JP2001300354A - Fluid extruding nozzle device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fluid extruding nozzle device capable of being easily formed. SOLUTION: The nozzle device 1 is provided with a nozzle base 2 with the pressurized fluid 12 introduced into one end 10 in one axial direction A and with a through-hole 14 formed in the other end 13 in the opposite direction B to the direction A on the axial center 3 and a nozzle 4 positioned on the axial center 3 and with one end 17 in the direction A inserted in the through- hole 14 and the other end 18 in the opposite direction B projected from the base 2. The inside diameter of the through-hole 14 and the outside diameter of the one end 17 of the nozzle 4 are transiently practically fixed toward the direction A and then increased, and the outer peripheral face of the one end 17 of the nozzle 4 is abutted on the inner peripheral face of the through-hole 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nozzle device for extruding a fluid such as an adhesive.

[0002]

2. Description of the Related Art Among the above-mentioned fluid pushing nozzle devices, there are those conventionally constituted as follows.

[0003] That is, the above-mentioned nozzle device is capable of introducing a pressurized fluid into one end portion in one direction in the axial direction, and the other end in the direction opposite to the one direction is provided on the axial center thereof. A nozzle base having a through-hole formed therein, and a nozzle located on the axis and having one end in the one direction inserted into the through-hole and the other end in the opposite direction projecting from the nozzle base. ing. The inside of one end of the nozzle base communicates with the outside of the other end of the nozzle through the inner hole of the nozzle.

The nozzle base includes an outer pipe forming the outer shell and having the through hole, and an inner pipe fitted inside the outer pipe by screw means.

On the other hand, one end of the nozzle has a pipe-shaped large-diameter portion, and the other end has a pipe-shaped small-diameter portion.

The small-diameter portion is inserted into the through-hole from the inside of the outer pipe, and the inner pipe internally fitted into the outer pipe by a screw means is pressed against the large-diameter portion to connect the large-diameter portion to the above-mentioned large-diameter portion. The nozzle is pressed against the edge of the through hole, and the nozzle is fixed to the nozzle base.

The above-mentioned nozzle device is supported by, for example, an industrial robot, and can move forward and backward toward a desired position. On the other hand, a work is installed at a predetermined position.

A pressurized adhesive is introduced into one end of the nozzle base moved to a desired position with respect to the work, and the adhesive is discharged from the other end of the nozzle, An electronic component or the like is applied to the work and is bonded to the work by the adhesive.

[0009]

By the way, in the above-mentioned conventional nozzle device, in order to fix the nozzle to the nozzle base, the nozzle base is fitted with the outer pipe and the inner pipe, and the inner pipe is fitted into the outer pipe. And the nozzle has a large-diameter portion and a small-diameter portion, and these are mechanically pressurized.

[0010] For this reason, a large amount of machining is required for molding the nozzle device, and the molding operation is complicated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a fluid-extruding nozzle device which can be easily formed.

[0012]

Means for Solving the Problems A fluid pushing nozzle device according to the present invention for solving the above problems is as follows.

According to the first aspect of the present invention, as shown in FIG. 1, a pressurized fluid 12 can be introduced into one end side 10 in one direction A in the axial direction, and is opposite to the one direction A. The other end 13 in the direction B has a nozzle base 2 having a through hole 14 formed on its axis 3, and the one end 17 in the one direction A located on the axis 3 is fitted into the through hole 14. And a nozzle 4 for ejecting fluid, comprising: a nozzle 4 whose other end 18 in the reverse direction B protrudes from the nozzle base 2;

The inner diameter of the through-hole 14 and the outer diameter of the one end 17 of the nozzle 4 are each made substantially constant once in the direction A, and then increased. The outer peripheral surface of one end 17 of the nozzle 4 is pressed against the inner peripheral surface of the nozzle 14.

According to the second aspect of the present invention, as shown in FIG. 3, a fluid 12 pressurized can be introduced into one end side 10 in one direction A of the axial direction, The other end 13 in the direction B has a nozzle base 2 having a through hole 14 formed on its axis 3, and the one end 17 in the one direction A located on the axis 3 is fitted into the through hole 14. And a nozzle 4 for ejecting fluid, comprising: a nozzle 4 whose other end 18 in the reverse direction B protrudes from the nozzle base 2;

The outer peripheral surface of one end 17 of the nozzle 4 is pressed against the inner peripheral surface of the through hole 14 and the one end 17
Is reduced in the direction A.

