CN105819671A - Die assembly for molding glass optical element and manufacturing method of glass optical element - Google Patents
Die assembly for molding glass optical element and manufacturing method of glass optical element Download PDFInfo
- Publication number
- CN105819671A CN105819671A CN201610034732.1A CN201610034732A CN105819671A CN 105819671 A CN105819671 A CN 105819671A CN 201610034732 A CN201610034732 A CN 201610034732A CN 105819671 A CN105819671 A CN 105819671A
- Authority
- CN
- China
- Prior art keywords
- mould
- glass
- preform material
- forming
- optical component
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
- C03B11/06—Construction of plunger or mould
Abstract
Disclosed are a die assembly for molding a glass optical element and a manufacturing method of the glass optical element, which enable a glass molding blank to be stably demolded from a molding die, thereby molding the glass optical element with high precision. The die assembly (100) has an upper die (101) (a first molding die) and a lower die (102) (a second molding die), which are configured to be opposite to each other through separation by a glass molding blank (201). The die assembly also has molding faces (101a, 102a) of an optical functional face for transferring a face shape to the glass molding blank (201), and an auxiliary main die body (104) (a third molding die) arranged between the upper die (101) and the lower die (102) and having a molding face (104a). The molding face (104a) transfers the face shape to the glass molding blank (201) to form a peripheral face of a non-optical functional face. The arithmetic average roughness Ra of the molding face (104a) of the auxiliary main die body (104) is no more than 200 nm.
Description
Technical field
The present invention relates to glass optical component mold for forming group and use the manufacture method of glass optical component of this glass optical component mold for forming group.
Background technology
In recent years, the glass optical component such as lens, prism, reflecting mirror is required high performance and multifunction, such as, be known to optical surface shape is set to aspherical shape to the method improving performance.Particularly, at the mass-produced scene of the glass optical component with aspherical shape, have employed the manufacture method that with mould, thermoplastic glass shaping preform material is carried out extrusion forming.
It is not limited to the glass optical component with aspherical shape, as the mass-produced manufacture device towards glass optical component, has and manufacture device as following.
Such as, it is known to the manufacture device of glass optical component as following: the glass shaping preform material being accommodated in glass optical component mold for forming group is transported to successively heating, extrusion forming and each workbench of cooling, thus manufactures desired glass optical component.Glass optical component mold for forming group such as has mold, lower mold, body die and co-host mould.Body die is in the parts of the barrel shape of the surrounding of mold and lower mold, the parts of the barrel shape that co-host mould is between mold and lower mold.
It is known to following method: in such glass optical component mold for forming group, in order to reduce the deviation of forming shape, obtain stable high-precision glass optical component, and the arithmetic average roughness Ra in optical function face is set to more than 0.3nm below 30nm (referring for example to patent documentation 1).
In addition, it is known to following method: in glass optical component mold for forming group, if maximum height roughness Rmax in optical function face is below 100nm (being equivalent to arithmetic average roughness Ra is below 25nm), if maximum height roughness Rmax of non-optical functional surfaces is more than 1600nm below 6300nm (being equivalent to arithmetic average roughness Ra is more than 400nm below 1600nm) (referring for example to patent documentation 2).
[patent documentation 1] Japanese Unexamined Patent Publication 2005-330152 publication
[patent documentation 2] Japanese Unexamined Patent Publication 2001-335330 publication
But, in the non-optical functional surfaces such as the inner peripheral surface at co-host mould, in the case of higher value as maximum height roughness Rmax is above-mentioned more than 1600nm below 6300nm (being equivalent to arithmetic average roughness Ra is more than 400nm below 1600nm), glass shaping preform material reduces with the contact area of co-host mould, and therefore the demoulding in refrigerating work procedure is easily producing than the stage earlier.On the other hand, when once in a while glass shaping preform material being filled into the coarse part of co-host mould, due to the impact of anchor effect, becoming glass shaping preform material and being easily attached to the state of co-host mould.Further, at the position that there occurs stickup, compared with smooth position, it is difficult to the demoulding.
Thus, in the case of higher value as maximum height roughness Rmax is above-mentioned more than 1600nm below 6300nm (being equivalent to arithmetic average roughness Ra is more than 400nm below 1600nm), the demoulding becomes early or latens, and demoulding state is susceptible to change.Particularly, when being in the state that glass shaping preform material is easily attached to co-host mould, produce split at the outer peripheral face of glass optical component, gap, heating are deadlocked etc. problem.
