JP4153063B2 - Trimming device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  In the present invention, the resin molded product and other various articles, when the sheet is bonded to the base material and integrated with the base material to form a laminated product, the sheet protrudes around the base material of the sheet, or the window portion. Trimming device for separating the surplus part remaining so as to cover the cutout opening and the like, that is, the unnecessary part that is not laminated on the base material from the laminated product.In placeRelated.
[0002]
[Prior art]
Conventionally, various methods have been proposed for laminating a sheet with decoration or the like on the surface of various base materials. For example, as described in (1) Japanese Patent Publication No. 50-19132, Japanese Patent Publication No. 43-27488, etc., a sheet is placed between both a female mold for injection molding and a male mold and then melted. A so-called injection molding simultaneous painting method, in which a resin is injected into a mold and filled, and a sheet is bonded and laminated simultaneously with the molding of a resin molded product (base material). (2) Japanese Patent Publication No. 56-45768 As described in Japanese Laid-Open Patent Publication No. 60-58014, etc., the sheet is placed on the surface of a three-dimensional article (base material) that already has a shape, such as a resin molded article, in contact with or opposed to each other with an adhesive in between. There is a so-called vacuum press lamination method in which a sheet is laminated on the surface of a three-dimensional article by a pressure difference caused by vacuum suction from the three-dimensional article side. In addition, as described in (3) Japanese Patent Publication No. 61-5895, Japanese Patent Publication No. 3-2666, etc., the sheet is placed in a direction along the long axis of a columnar base material such as a cylinder or a polygonal column. There is a so-called lapping method or the like in which a plurality of rollers with different directions are pressure-bonded and laminated so as to be wound around the peripheral side surface of the columnar article while being supplied through the adhesive layer.
[0003]
In the above (1), when forming a molded product as a base material, the sheet was integrated at the same time, and the above (2) and (3) were already formed by a molded product as a base material or cutting or the like. This is a method of integrating a sheet with an article as a substrate. In the above (3), the sheets are laminated and integrated without stretching, but in the above (1) and (2), they are usually stretched and integrated.
[0004]
By the way, as in the above (1), (2), (3), etc., when the laminated surface of the substrate on which the sheets are laminated is not flat, a sheet larger than the laminated surface of the substrate is prepared. After the sheets are laminated and integrated on the laminated surface of the material to obtain a laminated product (semi-finished product), trimming is performed to cut off the excess portion protruding from the base material from the laminated product. In particular, when the sheet is stretch-molded as in (1) or (2), it is necessary to fix and hold the outer peripheral edge of the sheet for stretch molding. In order to complete a laminated product as a product (commodity), trimming the surplus portion is required.
Hereinafter, trimming of the surplus portion will be briefly described with reference to FIG.
[0005]
FIG. 5 shows a laminated product 1 produced by the injection molding simultaneous painting method of (1). The laminated product 1 includes a base material 2 made of a resin molded product having a rectangular shape with rounded corners in a plan view in which a hollow window portion 3 is formed in the central portion, and a surface side (upper surface) of the base material 2. In addition to the majority except for the lower part of the outer peripheral surface, the sheet 5 is also bonded and laminated on the upper part of the inner peripheral surface 3a so as to enter and close the hollow window portion 3.
[0006]
Before the trimming, that is, at the time when the simultaneous injection molding is finished, the sheet 5 protrudes to the outer periphery of the laminated product 1 or closes the hollow window portion 3 and is not laminated on the base material 2. The surplus portions 5A and 5B indicated by phantom lines are attached, but the surplus portions 5A and 5B are trimmed after the completion of the injection molding simultaneous painting to obtain a product.
[0007]
As a method for trimming the surplus portions 5A and 5B, conventionally, (A) a manual method using a cutter or the like, and (B) a mechanical and automatic method using an NC (numerical control) router are used. Method (C) as shown in FIG. 6, a method of cutting using cutting blades 65 and 67 corresponding to the shapes of the surplus portions (cutting portions) 5A and 5B (described later), and (D) the applicant of the present application first. (Japanese Patent Application No. 9-274713) proposed in Japanese Patent Application No. 9-274713, a method (described later) for cutting using a push cutting die 20 and a driven cutting die 30 as shown in FIG. 7 is known.
[0008]
Here, a trimming apparatus that performs trimming by pressing the excess portions 5A and 5B of the sheet 5 with the cutting blades 65 and 67 of (C) will be briefly described with reference to FIG. The trimming device 50 shown in the figure is a fixed cutting located on the lower side for fixing and holding the movable cutting die 60 positioned on the upper side that is moved up and down and the laminated product 1 on which the sheets 5 as shown in FIG. 5 are laminated. A mold 70 is provided, and the outer peripheral surplus portion 5A protruding from the outer periphery of the laminated product 1 and the window surplus portion 5B closing the window portion 3 are trimmed together.
[0009]
In this case, the cut portion of the outer peripheral surplus portion 5A of the sheet 5 is a portion close to the lower portion of the outer peripheral surface of the laminated product 1, and the cut portion of the window surplus portion 5B is also the window portion 3. The upper movable cutting die 50 is provided with annular cutting blades 65 and 67 such as Thomson blades corresponding to those cutting portions, and the lower fixed portion is located near the inner peripheral surface 3a. The cutting die 70 is provided with escape recesses 75 and 77 in which the cutting blades 65 and 67 are accommodated when the sheet 5 is cut (FIG. 6B).
The cutting blades 65 and 67 have a triangular cross-section with a sharp tip, and the overall shape is a rectangular tube.
