JP2584810B2 - Leak test seal device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an apparatus for sealing a sealing surface of each of works of different sizes subjected to a leak test.

(Prior Art) Conventionally, when performing a leak test on a work, the work is carried into a sealing device, and the work sealing surface is sealed with a sealing plate provided in the sealing device.

(Problems to be Solved by the Invention) By the way, for example, when simultaneously sealing the bottom surface and the side surface of the work, the end of the work side seal plate is brought into contact with the end surface of the work bottom surface seal plate from the viewpoint of ensuring the sealing performance. This has been generally done conventionally. Therefore, when a leak test is performed on a workpiece having a different size after a leak test on a workpiece having the same standard (same size) is completed, the sealing plate must be replaced according to the size of the workpiece, and this replacement work takes time. there were. Furthermore, since the leak test for the work is interrupted during the sealing plate replacement work, there is a problem that the work efficiency is reduced accordingly.

The present invention has been made in view of such a point, and an object of the present invention is to improve the structure of a seal plate that seals a seal surface of a work so that the seal area of the seal plate can be changed according to the size of the work. It is possible to reliably seal the sealing surfaces of works of different sizes without deteriorating the sealing performance, so that there is no need to prepare a seal plate for each of the works of different sizes, and therefore a leak test of works of the same size Another object of the present invention is to eliminate a troublesome work of replacing a seal plate when a leak test is performed on a work having a different size after the completion of the test. Moreover,
An object of the present invention is to eliminate the interruption of the leak test accompanying the seal plate replacement operation and to improve the operation efficiency by that much.

(Means for Solving the Problems) In order to achieve the above object, a solution of the present invention is to provide a first work having a small size and a second work having a large size mounted on a sealing device main body to be subjected to a leak test. In this case, a sealing plate for sealing the mounting surface side sealing surface of the first work is attached to the mounting surface side sealing surface of the first work. Correspondingly, it is provided on the sealing device body. further,
In the joined state, a sub-seal member for sealing the sealing surface on the mounting surface side of the second work together with the seal plate is provided so as to be able to be joined and separated from the end face of the seal plate. In addition, moving means is provided for separating the sub-seal member from the end face of the seal plate in the leak test of the first work, and joining the sub seal member to the end face of the seal plate in the leak test of the second work. In addition, during the leak test of the first work, the first work is brought into contact with the side surface of the first work and the end face of the seal plate to seal the side surface sealing surface of the first work, while the second work is sealed. At the time of a leak test, a side seal plate is provided which is brought into contact with the side surface of the second work and the end surface of the sub-sealing member and seals the side seal surface of the second work.

(Operation) With the above configuration, according to the present invention, the first type having different sizes is used.
When performing a leak test on a first work having a small size among the second works, the first work is separated from the end face of the seal plate by the separating operation of the moving means. Thus, the mounting surface side sealing surface is sealed, and then the side surface sealing plate is brought into contact with the side surface of the first work and the end surface of the sealing plate to seal the side surface sealing surface. On the other hand, when performing a leak test of a second work having a large size, the second work is mounted by the seal plate and the sub-seal member after the sub-seal member is joined to the end face of the seal plate by the joining operation of the moving means. The mounting surface side sealing surface is sealed, and then the side surface sealing plate is brought into contact with the side surface of the second work and the end surface of the sub-sealing member, whereby the side surface sealing surface is sealed.

As described above, the sub-seal member is joined to and separated from the end face of the seal plate according to the size of the work, so that in the first work having a small size, the mounting surface side seal surface is sealed by the seal plate. On the other hand, in the second work having a large size, the mounting surface side seal surface is sealed by both the seal plate and the sub-seal member. From this, the sealing surfaces of works of different sizes are reliably sealed by a set of seal plate and sub-seal member without deteriorating the sealing performance, thereby eliminating the need to prepare a seal plate for works of different sizes. Therefore, a troublesome work of replacing the seal plate when performing a leak test on a work having a different size after a leak test on a work having the same size is completed is eliminated.
Further, the interruption of the leak test accompanying the seal plate replacement operation is eliminated, and the work efficiency is improved accordingly.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIGS. 1 to 4 show a leak test sealing device 1 according to an embodiment of the present invention. In this embodiment, a work W to be subjected to a leak test is a cylinder block having a different size of a vehicle engine such as an automobile. Yes, mainly for performing a leak test on the joint surface with the oil pan side.

