Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
  • B29C59/007—Forming single grooves or ribs, e.g. tear lines, weak spots
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
  • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
  • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
  • B26D7/08—Means for treating work or cutting member to facilitate cutting
  • B26D7/10—Means for treating work or cutting member to facilitate cutting by heating
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
  • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
  • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
  • B26D7/20—Cutting beds
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
  • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
  • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
  • B26F1/38—Cutting-out; Stamping-out
  • B26F1/40—Cutting-out; Stamping-out using a press, e.g. of the ram type
• • 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
  • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
  • B31F1/08—Creasing
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
  • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
  • B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
  • B29C35/041—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using liquids
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
  • B29C53/02—Bending or folding
  • B29C53/04—Bending or folding of plates or sheets
  • B29C53/06—Forming folding lines by pressing or scoring
  • B29C53/063—Forming folding lines by pressing or scoring combined with folding
• • 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
  • B31B50/25—Surface scoring
  • B31B50/252—Surface scoring using presses or dies

Definitions

• the present invention relates to an apparatus for producing a plastic sheet containing a bent line, which can produce a plastic product in which a plastic sheet such as PET is bent and processed into a container or the like.
• plastic sheet with a bent line cut a long plastic sheet wound into a roll into a plate-shaped sheet, cut out the sheet using a flat plate punch, insert the ascending lines, and after the bending process It consists of each process such as gluing with an adhesive and antistatic treatment. At present, it is possible to insert a wire at the same time as die cutting with a flat board punching machine.
• Plastics such as PET (polyethylene terephthalate), PVC (polychlorinated bier), and PP (polypropylene) are used as the material of the product.
• the above materials are thermoplastic in shape and displacement, and can be deformed by heat.
• the long sheet is heated by passing through a heating roll (heating roller), and then cooled through a straightening process for a while to form a curl-shaped habit. Can be removed to make a straight sheet. After that, if the sheet is cut at equal intervals, a plate-like plastic sheet of a certain size can be made.
• embossing in which an uneven pattern is formed on the plastic surface, a concave depression can be formed by passing a sheet through an embossing roll while heating.
• heating the heating roll a method is used in which heated oil is poured into the inside of the roll (inside the mouth) to heat the roll to a constant temperature.
• Patent Document 1 As an invention of a method of inserting a bent line without heating the beating wire blade, a method of processing a plastic sheet containing a bent line is disclosed in Japanese Patent Application Laid-Open No. 08-2944961, which is hereinafter referred to as Patent Document 1. Described below).
• an aluminum plate having a lower hardness than a ⁇ -wire blade is laid under a plastic sheet, grooves are formed in the plate in advance at positions corresponding to a go-line blade, and the plastic sheet is pressed with a ⁇ -line blade. That is what it is.
• a hot wire forming method for heating an S-wire blade a “wire forming method and a wire forming apparatus” (Japanese Unexamined Patent Application Publication No. H10-024248: Patent Document 2) is described. ).
• a self-heating pressing blade made of an electrothermal material is used, and the plastic sheet is pressed in a state in which the blade is energized to generate heat by energizing the cutting blade, thereby performing the wire insertion. Controlling the temperature during operation is important in the production of plastic sheets with bent beating lines. The temperature of the plastic sheet, especially when inserting plastic wire, has a significant effect on the quality of the assault lines formed.
• the temperature of the plastic sheet is preferably kept at about 30 ° C. to 40 ° C. Therefore, it is not necessary to use a heated X-ray blade as shown in Patent Document 2.
• a heated X-ray blade as shown in Patent Document 2.
