CN210910865U

CN210910865U - Ejection jig for hot-pressing plastic lens mold

Info

Publication number: CN210910865U
Application number: CN201921973561.4U
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 an ejecting tool that hot pressing plastic lens mould was used, includes: the supporting plate (41), the supporting column (42), the supporting arm (43), the lifting block (44) and the pushing block (45), the supporting column (42) is located on the supporting plate (41) and extends upwards from the upper surface of the supporting plate (41), the rear end of the supporting arm (43) is fixed to the upper end of the supporting column (42), the lifting block (44) can be arranged at the front end of the supporting arm (43) in a vertically moving mode, the pushing block (45) is fixed to the lower end of the lifting block (44), and the upper surface of the supporting plate (41) is provided with an ejection boss (411). The ejection die can be conveniently taken out of the lens by a worker, and the female die does not need to be provided with an ejector plate, so that the heat conduction efficiency is improved, and the production efficiency of the lens is greatly improved.

Description

Ejection jig for hot-pressing plastic lens mold

Technical Field

The utility model relates to an ejecting tool especially relates to an ejecting tool that hot pressing plastic lens mould was used.

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 of position deviation when the lens is transferred from one set of the mold to the other set of the mold, the two-time glue injection hot press molding can be carried out in a mode that one set of the female mold is matched with two sets of the male molds, and finally the lens is ejected by using the ejector pin plate on the female mold.

However, in the process of manufacturing the lens in the above manner, since the male mold is replaced, the heat required for the second hot pressing needs to be conducted again, which affects the production efficiency of the lens.

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 an ejecting tool that hot pressing plastic lens mould was used, ejecting tool includes: backup pad, pillar, support arm, lifter block and ejector pad, the pillar is located in the backup pad and follow the upper surface of backup pad up extends, the rear end of support arm with the upper end of pillar forms fixedly, the lifter block can be followed and set up with moving from top to bottom the front end of support arm, the ejector pad is fixed the lower extreme of lifter block, the upper surface of backup pad has ejecting boss.

Further, the upper surface of backup pad still has the bearing spring, the lower extreme of bearing spring is fixed in the backup pad.

Further, the upper surface of the supporting plate is also provided with a guide rod, and the lower end of the guide rod is fixed in the supporting plate.

Furthermore, the number of the guide rods is four, and the four guide rods are arranged in a rectangular array mode.

Further, the support plate is also provided with a rotating shaft, the lower end of the support column is provided with a rotating groove, and the rotating shaft is inserted into the rotating groove.

Furthermore, the front end of the supporting arm is provided with an ejection screw hole, the lifting block is provided with external threads, and the lifting block is meshed with the ejection screw hole.

Further, the rear end of support arm has positioning hole, the upper end of pillar has the thread groove, ejecting tool still includes: a set screw passing through the set through hole and engaging with the threaded groove.

Further, the rear end of support arm has directional screw, ejecting tool still includes: the directional screw is meshed with the directional screw hole, and the lower end of the directional screw is in contact with the upper end of the strut.

After the technical scheme is adopted, the utility model discloses an effect is: the ejection die with the structure can not only facilitate a worker to take out a lens, but also avoid arranging an ejector plate on a female die, thereby improving the heat conduction efficiency and greatly improving the production efficiency of the lens.

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 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 an ejection jig according to the present invention;

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

fig. 7 is a half sectional view of the use state of the ejection 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 an ejecting tool that hot pressing plastic lens mould was used, as shown in fig. 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 ejection jig 4 includes: the lifting device comprises a supporting plate 41, a supporting column 42, a supporting arm 43, a lifting block 44 and a pushing block 45, wherein the supporting column 42 is positioned on the supporting plate 41 and extends upwards from the upper surface of the supporting plate 41, the rear end of the supporting arm 43 is fixed with the upper end of the supporting column 42, the lifting block 44 is movably arranged at the front end of the supporting arm 43 along the vertical direction, the pushing block 45 is fixed at the lower end of the lifting block 44, and the upper surface of the supporting plate 41 is provided with an ejecting boss 411.

Referring to fig. 6 and 7, when the ejecting jig 4 is used, the female mold 1 is turned over and then placed on the supporting plate 41, the ejecting boss 411 is opposite to the ejector pin 153 in the female mold 1, the lifting block 44 controls the pushing block 45 to move downward, so that the female mold 1 moves downward, the ejector pin 153 is kept stationary under the supporting action of the ejecting boss 411, the lens in the female mold core 14 is received by the ejector pin 153 and moved out of the female molding groove 140, and finally, a worker takes away and stores the lens. By taking out the lens in the above manner, it is not necessary to provide an ejector plate on the master mold 1, thereby effectively improving the efficiency of heat conduction.

