Heating device and can body manufacturing system

Abstract

To suppress heating of a portion that does not need to be heated in heating of an image formed on a can body.SOLUTION: When a can body 100 is located at a facing position facing a heating source 310, a part of the can body 100 is located at a position deviated from the facing position. Specifically, when the can body 100 is located at the facing position facing the heating source 310, a bottom portion 101 of the can body 100 is located at a position deviated from the facing position facing the heating source 310. An inside of a rectangle indicated by a symbol 5A indicates the facing position facing the heating source 310. When the heating source 310 is viewed from the front as in Fig. 5, the bottom portion 101 of the can body 100 is located outside the rectangle.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a heating device and a can body making system. [Background technology]

[0002] Patent Document 1 discloses a process for manufacturing bottle cans, which includes a printing / overcoating and baking process, an inner surface painting and baking process, a necking process, and a screw processing process. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2005-289381 A Summary of the Invention [Problem to be solved by the invention]

[0004] In a heating device that heats an image formed on a can body, for example, a heat source is provided on the side of the transport path of the can body, whereby the image formed on the can body can be heated. If a heating source is provided, then there is a risk that areas other than the image formed on the can body will be heated, and areas that do not actually require heating will be heated. An object of the present invention is to suppress heating of areas that do not require heating when heating an image formed on a can body. [Means for solving the problem]

[0005] The heating device to which the present invention is applicable comprises a conveying means for conveying a can body on which an image is formed along a conveying path, and a heat source provided on the side of the conveying path and used to heat the image formed on the can body moving along the conveying path, and when the can body is positioned opposite the heat source, a part of the can body is positioned away from the opposite position. Here, the can body may be formed in a cylindrical shape, have a bottom at one end and an opening at the other end, and when the can body is positioned in a position facing the heating source, the bottom of the can body may be positioned at a location away from the facing position. In addition, the can body may be transported along the transport path with the bottom positioned at an upper position and the opening positioned at a lower position, and when the can body is positioned opposite the heat source, the bottom of the can body may be positioned above the upper end of the heat source. In addition, the heating sources may be provided on both one side and the other side of the conveying path, and when the can body is located at a position opposite the one-side heating source, which is the heating source provided on one side, the can body is located at a position opposite the other-side heating source, which is the heating source provided on the other side, and when the can body is located at a position opposite the one-side heating source and at a position opposite the other-side heating source, a part of the can body may be moved out of the position opposite the one-side heating source and out of the position opposite the other-side heating source. In addition, the can body may be formed in a cylindrical shape, have a bottom at one end and an opening at the other end, and when the can body is positioned opposite the one-side heating source and the other-side heating source, the bottom of the can body may be configured to move out of the opposing position of the one-side heating source and out of the opposing position of the other-side heating source. In addition, a plurality of the heating sources may be arranged side by side in the can body transport direction on one side of the transport path, and as the can body passes in sequence between the opposing positions of the plurality of heating sources, the portion of the can body may pass in sequence through locations that are out of the opposing positions. In addition, the can body may be formed in a cylindrical shape, have a bottom at one end in the axial direction of the can body and an opening at the other end in the axial direction, and as the can body passes sequentially through opposing positions of the multiple heating sources, the bottom of the can body may pass sequentially through locations that are away from the opposing positions.

[0006] From another perspective, the heating device to which the present invention is applicable is a heating device that includes a conveying means that uses a moving part to convey a can body on which an image has been formed along a conveying path, and a heat source that is provided to the side of the conveying path and is used to heat the image formed on the can body moving along the conveying path, and is configured so that the moving part passes through a point that is not opposite the heat source. Here, the moving part may be constituted by a member that performs circulating movement, and the moving part that performs circulating movement may pass through a location that is out of the position facing the heat source. In addition, the can body support part may be supported by the moving part that performs a circulating movement and supports the can body, and when the can body is positioned in a position opposite the heating source, a portion of the can body support part may be positioned at a location away from the opposite position. In addition, the can body support portion may be provided with a contact member that is inserted inside the can body and contacts the can body, and a base that supports the contact member, and when the can body is positioned in a position opposite the heat source, the base of the can body support portion may be positioned at a location away from the opposing position.

[0007] Furthermore, when the present invention is considered as a can body manufacturing system, the can body manufacturing system to which the present invention is applicable is a can body manufacturing system that includes an image forming unit that forms an image on the outer surface of a can body, and a heating device that heats the image formed on the can body by the image forming unit, and that manufactures can bodies with an image formed thereon, and the heating device is configured to include any of the heating devices described above. Effect of the Invention

[0008] According to the present invention, when heating an image formed on a can body, heating of areas that do not require heating can be suppressed. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 illustrates a can body manufacturing system. [Diagram 2] FIG. 1 illustrates an example of a printing device. [Diagram 3] 1(A) and 1(B) are diagrams illustrating a first heating device. [Figure 4] 1A and 1B are diagrams illustrating a transport mechanism. [Diagram 5] 4 is a diagram showing the can body and the heating source as viewed from the direction indicated by the arrow V in FIG. 3(A). [Figure 6] 4(A) and 4(B) are diagrams showing other configuration examples of the can body. [Figure 7] FIG. 11 is a diagram showing another configuration example of the first heating device. [Figure 8] 13(A) and 13(B) are diagrams showing other configuration examples of the heat reflecting portion. [Figure 9] FIG. 11 is a diagram showing another configuration example of the first heating device. [Figure 10] FIG. 11 is a diagram showing another configuration example of the first heating device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a diagram showing a can body manufacturing system 1 according to the present embodiment. In the can body manufacturing system 1, a can body 100 (not shown in FIG. 1) is manufactured, which is made of metal and has a cylindrical shape and a bottom, and has an image formed on its outer peripheral surface, which is an example of an outer surface. The manufactured can body 100 is filled with a beverage. The beverage is not particularly limited, and the manufactured can body 100 is filled with, for example, an alcoholic beverage such as beer or chuhai, or a soft drink (non-alcoholic beverage). After filling with the beverage, a lid member is attached to the can body 100, and a beverage can filled with the beverage is completed.

