Intraocular lens forming mold convenient to demold

Abstract

The invention provides an intraocular lens forming mold convenient to demold, and relates to the field of intraocular lens, the intraocular lens forming mold comprises an upper mold and a lower mold, the upper mold and the lower mold are both provided with a lens forming cavity, an air pressure chamber is formed in the lower mold, and an ejection groove is vertically formed between the air pressure chamber and the lens forming cavity; the top of the ejection groove is communicated with the crystal forming cavity, the bottom of the ejection groove is communicated with the air pressure chamber, a piston in the ejection groove is matched with an ejector pin assembly capable of moving up and down, one side of the air pressure chamber is fixedly connected with an air adding pipe, and the other end of the air adding pipe is connected with an air pump. According to the intraocular lens forming mold convenient to demold, through the arrangement of the ejection groove and the ejector pin assembly, during use, the air pressure chamber is inflated through the air adding pipe, the ejector pin assembly ascends under the air pressure effect to eject a workpiece out of the forming cavity, and therefore demolding is convenient, use is convenient, and the production efficiency is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of artificial crystal technology, in particular to an artificial crystal forming mold convenient for demolding. BACKGROUND

[0002] Artificial crystals are mainly used for cataract surgery or refractive correction, and generally include trifocal artificial lenses, bifocal artificial lenses, monofocal artificial lenses, etc. Artificial crystal molds are key tools for manufacturing artificial lenses.

[0003] According to the optical mold for artificial crystal production and processing provided in Chinese Patent No. CN216068328U, the contrast file includes a pair of upper molds with half-crystal concave surfaces and two haptic concave surfaces, and a lower mold with a half-crystal concave surface; the upper mold and the lower mold are made of optical glass in a cylindrical shape, the crystal concave surface and the haptic concave surface area are coated with a chromium layer; the two haptic concave surfaces on the upper mold are symmetrically arranged with the center of the half-crystal concave surface.

[0004] However, the optical mold for artificial crystal production and processing proposed in the file is not convenient for demolding the workpiece, not only the efficiency is low, but also the surface of the workpiece is easily damaged, affecting the production quality. SUMMARY

[0005] (I) Technical problems solved

[0006] In view of the deficiencies of the prior art, the present application provides an artificial crystal forming mold convenient for demolding, which solves the problems raised in the background art.

[0007] (II) Technical solutions

[0008] To achieve the above purpose, the present application is realized by the following technical solutions: an artificial crystal forming mold convenient for demolding, comprising an upper mold and a lower mold, the upper mold and the lower mold are provided with a crystal forming cavity, a gas pressure chamber is provided in the lower mold, a ejection groove is vertically arranged between the gas pressure chamber and the crystal forming cavity, the top of the ejection groove and the crystal forming cavity are in communication with each other, the bottom of the ejection groove and the gas pressure chamber are in communication with each other, a piston is provided in the ejection groove, and a top pin assembly capable of moving up and down is matched, one side of the gas pressure chamber is fixedly connected with a gas inlet pipe, and the other end of the gas inlet pipe is connected with a gas pump.

[0009] Preferably, the ejection groove is arranged at the outer edge of the center concave surface of the crystal forming cavity, and the diameter of the ejection groove is smaller than the width of the outer edge.

[0010] Preferably, the number of ejection grooves is not less than four, and the plurality of ejection grooves are arranged at equal angles with the center concave surface of the crystal forming cavity as the center.

[0011] Preferably, the lower mold is fixedly connected with a positioning rod, and the upper mold is provided with a positioning hole matched with the positioning rod.

