JP2010094642A - Method and apparatus of removing droplets from can container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a method and apparatus of removing droplets from a can container, which removes by air-blowing moisture attached to the outer surface of the can container in a hot water leak test, in addition, evaporative-removes completely by vacuum drying the moisture invading (attaching) into a bead part which is difficult to be removed only by air-blowing, by which occurrences of rusts which the remaining moisture which cannot be removed causes can be prevented and the can container of a higher quality can be provided. <P>SOLUTION: The method includes a sorbing process of allowing a vacuum pad 54 to sorb to an opening 51 so as to cover the bead part 52 of the opening 51 in the can container 50, and an evaporative removal process of the moisture invading into the bead part 52, which evaporates and removes by vacuum drying the moisture invading into the bead part 52 reducing the pressure with a vacuum pump 56 connected to the vacuum pad 54. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a water droplet removal method and apparatus for a can container that removes water droplets adhering to the outer surface of a can container in which gas is enclosed in a can such as an aerosol can or a fuel can such as cosmetics and insecticides. The present invention relates to a method and apparatus for removing water droplets from a can container that removes water that has entered a bead portion provided at the mouth of the can container during a leak inspection of the can container.

As shown in FIG. 13, an aerosol can such as cosmetics and insecticides, and a can container 100 such as a fuel can are formed by caulking an injection valve portion 102 to a bead portion (curl portion) 101 formed in an opening portion thereof. The container 100 is filled with a filling liquid and a gas as a propellant. Then, in the manufacturing process of the can container 100, as shown in FIG. 14 after the filling process, the can container 100 is passed through the hot water tank 104 while being transported by the magnet conveyor 103 to check the airtightness of the can container 100 (warm water). Leakage inspection), and then, using a compressor or the like, compressed air is sprayed toward the can container 100 (not shown) to remove water droplets (moisture) adhering to the outer surface of the can container 100 (for example, patents) References 1 to 3).
JP 2000-310579 A JP 2004-1902 A JP 2005-315698 A

  However, the conventional manufacturing process of the can container 100 has the following problems. That is, since the bead part 101 of the can container 100 is a closed space as shown in FIG. 13, it is difficult to sufficiently remove moisture (water droplets) that has entered the bead part 101 by air blow alone. As a result, there is a problem that rust is generated in the bead portion 101 while the can container 100 is distributed in the market due to moisture that cannot be removed.

  The present invention has been made in view of the above-described problems of the prior art, and in addition to removing water adhering to the outer surface of the can container by air blow in the hot water leakage inspection, it can be removed by air blow alone. Moisture that has penetrated (adhered) into the bead portion that has not been removed by evaporation is removed by vacuum drying, so that moisture adhering to the outer surface of the can container can be completely removed in the hot water leak test. An object of the present invention is to provide a method and an apparatus for removing water droplets from a can container, which can prevent the generation of rust and provide a higher quality can container.

  The present invention relates to a method for removing water droplets in a can container having a bead portion formed in an opening, and an adsorption step of adsorbing a vacuum pad to the opening so as to cover the bead portion of the opening of the can container And a bead part intruding moisture evaporating and removing step of evaporating and removing the water intruding into the bead part by vacuum drying by reducing the pressure with a vacuum pump connected to the vacuum pad. A method for removing water droplets is provided.

  Further, the method for removing water droplets from the can container further includes an air blow moisture removing step for removing moisture attached to the outer surface of the can container by air blowing, and the adsorption step and the bead portion intruding moisture evaporation removing step include the air blow moisture. It can be performed after the removal step. Further, the water droplet removing method for the can container can be performed on the can container having moisture adhered to the outer surface during the leak inspection of the can container.

  Further, the present invention is a method for removing water droplets in a can container, wherein the at least one can container is housed in a sealed container, and the pressure is reduced by a vacuum pump connected to the sealed container, There is provided a method for removing water droplets from a can container, comprising a step of evaporating and removing water adhering to the outer surface of the can container accommodated in the hermetic container.