[0011] 1, the can body manufacturing system 1 is provided with a printing device 200 that prints on a can body 100. The printing device 200 of this embodiment, which functions as an image forming section, is an inkjet printing device, and forms an image on the outer peripheral surface of the can body 100 using the inkjet method. It should be noted that the printing device 200 is not limited to an inkjet printing device, but may be a printing device that performs printing using a method other than the inkjet method, such as a plate-type printing device.

[0012] The inkjet printing device 200 refers to a printing device that performs printing by ejecting ink, which is an example of paint, from an inkjet head and attaching the ink to the can body 100. Known inkjet printing methods can be used in the printing device 200. Specifically, for example, a piezo method, a thermal (bubble) method, a continuous method, etc. can be used.

[0013] Moreover, the plate-type printing device 200 refers to a printing device that performs printing using a plate. In the plate-type printing device 200, ink, which is an example of paint, is applied to the plate, and then the ink applied to the plate is transferred to the can body 100, thereby printing on the can body 100. This transfer may be performed by directly contacting the plate with the can body 100, or by placing an intermediate transfer body between the plate and the can body 100 and transferring the image to the can body 100 via this intermediate transfer body. Here, examples of printing using a plate include letterpress printing, intaglio printing, lithographic printing, and stencil printing, and any of these may be used for printing using a plate.

[0014] FIG. 2 is a diagram showing an example of a printing device 200. As shown in FIG. The printing device 200 shown in FIG. Specifically, there are provided a first inkjet head 411Y that ejects yellow ink, a second inkjet head 411M that ejects magenta ink, a third inkjet head 411C that ejects cyan ink, and a fourth inkjet head 411K that ejects black ink.

[0015] The four inkjet heads 411 are arranged so as to extend in a direction perpendicular to the moving direction of the can body 100 (a direction perpendicular to the paper surface in the figure). Also, each of the four inkjet heads 411 is arranged so as to extend along the axial direction of the can body 100 being transported. Each of the four inkjet heads 411 is disposed above the transport path of the can body 100, and ejects ink toward the can body 100 located below. In this embodiment, ink is ejected from each of the four inkjet heads 411 onto the can body 100 that is positioned below and rotates in the circumferential direction, thereby forming an image on the outer circumferential surface of the can body 100.

[0016] In this embodiment, as shown in FIG. 1, a device for performing processes other than printing processes is provided upstream of the printing device 200 in the transport direction of the can bodies 100. Specifically, in this embodiment, an uncoiler (UC), a lubricator (LU), a cupping press (CP), a body maker (BM), a trimmer (TR), and a washer (WS) are provided in this order from the upstream side in the conveying direction of the can body 100. The uncoiler (UC) unwinds the coiled aluminum sheet. The lubricator (LU) applies lubricant to the aluminum sheet. The cupping press (CP) punches out a circular blank and then draws it to form a cup-shaped material.

[0017] In the body maker (BM) that performs the forming, the cup-shaped material is subjected to drawing and ironing processes to make the peripheral wall a predetermined thickness. The bottom is then formed into a dome shape. This results in a cylindrical can body 100 that has an opening on one side and a bottom on the other side. The trimmer (TR) trims and straightens the edge portion on the upper part of the peripheral wall of the can body 100. In other words, the trimmer (TR) removes the end portion of the can body 100 on the opening side. In the washer (WS), the can body 100 is washed, lubricating oil and other deposits are removed, and a chemical coating treatment is performed as necessary.

[0018] Furthermore, a first heating device 300 is provided downstream of the printing device 200 in the transport direction of the can body 100. The first heating device 300 heats the image formed on the outer surface of the can body 100, and prints the image onto the can body 100. In other words, the first heating device 300 heats the paint made of ink that is attached to the outer surface of the can body 100, and hardens the paint. If necessary, a clear paint may be applied on top of the paint made of ink (outside the paint in the radial direction of the can body 100) and heated together with the ink to harden it. The first heating device 300 heats the image formed on the can body 100 by the printing device 200 functioning as an image forming section, and hardens the image.

[0019] On the downstream side of the first heating device 300, an inside spray (INS) and a second heating device 400 are provided. In inside spray (INS), paint is applied to the inner surface of the can body 100. In other words, in inside spray (INS), the inner surface is painted. In inside spray (INS), paint is sprayed onto the inner surface of the can body 100 to paint the inner surface. In the second heating device 400, the paint attached to the inner surface of the can body 100 is heated and baked, whereby the paint attached to the inner surface of the can body 100 is cured.

[0020] Furthermore, downstream of the second heating device 400, a smooth die Necker-Flanger (hereinafter referred to as "Necker-Flanger") (SDN) is provided as an example of a diameter reducing process. The Necker-Flanger (SDN) reduces the diameter of the opening of the can body 100 and forms a flange for attaching a can lid. As a result, the can body 100 has a reduced diameter portion and a flange. Through the above processes, an empty can body 100 is completed. This empty can body 100 is shipped after an inspection process (not shown) and transported to a beverage filling process (not shown). Then, in this filling process, the empty can body 100 is filled with the beverage, and a can lid is attached to the can body 100 after it has been filled with the beverage.