Additionally, due to glass optical component is different according to position for opportunity from the demoulding of co-host mould, at the position of the first demoulding, compared with the position of the rear demoulding, co-host mould shortened with the time of the conduction of heat of glass optical component.Thus, at position and the position of the rear demoulding of the first demoulding, temperature changes.Not only at the outer peripheral face of glass optical component, in being positioned at the regions such as the optical function face of inner side of outer peripheral face, this variations in temperature also produces impact.Therefore, in the optical function face requiring high precision int, produce the deviation of face shape, and astigmatism, coma, the generation increase of distortion.
Summary of the invention
It is an object of the invention to provide and a kind of can mold glass optical component mold for forming group and the manufacture method of glass optical component of glass optical component accurately by making the demoulding between glass shaping preform material and mould stable.
In a mode, glass optical component mold for forming group possesses: the 1st mould and the 2nd mould, they are configured to across glass shaping preform material relative, and have forming surface, and this forming surface is by the optical function face of face shape transfer to described glass shaping preform material；And the 3rd mould, it is configured between described 1st mould and described 2nd mould, and there is forming surface, the forming surface of the 3rd mould is using the outer peripheral face as non-optical functional surfaces of face shape transfer to described glass shaping preform material, and the arithmetic average roughness Ra of the described forming surface of described 3rd mould is Ra 200nm.
In another way, the manufacture method of glass optical component comprises: heating process, and the glass shaping preform material being received glass optical component mold for forming group heats；Extrusion forming operation, carries out extrusion forming to the described glass shaping preform material after heated；And refrigerating work procedure, the described glass shaping preform material going out extrusion forming cools down, described glass optical component mold for forming group possesses: the 1st mould and the 2nd mould, they are configured to across glass shaping preform material relative, and there is forming surface, this forming surface is by the optical function face of face shape transfer to described glass shaping preform material；And the 3rd mould, it is configured between described 1st mould and described 2nd mould, and there is forming surface, the forming surface of the 3rd mould is using the outer peripheral face as non-optical functional surfaces of face shape transfer to described glass shaping preform material, and the arithmetic average roughness Ra of the described forming surface of described 3rd mould is Ra 200nm.
According to described mode, it is possible to mold glass optical component accurately by making the demoulding between glass shaping preform material and the 3rd mould stable.
Accompanying drawing explanation
(a) and (b) of Fig. 1 is the sectional view of the glass optical component mold for forming group illustrating one embodiment of the present invention.
(a) and (b) of Fig. 2 is top view and the A-A sectional view illustrating the co-host mould in one embodiment of the present invention.
(a) and (b) of Fig. 3 is top view and the B-B sectional view of the co-host mould in the variation illustrating one embodiment of the present invention.
Fig. 4 is the figure of the arithmetic average roughness Ra of the forming surface illustrating the co-host mould in one embodiment of the present invention.
Fig. 5 is the explanatory diagram of an example of the grinding of the forming surface for the co-host mould in one embodiment of the present invention is described.
Fig. 6 is the explanatory diagram of an example of the attrition process of the forming surface for the co-host mould in one embodiment of the present invention is described.
Fig. 7 is the in-built front view manufacturing device illustrating the glass optical component in one embodiment of the present invention.
Label declaration
1: the manufacture device of glass optical component；2: forming room；2a: shield；2b: put into side shield；2c: discharge side baffle plate；2d: interior panelling；10: heating station；20: extrusion forming workbench；30: bosher's station；11,21,31: lower table unit；12,22,32: upper table unit；11a, 21a, 31a, 12a, 22a, 32a: temperature control block；11b, 21b, 31b, 12b, 22b, 32b: all thermal parts；13,23,33: pressurization part；40: put into side mounting table；50: discharge side mounting table；100: set of molds (glass optical component mold for forming group)；101: mold；102: lower mold；101a, 102a: forming surface；101b, 102b: end difference；103: body die；104: co-host mould；104a: forming surface；201: glass shaping preform material；202: glass optical component；301: instrument；301a: grinding tool；302: instrument；302a: abutting part；303: grinding agent.
Detailed description of the invention
Glass optical component mold for forming group and the manufacture method of optical element hereinafter, with reference to the accompanying drawings of embodiment of the present invention.
<about glass optical component mold for forming group>
(a) and (b) of Fig. 1 is that the glass optical component mold for forming group illustrating one embodiment of the present invention (below, is referred to as " set of molds " in this manual.) 100 sectional view.
As shown in (a) and (b) of Fig. 1, set of molds 100 possesses mold 101, lower mold 102, body die 103 and co-host mould 104.It addition, mold 101 and lower mold 102 are the 1st mould and an example of the 2nd mould.Additionally, co-host mould 104 is an example of the 3rd mould.
