WO2020031322A1 - Paper container production device, paper container production method, and paper container - Google Patents

Paper container production device, paper container production method, and paper container Download PDF

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Publication number
WO2020031322A1
WO2020031322A1 PCT/JP2018/029896 JP2018029896W WO2020031322A1 WO 2020031322 A1 WO2020031322 A1 WO 2020031322A1 JP 2018029896 W JP2018029896 W JP 2018029896W WO 2020031322 A1 WO2020031322 A1 WO 2020031322A1
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WO
WIPO (PCT)
Prior art keywords
paper container
heating
paper
manufacturing
blank sheet
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Application number
PCT/JP2018/029896
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French (fr)
Japanese (ja)
Inventor
隆昌 篠原
歩 筒木
Original Assignee
東洋アルミエコープロダクツ株式会社
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Application filed by 東洋アルミエコープロダクツ株式会社 filed Critical 東洋アルミエコープロダクツ株式会社
Priority to PCT/JP2018/029896 priority Critical patent/WO2020031322A1/en
Publication of WO2020031322A1 publication Critical patent/WO2020031322A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/59—Shaping sheet material under pressure

Definitions

  • the present invention relates to a paper container manufacturing apparatus, and more particularly to a paper container manufacturing apparatus formed by at least a heating step and a subsequent forming step, a paper container manufacturing method using the paper container manufacturing apparatus, and the paper container. And a paper container obtained by the manufacturing apparatus.
  • FIG. 11 is a perspective view showing the appearance of a conventional paper container.
  • paper container 70 has a square bottom 71, a side wall 72 extending upward from the outer edge of bottom 71, a corner 74 connecting side walls 72 together, a side wall 72 and a corner 74. And a rim 73 formed on the outer edge of the rim.
  • the paper container 70 is formed by press-forming one blank sheet.
  • Such press-formed paper containers are lightweight and advantageous in cost, and thus are mainly used for storing foods.
  • Various manufacturing apparatuses by press molding for manufacturing such paper containers have been proposed (for example, Japanese Patent Application Laid-Open No. 2011-212882).
  • FIG. 12 is a schematic view showing a conventional paper container manufacturing apparatus
  • FIG. 13 is a schematic view showing a base paper processing process in the paper container manufacturing apparatus shown in FIG. This shows the state immediately after the supply position (B1), (2) shows the state immediately after the ruled line forming position (B2), and (3) shows the state immediately after the punching / pressing position (B3). It is shown.
  • a conventional paper container manufacturing apparatus 80 includes a supply apparatus 81 for supplying a strip-shaped base paper 77 on the upstream side. On the downstream side of the supply device 81, a molding device 83 is arranged.
  • the molding device 83 includes a pair of vertical moving devices 84, and a pair of first molds 91a and 91b and a pair of It has two molds 92a and 92b. Specific uses of each mold will be described later.
  • the strip-shaped base paper 77 wound in a roll and arranged at the base paper supply position B1 is continuously supplied from the supply device 81 to the ruled line forming position B2.
  • the supplied base paper 77 is moved by the first molds 91a and 91b of the molding device 83 at the ruled line forming position B2, as shown in FIG. Are formed at predetermined positions.
  • the base paper 77 on which the ruled lines 75 are formed is then transferred to a punching / pressing position B3.
  • the transferred base paper 77 is first formed into a substantially square shape by the second dies 92a and 92b of the molding device 83 at the punching / pressing position B3. Is punched into a desired shape.
  • the blank sheet is press-formed into a container shape by the second molds 92a and 92b at the same position. With such a flow, the paper container 70 is formed.
  • the second mold is used to soften a part of the blank sheet before press-molding into a container shape and improve the molding accuracy at the time of press-molding.
  • a heating means is incorporated in 92a and 92b.
  • FIG. 14 is a schematic sectional view of a portion including the second mold of the paper container manufacturing apparatus shown in FIG.
  • the second molds 92a and 92b include an upper mold member 93 and a lower mold member 94 facing each other.
  • An elevating member 96 is arranged on the outer peripheral side of the upper die member 93, and a heating member 97 such as a heater for heating is embedded in the elevating member 96.
  • a curling member 98 is arranged on the outer peripheral side of the lower mold member 94.
  • FIG. 15 is a schematic cross-sectional view of a portion including the second mold of the apparatus for manufacturing the paper container shown in FIG. 12, showing a state during a heating step.
  • FIG. 16 shows the state shown in FIG. It is a schematic sectional drawing of the part containing the 2nd metal mold
  • the entirety of the second mold 92a is lowered, and the lower end surface of the elevating member 96 of the second mold 92a and the upper end surface of the curling member 98 hold the transferred base paper 77 for a certain period of time. Stop. At this time, since the elevating member 96 is heated by the heating member 97, the portion of the base paper 77 sandwiched between the lower end surface of the elevating member 96 and the upper end surface of the curling member 98 is heated. The heated portion includes a part of the ruled line 75 shown in FIG.
  • the elevating member 96 is further lowered so as to push down the curling member 98, and a blank sheet is punched out of the base paper 77 by a blade (not shown).
  • the second mold 92a is further lowered at the position as it is, and the blank sheet punched out is press-formed into a container shape by the pressing end surface of the upper die member 93 and the pressing end surface of the lower die member 94.
  • the curling groove 99 formed by the elevating member 96 and the curling member 98 forms an edge winding 73 at the end of the pressed blank sheet.
  • FIG. 17 is a schematic diagram showing the relationship between the operation time of the heating means and the operation time of the molding means in the manufacturing process of the conventional paper container manufacturing apparatus as described above.
  • the heating step and the punching / pressing step are performed in one mold, so that the heating step must be performed.
  • the process proceeds to the forming process.
  • it takes time to add the operation time ⁇ of the heating means and the operation time ⁇ of the punching / pressing means (hereinafter referred to as “forming means”).
  • the heating process of the subsequent paper container (container 2) is started after the forming process of the previous paper container (container 1) is completed.
  • the operation time ⁇ of the heating means and the operation time ⁇ of the forming means are necessarily required. Therefore, when manufacturing n paper containers, it can be said that the time T obtained by multiplying the sum of the operation time ⁇ of the heating means and the operation time ⁇ of the molding means by the number n of paper containers is always required.
  • the present invention has been made to solve the above-described problems, and provides a paper container manufacturing apparatus, a paper container manufacturing method, and a paper container capable of stably mass-producing paper containers in a shorter time. With the goal.
  • a paper container manufacturing apparatus is a paper container manufacturing apparatus formed by at least a heating step and a subsequent forming step, wherein the heating step is performed.
  • Heating means for performing, a transfer means for transferring the pressed object processed by the heating means, and a forming means for performing a forming step on the transferred pressed object, the heating means And operates in a time zone including at least a part of the operation time zone of the molding means.
  • An apparatus for manufacturing a paper container is an apparatus for manufacturing a paper container by press molding, wherein a heating unit capable of heating a base paper including a blank sheet having a desired shape, and a heated base paper Transfer means, a blank sheet obtaining means for obtaining a blank sheet from the transferred base paper, and a press means for pressing the obtained blank sheet, and the heating means includes a blank sheet obtaining means and a press.
  • the device operates in a time zone including at least a part of the operation time zone of the means.
  • the heating means operates within the operating time of the blank sheet obtaining means and the pressing means.
  • the time used for operating the heating unit does not affect the time required for manufacturing the paper container by the blank sheet acquisition unit and the pressing unit.
  • An apparatus for manufacturing a paper container is an apparatus for manufacturing a paper container by press molding, comprising: a base paper supply means for supplying a strip-shaped base paper; Ruled line forming means for forming ruled lines for absorbing wrinkles, first transfer means for transferring the base paper on which the ruled lines are formed, heating means for heating the transferred base paper, and second transfer means for transferring the heated base paper.
  • the time used for the operation of the ruled line forming means and the heating means does not affect the pressing time of the paper container by the blank sheet punching means and the pressing means.
  • a method for manufacturing a paper container according to a fifth aspect of the present invention is a method for manufacturing a paper container, wherein the paper container is manufactured using the apparatus for manufacturing a paper container according to any one of the first to fourth aspects. Things.
  • the paper container according to the sixth aspect of the present invention is a paper container, which is obtained by the paper container manufacturing apparatus according to any one of the first to fourth aspects.
  • the manufacturing time of the paper container is reduced. It is substantially shortened and production efficiency is improved.
  • the paper container manufacturing apparatus In the paper container manufacturing apparatus according to the second aspect of the present invention, at least a part of the operation time period of the heating unit and the operation time period of the blank sheet acquisition unit and the pressing unit overlap, so that the manufacturing time of the paper container is substantially reduced. And the production efficiency is improved.
  • the apparatus for manufacturing a paper container according to the third aspect of the present invention is characterized in that, in addition to the effect of the invention according to the second aspect, the time used for operating the heating means is equal to the time required for manufacturing the paper container by the blank sheet obtaining means and the pressing means. , So that the production efficiency is further improved.
  • the time used for the operation of the ruled line forming means and the heating means does not affect the pressing time of the paper container by the blank sheet punching means and the pressing means.
  • the quality and production efficiency of the paper container are improved.
  • the operation time period of the heating unit and the operation time period of the molding unit overlap, so that the production time of the paper container is substantially reduced, and the production efficiency is reduced. This results in an improved paper container.
  • FIG. 2 is a schematic diagram illustrating a state in which the paper container manufacturing apparatus illustrated in FIG. 1 is under press working.
  • FIG. 2 is a schematic diagram illustrating a process of processing base paper in the paper container manufacturing apparatus illustrated in FIG. 1.
  • FIG. 2 is a schematic sectional view of a part including a second mold of the paper container manufacturing apparatus shown in FIG. 1.
  • FIG. 2 is a schematic sectional view of a part including a second mold of the apparatus for manufacturing a paper container shown in FIG. 1, showing a state during a punching step.
  • FIG. 2 is a schematic cross-sectional view of a portion including a second mold of the apparatus for manufacturing a paper container shown in FIG.
  • FIG. 4 is a schematic diagram illustrating a relationship among an operation time of a ruled line forming unit, an operation time of a heating unit, and an operation time of a forming unit in a manufacturing process of the paper container manufacturing apparatus according to the first embodiment of the present invention.
  • FIG. 3 is a schematic diagram illustrating a relationship between an operation time of a heating unit and an operation time of a molding unit in a manufacturing process of the paper container manufacturing apparatus according to the first embodiment of the present invention. It is a schematic diagram which shows the relationship between the operation time of a heating means and the operation time of a shaping means in the manufacturing process in the manufacturing apparatus of the paper container by 2nd Embodiment of this invention.
  • FIG. 13 is a schematic diagram illustrating a process of processing base paper in the paper container manufacturing apparatus illustrated in FIG. 12.
  • FIG. 13 is a schematic sectional view of a part including a second mold of the paper container manufacturing apparatus shown in FIG. 12.
  • FIG. 13 is a schematic cross-sectional view of a portion including a second mold of the paper container manufacturing apparatus shown in FIG. 12, showing a state during a heating step.
  • FIG. 13 is a schematic diagram illustrating a process of processing base paper in the paper container manufacturing apparatus illustrated in FIG. 12.
  • FIG. 13 is a schematic sectional view of a part including a second mold of the paper container manufacturing apparatus shown in FIG. 12.
  • FIG. 13 is a schematic cross-sectional view of a portion including a second mold of the paper container manufacturing apparatus shown in FIG. 12, showing a state during a heating step.
  • FIG. 13 is a schematic diagram illustrating a process of processing base paper in the paper container manufacturing apparatus illustrated in FIG. 12.
  • FIG. 13 is a schematic sectional view of
  • FIG. 13 is a schematic cross-sectional view of a portion including a second mold of the paper container manufacturing apparatus shown in FIG. 12 and shows a state at the time of completion of molding.
  • FIG. 9 is a schematic diagram illustrating a relationship between an operation time of a heating unit and an operation time of a forming unit in a manufacturing process of a conventional paper container manufacturing apparatus.
