CN107081872B - The fixed structure of mold loose piece and lens mold for forming with the fixed structure - Google Patents

The fixed structure of mold loose piece and lens mold for forming with the fixed structure Download PDF

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Publication number
CN107081872B
CN107081872B CN201710070890.7A CN201710070890A CN107081872B CN 107081872 B CN107081872 B CN 107081872B CN 201710070890 A CN201710070890 A CN 201710070890A CN 107081872 B CN107081872 B CN 107081872B
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CN
China
Prior art keywords
loose piece
mold
spacer member
mentioned
receiving portion
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.)
Expired - Fee Related
Application number
CN201710070890.7A
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Chinese (zh)
Other versions
CN107081872A (en
Inventor
高野雅也
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.)
Nidec Sankyo Dongguan Precision Corp
Nidec Sankyo Corp
Original Assignee
Nippon Electric Three Association (dongguan) Industrial Machinery Co Ltd
Nidec Sankyo Corp
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Publication date
Application filed by Nippon Electric Three Association (dongguan) Industrial Machinery Co Ltd, Nidec Sankyo Corp filed Critical Nippon Electric Three Association (dongguan) Industrial Machinery Co Ltd
Publication of CN107081872A publication Critical patent/CN107081872A/en
Application granted granted Critical
Publication of CN107081872B publication Critical patent/CN107081872B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00Moulds or cores; Details thereof or accessories therefor
    • B29C33/76Cores
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/1742Mounting of moulds; Mould supports
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • B29C45/36Moulds having means for locating or centering cores
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/76Measuring, controlling or regulating
    • B29C45/80Measuring, controlling or regulating of relative position of mould parts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • B29C45/36Moulds having means for locating or centering cores
    • B29C2045/363Moulds having means for locating or centering cores using a movable core or core part
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2011/00Optical elements, e.g. lenses, prisms
    • B29L2011/0016Lenses

Abstract

A kind of fixed structure of mold loose piece and lens mold for forming with the fixed structure, can inhibit the enlargement of mold or the increase of number of components and the positioning accuracy that can improve loose piece.Technical problem is solved by the fixed structure of following mold loose piece and the lens mold for forming with the fixed structure, the fixed structure of above-mentioned mold loose piece has the spacer member that loose piece receiving portion is accommodated in together with loose piece, the position of localized contact of the above-mentioned spacer member configuration in the outer peripheral surface with above-mentioned loose piece, the abutting part of above-mentioned loose piece abutted with above-mentioned spacer member be with from above-mentioned loose piece receiving portion opening side towards bottom surface side and to above-mentioned spacer member side stretch out inclined surface, the abutting part of above-mentioned spacer member abutted with above-mentioned loose piece is the inclined inclined surface of abutting part along above-mentioned loose piece side.

Description

The fixed structure of mold loose piece and lens mold for forming with the fixed structure
Technical field
The present invention relates to the fixed structure of mold loose piece and the lens mold for forming with the fixed structure.
Background technique
A kind of plastic lens molding mold is disclosed in following patent documents 1, have to the outer peripheral surface of loose piece into The wall surface component of the plate of row positioning, the wall surface component are formed to move forward and backward relative to loose piece.In the patent document 1 A kind of structure, the component (hereinafter referred to as " tapered member ") of wedge shape are disclosed in embodiment 2 (0011-0015 sections, Fig. 3-5) The back side of (direction orthogonal with the short transverse at the wall surface component back side) insertion wall surface component in the width direction, it is above-mentioned by making Tapered member is slided along above-mentioned width direction, and wall surface component is made to move forward and backward.A kind of light is disclosed in following patent documents 2 The mold for forming for learning element, is clamped with spacer member between the outer peripheral surface of loose piece and the inner peripheral surface of loose piece receiving portion, on The outer peripheral surface for stating the inner peripheral surface and above-mentioned loose piece of loose piece receiving portion is opposite, inner circumferential of the above-mentioned spacer member to above-mentioned loose piece receiving portion Face is adjusted at a distance from the outer peripheral surface of above-mentioned loose piece.
Patent document 1: Japanese Patent Laid-Open 5-096580 bulletin
Patent document 2: International Publication WO2009/084414 bulletin
In order to improve the formed precision of injection forming mold, need to inhibit to the greatest extent may be used by the tolerance for constituting each part of mold It can be small.It especially in the mold of loose piece mode, needs that loose piece is fixed, to prevent because of the gap for being set to loose piece receiving portion The position of loose piece is caused to generate error.Moreover, along with camera system lens unit in recent years, (vehicle-mounted camera or monitoring are imaged Head etc.) high resolution, plastic lens used in above-mentioned camera system lens unit want in molding mold Seek the mould and die accuracy of μm unit.Only by simply inhibiting the tolerance of each part to be difficult to realize above-mentioned mould and die accuracy.Therefore, it is molded The mold of molding it is preferable that have can the drawer at movable side to zoning lens forming part and affixed side forward surface it is opposite The mechanism that position is finely adjusted.
