusher 210 can open and close the air discharge passage f in accordance with the relative positional relationship with the piston head 220.

The pusher 210 can directly contact the liquid phase so as to press the liquid phase accommodated in the barrel 100 in the direction of the nozzle 110. [ To this end, the pusher 210 may be provided in a shape corresponding to the inner liquid-receiving portion of the barrel 100 so as to be accommodated in the barrel 100. In other words, the side surface of the pusher 210 when the piston 200 is moved up and down in the barrel 100 may be provided so as not to be spaced apart from the inner surface of the barrel 100. Therefore, the pusher 210 can uniformly transmit the force transmitted to the piston 200 to the liquid phase to eject the liquid phase.

The piston head 220 may provide a predetermined pressure to the liquid phase or may provide the air discharge passage f so that the residual air in the barrel 100 may be discharged to the outside. The piston head 220 is provided between the pusher 210 and the piston rod 240 and can transmit the force applied to the piston rod 240 to the pusher 210. The piston head 220 is provided on one side of the pusher 210 and can transmit a force to press the pusher 210 in the direction of the nozzle.

The clearance adjusting groove 230 may be formed at a predetermined depth inside the piston head 220.

Referring to FIG. 4, the clearance adjusting groove 230 may guide the lifting movement of the pusher 210 in the axial direction. The clearance adjusting groove 230 may be formed on the shaft of the piston head 220 in a shape corresponding to the shape of the fastener head of the fastener 250 to be described later. The clearance adjusting groove 230 has a step g having a certain depth from the first surface 231 of the clearance adjusting groove to the second surface 232 of the clearance adjusting groove so as to be deeper than the height at which the fastener 250 is moved up and down, Lt; / RTI > In this case, the first surface 231 of the clearance adjusting groove may be a surface provided in a direction for pressing toward the nozzle 110, and the second surface 232 of the clearance adjusting groove may have a first surface 231 G "). ≪ / RTI >

More specifically, the step g of the constant depth of the clearance adjusting groove may be distant from the predetermined distance between the pusher 210 and the piston head 220. The gap between the second surface 232 of the clearance adjustment groove and the second surface 254 of the fastener described below may be further away from the predetermined distance between the pusher 210 and the piston head 220. Thereby, a spacing distance between the pusher 210 and the piston head 200 can be provided, and the spacing distance can be utilized as an air discharge path.

The fastener 250 may be coupled to the pusher 210 to move the pusher 210 up and down to a discharge position and a closed position. The fastener 250 may include a fastener head 251 and a fastener body 252. The fastener head 251 may have a first surface 253 of the fastener and a second surface 254 of the fastener. The first surface 253 of the fastener may be a surface directly contacting the first surface 231 of the clearance adjusting groove provided in the direction of pressing in the direction of the nozzle 110. The second surface 254 of the fastener may be a surface that moves up and down toward the second surface 232 side of the clearance adjusting groove as the fastener 250 moves up and down.

One end of the fastener body 252 is fixedly coupled to one side of the pusher 210 and the other end of the fastener body 252 is inserted into the clearance adjusting groove 230 together with the fastener head 251 to move up and down. Depending on the discharge position or the closed position, the fastener 250 may have a different depth from the play adjusting groove 230.

Hereinafter, the discharge position and the sealing position may be provided according to the positional relationship in the clearance adjusting groove 230, and the operating mechanism will be described in more detail with reference to FIGS. 3 and 4 .

Hereinafter, the operating relationship according to the first embodiment will be described.

FIG. 3 is a front sectional view showing an operation state of the dispenser 10 according to FIG. 2, and FIG. 4 is an enlarged view of an area A of the dispenser shown in FIG.

3 and 4, the pusher 210 can move relative to the piston head 220 such that the liquid phase is displaced relative to the piston head 220 according to the repulsive force provided to the pusher 210 by the pressure.

The discharge position means a positional relationship in which the pusher 210 is spaced apart from the piston head 220 by a predetermined distance to provide the air discharge passage f so that the residual air in the barrel 100 can be discharged to the outside .

