JPH0419490Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention is a method of sealing a high-pressure fluid into a hollow part formed in an object to be measured (hereinafter referred to as a workpiece) to check for leaks, etc. A leak test related to the masking unit indexing device of a leak test device that tests for leaks, especially in hollow parts such as cooling water jackets and lubricating oil flow paths formed in cylinder blocks and cylinder heads of internal combustion engines. The present invention relates to a masking unit indexing device suitable for the device.

[Conventional technology]

Such a leak testing device seals a high-pressure fluid such as air into a hollow part of a workpiece, and tests whether there is a leakage defect in the hollow part based on the pressure increase of the sealed high-pressure fluid. In order to seal the high-pressure fluid into the hollow part, it is necessary to close the open end of the hollow part opened to the surface of the workpiece.

In the case of conventional leak testing equipment, a masking member formed to correspond to the opening of the hollow part of the workpiece is placed in the inspection chamber where high-pressure air is injected into the hollow part of the workpiece and the change in air pressure is measured. The inspection chamber is arranged so as to surround the workpiece, and after the workpiece is carried in and placed at a predetermined position in the inspection chamber, a masking member is pressed against the hollow opening in the workpiece to close it. In other words, the leak testing device is a dedicated machine that has a masking member that is compatible with one type of workpiece integrated into the main body.

[Problem that the invention attempts to solve]

According to the specialized leak testing equipment described above, when testing the same type of workpieces, that is, workpieces with the same shape and dimensions, work efficiency can be improved and productivity can be increased. .

However, when testing multiple types of workpieces with different shapes and dimensions, dedicated machines must be provided for each type of workpiece. Therefore, when a large number of different types of workpieces are tested for leakage, there is a problem in that the utilization rate of the equipment is low and the installation space is large, resulting in high equipment costs.

In addition, if the masking members installed in the inspection room are replaced each time the type of workpiece is changed, it will take time to reassemble the masking member to match the type of workpiece. When doing so, the reassembly work must be done frequently, and the time taken up by the reassembly work increases, reducing productivity.
There was a problem with poor workability.

Therefore, there is a need for a leakage testing device that can automate the task of reassembling masking members and improve workability and productivity when testing workpieces. In order to automate the reassembly work of masking members, it is necessary to have the masking members that correspond to the workpieces assembled.
Making masking members into units according to the type of workpiece, automatically selecting and taking out the masking unit that corresponds to the workpiece to be tested on the leakage tester, and automatically assembling it on the leakage tester. This is what is being requested.

SUMMARY OF THE INVENTION An object of the present invention is to provide a masking unit indexing device for a leak testing device that can automatically index and take out a masking unit corresponding to the type of workpiece.

[Means for solving problems]

In order to achieve the above object, the present invention is provided movably along the outlet of a masking unit storage device in which a plurality of masking units corresponding to each type of workpiece are stored at predetermined positions, and A trolley is movably installed at the masking unit loading entrance of the main body of the test equipment, a carriage is attached to a guide rail that stands upright on the trolley, and the carriage is movably mounted on a guide rail that extends horizontally. The masking unit has a retractable pin which is provided so as to be movable in the direction of the outlet along a guide rail located in the masking unit and can be engaged with a hole formed in the masking unit, and the pin is inserted into the hole. a masking unit take-out fitting that engages with the masking unit take-out fitting to take the masking unit in and out; The present invention is characterized by comprising a conveyance table including a take-out roller for conveying the masking unit to be taken in and taken out.

[Effect]

With this structure, based on the given work identification signal, the cart and the carriage are driven to move the carriage to the corresponding masking unit take-out port, and then the masking unit take-out fitting is moved into the masking unit storage device. The masking unit is moved forward to a predetermined position, the pin is projected and engaged with the hole in the masking unit, and the masking unit take-out fitting is then retreated to take out the masking unit onto the conveyance table via the take-out roller, and the masking unit is taken out onto the conveyor table again. By driving the carriage and moving the carriage to the masking unit inlet of the leak testing equipment main body, the masking unit corresponding to the workpiece sampled in the leak testing equipment main body can be automatically indexed. It can be done.

〔Example〕

The present invention will be explained below based on examples.

Fig. 1 and Fig. 2 show a front view and a side view of an embodiment of the present invention, respectively, and Figs. 3 to 5 show a plan view, a front view, and a side view of the entire leak test device, respectively. .

As shown in these figures, the leak test device can be roughly divided into a leak test device main body 100, a masking unit 200, a masking unit storage device 300 in which this masking unit is stored, a masking unit indexing device 350, and a workpiece identification device. Device 4
00.

