JPS62132092A - Auto-connector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an auto-connector used for connecting and disconnecting piping of various industrial machines including piping of various machines in steel works.

<Prior art> As a conventional auto connector, for example, JP-A-59-1
There is one shown in Publication No. 5168'7. Its main structure is as shown in FIG. 3, and consists of a pair of connector blocks 50.6o each provided with a poppet valve 51.61. When connecting piping, each block 5
0.60 are placed facing each other with the axes of the poppet valves aligned, and then the two are brought close to each other. When the distance between the blocks becomes S, the protrusions 52.62 at the tips of the movable parts of the poppet valves 51.61 come into contact with each other as shown by the imaginary lines, and when the blocks 50.60 are brought closer together, the poppet valves press against each other, causing the valves to open. When both blocks are in full contact, each valve is fully opened and the pipes are connected. When disconnecting the pipes, K moves the blocks 50.6o backward from each other, contrary to the above-described connection, and each valve self-seals due to the action of the barbs 53, 63, and the pipes are disconnected.

<Problems to be Solved by the Invention> Due to the structure of the conventional auto-connector as described above, it is necessary to move the block toward or backward by a minimum stroke S in the axial direction of the poppet valve when connecting or disconnecting piping. Ta. For this reason,
In the conventional autoconnector shown above, block 5
0' and 60 are in contact with each other, close the poppet valve, and slide one block horizontally or vertically relative to the other block to disconnect the piping, or vice versa. were slid to a position where the axes of the poppet valves coincided with their connecting surfaces touching each other, and in this position it was not possible to open the poppet valve and connect the piping. In addition, when the arranged pipes are connected, a relatively large chamber A is formed between the poppet valves 51 and 61 when both blocks approach each other, so a large amount of air gets mixed into the fluid in the pipes, and conversely, when the pipes are separated, a large amount of air is mixed in. There was a drawback that the fluid in the chamber A having a volume of .

Means for Solving the Problems> This invention enables the poppet valve to be opened and closed with a pair of blocks in contact with each other, and it is necessary to move the block in the axial direction of the poppet valve when attaching and detaching piping. The purpose is to provide an auto-connector without.

The autoconnector according to the present invention includes a pair of blocks, a valve seat formed opposite to a connecting surface of each block, and an inner hole formed in the block and communicating with an opening of the valve seat. A first poppet valve slidably fitted into an inner hole of one block, a spring provided in the inner hole to press the first poppet valve toward its valve seat, and the other block. a second poppet valve slidably fitted into the inner hole of the second poppet valve and a cylinder integrally formed therewith; a spring provided in the inner hole to press in the seating direction; and a piston that is slidably fitted into the cylinder and passes through the second poppet valve at its tip and faces the first poppet valve. - a piston with a rod, a return spring that presses the piston and the piston rod in a direction opposite to the valve seat, and a return spring formed in the cylinder that applies the pressing force of the return spring to the piston and the piston rod; and a cylinder chamber into which pressurized fluid is supplied and discharged to be pushed toward the first poppet valve.

According to the auto-connector of the present invention having the above-described structure, when two blocks are separated or connected to each other but no pressure fluid is supplied to the cylinder chamber. Since each poppet valve is seated on each valve seat by the action of a spring, the piping is in a disconnected state. When pressurized fluid is supplied to the cylinder chamber at the rear end of the cylinder with both blocks connected, the piston moves toward the valve seat against the pressing force of the return spring, and the piston rod moves toward the opposite block. Push open the poppet valve to release it from the valve seat. When this poppet valve reaches the stroke end, the piston stops moving any further and the fluid pressure in the cylinder chamber increases, and the pressing force of this fluid pressure pushes the cylinder and the poppet valve integrally constructed with it toward the valve seat. in the opposite direction to lift the poppet valve off its valve seat. This opens the poppet valves on both blocks and connects the pipes from one block to the other.
Or fluid flows from one block to the other.

When disconnecting the piping, when the pressure in the cylinder chamber is reduced, the piston moves back away from the valve seat due to the action of the return spring, the piston rod also moves back, and the opposing poppet valve is pushed back against the valve seat by the pressing force of the spring. When seated, the valve automatically enters the closed state, and the cylinder and the poppet valve integrated therewith also move toward the valve seat due to the pressing force of the spring, automatically entering the closed state, and the piping is disconnected.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 shows the state of the connector before connection, and FIG. 2 shows the state after connection. First, in Figure 1, la
, lb are paired blocks, and a valve seat 3a is provided on the connecting surface 2a of the first block 1a. The cylindrical body 30 including the valve seat 3a is pressed by a spring 31 toward the second block lb. Inner hole 6a of cylindrical body 30
A poppet valve 7a is slidably fitted inside the valve, and the poppet valve 7a is pressed in the direction of seating on the valve seat 3a by the action of a spring 8a. 5a is a fluid passage connected to the piping. A valve seat 3 is provided on the connecting surface 2b of the second block lb.
b is formed, and a poppet valve 7b is slidably fitted into the inner hole 6b. A cylinder 10 is integrally formed at the rear of the poppet valve 7b, and the poppet valve 7b and cylinder 10 are pressed toward the valve seat 3b by a spring 8b. Poppet valve 7b and cylinder 10
Inside there are a piston 11 and a piston rod 14.
is slidably inserted into the valve seat 3, and these piston 11 and piston rod 14 are pushed back against the valve seat 3 by a return spring 12.
It is pressed in the opposite direction to b. At this time, the length of the piston rod 14 is determined so that the tip of the piston rod 14 is on the same level as the connecting surface 2b of the block 1b, or at a position one degree or more recessed from the connecting surface 2b of the block 1b. 13 is a cylinder chamber in which pressure fluid is supplied and discharged;
5 is a pressure fluid supply/discharge port.

