CN212860293U - Precise mold for demolding of movable mold side and optical lens - Google Patents

Abstract

The utility model discloses a precise mould for side demoulding of a movable mould, which comprises a fixed mould and a movable mould, wherein the movable mould comprises at least two rear mould cores, and a demoulding mechanism is arranged on the movable mould; the edge of the mirror surface area of the rear mold core is provided with at least two arc channel-shaped structures which are distributed annularly and have arc slope-shaped transition at two ends, a vacancy avoidance position is arranged between the arc channel-shaped structures, and an ejection pin hole is arranged on the vacancy avoidance position; the demolding mechanism comprises at least two ejector pins and an ejector device arranged on one side of each ejector pin, and the ejector device is used for driving the ejector pins to telescopically slide along the ejector pin holes; the utility model also provides an accurate optical lens piece that is used for the drawing of patterns of movable mould side, the utility model discloses install demoulding mechanism on the movable mould, solve effectively that ultra-thin, the thickness ratio disparity that is located the movable mould side, the optical lens piece that the marginal bending is severe deformation problem when the shaping drawing of patterns, guarantee the high accuracy production of product.

Description

Precise mold for demolding of movable mold side and optical lens

Technical Field

The utility model relates to an optical lens's mould is made and is moulded plastics the field, especially relates to an accurate mould and optical lens who is used for movable mould side drawing of patterns.

Background

With the continuous improvement and the continuous reduction of the size of the pixels of the mobile phone camera, the requirement on the precision of the die is higher and higher. The existing mold for the mobile phone camera lens is generally processed by adopting an ultra-precision processing technology, for example, a nanoscale single-point diamond ultra-precision processing machine tool is used for processing a lens mold core, an ultra-precision coordinate grinding machine is used for processing a through hole of a thimble pin, and all ultra-precision processing equipment is used to ensure that the precision of the mold is controlled at a micro-nano level. The injection molding precision of the mobile phone camera lens is greatly improved.

The existing mold technology basically adopts a mode of side ejection of a movable mold (a rear mold), namely, a front mold is not moved, and the rear mold ejects a cured optical lens by using an ejection pin in a mold splitting process. Although the ultra-precision machining process of the mold and the modern fully-electronic-controlled precision injection molding process can ensure the product quality and yield of most mobile phone camera lenses, for some special lenses, such as ultra-thin lenses, the thickness is within 0.23mm, and lenses with different thicknesses, such as lenses with very thick center positions and very thin edge positions, or lenses with very thin center positions and very thick edge positions, and the thickness ratio is more than 3 times of lenses; some aspheric lenses have sharp, relatively sharp edges. For these types of lenses, after injection molding and pressure maintaining, in the demolding and releasing process, due to the fact that the curved surface is deep and the slope is steep, the surface bonding force of the mold core is large, the surface shape of the lens is often distorted and deformed when the fixed mold side (front mold) and the movable mold side (rear mold) are separated and demolded, the curved surfaces on the two sides of the lens generate the problem of yas (AS, and the surface shape errors in the X and Y directions are not consistent), so that serious surface shape errors are caused, double images or blurring of the images are directly caused, and the resolving power of optical imaging is reduced.

Wherein taiwan burt photoelectricity proposes an optical lens and a mold for manufacturing the same in patent CN201520892820.6, the mold for manufacturing is provided with a base, a lower mold, an upper mold and an ejection head, the base is provided with at least three ejection pins, the lower mold is provided with a lower mold and a lower mold core, the lower mold core is provided with a lower mold cavity and at least three through holes, each ejection pin extends into the lower mold cavity through the through hole, the upper mold is provided with an upper mold and an upper mold core with the upper mold cavity, a mold cavity is formed between the two mold cavities when the two mold cavities are attached, liquid plastic forms an optical lens in the mold cavity, each ejection pin simultaneously abuts against the bottom surface of the optical lens to enable the optical lens to be uniformly stressed to be separated from the lower mold cavity, and an optical lens and a mold for manufacturing the same are provided, which apply a uniform force, are not.