[0010]
In the trimming apparatus 50, the laminated product 1 is fixed to the fixed cutting die 70, and the outer peripheral edge of the sheet 5 is pressed and fixed by a clamper or the like (not shown) as required (FIG. 6A). In this state, the movable cutting die 60 is lowered so as to be dropped by driving means such as a fluid pressure cylinder.
Accordingly, the cutting blades 65 and 67 cut the sheet 5 so as to penetrate the sheet 5 in the thickness direction, and the outer peripheral surplus portion 5A and the window surplus portion 5B of the sheet 5 are separated from the laminated product 1 and trimmed.
[0011]
However, in the trimming apparatus 50 using the cutting blades 65 and 67, the cutting blades 65 and 67 are worn and the sharpness is deteriorated as the number of sheet cutting increases, so that the cutting blades 65 and 67 are frequently maintained. In addition, the cutting blades 65 and 67 are short-lived, and in order to trim a large amount of sheets, it is necessary to replace the cutting blades 65 and 67 or the movable cutting die 60 as a whole, which increases the cost. As a result, there was a dislike that the trimming cost was high.
In order to solve such a problem, the applicant of the present application has proposed the trimming apparatus and method described above in (D). The trimming apparatus and method will be briefly described below with reference to FIG.
[0012]
The trimming apparatus 100 shown in FIG. 7 is basically the same as the one shown in FIG. 6 from the laminated product 1 including the base material 2 and the sheet 5 laminated thereon to the base of the sheets 5. The sheet 5 is for separating the surplus portion 5A that is not laminated on the material 2, and is fixedly held by the fixed product 15 for holding the laminated product 1 and supported so as to be movable in the direction from the front side to the back side of the sheet 5. 5 and a driven cutting die 20 and a driven cutting die 30 which are opposed to each other with the surplus portion 5A interposed therebetween, and a fluid pressure as a driving means for moving the pushing cutting die 20 to the driven cutting die 30 side. The cylinder 40 includes a coil spring 51 and a shock absorber 52 as expansion / contraction support means for supporting the driven cutting mold 30 in a state in which the driven cutting mold 30 can be pushed by the push cutting mold 20. The surface of the cutting die 30 that faces the sheet 2 is a flat surface, and the excess portion 5A of the sheet 5 is cut at the edge portion E of the push-cutting die 20 so as to be separated from the laminate 1. Become.
[0013]
Specifically, in the apparatus 100, the push cutting die 20 and the driven cutting die 30 are sandwiched between the surplus portions 5 </ b> A of the sheet 5 in a state where the laminate 1 is fixed by the fixing and holding unit 15. [FIG. 1 (A)], and the pressing cutting die 20 is moved to the driven cutting die 30 side to clamp the excess portion 5A of the sheet 5 between the die 20 and 30 [FIG. (B)], and in this clamping state, the push cutting die 20 is further moved in the direction from the upper surface side of the sheet 5 = the decorative surface to the lower back surface = the adhesive lamination side, and the driven cutting die 30 is moved to the By pushing downward against the elastic force of the coil spring 51 and the shock absorber 52, the excess portion 5A of the sheet 5 is cut at the edge portion E of the push cutting die 20 and separated from the laminated product 1 [ Fig. 1 (C)] That.
[0014]
More specifically, when the push-cutting die 20 is lowered, the sheet 5 is clamped and fixed to the contact surfaces formed by the flat surfaces of the push-cutting die 20 and the driven cutting die 30, and from this state, the push-cutting die When 20 is continuously lowered further, the driven cutting die 30 is pushed by the pushing cutting die 20 and is moved downward by the pushing amount L while holding the surplus portion 5A of the sheet 5 [FIG. ]]. At this time, the coil spring 51 and the shock absorber 52 constituting the support means are contracted along the length direction in accordance with the pushing amount of the driven cutting die 30.
[0015]
When the driven cutting die 30 is pushed by the push cutting die 20, the surplus portion 5A of the sheet 5 clamped and fixed between the dies 20 and 30 is also moved downward together with them.
Here, since the portion of the sheet 5 that is bonded and laminated to the base material 2 is immobile, the edge portion E of the push cutting die 20 is located at the boundary portion between the surplus portion 5A and the bonded laminated portion. The shear stress and tensile stress due to the above act simultaneously, so that the surplus portion 5A is cut off from the laminate 1 along the edge portion E and trimmed.
[0016]
In this manner, in a state where the surplus portion 5A of the sheet 5 is sandwiched between the pressing cutting mold 20 and the driven cutting mold 30 and fixed with pressure, the sheet 5 is pushed and moved in the direction from the front side to the back side, By applying shear stress and tensile stress simultaneously to a desired cutting location to separate the surplus portion 5A of the sheet 5, the surplus portion 5A of the sheet 5 can be reliably separated from the laminate 1 in a short time. In addition, a clamper or the like for pressing and fixing the outer peripheral edge of the sheet 5 at the time of cutting the sheet becomes unnecessary, the configuration is simplified, and the push cutting mold 20 and the driven cutting mold 30 are not used without using a cutting blade. The surface facing the sheet 5 is flat, and the sheet 5 is cut at the edge portion E of the push-cutting die 20, so that the sharpness is less likely to deteriorate due to wear or the like. Withstand long-term use even when trimming the amount of sheets and need not be carried out frequently the maintenance and replacement. As a result, the apparatus cost and trimming cost can be reduced as much as possible.
[0017]
[Problems to be solved by the invention]
However, the above-described proposed trimming methods / devices (A), (B), (C), and (D) have the following problems.
