JPH1111598A - Liquid-charging gun - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid-charging gun in which the charging level specified on the basis of the front end position of a injection opening can be easily changed. SOLUTION: A nozzle 20 provided with an air suction passage for a reserve tank and a liquid passage supplying or discharging a liquid is guided by the head 10A to enable vertical slide, and a cylinder 23 forming a cylinder chamber with the outer peripheral face at the periphery of the nozzle 20, and a piston 25 driven by the cylinder is formed at the outer peripheral face of the nozzle. Collars 26, 27 for stoppers are formed to restrict the stroke of the piston 25 at the front end side and base end side of the piston.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to, for example, setting a head at an inlet of a reserve tank in an automobile manufacturing process,
The present invention relates to a liquid filling gun for filling various liquid substances such as brake fluid and engine oil in a vacuum state.

[0002]

2. Description of the Related Art FIGS. 3 and 4 show such a liquid filling gun. Reference numeral 10 denotes both sides 2 fixed to the base 1 with nuts 2a.
It is a case-shaped head having a circular cross-section, which is fixed to the tip of the book support rod 2 with a nut 2b and set in the inlet 9 of the reserve tank. A nozzle 11 having an intake path 11a for vacuum suctioning the inside of the reserve tank and a liquid path 11b for supplying and discharging the liquid material is fitted into the center hole of the head, and the base end has an intermediate portion having a rectangular cross section. Block 3 is bolt 1
It is screwed at 7. The head 10 is provided with a seal packing 10a at the tip end thereof in contact with the inner peripheral surface of the injection port 9, and the piston 6 having a seal packing 10b attached to the tip end of the injection port 9 at the tip end thereof.
1 is provided. This cylinder is supplied with compressed air from a supply / exhaust passage 6 b formed in the head 10. 10c and 10d are also seal packings.

[0003] The head 10 further has a base end pivotally attached by a pin 5a, and a front end 5b extending forward and bent in an L-shape to form a flange 9 formed at the front end of the inlet 9.
There are provided three claws 5 to be engaged with the back surface of a. The pawl is urged in a direction of engagement by a spring 5c, and an actuator ring 7b screwed to two operation rods 7 on both sides engages a concave portion 5d whose inner diameter gradually increases toward the distal end. Thus, when the operation rod 7 moves upward, the claw 5 is turned outward against the spring force and detached from the flange portion 9a.

A liquid supply valve 13, a drain valve and a suction valve (both not shown) disposed in the back of the intermediate block 3 through which the support rod 2 and the operation rod 7 are inserted, and liquid A liquid inlet 14 is provided for detachably connecting a hose distal end derived from the tank, and an intake passage 11 is provided inside.
a and an air passage 3a and a liquid passage 3b communicating with the liquid passage 11b. The base 1 is provided with a handle 7a in which a base end portion 7d having a reduced outer diameter of the operation rod 7 is inserted and screwed with a nut 7c to be slidable.
The base end portion 7d is a guide hole 1 provided in the round bar-shaped end portion 1a.
When the handle 7a is gripped together with the end 1a by the guide bar b, the operating rod 7 is operated in the proximal direction.

The base 1 has a built-in timer, which activates a liquid supply valve 13, a liquid discharge valve, and other related valves to start a control circuit for performing a sequence control of liquid filling. Is installed. That is, air is supplied to the cylinder 6a for a predetermined time so as to operate the piston 6, and is sucked for a predetermined time by a vacuum pump through the intake passages 11a and 3a so that the inside of the reserve tank is evacuated. Road 11b,
Liquid is supplied from 3b to the reserve tank, and subsequently, excess liquid material is drained from the reserve tank for a predetermined time.

When the liquid material is filled into the reserve tank by the liquid material filling gun configured as described above, the distal end peripheral surface of the head 10 comes into contact with the inner peripheral surface of the injection port 9 via the sea packing 10a, and further, the seal is formed. The head 10 is set on the injection port 9 from the vertical direction so that the packing 10b contacts the front end surface of the injection port 9. In this state, the tip of the nozzle 11 occupies a further position in the inlet 9.

When the grip 7a is released, the pawl 5 is engaged with the flange 9a. When the start button 19 is operated, the seal 6b is pressed against the distal end face of the injection port 9 by the operation of the piston 6, and the cylinder 6a presses the head 10, that is, the pin 5a of the claw 5 in the proximal direction by the reaction force. As a result, the engagement of the claw 5 with the flange portion 9a is strengthened, and an airtight state is established. As a result, the liquid can be supplied into the reserve tank, the liquid is filled up to a position higher than the tip position of the nozzle 11 with the liquid for a predetermined time, and then the excess liquid is discharged, and the liquid cannot be discharged. Is lowered to the tip end position of the nozzle 11 to set the liquid level. The nozzle 11 can be replaced by loosening the nuts 2b and 7c, pulling the head forward, and removing the bolt 17.