Although the above-mentioned technology solves the problem of uniform stress when the optical lens is demolded and molded, for some lenses that are ultra-thin, have a very different thickness ratio, or have a severely curved edge, the technology still cannot determine the distortion deformation generated when the mold side (front mold) is opened and separated, so that a serious asian problem (AS, i.e., an asymmetric surface type error in the X and Y directions) is easily generated, resulting in unclear imaging or ghost images. Meanwhile, the ejection pins can generate more or less burrs or batch peaks, generally the minimum is a few tenths of micrometers, the maximum can reach twenty-thirty micrometers, for a mobile phone camera with extremely high precision requirement, as long as the burrs or batch peaks with the size of a few tenths of micrometers exist, the assembly parallelism and the air gap between the lens assembly bearing surface and other lenses can be directly influenced, and the influence factor belongs to a great abnormal problem in the field of high-precision optics.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the above-mentioned defect among the prior art, provide a drawing of patterns atress even, drawing of patterns precision is high, can effectively eliminate the ya si problem of lens, can guarantee the assembly precision between each lens, can solve the precision problem's of the optical lens shaping drawing of patterns of ultra-thin and thickness ratio disparity precision for moving mould side drawing of patterns mould, still provide one kind can adapt to ultra-thin, and thickness ratio disparity, the optical lens product that is used for moving mould side drawing of patterns of the sharp high precision lens drawing of patterns of edge bending.

In order to achieve the purpose, the utility model provides a precise die for side demoulding of a movable die, which comprises a fixed die and the movable die, wherein the movable die comprises at least two rear die cores, and a demoulding mechanism is arranged on the movable die; the edge of the mirror surface area of the rear mold core is provided with at least two arc channel-shaped structures which are distributed annularly and have arc slope-shaped transition at two ends, a vacancy avoidance position is arranged between the arc channel-shaped structures, and an ejection pin hole is arranged on the vacancy avoidance position; the demolding mechanism comprises at least two ejector pins and an ejector device arranged on one side of each ejector pin, and the ejector device is used for driving the ejector pins to slide along the ejector pin holes in a telescopic mode.

Preferably, the ejection device comprises ejection pin fixing plates respectively arranged on the movable die, compression springs arranged on one sides of the ejection pin fixing plates, and return guide columns arranged around the ejection pin fixing plates; the ejection pin is arranged on the ejection pin fixing plate.

Preferably, the stroke of the withdrawal guide post or the ejection pin is between 0.2mm and 50 mm.

Preferably, the movable die is provided with eight rear die cores.

Preferably, the number of the arc channel-shaped structures is three, and the arc channel-shaped structures are annularly arranged on the edge of the mirror surface area on the rear die core at 120 degrees.

Preferably, the rear mold core is provided with a glue inlet.

Preferably, the surface of the vacancy avoidance position is a plane or an arc-shaped curved surface.

Preferably, the cross-sectional profile of the vacancy-avoiding position is a wave shape with slope-shaped and arc-shaped transitions on two sides or a plurality of arc-shaped sections.

Preferably, the surface of the vacancy avoiding position is higher than the arc channel-shaped structure, and the surface of the vacancy avoiding position is flush with or close to the flange plane of the edge of the rear mold core.

Preferably, the cross-sectional shape of the ejector pin is a circle, a square, a triangle, a polygon, a circular ring, or an asymmetric shape.

Preferably, the movable mold comprises a rear mold fixing plate, mold feet arranged on two sides of the rear mold fixing plate, a supporting plate arranged on one side of the mold feet, a rear mold plate arranged on one side of the supporting plate, a water gap ejector pin arranged on the ejector pin fixing plate, and movable mold side guide rods arranged on the periphery of the mold feet or the supporting plate; the rear mold insert is arranged on the rear mold plate, the ejection pin fixing plate is arranged between the rear mold fixing plate and the supporting plate, the compression spring is arranged between the ejection pin fixing plate and the supporting plate, and the water gap thimble penetrates through the supporting plate and the rear mold plate.

