WO2010110014A1 - 射出成形用金型、射出成形方法及び射出成形品 - Google Patents
射出成形用金型、射出成形方法及び射出成形品 Download PDFInfo
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- WO2010110014A1 WO2010110014A1 PCT/JP2010/053224 JP2010053224W WO2010110014A1 WO 2010110014 A1 WO2010110014 A1 WO 2010110014A1 JP 2010053224 W JP2010053224 W JP 2010053224W WO 2010110014 A1 WO2010110014 A1 WO 2010110014A1
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- Prior art keywords
- mold
- injection
- pins
- resin
- cavity
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Classifications
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2628—Moulds with mould parts forming holes in or through the moulded article, e.g. for bearing cages
Definitions
- the present invention relates to an injection mold, an injection molding method, and an injection molded product.
- injection molding has been widely used as a method for molding resin products.
- a pin that comes into contact with the cavity surface of the other mold when the mold is clamped is erected on one of the two divided molds. Is generally formed.
- the other mold and the tip of the pin do not contact each other strictly so as not to damage the other mold by contact, and a slight gap of about 20 ⁇ m is interposed even when the mold is clamped. Yes.
- the resin hardly enters the slight gap, and no burrs are generated in the through-hole portion, or the size is such that there is no problem as a product even if it occurs. .
- a molding method that increases the fluidity of the resin to achieve high transfer such as a heat cycle molding method in which the temperature of the mold surface is raised to the vicinity of the thermal deformation temperature of the injected resin, or carbon dioxide gas or cavities that plasticize the resin.
- a contact portion with the pin is provided in the other mold as a structure that can slide in the contact / separation direction, and this contact portion must be structured to be pressed by the coil spring from the inside of the other mold. In this structure, the resin enters the gap between the sliding portions, and burrs are generated.
- Patent Document 1 discloses a form in which a plurality of pins are integrated and pressed toward the other mold with a common biasing member.
- this method has a drawback in that high accuracy is required for the processing accuracy of the integrated pin itself and the relative positional accuracy with respect to the insertion hole of the mold.
- the present invention has been made in view of the above circumstances, and is an injection mold capable of forming a plurality of through-holes while effectively suppressing the occurrence of burrs, an injection molding method, and an injection molded product thereby
- the issue is to provide
- an injection mold including a fixed mold and a movable mold, and forming a cavity into which resin is injected between the fixed mold and the movable mold.
- One of the fixed mold and the movable mold, and a mold having a plurality of insertion holes, and the other end of the cavity is inserted into the insertion hole when the mold is clamped.
- a plurality of rod-shaped pins that come into contact with the mold;
- a pressing member disposed outside the cavity to collectively press the plurality of pins from the base end side of the plurality of pins toward the other mold side during the mold clamping; It is an injection mold characterized by having.
- the pressing member is preferably made of an elastomer (elastic resin, rubber, etc.), a parallel spring, or a buffer member filled with gas or liquid.
- elastomer includes not only elastic resins and rubbers, but also resins that exhibit the pressing force required in the present invention even if they are not generally classified as elastic resins. It is used as a broad term.
- this injection mold It is preferably used for at least one of a heat cycle molding method, a gas assist molding method, and an adiabatic molding method.
- the pressing force that the pressing member applies to the plurality of pins is preferably 2 to 55 MPa, and more preferably 2 to 15 MPa.
- the pressing member may be composed of a sheet-like elastic member arranged so as to press the end surfaces of the base end portions of the plurality of pins provided on the one mold toward the other mold. preferable.
- the other mold is preferably formed of a material having low hardness or high brittleness.
- a second aspect of the present invention there is an injection molding method, Using the injection mold of the present invention, The cavity is filled with a molding material, and the shape of the cavity is transferred.
- a resin injection molded product Molded using the injection mold of the present invention, It has at least one of an optical mirror surface, an optical spherical surface, an optical aspherical surface, an optical free-form surface, and a fine structure.
- a resin molded product for a microchip having a fine channel having a width and a depth in the range of 10 to 200 ⁇ m is preferable.
- the pressing member that collectively presses the plurality of pins is disposed outside the cavity, variation in the pressing force at each of the plurality of pins is reduced, and the pressing force due to deterioration of the pressing member is reduced. And the occurrence of large burrs caused by the resin entering between the tip of the pin and the other mold can be suppressed.
- FIG. 4A is a sectional view taken along the line III-III
- FIG. 4B is a sectional view taken along the line IV-IV.
