Contact lens liquid injection filling device

Abstract

The utility model relates to the technical field of automatic production of contact lenses, in particular to a liquid injection and filling device for contact lenses, which comprises a liquid injection needle group, a needle group module for driving the liquid injection needle group to move to a liquid injection position, a liquid injector component for extracting and injecting raw materials, and a constant-temperature bin for storing the raw materials, the injector assembly and the constant-temperature bin are both mounted on the liquid injection main frame; a liquid injection valve group is also mounted on the liquid injection main frame; the liquid injection needle group is communicated with the constant-temperature bin through the liquid injection valve group; according to the utility model, the whole structure is simple, the liquid injection needle group only completes the position change between the liquid injection station and the static station, the liquid pumping and injection actions of raw materials are realized by the liquid injector assembly, and the liquid injection and filling actions integrating pumping and injection are completed through the liquid injection valve group; redundant actions of the liquid injection needle group are avoided, the multi-hole liquid injection filling efficiency is improved, and the overall production and processing quality of the contact lenses is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to contact lens automation production technical field, specifically is a contact lens liquid filling device. BACKGROUND

[0002] Contact lenses are becoming more and more popular due to their role in vision correction and beautification;

[0003] At present, the mold pressing forming method is a new contact lens forming process. In the process of preparing contact lenses by the existing mold pressing forming method, liquid materials such as high molecular polymers are often used; the liquid injection is an important part of the process of preparing contact lenses by the mold pressing forming method, and the liquid injection process also realizes partial automation. However, in the conventional automatic equipment, the specific action of the raw material is also separated from the injection and suction, the overall liquid injection operation is complex, faults are easy to occur, the liquid injection precision is not good, and the upper and lower molds are not concentric during the mold closing process, which is not horizontal, resulting in the thickness of the lens, affecting the quality of the finished contact lenses; the pressing process is not stable, the bubbles in the mold are not completely removed, which can easily lead to a high bubble rate of the lens, and also affects the qualification rate of the lens. SUMMARY

[0004] The utility model aims at providing a liquid filling device with injection and suction combination, simple action, multi-hole synchronization and stable operation.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme.

[0006] A contact lens liquid filling device, comprising a liquid injection needle group, a needle group module for driving the liquid injection needle group to move to a liquid injection position, a liquid injector assembly for extracting and injecting the raw material, and a constant temperature bin for storing the raw material; the liquid injector assembly and the constant temperature bin are both installed on the liquid injection main frame; the liquid injection main frame is also provided with a liquid injection valve group for switching the extraction and injection action; the liquid injection valve group communicates the liquid injection needle group with the constant temperature bin;

[0007] During the liquid filling process, when the liquid extraction action is performed, the liquid injection valve group is in the liquid extraction state, and after the raw material is extracted from the constant temperature bin by the liquid injector assembly, when the liquid injection action is performed, the liquid injection valve group is switched to the liquid injection state, the needle group module drives the liquid injection needle group to the liquid injection position, and the liquid injector assembly pushes the raw material into the liquid injection needle group and fills it into the mold in the jig assembly.

[0008] Further, the liquid injection needle group is connected to the liquid injection valve group by a liquid injection hose; the liquid injection needle group is installed at the execution end of the needle group module, and the needle group module is installed at the side of the liquid injection main frame by a liquid injection side frame;

[0009] Further, the needle group module comprises a needle group forward driving device installed on the liquid injection side frame, a displacement adjustment table installed at the execution end of the needle group forward driving device, and a needle group downward driving device installed at the execution end of the displacement adjustment table.

[0010] Further, the execution end of the needle group downward driving device is installed with a needle group mounting plate; and a plurality of liquid injection needles are installed on the needle group mounting plate to form a liquid injection needle group.

[0011] Further, a liquid leakage collection bucket is installed below the liquid injection needle group.

