JPS645219Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a leak tester for testing the airtightness of a workpiece.

Conventional leak testers are usually designed and manufactured anew each time according to the shape of the part to be tested, and can be used when testing multiple parts with completely different shapes or when the shape of a part changes midway through. is extremely difficult.

In reality, these problems are dealt with by manufacturing leak testers for only the types of parts needed, or by spending a large amount of money and time modifying the main body of the machine. There are also systems designed with versatility in mind, but in those cases it takes time to set up and set up the workpiece, making them unsuitable for large-volume processing. Therefore, it is very difficult to incorporate conventional leak testers into a general-purpose machine line, and it is either installed separately outside the line to perform only specialized leak tests, or sacrifices space on the line. Currently, the current method is to use the target part only when it is set, and then leave it alone.

An object of the present invention is to provide a leak tester that allows easy setup changes and has versatility.

The feature of this invention is that the leak tester is separated into a jig part and a main body part, and all functions such as workpiece positioning, clamping, and sealing, which are regulated by the workpiece shape within a preset space, are configured in the jig part. The main body is configured to have only common mechanisms such as a jig holding mechanism, a drive source, a setup change mechanism, a jig submersion mechanism, etc., and is equipped with rollers or rails to enable quick setup changes. It has a structure that allows the jig to be carried in and out along the same line, and all drive-related connections between the jig part and the main body part are made with a quick joint or a metal outlet, providing versatility. It is in.

Embodiments of the present invention will be described below based on the drawings.

1 and 2 show the configuration of an embodiment of a leak tester according to the present invention, with FIG. 1 being a front view thereof and FIG. 2 being a side view thereof. In these figures, the leak tester consists of a main body part A and a jig part B. The main body A includes a water tank 1, cylinders 6 and 6' for raising and lowering the water tank 1, and a chain 7.
and a lifting means consisting of a sprocket 10, a support section 2 consisting of a plurality of rollers supporting the jig section B, and a frame 14 supporting these.
Reference numeral 11 denotes a truck for transporting the jig section B to the support section 2 of the main body section A, and the truck 11 is provided with a stopper 12 and a roller 3. Trolley 11
A plan view of the is shown in Fig. 3. Usually, two carts 11 are arranged in parallel to carry the jig section B.

Further, in this embodiment, the cart 11 is carried in by a plurality of rollers 3 provided on the upper surface, but a plurality of rollers are arranged in parallel at the same height as the support section 2 of the main body section A. The formed support portion may be provided on the truck.

On the other hand, the jig part B includes work clamp cylinders 13, 13', frame 15, limit switch dog support rod 16, limit switch dogs 17, 17', work clamp cylinders 13, 13', as shown in FIG. limit switches 18, 19 for detecting the lifting/lowering state of
quick joints 21 and 22 for connecting a conduit for sending air to, a clamp pin support plate 23, clamp pins 24 and 24' attached to the clamp pin support plate 23, and fixed to the lower part of the frame 15. Seal rubber 25, the seal rubber 2
It consists of locking members 28, 28' for positioning a workpiece 26 placed on top of the workpiece 5. In addition, as shown in FIG. 2, the cylinder 13' of the jig part B has
It is connected to a hydraulic power source (not shown) provided in the main body A via a quick joint 9 and a hydraulic connection hose 8.

In the above configuration, the jig part B is carried in from the roller table 11 installed at the rear of the leak tester.
The pin 4 is inserted into the pin hole 27 provided in the jig part B and fixed to the main body part A, and the workpiece 26 is fixed from the front of the leak tester. When set along the locking members 28, 28' of the jig part B, and turning on a start switch (not shown), the clamp cylinders 13, 13' fixed to the jig part B operate, and the clamp cylinders 13, 13' are activated via the clamp pins 24, 24'. The workpiece is fixed and sealed. Generally, there are many holes on the surface of the workpiece 26, and these holes are sealed and fixed with clamp pins in order to conduct a leak test, but in this embodiment, for convenience of explanation, the clamp pins 24, 24' Only the following are shown. Further, an air inlet is provided at the tip of the clamp pin 24', and air is introduced to the outside from the tip of the clamp pin 24'. Furthermore, a cylinder 13 for clamping and sealing the workpiece
The attachment is not limited to the top surface of the jig part B, but can be freely set on the side surface, rear side, etc. depending on the shape of the workpiece. When the cylinders 13 and 13' are activated and lowered to clamp the workpiece 26, the limit switch dog 17' connected to the cylinder 13 presses the limit switch 19, and the clamped state is confirmed. Then, the cylinder 6,
6' is activated, the water tank position is raised, the workpiece 26 is submerged in water, and the workpiece 26 is ready for a leakage test. In this state, air is introduced from the tip of the clamp pin 24', and if there is a leak, air bubbles are generated so that the airtightness of the workpiece can be visually checked.