[0008]

In such a liquid filling gun, when it is necessary to change the liquid level position from the tip end face of the injection port, it is necessary to use another liquid filling gun having a different nozzle size. Or the nozzle had to be replaced.

SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to provide a liquid filling gun capable of easily changing a filling level defined based on a tip position of an injection port.

[0010]

According to the present invention, in order to attain this object, according to the present invention, a head which is set at an inlet of a reserve tank located in front of a base is provided with respect to a reserve tank. A nozzle having a suction path for suctioning and a liquid path for supplying and discharging liquid material, and a spring with a L-shaped bent end that is pivotally connected to the base end and extends in the end direction. A claw that engages the flange portion of the injection port from the side by force, and the piston is pushed along the nozzle so that the seal packing is pressed in the distal direction at the injection port and simultaneously presses the pivot position of the claw in the proximal direction. A driving cylinder is provided, and a handle is provided at the base to release the pawl from the flange.The piston is actuated to evacuate the reservoir tank in an air-tight manner while keeping the reservoir tank airtight, and then the liquid path is over the nozzle tip. A liquid filling gun in which the liquid level is set at the tip of the nozzle by supplying the liquid substance through the liquid path and subsequently discharging the liquid through the liquid path, so that the nozzle can be slid in the vertical direction. A cylinder is formed around the nozzle and forms a cylinder chamber with its outer peripheral surface, and a piston driven by the cylinder is formed on the outer peripheral surface of the nozzle. A stopper that limits the stroke of the piston is formed.

When the piston is driven by the cylinder so as to be restrained by the distal end or the proximal end, the distal end position of the nozzle is selectively set to one of the two filling levels.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A liquid filling gun according to an embodiment of the present invention will be described with reference to FIGS. In these drawings, the same or equivalent parts as those described in FIG. 3 are denoted by the same reference numerals, and description thereof is omitted. Head 10A
The inner cylinder 10B guides the nozzle 20 in which the intake path 22 and the liquid path 21 are formed in the vertical direction so as to be slidable in the vertical direction, and enters the injection port 9, and the inner and outer peripheral seal packings 33a, 33b. A ring-shaped common cylinder 30 for driving the ring-shaped upper and lower pistons 33 and 34 respectively provided with the outer cylinder 10 </ b> C seated on the distal end surface of the injection port 9 and the distal end side of the piston 34 are provided. And an intermediate cylinder 10 </ b> D that enters the inlet 9.

The cylinder 30 is supplied with compressed air from a supply / exhaust passage 32 so that both pistons 33, 34 are provided.
A spring 35 mounted between the base end 11B of the inner cylinder 10B having an enlarged outer diameter and the spring seat of the intermediate cylinder 10D,
Driving between the inner peripheral surface of the outer cylinder 10C and the outer peripheral surfaces of the inner cylinder 10B and the intermediate cylinder 10D in the proximal direction and the distal direction, respectively. The base of the claw 5 is provided with a pin 5a on the piston 33.
It is pivoted by A seal gasket 10a that is in contact with the inner peripheral surface of the injection port 9 is mounted on a flange 10e formed at the tip of the intermediate cylinder 10D. A seal packing 10b that comes into contact with the distal end surface of the injection port 9 is mounted in a concave portion formed at the distal end portion of the outer cylinder 10C.

The intermediate block 3 into which the support rod 2 and the operation rod 7 are inserted and which is mounted on the base end 11B of the inner cylinder 10B has a nozzle outer peripheral surface 2 around a nozzle 20 passing therethrough.
0a, a double-acting cylinder 23 that forms a cylinder chamber 23a is provided. Although not shown, the proximal end 11B is screwed to the distal end of the support rod 2 and the intermediate block 3 is also screwed to the proximal end 11B in the same manner as described above.

A piston 25 around which a ring-shaped seal packing 25a is mounted is formed on the outer peripheral surface 20a of the nozzle, and supply / exhaust passages 24, 24a are provided at the base end and the end side of the piston 25 in the cylinder chamber 23a. ing.
The cylinder 23 drives the piston 25 by the supply of the compressed air from these supply / exhaust passages, and serves as a stopper for the nozzles 20 on the distal end side and the proximal end side of the piston 25 in the cylinder chamber 23a so as to limit the stroke. Are inserted. A valve 29 for turning on and off suction by a vacuum pump is attached to the base end of the nozzle 20, and a guide hole 29 a thereof can be slid in a vertical direction along a guide shaft 29 b screwed to the intermediate block 3. I have. The liquid passage 21 is opened on the outer peripheral surface of the nozzle 20, and a vertically long ring-shaped port 37 is formed at the end of the liquid passage 3c of the inner cylinder 10B communicating with the liquid passage 3b over the sliding range of the opening end. .

The base 1 is provided with a handle for operating the actuator ring 7b as shown in FIG. 3, and the intermediate block 3 is provided with a liquid supply valve 13 and a liquid discharge valve. Reference numerals are used between the nozzle 20 and the inner cylinder 10B, between the intermediate cylinder 10D and the outer cylinder 10C for the inner cylinder, between the intermediate block 3 and the base end 11B of the inner cylinder 10B, and between the intermediate block 3 and the valve 29 with respect to the nozzle outer peripheral surface. Seal packings not marked with are attached.

