JPS5962489A - Device for replacing air in vessel head space - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for replacing air in a container headspace in a sealing machine.

Figures 1 and 2 show conventional sealing machines, and (a) shows 1
A sealing machine rotating body is driven and rotated by a drive device (not shown), onto which a container (b) filled with liquid by a filling machine is supplied via a transfer star wheel.

(c) is a cam having a cam groove (ω) fixed to the rotating shaft of the rotating body, and a sealing plunger (e) is engaged with the cam groove (a), and as the rotating body (α) rotates. It is designed to move up and down.

The plunger body (A) has a throat (≠,
A seal (n), an energizing bullet for pressing down the enclosed seal head (t), a magnet σ for adhering the seal, and a cam follower (k) that engages with the cam groove (d) are mounted, and are mounted by a known mechanism. The sealing body (
ml is sealed at the mouth of the container (b).

A nozzle hole (rL) for inert gas injection is provided at the bottom of the plunger body (c), and a nozzle hole (rL) for inert gas supply and
+ is connected.

When the container (b) filled with the liquid is now supplied onto the rotating body (cz), the sealing plunger (=l is lowered by the cam follower (&1) that engages with the cam groove (d) of the cam (C). Ru.

As the plunger (e) descends, the lower part of the plunger body (V) comes into contact with the mouth of the container (bl) as shown in Figure 2. Blow out the active gas and scrape the container)', (-!'
-X <h'> Injection into the same headspace ('')
Replace the remaining air inside with inert gas.

In this way, while blowing inert gas.

When the plunger (6) is further lowered, the seal H
caps the mouth of the container (hl), then the enclosed body (rn)
is squeezed at the throat (q) to complete the seal.

In the conventional device described above, when an inert gas is blown into a container and fills the inner cavity of the plunger body (a), the flow of the inert gas causes the surrounding gas to be mixed with it due to an entrainment phenomenon. Since an entrained flow is generated, air from outside the machine is also allowed to flow in through the sealant supply port (ml), and the inert gas concentration in the lower internal cavity of the plunger body (f) decreases, and the air from outside the machine also flows into the sealant supply port (ml). The inert gas inside the tank was replaced with the inert gas, resulting in a decrease in the replacement rate.

The present invention has been proposed in order to eliminate such drawbacks, and is intended to provide a container head drop immediately before the seal or sealant is supplied to the lower part of the sealing plunger of a container sealing device without a sealant supply port. This invention relates to an apparatus for replacing air in a container head F, characterized in that a plurality of nozzles with different blowing directions for blowing inert gas into the space are installed.

In the present invention, the sealing plunger is equipped with a plurality of nozzles having different blowing directions for blowing inert gas into the head space of the container immediately before the pressure, sealing, or sealing body is supplied, as described above. Since the sealant supply port is eliminated, when inert gas is blown into the container headspace by the nozzle, there is no inflow of air from the sealant supply port that is accompanied by the gas, and there is no need to use the blower to blow inert gas. Since multiple nozzles are installed in different directions, it is possible to prevent air from entering from the bottom of the sylanger body.
Moreover, the inert gas concentration in the lower part of the plunger is increased, and the replacement rate is significantly improved.

The present invention will be described below with reference to the illustrated embodiments.

(1) is a rotating body rotatably held on a fixed shaft (not shown), and sealing plungers (2
) is slidably held.

(3) is a container stand rotatably held on the fixed shaft;
4) is a roller constituting a cam follower provided on the upper part of the syringe (2), which engages with a cam groove (6) provided in the plugging cam (5) that is integrated with the fixed shaft.

The plunger (2) is moved up and down as the rotating body (1) rotates.

A container (7) is placed at the bottom of the plunger (2) during the capping process.
A throat (9) is provided which has a crown constriction portion for constricting the folds of a sealing body (8) such as a crown which is placed on the sealing body (8).

In addition, a magnet (stopper 01 holding the IO) is slidably attached to the lower end of the plunger (2), a centering part 01 is attached to the lower part of the plunger (2), and a centering part is attached to the center part of the plunger body. A shoulder portion (151) is provided to restrict the lowering of the spring seat α4, which is slidably held via a spring (13).A shoulder portion (151) is provided on the top of the capper aυ to raise the cap head αυ. A spring that is biased to
I61 is arranged, and the rotating body (1) is further provided with a stopper Ql)
A stopper αη for stopping the rise of is fixed.

Note that (11α) in the figure is the stepped portion of the capper I.

Further, at the bottom of the plunger body, a soil nozzle hole brocade for inert gas injection is provided facing the head of the container (7) (79), and an inert gas supply pipe is connected thereto. An auxiliary nozzle hole (2[) for inert gas injection is provided in the plunger body below the main nozzle hole α mark, and an inert gas supply pipe r21) is connected to this. Note that the lower part of the plunger body is not provided with a sealing body supply port as in the conventional case.

