CN106166822B - Manufacturing process, forming device and the optical component of optical component - Google Patents

Abstract

Manufacturing process, the forming device of a kind of optical component for not making former enlargement, forming period short are provided.The method for forming optical component using the type chamber C of a pair of of mold division by die closing, the type core (40) of the die joint (21,31) of mold is held in by type chamber (C) in die closing direction parting using its part, it is once-forming in parting type chamber (C1, C2), it is carried out in the novel cavity (C3) formed by taking-up type core (40) secondary forming (cascading into shape).All seven processes, forming period by type core insertion → die closing → injection molding → die sinking (taking-up type core) → die closing → injection molding → die sinking (taking out formed products) is short.

Description

Manufacturing process, forming device and the optical component of optical component

Technical field

The present invention relates to the manufacturing process for shaping the optical component for such as projecting convex lens, forming device and by same side The optical component of method forming.

Background technique

In following patent documents 1, disclose the projection such as LED illumination method cascading into shape of convex lens, forming device with And the prior art of the optical component (convex lens) by Same Way forming.

Specifically, patent document 1 describes a kind of rotary multi-deck forming device, can carry out close to departure motion Pair of right and left mold (drawer at movable side with affixed side) opposed die joint on, circumferentially, equally spaced form division type chamber respectively Eight forming faces, and utilize rotary drive mechanism, injection while making movable side mold around horizontal rotation shaft intermittent rotary Forming.

That is, eight forming faces of movable side mold are all formed identical concave spherical surface, and on the other hand, affixed side Eight forming faces of mold are from the first position of convex spherical maximum curvature, with the rotary side (→ the second close to movable side mold Position → the third place ...), the curvature of convex spherical is gradually reduced (with being increased by the type chamber that forming face divides close to rotary side It is thick), and remain in the movable side mold (forming face) of die sinking in the resin layer of respective type chamber forming.

Therefore, by repeating to rotate movable side mold with predetermined angular (such as 45 degree), die closing, injection molding, being opened this A series of movement, as close to rotary side, the number of the intracavitary resin layer of type increases, in the type chamber of last 8 positions, Form the resin convex lens that eight layers of resin layer have been laminated.

Patent document 1:WO 2012/111381 (0030~0034 section, Fig. 1~4)

But in the patent document 1, due to being set to type chamber around pair of right and left mold (drawer at movable side and solid Determine side) horizontal rotation shaft eight at position structure, first, former is big.

Second, in order to shape resin convex lens, multiple (such as eight times) is needed to repeat die closing, injection, pressure maintaining, open Process of mould, the movable side mold of rotation this series is required time until forming device shapes a convex lens, so-called Forming period it is long.

Summary of the invention

The present invention is the project in view of the prior art and the invention carried out, it is intended that providing a kind of do not make into The manufacturing process of shape equipment enlarging and the short optical component of forming period, forming device and by Same Way forming Optical component.

In order to solve the problem, the invention of technical solution 1 is, in the cavity filling to a pair of of mold division by die closing Resin has following process come in the manufacturing process of the optical component shaped:

Once-forming process is held in the type core of the die joint of the mold using its part, by the type chamber in mould The die closing direction parting of tool projects resin to each parting type chamber to shape；

Type core removal process is attached to a side of the mold using the first resin layer as once-forming body, as one The mode for another party that second resin layer of secondary formed body and the type core are attached to the mold is opened, and takes out the type Core；

Secondary forming process, by mold die closing again, to the first, second resin interlayer formed and institute The corresponding novel cavity of volume for stating type core projects resin to shape.

In order to solve the problem, the invention of technical solution 5 is a kind of forming device of optical component, comprising: affixed side Mold；Movable side mold, can be relative to the fixed side mold to close or to leave direction mobile, to a pair of of institute by die closing The type chamber for stating mold division projects resin and shapes,

In the forming device, there is type core, part is held in the die joint of the mold, and by the type chamber In the die closing direction parting of mold, and can dismantle,

Once-forming type chamber is constituted using by a pair of of parting type chamber of the mold and type core division,

After once-forming, a side of the mold is attached to using the first resin layer as once-forming body, as one The mode for another party that second resin layer of secondary formed body and the type core are attached to the mold is opened, and takes out the type core Afterwards, by die closing again, using being formed in the first, second resin interlayer, corresponding novel with the volume of the type core Chamber constitutes secondary forming type chamber.

(effect of the invention of the invention or technical solution 5 of technical solution 1)

In the prior art, it is necessary to which die closing → injection → pressure maintaining (forming) → die sinking → is rotated into this series of work Sequence, repetition number corresponding with the number of the resin layer of stacking, in contrast, in the present invention, although having newly increased " type core Insertion " and " taking-up of type core ", but only by die closing → injection, → pressure maintaining (forming) → is opened this series of process and is repeatedly less than layer The number (once-forming and secondary forming this twice) of the number of folded resin layer, shortens forming period.

For example, to shape consist of three layers be laminated into body (optical component), in the prior art, by die closing → penetrate Out → pressure maintaining (forming) → die sinking → rotates this five processes in triplicate, needs ten five processes in total, in contrast, at this In invention, although increasing " insertion of type core " and " taking-up of type core " two procedures, only need to by die closing → injection → pressure maintaining (at Shape) → be opened this series of process and be repeated twice (once-forming and secondary forming).That is, type core insertion → die closing → is penetrated It is total until out → pressure maintaining (once-forming) → die sinking → type core taking-up → die closing → injection → pressure maintaining (secondary forming) → die sinking Totally ten procedure, so forming period is obviously shortened compared with prior art.

In addition, in the present invention, the forming device of optical component by partially constituting as follows: a pair of of mold, can die closing, open Mould；Type core, at least part are held in the die joint of mold, by type chamber in the die closing direction parting of mold, and can tear open It unloads, therefore the construction of device is succinct and compact.

Particularly, after once-forming, type core exposes in the die joint of the mold of die sinking, so being easy taking-up type core, helps In shortening forming period.

The invention of technical solution 2 will be arranged on the basis of the invention that technical solution 1 is recorded along the die joint of the mold , the slot engaged with the part of the type core uses with resin to the runner that the novel cavity guides as by secondary forming.