[0012] Preferably, the ejector assembly comprises an outer shell, a transverse plate, a spring, a long rod, a permanent magnet, an electromagnet and a sealing plate, the outer shell is provided as a cylinder with an open lower end, the outer shell piston is fitted in the ejection groove, the top end of the outer shell is provided with a sealing hole matched with the sealing plate, the transverse plate is fixedly connected in the outer shell, the long rod is provided with a sliding hole matched with the long rod, the long rod is slidingly fitted in the sliding hole, the top end of the long rod is fixedly connected with the sealing plate, the bottom of the sealing plate is fixedly connected with the spring, the bottom end of the spring is fixedly connected with the transverse plate, under the action of the spring, the sealing plate completely covers the sealing hole, the bottom end of the long rod extends into the air pressure chamber and is fixedly connected with the permanent magnet, the bottom of the air pressure chamber is fixedly connected with the electromagnet, when demolding, the electromagnet is turned on to control the electromagnet and the permanent magnet to be mutually attracted magnets, so that the permanent magnet drives the sealing plate to descend through the long rod against the spring under the action of the magnetic field, so that the sealing hole is opened, at this time, the air pump is opened to output gas into the air pressure chamber through the gas filling pipe, so that the gas is blown out from the sealing hole at the top of the outer shell, the gas performs auxiliary preliminary demolding, then the electromagnet is turned off, the sealing plate completely seals the sealing hole under the action of the spring, at this time, the air pressure in the air pressure chamber is continuously increased, so that the whole outer shell rises along the ejection groove, and the outer shell ejects the workpiece after the preliminary auxiliary demolding.

[0013] Preferably, the sealing plate comprises a top plate layer and a bottom plate layer, both the top plate layer and the bottom plate layer are provided as circles, the diameter of the top plate layer is smaller than that of the bottom plate layer, the top plate layer is fixedly connected to the top of the bottom plate layer, and the axis lines of the top plate layer and the bottom plate layer are collinear.

[0014] Preferably, the top of the bottom plate layer is fixedly connected with a sealing layer.

[0015] Preferably, the outer shell is provided with a limiting ventilation hole preventing the outer shell from being taken out of the ejection groove.

[0016] (Three) beneficial effects

[0017] The application provides a lens forming mold facilitating demolding.

[0018] 1. The lens forming mold facilitating demolding, through the setting of the ejection groove and the ejector assembly, the air pressure chamber is inflated through the gas filling pipe during use, the ejector assembly rises under the action of the air pressure to eject the workpiece from the forming cavity, thereby facilitating demolding, the use is convenient, and the production efficiency is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1It is a structural schematic diagram of the present application;

[0020] Figure 2 It is a main view of the structural diagram of the present application;

[0021] Figure 3 It is a sectional view of the structural diagram of the present application;

[0022] Figure 4 It is a structural diagram of the present application Figure 3 It is an enlarged view of the structure at A in the present application;

[0023] Figure 5 It is a structural diagram of the present application Figure 1 ;

[0024] Figure 6 It is a structural diagram of the present application Figure 2 ;

[0025] Figure 7 It is a structural diagram of the present application Figure 3 ;

[0026] Figure 8 It is a structural diagram of the present application

[0027] In the figure: 1 lower mold, 2 upper mold, 3 positioning rod, 4 crystal forming cavity, 5 ejector assembly, 6 gas inlet pipe, 7 ejection groove, 8 air pressure chamber, 9 electromagnet, 10 permanent magnet, 11 long rod, 12 housing, 13 cross plate, 14 spring, 15 sealing plate, 16 limiting vent hole, 17 bottom plate layer, 18 top plate layer, 19 sealing layer. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application.

[0029] The present application provides a kind of artificial crystal forming mold for facilitating demolding, as shown in Figures 1-8 It is shown in the figure, including upper mold 2, lower mold 1, upper mold 2 and lower mold 1 are all set with crystal forming cavity 4, air pressure chamber 8 is set in lower mold 1, air pressure chamber 8 and crystal forming cavity 4 are vertically provided with ejection groove 7 between, the top of ejection groove 7 and crystal forming cavity 4 are interconnected, the bottom of ejection groove 7 and air pressure chamber 8 are interconnected, the piston in ejection groove 7 is matched with the up-and-down movement of ejector assembly 5, one side of air pressure chamber 8 is fixedly connected with gas inlet pipe 6, the other end of gas inlet pipe 6 is connected with air pump.

[0030] Through the setting of ejection groove 7 and ejector assembly 5, inflation is carried out in air pressure chamber 8 through gas inlet pipe 6 when using, under the action of air pressure, the workpiece is ejected from forming cavity by the rising of ejector assembly 5, so that demolding is facilitated, convenient to use, and production efficiency is effectively improved.

