HK40003465A - Liquid material-discharging device - Google Patents

Description

Liquid material discharge device

Technical Field

The present invention relates to a liquid material discharge device capable of reducing the amount of liquid material discarded during cleaning and having excellent cleaning performance.

Background

As a discharge device for applying a liquid material to a substrate in a desired pattern such as an adhesive, there is known a discharge device for discharging a small amount of the liquid material from a discharge port by using a reciprocating rod-shaped body (plunger), or a discharge device for discharging a liquid by rotating a screw having fins spirally formed in an axial direction of a surface of a rod-shaped body and feeding the liquid material by the fins by the rotation of the screw.

For example, in patent document 1, the applicant discloses a discharge device including: a liquid chamber having a discharge port for discharging a liquid material; a pushing-out member having a plunger whose width is narrower than that of the liquid chamber and a contact portion, and a tip end portion of the plunger moves forward and backward in the liquid chamber; a collision member provided adjacent to the pushing-out member on a side of the pushing-out member opposite to the plunger, and having a collision portion opposing the piston and the abutting portion; and a driving device for advancing and retreating the extruding member and the collision member, wherein the collision part collides with the abutting part, so that the extruding member advances at a high speed, and the liquid material is discharged.

For example, in patent document 2, the applicant discloses a liquid material discharge device including: a screw having a helical fin provided on a cylinder surface from a tip toward a longitudinal direction; a motor for rotating the screw; a body having a liquid material inlet for supplying a liquid material, a screw through-hole through which the screw passes, and a casing covering a discharge-port-side front end of the screw; and a nozzle installed at a front end of the casing and communicating with an inside of the casing, the screw type discharging device discharging the liquid material by rotation of the screw, wherein a gap is formed between the screw and an inner wall surface of the casing.

Documents of the prior art

Patent document

Patent document 1: international publication No. 2008/126373 pamphlet

Patent document 2: japanese patent application laid-open No. 2002-326715

Disclosure of Invention

Technical problem to be solved by the invention

When the type of the liquid material used in the liquid material discharge device is changed, the flow path in the device is cleaned. In this cleaning, the liquid material remaining in the flow path needs to be discarded, but it is desirable to reduce the disposal of expensive liquid material as much as possible.

In a liquid material discharge device having a liquid feeding passage for supplying a liquid material to a liquid chamber in which a supply/discharge member operates, a method of reducing the amount of the liquid material to be discarded at the time of cleaning by narrowing the liquid feeding passage has been attempted (for example, see fig. 1 of patent document 1).

However, if the liquid feeding path is made thin, it is difficult to remove the liquid material remaining in the liquid feeding path. Although the member having the liquid feeding passage may be cleaned by the ultrasonic cleaning machine, there is a problem that it takes a long time to clean the member having the elongated liquid feeding passage.

Accordingly, an object of the present invention is to provide a liquid material discharge apparatus capable of reducing the amount of liquid material to be discarded at the time of cleaning and having excellent cleaning performance.

Means for solving the problems

In a liquid material discharge device in which a storage container such as a syringe is disposed on a side of a main body, a liquid feeding passage having a certain length needs to be provided. Here, if the liquid feeding passage is formed to be wide in order to improve the cleaning performance and the like, a problem of remaining liquid material occurs. The inventors have made extensive studies and, as a result, have found that the above-mentioned problems can be solved by providing an elongated insertion member which is removably inserted into the liquid feeding path. That is, the present invention is configured by the following technical means.

The liquid material discharge apparatus of the present invention includes: a discharge member formed of a rod-shaped body; a liquid chamber which is wider than the discharge member and in which a distal end of the discharge member can be disposed; an outlet port communicating with the liquid chamber; a liquid feeding passage for communicating the liquid chamber with the liquid material storage container; and a driving device for driving the discharging member, wherein the liquid material discharging device is characterized in that: the liquid container includes an elongated insertion member that is removably inserted into the liquid feeding path so as not to interrupt communication between the liquid chamber and the liquid material storage container.

In the liquid material discharge apparatus, the liquid material discharge apparatus may further include: the liquid feeding path is constituted by a linear flow path having an end opening, and the insertion member includes an insertion portion into which the liquid feeding path is inserted and a filling portion that closes the end opening.

In the liquid material discharge apparatus, the liquid material discharge apparatus may further include: the insertion member has a length 1/2-1 times the length L of the liquid feeding path.

The liquid material discharge device may further include: a main body including at least a part of the driving device and having a through hole through which the discharge member is inserted; and a liquid transport member detachably connected to the main body, the liquid transport member having an extension portion forming the liquid transport passage.

In the liquid material discharge device including the liquid transport member, the liquid material discharge device may further include: the liquid transport member includes a space constituting a part of the liquid chamber and a seal member through which the discharge member can be inserted.

