CN104245285A - Production method and production device for hollow structure plate - Google Patents

Production method and production device for hollow structure plate Download PDF

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Publication number
CN104245285A
CN104245285A CN201380017617.8A CN201380017617A CN104245285A CN 104245285 A CN104245285 A CN 104245285A CN 201380017617 A CN201380017617 A CN 201380017617A CN 104245285 A CN104245285 A CN 104245285A
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CN
China
Prior art keywords
hollow
structure plate
hollow structure
matrix band
protuberance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201380017617.8A
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Chinese (zh)
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CN104245285B (en
Inventor
伊藤宪治
平子慎二
望月骏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ube Exsymo Co Ltd
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Ube Exsymo Co Ltd
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Publication of CN104245285A publication Critical patent/CN104245285A/en
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Publication of CN104245285B publication Critical patent/CN104245285B/en
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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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
    • B29C65/103—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined direct heating both surfaces to be joined
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/438—Joining sheets for making hollow-walled, channelled structures or multi-tubular articles
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/725—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being hollow-walled or honeycombs
    • B29C66/7252—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being hollow-walled or honeycombs hollow-walled
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81433—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D99/00—Subject matter not provided for in other groups of this subclass
    • B29D99/001—Producing wall or panel-like structures, e.g. for hulls, fuselages, or buildings
    • B29D99/0021—Producing wall or panel-like structures, e.g. for hulls, fuselages, or buildings provided with plain or filled structures, e.g. cores, placed between two or more plates or sheets, e.g. in a matrix
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/001—Shaping in several steps
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/004—Shaping under special conditions
    • B29C2791/007—Using fluid under pressure
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/18—Thermoforming apparatus
    • B29C51/20—Thermoforming apparatus having movable moulds or mould parts
    • B29C51/22—Thermoforming apparatus having movable moulds or mould parts rotatable about an axis
    • B29C51/225—Thermoforming apparatus having movable moulds or mould parts rotatable about an axis mounted on a vacuum drum
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/266—Auxiliary operations after the thermoforming operation
    • B29C51/267—Two sheets being thermoformed in separate mould parts and joined together while still in the mould
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/001—Flat articles, e.g. films or sheets having irregular or rough surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/002—Panels; Plates; Sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2022/00—Hollow articles
    • B29L2022/005—Hollow articles having dividing walls, e.g. additional elements placed between object parts
    • B29L2022/007—Hollow articles having dividing walls, e.g. additional elements placed between object parts integrally moulded or formed

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

Provided are a production method and a production device for hollow structure plates exhibiting excellent producibility and unlikely to cause defects when thermally fusing hollow projecting parts. Molded sheets are obtained by forming frustum-shaped, hollow projecting parts in a zigzag pattern on one surface of a thermoplastic-resin sheet via vacuum forming. Next, two sheets are integrated with one another by aligning and thermally fusing the hollow projecting parts thereof after heating the two molded sheets. During this integration step, for example, at positions aligning with each of the hollow projecting parts formed on the molded sheets, the tip sections of the hollow projecting parts on the molded sheets are selectively hot-air heated using a hot-air generator (22) equipped with a nozzle (22a) in which a plurality of hot-air discharge ports (22b) are formed.

Description

The manufacture method of hollow structure plate and manufacturing installation
Technical field
The present invention relates to a kind of manufacture method and manufacturing installation of hollow structure plate of thermoplastic resin.In more detail, a kind of multiple hollow protuberances being provided projectingly on two thermoplastic resin sheets are related to the manufacturing technology of the hollow structure plate of the structure of the state thermal welding of docking.
Background technology
Due to resinous hollow structure plate light weight, and resistance to chemical reagents, resistance to water, thermal insulation, sound-proofing and restorative excellence, process is also easier to, and is therefore used to building occupancy and the mobile applications etc. such as sheet material widely in field of the logistics purposes of box lumber, bale packing materials etc., wall, ceiling.The multiple hollow protuberances being particularly provided projectingly on two thermoplastic resin sheets with the hollow structure plate of so-called bipyramid (Star イ Application コ ー Application: the Japan registration trade mark) type of the structure of the state thermal welding of docking due to bending property and compression performance excellent, and the textural lower symmetry of thickness direction, therefore seldom curling, be therefore used in the various fields such as automotive interior material, logistics goods, materials and equipments and building materials.
In general, the hollow structure plate of bipyramid (Star イ Application コ ー Application: Japan registration trade mark) type becomes the structure (for example, referring to patent document 1,2) being laminated with the plane materiel be made up of thermoplastic resin etc. at the multiple hollow protuberances being provided projectingly on two thermoplastic resin sheets with two surfaces of the intermediate of the state thermal welding of docking.When manufacturing the hollow structure plate of this bipyramid (Star イ ン コ ー Application: Japan registration trade mark) type, described in patent document 1,2, in pressure-reducing chamber, import two thermoplastic resin sheets of semi-molten state.
