CN218366278U

CN218366278U - Lens injection mold with replaceable core

Info

Publication number: CN218366278U
Application number: CN202222302427.XU
Authority: CN
Inventors: 谭沿河; 姚雅兰
Original assignee: Dongguan Jingcai Optics Co ltd
Current assignee: Dongguan Jingcai Optics Co ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2023-01-24
Anticipated expiration: 2032-08-30

Abstract

The utility model relates to a lens technical field of moulding plastics, concretely relates to lens injection mold of interchangeable core, include: go up the die body, lower die body, connect the guide pillar, the mold core, the coarse positioning mechanism of mold core and the smart positioning mechanism of mold core, it cooperatees with lower die body specification to go up the die body, go up the die body and can dismantle the compound die through connecting the guide pillar between the die body and the lower die body, it is as guiding orientation device to connect the guide pillar, the mold core groove has been seted up to the top surface of going up the die body and the bottom surface of lower die body, the mold core groove cooperatees with the mold core, the coarse positioning mechanism of mold core sets up at last die body top surface and lower die body bottom surface, the smart positioning mechanism of mold core sets up at last die body and the both sides wall face of die body down and can dismantle the connection. And mounting grooves are additionally formed in the top surfaces and the bottom surfaces of the upper die and the lower die, and the die core is detachably mounted in the die by utilizing threaded connection. Utilize stop gear and setting element to adjust the relative position between mold core and the mould, guarantee the stability of connecting and the accurate of deciding, prevent injection mold weeping or the problem that leaks gas and produce the bubble.

Description

Lens injection mold with replaceable core

Technical Field

The utility model relates to a lens technical field, concretely relates to lens injection mold of interchangeable core moulds plastics.

Background

The resin lens is an optical lens which is manufactured by processing, synthesizing and polishing resin serving as a raw material through a precise chemical process, is widely applied to various glasses, and has the advantages of light weight, impact resistance, difficult cracking, safety, comfortable wearing, convenient processing, wide application and higher ultraviolet absorption capacity than glass lenses. The lenses of the existing glasses are mostly resin lenses when in use, the resin lenses are in a liquid state before production and molding, and liquid resin is injected into a mold during production, so that the resin lenses are formed through cooling and molding.

In the prior art, because the same mold core can only produce lens products of the same specification, if lens products of different specifications need to be produced, the mold needs to be replaced. But because the cost of a whole set of mould is higher, if can change the mould core of mould and last lower mould into the combination formula installation, reply the lens of different specifications then only need change the mould core can, reduction in production cost improves production efficiency. However, such injection mold generally adopts a mold core and a mold which are relatively complex to disassemble and assemble, and the replacement operation is relatively complex, so that the upper mold and the lower mold are required to be matched. And meanwhile, the fixed connection stability and the matching degree of the mold core and the mold are poor.

In view of this, it is desirable to design a lens injection mold with replaceable core, which is to detachably install a mold core into the mold by adding installation grooves on the top and bottom surfaces of the upper and lower molds and using a threaded connection manner. Utilize stop gear simultaneously and decide for the piece to adjust the relative position between mold core and the mould, guarantee the stability of connecting and the accurate of deciding, prevent injection mold weeping or the problem that leaks gas and produce the bubble. Simple use and convenient disassembly and assembly.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model aims to provide a lens injection mold capable of replacing cores, which is characterized in that a mounting groove is additionally arranged on the top surface and the bottom surface of the upper mold and the lower mold, and a mold core is detachably arranged in the middle of the mold by using a threaded connection mode. Utilize stop gear simultaneously and decide for the piece to adjust the relative position between mold core and the mould, guarantee the stability of connecting and the accurate of deciding, prevent injection mold weeping or the problem that leaks gas and produce the bubble. Simple use and convenient disassembly and assembly.

In order to realize the above object, the technical scheme of the utility model is that: a core-interchangeable lens injection mold comprising: the mould comprises an upper mould body, a lower mould body, a connecting guide pillar, a mould core coarse positioning mechanism and a mould core fine positioning mechanism, wherein the upper mould body is matched with the lower mould body in specification, the upper mould body and the lower mould body are detachably matched through the connecting guide pillar, the connecting guide pillar is used as a guiding and positioning device, mould core grooves are formed in the top surface of the upper mould body and the bottom surface of the lower mould body, the mould core grooves are matched with the mould core, the mould core coarse positioning mechanism is arranged on the top surface of the upper mould body and the bottom surface of the lower mould body, and the mould core fine positioning mechanism is arranged on the two side wall surfaces of the upper mould body and the lower mould body and is detachably connected with the two side wall surfaces of the upper mould body and the lower mould body.

