CN212524757U

CN212524757U - Syringe unit

Info

Publication number: CN212524757U
Application number: CN202020751565.4U
Authority: CN
Inventors: 金熙根; 曹银吉
Original assignee: Top Engineering Co Ltd
Current assignee: Top Engineering Co Ltd
Priority date: 2019-05-10
Filing date: 2020-05-09
Publication date: 2021-02-12
Anticipated expiration: 2030-05-09
Also published as: KR200493396Y1; KR20200002514U

Abstract

The utility model provides a be provided with syringe unit of chamber extension portion, syringe unit includes: a first body provided with a chamber capable of containing a viscous liquid therein; a nozzle connected to the chamber so as to be capable of ejecting the viscous liquid contained in the chamber; a cover disposed over the first body; and a chamber expansion part disposed between the first body and the cover to expand a capacity of the chamber.

Description

Syringe unit

Technical Field

The present invention relates to a syringe unit provided with a chamber expansion portion for ejecting a viscous liquid received from a syringe toward an ejection target.

Background

In general, in a manufacturing process of electronic devices such as flat panel displays, semiconductor packages, and the like, processes such as attaching of parts to each other, fluid filling, and the like are performed.

Flat Panel Displays (FPDs), such as Liquid Crystal Displays (LCDs), Organic Light Emitting Diodes (OLEDs), and the like, are manufactured by bonding two Flat panels. In order to adhere the two plates, a viscous liquid such as Paste (Paste) or Sealant (Sealant) is dispensed to either plate using a dispenser.

On the other hand, in manufacturing a semiconductor package, Epoxy (Epoxy) is dispensed through a dispenser in a die bonding process. When a viscous liquid is dispensed from a dispenser, a syringe for storing the viscous liquid is attached to the dispenser and used. It is necessary to replace the syringe with a new one before the viscous liquid filled in the dispenser is completely consumed or consumed.

The syringe storing the viscous liquid can be replaced by manual work by an operator or by a partially automated syringe replacement system.

As an example, korean laid-open patent publication No. 10-2011-0066713 (publication 2011.06.17) of the present applicant discloses a syringe replacement system for automatically replacing a syringe and a paste dispenser including the syringe replacement system.

However, when the syringe is replaced by manual operation, direct operator involvement is required, which is inconvenient and requires a long replacement time. In addition, in the case of automatic replacement of the syringe, there may be a problem in that the process of recognizing the syringe and detaching and attaching the syringe from the head unit of the dispenser is not accurately performed.

In order to solve such problems, the present applicant filed "syringe unit exchanging apparatus and method and viscous liquid dispenser provided with the same" in korean laid-open patent publication No. 10-2017-. According to the above-mentioned patent publication, a configuration is disclosed in which the syringe stored in the syringe storage rack is replaced by the syringe unit replacement device.

Documents of the prior art

Patent document

Patent document 1: korean laid-open patent publication No. 10-2017-0134088 (2017.12.06 publication)

However, in patent document 1, since the syringe itself is replaced in a state where the syringe fixing portion into which the syringe is inserted is directly fixed to the head unit of the dispenser, there is a problem that the operation is interrupted when the nozzle for ejecting the syringe needs to be changed or when the syringe fixing portion and the like need to be cleaned.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to solve the above-mentioned problems and to provide an injector unit capable of realizing more precise ejection control without delay of operation.

In addition, the present invention provides a syringe unit provided with a chamber expansion portion which can increase a volume which can be ejected once as required to eject a viscous liquid by expanding a chamber volume of the syringe unit.

In order to achieve the foregoing object, the present invention provides a syringe unit provided with a chamber expansion part, the syringe unit including: a first body provided with a chamber capable of containing a viscous liquid therein; a nozzle connected to the chamber so as to be capable of ejecting the viscous liquid contained in the chamber; a cover disposed over the first body; and a chamber expansion part disposed between the first body and the cover to expand a capacity of the chamber.

The chamber expansion unit may be provided with a storage chamber that is adapted to the chamber and is capable of storing a viscous liquid therein.

In addition, the accommodation chamber may be a through structure that extends the accommodation capacity of the viscous liquid above the chamber and penetrates up and down.

Further, a syringe mounting portion main body may be coupled to an outer side of the chamber expansion portion, and a syringe mounting portion may be provided in the syringe mounting portion main body, and a syringe filled with a viscous liquid may be coupled to the syringe mounting portion.

In addition, the viscous liquid of the syringe may be filled from the chamber into the accommodating chamber.

The syringe unit may further include a second body coupled to the first body, the second body having a smaller area than the first body, and the nozzle may be provided to discharge the viscous liquid to a discharge target.