- It is a top view of a resin substrate on which a channel groove is formed.
- 1 is a side sectional view of an injection mold according to the present invention. It is a bottom view of the fixed mold in the injection mold according to the present invention. It is a top view of the movable mold among the injection molds according to the present invention.
- FIG. 1 is a top view of a microchip 1 which is an embodiment of an injection molded product according to the present invention
- FIG. 2 (a) is a sectional view taken along line III-III in FIG. 1
- FIG. 4 is a cross-sectional view taken along the line IV-IV of FIG. 1, and FIG.
- the microchip 1 has a fine structure such as microchannels 15 and 16, which will be described later, and performs chemical reaction, separation, analysis, and the like of a liquid sample such as nucleic acid, protein, and blood.
- the microchip 1 includes two rectangular plate-like resin substrates 10 and 20 which are laminated and bonded to each other on the inner stomach surfaces 10A and 20A.
- FIGS. 2 (a) and 3 linear channel grooves 12, 13 are formed on the abdominal surface 10A of the resin substrate 10, as shown in FIGS. 2 (a) and 3, linear channel grooves 12, 13 are formed. Further, as shown in FIG. 3, through-holes 14 penetrating in the thickness direction of the resin substrate 10 are respectively formed at both ends of the flow path grooves 12 and 13.
- the channel groove 12 and the channel groove 13 in the present embodiment are formed orthogonal to each other, they may be formed without being orthogonal to each other.
- the resin substrate 10 has through-holes 18 penetrating in the thickness direction in the vicinity of two corners diagonally when viewed from above. Each is formed.
- a cylindrical protrusion 31 is provided around each through-hole 14 in the back surface 10B of the resin substrate 10.
- a cylindrical protrusion 32 is provided around each through hole 18.
- These protrusions 31 and 32 surround the through holes 14 and 18 and protrude in the thickness direction of the resin substrate 10.
- the protrusion 31 is fitted into a tube or nozzle of an analyzer (not shown) to introduce or discharge a sample or the like, and the protrusion 32 connects the microchip 1 to the analyzer. It is used for positioning when installed on Such protrusions 31 and 32 may have a cylindrical shape, or may have other shapes such as a polygonal shape.
- the dimension of the projection part 31 is arbitrarily set according to the dimension of a tube or a nozzle.
- the resin substrate 20 is a member having a smooth surface, and is bonded to the abdominal surface 10 ⁇ / b> A (formation surface of the flow path grooves 12 and 13) in the resin substrate 10. ing.
- the resin substrate 20 functions as a cover (cover) for the flow path grooves 12 and 13 and the through hole 14, and the fine flow path 15 is formed between the flow path grooves 12 of the resin substrate 10 and the flow path.
- a fine channel 16 is formed between the groove 13 and the through hole 14 to form an opening 17.
- the resin substrate 20 is formed with through holes 21 penetrating in the thickness direction at positions corresponding to the through holes 18 of the resin substrate 10.
- the through holes 21 are used together with the through holes 18 for positioning the respective substrates when the resin substrate 10 and the resin substrate 20 are joined.
- the through hole 21 communicates with the through hole 18 by joining the resin substrate 10 and the resin substrate 20, and the through hole 18 forms a positioning hole 19.
- the positioning hole 19 is used for positioning when the microchip 1 is installed in an analyzer (not shown).
- the shape of the microchannels 15 and 16 takes into consideration the fact that the amount of analysis sample and reagent used can be reduced, the fabrication accuracy of molds, transferability, and mold release properties.
- the shape is preferably in the range of 10 ⁇ m to 200 ⁇ m in both width and depth, but is not particularly limited and may be determined depending on the use of the microchip. Further, the width and depth of the fine channels 15 and 16 (channel grooves 12 and 13) may be the same or different.
- the cross-sectional shape of the microchannels 15 and 16 is a rectangular shape, but this shape is an example, and other shapes such as a circular shape may be used.
- the opening 17 formed by the through hole 14 is connected to the fine flow paths 15 and 16. .
- the opening 17 is a hole for introducing, storing, and discharging a gel, a sample, and a buffer solution, and is connected to a tube or nozzle provided in an analyzer (not shown). Thus, a gel, a sample, a buffer solution, or the like is introduced into or discharged from the fine channels 15 and 16.
- the shape of the opening 17 (through hole 14) and the positioning hole 19 (through hole 18) is not limited to a circular shape, and may be various other shapes such as a rectangular shape.
