CN101049720B - Sensor for alignment of mould core, sensing method, and mould composition of possessing the sensor for alignment - Google Patents
Sensor for alignment of mould core, sensing method, and mould composition of possessing the sensor for alignment Download PDFInfo
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- CN101049720B CN101049720B CN200610060187XA CN200610060187A CN101049720B CN 101049720 B CN101049720 B CN 101049720B CN 200610060187X A CN200610060187X A CN 200610060187XA CN 200610060187 A CN200610060187 A CN 200610060187A CN 101049720 B CN101049720 B CN 101049720B
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Abstract
A central aligning detector for mould set used to make optical lens is composed of a light emitting module for emitting a parallel light beam, a light receiving module for receiving said parallel light beam and generating a signal, and a signal processing unit for processing said signal. Its detecting method and the mould set with said central aligning detector are also disclosed.
Description
[technical field]
The present invention to the core detector, relates in particular to a kind of mould that is used to detect mould open/close mould position offset to the core detector and a kind ofly have this mould to the die assembly of core detector and the mould method for detecting to core about a kind of mould.
[background technology]
Along with in recent years flourish of opto-electronics, in many fields such as photoelectricity communication, digital camera lens, LED illuminators, optical lens is in light weight because of having, cost is low, and advantage such as impact resistance is good and obtained using widely.
At present, the optical lens shaping technology mainly comprises technology such as injection moulding, casting and compression moulding.All these optical lens shaping technology all be make through quantitative optical resin/plastic rubber material of being heated as fluid in mould at heating pressurized conditions compacted under, behind cooling curing, open the process technology that mould just can obtain needed optical lens then.Because mould is in the Machine Movement Process of folding mould, can cause the contraposition of punch core rod and die die cavity deviation to occur, therefore, when the mould of design optical lens, the die joint technology that adopt precision more, when making things convenient for the optical lens product stripping, also effectively avoided the contraposition of folding mold process punch core rod and die die cavity offset issue to occur to a certain extent.
But nonetheless, in the model process of optical lens, the contraposition offset issue of the folding mold process first module core rod and the second module die cavity still exists, thereby can cause the skew of folding mould position.For the so accurate product of model optical plastic lens, very little deviation also can cause significant impact to the quality of optical lens.The generation of the contraposition deviation of folding mold process punch core rod and die die cavity can cause the optical lens of institute's moulding to have the phenomenon of optical axis deviation (Decenter).When especially all being the lens of aspheric surface on the model two sides, this small deviation will make the optical quality of lens descend greatly, have a strong impact on the assembling yield of the optical system of using these lens.
Therefore, be necessary to provide a kind of mould that is used to detect mould open/close mould position offset to core detector, method for detecting and have the die assembly of this mould to the core detector.
[summary of the invention]
Below illustrate that with embodiment a kind of mould that is used to detect mould open/close mould position offset is to core detector, method for detecting and have the die assembly of this mould to the core detector.
A kind of mould is to the core detector, it comprises: an illuminating module, an one light-receiving module and a signal processing apparatus, this illuminating module comprises a light-emitting device and one first firm banking, this light-emitting device is positioned on this first firm banking, be used to produce a parallel projection light beam, this light-receiving module comprises an optical pickup apparatus, one optical adjusting frame and one second firm banking, this optical pickup apparatus is positioned on this optical adjusting frame, be used to receive processing from the parallel projection light beam of illuminating module and produce a signal, this optical adjusting frame is positioned on this second firm banking, this signal processing apparatus links to each other with this optical pickup apparatus, is used to handle the signal from the light-receiving module.