Further, the upper mold body includes: the injection molding device comprises an injection molding head, three injection molding channels and a mold core groove, wherein the injection molding head is fixedly installed at the center of the top surface of the upper mold body and communicated with the three injection molding channels, the mold core groove is formed in two sides of the injection molding head, and the inner wall surface of the mold core groove is communicated with the three injection molding channels.

Further, the connecting guide post comprises: the guide sleeve is fixedly installed on the top surface of the lower die body, the guide pillar is fixedly installed on the bottom surface of the upper die body, the guide pillar is inserted into the inner diameter surface of the guide sleeve in a plugging mode, and the reset spring is installed at the bottom of the guide sleeve and connected with the guide pillar.

Further, the mold core includes: the mould comprises an upper mould core, a lower mould core and a mould blank, wherein a communication hole and a positioning hole are formed in the side wall of the upper mould core, the communication hole is matched with the three injection mould channels in specification, the positioning hole is matched with the mould core fine positioning mechanism, only the positioning hole is formed in the side wall surface of the lower mould core, and the mould blank is fixedly arranged at the tail ends of the upper mould core and the lower mould core.

Further, the coarse positioning mechanism of mold core includes: the spring telescopic pin is fixedly arranged on the top surface of the upper die body and the bottom surface of the lower die body, the positioning ring is fixedly arranged on the top surface of the upper die core and the bottom surface of the lower die core, and the spring telescopic pin is matched with the positioning ring and can be plugged.

Further, the fine positioning mechanism of the mold core comprises: the positioning screw holes are formed in two side wall surfaces of the upper die body and the lower die body, the positioning screw rods are matched with the positioning screw holes and can be in threaded connection, and the tail ends of the positioning screw rods are matched with the positioning holes and can be in threaded connection.

Has the beneficial effects that:

the utility model provides a pair of lens injection mold of interchangeable core adds the mounting groove through top surface and the bottom surface at last lower mould, utilizes threaded connection's mode to install mold core detachably in the middle of the mould. Utilize stop gear simultaneously and decide for the piece to adjust the relative position between mold core and the mould, guarantee the stability of connecting and the accurate of deciding, prevent injection mold weeping or the problem that leaks gas and produce the bubble. Simple use and convenient disassembly and assembly.

Drawings

Fig. 1 is the utility model relates to a lens injection mold structure schematic diagram of interchangeable core.

In the figure: 1-upper die body, 2-lower die body, 3-connecting guide column, 4-die core, 5-die core coarse positioning mechanism, 6-die core fine positioning mechanism, 11-injection head, 12-injection three-way pipe, 13-die core groove, 31-guide sleeve, 32-guide column, 33-return spring, 41-upper die core, 42-lower die core, 43-die blank, 51-spring expansion pin, 52-positioning ring, 61-positioning screw, 62-positioning screw hole, 411-communication hole and 412-positioning hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

As shown in fig. 1, the utility model discloses a lens injection mold of interchangeable core, include: the die comprises an upper die body 1, a lower die body 2, a connecting guide pillar 3, a die core 4, a die core coarse positioning mechanism 5 and a die core fine positioning mechanism 6, wherein the upper die body 1 is matched with the lower die body 2 in specification, the upper die body 1 and the lower die body 2 are detachably matched through the connecting guide pillar 3, the connecting guide pillar 3 serves as a guiding and positioning device, a die core groove 13 is formed in the top surface of the upper die body 1 and the bottom surface of the lower die body 2, the die core groove 13 is matched with the die core 4, the die core coarse positioning mechanism 5 is arranged on the top surface of the upper die body 1 and the bottom surface of the lower die body 2, and the die core fine positioning mechanism 6 is arranged on the two side walls of the upper die body 1 and the lower die body 2 and is detachably connected.

In this embodiment, the upper mold body 1 includes: the injection molding device comprises an injection molding head 11, three injection molding channels 12 and a mold core groove 13, wherein the injection molding head 11 is fixedly installed at the center of the top surface of the upper mold body 1, the injection molding head 11 is communicated with the three injection molding channels 12, the mold core groove 13 is formed in two sides of the injection molding head 11, and the inner wall surface of the mold core groove 13 is communicated with the three injection molding channels 12.