[0021] Although not shown, a base coater (BC) and a third heating device 500 (not shown) may be further provided between the washer (WS) and the printing device 200. In the base coater (BC), a base layer (base coat layer) is formed by applying a colored paint such as white paint to the outer peripheral surface of the can body 100. In the third heating device 500, this base layer is heated and hardened. The above-mentioned processes and devices provided in the can body manufacturing system 1 are merely examples, and some of the processes and devices may be deleted, other processes and devices may be added, or the processes may be interchanged or changed.

[0022] 3(A) and (B) are diagrams illustrating the first heating device 300. FIG. Fig. 3(A) is a top view of the first heating device 300, and Fig. 3(B) is a front view of the first heating device 300. In other words, Fig. 3(B) is a view of the first heating device 300 as viewed from the direction indicated by the arrow IIIB in Fig. 3(A). As shown in FIG. 3(A), the first heating device 300 of this embodiment is provided with a conveying mechanism 600 as an example of a conveying means for conveying a can body 100 on which an image has been formed by the printing device 200 (see FIG. 1) along a predetermined conveying path 300R.

[0023] Furthermore, as shown in FIG. 3(A), the first heating device 300 is provided with a plurality of heat sources 310 arranged side by side in the transport direction of the can body 100 on the side of the transport path 300R along which the can body 100 is transported. In this embodiment, a plurality of heating sources 310 are provided on both one side 30X and the other side 30Y of the transport path 300R. The heating sources 310 are used to heat the image formed on the can body 100 moving on the transport path 300R. In this configuration example shown in FIG. 3(A), the arrangement of the multiple heating sources 310 provided on one side 30X and the arrangement of the multiple heating sources 310 provided on the other side 30Y are symmetrical with respect to a straight line 300CL extending along the transport path 300R.

[0024] In this embodiment, a heating source 310 that includes a light source and radiates infrared rays from the light source is used as an example of the heating source 310. In other words, in this embodiment, a so-called IR (Infrared Rays) heater is used as the heating source 310. When infrared rays are emitted from the light source, energy is supplied to the image formed on the outer surface of the can body 100, causing the molecules in the image to vibrate (move). This vibration creates friction between the materials that make up the image, generating heat. This heat heats the image, accelerating its hardening.

[0025] The heat source 310 that radiates infrared rays is just an example, and the heat source 310 is not particularly limited, and a heat source 310 other than the heat source 310 that radiates infrared rays may be used. Moreover, it is preferable to arrange the heat source 310 so that the distance between the heat source 310 and the can body 100 when the heat source 310 is positioned opposite the can body 100 is 5 mm to 100 mm. A more preferable distance between the heat source 310 and the can body 100 is 25 mm to 50 mm.

[0026] Further, on each of one side 30X and the other side 30Y of the conveying path 300R, a flow path 320 is provided between adjacent heating sources 310 for passing gas supplied to the can bodies 100 on the conveying path 300R. In this embodiment, a gap 319 is provided between adjacent heating sources 310 in the can body conveying direction, which is the conveying direction of the can body 100. This gap 319 serves as a flow path 320, and gas is supplied to the can body 100 through this gap 319 (details will be described later).

[0027] Furthermore, in this embodiment, as shown in FIGS. 3(A) and (B), a gas supply mechanism 350 is provided as an example of a gas supply means for supplying gas through a flow path 320 to the can bodies 100 on the transfer path 300R. As shown in Fig. 3(B), the gas supply mechanism 350 is composed of a heater 351, a blower 352 serving as an air source, and two supplied parts 353 to which the gas sent by the blower 352 is supplied. Fig. 3(B) shows only one of the supplied parts 353 located on one side 30X.

[0028] 3A, the supplied portion 353 is provided on each of one side 30X and the other side 30Y of the transport path 300R. The inside of the supplied portion 353 is hollow. The supply portion 353 provided on one side 30X of the conveying path 300R is disposed on the opposite side to the side on which the conveying path 300R is provided, sandwiching a plurality of heating sources 310 provided on one side 30X of the conveying path 300R. In addition, the supply section 353 provided on the other side 30Y of the conveying path 300R is also positioned on the opposite side to the side on which the conveying path 300R is provided, sandwiching a plurality of heating sources 310 provided on the other side 30Y of the conveying path 300R.

[0029] The heater 351 and the blower 352 are disposed below the transport path 300R of the can body 100, as shown in FIG. 3(B). As described above and as shown in FIG. 3(A), the supplied portions 353 are provided on both the one side 30X and the other side 30Y of the transport path 300R. As shown in FIGS. 3(A) and 3(B), each of the supply recipients 353 is provided with a gas exhaust port 353X on the side where the transfer path 300R is provided.

[0030] In this embodiment, gas is discharged from this outlet 353X, and the discharged gas passes through the flow path 320 and is supplied to the can body 100 on the transfer path 300R, as shown by an arrow 3C in FIG. 3(A). When gas is supplied to the can body 100, the hardening of the image formed on the can body 100 is accelerated compared to when gas is not supplied.

[0031] In this embodiment, a heater 351 is provided as part of the gas supply mechanism 350, and the gas supply mechanism 350 heats the gas to be supplied to the can body 100. As a result, in this embodiment, the heated gas is supplied to the can body 100. In this embodiment, air is used as the gas. In this embodiment, heated air is supplied to the can body 100. The components of the gas are not particularly limited, and a gas other than air may be supplied to the can body 100.

[0032] Furthermore, in this embodiment, as shown in FIG. 3(B), an exhaust blower 355 is provided on the ceiling of the first heating device 300, and this exhaust blower 355 exhausts the gas inside the first heating device 300 to the outside of the first heating device 300. Furthermore, in this embodiment, an intake port (not shown) for taking in gas from outside the first heating device 300 into the first heating device 300 is provided. In this embodiment, as the exhaust blower 355 exhausts gas, gas outside the first heating device 300 is supplied into the first heating device 300 through the intake port.