In the liquid material discharge device including the liquid transport member, the liquid material discharge device may further include: the liquid transport member includes an upper opening communicating with the storage container.

In the liquid material discharge device including the liquid transport member, the liquid material discharge device may further include: the liquid transport means includes a container coupler for positioning and coupling the storage container.

In the liquid material discharge device including the liquid transport member, the liquid material discharge device may further include: the extension portion of the liquid transport member is configured to be separable.

In the liquid material discharge apparatus, the liquid material discharge apparatus may further include: the insertion member has a concave-convex portion formed on a surface in a longitudinal direction.

In the liquid material discharge apparatus including the insertion member having the uneven portion, the liquid material discharge apparatus may be characterized in that: the uneven portion may be constituted by a plurality of raised portions which are brought into contact with an inner peripheral surface of the liquid feeding passage, and a groove which is located between the raised portions, and the uneven portion may be characterized in that: the grooves between the ridges are formed by spiral grooves.

In the liquid material discharge apparatus, the liquid material discharge apparatus may further include: the insertion member includes a plurality of stirring blades arranged in a longitudinal direction.

In the liquid material discharge apparatus, the liquid material discharge apparatus may further include: at least the surface of the insertion member is formed of a material softer than the inner peripheral surface of the liquid feeding passage, and the insertion member may be characterized in that: at least the surface of the insertion member is formed of rubber or resin.

In the liquid material discharge apparatus, the liquid material discharge apparatus may further include: the insertion member includes a plurality of insertion members having different cross-sectional areas, and a selected one of the insertion members is removably inserted into the liquid feeding path.

In the liquid material discharge apparatus, the liquid material discharge apparatus may further include: the discharge member is composed of a plunger having a tip end portion movable back and forth in the liquid chamber, or a screw having a tip end portion rotatable in the liquid chamber.

In the liquid material discharge apparatus, the liquid material discharge apparatus may further include: the discharge member is a plunger extending in a vertical direction, the driving device is a driving device for moving the discharge member forward and backward, and the liquid material discharge device is an ejection type discharge device for ejecting liquid droplets from a discharge port by causing the forward moving plunger to collide with a valve seat formed by an inner bottom surface of a liquid chamber or by causing the forward moving plunger to stop immediately before the collision with the valve seat.

The method for discharging a liquid material according to the present invention is a method for discharging a liquid material using the liquid material discharge apparatus.

In another aspect of the present invention, the liquid material discharge method is a liquid material discharge method for discharging a liquid material containing a filler by using a liquid material discharge apparatus including the plurality of stirring blades

Effects of the invention

According to the present invention, it is possible to provide a liquid material discharge apparatus which can reduce the amount of liquid material to be discarded at the time of cleaning and has excellent cleaning performance.

Drawings

Fig. 1 is a front sectional view of a liquid material discharge apparatus according to embodiment 1 (when an insertion member is inserted).

Fig. 2 is a front sectional view of the liquid material discharge apparatus according to embodiment 1 (when the insertion member is removed).

Fig. 3 is a front cross-sectional view for explaining a method of cleaning the liquid feeding path, wherein (a) shows when the insertion member is inserted, (b) shows when the insertion member is pulled out, (c) shows when the cotton bud is prepared, (d) shows when the cotton bud is inserted into the center of the liquid feeding path, and (e) shows when the cotton bud is inserted near the terminal end of the liquid feeding path.

Fig. 4 is a front sectional view of a main part of the liquid material discharging apparatus of embodiment 2.

Fig. 5 is a front view of the insert member of embodiment 3.

Fig. 6 is a front sectional view of a main part of the liquid material discharging apparatus of embodiment 3.

Fig. 7 is a front view of the insert member of embodiment 4.

Fig. 8 is a front sectional view of a main part of the liquid material discharging apparatus of embodiment 4.

Fig. 9(a) is a front view of the insertion member according to embodiment 5, and (b) is a front view of the insertion member according to embodiment 6.

Fig. 10(a) is a front view of the insertion member according to embodiment 7, and (b) is a front view of the insertion member according to embodiment 8.

Fig. 11 is a front sectional view of a conventional liquid material discharge apparatus.

Detailed Description

(existing examples)

The conventional liquid material discharging apparatus shown in fig. 11 mainly includes a main body upper part 81, a main body middle part 82, a 1 st liquid transporting member 83, a 2 nd liquid transporting member 84, a main body lower part 85, and a nozzle member 86.

A piston 16 connected to the rear portion of the discharge member 11 is disposed in a vertically slidable manner in a piston chamber 15 formed in the main body upper portion 81. In the piston chamber 15, pressurized air is supplied from an air supply source 63 via an electromagnetic switching valve 61 and a pressure regulator (regulator) 62.