In addition, a water level sensing window may be provided at the cover.

In addition, a water level sensing sensor for sensing the level of the viscous liquid in the chamber may be provided above the water level sensing window.

In addition, a first joint portion that communicates with the chamber and supplies air pressure to the chamber may be provided at one side end portion of the cover.

In addition, a second joint portion communicating with the syringe and a third joint portion communicating with the chamber may be provided in the first body and the second body, and the second joint portion and the third joint portion may be connected by joint lines.

In addition, a diaphragm may be provided inside the second body, and the diaphragm may open and close a connection flow path connecting the chamber and the third joint.

Further, the diaphragm may block the connection flow path by being pressurized by a valve operating pin that pressurizes the diaphragm by a pressurizing operation of a pin actuator.

In addition, the second body may be provided with a first jig supporting portion and a second jig supporting portion.

In addition, when the syringe unit is replaced, the first jig support portion and the second jig support portion may be held between the first jig and the second jig in a state of being inserted into insertion grooves provided in surfaces of the first jig and the second jig of the syringe unit replacement device that face each other.

The first jig supporting portion and the second jig supporting portion may be formed in a pair of bar shapes protruding from one side surface of the second body.

In addition, a protruding bar-shaped connecting portion that is coupled to a fixing device may be provided at a position on the first body opposite to the first jig supporting portion.

According to the utility model discloses, the viscous liquid that will store in the syringe supplies to the cavity, and the viscous liquid that the blowout stores in the cavity to have the advantage that can realize more accurate blowout control.

In addition, according to the utility model discloses, the syringe unit is provided with the chamber that can dismantle and expands the portion to have the advantage that can expand the chamber capacity of syringe unit.

In addition, the present invention has an effect that the capacity of the chamber can be expanded only by installing the chamber expansion part between the cover and the first body without a structural change of the syringe unit.

Drawings

Fig. 1 is a diagram showing a viscous liquid dispenser including a syringe unit and a syringe unit replacement device.

Fig. 2 is a perspective view of a syringe unit including a chamber extender of a preferred embodiment of the present invention.

Fig. 3 is a view showing a process of installing the chamber expansion part in the syringe unit according to the preferred embodiment of the present invention.

Fig. 4 is a side view showing the chamber expansion part of the syringe unit according to the preferred embodiment of the present invention before and after installation.

Fig. 5 is a front perspective view showing a discharge part of a syringe unit according to a preferred embodiment of the present invention.

Fig. 6 is a rear perspective view showing a discharge part of the syringe unit according to the preferred embodiment of the present invention.

Fig. 7 is a perspective view showing a discharge portion of a syringe unit according to a preferred embodiment of the present invention.

Fig. 8 is a diagram showing a diaphragm valve structure attached to a supply path of a viscous liquid in the syringe unit according to the preferred embodiment of the present invention.

Fig. 9 is a diagram showing a state in which the movement of the viscous liquid is cut by the diaphragm valve structure in the syringe unit according to the preferred embodiment of the present invention.

Fig. 10 is a view showing a retreated state of the pin actuator in the syringe unit according to the preferred embodiment of the present invention.

Fig. 11 is a view showing a process of opening a connection flow path and supplying a viscous liquid to a chamber as a valve operating pin pressurizing a diaphragm retreats from the diaphragm away from a pin actuator in an injector unit according to a preferred embodiment of the present invention.

Fig. 12 is a diagram showing a syringe unit separation process performed by the syringe unit exchanging apparatus according to the preferred embodiment of the present invention.

Fig. 13 is a view showing a state before the connection part of the syringe unit of the preferred embodiment of the present invention is coupled to the head unit.

Fig. 14 is a view showing a state where the connection part of the syringe unit of the preferred embodiment of the present invention enters the flat plate of the head unit.

Fig. 15 is a view showing a state in which the connection portion of the syringe unit of the preferred embodiment of the present invention is located at the clamping portion of the chuck of the head unit.

Fig. 16 is a view showing a state in which the connection portion of the syringe unit is clamped by the clamping portion of the chuck of the head unit according to the preferred embodiment of the present invention.

