CN117490527A - Contact lens mold inspection jig and inspection method - Google Patents
Contact lens mold inspection jig and inspection method Download PDFInfo
- Publication number
- CN117490527A CN117490527A CN202311525632.5A CN202311525632A CN117490527A CN 117490527 A CN117490527 A CN 117490527A CN 202311525632 A CN202311525632 A CN 202311525632A CN 117490527 A CN117490527 A CN 117490527A
- Authority
- CN
- China
- Prior art keywords
- contact lens
- lens mold
- top cover
- base
- guide
- 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
- 238000007689 inspection Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000005259 measurement Methods 0.000 claims abstract description 7
- 238000013016 damping Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000001746 injection moulding Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013017 mechanical damping Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Eyeglasses (AREA)
Abstract
The invention relates to the field of inspection jigs, in particular to a contact lens mold inspection jig. Comprises a base, a top cover and a guide part. Wherein the base is provided with a cavity with an open upper end, and the cavity is used for carrying a contact lens mold; the top cover is provided with a lap joint surface propped against the contact lens mould, a guide surface perpendicular to the axis of the top cover and a measuring plane at the top end; the joint of the lap joint surface and the contact lens mold is set as a lap joint end, and a distance interval (h 1, h 2) from the lap joint end to a measurement plane is set as a standard interval; the guide part is matched with the top cover and moves up and down along the outer edge of the base. According to the invention, the guide part and the top cover are arranged into a split structure, so that the axis of the top cover gradually coincides with the axis of the contact lens mold in the process of pushing the top cover to lift by the guide part, the measuring plane above the top cover is kept horizontal, and the detection accuracy is improved.
Description
Technical Field
The invention relates to the field of inspection jigs, in particular to a contact lens mold inspection jig and an inspection method.
Background
After injection molding, the conventional detection equipment cannot accurately measure and detect whether the cutting position of the contact lens mold is qualified, so that the consistency and stability of the contact lens mold after injection molding cannot be ensured. In addition, a method for detecting the cutting position of the contact lens mould is lacked in the prior art, so that the production and sales of the contact lens mould are affected, and the eyesight of a person wearing the contact lens is easily affected.
Disclosure of Invention
The invention aims at: the utility model provides a contact lens mould inspection tool to solve among the prior art lack the technical problem of a tool to contact lens mould cutting off position and detect.
The technical scheme of the invention is as follows: a contact lens mold inspection jig comprising:
a base having a cavity with an upper end opening, wherein the cavity is used for carrying a contact lens mold;
the top cover is provided with a lap joint surface propped against the contact lens mould, a guide surface perpendicular to the axis of the top cover and a measuring plane at the top end;
the joint of the lap joint surface and the contact lens mold is set as a lap joint end, and a distance interval (h 1, h 2) from the lap joint end to a measurement plane is set as a standard interval;
and the guide part is matched with the top cover and performs lifting movement along the outer edge of the base.
Preferably, the guide part and the top cover are provided in a split structure, and the guide part is provided with an end part which is abutted against the guide surface and is arranged along the horizontal direction.
Preferably, part or all of the overlapping surface is provided as a spherical surface.
Preferably, the guide portion is held in contact with the base during sliding, creating frictional damping.
Preferably, the top of the base is provided with a limiting part, and the limiting part is matched with a step structure arranged at the bottom of the guiding part and used for limiting the guiding part.
Preferably, the base and/or the guide part are radially provided with through grooves for the removal of the contact lens mold.
A method of inspecting a contact lens mold, comprising the steps of:
s1, placing a contact lens mold into a cavity;
s2, buckling the top cover on the contact lens mold;
s3, pulling the guide part upwards to enable the end part of the guide part to prop against the guide surface on the top cover, pushing the top cover to move upwards continuously, and enabling the overlap surface and the contact lens die to slide relatively;
s4, after the lap end of the top cover is separated from contact with the contact lens mold, controlling the guide part to move downwards until the lap end of the top cover is propped against the contact lens mold again;
s5, measuring the distance h from the top end of the top cover to the bottom end of the base by using a height gauge, comparing the distance h with a standard interval, and if the distance h exceeds the standard interval, indicating that the contact lens mold is unqualified.
Compared with the prior art, the invention has the advantages that:
(1) The invention detects whether the cutting position of the contact lens mould is qualified or not by placing the contact lens mould on the base and fastening the top cover on the contact lens mould and measuring the height of the top cover.