That is, in the manual trimming method using the cutter (A), it takes a long time to trim a complicated shape, and the trimming cost is increased. In addition, the finish is not stable.
[0018]
In the trimming method / apparatus by the NC router of (B), it is necessary to teach the apparatus the shape to be trimmed for each article. Therefore, the initial setting is complicated and the apparatus is not expensive. In addition, if the temperature in the molding plant changes, the laminate will expand and contract and its dimensions will change, so if you trim the sheet according to the initial settings, the cutting position will shift and you can cut the sheet cleanly. There is a risk of disappearing.
[0019]
In the trimming method and apparatus of (C) and (D), the movable side cutting die (movable cutting die 60, push cutting die 20) and the receiving side cutting die (fixed cutting die 70, driven cutting die 30); Since the material is generally different from that of the laminate 1, there is a difference in thermal expansion coefficient, and the cutting position is shifted as in the case of (B), and the sheet 5 may not be properly trimmed. There is. Incidentally, the base material 2 portion of the laminate 1 usually has a thermal expansion coefficient α of 80 (10, such as ABS resin or polypropylene).^-6/ Degree C) or higher resin materials are often used, whereas the movable side cutting type and the receiving side cutting type are epoxy resins [α = 30 to 90 (10^-6/ Degree C)] or aluminum alloy [α = 22 to 24 (10^-6/ Degree C)] is often used.
[0020]
As one measure for solving the problem that the laminated product expands and contracts due to temperature as described above, it is conceivable to perform the trimming work while adjusting the temperature of the work place to a constant level. Is manufactured by the above injection molding simultaneous painting method / apparatus, from the viewpoint of productivity, after finishing the simultaneous injection molding, the laminated product is taken out from the apparatus (molding die) in a short time to trim the excess part of the sheet On the other hand, even if the temperature of the work place is constant, the temperature of the laminated product taken out after the simultaneous painting of the injection molding is considerably higher than the work place (about 40 degrees C or more), so it is not sufficiently cooled. There are cases where it is necessary to perform trimming. Even in this case, the temperature of the laminated product varies depending on the elapsed time after the completion of the injection molding simultaneous painting, so that the cutting position may be shifted and the sheet may not be cut properly.
[0021]
The present invention has been made to solve the above-described problems, and the object of the present invention is to cut the cutting position due to the expansion and contraction of the laminated product due to the temperature change without reducing the productivity. It is an object of the present invention to provide a trimming method and apparatus capable of effectively avoiding a situation where the sheet cannot be properly trimmed due to slippage.
[0022]
[Means for Solving the Problems]
  Trimming according to the present invention to achieve the above objectapparatusThe substrate and itSheetLaminatedIntegratedThe excess part which is not laminated | stacked on the said base material of the said sheet | seat from the laminated product which becomesTrimming device forAnd beforeWritingThe temperature of the layer productCool downAdjust and hold at set temperatureLaminate temperature control means is providedIt is characterized by.
[0024]
Examples of the temperature adjusting means include an air blowing device that blows air that is adjusted and held at a predetermined temperature on the laminated product.
In a preferred aspect of the trimming apparatus of the present invention, the trimming apparatus includes a pair of a movable-side cutting die and a receiving-side cutting die that are opposed to each other with an excess portion of the sheet interposed therebetween, and the movable cutting die and the receiving-side cutting die are set at a set temperature. A cutting-type temperature control means for adjusting and maintaining the temperature is provided.
As the cutting mold temperature control means, there are those in which a fluid such as water adjusted and held at a set temperature is passed through the cutting mold, and air that is adjusted and held at a predetermined temperature is blown into the cutting mold. Can be mentioned.
In this case, it is preferable that the movable-side cutting die and the receiving-side cutting die are adjusted and held at the same temperature as the laminated product by the cutting die temperature adjusting means.
[0025]
As a more preferable aspect of the trimming apparatus of the present invention, a fixing and holding means for fixing and holding the laminated product, and a movable portion supported in a direction from the front side to the back side of the sheet, with an excess portion of the sheet interposed therebetween A push-cut type and a driven-side cut type that form opposing pairs, drive means for moving the push-cut type to the driven-cut type, and a state in which the driven-cut type can be pushed by the push-cut type A support means made up of elastic members such as a coil spring and a shock absorber, a temperature control means for adjusting the temperature of the laminated product at a set temperature, and adjusting the push cutting type and the driven cutting type to a set temperature. A holding die-type temperature control means, and the surface of the push-cut type and the driven-cut type contacting the sheet is a flat surface, and the laminated product temperature control means and the cutting type temperature control means Each of the laminated product, the push-cutting die and the driven-cutting die is adjusted and held at the same temperature, and then the excess portion of the sheet is cut off at the edge portion of the push-cutting die and separated from the laminated product. The ones that are
[0026]
As the material of the movable side cutting die and the receiving side cutting die, a resin material such as an epoxy resin, a metal material such as an aluminum alloy, ceramic, or the like can be used. In this case, when manufacturing the two cutting dies, the dimensions of the cutting dies are set based on the dimensions when the laminated product is at a set temperature. More preferably, the dimensions are set in consideration of when the cutting die is at the same temperature as the set temperature of the laminated product.
[0027]
In the trimming method and apparatus configured as described above, the temperature of the laminated product is increased by, for example, an air blower provided in the trimming device, immediately before cutting off the excess portion of the sheet and separating it from the laminated product. In a more preferred mode, the two cutting dies are adjusted and held at the same temperature as the laminated product by a cutting die temperature control means provided in the trimming apparatus.