In this embodiment, the connecting guide post 3 includes: the guide sleeve 31 is fixedly arranged on the top surface of the lower die body 2, the guide column 32 is fixedly arranged on the bottom surface of the upper die body 1, the guide column 32 is inserted into the inner diameter surface of the guide sleeve 31, and the return spring 33 is arranged at the bottom of the guide sleeve 31 and connected with the guide column 32.

In this embodiment, the mold core 4 includes: the injection mold comprises an upper mold core 41, a lower mold core 42 and a mold blank 43, wherein a communication hole 411 and a positioning hole 412 are formed in the side wall of the upper mold core 41, the communication hole 411 is matched with the three injection molding channels 12 in specification, the positioning hole 412 is matched with a mold core fine positioning mechanism 6, only the positioning hole 412 is formed in the side wall surface of the lower mold core 42, and the mold blank 43 is fixedly installed at the tail ends of the upper mold core 41 and the lower mold core 42.

In this embodiment, the coarse positioning mechanism 5 of the mold core comprises: the spring telescopic pin 51 is fixedly arranged on the top surface of the upper die body 1 and the bottom surface of the lower die body 2, the positioning ring 52 is fixedly arranged on the top surface of the upper die core 41 and the bottom surface of the lower die core 42, and the spring telescopic pin 51 is matched with the positioning ring 52 and can be plugged.

In this embodiment, the fine positioning mechanism 6 of the mold core includes: the positioning screw 61 and the positioning screw 62, the positioning screw 62 is provided on two side wall surfaces of the upper mold body 1 and the lower mold body 2, the positioning screw 61 and the positioning screw 62 are matched and can be in threaded connection, and the tail end of the positioning screw 61 and the positioning hole 412 are matched and can be in threaded connection.

The working principle is as follows:

firstly, as the top surface of the upper die body 1 is provided with the die core groove 13, the upper die core 41 is in threaded connection with the die core groove 13, and the upper die core 41 is rotatably installed in the die core groove 13. At this time, the upper mold core 41 and the mold core groove 13 are shaft sealed because the upper mold core 41 and the mold core groove 13 are connected by a screw connection.

However, the problem of how to perform the positioning operation between the upper mold core 41 and the mold core groove 13 is solved by the mold core coarse positioning mechanism 5, because the mold core coarse positioning mechanism 5 is provided with the spring retractable pin 51, the spring retractable pin 51 is installed on the top surface of the upper mold core 1 and located on both sides of the mold core groove 13, the upper mold core 41 is rotated, the positioning ring 52 is installed at the end of the upper mold core 41, after the threaded connection between the upper mold core 41 and the mold core groove 13 is completed, the upper mold core 41 is rotated, so that the positioning ring 52 is sleeved with the spring retractable pin 51, the spring retractable pin 51 is penetrated in the positioning ring 52 under the action of the spring, and at this time, the coarse positioning between the upper mold core 41 and the mold core groove 13 is completed.

Further, since the two side wall surfaces of the upper mold body 1 are provided with the positioning screw holes 62, the positioning screw threads are connected in the positioning screw holes 62 and pushed along the positioning screw holes 62, and the end portion of the positioning screw 61 is inserted into the positioning hole 412 provided in the side wall surface of the upper mold core 41 and connected with the positioning screw threads. At this time, the positioning screw 61 is screwed into the positioning hole 412, so that the micro-rotation of the upper die core 41 relative to the die core groove 13 is limited, and the precise positioning is realized.

Because the side wall surface of the upper mold core 41 is provided with the communicating hole 411, after the mold core fine positioning mechanism 6 is positioned, the communicating hole 411 is communicated with the injection three channel 12, the top surface of the injection three channel 12 is communicated with the injection head 11, and after the injection head 11 injects the injection liquid into the upper mold body 1, the injection liquid flows into the upper mold core 41 through the injection three channel 12, so as to flow onto the mold blank 43 for molding.

Because the connection between the lower mold core 42 and the lower mold body 2 is the connection between the lower mold core 42 and the mold core groove 13, and relative to the connection between the upper mold core 41 and the upper mold body 1, the lower mold core 42 also adopts the mold core coarse positioning mechanism 5 and the mold core fine positioning mechanism 6 to ensure the positioning accuracy between the lower mold core 42 and the mold core groove 13 and prevent the lower mold core 42 from micro-rotating.

Wherein, because the top surface of the lower mold core 42 is provided with the mold blank 43, the mold blanks 43 between the upper and lower mold cores 42 are matched, thereby forming the injection mold.