The sealing position may mean a positional relationship in which the pusher 210 comes into close contact with the piston head 220 to seal the air discharge passage f. In other respects, the upper surface of the pusher 210 and the lower surface of the piston head 220 come into close contact with each other, so that the air discharge passage f can be sealed.

One end of the fastener 250 is fixedly coupled to one side of the pusher 210 and the other end of the fastener 250 is inserted into the clearance adjusting groove 230 in the piston head 220, . The pusher 210 can be relatively moved to the discharge position and the closed position by the lifting movement of the fastener 250 in the clearance adjusting groove 230 by pressurization.

Referring to FIGS. 3 (a) and 4, when the pusher 210 is positioned at the discharge position, the first surface 231 of the clearance adjusting groove and the first surface 253 of the fastener can be brought into contact with each other. Further, one surface 221 of the piston head facing the one surface 211 of the pusher and the one surface 211 of the pusher may be spaced apart by a predetermined distance in the pressing direction. Thus, the residual air in the barrel 100 can be discharged to the outside along the air discharge passage f and a space separated by a predetermined distance between the pusher 210 and the piston head 220.

On the other hand, when the pusher 210 presses the liquid phase, the positional relationship between the pusher 210 and the piston 220 is changed from the discharge position to the closed position Can be switched.

In this case, the repulsive force may be a reaction in which the liquid phase pushes the pusher 210 in the opposite direction to the action that the pusher 210 directly contacts and presses the liquid phase.

If the repulsive force of the liquid phase to the pusher 210 is smaller than the reference repulsive force, the pusher 210 may be positioned at the discharge position with respect to the piston head 220. Thus, by locating the pusher 210 at the discharge position, it is possible to secure a discharge path for smoothly discharging the residual air inside the barrel 100 to the outside.

If the repulsive force of the liquid phase to the pusher 210 is greater than the reference repulsive force, the force that the liquid phase pushes the pusher 210 toward the piston head 220 is greater than the force that the piston head 220 presses the pusher 210 The pusher 210 moves upward with respect to the piston head 220 and the pusher 210 can be in surface contact with the piston head 220 in the closed position. By placing the pusher 210 in the closed position, the piston head 220 transmits a greater force to the pusher 210 through the contact surface of the piston head 220 and the pusher 210, . 3 (b) will be referred to for a specific explanation.

3 (b), when the pusher 210 is in the closed position, the fastener 250 is inserted into the clearance adjusting groove 230 so that the gap between the pusher 210 and the piston head 220 can be sealed It can be moved up and down. That is, the second surface 253 of the fastener can be moved up and down to the second surface 232 side of the clearance adjusting groove. In this case, the gap between the pusher 210 and the piston head 220 may be sealed so that the liquid phase is discharged to the outside only through the nozzle 110. Thereby, a closed position can be provided.

The first embodiment of the present invention has been described with reference to Figs. 1 to 4. Fig. Hereinafter, modifications of the first embodiment of the present invention will be described with reference to Figs. 5 to 9. Fig. For the sake of clarity, the overlapping portions will not be described. In the modification, the first modification will be described first with reference to Figs. 5 and 6 in the configuration in which the piston head 220 and the pusher 210 are combined.

In the first embodiment First variant  Yes

FIG. 5 is a view showing each configuration of the piston according to the first modification of the first embodiment of the present invention, and FIG. 6 is a front sectional view showing the operation of the piston according to the first modification shown in FIG.

Referring to FIGS. 5 and 6, the piston 200 according to another embodiment of the present invention may include a snap fit 340, which will be described later, instead of the fastener 250.

The snap fit 340 may have a first stopping step 341 and a second stopping step 342 with one end coupled to the pusher 210 and the other end stepped. One end of the snap fit 340 can be coupled to the side of the pusher 210, for example, by screwing. The second engagement step 342 may be provided at an end of the snap fit 340 and the first engagement step 341 may be provided at a predetermined distance from the second engagement step 342. [ At this time, the first and second stoppers 341 and 342 have a structure that extends radially outwardly of the piston head 220, and the second stopper 342 is positioned closer to the first stopper 341 than the first stopper 341 And may have a structure extending radially outward.