[0028]
Thereby, since the laminated product is maintained at the set temperature at the start of trimming, the dimensions are uniquely determined, and the dimensions of the cutting die are also uniquely determined.
In this case, the dimensions when the laminated product is at a set temperature are known in advance by experiments or the like, and the dimensions of the cutting means such as a cutting die based on the dimensions of the laminated product at the set temperature, that is, Since the sheet cutting position is set, the sheet cutting position does not shift.
[0029]
For this reason, it is possible to effectively avoid a situation in which the cut position is shifted and the sheet cannot be properly trimmed due to the expansion and contraction of the laminated product due to the temperature change without reducing the productivity.
In addition, the lamination | stacking method to which this invention is applicable does not limit the lamination | stacking method of a sheet | seat and a base material. For example, the above-described injection molding simultaneous painting method, vacuum press laminating method, lapping method, or the like.
[0030]
Therefore, the material for the substrate is not particularly limited. If it is a material used in the injection molding simultaneous painting method, etc., thermoplastic resins such as acrylic resin, vinyl chloride resin, ABS (acrylonitrile / butadiene / styrene copolymer) resin, polycarbonate resin, polyethylene, polypropylene, etc. Examples thereof include curable resins such as liquid curable urethane resins and phenol resins. In addition, in the case of a vacuum press lamination method or a lapping method, as a material for the substrate, in addition to the above-mentioned various resins, metals or metal alloys such as aluminum, iron, stainless steel and brass, wood plywood, wood single Wood, such as a plate, medium density fiberboard (MDF), ceramics such as glass, ceramics, and tiles, cement such as ALC (lightweight cellular concrete), GRC (fiber reinforced concrete), and the like. Moreover, the shape of the substrate is also a rod-like body such as a flat plate, a curved plate, or a polygonal column.
[0031]
And as a sheet | seat which can be trimmed by this invention, only the sheet | seat layer for surface protection of a base material or the decoration sheet by which the decoration process was given to the sheet | seat can be mentioned. A typical example of the sheet is a resin sheet. Examples of the resin for the resin sheet include polyvinyl chloride, polyvinylidene chloride, vinyl chloride resins such as vinyl acetate-vinyl chloride copolymer, styrene resins such as polystyrene and ABS resin, PMMA (polymethyl methacrylate), Acrylic resins such as polybutyl methacrylate and polyacrylonitrile, polyamide resins such as nylon 6 and nylon 66, polyolefin resins such as polyethylene, polypropylene, polymethylbenten, and olefin thermoplastic elastomer, celluloses such as cellulose acetate and nitrocellulose Resin, polyethylene terephthalate, polybutylene terephthalate, ethylene terephthalate-isophthalate copolymer, polyester resin such as polyarylate, butadiene rubber, chloroprene rubber, silicone rubber, etc. Beam based resin, polyvinylidene fluoride, polyvinyl fluoride or fluorine resin, urethane-based thermoplastic elastomer, a polycarbonate, or the like. The base sheet is a laminate composed of a single layer or multiple layers of these resins.
[0032]
Among these resins, rubber resins and thermoplastic elastomers are difficult to cut due to their physical properties. In addition, acrylic resins such as PMMA, polycarbonate, polystyrene and the like are easily cut due to their physical properties.
In addition to the resin sheet, the sheet may be paper, woven fabric, nonwoven fabric, metal sheet (metal foil), or the like, or a laminate of these and a resin sheet.
[0033]
And a sheet | seat is a thing by which the decoration process etc. were normally given to the said sheet | seat single body or the said sheet | seat normally.
Next, as a decoration treatment applied to the sheet made of resin, coloring of the base material sheet itself by kneading a pigment or dye, or formation of a decoration layer made of a pattern or a metal thin film layer, formation of an uneven pattern, etc. is there.
[0034]
In decoration by kneading a pigment or the like into a sheet, a decoration process is performed to make the sheet colorless and transparent or colored and transparent, colorless or opaque or colored and opaque. Examples of the pigment include inorganic pigments such as titanium white, carbon black, ultramarine blue, petal, yellow lead, and organic pigments or dyes such as quinacridone, isoindolinone, phthalocyanine blue, and aniline black. In addition, extender pigments (fillers) such as calcium carbonate, silica (silicon dioxide), alumina (aluminum oxide), and barium sulfate are added as necessary.
[0035]
As a printing method for forming a decorative layer by pattern printing, it is performed by a normal printing means such as gravure printing, offset printing, letterpress printing, silk screen printing, etc., but there is also a forming method by drawing. In addition, a transfer sheet in which an ink layer and, if necessary, an adhesive layer is formed on a releasable sheet is prepared in advance, and the ink layer formed on the transfer sheet is pressed or pressed and heated. A so-called transfer printing method in which the decorative layer (ink layer) is transferred onto the surface can also be used. The pattern of the pattern is arbitrary, for example, a wood grain pattern, a stone pattern, a geometric pattern such as a character or a figure, a solid surface or the like. In addition, the decoration layer (ink layer) by pattern printing has a form etc. which are formed between the said sheet | seat surface side and back surface side, or the said two-layered sheet | seat.
[0036]
In order to form the decoration layer as a metal thin film layer, a metal such as aluminum or chromium is formed as a thin film by vacuum deposition or the like. The metal thin film may be formed on the entire surface, or may be formed in a pattern so that the pattern as described above can be obtained. The metal thin film layer is vapor-deposited on the entire surface from the surface provided with a desired pattern, and then washed with water to remove the metal thin film layer immediately above the removal layer together with the removal layer. Of course, the metal thin film layer previously formed on the transfer sheet may be transferred and formed on the surface on which the decoration layer is formed by the transfer printing method.