Then, in pressure-reducing chamber, utilizing projectingly has the pair of rolls of multiple pin on each resin sheet, form multiple hollow protuberance, and carries out thermal welding each other to this hollow protuberance and form intermediate.Now, in order to reliably carry out the thermal welding each other of hollow protuberance, contactless heater is used in the manufacture method described in patent document 1, in the manufacture method described in patent document 2, use the heater of contact in addition, before by thermal welding, resin sheet is heated.Then, on two surfaces of the intermediate obtained, utilize the stacked plane materiel of the methods such as thermal welding, thus obtain hollow structure plate.
prior art document
patent document
Patent document 1: No. 2003/080326th, International Publication
Patent document 2: Japanese Unexamined Patent Publication 2007-83407 publication
Summary of the invention
the problem that invention will solve
But, in the manufacture method of above-mentioned hollow structure plate in the past, there is temperature conditions, forming speed be restricted, be difficult to such problem points that boosts productivity.Such as, in manufacture method in the past, if improve forming speed, then heating when carrying out thermal welding each other to hollow protuberance becomes insufficient, and it is bad to produce welding.And, bad in order to eliminate thermal welding, if improve heating-up temperature, then hollow convex part deformation, produce shape defect.Its result, cannot obtain homogeneous and have the hollow structure plate of sufficient adhesive strength.
Therefore, main purpose of the present invention is to provide a kind of be difficult to when carrying out thermal welding to hollow protuberance to produce bad and the manufacture method of the hollow structure plate of productivity ratio excellence and manufacturing installation.
for the scheme of dealing with problems
The present inventor has attentively carried out experimental study to solve the problem, and result obtains opinion shown below.When improving the productivity ratio of hollow structure body, replacement is extruded the thermoplastic resin sheet of molten condition and uses the way of the thermoplastic resin sheet of sheet material to be effective.And, by carrying out formation and the thermal welding of hollow protuberance in different operations, can improve manufacture hollow structure plate time productivity ratio and operability both.
But, when applying these methods, needing to heat heat-fused portion with larger heat, being therefore easy to produce the bad and shape defect of the welding of above-mentioned hollow protuberance.Particularly when using the heater of the contact described in patent document 2, if heating-up temperature raises, then heating plate is out of shape because of thermal expansion, is difficult to contact all hollow protuberances equably, and the heat therefore putting on each hollow protuberance is easy to produce deviation.
Therefore, the present inventor finds, by while utilize roller to cool thermoplastic resin sheet, optionally only the top ends of hollow protuberance is heated while heated by noncontact with large heat, the distortion of hollow protuberance can be prevented, and reliably can carry out thermal welding each other to hollow protuberance, obtain the present invention.
The manufacture method of hollow structure plate of the present invention comprises following operation: in the face of the side of thermoplastic resin sheet, the hollow protuberance of frusto-conical be formed as staggered by vacuum forming and obtain the operation of matrix band; And after heating two matrix bands, make the hollow protuberance of these two matrix bands dock also thermal welding each other and carry out integrated operation; In the operation of this integration, optionally Hot-blast Heating is carried out to the top ends of the hollow protuberance of described matrix band.
In the manufacture method of this hollow structure plate, also can be, in the operation of described integration, use multiple pin to be formed as staggered and there is cooling or one group of roller of temp regulating function, the pin of this roller is inserted into the hollow protuberance of each matrix band, while cool described matrix band, press the apex portion of each hollow protuberance from inner side at least partially.In this case, only can heat the top ends of the hollow protuberance of described matrix band, and other parts of described matrix band are cooled.
In addition, also can be, in the operation of described integration, heat with the width both ends of the heat of the width central part higher than described matrix band to described matrix band.
And, also can be, according to the temperature of the intermediate that the operation by described integration obtains, regulate the heating-up temperature of described matrix band.
The manufacturing installation of hollow structure plate of the present invention to be included in pressure-reducing chamber to be rotatably configured with forming rolls and in the face of the side of thermoplastic resin sheet, the hollow protuberance of frusto-conical to be formed as staggered vacuum forming portion and to make hollow protuberance dock each other after heating two matrix bands utilizing described vacuum forming portion to be shaped and thermal welding and carry out the heat-fused portion of integration, is provided with the hot wind generating device for optionally carrying out Hot-blast Heating to the top ends of the hollow protuberance of described matrix band in described heat-fused portion.
In the manufacturing installation of this hollow structure plate, also can be provided with hot air blow port in the position of aliging with each hollow protuberance being formed at described matrix band of described hot wind generating device.In this case, described hot air blow port can be set to slit-shaped.
In addition, also can be that described hot wind generating device can split control heating-up temperature on the width of described matrix band.At this, " can split control " refers to and can change separately, control heating-up temperature etc. according to the position of width.
And can arrange in the manufacturing installation of this hollow structure plate: temperature meter, it makes the integration of two matrix bands and the temperature of intermediate that obtains for measuring; And heating-up temperature adjusting portion, it is for regulating the heating-up temperature of described matrix band according to the temperature of described intermediate.
the effect of invention
According to the present invention, owing to optionally carrying out Hot-blast Heating to the top ends of the hollow protuberance of matrix band, even if therefore improve forming speed, be also difficult to generation when carrying out thermal welding to hollow protuberance bad, compared with the past, can boost productivity.
Accompanying drawing explanation
Fig. 1 is the flow chart of the manufacture method of the hollow structure plate representing the 1st embodiment of the present invention.
Fig. 2 is the schematic diagram of the manufacturing installation used in the manufacture method of the hollow structure plate of the 1st embodiment of the present invention.
Fig. 3 is the sectional view of the structure schematically showing the hollow structure plate adopting the method shown in Fig. 1 to manufacture.
