CN211563394U

CN211563394U - Syringe unit device

Info

Publication number: CN211563394U
Application number: CN201921160125.5U
Authority: CN
Inventors: 金熙根; 曹银吉
Original assignee: Top Engineering Co Ltd
Current assignee: Top Engineering Co Ltd
Priority date: 2018-07-23
Filing date: 2019-07-23
Publication date: 2020-09-25
Anticipated expiration: 2029-07-23
Also published as: KR20200010786A; KR102116716B1

Abstract

The utility model provides a syringe unit device, syringe unit device includes: a syringe unit comprising: an injector in which a viscous liquid is stored; and a discharge section to which the syringe is attached, which receives the viscous liquid from the syringe, and which discharges the viscous liquid; and a fixing device for fixing the ejection unit, wherein the syringe unit is integrally mounted or detachably mounted on the fixing device.

Description

Syringe unit device

Technical Field

The present invention relates to a syringe unit device for ejecting viscous liquid to an ejection target such as a flat panel display in a state of being fixed to a head unit.

Background

In general, in a manufacturing process of an electronic device such as a flat panel display or a semiconductor package, a process such as mutual adhesion of components or filling of a fluid is 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. To bond the two plates, a viscous liquid, such as Paste (Paste) or Sealant (Sealant), is dispensed onto one of the plates using a dispensing device. On the one 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. The viscous liquid filled in the dispenser is completely consumed or needs to be replaced with a new syringe before being consumed.

Replacement of the syringe holding the viscous liquid may be performed manually by an operator, or may be performed by a partially automated syringe replacement system. As an example, a syringe exchange system for automatically exchanging a syringe and a paste dispenser including the same are disclosed in Korean laid-open patent publication No. 10-2011-0066713 (2011.06.17, publication) filed by the present applicant.

However, when the syringe is replaced by manual operation, the operator is required to directly participate, which is inconvenient and takes a lot of replacement time. In addition, there is also a problem in that the process of identifying and removing and mounting the syringe from the head unit of the dispenser cannot be accurately performed in the case of automatically replacing the syringe.

In order to solve such problems, the present applicant filed korean laid-open patent publication No. 10-2017-0134088 (2017.12.06 publication) "syringe unit exchanging apparatus and method and viscous liquid dispenser including the same". According to the above-mentioned patent publication, a configuration is disclosed in which the syringe stored in the syringe storage table is replaced by a syringe unit replacement device.

In view of the above, the present invention provides a technique for a syringe unit device capable of ejecting a viscous liquid and effectively coupling a syringe unit to a head unit, which is improved over the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a syringe unit device can move the viscous liquid of syringe to the cavity and from the cavity to the blowout target blowout viscous liquid to have the optimal mounting structure, with installing the syringe unit in head unit through syringe unit change device.

The utility model provides a syringe unit device, syringe unit device includes: a syringe unit comprising: a syringe storing a viscous liquid therein; and a discharge section to which the syringe is attached, which receives the viscous liquid from the syringe and discharges the viscous liquid; and a fixing device that fixes the ejection portion, the syringe unit being integrally attached to or detached from the fixing device.

In addition, a cavity for filling viscous liquid in the syringe may be provided in the ejection portion.

In addition, the ejection section includes a nozzle holder including: a first body provided with an insertion hole into which the syringe is inserted; and a second body extending downward from the first body, formed in a smaller area than the first body, and provided with a nozzle for ejecting a viscous liquid to an ejection target, wherein the cavity may be provided inside the first body.

In addition, the spouting portion may further include a cover provided with a liquid level detection window, and a cover seating portion is provided near the insertion hole of the first body, the cover being seated on the cover seating portion.

In addition, a liquid level detection sensor for detecting the liquid level of the viscous liquid may be provided at an upper portion of the liquid level detection window.

In addition, a first fitting part communicating with the cavity and supplying air pressure to the cavity may be provided at one side end of the cover.

In addition, a second fitting portion communicating with the syringe and a third fitting portion communicating with the cavity may be provided on the first body and the second body, and the second fitting portion and the third fitting portion may be connected by a fitting line.

In addition, a membrane valve may be provided in the nozzle holder to open and close a flow path connecting the chamber and the third mounting portion.

The opening and closing of the diaphragm valve can be controlled by the expansion and contraction operation of the pin actuator.

In addition, the syringe unit may be fixed to the fixing device, and the ejection portion 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 and second jig support portions may be gripped by the first and second jigs in a state of being inserted into insertion grooves provided in surfaces of the first and second jigs of the syringe unit replacement device which face each other.

The first and second holder support portions are provided on one side of the second body so as to be arranged in an up-down direction or a left-right direction of the second body, and an arrangement pitch of the first and second holder support portions corresponds to a degree to which the first and second holders can be gripped by an insertion groove provided between the first and second holders of the syringe unit exchanging device.

The first jig supporting part and the second jig supporting part may be a pair of bar-shaped members protruding from one side surface of the second body.

In addition, a protruding bar-shaped connection portion connected to the fixing device may be provided at the first body part on the opposite side of the first clip supporting portion, a fixing hole into which a position fixing pin of the fixing device is inserted may be provided above the connection portion, a pin hole may be provided between the fixing hole and the connection portion, and a connection pin provided to the fixing device may be inserted into the pin hole.

In addition, the fixing device may include: a chuck provided with an engagement portion engaged with the groove of the connection portion; and a plate connected to the chuck, provided with a position fixing pin and a coupling pin, and provided with a through hole through which the connection portion passes, the position fixing pin and the coupling pin being capable of protruding toward the nozzle holder on the plate.

