JPS6087945A - air riveter - Google Patents

Abstract

PURPOSE:To obtain an air riveter which scarcely generates an impact and a noise by providing a flow rate control valve on an oil coming and going flow path, decreasing a flow rate when an oil flows into an oil cylinder, and increasing the flow rate at an oil reflux time. CONSTITUTION:A flow rate control valve 36 is provided on an oil chamber side of a flow path 22 for connecting the oil chamber and an oil cylinder. When an air piston is operated, even if a valve body 39 rises, the flow path 22 operates in the same way as a throttle valve through a narrow and small communicating hole 41, and an oil piston moves backward slowly, therefore, an impact of a riveting time is softened. When the operation of the air piston is ended, the valve body 39 descends by its empty weight, and it is supported by a check pin 40, therefore, the flow path 22 is opened widely, and an oil is made to reflow smoothly to the oil chamber. According to this mechanism, the oil reflux quantity is secured in the same way as before, a drop of a work efficiency is prevented, and also an impact and a noise are softened.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industry - Second Field of Application) The present invention relates to the improvement of industrial riveting tools, and is mainly used in the manufacturing and sales industries of tools and indispensable riveting operations, such as: It is widely used in the manufacturing industry of vehicles, aircraft, ships, etc.

(Prior art) Conventional air-revenocouples use a force generated by the operation of an air piston to cause the piled up oil in the oil chamber to flow into the oil cylinder through the oil inlet/output channel, and the incoming oil pressure causes the oil piston to retreat. When the required riveting is performed, no consideration is given to the oil flow Vc flowing in and out of the flow path, and when the oil flows in, the oil flows in multiple paths at the same time as at 4M when the oil flows out. is configured such that the oil flows into the oil cylinder.

When the air piston is activated, the inside of the oil cylinder is simultaneously filled with pressurized oil and the 5th oil piston is suddenly retreated, so it is difficult to avoid generating a large shock when it retreats, and the 4 Samurai have 1 reveno. The gjie blow when the - is cut is so intense that it not only makes a lot of noise, but also wears out the ribenocou itself.

It has the serious disadvantage of being easily damaged, significantly reducing its service life, and its noise and impact.
J'] It also has a major negative impact on the mental and physical health of workers.

(IEL aspect of the present invention) The present invention was developed in order to solve the problems described in 1. Decrease the mail inflow meter and slowly retract the oil piston with l'Ji'tt &, -
1- Alleviate the various drawbacks by alleviating the impact mentioned above. At the same time, when oil is returned to the oil chamber, the amount of oil returned per hour is increased to maintain the same as before, and the return speed of the oil piston is increased. The purpose of this is to maintain the air flow in a constant state and completely prevent a decline in riveting work efficiency.

(4V/b of the present invention) The present invention allows the oil in the oil chamber pressurized by the operation of the air piston to flow into the oil/cylinder through the oil inlet/output passage, and the inflow oil pressure causes the oil to flow into the oil/cylinder. In an air riveting device configured to perform required riveting by retracting a piston, 1. The entire flow control valve mechanism for the oil in and out is provided on the oil chamber side of the oil inlet and outlet flow path, and when oil flows into the oil cylinder at least 1 liter, K &'i-L, the entire flow path is reduced. In addition to the ability to completely reduce the flow when the oil is reduced, it is also possible to expand the flow path and increase the oil return amount per hour when oil is returned to the room. This relates to Knee 1'-Libe Gou, which is characterized by showing the structure.

(Constitutional VC group of the present invention <function)
! : When the oil flows into the oil cylinder, the oil inlet/output passage between the main chamber and the oil lens IJ terminal is completely reduced and the oil flow into the oil lens IJ holder is reduced per hour. When the oil flows back into the oil chamber, the flow path is enlarged to reduce the oil flow rate per hour from 51 to 07.

(Embodiments of the present invention) Below, embodiments of the present invention will be described based on the attached drawing Vrc. In FIG. Talent for forming 3.
This is a manual air reverberation system, in which a Nokfu L gnome 4 is installed in series, and a main frame 5 is connected to the 1- and 1-parts of the neck frame for responding to the main plan. Known 111 (+4. Structure 1 has been removed according to the arrangement. IJ1)
1. The main frame 5 is equipped with a head frame 7 according to the light width of the oil cylinder 6, and the rear end 1F.
11 It is constructed by attaching a case 8 for cutting/A/F +-8 for cutting/A/F +-8, and in the same figure, 9
is the tip of Henotov V-m 7 ☆: No screwed on 11°j
y: Heath, 10 is a jo single yaki interior in the head frame.
-F"Non 1--12. Ji ・(-)゛ ノ/=Spring I;
It is growing.

15H sub-ille/cylinder-6 A-l repiston, +6
fd was screwed onto the oil bottle and its tip. , ii i
C)・-4Fi# Each extraction hole is 1 cut, and 1 noheno 1-I (U cut l!
1. l'i)+・Swing 1 Ribenoku-1 on Futo S-
1-K j '), 4'Jl out 11TI W818
';3) fp% Te'y x B Inner VC<k feed-
3h, 1.3RK Lit will be emitted from the 441 exit hole I7 in the evening.

