CN210910863U

CN210910863U - Die sinking tool of hot pressing plastic lens mould

Info

Publication number: CN210910863U
Application number: CN201921978103.XU
Authority: CN
Inventors: 曹必豹; 陈文通
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: 2020-07-03
Anticipated expiration: 2029-11-15

Abstract

The utility model provides a die sinking tool of hot pressing plastic lens mould, includes: the mould opening device comprises a top plate (31), a bottom plate (32), a mould opening insert pin (33) and four supporting columns (34), wherein the bottom plate (32) is fixed on the top plate (31) and extends to the lower part of the top plate (31), the supporting columns (34) are fixed on the bottom plate (32) and extend to the upper part of the bottom plate (32), and the four supporting columns (34) are arranged in a rectangular array mode. Above-mentioned die sinking tool can swiftly accomplish the die sinking operation between master model and the two sets of public moulds, can guarantee the effective joint between master model and the public mould moreover, not only provides the guarantee for the lens quality, has improved the production efficiency of lens moreover.

Description

Die sinking tool of hot pressing plastic lens mould

Technical Field

The utility model relates to a die sinking tool especially relates to a die sinking tool of hot pressing plastic lens mould.

Background

Some optical lenses are subjected to glue injection hot press molding by using a molding die. In order to achieve a specific imaging effect, the conventional plastic lenses need to be injection-molded with two different plastic materials. At present, for lenses with two different plastic materials, two sets of molds are usually used for injection molding twice in the manufacturing process.

In order to solve the problem that when the lens is transferred from one set of mold to the other set of mold, position deviation occurs, the two-time glue injection hot press molding can be carried out in a mode that one set of female mold is matched with two sets of male molds. However, how to ensure that the two sets of male molds are effectively jointed with the female mold when being replaced and how to make the mold opening process more convenient and fast avoids influencing the production efficiency of the lens, which becomes a technical problem to be solved in the current lens production.

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 die sinking tool of hot pressing plastic lens mould, the die sinking tool includes: the bottom plate is fixed on the top plate and extends to the lower portion of the top plate, the supporting columns are fixed on the bottom plate and extend to the upper portion of the bottom plate, and the four supporting columns are arranged in a rectangular array mode.

Furthermore, the number of the die sinking insert pins is four, and the four die sinking insert pins are arranged in a rectangular array mode.

Further, the mold opening insert pin includes: the positioning head and the needle body, the needle body is followed the lower surface of positioning head down extends, the needle body is the cylinder shape, the minimum width of positioning head is greater than the diameter of needle body, the needle body is fixed in the roof.

Furthermore, the inner side face of the support column is a plane, the outer side face of the support column is an arc face, and the bottom plate is cylindrical.

Further, the top plate has a holding side surface, and the holding side surface is a plane.

After the technical scheme is adopted, the utility model discloses an effect is: the die sinking tool that has above-mentioned structure can swiftly accomplish the die sinking operation between master model and two sets of public moulds, can guarantee the effective joint between master model and the public mould moreover, not only provides the guarantee for the lens quality, has improved the production efficiency of lens moreover.

Drawings

Fig. 1 is an exploded view of a mold assembly according to the present invention;

FIG. 2 is a half-sectional view of a female mold according to the present invention;

fig. 3 is a half sectional view of a first male mold according to the present invention;

fig. 4 is a cross-sectional view of the female mold core and the ejector mechanism according to the present invention;

fig. 5 is a schematic view of the mold opening jig according to the present invention;

fig. 6 is a schematic view of the use state of the mold opening jig according to the present invention;

fig. 7 is a sectional view of the use state of the mold opening jig 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 die sinking tool of hot pressing plastic lens mould, as shown in figure 1, the mould subassembly includes: a female die 1, a first male die 2a and a second male die 2b, wherein the female die 1 can be selectively jointed with the first male die 2a or the second male die 2 b. In the process of injecting glue and hot-pressing the lens, firstly, the female die 1 is jointed with the first male die 2a to carry out glue injection and hot-pressing molding on the first plastic material of the lens, the first male die 2a is removed after molding, then, the female die 1 is jointed with the second male die 2b to carry out glue injection and hot-pressing molding on the second plastic material of the lens, and finally, the lens is taken out.

