CN210885781U

CN210885781U - Mould for manufacturing batch aspheric glass lens preform

Info

Publication number: CN210885781U
Application number: CN201921977942.XU
Authority: CN
Inventors: 袁超
Original assignee: Dongguan Harmony Optical Technology Co ltd
Current assignee: Dongguan Harmony Optical Technology Co ltd
Priority date: 2019-11-15
Filing date: 2019-11-15
Publication date: 2020-06-30
Anticipated expiration: 2029-11-15

Abstract

A mold for making a batch of aspheric glass lens preforms comprising: a plurality of mould benevolence (1), cope match-plate pattern (2), lower bolster (3) and chassis (4) are from last down arranging in proper order, the clearance has between cope match-plate pattern (2) and lower bolster (3), it is shown to combine picture (3) and picture (4), cope match-plate pattern (2) have a plurality of locating holes (21), lower bolster (3) have a plurality of shaping holes (31), mould benevolence (1) is from last locating hole (21) that down passes cope match-plate pattern (2) and form fixedly with locating hole (21), locating hole (21) of cope match-plate pattern (2) are just right with shaping hole (31) of lower bolster (3). The mold forms batch aspheric glass lens preform bodies in a one-time stamping forming mode, so that the size precision of the preform bodies can be guaranteed, the manufacturing efficiency of the preform bodies can be improved, and the requirement of batch rapid production is met.

Description

Mould for manufacturing batch aspheric glass lens preform

Technical Field

The utility model relates to a lens preform's mould especially relates to a mould of preparation aspheric surface glass lens preform in batches.

Background

In the process of manufacturing the lens, the plastic material (i.e. the preform) for manufacturing the lens is first made into a preform (usually a spherical body), and then the preform is placed in a forming mold for heating and compression molding. At present, there are two general preform manufacturing processes, the first is to grind the preform to form a spherical preform; the second is a dropping process, where the preform is heated to melt and dropped into a spherical mold.

However, for the grinding process, although the efficiency is high, errors exist in the grinding size and precision, and the quality of products is limited; for the dropping liquid process, although the precision is high, the efficiency is low, and the requirement of batch rapid production cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model discloses technical scheme is to above-mentioned condition, and in order to solve above-mentioned problem and provide a mould of preparation aspheric surface glass lens preforming body in batches, the mould includes: the die comprises a plurality of die cores, an upper die plate, a lower die plate and a chassis, wherein the upper die plate, the lower die plate and the chassis are sequentially arranged from top to bottom, a gap is formed between the upper die plate and the lower die plate, the upper die plate is provided with a plurality of positioning holes, the lower die plate is provided with a plurality of forming holes, the die cores penetrate through the positioning holes from top to bottom and are fixed with the positioning holes, and the positioning holes are right opposite to the forming holes.

Furthermore, the mold core is provided with a limiting section and a forming section, the limiting section and the forming section are both cylindrical, the outer diameter of the limiting section is larger than the outer diameter of the forming section, the outer diameter of the forming section is equal to the inner diameter of the positioning hole, and the lower end of the forming section is provided with a forming groove.

Further, the forming hole is in a shape of a circular truncated cone.

Further, the base plate is provided with a receiving groove which is positioned right below the forming holes.

Furthermore, the upper template is also provided with a forming guide hole and a discharging upper guide hole; the lower template is also provided with a forming guide groove and a discharging lower guide hole; the chassis is provided with a discharging guide groove; the mold further comprises: the forming guide post penetrates through the forming guide hole from top to bottom and is inserted into the forming guide groove; the discharging guide post penetrates through the discharging upper guide hole and the discharging lower guide hole from top to bottom and is inserted into the discharging guide groove.

After the technical scheme is adopted, the utility model discloses an effect is: the mould with the structure forms batch aspheric glass lens preform bodies in a one-time stamping forming mode, not only can ensure the size precision of the preform bodies, but also can improve the manufacturing efficiency of the preform bodies, and meets the requirement of batch rapid production.

Drawings

Fig. 1 is a schematic view of a mold according to the present invention;

FIG. 2 is a schematic view of a mold insert according to the present invention;

fig. 3 is a schematic view of an upper die plate according to the present invention;

fig. 4 is a schematic view of a lower template according to the present invention;

fig. 5 is a schematic view of a chassis according to the present invention.

Detailed Description

It is specifically noted that the terms "first", "second" and "third" in the present application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. All directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture, and if the specific posture is changed, the directional indicator is changed accordingly.

The technical solution of the present invention is further described below by way of examples:

the utility model provides a mould of preparation aspheric surface glass lens preforming body in batches, as shown in figure 1, the mould includes: a plurality of mould benevolence 1, cope match-plate pattern 2, lower bolster 3 and chassis 4 are from last down arranging in proper order, the clearance has between cope match-plate pattern 2 and the lower bolster 3, it is shown with fig. 3 and fig. 4 to combine, cope match-plate pattern 2 has a plurality of locating holes 21, lower bolster 3 has a plurality of shaping holes 31, mould benevolence 1 is from last down passing locating hole 21 of cope match-plate pattern 2 and forming fixedly with locating hole 21, the locating hole 21 of cope match-plate pattern 2 is just right with the shaping hole 31 of lower bolster 3. When the mold is used, the preform 100 is placed between the upper mold plate 2 and the lower mold plate 3, and then the upper mold plate 2 is urged to move downward, so as to drive the mold cores 1 to move downward, the preform 100 forms a plurality of lens preforms in the molding holes 31 under the punching operation of the plurality of mold cores 1, and the preforms fall onto the chassis 4.