Knee 1'-7 Ring-width 2 (bow, gill'-71 non-tar-10, air piston 20 and D the air piston': c ('F Bur L for oil 21 in oil chamber 3, oil in/out flow f7822 An air supply mechanism 2 for causing oil to flow into the cylinder 6 through the air supply mechanism 2 and retracting the B7 piston 15 to perform the required riveting.
3, and the air supply function of the air supply mechanism will be described below.
gl (vC hand lever 24'; r: pulled;
Connector rod 25. Lever 26 and air valve //? -27, the eno'-pulp 28 is fully opened, and the 1" double-line air 20 from the air supply source is supplied from the air supply hole 30 to the ventilation hole 3.
1 to the air cylinder 19 +7) Introduce the VC to the back of the Z air piston 20 and insert the air piston 20
In the figure, 32 is a rhythmic spring for the air pulg 28, 33 is a spring for reciprocating the hand lever 24, 34 and 35 is in the air cylinder, 1! : Provide ventilation holes with the outside of the machine.

361 is the force j; j (in,
A roll valve mechanism is provided on the oil chamber side of the oil inlet/outlet passage 22 that communicates the oil chamber 3 and the oil cylinder 6. As shown in the enlarged view, a valve chamber 38 having a valve seat 37 is formed on the oil chamber side of the flow path 22, and a ball-shaped valve body 39 is loosely fitted into the valve chamber, and a ball-shaped valve body 39 is loosely fitted in the valve chamber. Valve body 3
At the same time, the stopper bottle 40 for preventing falling off of No. 9 is fixed, and the valve seat 3 is fixed.
7 is cut out to create a narrow oil communication hole 41. 41, and the oil chamber 3 side and the oil cylinder 6 side are communicated through the oil communication hole even when the valve is closed. It is possible to do so.

L fc car), even if the ball-shaped valve body 39 rises when the air piston 20 is activated (when the oil chamber is full), the flow path 22 will not be completely blocked, and the narrow oil communication will continue. Through holes 41 and 41, the oil in the oil chamber is released little by little through the same action as a throttle valve, and the VC in the oil cylinder 6 is
Since L4 is a person, the oil screw 151'' 1: Retracts gently and effectively alleviates the @ impact that occurs during rebate and 1-stroke. (at low pressure in the oil chamber), the ball-shaped valve body 3
9 is lowered by its own weight and is supported by the stopper 40, but as a result, the m1 path 22 is widely opened, and the oil in the oil/cylinder 6 is smoothly released by the sliding movement of the A oil piston 15. In the room &: It is something that is fiffi.

FIG. 4 shows another embodiment of the inlet/outlet oil flow path control l-roll pulp mechanism 36, in which the ball-shaped valve body 39 is supported by a spring 42 [at point 7].
- This is different from the first embodiment in that the valve body 39 is always pushed toward the valve 1!14:i7 side by the spring 42 and is in the throttled state Vrc8.

Also, since the valve body is pushed downward by the pressure of the oil flowing into the oil chamber at any time, at this time,
The valve body is in fact 1-open, and is otherwise the same as that of the first embodiment.

Figure 5 shows the diversion control valve b3t flI￥3
6] Yet another embodiment is shown, in which a cylindrical valve body 39 is connected to a valve seat 37, and a
The elasticity of No. 2 keeps it pressed all the time. A small-diameter oil communication hole 4:3 is provided in the center of the valve body, which is in constant communication with the oil cylinder side. Similarly, the fitting support 44 of the valve body is also provided with an oil communication hole 45 that communicates with the oil communication hole 1-.

Therefore, even if this fruit is a number example, as in the second example,
The valve body 39 is normally 11M, pushed toward the valve seat side and in a constricted shape.

In addition, when the oil is returned to the boiling chamber, the valve body is pushed downward by the return pressure of the oil, and in fact 1-1 is opened, as in the second example. The rest is the same as that of the first and second embodiments.

(Effects of the Present Invention) According to the present invention, which is constructed as described in 1-1, at least the oil inflow into the oil/cylinder 11:'j K is equal to the time Since the oil inflow amount at the piston can be retreated slowly and smoothly, it is possible to reliably prevent a large shock from occurring when it retreats, and eliminate the various drawbacks mentioned above due to shock. At the same time, when the oil is returned to the oil chamber when the riveting attempt is completed, the amount of oil recirculated per hour is increased and maintained as before, and the return speed of the oil piston is maintained at the normal speed to perform riveting. Low work efficiency T
Is it effective to prevent and prevent damage? It is something that can be played.

[Brief explanation of the drawing]

The figure shows an embodiment of the present invention.
FIG. 2 is an enlarged explanatory view showing an example of the flow rate control valve mechanism of the inlet/outlet mail, and FIG. 3 is a sectional view taken along line A-A in FIG. 2. Fig. 5 is an explanatory diagram showing other examples of the pulp mechanism. 1 Air reverberation chamber, 3 - J oil chamber, 6 oil cylinder, 15 A oil piston, 20 - air piston, 22 oil inlet/output passage. A control mechanism for the flow of oil in and out.

Claims (1)

[Claims] The oil in the oil chamber pressurized by the operation of the air piston, the oil I, flows into the oil cylinder through the inlet/output passage, and the inflowing oil EiE causes the oil histone to retreat and performs the required bending. In the configured air vent system, an oil inflow/outflow control pulp mechanism is provided on the oil chamber side of the oil inflow/outflow path, and the flow path is reduced at least when the oil flows into the oil cylinder. The present invention is characterized in that the amount of oil flowing in per hour can be reduced, and at the same time, when the oil M is flowing into the oil chamber, the flow path can be enlarged to increase the amount of oil returning per hour. Air rivet.