- the inner diameters of the opening 17 (through hole 14) and the positioning hole 19 (through hole 18) may be adapted to the analysis method and the analysis apparatus, and are preferably about 1 to 4 mm, for example.
- the shapes of the resin substrates 10 and 20 described above may be any shape as long as they are easy to handle and easy to analyze, but are preferably square, rectangular, circular, or the like. Further, the size of the resin substrates 10 and 20 is preferably about 10 mm square to 200 mm square, and more preferably 10 mm square to 100 mm square. Further, the plate thickness of the resin substrate 10 on which the channel grooves 12 and 13 are formed is preferably about 0.2 mm to 5 mm, more preferably 0.5 mm to 2 mm in consideration of moldability.
- the thickness of the resin substrate 20 functioning as a lid (cover) is preferably about 0.2 mm to 5 mm, more preferably 0.5 mm to 2 mm in consideration of moldability.
- a film sheet member
- the thickness of the film is preferably 30 ⁇ m to 300 ⁇ m, and more preferably 50 ⁇ m to 150 ⁇ m.
- the resin substrates 10 and 20 are molded by an injection molding method described later, and a resin is used as a molding material.
- a resin is used as a molding material.
- this resin those having good moldability (transferability, releasability), high transparency, and low autofluorescence with respect to ultraviolet rays and visible light are preferable.
- thermoplastic resins are used.
- thermoplastic resin examples include polycarbonate, polymethyl methacrylate, polystyrene, polyacrylonitrile, polyvinyl chloride, polyethylene terephthalate, nylon 6, nylon 66, polyvinyl acetate, polyvinylidene chloride, polypropylene, polyisoprene, polyethylene, polydimethyl. It is preferable to use siloxane, cyclic polyolefin or the like. It is particularly preferable to use polymethyl methacrylate and cyclic polyolefin.
- the resin substrate 10 and the resin substrate 20 may be made of the same material or different materials.
- thermosetting resin for the resin substrate 20 in which the channel groove is not formed, a thermosetting resin or an ultraviolet curable resin may be used in addition to the thermoplastic resin.
- thermosetting resin it is preferable to use polydimethylsiloxane.
- the microchip 1 having the above configuration is formed by heating and bonding the two resin substrates 10 and 20 while pressing.
- a conventionally well-known thing can be used as a heating joining method and joining apparatus in this case.
- an injection mold (hereinafter referred to as a mold) used for injection molding of the resin substrate of the microchip 1 will be described.
- the molding die 2 used for injection molding of the resin substrate 10 will be described, and description of the molding die used for injection molding of the resin substrate 20 will be omitted.
- the resin substrate 20 has a shape in which a through hole 21 is formed on a flat plate, the same configuration as that of a molding die 2 described later for forming the through holes 14 and 18 in the resin substrate 10 is used. It can shape
- FIG. 4 is a side sectional view of the molding die 2
- FIG. 5 is a bottom view of a fixed die 40 described later
- FIG. 6 is a top view of a movable die 50 described later.
- the molding die 2 includes a fixed die 40, a movable die 50, and a pin holding member 60.
- the fixed mold 40 is formed in a substantially flat plate shape that is slightly larger than the resin substrate 10, and the flow path groove 12 is formed on the lower surface 40 a facing the movable mold 50. , 13 and a part of the through-hole 14 is formed.
- the convex portion 41 is formed in a negative shape corresponding to the flow path grooves 12 and 13 and a part of the through hole 14, and more specifically, when viewed from the upper surface of the flow path grooves 12 and 13 and the through hole 14.
- the inverted shape is formed at the same height as the depth of the flow path grooves 12 and 13.
- the fixed mold 40 is formed by applying electroforming to a master mold (not shown).
- the surface of the master mold is nickel, nickel-cobalt alloy, It is formed by depositing a metal such as a nickel-cobalt-phosphorus alloy or copper and then peeling the metal from the master mold.
- the fixed mold 40 is formed of a low hardness or high brittle material such as nickel or copper by the electroforming.
- the movable mold 50 is formed in a substantially flat plate shape that is slightly larger than the resin substrate 10 in the same manner as the fixed mold 40, and the upper surface 50 a facing the fixed mold 40. Further, a negative cavity 51 corresponding to the shape of the resin substrate 10 excluding the flow path grooves 12 and 13 and the through holes 14 and 18 is formed.