In addition, a heater may be installed on the plate, the plate being in contact with the first body, and heat of the plate being transferred to the viscous liquid inside the cavity.

In addition, the plate may be provided with a nozzle heating block including a first heating plate and a second heating plate contacting a side of the second body, and heat of the plate is transferred to the second body through the nozzle heating block.

In addition, the nozzle heating block may include a head portion coupled to the plate, and the head portion may be mounted to the plate in a state of being elastically supported by the first elastic member.

In addition, the nozzle heating block may include a third heating plate connecting the first heating plate and the second heating plate, and the first heating plate, the second heating plate, and the third heating plate are combined to the plate in a state of being elastically supported by a second elastic member.

The diaphragm valve opens and closes a connection flow path connecting the chamber and the third mounting portion, and the connection flow path is blocked by pressurization of a valve operation pin that pressurizes the diaphragm valve by pressurization of a pin actuator.

Effect of the utility model

In the present invention, in order to automatically complete the replacement operation of the syringe unit that has been used, a syringe unit device having an optimal mounting structure for mounting the syringe unit in the head unit through the syringe unit replacement device is provided, so that the convenience of the viscous liquid dispensing process can be increased, and the operation time can be shortened.

By providing a syringe unit device having an optimized configuration, the convenience of the viscous liquid dispensing process can be increased, and the operation time can be shortened.

In addition, according to the present invention, there are effects of: in one aspect of providing a new syringe unit for supplying a viscous liquid, the syringe unit can be replaced by integrating the syringe unit, and the syringe unit can be accurately gripped and the head unit can be attached at the time of replacement.

Drawings

Fig. 1 is a diagram showing a viscous liquid dispenser including a syringe unit and a syringe unit replacement device according to an embodiment of the present invention.

Fig. 2 is a front perspective view illustrating a spouting portion according to a preferred embodiment of the present invention.

Fig. 3 is a back perspective view illustrating a spouting portion according to a preferred embodiment of the present invention.

Fig. 4 is a view illustrating a fixing device according to a preferred embodiment of the present invention.

Fig. 5 is a front perspective view showing a separated state of the spouting portion and the fixing device according to a preferred embodiment of the present invention.

Fig. 6 is a back perspective view showing a separated state of the spouting portion and the fixing device according to a preferred embodiment of the present invention.

Fig. 7 is a side view illustrating a separated state of the spouting portion and the fixing device according to a preferred embodiment of the present invention.

Fig. 8 is a perspective view illustrating a coupling state of the spouting portion and the fixing device according to a preferred embodiment of the present invention.

Fig. 9 is a drawing showing the ejection part according to a preferred embodiment of the present invention closely bonded to the nozzle heating block.

Fig. 10 is a view showing a state in which a syringe is coupled to a spouting portion according to a preferred embodiment of the present invention.

Fig. 11 is an enlarged view illustrating a spouting portion according to a preferred embodiment of the present invention.

Fig. 12 is a sectional view taken along line a-a of fig. 11, and is a view showing an open state of the thin film valve.

Fig. 13 is a view showing a state in which viscous liquid in a chamber is ejected to an ejection target through a nozzle when air pressure is supplied to a first mounting portion according to a preferred embodiment of the present invention.

Fig. 14 is a sectional view taken along line a-a of fig. 11, and is a view showing a closed state of the thin film valve. Fig. 15A and 15B are views illustrating a separation process of a syringe unit exchanging apparatus according to a preferred embodiment of the present invention.

Fig. 16 is a diagram illustrating a viscous liquid moving path according to a preferred embodiment of the present invention.

Fig. 17A and 17B are views showing a state in which a membrane valve structure in a syringe unit according to a preferred embodiment of the present invention is installed in a supply path of a viscous liquid.

Fig. 18 is a view showing a state in which the movement of the viscous liquid is blocked according to the membrane valve structure in the syringe unit according to a preferred embodiment of the present invention.

Fig. 19 is a view illustrating a state where a pin actuator of a membrane valve structure in a syringe unit according to a preferred embodiment of the present invention is retreated.

Fig. 20 is a view showing a process in which a viscous liquid is supplied to a chamber as a valve operating pin of a pressurized membrane valve is spaced apart from a membrane valve by the extent to which a pin actuator is retreated, a connecting flow path is opened, in a syringe unit according to a preferred embodiment of the present invention.

Fig. 21 is a view illustrating a state before a continuation of the syringe unit is coupled to the head unit according to a preferred embodiment of the present invention.

Fig. 22 is a view showing a state where a continuation of the syringe unit enters a plate of the head unit according to a preferred embodiment of the present invention.

Fig. 23 is a view illustrating a state where a continuation of the syringe unit is located at an engagement portion of a chuck of the head unit according to a preferred embodiment of the present invention.

Fig. 24 is a view showing a state where a continuation of the syringe unit is engaged with an engaging portion of a chuck of the head unit according to a preferred embodiment of the present invention.