Fig. 4 is the stereogram of the form representing the matrix band 2 shown in Fig. 3.
(a) of Fig. 5 is the stereogram of the structure being schematically illustrated in the hot wind generating device 22 used in the Hot-blast Heating operation shown in Fig. 2, the side view of state when (b) of Fig. 5 is the use representing hot wind generating device 22.
Fig. 6 is the stereogram of the structure represented when carrying out FEEDBACK CONTROL according to the surface temperature of intermediate 3 to the heating condition of hot wind generating device 22.
Fig. 7 is the schematic diagram of the manufacturing installation used in the manufacture method of the hollow structure plate of the 2nd embodiment of the present invention.
Detailed description of the invention
Below, with reference to the accompanying drawing added, describe in detail for implementing mode of the present invention.In addition, the present invention is not limited to the embodiment of following explanation.
(the 1st embodiment)
First, the manufacture method of the hollow structure plate of the 1st embodiment of the present invention is described.Fig. 1 is the flow chart of the manufacture method of the hollow structure plate representing embodiments of the present invention, and Fig. 2 is the schematic diagram of the manufacturing installation now used.In addition, Fig. 3 is the sectional view of the structure schematically showing the hollow structure plate adopting the manufacture method of present embodiment to manufacture, and Fig. 4 is the stereogram of a form of the matrix band 2 represented wherein.
In the manufacture method of the hollow structure plate of present embodiment, at least carry out in the face of the side of thermoplastic resin sheet, the hollow protuberance of frusto-conical being formed as staggered by vacuum forming and obtain the operation of matrix band and after heating two matrix bands, make this hollow protuberance dock also thermal welding each other and carry out integrated operation.And, in the operation of integration, optionally Hot-blast Heating is carried out to the top ends of hollow protuberance.
Specifically, as shown in Figure 1, sheet forming process (step S1), Hot-blast Heating operation (step S2) and thermal welding process (step S3) is carried out successively.Then, as required, plane materiel lamination process (step S4) is carried out after step s 3.
[overall structure of hollow structure plate 1]
As shown in Figure 3, the hollow structure plate 1 adopting the manufacture method of present embodiment to obtain is that the hollow protuberance 2a that makes the hollow protuberance 2a of the frusto-conical shown in Fig. 4 be formed as staggered two matrix bands 2 docks and thermal welding each other.In addition, in this hollow structure plate 1, on two surfaces of the intermediate 3 be made up of two matrix bands 2, be laminated with plane materiel 4 etc. as required.
At this, as long as form the material thermoplastic resin of matrix band 2 of intermediate 3, just without particular limitation of, such as, polyethylene (PE), polypropylene (PP) and Merlon (PC) etc. can be used.In these thermoplastic resins, consider based on cost, formability and physical characteristic aspect, the particularly preferably olefin-based resin of low density polyethylene (LDPE), high density polyethylene (HDPE), straight-chain low density polyethylene (LDPE), homogeneous polypropylene, random polypropylene and block-wise polypropylene (Japanese: Block ロ ッ Network shape Port リ プ ロ ピ レ Application) etc.
In addition, in the thermoplastic resin of forming shaped sheet 2, also can be added with the chopped strands such as the fillers such as talcum, mica and calcium carbonate, glass fibre, aramid fiber and carbon fiber.Thereby, it is possible to improve the rigidity of intermediate 3.And, in the thermoplastic resin of forming shaped sheet 2, also can add the modifier for improving flame retardancy, electric conductivity and weatherability etc.In addition, two matrix bands 2 forming intermediate 3 are formed by identical material usually, but carrying out in the scope of thermal welding, also can be formed by mutually different materials.
[structure of hollow protuberance 2a]
In the hollow structure plate 1 of present embodiment, preferably, the imaginary horizontal plane from opening portion of matrix band 2 and hollow protuberance 2a angulation (angle of inclination) θ are 45 ° ~ 80 °.When tilt angle theta is less than 45 °, and the total bond area between plane materiel 4 diminishes, and therefore when applying load to the hollow structure plate 1 obtained, adhesive portion is easy to peel off, and causes intensity to reduce.On the other hand, if tilt angle theta is more than 80 °, then when vacuum forming, the thickness of matrix band 2 became thin and hollow protuberance 2a side filming, sometimes cannot obtain sufficient intensity.
In addition, it is further preferred that tilt angle theta is 50 ° ~ 75 °, thereby, it is possible to improve the rigidity of intermediate 3, and intensity when obtaining hollow structure plate 1 can be improved.In addition, the tilt angle theta of hollow protuberance 2a also can be non-constant, and hollow protuberance 2a also can be relative to the asymmetrical shape of central axis.
On the other hand, preferably, the diameter of the top ends of hollow protuberance a is set as 2mm ~ 4mm, thereby, it is possible to be more than the value of regulation by the quantity set of hollow protuberance 2a, therefore, it is possible to improve the compressive strength on thickness direction.In addition, preferably, the interval of hollow protuberance 2a is set as 1mm ~ 5mm.When the interval of hollow protuberance 2a is less than 1mm, plastic property reduces sometimes, if in addition more than 5mm, then the quantity of the hollow protuberance 2a of per unit area reduces, and sometimes cannot obtain sufficient compressive strength in a thickness direction.
