JPH1057867A - Paste material discharging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the smooth cut of a paste material when separated, and realize a smooth separation. SOLUTION: A syringe 1 is filled with a viscous paste material 5 and when the paste material 5 is discharged to a specified position on a substrate 9 from a nozzle 2 provided on the syringe 1, the nozzle 2 is connected to a motor 3 with gears 4A, 4B, and the driving force of the motor 3 is transmitted to the nozzle 2 through the gears 4A, 4B each time a single batch discharge from the discharge orifice of the nozzle 2 is ended. Further, the nozzle 2 is rotated using the discharge direction of the nozzle 2 as a pivot, so that the paste material 5 is separated while it is twisted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paste material discharging apparatus for discharging a highly viscous paste material such as resin and cream solder to a discharge target such as a substrate.

[0002]

2. Description of the Related Art FIG. 7 is a side view showing the structure of a paste material discharging apparatus disclosed in Japanese Utility Model Publication No. 7-41180, for example. The paste material discharging apparatus shown in FIG. 7 includes a syringe 71, a heater 72, and an air supply unit 73. A substrate 76 to be discharged is disposed below the syringe 71.

The syringe 71 has a syringe body 71a filled with a highly viscous paste material 74, and a tapered nozzle 75 is formed below the syringe body 71a. A discharge port 75a for discharging the paste material 74 is provided at the tip of the nozzle 75, and a heater 72 for heating the paste material 74 passing through the nozzle 75 is attached to a side surface thereof.

An air supply port 71 for receiving air supply from an air supply unit 73 is provided above the syringe body 71a.
b is provided.

Next, the operation will be described. In the paste material discharging apparatus shown in FIG. 7, the syringe body 71a is supplied from the air supply port 71b by the pressurizing operation of the air supply section 73.
Compressed air is supplied to the inside. Syringe body 71a
Is pressed toward the nozzle 75 by the compressed air. As a result, the paste material 74 flows from the syringe body 71a toward the nozzle 75, and is discharged outward from the discharge port 75a of the nozzle 75.

The paste material 7 discharged from the discharge port 75a
4 is supplied to a predetermined position of the substrate 76,
The electronic components mounted on the substrate 76 are connected.

At this time, the viscosity of the paste material 74 passing through the nozzle 75 is reduced by the heating action of the heater 72 and its own physical properties. For this reason, the syringe body 71a
Even if the nozzle 75 has a smaller diameter, the shape of the paste material 74 is improved, so that the discharging operation is performed smoothly.

However, when the discharge portion M is separated from the paste material 74, usually, stringing occurs in the discharge portion M due to the viscous action of the paste material 74, so that the thread pulls down. In this case, there is a possibility that an unnecessary portion (such as a lead frame) of the substrate 76 may be soiled.

For this reason, in recent years, for example, Japanese Patent Application Laid-Open
No. 41 and Japanese Patent Application Laid-Open No. 7-66227 disclose a technique for preventing the stringing by raising and lowering the nozzle by raising and lowering the cam when raising the nozzle, and a pipe for supplying compressed air to the nozzle. There has been proposed a technique for preventing the stringing by making the nozzles communicate with each other and supplying a discharge pressure to a nozzle.

[0010]

However, in a conventional paste material discharging apparatus as disclosed in Japanese Patent Application Laid-Open No. 64-741, when the discharge portion M is separated from the paste material 74, the paste material 74 is vibrated. And the like, so that the stringing of the discharge portion M after separation is suppressed, but the separation cannot be performed smoothly because the paste material 74 and the discharge portion M are not cut smoothly at the time of separation. There was a problem.

Further, in a conventional paste discharging apparatus as disclosed in Japanese Patent Application Laid-Open No. 7-66227, since the stringing is suppressed by applying a discharging pressure to the inside of the nozzle, the breakage at the time of separation is improved. There is a problem that it is not possible to supply an appropriate amount of the discharge portion M to the substrate.

The first object of the present invention is to provide a paste material discharging apparatus capable of improving the cutting performance of the paste material at the time of separation and realizing a smooth separation, in order to solve the above-mentioned problems of the prior art. The purpose of.

A second object of the present invention is to provide a paste material discharging apparatus capable of supplying an appropriate amount of paste material to a discharge target such as a substrate.