The specific position of the discharge position and the closed position can be determined depending on whether the first and second stopping jaws 341 and 342 of the snap fit 340 are fixed to the piston head 220 , And a detailed description thereof will be described later.

The snap fit 340 can have a predetermined elasticity so that the first and second stopping jaws 341 and 342 can be easily fixed to the stopping jaw receiving surface 331a described later.

The piston head 220 may further include a snap fit guide 330 for driving the snap fit 340. The snap fit guide 340 may include a snap fit guide 330, have.

The snap fit guide 330 supports the snap pit 340 and can guide the moving direction of the snap pit 340 that moves relative to the snap pit 340. The snap fit guide hole 330 can guide the movement of the snap fit 340 so that the pusher 210 can move up and down from the discharge position to the closed position.

The snap fit guide 330 may have an opening formed on the inner side of the piston head 220 and may have a structure that passes through the entire length of the piston head 220 in the thickness direction. In other words, the snap fit 340 can move up and down inside the piston head 220 through the snap fit guide hole 330.

At this time, the end surface of the piston head 220 can be defined as a stopping jaw seating surface 331a, which can be surface-engaged with one end of the snap fit 340 . A specific one of the first and second stopping jaws 341 and 342 can be fixedly coupled to the stopping jaw seating surface 331a. If the first latching jaw 341 is coupled to the latching jaw seating surface 331a, a closed position may be provided and, alternatively, the second latching jaw 342 may be coupled to the latching jaw seating surface 331a A discharge position may be provided.

Hereinafter, the operating relationship according to the first modification of the first embodiment will be described.

When the second latching jaw 342 is face-engaged with the latching jaw receiving surface 331a as shown in Fig. 6 (a), a discharge position can be provided. That is, when the second stopping jaw 342 is supported by the stopping jaw seating surface 331a, the pusher 210 and the piston head 220 may be separated from each other by a predetermined distance. Thereby, the residual air in the barrel 100 can be discharged to the outside through the air discharge flow path f.

Alternatively, when the first latching jaw 341 is face-engaged with the latching jaw receiving surface 331a as shown in Fig. 6 (b), a closed position can be provided. That is, when the first latching jaw 341 is supported by the latching jaw seating surface 331a, the pusher 210 and the piston head 220 are in surface contact with each other so that the air discharge passage f can be closed. As a result, the liquid phase in the barrel 100 can be discharged through the nozzle 110.

Meanwhile, in the initial state, the second latching jaw 342 is supported by the latching jaw seating surface 331a, so that the residual air in the barrel 100 can be discharged to the outside through the air discharge passage f. In this case, when the pusher 210 is pushed in the direction of the piston head 220, the snap fit 340 moves up and down. . As a result, the second latching jaw 342 supported by the latching jaw receiving surface 331a can be automatically converted into the first latching jaw 341. [

According to the first modified example, the snap fit 340 is provided with a structure in which the first engagement step 341 and the second engagement step 342 are arranged facing the outer edge to be seated on the engagement step seating surface 331a can do. Since the jaws are provided to face the outer edge, usability can be improved. That is, in the process of discharging the liquid phase in the barrel through the piston, the relative positional relationship between the pusher and the piston head is changed from the discharge position to the closed position. In order to discharge the liquid phase in the barrel, The relative positional relationship must be initialized to the discharge position. At this time, since the engaging jaws protrude toward the outside of the piston head, it is possible to conveniently switch from the closed position to the discharge position.

The first modification of the first embodiment has been described with reference to Figs. 5 and 6. Fig. Hereinafter, a second modification of the first embodiment will be described.

In the first embodiment Second variant  Yes

8 is a perspective view showing the operating state of the piston according to the second modification shown in FIG. 7, and FIG. 9 is a perspective view showing the piston according to the second modification of the first embodiment of the present invention. Sectional view showing the operating state of the piston according to the second modification shown in FIG. 7 to 9, the piston 200 according to the second modification of the present invention may include a snap fit 350.

