JPH06555B2 - How to temporarily close the container mouth - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for temporarily closing a container mouth portion that temporarily closes a container mouth portion such as a bottle mouth portion and a can base portion.

(Prior Art) In some cases, it is necessary to temporarily close the container mouth in a series of work steps for handling a large number of containers. For example, in the process of manufacturing a drum can, when painting the outer surface of the drum can, a temporary lid is attached to the base so as to prevent the paint from entering the can.
In addition, as another example, in the food industry and pharmaceutical industry, when transporting a washed bottle to the next process or temporarily storing it, put a temporary lid on the bottle to prevent dust and foreign matter from entering the bottle. There is. These temporary lids are removed after painting or before filling with chemicals.

As a temporary lid, a cap, a cap-shaped cover, or an elastic plug having an elastic portion that fits inside the mouth is widely used. In addition, a sealing tape having an adhesive surface is also used as a temporary lid.

(Problems to be Solved by the Invention) In the above-mentioned conventional temporary lid, since the elastic portion is fitted to the mouth portion, the temporary lid must be brought accurately to the mouth portion, and the temporary lid cannot be attached or removed. It requires considerable power. Therefore, when performing these operations manually, the operator needs to pay sufficient attention and force, and it has been difficult to continue the operations for a long time. In addition, when automating the work of attaching and detaching the temporary lid, a highly accurate positioning mechanism and an actuator having a relatively large output are required, so that the automation device is complicated, large, and expensive.

Furthermore, after the container mouth is temporarily covered, the temperature of the container may become higher or lower, and the pressure in the container may become higher or lower than atmospheric pressure. In such a case, if the temporary lid is a temporary lid having an adhesive surface, the temporary lid may be peeled off from the container opening or pulled into the container due to the pressure difference between the inside and the outside of the container.

Therefore, the present invention is intended to provide a temporary closing method in which the temporary lid can be easily attached to and removed from the container opening, and the temporary lid can be easily positioned in the container opening. Further, the present invention is intended to provide a temporary closing method in which the temporary lid having the adhesive surface is not peeled off from the mouth portion of the container or pulled into the container even if the pressure inside the container is changed. is there.

(Means for Solving Problems) In the method of temporarily closing the container mouth of the present invention, a label-like temporary lid having an adhesive surface covers the container mouth in a series of work steps for handling a large number of containers. Then, it is attached to the end face of the mouth to close the mouth of the container. Then, the adhesive is applied in a striped manner on the adhesive surface of the label-like temporary lid so that the opening of the container opening communicates with the outside air.

The label-like temporary lid is most preferably made of paper, but may be plastic, a thin metal plate, or the like. The adhesive surface is formed by applying an adhesive adhesive used for a usual peelable label, and a temporary lid can be easily attached to the mouth of the container or peeled from the mouth. Further, in order to facilitate the attaching work, it is desirable that the temporary lid be slightly larger than the container mouth portion.

(Operation) When the adhesive surface of the label-like temporary lid is lightly pressed against the end surface of the mouth portion of the container, the temporary lid is attached to the end surface of the mouth portion by the adhesive adhesive.
Further, since the temporary lid does not stick to the end surface of the container mouth but sticks to it, the temporary lid is easily peeled off from the end surface of the container mouth when the temporary lid is pulled.

Further, the adhesive is applied in a striped manner on the adhesive surface of the label-like temporary lid so that the opening of the container mouth communicates with the outside air. Therefore, even if the pressure inside the container becomes higher or lower than the atmospheric pressure, the atmosphere flows through the portion of the adhesive surface where the adhesive is not applied, and the pressure difference between the inside and outside of the container disappears.

(Embodiment) An embodiment of the present invention will be described below by taking as an example a case where a cap portion of a drum can is automatically closed before coating. In addition,
In this embodiment, a method for removing the temporary lid will also be described.

I Temporary Lid Step (1) Rough Positioning of Drum Can FIGS. 1 to 3 show an example of an automatic temporary lid device. FIG. 1 is a side view, FIG. 2 is a plan view and FIG. 3 is a front view. Is.