[0014]

Means for Solving the Problems The above-mentioned problems are solved,
In order to achieve the object, a paste material discharging apparatus according to the present invention is configured such that a rotating means is directly or indirectly connected to a nozzle, the nozzle is rotated about the discharging direction of the nozzle as an axis, and the rotating means is rotated by a rotation driving means. It is configured to be driven to rotate, and to be operated by the control means each time one ejection is completed.

Therefore, since the nozzle is rotated about the discharge direction of the paste material as an axis, the discharged paste material is cut while being twisted along the discharge direction. Since the cutting is improved, it is possible to realize smooth separation.

In the paste material discharging apparatus according to the next invention, the rotating means is connected to the syringe, the syringe is rotated about the tip of the nozzle as an axis, the rotating means is driven to rotate by the rotary driving means, and the tip of the nozzle is driven by the vertical driving means. The syringe is driven up and down along the vertical direction of
When one discharge is completed, the rotation driving means is operated so that the syringe rotates by a predetermined angle, and thereafter the vertical driving means is operated upward.

Therefore, the syringe is rotated by a predetermined angle around the tip of the nozzle, and thereafter the syringe is driven upward along the vertical direction of the tip of the nozzle. The action is concentrated, and in this case, since the cutting of the paste material at the time of separation is improved, it is possible to realize smooth separation.

In the paste material discharging apparatus according to the next invention, the inside of the syringe is pressurized by the pressurizing means, and the paste material is moved by the air supply means in the nozzle according to the pressurizing operation of the pressurizing means. The air layer is supplied from a predetermined position of the nozzle every time the nozzle moves by a predetermined amount, and the detecting means detects the air layer supplied by the air supply means at the discharge port of the nozzle during the pressurizing operation of the pressurizing means, The control means controls the pressurizing operation by the pressurizing means and the air supply operation by the air supply means according to the detection state of the air layer by the detecting means.

Therefore, while controlling the pressurizing operation in the syringe and the supply of air to the nozzle according to the detection state of the air layer at the discharge port of the nozzle, the predetermined position of the nozzle is determined each time the paste material moves by a predetermined amount. Since the air layer is supplied from the nozzle, the paste material is discharged from the nozzle in a predetermined amount unit, whereby an appropriate amount of the paste material can be supplied to a discharge target such as a substrate.

In the paste material discharging apparatus according to the next invention, the detecting means is a pressure sensor for detecting the air pressure at the discharge port of the nozzle.

Therefore, since the end of the discharge of the paste material is detected from the air pressure of the discharge port of the nozzle by using the pressure sensor, the air layer passing through the discharge port of the nozzle can be easily and easily formed when the paste material is discharged. It is possible to detect accurately.

[0022]

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

(Embodiment 1) FIG. 1 is a perspective view showing Embodiment 1 of a paste material discharging apparatus according to the present invention. The paste material discharging device shown in FIG.
Is filled with a paste material 5 having a viscosity (for example, thixotropic property), and compressed air AIR is supplied into the syringe 1 by a pressurizing operation of an air supply unit 7 so that the nozzle 2 formed at the tip of the syringe 1 The basic configuration is such that the paste material 5 is supplied to a substrate 9 arranged to face the nozzle 2.

The syringe 1 is connected to the motor 3 via gears 4A and 4B. The gear 4B that is rotated by the driving force of the motor 3 is meshed with the gear 4A at a predetermined gear ratio. The gear 4A and the syringe 1 are connected in a positional relationship in which a member such as a ball bearing is interposed between the gear 4A and the nozzle 2, and the nozzle 2 is supported by the gear 4A.

Thus, the rotation mechanism is constituted by the motor 3 and the gears 4A and 4B. In this rotation mechanism, the motor 3
Is rotated and transmitted to the nozzle 2 via the gears 4B and 4A.

The rotating force required for this rotating mechanism is the nozzle 2
From the discharge direction when the paste material 5 is discharged to the substrate 9. Therefore, the rotating mechanism rotates the syringe 1 if the syringe 1 and the nozzle 2 share the same central axis, in addition to the structure of rotating the central axis in the longitudinal direction of the nozzle 2. Alternatively, the nozzle 2 may be rotated.

The control unit 8 is connected to the air supply unit 7 and the motor 3 to control the supply operation (pressurization operation) of the compressed air AIR to the syringe 1 to the air supply unit 7 and to control the paste after discharge. The drive of the motor 3 is controlled for the operation of separating the material 5.