Preferably, the fixed die comprises a front die fixing plate, a front die plate arranged on the front die fixing plate, and at least two front die cores arranged on the front die plate; the number of the front mold cores is the same as that of the rear mold cores, and the positions of the front mold cores are matched with those of the rear mold cores.

Preferably, the fixed die further comprises an insert fixing screw arranged on the front die fixing plate, guide rod fixing bolts arranged on the periphery of the front die plate, a sprue bush arranged in the middle of the front die fixing plate, and a runner communicated with the sprue bush, and the insert fixing screw penetrates through the front die plate and is fixedly connected with the front die core.

Compared with the prior art, the utility model provides a pair of accurate mould that is used for movable mould side drawing of patterns's beneficial effect lies in:

the utility model comprises a fixed die and a movable die, wherein a demoulding mechanism is arranged on the movable die, which can effectively solve the deformation problem of the ultrathin optical lens with great thickness ratio and sharp edge bending at the side of the movable die during the forming and demoulding, and ensure the high-precision production of products;

the movable mold comprises a rear mold core, at least two arc-shaped channel-shaped structures which are distributed annularly and have arc-shaped slope-shaped transition at two ends are arranged on the edge of a mirror surface area of the rear mold core, an avoidance space is arranged between the arc-shaped channel-shaped structures, the arc-shaped channel-shaped structures enable an assembling bearing surface of the optical lens to have very high precision after demolding, the assembling precision among the lenses is ensured, the avoidance space can prevent burrs of an ejection pin of the optical lens from being higher than the assembling bearing surface of the lens during demolding, the assembling parallelism and air gaps between the optical lens and other parts are effectively prevented from being influenced, and the product yield is improved;

in addition, the demolding mechanism comprises at least two ejector pins and an ejector device arranged on one side of each ejector pin, the ejector device is used for driving the ejector pins to slide in a telescopic mode along ejector pin holes in the rear mold core, and then the ejector pins are used for ejecting and demolding products, the arrangement of the two ejector pins can ensure that the stress of the optical lens is more uniform in the demolding process, the optical lens has very high surface accuracy after demolding, and the problem of Asia-Si caused by steep surface types of the optical lens is solved.

The utility model also provides an accurate optical lens piece product that is used for moving die side drawing of patterns, including the surface for the glossy mirror surface region of nanometer precision, set up the flange disc at the regional outside round of mirror surface, the periphery of flange disc is provided with two at least boss structures that the both ends head that the cyclic annular distributes has circular arc slope shape transition, is provided with between per two boss structures and subtracts that to glue the position that has circular arc slope transition, boss structure's shape characteristic is opposite with the shape of the arc channel shape structure of front mould benevolence, and position and quantity are corresponding, the shape characteristic that subtracts to glue the position is opposite with the shape of keeping away the vacancy of front mould benevolence, and position and quantity are corresponding.

Preferably, the glue reducing position is lower than the upper surface of the boss structure, the glue reducing position is close to or flush with the plane of the flange disc, and the glue reducing position can be in contact with the ejection pin.

Preferably, the boss structure is between 10 and 500 microns above the flange disc.

Compared with the prior art, the utility model provides a pair of accurate optical lens piece product that is used for moving die side drawing of patterns's beneficial effect lies in:

the optical lens can adapt to ultrathin high-precision lens demoulding production with great thickness ratio and severe edge bending.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a front view of a first embodiment of the present invention;

fig. 2 is a top view of a first embodiment of the present invention;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

fig. 4 is a partial schematic view of a first embodiment of the present invention;

FIG. 5 is a cross-sectional view at C-O-C in FIG. 2;

FIG. 6 is an enlarged partial view of view F of FIG. 5;

FIG. 7 is a schematic view of the mold shown in FIG. 6 with the front and rear mold cores removed;

fig. 8 is a schematic structural diagram of a rear mold core according to a first embodiment of the present invention;

fig. 9 is a top view of a rear mold insert according to a first embodiment of the present invention;

fig. 10 is an exploded view of a first embodiment of the present invention;

fig. 11 is a front view of a second embodiment of the present invention;

fig. 12 is a top view of a second embodiment of the present invention;

fig. 13 is a schematic view of a first structure of a second embodiment of the present invention;

fig. 14 is a second schematic structural diagram of a second embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example one

