JPS609712Y2 - Cylindrical container mounting device in airtightness test equipment for cylindrical containers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mounting device for a cylindrical container in an airtight test device for cylindrical containers, and more particularly to a device for opening and closing a test pocket provided on a rotatable rotary plate.

A well-known opening/closing device of this kind, as described in Japanese Patent Application Laid-Open No. 47-16185, has a rotatable rotary plate that is uniformly arranged along the circumference, is rotatably supported, and has teeth cut on its outer periphery. It has a connecting rod with an axis.

This connecting rod is for operating the test pocket opening/closing mechanism.

On the other hand, a segment gear meshing with the shaft and a cam ring disposed laterally to the segment gear are attached above the connecting rod.

On each side of the segment gear there are two rollers that roll on the face of the cam ring and guide the segment gear.

The cam ring is configured to cause rotational movement of the segment gear.

This rotational movement is converted into a linear movement via the connecting rod to open and close the test pocket.

When the rotating plate rotates, the segment gears placed between the stationary cam rings are moved precisely following the cam surface.

When the shape of the cam ring changes, the segment gear rotates accordingly, and this rotational movement is transmitted to the toothed shaft and the connecting rod connected to the shaft.

This creates a linear movement for opening and closing the test pocket.

In the case of this known cylindrical vessel tightness test device, the spider is provided with a sturdy support arm for mounting a cam ring which causes the opening and closing movement of the test pocket by a change in its profile.

It has 4 test pockets, thereby allowing 20
In the case of a test device with a spider, it increases the mass of the cylindrical container airtightness test device during operation.

This means that when the spider rotates, it is additionally accelerated and must be decelerated.

Furthermore, a mounting frame for the mounting of the cam ring is required, which limits the structurally required spacing of the cam ring guide surfaces for the rollers on both sides.

On the other hand, in this cylindrical container airtightness testing device, large rotations of the sector gear tend to cause unstable operation.
Therefore, there is a problem in that it is difficult to open and close the test pocket.

The purpose of the present invention is to obtain a mounting device for a cylindrical container for airtightness testing which operates reliably, simplifies the structure, and saves material costs, and which can also rotate and move linearly. The object of the present invention is to develop the device structurally in such a way that the tightening stroke is carried out by means of parts.

According to the present invention, in a mounting device for a cylindrical container in a cylindrical container airtightness testing apparatus having a test pocket provided along the circumference of a rotating plate, the cylindrical container is supported within a frame supported by the rotating plate and can be moved linearly. form a rack on the slider,
The slider is provided with a cam roller that is guided along an annular cam guide that surrounds the rotating shaft of the rotary plate, and the mount rotatably supports a shaft that has a gear that meshes with the rack. A mechanism for opening and closing the test pocket is connected to this crank lever, and the linear movement of the slider caused by the movement of the cam roller of the slider along the cam guide is transferred to the axis via the rack and gears. A configuration is adopted in which the rotational movement is converted into rotational movement of the crank lever.

In the present invention, the slider connected to the lever is supported by the pedestal and does not displace unnecessarily due to the meshing of the rack and gears, so the cam guide body that guides the cam roller only needs to be provided at the location where opening and closing operations are performed, and it extends over the entire circumference. Since there is no need to provide one, the entire device can be made smaller and lighter.

Further, since the slider is supported for sliding, the support is reliable, and the shaft of the gear that meshes with the rack of the slider can be supported at two locations on both ends, so the support is also reliable.

Furthermore, by providing the cam guide only in the opening/closing operation part, the slider can be freely slid and displaced in other parts for maintenance and adjustment, and there is no structural problem in increasing the stroke. Since a linearly displaced slider is used, there is an advantage that the test pocket can be opened and closed over a wide range.

Hereinafter, the embodiments of the present invention will be explained with reference to the drawings.
As shown in the figure, the airtightness testing device has a rotary plate 2 that is rotatable around a hollow shaft 1 so as to pass through a cylindrical container insertion location and a cylindrical container removal location (not shown).

The test pocket that can be opened and closed to receive the cylindrical container 3 to be tested is
They are arranged at regular intervals along the periphery of the rotary plate 2, and each test pocket is attached to a tightening plate plate 4 elastically supported at its rear end and a tightening member 5 for opening and closing the pocket. The cylindrical container 3 is formed between the rubber packing 6 and the cylindrical container 3.
is tightened between the tightening plate plate 4 and the rubber packing 6 during the test.

An arm 7 projects from the tightening member 5, and the tightening member 5 and the arm are integrally fixed.

