JPH0317116Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to an automatic piping attachment/detachment device used in general industrial machinery, etc., and in particular, to securely and well connect male and female fittings, which are the components of the device. , regarding techniques for detachment.

[Conventional technology]

Equipping general industrial machinery with automatic piping attachment/detachment equipment,
Techniques for appropriately supplying and stopping fluid to the industrial machine are known.

As a specific example of this automatic pipe attachment/detachment device, for example, the device disclosed in Japanese Patent Publication No. 51-41934 is as follows:
As shown in FIG. 4, there is a movable frame 51 movable by a drive cylinder 50, a guide member 54 held above and below the movable frame 51 via springs 52, 53, and a torsion spring attached to the guide member 54. A male joint mounting plate 57 that is connected via a mounting shaft 55 and has a plurality of male joints 56...56 attached thereto.
and a plurality of female joints 59...5 held by the fixed frame 58 so as to face the male joint mounting plate 57.
9 is attached to the female joint mounting plate 60. A guide pin 62 having a guide key 61 is protruded from the center of the male joint mounting plate 57, and the guide pin 62 is fitted into and removed from the center of the female joint mounting plate 60. A guiding keyway 63 and a hole 64 are bored.

When using this automatic attachment/detachment device having the above configuration, the guide pin 62 of the male joint mounting plate 57 is attached to the female joint by operating the drive cylinder 50 and moving the movable frame 51 toward the fixed frame 58. The key 61 of the guide pin 62 and the key groove 63 of the hole 64 are inserted into the hole 64 of the plate 60.
and guide the male joint mounting plate 57 so that the plurality of male joints 56...56 and female joints 59...59 are accurately coupled. In this case, the misalignment of the male joint mounting plate 57 and the female joint mounting plate 60 and the deviation of the parallelism of the opposing surfaces of the two may cause the male joint mounting plate 57 to
Spring 52, 53 elastically supporting 7 and derivative 5
The correction and adjustment are performed by appropriately bending a torsion spring provided on the mounting shaft 55 of No. 4.

[Problem that the invention attempts to solve]

According to the device disclosed in the above-mentioned publication, the male joint mounting plate 57 must be held in a floating state using a complicated configuration regardless of the number of pipes to be connected or removed. would make the device unnecessarily complex.

[Means for solving problems]

In view of the above-mentioned circumstances, this invention aims to provide an automatic attachment/detachment device with a new structure that is useful when attaching/disconnecting a small number of piping, and can connect and detach male and female joints with a simple structure. This was done as a problem, and the means for achieving this goal are: a fixed pedestal that is fixedly installed; a movable pedestal that is disposed opposite to the fixed pedestal and is movable;
A male joint is attached to either one of the frames and has a built-in on-off valve, and a male joint is attached to the other of the two frames, facing the male joint and abutting the on-off valve of the male joint. In an automatic piping attachment/detachment device comprising a female joint with a built-in on-off valve, the inside of one or both of the male joint and the female joint is biased toward the tip by a first spring. The valve case is slidably fitted and held, and the on-off valve, which is biased toward the tip by a second spring having a smaller spring force than the first spring, is slidably fitted into the valve case. It is located where it was held together.

[Effect]

According to the above technical means, when the movable frame is moved toward the fixed frame, the connection between the two starts when the tip of the male joint enters the tip of the female joint, and The built-in on-off valves move backward by pushing against each other, and the coupling of both joints is completed when both on-off valves move back by a predetermined distance and are in the open state. In this case, in a joint in which a valve case is slidably fitted and held, the opening/closing valve first becomes open when it retreats by a predetermined distance against the biasing force of the second spring; When the movable frame further moves in the same direction as described above, the on-off valve moves backward together with the valve case against the biasing force of the first spring. Since it works in this way, the mechanism becomes simpler as the number of connected pipes decreases.

〔Example〕

Embodiments of this invention will be described below with reference to FIGS. 1 to 3.

The automatic pipe attachment/detachment device 1 according to this invention includes a movable pedestal 2 that is movable by an actuator (hydraulic cylinder, etc.) not shown, and a movable pedestal 2 that is disposed opposite to the movable pedestal 2 and fixed to the machine side. fixed frame 3
and has.

A male joint 4 having a connecting portion 4a at the tip and a piping port 4b at the rear end is fixed to the movable frame 2, and an on-off valve 5 slides into the inner hole 4c of the male joint 4. It is freely fitted and held.
This on-off valve 5 has a protruding end 5a formed at its tip.
and a through hole 5b formed in the peripheral wall, and in the illustrated state, it is urged toward the tip by a spring 6 and is seated on a valve seat 4d formed in the inner hole 4c. Then, as the projecting end portion 5a is pushed rearward, the on-off valve 5 moves backward against the biasing force of the spring 6, and as a result, the on-off valve 5 is separated from the valve seat 4d. When seated, fluid flows from the front of the inner hole 4c to one of the pipes via the through hole 5b and the pipe port 4b.