As shown in fig. 1-10, the present embodiment provides a precise mold for demolding a movable mold, which includes a fixed mold (or called front mold) 1 and a movable mold (or called rear mold) 2, where the movable mold (or called rear mold) 2 includes at least two rear mold cores 2150, and the movable mold (or called rear mold) 2 is provided with a demolding mechanism 3; the edge of the mirror surface area of the rear die core 2150 is provided with at least two arc channel-shaped structures 2152 which are distributed annularly and have arc slope-shaped transition at two ends, a clearance 2155 is arranged between the arc channel-shaped structures 2152, and the clearance 2155 is provided with an ejection pin hole 2153; the demolding mechanism 3 includes at least two ejector pins 2060, and an ejector device installed on one side of the ejector pins 2060, and the ejector device is configured to drive the ejector pins 2060 to slide telescopically along the ejector pin holes 2153.

Specifically, the demolding mechanism 3 is arranged on the movable mold 2, so that the deformation problem of the ultrathin optical lens with great thickness ratio and severe edge bending at the movable mold side during molding and demolding can be effectively solved, and the high-precision production of the product is ensured; the arc channel-shaped structure 2152 enables the assembly bearing surface of the optical lens to have very high precision after demolding, assembly precision among the lenses is guaranteed, the clearance 2155 can prevent burrs of the ejection pin 2060 from being higher than the assembly bearing surface of the lenses during demolding, assembly parallelism and air gaps between the optical lens and other parts are effectively prevented from being affected, and product yield is improved; the ejection device is used for driving the ejection pins 2060 to slide in a telescopic manner along the ejection pin holes 2153 on the rear mold core 2150, so that the ejection pins 2060 can eject and demold a product, the arrangement of the two or more ejection pins 2060 can ensure that the stress of the optical lens is more uniform in the demolding process, the surface accuracy is very high after demolding, and the problem of Asia Si caused by steep surface of the lens is solved.

Further, the edge of the mirror surface area of the rear mold core 2150 is provided with three arc channel-shaped structures 2152 which are distributed annularly and have arc slope-shaped transition at two ends, the three arc channel-shaped structures 2152 are arranged on the edge of the rear mold core 2150 annularly at 120 degrees, each two arc channel-shaped structures 2152 are provided with a clearance position 2155, therefore, the rear mold core 2150 is provided with three clearance positions 2155, each clearance position 2155 is provided with an ejection pin hole 2153, and the ejection pin holes 2153 are respectively arranged at intervals of 120 degrees; three ejector pins 2060 are inserted through the three ejector pin holes 2153, respectively, and the upper end of each ejector pin 2060 is thicker and the lower end thereof is thinner, and the thinner end thereof is in contact with the flange of the optical lens. The concave part in the center of the upper surface of the rear mold core 2150 is a mold cavity 2151, which is a nano-scale optical surface that is ultra-precisely machined by using a single-point diamond. The fixed mold 1 includes a front mold core 2110, the front mold core 2110 is opposite to the rear mold core 2150, the front mold core 2110 is not provided with an ejection pin hole 2153, and the lens ejection is performed by an ejection pin 2060 on the movable mold side. The optical lens 2130 is molded in a mold cavity (cavity) between the front mold core 2110 and the rear mold core 2150. The surface types of the upper and lower surfaces of the optical lens are completely the same as the surfaces of the mold cavities of the front and rear mold cores.

Furthermore, the surface of the clearance 2155 is a plane or an arc-shaped curved surface; the section profile of the clearance 2155 is in a wave shape with slope-shaped and arc-shaped transition at two sides or a plurality of arc-shaped sections; the surface of the clearance keeping position 2155 is higher than the arc channel-shaped structure 2152, and the surface of the clearance keeping position 2155 is flush with or close to the flange plane at the edge of the rear die core 2150; the cross-sectional shape of the ejector pin 2060 is circular, square, triangular, polygonal, circular, or asymmetric.