[0012] Compared with the prior art, the present application has the following advantages:

[0013] In actual use, the jig assembly is transported to the liquid injection station by an external turnover device, and the jig assembly is placed with a contact lens mold to be filled; the liquid injector assembly performs the extraction and liquid injection filling actions; during the liquid extraction action, the liquid injection valve group is in the liquid extraction mode, and the liquid injector assembly extracts the raw material from the constant temperature bin and temporarily stores it; the constant temperature bin is a small constant temperature refrigerator; during the liquid injection action, the liquid injection valve group is switched to the liquid injection mode, the needle group module drives the liquid injection needle group to move above the jig assembly, and the liquid injector assembly pushes the raw material into the liquid injection needle group to complete the liquid injection filling action;

[0014] The contact lens liquid injection filling device has a compact overall structure, the liquid injection needle group only changes the position between the liquid injection station and the stationary station, the liquid extraction and injection actions of the raw material are realized by the liquid injector assembly, and the liquid injection filling action of the extraction and injection is completed by the liquid injection valve group; the liquid injection needle group is prevented from performing redundant actions, the efficiency of multi-hole liquid injection filling is improved, and the overall production and processing quality of the contact lens is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is an overall structural schematic view of the present application;

[0016] Fig. 2 It is a local enlarged schematic view of A in the present application;

[0017] Fig. 3 It is a rear view of the present application. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0019] REFERENCE Figs. 1-3As shown, a contact lens liquid filling device includes a liquid injection needle group 410, a needle group module 420 for driving the liquid injection needle group 410 to move to a liquid injection position, a liquid injector assembly 460 for extracting and injecting raw materials, and a constant temperature warehouse 430 for storing raw materials; the liquid injector assembly 460 and the constant temperature warehouse 430 are both mounted on a liquid injection main frame 470; the liquid injection main frame 470 is also provided with a liquid injection valve group 450 for switching the extraction and injection actions; the liquid injection valve group 450 is in communication with the liquid injection needle group 410 and the constant temperature warehouse 430.

[0020] During the liquid filling process, the liquid injection valve group 450 is a reversible three-way valve group, the liquid injector assembly 460 performs the extraction and injection actions of the raw materials, during the extraction action, the liquid injection valve group 450 is in the extraction state, after the liquid injector assembly 460 extracts the raw materials from the constant temperature warehouse 430, during the injection action, the liquid injection valve group 450 is switched to the injection state, the needle group module 420 drives the liquid injection needle group 410 to the liquid injection position, and the liquid injector assembly 460 pushes the raw materials into the liquid injection needle group 410 to fill the mold in the jig assembly 300.

[0021] In actual use, the jig assembly 300 is transported to the liquid injection station by an external turnover device, and the contact lens mold to be filled is placed in the jig assembly 300; the liquid injector assembly 460 performs the extraction and injection actions of the raw materials, during the extraction action, the liquid injection valve group 450 is in the extraction mode, the liquid injector assembly 460 extracts the raw materials from the constant temperature warehouse 430 and temporarily stores them, and the constant temperature warehouse 430 is a small constant temperature refrigerator; during the injection action, the liquid injection valve group 450 is switched to the injection mode, the liquid injection needle group 410 is driven by the needle group module 420 to move above the jig assembly 300, and the liquid injector assembly 460 pushes the raw materials into the liquid injection needle group 410 to complete the filling injection action;

[0022] The contact lens liquid filling device has a compact overall structure, the liquid injection needle group 410 only changes positions between the liquid injection station and the stationary station, the extraction and injection actions of the raw materials are realized by the liquid injector assembly 460, and the extraction and injection integrated liquid filling action is completed by the liquid injection valve group; the liquid injection needle group is prevented from performing redundant actions, the efficiency of multi-hole liquid filling is improved, and the overall production and processing quality of the contact lens is improved.