Description of the reference numerals

10: a viscous liquid dispenser; 20: a frame; 30: a head support frame; 40: a head unit; 50: a work table; 60: a machine guide rail; 100: a syringe unit replacement device; 101: a first clamp; 102: a second clamp; 200: a syringe unit storage rack; 300: an injector unit; 310: an injector; 320: a discharge section; 321: a nozzle carrier; 321 a: a first body; 321b, and 2: a second body; 321c, and (2): a syringe mounting section; 321e, 321 e: a fixing hole; 321 f: a pin hole; 321 g: a syringe mounting section body; 322: a cover; 324: a first clamp support; 326: a second clamp support; 328: a connecting portion; 328 a: a groove; 331: a first joint portion; 332: a second joint portion; 333: a third joint portion; 334: a joint line; 340: a chamber; 342: a water level sensing window; 344: a nozzle; 351: a valve operating pin; 352: a pin actuator; 354: a diaphragm; 355: a connecting flow path; 357: a flow path; 360: a chamber expansion section; 361: a housing chamber; 400: ejecting the object; 510: a chuck; 510 a: a clamping portion; 520: a flat plate; 524: a through hole; f: viscous liquid moving path.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, it should be noted that, in the reference numerals of the constituent elements in each drawing, the same reference numerals are used as much as possible for the same constituent elements even if they are shown in different drawings. In addition, preferred embodiments of the present invention will be described below, but the technical idea of the present invention is not limited or restricted thereto, and can be naturally implemented in various ways by being modified by those skilled in the art.

Before describing the present invention, a mechanism of a conventional syringe unit and a syringe unit replacement device will be described to assist technical understanding.

As shown in fig. 1, a viscous liquid dispenser 10 includes: a frame 20; a table 50 provided on the frame 20 and on which an object such as a substrate to which a viscous liquid is to be dispensed is mounted; a head support frame 30 provided across the upper side of the table 50; a head unit 40 provided to be movable in an X-axis direction following the head support frame 30; an injector unit 300 attached to the head unit 40 and storing and discharging a viscous liquid; and a syringe unit replacement device 100 for performing replacement of the syringe unit 300. For example, the head support 30 may be driven in the Y-axis direction.

In addition, a machine guide 60 is provided at one side of the frame 20, and the syringe unit exchanging device 100 may be provided to be movable along the machine guide 60. The syringe unit storage rack 200 for storing the syringe units 300 before and after replacement may be provided at a position where the syringe unit replacement device 100 can approach.

When the amount of the viscous liquid stored in the syringe unit 300 attached to the specific head unit 40, specifically, the amount of the viscous liquid stored in the syringe 310 of the syringe unit 300 described later is reduced to a predetermined value or less, replacement of the syringe unit 300 can be performed. Alternatively, when the type of viscous liquid to be preliminarily ejected is changed, the syringe unit 300 can be replaced.

In one embodiment, the head unit 40 requiring replacement of the syringe unit 300 is moved to one side of the head support frame 30, and replacement of the syringe unit 300 may be performed by the syringe unit replacement device 100. On the other hand, the other head unit 40 not replaced may continue to eject the viscous liquid onto the substrate mounted on the table 50. Fig. 1 exemplarily shows that the syringe unit 300 is replaced for two head units 40 positioned on the left side of the head holder 30, and the viscous liquid is ejected from the remaining head units 40.

Before describing the detailed structure of the syringe unit of the present invention, the basic structure and operation of the syringe unit of the present invention will be described with reference to fig. 5, in which the viscous liquid stored in the syringe 310 is transferred to the chamber 340 formed inside the spouting portion 320 and temporarily stored, and the viscous liquid temporarily stored in the chamber 340 is spouted through the nozzle 344.

The syringe unit of the present invention is characterized in that, based on the configuration shown in fig. 5, the viscous liquid stored in the syringe 310 is ejected through the nozzle 344 via the chamber 340 of the ejection portion 320, and the chamber expansion portion 360 is additionally provided, thereby increasing the accommodation space of the chamber 340.

Fig. 2 is a perspective view of a syringe unit including a chamber expansion part according to a preferred embodiment of the present invention, and fig. 3 is a view showing a process of mounting the chamber expansion part in the syringe unit according to the preferred embodiment of the present invention. Fig. 4 is a side view showing the chamber expansion unit of the syringe unit according to the preferred embodiment of the present invention before and after installation.

Referring to fig. 2, in the present invention, the syringe unit 300 includes a syringe 310 and a discharge portion 320. The syringe unit 300 can be replaced by the syringe unit replacement device 100.

The ejection part 320 includes a nozzle holder 321 and a cap 322. The nozzle bracket 321 includes a first body 321a and a second body 321 b.

In the present invention, the chamber expansion portion 360 is combined between the cover 322 and the first body 321 a. The chamber expansion 360 is coupled between the cap 322 and the first body 321a of the chamber 340 (refer to fig. 4) by coupling the chamber expansion 360 between the cap 322 and the first body 321 a. In one embodiment, a Sealing (Sealing) member such as an O-ring (O-ring) may be disposed at a joint portion where the chamber expansion portion 360 and other members are joined for Sealing.