The ejection device comprises an ejection pin fixing plate 3100 arranged on the moving die 2, a compression spring 2030 arranged on one side of the ejection pin fixing plate 3100, and withdrawal guide columns 2160 arranged around the ejection pin fixing plate 3100; the ejector pin 2060 is mounted on the ejector pin fixing plate 3100. Specifically, when the optical lens 2130 is demolded, the ejector rod of the injection molding machine pushes the movable mold side ejection pin fixing plate 3100, the ejection pin fixing plate 3100 pushes the ejection pin 2060 to eject the optical lens 2130 smoothly, after the optical lens 2130 is demolded, the ejection pin fixing plate 3100 is driven to reset under the action of the elastic force of the compression spring 2030, and the withdrawal guide post 2160 and the ejection pin 2060 are driven to reset respectively, wherein the strokes of the withdrawal guide post 2160 and the ejection pin 2060 are both 0.2mm-50 mm.

The movable mold (or rear mold) 2 includes a rear mold fixing plate 2190, mold legs 2180 installed at both sides of the rear mold fixing plate 2190, a supporting plate 2170 installed at one side of the mold legs 2180, a rear mold plate 2140 installed at one side of the supporting plate 2170, a nozzle ejector pin 2260 installed on the ejector pin fixing plate 3100, and a side guide rod 3200 installed around the mold legs 2180 or the supporting plate 2170.

Specifically, the rear mold core 2150 is mounted on the rear mold plate 2140, the ejector pin fixing plate 3100 is mounted between the rear mold fixing plate 2190 and the supporting plate 2170, the compression spring 2030 is mounted between the ejector pin fixing plate 3100 and the supporting plate 2170, the water gap ejector pins 2260 penetrate through the supporting plate 2170 and the rear mold plate 2140, the number of the rear mold cores 2150 is more than two, in order to improve the production efficiency, the number of the rear mold cores 2150 is preferably eight in this embodiment, and the eight rear mold cores 2150 are arranged on the rear mold plate 2140 in a circumferential array.

In addition, the fixed mold (or front mold) 1 comprises a front mold fixing plate 2090, a front mold plate 2120 arranged on the front mold fixing plate 2090, at least two front mold cores 2110 arranged on the front mold plate 2120, insert fixing screws 2010 arranged on the front mold fixing plate 2090, guide rod fixing bolts 2100 arranged around the front mold plate 2120, a sprue bush 2080 arranged in the middle of the front mold fixing plate 2090, and a runner 2139 communicated with the sprue bush 2080, wherein the movable mold side guide rods 3200 are in sliding connection with the guide rod fixing bolts 2100.

Specifically, the number of the front mold cores 2110 is the same as that of the rear mold cores 2150, and the positions of the front mold cores 2110 are matched with those of the rear mold cores 2150. In this embodiment, it is preferable that the number of the front mold cavity 2110 is eight, and since the optical lens 2130 is ejected out of the movable mold side, the front mold cavity 2110 is not provided with an ejection pin. The optical lens 2130 is molded in a mold cavity (i.e., a cavity) between the front mold core 2110 and the rear mold core 2150, the surface shapes of the upper and lower surfaces of the optical lens 2130 are completely the same as those of the front and rear mold cores, and the surfaces of the mold cavities of the front mold core 2110 and the rear mold core 2150 are both processed by nano-scale single-point diamond ultra-precision machining, so that the precision of the lens surface shape after injection molding can reach the nano-scale of an ultra-mirror surface. Insert set screw 2010 is fixedly connected to front core 2110 by passing through front template 2120. In addition, the rear mold core 2150 is provided with a glue inlet 2154 communicated with the flow passage 2139, and the plurality of optical lenses 2130 are connected with each other through the flow passage 2139.