The snap fit 350 may have one end coupled to the pusher 210 and the other end having a stop 351a. One end of the snap fit 340 can be coupled to the side of the pusher 210, for example, by screwing. The engaging jaw 351a may have a structure extending radially inward of the piston head 220. [ The engaging jaw 351a can be engaged or disengaged with the engaging jaw receiving surface 331b of the piston head 220. [

The piston head 220 may be provided with a stopping surface 331b formed on the outer circumferential edge of the piston head 220. In this case, the engaging jaw 351a may be engaged with the engaging jaw seating surface 331b to provide a closed position between the pusher 210 and the piston head 220, while the engaging jaw 351a, It can be disengaged from the engaging jaw seating surface 331b so that the ejection position between the pusher 210 and the piston head 220 can be provided.

Hereinafter, the operating relationship according to the second modification of the first embodiment will be described.

When the latching jaw 351a is disengaged from the latching jaw seating surface 331b as shown in Figs. 8 (a) and 9 (a), a discharge position can be provided. That is, when the latching jaw 351a is released from the latching jaw receiving surface 331b, the pusher 210 and the piston head 220 may be separated from each other by a predetermined distance. Thereby, the residual air in the barrel 100 can be discharged to the outside through the air discharge flow path f.

Alternatively, as shown in Figs. 8 (b) and 9 (b), when the engaging jaw 351a is face-engaged with the engaging jaw receiving surface 331b, a sealing position can be provided. That is, when the latching jaw 351a is supported by the latching jaw seating surface 331b, the pusher 210 and the piston head 220 are in surface contact with each other so that the air discharge passage f can be closed. As a result, the liquid phase in the barrel 100 can be discharged through the nozzle 110.

On the other hand, in the initial state, the retaining jaw 351a is released from the retaining jaw seating surface 331b, so that the residual air in the barrel 100 can be discharged to the outside through the air discharge passage f. In this case, when the pusher 210 is pushed toward the piston head 220, the snap fit 350 is moved up and down. . Thereby, the latching jaw 351a can be automatically supported on the latching jaw receiving surface 331b.

In the first modified example described above, the snap pit 350 is moved up and down in the snap fit guide hole 330 passing through the inside of the piston head 220, thereby providing the sealing position and the discharging position. In the second modified example There is a difference in that the snap fit 350 moves up and down along the outside of the piston head 220, thereby providing a closed position and a discharge position. Therefore, according to the second modification, since the movement path of the snap fit 350 is exposed to the outside, there is an advantage that maintenance is easy.

The second modification of the first embodiment has been described with reference to Figs. 7 and 9. Fig. Hereinafter, a third modification of the first embodiment will be described.

In the first embodiment 3rd variant  Yes

FIG. 10 is a front sectional view of a piston 200 according to a third modification of the first embodiment of the present invention, and FIG. 11 is a front sectional view showing an operating state of the piston according to the third modification shown in FIG.

Referring to FIG. 10, the piston 200 according to the third modification of the present invention may include a snap fit 350.

The snap fit 350 may have a hook 351b whose one end is engaged with the pusher 210 and the other end is inclined at a certain angle in the axial direction. The engaging jaw 351b may be engaged or disengaged from the engaging jaw seating surface 331c inclined at a predetermined angle of the piston head 220. [

The piston head 220 may be formed with a step on the outer periphery of the piston head 220 and may be provided with a locking protrusion surface 331c formed by inclining at a slope corresponding to the locking protrusion 351b. In this case, the engaging jaw 351b can be engaged with the engaging jaw receiving surface 331c provided in an inclined manner in a surface-contact manner to provide a closed position between the pusher 210 and the piston head 220, The jaw 351b is disengaged from the engaging jaw seating surface 331c so that the ejection position between the pusher 210 and the piston head 220 can be provided.

Hereinafter, the operating relationship according to the third modification of the first embodiment will be described.