The air supply unit 7 supplies compressed air AIR into the syringe 1 through an air supply pipe (not shown) under the control of the control unit 8. In the syringe 1, a float 6 made of rubber is press-fitted on the paste material 5 in advance, and the compressed air AIR presses the float 6 to discharge the paste material 5 from the nozzle 2.

Next, the operation will be described. FIG. 2 is a perspective view illustrating a discharging operation according to the first embodiment.
In a series of paste material 5 discharge steps, the control unit 8 issues a command to the air supply unit 7 to supply compressed air AIR into the syringe 1. At this time, since the syringe 1 and the substrate 9 move relatively, the discharge amount of the paste material 5 is determined from the relative movement speed during the movement.

The discharge process until one stroke or the formation of dots (dots) is performed from the start of discharge of the paste material 5 to the end of discharge. After the end of the discharge, the control unit 8 stops the operation of the air supply unit 7 and starts the operation of separating the discharged paste material 5 this time.

In this separating operation, first, a drive signal is output from the control unit 8 to the motor 3. The motor 3 starts rotating according to the drive signal, and rotates the gear 4B in the direction of arrow S1. When the gear 4A starts rotating in the direction of the arrow S2 opposite to the arrow S1 with the rotation of the gear 4B, the driving force of the motor 3 is indirectly transmitted to the nozzle 2. As a result, the nozzle 2 starts rotating in a certain direction (the direction of the arrow S2).

When the nozzle 2 starts rotating, since the paste material 5 has a thixotropic property, as shown in FIG.
Causes a twist to be dragged by the directional rotation. With this torsion, the discharge portion T gradually becomes thinner, and finally, the discharge portion T is cut. As a result, the paste material 5 is separated into the nozzle 2 side and the ejection portion M side supplied on the substrate 9.

As described above, according to the first embodiment, since the nozzle 2 is rotated about the discharge direction of the paste material 5, the discharged paste material 5 is cut while being twisted along the discharge direction. In this case, since the cut of the paste material 5 at the time of separation is improved, it is possible to realize smooth separation.

In the first embodiment described above, the rotating mechanism has a structure for rotating the nozzle 2 or the syringe 1, but may have a structure for rotating the substrate 9 side.

(Second Embodiment) In the first embodiment, the paste material 5 is separated by the rotation mechanism. However, as in the second embodiment described below, the The relative movement with respect to the substrate 9 may be used to concentrate the separating action at the discharge site of the paste material 5 to improve the cutting performance.

FIG. 3 is a perspective view showing Embodiment 2 of the paste material discharging apparatus according to the present invention. In FIG.
The same components as those of the above-described first embodiment are denoted by the same reference numerals as those used in FIG. Hereinafter, only different configurations will be described.

The syringe 1 is supported at two points by the holder 10, and the direction and the position are moved in accordance with the movement of the holder 10. The holder 10 has ring portions 10a of the same diameter,
10b is provided, and each of the ring portions 10a and 10b supports the main body of the syringe 1 in a fitted state. Holder 1
The initial state of 0 is a state where the syringe 1 is set upright with respect to the substrate 9 as shown in FIG.

At the lower end of the holder 10, a support member 11 for moving the direction and position of the holder 10 is attached.
Specifically, the syringe 10 attached to the holder 10
The position of the tip of the nozzle 2 and the mounting position of the support member 11 that supports the holder 10 are set at substantially the same height.

The support member 11 has one end rotatably supported by the rotation mechanism 12 and the other end attached to the holder 10.
The rotation mechanism 12 meshes the gear 13A and the gear 13B, makes the gear 13A pivotally support the support member 11, and
This is a configuration in which a motor 14 is supported by B.

According to the connection between the rotating mechanism 12 and the support member 11, the driving force of the motor 14 is transmitted to the support member 11 via the gears 13B and 13A, and the support member 11 rotates. In the rotation of the support member 11, the position of the tip of the nozzle 2 and the mounting position of the support member 11 are set at substantially the same height, so that the holder 10 rotates around the tip of the nozzle 2. At this time, the rotation amount of the motor 1 and the gears 13A,
The inclination due to the rotation of the holder 10 is determined in relation to the gear ratio of 13B.

The rotation mechanism 12 is supported by a vertical drive mechanism 15. The vertical drive mechanism 15 includes an actuator (not shown), and operates the actuator to move the rotation mechanism 12 in the vertical direction (vertical direction at the tip of the nozzle 2).