The discharge member 11 is a rod-shaped body having a tapered tip, and the tip is located in a liquid chamber 87 formed in the 1 st liquid transport member 83, the main body lower portion 85, and the nozzle member 86. The discharge member 11 is reciprocated by the pressurized air from the air supply source 63 and the action of the spring 17, and thereby the liquid material can be discharged from the discharge port formed at the lower end of the nozzle member 86.

The liquid chamber 87 communicates with the liquid feeding passage 88 through an opening provided in an upper side surface of the liquid chamber 87.

A bolt 89 is screwed into a side opening provided at an end of the liquid feeding passage 88 opposite to the liquid chamber 87. When the liquid sending passage 88 is filled with the liquid material, the plug 89 is detached to remove air bubbles.

The liquid feeding passage 88 communicates with the storage tank 91 via a pipe. The pressurized air from the air supply source 93 whose pressure is adjusted by the pressure reducing valve 92 is supplied to the upper space of the storage tank 91.

In the conventional liquid material discharge device, the liquid feeding path 88 is narrow enough to be inserted by a common industrial cotton swab, and therefore, there is a problem that it is difficult to remove the liquid material remaining in the liquid feeding path.

EXAMPLE 1 embodiment

A liquid material discharge apparatus 1 according to embodiment 1 of the present invention shown in fig. 1 mainly includes a main body upper portion 2, a main body lower portion 3, a liquid transport member 4, a nozzle fixing member 5, a nozzle member 6, and a control portion 64.

The upper body 2 is a block-shaped member having a rectangular parallelepiped shape, and a piston chamber 15 is formed inside. A piston 16 connected to the rear portion of the discharge member 11 is disposed in the piston chamber 15 so as to be vertically slidable. The side surface of the piston 16 is annularly provided with a seal member 22, whereby the airtightness of the upper space and the lower space of the piston chamber 15 can be maintained. An annular seal member 21 is fitted into a recess provided in the bottom surface of the piston chamber 15. A through hole 23 extending in the vertical direction is provided in the center of the recess in the bottom surface of the piston chamber 15. The discharge member 11 is inserted through the seal member 21 and the through hole 23.

Pressurized air is supplied from the electromagnetic switching valve 61 into the space below the piston chamber 15. The electromagnetic switching valve 61 communicates with an air supply source 63 that supplies pressurized air via a pressure regulator (regulator) 62. The pressure regulator 62 is constituted by, for example, a pressure reducing valve or a combination of a pressure reducing valve and a surge tank. The electromagnetic switching valve 61 operates to switch between a 1 st position where the pressure regulator 62 communicates with the space below the piston chamber 15 and a 2 nd position where the space below the piston chamber 15 communicates with the outside (the atmosphere) in accordance with a command from the control unit 64. When the electromagnetic switching valve 61 is set to the 1 st position, the discharge member 11 moves backward by the action of the pressurized air, and when the electromagnetic switching valve 61 is set to the 2 nd position, the discharge member 11 moves forward by the elastic force of the spring 17. That is, the electromagnetic changeover valve 61 and the spring 17 constitute a driving device that drives the discharge member 11.

The control unit 64 is a computer that controls the operation of the electromagnetic switching valve 61.

In the present embodiment, the electromagnetic switching valve 61 is directly fixed to the main body upper portion 2, but may be disposed at a position separated from the main body upper portion 2 via a pipe (pressure pipe) or the like.

The discharge member 11 is a cylindrical valve body and extends vertically through the upper body 2, the lower body 3, and the liquid transport member 4. The lower end of the discharge member 11 is positioned in the liquid chamber 12, and when the discharge member 11 is separated from a valve seat formed on the inner bottom surface of the liquid chamber 12, the discharge port 7 communicates with the liquid chamber 12 to discharge the liquid material, and when the discharge member 11 is seated on the valve seat, the communication between the discharge port 7 and the liquid chamber 12 is blocked to stop the discharge. Since the diameter of the discharge member 11 is smaller than the diameter of the liquid chamber 12, the side peripheral surface of the discharge member 11 does not abut against the inner surface of the liquid chamber 12. Since the friction generated on the side circumferential surface of the discharge member 11 is minimized, the discharge member 11 can be moved at high speed.

In addition, it is needless to say that the following embodiments of the discharge device 1 different from the present embodiment can be applied to the technical idea of the present invention: (a) a seat type jet system in which a valve body (discharge member) is caused to collide with a valve seat to discharge a liquid material from a discharge port; or (b) a non-seating type spray type in which the valve element (discharge member) is moved and then stopped so as to eject the liquid material from the discharge port without colliding with the valve seat. In the jet type discharge device, a discharge member having a tip end portion with a width smaller than that of the liquid chamber is used in order to move the discharge member forward and backward at a high speed.