(2) Further set up guide part and top cap into split type structure for the in-process that guide part promoted the top cap to go up and down, the axis of top cap and contact lens mould's axis coincidence gradually, thereby make the measurement plane of top cap top keep the level, improved the degree of accuracy that detects.
(3) The guide part keeps contact with the base in the sliding process, friction damping is generated, slow falling of the guide part is realized, and the phenomenon that the guide part collides with the base to be too large when the guide part slides to the lowest end is avoided, so that the jig vibrates, and further the top cover is inclined is avoided.
(4) Through grooves are formed in the base and the guide portion in the radial direction, so that the contact lens mold can be easily taken out.
Drawings
The invention is further described below with reference to the accompanying drawings and examples:
FIG. 1 is a block diagram of one embodiment of a contact lens mold inspection jig according to the present invention;
FIG. 2 is an exploded view of one embodiment of a contact lens mold inspection jig according to the present invention;
FIG. 3 is an exploded view of one embodiment of a contact lens mold inspection jig according to the present invention;
FIG. 4 is a schematic diagram illustrating an inspection method of one embodiment of a contact lens mold inspection jig according to the present invention;
FIG. 5 is a schematic diagram illustrating an inspection method of one embodiment of a contact lens mold inspection jig according to the present invention;
FIG. 6 is a schematic diagram illustrating an inspection method of one embodiment of a contact lens mold inspection jig according to the present invention;
FIG. 7 is a schematic diagram illustrating an inspection method of one embodiment of a contact lens mold inspection jig according to the present invention;
FIG. 8 is a block diagram of another embodiment of a contact lens mold inspection jig according to the present invention;
wherein: 1. the device comprises a base, 11, a chamber, 12, a limiting part, 2, a top cover, 21, a lap joint surface, 22, a measuring plane, 23, a guide surface, 3, a guide part, 4, a contact lens mold, 41, a cutting position, 5 and a through groove.
Detailed Description
The following describes the present invention in further detail with reference to specific examples:
as shown in fig. 8, a contact lens mold 4 inspection jig includes a base 1, a top cover 2, and a guide 3. For measuring the distance of the cutting position 41 of the contact lens mold 4 to the optical center.
The base 1 is formed by connecting two parts through bolts, a cavity 11 is formed in the top end of the base 1, and the cavity 11 is hollow and can be used for accommodating a contact lens mold to be tested. The top of the chamber 11 is open for the installation or removal of the contact lens mold 4.
A top cover 2 is arranged above the base 1, and the top cover 2 is buckled on the contact lens mould 4.
The lower side of the top cover 2 is set as a joint surface 21, the joint surface 21 is set as a spherical surface, and is abutted against the cutting position 41 of the contact lens mold 4, the abutting position is set as a joint end, and the upper surface of the top cover 2 is set as a measuring plane 22.
When the distance of the cut-off position 41 from the optical center does not correspond to the design requirements, the distance of the overlap end from the measuring plane 22 changes, resulting in a deviation of the height of the measuring plane 22 from the standard value. By measuring the height of the measuring plane 22, it is achieved that the cutting position 41 of the contact lens mold 4 is checked for deviations.
During measurement, it is required to ensure that the measurement plane 22 on the top cover 2 is arranged along the horizontal direction, so that the outer edge of the top cover 2 is provided with a guide part 3 extending downwards and vertically, and the inner wall of the guide part 3 is contacted with the outer wall of the base 1 and can perform lifting movement along the outer wall of the base 1. So that the measuring plane 22 is kept in a horizontal state when the faying surface 21 of the top cover 2 is abutted against the contact lens mold 4, and the height of the measuring plane 22 is conveniently measured by using a height gauge.
The base 1 is radially provided with a through groove 5 for facilitating the removal of the contact lens mold 4.
The present application also provides another embodiment, the specification of the contact lens mold 4 is determined according to the use requirement, therefore, not all the outer edge surfaces of the contact lens mold 4 can be perfectly matched with the cavity 11, and therefore, a certain deviation exists between the axis of the contact lens mold 4 and the axis of the top cover 2, and the deviation can cause that the cutting position 41 of the contact lens mold 4 cannot be completely abutted against the carrying surface, so that inaccurate detection is caused.