As shown in fig. 2, the master mold 1 includes: the upper base plate 11 and the upper positioning plate 12 are arranged from top to bottom and are fixed, the die opening pressing block 13 can be arranged in the upper positioning plate 12 in a vertically moving mode, the upper base plate 11 is provided with a die opening hole 110, the die opening hole 110 is opposite to the die opening pressing block 13, the cavity 14 is located in the upper positioning plate 12, and the lower surface of the cavity 14 is provided with a cavity forming groove 140. As shown in fig. 3, the first male mold 2a and the second male mold 2b each include: the lower base plate 21 and the lower positioning plate 22 are arranged from bottom to top and fixed, the ejection mechanism 15 extends from the lower positioning plate 22 to the upper side of the lower positioning plate 22, the core 24 is located in the lower positioning plate 22, and the upper surface of the core 24 is provided with a core forming groove 240. When the female die 1 is jointed with the first male die 2a or the second male die 2b, the upper positioning plate 12 is jointed with the lower positioning plate 22, the die sinking pressing block 13 is contacted with the die sinking bolt 23, and the female forming groove 140 is opposite to the male forming groove 240. The depth of the male forming groove 240 of the second male die 2b is greater than the depth of the male forming groove 240 of the first male die 2 a. During the injection process, the plastic liquid enters between the cavity 14 and the core 24 to form the lens. After the injection is cooled, the mold opening pressing block 13 can be pushed through the mold opening hole 110, so that the female mold 1 is separated from the first male mold 2a or the second male mold 2b, and the mold opening operation is realized.

Specifically, in the present invention, the number of the cavity insert 14 of the female mold 1, the number of the core insert 24 of the first core mold 2a, and the number of the core insert 24 of the second core mold 2b are eight. The mould subassembly can realize the injecting glue hot briquetting operation of eight stations, further improves the production efficiency of lens.

Specifically, the master model 1 further includes: as shown in fig. 4, the ejection mechanism 15 includes: the upper fixing plate 151 is located in the upper base plate 11, the lower fixing plate 152 is located in the upper positioning plate 12, the upper fixing plate 151 and the lower fixing plate 152 are arranged from top to bottom and fixed, the cavity insert 14 and the lower fixing plate 152 are fixed, the thimble 153 extends from the top of the upper fixing plate 151 to the top of the female molding groove 140, the sidewall of the thimble 153 has a collar 1530, the upper end of the thimble spring 154 abuts against the collar 1530, and the lower end abuts against the lower fixing plate 152. After the lens is molded, the ejector pin 153 can be pushed to make the ejector pin 153 enter the female molding groove 140 and eject the lens, which replaces the operation of taking the lens by hand, further improving the efficiency.

Specifically, the master model 1 further includes: guide posts 16, the guide posts 16 extending from the upper base plate 11 to below the upper positioning plate 12; both the first male die 2a and the second male die 2b further comprise: a guide hole 25, the guide hole 25 being recessed from the upper surface of the lower positioning plate 22; when the female mold half 1 is engaged with the first male mold half 2a or the second male mold half 2b, the guide posts 16 are inserted into the guide holes 25. The guide posts 16 are matched with the guide holes 25 to guide the first male die 2a and the second male die 2b to move, so that the die opening operation is more stable.

Specifically, the master model 1 further includes: and a mold opening spring 17, wherein the upper end of the mold opening spring 17 is abutted against the upper substrate 11, and the lower end is abutted against the mold opening press block 13. The elasticity of the die opening spring 17 is matched with the thrust force during die opening, so that the first male die 2a or the second male die 2b can be effectively ejected, and the problem of die opening failure is avoided.

As shown in fig. 5, the mold opening jig 3 includes: the mold comprises a top plate 31, a bottom plate 32, mold opening insert pins 33 and four support columns 34, wherein the bottom plate 32 is fixed on the top plate 31 and extends to the lower part of the top plate 31, the support columns 34 are fixed on the bottom plate 32 and extend to the upper part of the bottom plate 32, and the four support columns 34 are arranged in a rectangular array mode.