When the latching jaw 351b is disengaged from the latching jaw receiving surface 331c as shown in Fig. 11 (a), a discharge position can be provided. That is, when the retaining jaw 351b is released by the retaining jaw seating surface 331c, the pusher 210 and the piston head 220 may be separated from each other by a predetermined distance. Thereby, the residual air in the barrel 100 can be discharged to the outside through the air discharge flow path f.

Alternatively, as shown in FIG. 11 (b), when the latching jaw 351b slides along the inclined jaw receiving surface 331c and is surface-coupled and supported, a closed position can be provided. That is, when the engaging jaw 351b is supported by the engaging jaw seating surface 331c, the pusher 210 and the piston head 220 are in surface contact with each other so that the air discharge passage f can be closed. Thereby, the liquid phase in the barrel 100 can be discharged through the nozzle 110.

In the second modified example described above, each end of each of the engaging jaw 351a and the engaging jaw seating surface 331b has a rectangular outer shape. In the third modified example, the engaging jaw seating surface 331c provided at an inclination and the corresponding There is a difference in that a latching jaw 351b provided at an inclined angle is provided. Therefore, when the pusher 210 moves upward and downward from the discharge position to the closed position, there is an advantage that the up and down movement is facilitated by guiding the lifting and lowering movement of the retaining jaw 351b in which the retaining jaw receiving surface 331c slides.

The first embodiment has been described above. The second embodiment will be described below.

Second Embodiment

FIG. 12 is a view showing each configuration of the dispenser 10 according to the second embodiment of the present invention, FIG. 13 is a front sectional view showing the operation of the dispenser according to the second embodiment shown in FIG. 12, Is a view for explaining the piston 200 according to the second embodiment shown in FIG. 13 in detail.

Referring to FIG. 11, the dispenser 10 according to another embodiment of the present invention can confirm whether or not the remaining amount of air in the barrel 100 has been discharged to the outside, and also can check the air outflow path in the dispenser 10 The conductive liquid phase can be discharged through the nozzle 110 by applying a larger force to the conductive liquid phase.

More specifically, the dispenser 10 allows the residual air in the barrel 100 to be confirmed by using the characteristic of the conductive liquid phase current, and further, to increase the magnitude of the force applied to the liquid phase, It is possible to increase the pressing area of the pressing member 200.

The dispenser 10 may include a barrel 100, a piston 200, and an alarm sensor 500. The barrel 100 can accommodate a conductive liquid phase.

In the present specification, the conductive liquid phase is a liquid phase and can be understood as a liquid phase having electrical conductivity. The conductive liquid phase can be prepared as the metal powder contained in the barrel is melted by the heater.

The alarm sensor 500 can sense whether the piston 200 is in direct contact with the conductive liquid depending on whether the piston 200 and the barrel 100 are energized or not. When air remains between the piston 200 and the conductive liquid phase as shown in Fig. 13 (a), electricity does not pass and the alarm sensor 500 does not operate. Alternatively, the alarm sensor 500 can be operated only when the barrel 100 and the piston 200 are in contact with each other on the conductive liquid, as shown in Fig. 13 (b). For this purpose, the piston and the barrel have a basic structure, and on / off driving can be performed depending on whether or not the conductive liquid phase is included depending on the situation.

The alarm sensor 500 for indicating whether the piston 200 is in direct contact with the conductive liquid phase may be an electrically operated LED, a buzzer, a vibration generator, or the like.

More specifically, the outer circumference of the piston 200 facing the inner surface of the barrel 100 may have insulating properties. That is, the outer circumference of the piston 200 may have insulation property so that the direct contact of the conductive liquid phase with the piston 200 can be discriminated. In other words, when the piston and the conductive liquid phase are not in contact with each other as shown in Fig. 13 (a), the alarm sensor 500 may have an off state.

Meanwhile, at one end of the piston 200, an air discharge passage f for discharging the air inside the barrel 100 to the outside may be provided. The piston 200 may further include an air discharge adjustment rod 440.

