RU2417153C2 - Method of closing container by cover and device to this end - Google Patents

Abstract

FIELD: transport, package.

SUBSTANCE: proposed method comprises placing cover on container neck and applying force thereon from above. Note here that, first, force is applied on first part of cover that includes first part of its perimetre making half of less of said perimetre and, then, on cover second part that includes cover geometrical center to remove excess air from under the cover. Now, force is applied on cover third part located opposite the first part. Note here that force is applied with the help of three piston-type air cylinders arranged vertically in one plane above appropriate cover parts. For this, compressed air is fed into air cylinder top sections at various flow rate to drive pistons downward at various speeds. Note also that air is fed into first air cylinder with its rod arranged above cover first part with flow rate Q₁, while air is fed into second air cylinder with its rod arranged above cover second part with flow rate Q₂, and air is fed into third air cylinder with its rod arranged above cover third part with flow rate Q₃. Mind that Q₁>Q₂>Q₃. In preset time, sufficient for cover closing and excess air removal from under the cover, compressed air feed in terminated and pistons are moved back into initial position. Invention covers also device to implement the above described method.

EFFECT: simplified method and device, higher reliability.

2 cl, 2 dwg

Description

FIELD OF THE INVENTION

The invention relates to methods and devices for closing a container (can) with a lid equipped with lid fixing elements on a latch type container, after filling the container with product by forceful pressing on the lid located on the neck of the container.

State of the art

A known method of closing containers with a lid by melting the opposite layers of the sealed material of the container and the lid using ultrasonic vibrations. A device that implements this method includes a support for supporting the sealing rib, a trunk consisting of a columnar part and a vaulted part, means for pressing the sealing rib to the given support by the top of this trunk and for transmitting ultrasonic vibrations to the sealing rib, and an ultrasonic absorption means oscillations located between the top of the trunk and the edge of the sealing rib to absorb ultrasonic vibrations (patent RU No. 2127696, IPC6 B65B 51/22, B65B 7/16, B31B 1/66, published 03/20/1999).

There are no signs of the known method and signs of the known device that match the features of the claimed inventions.

The reason that prevents obtaining in the known methods and apparatus of a technical result, which is provided by the claimed invention, is the use of melting, as well as ultrasound for this melting.

The closest analogue (prototype) in relation to the claimed method is a method of closing a container with a lid by pre-installing the lid on the neck of the container and then subsequently applying a force on top of the lid part, so that the first part of the lid, including the first part of the lid perimeter, which is half or less than half of its full perimeter, then act on the second part of the cover, including its geometric center, to remove excess air from under the cover, then act on the third part of the cover, opposite the first part relative to its geometric center and including the second part of the perimeter of the cover, comprising half or less than half of its full perimeter, not included in the first part of the cover. At the same time, these force effects are carried out by rolling (using a conveyor) the mentioned containers with a lid thrown on it between the thrust shaft of the conveyor, on the one hand, and the pressure roller with the ring, on the other hand (see the description of the patent for utility model RU No. 67024 , M. C. B60B 15/00, publication date 10/10/2007).

The closest analogue (prototype) with respect to the claimed device is a cover closure comprising a frame, a tension sprocket attached to the frame, a drive and tension drums, a pressure roller, a conveyor belt, a stripper, a thrust shaft, a gear motor, and the pressure roller is rotatable synchronously with the conveyor belt and mounted on a plate made with adjustable height (the same patent No. 67024).

The signs of the known method, which coincides with the features of the claimed invention (method), are that the lid is pre-installed on the neck of the container and then subsequently carry out a force action from above on the lid part, so that first they act on the first part of the lid, including the first part of the lid perimeter, constituting half or less than half of its full perimeter, then act on the second part of the cover, including its geometric center, to remove excess air from under the cover, then act on the third part of the cover, opposite the first part relative to its geometric center and including the second part of the perimeter of the cover, comprising half or less than half of its full perimeter, not included in the first part of the cover.

There are no signs of a known device that matches the features of the claimed invention (device).

The reason that prevents obtaining a technical result in the known method and device, which is provided by the inventions, is that the necessary sequence of force action on the lid is carried out by rolling the container with the lid thrown over it between the pressure roller and the thrust shaft, which complicates the method and the device that implements it , since it requires the use of a conveyor, providing synchronous rotation of the pressure roller with a conveyor belt, adjusting the plate height to adjust the device od varying vertical dimensions of the container.

Disclosure of invention

The problem to which the invention is directed is to simplify the method of closing the container with a lid, as well as to simplify the design of the device that implements it and increase its reliability.

The technical result that mediates the solution of this problem is to exclude the conveyor, pinch roller and thrust shaft while maintaining the functions that they performed in the known method and device (prototypes).