The invention of technical solution 6 is arranged on the basis of the invention of the record of technical solution 5 in the die joint of the mold Have the secondary forming runner guided with resin to the novel cavity, the runner is played to be engaged with a part of the type core The effect of slot.

(effect of the invention of the invention or technical solution 6 of technical solution 2)

The part type core for being held on the die joint of mold engages with the slot of the die joint setting along mold, thus type core quilt It is positioned relative to type chamber, so assembling of the type core to mold becomes easy.

In addition, using resin to novel cavity using slot being arranged in mold, engaging with a part of type core as by secondary forming The runner of guidance uses, so the formation of the runner of mold becomes easy and simply.

The invention of technical solution 3 on the basis of the invention that technical solution 2 is recorded, be formed on the type core with it is described The handle of slot engaging, and at least part in the peripheral part of the type core, are formed with the die joint for being held on the mold Flange part,

It is carried out in the state that the die joint of the mold holds at least part of the flange part and the spindle clamp It is once-forming.

The invention of technical solution 4 on the basis of the invention that technical solution 3 is recorded, the die joint of the mold will be described It is carried out in the state of the part clamping at least adjacent to peripheral part of flange part once-forming.

(effect of the invention of technical solution 3,4)

In technical solution 1,2, in type core, a part, that is, handle of type core is held in the die joint of mold, thus by It is held in type chamber along the position of die closing direction parting, but in the intracavitary type core with cantilever-shaped extension of type, due to parting type chamber It projects, the once-forming pressure with resin of filling, and vibrates, is bent, deforms, it is therefore possible to as once-forming body Resin layer is shunk or shape defect.But in technical solution 3,4, type core when once-forming, at least the one of type core At least part of flange part that portions of peripheral edge portion is formed also is held in the die joint of mold, and is fixed and held in by type chamber It is divided into two-part specified position, so inhibiting vibration, bending, deformation, in parting type chamber, there is the forming for imitating mold The face shape in face, without shrinking or a pair of of resin layer as once-forming body of regulation shape of shape defect is shaped.

The invention of technical solution 7, which is characterized in that be the method forming recorded by any one of such as technical solution 1~4 Optical component,

The optical component is made of secondary forming body, and the secondary forming body is the once-forming body of conduct being formerly poured The first, second resin interlayer, by the third resin layer of rear casting formed body cascading into shape.

(effect of the invention of technical solution 7) in addition, in the optical component using the forming of existing method, type is intracavitary The cooling velocity for the resin layer being poured afterwards has very big in the side to connect with mold and the side to connect with the resin layer being first poured It is different, it is possible to be heat-shrinked in the resin layer of rear casting.But in the invention of technical solution 7, the third that is poured after being The first, second resin interlevel layer that resin layer is formerly poured folds integrated construction, and the cooling velocity of third resin layer is with One, (there is no difference) almost the same on the interface of the second resin layer, so not being heat-shrinked in third resin layer.

It is learnt from above explanation, the manufacturing process and forming device of optical component according to the present invention are capable of providing The manufacturing process and forming device for the optical component for not making former enlargement, forming period short.

According to the invention of technical solution 2,6, assembling of the type core to mold is become easy, so forming period further contracts It is short.

In addition, the formation of the runner of mold becomes easy and simply, so the structure of forming device becomes succinct.

According to the invention of technical solution 3,4, in once-forming body, type chamber is divided by type core by effectively fixed be held in Two-part specified position, so not shrinking or a pair of of resin layer as once-forming body of the regulation shape of shape defect It is shaped by parting type chamber.

It according to the invention of technical solution 7, is not heat-shrinked when shaping optical component, so being capable of providing good Optical component.

Detailed description of the invention

Fig. 1 is to indicate that the first embodiment of the present invention projects the cross-sectional view of the summary of the forming device of convex lens.

(a) in Fig. 2 is the main parallax stereogram of type core, is (b) that amplification indicates the side formed in the flange peripheral part of type core The rear perspective view of cast gate formation slot.

Fig. 3 is the main view (figure of face forming face) of movable side mold.

Fig. 4 is the main view (figure of face forming face) of fixed side mold.

Fig. 5 is the main portions longitudinal section view of mold, and (a) is regarded along the main portions vertical profile of the mold of the line A-A of Fig. 3 Scheme, is (b) the main portions longitudinal section view along the mold of the line B-B of Fig. 4.

Fig. 6 be it is once-forming after type core is taken out, the main portions longitudinal section view of the mold of die closing again.

Fig. 7 is the main portions enlarged front view of movable side mold.

Fig. 8 is the main portions amplification longitudinal section view of mold (along the section view of the mold of line VIII-VIII shown in Fig. 7 Figure).

Fig. 9 is the main portions longitudinal section view for indicating the mold of once-forming process.

Figure 10 is the main portions longitudinal section view for indicating the mold of die sinking process.

Figure 11 is the main portions longitudinal section view for indicating the mold of type core removal process.

Figure 12 is the main portions longitudinal section view for indicating the mold of secondary forming process.

Figure 13 indicates the projection convex lens of forming, is the rear perspective view that the projection convex lens of state is taken out from mold.

Figure 14 is the longitudinal section view of same projection convex lens.

Figure 15 is that the main portions amplification of the mold for the forming device that the second embodiment of the present invention projects convex lens is vertical Cross-sectional view (cross-sectional view corresponding with Fig. 8).

Figure 16 is the main portions vertical profile view in the mold of the runner formation groove location of the die joint formation of fixed side mold Scheme (cross-sectional view corresponding with Fig. 5 (b)).

Figure 17 is the longitudinal section view (cross-sectional view corresponding with Figure 14) of the projection convex lens shaped by same forming device.

Figure 18 is that the main portions amplification of the mold for the forming device that the third embodiment of the present invention projects convex lens is vertical Cross-sectional view (cross-sectional view corresponding with Fig. 8).

Figure 19 is the main portions vertical profile view in the mold of the runner formation groove location of the die joint formation of fixed side mold Scheme (cross-sectional view corresponding with Fig. 5 (b)).

