Manufacturing device and manufacturing method for resin-coated tank

Abstract

The present invention addresses the problem of providing an apparatus and a method for manufacturing a resin-coated tank, capable of uniformly cutting a resin film when trimming a pressed resin-coated tank. A manufacturing device for a resin-coated tank and a manufacturing method for a resin-coated tank, the manufacturing device for a resin-coated tank being provided with a press, a dresser, and a chute connecting the press and the dresser, the manufacturing device for a resin-coated tank having a cooling device, and a cooling device for cooling at least the portion of the resin-coated tank that has been trimmed by the trimmer while passing through the chute, the method for manufacturing a resin-coated tank, which conveys the resin-coated tank processed by the press to the trimmer through the chute, is characterized by having a cooling step for cooling the resin-coated tank that has been trimmed by the trimmer while passing through the chute, the cooling step for cooling the resin-coated tank that has been trimmed by the trimmer, and the cooling step for cooling the resin-coated tank that has been trimmed by the trimmer while passing through the chute. And a cooling step in which at least the portion of the resin-coated tank, which is trimmed by the trimmer, is cooled while passing through the chute.

Description

Technical Field

[0001] The present invention relates to a manufacturing device and a manufacturing method of a resin coated can, and in particular to a device and a method for cooling a resin coated can formed by a punching machine. Background Art

[0002] Conventionally, in the manufacture of resin coated tanks using a punching machine, after the resin coated tanks are subjected to drawing and / or drawing ironing, the edges of the openings of the resin coated tanks are trimmed by a trimmer. (See Patent Document 1( Figure 1 )、Patent Document 2( Figure 1 )) Prior Art Literature

[0003] Patent Literature

[0004] Patent Document 1: Japanese Patent Application Publication No. 2007-296565

[0005] Patent Document 2: Japanese Patent Application Publication No. 2009-178771 Summary of the invention

[0006] Problems to be solved by the invention

[0007] When the resin coated can is subjected to drawing and / or ironing by a press machine, the temperature of the resin coated can rises to about 100° C. due to the heat of molding. This temperature rise also affects the resin film of the resin coated can, causing the resin film to soften.

[0008] For example, when a resin film is formed using PET resin, the glass transition temperature (TG point) of the PET resin is approximately 70°C. If the temperature of the resin-coated can that has risen to 100°C is not lowered to a temperature below 70°C before being trimmed by a trimmer, when the resin film that has softened above the glass transition temperature is cut together with the metal can by the trimmer, the resin film will extend to the edge of the opening of the resin-coated can, causing the edge of the resin film to become uneven after cutting.

[0009] An object of the present invention is to provide a manufacturing apparatus and a manufacturing method for a resin coated can, which can evenly cut a resin film when trimming a pressed resin coated can.

[0010] Solutions for solving problems

[0011] In order to solve the above-mentioned problems, the manufacturing apparatus of the resin coated tank of the present invention has the following configuration.

[0012] A manufacturing device for a resin-coated tank, characterized in that it comprises a punch, a trimmer, and a chute connecting the punch and the trimmer, wherein the manufacturing device for the resin-coated tank comprises a cooling device for cooling at least a portion of the resin-coated tank that is trimmed by the trimmer while the resin-coated tank passes through the chute.

[0013] Furthermore, the method for producing a resin coated tank of the present invention has the following configuration.

[0014] A method for manufacturing a resin-coated tank, wherein the resin-coated tank processed by a punch is transported to a trimmer via a chute. The method for manufacturing the resin-coated tank is characterized in that it has a cooling step, in which at least the portion of the resin-coated tank that is trimmed by the trimmer is cooled while the resin-coated tank passes through the chute.

[0015] Effects of the Invention

[0016] The present invention can evenly cut the resin film and reduce the number of defective cans by cooling the resin coated can that has been subjected to a drawing process and / or a drawing ironing process by a press machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a perspective view for explaining a manufacturing apparatus 1 for a resin coated tank according to an embodiment of the present invention.

[0018] Figure 2 It is a perspective view of a resin-coated can manufacturing apparatus 1 according to an embodiment of the present invention, with a partial cover opened.

[0019] Figure 3 It is a front view of the manufacturing apparatus 1 of the resin coated can according to the embodiment of the present invention, with a part of the cover opened.

[0020] Figure 4 yes Figure 3 An enlarged view of the vicinity of chute 3.