The chamber expansion portion 360 is provided with a storage chamber 361 therein. When the chamber expansion part 360 is coupled between the cover 322 and the first body 321a, the receiving chamber 361 may be connected to the chamber 340 to provide an expanded receiving space capable of receiving a viscous liquid. For example, the accommodation chamber 361 may be a space penetrating vertically so as to be vertically matched with the chamber 340.

When the chamber expansion part 360 is coupled between the cap 322 and the first body 321a, the syringe mounting part body 321g including the syringe mounting part 321c coupled to the first body 321a may be coupled to the chamber expansion part 360 after being separated from the first body 321 a.

In a state where the syringe 310 is coupled to the syringe mounting portion 321c, the viscous liquid of the syringe 310 is supplied to the chamber 340 through the joint line 334. Thereafter, the viscous liquid fills the chamber 340 and the containing chamber 361 above the chamber.

Thus, the syringe unit 300 of the present invention can accommodate a larger amount of viscous liquid corresponding to the space of the accommodation chamber 361 of the expanded space of the chamber 340.

In one embodiment, it is preferable that the receiving chamber 361 is formed as a larger space than the chamber 340. For this, the chamber expansion part 360 may be formed to have a height higher than that of the first body 321 a.

There is no limitation in the outer shape of the chamber expansion part 360, but it is preferable that the outer shape of the chamber expansion part 360 is formed to match the outer shape of the first body 321 a. For example, the chamber expansion 360 may be formed of a hollow cylindrical shape. For example, the accommodation chamber 361 provided inside the chamber expansion portion 360 may have a duct (duct) shape that penetrates both the upper and lower portions.

When the chamber extension 360 is coupled to the first body 321a, the accommodation capacity of the viscous liquid corresponding to the accommodation chamber 361 is increased by a factor together with the chamber 340, and a larger amount of viscous liquid than before can be accommodated.

When the viscous liquid is discharged to the upper side of the substrate or the like, it is preferable that the viscous liquid is supplied from the syringe 310 to the chamber 340 in one discharge portion and then the discharge is completed without additional supply. However, when the total amount of the viscous liquid for one ejection portion exceeds the amount that can be stored in the chamber 340, it is necessary to increase the storage capacity of the viscous liquid by mounting the chamber expansion portion 360 to the syringe unit 300 in advance.

That is, according to the present invention, the volume of the chamber 340 for temporarily storing the viscous liquid supplied from the syringe 310 can be changed, thereby providing an advantage that the operation of ejecting the viscous liquid can be more effectively adjusted.

Next, an installation process of the chamber expansion unit according to a preferred embodiment of the present invention will be described with reference to fig. 3.

Fig. 3 (a) shows a state before the chamber expansion portion 360 is coupled, in which the cap 322 is coupled to the upper side of the first body 321 a. For example, the cover 322 and the first body 321a may be coupled by bolts.

When the capacity of the chamber 340 is to be expanded in a state where the cap 322 is coupled to the first body 321a, the cap 322 coupled to the first body 321a of the chamber 340 is separated as shown in fig. 3 (b).

As shown in fig. 3 (c), the syringe mounting portion body 321g coupled to the first body 321a is also separated. For example, the syringe mounting portion body 321g and the first body 321a may be coupled by bolts.

As shown in fig. 3 (d), after separating the cap 322 and the syringe mounting portion body 321g from the first body 321a, the chamber expansion portion 360 is located between the cap 322 and the first body 321 a.

As shown in fig. 3 (e), the top surface of the chamber expansion 360 and the bottom surface of the cover 322 are closely coupled, and the bottom surface of the chamber expansion 360 and the top surface of the first body 321a are closely coupled. For example, the chamber expansion portion 360 may be coupled to the cover 322 and the first body 321a by a coupling member such as a bolt.

The syringe mounting portion body 321g coupled to the first body 321a is coupled to the chamber expansion portion 360. For example, the first body 321a and the chamber expansion portion 360 may be coupled to each other by a coupling member such as a bolt.

Although not shown in detail in the drawings, the syringe mounting portion body 321g and the chamber 340 may be connected by an additional flow path so that the viscous liquid inside the syringe 310 can move toward the chamber 340.

Before and after the chamber expansion part according to a preferred embodiment of the present invention is installed, it will be described with reference to fig. 4.