Mold 101 is configured to across glass shaping preform material 201 relative with lower mold 102.Mold 101 and lower mold 102 such as cylindrical form.
Mold 101 defines forming surface 101a of such as spill in bottom surface.Additionally, lower mold 102 defines forming surface 102a of spill at upper surface.These forming surface 101a, 102a are by the optical function face (playing the face of optical characteristics) of the glass optical component 202 (glass shaping preform material 201) shown in (b) of face shape transfer to Fig. 1.It addition, forming surface 101a, 102a are not only by the optical function face of face shape transfer to glass optical component 202, also by face shape transfer to the non-optical functional surfaces being positioned at about.
End difference 101b is defined in the upper end of mold 101.Additionally, also form end difference 102b in the lower end of lower mold 102.
Body die 103 shape cylindrical in shape.Additionally, body die 103 is configured at around mold 101 and lower mold 102 between the end difference 101b and the end difference 102b of lower mold 102 of mold 101.It addition, the outer peripheral face of mold 101 can slide relative to the inner peripheral surface of body die 103.
Such as (a) of the Fig. 2 as top view and as shown in (b) of Fig. 2 of its A-A sectional view, co-host mould 104 (or tubular or define the column of through hole) the most in the form of a ring.Co-host mould 104, at the hollow space of body die 103, is configured between mold 101 and lower mold 102.Help body die 104 can be arranged to one with body die 103.
Co-host mould 104 has forming surface 104a at inner peripheral surface, and forming surface 104a is using the outer peripheral face as non-optical functional surfaces of face shape transfer to glass optical component 202 (glass shaping preform material 201).It addition, the outer peripheral face of glass shaping preform material 201 be in addition to by mold 101 and forming surface 101a of lower mold 102,102a transfer surface shape part beyond part.
As it is shown on figure 3, protecting film 105 (representing with heavy line in Fig. 3) can be formed in forming surface 104a of co-host mould 104.As an example, the material of this protecting film 105 can enumerate noble metal system or the carbon etc. such as platinum, rubidium, iridium, palladium, ruthenium, osmium, gold.It addition, protecting film 105 to be formed as thickness on the whole generally uniform, therefore the surface roughness of forming surface 104a of co-host mould 104 goes out with no small degree shows on protecting film 105.
As shown in Figure 4, the arithmetic average roughness Ra of forming surface 104a of co-host mould 104 is Ra 200nm (being 0.2 [μm] in Fig. 4).It is further preferred that the arithmetic average roughness Ra of forming surface 104a is Ra 60nm.It addition, the average line of the roughness curve when solid line extended along left and right near-the 0.02 of Fig. 4 [μm] is datum length.Though utilize the datum length of the circumference of the datum length of the thickness direction of glass shaping preform material 201 and the glass shaping preform material 201 vertical with this thickness direction which compare, be satisfied by the above-mentioned relation of arithmetic average roughness Ra.
The arithmetic average roughness Ra of forming surface 104a is preferably set to 1nm Ra.Can also be that Ra is less than 1nm, but glass shaping preform material 201 is easily attached to forming surface 104a.Additionally, it is desirable that in mold 101 and forming surface 101a of lower mold 102,102a, by the arithmetic average roughness of the part in the optical function face of face shape transfer to glass optical component 202 below the arithmetic average roughness of forming surface 104a of co-host mould 104 or equal thereto.
In forming surface 104a of co-host mould 104, arithmetic average roughness Ra around glass shaping preform material 201 is distributed as, and the difference Δ Ra of maxima and minima is Δ Ra 50nm.It is further preferred that Δ Ra is Δ Ra 30nm.It addition, all meet the relation of this Δ Ra in the case of following two kinds.1st kind of situation is, compares the roughness during datum length of the roughness during datum length of the thickness direction of glass shaping preform material 201 and the thickness direction of the glass shaping preform material 201 of other position that leaves from the position of this datum length towards the circumference of glass shaping preform material 201.In addition, 2nd kind of situation is, compares the roughness during datum length of the roughness during datum length of the circumference of glass shaping preform material 201 and the circumference of the glass shaping preform material 201 of other position left from the position of this datum length towards the circumference of glass shaping preform material 201.
Additionally, as described later, the swivel feeding direction of forming surface 104a of co-host mould 104 be forming surface 104a (glass shaping preform material 201) circumference in the case of, on the straight-line feed direction (thickness direction of glass shaping preform material 201) vertical with this circumference, above-mentioned Ra and Δ Ra easily increases.Arithmetic average roughness Ra shown in Fig. 4 is the measurement result of the thickness direction of the glass shaping preform material 201 as straight-line feed direction.