The air discharge control rod 440 is disposed in the vicinity of the air discharge passage f to discharge the conductive liquid in the barrel 100 through the nozzle 110 when the entire amount of the residual air in the barrel 100 is discharged to the outside. By increasing the contact surface with the conductive liquid phase by the cutoff, the pressing force of the piston 200 can be improved.

The air discharge adjustment rod 440 can close the inlet of the air discharge passage f when the piston 200 and the conductive liquid phase are in direct contact with each other, while the conductive liquid phase is in non-contact with the piston 200 , The inlet of the air discharge passage (f) can be opened to discharge the residual air in the barrel through the air discharge passage (f). That is, the air discharge control rod 440 is drawn into the air discharge passage f and moves up and down on the shaft, thereby opening or closing the inlet of the air discharge passage f. The air discharge adjustment rod 440 may have a position fixing lever 441 protruded at one end and a sealing projection 442 at the other end.

Furthermore, the lever guide portion 430 may be formed on one side of the piston 200 to a predetermined length. The lever guide portion 430 can fix and support the air discharge adjusting rod 440 at a specific height in the air discharge flow passage f. The lever guide portion 430 may have a lever jaw 431 at one end and a blocking end 432 at the other end.

Hereinafter, the operation relationship according to the second embodiment will be described.

When the piston and the conductive liquid phase are in non-contact with each other as shown in Figs. 13 (a) and 14 (a), the lever jaw 431 at the end of the lever guide portion 430 is fixed The lever 441 is supported and coupled so that the air discharge adjustment rod 440 can be located at the discharge position. When the air discharge adjustment rod 440 is located at the discharge position, the residual air in the barrel 100 can be discharged to the outside through the air discharge flow path f.

On the other hand, since the piston and the barrel are in contact with each other on the side surface and are made of insulating material, the alarm sensor 500 can maintain the off state. That is, when the piston moves in the nozzle direction, the alarm sensor 500 can be kept in the off state while the residual relationship in the barrel is discharged. It is a matter of course that the residual air in the barrel can be discharged.

When the piston 200 is in direct contact with the conductive liquid phase as shown in Figs. 13 (b) and 14 (b), the air discharge adjustment rod 440 The air discharge regulating rod 440 is located at the closed position and the sealing projection 442 of the air discharge adjusting rod 440 is connected to the inlet of the air discharge flow passage f So that the inlet of the air discharge passage (f) can be closed to seal the air discharge passage (f).

At this time, the alarm sensor 500 can provide information on when the changeover from the residual air discharge position to the closed position is necessary. It can be seen that the alarm sensor 500 is made conductive through the barrel and the conductive liquid phase. In this case, it is possible to inform that the residual air in the barrel is completely discharged through the alarm. Also, by controlling the position of the air discharge adjustment rod 440 automatically in accordance with the conduction, it is possible to provide the sealed position.

Thus, according to the second embodiment, it is possible to provide the user with information on the changing point of the discharge position and the closing position, as well as the convenience by implementing the use automation.

Hereinafter, an operation method according to the first embodiment will be described.

FIG. 15 is a flowchart showing an operation method of the dispenser 10 according to the first embodiment of the present invention. It is needless to say that the operation method described with reference to FIG. 15 can be applied to the first and second modified examples as well as the first embodiment of the present invention.

15, a method of operating the dispenser 10 according to an embodiment of the present invention includes a step S110 of pressing the liquid phase toward the nozzle 110, a step S120 of discharging the residual air in the barrel 100 And a step S130 in which the liquid phase is ejected through the nozzle 110.

It may include a preparation step before performing step S110. As a preparation step, the material to be discharged can be put into the barrel 100. [ In this case, the material may be in the form of powder or a lump, and the heater 600 may be operated to melt the material inside the barrel 100 to make the contents at a constant temperature. After the material is completely melted, the piston 200 in the bin 100 can be inserted. The material accommodated in the barrel may be selected among materials for 3D printing. It goes without saying that a material prepared in advance in liquid form can also be provided in the barrel.