1 to 3, reference numeral 2 denotes a water tank provided on the bed 3, and 4 denotes a sealing device main body provided on the bed 3 in the water tank 2. A pair of support members 5, 5 extending in the direction (the direction indicated by the arrows in FIGS. 1 and 2) are provided, and the upper end of both support members 5, 5 is provided with a first work W having a small size. A seal plate 6 that seals a seal surface on the mounting surface side (joining surface side with the oil pan side) is movably supported in the work transfer direction so as to correspond to the mounting surface side seal surface of the first work W. . In addition, on both outer sides of the supporting members 5, 5 of the sealing device body 4,
.. Are arranged, and each of the work receiving members 7 is provided with a cylindrical member 8 extending in the vertical direction. The cylindrical member 8 has a bulged work receiving portion 9a at the upper end. Is inserted so as to be vertically movable. A coil spring 10 is contracted between the work receiving portion 9a of the rod 9 and the cylindrical member 8, and the coil spring 10 seals the work receiving portion 9a in a state where the work W is not placed. The rod 9 is constantly biased and supported upward so as to be positioned above the upper surface of the plate 6. Therefore, when each of the work receiving members 7 places the first work W having a small size and the second work W having a large size on the seal plate 6, each work W comes into contact with the seal plate 6. First, the workpiece is received and supported by the work receiving portion 9a.
By lowering the work 9a by its own weight against the spring force of the coil spring 10, each work W is placed on the seal plate 6 in a state where the impact is reduced.

Two upper and lower guide rods 11, 11 extending in the work transfer direction are slidably fitted in and supported by the seal device body 4 in the axial direction thereof. On the left side in FIG. 1, the upper end of the seal plate 6 is attached so that a sub-seal member 13 having an L-shaped vertical section can be joined to and separated from an end surface of the seal plate 6 by expansion and contraction of a first hydraulic cylinder 15 described later. And is mounted on the same plane via the connecting plate 12. Further, the connecting plate 12 is connected to a tip end of a piston rod 15a extending in the work transfer direction of a first hydraulic cylinder 15 as a moving means provided on the sealing device main body 4 side, and the first hydraulic cylinder 15 is The sub-seal member 13 is separated from the end face of the seal plate 6 as shown by the solid line in FIG. 1 by performing the extension operation during the leak test of the first work W, and in this separated state, the end face of the seal plate 6 and the sub-seal member 13 are separated from each other. U-shaped groove composed of
While the lower end of the side seal plate 22 described later is fitted into the inside of the seal plate 14, the sub-sealing member 13 is contracted during the leak test of the second work W, thereby causing the end face of the seal plate 6 as shown by an imaginary line in FIG. In this joined state, the sealing surface of the second work W is sealed together with the seal plate 6.

Further, the other end side (right end side in FIG. 1) of each of the guide rods 11 is movably fitted and supported by a hanging part 6a extending downward from the lower right end of the seal plate 6 near the lower end thereof. In addition, a flange portion 11a that can be engaged with the hanging portion 6a of the seal plate 6 is provided. Also, the two guide rods of the hanging part 6a
A rod 16 extending in parallel with both guide rods 11, 11 is disposed between 11, 11 with both ends thereof protruding. Each of the guide rods 11 fixed to the connecting plate 12 is moved in the work transfer direction (the left side in FIG. 1) by the extension operation of the first fluid pressure cylinder 15, so that the flange portion 11a is moved to the sealing plate 6. The seal plate 6 is moved in the work transfer direction by engaging with the hanging portion 6a of the first cylinder. At this time, one end (the left end in FIG. 1) of the rod 16 is connected to the first hydraulic cylinder 15 as shown by the solid line in FIG. Stopper 17 provided on the rear surface of
, The subsequent movement is regulated and the sealing plate 6 is made to correspond to the sealing surface of the first work W. On the other hand, the sub-seal member 13 is moved in the opposite work transport direction (the right side in FIG. 1) via the connecting plate 12 by the contraction operation of the first hydraulic cylinder 15, so that the seal plate 6 is pressed and The rod 16 is moved in the workpiece transfer direction. At this time, the other end of the rod 16 (first
(Right end in the figure) is a stopper provided on the sealing device body 4 side
By contacting the sub-seal member 18, the sub-seal member 13 and the sub-seal member 13 correspond to the sealing surface of the second work W.