  Further, the method for removing water droplets from the can container further includes an air blow moisture removing step for removing moisture adhering to the outer surface of the can container by air blowing, and the housing step and the outer surface attached moisture evaporation removing step include the air blow moisture removal step. It can be performed after the process. Further, the water droplet removing method for the can container can be performed on the can container having moisture adhered to the outer surface during the leak inspection of the can container.

  Further, the present invention is a water drop removing device for a can container that removes moisture that has entered the bead part of the can container having a bead part formed in the opening part, wherein the opening part is covered so as to cover the bead part. A water droplet removing device for a can container, comprising: a vacuum pad to be adsorbed; a vacuum pump connected to the vacuum pad; and an electromagnetic valve disposed between the vacuum pad and the vacuum pump. I will provide a.

  Further, the present invention is a water drop removing device for a can container that removes water adhering to the outer surface of the can container, and is connected to the sealed container for containing at least one of the can containers, and the sealed container There is provided a water droplet removing apparatus for a can container, comprising: a vacuum pump that is configured, and an electromagnetic valve disposed between the hermetic container and the vacuum pump.

  According to the first aspect of the present invention, the moisture adhering to (being attached to) the bead portion that cannot be removed by air blow alone is evaporated and removed by vacuum drying. Thus, the generation of rust caused by residual moisture that could not be removed is prevented, and a higher quality can container can be provided.

  According to the third aspect of the invention, not only the water adhering to the outer surface of the can container but also the water entering (adhering) into the bead portion that cannot be removed by air blow alone is removed by evaporation, for example, The water droplet removal method for high-quality can containers can be achieved by completely removing the water adhering to the outer surface of the can container in the hot water leak inspection, thus preventing the occurrence of rust caused by residual moisture that could not be removed. Can be provided.

  According to the invention of claim 6, not only the water adhering to the outer surface of the can container but also the water entering (adhering) into the bead portion that cannot be removed by air blow alone is removed by evaporation by vacuum drying, for example, , Removes water adhering to the outer surface of the can container completely in the hot water leak inspection, thus preventing the occurrence of rust caused by residual moisture that could not be removed, and a higher quality water drop removing device for can containers Can be provided.

  The best mode for carrying out the method and apparatus for removing water droplets from a can according to the present invention will be described below with reference to the drawings. 1 and 2 show a water drop removing device for a can container that removes moisture that has entered the bead part of a can container having a bead part formed in an opening. As described in the section of the prior art, an aerosol can such as cosmetics and insecticides, and a can container 50 such as a fuel can, the injection valve portion 53 is caulked to a bead portion (curl portion) 52 formed in the opening 51 thereof. The container 50 is filled with a filling liquid and a gas as a propellant. The water droplet removal apparatus 1 includes a vacuum pad 54 that is adsorbed to the opening 53 so as to cover the bead portion 52, a vacuum pump 56 that is connected to the vacuum pad 54 via a pipe 55, and a vacuum pad 54 and a vacuum pump 56. And an electromagnetic valve (for example, a solenoid valve) 57 disposed between the two.