[0031] The ejection groove 7 is arranged at the outer edge of the central concave surface of the crystal forming cavity 4, and the diameter of the ejection groove 7 is smaller than the width of the outer edge.

[0032] The number of the ejection grooves 7 is not less than four, and the plurality of ejection grooves 7 are arranged at equal angles with the central concave surface of the crystal forming cavity 4 as the center.

[0033] The lower mold 1 is fixedly connected with a positioning rod 3, and the upper mold 2 is provided with a positioning hole matched with the positioning rod 3.

[0034] The ejector pin assembly 5 comprises a shell 12, a cross plate 13, a spring 14, a long rod 11, a permanent magnet 10, an electromagnet 9 and a sealing plate 15. The shell 12 is a cylinder with an open lower end, and is piston-fitted in the ejection groove 7. The top end of the shell 12 is provided with a sealing hole matched with the sealing plate 15. The shell 12 is fixedly connected with the cross plate 13. The cross plate 13 is provided with a sliding hole matched with the long rod 11. The long rod 11 is slidingly fitted in the sliding hole. The top end of the long rod 11 is fixedly connected with the sealing plate 15. The bottom of the sealing plate 15 is fixedly connected with the spring 14. The bottom end of the spring 14 is fixedly connected with the cross plate 13. Under the action of the spring 14, the sealing plate 15 completely covers the sealing hole. The bottom end of the long rod 11 extends into the air pressure chamber 8 and is fixedly connected with the permanent magnet 10. The bottom of the air pressure chamber 8 is fixedly connected with the electromagnet 9. When demolding, the electromagnet 9 is turned on to control the electromagnet 9 and the permanent magnet 10 to be mutually attracted magnets, so that the permanent magnet 10 drives the sealing plate 15 to descend against the spring 14 through the long rod 11 under the action of the magnetic field, so that the sealing hole is opened. At this time, the air pump is opened to output gas into the air pressure chamber 8 through the gas supply pipe 6, so that the gas is blown out from the sealing hole at the top of the shell 12. The gas assists in preliminary demolding, and then the electromagnet 9 is turned off. The sealing plate 15 completely seals the sealing hole under the action of the spring 14. At this time, the air pressure in the air pressure chamber 8 is continuously increased, so that the whole shell 12 rises along the ejection groove 7, and the shell 12 ejects the workpiece after preliminary auxiliary demolding.

[0035] If the workpiece is directly lifted by the ejector pin assembly 5 for demolding, it is too hard to cause the workpiece to wear, therefore through the setting of the ejector pin assembly 5, when the electromagnet 9 is opened for demolding, the electromagnet 9 and the permanent magnet 10 are mutually attracted magnets, so that the permanent magnet 10 is driven by the long rod 11 to overcome the spring 14 to descend, so that the sealing hole is opened, at this time the air pump is opened to output gas into the air pressure chamber 8 through the gas inlet pipe 6, so that the gas is blown out from the sealing hole at the top of the shell 12, the gas is preliminarily demolded, then the electromagnet 9 is closed, the sealing plate 15 is completely sealed by the spring 14, at this time the air pressure in the air pressure chamber 8 is continuously increased, so that the whole shell 12 is lifted along the ejection groove 7, the shell 12 ejects the workpiece preliminarily demolded by the gas, so that the workpiece is preliminarily demolded by the gas sprayed from the sealing hole, then the whole workpiece is lifted by the shell 12 to be completely demolded, which is not easy to wear, and further ensures the quality of the workpiece.

[0036] The sealing plate 15 comprises a top plate layer 18 and a bottom plate layer 17, the top plate layer 18 and the bottom plate layer 17 are both circular, and the diameter of the top plate layer 18 is smaller than that of the bottom plate layer 17, the top plate layer 18 is fixedly connected to the top of the bottom plate layer 17, and the axes of the top plate layer 18 and the bottom plate layer 17 are collinear.