[0033] 4A and 4B are diagrams illustrating the transport mechanism 600. FIG. Fig. 4(A) is a top view of the transport mechanism 600, and Fig. 4(B) is a front view of the transport mechanism 600. In other words, Fig. 4(B) is a view of the transport mechanism 600 as viewed from the direction indicated by the arrow IVB in Fig. 4(A). 4(B), the conveying mechanism 600 is provided with a moving section 610 that moves to the right in the drawing. The conveying mechanism 600, which functions as a conveying means, uses the moving section 610 to convey the can body 100 on which the image is formed along the conveying path 300R.

[0034] As shown in Fig. 3(A), the moving part 610 is composed of a member formed in a ring shape and performing a circulating movement. In this embodiment, a part of the moving part 610 performing the circulating movement moves along the linear transport path 300R shown in Fig. 3(A). 3A, a rotating member 611 is further provided for applying a driving force to the moving part 610. This rotating member 611 is rotated in the clockwise direction in the figure by a driving source (not shown) such as a motor. Accordingly, the moving part 610 moves. After moving along the linear transport path 300R, the moving section 610 moves in a circulating manner toward the upstream side in the can body transport direction as shown by the arrow 2C in FIG. 3(A). The moving part 610 is formed of, for example, a chain or a belt. When moving toward the upstream side in the can body conveying direction, the moving part 610 moves through the inside of the first heating device 300 as shown in Fig. 3(A). This suppresses the temperature drop of the moving part 610 compared to when the moving part 610 moves through the outside of the first heating device 300.

[0035] Furthermore, the conveying mechanism 600 is provided with a plurality of can body supporting portions 620 for supporting the can bodies 100, as shown in FIG. 4(B). The can body support part 620 is attached to the moving part 610 and is supported by the moving part 610. In addition, the can body support part 620 is provided in a shape that protrudes upward from the moving part 610. The can body support portion 620 is provided with a contact member 626 that is inserted inside the can body 100 and comes into contact with the can body 100, and a base 627 that supports the contact member 626.

[0036] The can body 100 is formed in a tubular shape. More specifically, the can body 100 is formed in a cylindrical shape. As shown in FIG. 4(B), the can body 100 has a bottom 101 at one end in the axial direction, and an opening 102 at the other end. One end of the can body 100 is closed, and this end serves as the bottom 101 of the can body 100. The other end of the can body 100 is not closed, and an opening 102 is provided at this other end of the can body 100.

[0037] Pedestal 627, which constitutes a part of can body support portion 620, is made of a disk-shaped member and is provided so as to extend along the horizontal direction. The contact member 626 is supported by a base 627. The contact member 626 is configured by a rod-shaped member extending upward in the figure from the base 627. A plurality of rod-shaped members are provided, and in this embodiment, the plurality of rod-shaped members are supported by a single common base 627. Furthermore, the rod-shaped members are provided in parallel to each other. The contact member 626 is not limited to a plurality of rod-shaped members, and may be formed of, for example, a single cylindrical member having an outer diameter slightly smaller than the diameter of the inner peripheral surface of the can body 100.

[0038] In this embodiment, the can body support part 620 is inserted into the inside of the can body 100, whereby the can body support part 620 supports the can body 100. More specifically, in this embodiment, a contact member 626 made of a rod-shaped member is inserted into the inside of the can body 100 through the opening 102 of the can body 100, and the can body 100 is supported by this contact member 626. When the can body support part 620 supports the can body 100, the can body support part 620 moves downstream along the conveying path 300R shown in Fig. 3(A) in association with the movement of the moving part 610, and then turns back and moves in a circulating manner as indicated by the arrow 2C. In Fig. 3(A), the moving part 610 is depicted as moving in a circulating manner horizontally, but it may move in a circulating manner vertically.

[0039] Furthermore, in this embodiment, a rotation mechanism (not shown) that rotates each of the can body supporting portions 620 is provided. The rotation mechanism is realized, for example, by a motor provided in each of the can body supports 620. When this motor is driven, the can body support part 620 rotates around a rotation axis (not shown) extending along the vertical direction, and as a result, the can body 100 supported by the can body support part 620 rotates in the circumferential direction of the can body 100.

[0040] As another example of the rotation mechanism, a contact portion 633 that comes into contact with an outer periphery 621 of a can body support portion 620 may be provided as shown in FIG. 4(A). The contact portion 633 is disposed along the movement direction (the direction of the conveying path 300R) of the can body supporting portion 620. When the contact portion 633 is used, the moving can body supporting portion 620 receives a resistance from the contact portion 633. As a result, the can body support part 620 rotates about a rotation axis extending along the vertical direction, and accordingly, the can body 100 supported by the can body support part 620 rotates in the circumferential direction of the can body 100. The rotation mechanism is not limited to the mechanism described above, and other known mechanisms may be used.

[0041] Moreover, the transport mechanism 600 is not limited to the mechanism shown in FIGS. 4(A) and 4(B), and other known mechanisms may be used. Specifically, for example, the can body 100 may be moved using a linear movement mechanism. Alternatively, for example, a drive source such as a motor may be provided on a support that supports the can body 100, and the support may move by itself, thereby moving the can body 100. Alternatively, the can bodies 100 may be moved by placing the can bodies 100 on a belt conveyor that moves in a circular manner.

[0042] In this embodiment, at the can body mounting section 361 shown in Figure 3 (A), the can body 100 transported from the upstream side is supplied to the can body supporting section 620 (see Figure 4 (B)), and the can body supporting section 620 begins to support the can body 100. The can body supporting section 620, which has started supporting the can body 100, moves downstream along the conveying path 300R (see FIG. 3(A)) formed in a straight line, in association with the movement of the moving section 610.