The mold of above patent document 1 and 2 has the mechanism that can be finely adjusted to the position of the loose piece in loose piece receiving portion, But thread spindle of position adjusting of the loose piece of above-mentioned mold etc. is all prominent from the side of loose piece receiving portion, so that it is small-sized to form its Change or the highly difficult structure of reduction of number of components.Moreover, because the embodiment 2 of patent document 1 is to make tapered member along loose piece The width direction of receiving portion is slided and the structure that is finely adjusted to the position of loose piece, it is therefore desirable to ensure wedge shape in the direction of the width The movable area of component.In addition, above-described embodiment 2 is formed with the length extended along width direction in the side of loose piece receiving portion Hole, the fixed-use bolt stretched out from tapered member are inserted through above-mentioned long hole.It is above-mentioned when the position to tapered member is adjusted Embodiment 2 forms the construction for making the position sliding of the fixed-use bolt in above-mentioned long hole.It is accurate in order to be carried out by the above method Position adjustment, need skilled technical ability.
Summary of the invention
In view of the above problems, the technical problem to be solved in the present invention is to provide a kind of enlargement that can inhibit mold or parts The fixed structure of the mold loose piece of several increases and the positioning accuracy that loose piece can be improved and lens with the fixed structure at Type mold.
In order to solve the above-mentioned technical problem, the fixed structure of mold of the invention loose piece includes loose piece receiving portion, the work Block receiving portion is formed in the die joint of template;Substantially prismatic loose piece, the loose piece are accommodated in above-mentioned loose piece receiving portion;And Spacer member, the spacer member are accommodated in above-mentioned loose piece receiving portion together with above-mentioned loose piece, and above-mentioned loose piece configuration is in above-mentioned work On the opposite direction of the inner peripheral surface of the outer peripheral surface of block and above-mentioned loose piece receiving portion, above-mentioned spacer member configuration with above-mentioned loose piece The position of the localized contact of outer peripheral surface, the abutting part of above-mentioned loose piece abutted with above-mentioned spacer member are received with from above-mentioned loose piece Appearance portion opening side towards bottom surface side and to above-mentioned spacer member side stretch out inclined surface, above-mentioned spacer member with it is upper Stating the abutting part that loose piece abuts is the inclined inclined surface of abutting part along above-mentioned loose piece side.
The abutting part of loose piece and spacer member of the invention is by the inclined inclined surface of depth direction towards loose piece receiving portion It constitutes, and the tilt angle of above-mentioned inclined surface forms following angle: in the depth by spacer member along loose piece receiving portion When direction is pressed, spacer member presses loose piece to the inner peripheral surface of loose piece receiving portion and bottom surface.Such as each above-mentioned patent is not had to as a result, Mold disclosed in document is such, keeps thread spindle of position adjusting of loose piece etc. prominent from the side of loose piece receiving portion, or The movable area of tapered member is arranged in the width direction of loose piece receiving portion, and can be using the depth of loose piece receiving portion by between The region almost the same with the size of spacer member is configured at every component.In addition, by the way that the shape of loose piece is shaped generally as rib Cylindricality rather than it is cylindrical, spacer member can easily catch the side of loose piece, so as to by loose piece always to fixed direction Pressing.Further, since the circumferential position of the loose piece in loose piece receiving portion is fixed in the side or corner by loose piece, therefore The reproducibility of loose piece positioning can be improved.
Furthermore it is preferred that tool, there are two above-mentioned spacer member, each above-mentioned spacer member, which is arranged respectively at, constitutes above-mentioned loose piece Two sides of in each side of outer peripheral surface, in-plane and non-parallel relation.
By pressing from two different directions of not opposite relationship the outer peripheral surface of loose piece, loose piece can be positioned at At the one of loose piece receiving portion.
Furthermore it is preferred that above-mentioned loose piece, in substantially four prism type, each above-mentioned spacer member, which is arranged respectively at, constitutes above-mentioned loose piece Outer peripheral surface each side in, two sides that in-plane is orthogonal.
By being pressed from outer peripheral surface of the orthogonal both direction to the loose piece of substantially four prism type, loose piece can be positioned At the one of loose piece receiving portion.In addition, by the way that loose piece is shaped as the easy general shape of molding, can inhibit to manufacture at This simultaneously improves its form accuracy.
Furthermore it is preferred that in each side of outer peripheral surface for constituting above-mentioned loose piece, in-plane with by above-mentioned spacer member The side of pressing is between side, that is, back side of parallel relation and the inner peripheral surface of the above-mentioned loose piece receiving portion opposite with the above-mentioned back side Clip elastic component.
By clipping elastic structure between the face of the side back side pressed by spacer member and the inner peripheral surface of loose piece receiving portion Part can reduce adhesion when assembling and disassembling loose piece relative to loose piece receiving portion.Moreover, elastic component by its repulsion by loose piece always to Spacer member side force, therefore, is suitably become by the length of the spacer member on the depth direction to loose piece receiving portion More, the position of the loose piece in loose piece receiving portion can be finely adjusted.
Furthermore it is preferred that above-mentioned elastic component is O-ring, the above-mentioned back side is formed with cricoid groove portion, and above-mentioned O-ring is installed on Above-mentioned groove portion.
The O-ring of various specifications generally has circulation on the market, can easily obtain the O-ring with optimal properties.
Furthermore it is preferred that the center that above-mentioned O-ring is configured to above-mentioned O-ring becomes the substantial middle at the above-mentioned back side, will be with The orthogonal direction of short transverse of each side of the outer peripheral surface of above-mentioned loose piece is constituted as each of the outer peripheral surface for constituting above-mentioned loose piece When the width direction of side, the above-mentioned width direction that above-mentioned spacer member configured in the side pressed by the spacer member is substantially Center.