  • FIG. 1 is a schematic diagram showing an apparatus for manufacturing a paper container according to the first embodiment of the present invention.
  • a paper container 50 manufactured by the paper container manufacturing apparatus 10 has the same configuration as the conventional paper container 70 shown in FIG.
  • the paper container manufacturing apparatus 10 is provided with a base paper supply unit 11 similar to the conventional one, which is a base paper supply unit, on the upstream side, and a molding unit 13 on the downstream side.
  • the molding device 13 includes a pair of up-and-down moving devices 14, and a pair of first dies 21a and 21b, which are means for forming ruled lines on the base paper 57, on the upstream side, and a blank sheet punching of the base paper 57 on the downstream side.
  • a pair of second molds 22a and 22b serving as a pulling means and a pressing means are respectively attached.
  • a pair of heating members 23a and 23b including heaters as heating means for the base paper 57 are disposed between the first molds 21a and 21b and the second molds 22a and 22b.
  • FIG. 2 is a schematic view showing a state of the paper container manufacturing apparatus shown in FIG. 1 during press working.
  • FIG. 3 is a schematic diagram showing a base paper processing step in the paper container manufacturing apparatus shown in FIG. 1, wherein (1) shows a state immediately after the base paper supply position (A1), and (2) ) Shows each state from the ruled line forming position (A2) to the punching / pressing position (A3), and (3) shows the state immediately after the punching / pressing position (A3).
  • a strip-shaped base paper 57 wound in a roll shape disposed at a base paper supply position A1 is subjected to a surface coating process or the like by the supply device 11, and then downstream of the supply device 11. Is continuously supplied to the molding device 13.
  • the supplied base paper 57 is used by the first molds 21a and 21b at the ruled line forming position A2 of the molding device 13 to absorb wrinkles during molding as indicated by A2 in FIG. 3 (2).
  • Ruled lines 55 are formed at predetermined positions.
  • the base paper 57 on which the ruled lines 55 are formed is then transferred to a heating processing position H by a first transfer unit (not shown).
  • the transferred base paper 57 is held between the heating members 23a and 23b at the heating processing position H.
  • H of FIG. 3B substantially the entire substantially square portion including the ruled line 55 as indicated by the two-dot chain line is heated. By doing so, a wider area is heated than in the conventional heating step, which leads to an improvement in the molding accuracy at the time of subsequent punching and press working.
  • the heated base paper 57 is then transferred by a second transfer means (not shown) to a punching / pressing position A3.
  • the transferred base paper 57 is first heated by the second molds 22a and 22b at the punching / pressing position A3.
  • 58 is punched into a desired shape such as a substantially square shape including at least a part of a ruled line as shown by a broken line.
  • the blank sheet 58 punched out is pressed into a container shape by the second molds 22a and 22b as it is, and the paper container 50 is formed.
  • the time required for processing in each of the first molds 21a and 21b as the ruled line forming means and the heating members 23a and 23b as the heating means is determined by the blank mold punching means and the second mold 22a as the pressing means. , 22b is the same as the time required for processing.
  • the ruled line forming means, the heating means, and the punching / pressing means operate at independent positions.
  • the first molds 21a, 21b and the second molds 22a, 22b are attached to the pair of vertical movement devices 14, and the heating members 23a, 23b are connected to the first molds 21a, 21b and the second mold 22a, 22b, and each means operates synchronously.
  • the entire transfer means including the first transfer means and the second transfer means operate in synchronization with each other. In the paper container manufacturing apparatus 10 as a whole, synchronously forming ruled lines, heating, punching and pressing, and each processing step and each synchronously transferring step are alternately operated.
  • the specific operation of the second molds 22a and 22b at the punching / pressing position A3 of the paper container manufacturing apparatus 10 in this embodiment is as follows when compared with the conventional one.
  • FIG. 4 is a schematic sectional view of a part including the second mold of the paper container manufacturing apparatus shown in FIG.
  • second molds 22a and 22b have a configuration in which heating member 97 is removed from conventional second molds 92a and 92b shown in FIG. Of the second molds 92a and 92b, and the description thereof will not be repeated.
  • FIG. 5 is a schematic cross-sectional view of a portion including the second mold of the paper container manufacturing apparatus shown in FIG. 1 and shows a state during a punching step.
  • the second mold 22a descends from the state of FIG. At that time, the transferred base paper 57 has already been heated by the heating members 23a and 23b. Therefore, the raising / lowering member 36 and the curling member 38 of the second molds 22a and 22b holding the base paper 57 do not need to be stopped for a predetermined time to heat the base paper 57 as in the related art. A blank sheet 58 is punched from 57.
  • FIG. 6 is a schematic cross-sectional view of a portion including the second mold of the paper container manufacturing apparatus shown in FIG. 1 and shows a state at the time of completion of molding.
  • the second mold 22a further descends from the position where the blank sheet 58 has been punched out, and the blank sheet 58 that has been punched out is pressed against the pressing end surface of the upper mold member 33 of the second mold 22a and the second mold 22a.
  • the pressing end surface of the lower mold member 34 of the mold 22b is press-formed into a container shape.
  • the curl formed by the lifting member 36 and the curling member 38 of the second molds 22a and 22b is formed on the end of the pressed blank sheet 58.
  • the groove 39 forms an edge winding 53.
  • FIG. 7 is a schematic diagram showing the relationship among the operating time of the ruled line forming means, the operating time of the heating means, and the operating time of the forming means in the manufacturing process of the paper container manufacturing apparatus according to the first embodiment of the present invention. It is.
  • the operation time ⁇ of the ruled line forming means derived from the time required for processing in the ruled line forming means
  • the operation time ⁇ of the heating means derived from the time required for processing in the heating means.
  • the operating time ⁇ of the forming means which is the time required for processing in the blank sheet punching means and pressing means (hereinafter referred to as “forming means”).
  • the ruled line forming step, the heating step, and the punching / pressing step (hereinafter, referred to as “forming step”) operate in synchronization with each other.
  • the portion related to the paper container (container 1) ahead of the base paper goes through the ruled line forming step and the heating step and starts the forming process
  • the part related to the paper container (container 2) after the base paper is heated Will start.
  • the portion related to the paper container (container 3) further after the base paper starts the ruled line forming step.
  • the first paper container it takes time to add the operation time ⁇ of the ruled line forming means, the operation time ⁇ of the heating means, and the operation time ⁇ of the forming means.
  • the operation time ⁇ of the ruled line forming means and the operation time ⁇ of the heating means do not affect the operation time ⁇ of the forming means, so that the quality and production efficiency of the paper container are improved. It will be.
  • FIG. 8 is a schematic diagram showing the relationship between the operating time of the heating means and the operating time of the forming means in the manufacturing process of the paper container manufacturing apparatus according to the first embodiment of the present invention.
  • the part related to the paper container (container 1) ahead of the base paper goes through the heating step and starts the forming step
  • the part related to the paper container (container 2) after the base paper is heated. Will start.
  • the heating process of the container 2 is performed during the molding process of the container 1, and after the molding process of the container 1 is completed, the molding process of the container 2 and the heating process of the container 3 are started.
  • substantially only the operating time ⁇ of the molding means is required.
  • the time T 2 required for the manufacture of the n paper containers, a plus and operating time ⁇ of the first container of the heating means, and operating time of the molding means beta, operating time of the forming means It can be said that it takes time to add a time obtained by multiplying ⁇ by the number (n ⁇ 1) of the second and subsequent paper containers.
  • the operating time ⁇ of the heating unit does not affect the operating time ⁇ of the forming unit, so that the production efficiency is further improved. It will be.
  • FIG. 9 is a schematic diagram showing the relationship between the operation time of the heating means and the operation time of the forming means in the manufacturing process of the paper container manufacturing apparatus according to the second embodiment of the present invention.
  • the operation time ⁇ of the heating means according to the second embodiment is set longer than the operation time ⁇ of the forming means.
  • the base paper is heated evenly over time as a whole, so that the base paper is evenly heated, and a state in which softness and moisture suitable for forming are maintained, so that the forming accuracy of the paper container is further improved.
  • the portion related to the paper container (container 1) ahead of the base paper starts the forming process via the heating process
  • the portion related to the paper container (container 2) after the base paper starts the heating process.
  • the heating process of the container 2 is started during the molding process of the container 1.
  • the operation time ⁇ of the heating means is longer than the operation time ⁇ of the molding means. Because of the length, the molding process of the container 2 does not start immediately after the molding process of the container 1 is completed, but rather waits for the completion of the heating process of the container 2 before the molding process of the container 2 and the heating process of the container 3 Is started. Therefore, a standby time x occurs after the molding step, and the heating means operates during a time including at least a part of the operation time zone of the molding means.
  • the time obtained by adding the standby time x to the operating time ⁇ of the molding means is the same as the operating time ⁇ of the heating means.
  • the time T 3 required for the manufacture of the n paper containers, a plus and operating time of the first operation time ⁇ and the molding means of the heating means of the container beta, operating time of the molding means beta It can be said that it takes a time obtained by further adding a time obtained by multiplying the sum of the waiting time x and the number (n ⁇ 1) of the second and subsequent paper containers.
  • the manufacturing time of the paper container is substantially shortened, and the production efficiency is improved.
  • FIG. 10 is a schematic diagram showing the relationship between the operation time of the heating means and the operation time of the forming means in the manufacturing process of the paper container manufacturing apparatus according to the third embodiment of the present invention.
  • the configuration of the paper container manufacturing apparatus according to the third embodiment is basically the same as that of the first embodiment, and thus the description will not be repeated here, and the differences will be mainly described. I do.
  • the operation time ⁇ of the heating means according to the third embodiment is set shorter than the operation time ⁇ of the forming means.
  • the base paper tends to warm quickly, and thus such time adjustment may be performed in order to obtain softness and water retention more suitable for molding.
  • the heating process is performed on the portion related to the paper container (container 2) after the base paper.
  • the heating process is performed on the portion related to the paper container (container 2) after the base paper.
  • the heating process of the container 2 is started during the molding process of the container 1, and the operation time ⁇ of the heating means is longer than the operation time ⁇ of the molding means. Because of the short length, the heating process of the container 2 is performed from the middle of the forming process of the container 1 to the completion of the forming process. Similarly, the heating step of the container 3 is started during the molding step of the container 2. Therefore, the heating means operates within the operating time of the forming means.
  • the operating time ⁇ of the molding means is substantially longer than the operating time ⁇ of the heating means. Therefore, the time T 4 required for the manufacture of the n paper containers, a plus and operating time ⁇ of the first container of the heating means, and operating time of the molding means beta, operating time of the forming means It can be said that it takes time to add a time obtained by multiplying ⁇ by the number (n ⁇ 1) of the second and subsequent paper containers.
  • the manufacturing time of the paper container is substantially shortened, and the production efficiency is improved. Further, in the overall manufacturing time, the operating time ⁇ of the heating means does not affect the operating time ⁇ of the molding means, so that the production efficiency is further improved.
  • the object to be pressed is formed by punching a band-shaped base paper into a blank sheet and molding the sheet.
  • the object to be pressed can be obtained.
  • the means is not limited thereto, and may be another method.
  • the blank sheet is punched out of the strip-shaped base paper.
  • the present invention is not limited to this, and another method such as a configuration of preparing a blank sheet formed into a desired shape from the beginning may be used. May be provided with blank sheet acquisition means.
  • the forming means is constituted by the blank sheet punching means and the pressing means, but is not limited to this. It may be constituted by a blank sheet acquiring means and a pressing means as described above, or may be formed by another means as long as the heated material is processed to form a paper container. Good.
  • the heating means is provided independently for the molding before heating, and thus the heating means is not provided in the molding means.
  • a configuration may be adopted in which a heating member is additionally provided in the molding means.
  • the heating step and the forming step are performed successively.
  • the present invention is not limited to this, and the heating means may be arranged before the ruled line forming means. Further, the heating means may be incorporated in the ruled line forming means.
  • the heating portion is performed on the entire substantially square shape.
  • the present invention is not limited to this, and only a specific portion may be heated.