- the cavity 51 has negative recesses 52 and 53 corresponding to the protrusions 31 and 32 at positions corresponding to the protrusions 31 and 32.
- Insertion holes 54 and 55 for inserting pins 63 and 64 to be described later are formed on the bottom surfaces of the recesses 52 and 53 with substantially the same diameter as the through holes 14 and 18, and the thickness direction of the movable mold 50 is It is penetrated by.
- a resin injection port 56 for injecting a resin as a molding material into the cavity 51 is formed on the side surface of the movable mold 50.
- the movable mold 50 is formed by electroforming as with the fixed mold 40 described above.
- the pin holding member 60 includes a lid member 61, a base member 62, a plurality of rod-shaped pins 63 and 64, and an elastic member 65.
- the lid member 61 is formed in a substantially flat plate shape having the same shape as the fixed mold 40 and the movable mold 50 when viewed from above.
- recesses 61a and 61b that open downward are formed at positions corresponding to the recesses 52 and 53 of the movable mold 50.
- the bottom surface of the recesses 61a and 61b has a movable mold. Insertion holes 61c and 61d for inserting the pins 63 and 64 are penetrated in the thickness direction at positions corresponding to the 50 insertion holes 54 and 55.
- the base member 62 is formed in a substantially flat plate shape like the lid member 61, and a recess 62 a for accommodating the elastic member 65 (pressing member) is formed on the upper surface.
- the recess 62a is formed over the region below all the recesses 61a and 61b of the lid member 61.
- the recess 62a may have any shape as long as it is formed over the region below all the recesses 61a and 61b.
- the base member 62 is fixed to the lid member 61 in a state where the upper surface of the peripheral portion is in contact with the lower surface of the lid member 61.
- the lid member may be integrated with the movable mold.
- the pins 63 and 64 are for forming the through holes 14 and 18 of the resin substrate 10 and are formed in a stepped cylindrical shape having flanges 63a and 64a at one end, and the flanges 63a and 64a are formed as lid members. While being accommodated in the recesses 61 a and 61 b of 61, it is inserted into the insertion holes 61 c and 61 d of the lid member 61. Further, the pin 64 is formed longer than the pin 63 by the height of the convex portion 41 of the fixed mold 40. The pins 63 and 64 are held in an erected state with the flanges 63a and 64a sandwiched between the lid member 61 and the base member 62 via the elastic member 65.
- the elastic member 65 is a pressing member according to the present invention, is formed in a sheet shape, and is laid over the entire surface of the recess 62 a in the base member 62.
- the elastic member 65 is provided at the base end portion of the pins 63, 64 outside the cavity 51 so as to support all the pins 63, 64, and all the pins 63, 64 are collectively brought together by the elastic force. It is comprised so that it may press toward each front-end
- the elastic member 65 may be any material made of elastomer (resin, rubber), a parallel spring, or a buffer member filled with gas or liquid, and these may be combined. Thereby, the space for pressing each pin 63, 64 is sufficient only for the area of the base end face of the pin 63, 64. Also, unlike the conventional case in which a coil spring is provided at the base end of each pin as an elastic member (pressing member), the number and size of pins that can be pressed are not limited by the size of the coil spring, Even the minute pins 63 and 64 can be surely pressed. Furthermore, by setting the elastic member 65 as described above, the elastic member 65 can be installed in a stable state and can be prevented from being inclined with respect to the mold unlike the conventional coil springs.
- the pins 63 and 64 can be pressed in close contact with the entire base end surfaces of the pins 63 and 64, the plurality of pins 63 and 64 can be pressed uniformly. Thereby, it is possible to effectively suppress the generation of burrs due to partial gaps between the pins 63 and 64 and the fixed mold 40.
- the elastomer includes, for example, fluorine rubber, silicone rubber, fluorosilicone rubber, polyacrylate rubber, ethylene propylene rubber, polyurethane rubber, acrylic elastomer, urethane, styrene thermoplastic elastomer, etc. It is preferable to use fluorinated rubber, silicone rubber, fluorosilicone rubber or the like having a high heat resistance temperature.
- the pressing force applied to the pins 63 and 64 by the elastic member 65 is appropriately adjusted according to the size of the pins 63 and 64 (through holes 14 and 18), the molding material at the time of injection molding, the temperature of the mold, and the like.
- the pressing force is approximately 2 MPa or more.