[0037]
In addition, an uneven pattern may be applied as a decoration process. In order to apply the concavo-convex pattern, a concavo-convex pattern having a concavo-convex shape is formed on the surface of the sheet such as a resin sheet by hairline processing, sandblasting, embossing or the like. For example, embossing is performed by pressing an embossed plate against the surface of a heat-softened resin sheet using a hot press type sheet or a rotary type embossing machine, and forming an uneven shape on the surface of the embossed plate. Form. In addition, the concave and convex portions formed on the resin sheet may be filled with colored ink by a known wiping method.
[0038]
In addition, on the back of the decorative sheet, in order to improve the adhesion to the base material such as a molded product to be laminated, the sheet surface is subjected to easy adhesion treatment such as corona discharge treatment and various known primer coatings, and a heat-sensitive adhesive layer. Is used as appropriate. For such an adhesive layer, a resin such as a thermoplastic resin, a thermosetting resin, or an ionomer is used. Specific examples of the resin include cellulose derivatives such as ethyl cellulose, cellulose nitrate, cellulose acetate, ethyl hydroxyethyl cellulose, and cellulose acetate propionate, styrene resins such as polystyrene and poly α-methylstyrene, styrene copolymers, and poly (meth). Acrylic resin such as butyl acrylate, polyvinyl chloride, polyvinyl acetate, vinyl chloride-vinyl acetate copolymer, ethylene-vinyl alcohol copolymer, vinyl copolymer such as polyvinyl butyral, rosin, rosin modified maleic acid resin, Rosin-modified phenolic resins, rosin ester resins such as polymerized rosin, rubber resins such as polyisobrene rubber, polyisobutyl rubber, styrene butadiene rubber, butadiene acrylonitrile rubber, coumarone resin, vinyl toluene resin, poly De resins, natural or synthetic resins such as poly-chlorinated olefins, one or more mixtures of such as various ionomers are used.
[0039]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
2 to 4 are schematic views showing an embodiment of a trimming apparatus according to the present invention. The illustrated trimming device 10 closes the outer peripheral surplus portion 5A and the window portion 3 that are not stacked on the base material 2 of the sheet 5 from the laminated product 1 obtained by simultaneous injection molding, and that protrudes to the outer periphery. The window surplus portion 5B is cut and trimmed together.
[0040]
The laminate 1 obtained by the simultaneous injection molding is a rectangular plate with a rounded corner in a plan view in which a hollow window portion 3 is formed in the center, as shown in FIG. In addition to most of the base material 2 made of a panel-shaped resin molded product and the lower part of the outer peripheral surface on the surface side (upper surface side) of the base material 2, it enters the hollow window portion 3 and closes it. Thus, the sheet 5 is laminated on the inner peripheral surface 3a. The substrate 2 is made of a heat-resistant ABS material, and has a length of about 100 mm, a width of about 150 mm, and the hollow window portion 3 having a depth of about 20 mm.
[0041]
Further, as the sheet 5, here, a base sheet made of acrylic resin (thickness is 125 μm) and a decorative layer made of printing ink laminated thereon by a gravure printing method (the binder is acrylic resin and vinyl chloride vinyl acetate). A 1: 1 weight ratio mixture of copolymer) and an adhesive layer (a mixture of vinyl chloride and vinyl acetate copolymer system is used as a binder), and the base sheet is the base 2 (injection resin) of the laminate 1 A laminated laminate sheet (laminate sheet) that is used as a final product while being closely integrated with a molded product) is used. The decorative layer (pattern layer) is a wood grain pattern combining three colors of pattern plates, and the adhesive layer is a gravure solid printing plate (plate depth 60 μm) having a screen line number of 40 lines / cm. A layer having a thickness of 2 μm formed by printing two colors.
[0042]
Here, the outer peripheral surplus part 5A and the window surplus part 5B of the sheet 5 adhered and laminated to the base material 2 are bent at a substantially right angle from the adhesive laminated part and extend horizontally, and their cut portions are It is a part (root part) close to the lower part of the outer peripheral surface of the laminated product 1 and a part (base part) close to the inner peripheral surface 3 a of the window 3. The outer peripheral surplus portion 5A and the window surplus portion 5B are portions that are brought into contact with the male part and female parting surfaces at the time of injection painting simultaneous painting, respectively.
[0043]
The trimming apparatus 10 of the illustrated embodiment includes a plurality of fixing holders 15 that fix and hold the laminated product 1 horizontally and the vertical direction, that is, from the front side (upper side = decorative surface) of the sheet 5 to the back side (lower side). = Pushing cutting mold 20 and driven cutting mold 30 which are supported so as to be movable in the direction toward the adhesive lamination side) and which are opposed to each other with the surplus portion 5A of the sheet 5 interposed therebetween, and the above pressing cutting mold An air cylinder 40 as a driving means for moving 20 to the driven cutting die 30 side, a required coil spring 51 and a shock absorber 52 for supporting the driven cutting die 30 in a state where the driven cutting die 30 can be pushed by the push cutting die 20. And a plurality of guide bars 45 for guiding the push cutting die 20 and the driven cutting die 30 in the vertical direction.