By make loose piece each side width direction on O-ring center it is consistent with the center of spacer member, can prevent Only loose piece inclination when spacer member pressing loose piece.
Furthermore it is preferred that above-mentioned spacer member is made of the hardness steel higher than above-mentioned loose piece.
Spacer member is being formed to the feelings of required minimal size in order to realize the miniaturization of loose piece receiving portion Under condition, it may be easy to be deformed or strain in spacer member.By the way that spacer member is made with the hardness steel higher than loose piece, It can inhibit because assembly and disassembly lead to the deformation or strain of spacer member repeatedly.
Furthermore it is preferred that above-mentioned spacer member is provided with through hole, depth side of the through hole along above-mentioned loose piece receiving portion To extension, above-mentioned spacer member is fixed on above-mentioned loose piece receiving portion, above-mentioned through hole by being inserted through the bolt of above-mentioned through hole Inner peripheral surface be formed with negative thread, the negative thread have the internal diameter bigger than the outer diameter of above-mentioned bolt.
The negative thread of the extraction of fixed bolt hole and the spacer member of spacer member is integrated in a through hole, Thus it is able to achieve the reduction of the installation of the Knock-Down Component of spacer member, the miniaturization of mold and number of components.
In order to solve the above-mentioned technical problem, lens mold for forming of the invention has moving bolster plate or fixed side form Plate, above-mentioned moving bolster plate or fixed bolster plate have the fixed structure of above-mentioned mold loose piece.
Moving bolster plate or fixed bolster plate have the fixed structure of above-mentioned mold loose piece, and thus, it is possible to high position accuracy The loose piece of fixed above-mentioned template.In addition, the case where above-mentioned elastic component is clipped between loose piece and the forward surface of loose piece receiving portion Under, the relative position of the loose piece of the template with another party can be finely adjusted.
In order to solve the above-mentioned technical problem, lens mold for forming of the invention has moving bolster plate and fixed side form Plate, above-mentioned moving bolster plate and fixed bolster plate have the fixed structure of above-mentioned mold loose piece.
Moving bolster plate and fixed bolster plate have the fixed structure of above-mentioned mold loose piece, and thus, it is possible to high position accuracy The loose piece of fixed each template.In addition, above-mentioned by being clipped between the loose piece of either one and the forward surface of loose piece receiving portion Elastic component can be finely adjusted loose piece the relative position of each other.
Invention effect
The fixed structure of mold loose piece according to the present invention and lens mold for forming with the fixed structure, can press down The enlargement of molding jig or the increase of number of components and the positioning accuracy that loose piece can be improved.
Detailed description of the invention
Fig. 1 is the integrally-built schematic diagram for showing the injection moulding machine of the lens mold for forming with embodiment.
Fig. 2 is the plan view for showing the die joint of fixed bolster plate.
Fig. 3 is the plan view for showing the die joint of moving bolster plate.
Fig. 4 is the enlarged drawing for the affixed side loose piece that the chain-dotted line A of Fig. 2 is surrounded.
Fig. 5 is the A-A cross-sectional view of Fig. 4.
Fig. 6 is the side view for showing the engagement state of affixed side loose piece and drawer at movable side loose piece when closing lens mold for forming Cross-sectional view.
(symbol description)
100 fixed side cores
100e die joint
The side 100a, 100b, 100c, 100d
The bottom surface 100f
101,102 core side bearing surface
103,104 groove portion
200 movable side cores
200e die joint
221a lens forming surface
310,320 wedge-shaped spacer
311,321 spacer side bearing surface
313 through holes
313a negative thread
315,325 bolt
410 fixed side core receiving portions
The side 410a, 410b, 410c, 410d
The bottom surface 410e
410f opening
420 movable side core receiving portions
The side 420a, 420b, 420c, 420d
The bottom surface 420e
420f opening
900 injection moulding machines
910 lens mold for forming
913 fixed bolster plates
913a die joint
915 moving bolster plates
915a die joint
916 lens molding room
PL parting line
Specific embodiment
<mould structure summary>
Hereinafter, using attached drawing to the fixed structure of mold loose piece of the invention and the fixed knot with the mold loose piece The embodiment of the lens mold for forming of structure is described in detail.The lens mold for forming 910 of present embodiment is to taking the photograph The plastic lens as used in system lenses unit carries out the example of molding multiple-cavity mold.
Fig. 1 be show the lens mold for forming 910 with present embodiment injection moulding machine 900 it is integrally-built Schematic diagram.Lens mold for forming 910 by its cavity adaptor plate 912 be installed on injection moulding machine 900 fixed disk 921, Core adaptor plate 914 is installed on movable plate 922 and is installed on injection moulding machine 900.Injection moulding machine 900 keeps template i.e. movable Side template 915 and template, that is, fixed bolster plate 913 are opened and closed at parting line PL, to carry out the molding and taking-up of formed body.Note As long as molding machine 900 can execute the molding machine of general injection molding movement, its type is not required.