In fig. 1, the shape of the tip of the discharge member 11 is a flat surface, but the present invention is not limited thereto, and for example, the tip may be spherical, concave, tapered, or provided with a projection at a position facing the discharge port 7. The discharge member 11 is not limited to a cylindrical valve body, and may be constituted by a rotating screw, for example. The discharge member to which the present invention is directed includes a rod-shaped member extending in the vertical direction, which discharges the liquid material in the liquid chamber from the discharge port by reciprocating forward and backward movement or rotational movement. Examples of the driving device for driving the discharge member include an electric motor, a piezoelectric element, an elastic body such as a spring, a switching valve for pressurized air, and a pneumatic actuator.

The rear portion of the discharge member 11 is connected to a piston 16, and the piston 16 is biased downward by a spring 17. The spring 17 is a coil spring, and a rear end portion of the discharge member 11 and a stroke adjustment screw 19 are arranged in an internal space of the spring 17 to face each other. The stroke adjustment screw 19 is connected to a knob portion 18 inserted into the upper surface of the upper body portion 2, and the final retracted position of the discharge member 11 can be adjusted by rotating the knob portion 18.

A main body lower portion 3, which is a rectangular parallelepiped block-shaped member, is disposed below the main body upper portion 2. The through hole penetrating the body lower portion 3 in the vertical direction has a larger diameter than the discharge member 11, and the discharge member 11 is inserted therethrough. A liquid transport member 4 that is wider in the horizontal direction than the main body lower portion 3 is disposed below the main body lower portion 3. A nozzle holder 5 is disposed below the liquid transport member 4. The nozzle holder 5 has a bowl shape having an opening on the bottom surface, and the liquid transport member 4 and the nozzle member 6 are coupled by holding the flange portion of the nozzle member 6 inserted into the opening. The liquid feeding unit 4 and the nozzle unit 6 can be easily detached from the body lower portion 3 and the nozzle mount 5.

The liquid transport member 4 has a through hole with a step extending in the vertical direction. An annular seal member 14 is disposed at a step portion of the stepped through-hole, and a space below the seal member 14 of the stepped through-hole constitutes a part of the liquid chamber 12. Since the width (diameter) of the liquid chamber 12 is larger than the width (diameter) of the discharge member 11, the side peripheral surface of the discharge member 11 does not abut against the inner surface of the liquid chamber 12. The discharge member 11 is inserted into a hole of the seal member 14 having substantially the same diameter as the discharge member 11.

The liquid transport member 4 includes an extension 41 extending straight in the horizontal direction from an extension line portion of the side surface of the main body (2, 3). A liquid feeding passage 13 extending straight in the horizontal direction is formed inside the extension portion 41. The liquid feeding path 13 has a uniform diameter over the entire length. The extension 41 is configured to have a length that facilitates replacement of the storage container 51. As shown in fig. 11, the extension 41 may be detachably formed from an extension line portion on the side surface of the main body (2, 3) (that is, the extension 41 may be formed from the 2 nd liquid transport member 84 in fig. 11).

The height (width in the vertical direction) of the liquid transport member 4 is smaller than the height (width in the vertical direction) of either the main body upper part 2 or the main body lower part 3. The liquid transport member 4 of the present embodiment is configured to be compact (thin) in the vertical direction, and is therefore suitable for cleaning by an ultrasonic cleaning machine.

Further, unlike the present embodiment, a liquid transport member in which a liquid transport passage extending straight in an oblique direction is formed may be used (however, the width in the vertical direction is increased).

The liquid chamber 12 communicates with the liquid feeding passage 13 through an opening provided in an upper side surface of the liquid chamber 12. The diameter of the liquid feeding path 13 is preferably 2.5mm to 10mm (preferably 3mm or more, and more preferably 4mm or more) in a size that allows insertion of an industrial cotton swab. Generally, the diameter of the head of an industrial cotton swab is about 5 mm.

An upper opening 44 provided on an upper surface of the liquid sending passage 13 near an end opposite to the liquid chamber 12 communicates with the reservoir 51, and the liquid material in the reservoir 51 is supplied to the liquid sending passage 13 through the upper opening 44.

The reservoir 51 is a commercially available resin or metal syringe, and is detachably attached to the liquid transport member 4 by the reservoir connector 43. The container coupling member 43 couples the lower end of the storage container 51 to the extension 41 of the liquid transport member 4, and positions the storage container 51 so as to be located on the side surface of the main bodies (2, 3). An adapter 52 connected to a pressure reducing valve 53 through a pipe is attached to an upper opening of the reservoir 51. Pressurized air from an air supply source 54 whose pressure is adjusted by a pressure reducing valve 53 is supplied to the upper space of the reservoir 51.