- the upper limit of the pressing force may be any as long as it can generate a pressing force that does not damage the elastic body 65 itself, the fixed mold 40 and the pins 63 and 64, but is preferably in the range of 2 to 55 MPa. . Further, the pressing force is preferably 2 to 15 MPa.
- the pressing member may be selected from materials of rubber hardness and compression rate that exert a pressing force in such a range.
- the pins 63 and 64 erected on the pin holding member 60 are respectively inserted into the corresponding insertion holes 54 and 55 of the movable mold 50 so that the lower surface of the movable mold 50 and the upper surface of the lid member 61 are brought into contact with each other.
- the movable mold 50 and the pin holding member 60 are fixed in the contacted state.
- the pins 63 and 64 pass through the movable mold 50 and stand upright in the cavity 51 of the movable mold 50, and the portions in the cavity 51 are the through holes 14 and 18 of the resin substrate 10. It becomes a negative shape corresponding to.
- the fixed mold 40 and the movable mold 50 are fastened (clamping).
- the upper surface 50a of the movable mold 50 to which the pin holding member is fixed and the lower surface 40a of the fixed mold 40 are brought into contact with each other with their peripheral edges aligned, and the fixed mold 40 and the movable mold 50 are brought into contact with each other.
- a release agent may be applied to the cavity 51 of the movable mold 50 or the lower surface 40 a of the fixed mold 40.
- the tip portions of the pins 63 and 64 are in contact with the fixed mold 40 in the cavity 51 by the pressing force from the elastic member 65. Specifically, the tip of the pin 63 contacts the lower surface of the convex portion 41 of the fixed mold 40, and the tip of the pin 64 contacts the lower surface 40 a of the fixed mold 40. At this time, the upper surfaces of the flanges 63a and 64a of the pins 63 and 64 and the bottom surfaces of the recesses 61a and 61b of the lid member 61 are not in contact with each other. The fixed mold 40 is surely brought into contact with the fixed mold 40.
- the resin as the molding material is filled. Specifically, the resin heated to a predetermined temperature is injected and filled into the cavity 51 from the resin injection port 56 at a predetermined injection pressure. Then, after a predetermined cooling time, the solidified resin is taken out from the molding die 2 to transfer the shape of the cavity 51 and the like, and the resin substrate 10 in which the through holes 14 and 18 are formed by the pins 63 and 64. Is obtained.
- a heat cycle molding method in which the temperature of at least one of the fixed mold 40 and the movable mold 50 is repeatedly raised and lowered, and a high pressure such as carbon dioxide gas or nitrogen gas following the molding material into the cavity 51.
- the movable die 50 is provided with a plurality of pins 63 and 64 whose tips are brought into contact with the fixed die 40 in the cavity 51 when the mold is clamped.
- the elastic members 65 are provided at the base end portions of the pins 63 and 64 so as to press all the pins 63 and 64 toward the respective distal end portions. 63 and 64 can be pressed simultaneously, and the front-end
- the elastic member 65 is made of an elastomer (resin, rubber), a parallel spring, or a buffer member filled with gas or liquid. Therefore, the space for pressing the pins 63 and 64 is not limited to the pins 63, 64. Only the area of 64 base end faces is sufficient. Thereby, unlike the conventional case where a coil spring is provided as the elastic member (pressing member) at the base end of each pin, even a plurality of minute pins 63 and 64 can be reliably pressed.
- the elastic member 65 can be installed in a stable state and can be prevented from being inclined with respect to the mold unlike the conventional coil springs. Since the pins 63 and 64 can be pressed in close contact with the entire base end surfaces of the pins 63 and 64, the plurality of pins 63 and 64 can be pressed uniformly. Thereby, it is possible to effectively suppress the generation of burrs due to partial gaps between the pins 63 and 64 and the fixed mold 40.
- the pins 63 and 64 are appropriately pressed by the elastic member 65, even the fixed mold 40 formed of a low hardness or high brittle material is damaged by contact with the pins 63 and 64. There is no. Further, even when the mold clamping force and the mold temperature fluctuate, the change in the pressing force due to the fluctuation is absorbed by the elastic deformation of the elastic member 65, and the pins 63 and 64 are surely fixed to the fixed mold. 40.
- the pins 63 and 64 can be reliably brought into contact with the fixed mold 40 by the elastic member 65, it is not necessary to manage the lengths of the pins 63 and 64 with high accuracy. Therefore, the production cost can be reduced and the production can be performed in a short time.