Figure 20 is to indicate that the side gate being arranged in the die joint of movable side mold forms the perspective view of slot.

Figure 21 is the longitudinal section view (cross-sectional view corresponding with Figure 14) of the projection convex lens shaped by same forming device.

Figure 22 is the main portions i.e. drawer at movable side of the forming device of the projection convex lens as other embodiments of the invention The main view (figure corresponding with Fig. 3) of mold.

Figure 23 is the main portions i.e. main view of fixed side mold (figure corresponding with Fig. 4) of same forming device.

Figure 24 is the main view of type core unit.

Figure 25 is by the projection convex lens of the forming device forming of the projection convex lens as other embodiments of the invention Main view.

Figure 26 is the right side view of same projection convex lens.

Figure 27 is the horizontal cross (cross-sectional view of the line XXVII-XXVII shown in Figure 25) of same projection convex lens.

Figure 28 is the longitudinal section view (cross-sectional view of the line XXVII-XXVII shown in Figure 25) of same projection convex lens.

Description of symbols

C-type chamber

C1, C2 parting type chamber (once-forming to use type chamber)

C3 novel cavity corresponding with type core volume (secondary forming to use type chamber)

2, the projection convex lens of 2A, 2B, 2C as optical component

2a convex lens main body

2b flange part

The first transparent resin layer and the second transparent resin layer of 2-1,2-2 as once-forming body

2-3 constitutes the third transparent resin layer of secondary forming body together with the first, second transparent resin

10, the forming device of 10A, 10B, 10C convex lens

20,20A, 20C fixed side mold

21, the die joint of 21A, 21C fixed side mold

22, the forming face of 22A fixed side mold

22a, 22a ' concave plane

24,34 as the once-forming runner with resin passage

25,35,35 ', 37 side gate

26 hot flow paths

27 valve gates

30, the movable side mold of 30A, 30C

31, the die joint of the movable side mold of 31A, 31C

32, the forming face of the movable side mold of 32A

The concave spherical surface of 32a forming face central portion

The concave plane of 32b, 32b, 32b ' forming face peripheral part

35a, 41b1,35b side gate form slot

36 as the secondary forming runner with resin passage

The runner that the handle of 36a type core can engage forms slot

40,40A type core

40C type core unit

41 core bodies

The central portion region of 41a core body

The lug area of 41b, 41b ' core body

42 handles

50 are also used as the type core protrudent pin of molded product knock pin

70 die closings, die opening mechanism

60 injection molding machines

Specific embodiment

Fig. 1~Figure 14 indicates the manufacturing process of optical component of the invention and forming device being applied to projection convex lens Manufacturing process and forming device first embodiment.

In Fig. 1, the device 10 for forming projection convex lens mainly consists of the following parts: fixed side mold 20 has Forming face 22；Movable side mold 30, has the forming face 32 opposed with forming face 22, can lean on relative to fixed side mold 20 The direction (being left and right directions in Fig. 1) closely left is mobile；Die closing die opening mechanism 70 keeps movable side mold 30 mobile；Type core 40 (referring to Fig. 2), part of it, that is, handle 42 is held on the die joint 21,31 of the mold 20,30 of die closing, and the opening with forming face 32 Side engaging, is divided into two parts for the type chamber C divided by forming face 22,32, and can dismantle in the parting of die closing direction；Injection molding machine 60, to the parting type chamber by 40 parting of type core, i.e., by forming face 22,32 and type core 40 divide it is once-forming with type chamber C1, C2 (referring to Fig. 5 (a), (b)) supply is once-forming to use resin, and after once-forming process, to passing through taking-up type core 40 Novel cavity formed, corresponding with the volume of type core 40, i.e., it is secondary forming to use tree with type chamber C3 (referring to Fig. 6) supplying secondary forming Rouge.It should be noted that the die closing die opening mechanism 70 of mobile movable side mold 30 is as known in oil hydraulic cylinder mechanism or torque mechanism etc. Driving mechanism constitute.

As shown in Fig. 1,3,4,5, it is provided with from type chamber C in the die joint 21,31 of the mold 20,30 of die closing with radial court Three runners 24,34,36 that radial direction foreign side extends.Runner 24,34 via side gate 25,35 and parting type chamber (once at Shape type chamber) C1, C2 connection, runner 36 is connected to via side gate 37 with novel cavity (secondary forming with type chamber) C3.

In addition, being set side by side in fixed side mold 20 via valve gate 27 and runner 24,34,36 as shown in Fig. 1,4 Three hot flow paths 26 being respectively communicated with, the material (transparent resin) of forming convex lenses 2 (referring to Fig.1 3,14) is from injection molding machine 60 with molten Melt state to supply to respective hot flow path 26.

In addition, as a shown in Figure 6, about making the secondary forming runner 36 guided with resin to secondary forming type chamber C3, It is discussed in greater detail later, slot 36a and fixed side mold 20 is formed by the runner formed in the die joint 31 of movable side mold 30 Die joint 21 is constituted.Also, the runner that the handle 42 (referring to Fig. 2) of type core 40 can engage forms point of slot 36a composition with mold 20 Type face 21 collaborates and the slot of clamp-type core 40 (handle 42) (referring to Fig. 5 (a), (b)).

Hereinafter, illustrating the structure of mold 20,30 and type core 40 based on Fig. 2~8.

The die joint 21 of fixed side mold 20 is provided with forming face 22, the forming face 22 by relative to die joint 21 slightly Micro-pits, front be viewed as circular concave plane 22a and constitute, on the other hand, be set to the die joint of movable side mold 30 31 forming face 32 is made of such as flowering structure: concave spherical surface 32a, be significantly recessed relative to die joint 31, front observation For circle；Concave plane 32b is formed in the open side peripheral part of concave spherical surface 32a, slightly concave relative to die joint 31 Annular shape.Also, the forming face 22,32 of the mold 20,30 of die closing divides the projection convex lens 2 shaped with forming device 10 The type chamber C (referring to Fig.1) of (referring to Fig.1 3,14) corresponding shape.