As shown in FIG. 3, the third aspect of the present invention further includes, in addition to the second aspect, an inner diameter of each of the through holes 14 in the axial direction and one end 17 of the nozzle 4.
And the outer diameter of each part in the axial direction is made substantially constant.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment)

FIGS. 1 and 2 show a first embodiment.

In FIG. 1, reference numeral 1 denotes a nozzle device for pushing out a viscous fluid such as an adhesive.

The nozzle device 1 includes a cylindrical nozzle base 2 and a circular pipe-shaped nozzle 4 which is disposed on the axis 3 of the nozzle base 2 and fixed to the nozzle base 2. The nozzle base 2 is made of engineering plastic, and is particularly made of ultra-high polymer material (PPS, PPS).
EEK), and the nozzle 4 is made of metal such as stainless steel, all of which have heat resistance, corrosion resistance, and chemical resistance. The diameter of the inner hole of the nozzle 4 is, for example, about 0.3 mm to 3 mm.

The nozzle base 2 forms an outer shell and has an outer pipe 6 located on the axis 3 and a screw means located on the same axis 3 as the outer pipe 6 and having a screw means. 7 and an inner pipe 8 fitted inside.

A fluid 12 pressurized by a pressurizing pump 11 can be introduced into one end 10 of the nozzle base 2 in one direction A in the axial direction. A through hole 14 is formed at the other end 13 of the nozzle base 2 at the end of the outer pipe 6 on the axis 3.

One end 17 of the nozzle 4 in the one direction A is fitted and fixed in the through hole 14.
The other end 18 in the reverse direction B projects from the nozzle base 2 in the reverse direction B. The inside of one end 10 of the nozzle base 2 communicates with the outside of the other end 18 of the nozzle 4 through the inner hole of the nozzle 4.

In the above state, the nozzle 4 is fixed to the nozzle base 2. The fixing structure will be described in more detail.

The inner diameter of the through-hole 14 and the outer diameter of the one end 17 of the nozzle 4 are made substantially constant once in the direction A (C).
It is gradually increased (D), and each has a substantially trumpet shape toward the one direction A.

The inner peripheral surface of the through hole 14 and the nozzle 4
Are substantially the same shape and substantially the same size as the outer peripheral surface. Then, the other end portion 18 of the nozzle 4 is press-fitted into the through hole 14 from the inside of the outer pipe 6, and the outer peripheral surface of the one end portion 17 of the nozzle 4 is entirely inserted into the inner peripheral surface of the through hole 14. It is pressed so that it comes into surface contact,
The nozzle 4 is fixed to the outer pipe 6 of the nozzle base 2, and the seal between the inner peripheral surface of the through hole 14 and the outer peripheral surface of the one end 17 of the nozzle 4 is sufficiently provided.

In the above case, the end of the inner pipe 8 in the reverse direction B is pressed against the one end 17 of the nozzle 4, and this one end 17 is pressed against the inner peripheral surface of the through hole 14. The nozzle 4 is attached to the outer pipe 6 of the nozzle base 2.
Are more securely fixed.

In FIG. 2, the material of the nozzle 4 is a pipe member 20 having a constant diameter, and a cone-shaped pressurizing member 21 is fitted into one end of the nozzle 4 in a cold or hot state in a pressurized manner. By plastic deformation, the one end 17 of the flared nozzle 4 is formed.

An example of the use of the nozzle device 1 is as described in the prior art.

According to the above configuration, the inner diameter of the through-hole 14 and the outer diameter of the one end 17 of the nozzle 4 are each made substantially constant once in the one direction A, and then increased. Thus, the outer peripheral surface of the one end 17 of the nozzle 4 is pressed against the inner peripheral surface of the through hole 14.

Therefore, the nozzle 4 is connected to the nozzle base 2.
Is fixed by press-fitting one end 17 of the nozzle 4 into the through hole 14 of the nozzle base 2, so that the nozzle base is fixed to the outer pipe and the inner pipe and the inner pipe to the outer pipe as in the related art. And a screw means for fitting the pipe inside, and the nozzle has a large-diameter portion and a small-diameter portion, compared to being mechanically pressurized, requiring less machining, Therefore, the molding of the nozzle device 1 can be facilitated accordingly.