And preferably, the height of the hollow protuberance 2a on matrix band 2 is more than 3mm.When the height of hollow protuberance 2a is less than 3mm, in the various uses of hollow structure plate 1, the serviceability based on this hollow structure reduces, and the difficulty on manufacturing also reduces.In addition, if the height of hollow protuberance 2a is more than 15mm, then become deformation difficult, if therefore consider the formability in manufacturing process, then preferably the height of hollow protuberance 2a is below 15mm.
[weight per unit area]
The weight per unit area of the hollow structure plate 1 of present embodiment is not particularly limited, but is preferably set to 500g/m 2~ 3500g/m 2.This is because, when the weight per unit area of hollow structure plate 1 is less than 500g/m 2time, the thickness of matrix band 2 became thin and hollow protuberance 2a side filming, and intensity, rigidity reduce, in addition, if weight per unit area is more than 3500g/m sometimes 2, then quality increases, and according to the difference of purposes, light weight is impaired sometimes.
[step S1: sheet forming process]
In sheet forming process, in the face of the side of thermoplastic resin sheet, the hollow protuberance 2a of frusto-conical is formed as staggered by vacuum forming, thus makes matrix band 2.This sheet forming process can utilize suction former (vacuum forming portion 10) to implement, this suction former such as shown in Figure 2, one group of forming rolls 12 is configured in pressure-reducing chamber 11 in the mode that its rotating shaft is parallel to each other, and this group of forming rolls 12 is the projecting pin 12a having multiple truncated cone shape or frustum of a pyramid shape on surface.
On each forming rolls 12 of this suction former (vacuum forming portion 10), be effectively configured as the shape of expectation and the suction hole be provided with for attracting holding thermoplastic resin sheet 5 without spot at short notice along pin 12a to make thermoplastic resin sheet 5.
In addition, preferably, in suction former (vacuum forming portion 10), be provided with the cooling body for forcibly cooling the matrix band 2 being formed with hollow protuberance 2a.Like this, by forcibly cooling the matrix band after vacuum forming, the thermoplastic resin sheet 5 of vacuum forming molten condition can be shortened and be cured as time needed for state of matrix band 2, can speed of production be improved.In addition, as the cooling body being arranged at suction former (vacuum forming portion 10), such as, there is the oily circulating cooling of forming rolls 12, for the air cooling equipment of matrix band 2, the arranging of small mist generation device.
At this, the temperature of forming rolls 12 is not particularly limited, and suitably can set, but be preferably 10 DEG C ~ 40 DEG C according to the kind etc. of the resin forming thermoplastic resin sheet 5.Thereby, it is possible to make the solid state of matrix band 2 better.
When using this device to make matrix band 2, first, from mould 13, extrude the thermoplastic resin sheet 5 of molten condition.Or, replace and extrude the thermoplastic resin sheet 5 of above-mentioned molten condition, also can heat the thermoplastic resin sheet of sheet material, and make it as molten condition and sending.Then, above-mentioned thermoplastic resin sheet 5 is attracted to maintain in forming rolls 12, is formed with the protuberance 2a of the hollow truncated cone shape of the shape corresponding with pin 12a, becomes matrix band 2.
Now, the thickness of thermoplastic resin sheet 5 is not particularly limited, but is preferably 0.2mm ~ 2.0mm.When the thickness of thermoplastic resin sheet 5 is less than 0.2mm, the physical characteristic of sometimes obtained matrix band 2 is insufficient.In addition, if the thickness of thermoplastic resin sheet 5 is thicker than 2.0mm, then be sometimes difficult to form hollow protuberance 2a by vacuum forming.
[step S2: Hot-blast Heating operation]
In Hot-blast Heating operation, utilize hot wind generating device 22 optionally by the top ends Hot-blast Heating of the hollow protuberance 2a of matrix band 2 that formed by step S1 to can the temperature of thermal welding.Like this, by optionally only heating the top ends relevant to thermal welding, the distortion of hollow protuberance 2a can be prevented, and reliably can carry out thermal welding each other to hollow protuberance 2a.
At this, if use the heater of the way of contact when carrying out thermal welding to hollow protuberance 2a, then having a little time in vain from being heated to during heat is melted, be subject to the impact of surrounding environment during this period, the temperature of the top ends of hollow protuberance 2a reduces sometimes.On the other hand, in the manufacture method of the hollow structure plate of present embodiment, owing to utilizing hot wind generating device 22 to carry out Hot-blast Heating, therefore, it is possible to until thermal welding is all heated, the temperature of the top ends of hollow protuberance 2a can not reduce.Its result, the manufacture method of the hollow structure plate of present embodiment need not apply the heat of more than institute's calorific requirement to hollow protuberance 2a, can effectively heat.
(a) of Fig. 5 is the stereogram of the structure schematically showing the hot wind generating device 22 used in the Hot-blast Heating operation shown in Fig. 2, the side view of state when (b) of Fig. 5 is the use representing hot wind generating device 22.As long as the hot wind generating device 22 used in the hollow structure plate of present embodiment optionally can carry out the hot wind generating device of Hot-blast Heating to the top ends of the hollow protuberance 2a of matrix band 2, such as, as shown in (a) of Fig. 5, the hot wind generating device with the nozzle 22a being provided with multiple hot air blow port 22b can be used.