A kind of die assembly with mould to the core detector, it comprises mould, illuminating module, light-receiving module and signal processing apparatus; This mould comprises first module and second module; This illuminating module comprises the light-emitting device and first firm banking, and this light-emitting device is positioned on this first firm banking, is used to produce a parallel projection light beam, and this first firm banking is fixed in second module surface; This light-receiving module comprises optical pickup apparatus, optical adjusting frame and second firm banking, this optical pickup apparatus is positioned on this optical adjusting frame, be used to receive processing from the parallel projection light beam of illuminating module and produce a signal, this optical adjusting frame is positioned on this second firm banking, be used to adjust the displacement of optical pickup apparatus with respect to light-emitting device, this signal processing apparatus links to each other with this optical pickup apparatus, be used to handle the signal from the light-receiving module, this second firm banking is fixed in first module surface.
A kind of mould is to the method for detecting of core, and it may further comprise the steps: provide a mould to the core detector, it comprises illuminating module, light-receiving module and signal processing apparatus; This illuminating module is fixed in second module surface of mould and the light-receiving module is fixed in first module surface of mould; Launch a parallel projection light beam by illuminating module, received by the light-receiving module and produce a signal behind this parallel projection light beam, this signal is by signal processing means processes and export numerical value; Output numerical value to signal processing apparatus returns to zero; Mould open/close mould position skew in the model process is detected immediately.
With respect to prior art, described mould is to core detector, method for detecting and have mould the advantage of the die assembly of core detector is: at first, adopt this mould easy to use, can detect immediately mould open/close mould position offset to the core detector; Secondly, utilize the data of mould to the instant detecting of core detector, can learn the variation of mould immediately in the contraposition side-play amount of folding mold process punch and die, be convenient in the model manufacturing process of optical lens, carry out effective mass parameter control, improve optical lens product quality and yield, prolong the service life of mould.
[description of drawings]
Fig. 1 is that the mould of embodiment one is to core detector schematic diagram.
Fig. 2 A, 2B are four-quadrant light arrangement for detecting principle schematic.
Fig. 3 is that the mould of embodiment two is to core detector schematic diagram.
Fig. 4 A has the die assembly schematic diagram of mould to the core detector.
Fig. 4 B is that mould matched moulds process mould is to core detector detecting schematic diagram.
Fig. 4 C is that mould was detected schematic diagram to the core detector when no position was offset behind the mould matched moulds.
Fig. 4 D is that mould was detected schematic diagram to the core detector when position skew was arranged behind the mould matched moulds.
[specific embodiment]
Below will with embodiment illustrate a kind of mould that is used to detect mould open/close mould position offset to the core detector, have this mould to the die assembly of core detector and mould method for detecting to core.
See also Fig. 1, be the mould that provides of embodiment one to core detector 100, it comprises an illuminating module 10, a light-receiving module 20 and a signal processing apparatus 30.
This illuminating module 10 comprises a light-emitting device 12 and one first firm banking 14, and this light-emitting device 12 is positioned on this first firm banking 14, is used to produce a parallel projection light beam.In the present embodiment, this light-emitting device 12 comprises a smooth emission cavity 111, a light emitting source 121 and collimation lens 131, this light emission cavity 111 has one first transmission region 112, this light emitting source 121 and collimation lens 131 are arranged in this light emission cavity 111, the light that is sent by light emitting source 121 is through behind the collimation lens 131, form the parallel projection light beam, penetrate by first transmission region 112.Illuminating source 121 is optional from laser diode (LD) or light emitting diode (LED).
This light-receiving module 20 comprises an optical pickup apparatus 22, an optical adjusting frame 24 and one second firm banking 26, and this optical pickup apparatus 22 is positioned on this optical adjusting frame 24, is used to receive and handle from the parallel projection light beam of illuminating module and produces a signal.This optical pickup apparatus 22 comprises an optical receiver cavity 211, a condenser lens 221 and a four-quadrant light arrangement for detecting 231, this optical receiver cavity 211 has one second transmission region 212, this condenser lens 221 and this four-quadrant light arrangement for detecting 231 are arranged in this optical receiver cavity 211, this four-quadrant light arrangement for detecting 231 is positioned at this condenser lens 221 focus places, the parallel projection light beam that is penetrated by illuminating module 10 can see through this second transmission region 212, after condenser lens 221 focusing, receive and produce a signal by four-quadrant light arrangement for detecting 231.This optical adjusting frame 24 is positioned on this second firm banking 26, is used to adjust the displacement of optical pickup apparatus 22 with respect to light-emitting device 12.