The drum can 1, which has been conveyed to the rough positioning position in the vertical posture on the chain conveyor 11, stops by hitting the stopper / free roll 13 which has been raised by the air cylinder 15 in advance. The front portion of the stopped drum can 1 is supported by the drum can receiving portion 14 of the stopper / three roll 13 as shown in FIG. At the same time, a signal from the drum can detector 17 equipped with an optical sensor is used to output the air cylinder 20.
Is activated to raise the drum receiving free roll 19 to support the rear portion of the drum can 1. Then, the air cylinder 25 is actuated, and the drum can rotation drive roll 22 and the link 2
The driven roll 23 connected via 4 closes, and the drum 2 is pinched by both rolls 22 and 23. When the drive roll 22 is rotationally driven by the motor 26 with a brake via the speed reducer 27, the drum can 1 rotates. When the large cap mouthpiece detector 29 equipped with an optical sensor detects the large cap mouthpiece 4 or the small cap mouthpiece detector 3 detects the small cap mouthpiece 5 (in the case of a drum can with only small caps), a motor with a brake The brake of 26 operates to stop the rotation of the drum can 1.

Next, the air cylinder 25 operates to open the drum rotation drive roll 22 and the driven roll 23, and the air cylinder 1
5, 20 actuate, the free roll 13 also serving as the stopper and the free roll 19 for receiving the drum can descend, and the drum can 1
Are carried out by the chain conveyor 11.

(2) Precise Positioning of Drum Can The drum can 1 that has flowed from the rough positioning position hits the free roll 31 that also functions as a stopper and is stopped by the air cylinder 33 and stops. At this time, the rebound preventing stopper 35 works to prevent the drum can 1 from rebounding. That is, the drum can 1 sent by the chain conveyor 11 pushes down the stopper 35 as shown in FIG. When the drum can 1 gets over the stopper 35, the stopper 35 is pushed up by the force of the spring 36 as shown in FIG. 5 (b) and hits the stopper / free roll 31 to rebound.
The drum tightening unit 3 is received to stop the drum can 1. When the drum can 1 is stopped, the air cylinder 40 is activated by a signal from the drum can detector 37 having an optical sensor, and the drum receiving free roll 39 is raised.

Next, the air cylinder 43 operates and the positioning arm 4
2 moves down, the air cylinder 44 operates, the positioning arm 42 closes and the mouthpieces 4 and 5 are sandwiched, and the drum can 1 is positioned in the drum advancing direction. At the same time, as shown in FIG. 6, the air cylinder 46 operates and the positional deviation preventing brake plate 45 sandwiches the drum can 1. In addition, the arm lowering air cylinder 43 has a two-step stroke in order to correspond to a general can and an open can. It is short for general cans and long for open cans.

Then, the positioning arm 42 is opened and lifted to the standby position. At this time, the positional deviation preventing brake plate 45 is in a state of sandwiching the drum can 1.

(3) Temporary lid pasting When the precise positioning is completed as described above, the two temporary lid pasting devices 49 are activated, and the end faces of the large cap mouthpiece 4 and the small cap mouthpiece 5 are slightly larger than the circular shape. The paper-made temporary lid 7 is attached. The temporary lid 7 has a label shape, and one surface thereof is an adhesive surface coated with an adhesive adhesive.

FIG. 7 shows a temporary lid pasting device 49, which is a normal labeling machine. The temporary lid 7 is attached to the roll-shaped mount 9 at regular intervals, and together with the mount 9 is supplied from the reel 50 through the guide roll 51 to the peel plate 53. Here, the vacuum grid 54 that moves up and down by the air cylinder 55 is the temporary lid 7.
1 is sucked and lowered, and the temporary lid 7 is lightly pressed against the end faces of the mouthpieces 4 and 5.

Then, the vacuum grid 54 rises, the position shift prevention brake 45 opens, and the stopper / free roll 3
1 and the drum can receiving free roll 39 are lowered, and the drum can 1 is carried out to the chain conveyor 11.

Drum can 1 with a temporary lid 7 attached to the end faces of the mouthpieces 4 and 5.
Passes under the press roll 58 shown in FIG. The force of the spring 59 causes the press roll 58 to move the base 4,
The temporary lid 7 is lightly pressed against the end surfaces of the caps 5 to bring the temporary lids 7 into close contact with the end surfaces of the caps 4 and 5.