Fig. 5 and Fig. 6 is the explanatory diagram of an example of the grinding of forming surface 104a for co-host mould 104 is described and attrition process.
In order to carry out polish in the way of meeting above-mentioned relation by the arithmetic average roughness Ra and Δ Ra of forming surface 104a of co-host mould 104, preferably carry out the grinding shown in Fig. 5.In the example of fig. 5, co-host mould 104 or have the instrument 301 of grinding tool 301a and pivot about (swivel feeding) with the central shaft C11 of co-host mould 104, instrument 301 pivots about with its central shaft C12.Additionally, instrument 301 or co-host mould 104 suitably move (straight-line feed) abreast with central shaft C11, C12.In order to reduce the arithmetic average roughness Ra of forming surface 104a, by selection or the feed speed etc. that slows down of grinding tool, suitably it is adjusted.It addition, before grinding, such as, by machining, suitably carry out the tubular etc. being set to by co-host mould 104 substantially and process.
Additionally, the arithmetic average roughness Ra and Δ Ra of forming surface 104a in order to reduce co-host mould 104, the attrition process shown in Fig. 6 can be carried out after grinding.In the example of fig. 6, co-host mould 104 or have the instrument 302 of abutting part 302a and pivot about (swivel feeding) with the central shaft C21 of co-host mould 104, instrument 302 pivots about with its central shaft C22.Additionally, instrument 302 or co-host mould 104 suitably move (straight-line feed) abreast with central shaft C21, C22.It addition, grinding agent 303 is supplied in forming surface 104a of co-host mould 104.
Owing to being heat-resisting and the face of load resistance, the material of above-mentioned set of molds 100 (mold 101, lower mold 102, body die 103 and co-host mould 104) is such as preferably used superhard alloy, carborundum, rustless steel etc..Additionally, viewpoint based on the release property between durability and glass shaping preform material 201 and mold 101 and lower mold 102, preferably mold 101 and forming surface 101a of lower mold 102,102a are implemented mold membrane coating.Further, in order to improve the release property of forming surface 101a, 102a, it is possible to use physics or the means of chemistry, to forming surface 101a, 102a implement employ releasing agent surface process.Additionally, as glass shaping preform material 201, although a simply example, but known there is L-BSL7 (manufacture of (strain) little Yuan company, vitrifying point 498 DEG C, yield point 549 DEG C) etc..
<about the manufacture method of glass optical component>
First, the example manufacturing device of the glass optical component used in the manufacture method of glass optical component with reference to Fig. 7 explanation.
Fig. 7 is the in-built front view manufacturing device 1 illustrating the glass optical component in one embodiment of the present invention.
The manufacture device 1 of the glass optical component shown in Fig. 7 possesses forming room 2, heating station 10, extrusion forming workbench 20, bosher's station 30, puts into side mounting table 40 and discharge side mounting table 50.
Forming room 2 has shield 2a, puts into side shield 2b, discharge side baffle plate 2c and interior panelling 2d.
Shield 2a is arranged in the inside of forming room 2, separates being configured with the space (preparation room) putting into side mounting table 40 with the space (molding space) being configured with heating station 10, extrusion forming workbench 20, bosher's station 30 and discharge side mounting table 50.
Put into side shield 2b to be controlled as when set of molds 100 being put in forming room 2 being opened.Additionally, discharge side baffle plate 2c is controlled as when set of molds 100 being discharged in forming room 2 being opened.It is airtight that forming room 2 is put into side shield 2b and discharge side baffle plate 2c.
It it is air or by noble gas (Ar gas etc.) or nitrogen (N in forming room 22Deng) displacement.In the case of using noble gas or nitrogen, by not shown pipeline supply gas in forming room 2.
In forming room 2, multiple set of molds 100 are transplanted on the most continuously input side mounting table 40, heating station 10, extrusion forming workbench 20, bosher's station 30, discharge side platform 50.
Heating station 10, extrusion forming workbench 20 and bosher's station 30 have a pair lower table unit 11,21,31 and upper table unit 12,22,32 and pressurization part 13,23,33.
Lower table unit 11,21,31 and upper table unit 12,22,32 are to be oppositely disposed in the way of set of molds 100.
Lower table unit 11,21,31 has temperature control block 11a, 21a, 31a and equal thermal part 11b, 21b, 31b.Equally, upper table unit 12,22,32 also has temperature control block 12a, 22a, 32a and equal thermal part 12b, 22b, 32b.
In temperature control block 11a, 21a, 31a, 12a, 22a, 32a, such as, it is configured with 3 cartridge heaters as an example of heating source.