The control unit 16 includes the air supply unit 7, the rotation mechanism 1
2 (motor 14) and a vertical drive mechanism 15 (an actuator (not shown)). The control unit 16 controls the pressurizing operation to the air supply unit 7 and the operation of supplying the compressed air AIR to the syringe 1, and the motor 3 and the unillustrated operation for separating the paste material 5 after discharging. Performs drive control of the actuator.

Next, the operation will be described. FIG. 4 is a perspective view illustrating an ejection operation according to the second embodiment.

When a series of discharge steps of the paste material 5 are completed as in the first embodiment, the control unit 16 stops the operation of the air supply unit 7 and then, Starts the separation operation.

In this separating operation, first, the control section 16 outputs a drive signal to the motor 14 of the rotating mechanism 12.
The motor 14 starts rotating in accordance with the drive signal, and rotates the gear 13B. When the gear 13B starts rotating, the gear 13A also starts rotating at the same time.
4 is indirectly transmitted to the support member 11.

According to the driving force of the motor 14, the support member 11
Is rotated by a certain amount, as shown in FIG. 4, the holder 10 is tilted by an angle θ in a certain direction (the direction of arrow S3), and accordingly, the syringe 1 is tilted by an angle θ about the tip of the nozzle 2 as an axis.

At this time, since the paste material 5 has thixotropy, the discharge site of the paste material 5 is
The separation action is concentrated and extended according to the inclination of.

After driving the rotation mechanism 12, the control unit 16 outputs a drive signal to an actuator (not shown) of the vertical drive mechanism 15 this time. The actuator moves the rotation mechanism 12 upward (in the direction of arrow S4) by a predetermined distance in accordance with the drive signal, whereby the syringe 1 is also moved in parallel (in the direction of arrow S4). That is, the syringe 1 is moved upward along the vertical direction of the discharge port of the nozzle 2.

With this movement, the discharge portion becomes gradually thinner, and finally, the discharge portion is cut. As a result, the paste material 5 is separated into the nozzle 2 side and the ejection portion M side supplied on the substrate 9.

After the separation, the drive of the actuator and the motor 14 is controlled in the opposite direction to that at the time of the separation.
0 returns to the initial position. That is, the syringe 1 returns to the initial state.

As described above, according to the second embodiment, the syringe 1 is rotated by a predetermined angle about the tip of the nozzle 2, and then the syringe 1 is driven upward along the vertical direction of the tip of the nozzle 2. As a result, the separating action of the paste material 5 is concentrated on the discharge port portion of the nozzle 2, and in this case, the separation of the paste material 5 is improved, so that it is possible to realize smooth separation. It is possible.

In the second embodiment described above, the rotation mechanism 12 has a structure in which the syringe 1 is rotated.
A structure in which the substrate 9 is rotated may be used.

The vertical drive mechanism 15 has a structure for moving the rotating mechanism 12 which is supported, but may have a structure for moving the substrate 9 side.

Further, a structure in which the functions of the rotation mechanism 12 and the vertical drive mechanism 15 are added to the mounting side of the substrate 9 may be adopted.

(Embodiment 3) In Embodiments 1 and 2 described above, a rotation mechanism and a vertical drive mechanism are provided to separate the paste material 5 at the discharge site. As in the third embodiment, the paste material 5 may be separated in the nozzle, and may be discharged at a constant discharge amount at the time of discharge, so that the separation operation after the discharge may be omitted.

FIG. 5 is a perspective view showing Embodiment 3 of the paste material discharging apparatus according to the present invention. In FIG.
The same components as those of the above-described first embodiment are denoted by the same reference numerals as those used in FIG. Hereinafter, only different configurations will be described.

As shown in FIG. 5, the syringe 20 has a structure in which the nozzle 21 at the tip is bent in an S-shape. One end of an air supply pipe 22 is connected to an intermediate portion of the nozzle 21 so as to communicate therewith. The other end of the air supply pipe 22 is connected to an air supply section 26, and compressed air is supplied into the air supply pipe 22 by the air supply section 25.

The discharge port of the nozzle 21 has a pressure sensor 24
Is provided to detect the air pressure at the discharge port. An electromagnetic valve 23 is provided in the air supply pipe 22, and a control unit 2 described later is provided.
Opening and closing operations are performed according to the control of No. 5 to pass or block the compressed air AIR2.