Fig. 4 (a) shows a state before the chamber expansion portion 360 is coupled, in which the cap 322 is coupled to the top surface of the first body 321 a. The syringe mounting portion body 321g is coupled to the outside of the first body 321 a.

Fig. 4 (b) shows a state in which the chamber expansion portion 360 is coupled between the cap 322 and the first body 321 a. In a state where the chamber expansion portion 360 is coupled between the cover 322 and the first body 321a, the accommodation chamber 361 inside the chamber expansion portion 360 coincides with the chamber 340 inside the first body 321 a.

From fig. 4 (b), it can be confirmed that the containing capacity of the viscous liquid is increased by the amount of the containing chamber 361 over the chamber 340.

Fig. 5 is a front perspective view showing a spouting portion of a syringe unit according to a preferred embodiment of the present invention, and fig. 6 is a rear perspective view showing the spouting portion of the syringe unit according to the preferred embodiment of the present invention. Fig. 7 is a perspective view showing a discharge portion of a syringe unit according to a preferred embodiment of the present invention.

Fig. 5 and 6 show a state where the chamber extension 360 is not additionally attached, and fig. 7 shows a state where the chamber extension 360 is additionally attached. The embodiment of fig. 5 and 6 is different from the embodiment of fig. 7 only in the presence or absence of the chamber expansion portion 360, and the filling and ejection control of the viscous liquid is performed in the same manner.

The ejection part 320 includes a nozzle holder 321 and a cap 322. The nozzle bracket 321 includes a first body 321a and a second body 321 b. When the chamber expansion unit 360 is attached to the discharge unit 320, the chamber expansion unit 360 is coupled between the cover 322 and the first body 321a, and the syringe mounting portion body 321g is coupled to the outside of the chamber expansion unit 360.

The syringe mounting portion 321c is provided in the syringe mounting portion body 321 g. The lower part of the syringe 310 is correspondingly coupled to the syringe mounting portion 321 c.

A chamber 340 storing a viscous liquid supplied from the syringe 310 is provided inside the first body 321 a.

The chamber 340 is preferably formed to have a smaller capacity than that of the syringe 310. For example, the volume of the chamber 340 may be 1/5-1/20 of the volume of the syringe 310. If the filling amount of the viscous liquid inside the chamber 340 is reduced to be lower than the set water level, the viscous liquid stored in the syringe 310 may be supplied to the chamber 340.

Since the chamber 340 has a smaller capacity than the syringe 310, the discharge of the viscous liquid can be finely and precisely controlled. That is, since the pressure of the air supplied to the chamber 340 is controlled to control the supply of the viscous liquid from the chamber 340 to the nozzle 344, the volume of the chamber 340 is small, and thus there is an advantage that the pressure control can be made finer.

The second body 321b may be formed to extend downward of the first body 321 a. The second body 321b may be formed to have a sectional area smaller than that of the first body 321 a.

A nozzle 344 is provided at the bottom end of the second body 321 b. The nozzle 344 is located at the lower end of the chamber 340 and receives the viscous liquid from the chamber 340 or the viscous liquid from the chamber 340 through an additional flow path.

A first jig supporting portion 324 and a second jig supporting portion 326 are provided on the front surface of the first body 321 a. The first jig supporting portion 324 and the second jig supporting portion 326 may be arranged in pairs. The first jig supporting portion 324 and the second jig supporting portion 326 may be formed on one surface of the first body 321a to protrude toward the syringe unit exchanging device 100.

In fig. 5 and 6, the first jig supporting portion 324 and the second jig supporting portion 326 are shown to be arranged vertically, but in the embodiment of the present invention, the first jig supporting portion 324 and the second jig supporting portion 326 may be arranged horizontally. In the case where the first jig supporting part 324 and the second jig supporting part 326 are arranged left and right, the left and right width of the first body 321a may be formed to be larger than that shown in fig. 5 and 6.

A water level sensing window 342 that senses the level of the viscous liquid filled in the chamber 340 may be provided at the cover 322. The water level sensing window 342 is provided as a transparent window, and a water level sensing sensor (not shown) using light may be provided above the water level sensing window 342.

The water level sensing sensor may be a laser distance sensor, and may irradiate and receive light through the water level sensing window 342, so that the viscous liquid level of the sensing chamber 340 may be sensed.

A first joint portion 331 communicating with the chamber 340 may be provided at one side end of the cap 322. The air pressure may be supplied to the inside of the chamber 340 through the first joint portion 331. The viscous liquid in the syringe 310 is transferred into the chamber 340, and the pressure of the air is supplied into the chamber through the first joint 331, so that the viscous liquid stored in the chamber 340 can be discharged or stopped from being discharged through the nozzle 344. That is, when a positive pressure is supplied into the chamber 340, the viscous liquid in the chamber 340 is discharged through the nozzle 344, and when a negative pressure is supplied into the chamber 340, the supply of the viscous liquid to the nozzle 344 is interrupted.