As shown in (b) of Fig. 5, desirably, the nozzle 22a of hot wind generating device 22 is when being configured at the front of one group of roller 21 of heat-fused portion 20, and the face relative with roller 21 is formed as the curved surface with the radius of curvature equal or approximate with roller 21, is provided with hot air blow port 22b at this curved surface.
In addition, the shape of hot air blow port 22b is not particularly limited, such as, can be set to slit-shaped.In this case, as long as to make the spacing of slit equal with the spacing of the pin 21a of roller 21 and make the Centered mode of the center of pin 21a and slit form each hot air blow port 22b and be formed as the upper lower surface camber on the top of nozzle 22a in the mode corresponding with one group of roller 21.Thereby, it is possible to selective and effectively carry out Hot-blast Heating to the top ends of the hollow protuberance 2a of matrix band 2.
In addition, the aperture area of the width of hot air blow port 22b is not particularly limited, but when the output of hot wind generating device 22 is identical, when aperture area is less, can heat with the top ends of higher heat to hollow protuberance 2a, and, also less on the impact of other parts.
On the other hand, the heater of cordless is indirectly heating means, the heating-up temperature of the essence at the both ends on the width of the therefore following tendency of existence: the heating condition of the essence of matrix band 2 is easy to the impact being subject to surrounding environment, particularly matrix band 2 reduces.As the method solving this problem, considering in advance must be higher by the thermal settings of the top ends putting on hollow protuberance 2a, in this case, sometimes can produce softening, the melting deformation of hollow protuberance 2a at width central part, the intensity local of manufactured hollow structure plate reduces.
Therefore, in the manufacture method of the hollow structure plate of present embodiment, as required, can heat with the width both ends of heat to matrix band 2 higher than width central part.Thereby, it is possible to more uniformly heat the top ends of hollow protuberance 2a, therefore, it is possible to manufacture high strength efficiently and the hollow structure plate of high-quality.
When utilizing hot wind generating device 22 to implement the heating of such thermograde, such as, make the width of nozzle 22a identical with the width of matrix band 2 or less times greater than the width of matrix band 2, be divided into multiple region in its width direction.And, as long as prepare multiple hot wind generating device main body and be linked to independently hot wind generating device main body for one or more regions.Each hot wind generating device main body can carry out action with different conditions respectively, therefore thereby, it is possible to sets heating condition for one or more regions and control.That is, control heating-up temperature can be split on the width of matrix band 2.In addition, the heating condition regulated when Hot-blast Heating also can be any one in the temperature of hot blast and the air quantity of hot blast.
In addition, the heat (Q of the width end of matrix band 2 1) with the heat (Q of central portion 2) ratio (Q 1/ Q 2) be not particularly limited, suitably can set according to surrounding environment, but if consider the balance between the bonding force between the form trait of matrix band 2 and hollow protuberance 2a, then preferably be set to 1.0 < (Q 1/ Q 2)≤1.2.By by heat ratio (Q 1/ Q 2) be arranged on this scope, the difference of the heating-up temperature on the width of matrix band 2 can be suppressed to be 0 DEG C ~ 50 DEG C, preferably suppress in the scope of 0 DEG C ~ 30 DEG C.In addition, the temperature of matrix band 2 is referred in this said heating-up temperature.
On the other hand, it is desirable that, the heat putting on matrix band 2 periodically diminishes towards central portion at both ends in the width direction.Thereby, it is possible to make the even intensity of manufactured hollow structure plate.
In addition, in the manufacture method of present embodiment, the heating-up temperature etc. of the matrix band 2 in Hot-blast Heating operation can be regulated according to the state of the matrix band 2 before the intermediate 3 obtained by thermal welding process described later, thermal welding.Fig. 6 is the stereogram of the structure represented when carrying out FEEDBACK CONTROL according to the surface temperature of intermediate 3 to the heating condition of hot wind generating device 22.In addition, in figure 6, for ease of observing accompanying drawing, for each hollow protuberance being formed at matrix band 2, eliminate diagram, but each matrix band 2 be respect to one another towards being configured with hollow protuberance, and be imported into.
The control method utilizing hot wind generating device 22 to carry out the condition heated is not particularly limited, but such as, as shown in Figure 6, there is following method: use contact or contactless temperature meter 41 to measure the temperature of the intermediate 3 formed by thermal welding process described later, utilize heating-up temperature adjusting portion 42 to regulate the heating condition of hot wind generating device 22 according to this value.Specifically, utilize temperature meter 41 to measure the surface temperature of intermediate 3, according to the deviation of the surface temperature on width, utilize heating-up temperature adjusting portion 42 to regulate heating condition on the width of hot wind generating device 22.
In addition, also can apply intermediate 3 that extraction formed and regulate the method for the heating condition of hot wind generating device 22 according to the deviation of the adhesive strength on width, measure heating before matrix band 2 surface temperature and regulate the method for the heating condition of hot wind generating device 22 according to the deviation of the surface temperature on width.
[step S3: thermal welding process]
In thermal welding process, carry out thermal welding by by two matrix bands 2 after the heating of said temperature gradient-heated operation in the mode making its hollow protuberance 2a and dock each other, and integrated.This thermal welding process can utilize heat-fused portion 20 to implement, this heat-fused portion 20 such as shown in Figure 2, the mode be parallel to each other with rotating shaft be configured with roller footpath equal with the roller footpath of the roller 12 in vacuum forming portion 10 and on surface the projecting one group of roller 21 having multiple pin 21a.