A sliding rod 8 fixed at right angles to the tip of the arm 7 is inserted into a bush 9 fixed to the rotating plate 2.
There is a sliding displacement inside it in the left-right direction in the figure.

A connecting member 10 is fixed to the end of the sliding rod 8 opposite to the arm 7, and this connecting member 10 connects another rod (see FIG. 1) that is provided parallel to the sliding rod 8. ) reaches the far end of the test pocket.

11 is a support plate fixed to the rotary plate 2, and this support plate is attached to the mount 12.
A slider 13 is slidably supported inside this frame 12.

The slider 13 is provided with a rack 14 as shown in FIG. 2, and the rack 14 is constantly meshed with a gear 15 fixed to a shaft 22 supported on the frame 12 at right angles to the slider 13.

A crank lever 16 is connected to the free end of the shaft 22, and the tip of the crank lever 16 is connected via a pin 17 to a lever 18 pivotally attached to the tip of the arm 7.

The free end of the slider 13 has an engaging pin 1 fixed thereto.
9 and a cam roller 20 supported by this pin 19.

The cam roller 20 is an annular cam guide 2 that is coaxially and immovably attached to the rotary plate 2 at a predetermined distance.
It moves within the two guide grooves of No. 1.

This cam guide body 21 rotates approximately 100 times during one rotation of the rotary plate 2.
It has a pocket opening area that spans 260° and a pocket closure area that spans approximately 260°.

The distance of the rubber backing 6 of the clamping element 5 to the clamping plate 4 between the pocket opening areas is greater than the height of the cylindrical container 3 to be tested.

The cylindrical container 3 can therefore be placed in and taken out of the test pocket.

In the closed region of the box, the cylindrical container 3 is tightly clamped between the clamp plate 4 and the rubber seal 5.

During operation of the test device, the rotating plate 2 rotates around the hollow shaft 1.

Accordingly, the cam roller 20 enters the pocket closing region of the cam guide 21 and moves the slider 13 linearly in the direction of the rotating plate 2.

Then, by the gear 15 meshing with the rack 14, this linear movement is converted into a rotational movement of the shaft 22 and the crank lever 16 connected to this shaft 22, and the arm 7 is tightened via the lever 18 acting as a connecting member. Together with the member 5 and the rubber seal 6, the cylindrical container 3 to be tested is introduced into the test pocket and linearly pressed so that it is firmly clamped between the clamping plate 4 and the rubber seal 6.

The cylindrical container 3 is then supplied with compressed gas, the test result appears, and then the cam roller 20 enters the pocket opening area of the cam guide 21.

Therefore, the cylindrical container 3 that has been tested is removed, and the cylindrical container 3 to be tested next is accommodated in the testing device.

[Brief explanation of the drawing]

FIG. 1 is a partial cross-sectional view of a main part of the airtightness testing apparatus of the present invention, and FIG. 2 is an enlarged cross-sectional view of a portion including a slider and a pedestal. 1...Hollow rotating shaft, 2...Rotating plate, 3
...Cylindrical container, 4...Tightening plate plate, 5.
...Tightening member, 6...Rubber gasket, 7
- Bent arm, 8 - Bent sliding rod, 9... Bush, 10... Connecting member, 11... Support plate,
12... Frame, 13... Slider, 1
4...Rack, 15...-Gear, 16-
----- Crank lever, 17...Pin, 18
... Lever, 19 ... Engagement pin, 20
...Cam roller, 21...Cam guide,
22... Axis.

Claims (1)

[Scope of utility model registration request] In a mounting device for a cylindrical container in a cylindrical container airtightness testing apparatus having a test pocket provided along the circumference of a rotary plate, a rack 14 is mounted on a slider 13 supported within a pedestal 12 supported by a rotary plate and capable of moving linearly. The slider 13 is provided with a cam roller 20 that is guided along an annular cam guide 21 that surrounds the rotation axis of the rotating plate, and the mount 1
2 includes a shaft 2 having a gear 15 that meshes with the rack 14;
2 is rotatably supported, a crank lever 16 that rotates with the rotation of the shaft 22 is fixed to the shaft 22, and a mechanism for opening and closing the test pocket is connected to the crank lever 16.
A cylinder characterized in that the linear motion of the slider 13 caused by the motion of the cam roller of the slider along the cam guide body 21 is converted into the rotational motion of the shaft 22 and the crank lever 16 via the rack 14 and gear 15. A mounting device for cylindrical containers in container airtightness test equipment.