In addition, as shown in figure 3, the die joint 31 in movable side mold 30 is provided with and is observed from the front as circular forming face 32 form runner formation slot 34a, 36a of the section arc-shaped that slot 35a, 37a extend towards radial direction foreign side via side gate, such as Shown in Fig. 4, it is also equipped with and is observed from the front as circular forming face 22 via side gate in the die joint 21 of fixed side mold 20 The runner formation slot 24a for the section arc-shaped that slot 25a extends towards radial direction foreign side is formed, as shown in Figure 5,6, by by mold 20,30 die closing forms and supplies the once-forming runner 34,36 with resin, shape using runner formation slot 34a, 36a and die joint 21 At the runner 24 for forming slot 24a and 31 supplying secondary forming resin of die joint using runner.In addition, as shown in Figure 3,4, from type The runner 24,34,36 (runner forms slot 24a, 34a, 36a) that chamber C extends towards radial direction foreign side, from type chamber C towards circumferentially 120 degree Radial direction extend.

On the other hand, as shown in Fig. 2, type core 40 is a rodlike handle 42 from the periphery of the core body 41 of disc-shape The structure that portion extends towards radial direction foreign side, using material identical with the material of mold 20,30 is constituted, (heat conductivity is outstanding Metal) it constitutes.

Central portion of the core body 41 in the curvature vertical section arc-shaped smaller than the curvature of the concave spherical surface 32a of forming face 32 The periphery of region 41a is integrally formed the annular flange portion 41b with the matched thickness of depth of circular concave plane 32b, As shown in figure 5, the size (outer diameter) that the type chamber C that can be divided with the forming face 22,32 of the mold 20,30 by die closing engages is formed, And it is configured to type chamber C being divided into two-part shape at substantially equal intervals in die closing direction.

In addition, as shown in Fig. 2, Fig. 5 (a) and Fig. 8, in the outer peripheral edge portion of the annular flange portion 41b of core body 41 Specified position forms slot 35a with the side gate of the setting of die joint 31 in mold 30 and collaborates, runner is made to form slot 34a and parting The side gate of type chamber C2 connection, the at L-shaped extension of shape forms slot 41b1.That is, using type core 40 by under the form of type chamber C parting into When row is once-forming, resin is used via the once-forming of the guidance of valve gate 27 to runner 34, via the side gate by being connected to The side gate 35 that slot 35a, 41b1 are constituted is formed, is projected to parting type chamber C2.

Core body 41 is in the type chamber C by being formed by the mold 20,30 of die closing, when once-forming, with forming face 22, it 32 collaborates to divide parting type chamber C1, C2, and is also the component of novel cavity when setting is secondary forming, the novel cavity It is the novel cavity C3 clipped by first, second resin layer 2-1,2-2 as once-forming body (referring to Fig. 6).Therefore, type core master The central portion region 41a of body 41 constitutes smooth curve form, so as to projected respectively to parting type chamber C1, C2, novel cavity C3 Molten resin, which successfully flows, to be filled.

On the other hand, the handle 42 of type core 40 is formed to form slot with the runner that the die joint 31 along mold 40 is formed The size that 36a engages with not rocking.That is, the cross-sectional shape of handle 42 is consistent with the runner formation cross-sectional shape of slot 36a.

Therefore, when to the 31 mount type core 40 of die joint of mold 30, handle 42 with runner formation slot 36a in a manner of coincideing Installation, thus core body 41 engages with the open side of forming face 32, and in the side that the outer peripheral edge portion of core body 41 is formed Cast gate forms slot 41b1 and the side gate formation slot 35a of the formation of die joint 31 in movable side mold 30 correctly coincide.That is, type The handle 42 of core 40 forms slot 36a with the runner being arranged in die joint 31 and constitutes the forming face 32 relative to structure forming cavity C for type core Main body 41 is in circumferentially positioned positioning mechanism.

In addition, the type core 40 about once-forming process, handle 42 is formed the die joint 21 of slot 36a and mold 20 by runner Clamping, and the circular concave plane 32b and mold of the whole close peripheral part by forming face 32 its annular flange portion 41b 20 die joint 21 clamps, thus the type core 40 of once-forming process by by do not vibrate it is indeformable in a manner of effectively fixed keep (referring to Fig. 8).

Specifically, only its handle 42 is clamped by the die joint 21 that runner forms slot 36a and mold 20 about type core 40, Core body 41 can also be formed as in type chamber C with the structure of cantilever-shaped extension, but due to being projected to parting type chamber C1, C2, Vibrative bending and deforming occurs for the once-forming pressure with resin of filling, core body 41, it is possible to form body as primary Resin layer 2-1,2-2 shrink or shape defect.

However, in the present embodiment, the handle 42 of type core 40 is clamped by the die joint 21 that runner forms slot 36a and mold 20, And the die joint 21 of the whole circular concave plane 32b and mold 20 by mold 30 of the flange part 41b of core body 41 Clamping, so being possible to be reliably suppressed in vibration, bending, deformation that core body 41 occurs when once-forming.It is tied Fruit be formed using parting type chamber C1, C2 do not shrink or shape defect, with imitate forming face 22,32 face shape, A pair of of resin layer 2-1,2-2 of once-forming body as regulation shape (referring to Fig. 9).

In particular, parting type chamber (once-forming to use type chamber) C1, C2 is by the mold 20,30 and type core 40 outstanding by heat transmitting It divides, so the forming face of a side of type chamber is compared with the existing patent document 1 formed by resin layer, to parting type chamber C1, C2 Time until resin layer 2-1,2-2 of filling to cooling and solidifying is short, therefore, contracts in the dwell time of once-forming middle needs It is short, correspondingly make the shortening of the forming period of forming device 10.

In addition, as shown in Figure 7,8, movable side mold 30 forming face 32 close to periphery circular concave plane 32b On, position is provided with the type core protrudent pin 50 that prominent movement can be carried out into parting type chamber C2, type core at circumferential direction at equal intervals eight Protrudent pin 50 is used to stay in mold 30 from the mold of die sinking 30 by the resin layer 2-2 as once-forming body after once-forming, Taking-up type core 40 (referring to Fig.1 1).In addition, type core protrudent pin 50 is also functioned to secondary forming molded product (convex lens 2) from mould The effect of knock pin when tool 30 takes out.