The insertion member 30 is inserted through a side opening 45 provided at an end of the liquid feeding passage 13 opposite to the liquid chamber 12. A thread groove 42 is formed on the inner peripheral surface of the liquid feeding passage 13 near the side opening 45.

The insertion member 30 includes: a rod-shaped insertion portion 31; a filling part 32 provided at an end of the insertion part 31; and a knob portion 33 connected to the insertion portion 31 and the filling portion 32.

The insertion portion 31 is a cylindrical member having a smaller diameter than the liquid feeding path 13, and has a length 1/2 to 1 time (preferably 2/3 to 1 time) the length L of the liquid feeding path 13. In order to prevent the inner peripheral surface of the liquid feeding passage 13 from being damaged when the insertion portion 31 is inserted into and removed from the insertion portion 31, it is preferable that at least the surface of the insertion portion 31 is made of a material softer than the inner peripheral surface of the liquid feeding passage 13, and for example, when the inner peripheral surface of the liquid feeding passage 13 is made of metal, the surface (or the entire) of the insertion portion 31 is formed of rubber or resin.

In embodiment 1, the diameter of the liquid feeding path 13 is set to 3mm, and the diameter of the insertion portion 31 is set to 2 mm. In embodiment 1, the cross-sectional shape of the insertion portion 31 is similar to the cross-sectional shape of the liquid feeding path 13. When the insertion portion 31 is inserted into the liquid feeding passage 13 and the knob portion 33 is rotated and screwed, the insertion portion 31 can be fixed in a state of being positioned on the center axis of the liquid feeding passage 13.

By inserting the rod-like insertion portion 31 into the liquid feeding passage 13, the volume of the liquid feeding passage 13 is reduced, and the amount of the liquid material remaining in the liquid feeding passage 13 can be reduced, so that waste of the liquid material discarded when the liquid transport member 4 is cleaned can be reduced. By preparing in advance a plurality of insertion members 30 having insertion portions 31 of different cross-sectional areas, the amount of liquid material supplied from the liquid sending passage 13 to the liquid chamber 12 can be adjusted according to the application. For example, when a liquid material having a high viscosity is used, the insertion member 30 having a smaller cross-sectional area of the insertion portion 31 than the insertion member 30 used for a liquid material having a low viscosity is used. When the discharge operation in which the cross-sectional area of the insertion portion 31 is preferably set to zero coexists, the plug 89 of the conventional example may be used as one of the plurality of insertion members 30.

The filling portion 32 is a cylindrical portion having a larger diameter than the insertion portion 31, and has a thread groove formed on the surface thereof. The filling portion 32 is configured to have a length that closes the flow path connected to the side opening 45 so as to prevent air bubbles from remaining in the flow path connected to the side opening 45. The insertion member 30 may be fixed to the liquid transport member 4 by a fixing member without forming a screw groove in the filling portion 32.

The knob portion 33 is a cylindrical portion having a larger diameter than the filling portion 32, and has an anti-slip finish on the surface thereof. When the insertion member 30 is inserted into the side opening 45 provided on the side surface of the liquid transport member 4 and the knob portion 33 is grasped by a hand and rotated in the 1 st direction, the thread groove on the surface of the filling portion 32 is screwed into the thread groove 42, and when the knob portion is rotated in the 2 nd direction, the screwed state is released, and the insertion member 30 can be pulled out.

The side opening 45 provided on the side surface of the liquid transport member 4 may be used as an air bubble removal port when the liquid material is filled into the liquid transport path 13 before the start of the discharge operation. When the liquid sending passage 13 is filled with the liquid material, the insertion member 30 is detached from the liquid sending member 4 in advance, and after the outflow of the liquid material is confirmed from the discharge port, the insertion member 30 is attached.

Fig. 2 is a front sectional view of the liquid material discharge apparatus 1 when the insertion member 30 is pulled out. A liquid material (not shown) adheres to the surface (circumferential surface) of the inserted portion 31. In order to reduce the amount of the liquid material remaining in the liquid feeding path 13 at the time of extraction, irregularities may be formed on the surface of the insertion portion 31 or an annular ridge portion for scraping may be formed (see embodiment 3 described later).

Fig. 3 is a front cross-sectional view for explaining a method of cleaning the liquid feeding path 13, in which (a) shows a state in which the insertion member 30 is inserted into the liquid feeding path 13, (b) shows a state in which the insertion member 30 is pulled out from the liquid feeding path 13, (c) shows a state before the cotton swab 70 is inserted into the liquid feeding path 13, (d) shows a state in which the cotton swab 70 is inserted into the center of the liquid feeding path 13, and (e) shows a state in which the cotton swab 70 is inserted into the vicinity of the terminal end of the liquid feeding path 13.

In fig. 3, the remaining liquid material is illustrated in grey. As shown in fig. 3(b), the amount of the liquid material remaining in the liquid feeding path 13 when the insertion member 30 is pulled out from the liquid feeding path 13 is small.