The temporary lid 7 has a striped adhesive surface 8 coated with an adhesive as shown in FIG. 9 (a). This is because when the temporary lid 7 is attached to the drum can 1 and the adhesive adhesive is present on the entire surface, the drum can 1 is completely sealed. Then, when the temperature of the can is high when the temporary lid is attached and the temperature gradually decreases (between the attachment and the coating machine and the drying oven),
The inside of the can becomes a vacuum and tries to pull the temporary lid 7 into the base. Also, the same phenomenon occurs after leaving the drying furnace. However, when the adhesive surface 8 has a striped shape as described above, when the inside of the die starts to be pulled by the vacuum,
A portion other than the adhesive surface 8 is easily peeled off, and a gap g is formed between the mouthpieces 4, 5 and the temporary lid 7 as shown in FIG. 9 (b). As a result, the outside air is drawn into the drum and the temporary lid 7
Is not pulled inside the base.

II Temporary Lid Removal Step (1) Rough Positioning of Drum Can FIGS. 10, 11 and 12 show an example of an automatic temporary lid device. FIG. 10 is a front view, FIG. 11 is a side view and FIG. FIG. 12 is a plan view.

The drum 1 that has been conveyed vertically on the tee conveyor 11 hits the stopper 61 that has been raised in advance by the operation of the air cylinder 62 and stops. The positions of the mouthpieces 4 and 5 of the drum can flow in a varied state.

At that time, the air cylinder 69 is actuated by a signal from the drum can detector 63, which is an optical sensor, and the lifter 64 provided with the drum receiving free roll 65 and the drum rotation drive roll 66 rises as shown in FIG. When it rises, the air cylinder 67 operates to close the drum rotation drive roll 66 to press the drum can 1, and the motor 68 with a brake operates to rotate the drum can 1. When the mouthpiece detector 71 formed of a touch sensor detects the large mouthpiece mouthpiece 4,
The brake of the motor 68 with a brake works to stop the rotation of the drum 1 at a position within a certain allowable range. Then, the stopper 61 and the lifter 64 descend, and the drum can 1 is carried out.

(2) Precise positioning of drum can The drum can 1 sent from the rough positioning device has the stopper 73 that has been raised in advance by the operation of the air cylinder 74.
To stop. At that time, an air cylinder 78 is activated by a signal from a drum can detector 76 having an optical sensor, and a lifter 77 having a drum receiving free roll 79 is raised to lift the drum can 1 from the chain conveyor 11. Then, the air cylinder 84 is actuated to close the drum rotation drive roll 80 and the driven roll 3,
0, 83 presses the drum can 1. Then, the brake motor 81 is driven to rotate the drum can 1. When the mouthpiece detector 87 including an optical sensor detects the mouthpiece 5 for a small stopper, the brake of the motor 81 with a brake operates and stops at a fixed position (almost directly below the position of the suction cup 89).

The drum can 1 was rotated at a rotation speed of 60 rpm in the rough positioning in order to stop the cap 4 for the large stopper at a predetermined position, but the rotation speed is 15 rpm here.

(3) Removal of temporary lid A. Sucker system (when the temporary lid is adhered to the mouthpiece with a strong adhesive force) A vacuum pump 91 is attached to the suction cup 89 via a suction valve solenoid valve 92.
Are connected, and the vacuum pump 91 is constantly operated. The suction cup 89 has a large number of small holes 90, as shown in FIG. 14, through which air is sucked. A temporary lid suction device 94 is arranged adjacent to the suction cup 89.

As shown in FIG. 15, in the temporary lid suction device 94, a nozzle 96 is opened in a diffuser 95, and the nozzle 96 is connected to an air compressor 97 via a suction device electromagnetic valve 98.

As described above, when the suction cup 89 is lowered by the air cylinder 93 toward the large cap mouthpiece 4 and the small stopper mouthpiece 5 which are stopped immediately below the suction cup 89, the suction cup solenoid valve 92 is opened, and the suction cup 89 is temporarily covered. Aspirate 7 and go up. When the suction cup 89 that has sucked the temporary lid 7 has finished rising, the suction cup solenoid valve 92 closes and the suction device solenoid valve 98 opens. When the suction electromagnetic valve 92 is closed, the suction cup 89 stops suction and drops the temporary lid 7. If the temporary lid 7 does not drop from the suction cup 89 successfully, air is sent into the suction cup. The temporary lid suction device 94 sucks the falling temporary lid 7 and sends it to the temporary lid recovery basket 101. Then, the stopper 73 and the lifter 77 descend,
The drum 1 is advanced.