This signal processing apparatus 30 links to each other with this optical pickup apparatus 22, is used to handle the signal that is received and produced by four-quadrant light arrangement for detecting 231 from light-receiving module 20.Four-quadrant light arrangement for detecting 231 is that four identical photodiodes of performance are arranged the optical detector spare that forms according to the rectangular co-ordinate requirement, four photodiodes, for example four-quadrant silicon photocell or four-quadrant photodiode are sequentially arranged in horizontal X, vertical Y, the level-X, vertical-four quadrantal headings of Y of rectangular coordinate system.To four-quadrant light arrangement for detecting 231, light source can cause the difference of amplitude output signal on four quadrants, judge the situation of skew by this difference through the light source projects after condenser lens 221 focusing.Fig. 2 A, Fig. 2 B are depicted as four-quadrant light arrangement for detecting principle.As Fig. 2 A, when light source beam spot 60 is centered close to the four-quadrant center, the light signal strength that receives on 231 4 quadrants of four-quadrant light arrangement for detecting equates, the error signal that obtains after signal processing apparatus 30 computings is zero, and this moment, the output valve on horizontal displacement X and vertical displacement Y direction also was zero; As Fig. 2 B, when light source beam spot 60 misalignment four-quadrant centers, the light signal strength that receives on 231 4 quadrants of four-quadrant light arrangement for detecting is unequal, through on horizontal displacement X and vertical displacement Y direction output valve being arranged after signal processing apparatus 30 computings.
Preferably, see also Fig. 3, be the mould that provides of embodiment two to core detector 200, it comprises an illuminating module 10, a light-receiving module 20 and a signal processing apparatus 30.This illuminating module 10 comprises a light-emitting device 12, a thermal insulation layer 40 and one first firm banking 14, and this thermal insulation layer 40 is between the light-emitting device 12 and first firm banking 14.This light-receiving module 20 comprises an optical pickup apparatus 22, an optical adjusting frame 24, a thermal insulation layer 40 and one second firm banking 26, and this thermal insulation layer 40 is between the optical pickup apparatus 22 and second firm banking 26.This thermal insulation layer 40 is used for intercepting the heat that mould distributes in the model process, to guarantee the precision of position skew detecting.The optional self-polystyrene foamed plastics of these thermal insulation layer 40 materials, polyethylene foams, Vestolit, polyurethane foam plastics, phenolic resin foam plastics or cork etc.
See also Fig. 4 A, mould can be fixed in mould 50 surfaces to first firm banking 14 and second firm banking 26 of core detector 100 or 200, forms to have the die assembly 300 of mould to the core detecting function.Mould 50 is made up of first module 501 and second module 502, and wherein first module 501 is punch, and second module 502 is dies, also can be for first module 501 is dies, and second module 502 is punch.Illuminating module 10 is fixed in the surface of second module 502 by first firm banking 14, and light-receiving module 20 is fixed in the surface of first module 501 by second firm banking 26.First firm banking 14 and second firm banking 26 can be fixed for magnetic force adsorption type with the fixed form of die surface, bolt-nut mechanical type is fixed or the sticker formula is fixing etc.In the present embodiment, first module 501 is punch, second module 502 is dies, this first firm banking 14 is magnetic bases, it is fixed in second module, 502 surfaces by magnetic force absorption, this second firm banking 26 also is magnetic bases, and it is fixed in first module, 501 surfaces by magnetic force absorption.
See also Fig. 4 A, Fig. 4 B, Fig. 4 C and Fig. 4 D, the mould that is to use embodiment one to be provided is detected the schematic diagram of mould 50 folding mould position drift condition to core detector 100.Method for detecting may further comprise the steps:
The first step provides a mould to core detector 100;
This mould comprises an illuminating module 10, a light-receiving module 20 and a signal processing apparatus 30 to core detector 100.