That is, after utilization parting type chamber C1, C2 is once-forming by resin layer 2-1,2-2, when mold 20,30 is opened, As shown in Figure 10, mold 20,30 is separated from die joint 21,31, in fixed side mold 20, in die joint 21 and forming face 22 There are stage portions between (concave plane 22a), also, form runner in die joint 21 and form slot 24a, so as once-forming The resin layer 2-1 of body is kept in the form of being bonded with forming face 22.Especially the surface of core body 41 is by carry out asperities finishing Work is easy to remove from resin layer 2-1,2-2.Specifically, core body 41 and resin layer 2-1,2-2 as once-forming body Adhesive force of the stickiness largely by the vacuum state based on interface is influenced.Also, by by the table of core body 41 Face is roughened, and at the time point that core body 41 will be removed from resin layer 2-1,2-2, air invades interface, thus and resin layer The stickiness of 2-1,2-2 reduce, and core body 41 is simply removed from resin layer 2-1,2-2.

In addition, the surface asperities can also be replaced in order to which core body 41 to be simply peeled away from resin layer 2-1,2-2 Change processing, to core body 41 implement improve relative to resin peel property well known surface treatment (such as formed be fluorinated Object material layer, ceramic layer, metal compound layer etc.), additionally it is possible to the two is combined.

Therefore, in die sinking, resin layer 2-1 is protected in the form of being reliably bonded with the forming face 22 of fixed side mold 20 It holds.On the other hand, in movable side mold 30, the other resin layer 2-2 as once-forming body with forming face 32 to be bonded Form be kept, furthermore core body 41 is also kept in the form of being bonded with resin layer 2-2.

In this way, the forming face 32 of the movable side mold 30 in die sinking, resin layer 2-2 and type core master as once-forming body Body 41 is stacked, and as indicated by the arrows in fig. 8, type core protrudent pin 50 pushes the flange part 41b of core body 41, thus type core master Body 41 separates glibly from resin layer 2-2, relative to the resin layer 2-2 being bonded with forming face 32, the type comprising core body 41 Core 40 is whole to leave direction separation (referring to Fig.1 1) by court.

After Fig. 6 is the 30 taking-up type core 40 of mold after once-forming from die sinking, the mold 20,30 of die closing is main again The longitudinal section view at position.In the inside of the mold 20,30 of die closing, novel cavity corresponding with the volume of type core 40 taken out is formed C3, it is secondary forming with resin via the cast gate 37 of the runner 36 for the die joint 21,31 for being set to mold 20,30, penetrated to type chamber C3 Out.

Next, referring to Fig. 5,6,9~12, to illustrate the process for shaping projection convex lens 2 using forming device 10.

Firstly, the movable side mold 30 being opened relative to fixed side mold 20 die joint 31 specified position by type core 40 installations by movable side mold 30 towards close to the movement of the direction of fixed side mold 20, pass through die closing, form parting type chamber later C1, C2 (referring to Fig. 5 (a), (b)).

Next, as shown in figure 9, protect by parting type chamber C1, C2 while projecting molten resin with the stipulated time Pressure forms the one-pass molding process of resin layer 2-1,2-2 as once-forming body.

It is when carrying out that movable side mold 30 is mobile from fixed side mold 20 towards direction is left next, as shown in Figure 10 When die sinking, the first resin layer 2-1 as once-forming body is kept to be attached at fixed side mold 20, as the of once-forming body Two resin layers and type core 40 are attached at the form of movable side mold 30.Then, as shown in figure 11, driving core protrudent pin 50 (referring to Fig. 7, Fig. 8), only takes out type core 40 from mold 30.

Next, by movable side mold 30 towards the direction movement close with fixed side mold 20, as shown in fig. 6, ought be again When die closing, novel cavity C3 is formed in type chamber C, the novel cavity C3 is by the first, second resin layer 2- as once-forming body 1,2-2 is clamped, and corresponding to the volume of type core 40 (core body 41).

Next, as shown in figure 12, molten resin is projected to novel cavity C3 via runner 36 and shaped secondary Forming process between resin layer 2-1, the 2-2 as once-forming body being formerly poured, is formed the resin layer 2-3 of rear casting Integrated secondary forming body is laminated and projects convex lens 2 (referring to Fig.1 2).

Finally, being driven carrying out movable side mold 30 from fixed side mold 20 towards after leaving the mobile die sinking process in direction Ejector half core protrudent pin 50 (referring to Fig. 7,8), takes out from mold 30 by the projection convex lens 2 as molded product.

Figure 13 indicates the projection convex lens 2 taken out from mold 30.In the periphery of projection convex lens 2, in runner 24,34,36 The rodlike resin molded body 3,4,5 of interior cooling and solidifying is with radiated entend, so in subsequent handling, if by these resins Formed body 3,4,5 is removed, will be made in its root position (branch location of resin molded body 3,4,5 and projection convex lens 2) cutting At defined projection convex lens 2 (referring to Fig.1 4).

The convex lens shaped using the method for existing patent document 1, the cooling speed for the resin layer being just poured after type is intracavitary For degree, it is very different in the side contacted with mold and the side contacted with the resin layer being first poured, it is possible to be poured after The resin layer of note is heat-shrinked.However, the convex lens 2 shaped using the method for the present embodiment, the third resin being poured after being The structure (referring to Fig.1 2) of formation is laminated between first, second resin layer 2-1,2-2 for being formerly poured of layer 2-3, the be poured afterwards The cooling velocity of three resin 2-3 almost the same (indifference) on the interface of first, second resin layer 2-1,2-2, so Three resin layer 2-3 are not heat-shrinked.Therefore, it can not be heat-shrinked according to the method for this implementation of fine qualities Project convex lens 2.

In addition, as shown in figure 14, convex lens 2 is made of convex lens main body 2a, and the convex lens main body 2a is by movable side form Forming face 22 (the concave plane 22a) formation of the forming face (concave spherical surface 32a) and fixed side mold 20 of tool 30, in convex lens The forming face 32 by movable side mold 30 is integrally formed close to the circular concave plane of periphery in the peripheral part of mirror main body 2a The annular flange portion 2b for the defined width that 32b and the die joint of fixed side mold 20 21 shape.