A second joint portion 332 may be provided at one surface of the first body 321 a. The second joint portion 332 communicates with the syringe 310 coupled to the syringe mounting portion 321c of the first body 321 a.

A third joint part 333 may be provided on one surface of the second body 321 b. The second joint portion 332 and the third joint portion 333 are connected by a joint line 334. The junction line 334 provides a flow path for the viscous liquid to flow. Viscous liquid inside the syringe 310 may be supplied to the chamber 340 along the connector line 334. The viscous liquid supplied to the chamber 340 fills the accommodation chamber 361 after the chamber 340 is fully filled.

The third joint part 333 communicates with a chamber 340 provided inside the first body 321 a. The third joint part 333 may be located between the second joint part 332 and the first jig support part 324.

The viscous liquid inside the syringe 310 moves along the viscous liquid moving path f as shown by the arrow in fig. 7. Specifically, the viscous liquid inside the syringe 310 moves to the chamber 340 through the second joint part 332, the joint line 334, and the third joint part 333. When the chamber 340 is filled with the viscous liquid, the viscous liquid moves toward the accommodation chamber 361.

A connection portion 328 is provided on the rear surface of the first body 321 a. The connection portion 328 may be configured in a bar shape.

A groove 328a may be formed on the outer circumferential surface of the connection portion 328. When the connection portion 328 is coupled to the fixture 500, a clamping portion such as a plurality of jaws (jaw) provided in the chuck 510 of the fixture 500 is inserted into the groove 328a, and a strong coupling state can be formed.

A fixing hole 321e and a pin hole 321f are provided on the rear surface of the first body 321a where the connection portion 328 is provided. For example, the fixing hole 321e and the pin hole 321f may be located above the connecting portion 328, and the pin hole 321f may be located below the fixing hole 321 e. The pin hole 321f may be formed in plural.

Next, a process of filling the chamber and the housing chamber with the viscous liquid will be briefly described.

Referring to fig. 7, the viscous fluid in the large-capacity syringe 310 is transferred into the chamber 340, so that the small-amount ejection control can be performed. The viscous liquid stored in the syringe 310 may be paste (sealant) for bonding a flat display panel formed by bonding two substrates, epoxy resin for a die bonding process, or the like.

To fill the chamber 340 with a viscous liquid, air pressure is supplied to the interior of the syringe 310. As the air pressure is supplied to the inside of the syringe 310, the viscous liquid inside the syringe 310 is filled into the chamber 340 through the flow paths such as the second joint 332, the joint line 334, the third joint 333, and the like that connect the syringe 310 and the chamber 340. The viscous liquid is filled from the chamber 340 into the accommodation chamber 361.

For example, a valve capable of controlling the flow of the viscous liquid may be provided in the viscous liquid moving path f.

Next, a viscous liquid ejecting process will be briefly described.

In a state where the viscous liquid is filled in the chamber 340 and the accommodating chamber 361, the air pressure is supplied to the first joint portion 331. As the air pressure is supplied to the inside of the first joint 331 communicating with the storage chamber 361, the viscous liquid filled in the storage chamber 361 and the chamber 340 is ejected to the ejection target 400 through the nozzle 344 via the flow path 357 connecting the chamber 340 and the nozzle 344.

Next, a process of supplying the viscous liquid of the syringe to the chamber will be described. In the following description, an example in which a diaphragm valve structure is applied to control the flow of the viscous liquid in the viscous liquid movement path f will be described. However, in the embodiment of the present invention, the valve structure for controlling the flow of the viscous liquid in the viscous liquid moving path f may be a diaphragm valve structure.

Fig. 8 (a) shows the pin actuator 352 in a state of pressurizing the valve operating pin 351. Fig. 8 (b) shows a state where the diaphragm 354 is mounted in the second body 321b together with the valve operating pin 351.

As shown in fig. 9, the pin actuator 352 pressurizes the valve operating pin 351, and the valve operating pin 351 pressurizes the diaphragm 354, thereby shutting off the connection flow path 355 connected to the chamber 340. Therefore, the viscous liquid of the syringe 310 cannot be supplied to the chamber 340.

Fig. 10 is a view showing a state where a pin actuator of a diaphragm valve structure in an injector unit according to a preferred embodiment of the present invention is retracted.