The air supply section 26 supplies the compressed air AIR1 to an air supply pipe (not shown) connected to the syringe 20 or controls the air supply pipe 22 under the control of the control section 25.
Is supplied with compressed air AIR2.

The control unit 25 includes a solenoid valve 23, a pressure sensor 2
4, and is connected to the air supply unit 26, and controls each operation of the solenoid valve 23 and the air supply unit 26 according to the detection state of the pressure sensor 24.

Next, the operation will be described. FIG. 6 is a perspective view illustrating an ejection operation according to the third embodiment.

When the discharging operation is started, the control unit 25
First, the electromagnetic valve 23 is controlled to the open state, the air supply unit 26 is driven, and the compressed air AIR2 is supplied to the air supply pipe 22.
Is introduced. As a result, the nozzle 21 is connected to the air supply pipe 2
2 receives the supply of the compressed air AIR2 and becomes empty.

Thereafter, the control unit 25 controls the solenoid valve 23 to close to stop the supply of the compressed air AIR 2 to the nozzle 21. This time, the compressed air AIR 1 is supplied to the syringe 20 by driving the air supply unit 26. Let it be supplied. Switching to the compressed air AIR1 in this case can be controlled by a mechanism such as an electromagnetic valve, though not shown.

At this stage, the compressed air AIR 1 is supplied by supplying a predetermined amount of the paste material 5 to the nozzle 2.
The control unit 25 moves from the inlet 1 to the outlet.
It is performed according to the control of. With this control, the nozzle 2
In 1, between the communication portion with the air supply pipe 22 and the discharge port,
Paste material 5 is moved by a predetermined discharge amount. Thereafter, the supply of the compressed air AIR1 is temporarily stopped.

Next, the control unit 25 controls the solenoid valve 23 to be in the open state, and supplies the compressed air AIR2 into the nozzle 21 again. At this time, the air supply pipe 2
Since the compressed air AIR2 is introduced into the communication portion with
The paste material 5 is separated by a predetermined discharge amount on the discharge port side with the communicating portion as a side. Then, since an air layer AL is formed at the communication portion, the air layer AL separates the paste material 5 and the separation portion 5b, for example, as shown in FIG.

Thereafter, the control unit 25 controls the solenoid valve 23 to the closed state to supply compressed air AIR1 into the syringe 20 again, and transfers the paste material 5 and the separated portion thereof to the nozzle 2.
After moving the inside of the inner space 0 toward the discharge port by a predetermined discharge amount, the solenoid valve 23 is controlled to the open state, and the compressed air AIR2 is controlled.
The paste material 5 is thereby separated.

As described above, the compressed air AIR1, AIR2
Is repeatedly performed, the paste material 5
As shown in FIG. 6, is discharged from the discharge port in the order of the separation portions 5a and 5b while the air layer AL is interposed between the separation portions 5a and 5b. The ejected leading separation part 5a
Is not dropped on the substrate 9 at a predetermined position (end of the discharge portion M) from the discharge port because separation after discharge is unnecessary.
Connect electronic components, etc.

As described above, according to the third embodiment, while controlling the pressurization in the syringe 20 and the supply of air to the nozzle 21, the predetermined amount of the nozzle 21 moves each time the paste material 5 moves by a predetermined amount. When the air layer AL is supplied from the position and the air layer AL is detected at the discharge port of the nozzle 21, it is confirmed as one discharge, so that the paste material 5 is discharged from the nozzle 21 in a predetermined amount unit, This makes it possible to supply an appropriate amount of paste material to a discharge target such as a substrate.

In particular, the compressed air A
Movement amount of paste material 5 by IR1 and paste material 5
Since the discharge amount can be accurately measured at the supply position of the compressed air AIR2 with respect to, a series of discharge operations can be performed with high accuracy.

Further, the pressure sensor 24 is used to
The end of discharge of the paste material 5 is detected from the air pressure (atmospheric pressure) of the discharge port of the nozzle 21. Therefore, when the paste material 5 is discharged, the air layer AL passing through the discharge port of the nozzle 21 is easily and accurately detected. It is possible to The number of discharges can be obtained by counting the number of times the pressure sensor 24 detects the atmospheric pressure.

In the third embodiment, the discharge amount of the paste material 5 is controlled by supplying the air layer AL into the nozzle 21. However, instead of the air layer AL, a substance such as beads is supplied. The same effect can be obtained. In this case, if a substance such as beads is loaded into the air supply pipe 22 and driven into the paste material 5 by a pressurizing action, the paste material 5 can be partitioned at a predetermined interval similarly to the air layer AL.

