JP3564361B2 - Nozzle device for fluid extrusion - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a nozzle device for extruding a fluid such as an adhesive.
[0002]
[Prior art]
Conventionally, there is a fluid extrusion nozzle device configured as follows.
[0003]
That is, the above-described nozzle device allows the pressurized fluid to be introduced into one end in one direction in the axial direction, and a through hole is formed on the other end in the direction opposite to the one direction on the axis thereof. The nozzle base includes a formed nozzle base, and a nozzle that is located on the axis and has one end in the one direction inserted into the through hole and the other end in the opposite direction projected from the nozzle base. 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.
[0004]
The nozzle base includes an outer pipe that forms the outer shell and has the through hole, and an inner pipe that is internally fitted into the outer pipe by screw means.
[0005]
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.
[0006]
The small-diameter portion is fitted into the through-hole from the inside of the outer pipe, and the inner pipe internally fitted to the outer pipe by screw means is pressed against the large-diameter portion and the large-diameter portion is inserted into the through-hole. The nozzle is pressed against the edge of the hole, so that the nozzle is fixed to the nozzle base.
[0007]
The nozzle device is supported, for example, by an industrial robot, and can move forward and backward toward a desired position, while a work is installed at a predetermined position.
[0008]
Then, while the pressed adhesive is introduced into one end of the nozzle base moved to a desired position with respect to the work, the adhesive is discharged from the other end of the nozzle, and is applied to the work. The electronic component and the like are applied to the work by the adhesive.
[0009]
[Problems to be solved by the invention]
By the way, in the conventional nozzle device, in order to fix the nozzle to the nozzle base, the nozzle base includes an outer pipe and an inner pipe, and a screw means for fitting the inner pipe to 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, much mechanical processing is required for molding the above-mentioned nozzle device, and the molding operation is complicated.
[0011]
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 extrusion nozzle device that can be easily formed.
[0012]
[Means for Solving the Problems]
The nozzle device for fluid extrusion of the present invention for solving the above problems is as follows.
[0013]
According to the first aspect of the present invention, as illustrated in FIG. 1, the pressurized fluid 12 can be introduced into the one end portion 10 in one direction A in the axial direction, and can be introduced in the direction B opposite to the one direction A. The other end 13 has a nozzle base 2 having a through hole 14 formed on its axis 3 and one end 17 located in the direction A on the axis 3 and fitted in the through hole 14. In a nozzle device for fluid ejection provided with a nozzle 4 whose other end 18 in the reverse direction B projects from the nozzle base 2,
[0014]
The nozzle 4 is made of metal, the inner hole has a diameter of 0.3 mm to 3 mm, and one end 17 of the nozzle 4 is formed by plastic deformation of one end of the pipe member 20 having the constant diameter. 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 are increased. By press-fitting the nozzle 4 into the hole 14, the nozzle 4 is fixed to the nozzle base 2 by being pressed against the inner peripheral surface of the through-hole 14 so that the outer peripheral surface of the one end 17 of the nozzle 4 comes into overall surface contact. It is a thing.
[0015]
According to the second aspect of the invention, as illustrated in FIG. 3, the pressurized fluid 12 can be introduced into the one end portion 10 in one direction A in the axial direction, and can be introduced in the direction B opposite to the one direction A. The other end 13 has a nozzle base 2 having a through hole 14 formed on its axis 3 and one end 17 located in the direction A on the axis 3 and fitted in the through hole 14. In a nozzle device for fluid ejection provided with a nozzle 4 whose other end 18 in the reverse direction B projects from the nozzle base 2,
[0016]
The nozzle 4 is made of metal, the diameter of the inner hole is a 0.3 mm to 3 mm, by press-fitting of the nozzle 4 into the through hole 14, the nozzle on the inner peripheral surface of the through hole 14 The nozzle 4 is fixed to the nozzle base 2 by being pressed so that the outer peripheral surface of the one end 17 of the nozzle 4 is entirely in surface contact, and the thickness of the one end 17 decreases in the one direction A. It was made.
