CN207058998U - Contact lens molds - Google Patents
Contact lens molds Download PDFInfo
- Publication number
- CN207058998U CN207058998U CN201720906752.3U CN201720906752U CN207058998U CN 207058998 U CN207058998 U CN 207058998U CN 201720906752 U CN201720906752 U CN 201720906752U CN 207058998 U CN207058998 U CN 207058998U
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- Prior art keywords
- mould element
- contact lens
- lens molds
- flange
- mould
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The purpose of this utility model is to provide a kind of contact lens molds for being used to manufacture contact lenses, and it includes the first mould element and the second mould element, wherein the second mould element has the flange containing multiple perforated holes.When eyeglass is stripped, the flash of contact lens material is bonded in perforated holes and departed from together with the second mould element and abandons.This contact lens molds can avoid contact lenses flash or fragment caused by the demoulding in manufacturing process from residuing on eyeglass thus influence the production yield of eyeglass.
Description
Technical field
The utility model is related to a kind of contact lens molds for being used to manufacture contact lenses, can in particular to one kind
The contact lens molds for being used to manufacture contact lenses for avoiding contact lens material flash from residuing on eyeglass.
Background technology
Soft contact lens typically using can fit male and female mold injection molding manufacture.As shown in Figure 1A, contact lenses
During making, by the contact lens polymer material (not shown) of liquid insert can fit mould 1 cavity plate 2 die cavity 4 in, then
Set is incorporated into punch-pin 3, and when the die cavity 4 that 3 sets of punch-pin is incorporated into cavity plate 2, unnecessary liquid polymer material can overflow.Known recessed
Convex mold, this flash 7 (liquid polymer material overflowed) can be rested in the flash groove 5 of cavity plate 2, as shown in Figure 1B.This
Be loaded with the mould of flash 7 hardens liquid polymer material by the processing of heating or irradiation and pressurization, is stripped after shaping.De-
During mould, as shown in Figure 1 C, flash 7 can be stayed in flash groove 5, but because of the stress influence of knockout course, this little flash 7 may be broken
Split and be adhered on eyeglass, this little flashes 7 or fragment must be removed with extra cleaning procedure, or can be made because that can not remove
Production yield into contact lenses declines.
The purpose of this utility model is to be to provide a kind of novel contact lens molds, and it can be avoided in contact lenses system
The production of the flash or chips affect contact lens of the contact lens polymer material remained during work by the demoulding is good
Rate.
Utility model content
The purpose of this utility model is to provide a kind of contact lens molds for being used to manufacture contact lenses, and it includes first
Mould element and the second mould element, whole flashes is all departed from together with the second mould element when eyeglass is stripped and abandon, with
Avoiding contact lenses, flash or fragment residue on eyeglass and influence the production yield of eyeglass caused by the demoulding in manufacturing process.
According to above-mentioned purpose, the utility model discloses a kind of contact lens molds for being used to manufacture contact lenses, and it is wrapped
Containing the first mould element and the second mould element.First mould element has circular cone cave portion and an outer shroud side wall, circular cone cave portion with
Receiving material, the circular cone cave portion have recess with the outer shroud side wall junction.Second mould element has circular cone convex portion and prolonged
Stretch side wall, the circular cone convex portion and the extension side wall joint have flange, have multiple perforated holes on the flange, and work as this
When one mould element is with the second mould element fit, the flange of second mould element is contained in the recess of the first mould element
In.
In an embodiment of the present utility model, wherein the outer shroud side wall of first mould element is in extension suitable length
After be outwardly formed the first outer rim, and the extension side wall of second mould element is outwardly formed outside second after suitable length is extended
Edge, wherein when second mould element and the first mould element fit, second outer rim of second mould element props up
First outer rim of first mould element.
In an embodiment of the present utility model, the plurality of perforated holes wherein on the flange of second mould element
It is uniformly distributed on the flange.
In an embodiment of the present utility model, wherein the contact lens molds are deserted plastic mould.
In an embodiment of the present utility model, wherein the contact lens molds are polypropylene ejection shaping mould.
In an embodiment of the present utility model, the edge side of the wherein flange of second mould element can prop up the first mould
The side wall of the recess of element.