On the other hand, the fixed pedestal 3 elastically supports a female joint 7 which has a guide tube 7a at its tip for guiding the connecting portion 4a of the male joint 4 and a piping port 7b at its rear end. A valve case 8 is slidably fitted and held in the inner hole 7c of the joint 7. This valve case 8 includes a small diameter portion 8a at the tip to which an O-ring is attached, and a large diameter portion 8 at the rear end having a slightly larger diameter.
In the illustrated state, the stepped portion between the two is pressed against the stepped surface 7d of the inner hole 7c by the biasing force of the first spring 9. Furthermore, an on-off valve 10 having a protruding end portion 10a and a through hole 10b is slidably fitted and held inside the valve case 8, and the on-off valve 10 is held in place by the first spring 9. The second spring 11, which has a small spring constant, is biased toward the tip, and in the illustrated state, it is seated on a valve seat 8c formed inside the valve case 8.

In addition, on the outer periphery of the guide tube 7a of the female joint 7,
Six springs 12...12 are arranged radially at equal angular intervals, thereby elastically supporting the tip of the female joint 7 in the radial direction, and integrally attached to the rear end of the guide tube 7a. A cushion material 13 is interposed between the formed flange 7e and the wall surface of the fixed pedestal 3, and the female joint 7 is elastically supported in the axial direction, and the rear end of the female joint 7 is also connected to the plate. It is elastically supported in the vertical direction by a spring 14.

This piping automatic attachment/detachment device 1 consisting of the above configuration
According to the above, by operating an actuator (not shown) to move the movable frame 2 toward the fixed frame 3, the connecting portion 4a of the male joint 4 is guided by the guide tube 7a of the female joint 7, and the inner hole thereof is moved. Enter 7c. As a result, both protruding ends 5a, 10 of the on-off valves 5, 10 built in the male and female joints 4, 7, respectively.
a contact each other and push each other, and as shown in FIG. 2, both on-off valves 5 and 10 are separated from their corresponding valve seats 4d and 8c to be in the open state, and at this point, both joints 4 and 7 are connected. Complete. In this case, the on-off valve 10 of the female joint 7 is in a state where it has retreated by a predetermined dimension against the biasing force of the second spring 11, but from this state, the movable pedestal 2 is further moved in the same direction as above. When it moves, the on-off valve 10 of the female joint 7 and the valve case 8 move backward together against the biasing force of the first spring 9, as shown in FIG.

Note that the guide tube 7a of the female joint 7 has six springs 12...
12, and the female joint 7 is supported so as to be movable in the radial direction via the collar 7e, and the rear end of the female joint 7 is supported vertically by a leaf spring 14. Since the male and female joints 4 and 7 are elastically supported, even if there is a misalignment between the axes of the male and female joints 4 and 7, this misalignment will be suitably corrected when the two joints 4 and 7 are connected.

Further, in the above embodiment, the valve case 8 in which the on-off valve 10 is built is fitted and held in the female joint 7, but a similar structure may be applied to the male joint 4, and furthermore, It goes without saying that the present invention may also be applied to both female joints 4 and 7.

[Effect of idea]

As described above, according to the automatic piping attachment/detachment device of this invention, the valve case is slidably fitted and held inside one or both of the male joint and the female joint, and the valve case is Since the on-off valve is fitted and held in a slidable manner, even after the on-off valve moves back by a predetermined distance to reach the open state and the connection of both joints is completed, the valve case can further move backward together with the on-off valve. This simplifies the mechanism for absorbing errors in the piping connections when the male and female joints are connected.

Further, the above configuration is particularly useful when the number of pipes to be connected and disconnected is small, and in such cases, it is possible to perform the operation of connecting and disconnecting the pipes reliably and efficiently without using a complicated configuration. It has the advantage of being economical.

[Brief explanation of the drawing]

1 to 3 show an embodiment of this invention. FIG. 1 is a cutaway side view of main parts showing the overall configuration of the automatic piping attachment/detachment device according to this invention, and FIGS. 2 and 3 are FIG. 6 is an enlarged side view with a broken main part showing the operation of this embodiment. Moreover, FIG. 4 is a perspective view showing a conventional example. 1...Automatic attachment/detachment device, 2...Moving frame, 3...
Fixed frame, 4...Male joint, 5, 10...Open/close valve,
7... Female joint, 8... Valve case, 9... First spring, 11... Second spring.

Claims (1)

[Scope of utility model registration request] A fixed pedestal that is fixedly installed, a movable pedestal that is arranged opposite to the fixed pedestal and is movable, and a male joint that is attached to either one of the two pedestals and has a built-in opening/closing valve; and a female joint that is attached to the other of the frames, faces the male joint, and has a built-in on-off valve that comes into contact with the on-off valve of the male joint, wherein the male joint or a valve case biased toward the tip by a first spring is slidably fitted and held inside one or both of the female joints; An automatic piping attachment/detachment device characterized in that a second spring having a smaller spring force than the spring slidably engages and holds an on-off valve biased toward the tip.