On the other hand, on each of the work loading and unloading sides of the sealing device main body 4, support plates 19, 19 (one each appears).
Are supported by upper and lower two guide rails 21 so as to be able to contact and separate in a direction perpendicular to the work transfer direction, and the upper half of each support plate 19 has first and second works W and W respectively. The side seal plate 22 for sealing the side seal surface of the workpiece W is mounted so as to be pressed against the side seal surface of each work W by the extension operation of the pressing cylinders 23 provided on the back side of each support plate 19. . Further, each of the support plates 19 is connected to a second hydraulic cylinder 24 provided on the fixed side of the lower end side, and the second hydraulic cylinder 24 extends toward the sealing device main body 4 by the extension operation of the second hydraulic cylinder 24. The side seal plate 22 is adapted to correspond to each side seal surface of the first and second works W, W. Specifically, each of the side seal plates 22 is brought into contact with the side surface of the first work W and the end surface of the seal plate 6 during a leak test of the first work W, and the side surface of the first work W While sealing the sealing surface, it is brought into contact with the side surface of the second work W and the end surface of the sub-sealing member 13 in the leak test of the second work W to seal the side surface sealing surface of the second work W. It has been made like that.

In addition, above the sealing device 1, an upper surface sealing plate for sealing the upper surface side sealing surface of the work is supported by an elevating device so as to be able to move up and down (both not shown).

Next, the operation of the sealing device 1 according to the above embodiment will be described.

First, a case where the leak test of the first work W is performed will be described. After the first work W is carried into the water tank 2 and supported by the work receiving members 7, 7,. As shown in FIG.
The extension operation 15 moves the seal plate 6 away from the end face in the work transfer direction. At this time, one end (left end in FIG. 1) of the rod 16 of the hanging portion 6a of the seal plate 6 is brought into contact with a stopper 17 on the rear surface of the first hydraulic cylinder 15 to move the seal plate 6. By restricting, the sealing plate 6 is made to correspond to the sealing surface of the first work W.

Next, by lowering the upper seal plate by the lowering operation of the lifting device and pressing the first work W,
The upper sealing surface is sealed and the lower sealing surface is pressed against the sealing plate 6 to seal.

Thereafter, the two side sealing plates 22 are brought closer to the sealing device body 4 by the extension operation of the second fluid pressure cylinders 24, and the U-shaped grooves 14 formed by the end surfaces of the sealing plates 6 and the sub-seal members 13 are formed. The lower end of one side seal plate 22 (the left side in FIG. 1) is fitted therein so as to correspond to both side seal surfaces of the first work W.

Thereafter, the respective support plates 19 are pressed against both side sealing surfaces of the first work W by the extension operation of the two pressing cylinders 23, 23, thereby sealing the both sealing surfaces.
After the sealing of the first work W is completed, water is poured into the water tank 2 and a predetermined leak test is performed.

On the other hand, when a leak test of the second work W is performed, the second work W is carried into the water tank 2 and supported by the work receiving members 7, 7,. As shown by the imaginary line in FIG. 1, the sub-seal member 13 is moved in the anti-work conveying direction by the contraction operation of the first hydraulic cylinder 15, and is joined to the end face of the seal plate 6. At this time, the seal plate 6 is pushed in the direction opposite to the workpiece transfer direction by the sub-seal member 13, and this movement causes the lower portion of the seal plate 6 to hang.
The other end (the right end in FIG. 1) of the rod 16a is brought into contact with a stopper 18 on the sealing device body 4 side, thereby restricting the subsequent movement of the sealing plate 6 and restricting the sealing plate 6 and the sub-sealing member 13. Correspond to the sealing surface of the second work W.