The forming face 22 (concave plane 22a) of fixed side mold 20 is slightly concave relative to die joint 21, so convex The back side of lens 2 forms stage portion 2d as shown in Figure 13,14 between convex lens main body 2a and flange part 2b.In addition, The root position of resin molded body 3, and stage portion 2d are formed with protrusion corresponding with side gate formation slot 25a in the same plane 2e。

But only the region close to central axis L of the convex lens main body 2a unrelated with stage portion 2d is formed as light distribution Region is come using therefore the light distributing function of convex lens 2 does not lose because of stage portion 2d or protrusion 2e.It should be noted that Figure 14 Appended drawing reference D1 indicate convex lens 2 effective light distribution forming region.

In addition, convex lens 2 is by laminated body the first, second, third resin layer 2-1,2-2,2-3 structure as shown in Figure 12,14 At convex lens main body 2a is made of for tri- layers first, second, third resin layer 2-1,2-2,2-3, and flange part 2b is by third resin layer 2-3 single layer is constituted.

The flange part 2b of convex lens 2 is formed by third resin layer 2-3 single layer, is the structure formed by multilayer with flange part 2b It compares, it is low in the crackle at stacking interface or the occurrence risk of removing, the flowing of the flange part 2b resin shaped is smooth, so energy Injection pressure when enough reducing secondary forming.

Next, being had the following effects that according to the manufacturing process and forming device of the present embodiment.

According to existing patent document 1, as shown in Figure 12,14, the convex lens 2 to be formed and be consisted of three layers is laminated, need by Die closing → injection → pressure maintaining (forming) → movable side mold of die sinking → rotation this five processes in triplicate, need in total 15 Process in the present embodiment, only need to be by die closing → injection although increasing " insertion of type core " and " taking-up of type core " two procedures → pressure maintaining (forming) → is opened this series of process and is repeated twice (once-forming and secondary forming).Specifically, into Row type core insertion → die closing → injection → pressure maintaining (once-forming) → die sinking → type core taking-up → die closing → injection → pressure maintaining is (secondary Forming) ten procedure in total until → die sinking, so in the present embodiment, forming period and existing 1 phase of patent document Than being obviously shortened.

In addition, the die closing of multiple type chambers, die sinking all carry out at same time point, so must in existing patent document 1 The opportunity (dwell time) of die sinking must be set, in contrast, in this implementation based on the longest necessary dwell time of multiple type chambers It, can be in the once-forming dwell time different with secondary forming middle setting, so can be by once-forming and two in example The most suitable dwell time is selected in secondary forming, further shortens forming period.

In particular, the forming face of one side of type chamber is the resin layer being first poured in existing patent document 1, it is poured later It needs to spend a degree of time until resin layer is cooling, in contrast, in the present embodiment, parting type chamber is (once-forming With type chamber) C1, C2 are made of the outstanding mold 20,30 of heat transmitting and type core 40, so the resin layer filled to type chamber C1, C2 Time until 2-1,2-2 are cooling shortens compared with existing patent document 1, correspondingly the contracting of once-forming necessary dwell time It is short, thus the further shortage of forming period.

In addition, the forming device 10 of the present embodiment by partially constituting as follows: a pair of of mold 20,30, it can die closing, die sinking； Type core 40, is held in the die joint 21,31 of mold 20,30 as part thereof of handle 42 and flange part 41b, and with forming The open side in face 32 engages, and by type chamber C in the die closing direction parting of mold 20,30, and can dismantle, therefore the construction of device 10 It is succinct and compact.

Next, being based on Figure 15~17, illustrate the second embodiment of the present invention.Figure 15 be the second embodiment of the present invention i.e. The main portions for projecting the mold of the forming device of convex lens amplify longitudinal section view (cross-sectional view corresponding with Fig. 8).Figure 16 be The main portions longitudinal section view that the runner that the die joint of fixed side mold is formed forms the mold of groove location is (corresponding with Fig. 5 (b) Cross-sectional view).Figure 17 is the longitudinal section view (cross-sectional view corresponding with Figure 14) of the projection convex lens shaped by same forming device.

As shown in figure 8, in the forming device 10 of the first embodiment, the thickness of the flange part 41b of core body 41 It is consistent with the depth of concave plane 32b of the forming face 32 for the die joint 31 for being set to movable side mold 30, also, forming face 22 Outer diameter it is consistent with the outer diameter of central portion region 41a of the vertical section arc-shaped of core body 41, the forming face 22, which are viewed as circular concave plane 22a by the front for being set to the die joint 21 of fixed side mold 20, is constituted, when by mold 20, When 30 die closing, (concave is flat by the part forming face 32 of movable side mold 30 for the almost entire surface of the flange part 41b of core body 41 Face 32b) and fixed side mold 20 die joint 21 clamp.

On the other hand, as shown in Figure 15,16, in the forming device 10A of second embodiment, difference is, is set as into The outer diameter of shape face 22A be greater than core body 41 vertical section arc-shaped central portion region 41a outer diameter, it is described at Shape face 22A is viewed as circular concave plane 22a ' by the front for being set to the die joint 21A of fixed side mold 20A and constitutes, when When by mold 20A, 30 die closing, the only region 41b2 of the defined width of the close peripheral part of the flange part 41b of core body 41, By being set to the part forming face 32 (concave plane 32b) of the die joint 31 of movable side mold 30 and point of fixed side mold 20A Type face 21A clamping.

Other structures are identical as the structure of forming device 10 of the first embodiment, by marking identical attached drawing mark Note, the description thereof will be omitted.

As shown in figure 17, the convex lens 2A shaped by the forming device 10A of the second embodiment is by laminated body first, the Two, third resin layer 2-1,2-2,2-3 is constituted, and convex lens main body 2a is by first, second, third resin layer 2-1,2-2,2-3 tri- Layer is constituted, and in contrast, the root side of flange part 2b is made of for two layers of 2-1,2-3 first, third resin layer, and front end side is by third Resin layer 2-3 single layer is constituted.In addition, Figure 17 appended drawing reference D2 indicate convex lens 2A effective light distribution forming region, be greater than by Effectively light distribution forming region D1 possessed by the convex lens 2 of method and device 10 forming of the first embodiment.