Fig. 2 is the plan view for showing the die joint 913a of fixed bolster plate 913.On die joint 913a, with die joint It is circumferential centered on the center of 913a to be equally spaced formed with the i.e. fixed side core receiving portion 410 in 12 loose piece receiving portions, Each fixed side core receiving portion 410 is chimeric the loose piece i.e. substantially fixation side core 100 of four prism type.In addition, for the ease of saying It is bright, it is omitted and is constituted used in the mutual positioning of each component, connection or guidance of lens mold for forming 910 etc. in Fig. 2 The record of various pins or pin hole.
In each fixed side core receiving portion 410, aftermentioned spacer member i.e. wedge is contained together with fixed side core 100 Shape spacer 310,320, allocation position of each fixed side core 100 in above-mentioned fixed side core receiving portion 410 pass through wedge shape Spacer 310,320 is fixed.Parting of the forming part 121 of lens forming surface 121a with convex from each fixed side core 100 The center of face 100e is stretched out.
It is formed with fixed side runner halfbody 510 in the die joint 913a of fixed bolster plate 913, the fixation side runner halfbody 510 be the six roots of sensation groove portion extended radially from the running channel 550 for being set to the center die joint 913a towards in-plane.It is each above-mentioned Diverge fork in pairs again after fixed side runner halfbody 510, and extends to the die joint 100e of each fixed side core 100.
Fig. 3 is the plan view for showing the die joint 915a of moving bolster plate 915.With the die joint of fixed bolster plate 913 913a is same, circumferential centered on the center of die joint 915a to be equally spaced formed with 12 on die joint 915a Loose piece receiving portion, that is, movable side core receiving portion 420, each movable side core receiving portion 420 is chimeric loose piece i.e. substantially four prism type Movable side core 200.In addition, same as Fig. 2, also omited in Fig. 3 constitute lens mold for forming 910 each component that The record of various pins or pin hole used in this positioning, connection or guidance etc..
In each movable side core receiving portion 420, wedge-shaped spacer 310,320 is contained together with movable side core 200, It is solid that allocation position of each movable side core 200 in above-mentioned movable side core receiving portion 420 passes through wedge-shaped spacer 310,320 It is fixed.Lens forming part 221 with concave lens forming surface 221a is in the center of the die joint 200e of each movable side core 200 Expose.
It is formed with movable side runner halfbody 520 in the die joint 915a of moving bolster plate 915, the movable side runner halfbody 520 be the six roots of sensation groove portion extended radially from the center of die joint 915a towards in-plane.Each above-mentioned movable side runner half Diverge fork in pairs again after body 520, and extends to the lens forming surface 221a of each movable side core 200.
Each fixed side core 100 and the configuration of each movable side core 200 are in the position with some in another party toward each other It sets, after closing lens mold for forming 910, forms aftermentioned lens molding room 916.In addition, similarly, fixed side runner half Body 510 and movable side runner halfbody 520 are also disposed in position to correspond to each other, by closing 910 shape of lens mold for forming It is guided from running channel 550 to the runner of lens molding room 916 at by molten resin.
<fixed structure of loose piece>
Fig. 4 is the enlarged drawing for the fixation side core 100 that the chain-dotted line A of Fig. 2 is surrounded.Fig. 5 is the A-A cross-sectional view of Fig. 4.With Under, mainly the fixed structure of the fixation side core 100 chimeric with fixed side core receiving portion 410 is illustrated, as follows Each component feature or fixed structure also and with movable side core receiving portion 420 be fitted into movable side core 200 it is identical.
(structure of type core)
Fixed side core 100 is that the corner in the circumferential direction of its outer peripheral surface (side 100a, 100b, 100c, 100d) is chamfered Process and be in the component of substantially four prism type.The fixation side core 100 for being contained in fixed side core receiving portion 410 configures outside it On circumferential surface (side 100a, 100b, the 100c, 100d) direction opposite with the inner peripheral surface of fixed side core receiving portion 410.Affixed side The face position of the die joint 100e of type core 100 is flushed with the die joint 913a of fixed bolster plate 913.
In the side side 100a for being contained in the fixation side core 100 of fixed side core receiving portion 410, with side 100a The position of contact is configured with wedge-shaped spacer 310, in the side side 100b, in the position contacted with side 100b configured with wedge shape Spacer 320.
Core side is formed in the abutting part of the side 100a of fixed side core 100 abutted with wedge-shaped spacer 310 to support Junction 101 (abutting part), the core side bearing surface 101 are from the side opening 410f of fixed side core receiving portion 410 bottom of towards The face side 410e extend out to the inclined surface of wedge-shaped 310 side of spacer.Will be orthogonal with the short transverse of side 100a (Z-direction) Width direction of the direction as side 100a when, the core side bearing surface 101 of present embodiment forms the width side side 100a To overall length 1/3 or so width.In addition, core side bearing surface 101 is formed in a manner of recess, so that the face of side 100a It is cut open.
Similarly, it is also formed in the abutting part of the side 100b of fixed side core 100 abutted with wedge-shaped spacer 320 Core side bearing surface 102 (abutting part), the core side bearing surface 102 are the opening 410f mono- from fixed side core receiving portion 410 Side extend out to the inclined surface of wedge-shaped 320 side of spacer towards the bottom surface side 410e.By with the short transverse of side 100b just When width direction of the direction of friendship as side 100b, core side bearing surface 102 also forms the overall length of side 100b width direction 1/3 or so width, and core side bearing surface 102 is also formed in a manner of recess, so that the face of side 100b is cut open.