All thermal part 11b, 21b, 31b, 12b, 22b, 32b are the most plate-shaped or block, be positioned at temperature control block 11a, 21a, 31a, 12a, 22a, 32a by set of molds 100 side.All thermal part 11b, 21b, 31b, 12b, 22b, 32b abut with set of molds 100.
Glass shaping preform material 201 shown in (a) and (b) of the set of molds 100 and Fig. 1 being transported between upper table unit 12,22,32 and lower table unit 11,21,31, by making upper table unit 12,22,32 move up and down, is pressurizeed by pressurization part 13,23,33.
It addition, the base portion of bottom surface that lower table unit 11,21,31 is fixed in forming room 2.Additionally, for the entirety manufacturing device 1 making heat be difficult to be delivered to glass optical component, can sandwiched heat-insulating block or cooling block between lower table unit 11,21,31 and base portion and between upper table unit 12,22,32 and pressurization part 13,23,33.
Additionally, in the manufacture device 1 of glass optical component, in order to prevent overheated or make temperature stabilization, can make, in the circumferential arrangement of above-mentioned base portion and pressurization part 13,23,33, the pipeline that cooling water flows through.Additionally, the device 1 that manufactures of glass optical component is controlled by not shown control portion, the temperature of the action control and lower table unit 11,21,31 and upper table unit 12,22,32 of implementing each several part.
It addition, heating station 10, extrusion forming workbench 20 and bosher's station 30 can be in order to carry out finer control and being finely divided.For example, it is possible to be respectively configured with part or all of multiple heating station 10, extrusion forming workbench 20 and bosher's station 30.Or, the single workbench carrying out heating process and extrusion forming operation and the single workbench being used for extrusion forming operation and refrigerating work procedure can be configured, work number of units is set to two.
Hereinafter, with reference to Fig. 1 and Fig. 7, the manufacture method of the optical element of present embodiment is illustrated.
Utilize set of molds 100 and manufactured the operation of glass optical component 202 by glass shaping preform material 201 and take the assembling procedure of set of molds 100, heating process, extrusion forming operation, refrigerating work procedure and the flow process of decomposition process.Generally, assembling procedure and the decomposition process of set of molds 100 is implemented the outside of device 1 that manufacture of glass optical component.In the manufacture device 1 of glass optical component, implement heating process, extrusion forming operation, refrigerating work procedure successively.
<assembling procedure>
First the assembling procedure of set of molds 100 is described.
As shown in (a) of Fig. 1, when the upper surface of lower mold 102 is placed with co-host mould 104, the hollow space of co-host mould 104 put into by glass shaping preform material 201 by such as ball shape, and is placed in forming surface 102a of lower mold 102.In this condition, around lower mold 102 and co-host mould 104, it is fitted together to body die 103, and then it is relative with the glass shaping preform material 201 in lower mold 102 that mold 101 is configured to its forming surface 101a.
So, by being sandwiched glass shaping preform material 201 by the mold 101 reciprocally inserted in body die 103 and lower mold 102, the assembling of set of molds 100 is completed.Then, the set of molds 100 being assembled into is configured to the input side manufacturing device 1 of glass optical component, and puts into successively in forming room 2 when opening input side shield 2b.
<heating process>
Then, the heating process heating glass shaping preform material 201 is described.
In forming room 2, before set of molds 100 is transplanted on the molding space being configured with extrusion forming workbench 20 grade, in being configured with the space (preparation room) putting into side mounting table 40, with the inside of nitrogen displacement set of molds 100.
Then, set of molds 100 being transplanted on the stage before heating station 10, the interior panelling 2d of shield 2a opens, the stage after transfer terminates, and interior panelling 2d closes.
Set of molds 100 is transplanted on the lower table unit 11 of heating station 10 from putting into side mounting table 40 by transfer robot.Then, the upper table unit 12 of heating station 10 is declined by the driving of pressurization part 13.
Set of molds 100 is kept with the state clipped by lower table unit 11 and upper table unit 12.
The glass shaping preform material 201 that set of molds 100 shown in (a) of Fig. 1 and this set of molds 100 are received is via lower table unit 11 and upper table unit 12, in the way of reaching the forming temperature corresponding with glass shaping preform material 201, the heated stipulated time.It addition, this forming temperature is set to the temperature that the yield point temperature of glass that used than glass shaping preform material 201 is high.Thus, under forming temperature, glass shaping preform material 201 is soft state.After above-mentioned heating process terminates, upper table unit 12 is driven up by pressurization part 13.