• the area of the plastic sheet to be placed on the bending sheet plastic sheet making device is large, so that the entire surface of the plastic sheet to be bent is uniformly 30 ° C to 40 ° C.
• the depth of the wire blade digging into the plastic sheet is very shallow, and the effect of subtle temperature If the temperature differs depending on the location of the plastic sheet, the incidence of defective products will increase.
• the problem to be solved by the present invention is to solve the above-mentioned problems, to make a plastic sheet warm to a uniform temperature, to form a smooth ⁇ line in the sheet, and to make a plastic sheet with a folded ⁇ line.
• the provision of equipment is to make a plastic sheet warm to a uniform temperature, to form a smooth ⁇ line in the sheet, and to make a plastic sheet with a folded ⁇ line.
• the invention according to claim 1 of the present invention is directed to a punching device for producing a folded plastic sheet containing a folded sheet for folding a plastic sheet into a container or the like,
• a plastic sheet forming apparatus with a bent line which is one of the components of a plastic product processing apparatus, is as follows. Make structure. First, in order to heat a plastic sheet, a flat plate for keeping heat is provided in the apparatus. Then, the heat-insulating flat plate is heated so that the heat of the heat-insulating flat plate can be transferred to the sheet when the sheet is conveyed onto the heat-insulating flat plate.
• the bending S-line plastic sheet making machine consists of an upper plate fixed part and a lower plate movable part.
• a die is attached to the upper plate fixed part and a flat plate for heat insulation is attached to the lower plate movable part.
• the upper plate is equipped with a punching die embedded with a punching blade and a wire blade.
• the cutting edge of the S-line blade is slightly shorter than the cutting edge of the punching blade to keep the plastic sheet warm.
• the lower plate uses a movable flat plate for heat insulation, it is necessary to install a flat plate for heat insulation. However, once this is replaced (installed), it can be used for any type (plastic sheet of different thickness or material, product type, etc.). There is no need to prepare or replace the warming plate each time. This is because, in the present invention, by adjusting the temperature of the heat retaining flat plate, it is possible to cope with the difference and the type of the material. Since circulating hot water is used as a method for heating the heat retaining plate, the sheet can be constantly heated even if it is operated continuously. This is due to the use of water, a fluid with a high specific heat.
• a plurality of thin tubes are provided inside the heat-retaining flat plate so as to maintain a state in which the thin tubes are filled with hot water, and in order to constantly circulate the hot water, fine holes are provided on the heat-retaining flat plate, and the hot water is supplied to the fine holes.
• the structure allows hot water to be always introduced through the pipe, so that the hot water can always be kept in a state filled with warm water, and the entire heat insulating flat can be uniformly and stably maintained at a constant temperature.
• the thin tube inside the heat retaining flat is filled with liquid, and has a pressure-resistant heat retaining flat structure that does not deform the heat retaining flat due to the pressing of the punching blade and wire blade.
• FIG. 1 is a product development view of a plastic sheet cut out with a ⁇ line by the apparatus for producing a folded ⁇ -lined plastic sheet of the present invention.
• FIG. 2 is a cross-sectional view of an apparatus (punching machine) for producing a plastic sheet with a bent line according to the present invention.
• FIG. 3 is a cross-sectional view of a plastic sheet when a wire is inserted and a die is cut by the apparatus for forming a plastic sheet with a bent wire according to the present invention (punching machine).
• FIG. 4 is a perspective view of the heat retaining flat plate of the present invention.
• FIG. 5 is a (1) perspective view and (2) a side view of the hot water pipe of the present invention.
• FIG. 6 is a cross-sectional view when the heat retaining flat plate of the present invention is cut from each direction.
• FIG. 7 is a cross-sectional view of the heat-retaining flat board for explaining the state of the flow of hot water flowing through the thin tubes inside the heat-retaining flat board of the present invention.
• Fig. 1 shows a sheet 390 in which the sheet is cut out with an S-line into an exploded view to produce a plastic container.
• the solid line in the figure is the part punched by the punching blade, and the dashed line is the assault line inserted by the ⁇ blade.