When the liquid material is filled into the reserve tank by the liquid material filling gun configured as described above, the nozzle 2
When 0 is set to the liquid level position shown by the solid line in FIG.
The air supply / exhaust passage 24 is released to the atmosphere, air is supplied from the air supply / exhaust passage 24a, and the piston 25 is brought into contact with the collar 26 restrained by the base end portion of the intermediate block 3. The head 10A is set vertically in the inlet 9 of the reserve tank to be filled, the seal packing 10a is brought into contact with its inner peripheral surface, and the seal packing 10b is brought into contact with its tip end surface. Base 1
When the handle operation that has pulled the actuator ring 7b through the operating rod 7 is released, the pawl 5 is engaged from the side with the back surface of the flange portion 9a by the spring force.

In this state, when the start button 19 is operated, the piston 34 compresses the seal packing 10a by the operation of the cylinder 30 to press the seal packing 10a against the inner peripheral surface of the injection port 9, and at the same time, the piston 33 moves to the base end side. By pressing the pin 5a to the base end side, the tip 5b of the claw 5
Is firmly engaged with the flange portion 9a, and the reaction force causes the outer cylinder 10C to be displaced in the distal direction so that the seal packing 10b is brought into pressure contact with the distal end surface of the inlet 9 to be in an airtight state. The inside of the reserve tank is evacuated by vacuum suction with good suction efficiency through the straight pipe type suction path 22. Thereby, the liquid can be supplied into the reserve tank, and the liquid material is filled to a position above the tip position of the nozzle 20 by the operation of the liquid supply valve 13, and then the excess liquid material is operated by the operation of the drain valve. The liquid level is set down to the tip position of the nozzle 20 where the liquid is drained and the liquid cannot be drained.

When the filling level is switched to a position further forward than indicated by a two-dot chain line, the air supply / exhaust passage 24a is opened to the atmosphere, air is supplied to the air supply / exhaust passage 24, and the piston 25 is restrained by the base end 11B. (See FIG. 2). In such two-stage switching position, the head 10A is
Loosen and remove the nut from the end of the
In the state where the nozzle 20 is pulled forward by loosening and removing the nut, the collars 26 and 27 can be replaced with ones having different longitudinal widths to further fine-tune the respective switching positions.

While the embodiment in which the head is a double seal type using a piston has been described above, the present invention relates to a head provided with one piston as shown in FIG. Can be applied to a liquid filling gun or the like having a head deformed so as to press the seal packing against the injection port on the cylinder side by utilizing the reaction force.

[0021]

As described above, according to the present invention, the filling level defined by the nozzle tip position of the head set at the injection port can be switched between two stages, and each stopper can be easily selected by selecting a stopper. Can be fine-tuned. For example, it is possible to easily cope with the case where the filling level is changed depending on the type of automobile or the case where two types of vehicles are continuously filled.

[Brief description of the drawings]

FIG. 1 is a view of a liquid filling gun according to an embodiment of the present invention.
It is a longitudinal sectional view corresponding to FIG.

FIG. 2 is a vertical sectional view for explaining the operation of the liquid filling gun.

FIG. 3 is a vertical sectional view of the conventional liquid filling gun taken along line BB in FIG. 4;

FIG. 4 is a sectional view taken along line AA of FIG. 3;

[Explanation of symbols]

 5 Claw 10A Head 9 Inlet 20 Nozzle 21 Liquid path 22 Intake path 23, 30 Cylinder 25, 33, 34 Piston 26, 27 Color

Claims (1)

[Claims] 1. A head which is set at an inlet of a reserve tank located in front of a base is provided with a suction path for suctioning the reserve tank and a liquid path for supplying and discharging liquid material. A nozzle, a claw that is pivotally attached to the base end and extends in the distal direction and bent into an L-shape, and a claw that engages the flange portion of the injection port from the side by spring bias and a seal packing are injected. Provide a cylinder that drives a piston along the nozzle so that it presses the pivotal position of the claw in the proximal direction at the same time as it is pressed in the distal direction at the inlet, and a handle is provided at the base to release the claw from the flange. By operating the piston, the reservoir is made air-tight and the suction tank is evacuated through the intake passage, and then the liquid is supplied through the liquid passage so as to exceed the tip of the nozzle, and then discharged through the liquid passage to discharge the liquid. filling In a liquid filling gun in which the level is set at the tip of the nozzle, the nozzle guides the nozzle to the head so as to be slidable in the longitudinal direction, and a cylinder that forms a cylinder chamber around the nozzle and the outer peripheral surface thereof. Liquid filling, wherein a piston driven by the cylinder is formed on the outer peripheral surface of the nozzle, and a stopper for limiting a stroke of the piston is formed on a distal end side and a proximal end side with respect to the piston. gun.