Since the illustrated apparatus is constructed as described above.

A container (7) filled with liquid is supplied onto the container stand (3) directly below the plunger (2), and the sealing body (8) is placed at the lower end of the capper Qη by a supply means (not shown) as shown in FIG. and is attracted and held by magnet αI.

When the rotating body (1) is driven to rotate in this state, the roller (4)
) and the cam groove (6), the sylanger (2) is lowered. However, the stopper Ql) is held in the raised position by the biasing force of the spring Oe and does not descend. Therefore, the sealing body Q is centered at the centering portion a of the old plunger body. (See Figure 4) In this state, inert gas is blown out from the main nozzle hole and the auxiliary nozzle hole, and the remaining air in the container (79 heads) is converted into inert gas. Along with replacing
The inner cavity of the lower part of the plunger body is filled with an inert gas atmosphere. In this case, the inert gas may be blown out immediately after the lower part of the plunger body is brought into contact with the mouth of the container (7).

As shown in Fig. 6, the inert gas blown out from the nozzle holes 08 and (201) expels the air in the radon (7α) into the container, and the radon flows into the container (7α) and the lower part of the plunger body. The inside of the container is made into an inert gas atmosphere.The inert gas is blown directly into the main nozzle hole (1 or 1 container F space (7α)), which has a displacement effect and
The mixed flow with the air flowing back from the container (7) fills the lower lumen of the plunger.

The auxiliary nozzle hole (2) blows inert gas into the inside of the lower part of the plunger to increase the inert gas concentration in the atmosphere.This increases the inert gas concentration in the surrounding gas entrained by the jet of the main nozzle hole TTGL. .

Prevent air from entering the machine.

When the plunger body further descends while blowing inert gas in this way, the stepped portion (11α) of the capping head (11) hits the spring a powder, which is set to have a stronger spring force than spring 06). The plug head 0υ comes into contact with the energized spring seat I, and from this point on, the plug head 0υ descends together with the plunger body.

When the sealing body (8) comes into contact with the container opening of the container (7) which is centered at the centering part (L-ri), the capping head α1
) stops descending, and from this point on, the plunger (2) descends, and the sealing body (8) is squeezed into the container mouth by the constriction part of the throat (9). At this point, the capping head 0υ pushes up the spring seat (14) against the biasing force of the spring α3) due to the pressure contact force with the container (7), resulting in a cap above the throat (9). (See FIG. 5) Furthermore, the sealing body (8) attached to the container mouth is squeezed by the throat (9) so as to conform to the shape of the container mouth, completing the capping.

Note that the blowing of the inert gas may be stopped when the silanger body is lowered again.

Note that when the plunger body is lowered again, the main nozzle hole θ~
Stop blowing inert gas from the auxiliary nozzle hole (2
Alternatively, only the blowing from the OL may continue.

Further, when inert gas is blown in, it may be arranged to first start from the main nozzle hole H1 and then blow from the auxiliary nozzle hole 01.

At this time, when the plunger body is lowered again, the main nozzle hole 08)
The blowing from the auxiliary nozzle hole may be continued, or the blowing may be stopped.

Furthermore, each of the nozzle holes a81 (company) may be made plural ('-0).

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view showing the outline of a conventional sealing machine. FIG. 2 is an enlarged vertical cross-sectional view taken along the line II-II in FIG. FIG. 6 is a longitudinal sectional view showing the operating state of one embodiment, and FIG. 6 is a partially enlarged detailed operating diagram of FIG. 4. (2)...Sealing silanja, (8)...Sealing body, (
1 ladle...Main nozzle hole for inert gas injection, (A)・
・・Auxiliary nozzle hole dyeing for inert gas injection 1 Figure A lower year・A y f 笥 °′ hi. Continued from page 10 Inventor Sadahiro Abe 1 Takamichi, Iwatsuka-cho, Nakamura-ku, Nagoya Mitsubishi Heavy Industries, Ltd. Nagoya Research Center Inventor Makoto Sasaki - 60 Kutansho, Iwatsuka-cho, Nakamura-ku, Nagoya 1 Within Churyo Engineering Co., Ltd. Applicant: Churyo Engineering Co., Ltd. 1, Kutansho, Iwatsuka-cho, Nakamura-ku, Nagoya City

Claims (1)

[Claims] A container sealing device without a sealant supply port has a plurality of nozzles installed at the bottom of the sealing plunger with different blowing directions for blowing inert gas into the container headspace immediately before the sealant or sealant is supplied. A device for replacing air in the headspace of a container.