- the microchip 1 having a fine structure is described as an injection-molded product molded using the molding die 2, but such an injection-molded product may be an optical lens or the like. It may have an optical mirror surface, an optical spherical surface, an optical aspherical surface, an optical free curved surface, or may have at least one of these and a fine structure.
- the cavity 51 has been described as being formed in the movable mold 50, but it may be formed between the fixed mold 40 and the movable mold 50.
- the cavity 51 is formed in the fixed mold 40. May be.
- pins 63 and 64 have been described as being provided on the movable mold 50 side by fixing the movable mold 50 and the pin holding member 60, they may be provided on the fixed mold 40 side.
- the elastic member 65 was demonstrated as what presses all the pins 63 and 64, what is necessary is just to press two or more pins 63 and 64, for example, as shown in FIG. It is good also as a structure which presses the said pins 63 and 64 with the some elastic member 65 different for every pins 63 and 64.
- the elastic member 65 may be provided so as to press the pins 63 and 64 through the plate member 66. In this way, the elastic member due to contact with the pins 63 and 64 is provided. 65 damage can be prevented.
- the pins 63 and 64 are not limited to the cylindrical shape, and may be formed in a tapered shape having a smaller diameter toward the tip portion, for example. If it does in this way, mold release of the injection molded product from the pins 63 and 64 can be performed more easily. Further, the pins 63 and 64 may be prismatic.
- each of the microchips 1 made of resin is used by using the molding die 2 provided with the elastic member 65 and the molding die not provided under the following conditions.
- the substrate 10 was injection molded. ⁇ Resin substrate>
- the resin substrate 10 has the following shape.
- the fluororubber used in Examples 1 and 2 is a fluororubber having a product name F201 and a rubber hardness A70 manufactured by NOK Corporation.
- ⁇ Injection molding> A transparent resin material acrylic (Delpet: registered trademark of Asahi Kasei Chemicals Co., Ltd.) was used as a molding material, and injection molding was performed by a heat cycle molding method.
- Resin substrate 10 (Examples 1 and 2) molded with molding die 2 provided with elastic member 65 and resin substrate (comparative example) molded with a molding die not provided with elastic member 65
- the occurrence of burrs was confirmed by observing the openings of the through holes 14 and 18 with a microscope.
- the pin of the comparative example used the pin of the length which has a clearance gap of 5 micrometers or more between a pin front-end
- Microchip (injection molded product) 2 Mold for injection molding (mold for injection molding) 10,20 Resin substrate (injection molded product) 40 fixed mold 50 movable mold 51 cavity 54,55 insertion hole 63,64 pin 65 elastic member (pressing member)
