CN104890188A - Spectacle lens mirror surface injection molding structure and its mold - Google Patents

Abstract

The invention provides an eyeglass lens mirror surface injection molding pouring structure and a mold thereof, wherein the eyeglass lens mirror surface injection molding pouring structure comprises a cavity insert, a cavity runner insert, a core runner insert, a secondary main runner material pulling rod, a secondary side sprue material pulling rod, a filling tail end material pulling rod, a secondary side sprue channel, a primary point sprue channel and a three-plate mold frame; by adopting the pouring structure and the mold thereof provided by the technical scheme, when the spectacle lens is a resin lens and is molded, the special optical performance requirement that the flow direction of injection molecules of the resin lens is the same direction can be effectively ensured, the automatic molding production of spectacle resin lens products can be completed, the product molding quality is effectively ensured, and the mold has the advantages of reasonable structural design, compact structure, stable operation, safety, reliability and convenience in use.

Description

Spectacle lens mirror surface injection molding structure and its mold

technical field

The invention relates to the field of mechanism design of an injection mold, in particular to an injection molding structure for spectacle lens mirror surface and a mold thereof.

Background technique

As shown in Figure 1, when the spectacle lens is made of resin lens and its forming is molded, in order to ensure that the injection flow molecules are oriented in the same direction for special optical performance requirements, the single side gate feeding method and the mold must be adopted. Complete the automatic injection molding production of the product.

Contents of the invention

The technical problem to be solved by the present invention is to provide a spectacle lens mirror surface injection molding structure and its mold, which are reasonable in design, compact in structure, stable in operation, safe and reliable, and easy to use; in order to solve the above-mentioned existing technical problems, the present invention adopts the following scheme : A spectacle lens mirror injection molding structure and mold thereof, including cavity inserts, cavity flow channel inserts, core inserts, core flow channel inserts, secondary main channel pull rods, secondary side pouring Pull rod at the gate, pull rod at the end of filling, secondary side gate runner, primary point gate runner, three-plate formwork.

As a preference, the injection molding structure of the mold is composed of secondary side gate runners and primary point gate runners.

As a preference, the mold forming part is composed of a cavity insert and a core insert.

As a preference, the secondary side gate flow channel of the mold is formed by the cavity insert and the cavity flow channel insert to form a semicircular flow channel, and the core insert and the core flow channel insert set up a semicircle The runners are combined; the flow direction of the spliced secondary side gate runner is arc-shaped; the secondary side gate runner is provided with a secondary main channel pulling rod under the main channel of the secondary side gate, and the side gate is equipped with Secondary side gate pulling rod, the filling end of the cavity is equipped with a filling end pulling rod.

Preferably, the mold formwork structure is a common three-plate mold structure of a three-plate formwork, including an upper mold seat plate, a stripper plate, a cavity fixing plate, a core fixing plate, a thimble cover plate, a thimble push plate, and a lower mold base Plate, support column, reset lever, reset lever spring, three-plate mold sequential mold opening control mechanism.

Beneficial effects: the present invention adopts the spectacle lens mirror surface injection molding structure and its mold provided by the above technical scheme. When the spectacle lens is made of resin lens and molded, it can effectively ensure that the injection molecular flow direction is the same direction as the special optical lens. Performance requirements, the automatic molding production of the above glasses resin lens products can be realized with a simple mold structure, which effectively guarantees the product molding quality, reduces the cost of mold production and product injection molding; the mold structure design is reasonable, the structure is compact, and the work is stable , Safe and reliable, easy to use.

Description of drawings

Fig. 1 is a schematic diagram of a spectacle lens mirror surface injection molding casting structure and its mold application object product of the present invention;

Fig. 2 is a kind of spectacle lens mirror surface injection casting structure and its mold structure composition schematic diagram of the present invention;

Fig. 3 is a kind of spectacle lens mirror surface injection molding pouring structure of the present invention and the schematic diagram of mold cavity runner assembly thereof;

Fig. 4 is the schematic diagram of a spectacle lens mirror surface injection molding casting structure and mold core runner assembly thereof of the present invention;

Fig. 5 is a schematic plan view of a spectacle lens mirror surface injection molding structure and a mold movable mold thereof of the present invention;

Fig. 6 is a kind of spectacle lens mirror surface injection molding pouring structure of the present invention and its die-fixed schematic diagram looking up;

Fig. 7 is a partial cross-sectional schematic view of a spectacle lens mirror surface injection molding structure and its mold according to the present invention.