In addition, in the outer peripheral surface (side 100a, 100b, 100c, 100d) of fixed side core 100, in-plane with The side 100a pressed by wedge-shaped spacer 310 has the side of parallel relation, that is to say, that the back side, that is, side of 100a in side Face 100c is formed with cricoid groove portion 103.Elastic member, that is, O-ring 181 is installed in groove portion 103.O-ring 181 is clipped in side Between 100c and side 410c, above-mentioned side 410c be in the inner peripheral surface of fixed side core receiving portion 410 with side 100c phase To face.
The center that O-ring 181 is configured to its internal diameter is Chong Die with the substantial middle of side 100c.In addition, wedge-shaped spacer 310 It is also disposed in the position abutted with the center in the width direction of side 100a.This prevents because fixed side core 100 is by wedge The inclination of the fixed side core 100 caused by pressing of shape spacer 310.
Similarly, wedge-shaped spacer 320 is also disposed in the position abutted with the center in the width direction of side 100b.? In-plane has the side of parallel relation with the side 100b pressed by wedge-shaped spacer 320, that is to say, that in side 100b The back side, that is, side 100d be formed with cricoid groove portion 104.Elastic component, that is, O-ring 182 is with its radial center and side The mode of the substantial middle overlapping of 100b is installed on groove portion 104.O-ring 182 is clipped between side 100d and side 410d, above-mentioned Side 410d and side 100d are opposite.
The center that O-ring 182 is similarly configured to its internal diameter is Chong Die with the substantial middle of side 100d.In addition, between wedge shape Spacing body 320 is also disposed in the position abutted with the center in the width direction of side 100b.This prevents because of fixed side core 100 are pressed the inclination of caused fixed side core 100 by wedge-shaped spacer 320.
In addition, fixed side core 100 and fixed side core receiving portion 410 are exposed to corrosive gas when lens form In, therefore, adhesion is easy to produce in its contact surface.In the lens mold for forming 910 of present embodiment, by affixed side Type core 100 and be fixed side core 100 pressing fixation side core receiving portion 410 inner peripheral surface between clamp O-ring 181, 182, adhesion of the fixed side core 100 in assembly and disassembly can be inhibited.
In addition, in the present embodiment, O-ring 181,182 is used in view of being easy to get, but mold of the invention Elastic component used in fixed structure is not limited to the form of O-ring, if identical effect can be obtained, could be used that it His elastic component.
(structure of loose piece receiving portion)
Fixed side core receiving portion 410 is formed at the recess portion of the die joint 913a of fixed bolster plate 913.Fixed side core The inner peripheral surface of receiving portion 410 has side 410a, 410b, 410c, the 410d being made of plane.Each above-mentioned side 410a, 410b, 410c, 410d are formed along the outer peripheral surface (side 100a, 100b, 100c, 100d) of fixed side core 100 for fixed side core The space of 100 chimeric substantially four prism types.
By in each side 410a, 410b, 410c, 410d of fixed side core receiving portion 410 side 410a and side When width direction of the orthogonal direction of the depth direction (Z-direction) of face 410b as above-mentioned each side 410a, 410b, it is bounded on each side face Center in the width direction of 410a, 410b is formed with spacer arrangement portion 411,412, which is The space of the stepped recess in face position of each side 410a, 410b.Each side 410a of the formation of spacer arrangement portion 411,412, 1/3 or so width of the overall length in 410b width direction, and the spacer arrangement portion 411,412 is from fixed side core receiving portion 410 opening 410f extends along depth direction.Spacer arrangement portion 411,412, which is formed, can configure wedge-shaped spacer 310,320 Minimal space.
In addition, when fixing side core receiving portion 410 from the opening 410f unilateral observation of fixed side core receiving portion 410 (that is, when being observed on the direction of visual lines of Fig. 4), each side 410a in the inner peripheral surface to fixed side core receiving portion 410, The corner that 410b, 410c, 410d are attached is formed with extension 410g, and extension 410g expands protrusion with space outward Mode extend.Similarly, extension is also formed in the end of the stretching direction side in spacer arrangement portion 411,412 410h, extension 410h by space expand outward it is outstanding in a manner of extend.The wall surface of above-mentioned extension 410g, 410h and solid Determine to be provided with gap between side core 100 and wedge-shaped spacer 310,320.
(structure of spacer member)
Wedge-shaped spacer 310,320 is the rod member extended along the depth direction of fixed side core receiving portion 410.Wedge Shape spacer 310 is the component of substantially four prism type, supporting in outer peripheral surface with what the side 100a of fixed side core 100 was abutted Socket part, that is, spacer side bearing surface 311 is made of the plane of the inclined at inclination angles along core side bearing surface 101.With spacer Corner of the face of 311 opposite side of side bearing surface in wedge-shaped 310 circumferential direction of spacer is in by the shape of chamfer machining deeper.
Wedge-shaped spacer 310 is provided with through hole 313, the through hole 313 along spacer arrangement portion 411 depth side To extension, bolt 315 of the wedge-shaped spacer 310 by insert in through hole 313 is fixed on spacer arrangement portion 411.
It is formed with negative thread 313a in the inner peripheral surface of through hole 313, negative thread 313a has outer than 315 axle portion of bolt The big internal diameter of diameter.The negative thread 313a collection of the extraction of the fixed bolt hole of wedge-shaped spacer 310 and wedge-shaped spacer 310 In Cheng Yi through hole 313, thus, it is possible to inhibit the increase of number of components.