The root side of flange part 2b is made of for two layers first, third resin layer, and front end side is by third resin layer 2-3 single layer structure At compared with flange part 2b is by three layers of structure formed (referring to Figure 21), in the crackle at stacking interface or the occurrence risk of removing It accordingly decreases, the flowing of the resin of flange part forming is smooth, so can reduce respectively once-forming and secondary forming When injection pressure.

Next, being based on Figure 18~21, illustrate the third embodiment of the present invention.Figure 18 be the third embodiment of the present invention i.e. Project convex lens forming device mold main portions amplify longitudinal section view (cross-sectional view corresponding with Fig. 8), Figure 19 be The main portions longitudinal section view that the runner that the die joint of fixed side mold is formed forms the mold of groove location is (corresponding with Fig. 5 (b) Cross-sectional view), Figure 20 is to indicate that the side gate being arranged in the die joint of movable side mold forms the perspective view of slot, and Figure 21 is by same The longitudinal section view (cross-sectional view corresponding with Figure 14) of the projection convex lens of forming device forming.

As shown in Fig. 8,15, in the forming device 10,10A of first, second embodiment, the core body of type core 40 The thickness of 41 flange part 41b is consistent with the depth of concave plane 32b of die joint 31 for being set to movable side mold 30, at this In the forming device 10B of 3rd embodiment, as shown in Figure 18,19, first, the flange part 41b ' of the core body 41A of type core 40A Greater than the flange part 41b of the core body 41 of first, second embodiment, and the thickness of flange part 41b ' compares flange part 41b is thin, for example, be formed as the depth for the concave plane 32b for being set to the forming face 32 of the die joint 31 of movable side mold 30 Approximately half of thickness.

Second, the circular concave for being enclosed in the concave spherical surface 32a of the die joint 31A formation of movable side mold 30A is flat Face 32b ' is made of the first concave plane 32b1 and the second concave plane 32b2, and the first concave plane 32b1 is formed and constituted The concave plane 22a ' of the forming face 22A of fixed side mold 20A almost the same outer diameter, on the inside of radial direction, described the The depth and outer diameter that the flange part 41b ' that two concave plane 32b2 form core body 41A can engage, close to radial direction Outside.That is, the platform in the forming face 32A of movable side mold 30A, in the peripheral part concave plane 22a ' with fixed side mold 20A The external corresponding position of rank is formed with the step for separating the first concave plane 32b1 with the second concave plane 32b2 on the outside of it 32b3, the first concave plane 32b1 surround concave spherical surface 32a with concentric circles.

And it is configured to, when by mold 20A, 30A die closing, the only close periphery of the flange part 41b ' of core body 41 The region 41b " of the defined width in portion, part forming face 32A (the second concave plane 32b2) and fixation by movable side mold 30A The die joint 21A of side mold 20A is clamped.

In addition, in the die joint 31A of movable side mold 30A, forming slot with side gate as indicating Figure 18,20 amplifications 35a is collaborated, and being formed, which makes runner form the side gate that slot 34a is connected to parting type chamber C2, L shape extends, forms slot 35b.That is, in benefit When with type core 40A by carrying out once-forming under the form of type chamber C parting, the primary of runner 34 is directed to via valve gate 27 Forming resin forms slot 35a by side gate via connection and side gate forms the side gate 35 ' that slot 35b is constituted, to parting Type chamber C2 is projected.

Other structures, it is identical as the forming device 10 of first, second embodiment, the structure of 10A, by marking phase Same appended drawing reference, the description thereof will be omitted.

As shown in figure 21, the convex lens 2B shaped by the forming device 10B of the 3rd embodiment is by laminated body first, the Two, third resin layer 2-1,2-2,2-3 is constituted, and convex lens main body 2a is by first, second, third resin layer 2-1,2-2,2-3 tri- Layer is constituted, and in contrast, flange part 2b root side is made of for tri- layers first, second, third resin layer 2-1,2-2,2-3, front end Side is made of third resin layer 2-3 single layer.

It should be noted that the appended drawing reference D3 of Figure 21 indicates effective light distribution forming region of convex lens 2B, it is greater than by institute Effectively light distribution forming region D1 possessed by the convex lens 2 that the method and device 10 for stating first embodiment shape.

Figure 22,23,24 indicate other embodiments of the invention, and Figure 22,23 are projection convex lenses as other embodiments Forming device main portions, the main view of movable side mold, fixed side mold, Figure 24 is the type core for same device The main view of unit.

Forming device 10,10A, 10B of the first~3rd embodiment are configured to, convex by one using a pair of of mold Lens 2,2A, 2B forming, the forming device 10C of the embodiment are configured to, using a pair of of mold 20C, 30C, (are implementing multiple It is four in example) it convex lens 2 while shaping.

That is, as shown in Figure 23,22, in the die joint 31C of the die joint 21C of fixed side mold 20C, movable side mold 30C On, respectively with equally spaced opposed mode is arranged that there are four forming faces 22,32 respectively circumferential, also, on die joint 21C It is provided with the runner extended from each forming face 22 towards radial direction foreign side and forms slot 24a, be provided on die joint 31C from each shape Slot 34a is formed towards the runner that radial direction foreign side extends at face 32 and runner forms slot 36a.

Specifically, as shown in figure 22, near the die joint 31C central portion of movable side mold 30C, with fixed side mold The die joint 21C of 20C is collaborated, and forms four runners of the handle 42 (referring to Figure 24) of the cross shape of clamp-type core unit 40C Slot 36a is formed as mutually orthogonal, and each runner forms slot 36a and is connected to respectively with forming face 32 via side gate formation slot 37a.Runner It forms slot 34a and is forming slot 36a relative to runner, formed in 120 degree of direction, each runner forms slot 34a via side gate shape Grooving 35a is connected to forming face 32 respectively.