As shown in fig. 6, the side of the female die 1 is provided with screws, when the mold opening jig 3 is used, the mold is placed between the four supporting columns 34, the screws on the side of the female die 1 are placed at the upper ends of the supporting columns 34, the four supporting columns 34 are respectively contacted with the four sides of the upper positioning plate 12, and simultaneously the four supporting columns 34 are also respectively contacted with the four sides of the lower positioning plate 22, so that the mold is fixed; then inserting the mold opening insert pin 33 into the mold opening hole 110, and pushing the mold opening press block 13 and the mold opening plug pin 23 to move, so that the female mold 1 is separated from the first male mold 2a or the second male mold 2b, and the bottom plate 32 receives the separated male mold; then the female mold 1 is taken out together with the top plate 31 and the mold opening insert pin 33, and finally the male mold replacement or the unloading operation is performed. When the male mold is replaced, the first male mold 2a is only required to be taken out from among the four supporting columns 34, the second male mold 2b is arranged among the four supporting columns 34, and finally the female mold 1 is jointed with the second male mold 2b, so that the four supporting columns 34 can play a role in guiding in the process, and the second male mold 2b is effectively jointed with the female mold 1.

Specifically, the number of the mold opening pins 33 is four, and the four mold opening pins 33 are arranged in a rectangular array. The number of the die opening holes 110, the number of the die opening pressing blocks 13 and the number of the die opening bolts 23 are four, the four die opening pressing blocks 13 are respectively pushed through the four die opening insert pins 33, the pushing force can be more balanced, and therefore the die opening process is more stable.

Specifically, as shown in fig. 7, the mold opening insert pin 33 includes: the positioning head 331 and the needle body 332, the needle body 332 extends downwards from the lower surface of the positioning head 331, the needle body 332 is in a cylindrical shape, the minimum width of the positioning head 331 is larger than the diameter of the needle body 332, and the needle body 332 is fixed in the top plate 31. The positioning head 331 can prevent the needle body 332 from breaking.

More specifically, the top plate 31 and the mold opening insert pin 33 are locked by screws; the mold opening insert pin 33 is locked with the support pillar 34 by a screw.

Specifically, the inner side 341 of the support pillar 34 is a plane, the outer side 342 is an arc surface, and the bottom plate 32 is in a cylindrical shape. The inner side 341 is adapted to be in contact with a mold, and the inner side 341 arranged as a plane has a better positioning effect. The outer side surface 342 is set to be an arc surface, so that the space occupied by the supporting column 34 can be reduced, and the mold opening jig 3 is favorably miniaturized.

Specifically, with continued reference to fig. 5, the top plate 31 has a gripping side 310, and the gripping side 310 is a flat surface. The planar gripping side 310 facilitates the user to take the top plate 31, and reduces the possibility of the top plate 31 falling off due to the sliding of the hand.

Therefore, the mold opening jig with the structure can quickly complete the mold opening operation between the female mold and the two sets of male molds, can ensure the effective connection between the female mold and the male molds, not only provides guarantee for the quality of lenses, but also improves the production efficiency of the lenses.

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 die sinking tool of hot pressing plastic lens mould which characterized in that: the die sinking tool (3) comprises: the mould comprises a top plate (31), a bottom plate (32), mould opening insert pins (33) and four supporting columns (34), wherein the bottom plate (32) is fixed on the top plate (31) and extends to the lower part of the top plate (31), the supporting columns (34) are fixed on the bottom plate (32) and extend to the upper part of the bottom plate (32), and the four supporting columns (34) are arranged in a rectangular array mode.

2. The mold opening jig for the hot-press plastic lens mold according to claim 1, characterized in that: the number of the die sinking insert pins (33) is four, and the four die sinking insert pins (33) are arranged in a rectangular array mode.

3. The mold opening jig for the hot-press plastic lens mold according to claim 1, characterized in that: the mold opening insert pin (33) comprises: the locating head comprises a locating head (331) and a needle body (332), wherein the needle body (332) extends downwards from the lower surface of the locating head (331), the needle body (332) is in a cylindrical shape, the minimum width of the locating head (331) is larger than the diameter of the needle body (332), and the needle body (332) is fixed in the top plate (31).

4. The mold opening jig for the hot-press plastic lens mold according to claim 1, characterized in that: the inner side surface (341) of the supporting column (34) is a plane, the outer side surface (342) is an arc surface, and the bottom plate (32) is cylindrical.

5. The mold opening jig for the hot-press plastic lens mold according to claim 1, characterized in that: the top plate (31) is provided with a holding side surface (310), and the holding side surface (310) is a plane.