[0021] Figure 5 This is a diagram for explaining the air nozzle 63 of the manufacturing apparatus 1 for a resin coated tank according to the embodiment of the present invention. DETAILED DESCRIPTION

[0022] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, the same reference numerals in different drawings represent parts with the same functions, and repeated descriptions in the drawings will be appropriately omitted.

[0023] [Implementation Method]

[0024] Hereinafter, the resin-coated can manufactured by deep drawing and / or deep ironing using a punching machine in this embodiment is a type of can mainly used for beverage cans, etc., and is formed by using a body maker as a punching machine to form an intermediate processed product formed into a cup shape into a can by deep ironing.

[0025] [Overall composition]

[0026] Figure 1 This is a perspective view for explaining a manufacturing apparatus 1 for a resin coated tank according to an embodiment of the present invention.

[0027] The manufacturing device 1 includes a can body manufacturing machine 2 , a chute 3 , and a trimmer 4 .

[0028] In the can body manufacturing machine 2, the intermediate processed product formed into a cup shape is subjected to drawing and ironing processing by a punch and a plurality of dies, and finally the shape of the can bottom is processed to form the can body 5. The processing in the can body manufacturing machine 2 may be drawing processing or a combination of drawing processing and drawing ironing processing.

[0029] The formed can body 5 is transported to the trimmer 4 through the chute 3 .

[0030] In the trimmer 4, the edge 511 of the opening 51 of the can body 5 formed in the can body manufacturing machine 2 is cut with a knife to perform trimming.

[0031] [Chute]

[0032] Figure 2 1 is a perspective view of a resin-coated can manufacturing apparatus 1 according to an embodiment of the present invention, with a partial cover opened. Figure 3 1 is a front view of a resin-coated tank manufacturing apparatus 1 according to an embodiment of the present invention, with a partially opened cover. Figure 4 yes Figure 3 An enlarged view of the vicinity of chute 3.

[0033] The can body 5 formed in the can body manufacturing machine 2 is carried out from the can body manufacturing machine 2 by the unloader 21 of the can body manufacturing machine 2. In the unloader 21, the formed can body 5 is transferred upward by the unloader bag 211.

[0034] The chute 3 transports the can body 5 unloaded from the unloader 21 of the can body manufacturing machine 2 to the trimmer 4, and as its transport path, there is a flow path 32 that is roughly S-shaped when viewed from the side, connecting the upper inlet 33 and the lower outlet 34 inside the chute box 31 as a shell.

[0035] The flow path 32 is composed of a plurality of rails 321 formed in a substantially S-shape when viewed from the side.

[0036] The can bodies 5 from the unloader outlet 212 of the can body manufacturing machine 2 flow into the inlet 33 , flow down while turning between the plurality of rails 321 , and are conveyed from the outlet 34 to the trimmer inlet 41 .

[0037] It should be noted that the rail 321 is preferably formed of a metal with high thermal conductivity, and a heat dissipation unit such as a heat sink for dissipating heat conducted from the can body 5 to the rail 321 may be provided.

[0038] [Cooling device (air duct)]

[0039] The chute 3 is provided with a cooling device 6 for cooling the tank body 5 in the chute box 31 .

[0040] As one of the cooling devices 6 , an air duct 61 for supplying cooling air into the chute box 31 is disposed.

[0041] The end 611 of one side of the air duct 61 is connected to the blower 62, and the end 612 of the other side is connected to the air inlet 35 of the upper part of the chute box 31, and the air is blown into the chute box 31 from the air inlet 35. It should be noted that the end 612 of the other side of the air duct 61 may not be connected to the upper part of the chute box 31, but may be connected to any part such as the lower part of the chute box 31. A filter is provided at the air inlet of the blower 62 to prevent foreign matter from entering the chute box 31.

[0042] Furthermore, the chute box 31 is provided with an exhaust port (not shown) for exhausting air from the chute box 31 so that the air introduced from the air duct 61 flows smoothly in the chute box 31. Furthermore, a forced exhaust device such as an exhaust fan may be provided at the exhaust port.

[0043] Furthermore, a rectifying plate or the like for controlling the flow of air may be provided in the chute box 31 so that the air introduced from the air duct 61 can efficiently cool the tank body 5 .

[0044] It should be noted that the shape of the flow path 32 is not limited to a roughly S-shape when viewed from the side, but can also be bent into other shapes as long as the design is considered taking into account the flow path length required for cooling, the size and shape of the chute box 31, the flow of air in the chute box 31, etc.