As shown in fig. 10, in order to open the connection flow path 355, the pin actuator 352 that is pressurizing the valve operating pin 351 is retracted, and the pressurized state of the valve operating pin 351 is released. In the pressure release state of the valve operating pin 351, the pin actuator 352 is spaced apart from the valve operating pin 351 by a predetermined distance.

As shown in fig. 11, in order to fill the chamber 340 with the viscous liquid, air pressure is supplied to the inside of the syringe 310. As the air pressure is supplied to the inside of the syringe 310, the viscous liquid inside the syringe 310 moves along the flow path such as the second joint portion 332, the joint line 334, the third joint portion 333, and the like connecting the syringe 310 and the chamber 340.

As the pin actuator 352 retreats, the pressurized state of the diaphragm 354 of the valve operating pin 351 is released. In this state, as shown by the arrow in fig. 11, the shut-off state in which the diaphragm 354 blocking the connection flow path 355 is pressed by the viscous liquid supplied through the third joint part 333 and connects the connection flow path 355 is naturally released. Accordingly, the viscous liquid is supplied along the connecting flow path 355 to the chamber 340 connected to the connecting flow path 355.

On the other hand, in order to supply the viscous liquid of the syringe 310 to the chamber 340, air pressure is applied to the syringe 310. When air pressure is applied to the syringe 310, the viscous liquid of the syringe 310 is supplied to the chamber 340 through the second joint part 332, the third joint part 333 of the joint line 334, and the third joint part 333 along the connection flow path 355 connecting the third joint part 333 and the chamber 340.

Next, a process of separating the syringe unit by the syringe unit exchanging apparatus will be described.

As shown in fig. 12, in the viscous liquid dispenser 10, the syringe unit 300 coupled to the head unit 40 is replaced by the syringe unit replacement device 100.

As shown in fig. 12 (a), the first jig support portion 324 and the second jig support portion 326 of the syringe unit 300 are simultaneously gripped by the first jig 101 and the second jig 102 of the syringe unit exchanging apparatus 100.

As shown in fig. 12 (b), the first jig 101 and the second jig 102 are pulled, and the syringe unit 300 is separated from the coupling region of the head unit 40. The connection portion 328 engaged with the grip portion 510a of the chuck 510 is separated from the grip portion 510a, and the fixed state of the syringe unit 300 is released.

The syringe unit 300 should not collide with other structures during the separation process. The syringe unit 300 in a state of being held by the first and

second clamps

101 and 102 is horizontally moved and separated by the retreating operation of the first and

second clamps

101 and 102.

One ends of the first jig supporting portion 324 and the second jig supporting portion 326 are inserted into the insertion grooves 103 of the first jig 101 and the second jig 102 to form a firm clamping state, so that the syringe unit 300 can be safely separated.

The syringe unit exchange apparatus 100 places the separated old syringe unit 300 at a predetermined location, and then moves the syringe unit 300 along the machine guide 60 to the syringe unit storage rack 200. In some cases, the syringe unit storage rack 200 may store the old syringe unit 300 separated therefrom. The syringe unit exchange device 100 that has moved to the syringe unit holder 200 holds a new syringe unit 300 (see fig. 1) provided in the syringe unit holder 200.

Specifically, the syringe unit exchanging device 100 clamps the first and second

clamp supporting portions

324 and 326 of the new syringe unit 300 by the first and

second clamps

101 and 102.

The syringe unit exchanging apparatus 100 moves along the machine rail 60 toward the head unit 40. The syringe unit exchanging apparatus 100 couples the new syringe unit 300 to the coupling area of the head unit 40 which is free by removing the old syringe unit 300.

When a new syringe unit 300 is coupled to the coupling region of the head unit 40, the connection portion 328 of the new syringe unit 300 is correspondingly coupled to the clamping portion 510a of the chuck 510 of the head unit 40 and forms a firm coupling of the syringe unit 300.

Next, a process of coupling the coupling part to the chuck will be specifically described.

As shown in fig. 13, the connection portion 328 is positioned on the plate 520 before being coupled to the chuck 510. At this time, the connection portion 328 accurately coincides with the through hole 524 of the flat plate 520.

As shown in fig. 14, the connection portion 328 is inserted into the through hole 524 of the flat plate 520 in a state of being exactly aligned with the through hole 524. For smooth insertion of the connection portion 328, it is preferable that the inner diameter of the through hole 524 is larger than the outer diameter of the connection portion 328.

As shown in fig. 15, the connection portion 328 continues to move in the direction of the chuck 510 in the inserted state into the through hole 524 of the plate 520, and stops when the groove 328a of the connection portion 328 is positioned at the clamping portion 510a of the chuck 510.