As shown in fig. 3(d) and (e), the liquid feeding path 13 can be easily cleaned by inserting the cotton swab 70 into the liquid feeding path 13 and then moving the cotton swab forward and backward. After the cleaning by the cotton swab 70, the cleaning time can be shortened when the liquid transport member 4 is cleaned by the ultrasonic cleaning machine. The extracted insertion member 30 may be cleaned by an ultrasonic cleaning machine.

According to the liquid material discharge device 1 of embodiment 1 described above, the amount of the liquid material supplied to the liquid chamber 12 can be adjusted by the insertion member 30, and the waste of the liquid material discarded when the liquid transport member 4 is cleaned can be reduced. Further, the sectional area of the liquid feeding path 13 can be increased as compared with the case where the insertion member 30 is not used, and therefore, the cleaning time of the liquid feeding path 13 can be shortened. Further, since the liquid feeding path 13 can be formed to have a larger diameter than that of the conventional one, it is possible to easily perform visual confirmation after cleaning.

EXAMPLE 2 EXAMPLE

The liquid material discharge apparatus 1 according to embodiment 2 shown in fig. 4 is mainly different from embodiment 1 in that: the extension 41 includes a screw groove 42 formed at the outer periphery of the end portion, and the insertion member 30 includes a screw groove 35 formed at the groove 34. In the following description, points of importance are different from those in embodiment 1, and common elements will not be described.

The extending portion 41 of embodiment 2 has a small-diameter cylindrical portion 46 at its end, and a thread groove 42 is formed on the outer periphery of the cylindrical portion 46. The insertion member 30 includes an annular groove 34 formed inside the knob portion 33. A screw groove 35 is formed on the outer periphery of the groove 34, and the insertion member 30 can be fixed by screwing with the screw groove 42 of the extension portion 41.

Since other configurations are the same as those in embodiment 1, descriptions thereof are omitted.

The liquid material discharge device 1 according to embodiment 2 described above can also obtain the same operational effects as those of embodiment 1. Further, since the screw grooves (35, 42) are not in contact with the liquid material, there is no problem that the dried liquid material adheres to the screw grooves.

EXAMPLE 3

The insertion member 30 according to embodiment 3 shown in fig. 5 is mainly different from embodiment 1 in that: the outer periphery of the insertion portion 31 is formed with a ridge portion 36 and a spiral groove 37. In the following description, points of importance are different from those in embodiment 1, and common elements will not be described.

The insertion portion 31 of embodiment 3 has a plurality of ridges 36 and helical grooves 37 formed on the outer periphery thereof. The ridges 36 have the same width, and the spiral groove 37 has the same width from the starting point to the ending point. When the insertion portion 31 is inserted into the liquid feeding passage 13, the spiral groove 37 functions as a flow path for supplying the liquid material to the liquid chamber 12 by the ridge portion 36 coming into contact with the inner peripheral surface of the liquid feeding passage 13. Fig. 6 is a front cross-sectional view showing a state in which the insertion member 30 is attached to the liquid feeding path 13 (the O-ring 38 is not shown).

In embodiment 3, since the ridge portion 36 abuts against the inner peripheral surface of the liquid feeding passage 13, at least the ridge portion 36 is preferably formed of a low hardness material such as rubber or resin so as not to damage the inner peripheral surface. An O-ring 38 is disposed in a stepped portion between the filler 32 and the knob 33.

Since other configurations are the same as those in embodiment 1, descriptions thereof are omitted.

The insert member 30 according to embodiment 3 described above can also provide the same operational advantages as those of embodiment 1. In embodiment 3, since the scraping action can be obtained by the raised portion 36, the amount of the liquid material remaining in the liquid feeding passage 13 can be reduced as compared with embodiment 1.

EXAMPLE 4 embodiment

The insertion member 30 according to embodiment 4 shown in fig. 7 is mainly different from embodiment 1 in that: the insertion portion 31 is configured to abut against the lower surface of the liquid feeding passage 13. In the following description, points of importance are different from those in embodiment 1, and common elements will not be described.

The insertion portion 31 of embodiment 4 is disposed below the central axis of the insertion member 30. More specifically, the insertion portion 31 is disposed such that the lower end of the insertion portion 31 coincides with the lower end of the filling portion 32.

Fig. 8 is a front cross-sectional view showing a state in which the insertion member 30 is attached to the liquid feeding path 13 (the O-ring 38 is not shown). In embodiment 4, the volume of the liquid feeding path 13 can be reduced by the insertion portion 31 to reduce the amount of the liquid material supplied to the liquid chamber 12.

