CN212097337U - Forming a well-balanced one-mold multi-cavity lens mold - Google Patents

Abstract

The utility model discloses a one-mould multi-cavity lens mould with balanced molding, which comprises a base, a lower mould seat, a lower mould core, an upper mould seat, an upper mould core, an ejection mechanism and a cover plate, wherein the surface of the lower mould core is provided with a plurality of lower cavities and a plurality of lower mould cores which are detachably arranged, the lower mould cores are arranged below the lower cavities in a one-to-one correspondence manner, and the tops of the lower mould cores extend into the lower cavities; the surface of the upper die core is provided with a plurality of upper concave cavities, the upper concave cavities correspond to the lower concave cavities one by one, and the upper concave cavities and the lower concave cavities surround to form a molding cavity for molding the lens; one side of the lower concave cavity is provided with a glue inlet, the lower die core and the upper die core are both provided with a hot melt glue flow passage, one end of the hot melt glue flow passage is communicated with the glue inlet, and the diameter of the glue inlet is smaller than that of the hot melt glue flow passage; compared with the traditional mold structure, the problem of air lines generated after the lens is molded due to the fact that the glue feeding speed is low can be solved, so that the surface texture balance after the lens is molded can be guaranteed, and the product quality is improved.

Description

Forming a well-balanced one-mold multi-cavity lens mold

technical field

The utility model relates to the technology in the field of molds, in particular to a one-mode multi-cavity lens mold with balanced molding.

Background technique

Molds, various molds and tools used in industrial production to obtain the desired products by injection molding, blow molding, extrusion, die casting or forging, smelting, stamping and other methods. In a nutshell, a mold is a tool used to make a shaped item, this tool is made up of various parts, and different molds are made up of different parts. It mainly realizes the processing of the shape of the article by changing the physical state of the formed material. Known as the "Mother of Industry".

In the prior art, a mold for forming a lens generally adopts a multi-cavity mode of one mold to form a plurality of lenses at the same time. However, the existing multi-cavity mold has too many acupoints, which leads to a slow glue feeding speed, which makes it easy to generate air streaks after the lens is formed, and the surface texture after the lens is formed is uneven, which affects the quality of the product.

Utility model content

In view of this, the present utility model aims at the deficiencies in the prior art, and its main purpose is to provide a one-mold multi-cavity lens mold with balanced molding, which can effectively solve the problem of the existing problems in the mold for molding lenses in the prior art. The glue speed is slow, so that the problem of air streaks is easy to occur after the lens is formed.

To achieve the above object, the present invention adopts the following technical scheme:

A one-mold multi-cavity lens mold with balanced molding, comprising a base, a lower mold base, a lower mold core, an upper mold base, an upper mold core, an ejection mechanism and a cover plate, the lower mold base is installed on the base, and the lower mold base is mounted on the base. The lower mold core is installed on the lower mold base, the upper mold base can be movably installed up and down just above the lower mold base, the upper mold core is installed on the upper mold base, and the ejection mechanism is set on the base and the lower mold base. In between, the cover plate is installed on the upper die seat; wherein

The surface of the lower mold core is provided with a number of lower concave cavities and a number of lower mold cores that are detachably installed. The lower mold cores are installed under the lower concave cavity one by one, and the top of the lower mold core extends into the lower concave cavity. ;

The surface of the upper mold core is provided with a plurality of upper concave cavities, the upper concave cavity and the lower concave cavity are in one-to-one correspondence, and the upper concave cavity and the lower concave cavity enclose a forming cavity for forming a lens;

One side of the lower cavity is provided with a glue inlet, and both the lower mold core and the upper mold core are provided with a hot melt adhesive flow channel, one end of the hot melt glue flow channel is connected to the glue inlet, and the diameter of the glue inlet is smaller than that of the hot melt glue. The diameter of the melt runner;

The middle part of the cover plate is provided with a pouring spout, the pouring spout is provided with a hot runner, and the hot runner is connected with the hot melt adhesive runner.