B. Direct suction method (when the temporary lid is adhered to the mouthpiece with a weak adhesive force) When the drum can 1 sent from the rough positioning device comes directly below the temporary lid suction device 99, the drum can detector 106 composed of an optical sensor detects it. Signal causes the suction cup 89 and the temporary lid suction device 94 to operate in the same manner as described above, sucking the temporary lids 7 of the large cap mouthpiece 4 and the small cap mouthpiece 5 in the flow and collecting the basket 10
Send to 1.

(Effect of the Invention) In the temporary lid method of the present invention, the temporary lid can be attached to the end surface of the mouth by simply pressing the adhesive surface of the temporary lid-shaped temporary lid against the end surface of the container mouth. Further, when the temporary lid is pulled, the temporary lid is easily peeled off from the end surface of the container opening. Therefore, a large force is not required for attaching and detaching the temporary lid, and it is not necessary to position the temporary lid with respect to the container opening portion with high accuracy. The positioning is further simplified by making the size of the temporary lid slightly larger than that of the container opening. For these reasons, when automating the work of attaching and removing the temporary lid, the device has a simple structure, and the cost can be reduced.

Further, in the temporary closing method of the present invention, even if the pressure inside the container becomes higher or lower than the atmospheric pressure, the air flows through the part of the adhesive surface where the adhesive is not applied, and the pressure difference inside and outside the container Disappears. Therefore, the temporary lid is not peeled off from the container opening or pulled into the container due to the pressure difference between the inside and the outside of the container. Furthermore, in the temporary lid method of the present invention, since the adhesive is applied in a striped manner on the adhesive surface of the temporary lid, a ventilation passage is formed between the label-like temporary lid and the container mouth, and Since the ventilation passage is formed at the same time when the lid is attached, the formation of the ventilation passage is extremely easy.

[Brief description of drawings]

1 to 3 show an example of an automatic temporary lid device,
1 is a side view, FIG. 2 is a plan view and FIG. 3 is a front view, FIG. 4 is a view for explaining the positioning of a drum can in the above apparatus, and FIG. 5 is a side view of a rebound preventing stopper.
FIG. 6 is a side view of the position shift preventing brake, FIG. 7 is a side view of the temporary lid attaching device, FIG. 8 is a side view of the press roll, and FIG. 9 (a) is a bottom view of the temporary lid. FIG. (B) is an explanatory view of a gap formed between the mouthpiece and the temporary lid, and FIGS. 10, 11, and 12 show an example of the automatic temporary lid device.
The drawing is a front view, FIG. 11 is a side view and FIG. 12 is a plan view, FIG. 13 is an explanatory view of positioning of a drum can, FIG. 14 is a bottom view of a suction cup, and FIG. 15 is one of a temporary lid suction device. FIG. DESCRIPTION OF SYMBOLS 1 ... Drum can, 4, 5 ... Clasp, 7 ... Temporary lid, 11 ... Chain conveyor, 13 ... Free roll also serving as a stopper, 19 ...
Drum can receiving free roll, 22 ... Drum can rotating drive roll, 31 ... Free roll also serving as stopper, 35 ... Bounce preventing stopper, 39 ... Drum can receiving free roll, 42 ...
Positioning arm, 45 ... Brake for preventing displacement, 49
... Temporary lid pasting device, 61 ... Stopper, 64 ... Lifter, 6
5 ... Drum can receiving free roll, 66 ... Drum can rotating drive roll, 73 ... Stopper, 77 ... Lifter, 79 ... Drum can receiving free roll, 80 ... Drum can rotating drive roll, 8
9 ... Sucker, 94 ... Temporary lid suction device, 101 ... Temporary lid collection basket.

Claims (1)

[Claims] 1. A series of working steps for handling a large number of containers,
A method of temporarily attaching the label-like temporary lid having an adhesive surface to the end face of the container so as to cover the mouth of the container and temporarily closing the mouth of the container, so that the opening of the container mouth communicates with the outside air A method for temporarily closing a container mouth, wherein an adhesive is applied in a striped manner on the adhesive surface of the temporary lid.