[0023] In the embodiment, the liquid injection needle group 410 is connected to the liquid injection valve group 450 by a liquid injection hose 411; the liquid injection needle group 410 is mounted on the execution end of the needle group module 420, the needle group module 420 is mounted on the side of the liquid injection main frame 470 by a liquid injection side frame 412; the liquid injection valve group 450 is in communication with the liquid injection needle group 410 and the constant temperature warehouse 430, and the needle group module 420 is mounted on the side of the liquid injection main frame 470, so that the overall layout is compact and redundant action strokes are avoided.

[0024] In the embodiment, the needle group module 420 comprises a needle group forward driving 421 installed on the liquid injection side frame 412, a displacement adjustment table 422 installed at the execution end of the needle group forward driving 421, and a needle group downward driving 423 installed at the execution end of the displacement adjustment table 422; the needle group forward driving 421 is a linear module, and the needle group downward driving 423 is a cylinder; the needle group forward driving 421 is used to drive the needle group downward driving 423 to move above the jig assembly 300, and the needle group downward driving 423 drives the needle group module 420 to inject liquid; the displacement adjustment table 422 between the needle group forward driving 421 and the needle group downward driving 423 is manually adjusted, so that the accurate position of the execution end can be adjusted, and the quality problem caused by error can be avoided.

[0025] In the embodiment, the execution end of the needle group downward driving 423 is installed with a needle group mounting plate 424; a plurality of liquid injection needles are installed on the needle group mounting plate 424 to form the liquid injection needle group 410; when the number of injection needles needs to be adjusted, only the corresponding needle group mounting plate 424 needs to be replaced, so that the equipment adjustment and debugging can be quickly realized, and more types of contact lenses related jigs can be adapted.

[0026] In the embodiment, the liquid injection needle group 410 is further installed with a liquid leakage collection bucket 480 below; after the liquid injection is completed, the liquid injection needle group 410 is driven by the needle group module 420 to return to the initial static position, and the liquid leakage collection bucket 480 can prevent the residual raw materials of the needle from splashing.

[0027] The specific embodiments described herein are merely illustrative of the spirit of the utility model. Those skilled in the art to which the utility model belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the range defined by the spirit of the utility model.

Claims

1. A contact lens liquid injection filling device, characterized by, The injection needle group (410), the needle group module (420) driving the injection needle group (410) to move to the injection position, the injection device assembly (460) extracting and injecting the raw material, and the constant temperature warehouse (430) for storing the raw material; the injection device assembly (460) and the constant temperature warehouse (430) are installed on the injection main frame (470); the injection main frame (470) is also installed with the injection valve group (450); the injection valve group (450) communicates the injection needle group (410) with the constant temperature warehouse (430); During the injection filling process, when the liquid is extracted, the injection valve group (450) is in the liquid extraction state, and after the injection device assembly (460) extracts the raw material from the constant temperature warehouse (430), when the injection is performed, the injection valve group (450) is switched to the injection state, the needle group module (420) drives the injection needle group (410) to the injection position, and the injection device assembly (460) pushes the raw material into the injection needle group (410) to fill the mold in the jig assembly (300).

2. The device of claim 1, wherein the device is a contact lens liquid filling device. The injection needle group (410) is connected with the injection valve group (450) through the injection hose (411); the injection needle group (410) is installed on the execution end of the needle group module (420), and the needle group module (420) is installed on the side of the injection main frame (470) through the injection side frame (412).

3. A device for filling contact lenses with a liquid according to claim 2, characterized in that The needle group module (420) includes the needle group forward driving (421) installed on the injection side frame (412), the displacement adjustment table (422) installed on the execution end of the needle group forward driving (421), and the needle group downward driving (423) installed on the execution end of the displacement adjustment table (422).

4. The device of claim 3, wherein the device is a contact lens liquid filling device. The execution end of the needle group downward driving (423) is installed with the needle group mounting plate (424); a plurality of injection needles are installed on the needle group mounting plate (424) to form the injection needle group (410).

5. The device of claim 1, wherein the device is a contact lens liquid filling device. The injection needle group (410) is also installed with the liquid leakage collection bucket (480) below.

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