[0017]
As shown in FIG. 3, in addition to the invention of claim 2, the invention of claim 3 further includes an inner diameter of each part of the through hole 14 in the axial direction and an axial part of one end 17 of the nozzle 4. And the outer diameters in the above are made substantially constant.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0019]
(First Embodiment)
[0020]
1 and 2 show a first embodiment.
[0021]
In FIG. 1, reference numeral 1 denotes a nozzle device for pushing out a viscous fluid such as an adhesive.
[0022]
The nozzle device 1 includes a cylindrical nozzle base 2, and a circular pipe-shaped nozzle 4 that is disposed on an axis 3 of the nozzle base 2 and fixed to the nozzle base 2. The nozzle base 2 is made of engineering plastic, particularly, a super-polymer material (PPS, PEEK), and the nozzle 4 is made of metal such as stainless steel. Has chemical properties. The diameter of the inner hole of the nozzle 4 is, for example, about 0.3 mm to 3 mm.
[0023]
The nozzle base 2 forms an outer shell and has an outer pipe 6 located on the axis 3 and an inner pipe 3 located on the same axis 3 as the outer pipe 6 and having the inner pipe 3 internally by screw means 7. And an inner pipe 8 to be fitted.
[0024]
A fluid 12 pressurized by a pressure pump 11 can be introduced into one end side 10 in one direction A of the axial direction of the nozzle base 2, and the nozzle base in a direction B opposite to the one direction A can be introduced. A through hole 14 is formed at the other end 13 of the outer pipe 6 at the other end 13 on the axis 3.
[0025]
One end 17 of the nozzle 4 in the one direction A is fitted and fixed in the through hole 14, and the other end 18 of the nozzle 4 in the reverse direction B projects from the nozzle base 2 in the reverse direction B. Have been. The inside of one end portion 10 of the nozzle base 2 communicates with the outside of the other end portion 18 of the nozzle 4 through the inner hole of the nozzle 4.
[0026]
In the above state, the nozzle 4 is fixed to the nozzle base 2, and the fixing structure will be described in more detail.
[0027]
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 (C), and then gradually increased. Each of the cages (D) has a substantially trumpet shape in the one direction A.
[0028]
The inner peripheral surface of the through hole 14 and the outer peripheral surface of the nozzle 4 have substantially the same shape and the same size. 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. The nozzle 4 is fixed to the outer pipe 6 of the nozzle base 2, and the inner peripheral surface of the through hole 14 and the outer peripheral surface of the one end 17 of the nozzle 4 are brought into contact with each other. The seal between them is sufficient.
[0029]
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 the one end 17 is pressed against the inner peripheral surface of the through-hole 14, and The nozzle 4 is more securely fixed to the outer pipe 6 of the base 2.
[0030]
In FIG. 2, the material of the nozzle 4 is a pipe material 20 having a constant diameter. The cone-shaped pressurizing body 21 is inserted into one end of the nozzle 4 in a cold or hot state in a pressurized manner to plastically deform. By doing so, the one end 17 of the flared nozzle 4 is formed.
[0031]
An example of use of the nozzle device 1 is as described in the related art.
[0032]
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 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 through hole 14.
[0033]
For this reason, the fixing of the nozzle 4 to the nozzle base 2 is achieved by press-fitting the 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 outside as in the related art. A pipe, an inner pipe, and screw means for internally fitting the inner pipe to the outer pipe, and the nozzle has a large-diameter portion and a small-diameter portion, and these are mechanically pressurized. In comparison with the above, less machining is required, so that the nozzle device 1 can be formed more easily.
[0034]
Moreover, 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 opposite direction B, that is, the fluid flowing through the nozzle 4 12 are tapered in the flow direction. 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. The separation of the nozzle 4 from the nozzle 2 is prevented.