In second step, this illuminating module 10 is fixed in second module 502 surface of mould 50 and light-receiving module 20 is fixed in first module, 501 surfaces of mould 50;
Fig. 4 A has the schematic diagram of mould to the die assembly 300 of core detecting function, at this moment, mould 50 is die opening state, mould has been fixed on the mould 50 core detector 100, illuminating module 10 is fixed in second module, 502 surfaces and light-receiving module 20 is fixed in first module, 501 surfaces, and wherein first module 501 is punch, and second module 502 is dies, also can be for first module 501 is dies, second module 502 is punch.In the present embodiment, first module 501 is punch, and second module 502 is dies.
In the 3rd step, by illuminating module 10 emissions one parallel projection light beam, by producing a signal behind light-receiving module 20 these parallel projection light beams of reception, this signal is handled and output numerical value by signal processing apparatus 30;
In the 4th step, the output numerical value of signal processing apparatus 30 is returned to zero;
Behind first module 501 and second module, 502 accurate matched moulds with mould 50, the position offset of being exported by signal processing apparatus 30 records should all be zero on horizontal displacement X and vertical displacement Y direction.Zeroing also can be undertaken by the optical adjusting frame 24 of adjusting light-receiving module 20, and this optical adjusting frame 24 is to fix by a spherical point, adjusts the displacement of optical pickup apparatus 22 with respect to light-emitting device 12 by a spring simultaneously.Optical pickup apparatus 22 to light-receiving module 20 is finely tuned with respect to the position of light-emitting device 12, all is zero on horizontal displacement X and vertical displacement Y direction until the position offset by signal processing apparatus 30 record outputs.
In the 5th step, the position offset of first module 501 in the model process and second module, 502 folding moulds is detected immediately.
Fig. 4 B is the detecting schematic diagrames of mould 50 matched moulds process moulds to core detector 100, and the contraposition side-play amount of first module 501 and second module 502 is by signal processing apparatus 30 record outputs in the matched moulds process.Position offset by by signal processing apparatus 30 record output in time can carry out the manufacturing process parameter control to model product especially optical lens product, to improve optical lens product quality and yield.Fig. 4 C is that mould was to the detecting schematic diagram of core detector 100 when no position was offset behind mould 50 matched moulds, and this moment, the output valve on horizontal displacement X and vertical displacement Y direction by signal processing apparatus 30 record outputs was zero, did not have occurrence positions to be offset when matched moulds is described.Fig. 4 D has the detecting schematic diagram of position when skew mould to core detector 100 behind mould 50 matched moulds, all can export certain numerical value by signal processing apparatus 30 record outputs this moment on horizontal displacement X and vertical displacement Y direction, bit errors had appearred in first module 501 and second module 502 when matched moulds was described, the position shift phenomenon has taken place, just can carry out the control of manufacturing process according to this numerical value, for example on mould, increase pad so that the skew of folding mould position obtains suitable adjustment etc. to the model product.
Above-mentioned described mould to core detector, mould to the core method for detecting and have mould the advantage of the die assembly of core detector is: at first, this mould is easy to use to the core detector, can detect immediately mould open/close mould position offset; Secondly, utilize the data of mould to the instant detecting of core detector, can learn the variation of mould immediately in the contraposition side-play amount of folding mold process punch and die, be convenient in the model manufacturing process of optical lens, carry out effective mass parameter control, improve optical lens product quality and yield, prolong the service life of mould.
Claims (18)
1. a mould is characterized in that the core detector, comprises illuminating module, light-receiving module and signal processing apparatus; This illuminating module comprises the light-emitting device and first firm banking, and this light-emitting device is positioned on this first firm banking, is used to produce a parallel projection light beam; This light-receiving module comprises optical pickup apparatus, optical adjusting frame and second firm banking, this optical pickup apparatus is positioned on this optical adjusting frame, be used to receive processing from the parallel projection light beam of illuminating module and produce a signal, this optical adjusting frame is positioned on this second firm banking, be used to adjust the displacement of optical pickup apparatus with respect to light-emitting device, this signal processing apparatus links to each other with this optical pickup apparatus, is used to handle the signal from the light-receiving module.