Specifically, as shown in fig. 2, the mold core 1 has a limiting section 11 and a forming section 12, the limiting section 11 and the forming section 12 are both cylindrical, the outer diameter of the limiting section 11 is greater than the outer diameter of the forming section 12, the outer diameter of the forming section 12 is equal to the inner diameter of the positioning hole 21, and the lower end of the forming section 12 has a forming groove 13.

Specifically, the molding hole 31 has a circular truncated cone shape. When the die core 1 is punched, the forming hole 31 is matched with the forming groove 13, and the prefabricated part 100 is punched into the shape of a preformed body; after the punching is finished, the forming holes 31 in the shape of the circular truncated cone can prevent the preformed body from being clamped in the forming holes 31, and the preformed body can be ensured to smoothly drop on the chassis 4.

Specifically, the chassis 4 has a receiving groove 41, and the receiving groove 41 is located directly below the plurality of molding holes 31. After the preform is molded, the preform drops into the receiving groove 41, and the receiving groove 41 prevents the preform from rolling out of the mold.

Specifically, as shown in fig. 3, 4 and 5, the upper die plate 2 further has a forming guide hole 22 and a discharge upper guide hole 23; the lower template 3 is also provided with a forming guide groove 33 and a discharging lower guide hole 32; the chassis 4 also has a discharge guide chute 42; the mould still includes: the forming guide post 5 and the discharging guide post 6, wherein the forming guide post 5 penetrates through the forming guide hole 22 from top to bottom and is inserted into the forming guide groove 33; the discharge guide post 6 passes through the discharge upper guide hole 23 and the discharge lower guide hole 32 from above to below and is inserted into the discharge guide groove 42. Through the guide effect of shaping guide post 5 and guide post 6 of unloading, can guide the moving direction of cope match-plate pattern 2 and lower bolster 3 when punching press and the operation of unloading, avoid taking place the skew.

Therefore, the mold with the structure forms batch aspheric glass lens preform bodies in a one-time stamping forming mode, not only can ensure the size precision of the preform bodies, but also can improve the manufacturing efficiency of the preform bodies, and meets the requirement of batch rapid production.

The above-mentioned embodiments are merely preferred examples of the present invention, and do not limit the scope of the present invention, so all equivalent changes or modifications made by the structure, features and principles of the present invention should be included in the claims of the present invention.

Claims

1. The utility model provides a mould of preparation batch aspheric surface glass lens preforming body which characterized in that: the mold comprises: a plurality of mould benevolence (1), cope match-plate pattern (2), lower bolster (3) and chassis (4), cope match-plate pattern (2) lower bolster (3) with chassis (4) are from last down arranging in proper order, cope match-plate pattern (2) with the clearance has between lower bolster (3), cope match-plate pattern (2) have a plurality of locating holes (21), lower bolster (3) have a plurality of shaping holes (31), mould benevolence (1) is from last down passing locating hole (21) and with locating hole (21) form fixedly, locating hole (21) with shaping hole (31) are just right.

2. The mold for manufacturing a batch of aspheric glass lens preforms as claimed in claim 1, wherein: the die core (1) is provided with a limiting section (11) and a forming section (12), the limiting section (11) and the forming section (12) are cylindrical, the outer diameter of the limiting section (11) is larger than that of the forming section (12), the outer diameter of the forming section (12) is equal to that of the positioning hole (21), and the lower end of the forming section (12) is provided with a forming groove (13).

3. The mold for manufacturing a batch of aspheric glass lens preforms as claimed in claim 1, wherein: the forming hole (31) is in a circular truncated cone shape.

4. The mold for manufacturing a batch of aspheric glass lens preforms as claimed in claim 1, wherein: the chassis (4) is provided with a receiving groove (41), and the receiving groove (41) is positioned right below the forming holes (31).

5. The mold for manufacturing a batch of aspheric glass lens preforms as claimed in claim 1, wherein: the upper template (2) is also provided with a forming guide hole (22) and a discharging upper guide hole (23); the lower template (3) is also provided with a forming guide groove (33) and a discharging lower guide hole (32); the chassis (4) is provided with a discharging guide groove (42); the mold further comprises: a forming guide post (5) and a discharging guide post (6), wherein the forming guide post (5) penetrates through the forming guide hole (22) from top to bottom and is inserted into the forming guide groove (33); the discharging guide column (6) penetrates through the discharging upper guide hole (23) and the discharging lower guide hole (32) from top to bottom and is inserted into the discharging guide groove (42).