Description of the reference numerals

10: viscous liquid dispenser 20: frame body

30: head support 40: head unit

50: the loading table 60: robot guide rail

100: syringe unit replacement device 101: first clamp

102: the second jig 103: insertion groove

200: syringe unit storage table 300: syringe unit

310: the injector 320: discharge part

321: nozzle holder 321 a: first body

321b, and 2: the second body 321 c: inserting hole

321d, 321: cover placing portion 321 e: fixing hole

321 f: pin hole 322: cover

324: first jig support section 326: second clamp supporting part

328: the joint 328 a: trough

331: first fitting portion 332: second assembling portion

333: third fitting portion 334: assembly line

340: the cavity 341: heating device

342: liquid level detection window 344: nozzle with a nozzle body

345: temperature sensor 351: valve operating pin

352: the pin actuator 354: film pin

357: flow path 400: discharge object

500: the fixing device 510: chuck with a locking mechanism

510 a: the engaging part 520: board

521: position fixing pin 522: joint pin

523: bonding area 524: through hole

600: nozzle heating block 611: head part

612: first heating plate 613: second heating plate

614: insertion space 615: first elastic component

616: second elastic member 617: third heating plate

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, it should be noted that, when reference numerals are attached to constituent elements in respective drawings, the same reference numerals are attached to the same constituent elements as much as possible even if they are displayed on different drawings. In the description of the present invention, when it is determined that a detailed description of a related known structure or function may obscure the gist of the present invention, a detailed description thereof will be omitted. 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 modified or variously implemented by those skilled in the art.

Fig. 1 shows a diagram of a viscous liquid dispenser comprising a syringe unit and a syringe unit exchanging device according to an embodiment of the present invention.

The viscous liquid dispenser 10 includes: a frame body 20; a loading table 50 which is provided on the frame 20 and loads an object such as a substrate to which a viscous liquid is to be dispensed; a head support frame (including a head support table) 30 provided across the upper portion of the loading table 50; a head unit 40 movably provided along the head support frame 30 in the X-axis direction; a syringe unit 300 attached to the head unit 40 and storing and ejecting (including discharging) a viscous liquid; the syringe unit replacement device 100 performs replacement of the syringe unit 300. In one embodiment, head support 30 may be driven in the Y-axis direction. Further, a robot guide 60 is provided on one side of the frame body 20, and the syringe unit exchanging device 100 may be provided movably along the robot guide 60. The syringe unit storage table 200 for storing the syringe units 300 before and after replacement may be provided at a position accessible to the syringe unit replacement device 100.

In the present invention, the replacement of the syringe unit 300 may be performed in a state where the amount of the viscous liquid stored in the syringe unit 300 mounted to the specific head unit 40 is reduced below the preset value. Further, the head unit 40 requiring replacement of the syringe unit 300 may be moved to the side of the head stock 30, and replacement of the syringe unit 300 may be performed by the syringe unit replacement device 100, and the other head units 40 may continue to discharge the viscous liquid onto the substrate mounted on the mounting table 50. In fig. 1, it is exemplarily shown that replacement of the syringe unit 300 is performed for two head units 40 located on the left side of the head support frame 30, and viscous liquid is ejected using the remaining head units 40.

Fig. 2 is a front perspective view illustrating a spouting portion according to an embodiment of the present invention, and fig. 3 is a back perspective view illustrating a spouting portion according to an embodiment of the present invention.

The utility model discloses an injector unit device includes: a syringe unit 300 including a syringe 310 and a discharge portion 320; and a fixing device 500 connected to the head unit 40 and fixing the ejection unit 320.

The syringe 310 of fig. 10 is attached to the ejection section 320. The ejection unit 320 is a device that ejects the viscous liquid received from the syringe 310 toward the ejection target 400. The ejection part 320 includes a nozzle holder 321 and a cap 322. The nozzle holder 321 includes a first body 321a and a second body 321 b.

An insertion hole 321c correspondingly coupled to the lower portion of the syringe 310 and a cap seating portion 321d where the coupling cap 322 is seated are provided at the upper portion of the first body 321 a. The cover seating portion 321d may be adjacently located to the insertion hole 321c and configured to be flat. 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 volume smaller than that of the syringe 310. In one embodiment, the volume of the chamber 340 may be 1/5-1/20 of the volume of the syringe 310. When the viscous liquid filling amount inside the chamber 340 drops to a set level, the viscous liquid stored in the syringe 310 is supplied to the chamber 340.

Since the chamber 340 has a smaller volume than the syringe 310, the ejection of the viscous liquid can be finely and precisely controlled. That is, as will be described later, 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, and the volume of the chamber 340 is small, so that there is an advantage that the pressure of the air can be controlled more finely. Conventionally, the discharge amount is controlled depending on the air pressure supplied to the syringe 310, but the volume of the syringe 310 is large, and it is difficult to precisely control the air pressure.

However, the present invention employs the chamber 340, so that the ejection of the viscous liquid can be precisely controlled. More specifically, if the syringe capacity is increased by applying air pressure to the syringe to eject the viscous liquid, the space in the syringe in which air is present becomes larger as the viscous liquid is ejected from the syringe, and when the air pressure is changed to adjust the pressure applied to the viscous liquid in the syringe, the pressure is transmitted to the surface of the viscous liquid through the air in the space, and therefore, adjustment of the pressure applied to the viscous liquid may be delayed in time. For this reason, in order to discharge a fine viscous liquid pattern to a flat panel display with high accuracy, it is necessary to frequently adjust the pressure reduction of the viscous liquid in the syringe, and it is difficult to control the syringe structure in the related art.

However, in the present invention, the viscous liquid stored in the syringe 310 is moved to the chamber 340 having a smaller volume than the syringe 310, and the viscous liquid is ejected from the chamber 340 toward the ejection target 400, and the positive pressure or the negative pressure is supplied to the chamber 340, whereby the problems of the conventional syringe device can be solved.

In one embodiment, 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 smaller cross-sectional area 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 a lower end of the chamber 340 to receive the viscous liquid from the chamber 340 or to receive the viscous liquid from the chamber 340 through a separate flow path.