[0043] In this embodiment, the image formed on the can body 100 is heated while the can body support part 620 moves downstream along the conveying path 300R. This promotes hardening of the image. Then, when the can body supporting portion 620 reaches the can body removing portion 362 shown in FIG. 3(A), the can body 100 is removed from the can body supporting portion 620 by a removing mechanism (not shown). Since the can body support part 620 after the can body 100 has been removed is attached to the moving part 610, it returns to the can body attachment part 361 located upstream in the can body conveying direction.

[0044] FIG. 5 is a diagram of the can body 100 and the heating source 310 as viewed from the direction indicated by the arrow V in FIG. 3(A). FIG. 5 shows a plurality of heat sources 310 arranged on the other side 30Y. 5 also shows one can body 100 and one can body support part 620. Furthermore, in this Fig. 5, one can body 100 in the middle of being transported is positioned opposite the heating source 310.

[0045] In this embodiment, as shown in FIG. 5, when the can body 100 is positioned in a position facing the heat source 310, a part of the can body 100 is positioned away from this facing position. Specifically, in this embodiment, when the can body 100 is located in a position facing the heat source 310 , the bottom 101 of the can body 100 is located at a position away from the position facing the heat source 310 . In this embodiment, the inside of the rectangle indicated by the symbol 5A indicates the opposing position of the heating source 310, and in this embodiment, when the heating source 310 is viewed from the front as in Figure 5, the bottom 101 of the can body 100 is located outside this rectangle. The heat source 310 of this embodiment has a surface 311 facing the transport path 300R, and when the heat source 310 is viewed from the front, the bottom 101, which is part of the can body 100, is located outside the periphery 312 surrounding this surface 311.

[0046] Furthermore, in this embodiment, when the can body 100 is positioned opposite the heat source 310 , the bottom 101 of the can body 100 is located above the upper end 313 of the heat source 310 . In this embodiment, the can body 100 is transported along the transport path 300R with the bottom 101 positioned at the top and the opening 102 positioned at the bottom, as shown in FIG. 4(B). In this embodiment, when the can body 100 is positioned opposite the heat source 310 as shown in FIG. 5, the bottom 101 of the can body 100 is located above the upper end 313 of the heat source 310.

[0047] As shown in FIG. 5, a plurality of heating sources 310 are provided lined up in the can body conveying direction. In this embodiment, when the can body 100 passes sequentially through the opposing positions of the multiple heating sources 310, a portion of the can body 100 passes sequentially through locations that are out of the opposing positions. Specifically, the bottom 101 of the can body 100 passes sequentially through locations that are out of the opposing positions.

[0048] In this embodiment, as described above, the arrangement of the multiple heating sources 310 provided on one side 30X and the arrangement of the multiple heating sources 310 provided on the other side 30Y are symmetrical with respect to a straight line 300CL (see FIG. 3(A)) extending along the transport path 300R. Therefore, in this embodiment, as shown in FIG. 3(A), when the can body 100 is positioned opposite the heating source 310 (hereinafter referred to as "one-side heating source 310A") provided on one side 30X, the can body 100 is also positioned opposite the heating source 310 (hereinafter referred to as "other-side heating source 310B") provided on the other side 30Y.

[0049] In other words, in this embodiment, when the can body 100 is positioned opposite the one-side heating source 310A provided on one side 30X, as shown in Figure 3(A), the can body 100 is positioned opposite the one-side heating source 310A and the other-side heating source 310B. At this time, in this embodiment, a part of the can body 100 moves out of the opposing position of the one-side heating source 310A and also moves out of the opposing position of the other-side heating source 310B. Specifically, the bottom 101 of the can body 100 moves out of the opposing position of the one-side heating source 310A and also moves out of the opposing position of the other-side heating source 310B. More specifically, the bottom 101 of the can body 100 is located above the upper end 313 (see FIG. 5) of the one-side heating source 310A, and is located above the upper end 313 of the other-side heating source 310B.

[0050] In the present embodiment, when the bottom 101 of the can body 100 is located at a position away from the opposing position of the heating source 310, the bottom 101 of the can body 100 is less likely to be heated. As a result, in the present embodiment, deformation of the bottom 101 of the can body 100 caused by subsequent heating of the can body 100 is less likely to occur. In this embodiment, the completed can body 100 is shipped, and in a beverage filling process at the shipping destination, the inside of the can body 100 is filled with a beverage, and a can lid is further attached. Next, the can body 100 with the can lid attached is heated for sterilization.

[0051] When this heating is performed, the pressure inside the can body 100 increases, and pressure is applied to the bottom 101 of the can body 100 from inside the can body 100. When this pressure is applied to the bottom portion 101, if the bottom portion 101 is heated by the first heating device 300, the bottom portion 101 is likely to be deformed by this pressure. Specifically, bottom 101 normally has a recess toward the inside of can body 100, but this recess may disappear and bottom 101 may become convex toward the outside of can body 100. In the manufacturing process of the can body 100 of this embodiment, for example, at the body maker (BM) shown in Fig. 1, a recess toward the inside of the can body 100 is provided at a location that will become the bottom 101 of the can body 100. When the bottom 101 is heated by the first heating device 300, this recess disappears at the above-mentioned shipping destination, and further, a situation may occur in which the bottom 101 becomes convex toward the outside of the can body 100.