[0044]
Here, the push cutting mold 20 and the driven cutting mold 30 are made of epoxy resin, and when the both cutting molds 20 and 30 are manufactured, the laminate 1 is set to a set temperature, in this case, 25 degrees C. These dimensions are set in consideration of certain dimensions and when both the cutting dies 20 and 30 are at the same temperature as the set temperature (25 ° C.) of the laminate 1. The dimensions are set in this way if the dimensions of both the cutting dies 20 and 30 are set in consideration of the state when the laminate 1 and the both cutting dies 20 and 30 are at the same temperature. This is because the position is constant.
[0045]
The push-cut die 20 has a shape similar to or similar to a female die used for simultaneous injection molding, and is provided with a concave portion 27 that is substantially similar to the outer peripheral surface of the laminate 1 and is recessed at the center. The outer peripheral portion is an outer peripheral pressing portion 21 having an outer peripheral contact surface 21a composed of a plane that is in contact with the outer peripheral surplus portion 5A of the sheet 5, and the central portion thereof is in the hollow window portion 3 of the laminate 1 A convex window sandwiching portion 22 having a window contact surface 22a formed by a plane that is inserted and is in contact with the window surplus portion 5B of the sheet 5 is formed.
[0046]
Further, the driven cutting die 30 has a shape similar to or similar to the male die used for simultaneous injection molding, and the outer peripheral contact surface is formed by a flat surface whose outer peripheral portion is in contact with the outer peripheral surplus portion 5A of the sheet 5. The outer peripheral pressing part 31 having 31a is inserted into the hollow window part 3 of the laminated product 1 at the center part thereof, and the window part contact surface 32a is formed of a plane that contacts the window surplus part 5B of the sheet 5. The convex window portion clamping portion 32 having
[0047]
And in the inside of the said push cutting type 20 and the driven cutting type 30, the temperature control water channel | path 25 as a cutting | disconnection type | mold temperature control means which adjusts and holds them at the same setting temperature (25 degree C) as the said laminated product 1, 35 are provided in a predetermined arrangement form. Water adjusted and held at the set temperature (25 ° C.) is circulated through the temperature adjusting water passages 25 and 35 through flexible hoses 26 and 36 from an external pump.
[0048]
The plurality of fixing holders 15 for fixing and holding the laminated product 1 includes a chucking device that holds the laminated product 1 from the back side by using a pressing force by a spring so that the laminated product 1 is not damaged. Are arranged in parallel (for example, a total of four in the front-rear and left-right directions) to hold the laminated product 1 horizontally in an immobile state.
[0049]
The air cylinder 40 that moves the push-cutting die 20 toward the driven-cutting die 30 is attached to the upper housing 11 in a posture in which the piston rod faces downward, and the tip of the piston rod is attached to the air cylinder 40. It is connected to the central portion of the upper surface of the push-cutting die 20 so that the push-cutting die 20 can be moved downward so as to drop and can be pulled upward. Although only one air cylinder 40 is used here, a plurality of air cylinders 40 may be used. In this case, the air cylinders are operated in synchronization. Further, the drive means of the push-cut type 20 is not limited to an air cylinder, and other devices using a motor, a link mechanism, a screw feed mechanism, a rack / pinion, or the like can also be used. Further, in order to move the push cutting die 20 downward, it may be dropped by its own weight without applying a driving force.
[0050]
In the present embodiment, the push cutting mold 20 and the driven cutting mold 30 are opposed to each other in the vertical direction. However, they may be arranged to be opposed to the left and right, or they may be arranged in reverse.
A plurality of guide bars 45 for guiding the push-cutting mold 20 and the driven-cutting mold 30 in the vertical direction are, for example, at the four corners of the outer periphery pressing portions 21 and 31 of the push-cutting mold 20 and the driven-cutting mold 30, respectively. The upper and lower ends are connected to the upper housing 11 and the lower housing 12.
[0051]
The coil spring 51 and the shock absorber 52 that support the driven cutting mold 30 are provided in total of six pairs, three in each of the front and rear of the driven cutting mold 30, so that the driven cutting mold 30 can be used for the push cutting. When not being pushed downward by the mold 20, as shown in FIG. 3, the outer peripheral surplus portion 5A and the window surplus portion 5B of the sheet 5 are placed on the outer peripheral contact surface 31a and the window contact surface 32a. It is designed to take an initial position where it can be placed.
[0052]
In addition to the above configuration, in the present embodiment, the laminated product 1 supported by the fixed holder 15 is adjusted and held at a set temperature (25 ° C.) between the push cutting die 20 and the driven cutting die 30. As a laminated product temperature adjusting means, a blow nozzle 16 of an air blowing device for blowing air adjusted and held at a predetermined temperature is disposed on the surface side of the laminated product 1 with a predetermined arrangement form. The blow nozzle 16 can be retracted outward from between the push cutting die 20 and the driven cutting die 30 at the start of trimming.
[0053]
Further, the temperature of the water circulating through the temperature adjusting water passages 25 and 35 provided in the push cutting die 20 and the driven cutting die 30 and the temperature of the air blown from the blow nozzle 16 are set temperatures (25 In order to perform feedback control so that the degree C) is reached, temperature sensors 18 for detecting temperatures of the laminated product 1, the push-cutting die 20, and the driven-cutting die 30 are installed at their required locations.
[0054]
When trimming the surplus portion of the sheet 5 in the laminated product 1 by the trimming apparatus 10 of this embodiment having such a configuration, first, as a preliminary step, as shown in FIG. Placed on the belt conveyor 90 on the surface side of the high-temperature laminate 1 having a temperature of about 40 ° C., which is later taken out and transported toward the trimming device 10 while being placed on the transport base 92 by the belt conveyor 90. The air adjusted and held at a predetermined temperature (about 25 ° C.) is blown from a required blow nozzle 95 of the air blow device thus formed for a predetermined time (for example, about 10 seconds), so that the temperature of the laminated product 1 is close to the set temperature (25 Forcibly cooled until the temperature decreases to +2 degrees).