A technical result is achieved in the claimed method in that the lid is pre-installed on the neck of the container and then the force is applied sequentially from above to the lid parts, so that first they act on the first part of the lid, including the first part of the lid perimeter, which is half or less than half of its full perimeter, then they act on the second part of the lid, including its geometric center, to remove excess air from under the lid, after which they act on the third part of the lid, false of its first part relative to its geometric center and including the second part of the cover perimeter, which makes up half or less than half of its full perimeter, not included in the first part of the cover, while the specified force is carried out using three piston pneumatic cylinders mounted vertically in one plane above the corresponding parts of the cover, for which at the same time in the upper parts of the pneumatic cylinders, the pistons of which were previously in the highest position, which is the original, begin to supply compressed air at different rates to ensure that the pistons of the pneumatic cylinders move downward at different speeds, so that air is supplied to the first pneumatic cylinder, the rod of which is located above the first part of the cover, with a flow rate of Q ₁ , to the second pneumatic cylinder, the rod of which is located above the second part of the cover, fed at a flow rate Q ₂ and the third air cylinder, the rod of which is located on the third portion of the cover, air is supplied at a flow rate Q _3, wherein Q _1> Q _2> Q _3, and then after a specified time, sufficient to close the lid container around perimet at the lid and remove excess air from under it, the compressed air in the upper part of cylinders is stopped, and said piston is returned to its original position.

A technical result is achieved in the claimed device in that the device contains a table for arranging containers, three pneumatic cylinders mounted vertically in the same plane above the table, so that the second pneumatic cylinder is located between the first and third pneumatic cylinders, and at the lower ends of the rods at least the first and third pneumatic cylinders perpendicular to these rods mounted thrust plates designed for force impact on the container, the control unit of the pneumatic cylinders, made with the possibility of cyclic and synch onnoy supplying compressed air to the cylinders, and Unidirectional defining airflows when fed into the upper part of cylinders and having nominal sizes of flow areas: D ₁ - for the first actuator, D ₂ - for the second actuator, and D ₃ - for a third actuator, wherein D ₁ > D ₂ > D ₃ .

New features of the proposed method are that the force is effected using three piston pneumatic cylinders mounted vertically in the same plane above the corresponding parts of the cap, for which at the same time in the upper parts of the pneumatic cylinders, the pistons of which were previously in their highest position , which is the source, begin to supply compressed air at different rates to ensure the movement of the pistons of the pneumatic cylinders down at different speeds, so that in the first pneumatic cylinder, the rod of which Position the above the first lid portion, air is supplied at a flow rate Q _1, the second air cylinder, the rod of which is located above the second portion of the cover, air is supplied at a flow rate Q ₂ and the third air cylinder, the rod of which is located on the third portion of the cover, air is supplied at a flow rate Q ₃ , with Q ₁ > Q ₂ > Q ₃ , and then after a specified time sufficient to close the container with a lid around the entire perimeter of the lid and remove excess air from under it, the supply of compressed air to the upper parts of the pneumatic cylinders is stopped, and the mentioned pistons are returned to initial position s.

New features of the claimed device are all of the above features of the device.

Brief Description of the Drawings

Figure 1 shows a functional diagram of a device for closing containers with a lid; figure 2 - connected with the rods of the pneumatic cylinders thrust plates in the plan.

The implementation of the invention

A device for closing the container with a lid contains a table 1 for placing containers (cans) 2 on it with a lid 3 thrown over its neck, three double-acting pneumatic cylinders 4, 5 and 6, mounted vertically above table 1 in the same plane, and a control unit 7 made with the possibility of cyclic and synchronous supply of compressed air to the pneumatic cylinders 4, 5 and 6. The device also contains pneumatic throttles (not shown) that are installed on the air outlets from the pneumatic cylinders 4, 5 and 6 when their pistons move down. The pneumatic throttles determine the air flow rate when it is supplied to the upper parts of the pneumatic cylinders and have the nominal diameters of their bore sections D ₁ for the first pneumatic cylinder, D ₂ for the second pneumatic cylinder and D ₃ for the third pneumatic cylinder, with D ₁ > D ₂ > D ₃ . The control unit 7 is made in the form of a two-line and two-position pneumatic distributor, the outputs of which are connected to the corresponding inputs of the pneumatic cylinders. The control unit also comprises pneumatic control valves (not shown).