Further, the inner peripheral surface of the through hole 14 of the nozzle base 2 and the outer peripheral surface of the one end 17 of the nozzle 4 are both tapered in the reverse direction B. Is formed in a tapered shape in the flow direction of the fluid 12 flowing through. For this reason, the pressing force in the axial direction between the inner peripheral surface of the through hole 14 and the one end 17 of the nozzle 4 is increased by the frictional force of the fluid 12 against the inner peripheral surface of the nozzle 4, and the nozzle base is increased. Separation of the nozzle 4 from the nozzle 2 is prevented.

Thus, the nozzle 4 can be easily fixed to the nozzle base 2 while the nozzle device 1 can be easily formed.

Further, since the nozzle base 2 and the nozzle 4 both have corrosion resistance and the like as described above, they are useful particularly when the workpiece is a chemical or food.

Since the nozzle base 2 is made of engineering plastic, the through hole 14 can be easily formed by cutting. In addition, the nozzle base 2
Is made of engineering plastic, the coefficient of thermal expansion of which is larger than that of the nozzle 4 made of metal.
When the nozzle 4 is press-fitted (shrink fit) hot and fixed, the work can be easily performed.

Therefore, the molding of the nozzle device 1 can be further facilitated.

Although the above description is based on the illustrated example, the nozzle base 2 may be formed by removing the screw means 7 and the inner pipe 8 and only the outer pipe 6.

The material of the nozzle base 2 and the nozzle 4 may be made of resin such as engineering plastic. Further, both the nozzle base 2 and the nozzle 4 may be made of a metal having a concept including a light metal such as aluminum or titanium. In this case, the inner peripheral surface of the through hole 14 and the outer peripheral surface of one end 17 of the nozzle 4 are provided. When brazing is performed between the nozzle base 2 and the nozzle base 2, the nozzle 4 is more securely fixed to the nozzle base 2, and the sealing performance is further improved.

(Second Embodiment)

FIG. 3 shows a second embodiment.

According to this, the outer peripheral surface of the one end 17 of the nozzle 4 is pressed against the inner peripheral surface of the through hole 14 by the press-fitting. Further, the inner diameter of the one end 17 of the nozzle 4 is gradually increased in the one direction A, and the thickness of the one end 17 is gradually reduced in the one direction A. ing.

Therefore, the nozzle 4 is connected to the nozzle base 2.
Is fixed by press-fitting one end 17 of the nozzle 4 into the through hole 14 of the nozzle base 2, so that the nozzle base is fixed to the outer pipe and the inner pipe and the inner pipe to the outer pipe as in the related art. And a screw means for fitting the pipe inside, and the nozzle has a large-diameter portion and a small-diameter portion, compared to being mechanically pressurized, requiring less machining, Therefore, the molding of the nozzle device 1 can be facilitated accordingly.

Further, as described above, the thickness dimension of the one end portion 17 is gradually reduced in the one direction A, so that the fluid pressure of the fluid 12 flowing through the nozzle 4 The thin portion at one end 17 of the nozzle 4 is deformed due to its metal elasticity, and the through hole 14
Is more strongly pressed against the inner peripheral surface.

Therefore, while the nozzle device 1 can be easily formed, the nozzle 4 is more firmly fixed to the nozzle base 2.

The inner diameter of each part of the through-hole 14 in the axial direction and the outer diameter of each part of the one end 17 of the nozzle 4 in the axial direction are made substantially constant.

For this reason, it is easier to form the through-hole 14 and the nozzle 4 than when the inner peripheral surface of the through-hole 14 and the outer peripheral surface of the one end 17 of the through-hole 14 are tapered. Accordingly, molding of the nozzle device 1 can be made easier.

Since other structures and operations are the same as those of the first embodiment, the same reference numerals are given to the drawings, and the duplicated description will be omitted.

[0050]

The effects of the present invention are as follows.

According to the first aspect of the present invention, the pressurized fluid can be introduced into one end in one direction in the axial direction, and penetrates the other end in the direction opposite to the one direction on the axis thereof. A nozzle base having a hole formed therein, and a nozzle located on the axis and having one end in the one direction inserted into the through hole and the other end in the opposite direction projecting from the nozzle base. In a fluid ejection nozzle device,

The inner diameter of the through hole and the outer diameter of the one end of the nozzle are each made substantially constant once in one direction, and then are increased. The outer peripheral surface of one end of the nozzle is brought into pressure contact with the nozzle.