In an embodiment of the present utility model, the wherein side wall of the recess of first mould element and vertical line
Angle is more than 5 degree.
In embodiment of the present utility model, the edge side of the flange of second mould element is inclined-plane, and first mould
The recess of tool element has oblique side wall, the edge side of the flange of second mould element is propped up the recess of first mould element
Oblique side wall.
In embodiment of the present utility model, the edge side of the flange of second mould element is vertical plane, and this
The recess of one mould element has vertical wall, and the edge side of the flange of second mould element props up first mould element
The recess the vertical wall.
In embodiment of the present utility model, the height of each perforated holes of the plurality of perforated holes is more than or equal to should
The aperture of perforated holes.
Compared with prior art, contact lens molds of the present utility model set recess in the first mould element, and second
Mould element sets the flange corresponding with recess, and flange has multiple perforated holes, is using stealth of the present utility model
When lens molds prepare contact lenses, flash can enter in flange and perforated holes, and with the second module element pull away when, overflow
Material pulls away simultaneously because being attached in flange and perforated holes, and is avoided that flash is remained after hardening on contact lens,
And then improve contact lenses and prepare yield.
Brief description of the drawings
Above-mentioned and other purpose, feature, advantage and embodiment to allow the utility model to disclose can become apparent, appended
Schema is described as follows：
Figure 1A is a kind of cross-sectional for being used to manufacture the mould of contact lenses of known techniques.
Figure 1B is the cross-sectional of Figure 1A mould use state.
Fig. 1 C are the cross-sectionals of Figure 1A another use state of mould.
Fig. 2A is a kind of contact lens molds for being used to manufacture contact lenses according to an embodiment of the present utility model
Cross-sectional.
Fig. 2 B to Fig. 2 C are the cross-sectionals of the use state of Fig. 2A contact lens molds.
Fig. 3 A are the cross-sectionals according to the second mould element of an embodiment of the present utility model.
Fig. 3 B are upward view of Fig. 3 A the second mould element along line segment A-A.
Fig. 3 C are Fig. 2 C mark ellipse C close-up schematic views.
Embodiment
Hereafter coordinate institute accompanying drawings to be described in detail for embodiment, but the embodiment provided and be not used to limit this reality
With new covered scope, and the description of structure operation is not used to limit the order of its execution, any to be reconfigured by element
Structure, it is produced have and other effects device, be all the scope that this exposure is covered.In addition, schema is only to illustrate for mesh
, and mapped not according to full size.To make to readily appreciate, similar elements or similar components will be with identical symbols in the description below
Indicate to illustrate.
In addition, in word (terms) used in full piece specification and claim, in addition to having and especially indicating, lead to
Often with have each word using in this area, in the content of this utility model with the usual meaning in special content.It is some
To describe word of the present utility model by it is lower or this specification other places discuss, having to provide those skilled in the art
Close guiding extra in description of the present utility model.
Refering to Fig. 2A to Fig. 2 C, Fig. 2A is to be used to manufacture contact lenses according to a kind of of an embodiment of the present utility model
The cross-sectional of contact lens molds.Fig. 2 B- Fig. 2 C are that the cross section of the use state of Fig. 2A contact lens molds shows
It is intended to.
As shown in Figure 2 A, the utility model discloses a kind of contact lens molds 10 for being used to manufacture contact lenses, and it is included
First mould element 11 and the second mould element 21.Wherein, this contact lens molds 10 can be deserted plastic mould, such as with
Injection moulded polypropylene mould made by polypropylene material ejection formation.
In an embodiment of the present utility model, the first mould element 11 has circular cone cave portion 12 with receiving material and outer
Ring-side wall 14, circular cone cave portion 12 have recess 16 with the junction of outer shroud side wall 14.Second mould element 21 has circular cone convex portion 22
And extension side wall 24, circular cone convex portion 22 are suitable with the external form in the circular cone cave portion 12 of the first mould element 11.Circular cone convex portion 22 is with prolonging
Stretching the joint of side wall 24 has flange 26, has multiple perforated holes 28 on flange 26.Preferably implement of the present utility model one
In example, the height of perforated holes 28 is more than or equal to the aperture of perforated holes, but not limited to this.