As a preferred solution: the hot melt adhesive flow channel includes a main flow channel and a branch flow channel, one end of the main flow channel is connected to the hot runner; one end of the branch flow channel is connected to the main flow channel, and the other end of the branch flow channel is connected to the inlet channel. plastic mouth.

As a preferred solution: the ejector mechanism has a main channel ejector, a branch channel ejector and a cavity ejector;

The lower die base and the lower die core are provided with a first through hole, a second through hole and a third through hole, the first through hole communicates with the main flow channel, the second through hole communicates with the branch flow channel, and the third through hole communicates with the lower cavity; wherein

The main channel ejector pin passes through the first perforation to extend into the main channel, the branch channel ejector pin penetrates the second perforation to extend into the branch channel, and the cavity ejector pin penetrates the third perforation to extend into the lower cavity;

As a preferred solution: the cavity ejector pins are arranged at the four corners of the lower cavity.

As a preferred solution: the bottom surface of the lower concave cavity is provided with a concave position for forming the mounting convex point of the lens

As a preferred solution: the top of the lower mold core is provided with a sawtooth forming part for forming a sawtooth concentric ring of the lens.

As a preferred solution, the lower mold core is provided with an installation cavity communicating with the lower cavity, and the lower mold core is detachably installed in the installation cavity.

Compared with the prior art, the present utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solutions that: by arranging a glue inlet on one side of several lower cavities, the diameter of the glue inlet is smaller than the diameter of the glue inlet. The diameter of the melt adhesive flow channel; when the hot melt adhesive flows into the lower cavity through the hot melt adhesive flow channel, the use of the small diameter glue inlet can instantly speed up the speed of the hot melt adhesive entering the molding cavity, compared with the traditional mold structure. , which can avoid the problem of air streaks after the lens is formed due to the slow feeding speed, so as to ensure the balanced surface texture after the lens is formed, and improve the quality of the product;

Secondly, the lower mold core is detachably installed to meet different specifications of lens molding, improve the versatility of the mold, and reduce the cost of mold manufacturing;

In addition, the cleverly arranged main runner, branch runner, main runner thimble, branch runner thimble and cavity thimble are reasonably arranged, which can balance the ejection of the lens, thereby improving the ejection efficiency and the ejection quality.

In order to illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the preferred embodiment of the present utility model;

Fig. 2 is the exploded view of the preferred embodiment of the present utility model;

Fig. 3 is the structural representation of the lower die seat and the lower die core of the preferred embodiment of the present utility model;

Fig. 4 is a partial enlarged view at A in Fig. 3;

Fig. 5 is the first cross-sectional schematic diagram of the preferred embodiment of the present invention;

FIG. 6 is a partial enlarged view of B in FIG. 5 .

Description of drawings:

10. Base 20. Lower die seat

21. The first perforation 22. The second perforation

23. The third perforation 30. Lower die

31. Lower cavity 311. Glue inlet

312, recess 32, lower core

321. Sawtooth forming part 40. Upper die seat

50. Upper die 51. Upper cavity

60. Ejector mechanism 61. Main channel thimble

62. Branch runner thimble 63. Cavity thimble

70, cover plate 71, pouring port

72. Hot runner 80. Hot melt adhesive runner

81. Main channel 82. Branch channel.

Detailed ways

Please refer to FIG. 1 to FIG. 6 , which show the specific structure of the preferred embodiment of the present invention, which is a one-mold multi-cavity lens mold with balanced molding, a base 10 , a lower mold base 20 , a lower mold The core 30 , the upper die seat 40 , the upper die core 50 , the ejection mechanism 60 and the cover plate 70 .