• Fig. 2 is a cross-sectional view of a folded ⁇ -lined plastic sheet making machine (punching machine) that simultaneously performs ⁇ -line insertion and die cutting.
• the punching machine is composed of two flat plates consisting of an upper plate 1 and a lower plate 2.
• the upper plate 1 is a fixed part that receives the lower plate, and the lower plate 2 is a movable part that can move up and down.
• the upper panel 1 includes an uneven paper protecting plate 101, an uneven paper 102, a bottom plate 103 (steel plate), and a punching die 110.
• a punching blade 111 and a ⁇ -wire blade 112 are attached to the punching die 110. It is assumed that the angle of the cutting edge of the punching blade 111 is more acute than that of the go-line blade 112.
• the punching blade performs the punching, and the ⁇ line blade presses halfway through the sheet. Therefore, the gap ⁇ a between the tip of the punching blade and the tip of the X-ray blade is adjusted to be slightly smaller than the thickness of the sheet. That is,
• a a m b— a (A b> a ⁇ m b / 2) Adjust the X-ray blade so that When the die 110 is prepared for each product and a different product is to be die-cut, the device (punching machine) can be used as it is simply by replacing the die 110.
• the heat-retaining flat plate 210 is fixed to the lower plate 2 of the punching machine main body (the flat plate punching device movable section main body). Inside the flat plate for heat insulation, a flow path consisting of a thin tube is provided, and the structure is such that hot water whose temperature is adjusted outside is circulated, and the conveyed sheet is heated to a uniform temperature.
• the flat plate for heat insulation has sufficient strength against press because the inner cavity is a thin tube.
• FIG. 3 is a cross-sectional view of the sheet when the sheet is pressed by the punching machine of the present invention (1) and the state after that (2).
• (1) in Fig. 3 shows the state when the sheet is pressed. Due to the difference in height between the S-line blade 112 and the punching blade 111, the sheet is cut out by the punching blade, and the dent is formed by the S-line blade. Made.
• (2) shows the state after the pressing of the ⁇ -line blade is removed.
• the sheet has a cut edge 310 cut out by a punching blade and a tongue 320 formed by a knives blade. At this time, if the entire sheet is not uniformly heated, the entire sheet cannot be uniform assault.
• FIG. 4 is a perspective view of the heat retaining flat plate 210.
• Hot water pipes 221 (entrance side) and 222 (outlet side) are attached to the side of the heat retaining flat plate to circulate hot water.
• the interior of the flat plate for heat insulation is a hollow structure with thin tubes 211 connected in a grid pattern. Here is filled with hot water and circulates. Further, pores 212 for supplying warm water are provided inside the flat plate 210 for keeping heat.
• the hot water pipes 221 (inlet side) and 222 (outlet) are provided on the side of the heat-retaining flat plate. Side) is attached.
• FIG. 5 is a (1) perspective view and (2) a side view of the hot water pipe (221 or 222).
• FIG. 6 is a cross-sectional view of the heat insulating flat 210 cut along each line (dashed line) in FIG.
• Section a is a cross-sectional view of the heat-retaining flat plate 210 cut horizontally along the line a.
• the inside is a cavity with a structure in which thin tubes 211 are connected in a grid pattern. It is filled with hot water and circulates here.
• Section b is a sectional view taken along line b
• section c is a sectional view taken along line c. Hot water circulates through the pores 212.
• the heat retaining flat plate is heated by the hot water, the heat capacity of the hot water may be large, and the surface temperature of the entire plastic sheet can be kept uniform even during the continuous punching process. Therefore, a smooth assault line can be formed.
• the thin tube inside the flat plate for heat insulation is filled with liquid, so the flat plate for heat insulation will not be deformed by the pressing of the punching blade and wire blade! ing.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Forests & Forestry (AREA)
• Physics & Mathematics (AREA)
• Optics & Photonics (AREA)
• Shaping Of Tube Ends By Bending Or Straightening (AREA)
• Making Paper Articles (AREA)
• Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=34975419

Family Applications (1)

Country Status (4)

Cited By (1)

Families Citing this family (14)

Citations (6)

• 2004
  • 2004-03-12 JP JP2004069887A patent/JP2005254634A/ja active Pending
  • 2004-03-30 US US10/592,541 patent/US20070203005A1/en not_active Abandoned
  • 2004-03-30 WO PCT/JP2004/004532 patent/WO2005087479A1/ja not_active Ceased
  • 2004-03-30 EP EP04724385A patent/EP1743757A1/en not_active Withdrawn

Patent Citations (6)

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