  The water droplet removing method of the water droplet removing apparatus 1 can be performed on the can container 50 with moisture attached to the outer surface. For example, the moisture adheres to the outer surface during the leak inspection of the can container 50 as shown in FIG. This is performed on the can container 50 made. First, the water adhering to the outer surface of the can container 50 that has been subjected to the leakage inspection is removed by air blow (air blow moisture removal step). By this air blow moisture removal step, moisture attached to the outer surface of the can container 50 is removed. After the air blow moisture removal step, the vacuum pad 54 is adsorbed to the opening 51 so as to cover the bead portion 52 of the opening 51 of the can container 50 (adsorption step). Then, the pressure is reduced by the vacuum pump 56 connected to the vacuum pad 54, and the moisture that has entered the bead portion 52 is removed by evaporation by vacuum drying (bead portion entering moisture evaporation removing step). By the adsorption process and the bead part intruding moisture evaporation removing process performed after the air blow moisture removing process, the moisture that has entered (attached) to the bead part 52 that cannot be removed by air blowing in the air blowing moisture removing process is also removed by evaporation by vacuum drying. It is possible to completely remove moisture adhering to the outer surface of the can container 50, thereby preventing the occurrence of rust caused by residual moisture that could not be removed, and providing a higher quality can container Can do. In addition, after the bead portion intruding water evaporation removing step, the vacuum pad 54 that is vacuum-ruptured by the electromagnetic valve 57 and adsorbed to the opening 53 is separated from the opening 53.

  The can container water drop removing device is a can container that passes through a hot water tank for a hot water leak test while the target can container is conveyed by a conveyor as shown in FIG. It can be set as the structure which removes a water droplet sequentially with respect to the can container after the hot water leak test | inspection conveyed by the conveyor. That is, it is possible to continuously remove water droplets from the can container after the hot water leakage inspection on the conveyor line. 3 and 4 show an example.

  In FIG. 3, the code | symbol 2 has shown the conveyor by which the can container 50 after a hot water leak test | inspection is conveyed. The water drop removing device has a turntable 3 rotatably provided on a main body 10 provided near the conveyor 2. On the rotary table 3, a plurality of (e.g., 10 illustrated) lifting / lowering means 4 are attached at regular intervals in the circumferential direction of the rotary table 3, and each lifting / lowering means 4 is connected via an appropriate means. It can be moved up and down. One can container 50 after the hot water leakage inspection is placed one by one on the upper part of each lifting means 4. The main body 10 is provided with a vacuum pad 5 corresponding to each lifting means 4 at a position above each lifting means 4. The vacuum pad 5 can be adsorbed to the opening (see FIG. 1) of the can container so as to cover the bead portion of the can container 50.

  Each vacuum pad 5 is attached to the tip of an arm 6 extending radially outward from the main body 10, and by operating a handle 11 provided on the upper part of the main body 10 or by any other appropriate technique. The main body 10 can be rotated around the main body 10 in synchronization with the rotary table 3 (or the can container lifting / lowering means 4). Each arm 6 is formed with a connecting pipe having one end connected to the vacuum pad 5. Further, a main body connecting pipe in which the other end of the connecting pipe of each arm 6 is connected is formed in the main body, and the main body connecting pipe is connected to a vacuum pump. Therefore, the vacuum pad 5 of each arm 6 is connected to the vacuum pump via the connection pipe and the main body connection pipe.

  In addition, the can container 50 conveyed from the conveyor 2 is guided from the conveyor 2 to the water droplet removing device side by the guide means 7 and is guided from the water droplet removing device to the conveyor 2 side after the water droplet removal. The guide means 7 includes two tooth-shaped guide rollers 8 and a guide portion 9 having a substantially inverted T-shaped cross section disposed between the two tooth-shaped guide rollers 8. Each tooth-shaped guide roller 8 is formed with a plurality of notches 8 a that support the body of the can container 50. Therefore, the can container 50 conveyed by the conveyor 2 is rotated by the guide roller 8 while the trunk portion is supported by the notch portion 8a and the guide portion 9 of the one guide roller 8 (left guide roller in FIG. 3). The can container placed on the lifting / lowering means 4 is cut off by the other guide roller 8 (right-side guide roller in FIG. 3) after the bead portion intruding moisture evaporation removing process described later. While the trunk portion is supported by the notch portion 8 a and the guide portion 9, the guide roller 8 is rotated and returned to the conveyor 2, and is conveyed downstream by the conveyor 2.