At the lower ends of the rods 8, 9 and 10 of the corresponding pneumatic cylinders 4, 5 and 6, respective thrust plates 11, 12 and 13 are installed perpendicular to these rods. The area of the plate 11 (as well as its location) is such that it includes (covers, covers) in plan the first part of the cover 3, i.e. the first part of its perimeter (arc ABC), comprising half or less than half of it (cover) of the full perimeter. The area of the plate 12 (as well as its location) is such that it includes (covers, covers) the second part of the cover 3, i.e. area of its geometric center. The area of the plate 13 (as well as its location) is such that it includes (covers, covers) the third part of the cover 3, i.e. the third part of its perimeter (DEF arc), comprising half or less than half of its (cover) the full perimeter, not included in the first part of the cover.

The operation of the device and an example implementation of the method are as follows.

The container 2, filled with the product, with the lid 3 freely located on it, is mounted on the table 1. In this case, the pistons and the corresponding rods 8, 9 and 10 of the pneumatic cylinders 4, 5 and 6 are in the initial (extreme upper) position. Then, in relation to the air distributor 7, a control action is performed, as a result of which compressed air from the upper (as shown) outlet from the air distributor through the corresponding tube simultaneously enters the upper parts of the pneumatic cylinders 4, 5 and 6, forcing the pistons and corresponding rods 8, 9 and 10 with plates 11 , 12 and 13 move down. Moreover, due to the above-mentioned difference in the nominal diameters of the bore sections of the corresponding pneumatic throttles (D ₁ > D ₂ > D _3. ), The flow rates of compressed air to the upper parts of the corresponding pneumatic cylinders will be different (Q ₁ > Q ₂ > Q ₃ ,). For this reason, the speed of the rod 8 down is maximum, the speed of the rod 9 down is less than the speed of the rod 8, the speed of the rod 10 down is less than the speed of the rod 9. As a result, the necessary force is applied to the first part of the cover 3 by means of the plate 11 ( arc ABC), which therefore partially closes. Then, through the plate 12, the necessary force is applied to the second part of the lid (its geometric center), as a result of which excess air is removed from under the lid. In this case, the rod 9 may not have a plate 12, and the necessary force on the middle of the cover to remove air can be carried out directly by the rod 9. Then, by means of the plate 13, the necessary force is applied to the third part of the cover 3 (arc DEF), which consequently closes the whole.

Then, with respect to the pneumatic distributor 7, a reverse control action is performed, as a result of which compressed air from the lower (as shown) outlet from the pneumatic distributor 7 through another tube enters the lower parts of the pneumatic cylinders 4, 5 and 6, forcing the pistons and corresponding rods 8, 9 and 10 with plates 11, 12 and 13 move up to the starting position. The specified reverse control action can be carried out manually or automatically after a specified time using a pneumatic time switch. Next, the closed container is removed from the table 1, set another container and the above cycle is repeated.

Claims (2)

1. The method of closing the container with a lid by pre-installing the lid on the neck of the container and subsequent sequential force on top of the lid part, so that first they act on the first part of the lid, including the first part of the lid perimeter, which is half or less than half of its full perimeter, then act on the second part of the cover, including its geometric center, to remove excess air from under the cover, then act on the third part of the cover, opposite the first part of the relative but its geometric center and including the second part of the cap perimeter, comprising half or less than half of its full perimeter, not included in the first part of the cap, characterized in that the said force is applied using three piston pneumatic cylinders mounted vertically in the same plane above the corresponding parts of the cap , for which at the same time, in the upper parts of the pneumatic cylinders, the pistons of which were previously in the extreme upper position, which is the original, begin to supply compressed air wow with different flow rates to ensure that the pistons of the pneumatic cylinders move downward at different speeds, so that air is supplied with a flow rate of Q ₁ to the first pneumatic cylinder, the rod of which is located above the first part of the cover; flow rate Q ₂ , and in the third pneumatic cylinder, the rod of which is located above the third part of the lid, air is supplied with a flow rate of Q ₃ , with Q ₁ > Q ₂ > Q ₃ , and then after a predetermined time sufficient to close the container with a lid around the entire perimeter of the lid and removal excess air from under it, the supply of compressed air to the upper parts of the pneumatic cylinders is stopped, and the mentioned pistons are returned to their original position. 2. A device for closing the container with a lid, comprising a table for arranging the container, three pneumatic cylinders mounted vertically in the same plane above the table, so that the second pneumatic cylinder is located between the first and third pneumatic cylinders, and at least the first and third pneumatic cylinders are perpendicular to these at the lower ends of the rods thrust plates are installed for the rods, designed for force acting on the container, a control unit for pneumatic cylinders made with the possibility of cyclic and synchronous supply of compressed air in the stump motsilindry and Unidirectional defining airflows when fed into the upper part of cylinders and having nominal sizes of flow areas D ₁ - for the first pnevmotsilidra, D ₂ - the second pneumatic cylinder and D ₃ - for the third air cylinder, wherein D _1> D ₂ > D ₃ .

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