For this reason, the fixing of the nozzle to the nozzle base is achieved by press-fitting one end of the nozzle into the through hole of the nozzle base.
The nozzle base includes an outer pipe and an inner pipe, and screw means for fitting the inner pipe to the outer pipe,
In addition, the nozzle has a large-diameter portion and a small-diameter portion, and requires less machining than when these are mechanically pressurized, so that the nozzle device can be easily formed by that much. Becomes

In addition, the inner peripheral surface of the through hole of the nozzle base and the outer peripheral surface of one end of the nozzle are both tapered in the opposite direction, that is, the flow direction of the fluid flowing in the nozzle. Is formed in a tapered shape. For this reason, the pressing force in the axial direction between the inner peripheral surface of the through hole and one end of the nozzle is increased by the frictional force of the fluid on the inner peripheral surface of the nozzle, and the detachment of the nozzle from the nozzle base is prevented. Is prevented.

Therefore, while the nozzle device can be easily formed, the nozzle is more firmly fixed to the nozzle base.

According to a second aspect of the present invention, the pressurized fluid can be introduced into one end in one direction in the axial direction, and penetrates the other end in the direction opposite to the one direction on its axis. A nozzle base having a hole formed therein, and a nozzle located on the axis and having one end in the one direction inserted into the through hole and the other end in the opposite direction B protruding from the nozzle base. In the fluid extrusion nozzle device,

The outer peripheral surface of one end of the nozzle is pressed against the inner peripheral surface of the through hole, and the wall pressure dimension of the one end is reduced in the one direction.

For this reason, the fixing of the nozzle to the nozzle base is achieved by press-fitting one end of the nozzle into the through hole of the nozzle base.
The nozzle base includes an outer pipe and an inner pipe, and screw means for fitting the inner pipe to the outer pipe,
In addition, the nozzle has a large-diameter portion and a small-diameter portion, and requires less machining than when these are mechanically pressurized, so that the nozzle device can be easily formed by that much. Becomes

Further, as described above, the thickness of the one end portion is gradually reduced in the one direction, so that the fluid pressure of the fluid flowing through the nozzle causes the one end of the nozzle to be reduced. The thin portion of the portion is deformed by its elasticity, and more strongly presses against the inner peripheral surface of the through hole.

Accordingly, while the nozzle device can be easily formed, the nozzle is more firmly fixed to the nozzle base.

According to a third aspect of the present invention, the inner diameter of each portion of the through hole in the axial direction and the outer diameter of each axial portion of one end of the nozzle are made substantially constant.

For this reason, it is easier to form the through-hole and the nozzle as compared to the case where the inner peripheral surface of the through-hole and the outer peripheral surface of one end of the nozzle are each formed into a tapered shape. Can be formed more easily.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a first embodiment.

FIG. 2 is a diagram showing a procedure for forming a nozzle in the first embodiment.

FIG. 3 is a diagram corresponding to FIG. 1 in a second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Nozzle apparatus 2 Nozzle base part 3 Shaft center 4 Nozzle 10 One end side 11 Pressure pump 12 Fluid 13 Other end part 14 Through hole 17 One end part 18 Other end part A One direction B Reverse direction

Claims (3)

[Claims] 1. A pressurized fluid can be introduced into one end in one direction in an axial direction, and a through hole is formed in the other end in a direction opposite to the one direction on the axis thereof. A fluid push-out nozzle device comprising: a nozzle base; and a nozzle located on the axis, the one end in the one direction being fitted into the through hole, and the other end in the opposite direction projecting from the nozzle base. In the above, the inner diameter of the through-hole and the outer diameter of the one end of the nozzle are each made substantially constant once in the one direction, and then increased, and the inner peripheral surface of the through-hole is increased. A fluid pushing nozzle device in which the outer peripheral surface of one end of the nozzle is pressed against the nozzle. 2. A pressurized fluid can be introduced into one end in one direction in the axial direction, and a through hole is formed in the other end in the direction opposite to the one direction on the axis thereof. A fluid push-out nozzle device comprising: a nozzle base; and a nozzle located on the axis, the one end in the one direction being fitted into the through hole, and the other end in the opposite direction projecting from the nozzle base. The nozzle device according to claim 1, wherein an outer peripheral surface of one end of the nozzle is pressed against an inner peripheral surface of the through hole, and a wall pressure dimension of the one end is reduced in the one direction. 3. The fluid extruding device according to claim 2, wherein an inner diameter at each axial portion of the through hole and an outer diameter at each axial portion of one end of the nozzle are substantially constant. Nozzle device.