<extrusion forming operation>
Then, illustrate the optical element blank 201 after heating is carried out the extrusion forming operation of extrusion forming.
Set of molds 100 is transplanted on the lower table unit 21 of extrusion forming workbench 20 by transfer robot from the lower table unit 11 of heating station 10.Then, the upper table unit 22 of extrusion forming workbench 20 is declined by the driving of pressurization part 23.
Set of molds 100 shown in (a) of Fig. 1 is when being maintained at forming temperature, pressurized between lower table unit 21 and upper table unit 22.
As shown in (b) of Fig. 1, in set of molds 100, the glass shaping preform material 201 clamped by mold 101 and lower mold 102, while deformation, fills up the spatial portion surrounded by mold 101, lower mold 102 and co-host mould 104.
If in the stage of the intended shape having been obtained glass optical component 202 by the glass shaping preform material 201 of ball shape, stop the pressurization of upper table unit 22, then extrusion forming completes.
Additionally, when set of molds 100 being pressurizeed between lower table unit 21 and upper table unit 22 as described above to obtain the intended shape of glass optical component 202, the amount of movement of upper table unit 22 can be controlled, it is also possible to set plus-pressure and be controlled pressing time.After above-mentioned extrusion forming operation terminates, upper table unit 22 is driven up by pressurization part 23.
<refrigerating work procedure>
Then, the refrigerating work procedure that the glass shaping preform material 201 obtaining extrusion forming cools down is described.
Set of molds 100 is transplanted on the lower table unit 31 of bosher's station 30 by transfer robot from the lower table unit 21 of extrusion forming workbench 20.Then, the upper table unit 32 of bosher's station 30 is declined by the driving of pressurization part 33.
The temperature of lower table unit 31 and upper table unit 32 is controlled block 31a, 32a by said temperature and is maintained at the temperature that can cool down set of molds 100 and glass shaping preform material 201.Generally, chilling temperature is set to the temperature lower than the vitrifying point of glass shaping preform material 201.
Set of molds 100 is kept with the state clipped by lower table unit 31 and upper table unit 32, is cooled to chilling temperature simultaneously.In refrigerating work procedure, in order to make the glass shaping preform material 201 of soft state before fully solidification, not from mold 101 and lower mold 102 demoulding, apply cooling pressure and keep pressure.Particularly, in order to control demoulding opportunity, effectively take following methods: increase cooling pressure, drastically reduced pressure before will being transported to adjacent axle.
When cooling, in order to ensure the transfer printing precision of the glass optical component 202 molded, sometimes also need to pressurized state.Do not break up it addition, plus-pressure during this cooling is set in the glass optical component 202 as products formed or splits thus produce in the extent and scope of damage.
In refrigerating work procedure, glass shaping preform material 201 transfers to solid state from soft state, thus the dimensionally stable of glass optical component 202.
After cooling set of molds 100 and glass shaping preform material 201, upper table unit 32 is driven up by pressurization part 33.
Set of molds 100 is transplanted on discharge side mounting table 50 from the lower table unit 31 of bosher's station 30 by transfer robot.Then, set of molds 100 waits in discharge side mounting table 50, and sufficiently cooled.In above-mentioned refrigerating work procedure, glass shaping preform material 201 shrinks, thus from co-host mould 104 demoulding such as grade of set of molds 100.
<decomposition process>
Then, illustrate to decompose set of molds 100 thus the decomposition process of glass optical component 202 manufactured by taking out.
Set of molds 100, when opening discharge side baffle plate 2c, is discharged to the outside of forming room 2 from discharge side mounting table 50.Then, set of molds 100 is decomposed with the step contrary with assembling procedure.The glass optical component 202 molded can be obtained from the set of molds 100 after decomposing.
By repeatedly above operation, it is possible to cyclically implement make use of the manufacture of the glass optical component of set of molds 100.If multiple set of molds 100 being put into forming room 2 continuously use, then can improve the molding number of the glass optical component 202 of time per unit.
It addition, in the present embodiment, illustrate to make the manufacture method of the glass optical component 202 that set of molds 100 is recycled to each workbench 10,20,30.But, single workbench secure mold 101 and lower mold 102 the most respectively in the case of, such mold 101, lower mold 102 and the co-host mould 104 that is arranged between which on such as mold 101 are as set of molds 100 function.