[0035]
Therefore, while the nozzle device 1 can be easily formed, the nozzle 4 is fixed to the nozzle base 2 more firmly.
[0036]
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.
[0037]
Further, since the nozzle base 2 is made of engineering plastic, the through hole 14 can be easily formed by cutting. The nozzle base 2 is made of engineering plastic and has a coefficient of thermal expansion larger than that of the nozzle 4 made of metal. Therefore, the nozzle base 2 is inserted into the through hole 14 of the nozzle base 2. This work can be easily carried out when press-fitting (shrink fit) hot and fixing.
[0038]
Therefore, molding of the nozzle device 1 can be further facilitated.
[0039]
Although the above description is based on the illustrated example, the nozzle base 2 may be configured with the outer pipe 6 alone without the screw means 7 and the inner pipe 8.
[0040]
Also, the nozzle base 2 and the nozzle 4 together aluminum, may be a concept made of metals including light metals such as titanium, in this case, the outer peripheral end portion 17 of the inner peripheral surface and the nozzle 4 of the through-holes 14 If brazing is applied to the surface, the nozzle 4 is more securely fixed to the nozzle base 2, and the sealing performance is further improved.
[0041]
(Second embodiment)
[0042]
FIG. 3 shows a second embodiment.
[0043]
According to this, the outer peripheral surface of the one end portion 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.
[0044]
For this reason, the fixing of the nozzle 4 to the nozzle base 2 is achieved by press-fitting the 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 outside as in the related art. A pipe, an inner pipe, and screw means for internally fitting the inner pipe to the outer pipe, and the nozzle has a large-diameter portion and a small-diameter portion, and these are mechanically pressurized. In comparison with the above, less machining is required, so that the nozzle device 1 can be formed more easily.
[0045]
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 in the nozzle 4 The thin portion of the one end 17 is deformed by the metal elasticity, so that the thin portion is pressed against the inner peripheral surface of the through hole 14 more strongly.
[0046]
Therefore, while the nozzle device 1 can be easily formed, the nozzle 4 is fixed to the nozzle base 2 more firmly.
[0047]
The inner diameter of each portion of the through hole 14 in the axial direction and the outer diameter of each portion of the one end 17 of the nozzle 4 in the axial direction are made substantially constant.
[0048]
For this reason, the through hole 14 and the nozzle 4 can be more easily formed 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. In addition, molding of the nozzle device 1 can be more easily performed.
[0049]
Other configurations and operations are the same as those of the first embodiment, and therefore, are denoted by common reference numerals in the drawings, and redundant description will be omitted.
[0050]
【The invention's effect】
The effects of the present invention are as follows.
[0051]
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 a through hole is formed on the axis in the other end in the direction opposite to the one direction. Fluid push-out comprising a nozzle base, 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 the nozzle device,
[0052]
The nozzle is made of metal, the inner hole has a diameter of 0.3 mm to 3 mm, and the one end of the nozzle is formed by plastic deformation of one end of a pipe material having the constant diameter, The inner diameter of the through-hole and the outer diameter of the one end of the nozzle are each made to be substantially constant once in the one direction, and then increased, and the nozzle is pressed into the through-hole. The nozzle is fixed to the nozzle base by pressing the inner peripheral surface of the through hole so that the outer peripheral surface of one end of the nozzle is entirely in surface contact.
[0053]
For this reason, since 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, as in the related art, the nozzle base has the outer pipe and the inner pipe, A screw means for internally fitting the inner pipe to the outer pipe, and the nozzle having a large-diameter portion and a small-diameter portion, Therefore, the nozzle device can be easily formed.
[0054]
Further, as described above, the inner peripheral surface of the through hole is in pressure contact with the outer peripheral surface of one end of the nozzle so as to make overall surface contact.
[0055]
Therefore, a sufficient seal is provided between the inner peripheral surface of the through hole and the outer peripheral surface of one end of the nozzle.