Specifically, with continued reference to fig. 5, the upper surface of the supporting plate 41 is further provided with a supporting spring 412, and the lower end of the supporting spring 412 is fixed in the supporting plate 41. When the mother die 1 is placed on the supporting plate 41, the supporting spring 412 can support the mother die 1, the ejecting boss 411 is not in contact with the ejector pin 153, only when the push block 45 presses the mother die 1, the ejecting boss 411 and the color jade ejector pin 153 are in contact, and the structure can avoid the problem that the product is unintentionally ejected due to the gravity action of the mother die 1.

Specifically, the upper surface of the support plate 41 is also provided with guide rods 413, and the lower ends of the guide rods 413 are fixed in the support plate 41. When the master model 1 is placed on the support plate 41, the guide rods 413 are inserted into the open holes 110 of the master model 1, thereby providing positioning for the master model 1.

More specifically, the number of the guide rods 413 is four, and the four guide rods 413 are arranged in a rectangular array. The stability of positioning of the master mold 1 can be further improved by the guiding action of the four guide rods 413.

Specifically, with continued reference to fig. 7, the supporting plate 41 further has a rotating shaft 414 therein, the lower end of the supporting column 42 has a rotating slot 421, and the rotating shaft 414 is inserted into the rotating slot 421. The support post 42 is rotatable relative to the support plate 41, and the support arm 43 is removed by rotating the support post 42 after the lens is ejected, thereby facilitating the removal of the lens and the master model 1 by the worker.

Specifically, the front end of the support arm 43 has an ejection screw hole 431, the lift block 44 has an external thread, and the lift block 44 is engaged with the ejection screw hole 431. By rotating the elevating block 44, the pushing block 45 can be controlled to move in the up-down direction.

Specifically, the rear end of the supporting arm 43 has a positioning through hole 432, the upper end of the pillar 42 has a threaded groove 422, and the ejection jig 4 further includes: a set screw 46, the set screw 46 passing through the set through hole 432 and engaging with the screw groove 422. The set screw 46 prevents the support arm 43 from rocking in the up-down direction.

Specifically, the rear end of the supporting arm 43 has a directional screw hole 433, and the ejection jig 4 further includes: and a guide screw 47, the guide screw 47 being engaged with the guide screw hole 433, a lower end of the guide screw 47 being in contact with an upper end of the pillar 42. Rotation of the support arm 43 relative to the post 42 is prevented by friction between the set screw 47 and the post 42.

Therefore, the ejection die with the structure can be used for conveniently taking out the lens by a worker, and the female die does not need to be provided with an ejector plate, so that the heat conduction efficiency is improved, and the production efficiency of the lens is greatly improved.

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 an ejecting tool that hot pressing plastic lens mould was used which characterized in that: the ejection jig (4) includes: backup pad (41), pillar (42), support arm (43), lifter (44) and ejector pad (45), pillar (42) are located on backup pad (41) and follow the upper surface of backup pad (41) upwards extends, the rear end of support arm (43) with the upper end of pillar (42) forms fixedly, lifter (44) can set up along upper and lower direction movingly the front end of support arm (43), ejector pad (45) are fixed the lower extreme of lifter (44), the upper surface of backup pad (41) has ejecting boss (411).

2. The ejection jig for the hot-press plastic lens mold according to claim 1, characterized in that: the upper surface of the supporting plate (41) is also provided with a supporting spring (412), and the lower end of the supporting spring (412) is fixed in the supporting plate (41).

3. The ejection jig for the hot-press plastic lens mold according to claim 1, characterized in that: the upper surface of the support plate (41) is further provided with a guide rod (413), and the lower end of the guide rod (413) is fixed in the support plate (41).

4. The ejection jig for the hot-press plastic lens mold according to claim 3, characterized in that: the number of the guide rods (413) is four, and the four guide rods (413) are arranged in a rectangular array mode.

5. The ejection jig for the hot-press plastic lens mold according to claim 1, characterized in that: the supporting plate (41) is also provided with a rotating shaft (414), the lower end of the support column (42) is provided with a rotating groove (421), and the rotating shaft (414) is inserted into the rotating groove (421).

6. The ejection jig for the hot-press plastic lens mold according to claim 1, characterized in that: the front end of the supporting arm (43) is provided with an ejection screw hole (431), the lifting block (44) is provided with external threads, and the lifting block (44) is meshed with the ejection screw hole (431).

7. The ejection jig for the hot-press plastic lens mold according to claim 1, characterized in that: the rear end of support arm (43) has positioning through hole (432), the upper end of pillar (42) has thread groove (422), ejecting tool (4) still includes: a set screw (46), the set screw (46) passing through the set through hole (432) and engaging with the threaded groove (422).

8. The ejection jig for the hot-press plastic lens mold according to claim 1 or 7, characterized in that: the rear end of support arm (43) has directional screw hole (433), ejecting tool (4) still includes: a directional screw (47), the directional screw (47) being engaged with the directional screw hole (433), a lower end of the directional screw (47) being in contact with an upper end of the pillar (42).