In present embodiment discussed above, set of molds 100 possesses: be configured to relative mold 101 and lower mold 102 (the 1st mould and an example of the 2nd mould) across glass shaping preform material 201；And the co-host mould 104 (example of the 3rd mould) being arranged between mold 101 and lower mold 102.Mold 101 and lower mold 102 have forming surface 101a in optical function face of face shape transfer to glass shaping preform material 201,101b.Additionally, co-host mould 104 has forming surface 104a, forming surface 104a is using the outer peripheral face as non-optical functional surfaces of face shape transfer to glass shaping preform material 201.The arithmetic average roughness Ra of forming surface 104a of this co-host mould 104 is Ra 200nm (more preferably Ra 60nm).
Understand by rule of thumb, by so making arithmetic average roughness Ra meet above-mentioned relation, it is possible to fully the demoulding between forming surface 104a and the glass shaping preform material 201 of suppression co-host mould 104 accelerates or slack-off etc., the change of demoulding state occurs.Thereby, it is possible to prevent from splitting at the outer peripheral face of glass optical component 202, gap, heating deadlocked etc..And then, can be according to each position of the outer peripheral face of glass optical component 202, suppression occurs with the deviation on demoulding opportunity of co-host mould 104, and can suppress variations in temperature according to each position of the outer peripheral face of glass optical component 202 thus suppress the generation of Temperature Distribution.Therefore, not only at the outer peripheral face of glass optical component 202, in the regions such as optical function face on its inside, it is also possible to prevent the deviation of face shape from producing, and prevent astigmatism, coma, the generation of distortion from increasing.
Therefore, according to present embodiment, it is possible to mold glass optical component 202 accurately by making the demoulding between glass shaping preform material 201 and co-host mould 104 stable.
In addition, in the present embodiment, in forming surface 104a of co-host mould 104, arithmetic average roughness Ra around glass shaping preform material 201 is distributed as, and the difference Δ Ra of maxima and minima is Δ Ra 50nm (more preferably Δ Ra 30nm).Understand by rule of thumb, by making difference Δ Ra meet such relation, it is possible to around glass shaping preform material 201, the change of suppression demoulding state occurs more fully.Therefore, it is possible to more precisely mold glass optical component 202.
Additionally, in the present embodiment, protecting film 105 is formed at forming surface 104a of co-host mould 104.Therefore, it is particular enable to prevent the deterioration of the co-host mould 104 under the high temperature of heating process and extrusion forming operation etc..Thereby, it is possible to prevent the increase of the arithmetic average roughness Ra caused owing to forming surface 104a of co-host mould 104 deteriorates, and the change being prevented from demoulding state occurs.
Claims (4)
1. a glass optical component mold for forming group, it possesses:
1st mould and the 2nd mould, they are configured to across glass shaping preform material relative, and have forming surface, and this forming surface is by the optical function face of face shape transfer to described glass shaping preform material；And
3rd mould, it is configured between described 1st mould and described 2nd mould, and has forming surface, the forming surface of the 3rd mould using the outer peripheral face as non-optical functional surfaces of face shape transfer to described glass shaping preform material,
The arithmetic average roughness Ra of the described forming surface of described 3rd mould is Ra 200nm.
Glass optical component mold for forming group the most according to claim 1, wherein,
In the described forming surface of described 3rd mould, arithmetic average roughness Ra around described glass shaping preform material is distributed as, and the difference Δ Ra of maxima and minima is Δ Ra 50nm.
Glass optical component mold for forming group the most according to claim 1 and 2, wherein,
Described glass optical component mold for forming group is also equipped with being formed at the protecting film of the described forming surface of described 3rd mould.