In embodiment 4, since the insertion portion 31 abuts against the inner peripheral surface of the liquid feeding passage 13, the insertion portion 31 is preferably formed of a low hardness material such as rubber or resin so as not to damage the inner peripheral surface. An O-ring 38 is disposed in a stepped portion between the filler 32 and the knob 33.

Since other configurations are the same as those in embodiment 1, descriptions thereof are omitted.

The insert member 30 according to embodiment 4 described above can also provide the same operational advantages as those of embodiment 1.

EXAMPLE 5 EXAMPLE

The insertion member 30 according to embodiment 5 shown in fig. 9(a) is different from embodiment 1 in that: the insertion portion 31 is formed in a tapered shape with a tapered tip.

Since other configurations are the same as those in embodiment 1, descriptions thereof are omitted.

The insertion member 30 according to embodiment 5 described above can also provide the same operational advantages as embodiment 1.

EXAMPLE 6 EXAMPLE

The insertion member 30 according to embodiment 6 shown in fig. 9(b) is different from embodiment 1 in that: the insertion portion 31 is formed in a tapered shape with a thickened tip. The insertion member 30 according to embodiment 6 is also different from embodiment 1 in that the tip of the insertion portion 31 is formed in a spherical shape.

Since other configurations are the same as those in embodiment 1, descriptions thereof are omitted.

The insertion member 30 according to embodiment 6 described above can also provide the same operational advantages as those of embodiment 1.

(7 th embodiment)

The insertion member 30 according to embodiment 7 shown in fig. 10(a) is mainly different from embodiment 1 in that: a bulge portion 36 having a C-shaped cross section and a communication groove 39 are formed on the outer periphery of the insertion portion 31. In the following description, points of importance are different from those in embodiment 1, and common elements will not be described.

The ridge portion 36 of embodiment 7 has a C-shaped cross section and is configured to have a height (vertical width) in contact with the inner peripheral surface of the liquid feeding passage 13. The C-shaped opening of the ridge portion 36 constitutes an elongated communication groove 39. The communication groove 39 can function as a flow path for supplying the liquid material supplied from the reservoir to the liquid chamber 12.

In embodiment 7, since the ridge portion 36 abuts against the inner peripheral surface of the liquid feeding passage 13, at least the ridge portion 36 is preferably made of a low hardness material such as rubber or resin so as not to damage the inner peripheral surface. An O-ring 38 is disposed in a stepped portion between the filler 32 and the knob 33.

Since other configurations are the same as those in embodiment 1, descriptions thereof are omitted.

The insertion member 30 according to embodiment 7 described above can also provide the same operational advantages as those of embodiment 1. In embodiment 7, the scraping action can be obtained by the ridge portion 36 and the communication groove 39 when the insertion member 30 is pulled out.

EXAMPLE 8 th embodiment

The insertion member 30 according to embodiment 8 shown in fig. 10(b) is mainly different from embodiment 1 in that: includes a plurality of stirring blades 40 arranged in the longitudinal direction. In the following description, points of importance are different from those in embodiment 1, and common elements will not be described.

The insertion portion 31 of embodiment 8 is configured by connecting a plurality of stirring blades 40 in the longitudinal direction. The number of the connecting pieces of the stirring blade 40 is not limited to the illustrated number, and any number (preferably 3 or more) of stirring blades having any shape may be disposed so that the insertion portion 31 has a long and narrow shape (substantially rod-shaped or linear). The surface of the stirring blade 40 of the present embodiment is constituted by a smooth surface, but it is also possible to provide unevenness on the surface of the stirring blade, unlike this.

By attaching the insertion member 30 of embodiment 8 to the liquid feeding path 13, the liquid material passing through the liquid feeding path 13 reaches the liquid chamber 12 while being stirred by the stirring blade 40.

An O-ring 38 is disposed in a stepped portion between the filler 32 and the knob 33.

Since other configurations are the same as those in embodiment 1, descriptions thereof are omitted.

The insertion member 30 according to embodiment 8 described above can also provide the same operational advantages as those of embodiment 1. In embodiment 8, since the liquid material is stirred in the liquid feeding path 13, it is suitable for discharging the liquid material (for example, flux) containing the filler.

Although the preferred embodiments of the present invention have been described above, the technical scope of the present invention is not limited to the description of the above embodiments. Various modifications and improvements can be added to the above embodiment, and the embodiment to which such modifications and improvements are added is also included in the technical scope of the present invention.