The masking unit indexing device 350
As shown in FIGS. 2 and 3, a pair of rails 352 are provided on the base 351 in the AA′ direction.
, a cart 354 which is freely placed on this rail 352 via wheels 353, and this cart 35.
A pair of guide rails 355 that are vertically attached to the
a carriage 357 that is slidably attached in the vertical direction BB' via a guide holder 356 that is slidably fitted to the carriage 357;
The truck 354 is moved in the AA' direction via a bracket 359 by a piston rod 358a of a piston cylinder 358 fixed to a base 351.
Further, it is adapted to be stopped at a desired position by a control device (not shown). Carriage 3
57 is moved up and down in the BB' direction via the bracket 362 by expanding and contracting the piston rod 361a of the piston cylinder 361 fixed to the truck 354, and is stopped at a desired position by a control device (not shown). It is becoming more and more like this.
CC' direction (horizontal direction) on the top of the carriage 357
A guide rail 363 is attached to extend from the masking unit to the masking unit, and a masking unit extraction fitting 364 is slidably fitted onto the guide rail 363. This masking unit extraction fitting 364
A pair of piston cylinders 365 are attached at a constant interval in the extending direction of the lower surface of the piston cylinder 365, and pins 367 are attached to the piston rods of the piston cylinders 365 via brackets 366, respectively. In addition, a pair of pins 36
The interval 7 and the outer diameter of the pin are arranged such that the pin can be inserted into a hole 263 provided in a masking unit 200 shown in FIG. 6, which will be described later. The masking unit extraction fitting 364 is attached to a bracket 368.
It is connected to a piston rod 369a of a piston cylinder 369 fixed to the truck 354 via a piston rod 369, and is moved forward and backward in the CC' direction by expanding and contracting the piston rod 369a.
Further, a bracket 370 is provided at the lower end of the carriage 357 and extends in the A' direction.
A plurality of conveying rollers 371 are arranged on the upper surface of this bracket 370. This conveyance roller 371
is adapted to be driven by a drive motor 372 via a chain. Also, bracket 3
A pair of take-out rollers 373 having a plurality of driven rollers are provided extending from 70 in the C' direction.

Next, other related devices of the leak testing apparatus to which the masking unit indexing device 350 configured as described above is applied will be described.

As shown in FIGS. 3 to 5, the leak test device main body 100 has four pillars 102 erected on a base 101, and a top plate 103 is placed on these pillars 102 to form a pedestal. ing. A support bracket 104 having a size that covers almost the entire inside of the pedestal thus formed is suspended from the lower surface of the top plate 103. The support bracket 104 is formed to include an upper bracket 104a and a lower bracket 104b which are vertically opposed and arranged horizontally.The upper bracket 104a is fixed to the top plate 103, and the lower bracket 104b is suspended from the upper bracket 104a. It is supported by a vertical bracket 104c. And the upper bracket 104a
The space surrounded by the lower bracket 104b and the lower bracket 104b is an inspection room 170. Upper bracket 1
A bracket 105 is arranged on the lower surface of the upper bracket 104a.
The bracket 105 is supported by a piston rod 106a of a piston cylinder 106 fixed to the bracket 105, thereby allowing the bracket 105 to move up and down in the direction BB' in the drawing. Bottom view of this bracket 105
Guide rails 107 and 108 are attached to both ends in the CC' direction so as to extend in the CC' direction, and guide holders 109 and 110 are attached to the guide rails 107 and 108, respectively, so as to slide in the CC' direction. freely engaged. Brackets 111 and 112 are suspended from the ends of the guide holders 109 and 110, respectively, and pads 113 and 114 are attached to the ends of the brackets 111 and 112, respectively, facing the inside of the inspection chamber 170. It is being Also, brackets 111 and 11
2 are piston cylinders 116 each fixed to the bracket 105 via the bracket 115.
The piston rods 116a and 117a are connected to the piston rods 116a and 117.
By expanding and contracting 7a, the pads 113 and 114 are movable in the C and C' directions, respectively. Further, a piston cylinder 121 is attached to the lower end of a bracket 120 suspended from the center of the bracket 105, and a stopper 122 is attached to the tip of the piston rod 121a. And piston rod 1
By expanding and contracting 21a, the pad 122
is formed to be movable in the AA′ direction. Also,
Bracket 1 attached to bracket 105
A pair of swing cylinders 124 are fixed to the piston rods 23, and clasps 125 are respectively attached to the piston rods. These clasps 125
are arranged so as to sandwich the support plate 202 of the masking unit.