  • the heating step is started from the middle of the molding step in a time period corresponding to the completion of the molding step.
  • the present invention is not limited to this.
  • the configuration may be such that the molding step and the heating step are started at the same time, and after heating for a certain period of time, the apparatus stands by until the molding step is started.
  • the first mold as the ruled line forming means and the second mold as the molding means are attached to a pair of up and down moving devices, and the heating means as the heating means disposed therebetween.
  • the members have an independent configuration, they are not limited to this.
  • the heating member may also be attached to the vertical moving device, or conversely, each unit may be attached to an independent moving device.
  • each of the embodiments described above relates to a paper container manufacturing apparatus.
  • the embodiments described above also relate to a method of manufacturing a paper container using the paper container manufacturing apparatus of each of the above embodiments. The same applies.
  • each of the embodiments described above relates to a paper container manufacturing apparatus, but can be similarly applied to the embodiment of a paper container obtained by the paper container manufacturing apparatus of each of the above embodiments. .
  • a storage container that can be suitably used for storing food and the like can be obtained.

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Abstract

A molding device (13) which constitutes part of a paper container production device (10) and is equipped with a vertically moving device (14), and to which are attached, from the upstream side, first dies (21a, 21b) which are scoring means and second dies (22a, 22b) which constitute blank sheet-punching means and pressing means. Heating members (23a, 23b) which are heating means are positioned between the first dies (21a, 21b) and the second dies (22a, 22b). The starting paper (57) is continuously supplied from a supply device (11) to the molding device (13), and the scoring in a prescribed location by the first dies (21a, 21b), the heating treatment in a prescribed location by the heating members (23a, 23b) and the blank sheet punching and molding into a container shape by the second dies (22a, 22b) are performed in synchronization in the supplied order. As a result, the operation time for both the scoring means and heating means does not affect the operation time for the punching means and pressing means.

Description

紙容器の製造装置、紙容器の製造方法及び紙容器Paper container manufacturing apparatus, paper container manufacturing method, and paper container
　この発明は紙容器の製造装置に関し、特に、少なくとも加熱工程及びこれに続く成形工程によって成形される紙容器の製造装置、この紙容器の製造装置を用いた紙容器の製造方法、及びこの紙容器の製造装置によって得られる紙容器に関するものである。 The present invention relates to a paper container manufacturing apparatus, and more particularly to a paper container manufacturing apparatus formed by at least a heating step and a subsequent forming step, a paper container manufacturing method using the paper container manufacturing apparatus, and the paper container. And a paper container obtained by the manufacturing apparatus.
　図１１は、従来の紙容器の外観形状を示す斜視図である。 FIG. 11 is a perspective view showing the appearance of a conventional paper container.
　図を参照して、紙容器７０は、正方形状の底部７１と、底部７１の外縁から上方に延びる側壁部７２と、側壁部７２同士を接続するコーナー部７４と、側壁部７２及びコーナー部７４の外縁に形成された縁巻７３とから構成されている。そして、紙容器７０は、１枚のブランクシートをプレス成形することによって形成されている。 Referring to the figure, paper container 70 has a square bottom 71, a side wall 72 extending upward from the outer edge of bottom 71, a corner 74 connecting side walls 72 together, a side wall 72 and a corner 74. And a rim 73 formed on the outer edge of the rim. The paper container 70 is formed by press-forming one blank sheet.
　このような、プレス成形された紙容器は、軽量且つコスト的に有利となるため、主に食品の収納を目的として使用されている。そして、このような紙容器を製造するためのプレス成形による製造装置は、種々提案されている（例えば、日本国特開２０１１－２１２８８２号公報）。 (4) Such press-formed paper containers are lightweight and advantageous in cost, and thus are mainly used for storing foods. Various manufacturing apparatuses by press molding for manufacturing such paper containers have been proposed (for example, Japanese Patent Application Laid-Open No. 2011-212882).
　図１２は、従来の紙容器の製造装置を示す概略図であり、図１３は、図１２で示した紙容器の製造装置における原紙の加工工程を示す模式図であって、（１）は原紙供給位置（Ｂ１）直後の状態を示すものであり、（２）は罫線形成位置（Ｂ２）直後の状態を示すものであり、（３）は打抜・プレス加工位置（Ｂ３）直後の状態を示すものである。 FIG. 12 is a schematic view showing a conventional paper container manufacturing apparatus, and FIG. 13 is a schematic view showing a base paper processing process in the paper container manufacturing apparatus shown in FIG. This shows the state immediately after the supply position (B1), (2) shows the state immediately after the ruled line forming position (B2), and (3) shows the state immediately after the punching / pressing position (B3). It is shown.
　図１２を参照して、従来の紙容器の製造装置８０は、その上流側に帯状の原紙７７を供給する供給装置８１を備えている。又、供給装置８１の下流側には、成型装置８３が配置され、成型装置８３は、一対の上下移動装置８４を備え、その上流側に一対の第１金型９１ａ、９１ｂと、一対の第２金型９２ａ、９２ｂとを備えている。各金型の具体的な用途については後述する。 Referring to FIG. 12, a conventional paper container manufacturing apparatus 80 includes a supply apparatus 81 for supplying a strip-shaped base paper 77 on the upstream side. On the downstream side of the supply device 81, a molding device 83 is arranged. The molding device 83 includes a pair of vertical moving devices 84, and a pair of first molds 91a and 91b and a pair of It has two molds 92a and 92b. Specific uses of each mold will be described later.
　図１３を併せて参照して、従来の紙容器７０の製造工程について上流側から簡略的に説明する。 製造 With reference to FIG. 13 as well, a conventional manufacturing process of the paper container 70 will be briefly described from the upstream side.
　まず、原紙供給位置Ｂ１に配置されたロール状に巻回された帯状の原紙７７は、供給装置８１から罫線形成位置Ｂ２へ連続的に供給される。 First, the strip-shaped base paper 77 wound in a roll and arranged at the base paper supply position B1 is continuously supplied from the supply device 81 to the ruled line forming position B2.
　次に、供給された原紙７７は、罫線形成位置Ｂ２で、成型装置８３の第１金型９１ａ、９１ｂによって、図１３の（２）で示すように成形時の皺を吸収するための罫線７５が所定の位置に形成される。罫線７５が形成された原紙７７は、次に打抜・プレス加工位置Ｂ３まで移送される。 Next, the supplied base paper 77 is moved by the first molds 91a and 91b of the molding device 83 at the ruled line forming position B2, as shown in FIG. Are formed at predetermined positions. The base paper 77 on which the ruled lines 75 are formed is then transferred to a punching / pressing position B3.
　更に、移送された原紙７７は、打抜・プレス加工位置Ｂ３で、成型装置８３の第２金型９２ａ、９２ｂによって、図１３の（３）に示すように、まずブランクシートが略正方形形状等の所望の形状に打ち抜かれる。次に、そのままの位置で、第２金型９２ａ、９２ｂによって、ブランクシートが容器形状にプレス成形される。このような流れで、紙容器７０は成形される。 Further, as shown in (3) of FIG. 13, the transferred base paper 77 is first formed into a substantially square shape by the second dies 92a and 92b of the molding device 83 at the punching / pressing position B3. Is punched into a desired shape. Next, the blank sheet is press-formed into a container shape by the second molds 92a and 92b at the same position. With such a flow, the paper container 70 is formed.
　尚、このような従来の紙容器の製造装置８０では、容器形状にプレス成形する前のブランクシートの一部を軟化等させて、プレス成形時の成形精度を向上させるために、第２金型９２ａ、９２ｂに加熱手段を組み込むことが従来から行われている。 In such a conventional paper container manufacturing apparatus 80, the second mold is used to soften a part of the blank sheet before press-molding into a container shape and improve the molding accuracy at the time of press-molding. Conventionally, a heating means is incorporated in 92a and 92b.
　図１４は、図１２で示した紙容器の製造装置の第２金型を含む部分の概略断面図である。 FIG. 14 is a schematic sectional view of a portion including the second mold of the paper container manufacturing apparatus shown in FIG.
　図を参照して、第２金型９２ａ、９２ｂは、相互に対向する上型部材９３と下型部材９４とをそれぞれ備えている。上型部材９３の外周側には昇降部材９６が配置され、その内部には加熱用ヒーター等からなる加熱部材９７が埋め込まれている。下型部材９４の外周側にはカーリング部材９８が配置されている。 Referring to the drawing, the second molds 92a and 92b include an upper mold member 93 and a lower mold member 94 facing each other. An elevating member 96 is arranged on the outer peripheral side of the upper die member 93, and a heating member 97 such as a heater for heating is embedded in the elevating member 96. A curling member 98 is arranged on the outer peripheral side of the lower mold member 94.
日本国特開２０１１－２１２８８２号公報Japanese Patent Application Laid-Open No. 2011-212882
　上記のような、加熱部材９７を備えた第２金型９２ａ、９２ｂの成形時における動作は次のようになる。 動作 The operation at the time of molding the second molds 92a and 92b having the heating member 97 as described above is as follows.
　図１５は、図１２で示した紙容器の製造装置の第２金型を含む部分の概略断面図であって、加熱工程中の状態を示す図であり、図１６は、図１２で示した紙容器の製造装置の第２金型を含む部分の概略断面図であって、成形工程完了時の状態を示す図である。 FIG. 15 is a schematic cross-sectional view of a portion including the second mold of the apparatus for manufacturing the paper container shown in FIG. 12, showing a state during a heating step. FIG. 16 shows the state shown in FIG. It is a schematic sectional drawing of the part containing the 2nd metal mold | die of the manufacturing apparatus of a paper container, and is a figure which shows the state at the time of completion of a shaping | molding process.
　まず図１５を参照して、第２金型９２ａ全体が降下し、第２金型９２ａの昇降部材９６の下端面とカーリング部材９８の上端面とが移送された原紙７７を挟持し、一定時間停止する。この時、昇降部材９６は加熱部材９７で加熱されているため、原紙７７の昇降部材９６の下端面とカーリング部材９８の上端面とに挟持された部分が加熱される。この加熱される部分は、図１２（２）で示した、罫線７５の一部が含まれる。 First, referring to FIG. 15, the entirety of the second mold 92a is lowered, and the lower end surface of the elevating member 96 of the second mold 92a and the upper end surface of the curling member 98 hold the transferred base paper 77 for a certain period of time. Stop. At this time, since the elevating member 96 is heated by the heating member 97, the portion of the base paper 77 sandwiched between the lower end surface of the elevating member 96 and the upper end surface of the curling member 98 is heated. The heated portion includes a part of the ruled line 75 shown in FIG.
　次に図１６を参照して、この昇降部材９６は、その後カーリング部材９８を押し下げるように更に降下し、図示しない刃部によって、原紙７７からブランクシートを打ち抜く。その後、そのままの位置で第２金型９２ａが更に降下し、打ち抜かれたブランクシートは、上型部材９３の加圧端面と下型部材９４の加圧端面によって容器形状にプレス成形される。その後、更に、そのままの位置で、第２金型９２ａが上昇すると、プレスされたブランクシートの端部に、昇降部材９６とカーリング部材９８とによって形成されたカール溝９９によって縁巻７３が形成される。 Next, referring to FIG. 16, the elevating member 96 is further lowered so as to push down the curling member 98, and a blank sheet is punched out of the base paper 77 by a blade (not shown). Thereafter, the second mold 92a is further lowered at the position as it is, and the blank sheet punched out is press-formed into a container shape by the pressing end surface of the upper die member 93 and the pressing end surface of the lower die member 94. Thereafter, when the second mold 92a is further raised at the same position, the curling groove 99 formed by the elevating member 96 and the curling member 98 forms an edge winding 73 at the end of the pressed blank sheet. You.
　図１７は、上記のような従来の紙容器の製造装置での製造工程における、加熱手段の作動時間と成形手段の作動時間との関係を示す模式図である。 FIG. 17 is a schematic diagram showing the relationship between the operation time of the heating means and the operation time of the molding means in the manufacturing process of the conventional paper container manufacturing apparatus as described above.