4. a manufacture method for glass optical component, it comprises:
Heating process, the glass shaping preform material being received glass optical component mold for forming group heats；
Extrusion forming operation, carries out extrusion forming to the described glass shaping preform material after heated；And
Refrigerating work procedure, the described glass shaping preform material going out extrusion forming cools down,
Described glass optical component mold for forming group possesses:
1st mould and the 2nd mould, they are configured to across described glass shaping preform material relative, and have forming surface, and this forming surface is by the optical function face of face shape transfer to described glass shaping preform material；And
3rd mould, it is configured between described 1st mould and described 2nd mould, and has forming surface, the forming surface of the 3rd mould using the outer peripheral face as non-optical functional surfaces of face shape transfer to described glass shaping preform material,
The arithmetic average roughness Ra of the described forming surface of described 3rd mould is Ra 200nm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-012571 | 2015-01-26 | ||
| JP2015012571A JP2016138008A (en) | 2015-01-26 | 2015-01-26 | Set for molding glass optical element, and manufacturing method of glass optical element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105819671A true CN105819671A (en) | 2016-08-03 |
Family
ID=56559831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610034732.1A Pending CN105819671A (en) | 2015-01-26 | 2016-01-19 | Die assembly for molding glass optical element and manufacturing method of glass optical element |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2016138008A (en) |
| CN (1) | CN105819671A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108002689A (en) * | 2016-10-31 | 2018-05-08 | 正达国际光电股份有限公司 | Molding die and molding method |
| CN111484235A (en) * | 2019-01-25 | 2020-08-04 | 香港理工大学深圳研究院 | Monitoring device and method for demolding of glass mold |
| CN111886649A (en) * | 2018-03-30 | 2020-11-03 | Hoya株式会社 | Plate material for annealing treatment, method for producing plate material for annealing treatment, and method for producing substrate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070098459A1 (en) * | 2005-11-01 | 2007-05-03 | Canon Kabushiki Kaisha | Image forming apparatus |
| JP2010100499A (en) * | 2008-10-27 | 2010-05-06 | Konica Minolta Opto Inc | Molding mold and method of manufacturing glass molded body |
| CN103260800A (en) * | 2011-12-19 | 2013-08-21 | 柯尼卡美能达株式会社 | Die manufacturing method |
-
2015
- 2015-01-26 JP JP2015012571A patent/JP2016138008A/en active Pending
-
2016
- 2016-01-19 CN CN201610034732.1A patent/CN105819671A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070098459A1 (en) * | 2005-11-01 | 2007-05-03 | Canon Kabushiki Kaisha | Image forming apparatus |
| JP2010100499A (en) * | 2008-10-27 | 2010-05-06 | Konica Minolta Opto Inc | Molding mold and method of manufacturing glass molded body |
| CN103260800A (en) * | 2011-12-19 | 2013-08-21 | 柯尼卡美能达株式会社 | Die manufacturing method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108002689A (en) * | 2016-10-31 | 2018-05-08 | 正达国际光电股份有限公司 | Molding die and molding method |
| CN111886649A (en) * | 2018-03-30 | 2020-11-03 | Hoya株式会社 | Plate material for annealing treatment, method for producing plate material for annealing treatment, and method for producing substrate |
| CN111886649B (en) * | 2018-03-30 | 2022-08-05 | Hoya株式会社 | Plate material for annealing treatment, method for producing plate material for annealing treatment, and method for producing substrate |
| CN111484235A (en) * | 2019-01-25 | 2020-08-04 | 香港理工大学深圳研究院 | Monitoring device and method for demolding of glass mold |
| CN111484235B (en) * | 2019-01-25 | 2022-08-12 | 香港理工大学深圳研究院 | Monitoring device and method for demolding of glass mold |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016138008A (en) | 2016-08-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3812287B2 (en) | Mold, molding apparatus, molding method, injection molding machine, injection compression molding machine, compression molding machine and glass molding machine | |
| CN105819671A (en) | Die assembly for molding glass optical element and manufacturing method of glass optical element | |
| US5822134A (en) | Optical lens and mold for molding the same | |
| US20170001896A1 (en) | Optical element molding mold set and optical element manufacturing method | |
| JP5458822B2 (en) | Optical element molding die and optical element molding method | |
| JPH0471853B2 (en) | ||
| JP6739131B2 (en) | Mold for molding optical component made of glass and method for manufacturing optical component made of glass using the mold | |
| CN102216812A (en) | Aspheric lens manufacturing method | |
| CN1939851B (en) | Perform for precise punch forming, manufacturing method thereof and manufacturing method of optical element | |
| TWI551553B (en) | Method for manufacturing glass preform and glass preform, method for manufacturing optical element and optical element | |
| JP3618983B2 (en) | Optical element molding method and apparatus | |
| WO2013024891A1 (en) | Shaping mold for glass molding, manufacturing method for optical element, and optical element | |
| CN106103365A (en) | The manufacture device of optical element | |
| JP4992035B2 (en) | Optical element manufacturing method | |
| JP2008230005A (en) | Plastic lens molding method and lens preform | |
| JP4784454B2 (en) | Optical element manufacturing method and manufacturing apparatus | |
| WO2021006194A1 (en) | Mold for forming glass lens | |
| JP4666679B2 (en) | Mold press molding apparatus and method for manufacturing molded body | |
| JP4951394B2 (en) | Optical element molding method | |
| JP4695485B2 (en) | Mold for molding and molding method | |
| JP3444515B2 (en) | Optical element molding method | |
| JP4473692B2 (en) | Manufacturing method of molded products | |
| JP2002114525A (en) | Method for molding optical element | |
| JPH08133767A (en) | Optical element forming method | |
| JP2808560B2 (en) | Method and apparatus for outflow of molten glass |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160803 |
|
| WD01 | Invention patent application deemed withdrawn after publication |