In an embodiment of the present utility model, the outer shroud side wall 14 of the first mould element 11 after suitable length is extended to
The first outer rim 15 of outer formation, i.e. the outer shroud side wall 14 of the first mould element 11 is directed away from circular cone cave after suitable length is extended
The direction in portion 12 forms the first outer rim 15, or the first mould element 11 of meaning outer shroud side wall 14 in being directed away from circular cone cave portion 12
Direction has the first outer rim 15；And the extension side wall 24 of the second mould element 21 is outwardly formed outside second after suitable length is extended
Edge 25, i.e. the extension side wall 24 of the second mould element 21 is directed away from the direction shape of circular cone convex portion 22 after suitable length is extended
Into the second outer rim 25, or the outer extension side wall 24 of the second mould element 21 of meaning has the in the direction for being directed away from circular cone convex portion 22
Two outer rims 25；Wherein when the second mould element 21 and the first 11 fit of mould element, the second outer rim of the second mould element 21
25 prop up the first outer rim 15 of the first mould element 11 with the mould member of circular cone convex portion 22 and first of the second mould element 21 of maintenance
The spacing of the appropriate lens thickness in the circular cone cave portion 12 of part 11.Meanwhile when the first mould element 11 circular cone cave portion 12 with this
During 22 fit of circular cone convex portion of two molds element 21, the flange 26 of the second mould element 21 is contained in the recessed of the first mould element 11
In portion 16.
Refering to Fig. 2 B, when preparing stealthy eye using the contact lens molds 10 of the present utility model for being used to manufacture contact lenses
During mirror, first using as the circular cone cave portion 12 of the liquid polymer of contact lens material the first mould element 11 of injection (not shown)
In, the circular cone cave portion 12 that the circular cone convex portion 22 of the second mould element 21 is then aligned to the first mould element 11 presses, until the
Second outer rim 25 of two molds element 21 props up the first outer rim 15 of the first mould element 11.Now, in the second mould element 21
The mould element 11 of circular cone convex portion 22 and first the gap of circular cone cave portion 12 between excessive liquid polymer can be spilled over to recess
16, and because the flash 19 (liquid polymer overflowed) that pressing is pushed and overflows can enter or even overflow the second mould element
The perforated holes 28 of 21 flange 26.
By the contact lens molds 10 of the above-mentioned polymer equipped with contact lens material by heating, irradiation or pressurized treatments
Afterwards, after making the polymer curing molding of liquid, demoulding program is carried out.In the demoulding, as shown in Figure 2 C, it is spilled over to recess 16 and goes forward side by side
Enter the flashes 19 of the perforated holes 28 of the flange 26 of the second mould element 21 because solidifying after heating, irradiation or pressurized treatments in passing through
In piercing hole 28.Therefore, when being pulled away with the second mould element 21, above-mentioned flash 19 will be same because being attached in perforated holes 28
When pull away, and be avoided that flash 19 and remain in solidification rear lens (not shown).
Refering to Fig. 3 A to Fig. 3 C.Fig. 3 A are the cross sections of the second mould element 21 according to an embodiment of the present utility model
Schematic diagram.Fig. 3 B are upward view of Fig. 3 A the second mould element 21 along line segment A-A, wherein the flange 26 of the second mould element 21
Have multiple perforated holes 28, multiple perforated holes 28 can be uniformly distributed on flange 26, and its number is not limiting as, and can by it is ripe in
This skilled worker designs number number and hole size according to actual demand.Fig. 3 C are display Fig. 2 C in the part for indicating oval C
Enlarged drawing, wherein the edge side 29 of the flange 26 of the second mould element 21 can prop up the side wall of the recess 16 of the first mould element 11
17.In this embodiment illustrated, the edge side 29 of flange 26 is inclined-plane, and the side wall 17 of the recess 16 of the first mould element 11 is set
Oblique side wall is calculated as, therefore the edge side 29 of the flange 26 of the second mould element 21 can prop up the side wall of the recess 16 of the first mould element 11
17.It is preferred that the angle of the side wall 17 of the recess 16 of the first mould element 11 and vertical line can be more than 5 degree, but not limited to this, its
In, the direction where vertical line refers to for perpendicular to the direction of the body of the first mould element 11.In the present embodiment, recess 16
Side wall 17 be designed as oblique side wall, but when actually implementing the utility model, the side wall 17 of this recess 16 is not limited to vertically
Wall or oblique side wall, but the edge side 29 preferably with the recess 16 of the second mould element 21 coordinates.Wherein, the side wall 17 of recess 16 is set
Vertical wall is calculated as, preferably the edge side 29 of the recess 16 of the second mould element 21 is vertical plane.