　図を参照して、上述したように紙容器の成形の際に、加熱工程と打抜・プレス工程（以下「成形工程」と称す）とは、一つの金型内で行われるため、必ず加熱工程が完了してブランクシートが所定温度に昇温した後に成形工程に進むことになる。すると、１つの紙容器を製造する際には、加熱手段の作動時間αと打抜・プレス手段（以下「成形手段」と称す）の作動時間βとを加えた時間が必ずかかることになる。 Referring to the drawing, as described above, in forming a paper container, the heating step and the punching / pressing step (hereinafter referred to as “forming step”) are performed in one mold, so that the heating step must be performed. After the process is completed and the blank sheet is heated to a predetermined temperature, the process proceeds to the forming process. Then, when one paper container is manufactured, it takes time to add the operation time α of the heating means and the operation time β of the punching / pressing means (hereinafter referred to as “forming means”).
　又、複数の容器を連続的に成形する場合も、先の紙容器（容器１）の成形工程が完了した後に、後の紙容器（容器２）の加熱工程が開始されることから、紙容器１つにつき、加熱手段の作動時間αと成形手段の作動時間βとが必ずかかることになる。そのため、ｎ個の紙容器を製造する際には、加熱手段の作動時間αと成形手段の作動時間βとの合計に、紙容器の個数ｎを乗じた時間Ｔが必ずかかるものと言える。 Also, when a plurality of containers are continuously formed, the heating process of the subsequent paper container (container 2) is started after the forming process of the previous paper container (container 1) is completed. In each case, the operation time α of the heating means and the operation time β of the forming means are necessarily required. Therefore, when manufacturing n paper containers, it can be said that the time T obtained by multiplying the sum of the operation time α of the heating means and the operation time β of the molding means by the number n of paper containers is always required.
　ここで、より多くの紙容器を短時間で成形したい場合には、例えば、加熱手段の作動時間αや成形手段の作動時間βを短くすることが考えられる。しかしながら、被プレス対象の素材や加工を行う金型の構成により、一定の品質の紙容器を製造するために最低限必要な時間は自ずと決まってしまう。もし、適切な時間をかけて加熱工程や成形工程を行わなければ、成形時の成形精度が低下し易くなり、結果として不良品が製造される可能性が高くなる。 Here, when it is desired to form more paper containers in a short time, for example, it is conceivable to shorten the operation time α of the heating means or the operation time β of the forming means. However, depending on the material to be pressed and the configuration of the mold for processing, the minimum time required to produce a paper container of a certain quality is naturally determined. If the heating step and the molding step are not performed for an appropriate period of time, the molding accuracy at the time of molding tends to decrease, and as a result, the possibility of producing defective products increases.
　この発明は、上記のような課題を解決するためになされたもので、紙容器をより短時間で安定的に量産できる、紙容器の製造装置、紙容器の製造方法及び紙容器を提供することを目的とする。 The present invention has been made to solve the above-described problems, and provides a paper container manufacturing apparatus, a paper container manufacturing method, and a paper container capable of stably mass-producing paper containers in a shorter time. With the goal.
　上記の目的を達成するために、この発明の第１の局面における紙容器の製造装置は、少なくとも加熱工程及びこれに続く成形工程によって成形される紙容器の製造装置であって、加熱工程を実施するための加熱手段と、加熱手段で処理された被プレス対象物を移送する移送手段と、移送された被プレス対象物に対して成形工程を実施するための成形手段とを備え、加熱手段は、成形手段の作動時間帯の少なくとも一部を含む時間帯において作動するものである。 In order to achieve the above object, a paper container manufacturing apparatus according to a first aspect of the present invention is a paper container manufacturing apparatus formed by at least a heating step and a subsequent forming step, wherein the heating step is performed. Heating means for performing, a transfer means for transferring the pressed object processed by the heating means, and a forming means for performing a forming step on the transferred pressed object, the heating means , And operates in a time zone including at least a part of the operation time zone of the molding means.
　このように構成すると、加熱手段の作動時間帯と成形手段の作動時間帯との少なくとも一部が重複する。 With this configuration, at least a part of the operation time zone of the heating unit and the operation time zone of the molding unit overlap.
　この発明の第２の局面における紙容器の製造装置は、プレス成形による紙容器の製造装置であって、所望の形状のブランクシートを含む原紙を加熱することができる加熱手段と、加熱された原紙を移送する移送手段と、移送された原紙から、ブランクシートを取得するブランクシート取得手段と、取得されたブランクシートを、プレス加工するプレス手段とを備え、加熱手段は、ブランクシート取得手段及びプレス手段の作動時間帯の少なくとも一部を含む時間帯において作動するものである。 An apparatus for manufacturing a paper container according to the second aspect of the present invention is an apparatus for manufacturing a paper container by press molding, wherein a heating unit capable of heating a base paper including a blank sheet having a desired shape, and a heated base paper Transfer means, a blank sheet obtaining means for obtaining a blank sheet from the transferred base paper, and a press means for pressing the obtained blank sheet, and the heating means includes a blank sheet obtaining means and a press. The device operates in a time zone including at least a part of the operation time zone of the means.
　このように構成すると、加熱手段の作動時間帯とブランクシート取得手段及びプレス手段の作動時間帯との少なくとも一部が重複する。 With such a configuration, at least a part of the operation time period of the heating unit and the operation time period of the blank sheet acquisition unit and the press unit overlap.
　この発明の第３の局面における紙容器の製造装置は、第２の局面における発明の構成において、加熱手段は、ブランクシート取得手段及びプレス手段の作動時間内において作動するものである。 装置 In the apparatus for manufacturing a paper container according to the third aspect of the present invention, in the configuration of the invention according to the second aspect, the heating means operates within the operating time of the blank sheet obtaining means and the pressing means.
　このように構成すると、加熱手段の作動に用いられる時間は、ブランクシート取得手段及びプレス手段による紙容器の製造時間に影響を与えない。 With this configuration, the time used for operating the heating unit does not affect the time required for manufacturing the paper container by the blank sheet acquisition unit and the pressing unit.
　この発明の第４の局面における紙容器の製造装置は、プレス成形による紙容器の製造装置であって、帯状の原紙を供給する原紙供給手段と、供給された原紙の対応する位置に、成形時の皺を吸収するための罫線を形成する罫線形成手段と、罫線が形成された原紙を移送する第１移送手段と、移送された原紙を加熱する加熱手段と、加熱された原紙を移送する第２移送手段と、移送された原紙から、形成された罫線の少なくとも一部を含む所望の形状のブランクシートを打ち抜くブランクシート打抜手段と、打ち抜かれたブランクシートを、その位置でプレス加工するプレス手段とを備え、罫線形成手段及び加熱手段の各々において処理に必要な時間は、ブランクシート打抜手段及びプレス手段において処理に必要な時間と同一であると共に、第１移送手段と第２移送手段とは同期して作動するものである。 An apparatus for manufacturing a paper container according to a fourth aspect of the present invention is an apparatus for manufacturing a paper container by press molding, comprising: a base paper supply means for supplying a strip-shaped base paper; Ruled line forming means for forming ruled lines for absorbing wrinkles, first transfer means for transferring the base paper on which the ruled lines are formed, heating means for heating the transferred base paper, and second transfer means for transferring the heated base paper. (2) Transfer means, blank sheet punching means for punching a blank sheet of a desired shape including at least a part of the formed ruled line from the transferred base paper, and press for pressing the punched blank sheet at that position And the time required for processing in each of the ruled line forming means and the heating means is the same as the time required for processing in the blank sheet punching means and the pressing means, and The first transfer means and second transfer means is to operate synchronously.
　このように構成すると、罫線形成手段及び加熱手段の作動に用いられる時間は、ブランクシート打抜手段及びプレス手段による紙容器のプレス時間に影響を与えない。 With this configuration, the time used for the operation of the ruled line forming means and the heating means does not affect the pressing time of the paper container by the blank sheet punching means and the pressing means.
　この発明の第５の局面における紙容器の製造方法は、紙容器の製造方法であって、第１の局面から第４の局面のいずれかにおける紙容器の製造装置を用いて紙容器を製造するものである。 A method for manufacturing a paper container according to a fifth aspect of the present invention is a method for manufacturing a paper container, wherein the paper container is manufactured using the apparatus for manufacturing a paper container according to any one of the first to fourth aspects. Things.
　このように構成すると、加熱手段の作動時間帯と成形手段の作動時間帯との少なくとも一部が重複する。 With this configuration, at least a part of the operation time zone of the heating unit and the operation time zone of the molding unit overlap.
　この発明の第６の局面における紙容器は、紙容器であって、第１の局面から第４の局面のいずれかにおける紙容器の製造装置により得られるものである。 The paper container according to the sixth aspect of the present invention is a paper container, which is obtained by the paper container manufacturing apparatus according to any one of the first to fourth aspects.
　このように構成すると、加熱手段の作動時間帯と成形手段の作動時間帯との少なくとも一部が重複する。 With this configuration, at least a part of the operation time zone of the heating unit and the operation time zone of the molding unit overlap.
　以上説明したように、この発明の第１の局面における紙容器の製造装置は、加熱手段の作動時間帯と成形手段の作動時間帯との少なくとも一部が重複するため、紙容器の製造時間が実質的に短縮化され、生産効率が向上する。 As described above, in the apparatus for manufacturing a paper container according to the first aspect of the present invention, since at least a part of the operating time period of the heating unit and the operating time period of the forming unit overlap, the manufacturing time of the paper container is reduced. It is substantially shortened and production efficiency is improved.
　この発明の第２の局面における紙容器の製造装置は、加熱手段の作動時間帯とブランクシート取得手段及びプレス手段の作動時間帯との少なくとも一部が重複するため、紙容器の製造時間が実質的に短縮化され、生産効率が向上する。 In the paper container manufacturing apparatus according to the second aspect of the present invention, at least a part of the operation time period of the heating unit and the operation time period of the blank sheet acquisition unit and the pressing unit overlap, so that the manufacturing time of the paper container is substantially reduced. And the production efficiency is improved.
　この発明の第３の局面における紙容器の製造装置は、第２の局面における発明の効果に加えて、加熱手段の作動に用いられる時間は、ブランクシート取得手段及びプレス手段による紙容器の製造時間に影響を与えないため、より生産効率が向上する。 The apparatus for manufacturing a paper container according to the third aspect of the present invention is characterized in that, in addition to the effect of the invention according to the second aspect, the time used for operating the heating means is equal to the time required for manufacturing the paper container by the blank sheet obtaining means and the pressing means. , So that the production efficiency is further improved.
　この発明の第４の局面における紙容器の製造装置は、罫線形成手段及び加熱手段の作動に用いられる時間は、ブランクシート打抜手段及びプレス手段による紙容器のプレス時間に影響を与えないため、紙容器の品質及び生産効率が向上する。 In the paper container manufacturing apparatus according to the fourth aspect of the present invention, the time used for the operation of the ruled line forming means and the heating means does not affect the pressing time of the paper container by the blank sheet punching means and the pressing means. The quality and production efficiency of the paper container are improved.
　この発明の第５の局面における紙容器の製造方法は、加熱手段の作動時間帯と成形手段の作動時間帯との少なくとも一部が重複するため、紙容器の製造時間が実質的に短縮化され、生産効率が向上した紙容器を製造できる。 In the method for manufacturing a paper container according to the fifth aspect of the present invention, at least a part of the operating time period of the heating unit and the operating time period of the forming unit overlap, so that the manufacturing time of the paper container is substantially reduced. Thus, a paper container with improved production efficiency can be manufactured.
　この発明の第６の局面における紙容器は、加熱手段の作動時間帯と成形手段の作動時間帯との少なくとも一部が重複するため、紙容器の製造時間が実質的に短縮化され、生産効率が向上した紙容器となる。 In the paper container according to the sixth aspect of the present invention, at least a part of the operation time period of the heating unit and the operation time period of the molding unit overlap, so that the production time of the paper container is substantially reduced, and the production efficiency is reduced. This results in an improved paper container.