A first jig supporting part 324 and a second jig supporting part 326 are provided on the front surface of the second body 321 b. The first and second

jig supporting parts

324 and 326 may be configured in pairs. The first and second jig supports 324 and 326 may be formed to protrude toward the syringe unit exchanging device 100 on one surface of the second body 321 b. In fig. 2 and 3, the first jig supporting part 324 and the second jig supporting part 326 are shown to be arranged vertically, but in the embodiment of the present invention, the first jig supporting part 324 and the second jig supporting part 326 may be arranged horizontally. When the first and second jig supports 324 and 326 are disposed left and right, the left and right width of the second body 321b may be formed to be larger than the width shown in fig. 2 and 3.

The cover 322 may be provided with a liquid level detection window 342 for detecting the level of the viscous liquid filled in the cavity 340. The liquid level detection window 342 may be provided by a transparent window, and a liquid level detection sensor (not shown) using light may be provided at an upper portion of the liquid level detection window 342.

The liquid level detection sensor may be a laser distance sensor that irradiates and receives light through the liquid level detection window 342 so as to be able to sense the level of the viscous liquid of the chamber 340.

A first fitting portion 331 communicating with the cavity 340 may be provided at one side end of the cover 322. The air pressure may be supplied to the inside of the cavity 340 through the first fitting portion 331. The viscous liquid in the syringe 310 is transferred to the inside of the chamber 340, and the viscous liquid stored in the chamber 340 is discharged or stopped from being discharged by the nozzle 344 by supplying the air pressure to the inside of the chamber through the first mounting portion 331. That is, when a positive pressure is supplied to the inside of the chamber 340, the viscous liquid of the chamber 340 is ejected through the nozzle 344, and when a negative pressure is supplied to the inside of the chamber 340, the supply of the viscous liquid to the nozzle 344 is interrupted.

The first body 321a may be provided at one surface thereof with a second fitting portion 332. The second fitting portion 332 may communicate with the syringe 310 coupled to the insertion hole 321c of the first body 321 a.

A third fitting part 333 may be provided on one surface of the second body 321 b. The second fitting part 332 and the third fitting part 333 may be connected by a fitting line 334. The assembly line 334 provides a flow path for the viscous liquid to flow. The third fitting part 333 may communicate with a cavity 340 provided inside the first body 321 a. The third fitting part 333 may be located between the second fitting part 332 and the first jig supporting part 324.

The viscous liquid inside the syringe 310 moves to the chamber 340 through the second fitting part 332, the fitting line 334, and the third fitting part 333.

The first body 321a is provided with a connection portion 328 on a rear surface thereof. The connection 328 may be formed in a bar shape, and may be formed to protrude toward the fixture 500 shown in fig. 5.

A groove 328a may be formed on an outer circumferential surface of the junction 328. When the connection portion 328 is coupled to the fixture 500, the engagement portion 510a such as a plurality of jaws (jaw) provided on the chuck 510 of the fixture 500 is inserted into the groove 328a, thereby making it possible to construct a firm coupling state. The engagement of the engagement portion 510a with respect to the groove 328a may be accomplished by a well-known technique such as a chuck (chuck).

A fixing hole 321e and a pin hole 321f are provided on the rear surface of the first body 321a provided with the connection portion 328. In one embodiment, the fixing hole 321e and the pin hole 321f are located above the junction 328, and the pin hole 321f may be located below the fixing hole 321 e. The pin hole 321f may be formed in plural.

The position fixing pin 521 of the fixing device 500 is inserted into the fixing hole 321e, and the coupling pin 522 of the fixing device 500 is inserted into the pin hole 321 f.

Fig. 4 is a diagram illustrating a fixture according to an embodiment of the present invention.

The fixture 500 is connected with the head unit 40. The syringe unit 300 can be attached to and detached from the fixing device 500 by the syringe unit exchanging device 100.

The fixture 500 includes a chuck 510 and a plate 520. The chuck 510 is located at the head unit 40 side, and may be provided with a plurality of engaging portions 510a engaging the joint 328. The plate 520 is located at the nozzle holder 321 side and connected to the cartridge 510. The chuck 510 may be a rotating chuck.

The inside of the plate 520 may be provided with a heater 341 transferring heat. The heat of the heater 341 is transferred to the viscous liquid inside the chamber 340 and the viscous liquid passing through the flow path 357 connecting the chamber 340 and the nozzle 344. The viscosity of the hot viscous liquid applied to the heater 341 is reduced, and thus the viscous liquid can be smoothly discharged. The heat of the heater 341 may be transferred to the viscous liquid inside the chamber 340 through the plate 520. A temperature sensor 345 may be provided at a lower portion of the plate 520.

The plate 520 is provided with a position fixing pin 521 and a coupling pin 522. The position fixing pins 521 and the coupling pins 522 may protrude on the plate 520 toward the nozzle holder 321. The coupling pin 522 may be located below the position fixing pin 521.

The position fixing pins 521 serve as alignment positions when the ejection part 320 is fixed to the fixing device 500, and may be formed to have a length smaller than that of the coupling pins 522. The number of the position fixing pins 521 coupled to the fixing holes 321e and the number of the coupling pins 522 coupled to the pin holes 321f are not limited. In one embodiment, one position fixing pin 521 and two coupling pins 522 may be formed.