Next, by lowering the upper seal plate by the lowering operation of the lifting device and pressing the second work W,
The upper sealing surface is sealed, and the lower sealing surface is pressed against the sealing plate 6 and the sub-seal member 13 for sealing.

Thereafter, the two side seal plates 22, 22 are brought closer to the sealing device body 4 side by the extension operation of the second fluid pressure cylinders 24 and brought into contact with the end surfaces of the sub-seal members 13,
The second work W is made to correspond to both side seal surfaces.

Thereafter, the support plates 19 are pressed against both side sealing surfaces of the second work W by the extension operation of the two pressing cylinders 23, 23, and the both side sealing surfaces are sealed.
After the sealing of the second work W is completed, water is poured into the water tank 2 and a predetermined leak test is performed.

Thus, in the present embodiment, the sub-seal member 13 is
By joining and separating the end faces of the seal plate 6 according to the sizes of the second works W, W, the first work W having a small size can be sealed by the seal plate 6 with the mounting surface side seal. While the surface can be sealed, the sealing plate 6 and the sub-sealing member
13 can seal the mounting surface side sealing surface.
From this, one set of the sealing plate 6 and the sub-seal member
In step 13, the sealing surfaces of works of different sizes can be reliably sealed without deteriorating the sealing performance, thereby eliminating the need to prepare a seal plate for each of the works of different sizes. It is possible to eliminate the troublesome work of replacing the seal plate when performing a leak test on works of different sizes after the end.
Furthermore, the interruption of the leak test due to the seal plate replacement work is eliminated, and the work efficiency can be improved accordingly.

(Effects of the Invention) As described above, according to the present invention, a sub-seal member is provided so as to be able to be joined and separated from an end surface of a seal plate for sealing a mounting surface side sealing surface of a small-sized first work, The sub-seal member is separated from the end face of the seal plate in the leak test of the first work, and is joined to the end face of the seal plate in the leak test of a second work having a large size. Further, the side seal plate is brought into contact with the side surface of the first work and the end surface of the seal plate during the leak test of the first work to seal the side seal surface of the first work while the second work is sealed. In the seal test, the side surface of the second work and the end surface of the sub-sealing member were brought into contact to seal the side surface of the second work. Therefore, it is possible to reliably seal the sealing surfaces of works having different sizes with one set of the sealing plate and the sub-sealing member without deteriorating the sealing performance, and it is possible to eliminate troublesome work of replacing the sealing plate. Further, there is no need to interrupt the leak test due to the replacement of the seal plate, and the work efficiency can be improved accordingly.

[Brief description of the drawings]

1 is a longitudinal sectional front view of a seal device for leak test according to an embodiment of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a side view thereof, and FIG. 4 is a view of a seal plate, a sub-seal member and a side seal plate. It is a perspective view which shows the relationship of three. DESCRIPTION OF SYMBOLS 1 ... Seal device, 4 ... Seal device main body, 6 ... Seal plate, 13 ... Sub-seal member, 15 ... First fluid pressure cylinder, 22 ... Side seal plate, W ... Work.

Claims (1)

(57) [Claims] An apparatus for sealing a sealing surface of each of a small-sized first work and a large-sized second work to be mounted on a sealing device main body to be subjected to a leak test, wherein the seal is provided. A seal plate provided on the apparatus main body so as to correspond to the mounting surface side sealing surface of the first work, for sealing the mounting surface side sealing surface of the first work, and joining / separating from the end surface of the sealing plate Provided as possible,
A sub-sealing member for sealing the mounting surface side sealing surface of the second work together with the sealing plate in the joined state, and separating the sub-sealing member from the end surface of the sealing plate during a leak test of the first work; Moving means to be joined to the end face of the seal plate in the leak test of the work,
In the leak test of the first work, the first work is brought into contact with the side surface of the first work and the end face of the seal plate,
While sealing the side sealing surface of the work
In the leak test of the work (2), the side face of the second work and the end face of the sub-seal member are brought into contact with each other.
And a side sealing plate for sealing a side sealing surface of the work.