  Next, a water droplet removal method will be described. First, the moisture adhering to the outer surface of the can container 50 after the leakage inspection is removed by air blowing by an air blowing means (air blowing moisture removing step). As shown in FIG.7 and FIG.8, this air blow means 20 is arrange | positioned in the upstream rather than the water drop removal apparatus of the conveyor 2 is arrange | positioned, for example. The air blowing means 20 has a plurality of air nozzles 12 arranged at predetermined intervals in the conveying direction on both sides of the conveyor 2. In the illustrated example, a plurality of air nozzles 12 arranged at predetermined intervals in the conveying direction on both sides of the conveyor 2 are arranged at predetermined intervals also in the vertical direction of the can containers 50 conveyed on the conveyor 2. Are arranged in three rows. By the air blowing by the air blowing means 20, the moisture adhering to the outer surface of the can container 50 is removed. As shown in FIG. 9, the air blowing means 20 is configured to direct several of the plurality of air nozzles 12 toward the bead portion of the can container 50 so that the air blow is concentrated on the bead portion of the can container 50. You can also.

  After the air blow moisture removal process, the can container 50 conveyed by the conveyor 2 is guided while the trunk portion is supported by the notch portion 8a and the guide portion 9 of one guide roller 8 (left guide roller in FIG. 3). An adsorption step of placing the vacuum pad 54 on the opening 51 so as to cover the bead portion 52 of the opening 51 of the can container 50 and being placed on the lifting / lowering means 4 by the rotation of the roller 8 and connected to the vacuum pad 54. A bead part intruding moisture evaporating and removing step is performed in which the pressure in the bead part 52 is reduced by the vacuum pump 56 and the moisture intruding into the bead part 52 is evaporated and removed by vacuum drying. These two steps are performed as follows.

  As described above, the plurality of lifting / lowering means 4 can be lifted / lowered through appropriate means. As shown in FIGS. 5 and 6, the can container 50 is placed on the lifting / lowering means 4. When the rotary table 3 and the vacuum pad 5 are rotated 62 degrees from the raised position, the lifting / lowering means 4 starts to rise, and the lifting operation stops at a position rotated 35 degrees from the rising start position, and the opening 51 of the can container 50 is stopped. The vacuum pad 54 is adsorbed on the surface (adsorption process). Then, while rotating 166 degrees from this suction position, the vacuum pressure is reduced by a vacuum pump connected to the vacuum pad 5 via the connection pipe and the main body connection pipe, and the bead is removed by evaporation of moisture that has entered the bead portion by vacuum drying. A partial intrusion moisture evaporation removal step is performed. Then, the elevating means 4 starts to descend from the position where the bead portion intruding moisture evaporation removal process is completed, and the descending operation stops at a position rotated 35 degrees from this descending start position, and then the other guide roller 8 (in FIG. 3). While the trunk portion is supported by the notch portion 8a and the guide portion 9 of the right guide roller), the guide roller 8 is returned to the conveyor 2 by the rotation of the guide roller 8 and is conveyed downstream by the conveyor 2. Thus, the processing cost can be significantly reduced by continuously removing the water droplets in the can container after the hot water leakage inspection on the conveyor line.

  FIG. 10 shows data of experimental results obtained by a conventional drying method, and FIG. 11 shows data of experimental results obtained by implementing the present invention. Each experiment is performed on three can containers. When the experimental result data of FIG. 10 is compared with the experimental result data of FIG. 11, in the conventional experimental result data of FIG. 10, there is a residual amount of water in the can container, but the experiment of the present invention shown in FIG. In the result data, there is no residual moisture in the can. That is, it can be seen that even the moisture that has entered (attached) the bead portion that cannot be removed by air blow alone can be removed by evaporation by vacuum drying, and the moisture attached to the outer surface of the can container is completely removed. In addition, after the adsorption process and the bead portion intruding moisture evaporation removing process, the air blow moisture removing process can be further performed to remove the moisture adhering to the outer surface of the can container.