A nozzle heating block 600 is included in front of the plate 520. The nozzle heating block 600 may include a first heating plate 612 and a second heating plate 613 separated by an insertion space 614. The first heating plate 612 and the second heating plate 613 may be connected by a third heating plate 617. When the ejection unit 320 is fixed to the fixing device 500, the first heater plate 612 and the second heater plate 613 contact both side surfaces of the second body 321b, and the third heater plate 617 contacts the front surface of the second body 321 b.

In the aspect where the plate 520 is heated by the heater 341, the heat of the plate 520 is transferred to the nozzle heating block 600 fixed to the plate 520.

When the ejection part 320 is fixed to the fixing device 500, the plate 520 contacts the first body 321a of the nozzle holder 321, and the heat of the plate 520 is transferred to the viscous liquid stored in the chamber 340. In addition, the first and

second heating plates

612 and 613 contact both side surfaces of the second body 321b and transfer heat to the second body 321b, thereby heating the viscous liquid supplied from the chamber 340 to the nozzle 344. With this structure, the viscous liquid stored in the chamber 340 and the viscous liquid supplied to the nozzle 344 can be continuously heated, and thus the viscosity can be maintained (the viscosity is kept uniform or in a certain range).

When the ejection part 320 is fixed to the fixing device 500, the first, second, and

third heating plates

612, 613, and 617 of the nozzle heating block 600 closely surround three surfaces, such as both side surfaces and the back surface, of the second body 321 b. With this structure, the heat of the heater 341 is transferred to the second body 321b through the first, second, and

third heating plates

612, 613, and 617, and the viscous liquid passing through the flow path 357 connecting the chamber 340 and the nozzle 344 is continuously heated.

When the ejection unit 320 is fixed to the fixing device 500, the nozzle heating block 600 is supported and retracted by the first elastic member 615 and the second elastic member 616, such as springs. In one embodiment, the first, second, and

third heating plates

612, 613, and 617 may have elasticity themselves, in which case the first, second, and

third heating plates

612, 613, and 617 are closely attached to the second body 321b and can transfer heat of the heater 341.

Fig. 5 is a front perspective view showing a separated state of a spouting portion and a fixing device according to an embodiment of the present invention, fig. 6 is a back perspective view showing a separated state of a spouting portion and a fixing device according to an embodiment of the present invention, and fig. 7 is a side view showing a separated state of a spouting portion and a fixing device according to an embodiment of the present invention.

Plate 520 has through holes 524. The through hole 524 is located between the coupling pin 522 and the head 611 of the fixture 500. The connecting portion 328 can be coupled to the engaging portion 510a of the chuck 510 through the through hole 524.

A bonding region 523 is provided at a lower portion of the plate 520, and a nozzle heating block 600 is provided at the bonding region 523. The coupling area 523 is located below the coupling pin 522.

The nozzle heating block 600 includes a head 611, and a first heating plate 612, a second heating plate 613, and a third heating plate 617 extending downward from the head 611.

The head 611 may be coupled to an upper portion of the coupling region 523 by a coupling member such as a bolt or a shaft pin. The head 611 is elastically supported by the first elastic member 615. The first elastic member 615 is located between the head 611 and the bonded region 523.

An insertion space 614 is provided between the first heating plate 612 and the second heating plate 613. The first heating plate 612 and the second heating plate 613 are connected by the third heating plate 617, and are elastically supported by the second elastic member 616. The second elastic part 616 is located between the third heating plate 617 and the combining region 523.

Fig. 8 is a perspective view showing a coupling state of the spouting portion and the fixing means according to an embodiment of the present invention, and fig. 9 is a view showing that the spouting portion is closely coupled to the nozzle heating block according to an embodiment of the present invention.

When the nozzle holder 321 is combined with the fixture 500, the second body 321b is correspondingly inserted into the insertion space 614. At this time, the second body 321b can be closely attached to the nozzle heating block 600 by the elastic supporting force of the first and second

elastic members

615 and 616.

When the nozzle holder 321 is combined with the fixture 500, the first body 321a may be positioned above the head 611.

Fig. 10 is a drawing showing a state in which a syringe is coupled to a spouting portion according to an embodiment of the present invention, fig. 11 is an enlarged view showing the spouting portion according to an embodiment of the present invention, and fig. 12 is a cross-sectional view taken along line a-a of fig. 11, showing an opened state of a membrane valve.

A valve is provided to open and close the connection flow path between the chamber 340 of the first body 321a and the third fitting part 333. In one embodiment, the valve may be a membrane valve 354. The diaphragm valve 354 opens and closes a connection flow path between the chamber 340 and the third mounting portion 333. The diaphragm valve 354 is opened and closed by the operation of the pin actuator 352.

The valve operating pin 351 is interlocked and operated with the pin actuator 352. When the thin film valve 354 is opened, the length of the pin actuator 352 that presses the valve operation pin 351 is reduced, and the thin film valve 354 is opened when the pressing state of the thin film valve 354 by the valve operation pin 351 is released.

When the diaphragm valve 354 is closed, the length of the pin actuator 352 is extended, and the valve operating pin 351 pressurizes the diaphragm valve 354, so that the diaphragm valve 354 is closed.

When air pressure is supplied to the syringe 310 in the open state of the membrane valve 354, the viscous liquid in the syringe 310 is filled into the cavity 340 through the second fitting portion 332, the fitting line 334, and the third fitting portion 333 by the air pressure.

Fig. 13 is a view showing a state where viscous liquid in a chamber is ejected to an ejection target through a nozzle when air pressure is supplied to a first mounting portion according to an embodiment of the present invention, and fig. 14 is a cross-sectional view taken along line a-a of fig. 11, showing a closed state of a thin film valve.