[0037] The bottom plate layer 17 is fixedly connected with a sealing layer 19 outside the top.

[0038] The shell 12 is provided with a limiting ventilation hole 16 to prevent the shell 12 from being ejected out of the ejection groove 7.

[0039] Working principle: through the setting of the ejection groove 7 and the ejector pin assembly 5, the air pressure chamber 8 is inflated through the gas inlet pipe 6 during use, and the ejector pin assembly 5 is lifted to eject the workpiece from the forming cavity under the action of air pressure, so that the demolding is facilitated, the use is convenient, and the production efficiency is effectively improved.

[0040] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An intraocular lens forming mold facilitating demolding, comprising an upper mold (2), a lower mold (1), characterized in that: The upper die (2) and the lower die (1) are provided with crystal forming cavities (4), the lower die (1) is provided with a gas pressure chamber (8), the gas pressure chamber (8) and the crystal forming cavities (4) are vertically provided with ejection grooves (7), the top of the ejection grooves (7) and the crystal forming cavities (4) are communicated with each other, the bottom of the ejection grooves (7) and the gas pressure chamber (8) are communicated with each other, the ejection grooves (7) are provided with a top pin assembly (5) which can move up and down, one side of the gas pressure chamber (8) is fixedly connected with a gas pipe (6), and the other end of the gas pipe (6) is connected with a gas pump.

2. The intraocular lens molding mold facilitating demolding according to claim 1, characterized in that: The ejection grooves (7) are arranged at the outer edge of the central concave surface of the crystal forming cavities (4), and the diameter of the ejection grooves (7) is smaller than the width of the outer edge.

3. The intraocular lens molding mold facilitating demolding according to claim 2, characterized in that: The number of the ejection grooves (7) is not less than four, and the plurality of ejection grooves (7) are arranged at equal angles and take the central concave surface of the crystal forming cavities (4) as the center.

4. The intraocular lens molding mold facilitating demolding according to claim 1, characterized in that: The lower die (1) is fixedly connected with a positioning rod (3), and the upper die (2) is provided with a positioning hole matched with the positioning rod (3).

5. The intraocular lens molding mold facilitating demolding according to claim 1, characterized in that: The top pin assembly (5) comprises an outer shell (12), a cross plate (13), a spring (14), a long rod (11), a permanent magnet (10), an electromagnet (9) and a sealing plate (15), the outer shell (12) is arranged as a cylindrical shape with an open lower end, the outer shell (12) is piston-fitted in the ejection groove (7), the top end of the outer shell (12) is provided with a sealing hole matched with the sealing plate (15), the outer shell (12) is fixedly connected with the cross plate (13), the cross plate (13) is provided with a sliding hole matched with the long rod (11), the long rod (11) is slidingly fitted in the sliding hole, the top end of the long rod (11) is fixedly connected with the sealing plate (15), the bottom of the sealing plate (15) is fixedly connected with the spring (14), the bottom end of the spring (14) is fixedly connected with the cross plate (13), under the action of the spring (14), the sealing plate (15) completely covers the sealing hole, the bottom end of the long rod (11) extends into the gas pressure chamber (8) and is fixedly connected with the permanent magnet (10), and the bottom of the gas pressure chamber (8) is fixedly connected with the electromagnet (9).

6. The intraocular lens molding mold facilitating demolding according to claim 5, characterized in that: The sealing plate (15) comprises a top plate layer (18) and a bottom plate layer (17), both the top plate layer (18) and the bottom plate layer (17) are arranged as circular shapes, the diameter of the top plate layer (18) is smaller than that of the bottom plate layer (17), the top plate layer (18) is fixedly connected to the top of the bottom plate layer (17), and the axes of the top plate layer (18) and the bottom plate layer (17) are collinear.

7. The intraocular lens molding mold facilitating demolding according to claim 6, characterized in that: The top plate layer (18) is fixedly connected with a sealing layer (19) outside the top.

8. The intraocular lens molding mold facilitating demolding according to claim 5, characterized in that: The outer shell (12) is provided with a limiting ventilation hole (16) preventing the outer shell (12) from being taken out of the ejection groove (7).

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