The liquid phase contained in the barrel 100 is pressurized in the nozzle direction by the piston head 220 which is provided at one side of the pusher 210 and the pusher 210 and presses the pusher 210 in the direction of the nozzle 110, can do.

In step S120, residual air in the barrel 100 may be discharged through the gap between the pusher 210 and the piston head 220. [

The displacement between the pusher 210 and the piston head 220 may be sealed by the repulsive force applied by the liquid phase to the pusher 210 in the direction of the piston head 220 when the pusher 210 is in direct contact with the liquid phase have. In step S130, the liquid phase may be discharged through the nozzle 110. [

16 is a flowchart showing an operation method of the dispenser 10 according to the second embodiment of the present invention.

16, a method of operating the dispenser 10 according to another embodiment of the present invention includes the steps of pressing the liquid phase toward the nozzle 110 (S210), discharging the residual air in the barrel 100 (S220 And S230 indicating direct contact between the piston 200 and the conductive liquid phase and sealing the inlet of the air discharge passage f to the air discharge control rod 440 can do.

Step S210 may correspond to steps S110 and S220.

In step S230, the alarm sensor 500 can detect whether the piston 200 is in direct contact with the conductive liquid. That is, the conductive surface of the piston 200 is electrically connected to the conductive liquid by direct contact, so that the alarm sensor 500 can sense this by energization.

In step S230, when the piston 200 is in direct contact with the conductive liquid phase, the inlet of the air discharge passage f may be sealed by the air discharge adjustment rod 440. That is to say, by closing the inlet of the air discharge passage (f) with the air discharge control rod (440) as the piston (200) and the conductive liquid phase directly contact the residual air in the barrel (100) A larger force can be applied to the liquid phase by widening the contact surface between the liquid crystal layer 200 and the liquid phase.

According to the first embodiment, the modifications thereof, and the second embodiment described with reference to Figs. 1 to 16, by using the difference in specific gravity between the liquid phase and the residual air in the barrel 100, The air can be easily discharged to the outside by using the small specific gravity characteristic of the residual air. This can provide better printing quality.

According to the second embodiment, the presence or absence of the remaining amount of air in the dispenser 10 can be easily confirmed, and when the remaining amount of air is exhausted to the outside, the air discharge passage f is sealed, It is possible to uniformly apply force to the conductive liquid phase over the entire surface by increasing the contact area, so that the discharge amount of the conductive liquid phase discharged through the nozzle 110 can be more easily controlled.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. It will also be appreciated that many modifications and variations will be apparent to those skilled in the art without departing from the scope of the invention.

10: Dispenser
100: barrel 110: nozzle
200: piston 210: pusher
211: One side of the pusher
220: Piston head 221: One side of the piston head
230:
231: First face of the clearance adjusting groove
232: second side of the clearance adjustment groove
240: Piston rod
250: fastener 251: fastener head
252: fastener body 253: first side of fastener
254: second side of fastener
330: Snap-fit guide
331a to 331c:
340: snap fit 341: first stop jaw
342: second stop jaw
350: snap fit
351a to 351b:
430: lever guide portion
440: air discharge adjustment rod 441: position fixing lever
442:
500: Alarm sensor
f: Air discharge channel g: Step

Claims (12)