In the open state of the membrane valve 354, the chamber 340 and the third fitting part 333 are blocked, and thus the viscous liquid of the syringe 310 cannot move to the chamber 340. In this state, when air pressure is applied to the first mounting portion 331, the first mounting portion 331 and the cavity 340 are connected, and thus the viscous liquid filled in the cavity 340 is discharged toward the discharge object 400 located below the nozzle 344 through the nozzle 344.

In one embodiment, the membrane valve 354 may be a SHEET (SHEET) made of a rubber material such as Ethylene Propylene Diene Monomer (EPDM).

Since the chamber 340 and the nozzle 344 are connected by the flow path 357, the viscous liquid filled in the chamber 340 is ejected through the nozzle 344 via the chamber 340 and the flow path 357.

On the other hand, when the syringe unit 300 is replaced, the first and second

jig support sections

324 and 326 are gripped by the first and

second jigs

101 and 102 in a state of being inserted into the insertion grooves 103 provided on the surfaces of the first and

second jigs

101 and 102 of the syringe unit replacement device 100 which face each other.

In this state, when the syringe unit exchanging device 100 pulls the first and second

jig supporting parts

324 and 326 rearward, the syringe unit 300 is separated from the chuck 510.

Hereinafter, a process of coupling the syringe unit to the fixing device will be described.

As shown in fig. 5 to 8, the syringe unit 300 is moved toward the fixing device 500 and coupled to the fixing device 500. When the syringe unit 300 is coupled to the fixing device 500, the position fixing pins 521 of the fixing device 500 are correspondingly coupled to the fixing holes 321e, the coupling pins 522 are correspondingly coupled to the pin holes 321f, and the connection portions 328 are correspondingly coupled to the through holes 524 of the plate 520. Meanwhile, the second body 321b is coupled to the insertion space 614 between the first and

second heating plates

612 and 613 of the nozzle heating block 600, and the first body 321b is positioned on the head 611.

During the process that the second body 321b is closely coupled to the insertion space 614, the head 611 of the nozzle heating block 600 is pushed backward, and the first and second

elastic members

615 and 616 elastically supporting the nozzle heating block 600 are compressed. The second body 321b can be closely attached to the head 611 by the elasticity of the first elastic member 615 and the second elastic member 616.

The groove 328a of the connecting portion 328 is firmly engaged with the engaging portion 510a of the chuck 510 through the through hole 524.

Hereinafter, a process of filling the viscous liquid into the cavity will be described.

As shown in fig. 10 to 12, the viscous liquid in the large-capacity syringe 310 is moved to the inside of the chamber 340, so that the small amount of ejection can be controlled. The viscous liquid stored in the syringe 310 may be paste (sealant) for bonding a flat display panel formed by bonding two substrates, or epoxy for die bonding, or the like.

To fill the cavity 340 with a viscous liquid, air pressure is supplied to the interior of the syringe 310. In response to the supply of the air pressure to the inside of the syringe 310, the viscous liquid in the syringe 310 can be filled into the chamber 340 through the flow paths such as the second fitting portion 332, the fitting line 334, and the third fitting portion 333 that connect the syringe 310 and the chamber 340.

During filling of the cavity 340 with the viscous liquid, the diaphragm valve 354 is opened. The opening and closing of the diaphragm valve 354 is performed by the expansion and contraction operation of the pin actuator 352. When the pin actuator 352 contracts, the diaphragm valve 354 is opened by releasing the pressurized state of the diaphragm valve 354. In this state, when air pressure is applied to the syringe 310, the viscous liquid inside the syringe 310 is filled into the cavity 340 connected to the third fitting part 333 through the second fitting part 332, the fitting piping 334, and the third fitting part 333.

Hereinafter, the ejection process of the viscous liquid will be described.

In a state where the cavity 340 is filled with the viscous liquid, air pressure is supplied to the first fitting portion 331. When air pressure is supplied to the inside of the first mounting portion 331 communicating with the chamber 340, the viscous liquid filled in the chamber 340 is discharged from the chamber 340 to the discharge object 400 through the nozzle 344 via the flow path 357 connecting the chamber 340 and the nozzle 344.

On the other hand, when the liquid level inside the chamber 340 is decreased to a predetermined value or less based on the value sensed by the liquid level detection sensor provided at the upper portion of the liquid level detection window 342, the control unit, not shown, interrupts the discharge of the viscous liquid, and the pin actuator 352 is contracted to open the membrane valve 353 and supply the syringe 310 with positive pressure, so that the chamber 340 is filled with the viscous liquid of the syringe 310. When the liquid level inside the chamber 340 becomes equal to or higher than a predetermined set value based on the value detected by the liquid level detection sensor provided above the liquid level detection window 342, the pin actuator 352 is extended to close the film valve 353, thereby interrupting the filling of the viscous liquid into the chamber 340.

As shown in fig. 15A and 15B, in the viscous liquid dispenser 10, replacement of the syringe unit 300 coupled to the head unit 40 can be performed by the syringe unit replacement device 100.

As shown in fig. 15A, the first and second gripper supports 324 and 326 of the syringe unit 300 are simultaneously gripped by the first and

second grippers

101 and 102 of the syringe unit exchanging apparatus 100.

As shown in fig. 15B, the first and

second clamps

101 and 102 are pulled to separate the syringe unit 300 in the joining area of the head unit 40. The connection portion 328 coupled to the engagement portion 510a of the cartridge 510 is separated from the engagement 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 held by the first and

second grippers

101 and 102 is separated by moving the first and

second grippers

101 and 102 horizontally by the backward movement.