[0056]
Moreover, 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, in the flow direction of the fluid flowing through the nozzle. The taper shape is as follows. 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 against the inner peripheral surface of the nozzle, and the detachment of the nozzle from the nozzle base is prevented. Is prevented.
[0057]
Therefore, while the nozzle device can be easily formed, the nozzle is more firmly fixed to the nozzle base.
[0058]
According to the second aspect of the present invention, the pressurized fluid can be introduced into one end in one direction in the axial direction, and a through hole is formed on the axis in the other end in the direction opposite to the one direction. A fluid base comprising: a nozzle base that has been set; and a nozzle that is located on the axis and has 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 nozzle device for
[0059]
The nozzle is made of metal, the inner hole has a diameter of 0.3 mm to 3 mm, and the nozzle is press-fitted into the through-hole. The nozzle is fixed to the nozzle base by pressure contact so that the outer peripheral surface is in overall surface contact, and the thickness dimension of the one end is reduced in the one direction.
[0060]
For this reason, since 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, as in the related art, the nozzle base has the outer pipe and the inner pipe, A screw means for internally fitting the inner pipe to the outer pipe, and the nozzle having a large-diameter portion and a small-diameter portion, And the molding of the nozzle device can be facilitated accordingly.
[0061]
Further, as described above, the inner peripheral surface of the through hole is in pressure contact with the outer peripheral surface of one end of the nozzle so as to make overall surface contact.
[0062]
Therefore, a sufficient seal is provided between the inner peripheral surface of the through hole and the outer peripheral surface of one end of the nozzle.
[0063]
In addition, as described above, the thickness of the one end portion is gradually reduced as it goes in the one direction. For this reason, the thin wall thickness at one end portion of the nozzle is caused by the fluid pressure of the fluid flowing in the nozzle. Is deformed due to its elasticity, so that the portion is more strongly pressed against the inner peripheral surface of the through hole.
[0064]
Therefore, while the nozzle device can be easily formed, the nozzle is more firmly fixed to the nozzle base.
[0065]
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 end of the nozzle in the axial direction are substantially constant.
[0066]
For this reason, as compared with 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, the molding of the through hole and the nozzle becomes easier, and the molding of the nozzle device is correspondingly performed. Can be easier.
[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 device 2 Nozzle base 3 Axis 4 Nozzle 10 One end side 11 Pressure pump 12 Fluid 13 Other end 14 Through hole 17 One end 18 Other end 20 Pipe material A One direction B Reverse direction

Claims (3)

A nozzle base in which a pressurized fluid can be introduced into one end in one direction in the axial direction, and a through hole is formed on the axis in the other end in the opposite direction to the one direction, A fluid ejection nozzle device comprising: a nozzle located on an 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 is made of metal, the inner hole has a diameter of 0.3 mm to 3 mm, and the one end of the nozzle is formed by plastic deformation of one end of a pipe material having the constant diameter, 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 nozzle is pressed into the through-hole. A fluid pushing nozzle device in which the nozzle is fixed to the nozzle base by pressing the inner peripheral surface of the through hole so that the outer peripheral surface of one end of the nozzle is entirely in surface contact. A nozzle base in which a pressurized fluid can be introduced into one end in one direction in the axial direction, and a through hole is formed on the axis in the other end in the opposite direction to the one direction, A fluid ejection nozzle device comprising: a nozzle located on an 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 is made of metal, the inner hole has a diameter of 0.3 mm to 3 mm, and the nozzle is press-fitted into the through-hole. A nozzle device for fluid ejection in which the nozzle is fixed to the nozzle base by pressing the outer peripheral surface so as to make overall surface contact, and the thickness of the one end is reduced in the one direction. 3. The nozzle device according to claim 2, wherein an inner diameter of each of the through holes in the axial direction and an outer diameter of each of the ends of the nozzle in the axial direction are substantially constant.

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