[0052] In contrast, in the present embodiment, when the first heating device 300 positions the bottom 101 at a position away from the position facing the heating source 310, heating of the bottom 101 is suppressed, and deformation of the bottom 101 is less likely to occur. In this case, the above-mentioned situation in which the bottom 101 becomes convex toward the outside of the can body 100 is less likely to occur. When the bottom 101 is positioned opposite the heat source 310 in the first heating device 300, the bottom 101 is annealed, and the strength of the material constituting the can body 100 is likely to decrease in the bottom 101 of the can body 100. In this case, the above-mentioned situation in which the bottom 101 becomes convex toward the outside of the can body 100 is likely to occur. In contrast, when the bottom 101 is located in a position away from the position facing the heat source 310 in the first heating device 300, annealing is difficult to occur, and the strength of the material constituting the can body 100 is unlikely to decrease. In this case, the bottom 101 is unlikely to become convex toward the outside of the can body 100.

[0053] 6(A) and (B) are diagrams showing other configuration examples of the can body 100. In FIG. In this embodiment, as described above, the bottom 101 of the can body 100 is located at a position shifted from the position facing the heat source 310. However, this is not limited thereto, and a portion of the can body 100 other than the bottom 101 may be located at a position shifted from the position facing the heat source 310. As shown in FIG. 6(A), the can body 100 may be provided with a reduced diameter section 103 on the opening 102 side of the can body 100, in which the outer diameter of the can body 100 decreases toward the opening 102, but this reduced diameter section 103 may be positioned at a position away from the position facing the heating source 310.

[0054] When the heating of the can body 100 having the reduced diameter section 103 is performed by the first heating device 300, the Necker-Flanger (SDN) shown in Figure 1 is provided upstream of the first heating device 300 shown in Figure 1 in the can body conveying direction. When a necker flanger (SDN) is provided upstream of the first heating device 300 in the can body transport direction, the necker flanger (SDN) may be provided upstream of the printing device 200 in the can body transport direction. Alternatively, the necker flanger (SDN) may be provided downstream of the printing device 200 in the can body transport direction and upstream of the first heating device 300 in the can body transport direction.

[0055] In addition, as shown in FIG. 6(B), a threaded portion 104 for attaching a cap (not shown in FIG. 6(B)) may be provided on the opening 102 side of the can body 100, but this threaded portion 104 may be positioned at a location away from the opposing position of the heating source 310. When heating of the can body 100 having the threaded portion 104 is performed by the first heating device 300, a process (device) for providing the threaded portion 104 in the can body 100 is provided upstream in the can body conveying direction from the first heating device 300 shown in Figure 1. When this step (device) for providing the screw portion 104 is provided upstream of the first heating device 300 in the can body transport direction, this step may be provided upstream of the printing device 200 in the can body transport direction, as described above. Alternatively, this step may be provided downstream of the printing device 200 in the can body transport direction and upstream of the first heating device 300 in the can body transport direction.

[0056] Next, the relationship between the heat source 310 and the transport mechanism 600 will be described with reference to FIG. In FIG. 5, only one can body support part 620 is shown, and the other can body support parts 620 are not shown. In this embodiment, as shown in FIG. 5, a moving part 610 provided in a transport mechanism 600 passes through a portion that is not opposed to the heat source 310. In the embodiment shown in FIG. More specifically, in this embodiment, the moving part 610 that performs the circulating movement moves horizontally below the lower end part 314 of the heat source 310.

[0057] As shown in Figure 3(A), the moving section 610 of this embodiment has a first portion 610A that is straight and extends downstream in the can body transport direction, and a second portion 610B that is straight and extends upstream in the can body transport direction. In this embodiment, the first portion 610A and the second portion 610B are aligned in the height direction, and in this embodiment, both the first portion 610A and the second portion 610B pass through a location that is not opposed to the heat source 310.

[0058] It is not necessary to align the height position of the first portion 610A and the height position of the second portion 610B, and the height position of the first portion 610A and the height position of the second portion 610B may be different. Even if the height position of the first portion 610A and the height position of the second portion 610B are made different, it is preferable to position the first portion 610A and the second portion 610B so that both the first portion 610A and the second portion 610B pass through a location that is away from the opposing position of the heating source 310.

[0059] Furthermore, in this embodiment, as shown in FIG. 5, when the can body 100 is located at a position facing the heat source 310, a part of the can body support part 620 is located at a position deviated from this facing position. Specifically, in this embodiment, when the can body 100 is located at a position facing the heat source 310, the seat 627 of the can body support part 620 is located at a position away from the facing position. In this embodiment, most of the contact member 626 is located at a position facing the heat source 310 , but the base 627 is not located at a position facing the heat source 310 .

[0060] It is expected that the heat from the heating source 310 will cause deterioration of the can body support portion 620, which will require replacement of the component. In this embodiment, even if deterioration of the can body support part 620 occurs, the can body support part 620 can be replaced by removing the contact member 626, which is more deteriorated, from the base 627, which is less deteriorated, and installing a new contact member 626 on the base 627. In other words, in this embodiment, the can body support part 620 can be replaced without replacing the entire can body support part 620. If the base 627 and the moving part 610 are configured to pass through a position facing the heat source 310, it becomes necessary to replace the base 627 and the moving part 610, and replacing the parts requires a lot of effort. In contrast, in the present embodiment, the base 627 and the moving part 610 do not pass through the position facing the heat source 310, so the frequency of replacing the base 627 and the moving part 610 is reduced. In this case, the labor required for replacing the members is reduced.

[0061] FIG. 7 is a diagram showing another example of the configuration of the first heating device 300. In FIG. In this configuration example, similarly to the above, a plurality of heating sources 310 are provided on one side 30X of the transport path 300R. Also, in this configuration example, a heat reflecting section 390 is provided on the other side 30Y of the transport path 300R. As described above, a plurality of heating sources 310 are provided and arranged side by side in the can body conveying direction. Furthermore, as described above, a flow path 320 is provided between adjacent heating sources 310. This flow path 320 is formed by a gap 319 existing between the heating sources 310.

