JPH08143149A - Muffling device for part feed line - Google Patents

Abstract

PURPOSE: To suppress the generation of exhaust noise and to prevent feeling of a chill by injection air and flying of impurities by a method wherein through injection of air against a part feed line, a conveyance force is exerted on a part and a muffling means is installed in an air exhaust hole on the advancing direction side of the part. CONSTITUTION: A part feed pipe 15 comprises internal passages of a guide passage 8, a feed hose 13, and a feed pipe 14. A nozzle pipe 16 is welded to a delivery pipe 14, a jet nozzle 17 is opened in the feed pipe 14, and an air hose 18 is connected to the nozzle pipe 16. A conveyance force is exerted on a nut 12 by means of jet air through a jet nozzle 17, air in the part feed line 15 on the advancing direction side of the nut is discharged through an exhaust hole 19 through movement of the nut 12, and movement of the nut 12 is smoothed. A muffling means 20 is attached to the exhaust hole 19. The muffling means 20 has a coupling screwed in a mounting member 21 by means of a screw part and a cup-form porous ventilation resistance member is firmly matched with the coupling pipe.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a muffler for a component supply pipe, and is used in a field where components are conveyed by injecting air into a component supply hose made of synthetic resin.

[0002]

2. Description of the Related Art A type having an exhaust hole for injecting air to a component supply pipe to give a conveying force to the component and exhaust air in the component supply pipe on the traveling direction side of the component, Generally adopted. This is an air injection nozzle installed in the component supply pipeline near one end of the component supply pipeline.
There is an exhaust hole near the end of the component supply line.

[0003]

According to the above-mentioned prior art, when air is expelled through the exhaust hole, a loud exhaust noise (usually a squeaking noise) is generated from that portion, and the work environment is reduced. Is getting worse. Further, when the air blown out from the exhaust holes is blown to the body of the worker, there are problems that it feels cold and impurities such as oil and iron scraps contaminate the worker and peripheral equipment.

[0004]

Means for Solving the Problem and Its Action The present invention is provided to solve the above-mentioned problems.
According to a first aspect of the present invention, in a type having an exhaust hole for injecting air into the component supply pipeline to give a conveying force to the component and discharging the air in the component supply pipeline on the traveling direction side of the component,
The present invention is characterized in that a muffling means is installed in this exhaust hole. The air blown out from the exhaust hole is muffled by the muffling means, and further impurities such as oil and iron scraps do not dissipate to the outside. According to a second aspect of the present invention, in the first aspect, the sound deadening means is composed of a porous ventilation resistance member. By giving a resistance to the air jet, the sound deadening is performed, and the oil or the oil is discharged. Impurities such as dust are captured by the porous member.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the embodiment of FIGS. 1 and 2 will be described. The apparatus here is a supply rod type component supply apparatus. The guide tube 1 is fixed to a stationary member 3 via a bracket 2, and a supply rod 4 is inserted into the stationary member 3 in a retractable state. The supply rod 4 is composed of a large diameter portion 5 and a small diameter portion 6. There is. An air cylinder 7 is fixed to the upper end of the guide tube 1, and its piston rod is connected to the supply rod 4
Is joined to. A curved metal guide tube 8 is welded to the lower end of the guide tube 1, and a guide plate 9 is welded to the end of the guide tube 1 to form a temporary stop chamber 10. The guide plate 9 has a magnet. 11 is inset.
The parts in this embodiment are projection nuts 12.
In the temporary stop chamber 10, the magnet 11 is attracted and held by the magnet 11, and its screw hole is coaxial with the small diameter portion 6.

One end of the supply hose 13 having a rectangular cross section is connected to the guide pipe 8 and the other end is connected to the delivery pipe 14. The supply hose 13 is made of a flexible synthetic resin material, and has a cross-sectional passage area through which the square nut 12 shown in the drawing can pass with a slight gap. An example of the dimensions of the nut 12 is 12 mm in length and 1 in width.
It is 2 mm and the height is 6 mm. The component supply pipe line 15 is constituted by the internal passages of the guide pipe 8, the supply hose 13, and the delivery pipe 14. Nozzle tube 1 for the delivery tube 14
6 is welded, its injection hole 17 is opened in the delivery pipe 14, and the air hose 18 is connected to the nozzle pipe 16.

Air is ejected from the injection hole 17 to impart a conveying force to the nut 12, and the movement of the nut 12 causes the air in the component supply line 15 on the advancing direction side of the nut to be exhausted from the exhaust hole 19 to cause the nut 12 to move. The movement is smooth. A muffling means 20 is attached to the exhaust hole 19, and a mounting member 21 having a U-shaped cross section is attached to the supply hose 1.
It is fitted on the outer side of 3 and fastened with a fixing band 22. The muffling means 20 is fixed to the mounting member 21 so as to communicate with the exhaust hole 19.