2. mould as claimed in claim 1 is to the core detector, it is characterized in that, described light-emitting device comprises light emission cavity, light emitting source and collimation lens, this light emission cavity has first transmission region, this light emitting source and collimation lens are arranged in this light emission cavity, the light that is sent by light emitting source forms the parallel projection light beam behind collimation lens, penetrated by this first transmission region.
3. mould as claimed in claim 2 is characterized in that to the core detector described light emitting source is laser diode or light emitting diode.
4. mould as claimed in claim 1 is to the core detector, it is characterized in that, described optical pickup apparatus comprises optical receiver cavity, condenser lens and four-quadrant light arrangement for detecting, this optical receiver cavity has second transmission region, this condenser lens and four-quadrant light arrangement for detecting are arranged in this optical receiver cavity, the parallel projection light beam that is penetrated by illuminating module can see through this second transmission region, and the line focus lens focus on the back and received by four-quadrant light arrangement for detecting.
5. mould as claimed in claim 4 is characterized in that to the core detector described four-quadrant light arrangement for detecting links to each other with signal processing apparatus, to handle the signal that receives and produce through four-quadrant light arrangement for detecting.
6. mould as claimed in claim 4 is characterized in that to the core detector described four-quadrant light arrangement for detecting is four-quadrant silicon photocell or four-quadrant photodiode.
7. mould as claimed in claim 1 is to the core detector, it is characterized in that, described illuminating module and light-receiving module also comprise a thermal insulation layer respectively, this thermal insulation layer lays respectively between the light-emitting device and first firm banking and between the optical pickup apparatus and second firm banking, is used to intercept the heat that mould distributes.
8. mould as claimed in claim 7 is characterized in that to the core detector described heat-barrier material is selected from polystyrene foam plastics, polyethylene foams, Vestolit, polyurethane foam plastics, phenolic resin foam plastics or cork.
9. the die assembly with mould to the core detector is characterized in that, comprises mould, illuminating module, light-receiving module and signal processing apparatus; This mould comprises first module and second module; This illuminating module comprises the light-emitting device and first firm banking, and this light-emitting device is positioned on this first firm banking, is used to produce a parallel projection light beam, and this first firm banking is fixed in second module surface; This light-receiving module comprises optical pickup apparatus, optical adjusting frame and second firm banking, this optical pickup apparatus is positioned on this optical adjusting frame, be used to receive processing from the parallel projection light beam of illuminating module and produce a signal, this optical adjusting frame is positioned on this second firm banking, be used to adjust the displacement of optical pickup apparatus with respect to light-emitting device, this signal processing apparatus links to each other with this optical pickup apparatus, be used to handle the signal from the light-receiving module, this second firm banking is fixed in first module surface.
10. the die assembly with mould to the core detector as claimed in claim 9, described first module is a punch, second module is a die.
11. the die assembly with mould to the core detector as claimed in claim 9, described first module is a die, and second module is a punch.
12. the die assembly with mould to the core detector as claimed in claim 9, the fixed form of described first firm banking and second firm banking and die surface are that magnetic force adsorption type is fixed, nut-the screw rod mechanism formula is fixed or the sticker formula is fixed.
13. the die assembly with mould to the core detector as claimed in claim 9, it is characterized in that, described light-emitting device comprises light emission cavity, light emitting source and collimation lens, this light emission cavity has first transmission region, this light emitting source and collimation lens are arranged in this light emission cavity, the light that is sent by light emitting source forms the parallel projection light beam behind collimation lens, penetrated by this first transmission region.