As shown in fig. 16, in a state where the groove 328a of the connection portion 328 is positioned at the clamping portion 510a of the chuck 510, the connection portion 328 is clamped by the chuck 510 in a state where the tip of the clamping portion 510a is accurately fitted into the groove 328a by a clamping operation of the clamping portion 510 a.

As described above, the syringe unit of the present invention can precisely control the ejection of the viscous liquid by transferring the viscous liquid to the chamber and controlling the pressure in the chamber. Further, the capacity of the chamber for accommodating the viscous liquid of the syringe unit may be sufficient for the application of the viscous liquid having a small cross-sectional area, but in the case of the application having a large cross-sectional area, the amount of the viscous liquid such as a sealant is large, and it is necessary to expand the capacity of the chamber for accommodating the viscous liquid. According to the utility model discloses, only install the capacity that the chamber expanded portion just can expand the chamber to the basic structure of syringe unit without changing.

The utility model discloses can carry out the dismantlement of chamber extension portion, consequently when little sectional area viscous liquid coating, do not install chamber extension portion and directly combine the shroud in first main part, can only take viscous liquid with the cavity capacity of first main part and use.

The above description is merely an exemplary illustration of the technical concept of the present invention, and a person having ordinary knowledge in the art to which the present invention pertains can make various modifications, alterations, and substitutions without departing from the scope of the essential features of the present invention. Therefore, the embodiments disclosed in the present invention and the attached drawings are for illustrative purposes and are not intended to limit the technical concept of the present invention, and the scope of the technical concept of the present invention is not limited to such embodiments and the attached drawings. The scope of the invention should be construed by the claims, and all technical equivalents thereof should be construed as being included in the scope of the claims.

Claims

1. A syringe unit for ejecting a viscous liquid received from a syringe toward an ejection target object, the syringe unit comprising:

a first body provided with a chamber capable of containing a viscous liquid therein;

a nozzle connected to the chamber so as to be capable of ejecting the viscous liquid contained in the chamber;

a chamber expansion part disposed above the first body for expanding a capacity of the chamber; and

and the cover is arranged above the chamber expansion part.

2. Syringe unit according to claim 1,

the chamber expansion portion is provided with a containing chamber which is matched with the chamber and can contain viscous liquid.

3. The injector unit according to claim 2,

the accommodation chamber is a through structure which expands the accommodation capacity of the viscous liquid above the chamber and penetrates up and down.

4. Syringe unit according to claim 1,

the injector mounting part main body is combined with the outer side of the chamber expansion part,

the syringe mounting portion body is provided with a syringe mounting portion to which a syringe filled with a viscous liquid is coupled.

5. Syringe unit according to claim 4,

the viscous liquid of the syringe fills the chamber from the chamber to the receiving chamber.

6. Syringe unit according to claim 1,

the syringe unit further comprises a second body coupled to the first body,

the second body is formed to have a smaller area than the first body, and the nozzle is provided to discharge the viscous liquid to the discharge target.

7. Syringe unit according to claim 6,

a water level sensing window is provided at the cover.

8. Syringe unit according to claim 7,

a water level sensing sensor for sensing the level of the viscous liquid in the chamber is arranged above the water level sensing window.

9. Syringe unit according to claim 7,

a first joint part which is communicated with the chamber and supplies air pressure to the chamber is arranged at one side end part of the cover.

10. Syringe unit according to claim 7,

the first body and the second body are provided with a second joint part communicated with the syringe and a third joint part communicated with the chamber, and the second joint part and the third joint part are connected through joint pipelines.

11. The injector unit according to claim 10,

a diaphragm that opens and closes a connection flow path connecting the chamber and the third joint portion is provided inside the second body.

12. The injector unit according to claim 11,

the diaphragm shuts off the connection flow path under pressurization by a valve operating pin that pressurizes the diaphragm under pressurization operation by a pin actuator.

13. Syringe unit according to claim 7,

the second body is provided with a first jig supporting portion and a second jig supporting portion.

14. The injector unit according to claim 13,

when the syringe unit is replaced, the first and second jig support portions are held between the first and second jigs in a state of being inserted into insertion grooves provided in mutually facing surfaces of the first and second jigs of the syringe unit replacement device.

15. The injector unit according to claim 13,

the first jig supporting portion and the second jig supporting portion are a pair of rod shapes protruding from one side surface of the second body.

16. The injector unit according to claim 13,

a protruding rod-shaped connecting portion that is coupled to a fixing device is provided at a position on the first body opposite to the first jig supporting portion.