To sum up, contact lens molds of the present utility model set recess in the first mould element, and the second mould element is set
The flange corresponding with recess is put, and flange has multiple perforated holes, is prepared in the contact lens molds using the present invention hidden
During shape glasses, flash enters recess after overflowing, subsequently into flange and perforated holes, and as the second module element pulls away
When, flash pulls away simultaneously because being attached in flange and perforated holes, and is avoided that flash residual contact lenses mirror after hardening
On piece, and then improve contact lenses and prepare yield.Therefore, contact lens molds provided by the utility model can avoid stealthy eye
Mirror flash or fragment caused by the demoulding in manufacturing process residue on eyeglass thus influence the production yield of eyeglass.
Although the utility model is disclosed above with embodiment, so it is not limited to the utility model, Ren Heben
Field has usual skill, is not departing from spirit and scope of the present utility model, when that can be used for a variety of modifications and variations, therefore
The scope of protection of the utility model is worked as to be defined depending on appended claim institute defender.
Claims (10)
1. a kind of contact lens molds, it is characterised in that the contact lens molds include：
First mould element, it has circular cone cave portion and outer shroud side wall, and the circular cone cave portion is with receiving material, and the circular cone cave portion is with being somebody's turn to do
Outer shroud side wall junction has recess；And
Second mould element, it has circular cone convex portion and extension side wall, the circular cone convex portion to have flange with the extension side wall joint,
There are multiple perforated holes on the flange, and when first mould element and the second mould element fit, second mould
The flange of element is contained in the recess of first mould element.
2. contact lens molds as claimed in claim 1, it is characterised in that the outer shroud side wall of first mould element has
First outer rim, and the extension side wall of second mould element has the second outer rim, wherein when second mould element and this
During one mould element fit, second outer rim of second mould element props up first outer rim of first mould element.
3. contact lens molds as claimed in claim 1, it is characterised in that this on the flange of second mould element is more
Individual perforated holes are uniformly distributed on the flange.
4. contact lens molds as claimed in claim 1, it is characterised in that the contact lens molds are deserted plastic mold
Tool.
5. contact lens molds as claimed in claim 1, it is characterised in that the contact lens molds are polypropylene injection molding
Mould.
6. contact lens molds as claimed in claim 1, it is characterised in that the edge side of the flange of second mould element is supported
The firmly side wall of the recess of first mould element.
7. contact lens molds as claimed in claim 6, it is characterised in that the side wall of the recess of first mould element
It is more than 5 degree with the angle of vertical line.
8. contact lens molds as claimed in claim 1, it is characterised in that the edge side of the flange of second mould element is
Inclined-plane, and the recess of first mould element has oblique side wall, the edge side of the flange of second mould element props up this
The oblique side wall of the recess of the first mould element.
9. contact lens molds as claimed in claim 1, it is characterised in that the edge side of the flange of second mould element is
Vertical plane, and the recess of first mould element has vertical wall, the edge side of the flange of second mould element props up
The vertical wall of the recess of first mould element.
10. contact lens molds as claimed in claim 1, it is characterised in that each perforated holes of the plurality of perforated holes
Height be more than or equal to the perforated holes aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720906752.3U CN207058998U (en) | 2017-07-25 | 2017-07-25 | Contact lens molds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720906752.3U CN207058998U (en) | 2017-07-25 | 2017-07-25 | Contact lens molds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207058998U true CN207058998U (en) | 2018-03-02 |
Family
ID=61517229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720906752.3U Active CN207058998U (en) | 2017-07-25 | 2017-07-25 | Contact lens molds |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207058998U (en) |
-
2017
- 2017-07-25 CN CN201720906752.3U patent/CN207058998U/en active Active
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