Since one ends of the first and second

jig supporting portions

324 and 326 are inserted into the insertion grooves 103 of the first and

second jigs

101 and 102 to form a firm grip state, the syringe unit 300 can be safely separated.

The syringe unit exchanging apparatus 100 places the separated old syringe unit 300 at a designated place and moves to the syringe unit maintenance station 200 along the robot guide 60. In some cases, the old syringe unit 300 separated to the syringe unit storage table 200 may be stored. The syringe unit replacement device 100 moved to the syringe unit storage table 200 holds a new syringe unit 300 set on the syringe unit storage table 200.

Specifically, the syringe unit exchanging apparatus 100 grips the first and second

jig supporting portions

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

second jigs

101 and 102.

The syringe unit exchanging apparatus 100 moves to the head unit 40 along the robot rail 60. The syringe unit exchanging apparatus 100 couples a new syringe unit 300 to the coupling region of the head unit 40 left vacant by the removal of the old syringe unit 300.

When the 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 engagement portion 510a of the chuck 510 of the head unit 40, thereby completing the firm coupling of the syringe unit 300.

Hereinafter, a process of supplying the viscous liquid of the syringe to the chamber will be specifically described. An embodiment in which a thin film valve structure is applied in order to control the flow of the viscous liquid in the viscous liquid moving path f as shown by the arrow in fig. 16 is described in the following description. However, in the practice of the present invention, the valve structure for controlling the flow of the viscous liquid in the viscous liquid moving path f may be constructed by a structure other than the membrane valve structure.

Fig. 17A and 17B are views showing a state in which a thin film valve structure in a syringe unit according to a preferred embodiment of the present invention is mounted on a supply path of a viscous liquid.

Fig. 17A shows a state in which the pin actuator 352 pressurizes the valve operating pin 351. Fig. 17B shows a state where the film valve 354 is mounted inside the second body 321B together with the valve operating pin 351.

Fig. 18 is a view illustrating a state in which the movement of the viscous liquid is blocked according to the membrane valve structure in the syringe unit according to a preferred embodiment of the present invention.

As shown in fig. 18, the valve actuator 352 pressurizes the valve operating pin 351, and the valve operating pin 351 pressurizes the diaphragm valve 354 to block the connection flow path 355 connected to the chamber 340. So that the viscous liquid of the syringe cannot be supplied to the chamber 340.

As shown in fig. 19, in order to open the connection flow path 355, the pin actuator 352 that is pressing the valve operation pin 351 is retracted, and the pressed state of the valve operation pin 351 is released. In a state where the valve operation pin 351 is released from pressurization, the pin actuator 352 is spaced apart from the valve operation pin 351 by a certain distance.

Fig. 20 is a view illustrating a process in which a valve operating pin of a pressurized membrane valve is spaced apart from a membrane valve by the extent to which a pin actuator is retreated, a connecting passage is opened, and viscous liquid is supplied to a chamber in a syringe unit according to a preferred embodiment of the present invention.

As shown in fig. 20, in order to fill the cavity 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 fitting portion 332, the fitting line 334, the third fitting portion 333, etc. connecting the syringe 310 and the chamber 340.

As the pin actuator 352 is retracted, the pressurized state of the diaphragm valve 354 of the valve operating pin 351 is released. In this state, as shown by an arrow in fig. 11, the diaphragm valve 354 blocking the connection flow path 355 is pushed by the viscous liquid supplied from the third fitting part 333, and the blocked state of the connection flow path 355 is naturally released. Thereby, the viscous liquid is supplied to the chamber 340 connected to the connection flow path 355 along the connection flow path 355.

On the other hand, gas is pressurized into the syringe 310 in order to supply the viscous liquid of the syringe 310 to the chamber 340. The gas is pressurized in the syringe 310, and the viscous liquid of the syringe 310 is supplied to the chamber 340 through the second fitting portion 332, the fitting line 334, and the third fitting portion 333 along the connection flow path 355 connecting the third fitting portion 333 and the chamber 340.

Hereinafter, a process of coupling the joint to the chuck will be specifically described.

Fig. 21 is a drawing showing a state before a continuation of the syringe unit is coupled to the head unit according to a preferred embodiment of the present invention.

As shown in fig. 21, the splice 328 is positioned on the plate 520 prior to engaging the chuck 510. The connection 328 is now exactly aligned with the through hole 524 of the plate 520.

Fig. 22 is a drawing showing a state where a continuation of the syringe unit enters a plate of the head unit according to a preferred embodiment of the present invention.

As shown in fig. 22, the connection portion 328 is inserted into the through hole 524 of the plate 520 while being precisely aligned with the through hole 524. The inner diameter of the through hole 524 is preferably slightly larger than the outer diameter of the connection portion 328 for smooth insertion of the connection portion 328.

Fig. 23 is a drawing showing a state where a continuation of the syringe unit is located at an engagement portion of a chuck of the head unit according to a preferred embodiment of the present invention.

As shown in fig. 23, the continuous portion 328 is inserted into the through hole 524 of the plate 520 and then continuously moved in the direction of the chuck 510 until the engaging portion 510a of the chuck 510 is positioned in the groove 328a of the continuous portion 328.

As shown in fig. 24, in a state where the engaging portion 510a of the chuck 510 is positioned in the groove 328a of the connecting portion 328, the connecting portion 328 is engaged with the chuck 510 in a state where the tip of the engaging portion 510a is correctly inserted into the groove 328a by the engaging operation of the engaging portion 510 a.