On the other hand, piston cylinders 130 and 131 are fixed to the upper surface of the lower bracket 104b via brackets 132 and 133, respectively.
Brackets 134 and 135 are attached, respectively. These brackets 134 and 135 include
pads 136 and 137 and clamper 1, respectively.
38 and 139 are installed, clamper 138 is in communication with a test fluid supply, not shown, and clamper 139 is adapted to receive a pressure gauge. Then, they are moved in the AA' direction by extending and contracting the piston rod, and when the piston rod is extended, the clamper 138 and 1
39 are masking units 20, which will be described later.
The test fluid is communicated with the openings 255 of the manifolds 253 and 254 of No. 0, thereby making it possible to pressurize the test fluid into the workpiece W and to confirm that the pressure fluid is reliably supplied to the hollow part of the workpiece W. There is.

Further, on the upper surface of the lower bracket 104b, a plurality of conveyance rollers 140 are arranged in the AA' direction, and these conveyance rollers 140 are driven by a drive motor 141 via a chain. A piston cylinder 142 is slidably attached to the lower bracket 104b at the center of the 140 rows of conveyance rollers, and the piston rod tip of the piston cylinder 142 is attached to a fastener 143 rotatably attached to the upper surface of the lower bracket 104b. By expanding and contracting the piston rod of the piston cylinder 142, the fastener 143 is rotated, and the conveying roller 140
It is shaped so that you can sit up and down.

On the other hand, as shown in the plan view of FIG. 6 and the side view of FIG. It is formed by being divided into a lid body portion that includes.

A hollow guide column 20 is provided on the upper surface of the base 201.
3 is appropriately erected, and a guide rod 204 that fits into the guide column 203 is suspended from the lower surface of the upper support plate 202 opposite thereto. Further, a stopper 205 is movably fitted to the guide rod 204, and the guide column 203 and the guide rod 205 are movably fitted.
The fitting length with 04 can be adjusted.

A spring holder 20 is mounted on the top surface of the base 201.
Guide rails 208 and 209 are provided in parallel to guide the workpiece W via a spring 207 held by the workpiece W. This guide rail 208,
209 are connected by connecting members 210 and 211, and a guide rail 213 is supported by the guide rail 209 via a bracket 212. These guide rails are arranged according to the dimensions and shape of the work W corresponding to the masking unit 200, and the work W is placed on the guide rails 208, 209 and transported by sliding. It's summery. Further, the lateral position of the workpiece W is regulated by guide rails 209 and 213. The guide rails 208, 209, 213 have stoppers 214,
215 restricts movement in the illustrated directions AA' and CC', and is supported by the base 201 so as to be movable within a certain range only in the direction BB'.

A support plate 221 is suspended between the two guide columns 203, and a support plate 222 is attached to the support plate 221 so as to be slidable in the AA′ direction and always elastically biased in the A direction. This support plate 22
Masking bodies 223 and 230, which are extendable and extendable in the direction of the workpiece W, are attached to the masking member 2 so as to correspond to the openings on the sides of the workpiece W. The masking body 223 includes a masking shaft 224 supported slidably in the AA′ direction, a masking rubber 225 bonded to the tip of the masking shaft 224, and a spring 226 elastically biasing these in the A′ direction. has been done. Further, the masking body 223 is provided with a flow path 227 through which air as a test fluid flows. On the other hand, the masking body 230 has a guide rod 231 fixed to the support plate 222 in an upright manner.
The masking rubber 232 is slidable in the axial direction and resiliently biased in the A' direction.

A support plate 250 is fixed to the upper surface of the base 201 corresponding to the lower surface of the workpiece W.
50 is provided with masking bodies 251 and 252 that are elastically biased in the direction of the workpiece W and stand up in correspondence with the opening on the lower surface of the workpiece W.
Since these masking bodies 251 and 252 have the same configuration as the masking body 230, a description thereof will be omitted.

Furthermore, manifolds 253 and 254 for taking in the test fluid are attached to one side edge of the base 201, and an opening 254 into which the high-pressure fluid flows.
is the inspection chamber 1 of the leak test device main body 100 described above.
Test fluid supply means (clamper 1
38, 139), and the secondary sides of the manifolds 253, 254 are connected to the flow path 227 of the masking body 223 by hoses (not shown), respectively.