  In the above-described embodiment, the vacuum pad 54 is adsorbed to the opening 51 so as to cover the bead 52 of the opening 51 of the can container 50 in order to remove moisture that has entered the bead part of the can container (adsorption process). The vacuum pump 56 connected to the vacuum pad 54 is depressurized and the moisture that has entered the bead portion 42 is removed by evaporation by vacuum drying (bead portion entry moisture evaporation removal step). It is also possible to evaporate and remove the whole by vacuum drying. Hereinafter, the embodiment in this case will be described with reference mainly to FIG.

  The water droplet removal device for a can container that removes water adhering to the outer surface of the can container is connected to the hermetic container 30 that houses at least one can container 50 conveyed by the conveyor 31, and to the hermetic container. A vacuum pump (not shown) and an electromagnetic valve (for example, a solenoid valve) disposed between the hermetic container and the vacuum pump are provided. The vacuum pump and the solenoid valve can be configured as in the above embodiment. That is, a sealed container may be connected to a vacuum pump instead of a vacuum pad, and an electromagnetic valve may be installed between the sealed container and the vacuum pump.

  The conveyor 31 shown in FIG. 12 is partially branched, and the hermetically sealed container 30 is disposed between the branched conveyor portions. Further, guide means 32 are respectively provided at the branch portions, and the switching of the conveyance path of the can container 50 is controlled by the guide means 32.

  The water droplet removing method of the water droplet removing apparatus can be performed on the can container 50 with moisture attached to the outer surface. For example, the moisture is attached to the outer surface during a leak inspection of the can container 50 as shown in FIG. To the can container 50. First, the moisture adhering to the outer surface of the can container 50 after the leakage inspection is removed by air blowing by an air blowing means (air blowing moisture removing step). As shown in FIG.7 and FIG.8, this air blowing means 20 is arrange | positioned upstream from the airtight container 30 of the conveyor 31, for example. The air blowing means 20 has a plurality of air nozzles 12 arranged at predetermined intervals in the conveying direction on both sides of the conveyor 2. After the air blow moisture removal step, the can container 50 conveyed by the conveyor 31 is accommodated in the hermetic container 30 (for example, the hermetic container located on the upper side in FIG. 12) arranged in one branch path by the guide means 32. (Accommodation process). Then, the pressure is reduced by a vacuum pump connected to the hermetic container 30, and the moisture adhering to the outer surfaces of the plurality of can containers 50 accommodated in the hermetic container 30 is evaporated and removed by vacuum drying (removal evaporation on the outer surface is removed). Process). By the housing process and the outer surface adhering water evaporation removing process performed after the air blow moisture removing process, even the water that has entered (attached) into the bead portion that cannot be removed by air blowing in the air blow moisture removing process can be evaporated and removed by vacuum drying. It is possible to completely remove the moisture adhering to the outer surface of the can container 50, thereby preventing the occurrence of rust caused by the remaining moisture that could not be removed, and providing a higher quality can container. .

  After the outer surface adhering moisture evaporation removing step, the air is discharged from the hermetic container 30 and conveyed to the downstream side by the conveyor 31 while being guided by the guide means 32 disposed on the downstream side of the hermetic container 30. The thing shown in FIG. 12 can improve processing capacity and efficiency since the conveyor 31 is branched and uses two sealed containers 30. That is, by controlling the switching of the conveyance path of the can container 50 by the guide means 32 so that the processes of the housing process of each hermetic container 30 and the process of evaporating and removing the water adhering to the outer surface are shifted with respect to each other, only one is performed. The processing capacity and efficiency can be increased as compared with the case of using the hermetic container 30. Further, as shown in the figure, the air blow means 20 is provided on the conveyor 31 on the downstream side of the hermetic container 30 and the air blow moisture removal step is further performed after the containment step and the outer surface attached moisture evaporation removal step. By doing so, it is possible to more reliably remove moisture adhering to the outer surface of the can container.