After completing the leak test, turn on the restart switch (not shown) to lower the water tank 1 and restart the cylinder 1.
3 and 13', the clamp pins 24 and 24' are opened, and the leak tester returns to its original state.

The roller table 11 shown in FIG. 2 has one side and is fixed, but if wheels are attached to the underside of the table so that it can move, it will be easier to place the jig part B on the roller table 11. It can save time.

As explained above, in this invention, the functions of the leak tester are separated into the jig part and the main body part, and all the functions regulated by the workpiece shape are configured in the jig part, and the jig part's holding, drive source, and setup Since the main body is configured to have common functions such as a replacement mechanism and a submersion mechanism for jigs, the present invention enables the setup of the jig to be changed, making it possible to inspect a wide variety of parts with completely different shapes. obtain. Therefore, it is only necessary to manufacture the jig part for inspection of various parts, thereby reducing the investment amount. Furthermore, since there is no need to install a device for each component on the line, the installation space of the line can be saved. Furthermore, the setup of the jig section can be changed in a short time (within 3 minutes), and the operating rate of the device can be improved. Furthermore, it can be incorporated into a general-purpose machine line such as a die-casting machine from the beginning, eliminating the need for leak testing as a separate process as in the past, which has the effect of significantly reducing the amount of manpower and space required for leak testing.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the configuration of the leak tester according to the present invention, Fig. 2 is a side view of Fig. 1, Fig. 3 is a plan view of the roller table 11, and Fig. 4 is a front view showing the structure of the jig section. It is a diagram. 1...Aquarium, 2...Support part, 6, 6', 13,
13'...Cylinder, 7...Chain, 10...
Sprocket, 11...Roller table, 14,
15... Frame, 24, 24'... Clamp pin.

Claims (1)

[Claims for Utility Model Registration] (1) A water tank, a lifting means for raising and lowering the water tank, a frame for supporting these, a suspension means for supporting a jig provided at a predetermined height position within the frame, and each part. A main body consisting of a drive source for driving, a sealing material fixed to a substrate on which the work is placed, a locking member for positioning the work on the substrate, and a locking member fixed to the substrate. a jig portion comprising a clamping means for fixing the workpiece in a predetermined position on the frame, a sealing means for sealing a machined hole provided on the surface of the workpiece, and a means for detecting that the workpiece is fixed by the clamping means; a conveying means provided on the rear surface of the main body and for transporting the jig so as to be supported by a suspension means in the main body; and a means for lifting and lowering the main body based on a detection signal from a detecting means of the jig. A leak tester characterized by being driven. (2) The leak tester according to claim (1), wherein the conveying means is a cart having a plurality of rollers on its upper surface. (3) The utility model according to claim 1, wherein the conveyance means has a support section formed by arranging a plurality of rollers in parallel at the same height as the suspension means. leak tester. (4) The leak tester according to claim 2 or 3, wherein the conveying means is constructed by installing a plurality of carts in parallel. (5) The utility model registered in claim (1) is characterized in that the clamping means and the sealing means are configured to be connectable to a driving source such as a hydraulic power source by a connecting means such as a quick joint. Leak tester listed. (6) The leak tester according to claim (5), wherein the clamping means also serves as an air delivery means. (7) Utility model registration claim No. 1, characterized in that the suspension means is constituted by a plurality of rollers.
Leak tester described in paragraph (1).