On the other hand, a presser bar 26 is provided on the lower surface of the upper support plate 202.
0 is provided to hang down appropriately, and its tip is formed in a length that can come into contact with the upper surface of the identification plate W' attached to the upper surface of the workpiece W, and the direction B' is applied to the upper support plate 202 during the test. The force of presser bar 26
The workpiece W can be pushed down through the 0. In addition, a masking body 261 hangs down from the lower surface of the upper support plate 202 and the workpiece W
It is elastically biased and provided so as to be elastically elastic in the direction. This masking body 261 has the same configuration as the masking body 230.

As mentioned above, the masking unit 200
After positioning the work W by the guide rails 208, 209, 213, each support plate 202,
By pressing 222 and 250 in the B', B, and A' directions, the masking rubber bonded to the tip of each masking body can be pressed against the open ends, thereby closing those open ends. It is formed like this. Furthermore, when each masking body is pressed against the workpiece W to close the open end, the hollow part of the workpiece W is communicated with the test fluid supply source via the flow path 227 of the masking body 223, the hose, and the manifolds 253, 254. It is becoming more and more like this.

Furthermore, the masking unit 200 of this embodiment
is divided into two parts: a base part including the base 201 and a lid part including the upper support plate 202, and when not performing a leakage test, the guide rod 2
By fitting and inserting the 04 into the guide column 203, it is possible to reduce the external height and store it. Further, a pair of locking pieces having a hole 263 are fixed to one side edge of the base 201, and a pair of pins 367 of the above-mentioned masking unit extraction fitting 264 are inserted into and removed from the hole 263. It's getting old.

Next, the masking unit storage device (hereinafter appropriately abbreviated as storage device) 300 will be explained. As shown in FIGS. 3 and 5, the storage device 300 includes a pair of rails 30 extending in the AA′ direction.
1 and a storage frame 302 mounted on the rail 301 so as to be movable in the AA' direction. In this example, four masking units 200 are mounted on the storage frame 302.
It is stored in 02.

Note that the masking unit 200 can be taken in and out from a take-out port 303 opened on the C-direction side surface of the storage frame 302, and the masking unit 200 is moved to the CC' by guide rails and rollers (not shown). It is now possible to transport the product in the following directions.

As shown in FIGS. 3 to 5, the work identification device 400 is a part of the leak testing device main body 100.
A pedestal 401 is arranged in series on the C' side (workpiece loading side) and is fixedly placed on the base 101, and a pair of guide rails 4 placed on this pedestal 401.
A trolley 4 that is slidably provided on 02 in the AA′ direction
03, conveyor rollers 404 arranged on this truck 403, and bracket 405 to transport the truck 403.
A pair of guide rails 406 are fixed on the roller 404 and are disposed opposite to each other along both ends of the roller 404.
and a workpiece identification device main body 410 installed on a cart 403.
04 is driven by a drive motor and chain (not shown).

Then, the work identification device 400
The type of workpiece W that has been conveyed and stopped at the predetermined position of 04 is identified by extending the identification rod 419 of the workpiece identification device main body 410, and the workpiece identification signal is output to the control device of the indexing device 350. It's becoming like that.

Each related device is formed as described above,
The masking unit indexing device 350 makes it possible to stop the carriage 357 at a desired position by moving the cart 354 in the AA' direction along the takeout port 303 of the masking unit storage device 300 and moving the carriage 357 up and down. ing.
Further, it is possible to approach and move away from the masking unit entrance of the leak test apparatus main body 100. Then, the masking unit indexing device 350
The take-out roller 373 can be connected to the roller on which the masking unit 200 of the masking unit storage device 300 is placed, and the conveyance roller 371 can be connected to the conveyance roller 140 of the leak testing apparatus main body 100. .

The operation of the embodiment configured in this way will be described next.

First, the conveyance roller 404 of the identification device 400 is
When a drive motor (not shown) is activated and rotated to place the workpiece on the conveyance roller 404, the workpiece W is conveyed in the C direction and comes into contact with a stopper (not shown) to stop at a predetermined position. At this time, it is detected that the workpiece W has come into contact with the stopper, and the drive motor of the conveyance roller 404 is stopped.
This causes the conveyance roller 404 to stop rotating.

At the same time as the workpiece W is stopped, the identification device main body 410
is activated to identify the type of workpiece and send a workpiece identification signal to the control device of the masking unit indexing device 350.