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Abstract
Description
前記固定金型及び前記可動金型のいずれか一方の金型であって、複数の挿嵌孔を有する金型と、型締め時に前記挿嵌孔に挿入され前記キャビティ内で先端部を他方の金型と当接させる棒状の複数のピンと、
前記型締め時に前記複数のピンの基端部側から前記他方の金型側に向けて前記複数のピンを一括して押圧するべく、前記キャビティ外に配置された押圧部材と、
を有することを特徴とする射出成形用金型である。
前記押圧部材は、材質がエラストマー(弾性樹脂やゴムなど)であるか、平行ばね、又は気体若しくは液体が充填された緩衝部材であることが好ましい。ここで、本発明においては、エラストマーという用語は、弾性樹脂やゴムのみならず、一般的には弾性樹脂に分類されなくても本発明で必要とされる押圧力を発揮する樹脂なども包含する広義の用語として用いている。
ヒートサイクル成形法、ガスアシスト成形法及び断熱成形法の少なくとも1つに用いられることが好ましい。
前記押圧部材が前記複数のピンに与える押圧力は、2~55MPaが好ましく、さらに好ましくは2~15MPaである。
前記押圧部材は、前記一方の金型に設けられた複数のピンの基端部の端面を前記他方の金型に向けて押圧するよう配置されたシート状の弾性部材で構成されていることが好ましい。
前記他方の金型は、低硬度又は高脆性の材料で形成されることが好ましい。
本発明の射出成形用金型を用い、
前記キャビティ内に成形材料を充填して当該キャビティの形状を転写させることを特徴とする。
本発明の射出成形用金型を用いて成形され、
光学鏡面、光学球面、光学非球面、光学自由曲面及び微細構造の少なくとも1つを有することを特徴とする。
幅及び深さが10~200μmの範囲内の微細流路を有するマイクロチップ用樹脂成形品であることが好ましい。
<樹脂製基板>
樹脂製基板10は、以下の形状とした。
厚さ :1.5mm
流路用溝12,13の深さ、幅:50μm
貫通孔14,18の内径 :2mm
<弾性部材>
実施例1の弾性部材65として、材質がフッ素ゴム、厚さが2mm、圧縮率50%、ピン63,64への押圧力が40MPaであるものを用いた。また、実施例2の弾性部材65として、材質がフッ素ゴム、厚さが2mm、圧縮率10%、ピン63,64への押圧力が4MPaであるものを用いた。実施例1、2で用いるフッ素ゴムは、具体的には、NOK株式会社製の製品名F201、ゴム硬度A70のフッ素ゴムである。
<射出成形>
成形材料として透明樹脂材料のアクリル(デルペット:旭化成社製 旭化成ケミカルズ株式会社の登録商標)を用い、ヒートサイクル成形法によって射出成形を行った。
<評価>
弾性部材65を設けた成形用金型2で成形した樹脂製基板10(実施例1、2)と、弾性部材65を設けていない成形用金型で成形した樹脂製基板(比較例)とに対し、それぞれ貫通孔14,18の開口部を顕微鏡で観察してバリの発生を確認した。なお、比較例のピンは、金型を締めたときにピン先端と金型の間に5μm以上の隙間があるような長さのピンを使用した。
2 成形用金型(射出成形用金型)
10,20 樹脂製基板(射出成形品)
40 固定金型
50 可動金型
51 キャビティ
54,55 挿嵌孔
63,64 ピン
65 弾性部材(押圧部材)
Claims (10)
- 固定金型と可動金型とを備え、当該固定金型と当該可動金型との間で樹脂が注入されるキャビティを形成する射出成形用金型であって、
前記固定金型及び前記可動金型のいずれか一方の金型であって、複数の挿嵌孔を有する金型と、型締め時に前記挿嵌孔に挿入され前記キャビティ内で先端部を他方の金型と当接させる棒状の複数のピンと、
前記型締め時に前記複数のピンの基端部側から前記他方の金型側に向けて前記複数のピンを一括して押圧するべく、前記キャビティ外に配置された押圧部材と、
を有することを特徴とする射出成形用金型。 - 請求項1に記載の射出成形用金型であって、
前記押圧部材は、材質がエラストマーであるか、平行ばね、又は気体若しくは液体が充填された緩衝部材であることを特徴とする射出成形用金型。 - 請求項1又は2に記載の射出成形用金型であって、
前記押圧部材が前記複数のピンに与える押圧力が、2~55MPaであることを特徴とする射出成形用金型。 - 請求項1又は2に記載の射出成形用金型であって、
前記押圧部材が前記複数のピンに与える押圧力が、2~15MPaであることを特徴とする射出成形用金型。 - 請求項1~4のいずれか一項に記載の射出成形用金型であって、
ヒートサイクル成形法、ガスアシスト成形法及び断熱成形法の少なくとも1つに用いられることを特徴とする射出成形用金型。 - 請求項1~5のいずれか一項に記載の射出成形用金型であって、
前記押圧部材は、前記一方の金型に設けられた複数のピンの基端部の端面を前記他方の金型に向けて押圧するよう配置されたシート状の弾性部材で構成されていることを特徴とする射出成形用金型。 - 請求項1~6のいずれか一項に記載の射出成形用金型であって、
前記他方の金型は、低硬度又は高脆性の材料で形成されることを特徴とする射出成形用金型。 - 請求項1~7のいずれか一項に記載の射出成形用金型を用いる射出成形方法であって、
前記キャビティ内に成形材料を充填して当該キャビティの形状を転写させることを特徴とする射出成形方法。 - 請求項1~7のいずれか一項に記載の射出成形用金型を用いて成形される樹脂製の射出成形品であって、
光学鏡面、光学球面、光学非球面、光学自由曲面及び微細構造の少なくとも1つを有することを特徴とする射出成形品。 - 請求項9に記載の射出成形品であって、
幅及び深さが10~200μmの範囲内の微細流路を有するマイクロチップ用樹脂成形品であることを特徴とする射出成形品。
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| CN201080013258.5A CN102361740B (zh) | 2009-03-27 | 2010-03-01 | 注射模塑成形用模具、注射模塑成形方法和注射模塑成形品 |
| JP2011505940A JP5578169B2 (ja) | 2009-03-27 | 2010-03-01 | 射出成形用金型、射出成形方法及び射出成形品 |
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| JP2009078119 | 2009-03-27 | ||
| JP2009-078119 | 2009-03-27 |