Description of the symbols

1: discharge device, 2: main body upper portion, 3: lower body, 4: liquid transport member, 5: nozzle mount, 6: nozzle member, 7: discharge port, 11: discharge member, 12: liquid chamber, 13: liquid feeding passage, 14: sealing member, 15: piston chamber, 16: piston, 17: spring, 18: knob portion, 19: stroke adjustment screw, 21: sealing member, 22: seal member, 30: insertion member, 31: insertion portion, 32: filling section, 33: knob portion, 34: groove, 35: thread groove, 36: bump, 37: helical groove, 38: o-ring, 39: communication groove, 40: stirring wing, 41: extension, 42: thread groove, 43: container coupling member, 44: upper opening, 45: side opening, 46: barrel portion, 51: storage container, 52: adaptor, 53: pressure reducing valve, 54: air supply source, 61: electromagnetic switching valve, 62: pressure regulator, 63: air supply source, 64: control unit, 70: cotton swab, 81: upper body, 82: body middle, 83: 1 st liquid transport member, 84: 2 nd liquid transport member, 85: lower body, 86: nozzle member, 87: liquid chamber, 88: liquid feeding passage, 89: a plug, 91: storage tank, 92: pressure reducing valve, 93: an air supply source.

Claims (19)

1. A liquid material discharge apparatus, comprising:

a discharge member formed of a rod-shaped body;

a liquid chamber which is wider than the discharge member and in which a distal end of the discharge member can be disposed;

an outlet port communicating with the liquid chamber;

a liquid feeding passage for communicating the liquid chamber with the liquid material storage container; and

a driving device for driving the discharging component,

the liquid material discharge device is characterized in that:

the liquid container includes an elongated insertion member that is removably inserted into the liquid feeding path so as not to interrupt communication between the liquid chamber and the liquid material storage container.

2. The liquid material discharge apparatus according to claim 1, wherein:

the liquid feeding passage is constituted by a linear flow path having an end opening,

the insertion member includes an insertion portion for inserting the liquid feeding passage and a filling portion for closing the end opening.

3. The liquid material discharging device according to claim 1 or 2, wherein:

the insertion member has a length 1/2-1 times the length L of the liquid feeding path.

4. A liquid material discharge apparatus according to any one of claims 1 to 3, comprising:

a main body including at least a part of the driving device and having a through hole through which the discharge member is inserted; and

and a liquid transport member detachably connected to the main body, the liquid transport member having an extension portion forming the liquid transport passage.

5. The liquid material discharge apparatus according to claim 4, wherein:

the liquid transport member includes a space constituting a part of the liquid chamber and a seal member through which the discharge member can be inserted.

6. The liquid material discharging device according to claim 4 or 5, wherein:

the liquid delivery member includes an upper opening in communication with the reservoir.

7. The liquid material discharging device according to claim 4, 5 or 6, wherein:

the liquid delivery means comprises a container coupling member that positions and couples the storage container thereto.

8. The liquid material discharging device according to claim 4, 5, 6 or 7, wherein:

the extension portion in the liquid transport member is configured to be detachable.

9. The liquid material discharging device according to any one of claims 1 to 8, wherein:

the insertion member has a concave-convex portion formed on a surface in a longitudinal direction.

10. The liquid material discharge apparatus as claimed in claim 9, wherein:

the uneven portion includes a plurality of raised portions that abut against an inner peripheral surface of the liquid feeding passage, and a groove located between the raised portions.

11. The liquid material discharge apparatus as claimed in claim 10, wherein:

the grooves between the ridges are formed by spiral grooves.

12. The liquid material discharging device according to any one of claims 1 to 11, wherein:

the insertion member includes a plurality of stirring blades arranged in a longitudinal direction.

13. The liquid material discharging device according to any one of claims 1 to 12, wherein:

at least the surface of the insertion member is formed of a material softer than the inner peripheral surface of the liquid feeding passage.

14. The liquid material discharge apparatus as claimed in claim 13, wherein:

at least the surface of the insertion member is formed of rubber or resin.

15. The liquid material discharging device according to any one of claims 1 to 14, wherein:

the insertion member includes a plurality of insertion members having different sectional areas,

any one of the selected insertion members is removably inserted into the liquid feeding path.

16. The liquid material discharging device according to any one of claims 1 to 15, wherein:

the discharge member is composed of a plunger having a tip end portion movable back and forth in the liquid chamber, or a screw having a tip end portion rotatable in the liquid chamber.

17. The liquid material discharging device according to any one of claims 1 to 15, wherein:

the discharge member is a plunger extending in the vertical direction,

the driving device is a driving device for driving the discharging component to move forward and backward,

the liquid material discharge device is a jet type discharge device that ejects liquid droplets from a discharge port by causing a plunger that moves forward to collide with a valve seat formed by an inner bottom surface of a liquid chamber or by causing the plunger that moves forward to stop immediately before the plunger collides with the valve seat.

18. A method of discharging a liquid material, characterized by:

use of a liquid material discharge apparatus as claimed in any one of claims 1 to 17.

19. A method of discharging a liquid material, characterized by:

the liquid material discharging apparatus according to claim 12, wherein the liquid material containing the filler is discharged.