A barrel having a nozzle for discharging a liquid phase at one end thereof and containing the liquid phase; And
A piston including a pusher which is in direct contact with the liquid contained in the barrel so as to press the liquid phase in the direction of the nozzle and a piston head which is provided on one side of the pusher and presses the pusher in the direction of the nozzle, ,
Wherein the pusher is moved relative to the piston head so as to be positioned at the discharge position or the closed position in accordance with the repulsive force that the liquid phase provides to the pusher by the pressure,
Wherein the pusher is spaced apart from the piston head by a predetermined distance so that residual air in the barrel is discharged to the outside when the pusher is located at the discharge position,
Wherein when the pusher is in the closed position, the gap between the pusher and the piston head is sealed so that the liquid phase is discharged externally only through the nozzle. The method according to claim 1,
The piston head has a clearance adjusting groove formed therein at a predetermined depth,
The piston further includes a fastener having one end fixedly coupled to one side of the pusher and the other end extending toward the inside of the clearance adjusting groove, the depth being different depending on the discharge position or the closed position,
Wherein a distance between one surface of the clearance adjusting groove and one surface of the fastening opening opposite to the one surface of the clearance adjusting groove is longer than a predetermined distance between the pusher and the piston head. The method according to claim 1,
Wherein the pusher is located in the closed position with respect to the piston head if the repulsive force is greater than a reference repulsive force,
Wherein the pusher is located at the discharge position with respect to the piston head when the repulsive force is less than the reference repulsive force. The method according to claim 1,
Wherein one face of the pusher and one face of the piston head facing one face of the pusher are spaced apart by the predetermined distance in the pressing direction when the pusher is located at the discharge position. The method according to claim 1,
The piston having one end coupled to the pusher and the other end having a first latching jaw and a second latching jaw and configured to adjust a relative position between the pusher and the piston head,
When the pusher is located at the discharge position, the end face of the piston head supports the second latching jaw so that the pusher and the piston head are separated from each other by a predetermined distance,
Wherein a cross-section of the piston head supports the first latching jaw such that the spacing between the pusher and the piston head is sealed when the pusher is in the closed position. 6. The method of claim 5,
A snap fit guide hole is formed inside the piston head,
The snap fit moves within the snap fit guide aperture
Wherein a distance between the pusher and the piston head is adjusted by a step between the first engaging jaw and the second engaging jaw. The method according to claim 1,
Wherein the piston further includes a snap fit for adjusting a relative position between the pusher and the piston head, one end of the piston being engaged with the pusher and the other end having a latching jaw,
The piston head may further include an engaging jaw seating surface provided on an outer periphery of the piston head to engage with the engaging jaw,
When the pusher is positioned at the discharge position, the engaging jaw receiving surface and the engaging jaw are disengaged, and the pusher and the piston head are separated from each other by a predetermined distance,
Wherein when the pusher is in the closed position, the engagement jaw is engaged with the engagement jaw seating surface to seal the gap between the pusher and the piston head. A barrel having a nozzle for discharging a conductive liquid phase at one end thereof and accommodating the conductive liquid phase;
A piston insulated from an inner surface of the barrel by pressing and discharging the conductive liquid phase received in the barrel toward the nozzle; And
And an alarm sensor for indicating whether the piston and the conductive liquid phase are in direct contact with each other depending on whether or not the piston and the barrel are energized. 9. The method of claim 8,
An air discharge passage for discharging the air inside the barrel to the outside is provided at one end of the piston,
Wherein the piston further includes an air discharge adjustment rod that moves relative to the piston in the air discharge passage,
Wherein the air discharge control rod closes an inlet of the air discharge passage when the piston and the conductive liquid phase are in direct contact with each other and opens the inlet of the air discharge passage when the piston and the conductive liquid phase are not in contact with each other And discharging the residual air in the barrel through the air discharge passage. Pressing the liquid phase received in the barrel in the direction of the nozzle through a pusher and a piston head provided at one side of the pusher;
Discharging residual air in the barrel through a gap between the pusher and the piston head; And
And wherein when the pusher is in direct contact with the liquid phase, the spacing is sealed by a repulsive force applied by the liquid phase to the pusher in the direction of the piston head, and the liquid phase is discharged through the nozzle. Pressing the conductive liquid phase contained in the barrel with the piston in the direction of the nozzle;
Discharging residual air in the barrel through an air discharge passage provided at one end of the piston; And
Wherein an alarm sensor is energized to indicate direct contact of the piston with the conductive liquid phase. 12. The method of claim 11,
Wherein the piston further includes an air discharge adjustment rod that moves relative to the piston in the air discharge passage,
Further comprising the step of sealing the inlet of the air discharge passage with the air discharge adjusting rod when the piston and the conductive liquid phase are in direct contact with each other.

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