In this case, by the pin 21a of each roller 21 is inserted in the hollow protuberance 2a of matrix band 2 respectively, utilize pin 21a to press the apex portion of each hollow protuberance 2a from inner side at least partially, thus thermal welding is carried out to the hollow protuberance 2a of two matrix bands 2, and integrated.Thereby, it is possible to obtain the intermediate 3 be made up of two matrix bands 2.
As long as the pin 21a of roller 21 can be inserted into the shape in hollow protuberance 2a as used herein, just without the need to being the shape identical with the roller 12 in vacuum forming portion 10, being not limited to truncated cone shape, frustum of a pyramid shape, also can be bar-shaped, column etc.And the viewpoint for the easy embeddability etc. of the pin 21a to above-mentioned roller 21 is considered, it is desirable that, the rotating speed of the roller 21 of heat-fused portion 20 is identical with the rotating speed of the roller 12 in vacuum forming portion 10, or a little faster than the rotating speed of the roller 12 in vacuum forming portion 10.
In addition, it is desirable that, roller 21 has cooling or temp regulating function.If use this roller 21, then when thermal welding, only can heat the top ends of hollow protuberance 2a, and other parts are cooled.Thereby, it is possible to the excellent and hollow structure plate that is high strength than ever of the shape stability manufacturing hollow protuberance 2a.
In addition, in heat-fused portion 20, except roller 21, the pressure roller 23 etc. that the hot wind generating device 22 for heating matrix band 2 can also be set, assist the chimeric between the hollow protuberance 2a of matrix band 2 and the pin 21a of roller 21.This heat-fused portion 20 also can be arranged in pressure-reducing chamber, but also can be set to open system.Like this, thermal welding process can be implemented in an atmosphere, thus can simplified apparatus, therefore operability improves.
In addition, in the manufacture method of the hollow structure plate of present embodiment, also can preheat each matrix band 2 before thermal welding is carried out to hollow protuberance 2a.The pre-heating temperature of this matrix band 2 is different because forming the thermal characteristics of the resin of matrix band 2, therefore cannot limit without exception, but such as desirably temperature between the melting point being set to the temperature of roller 21 and the resin of formation matrix band 2.In addition, pre-warmed method is not particularly limited, and include, for example the method etc. arranging heating tank 30 in the front of heat-fused portion 20.Thus, the temperature distribution homogenization on the width of matrix band 2, and matrix band 2 softens a little and is easy to the pin 21a being embedded in roller 21.
[step S4: plane materiel lamination process]
In plane materiel lamination process, at two surperficial stacked plane materiels 4 of the intermediate 3 made by above-mentioned thermal welding process.As plane materiel 4 as used herein, ground identical with above-mentioned matrix band 2 can use thermoplastic resin sheet.As long as its material thermoplastic resin, just without particular limitation of, such as can use polyethylene (PE), polypropylene (PP) and Merlon (PC) etc.In addition, the thickness of plane materiel 4 is not particularly limited, and suitably can set according to the thickness of the thickness of intermediate 3 and hollow structure plate 1.
The device that the interval that this plane materiel lamination process such as can utilize the mode be parallel to each other with its rotating shaft to separate regulation is configured with pair of rolls is implemented.When using the stacked plane materiel 4 of this device, first, from mould, extrude the plane materiel 4 of molten condition, or the plane materiel 4 of sheet material is set to molten condition and sends.Above-mentioned plane materiel 4 utilizes the roller of lamination to carry out heating pressurization respectively, and is heat fused in two surfaces of the intermediate 3 after utilizing preheating device to heat in advance, afterwards, utilizes air cooling, chill roll and cooling device etc. cool entirety and obtain hollow structure plate 1.
In addition, the hollow structure plate 1 of present embodiment can laminating thermoplastic's resin sheet, other materials further on plane materiel 4.As this stacking material, except thermoplastic resin sheet, such as, also can enumerate thermosetting resin sheet, foamed sheet, paper, weave cotton cloth, non-woven fabrics, metallic plate, metal mesh body, metal oxide plate etc.In addition, laminating method is not particularly limited, such as, can apply thermal welding, ultrasonic fusing, the known method such as bonding, lamination by means of bonding agent.
As set forth in more detail above, in the manufacture method of the hollow structure plate of present embodiment, Hot-blast Heating operation is set between sheet forming process and thermal welding process, in this Hot-blast Heating operation, optionally Hot-blast Heating is carried out to the top ends of the hollow protuberance of matrix band, therefore less to the heat affecting of the part except the part of thermal welding, the efficiency of heating surface is also higher.Therefore, even if the manufacture method of the hollow structure plate of present embodiment improves forming speed, be also difficult to produce the bad and shape defect of the welding of hollow protuberance 2a, compared with the past, can boost productivity.
In addition, in fig. 2, show the example carrying out sheet forming process and thermal welding process on same production line continuously, but the present invention is not limited thereto, also can carries out these operations on different production lines.Specifically, also can be, after having carried out temporarily batching the operation such as matrix band 2 grade obtained by the sheet forming process of step S1, carry out so that the mode of the disengaging production line of the thermal welding process of the Hot-blast Heating operation of other implementation step S2 and step S3 etc. is discontinuous.