The materials'use hardness of the fixation side core 100 of present embodiment is the steel of 50-54HRC, wedge-shaped spacer 310 Materials'use have than fixed side core 100 hardness with high hardness steel.In order to realize spacer arrangement portion 411 Miniaturization and in the case that wedge-shaped spacer 310 is formed required minimal size, may be easy to be spaced in wedge shape Part 310 is deformed or strains.In the present embodiment, wedge-shaped spacer 310 utilizes the hardness having than fixed side core 100 The steel of high hardness are made, and thus, it is possible to inhibit because assembly and disassembly lead to the deformation or strain of wedge-shaped spacer 310 repeatedly.
Also have and wedge-shaped spacer 310 using the wedge-shaped spacer 320 that bolt 325 is fixed on spacer arrangement portion 412 Identical shape and structure, the abutting part abutted with side 100b i.e. spacer side bearing surface 321 is similarly by along core side The plane of the inclined at inclination angles of bearing surface 102 is constituted.
(location structure of loose piece)
Abutting part (the spacer side bearing surface of the fixation side core 100 of present embodiment and wedge-shaped spacer 310,320 311 and core side bearing surface 101 and spacer side bearing surface 321 and core side bearing surface 102) by being received towards fixed side core The inclined inclined surface of the depth direction in appearance portion 410 is constituted.Moreover, the tilt angle of above-mentioned inclined surface forms following angle: When wedge-shaped spacer 310,320 is pressed along the depth direction of fixed side core receiving portion 410, wedge-shaped spacer 310,320 Side 410c from fixed side core 100 to fixed side core receiving portion 410, side 410d and bottom surface 410e pressing by.As a result, Even if spacer arrangement portion 411,412 is the small space of the size almost the same with the size of wedge-shaped spacer 310,320, Fixed side core 100 can be located in the one of fixed side core receiving portion 410 using the depth of fixed side core receiving portion 410 Place.
Further, since the shape of fixed side core 100 is not cylindrical but substantially prismatic, therefore wedge-shaped spacer 310,320 side that can easily catch fixed side core 100, so as to which side core 100 will be fixed always to fixed direction Pressing.Further, since by side 410a, 410b, 410c, 410d of fixed side core 100 come to fixed side core receiving portion The circumferential position of 410 fixation side core 100 is fixed, therefore can improve the reproducibility that fixed side core 100 positions.
In addition, in the present embodiment, utilizing the outer peripheral surface (side of 310,320 pairs of wedge-shaped spacer fixed side cores 100 100a, 100b, 100c, 100d) in orthogonal two face (side 100a and 100b) pressed, thus, it is possible to by affixed side type Core 100 is located at the one of fixed side core receiving portion 410, but according to the formed precision required by formed body or can also allow Cost and be configured to only from the direction of either one press.In addition, the fixation side core 100 of present embodiment forms substantially quadrangular Shape, even if being formed, others are prismatic, by two that spacer member is configured to in-plane and non-parallel relation respectively Side can also obtain effect identical with present embodiment.
In the present embodiment, the bolt 315,325 of stationary wedge spacer 310,320d are always fixed to same position. It therefore, is not to adjust bolt when being adjusted by 310,320 pairs of intensity for pressing fixed side core 100 of wedge-shaped spacer 315,325 tightness, but the length (length of Z-direction) of processing wedged spacer 310,320 itself or replacement growth Spend other different wedge-shaped spacers 310.
In addition, being clipped in the O-ring between side 100c, 100d and side 410c, 410d of fixed side core receiving portion 410 181,182 by its repulsion will fixed side core 100 always to wedge-shaped spacer 310,320 sides by going back, above-mentioned side 100c, 100d be by wedge-shaped spacer 310,320 press side 100a, 100b back side face, above-mentioned side 410c, 410d with Above-mentioned side 100c, 100d are opposite.Therefore, the length of wedge-shaped spacer 310,320 is only suitably changed, it can be to positioned at affixed side The position of the fixation side core 100 of type core receiving portion 410 is adjusted.Thus, it is possible to make with high precision fixed side core 100 with can The relative position alignment of dynamic side core 200, so as to remove the bias of lens.In addition, the lens in present embodiment form use In mold 910, above-mentioned location structure is installed on both fixed side core 100 and movable side core 200, but above-mentioned location structure Either can also only be installed in above-mentioned fixed side core 100 and above-mentioned movable side core 200.
<the thickness adjustment structures of lens>
Hereinafter, being illustrated to the thickness adjustment structure of the lens of the lens mold for forming 910 of present embodiment.Fig. 6 Be show close lens mold for forming 910 when fixation side core 100 and the side view of the engagement state of movable side core 200 cut open View.The fixation side core 100 and movable side core 200 of present embodiment have multiple loose piece structure, the multiple loose piece structure The second loose piece 120,220 be embedded in the first loose piece 110,210 respectively.