[0045] The air introduced into the chute box 31 is directly introduced from the air around the manufacturing device 1, but it is also possible to introduce air whose temperature has been lowered by an air conditioning device. In addition, the introduced air may also contain ozone, ions, etc. for purifying the tank 5, the track 321, etc. In addition, instead of introducing the air around the manufacturing device 1, it is also possible to introduce air from any place such as the air outside the building where the manufacturing device 1 is installed.

[0046] As described above, the air introduced into the chute box 31 through the air duct 61 is passed through the flow path 32 of the tank body 5, including the portion cut by the trimmer 4 (the trimming portion: the trimming portion cut by the trimmer 4). Figure 5 The tank body 5 (the portion indicated by the black band indicated by the arrow in (c)) is cooled as a whole, and the temperature of the tank body 5 decreases while passing through the flow path 32 in the chute box 31.

[0047] [Cooling device (air nozzle)]

[0048] Figure 5 1 is a diagram for explaining the air nozzle 63 of the manufacturing apparatus 1 for a resin coated tank according to an embodiment of the present invention. Figure 5 (a) and Figure 5 (b) is a stereogram, Figure 5 (c) is a diagram for explaining cooling by the air nozzle 63.

[0049] An air nozzle 63 is provided in the chute box 31 as one of the cooling devices 6 .

[0050] The air nozzle 63 is arranged at the most downstream of the flow path 32. It should be noted that the arrangement of the air nozzle 63 is not limited to the most downstream of the flow path 32, and the design can be made by considering the arrangement and shape of the flow path in the chute box 31, the size and shape of the chute box 31, the flow of air in the chute box 31, etc.

[0051] The air nozzle 63 is a slit-shaped nozzle, and is arranged so that the long dimension direction of the slit-shaped air nozzle 63 is along the direction in which the tank body 5 rotates ( Figure 5 (b) in the direction of the arrow.

[0052] The air nozzle 63 is provided at a position where air is blown in a slit shape toward the portion cut by the trimmer 4 near the edge portion 511 of the opening 51 of the can body 5 .

[0053] The length of the air nozzle 63 in the longitudinal direction is approximately the same as the circumference of the can body 5. Thus, the vicinity of the edge 511 of the can body 5 rotating between the plurality of rails 321 can be cooled over the entire circumference. Figure 5 As shown in (b), it can be seen that during the rotation of the tank body 5 along the long dimension direction of the air nozzle 63, the tank body 5 rotates one circle.) It should be noted that the length of the long dimension direction of the air nozzle 63 only needs to be greater than the circumference of the tank body of the tank body 5.

[0054] The air nozzle 63 can intensively and efficiently cool the portion of the can body 5 near the opening 51 cut by the trimmer 4 .

[0055] The air nozzle 63 is also supplied with air by a blower (not shown) in the same manner as the air duct 61. The air is also introduced from the air around the manufacturing device 1 via a filter, etc., but air whose temperature has been lowered by an air conditioning device, etc. may also be introduced. Moreover, the introduced air may also contain ozone, ions, etc. for purifying the tank 5, the track 321, etc. In addition, instead of introducing the air around the manufacturing device 1, the air from any place such as the air outside the building where the manufacturing device 1 is installed may be introduced. In addition, high-pressure air compressed by a compressor may also be introduced.

[0056] [Cooling process]

[0057] The method for manufacturing a resin coated can includes a cooling step in which the can body 5 and at least the portion cut by the trimmer 4 are cooled.

[0058] The can body 5 is cooled by air introduced from the air duct 61 while flowing down the chute 3, and finally, the portion cut by the trimmer 4 is concentratedly cooled by the air nozzle 63 and cooled to a predetermined temperature, for example, when the resin film is formed of PET resin, to 60° C. or less, more preferably to 50° C. or less. The predetermined temperature is appropriately set in consideration of the glass transition temperature of the resin used.

[0059] Furthermore, the temperature of the can body 5, in particular the temperature of the portion of the can body 5 cut by the trimmer 4, may be measured, and the cooling device 6 may be controlled so that the measured value becomes a predetermined temperature. The temperature of the can body 5 while flowing down the flow path 32 may be measured by an infrared thermometer or the like, and the operation of the blower 62 may be controlled so that the measured value becomes a predetermined temperature, thereby increasing or decreasing the amount of air introduced through the air duct 61, or increasing or decreasing the amount of air blown out from the air nozzle 63, thereby optimizing the cooling amount.

[0060] It should be noted that when using air whose temperature has been lowered by an air conditioner or the like as cooling air, the air conditioner can be controlled to adjust the temperature of the air introduced by the air duct 61 and the temperature of the air blown out by the air nozzle 63 to optimize the cooling amount.