この発明の第１の実施の形態による紙容器の製造装置を示す概略図である。It is a schematic diagram showing a paper container manufacturing device according to a first embodiment of the present invention. 図１で示した紙容器の製造装置であって、プレス加工中の状態を示す概略図である。FIG. 2 is a schematic diagram illustrating a state in which the paper container manufacturing apparatus illustrated in FIG. 1 is under press working. 図１で示した紙容器の製造装置における原紙の加工工程を示す模式図である。FIG. 2 is a schematic diagram illustrating a process of processing base paper in the paper container manufacturing apparatus illustrated in FIG. 1. 図１で示した紙容器の製造装置の第２金型を含む部分の概略断面図である。FIG. 2 is a schematic sectional view of a part including a second mold of the paper container manufacturing apparatus shown in FIG. 1. 図１で示した紙容器の製造装置の第２金型を含む部分の概略断面図であって、打抜工程中の状態を示す図である。FIG. 2 is a schematic sectional view of a part including a second mold of the apparatus for manufacturing a paper container shown in FIG. 1, showing a state during a punching step. 図１で示した紙容器の製造装置の第２金型を含む部分の概略断面図であって、成形完了時の状態を示す図である。FIG. 2 is a schematic cross-sectional view of a portion including a second mold of the apparatus for manufacturing a paper container shown in FIG. 1, showing a state at the time of completion of molding. この発明の第１の実施の形態による紙容器の製造装置での製造工程における、罫線形成手段の作動時間と加熱手段の作動時間と成形手段の作動時間との関係を示す模式図である。FIG. 4 is a schematic diagram illustrating a relationship among an operation time of a ruled line forming unit, an operation time of a heating unit, and an operation time of a forming unit in a manufacturing process of the paper container manufacturing apparatus according to the first embodiment of the present invention. この発明の第１の実施の形態による紙容器の製造装置での製造工程における、加熱手段の作動時間と成形手段の作動時間との関係を示す模式図である。FIG. 3 is a schematic diagram illustrating a relationship between an operation time of a heating unit and an operation time of a molding unit in a manufacturing process of the paper container manufacturing apparatus according to the first embodiment of the present invention. この発明の第２の実施の形態による紙容器の製造装置での製造工程における、加熱手段の作動時間と成形手段の作動時間との関係を示す模式図である。It is a schematic diagram which shows the relationship between the operation time of a heating means and the operation time of a shaping means in the manufacturing process in the manufacturing apparatus of the paper container by 2nd Embodiment of this invention. この発明の第３の実施の形態による紙容器の製造装置での製造工程における、加熱手段の作動時間と成形手段の作動時間との関係を示す模式図である。It is a schematic diagram which shows the relationship between the operating time of a heating means and the operating time of a shaping means in the manufacturing process in the manufacturing apparatus of the paper container by 3rd Embodiment of this invention. 従来の紙容器の外観形状を示す斜視図である。It is a perspective view which shows the external appearance shape of the conventional paper container. 従来の紙容器の製造装置を示す概略図である。It is the schematic which shows the conventional paper container manufacturing apparatus. 図１２で示した紙容器の製造装置における原紙の加工工程を示す模式図である。FIG. 13 is a schematic diagram illustrating a process of processing base paper in the paper container manufacturing apparatus illustrated in FIG. 12. 図１２で示した紙容器の製造装置の第２金型を含む部分の概略断面図である。FIG. 13 is a schematic sectional view of a part including a second mold of the paper container manufacturing apparatus shown in FIG. 12. 図１２で示した紙容器の製造装置の第２金型を含む部分の概略断面図であって、加熱工程中の状態を示す図である。FIG. 13 is a schematic cross-sectional view of a portion including a second mold of the paper container manufacturing apparatus shown in FIG. 12, showing a state during a heating step. 図１２で示した紙容器の製造装置の第２金型を含む部分の概略断面図であって、成形完了時の状態を示す図である。FIG. 13 is a schematic cross-sectional view of a portion including a second mold of the paper container manufacturing apparatus shown in FIG. 12 and shows a state at the time of completion of molding. 従来の紙容器の製造装置での製造工程における、加熱手段の作動時間と成形手段の作動時間との関係を示す模式図である。FIG. 9 is a schematic diagram illustrating a relationship between an operation time of a heating unit and an operation time of a forming unit in a manufacturing process of a conventional paper container manufacturing apparatus.
　図１は、この発明の第１の実施の形態による紙容器の製造装置を示す概略図である。 FIG. 1 is a schematic diagram showing an apparatus for manufacturing a paper container according to the first embodiment of the present invention.
　図を参照して、まず、この実施の形態による紙容器の製造装置１０によって製造される紙容器５０は、図１１で示した従来の紙容器７０と同様の構成である。 Referring to the drawing, first, a paper container 50 manufactured by the paper container manufacturing apparatus 10 according to this embodiment has the same configuration as the conventional paper container 70 shown in FIG.
　又、この実施の形態による紙容器の製造装置１０は、上流側には原紙供給手段である従来のものと同様の原紙５７の供給装置１１を備えており、下流側には成型装置１３を備えている。成型装置１３は一対の上下移動装置１４を備え、その上流側には原紙５７への罫線形成手段である一対の第１金型２１ａ、２１ｂが、又、下流側には原紙５７のブランクシート打抜手段及びプレス手段である一対の第２金型２２ａ、２２ｂが、それぞれ取り付けられている。 Further, the paper container manufacturing apparatus 10 according to this embodiment is provided with a base paper supply unit 11 similar to the conventional one, which is a base paper supply unit, on the upstream side, and a molding unit 13 on the downstream side. ing. The molding device 13 includes a pair of up-and-down moving devices 14, and a pair of first dies 21a and 21b, which are means for forming ruled lines on the base paper 57, on the upstream side, and a blank sheet punching of the base paper 57 on the downstream side. A pair of second molds 22a and 22b serving as a pulling means and a pressing means are respectively attached.
　又、第１金型２１ａ、２１ｂと第２金型２２ａ、２２ｂとの間には、原紙５７の加熱手段であるヒーター等からなる一対の加熱部材２３ａ、２３ｂが配置されている。 一 対 Further, a pair of heating members 23a and 23b including heaters as heating means for the base paper 57 are disposed between the first molds 21a and 21b and the second molds 22a and 22b.
　この実施の形態の紙容器の製造装置１０の動作について、上流側から順に説明する。 The operation of the paper container manufacturing apparatus 10 according to this embodiment will be described in order from the upstream side.
　図２は、図１で示した紙容器の製造装置であって、プレス加工中の状態を示す概略図である。又、図３は、図１で示した紙容器の製造装置における原紙の加工工程を示す模式図であって、（１）は原紙供給位置（Ａ１）直後の状態を示すものであり、（２）は罫線形成位置（Ａ２）から打抜・プレス加工位置（Ａ３）までの各状態を示すものであり、（３）は打抜・プレス加工位置（Ａ３）直後の状態を示すものである。 FIG. 2 is a schematic view showing a state of the paper container manufacturing apparatus shown in FIG. 1 during press working. FIG. 3 is a schematic diagram showing a base paper processing step in the paper container manufacturing apparatus shown in FIG. 1, wherein (1) shows a state immediately after the base paper supply position (A1), and (2) ) Shows each state from the ruled line forming position (A2) to the punching / pressing position (A3), and (3) shows the state immediately after the punching / pressing position (A3).
　これらの図を参照して、まず原紙供給位置Ａ１に配置されたロール状に巻回された帯状の原紙５７は、供給装置１１によって表面のコーティング処理等がされた後、供給装置１１の下流側の成型装置１３へ連続的に供給される。 With reference to these drawings, first, a strip-shaped base paper 57 wound in a roll shape disposed at a base paper supply position A1 is subjected to a surface coating process or the like by the supply device 11, and then downstream of the supply device 11. Is continuously supplied to the molding device 13.
　次に、供給された原紙５７は、成型装置１３の罫線形成位置Ａ２で、第１金型２１ａ、２１ｂによって、図３の（２）のＡ２で示すように成形時の皺を吸収するための罫線５５が所定の位置に形成される。罫線５５が形成された原紙５７は、次に加熱加工位置Ｈまで図示しない第１移送手段によって移送される。 Next, the supplied base paper 57 is used by the first molds 21a and 21b at the ruled line forming position A2 of the molding device 13 to absorb wrinkles during molding as indicated by A2 in FIG. 3 (2). Ruled lines 55 are formed at predetermined positions. The base paper 57 on which the ruled lines 55 are formed is then transferred to a heating processing position H by a first transfer unit (not shown).
　更に、移送された原紙５７は、加熱加工位置Ｈで、加熱部材２３ａ、２３ｂによって挟持される。これにより、図３の（２）のＨにおいて、二点鎖線で示すような罫線５５を含む略正方形形状の部分のほぼ全体が加熱される。こうすることで、従来の加熱工程よりもより広範囲が加熱されることにより、後の打抜・プレス加工時の成形精度の向上につながる。加熱された原紙５７は、次に打抜・プレス加工位置Ａ３まで図示しない第２移送手段によって移送される。 {Circle around (5)} The transferred base paper 57 is held between the heating members 23a and 23b at the heating processing position H. As a result, in H of FIG. 3B, substantially the entire substantially square portion including the ruled line 55 as indicated by the two-dot chain line is heated. By doing so, a wider area is heated than in the conventional heating step, which leads to an improvement in the molding accuracy at the time of subsequent punching and press working. The heated base paper 57 is then transferred by a second transfer means (not shown) to a punching / pressing position A3.
　更に、移送された原紙５７は、打抜・プレス加工位置Ａ３で、第２金型２２ａ、２２ｂによって、図３の（２）のＡ３及び（３）に示すように、まず加熱されたブランクシート５８が破線で示すような罫線の少なくとも一部を含む略正方形形状等の所望の形状に打ち抜かれる。次に、そのままの位置で、第２金型２２ａ、２２ｂによって、打ち抜かれたブランクシート５８が容器形状にプレス加工され、紙容器５０は成形される。 Further, as shown in A3 and (3) of FIG. 3B, the transferred base paper 57 is first heated by the second molds 22a and 22b at the punching / pressing position A3. 58 is punched into a desired shape such as a substantially square shape including at least a part of a ruled line as shown by a broken line. Next, the blank sheet 58 punched out is pressed into a container shape by the second molds 22a and 22b as it is, and the paper container 50 is formed.
　この時、罫線形成手段である第１金型２１ａ、２１ｂ及び加熱手段である加熱部材２３ａ、２３ｂの各々において処理に必要な時間は、ブランクシート打抜手段及びプレス手段である第２金型２２ａ、２２ｂにおいて処理に必要な時間と同一である。 At this time, the time required for processing in each of the first molds 21a and 21b as the ruled line forming means and the heating members 23a and 23b as the heating means is determined by the blank mold punching means and the second mold 22a as the pressing means. , 22b is the same as the time required for processing.
　尚、上記のように、罫線形成手段、加熱手段及び打抜・プレス手段は、それぞれ独立した位置で作動する。しかしながら、第１金型２１ａ、２１ｂ及び第２金型２２ａ、２２ｂは一対の上下移動装置１４に取り付けられると共に、加熱部材２３ａ、２３ｂは、第１金型２１ａ、２１ｂと第２金型２２ａ、２２ｂとの間に配置されており、各手段は同期して作動するものである。又、第１移送手段と第２移送手段を含む全体の移送手段についてもそれぞれ同期して作動するものである。そして、紙容器の製造装置１０全体としては、同期した罫線形成、加熱及び打抜・プレスによる各加工工程と同期した各移送工程とが交互に作動するものである。 As described above, the ruled line forming means, the heating means, and the punching / pressing means operate at independent positions. However, the first molds 21a, 21b and the second molds 22a, 22b are attached to the pair of vertical movement devices 14, and the heating members 23a, 23b are connected to the first molds 21a, 21b and the second mold 22a, 22b, and each means operates synchronously. Further, the entire transfer means including the first transfer means and the second transfer means operate in synchronization with each other. In the paper container manufacturing apparatus 10 as a whole, synchronously forming ruled lines, heating, punching and pressing, and each processing step and each synchronously transferring step are alternately operated.