The lower mold base 20 is installed on the base 10 , the lower mold core 30 is installed on the lower mold base 20 , the upper mold base 40 is movably installed up and down directly above the lower mold base 20 , and the upper mold core 50 is installed The ejector mechanism 60 is arranged between the base 10 and the lower die holder 20, and the cover plate 70 is arranged on the upper die holder 40. In the embodiment of the present application, the surface of the lower die core 30 is A number of lower concave cavities 31 and a number of lower mold cores 32 are detachably installed. The lower mold cores 32 are installed under the lower concave cavity 31 in a one-to-one correspondence, and the top of the lower mold core 32 protrudes into the lower concave cavity 31. ; The surface of the upper mold core 50 is provided with a number of upper concave cavities 51, the upper concave cavity 51 and the lower concave cavity 31 are in one-to-one correspondence, and the upper concave cavity 51 and the lower concave cavity 31 form a molding cavity for forming a lens, One side of the lower cavity 31 is provided with a glue inlet 311 .

Specifically, by setting glue inlets on one side of several lower cavities, and the diameter of the glue inlets is smaller than the diameter of the hot melt adhesive runner; when the hot melt adhesive flows into the lower cavities through the hot melt glue runner, use The small-diameter glue inlet can instantly speed up the speed of the hot-melt glue entering the molding cavity. Compared with the traditional mold structure, it can avoid the problem of air streaks after the lens is formed due to the slow glue feeding speed, so as to ensure The surface texture of the lens after molding is balanced, which improves the quality of the product.

Both the lower mold core 20 and the upper mold core 50 are provided with a hot melt adhesive flow channel 80 , one end of the hot melt adhesive flow channel 80 is connected to a glue inlet 311 , and the diameter of the glue inlet 311 is smaller than that of the hot melt glue flow channel 80 . Diameter; the middle of the cover plate 70 is provided with a pouring spout 71 , the pouring spout 71 is provided with a hot runner 72 , and the hot runner 72 communicates with the hot melt adhesive runner 80 . In the embodiment of the present application, the hot melt adhesive flow channel 80 includes a main flow channel 81 and a branch flow channel 82. One end of the main flow channel 81 is connected to the hot runner 72; one end of the branch flow channel 82 is connected to the main flow channel 81. The other end of the branch channel 82 is connected to the glue inlet 311 .

The ejector mechanism 60 has a main channel ejector 61 , a branch channel ejector 62 and a cavity ejector 63 ; wherein the lower die base 20 and the lower die core 30 are provided with a first through hole 21 , a second through hole 22 and a third through hole 23 , the first through hole 21 communicates with the main flow channel 81, the second through hole 22 communicates with the branch flow channel 82, and the third through hole 23 communicates with the lower cavity 31; Inside, the branch flow channel ejector pin 62 passes through the second through hole 22 and protrudes into the branch flow channel 82 , and the cavity ejector pin 63 extends into the lower cavity 31 through the third through hole 23 . Preferably, the cavity ejector pins 63 are arranged at the four corners of the lower concave cavity 31 to provide a balanced ejection force when ejecting the lens.

The bottom surface of the lower cavity 31 is provided with a concave position 312 for forming the mounting convex point of the lens, and the top of the lower mold core 32 is provided with a sawtooth forming part 321 for forming a sawtooth concentric ring of the lens. The lower mold core 30 is provided with an installation cavity 33 communicating with the lower cavity 31 , and the lower mold core 32 is detachably installed in the installation cavity 33 .

The key point of the design of the utility model is: by setting glue inlets on one side of several concave cavities, and the diameter of the glue inlets is smaller than the diameter of the hot-melt glue flow channel; the hot-melt glue flows into the lower concave through the hot-melt glue flow channel When the cavity is used, the use of the small diameter glue inlet can instantly speed up the speed of the hot melt adhesive entering the molding cavity. Compared with the traditional mold structure, it can avoid the problem of air lines after the lens is formed due to the slow glue feeding speed. , so as to ensure that the surface texture of the lens after molding is balanced, and the quality of the product is improved;

Secondly, the lower mold core is detachably installed to meet different specifications of lens molding, improve the versatility of the mold, and reduce the cost of mold manufacturing;

In addition, the cleverly arranged main runner, branch runner, main runner thimble, branch runner thimble and cavity thimble are reasonably arranged, which can balance the ejection of the lens, thereby improving the ejection efficiency and the ejection quality.