[0061] [Modifications]

[0062] In the chute 3 of the present embodiment, the air duct 61 and the air nozzle 63 are provided as the cooling device 6, but only one of them may be provided.

[0063] In addition, in this embodiment, although the cooling device using air is described as an example, the cooling device is not limited to this.

[0064] For example, it can be considered that: like a refrigerator, a heat exchanger is set in the slide box 31 to cool the entire slide box 31; the track 321 is set to a tubular shape, and the refrigerant passes through the track 321 to cool the track 321; the tank body 5 is cooled by making the tank body 5 contact with the cooled track 321, etc.

[0065] Furthermore, instead of using cooling methods such as air and refrigerant, a structure in which the flow path 32 is lengthened may be adopted so that at least the portion of the can body 5 cut by the trimmer 4 can be sufficiently cooled while passing through the flow path 32 .

[0066] Although the embodiments of the present invention have been described in detail with reference to the drawings, the specific configuration is not limited to these embodiments, and design changes and the like within the scope not departing from the gist of the present invention are also included in the present invention.

[0067] Furthermore, the above-mentioned embodiments may be combined by using the mutual techniques as long as there are no particular contradictions or problems in their purposes, structures, etc.

[0068] Description of Reference Numerals

[0069] 1: Manufacturing device;

[0070] 2: Can body making machine;

[0071] 21: Unloader;

[0072] 211: Unloading bags;

[0073] 212: discharge outlet of unloader;

[0074] 3: chute;

[0075] 31: chute box;

[0076] 32: Flow path;

[0077] 321: track;

[0078] 33: inflow;

[0079] 34: outflow;

[0080] 35: air inlet;

[0081] 4: Dresser;

[0082] 41: Dresser entrance;

[0083] 5: Tank body;

[0084] 51: opening;

[0085] 511: edge;

[0086] 6: Cooling device;

[0087] 61: Air duct;

[0088] 611: The end of one party;

[0089] 612: The other end;

[0090] 62: Blower;

[0091] 63: Air nozzle.

Claims

1. A manufacturing device for a resin coated tank, characterized in that: A punching machine, a trimmer, and a slide connecting the punching machine and the trimmer are provided. The manufacturing apparatus of the resin coated pot comprises a cooling device for cooling at least a portion of the resin coated pot trimmed by the trimmer while the pot passes through the chute.

2. The manufacturing device of the resin coated tank according to claim 1, characterized in that: The cooling device cools the resin coating tank using air.

3. The manufacturing device of the resin coated tank according to claim 2, characterized in that: The cooling device includes a shell surrounding the chute, and air is blown into the shell by a blower.

4. The manufacturing device of the resin coated tank according to claim 2, characterized in that: The cooling device includes a slit-shaped air nozzle for blowing air toward a portion of the resin coating tank that is trimmed by the trimmer.

5. The manufacturing device of the resin coated tank according to claim 4, characterized in that: The length of the slit-shaped air nozzle is greater than or equal to the circumference of the can body of the resin coated can.

6. The manufacturing device of the resin coated tank according to claim 1, characterized in that: The chute has a tortuous path.

7. The manufacturing device for a resin coated tank according to any one of claims 1 to 6, characterized in that: The punching machine is a can body making machine.

8. A method for manufacturing a resin coated tank, wherein the resin coated tank processed by a punching machine is conveyed to a trimmer through a chute, wherein the resin coated tank is characterized in that: A cooling step is provided in which at least a portion of the resin coated tank trimmed by the trimmer is cooled while the tank passes through the chute.

9. The method for manufacturing a resin coated tank according to claim 8, characterized in that: The cooling step is a step of cooling the resin coating tank with air.

10. The method for manufacturing a resin coated tank according to claim 9, characterized in that: The cooling step is a step of blowing air into a housing surrounding the chute by a blower.

11. The method for manufacturing a resin coated tank according to claim 9, characterized in that: The cooling step is a step of blowing air through a slit-shaped air nozzle toward the portion of the resin coating can that has been trimmed by the trimmer.

12. The method for manufacturing a resin coated tank according to claim 8, characterized in that: The chute has a tortuous path, and in the cooling step, the resin coating tank is cooled while passing through the tortuous path.

13. The method for manufacturing a resin coated tank according to any one of claims 8 to 12, characterized in that: In the cooling step, the resin coating tank is cooled to a temperature lower than the glass transition temperature of the resin used in the resin coating tank.

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