In the first to third embodiments, plastic materials such as polypropylene are suitable for the syringes 1 and 20, and epoxy resin and epoxy resin are used for the paste material.
Materials such as cream solder and adhesive are suitable.

[0073]

As described above, according to the present invention, the nozzle is rotated about the discharge direction of the paste material, so that the discharged paste material is cut while being twisted along the discharge direction. In this case, since the cut of the paste material at the time of separation is improved, it is possible to obtain a paste material discharge device capable of realizing smooth separation.

According to the next invention, the syringe is rotated by a predetermined angle around the nozzle tip, and then the syringe is driven upward along the vertical direction of the nozzle tip. In this case, the paste material separating action is concentrated, and in this case, since the cut of the paste material at the time of separation is improved, it is possible to obtain a paste material discharge device that can realize smooth separation.

According to the next invention, while controlling the pressurizing operation in the syringe and the supply of air to the nozzle according to the detection state of the air layer at the discharge port of the nozzle, each time the paste material moves by a predetermined amount. Since the air layer is supplied from a predetermined position of the nozzle, the paste material is discharged from the nozzle in a predetermined amount unit, whereby the paste material capable of supplying an appropriate amount of the paste material to a discharge target such as a substrate can be supplied. A discharge device is obtained.

According to the next invention, the end of the discharge of the paste material is detected from the air pressure at the discharge port of the nozzle using the pressure sensor.
It is possible to obtain a paste material discharge device capable of easily and accurately detecting an air layer passing through a discharge port of a nozzle.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a paste material discharging apparatus according to the present invention.

FIG. 2 is a perspective view illustrating an ejection operation according to the first embodiment.

FIG. 3 is a perspective view showing a paste material discharging apparatus according to a second embodiment of the present invention.

FIG. 4 is a perspective view illustrating an ejection operation according to the second embodiment.

FIG. 5 is a perspective view showing a paste material discharging apparatus according to a third embodiment of the present invention.

FIG. 6 is a perspective view illustrating an ejection operation according to a third embodiment.

FIG. 7 is a side view showing a configuration of a conventional paste discharge device.

[Explanation of symbols]

1,20 syringe, 2,21 nozzle, 3,14 motor, 4A, 4B, 13A, 13B gear, 5 paste material, 7,26 air supply unit, 8,16,25 control unit, 10 holder, 22 air supply tube , 23 solenoid valve,
24 Pressure sensor

Claims (4)

[Claims] 1. A paste material discharging apparatus for filling a syringe with a viscous paste material and discharging the paste material from a nozzle provided in the syringe to a discharge target, wherein the paste material discharging device is directly or indirectly connected to the nozzle. Rotating means for rotating the nozzle about an ejection direction of the nozzle, rotation driving means for rotating the rotating means, and control means for operating the rotation driving means every time one discharge is completed. A paste material discharging apparatus, comprising: 2. A paste material discharging device for filling a syringe with a viscous paste material and discharging the paste material to a discharge target from a nozzle provided in the syringe, wherein the paste material is connected to the syringe, and the syringe is connected to the syringe. Rotation means for rotating the tip of the nozzle as an axis; rotation drive means for rotating the rotation means; vertical drive means for driving the syringe up and down along the vertical direction of the nozzle tip; In this case, the rotation drive unit is operated so that the syringe rotates by a predetermined angle,
And a control means for operating the vertical drive means upward thereafter. 3. A paste material discharging apparatus for filling a syringe with a viscous paste material and discharging the paste material from a nozzle provided on the syringe to a discharge target, wherein a pressurizing unit pressurizes the inside of the syringe. Air supply means for supplying an air layer from a predetermined position of the nozzle each time the paste material moves by a predetermined amount with respect to the paste material moving in the nozzle in accordance with the pressurizing operation of the pressurizing means; Detecting means for detecting an air layer supplied by the air supply means at a discharge port of the nozzle during a pressurizing operation of the pressurizing means; and the pressurizing means according to a detection state of the air layer detected by the detecting means. And a control means for controlling a pressurizing operation by the air supply means and an air supply operation by the air supply means. 4. The paste material discharging apparatus according to claim 3, wherein said detecting means is a pressure sensor for detecting an air pressure at a discharge port of said nozzle.