14. the die assembly with mould to the core detector as claimed in claim 9, it is characterized in that, described optical pickup apparatus comprises optical receiver cavity, condenser lens and four-quadrant light arrangement for detecting, this optical receiver cavity has second transmission region, this condenser lens and four-quadrant light arrangement for detecting are arranged in this optical receiver cavity, the parallel projection light beam that is penetrated by illuminating module can see through this second transmission region, and the line focus lens focus on the back and received by four-quadrant light arrangement for detecting.
15. the die assembly with mould to the core detector as claimed in claim 14 is characterized in that, described four-quadrant light arrangement for detecting links to each other with signal processing apparatus, to handle the signal that receives and produce through four-quadrant light arrangement for detecting.
16. the die assembly with mould to the core detector as claimed in claim 9, it is characterized in that, described illuminating module and light-receiving module also comprise a thermal insulation layer respectively, this thermal insulation layer lays respectively between light-emitting device and optical pickup apparatus and its firm banking separately, is used to intercept the heat that mould distributes.
17. a mould is to the method for detecting of core, it may further comprise the steps: provide a mould to the core detector, it comprises illuminating module, light-receiving module and signal processing apparatus; This illuminating module is fixed in second module surface of mould and the light-receiving module is fixed in first module surface of mould; Launch a parallel projection light beam by illuminating module, received by the light-receiving module and produce a signal behind this parallel projection light beam, this signal is by signal processing means processes and export numerical value; Output numerical value to signal processing apparatus returns to zero; The skew of mould model process folding mould position is detected immediately.
18. mould as claimed in claim 17 is characterized in that to the method for core detecting described output numerical value zeroing to signal processing apparatus is to be undertaken by regulating optical adjusting frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610060187XA CN101049720B (en) | 2006-04-05 | 2006-04-05 | Sensor for alignment of mould core, sensing method, and mould composition of possessing the sensor for alignment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610060187XA CN101049720B (en) | 2006-04-05 | 2006-04-05 | Sensor for alignment of mould core, sensing method, and mould composition of possessing the sensor for alignment |
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| Publication Number | Publication Date |
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| CN101049720A CN101049720A (en) | 2007-10-10 |
| CN101049720B true CN101049720B (en) | 2010-09-01 |
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| CN200610060187XA Expired - Fee Related CN101049720B (en) | 2006-04-05 | 2006-04-05 | Sensor for alignment of mould core, sensing method, and mould composition of possessing the sensor for alignment |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4943495B2 (en) * | 2009-12-21 | 2012-05-30 | シャープ株式会社 | Optical element molding equipment |
| CN102133792A (en) * | 2011-01-27 | 2011-07-27 | 浙江德玛克机械有限公司 | Demolding detection mechanism of injection machine |
| CN112013769B (en) * | 2019-05-29 | 2023-04-07 | 深圳市立林智感科技有限公司 | Signal sensing device for displacement sensor and application method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3690770A (en) * | 1969-11-18 | 1972-09-12 | Siegfried Raith | Method to measure mirror deflection |
| CN1054848A (en) * | 1990-02-16 | 1991-09-25 | 德国汤姆森-勃朗特有限公司 | Light scanning apparatus |
| CN2110207U (en) * | 1991-08-13 | 1992-07-15 | 华中理工大学 | Precision auto-position device |
| CN2151441Y (en) * | 1992-11-16 | 1993-12-29 | 天津大学 | Holographic laser probe |
-
2006
- 2006-04-05 CN CN200610060187XA patent/CN101049720B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3690770A (en) * | 1969-11-18 | 1972-09-12 | Siegfried Raith | Method to measure mirror deflection |
| CN1054848A (en) * | 1990-02-16 | 1991-09-25 | 德国汤姆森-勃朗特有限公司 | Light scanning apparatus |
| CN2110207U (en) * | 1991-08-13 | 1992-07-15 | 华中理工大学 | Precision auto-position device |
| CN2151441Y (en) * | 1992-11-16 | 1993-12-29 | 天津大学 | Holographic laser probe |
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