Fixed side core 100 and movable side core 200 by its lens forming surface 121a, 221a and die joint 913a, 915a forms lens molding room 916.The lens face of the side of the lens forming surface 121a formation lens of fixed side core 100, that is, recessed Face, the lens forming surface 221a of movable side core 200 form lens face, that is, convex surface of the other side of lens.In addition, molding The outer rim of lens forms flange part by die joint 913a, 915a of fixed side core 100 and movable side core 200.By lens at Type can be adjusted with the thickness of the molding lens of mold 910 by keeping the face position of said lens forming surface 121a, 221a mobile. In addition, the shape of lens forming surface 121a, 221a is not limited to present embodiment, can suitably be become according to the shape of molding lens face More (combination of convex-convex lens can be both formed, the combination of concavo-concave lens can also be formed).In addition, can not also be by the shape shape of lens face Be formed as spherical surface aspherical.
Hereinafter, being illustrated referring to thickness adjustment structure of the Fig. 5 to the lens of fixed side core 100.Present embodiment Fixed side core 100 is made of the combination of the first loose piece 110 and the second loose piece 120, above-mentioned second loose piece 120 and the first loose piece 110 is chimeric.First loose piece 110 has the recess portion 111 being fitted into for the second loose piece 120.Recess portion 111 is by the 111a, inner peripheral surface of being open The substantial cylindrical space that 111b and bottom surface 111c is formed.The opening 111a of recess portion 111 is set to fixed side core 100 Bottom surface 100f.In addition, being formed with circular through hole 112 in the center of the bottom surface 111c of recess portion 111.
By the bottom positioned at recess portion 111 in the end face of the second loose piece 120 chimeric with the recess portion 111 of the first loose piece 110 The end face of the face side 111c is as front end face 120a, and by the end with front end face 120a opposite side of above-mentioned second loose piece 120 When face is as rear end face 120b, the front end face 120a of the second loose piece 120 is made of lens forming part 121 and planar portions 122, above-mentioned Lens forming part 121 is the substantial cylindrical protruding portion chimeric with the through hole 112 of recess portion 111, above-mentioned planar portions 122 be with The bottom surface 111c of recess portion 111 opposite plane.It is formed with lens forming surface 121a in the front end of lens forming part 121, this is thoroughly Mirror forming surface 121a is made of hemispherical convex surface.Lens forming part 121 is stretched out from the central verticals of planar portions 122, saturating The base end part of mirror forming part 121 is formed with tapering 121b, and the outer peripheral surface of tapering 121b is tapered expanding.In addition, the second loose piece 120 have substantial cylindrical main part 120c, in the outer surface of main part 120c, along the circumferential in its height of the outer surface Two groove portions 123 are formed on direction (Z-direction) at intervals.In addition, being formed with threaded hole in main part 120c 124, which is provided with opening in the rear end face 120b of the second loose piece 120.Threaded hole 124 is by the second loose piece 120 The hole for screwing togather the tool for being provided with pin thread when extracting from recess portion 111.
Bottom surface 111c and second loose piece of the fixation side core 100 of present embodiment in the recess portion 111 of the first loose piece 110 O-ring 130 is configured between 120 planar portions 122.In addition, each groove portion 123 in the second loose piece 120 is separately installed with O-ring 140。
In addition, the opening edge portion 123a of each groove portion 123 is provided with fillet.That is, being provided in opening edge portion 123a and being in Circular fillet.Such as in the case where the opening edge portion 123a of groove portion 123 is made of sharp keen angle, living relative to first When the recess portion 111 of block 110 assembles and disassembles the second loose piece 120, the distortion of O-ring 140 may be generated or bitten.Present embodiment is consolidated Side core 100 is determined by being set to the fillet of the opening edge portion 123a of groove portion 123, can inhibit such unfavorable condition.
The position of the second loose piece of ratio 120 in the recess portion 111 of the first loose piece 110 close to the opening side 111a of recess portion 111 Set the chimeric ring-like spacer part 151 for having metal annular shape, the rear end face of the ring-like spacer part 151 and the second loose piece 120 120b is abutted.
Bottom surface 111c and second loose piece of the fixation side core 100 of present embodiment in the recess portion 111 of the first loose piece 110 Between 120 planar portions 122 be configured with O-ring 130, as a result, the second loose piece 120 by O-ring 130 repulsion and always by The side opening 111a of recess portion 111 presses.For example, in the case where replacing O-ring 130 and configure metal spacer member, In the position (depth of recess portion 111 for being finely adjusted and changing the lens forming part 121 of the second loose piece 120 for the thickness to lens Spend the position of the second loose piece 120 in direction (Z-direction)) when, it needs that above-mentioned spacer member is processed or replaced every time.And And in the fixation side core 100 of present embodiment, because in addition the side rear end face 120b in the second loose piece 120 is configured with Ring-like spacer part 151, it is therefore desirable to two spacer members be processed or be replaced every time, thus in lens forming part 121 Position needs many working hours in adjusting.The fixation side core 100 of present embodiment has O-ring 130 and ring-like spacer part 151, as a result, when the thickness to lens is finely adjusted, as long as ring-like spacer part 151 is suitably processed or is replaced with thickness difference Spacer.In addition, O-ring 130 is for preventing the bottom surface 111c of recess portion 111 and the planar portions 122 of the second loose piece 120 Adhesion, the service life for extending loose piece also contribute.