[0062] The heat reflecting portion 390 reflects heat from a heating source 310 provided on one side 30X toward the transport path 300R. The heat reflecting portion 390 is configured by a so-called mirror and has a function of reflecting light. The heat reflecting portion 390 shown in Fig. 7 is formed so as to be convex toward the transport path 300R. A plurality of heat reflecting sections 390 are provided and are arranged side by side in the can body conveying direction. Furthermore, in this configuration example, a flow path 320 for passing gas supplied to the can body 100 on the conveying path 300R is provided between adjacent heat reflecting sections 390. This flow path 320 is formed by a gap 319 existing between the heat reflecting sections 390.

[0063] In this configuration example, on one side 30X of the transport path 300R, gas is supplied to the can bodies 100 on the transport path 300R through a flow path 320 provided between adjacent heating sources 310, as described above. On the other hand, on the other side 30Y of the transport path 300R, gas is supplied to the can bodies 100 on the transport path 300R through a flow path 320 provided between the heat reflecting sections 390 adjacent to each other. Furthermore, in this configuration example, heat is supplied to the can body 100 from a heating source 310 provided on one side 30X, and heat is further supplied to the can body 100 from a heat reflecting section 390 provided on the other side 30Y.

[0064] Although not shown in the drawings, in this configuration example, similarly to the above, when the can body 100 is positioned opposite the heat source 310, a part of the can body 100 is positioned away from the opposite position of the heat source 310. Specifically, the bottom 101 of the can body 100 is positioned away from the opposite position. More specifically, the bottom 101 of the can body 100 is located above the upper end 313 of the heat source 310 (see FIG. 5).

[0065] Although not shown in the drawings, in this configuration example, when the can body 100 is located at a position facing the heat reflecting portion 390, a part of the can body 100 is located at a position that is out of the facing position of the heat reflecting portion 390. Specifically, the bottom 101 of the can body 100 is located at a position that is out of the facing position. More specifically, the bottom 101 of the can body 100 is located above the upper end of the heat reflecting portion 390 .

[0066] Figures 8(A) and (B) are diagrams showing other configuration examples of the heat reflecting portion 390. Figures 8(A) and (B) show the heat reflecting portion 390 as viewed from above. The shape of the heat reflecting portion 390 is not particularly limited. In the configuration example shown in FIG. 7, the heat reflecting portion 390 is formed so as to be convex toward the transport path 300R. Without being limited thereto, as shown in Fig. 8(A), the heat reflecting portion 390 may be given an uneven shape, so that infrared rays are diffusely reflected by the heat reflecting portion 390. Moreover, the heat reflecting portion 390 may be formed in a flat shape, as shown in Fig. 8(B).

[0067] In addition, the first heating device 300 may be provided with two or more types of heat reflecting section 390, for example, two or more types of heat reflecting section 390 selected from a first type of heat reflecting section 390 shown in FIG. 7, a second type of heat reflecting section 390 shown in FIG. 8(A), and a third type of heat reflecting section 390 shown in FIG. 8(B). The heat reflecting section 390 may be provided on the ceiling of the first heating device 300, and may direct infrared rays directed upward from the heat source 310 toward the transport path 300R located below.

[0068] Further, in the above, the first heating device 300 has been described, but the second heating device 400 (see FIG. 1) and the third heating device 500 (not shown) may also be configured in the same manner as the first heating device 300. In addition, in the above, a configuration in which the bottom 101 of the can body 100 is located above the upper end 313 of the heat source 310 or above the upper end of the heat reflecting section 390 has been described as an example, but the present invention is not limited to this. For example, the bottom 101 of the can body 100 may be located below the lower end 314 (see FIG. 5) of the heat source 310 or below the lower end of the heat reflecting section 390. In other words, a part of the can body 100 may be located below the lower end 314 of the heat source 310 or below the lower end of the heat reflecting portion 390.

[0069] 9 and 10 are diagrams showing other configuration examples of the first heating device 300. In FIG. Fig. 9 shows the first heating device 300 as viewed from above, and Fig. 10 shows the first heating device 300 as viewed from the front. In the above, an example configuration has been described in which the can body 100 arranged in the vertical direction moves in the horizontal direction between a pair of heating sources 310 arranged in the vertical direction and lined up in the horizontal direction.

[0070] The arrangement of the heating source 310 and the can body 100 is not limited to this, and for example, as shown in Figure 9, a configuration may be used in which the can body 100 arranged horizontally moves horizontally between a pair of heating sources 310 arranged horizontally and lined up in multiple rows in the horizontal direction. FIG. 9 shows one of the pair of heating sources 310, which is located above, of the two heating sources 310. In the configuration example shown in FIG. 9, the bottom 101 of the can body 100, which is an example of a part of the can body 100, passes through a location that is not opposed to the heat source 310.

[0071] Also, for example, as shown in FIG. 10, a configuration may be used in which a can body 100 arranged horizontally moves vertically between a pair of heating sources 310 arranged vertically and lined up in multiple rows in the vertical direction. 10, the can body 100 is configured to move downward. However, the present invention is not limited to this, and the can body 100 may be configured to move upward. FIG. 10 shows one of the two heat sources 310 constituting a pair of heat sources 310, which is located on the front side in the drawing. In this configuration example shown in FIG. 10, the bottom 101 of the can body 100, which is an example of a part of the can body 100, also passes through a location that is not opposed to the heat source 310.