To solve the problem, as shown in fig. 1 to 3, the guide portion 3 is provided separately from the top cover 2 in this embodiment so that the guide portion 3 is a separate component. The inner wall of guide part 3 cooperates with the outer wall of base 1, and guide part 3 can carry out elevating movement along the outer wall of base 1, and guide part 3 bottom is provided with step structure, and step structure can offset with the spacing portion 12 that base 1 top set up for the spacing of guide part 3. An end surface under the top cover 2 is configured as a guide surface 23, and the guide surface 23 abuts against a horizontal end surface of the top of the guide portion 3. In this embodiment, to facilitate the removal of the contact lens mold 4, the through groove 5 is also formed in the guide portion 3 along the radial direction of the guide portion 3.
When in use, the utility model is characterized in that:
1. the interval (h 1, h 2) between the overlapping end and the measuring plane 22 is set as a standard interval, and the contact lens mold 4 is placed in the chamber 11.
2. The cover 2 is snapped onto the contact lens mold 4 such that the cover 2 is skewed as shown in fig. 4.
3. As shown in fig. 5, the guide part 3 is pulled upwards to make the end part thereof prop against the guide surface 23 on the top cover 2, and the top cover 2 is pushed to move upwards continuously, so that the overlap surface 21 and the contact lens mould 4 slide relatively, and in the process, the axis of the top cover 2 coincides with the axis of the contact lens, so that centering is realized.
4. As shown in fig. 6, when the top cover 2 is out of contact with the contact lens mold 4, the guide 3 is released and slowly falls under its own weight under the action of mechanical damping with the base 1 until the overlap surface 21 of the top cover 2 again abuts against the contact lens mold 4. At this time, as shown in fig. 7, the measurement plane 22 is in a horizontal state.
5. The distance h from the top end of the top cover 2 to the bottom end of the base 1 is measured by using a height gauge, and compared with a standard interval, if the standard interval is exceeded, the contact lens mold 4 is failed.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement the same according to the content of the present invention, and are not intended to limit the scope of the present invention. It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore desired that the present invention be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (7)
1. A contact lens mold inspection jig, comprising:
a base having a cavity with an upper end opening, wherein the cavity is used for carrying a contact lens mold;
the top cover is provided with a lap joint surface propped against the contact lens mould, a guide surface perpendicular to the axis of the top cover and a measuring plane at the top end;
the joint of the lap joint surface and the contact lens mold is set as a lap joint end, and a distance interval (h 1, h 2) from the lap joint end to a measurement plane is set as a standard interval;
and the guide part is matched with the top cover and performs lifting movement along the outer edge of the base.
2. The contact lens mold inspection jig according to claim 1, wherein the guide portion and the top cover are provided in a split structure, and the guide portion has an end portion provided in a horizontal direction in abutment with the guide surface.
3. A contact lens mold inspection jig according to claim 2, wherein the overlapping surface is partially or entirely spherical.
4. A contact lens mold inspection jig according to claim 2, wherein the guide portion is held in contact with the base during sliding, creating frictional damping.
5. The contact lens mold inspection jig according to claim 2, wherein the base top is provided with a limit portion, and the limit portion is matched with a step structure provided at the bottom of the guide portion for limiting the guide portion.
6. A contact lens mold inspection jig according to claim 5, wherein the base and/or guide are radially slotted for removal of a contact lens mold.
7. A method of inspecting a contact lens mold, comprising the steps of:
s1, placing a contact lens mold into a cavity;
s2, buckling the top cover on the contact lens mold;
s3, pulling the guide part upwards to enable the end part of the guide part to prop against the guide surface on the top cover, pushing the top cover to move upwards continuously, and enabling the overlap surface and the contact lens die to slide relatively;
s4, after the lap end of the top cover is separated from contact with the contact lens mold, controlling the guide part to move downwards until the lap end of the top cover is propped against the contact lens mold again;
s5, measuring the distance h from the top end of the top cover to the bottom end of the base by using a height gauge, comparing the distance h with a standard interval, and if the distance h exceeds the standard interval, indicating that the contact lens mold is unqualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311525632.5A CN117490527A (en) | 2023-11-16 | 2023-11-16 | Contact lens mold inspection jig and inspection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311525632.5A CN117490527A (en) | 2023-11-16 | 2023-11-16 | Contact lens mold inspection jig and inspection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117490527A true CN117490527A (en) | 2024-02-02 |
Family
ID=89667235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311525632.5A Pending CN117490527A (en) | 2023-11-16 | 2023-11-16 | Contact lens mold inspection jig and inspection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117490527A (en) |
-
2023
- 2023-11-16 CN CN202311525632.5A patent/CN117490527A/en active Pending
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