Because the upper die body 1 and the lower die body 2 are in butt joint and matched by adopting the connecting guide pillar 3, the guide sleeve 31 is arranged on the top surface of the lower die body 2, the guide pillar 32 is arranged on the bottom surface of the upper die body 1, the guide pillar 32 moves along the guide sleeve 31 in the vertical direction, and the upper die body and the lower die body are driven to reset by the reset spring 33 under the condition of not applying external force.

The utility model provides a pair of lens injection mold of interchangeable core adds the mounting groove through top surface and the bottom surface at last lower mould, utilizes threaded connection's mode to install mold core 4 detachably into in the middle of the mould. Utilize stop gear simultaneously and decide to adjust for the relative position between module core 4 and the mould for the piece, guarantee the stability of connecting and the accurate of deciding, prevent injection mold weeping or the problem that leaks gas and produce the bubble. Simple use and convenient disassembly and assembly.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and all modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. An interchangeable core lens injection mold comprising: the die comprises an upper die body (1), a lower die body (2), connecting guide columns (3), a die core (4), a coarse die core positioning mechanism (5) and a fine die core positioning mechanism (6), and is characterized in that the upper die body (1) is matched with the lower die body (2) in specification, the upper die body (1) and the lower die body (2) can be detachably assembled through the connecting guide columns (3), the connecting guide columns (3) serve as guiding and positioning devices, die core grooves (13) are formed in the top surface of the upper die body (1) and the bottom surface of the lower die body (2), the die core grooves (13) are matched with the die core (4), the coarse die core positioning mechanism (5) is arranged on the top surface of the upper die body (1) and the bottom surface of the lower die body (2), and the fine die core positioning mechanism (6) is arranged on the two side wall surfaces of the upper die body (1) and the lower die body (2) and can be detachably connected.

2. A core-interchangeable lens injection mold according to claim 1, characterized in that the upper mold body (1) comprises: the injection molding die comprises an injection molding head (11), three injection molding channels (12) and a die core groove (13), wherein the injection molding head (11) is fixedly installed at the center of the top surface of an upper die body (1), the injection molding head (11) is communicated with the three injection molding channels (12), the die core groove (13) is formed in two sides of the injection molding head (11), and the inner wall surface of the die core groove (13) is communicated with the three injection molding channels (12).

3. The interchangeable core lens injection mold according to claim 2, wherein the connecting guide post (3) comprises: the die comprises a guide sleeve (31), a guide pillar (32) and a return spring (33), wherein the guide sleeve (31) is fixedly installed on the top surface of the lower die body (2), the guide pillar (32) is fixedly installed on the bottom surface of the upper die body (1), the guide pillar (32) is inserted into the inner diameter surface of the guide sleeve (31), and the return spring (33) is installed at the bottom of the guide sleeve (31) and connected with the guide pillar (32).

4. A core-replaceable lens injection mold according to claim 3, characterized in that the mold core (4) comprises: the injection molding device comprises an upper mold core (41), a lower mold core (42) and a mold blank (43), wherein a communication hole (411) and a positioning hole (412) are formed in the side wall of the upper mold core (41), the communication hole (411) is matched with the specifications of three injection molding channels (12), the positioning hole (412) is matched with a mold core fine positioning mechanism (6), only the positioning hole (412) is formed in the side wall surface of the lower mold core (42), and the mold blank (43) is fixedly installed at the tail ends of the upper mold core (41) and the lower mold core (42).

5. The core-replaceable lens injection mold of claim 4, wherein the core coarse positioning mechanism (5) comprises: spring expansion pin (51) and holding ring (52), spring expansion pin (51) fixed mounting be in the top surface of last die body (1) and the bottom surface of die body (2) down, holding ring (52) fixed mounting be in the top surface of last mold core (41) and the bottom surface of lower mold core (42), spring expansion pin (51) with holding ring (52) cooperate the plug-in.

6. A replaceable lens injection mold as in claim 5, wherein the core fine positioning mechanism (6) comprises: the positioning die comprises a positioning screw rod (61) and a positioning screw hole (62), wherein the positioning screw hole (62) is formed in two side wall surfaces of the upper die body (1) and the lower die body (2), the positioning screw rod (61) and the positioning screw hole (62) are matched and can be in threaded connection, and the tail end of the positioning screw rod (61) and the positioning hole (412) are matched and can be in threaded connection.