The sound deadening means 20 of FIG. 1 is shown in an enlarged manner in FIG. 2, and the description will be made of this. The connecting pipe 23 is screwed into the mounting member 21 by the threaded portion 24, and a cup-shaped porous body is formed. A quality airflow resistance member 25 is firmly fitted to the joint pipe 23. As the ventilation resistance member 25, various materials such as a material formed by compressing metal wool into a cup shape and a material made of a sintered alloy can be adopted, but here, fine spherical particles made of copper alloy are sintered to make it porous. Is shown.

A guide pin 27 of the fixed electrode 26 is arranged at the destination of the supply rod 4, and a steel plate part 28 is fitted to the guide pin 27. When the supply rod 4 advances,
The small-diameter portion 6 skewers the screw hole of the nut and supplies it to the guide pin 27.

Next, the operation of the embodiment described above will be explained. When the nut 12 is moved by the air blown from the jet hole 17, the air in the component supply pipe 15 in front of the nut 12 is vigorously exhausted. Although it is discharged from 19, the air is allowed to pass through the porous ventilation resistance member 25 at this time, so that the flow of gas is throttled in the entire area of the member 25 to muffle the sound. Therefore, unlike the prior art, there is no jet flow from the exhaust hole 19, and the member 25 allows the jet flow to be uniformly dispersed.

Another embodiment of FIG. 3 and subsequent figures will be described. First, in FIG. 3, a foam 29 having air permeability is adhered so as to close the exhaust hole 19, and the above-mentioned air flow resistance is mentioned above. It operates in the same manner as the member 25. The foam 2
Reference numeral 9 is a synthetic resin sponge-like member. In the embodiment shown in FIG. 4, a sound deadening box 30 is welded to the joint pipe 23, a plurality of through holes 31 are opened in this box 30, and a sound absorbing material 32 is filled inside. The sound absorbing material 32 is steel wool or the like. Is suitable. This wool is porous. The air from the exhaust hole 19 is silenced by the sound absorbing effect of the sound absorbing material 32, and is exhausted uniformly from each through hole 31. In the embodiment of FIG. 5, an expansion box 33 is welded to the joint pipe 23, and a through hole 34 is formed in the box 33. Exhaust gas enters the expansion box 33 and undergoes rapid expansion, thereby reducing kinetic energy. Is muted. In the embodiment shown in FIG. 6, a slender sound deadening hose 35 is connected to the joint pipe 23, and the tip of the silencing hose 35 is arranged at a position away from the operator. The air from the exhaust hole 19 receives line resistance as it flows through the muffling hose 35, so that the muffling is performed. In this embodiment, the sound deadening hose can be bent and arranged in any desired shape. In the embodiment of FIG. 7, the sound deadening means 20 as shown in FIG. 2 is attached to the guide tube 8 of FIG. 1, and the sound deadening action is the same as that of FIG.

In the above embodiments, only one muffling means 20 is shown, but a plurality of this muffling means 20 may be arranged as required. Furthermore, if the noise reduction means is clogged with impurities such as oil and iron scraps, it can be reused by washing with gasoline or volatile oil.

[0013]

According to the present invention, since the muffling means is installed in the exhaust hole, exhaust noise generated from the exhaust hole can be prevented. It is effective for improving the working environment because it is silenced by the silencing action such as the porous sound absorbing member, the wool sound absorbing material, the expansion box, and the line resistance by the sound deadening hose. Further, since the jet flow from the exhaust hole is mitigated, the air flow does not hit the human body directly and does not feel cold. Since impurities such as oil and iron scraps are captured by the ventilation resistance member and the like, the surroundings are not polluted.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view generally showing an embodiment of the present invention.

FIG. 2 is an enlarged vertical sectional side view of the muffling means in FIG.

FIG. 3 is a vertical sectional side view showing another type of silencing means.

FIG. 4 is a vertical cross-sectional side view showing another type of silencing means.

FIG. 5 is a vertical cross-sectional side view showing another type of silencing means.

FIG. 6 is a vertical sectional side view showing another type of silencing means.

FIG. 7 is a vertical cross-sectional side view when the muffling means is attached to another location.

[Explanation of symbols]

 15 parts supply pipeline 12 parts 19 exhaust hole 20 silencing means 25, 29, 32 ventilation resistance member

Claims (2)

[Claims] 1. A type having an exhaust hole for ejecting air to a component supply pipe to give a conveying force to the component and to exhaust air in the component supply pipe on the traveling direction side of the component, A silencer for a component supply line, characterized in that a muffling means is installed in the exhaust hole. 2. A silencer for a component supply line according to claim 1, wherein the silencer is composed of a porous ventilation resistance member.