　ここで、この実施の形態における紙容器の製造装置１０の打抜・プレス加工位置Ａ３における第２金型２２ａ、２２ｂの具体的な動作を従来のものと比較すると次のようになる。 Here, the specific operation of the second molds 22a and 22b at the punching / pressing position A3 of the paper container manufacturing apparatus 10 in this embodiment is as follows when compared with the conventional one.
　図４は、図１で示した紙容器の製造装置の第２金型を含む部分の概略断面図である。 FIG. 4 is a schematic sectional view of a part including the second mold of the paper container manufacturing apparatus shown in FIG.
　図を参照して、この実施の形態による第２金型２２ａ、２２ｂは、図１３で示した従来の第２金型９２ａ、９２ｂから加熱部材９７を除いた構成であり、その他の部材は従来の第２金型９２ａ、９２ｂと共通しているのでここでの説明は繰り返さない。 Referring to the drawings, second molds 22a and 22b according to this embodiment have a configuration in which heating member 97 is removed from conventional second molds 92a and 92b shown in FIG. Of the second molds 92a and 92b, and the description thereof will not be repeated.
　図５は、図１で示した紙容器の製造装置の第２金型を含む部分の概略断面図であって、打抜工程中の状態を示す図である。 FIG. 5 is a schematic cross-sectional view of a portion including the second mold of the paper container manufacturing apparatus shown in FIG. 1 and shows a state during a punching step.
　図を参照して、図４の状態から従来と同様に第２金型２２ａが降下する。その際、移送された原紙５７は既に加熱部材２３ａ、２３ｂによって加熱されている。そのため、原紙５７を挟持した第２金型２２ａ、２２ｂの昇降部材３６とカーリング部材３８とは、原紙５７の加熱のために従来のように一定時間停止する必要はなく、そのまま降下を続け、原紙５７からブランクシート５８を打ち抜く。 Referring to the figure, the second mold 22a descends from the state of FIG. At that time, the transferred base paper 57 has already been heated by the heating members 23a and 23b. Therefore, the raising / lowering member 36 and the curling member 38 of the second molds 22a and 22b holding the base paper 57 do not need to be stopped for a predetermined time to heat the base paper 57 as in the related art. A blank sheet 58 is punched from 57.
　図６は、図１で示した紙容器の製造装置の第２金型を含む部分の概略断面図であって、成形完了時の状態を示す図である。 FIG. 6 is a schematic cross-sectional view of a portion including the second mold of the paper container manufacturing apparatus shown in FIG. 1 and shows a state at the time of completion of molding.
　図を参照して、ブランクシート５８を打ち抜いた位置から第２金型２２ａが更に降下し、打ち抜かれたブランクシート５８は、第２金型２２ａの上型部材３３の加圧端面と第２金型２２ｂの下型部材３４の加圧端面によって容器形状にプレス成形される。その後、更に、そのままの位置で、第２金型２２ａが上昇すると、プレスされたブランクシート５８の端部に、第２金型２２ａ、２２ｂの昇降部材３６とカーリング部材３８とによって形成されたカール溝３９によって縁巻５３が形成される。 Referring to the figure, the second mold 22a further descends from the position where the blank sheet 58 has been punched out, and the blank sheet 58 that has been punched out is pressed against the pressing end surface of the upper mold member 33 of the second mold 22a and the second mold 22a. The pressing end surface of the lower mold member 34 of the mold 22b is press-formed into a container shape. Thereafter, when the second mold 22a is further raised at the same position, the curl formed by the lifting member 36 and the curling member 38 of the second molds 22a and 22b is formed on the end of the pressed blank sheet 58. The groove 39 forms an edge winding 53.
　図７は、この発明の第１の実施の形態による紙容器の製造装置での製造工程における、罫線形成手段の作動時間と加熱手段の作動時間と成形手段の作動時間との関係を示す模式図である。 FIG. 7 is a schematic diagram showing the relationship among the operating time of the ruled line forming means, the operating time of the heating means, and the operating time of the forming means in the manufacturing process of the paper container manufacturing apparatus according to the first embodiment of the present invention. It is.
　尚、この図７では、第１移送手段及び第２移送手段の作動時間については記載を省略している。 In FIG. 7, the operation times of the first transfer means and the second transfer means are not described.
　図を参照して、上述したように、罫線形成手段において処理に必要な時間から導き出される罫線形成手段の作動時間γと、加熱手段において処理に必要な時間から導き出される加熱手段の作動時間αとは、ブランクシート打抜手段及びプレス手段（以下、「成形手段」と称す）において処理に必要な時間である成形手段の作動時間βと同一である。又、罫線形成工程、加熱工程、打抜・プレス工程（以下「成形工程」と称す）とはそれぞれ同期して作動する。 Referring to the figure, as described above, the operation time γ of the ruled line forming means derived from the time required for processing in the ruled line forming means, and the operation time α of the heating means derived from the time required for processing in the heating means. Is the same as the operating time β of the forming means, which is the time required for processing in the blank sheet punching means and pressing means (hereinafter referred to as “forming means”). Further, the ruled line forming step, the heating step, and the punching / pressing step (hereinafter, referred to as “forming step”) operate in synchronization with each other.
　すなわち、原紙の先の紙容器（容器１）に係る部分が、罫線形成工程及び加熱工程を経て、成形工程を開始する際に、原紙の後の紙容器（容器２）に係る部分が加熱工程を開始することになる。又、原紙の更に後の紙容器（容器３）に係る部分が罫線形成工程を開始することになる。すると、１つ目の紙容器を製造する際には、罫線形成手段の作動時間γと、加熱手段の作動時間αと、成形手段の作動時間βとを加えた時間が必ずかかることになるが、複数の紙容器を連続的に成形する場合には、容器１の成形工程中に容器２の加熱工程及び容器３の罫線形成工程が行われ、容器１の成形工程が完了した後に容器２の成形工程及び容器３の加熱工程が開始される。これにより、２つ目以降の紙容器を製造する際には、実質的には成形手段の作動時間βのみがかかることになる。そのため、ｎ個の紙容器を製造する際には、１つ目の容器の罫線形成手段の作動時間γと、加熱手段の作動時間αと、成形手段の作動時間βとを加えたものに、成形手段の作動時間βに２つ目以降の紙容器の個数（ｎ－１）を乗じた時間を更に合わせたＴ１がかかるものと言える。 That is, when the portion related to the paper container (container 1) ahead of the base paper goes through the ruled line forming step and the heating step and starts the forming process, the part related to the paper container (container 2) after the base paper is heated Will start. In addition, the portion related to the paper container (container 3) further after the base paper starts the ruled line forming step. Then, when the first paper container is manufactured, it takes time to add the operation time γ of the ruled line forming means, the operation time α of the heating means, and the operation time β of the forming means. In the case where a plurality of paper containers are continuously formed, a heating process of the container 2 and a crease forming process of the container 3 are performed during the forming process of the container 1, and after the forming process of the container 1, the The molding step and the step of heating the container 3 are started. As a result, when manufacturing the second and subsequent paper containers, substantially only the operating time β of the molding means is required. Therefore, when manufacturing n paper containers, the operation time γ of the ruled line forming means of the first container, the operation time α of the heating means, and the operation time β of the forming means are added, it can be said that T 1 which further combined time obtained by multiplying the second and subsequent number of cartons (n-1) to the operation time β of the molding means take.
　このように、全体的な製造時間において、罫線形成手段の作動時間γ及び加熱手段の作動時間αは、成形手段の作動時間βに影響を与えないため、紙容器の品質及び生産効率が向上するものとなる。 As described above, in the overall manufacturing time, the operation time γ of the ruled line forming means and the operation time α of the heating means do not affect the operation time β of the forming means, so that the quality and production efficiency of the paper container are improved. It will be.
　尚、従来の製造装置との比較のために、加熱手段の作動時間α及び成形手段の作動時間βのみを抜き出して更に説明する。 Note that, for comparison with a conventional manufacturing apparatus, only the operation time α of the heating means and the operation time β of the forming means are extracted and further described.
　図８は、この発明の第１の実施の形態による紙容器の製造装置での製造工程における、加熱手段の作動時間と成形手段の作動時間との関係を示す模式図である。 FIG. 8 is a schematic diagram showing the relationship between the operating time of the heating means and the operating time of the forming means in the manufacturing process of the paper container manufacturing apparatus according to the first embodiment of the present invention.
　図を参照して、原紙の先の紙容器（容器１）に係る部分が、加熱工程を経て、成形工程を開始する際に、原紙の後の紙容器（容器２）に係る部分が加熱工程を開始することになる。すると、１つ目の紙容器を製造する際には、加熱手段の作動時間αと、成形手段の作動時間βとを加えた時間が必ずかかることになるが、複数の紙容器を連続的に成形する場合には、容器１の成形工程中に容器２の加熱工程が行われ、容器１の成形工程が完了した後に容器２の成形工程及び容器３の加熱工程が開始される。これにより、２つ目以降の紙容器を製造する際には、実質的には成形手段の作動時間βのみがかかることになる。そのため、ｎ個の紙容器を製造する際に要する時間Ｔ２は、１つ目の容器の加熱手段の作動時間αと、成形手段の作動時間βとを加えたものに、成形手段の作動時間βに２つ目以降の紙容器の個数（ｎ－１）を乗じた時間を更に加えた時間がかかるものと言える。 Referring to the figure, when the part related to the paper container (container 1) ahead of the base paper goes through the heating step and starts the forming step, the part related to the paper container (container 2) after the base paper is heated. Will start. Then, when manufacturing the first paper container, it always takes time to add the operation time α of the heating means and the operation time β of the molding means, but a plurality of paper containers are continuously In the case of molding, the heating process of the container 2 is performed during the molding process of the container 1, and after the molding process of the container 1 is completed, the molding process of the container 2 and the heating process of the container 3 are started. As a result, when manufacturing the second and subsequent paper containers, substantially only the operating time β of the molding means is required. Therefore, the time T 2 required for the manufacture of the n paper containers, a plus and operating time α of the first container of the heating means, and operating time of the molding means beta, operating time of the forming means It can be said that it takes time to add a time obtained by multiplying β by the number (n−1) of the second and subsequent paper containers.
　すなわち、ｎ個の紙容器を製造する際に要する時間Ｔ２は、
　Ｔ２＝（α+β）+β（ｎ－１）=α+βｎとなる。 That is, the time T 2 required for the manufacture of the n paper container,
T 2 = (α + β) + β (n-1) = α + βn.
　一方、従来の図１７に示した時間Ｔは、
　Ｔ＝ｎ（α+β）=αｎ+βｎとなる。 On the other hand, the time T shown in FIG.
T = n (α + β) = αn + βn.
　よって、
　Ｔ２－Ｔ＝（α+βｎ）－（αｎ+βｎ）＝－α（ｎ－１）となり、そこから
　Ｔ２＝Ｔ－α（ｎ－１）という関係が導き出される。 Therefore,
T 2 −T = (α + βn) − (αn + βn) = − α (n−1), from which the relationship T 2 = T−α (n−1) is derived.
　これは従来の製造装置と比較すると、２つ目以降の紙容器の加熱工程にかかる時間が実質的に不要とされることを意味し、結果として製造全体に係る時間も短縮されると言える。 This means that the time required for the heating process of the second and subsequent paper containers is substantially unnecessary compared to the conventional manufacturing apparatus, and as a result, the time required for the entire manufacturing can be shortened.
　このように、加熱手段及び成形手段のみを考慮した場合でも、全体的な製造時間において、加熱手段の作動時間αは、成形手段の作動時間βに影響を与えないため、より生産効率が向上するものとなる。 As described above, even when only the heating unit and the forming unit are considered, in the overall manufacturing time, the operating time α of the heating unit does not affect the operating time β of the forming unit, so that the production efficiency is further improved. It will be.