In addition, as shown in figure 23, in the die joint 21C central portion of fixed side mold 20C, supplying secondary forming resin General valve gate 27 is open to four runners 36 formed between die joint 21C, 31C of mold 20C, 30C respectively, and And 120 degree of circumferential direction of each forming face 22 etc. point of position, the once-forming valve gate 27 with resin is supplied respectively in mould The runner 24,34 formed between die joint 21C, 31C for having 20C, 30C is open.In addition, each forming face formed in die joint 21C 22 form slot 24a with the runner extended towards radial direction foreign side is connected to via side gate formation slot 25a.

Also, be set to the molten resin in the hot flow path 26 of fixed side mold 20C via valve gate 27 respectively to The runner 24,34,36 that die joint 21C, 31C of mold 20C, 30C of die closing are formed supplies.

In addition, as shown in figure 24, by the various chamber C divided by forming face 32,22 towards the type core unit of die closing direction parting 40C is type core 40 (referring to Fig. 2) integration in such a way that each handle 42 becomes cross shape that will be used in the first embodiment Structure, each forming face that each core body 41 of type core unit 40C can respectively with the die joint 31C formation in mold 30C 32 open side engaging, and the handle 42 of the cross shape of type core unit 40C can with die joint 31C formed with cross The runner that shape extends forms slot 36a (referring to Figure 22) engaging.

In addition, as shown in figure 24, the position as defined in the outer peripheral edge portion of the annular flange portion 41b of each core body 41, Slot 35a is formed with the side gate for the die joint 31C for being set to mold 30C to collaborate, and so that runner is formed slot 34a and parting type chamber C2 and is connected It is logical, it is formed and slot 41b1 (referring to Fig. 2,8) is formed with the side gate that L shape extends.That is, using core body 41 by type chamber C parting Form under when carrying out once-forming, the once-forming with resin of runner 34 is directed to via valve gate 27, via passing through The side gate of connection forms the side gate 35 (referring to Fig. 2,8) that slot 35a, 41b1 are constituted, and projects to parting type chamber C2.

Also, by make type core unit 40C relative to the movable side mold 30C of die sinking die joint 31C close to or from Core body 41, handle 42 can be formed slot 35a in each forming face 32, runner and simultaneously install, dismantle to movement by evolution.

It is other identical as the first embodiment, omit its repeat description.

In addition, in the various embodiments, such as shown in the first implementation, runner 24 is by point in fixed side mold 20 The runner that type face 21 is formed forms slot 24a and constitutes, and runner 34,36 is by the runner shape that is formed in the die joint 31 of movable side mold 30 Grooving 34a, 36a are constituted, and runner 24,34,36 can be formed in the either side of the die joint 21,31 of mold 20,30 as slot, It can be formed in the both sides of die joint 21,31 as cross-slot.

In addition, in the various embodiments, about the method for shaping convex lens 2,2A, 2B (referring to Fig.1 4,17,21) And device is illustrated, the convex lens 2,2A, 2B front side be formed as continuous spherical surface, surface side is formed as flat thereafter Face is that front is viewed as circular convex lens, in its entire peripheral part with the circular flange part 2b for forming defined width, is such as schemed Shown in 25~28, by suitably changing the shape of forming face 22,32 in the formation of die joint 21,31 of mold 20,30, runner 24,34,36 position and the shape of type core 40 etc. are capable of forming convex lens 2C, and the front side is formed by the big spherical surface of curvature, Thereafter surface side is formed by the spherical surface for being less than the curvature of front side, is that virtually rectangular contoured cross section convex lens is observed in front, only Side edge part in its left and right forms the flange part 2b of defined width.

Claims (7)

1. a kind of manufacturing process of optical component, the optical component to the type divided by a pair of of mold of die closing is intracavitary by filling out It fills resin and shapes, the manufacturing process of the optical component is characterized in that, comprising:

Once-forming process is held in the type core of the die joint of the mold using a part, by the type chamber in mold Die closing direction parting projects resin to each parting type chamber to shape；

Type core removal process is attached to a side of the mold using the first resin layer as once-forming body, as once at The mode for another party that second resin layer of body and the type core are attached to the mold is opened, and takes out the type core；

Secondary forming process, by mold die closing again, to it is being formed in the first, second resin interlayer, with the type The corresponding novel cavity of the volume of core projects resin to shape.

2. the manufacturing process of optical component as described in claim 1, which is characterized in that

Using slot being arranged along the die joint of the mold, engaging with the part of the type core as by it is secondary forming with resin to The runner of the novel cavity guidance uses.

3. the manufacturing process of optical component as claimed in claim 2, which is characterized in that

The handle engaged with the slot, and at least part in the peripheral part of the type core, shape are formed on the type core At the flange part for having the die joint for being held on the mold,

It is carried out in the state that the die joint of the mold holds at least part of the flange part and the spindle clamp primary Forming.

4. the manufacturing process of optical component as claimed in claim 3, which is characterized in that

It is carried out in the state that the die joint of the mold clamps the part at least adjacent to peripheral part of the flange part primary Forming.

5. a kind of forming device of optical component, comprising: fixed side mold；Movable side mold, can be relative to the affixed side Mold projects resin to the type chamber divided by a pair mold of die closing to shape to close or leave that direction is mobile, described The forming device of optical component is characterized in that,

With type core, part of it is held in the die joint of the mold, and by the type chamber in the die closing direction of mold point Type, and can dismantle,

Once-forming type chamber is constituted using by a pair of of parting type chamber of the mold and type core division,

After once-forming, a side of the mold is attached to using the first resin layer as once-forming body, as once at The mode for another party that second resin layer of body and the type core are attached to the mold is opened, after taking out the type core, By die closing again, novel cavity structure formed in the first, second resin interlayer, corresponding with the volume of the type core is utilized Type chamber is used at secondary forming.

6. the forming device of optical component as claimed in claim 5, which is characterized in that

It is provided in the die joint of the mold by the secondary forming runner guided with resin to the novel cavity, the runner rises The effect of the slot engaged to a part with the type core.

7. a kind of optical component, which is characterized in that

The optical component is the optical component for the method forming recorded by any one of such as Claims 1 to 4,

The optical component is made of secondary forming body, and the secondary forming body is as once-forming body being formerly poured One, the second resin interlayer, by the third resin layer of rear casting formed body cascading into shape.