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| WO2010110014A1 true WO2010110014A1 (ja) | 2010-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/JP2010/053224 Ceased WO2010110014A1 (ja) | 2009-03-27 | 2010-03-01 | 射出成形用金型、射出成形方法及び射出成形品 |
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| Country | Link |
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| JP (1) | JP5578169B2 (ja) |
| CN (1) | CN102361740B (ja) |
| TW (1) | TW201102252A (ja) |
| WO (1) | WO2010110014A1 (ja) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012057101A1 (ja) * | 2010-10-29 | 2012-05-03 | コニカミノルタオプト株式会社 | マイクロチップ、マイクロチップの成形型、及びマイクロチップを製造する製造装置 |
| JP5725155B2 (ja) * | 2011-03-17 | 2015-05-27 | コニカミノルタ株式会社 | 射出成形用金型の製造方法、射出成形用金型、射出成形用金型セット、マイクロチップ用基板の製造方法、及びこの金型を用いたマイクロチップ製造方法 |
| JP2017154460A (ja) * | 2016-03-04 | 2017-09-07 | 住友ベークライト株式会社 | 射出成形用金型およびそれを用いた射出成形方法 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6785730B2 (ja) * | 2017-08-01 | 2020-11-18 | Towa株式会社 | 成形装置および樹脂成形品の製造方法 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH025537A (ja) * | 1988-06-24 | 1990-01-10 | Hitachi Ltd | 樹脂封止金型 |
| JP2003251660A (ja) * | 2002-03-05 | 2003-09-09 | Fuji Photo Film Co Ltd | 多孔体の製造方法 |
| JP2004114334A (ja) * | 2002-09-24 | 2004-04-15 | Ono Sangyo Kk | 金型装置および成形方法 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3394516B2 (ja) * | 2000-10-06 | 2003-04-07 | エヌイーシーセミコンダクターズ九州株式会社 | 樹脂封止金型 |
| JP3952084B2 (ja) * | 2005-05-24 | 2007-08-01 | 株式会社村田製作所 | インサートモールド品の製造方法および製造装置 |
| US7722792B2 (en) * | 2007-02-05 | 2010-05-25 | Canon Kabushiki Kaisha | Injection mold and partial compression molding method |
-
2010
- 2010-03-01 WO PCT/JP2010/053224 patent/WO2010110014A1/ja not_active Ceased
- 2010-03-01 CN CN201080013258.5A patent/CN102361740B/zh not_active Expired - Fee Related
- 2010-03-01 JP JP2011505940A patent/JP5578169B2/ja not_active Expired - Fee Related
- 2010-03-24 TW TW99108707A patent/TW201102252A/zh unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH025537A (ja) * | 1988-06-24 | 1990-01-10 | Hitachi Ltd | 樹脂封止金型 |
| JP2003251660A (ja) * | 2002-03-05 | 2003-09-09 | Fuji Photo Film Co Ltd | 多孔体の製造方法 |
| JP2004114334A (ja) * | 2002-09-24 | 2004-04-15 | Ono Sangyo Kk | 金型装置および成形方法 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012057101A1 (ja) * | 2010-10-29 | 2012-05-03 | コニカミノルタオプト株式会社 | マイクロチップ、マイクロチップの成形型、及びマイクロチップを製造する製造装置 |
| US9238322B2 (en) | 2010-10-29 | 2016-01-19 | Wako Pure Chemical Industries, Ltd. | Microchip, molding die for microchip, and manufacturing apparatus for manufacturing microchip |
| JP5725155B2 (ja) * | 2011-03-17 | 2015-05-27 | コニカミノルタ株式会社 | 射出成形用金型の製造方法、射出成形用金型、射出成形用金型セット、マイクロチップ用基板の製造方法、及びこの金型を用いたマイクロチップ製造方法 |
| JP2017154460A (ja) * | 2016-03-04 | 2017-09-07 | 住友ベークライト株式会社 | 射出成形用金型およびそれを用いた射出成形方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201102252A (en) | 2011-01-16 |
| JP5578169B2 (ja) | 2014-08-27 |
| CN102361740A (zh) | 2012-02-22 |
| CN102361740B (zh) | 2015-04-29 |
| JPWO2010110014A1 (ja) | 2012-09-27 |
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