(the 2nd embodiment)
Then, the manufacture method of the hollow structure plate of the 2nd embodiment of the present invention is described.Fig. 7 is the schematic diagram of the manufacturing installation used in the manufacture method of the hollow structure plate of present embodiment.In addition, in the figure 7, identical Reference numeral is marked to the inscape identical with the inscape of the manufacturing installation shown in Fig. 2, and description is omitted.In above-mentioned 1st embodiment, the vacuum forming portion 10 shown in Fig. 2 that the employs device that arrange independent of heat-fused portion 20, but the present invention is not limited thereto.
Therefore, in the manufacture method of the hollow structure plate of present embodiment, use the manufacturing installation shown in Fig. 7, carry out sheet forming process (step S1), Hot-blast Heating operation (step S2) and thermal welding process (step S3) continuously.Manufacturing installation shown in Fig. 7 is configured with the projecting one group of roller 12 having the pin of multiple truncated cone shape or frustum of a pyramid shape on surface in pressure-reducing chamber 11, utilizes this roller 12 to carry out shaping and protuberance 2a both thermal weldings each other of protuberance 2a.That is, used in the present embodiment manufacturing installation is provided with vacuum forming portion 10 and the heat-fused portion 20 of the manufacturing installation shown in Fig. 2 in same room 11.
In this case, in Hot-blast Heating operation (step S2), hot wind generating device 22 grade is also such as used optionally to carry out Hot-blast Heating to the top ends of the hollow protuberance 2a of matrix band 2.
The manufacture method of the hollow structure plate of present embodiment is owing to optionally carrying out Hot-blast Heating to the top ends of hollow protuberance 2a, and be therefore difficult to produce the bad and shape defect of the welding of hollow protuberance 2a, productivity ratio is excellent.In addition, the structure than that described above in present embodiment is identical with above-mentioned 1st embodiment with effect.
embodiment
Below, enumerate examples and comparative examples of the present invention, illustrate effect of the present invention.In the present embodiment, use the device shown in Fig. 2, the hollow structure plate of the structure shown in shop drawings 3 under condition shown below, and its productivity ratio is evaluated.
< embodiment 1 >
Weight per unit area is made to be 400g/m 2two matrix bands 2 by being arranged on than heat-fused portion 20 heating tank 30 of 120 DEG C by front, and to preheat.Afterwards, insert in this hollow protuberance 2a and to be rotatably configured in heat-fused portion 20 and by making oil circulation make temperature remain on the pin 21a of one group of forming rolls 21 (latch structure: height 6mm, minimum diameter (top ends) 2mm, maximum gauge (bottom) 6mm, about 72 °, angle of inclination) of 40 DEG C.
Then, the drying machine formula hot wind generating device 22 shown in (a) of Fig. 5 is used optionally to heat the apex portion of the hollow protuberance 2a of matrix band 2, while utilize forming rolls 21 to make hollow protuberance 2a thermally welding.Now, the design temperature of drying machine formula hot wind generating device 22 is set to 270 DEG C in the whole region of the width of matrix band 2.Its result, the thermal welding that can be manufactured on whole hollow protuberance 2a is long-term and stably in good condition and have the intermediate 3 of sufficient adhesive strength.
< embodiment 2 >
Except the design temperature of drying machine formula hot wind generating device 22 is set to 260 DEG C at the width central portion of matrix band, is set to except 280 DEG C at both ends, make hollow protuberance 2a thermally welding with the method identical with above-described embodiment 1 and condition.Its result, the thermal welding that can be manufactured on whole hollow protuberance 2a is long-term and stably in good condition and have the intermediate 3 of sufficient adhesive strength.
< comparative example 1 >
Weight per unit area is made to be 400g/m 2two matrix bands 2 by being arranged on than heat-fused portion 20 heating tank 30 of 120 DEG C by front, and to preheat.Afterwards, insert in this hollow protuberance 2a and to be rotatably configured in heat-fused portion 20 and by making oil circulation make temperature remain on the pin 21a of a pair forming rolls 21 (latch structure: height 6mm, minimum diameter (top ends) 2mm, maximum gauge (bottom) 6mm, about 72 °, angle of inclination) of 40 DEG C.
Then, replace the drying machine formula hot wind generating device 22 of embodiment 1, use to have and can carry out the heater that temperature controlled iron and steel heats the way of contact of block, the heat of width is heated the apex portion of the hollow protuberance 2a of matrix band 2 consistently, utilizes forming rolls 21 to make hollow protuberance 2a thermally welding afterwards.Now, the iron and steel configuring contact-type heating device in the mode of the top ends of the pin 21a along forming rolls 21 heats block, and the design temperature of heater is set to 270 DEG C in the whole region of the width of matrix band 2.
Its result, although carried out thermal welding well each other at the width central portion place of matrix band 2, hollow protuberance 2a, at width both ends place, hollow protuberance 2a not with sufficient strength adhesive, has created poor attachment each other.
< comparative example 2 >
Except being set to except 280 DEG C by the design temperature of heater in the whole region of the width of matrix band 2, make hollow protuberance 2a thermally welding with the method identical with above-mentioned comparative example 1 and condition.Its result, although thermal welding has been carried out well in width both ends, at width central portion place, hollow protuberance 2a warpage, at heat-fused portion place, hollow protuberance 2a creates distortion.In addition, within several minutes such short time from starting, the molten resin iron and steel accumulated near the width central portion of heater coming from matrix band 2 heats block (part that hollow protuberance 2a contacts), and its part is attached to the thermal welding part of intermediate 3.Its result, manufactured intermediate 3 creates shape defect and poor attachment.