[0072] In the configuration of this embodiment described above with reference to Figures 5, 9 and 10, the can body 100 is transported with the axial direction of the can body 100 aligned in a direction intersecting the can body transport direction, as shown in Figure 9. More specifically, the can body 100 is transported with the axial direction of the can body 100 aligned in a direction perpendicular to the can body transport direction. In the configurations of the present embodiment described with reference to FIGS. 5, 9, and 10, each of the heat sources 310 is disposed along both the can body conveying direction and the axial direction of the can body 100. Furthermore, a plurality of heating sources 310 are provided and arranged side by side in the can body conveying direction.

[0073] In any of the configurations described above with reference to FIGS. 5, 9 and 10, each of the heat sources 310 has one end 331 and the other end 332 that are located at different positions in a direction intersecting the can body conveying direction, as shown in FIG. In other words, each of the heating sources 310 has one end 331 and the other end 332 that are located at different positions in a direction perpendicular to the can body transport direction. In other words, each of the heating sources 310 has one end 331 and the other end 332 that are located at different positions in the axial direction of the can body 100.

[0074] Further, here, a one-end side straight line 341 is assumed to be a straight line along the can body conveying direction and to pass through one end 331 of the heat source 310. Also, an other-end side straight line 342 is assumed to be a straight line along the can body conveying direction and to pass through the other end 332 of the heat source 310. Furthermore, a first opposite side region 21S is assumed to be a region on the opposite side of the one end side straight line 341 from the region 21R located on the side where the other end 332 of the heat source 310 is provided. Also, a second opposite side region 22S is assumed to be a region on the opposite side of the other end side straight line 342 from the region 22R located on the side where the one end 331 of the heat source 310 is provided.

[0075] In this embodiment, when the heating source 310 is viewed from the front as in Fig. 9, the bottom 101, which is an example of a part of the can body 100, is located in the first opposite side region 21S. Although not shown in the drawings, the bottom 101, which is an example of a part of the can body 100, may be located in the second opposite side region 22S. In this embodiment, in the axial direction of the can body 100, a bottom portion 101, which is an example of a part of the can body 100, is located on the first opposite side region 21S side relative to the one end side straight line 341. Due to this configuration, in this embodiment, a part of the can body 100 passes through a location that is not opposed to the heat source 310. [Explanation of symbols]

[0076] Reference Signs List 1...can body manufacturing system, 30X...one side, 30Y...other side, 100...can body, 101...bottom, 102...opening, 200...printing device, 300...first heating device, 300R...transport path, 310...heating source, 313...upper end, 600...transport mechanism, 610...moving part, 620...can body support part, 626...contact member, 627...base

Claims

1. A conveying means for conveying the can body on which the image is formed along a conveying path; a heat source provided on a side of the transport path and used to heat an image formed on a can body moving along the transport path; Equipped with When the can body is positioned at a position facing the heat source, a part of the can body is positioned at a position away from the facing position. heating device.

2. The can body is formed in a cylindrical shape, has a bottom at one end and an opening at the other end, The heating device according to claim 1 , wherein when the can body is positioned opposite the heat source, the bottom of the can body is positioned at a position away from the opposite position.

3. The can body is transported along the transport path with the bottom portion positioned above and the opening portion positioned below, 3. The heating device according to claim 2, wherein when the can body is positioned opposite the heat source, the bottom of the can body is positioned higher than an upper end of the heat source.

4. The heating sources are provided on both one side and the other side of the transport path, When the can body is located at a position facing the one-side heating source, which is the heating source provided on the one side, the can body is located at a position facing the other-side heating source, which is the heating source provided on the other side; The heating device described in claim 1, wherein when the can body is positioned opposite the one-side heating source and the other-side heating source, a portion of the can body moves out of the opposing position of the one-side heating source and out of the opposing position of the other-side heating source.

5. The can body is formed in a cylindrical shape, has a bottom at one end and an opening at the other end, The heating device described in claim 4, wherein when the can body is positioned opposite the one-side heating source and the other-side heating source, the bottom of the can body moves out of the opposing position of the one-side heating source and moves out of the opposing position of the other-side heating source.

6. A plurality of the heating sources are provided on one side of the transport path and aligned in the can body transport direction, The heating device according to claim 1 , wherein when the can body passes sequentially between the opposing positions of the plurality of heat sources, the portion of the can body passes sequentially through a portion that is out of the opposing position.

7. The can body is formed in a cylindrical shape, has a bottom at one end in an axial direction of the can body, and has an opening at the other end in the axial direction, The heating device according to claim 6, wherein when the can body passes sequentially between the opposing positions of the plurality of heat sources, the bottom of the can body passes sequentially through locations that are out of the opposing positions.

8. a conveying means for conveying the can body on which the image is formed along a conveying path using a moving part that moves; a heat source provided on a side of the transport path and used to heat an image formed on a can body moving along the transport path; Equipped with A heating device configured so that the moving part passes through a location that is out of the opposing position of the heat source.

9. The moving part is composed of a member that performs a circulating movement, The heating device according to claim 8 , wherein the moving part that performs circulating movement passes through a portion that is out of the position facing the heat source.

10. The can body support part is supported by the moving part that performs a circulating movement and supports the can body, When the can body is positioned at a position facing the heat source, a part of the can body support part is positioned at a position away from the facing position. The heating device according to claim 9.

11. The can body support portion is provided with a contact member that is inserted inside the can body and contacts the can body, and a base that supports the contact member, The heating device according to claim 10 , wherein when the can body is positioned opposite the heat source, the base of the can body support portion is positioned at a location away from the opposite position.

12. A can body manufacturing system comprising an image forming unit that forms an image on the outer surface of a can body, and a heating device that heats the image formed on the can body by the image forming unit, and which produces can bodies with an image formed thereon, wherein the heating device is configured to include a heating device described in any one of claims 1 to 11.

Images