SU1728692A2 - Device to test tightness of gas-filled articles - Google Patents

Description

a pusher 15 is installed with a possibility of reciprocating movement in a vertical direction, in the lower part of which a cover 16 is fixed through a ball support 17. In the upper part of the pusher 15 an adjustable spring 18 is installed, holding the cover 16 in the upper extreme position. A pin 19 is installed in the pusher 15, which cooperates with a lever 12 having a blind hole 20 for installing a spring 21, the other end of which is installed in a blind hole 22 of the lever 13, in the upper part of which a roller 23 is pivotally mounted. A lever 24 is fixed on the lever 13 through the hole

25 lever 12, which restricts the free running of the finger 24 and, accordingly, the lever 13.

The housing 6 in the upper part has an annular groove 26 enclosing the chamber 7 and having openings 27 and 28. The housing 6 has holes 29 and 30. There are fixed faceplate 31 on the vertical axis 3, to which the power copier 32 is mounted, and the copier 33, profile which opens and closes the covers 16 through the levers 11-13 and the pusher 15. On the drum 1 by means of pins 34 a drum 35 is fixed, the cover 36 of which is spring-loaded by means of a spring 37 and has the possibility of vertical movement relative to the faceplate 31 on the pins 38 under the influence of the spring 37.

In the cover 36 of the drum 35 there is a groove 39 connected to a gas pipeline and a distribution manifold (not shown). The groove 39 through the hole 40, made at the end of the drum 35. the pipe 41 and the hole 27 is connected to the protective grooves 26, made in the housing 6 of the chamber 7. The exhaust gas from the protective grooves

26 through a hole 28. A pipe 42, a hole 43 to a groove 44 connected through a hole (not shown) with the atmosphere. The cover 36 has holes 45 and 46, the drum 35 has holes 47 and 48 connected by pipes 49 and 50 with holes 29 and 30 made in the housing 6 of the chamber 7, through which the chamber 7 is blown off from the distribution manifold (not shown). Through the holes 51 and 52 in the lid 36, the hole 48 in the drum 35, through the pipe 50 through the holes 29 and 30 in the housing 6 of the chamber 7, the pipeline 49. the hole 47 in the drum 35, the hole 51 in the lid 36 purge the chamber 7 to the detector leakage during leak testing. Through the hole 53 in the lid 36 and the groove 54 formed at the end of the drum 35, the leak detector is actively purged with a gas flow from the distributor manifold (not shown) through a gas flow regulator (not shown).

.On the first position (in the direction of

rotation of the drum 1) in the sector W, the purging of the chamber, the outlet 45 in the lid 36 ends with a pipe 55, the second end of which is fixed in the bracket 56.

0 In the bracket 56 on the axis 57, which is seated in bearings 58, a two-bladed flag 59 is fastened, the top blade has an opening 60, and the bottom blade of the flag contacts the end of the pipeline 55. One side of the flag 59 opposite its hole 60 is reinforced by a source of light radiation 61, and opposite the aperture 62 in the bracket 56 a light emission receiver 63 is placed.

0 Camera 7 rotates the drum 1 in the following positions: D - position of loading the camera with product 8; E - intermediate positions required for sealing and re-sealing the chamber: Ж - positions of chamber purging; 3 - positions of accumulation of test gas flowing from an unpressurized gas-filled product 8 into the cavity of the chamber; And - measurement position; K is the position of the purge of the leak detector; L - position unloading products 8 from the camera.

The device works as follows.

Drum 1 performs a periodic

5 rotation, moving the camera 7 at an angle

360 °

a, where n is the number of chambers 7, from an electromechanical drive (not shown) through the carrier 5 and the maltese cross 4.

0 At position D of loading the products 8 into the chamber 7, the cover 16 under the action of the copier 33 through the levers is open. The chamber 7 is loaded product 8, compressed with test gas, to be monitored for tightness.

During the subsequent rotation of the drum 1, the cover 16 through the levers 11-13 and the pusher 15 under the action of the copier 33 closes the chamber 7. In this case the copier 33, interact

0 with the roller 23 through the levers 11-13 rotates the pusher 15c with the lid 16. The lever 11. interacts with the stop 14, stops, and the lid hangs at a distance of 2-3 mm from the plane of the body 6. Then the roller 23

5 begins to interact with the cam 32. turning the lever 13, which through the spring 21 presses on the lever 12, ensuring the placement of the hole 25. The lever 12, pressing on the pin 19, begins to move

five

the pusher 15 with the cover 16, overcoming the force of the spring 18 vertically down, provides a tight, without impact, the cover 16 against the body of the camera 7. Preventing the cover 16 sliding relative to the body 6 in the plane of the connector. The presence of the ball bearing 17 eliminates the possibility of skewing the cover 16. and the violation of the tightness of the camera 7.

Chamber 7 with product 8, sealed with lid 16, when the drum 1 is rotated enters the first position of sector Ж, purging the chamber. At this time, the carrier gas from the groove 39 formed in the lid 36 of the drum 35, through the opening 40, the duct 41, the opening 27 in the housing 6 of the chamber 7 passes through the protective groove 26, protecting the chamber 7 from the environment, creating a protective cavity around chambers 7, and through an opening 28 through conduit 42, an opening 43 and a groove 44 are vented to the atmosphere.