Detailed ways

Fig. 1-7 shows relevant explanatory diagrams of the present invention; A spectacle lens mirror injection molding structure and mold thereof, including a cavity insert 1, a cavity flow channel insert 2, a core insert 3, and a core flow channel Insert 4, secondary main channel pulling rod 5, secondary side gate pulling rod 6, filling end pulling rod 7, secondary side gate runner 8, primary point gate runner 9, three-plate formwork 10, as shown in Figure 2.

The mold injection molding structure is composed of secondary side gate runner 8 and primary point gate runner 9.

The mold forming part is composed of a cavity insert 1 and a core insert 3, as shown in Figure 2.

The gate runner 8 on the secondary side of the mold is inlaid with the cavity insert 1 and the cavity runner insert 2 to form a semicircular runner, and the core insert 3 and the core runner insert 4 are opened in a semicircular shape. The circular runners are combined, and the flow direction of the spliced secondary side gate runner 8 is arc-shaped, as shown in Figure 3 and Figure 4; there are two secondary side gate runners below the main channel Secondary sprue pull rod 5, secondary side gate pull rod 6 is provided at the side gate, and filling end pull rod 7 is installed at the end of cavity filling, as shown in FIG. 2 .

The mold frame structure is a three-plate mold frame 10, which is a common three-plate mold structure, including an upper mold seat plate, a stripper plate, a cavity fixing plate, a core fixing plate, a thimble cover plate, a thimble push plate, and a lower mold seat plate , support column, reset lever, reset lever spring, three-plate mold sequential mold opening control mechanism, as shown in Figure 5, Figure 6, and Figure 7.

In actual work, the working principle is as follows:

The mold pouring runner system is composed of the secondary side gate runner 8 and the primary point gate runner 9. The product gate adopts the single-side single-side fan gate method, and the material flows into the mold through the primary point gate runner 9. Finally, the secondary side gate runner 8 is introduced into the mold cavity through the single fan gate; the gating system method combined with the secondary runner is convenient for the automatic removal of most runner waste, and the secondary side gate runner The secondary side trimming process adopts the secondary side gate runner 8 and the fan-shaped side gate method to ensure the single direction of molecular flow during filling, so as to ensure its optical performance after forming; the secondary side gate runner 8 There are cold slug wells and their corresponding pull rods directly below the main channel, directly below the front of the gate inlet, and directly below the cavity filling end. 5. Secondary side gate pull rods 6. Fill the end pull rod 7 to ensure that the product does not have any front peak cold material resident inside the product; after injection molding, the working condition of the mold is, after the mold is opened, the secondary side gate runner 8, the primary point gate runner 9 is separated first, and then the one-point gate runner 9 is ejected by the mold runner plate; then the mold cavity is opened, the product is ejected, and the opening and closing sequence of the template is controlled by the three-plate mold sequential mold opening control mechanism of the mold.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention, and those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or replace them in similar ways, but It does not depart from the spirit of the invention or go beyond the scope defined by the appended claims.

Claims (5)

1. A spectacle lens mirror surface injection molding structure and its mold, including a cavity insert (1), a cavity flow channel insert (2), a core insert (3), and a core flow channel insert (4) , secondary main channel pull rod (5), secondary side gate pull rod (6), filling end pull rod (7), secondary side gate runner (8), primary point gate runner (9), three-plate formwork (10). 2. A spectacle lens mirror surface injection molding structure and its mold according to claim 1, wherein the mold injection molding structure is composed of a secondary side gate runner (8) and a primary point gate runner (9). 3. According to claim 1, an spectacle lens mirror surface injection molding structure and its mold, the mold forming part is composed of a cavity insert (1) and a core insert (3). 4. According to claim 1, a spectacle lens mirror surface injection molding structure and its mold, the secondary side gate runner (8) of the mold is inlaid by the cavity insert (1) and the cavity runner insert (2) After connecting, a semicircular runner is opened, and the core insert (3) and the core runner insert (4) are combined to open a semicircular runner; the spliced secondary side gate runner (8) flows The direction is arc-shaped; the secondary side gate runner (8) is equipped with a secondary main channel pulling rod (5) under the main channel, and the side gate is equipped with a secondary side gate pulling rod (6) , The filling end of the mold cavity is provided with a filling rod (7) at the end of filling. 5. According to claim 1, a spectacle lens mirror surface injection molding casting structure and its mold, the mold frame structure is a three-plate mold frame (10) common three-plate mold structure, including an upper mold seat plate, a stripping plate, and a fixed cavity Plate, core fixing plate, thimble cover plate, thimble push plate, lower mold seat plate, support column, reset lever, reset lever spring, three-plate mold sequential mold opening control mechanism.