　図９は、この発明の第２の実施の形態による紙容器の製造装置での製造工程における、加熱手段の作動時間と成形手段の作動時間との関係を示す模式図である。 FIG. 9 is a schematic diagram showing the relationship between the operation time of the heating means and the operation time of the forming means in the manufacturing process of the paper container manufacturing apparatus according to the second embodiment of the present invention.
　尚、この第２の実施の形態による紙容器の製造装置の構成は、基本的には第１の実施の形態と同様であるため、ここでの説明は繰り返さず、その相違点を中心に説明する。 Since the configuration of the paper container manufacturing apparatus according to the second embodiment is basically the same as that of the first embodiment, the description will not be repeated here, and the differences will be mainly described. I do.
　図を参照して、この第２の実施の形態による加熱手段の作動時間αは、成形手段の作動時間βよりも長く設定されているものである。このような設定にすると、全体的に時間をかけて加熱することで原紙がまんべんなく温まり、より成形に適切な柔らかさや水分を保持した状態となるため、更に紙容器の成形精度が向上する。 Referring to the drawing, the operation time α of the heating means according to the second embodiment is set longer than the operation time β of the forming means. With such a setting, the base paper is heated evenly over time as a whole, so that the base paper is evenly heated, and a state in which softness and moisture suitable for forming are maintained, so that the forming accuracy of the paper container is further improved.
　尚、従来の製造装置との比較のために、罫線形成手段の作動時間についての記載は省略し、加熱手段及び成形手段の関係について説明する。 Note that, for comparison with a conventional manufacturing apparatus, the description of the operation time of the ruled line forming means is omitted, and the relationship between the heating means and the forming means will be described.
　まず、原紙の先の紙容器（容器１）に係る部分が、加熱工程を経て成形工程を開始する際に、原紙の後の紙容器（容器２）に係る部分が、加熱工程を開始することは第１の実施の形態と同様である。そして、１つ目の紙容器を製造する際には、加熱手段の作動時間αと、成形手段の作動時間βとを加えた時間が必ずかかることも第１の実施の形態と同様である。 First, when the portion related to the paper container (container 1) ahead of the base paper starts the forming process via the heating process, the portion related to the paper container (container 2) after the base paper starts the heating process. Are the same as in the first embodiment. Also, when manufacturing the first paper container, it is always necessary to add the operation time α of the heating means and the operation time β of the forming means, as in the first embodiment.
　次に、複数の紙容器を連続的に成形する場合には、容器１の成形工程中に容器２の加熱工程が開始されるが、加熱手段の作動時間αが成形手段の作動時間βよりも長いため、容器１の成形工程が完了した後にすぐに容器２の成形工程が始めるのではなく、容器２の加熱工程が完了するのを待ってから、容器２の成形工程及び容器３の加熱工程が開始される。そのため、成形工程の後には待機時間ｘが発生し、加熱手段は、成形手段の作動時間帯の少なくとも一部を含む時間において作動することになる。 Next, when a plurality of paper containers are continuously molded, the heating process of the container 2 is started during the molding process of the container 1. However, the operation time α of the heating means is longer than the operation time β of the molding means. Because of the length, the molding process of the container 2 does not start immediately after the molding process of the container 1 is completed, but rather waits for the completion of the heating process of the container 2 before the molding process of the container 2 and the heating process of the container 3 Is started. Therefore, a standby time x occurs after the molding step, and the heating means operates during a time including at least a part of the operation time zone of the molding means.
　尚、この成形手段の作動時間βに待機時間ｘを加えた時間は、加熱手段の作動時間αと同一になる。 The time obtained by adding the standby time x to the operating time β of the molding means is the same as the operating time α of the heating means.
　これにより、２つ目以降の紙容器を製造する際には、成形手段の作動時間βに待機時間ｘを加えた時間が実質的にかかることになる。そのため、ｎ個の紙容器を製造する際に要する時間Ｔ３は、１つ目の容器の加熱手段の作動時間αと成形手段の作動時間βとを加えたものに、成形手段の作動時間βと待機時間ｘとを合わせた時間に２つ目以降の紙容器の個数（ｎ－１）を乗じた時間とを更に加えた時間がかかるものと言える。 As a result, when manufacturing the second and subsequent paper containers, it takes substantially the time obtained by adding the standby time x to the operating time β of the molding means. Therefore, the time T 3 required for the manufacture of the n paper containers, a plus and operating time of the first operation time α and the molding means of the heating means of the container beta, operating time of the molding means beta It can be said that it takes a time obtained by further adding a time obtained by multiplying the sum of the waiting time x and the number (n−1) of the second and subsequent paper containers.
　すなわち、ｎ個の紙容器を製造する際に要する時間Ｔ３は、
　Ｔ３＝（α+β）+（β＋ｘ）（ｎ－１）=（α+β）+α（ｎ－１）＝αｎ+βとなる。 That is, the time T 3 required for the manufacture of the n paper container,
T 3 = (α + β) + (β + x) (n−1) = (α + β) + α (n−1) = αn + β
　一方、従来の図１７に示した時間Ｔは、第１の実施の形態と同様、
　Ｔ＝ｎ（α+β）=αｎ+βｎとなる。 On the other hand, the time T shown in FIG. 17 of the related art is the same as in the first embodiment.
T = n (α + β) = αn + βn.
　よって、
　Ｔ３－Ｔ＝（αｎ+β）－（αｎ+βｎ）＝－β（ｎ－１）となり、そこから
　Ｔ３＝Ｔ－β（ｎ－１）という関係が導き出される。 Therefore,
T 3 −T = (αn + β) − (αn + βn) = − β (n−1), from which a relationship of T 3 = T−β (n−1) is derived.
　これは、従来の製造装置と比較すると、２つ目以降の紙容器の加熱工程の内、成形工程に対応する時間が実質的に不要とされることを意味し、結果として製造全体に係る時間も従来のものよりは実質的に短縮されると言える。 This means that, in comparison with the conventional manufacturing apparatus, the time corresponding to the molding step in the heating step of the second and subsequent paper containers is substantially unnecessary, and as a result, the time required for the entire manufacturing is reduced. Can be said to be substantially shorter than the conventional one.
　このように、加熱手段の作動時間αと成形手段の作動時間βとの少なくとも一部が重複するため、紙容器の製造時間が実質的に短縮化され、生産効率が向上するものとなる。 As described above, since at least a part of the operating time α of the heating means and the operating time β of the forming means overlap, the manufacturing time of the paper container is substantially shortened, and the production efficiency is improved.
　図１０は、この発明の第３の実施の形態による紙容器の製造装置での製造工程における、加熱手段の作動時間と成形手段の作動時間との関係を示す模式図である。 FIG. 10 is a schematic diagram showing the relationship between the operation time of the heating means and the operation time of the forming means in the manufacturing process of the paper container manufacturing apparatus according to the third embodiment of the present invention.
　尚、この第３の実施の形態による紙容器の製造装置の構成は、基本的には第１の実施の形態と同様であるため、ここでの説明は繰り返さず、その相違点を中心に説明する。 Note that the configuration of the paper container manufacturing apparatus according to the third embodiment is basically the same as that of the first embodiment, and thus the description will not be repeated here, and the differences will be mainly described. I do.
　図を参照して、この第３の実施の形態による加熱手段の作動時間αは、成形手段の作動時間βよりも短く設定されているものである。大容量のヒーター等では原紙が素早く温まる傾向にあるため、より成形に適切な柔らかさや水分保有量とするために、このような時間調整を行うことがある。 Referring to the drawing, the operation time α of the heating means according to the third embodiment is set shorter than the operation time β of the forming means. With a large-capacity heater or the like, the base paper tends to warm quickly, and thus such time adjustment may be performed in order to obtain softness and water retention more suitable for molding.
　尚、従来の製造装置との比較のために、罫線形成手段の作動時間についての記載は省略し、加熱手段及び成形手段の関係について説明する。 Note that, for comparison with a conventional manufacturing apparatus, the description of the operation time of the ruled line forming means is omitted, and the relationship between the heating means and the forming means will be described.
　まず、原紙の先の紙容器（容器１）に係る部分に、加熱工程を経て成形工程が行われる際に、原紙の後の紙容器（容器２）に係る部分に、加熱工程が行われることは第１の実施の形態と同様である。そして、１つ目の紙容器を製造する際には、加熱手段の作動時間αと、成形手段の作動時間βとを加えた時間が必ずかかることも第１の実施の形態と同様である。 First, when the forming process is performed on the portion related to the paper container (container 1) ahead of the base paper through the heating process, the heating process is performed on the portion related to the paper container (container 2) after the base paper. Are the same as in the first embodiment. Also, when manufacturing the first paper container, it is always necessary to add the operation time α of the heating means and the operation time β of the forming means, as in the first embodiment.
　次に、複数の紙容器を連続的に成形する場合には、容器１の成形工程中に容器２の加熱工程が開始されるが、加熱手段の作動時間αが成形手段の作動時間βよりも短いため、容器１の成形工程の途中から成形工程の完了時に合わせて、容器２の加熱工程が行われる。同様に、容器２の成形工程の途中から容器３の加熱工程が開始される。そのため、加熱手段は、成形手段の作動時間内において作動することになる。 Next, when a plurality of paper containers are continuously molded, the heating process of the container 2 is started during the molding process of the container 1, and the operation time α of the heating means is longer than the operation time β of the molding means. Because of the short length, the heating process of the container 2 is performed from the middle of the forming process of the container 1 to the completion of the forming process. Similarly, the heating step of the container 3 is started during the molding step of the container 2. Therefore, the heating means operates within the operating time of the forming means.
　これにより、２つ目以降の紙容器を製造する際には、加熱手段の作動時間αと比較して長い成形手段の作動時間βが実質的にかかることになる。そのため、ｎ個の紙容器を製造する際に要する時間Ｔ４は、１つ目の容器の加熱手段の作動時間αと、成形手段の作動時間βとを加えたものに、成形手段の作動時間βに２つ目以降の紙容器の個数（ｎ－１）を乗じた時間を更に加えた時間がかかるものと言える。 As a result, when manufacturing the second and subsequent paper containers, the operating time β of the molding means is substantially longer than the operating time α of the heating means. Therefore, the time T 4 required for the manufacture of the n paper containers, a plus and operating time α of the first container of the heating means, and operating time of the molding means beta, operating time of the forming means It can be said that it takes time to add a time obtained by multiplying β by the number (n−1) of the second and subsequent paper containers.
　すなわち、ｎ個の紙容器を製造する際に要する時間Ｔ４は、
　Ｔ４＝（α+β）+β（ｎ－１）=α+βｎとなる。 That is, the time T 4 required for the manufacture of the n paper container,
T 4 = (α + β) + β (n-1) = α + βn.
　一方、従来の図１７に示した時間Ｔは、第１の実施の形態と同様、
　Ｔ＝ｎ（α+β）=αｎ+βｎとなる。 On the other hand, the time T shown in FIG. 17 of the related art is the same as in the first embodiment.
T = n (α + β) = αn + βn.
　よって、
　Ｔ４－Ｔ＝（α+βｎ）－（αｎ+βｎ）＝－α（ｎ－１）となり、そこから
　Ｔ４＝Ｔ－α（ｎ－１）という関係が導き出される。 Therefore,
T 4 −T = (α + βn) − (αn + βn) = − α (n−1), from which the relationship T 4 = T−α (n−1) is derived.
　これは従来の製造装置と比較すると、第１の実施の形態と同様に、２つ目以降の紙容器の加熱工程にかかる時間が実質的に不要とされることを意味し、結果として製造全体に係る時間も短縮されると言える。 This means that the time required for the heating step of the second and subsequent paper containers is substantially unnecessary, as in the first embodiment, as compared with the conventional manufacturing apparatus, and as a result, the entire manufacturing Can be shortened.
　このように、加熱手段の作動時間αと成形手段の作動時間βとの少なくとも一部が重複するため、紙容器の製造時間が実質的に短縮化され、生産効率が向上するものとなる。又、全体的な製造時間において、加熱手段の作動時間αは、成形手段の作動時間βに影響を与えないため、より生産効率が向上する。 As described above, since at least a part of the operating time α of the heating means and the operating time β of the forming means overlap, the manufacturing time of the paper container is substantially shortened, and the production efficiency is improved. Further, in the overall manufacturing time, the operating time α of the heating means does not affect the operating time β of the molding means, so that the production efficiency is further improved.