FIG. 1 is a schematic view showing an embodiment of a water droplet removing apparatus for a can container according to the present invention. FIG. 2 is another schematic diagram showing an embodiment of a water droplet removing device for a can container according to the present invention. FIG. 3 is a plan view showing an embodiment of a water droplet removing apparatus for a can container according to the present invention. FIG. 4 is a side view showing an embodiment of a water droplet removing apparatus for a can container according to the present invention. FIG. 5 is an explanatory diagram showing a part of the operation of the above embodiment. FIG. 6 is another explanatory diagram showing a part of the operation of the embodiment. FIG. 7 is a schematic view showing an example of air blowing means applicable to the above embodiment. FIG. 8 is a schematic view showing another example of air blowing means applicable to the above embodiment. FIG. 9 is a schematic view showing still another example of air blowing means applicable to the above embodiment. FIG. 10 is a table showing data of experimental results by a conventional drying method. FIG. 11 is a table showing data of experimental results according to the implementation of the present invention. FIG. 12 is a schematic view showing another embodiment of the water droplet removing apparatus for a can container according to the present invention. FIG. 13 is a partial cross-sectional view showing an example of a can container that can be used in an embodiment of the present invention. FIG. 14 is a schematic diagram illustrating an example of a hot water leakage test.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water drop removal apparatus 2 Conveyor 3 Rotary table 4 Lifting means 5 Vacuum pad 6 Arm 7 Guide means 8 Tooth shape guide roller 8a Notch 9 Guide part 10 Main body part 11 Handle 12 Air nozzle 20 Air blow means 30 Sealed container 31 Conveyor 32 Guide means 50 Can container 51 Opening part 52 Bead part (curl part)
53 Opening 54 Vacuum Pad 55 Piping 56 Vacuum Pump 57 Solenoid Valve 100 Can Container 101 Bead Part (Curl Part)
102 Injection valve section 103 Magnet conveyor 104 Hot water tank

Claims (6)

A method for removing water droplets in a can container having a bead portion formed in an opening,
An adsorption step of adsorbing a vacuum pad to the opening so as to cover the bead portion of the opening of the can container;
Water drop removal from the can container comprising: a bead part intruding moisture evaporating and removing step of evaporating and removing moisture intruding into the bead part by vacuum drying by reducing the pressure with a vacuum pump connected to the vacuum pad Method. The water droplet removal method of the can container further includes an air blow moisture removal step of removing moisture adhering to the outer surface of the can container by air blow, and the adsorption step and the bead portion intruding moisture evaporation removal step are the air blow moisture removal step. The method for removing water droplets from a can according to claim 1, which is performed later. A method for removing water droplets in a can container,
A housing step of housing at least one of the can containers in a sealed container;
A vacuum evaporation connected to the hermetic container, and an outer surface adhering water evaporation removing step for evaporating and removing moisture adhering to the outer surface of the can container accommodated in the hermetic container by vacuum drying. A method for removing water droplets from a can container. The water droplet removal method of the can container further includes an air blow moisture removal step of removing moisture attached to the outer surface of the can container by air blow, and the housing step and the outer surface attached moisture evaporation removal step are performed after the air blow moisture removal step. The method for removing water droplets from a can according to claim 3, wherein the method is performed. A water drop removing device for a can container that removes moisture that has entered the bead part of the can container having a bead part formed in an opening,
A vacuum pad adsorbed to the opening so as to cover the bead part;
A vacuum pump connected to the vacuum pad;
A water droplet removing device for a can container, comprising: a solenoid valve disposed between the vacuum pad and the vacuum pump. A water drop removing device for a can container that removes water adhering to the outer surface of the can container,
A hermetically sealed container that houses at least one of the can containers;
A vacuum pump connected to the sealed container;
A water drop removing device for a can container, comprising: an electromagnetic valve disposed between the hermetic container and the vacuum pump.

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