The control device of the masking unit indexing device 350 operates the piston cylinders 358 and 361 based on the input workpiece identification signal, and moves the carriage 357 to the storage where the masking unit 200 corresponding to the identified workpiece is stored. Frame 3
Move it to the extraction port position of 02. When the carriage 357 is stopped at the masking unit 200 ejection opening position, the piston cylinder 369 is actuated to open the masking unit ejection fitting 364.
is extended into the frame 302 of the storage device 300. When the extension of the masking unit removal fitting 364 is stopped, the piston cylinder 365 is activated, and the piston rod is extended to insert the pin 367 into the hole 263 drilled in the masking unit 200.
Insert. When the pin 367 is inserted into the hole 263, the cylinder 369 is activated again, its piston rod 369a is shortened, and the masking unit 2
00 is taken out from the storage device 300 and pulled out onto the conveyance roller 371 via the take-out roller 373. The masking unit 200 is connected to the conveying roller 37.
1, the piston cylinders 358 and 361 operate to adjust the position of the carriage 356, and the transport rollers 371 arranged on the carriage 356 and the inspection chamber 170 of the leak test apparatus main body 100 are moved. The conveyor rollers 140 arranged in the conveyor rollers 140 are moved so that they are aligned in a line.

When the transport rollers 371 and 140 are aligned, the drive motors 372 and 141 are activated to rotate the transport rollers. As a result, the masking unit 200 placed on the conveyance roller 371 is conveyed to the conveyance roller 140 until it comes into contact with a stopper (not shown) provided at the forward end of the conveyance roller 140. When it is detected that the masking unit 200 has come into contact with the stopper, the drive motors 372 and 141 are stopped, and thereby the rotation of the conveyance rollers 140 and 371 is also stopped.

When the transport roller 140 is stopped, the piston cylinder 142 is actuated to extend its piston rod, rotating and raising the catch 143, thereby supporting the rear end of the masking unit 200. Therefore, the masking unit 200 is
The aforementioned stopper and fastener 143 (not shown)
Accordingly, the masking unit 200 corresponding to the workpiece is positioned within the inspection chamber 105, and thereby the masking unit 200 corresponding to the workpiece is carried into the leakage testing apparatus main body 100.

When the masking unit 200 is positioned, the piston rod 106 is actuated to extend the piston rod and move the bracket 104.
Lower it in the B' direction, and then swing cylinder 1.
24, the upper support plate 202 of the masking unit 200 is clamped by the fastener 125 attached to the swing cylinder 124. next,
The piston cylinder 106 is actuated to shorten its piston rod and lift the upper support plate 202 of the masking unit 200.

On the other hand, in the workpiece identification device 400, the piston cylinder 407 operates to shorten the piston rod at the same time as the workpiece identification is completed, and the carriage 40
3 in the direction A', and move the workpiece W to the inspection room 170.
guide rails 208, 209, and 213 of the masking unit 200. And masking unit 2
When the upper support plate 202 of 00 is lifted, a stopper for cylinder operation (not shown) provided at the forward end of the conveyance roller 404 returns to its original position, and at the same time, an extrusion device (not shown) is activated to push the workpiece W. is fed onto the guide rails 208, 209 of the masking unit 200 via the roller 160.

When the work W is carried into the masking unit 200, the piston cylinder 106 is actuated to extend the piston rod and the bracket 105 is moved.
Lower the masking unit 200 in the direction B'.
The workpiece is clamped by the upper support plate 202 via the upper surface of the workpiece W, that is, the identification pallet W'. With this clamp, the masking body 2
51, 252, and 261 are pressed against the open ends of hollow portions opened on the lower and upper surfaces of the workpiece, respectively, and close these openings according to the elastic force of the spring. At the same time, the piston cylinder 11
6, 117, 121, 130, 131 respectively operate, and the pads 113, 114, 122, 136, 13 are attached to the piston rods as appropriate.
7 are respectively moved to the masking unit 200 side, and by these, the masking unit 200
be held from the front, back, left and right. As a result, the work W
The masking body provided in the masking unit is displaced toward the work W side in accordance with the position and shape of the opening end of the hollow part opened on the front, rear, left and right sides of the work piece W, and the masking rubber attached to the tip of the masking body to close those openings.
For example, according to the masking unit of this embodiment, the support plate 222 is pushed in the direction A' by the stopper, and the masking bodies 223 and 230 are pressed against the workpiece W.
Close the opening on the side of the At this time,
At the same time, the clampers 139 and 13 are connected to the manifolds 253 and 254 of the masking unit 200, respectively.
8 is communicated.