< comparative example 3 >
Weight per unit area is made to be 400g/m 2two matrix bands 2 by being arranged on than heat-fused portion 20 heating tank 30 of 120 DEG C by front, and to preheat.Afterwards, insert in this hollow protuberance 2a and to be rotatably configured in heat-fused portion 20 and by making oil circulation make temperature remain on the pin 21a of a pair forming rolls 21 (latch structure: height 6mm, minimum diameter (top ends) 2mm, maximum gauge (bottom) 6mm, about 72 °, angle of inclination) of 40 DEG C.
Then, the hot air blow port nozzle 22a of the drying machine formula heater 22 shown in Fig. 5 used in embodiment 1 being replaced with top ends is used to be not slit-shaped but the drying machine formula heater obtained after overlooking the nozzle of the opening of rectangular-shaped large size, while utilize the entirety of hot blast to matrix band 2 to heat, forming rolls 21 is utilized to make hollow protuberance 2a thermally welding.Now, the design temperature of drying machine formula hot wind generating device is set to 280 DEG C in the whole region of the width of matrix band 2.Its result, the side of hollow protuberance 2a is heated excessively, and therefore shape produces warpage, creates distortion.On the other hand, the top ends of hollow protuberance 2a is not sufficiently heated, and manufactured intermediate 3 sees many shape defects and poor attachment.
Can confirming according to above result, according to the present invention, can realizing being difficult to when carrying out thermal welding to hollow protuberance producing bad and the manufacture method of the hollow structure plate of productivity ratio excellence and manufacturing installation.In addition, according to the present invention, also confirm: compared with the past, can speed of production be improved.
description of reference numerals
1: hollow structure plate; 2: matrix band; 2a: protuberance; 3: intermediate; 4: plane materiel; 5: thermoplastic resin sheet; 10: vacuum forming portion; 11: pressure-reducing chamber; 12,21,23: roller; 12a, 21a: pin; 13: mould; 20: heat-fused portion; 22: hot wind generating device; 22a: nozzle; 22b: hot air blow port; 30: heating tank; 41: temperature meter; 42: heating-up temperature adjusting portion.

Claims (10)

1. a manufacture method for hollow structure plate, wherein,
The manufacture method of this hollow structure plate comprises following operation:
In the face of the side of thermoplastic resin sheet, the hollow protuberance of frusto-conical be formed as staggered by vacuum forming and obtain the operation of matrix band; And
After heating two matrix bands, make the hollow protuberance of these two matrix bands dock also thermal welding each other and carry out integrated operation;
In the operation of this integration, optionally Hot-blast Heating is carried out to the top ends of the hollow protuberance of described matrix band.
2. the manufacture method of hollow structure plate according to claim 1, wherein,
In the operation of described integration, use multiple pin to be formed as staggered and there is cooling or one group of roller of temp regulating function, the pin of this roller is inserted into the hollow protuberance of each matrix band, while cool described matrix band, press the apex portion of each hollow protuberance from inner side at least partially.
3. the manufacture method of hollow structure plate according to claim 2, wherein,
The top ends of described matrix band only hollow protuberance is heated, and other parts are cooled.
4. the manufacture method of the hollow structure plate according to any one of claims 1 to 3, wherein,
In the operation of described integration, heat with the width both ends of the heat of the width central part higher than described matrix band to described matrix band.
5. the manufacture method of the hollow structure plate according to any one of Claims 1 to 4, wherein,
According to the temperature of the intermediate that the operation by described integration obtains, regulate the heating-up temperature of described matrix band.
6. a manufacturing installation for hollow structure plate, wherein,
The manufacturing installation of this hollow structure plate is included in pressure-reducing chamber and is rotatably configured with forming rolls and in the face of the side of thermoplastic resin sheet, the hollow protuberance of frusto-conical is formed as staggered vacuum forming portion and after heating two matrix bands utilizing described vacuum forming portion to be shaped, makes hollow protuberance dock each other and thermal welding and carry out the heat-fused portion of integration
The hot wind generating device for optionally carrying out Hot-blast Heating to the top ends of the hollow protuberance of described matrix band is provided with in described heat-fused portion.
7. the manufacturing installation of hollow structure plate according to claim 6, wherein,
The position that described hot wind generating device is aliging with each hollow protuberance being formed at described matrix band is provided with hot air blow port.
8. the manufacturing installation of hollow structure plate according to claim 7, wherein,
Described hot air blow port is slit-shaped.
9. the manufacturing installation of the hollow structure plate according to any one of claim 6 ~ 8, wherein,
Described hot wind generating device can split control heating-up temperature on the width of described matrix band.
10. the manufacturing installation of the hollow structure plate according to any one of claim 6 ~ 9, wherein, should
The manufacturing installation of hollow structure plate comprises:
Temperature meter, it makes the integration of two matrix bands and the temperature of intermediate that obtains for measuring; And
Heating-up temperature adjusting portion, it is for regulating the heating-up temperature of described matrix band according to the temperature of described intermediate.
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CN104245285B (en) 2017-02-22

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