　尚、上記の各実施の形態では、被プレス対象物は、帯状の原紙をブランクシートに打ち抜いて成形加工する構成であったが、紙容器を製造できるものであれば、被プレス対象物の取得手段はそれに限らず、他の方法であってもよい。 In each of the above-described embodiments, the object to be pressed is formed by punching a band-shaped base paper into a blank sheet and molding the sheet. However, if a paper container can be manufactured, the object to be pressed can be obtained. The means is not limited thereto, and may be another method.
　又、上記の各実施の形態では、帯状の原紙からブランクシートを打ち抜く構成であったが、これに限らず、初めから所望の形状に形成されたブランクシートを準備する構成等、別の方法からなるブランクシート取得手段を備えた構成であってもよい。 Further, in each of the above-described embodiments, the blank sheet is punched out of the strip-shaped base paper. However, the present invention is not limited to this, and another method such as a configuration of preparing a blank sheet formed into a desired shape from the beginning may be used. May be provided with blank sheet acquisition means.
　更に、上記の各実施の形態では、成形手段はブランクシート打抜手段とプレス手段とから構成されていたが、これに限らない。上記のようなブランクシート取得手段とプレス手段とから構成されるものであってもよいし、加熱した素材を加工して紙容器を成形するものであれば、別の手段によるものであってもよい。 Further, in each of the above embodiments, the forming means is constituted by the blank sheet punching means and the pressing means, but is not limited to this. It may be constituted by a blank sheet acquiring means and a pressing means as described above, or may be formed by another means as long as the heated material is processed to form a paper container. Good.
　更に、上記の各実施の形態では、加熱前の成形に対しては加熱手段を独立して設ける構成であるため、成形手段には加熱手段を設けない構成であった。一方、成形後の保形性の向上を目的として加熱工程を追加するためには、加熱部材を成形手段にも補助的に設ける構成としてもよい。 Further, in each of the above embodiments, the heating means is provided independently for the molding before heating, and thus the heating means is not provided in the molding means. On the other hand, in order to add a heating step for the purpose of improving shape retention after molding, a configuration may be adopted in which a heating member is additionally provided in the molding means.
　更に、上記の各実施の形態では、加熱工程と成形工程とが続けて行われる構成であったが、これに限らず、加熱手段を罫線形成手段の前に配置する構成としてもよい。又、加熱手段を罫線形成手段の中に組み込む構成としてもよい。 Further, in each of the above embodiments, the heating step and the forming step are performed successively. However, the present invention is not limited to this, and the heating means may be arranged before the ruled line forming means. Further, the heating means may be incorporated in the ruled line forming means.
　更に、上記の各実施の形態では、加熱部分は略正方形形状の全体に行うものであったが、これに限らず、特定の一部分のみを加熱するようにしてもよい。 Further, in each of the above embodiments, the heating portion is performed on the entire substantially square shape. However, the present invention is not limited to this, and only a specific portion may be heated.
　更に、上記の第３の実施の形態では、成形工程の途中から成形工程の完了に合わせる時間帯で加熱工程を開始する構成であったが、これに限らない。成形工程と加熱工程を同時に開始し、一定時間加熱したら成形工程を開始するまで待機する構成としてもよい。 Further, in the third embodiment described above, the heating step is started from the middle of the molding step in a time period corresponding to the completion of the molding step. However, the present invention is not limited to this. The configuration may be such that the molding step and the heating step are started at the same time, and after heating for a certain period of time, the apparatus stands by until the molding step is started.
　更に、上記の各実施の形態では、罫線形成手段である第１金型と、成形手段である第２金型とが一対の上下移動装置に取り付けられ、その間に配置された加熱手段である加熱部材は独立した構成であったが、これに限らない。加熱部材も併せて上下移動装置に取り付ける構成としてもよいし、逆に各手段をそれぞれ独立した移動装置に取り付ける構成としてもよい。 Further, in each of the above embodiments, the first mold as the ruled line forming means and the second mold as the molding means are attached to a pair of up and down moving devices, and the heating means as the heating means disposed therebetween. Although the members have an independent configuration, they are not limited to this. The heating member may also be attached to the vertical moving device, or conversely, each unit may be attached to an independent moving device.
　更に、上記の各実施の形態は、紙容器の製造装置に関するものであったが、上記の各実施の形態の紙容器の製造装置を用いて紙容器を製造する方法についての実施の形態としても同様に適用できる。 Further, each of the embodiments described above relates to a paper container manufacturing apparatus. However, the embodiments described above also relate to a method of manufacturing a paper container using the paper container manufacturing apparatus of each of the above embodiments. The same applies.
　更に、上記の各実施の形態は、紙容器の製造装置に関するものであったが、上記の各実施の形態の紙容器の製造装置により得られる紙容器についての実施の形態としても同様に適用できる。 Further, each of the embodiments described above relates to a paper container manufacturing apparatus, but can be similarly applied to the embodiment of a paper container obtained by the paper container manufacturing apparatus of each of the above embodiments. .
　以上のように、本発明に係る紙容器の製造装置、紙容器の製造方法及び紙容器によれば、食品等の収納に好適に用いることができる収納容器が得られる。 As described above, according to the apparatus for manufacturing a paper container, the method for manufacturing a paper container, and the paper container according to the present invention, a storage container that can be suitably used for storing food and the like can be obtained.

Claims (6)

  1. 　少なくとも加熱工程及びこれに続く成形工程によって成形される紙容器の製造装置（１０）であって、
    　前記加熱工程を実施するための加熱手段（２３ａ、２３ｂ）と、
    　前記加熱手段で処理された被プレス対象物（５７、５８）を移送する移送手段と、
    　前記移送された被プレス対象物に対して前記成形工程を実施するための成形手段（２２ａ、２２ｂ）とを備え、
    　前記加熱手段は、前記成形手段の作動時間帯の少なくとも一部を含む時間帯において作動する、紙容器の製造装置。     An apparatus (10) for producing a paper container formed by at least a heating step and a subsequent forming step,
    Heating means (23a, 23b) for performing the heating step;
    Transferring means for transferring the pressed object (57, 58) processed by the heating means;
    Forming means (22a, 22b) for performing the forming step on the transferred object to be pressed;
    The apparatus for manufacturing a paper container, wherein the heating means operates in a time zone including at least a part of an operation time zone of the molding means.
  2. 　プレス成形による紙容器の製造装置（１０）であって、
    　所望の形状のブランクシート（５８）を含む原紙（５７）を加熱することができる加熱手段（２３ａ、２３ｂ）と、
    　前記加熱された原紙を移送する移送手段と、
    　前記移送された原紙から、前記ブランクシートを取得するブランクシート取得手段（２２ａ、２２ｂ）と、
    　前記取得されたブランクシートを、プレス加工するプレス手段（２２ａ、２２ｂ）とを備え、
    　前記加熱手段は、前記ブランクシート取得手段及び前記プレス手段の作動時間帯の少なくとも一部を含む時間帯において作動する、紙容器の製造装置。     An apparatus (10) for producing a paper container by press molding,
    Heating means (23a, 23b) capable of heating a base paper (57) including a blank sheet (58) having a desired shape;
    Transfer means for transferring the heated base paper,
    Blank sheet acquisition means (22a, 22b) for acquiring the blank sheet from the transferred base paper;
    Press means (22a, 22b) for press working the obtained blank sheet;
    The paper container manufacturing apparatus, wherein the heating unit operates in a time zone including at least a part of an operation time zone of the blank sheet acquisition unit and the press unit.
  3. 　前記加熱手段は、前記ブランクシート取得手段及び前記プレス手段の作動時間内において作動する、請求項２記載の紙容器の製造装置。 The apparatus for manufacturing a paper container according to claim 2, wherein the heating means operates within an operation time of the blank sheet obtaining means and the pressing means.
  4. 　プレス成形による紙容器の製造装置（１０）であって、
    　帯状の原紙（５７）を供給する原紙供給手段（１１）と、
    　前記供給された原紙の対応する位置に、成形時の皺を吸収するための罫線（５５）を形成する罫線形成手段（２１ａ、２１ｂ）と、
    　前記罫線が形成された原紙を移送する第１移送手段と、
    　前記移送された原紙を加熱する加熱手段（２３ａ、２３ｂ）と、
    　前記加熱された原紙を移送する第２移送手段と、
    　前記移送された原紙から、前記形成された罫線の少なくとも一部を含む所望の形状のブランクシート（５８）を打ち抜くブランクシート打抜手段（２２ａ、２２ｂ）と、
    　前記打ち抜かれたブランクシートを、その位置でプレス加工するプレス手段（２２ａ、２２ｂ）とを備え、
    　前記罫線形成手段及び前記加熱手段の各々において処理に必要な時間は、前記ブランクシート打抜手段及び前記プレス手段において処理に必要な時間と同一であると共に、前記第１移送手段と前記第２移送手段とは同期して作動する、紙容器の製造装置。     An apparatus (10) for producing a paper container by press molding,
    Base paper supply means (11) for supplying a band-shaped base paper (57);
    Ruled line forming means (21a, 21b) for forming ruled lines (55) for absorbing wrinkles during molding at positions corresponding to the supplied base paper;
    First transfer means for transferring the base paper on which the ruled lines are formed;
    Heating means (23a, 23b) for heating the transferred base paper;
    Second transfer means for transferring the heated base paper;
    Blank sheet punching means (22a, 22b) for punching a blank sheet (58) having a desired shape including at least a part of the formed ruled line from the transferred base paper;
    Press means (22a, 22b) for press-working the punched blank sheet at that position,
    The time required for processing in each of the ruled line forming means and the heating means is the same as the time required for processing in the blank sheet punching means and the pressing means, and the first transfer means and the second transfer means An apparatus for manufacturing a paper container that operates in synchronization with the means.
  5. 　請求項１から請求項４のいずれかに記載の紙容器の製造装置を用いて紙容器（５０）を製造する、紙容器の製造方法。 A method for manufacturing a paper container, comprising manufacturing the paper container (50) using the apparatus for manufacturing a paper container according to any one of claims 1 to 4.
  6. 　請求項１から請求項４のいずれかに記載の紙容器の製造装置により得られる、紙容器（５０）。 (5) A paper container (50) obtained by the paper container manufacturing apparatus according to any one of (1) to (4).
PCT/JP2018/029896 2018-08-09 2018-08-09 Paper container production device, paper container production method, and paper container WO2020031322A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0364733U (en) * 1989-10-30 1991-06-24
JPH072037U (en) * 1993-06-15 1995-01-13 信越ポリマー株式会社 Mold for press molding
JP2003127217A (en) * 2001-10-22 2003-05-08 Idemitsu Unitech Co Ltd Apparatus and method for manufacturing packaging container, and packaging container obtained by the manufacturing method
JP2014001086A (en) * 2012-06-15 2014-01-09 Hoya Corp Glass gob molding device, method of manufacturing glass gob and method of manufacturing glass optical element
JP2017087738A (en) * 2017-01-18 2017-05-25 東洋アルミエコープロダクツ株式会社 Manufacturing method and manufacturing device of paper container

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0364733U (en) * 1989-10-30 1991-06-24
JPH072037U (en) * 1993-06-15 1995-01-13 信越ポリマー株式会社 Mold for press molding
JP2003127217A (en) * 2001-10-22 2003-05-08 Idemitsu Unitech Co Ltd Apparatus and method for manufacturing packaging container, and packaging container obtained by the manufacturing method
JP2014001086A (en) * 2012-06-15 2014-01-09 Hoya Corp Glass gob molding device, method of manufacturing glass gob and method of manufacturing glass optical element
JP2017087738A (en) * 2017-01-18 2017-05-25 東洋アルミエコープロダクツ株式会社 Manufacturing method and manufacturing device of paper container

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