In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings, only In order to facilitate the description of the present invention and simplify the description, it is not indicated or implied that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

The above descriptions are only preferred embodiments of the present invention, and do not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention , all still belong to the scope of the technical solution of the present invention.

Claims (7)

1. A one-mode multi-cavity lens mold with balanced molding, characterized in that: it comprises a base (10), a lower mold base (20), a lower mold core (30), an upper mold base (40), an upper mold core (50), an ejection mechanism (60) and a cover plate (70), the lower mold seat (20) is installed on the base (10), the lower mold core (30) is installed on the lower mold seat (20), and the lower mold seat (20) is installed on the lower mold seat (20). The upper die base (40) is movably installed up and down just above the lower die base (20), the upper die core (50) is installed on the upper die base (40), and the ejection mechanism (60) is arranged on the base Between (10) and the lower die base (20), the cover plate (70) is installed on the upper die base (40); wherein The surface of the lower mold core (30) is provided with a number of lower concave cavities (31) and a number of lower mold cores (32) which are detachably installed, and the lower mold cores (32) are installed in the lower concave cavities (31) in one-to-one correspondence. Below the lower core (32), the top of the lower core (32) extends into the lower cavity (31); The surface of the upper die core (50) is provided with a plurality of upper cavities (51), the upper cavities (51) and the lower cavities (31) are in one-to-one correspondence, the upper cavities (51) and the lower cavities (31) ) to form a forming cavity for forming a lens; One side of the lower cavity (31) is provided with a glue inlet (311), and both the lower die core (30) and the upper die core (50) are provided with a hot melt adhesive flow channel (80), and the hot melt adhesive flows One end of the channel (80) is connected to the glue inlet (311), and the diameter of the glue inlet (311) is smaller than the diameter of the hot melt adhesive flow channel (80); The middle part of the cover plate (70) is provided with a sprue (71), the sprue (71) is provided with a hot runner (72), and the hot runner (72) communicates with the hot melt adhesive runner (80). 2. The one-mode multi-cavity lens mold with balanced molding according to claim 1, wherein the hot melt adhesive flow channel (80) comprises a main flow channel (81) and a branch flow channel (82), the One end of the main flow channel (81) is connected to the hot runner (72); one end of the branch flow channel (82) is connected to the main flow channel (81), and the other end of the branch flow channel (82) is connected to the glue inlet (311). 3. The one-mode multi-cavity lens mold with balanced molding according to claim 2, characterized in that: the ejection mechanism (60) has a main channel ejector (61), a branch channel ejector (62) and a cavity Thimble(63); The lower die base (20) and the lower die core (30) are provided with a first through hole (21), a second through hole (22) and a third through hole (23), and the first through hole (21) communicates with the main flow channel (81) , the second through hole (22) communicates with the branch flow channel (82), and the third through hole (23) communicates with the lower cavity (31); wherein The main flow channel ejector pin (61) passes through the first through hole (21) and protrudes into the main flow channel (81), and the branch flow channel ejector pin (62) passes through the second through hole (22) and extends into the branch flow channel (82) Inside, the cavity ejector pin (63) protrudes into the lower cavity (31) through the third through hole (23). 4 . The one-mode multi-cavity lens mold with balanced molding according to claim 3 , wherein the cavity ejector pins ( 63 ) are arranged at the four corners of the lower concave cavity ( 31 ). 5 . 5. The one-mode multi-cavity lens mold with balanced molding according to claim 1, characterized in that: the bottom surface of the lower concave cavity (31) is provided with a concave position (312) for forming the mounting convex point of the lens . 6. The one-mode multi-cavity lens mold with balanced molding according to claim 1, characterized in that: the top of the lower mold core (32) is provided with a sawtooth forming part (321) for forming a sawtooth concentric ring of the lens . 7. The one-mode multi-cavity lens mold with balanced molding according to claim 1, characterized in that: the lower mold core (30) is provided with a mounting cavity (33) communicating with the lower concave cavity (31), so The lower mold core (32) is detachably installed in the installation cavity (33).

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