5b is a fluid passage connected to the piping, and 16.17 is an air vent hole during operation.

In the state shown in Figure 1 before connecting the connector, the poppet valve '7
a, 7b are seated on the valve seats 3a, 3b, respectively, by the action of the springs 8a, 8b, and the fluid passages 5a, 5
b is separated. To separate blocks 1a and lb in this state, one block may be moved backward relative to the other block as in the conventional autoconnector shown in FIG. connection surface 2
a % 2b may be moved vertically or horizontally while remaining in contact with each other.

To change the condition from the state shown in FIG. and move it in the direction of the valve seat 3b (to the left in the figure). As a result, the tip of the piston rod 14 pushes open the poppet valve 7a on the block la side against the spring 8a, and releases it from the valve seat 3a. Thereby, the fluid passage 5a communicates with the opening 4a of the valve seat 3a via the fluid passage 18 formed in the poppet valve 7a. When the poppet valve 7a retreats to the stroke end, the piston 11 no longer moves, and the fluid pressure within the cylinder chamber 13 increases. This spoiler poppet valve 7b and the cylinder IO move in a direction (to the right in the figure) away from the valve seat 3b against the spring 8b and the return spring 12, and the poppet valve 7b moves away from the valve seat 3b. At this time, the piston 11 and the piston rod 14 maintain the return spring 12 in a compressed state by the fluid pressure in the cylinder chamber 13, so the poppet valve 7a is maintained in the open state. FIG. 2 shows the state at this time, in which the poppet valves 7a and 7b are both separated from the valve seats 3a and 3b and the openings 4a and 7b are separated from the valve seats 3a and 3b.
4b is in a connected state, and fluid flows from the passage 5a to the opening 4a.
Via X4b to passage 5b, or from passage 5b to 5a
can flow towards.

To return from the state shown in Figure 2 to the original state shown in Figure 1,
The pressure fluid in the cylinder chamber 13 may be discharged. The poppet valves 7a and 'i'b are seated on their respective valve seats and self-sealed by the action of the springs 8a and 8b, while the piston 11 and piston rod 14 are returned to the state shown in FIG. 1 by the action of the return spring 12. .

Effect> In the auto connector of this invention, blocks 1a and lb
When connecting or separating the blocks, both blocks may be moved toward or backward in the axial direction of the poppet valve, or the connecting surfaces 2a and 2b of blocks la and lb may be moved vertically or horizontally while keeping them in contact with each other. Good too,
Axial stroke is not necessarily required (compared to conventional auto connectors, it can be applied to a wide variety of industrial machinery).

It's a hole, when the connecting surfaces of block la
are very close to each other, so the volume of the valve seat opening 4aX4b is much smaller than the chamber A formed when the conventional connector shown in FIG. 3 is connected. Therefore, there is almost no possibility that air will be mixed into the fluid when the connectors are connected, or that the fluid will leak when the connectors are separated.

Further, in the autoconnector of the present invention, the poppet valve of the other block is controlled by the action of the cylindrical ring formed integrally with the poppet valve provided in one block, and the piston and piston rod that move within this cylinder. Since it opens and closes, fluid can flow from the fluid passage of one block to the fluid passage of the other block, or vice versa, and can accommodate flow in both directions.

Therefore, the autoconnector of the present invention can be widely used for piping of fluid control devices of various machines.

[Brief explanation of drawings]

Fig. 1 is a schematic cross-sectional view of the main parts explaining the principle of a typical conventional auto-connector; Fig. 2-2 is a schematic cross-sectional view showing an embodiment of the auto-connector of the present invention before connection; The figure is a schematic sectional view showing the state of the auto connector after connection. la % lb = -block, 3a, 3b =・
Valve seat, 4a14b...opening, 6a, 6b-...
Inner bore, 'i'a, 7b--Poppet valve, 8a. 8b... Spring, 10... Cylinder, 11... Piston, 12... Return spring, 13... Cylinder chamber, 1
4...Piston rod.

Claims (1)

[Claims] (1) A pair of blocks, a valve seat formed opposite to the connecting surface of each block, an inner hole formed in the block communicating with the opening of the valve seat, and one of the blocks. a first poppet valve slidably fitted into the inner hole; a spring provided in the inner hole to press the first poppet valve toward its valve seat; and a spring in the inner hole of the other block. a second poppet valve slidably fitted into the second poppet valve and a cylinder formed integrally with the second poppet valve; a spring provided in the hole; a piston having a piston rod slidably fitted into the cylinder and extending through the second poppet valve and facing the first poppet valve; a return spring for pushing the piston and piston rod in a direction opposite to the valve seat; and a return spring formed in the cylinder for pushing the piston and piston rod in a direction opposite to the valve seat; An auto connector consisting of a cylinder chamber where pressurized fluid is supplied and discharged toward the valve.