Through the opening 46, the opening 48, the pipeline 50, the opening 30 of the carrier gas is fed into the chamber 7 to purge the chamber (to remove from the chamber 7 atmospheric air that entered the chamber 7 during the period when the chamber 7 was depressurized, i.e. the cover 16 open). The contents of chamber 7 are removed through opening 29, pipeline 49, opening 47, opening 45, pipeline 55 to the atmosphere, but the end of pipeline 55 contacts the lower blade of the flag 59, and the jet of the gas flow coming out of the pipeline 55. deflects flag 59 turning it on the axis 57, the upper blade of the flag 59 with a hole 60 also deflects, blocking the top blade of the flag 59, the light axis that previously (before turning the flag 59) passed from the light source 61 through the coaxial holes 62 and 60 to the light receiver 63. erekrytie light axis fixed circuit control device and indicates the presence of gas flow passing through the chamber 7, with its purge, i.e. a signal on the tightness of the chamber 7 is recorded.

In case a foreign body accidentally gets under the lid 16 when sealing the chamber 7 (for example, the output of a controlled product, foreign particles, etc.), the lid 16 does not close tightly or seal the chamber 7. When the chamber 7 is purged, walks into the gap formed between the lid 16 and the casing 6 of the chamber 7, does not enter the pipeline 55, and the flag 59 remains in its vertical initial position. Light receiver 63 receives light from source 61 passing through ibO apertures 62. The continuity of the light emission at the time of the stand of the drum 1 at the moment of purging the chamber 7 is fixed by the device control circuit. Chamber 7 is filled with a control circuit, and after depressurization of the chamber at position E and unloading the product 8 with a gripper arm (not shown) by a sorter (not shown), product 8 from this chamber 7 is sent to the container for the products to be rechecked (not shown). ). This trim improves the reliability of the leak test and the reliability of the leak check device.

When the chamber 7 is moved to the position 3, accumulation of test gas escaping from the unpressurized product 8, the openings 47 and 48 are locked by the lid 36, and gas exchange takes place between the internal cavity of the unpressurized product 8 and the sealed cavity of the chamber 7. The chamber 7 then enters the position AND measurement, with the holes 47 and 48 made in the drum 35 aligned with the holes 51 and 52 made in the cover 36 of the drum 35, and the cavity of the camera 7 is connected to the flow controller measurement with a leak detector ( not shown). The carrier gas from the flow regulator measurement, the passage through the holes 52 and 48, the pipeline 50, the hole 30 in the housing 6 of the chamber 7, forces the gas mixture from the chamber 7 through the opening 29, through the pipeline 49, the holes 47 and 51 into the detector leakage (not shown), which, according to the composition of the gas mixture obtained from chamber 7, the presence of test gas in it, generates a Marriage or Goden signal. In the case when chamber 7 is not hermetic, i.e. between the cover 16 and the housing 6 there is a foreign body, the gas stream does not enter the leak detector (not shown), and the output does not enter the gap between the cover 16 and the housing 6, the signal from the detector is missing (if there is a signal, it will not exceed the threshold). But since this unpressurized chamber 7 was remembered by the electronic circuit at the first position W of the purge of the chamber, after unloading product 8 from this camera 7, product 8 regardless of its actual quality (hermetic or unpressurized) by the sorter (not shown) is sent for rechecking. This increases the reliability of the control, eliminates the ingress of unsealed products into suitable ones.

Upon further movement, the drum 35 takes up the position when the groove 54 connects the aperture 53 of the gas flow controller

purge and aperture 51 connected to the leak detector. The carrier gas from the gas flow regulator purge passes through the opening 53, the groove 54 of the drum 35, the opening 51 and the leak detector, providing intensive, adjustable purging of the leak detector before monitoring the next inspected product 8, thereby freeing the previous leak detector and excluding their effect on subsequent measurement.

At this moment, the chamber 7 is unloaded by a gripper arm (not shown) and the product is sorted by the sorter 8 according to the Scrap or Good signal of the leak detector or the control chamber signal of the chamber 7 leaks. When the drum 1 moves, the chamber 6 of the chamber 7 again moves to the loading position D.

In the event that the chamber 7 contained an untight product 8 or chamber 7 was remembered by the electronic control circuit of the device as unpressurized, chamber 7 is not loaded with product 8, but the entire test cycle passes unloaded, at the end of which this chamber 7 is connected to a leak detector (not shown), which generates a Marriage or Goden signal, which indicates the presence of residual test gas from the previous measurement or depressurization of chamber 7, excluding the possibility of false rejection of products 8, caused by the presence of residual prod BNG gas in chamber 7.

Thus, blocking the loading of products 8 into unsuitable for monitoring chambers 7 is performed by a leak detector and electronic control circuit through the gripper loading the manipulator and eliminates the possibility of a biased assessment of the test product 8 due to the instability of the equipment.

The use of a device for monitoring the tightness of gas-filled products of this design will improve the reliability of measurement results and reliability of equipment operation.

Claims (1)

The invention The device for monitoring the tightness of gas-filled products according to author. No. 1640561, from l ich and you By the fact that, in order to increase the reliability of the control by eliminating the loose closure of the chamber, it is equipped with a source and receiver of light radiation and a two-blade flag pivoting around the axis set by its first blade in the area of the chamber outlet opening from the purge position, are aligned with the possibility of crossing the light axis 0 by the second blade of flags, and the output of the light-emitting receiver is connected to the input of the control circuit. . 7 FIG. eight 10