[0055]
Next, the laminate 1 forcibly cooled to about 25 ° C. is fixedly held by the fixing holder 15, and the outer periphery pressing portions 21 and 31 of the push cutting die 20 and the driven cutting die 30 and the window pressing force. The portions 22 and 32 are opposed to each other with the outer peripheral surplus portion 5A and the window surplus portion 5B of the sheet 5 interposed therebetween (FIG. 2).
At this time, the water adjusted and held at the set temperature (25 ° C.) by the feedback control is circulated in the temperature adjusting water passages 25 and 35. Therefore, the push cutting mold 20 and the driven cutting mold 30 are circulated. Is kept at the set temperature (25 ° C.).
[0056]
Further, the laminated product 1 fixedly held by the fixed holding tool 15 and set between the push cutting die 20 and the driven cutting die 30 is set to a set temperature (25 ° C.) by feedback control from the blow nozzle 16. Air that is adjusted and held is blown. Therefore, the laminate 1 is adjusted and held at a set temperature (25 degrees C).
[0057]
In this way, while the push cutting mold 20, the driven cutting mold 30, and the laminated product 1 are adjusted and held at the same set temperature (25 degrees C), the blow nozzle 16 is moved to the push cutting mold. After retracting outward from between 20 and the driven cutting die 30, the air cylinder 40 is operated to project the piston rod downward, and the push cutting die 20 is dropped to the driven cutting die 30 side. The excess portions 5A and 5B of the sheet 5 are clamped between the outer peripheral clamping parts 21 and 31 and between the window clamping parts 22 and 32 (FIG. 3). The driven cutting die 20 is moved so as to continuously drop in a direction from the front side (upper side = design surface) of the sheet 5 to the back side (lower side = adhesive lamination side), and the driven cutting die 30 is moved. The coil spring 51 and the shock absorber 52 Pushing downward against the sexual power.
[0058]
As a result, the outer peripheral surplus portion 5A and the window surplus portion 5B of the sheet 5 are cut at the edge portions Ea and Eb of the outer peripheral pressing portions 21 and 31 and the window pressing portions 22 and 32 of the push cutting die 20. And separated from the laminate 1 (FIG. 4).
In this case, the lowest positions of the push cutting mold 20 and the driven cutting mold 30 are regulated by the air cylinder 40, the shock absorber 52, or a stopper provided in another part.
[0059]
More specifically, when the push-cutting die 20 is lowered, the sheet 5 is clamped and fixed between the contact surfaces 21a-31a and 22a-32a, which are flat surfaces of the push-cutting die 20 and the driven cutting die 30, respectively. When the push cutting die 20 is further lowered continuously from this state, the driven cutting die 30 is pushed by the push cutting die 20 so as to pinch the outer peripheral surplus portion 5A and the window surplus portion 5B of the sheet 5. As it is, it is moved downward by a pushing amount L (about 5 mm in this case) and stopped there by the stopper or the like (FIG. 4). At this time, the coil spring 51 and the shock absorber 52 constituting the support means are contracted along the length direction in accordance with the pushing amount of the driven cutting die 30.
[0060]
When the driven cutting die 30 is pushed by the push cutting die 20, the outer periphery of the sheet 5 that is clamped and fixed between the outer peripheral clamping portions 21 and 31 and between the window clamping portions 22 and 32. The surplus portion 5A and the window surplus portion 5B are also moved downward together with them.
[0061]
Here, since the portion of the sheet 5 bonded and laminated to the base material 2 is immobile, the pushing portion is not applied to the boundary portion between the outer peripheral surplus portion 5A and the window surplus portion 5B and the adhesive laminated portion. The shear stress and the tensile stress due to the edge portions Ea and Eb of the outer periphery pressing portion 21 and the window pressing portion 22 of the cutting die 20 act simultaneously, so that the outer peripheral surplus portion 5A and the window surplus portion 5B are The laminated product 1 is cut along the edge portions Ea and Eb and trimmed.
[0062]
As described above, in the trimming apparatus 10 according to the present embodiment and the trimming method using the trimming apparatus 10, the excess portions 5 </ b> A and 5 </ b> B of the sheet 5 are sandwiched between the pressing cutting die 20 and the driven cutting die 30 and fixed with pressure. Since the sheet 5 is pushed and moved in the direction from the front side to the back side, the shearing stress and the tensile stress are simultaneously applied to the desired cutting location to separate the excess portions 5A and 5B of the sheet. The surplus portions 5A and 5B can be reliably and quickly separated from the laminated product 1, and a clamper for pressing and fixing the outer peripheral edge of the sheet 5 at the time of cutting the sheet is unnecessary, and the configuration is simplified. In addition, the cutting blade is not used, and the sheet 5 is cut by the edge portions Ea and Eb of the push-cutting die 20, so that it can withstand long-term use and can be maintained and replaced. Need not be carried out to Shigeru. As a result, the apparatus cost and trimming cost can be reduced as much as possible.
[0063]
In the apparatus 10 of the present embodiment, when the amount of pushing of the driven cutting die 30 by the pushing cutting die 20 reaches the maximum, in other words, the driven cutting die 30 is pushed downward by the amount of pushing L. 5, a gap S is formed between the stacked portion of the sheets 5 and the surface (recessed portion 27) of the push cutting die 20 on the sheet 5 side. . Thereby, it is possible to prevent the decorative surface of the sheet 5 from being damaged.