According to the present invention, when the syringe unit is replaced with the syringe unit replacement device such as the robot arm, the fixing or releasing operation can be rapidly and accurately completed. This makes it possible to reduce the time and labor required for replacing the syringe unit, eliminate the need for fastening bolts or the like used for coupling to the conventional syringe unit, minimize the generation of dust, and minimize the inflow of impurities in the liquid crystal coating step of discharging the viscous liquid onto the substrate.

The above description is only an exemplary description of the technical idea of the present invention, and a person having ordinary knowledge in the technical field to which the present invention belongs can make various modifications, changes, and substitutions within a range not exceeding the essential characteristics of the present invention. Therefore, the embodiments and drawings disclosed in the present invention are not intended to limit the technical spirit of the present invention but to illustrate, and the scope of the technical spirit of the present invention is not limited to the embodiments and drawings. The scope of protection of the invention is to be interpreted by the claims, and all technical ideas that are within the scope of the equivalent thereof are to be interpreted within the scope of the claims.

Claims

1. A syringe unit device, wherein the syringe unit device comprises:

a syringe unit comprising: a syringe storing a viscous liquid therein; and a discharge section to which the syringe is attached, which receives the viscous liquid from the syringe, and which discharges the viscous liquid; and

a fixing device for fixing the ejection part,

the syringe unit is integrally attached to or detached from the fixing device.

2. The injector unit apparatus according to claim 1,

the jetting part is internally provided with a cavity filled with viscous liquid in the injector.

3. The injector unit apparatus according to claim 2,

the ejection portion includes a nozzle holder including: a first body provided with an insertion hole to which the syringe is coupled; and a second body extending downward from the first body, formed with a smaller cross-sectional area than the first body, and provided with a nozzle for ejecting a viscous liquid to an ejection target,

the cavity is arranged inside the first body.

4. The injector unit apparatus according to claim 3,

the spraying part also comprises a cover, a liquid level detection window is arranged on the cover,

a cover seating part is provided near the insertion hole of the first body, and the cover is seated on the cover seating part.

5. The injector unit apparatus according to claim 4,

and a liquid level detection sensor for detecting the liquid level of the viscous liquid in the cavity is arranged at the upper part of the liquid level detection window.

6. The injector unit apparatus according to claim 4,

a first fitting part is provided at one side end of the cover, the first fitting part communicating with the cavity and supplying air pressure to the cavity.

7. The injector unit apparatus according to claim 6,

the first body and the second body are provided with a second assembling portion communicated with the injector and a third assembling portion communicated with the cavity, and the second assembling portion and the third assembling portion are connected through an assembling pipeline.

8. The injector unit apparatus according to claim 7,

and a membrane valve is arranged in the nozzle seat and opens and closes a flow path connecting the cavity and the third assembling part.

9. The injector unit apparatus according to claim 8,

the opening and closing of the diaphragm valve is controlled by the expansion and contraction operation of a pin actuator.

10. The injector unit apparatus according to claim 3,

the injector unit is fixed to the fixing means,

the ejection portion is provided with a first jig support portion and a second jig support portion.

11. The injector unit apparatus according to claim 10,

the first and second jig supporting parts are provided at one side of the second body to be arranged along an up-down direction or a left-right direction of the second body,

the arrangement pitch of the first and second jig support portions corresponds to a degree to which the first and second jigs can be inserted into an insertion groove provided between the first and second jigs of the syringe unit replacement device and held by the first and second jigs.

12. The injector unit arrangement of claim 11,

the first and second jig supporting parts are a pair of bar-shaped members protruding from one side surface of the second body.

13. The injector unit apparatus according to claim 10,

the first body part of the opposite side of the first clamp supporting part is provided with a connection part combined with the protruding rod shape of the fixing device, a fixing hole inserted with the position fixing pin of the fixing device is arranged above the connection part, a pin hole is arranged between the fixing hole and the connection part, and the connection pin of the fixing device is inserted into the pin hole.

14. The injector unit arrangement of claim 13,

the fixing device includes:

a chuck provided with an engagement portion engaged with the groove of the connection portion; and

and a plate connected to the chuck, provided with a position fixing pin and a coupling pin, and provided with a through hole through which the connection portion passes.

15. The injector unit arrangement of claim 14,

the position fixing pin and the coupling pin protrude on the plate toward the nozzle holder.

16. The injector unit arrangement of claim 14,

a heater is mounted on the plate, the plate is in contact with the first body, and heat of the plate is transferred to the viscous liquid inside the cavity.

17. The injector unit arrangement of claim 16,

the plate is provided with a nozzle heating block which comprises a first heating plate and a second heating plate which are contacted with the side surface of the second body,

heat of the plate is transferred to the second body through the nozzle heating block.

18. The injector unit apparatus according to claim 17,

the nozzle heating block includes a head portion coupled to the plate, and the head portion is mounted to the plate in a state of being elastically supported by a first elastic member.

19. The injector unit apparatus according to claim 18,

the nozzle heating block includes a third heating plate connecting the first heating plate with the second heating plate, the first heating plate the second heating plate the third heating plate combines in with the state by second elastomeric element elastic support the board.

20. The injector unit apparatus according to claim 8,

the diaphragm valve opens and closes a connection flow path connecting the chamber and the third mounting portion, and the connection flow path is blocked by pressurization of a valve operation pin that pressurizes the diaphragm valve by a pressurization operation of a pin actuator.