In addition, the second loose piece 120 of present embodiment by its main part 120c install two O-rings 140, second When loose piece 120 is assembled and disassembled, the viscous of the contact surface of the recess portion 111 of the first loose piece 110 and the main part 120c of the second loose piece 120 can be inhibited ?.Further, since needing the gap in the setting of recess portion 111 for keeping the second loose piece 120 chimeric, therefore it is embedded in recess portion 111 The position of the second loose piece 120 may generate error corresponding with above-mentioned gap.Second loose piece 120 of present embodiment passes through Two O-rings 140 of its main part 120c are installed on to fill above-mentioned gap, positional shift caused by can preventing because of error.
Inner peripheral surface near the bottom surface 111c of the recess portion 111 of the first loose piece 110 is provided with airport 113, the airport 113 penetrate through from above-mentioned inner peripheral surface to the outside of the first loose piece 110.The O-ring 130 of present embodiment is in its circumferential local setting Jagged portion 130a, O-ring 130 configure on the direction that above-mentioned notch section 130a is connected to airport 113.Make as a result, When two loose pieces 120 are chimeric with recess portion 111, the air in recess portion 111 can escape from airport 113, so as to make the second loose piece 120 More easily it is fitted into.
Movable side core 200 also uses the multiple loose piece structure of fixed side core 100.As shown in fig. 6, above-mentioned affixed side Different in structure of type core 100 and movable side core 200 are only following two points: the second loose piece 220 of movable side core 200 Lens forming part 221, the main part 220c of the second loose piece 220, ring-like spacer part 152 and the recess portion for being set to the first loose piece 210 The diameter of 211 through hole 212 is wider than fixed side core 100, and the lens forming surface 221a of movable side core 200 forms song The recess portion of planar.
The lens mold for forming 910 of present embodiment can inhibit mold by the fixed structure with above-mentioned loose piece The increase of enlargement and number of components, and the positioning accuracy of loose piece can be improved, moreover, being adjusted by the thickness with said lens Structure can easily be finely adjusted the thickness of lens.
Embodiments of the present invention are described in detail above, but the present invention is not limited to above embodiment, it can Various changes are carried out without departing from the scope of the subject in the invention.

Claims (10)

1. a kind of fixed structure of mold loose piece comprising:
Loose piece receiving portion, the loose piece receiving portion are formed in the die joint of template;
Substantially prismatic loose piece, the loose piece are accommodated in the loose piece receiving portion;And
Spacer member, the spacer member are accommodated in the loose piece receiving portion together with the loose piece,
The loose piece configures on the opposite direction of the outer peripheral surface of the loose piece and the inner peripheral surface of the loose piece receiving portion,
The position of localized contact of the spacer member configuration in the outer peripheral surface with the loose piece,
The abutting part of the loose piece abutted with the spacer member is with the opening side direction from the loose piece receiving portion Bottom surface side and to the spacer member side stretch out inclined surface,
The abutting part of the spacer member abutted with the loose piece is the inclined inclination of abutting part along the loose piece side Face.
2. the fixed structure of mold loose piece as described in claim 1, which is characterized in that
The spacer member that there are two tools,
Each spacer member is arranged respectively in each side for constituting the outer peripheral surface of the loose piece, in-plane and non-parallel Two sides of relationship.
3. the fixed structure of mold loose piece as claimed in claim 2, which is characterized in that
The loose piece in substantially four prism type,
Each spacer member is arranged respectively in each side for constituting the outer peripheral surface of the loose piece, in-plane is orthogonal two A side.
4. the fixed structure of mold loose piece as described in claim 1, which is characterized in that in the outer peripheral surface for constituting the loose piece Each side in, in-plane and the side i.e. back side that the side that is pressed by the spacer member is parallel relation and with it is described Elastic component is clipped between the inner peripheral surface of the opposite loose piece receiving portion in the back side.
5. the fixed structure of mold loose piece as claimed in claim 4, which is characterized in that
The elastic component is O-ring,
The back side is formed with cricoid groove portion,
The O-ring is installed on the groove portion.
6. the fixed structure of mold loose piece as claimed in claim 5, which is characterized in that the O-ring is configured to the O shape The center of ring becomes the substantial middle at the back side, by the short transverse of each side with the outer peripheral surface for constituting the loose piece just When width direction of the direction of friendship as each side for the outer peripheral surface for constituting the loose piece, the spacer member configuration is by this Every the substantial middle of the width direction of the side of component pressing.
7. the fixed structure of mold loose piece as described in claim 1, which is characterized in that the spacer member compares institute by hardness The high steel of loose piece are stated to be made.
8. the fixed structure of mold loose piece as described in claim 1, which is characterized in that
The spacer member is provided with through hole, depth direction of the through hole along the loose piece receiving portion extends,
The spacer member is fixed on the loose piece receiving portion by being inserted through the bolt of the through hole,
The inner peripheral surface of the through hole is formed with negative thread, which has the internal diameter bigger than the outer diameter of the bolt.
9. a kind of lens mold for forming, which is characterized in that have moving bolster plate or fixed bolster plate, the moving bolster plate Or fixed bolster plate has the fixed structure of mold loose piece described in any item of the claim 1 to 8.
10. a kind of lens mold for forming, which is characterized in that have moving bolster plate and fixed bolster plate, the movable side form Plate and fixed bolster plate have the fixed structure of mold loose piece described in any item of the claim 1 to 8.
CN201710070890.7A 2016-02-12 2017-02-09 The fixed structure of mold loose piece and lens mold for forming with the fixed structure Expired - Fee Related CN107081872B (en)

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