In this way, all the open ends of the hollow part of the workpiece W are closed, and the test fluid can be supplied to the hollow part via the clamper 138. Then, a test fluid is supplied from a test fluid supply source (not shown) to the hollow part of the workpiece W via the clamper 138,
The pressure inside the hollow part is increased to a predetermined pressure. After that, a pressure detector (not shown) measures the change in the pressure inside the hollow portion over time, and the presence or absence of leakage is tested based on the degree of pressure drop.

As a result of this leakage test, if the product is determined to be good, the piston cylinders 116, 117, 121,
130, 131 operate again, and the pads 113,
114, 122, 136, and 137 to release the masking unit. As a result, the workpiece W is released from the masking state by the masking unit 200. Then, when the masking state of the workpiece W is released, the piston cylinder 106 operates to shorten the piston rod, raise the bracket 105 in the direction B, and lift the upper support plate 202 of the masking unit 200, thereby removing the masking of the workpiece W. Release the vertical grip. In this way, when the clamping of the work W is released,
The extrusion device (not shown) operates again to extrude the workpiece W from the inspection chamber 170 via the carry-out roller 161. Then, when the work W is carried out, the extrusion device returns to the original position, and the piston cylinder 407 is further activated to return the cart 403 to the original position.

Now, when the cart 403 is returned to its original position and the next workpiece W to be tested is placed on the transport rollers 404, the workpiece W is identified according to the procedure described above. If the workpiece W is the same as the previous workpiece W, the leakage test for the workpiece W is directly performed according to the procedure described above. On the other hand, if the workpiece W placed next is of a different type from the previous one, the masking unit 200 installed in the inspection chamber 170 performs the inspection in the reverse order of the installation procedure described above. It is taken out from the chamber 170 by the indexing device 350 and stored in the original position of the storage device 300. Then, based on the identification signal output from the identification device 400, another corresponding masking unit 200 is taken out from the storage device 300 and sent to the inspection room 170 to be installed in the same procedure as described above.

As described above, according to the masking unit indexing device according to the present embodiment, the masking unit corresponding to the workpiece identified by the workpiece identification device is automatically indexed and taken out from the masking unit storage device. This has the effect of being carried into and attached to the main body of the leak testing device.

Further, according to the leakage testing device of the above embodiment, the type of workpiece carried in is identified by the workpiece identification device, and the masking unit indexing device is operated based on this identification information to select the masking unit corresponding to the workpiece. Take out the masking unit from the storage device, insert the masking unit into the leak test equipment main body, and automatically attach it to the inspection chamber.Then, the workpiece is carried into the center of the masking unit and placed, and the leak test equipment is opened. Since the main body presses the masking body of the masking unit against the opening of the workpiece to close the opening end, in other words, the masking work of the leak testing device is completely automated. This has the effect of significantly improving workability.

[Effect of idea]

As explained above, according to the present invention, the masking unit corresponding to the given workpiece identification signal can be indexed and taken out from the masking unit storage device, thereby automating a series of leakage test operations. In addition, it has the effect of improving workability and productivity in leakage testing of a wide variety of small quantities of workpieces.

[Brief explanation of the drawing]

Figures 1 and 2 are a front view and a side view, respectively, of an embodiment of the present invention, and Figures 3 to 5 are Figures 1 and 2.
FIGS. 6 and 7 are a plan view, a front view, and a side view, respectively, of the entire leakage testing apparatus to which the embodiment is applied, and FIGS. 6 and 7 are a plan view and a side view, respectively, of an embodiment of the masking unit. DESCRIPTION OF SYMBOLS 100... Whole leakage test device, 200... Masking unit, 300... Masking unit storage device, 350... Masking unit indexing device, 354... Dolly, 357... Carriage, 3
63... Guide rail, 364... Masking unit extraction fitting, 367... Pin, 371...
Conveyance roller, 373... take-out roller.

Claims (1)

[Scope of Claim for Utility Model Registration] A leakage testing device which is movably provided along the outlet of a masking unit storage device in which a plurality of masking units corresponding to each type of workpiece are stored in predetermined positions, respectively. A cart movably installed at the position of the masking unit entrance of the main body, a carriage mounted so as to be movable up and down on a guide rail provided upright on the cart, and a carriage extending horizontally to the carriage. a retractable pin provided so as to be movable in the direction of the outlet along the guide rail and disposed so as to be able to engage with a hole formed in the masking unit;
a masking unit take-out fitting for inserting and taking out the masking unit by engaging the pin in the hole; 1. A masking unit indexing device for a leak testing device, comprising: a conveyance table including a take-out roller for conveying a masking unit that is taken in and out by a unit take-out fitting.