[0064]
In addition to the above effects, in the present embodiment, as a preliminary stage, the laminated product 1 is lowered to the vicinity of the set temperature (25 degrees + -2 degrees) by air blowing on the belt conveyor 90 by the trimming start time. And the water adjusted and held at the set temperature (25 ° C.) is circulated through the temperature adjusting water passages 25 and 35, so that the push cutting mold 20 and the driven cutting mold 30 are respectively set at the set temperature. The set temperature (25 degrees C) is also applied to the laminated product 1 that is kept at (25 degrees C) and is fixedly held by the fixing holder 15 and set between the push cutting mold 20 and the driven cutting mold 30. Since the adjusted air is blown to maintain the set temperature (25 ° C.), the dimensions are uniquely determined since the laminated product is maintained at the set temperature at the start of trimming. Also, turn off Similarly, the dimensions of the mold are uniquely determined, and the push cutting mold 20 and the driven cutting mold 30 are the dimensions when the laminated product 1 is at a set temperature (25 ° C.), And, since the dimensions are set in consideration of the case where the both cutting dies 20 and 30 are at the same temperature as the set temperature (25 degrees C) of the laminated product 1, the cutting position of the sheet is shifted. Nothing happens.
For this reason, it is possible to effectively avoid a situation in which the cut position is shifted and the sheet cannot be properly trimmed due to the expansion and contraction of the laminated product due to the temperature change without reducing the productivity.
[0065]
【The invention's effect】
  As is clear from the above description, the trimine according to the present invention.GroupAccording to the arrangement, the temperature of the laminated product is adjusted and held at a set temperature immediately before the excess portion of the sheet is cut and separated from the laminated product, and the movable cutting die and the receiving device constituting the trimming apparatus are held. Since the side cutting type is also adjusted and held at the set temperature, the cutting position of the sheet does not shift, and as a result, the laminated product expands and contracts due to temperature change without reducing productivity. Due to this, it is possible to effectively avoid a situation in which the cutting position is shifted and the sheet cannot be properly trimmed.
[Brief description of the drawings]
FIG. 1 is a diagram for explaining one step of a trimming method according to the present invention.
FIG. 2 is a cross-sectional view showing an embodiment of a trimming apparatus according to the present invention.
FIG. 3 is a cross-sectional view for explaining the operation of the trimming apparatus shown in FIG. 1;
4 is a cross-sectional view for explaining the operation of the trimming apparatus shown in FIG. 1;
5A and 5B show an example of a laminated product to which the present invention is applied, in which FIG. 5A is a plan view, and FIG. 5B is a cross-sectional view taken along line XX in FIG.
FIG. 6 is a cross-sectional view showing an example of a conventional trimming apparatus.
FIG. 7 is a partial cross-sectional view showing an example of a trimming apparatus previously proposed by the applicant of the present application.
[Explanation of symbols]
1 Laminated product
2 Base material
3 Hollow window
5 sheets
5A outer peripheral surplus part
5B Window surplus part
10 Trimming device
15 Fixed holder
16 Blow nozzle
18 Temperature sensor
20 Push-cut type
21 Outer pinching part
22 Window clamping part
25 Temperature controlled water passage
30 Followed cutting type
31 Outer pinching part
32 Window clamping part
35 Temperature control water passage
40 Air cylinder
45 Guide bar
51 Coil spring
52 Shock absorber
90 belt conveyor
95 Blow nozzle

Claims (6)

A trimming apparatus for separating the surplus portion not laminated on the base material of the sheet from the laminate substrate and the sheet thereto, which are integrally laminated, cooled the temperature of the laminate laminate temperature control means for adjusting maintained at the set temperature Te trimming device, wherein a is provided. 2. The trimming apparatus according to claim 1 , wherein the temperature adjusting means is composed of an air blowing device that blows air adjusted and held at a predetermined temperature to the laminated product. And a said sandwiching the excess portion of the sheet oppositely disposed soluble Dosetsu sectional type pairs and receiving-side truncated, truncated temperature adjusting means for adjusting holding the movable truncated and receivingside truncated to a set temperature The trimming apparatus according to claim 1 , wherein a trimming apparatus is provided. The truncated temperature control means, trimming device according to claim 3, characterized in that it is the friendly Dosetsu sectional type and receiving-side truncated so as to adjust kept at the same temperature as the laminate. A trimming device for separating an excess portion of the sheet that is not laminated on the base material from a laminated product in which the sheet is laminated and integrated with the base material,
Wherein the fixed holding means a laminate for fixedly holding, the front pressing truncated and a pair opposing each other between the surplus portion of the movably supported sheet toward the back side from the slave movement of the seat a disconnect-type, and driving means for moving the pressing truncated to the driven truncated side supporting means for supporting in pushed state capable the driven truncated by the pressing truncated, the laminate Laminated product temperature adjusting means for cooling and adjusting the set temperature to a set temperature, and cutting type temperature adjusting means for adjusting and holding the push cutting type and the driven cutting type at a set temperature, and the push cutting type The surface of the driven cutting die that contacts the sheet is a flat surface, and the laminated product temperature control means and the cutting die temperature control means make the laminated product, the push cutting die, and the driven cutting die have the same temperature, respectively. After adjusting and holding, the push-cut type Tsu trimming device, characterized in that di-part cutting the excess portion of the sheet is to decouple from the laminate. 6. The trimming apparatus according to claim 5 , wherein the support means is constituted by an expansion / contraction member such as a coil spring or a shock absorber.

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