During injection molding, liquid plastic heated to a molten state enters the runner 2139 and each mold cavity through a hole in the middle of the sprue bush 2080, and an optical lens 2130 product is formed after pressure maintaining molding, cooling and solidification. One end of the water gap thimble 2260 penetrates through the supporting plate 2170 and the rear mold plate 2140 in sequence to contact with the flow channel 2139 and cool the flow channel 2139, after the optical lens 2130 is molded and cooled, in the process that the injection molding machine pulls the movable mold 2 open and the movable mold side guide rod 3200 is used as a guide to perform demolding, the water gap thimble 2260 ejects and separates the cooled flow channel 2139, because the optical lens 2130 has steeper surface type bending on the movable mold 2 and has larger surface adhesive force after being cooled and is attached to the mold cavity surface of the rear mold core 2150 of the movable mold 2, the cooled optical lens 2130 simultaneously pushes the movable mold side ejection pin 3100 fixing plate 3100 through the ejector rod of the injection molding machine, the ejection pin fixing plate pushes the ejection pin 2060 to eject the optical lens 2130 smoothly, when the ejection pin 2060 ejects the optical lens 2130, the guide column 2160 is withdrawn and simultaneously protrudes out the mold parting surface of the rear mold plate 2140, and after the optical lens 2130 is demolded, under the action of the elastic force of the compression spring 2030, the compression spring 2030 drives the ejection pin fixing plate 3100 to reset, and the ejection pin fixing plate 3100 drives the withdrawal guide columns 2160 and the ejection pins 2060 to reset respectively.

Example two

As shown in fig. 11-14, the utility model also provides a precise optical lens product for moving die side drawing of patterns, including the surface be the smooth mirror surface region 91 of nanometer precision, set up the flange disc 92 of the round outside mirror surface region 91, the periphery of flange disc 92 is provided with two at least boss structures 93 that the both ends head that the annular distributes has the transition of circular arc slope shape, is provided with between per two boss structures 93 and has the transition of circular arc slope and subtract gluey position 94, boss structure 93's shape characteristic is opposite with the shape of arc channel shape structure 2152 of back mould benevolence 2150, and position and quantity are corresponding, the shape characteristic that subtracts gluey position 94 is opposite with the shape of the clearance position 2155 of back mould benevolence 2150, and position and quantity are corresponding.

The glue reduction site 94 is lower than the upper surface of the boss structure 93, the glue reduction site 94 is close to or flush with the plane of the flange disc 92, and the glue reduction site 94 can contact with the ejector pin 2060.

Specifically, in the present embodiment, the boss structure 93 is disposed on the flange disk 92 at a side away from the convex side of the middle of the mirror surface region 91 and in a ring shape.

The boss structure 93 is a lens assembly support surface for ensuring the positional accuracy when assembled with other lenses or components (e.g., mylar sheet, spacer). The raised structures 93 are between 10 microns and 500 microns above the end face of the flange disk 92, and the raised structures 93 are preferably 35 microns above the flange disk 92 in this embodiment.

When the ejector pins 2060 are withdrawn after the demolding is completed, even if the burrs exist, the burrs and flaws caused by the ejector pins 2060 do not affect the assembling accuracy of the optical lens because the glue reducing positions 94 are lower than the assembling bearing surface of the optical lens. The assembling parallelism and the air gap between the lens assembling bearing surface and other lenses can not be influenced, the injection molding precision and the qualification rate of the product are improved, and the optical lens product can adapt to ultrathin high-precision lens demoulding with great thickness ratio and severe edge bending.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.

Claims (16)

1. A precise die for side demoulding of a movable die comprises a fixed die (1) and the movable die (2), and is characterized in that the movable die (2) comprises at least two rear die cores (2150), and a demoulding mechanism (3) is arranged on the movable die (2);

the edge of the mirror surface area of the rear mold core (2150) is provided with at least two arc channel-shaped structures (2152) which are distributed annularly and have arc slope-shaped transition at two ends, a vacancy avoidance position (2155) is arranged between the arc channel-shaped structures (2152), and an ejection pin hole (2153) is arranged on the vacancy avoidance position (2155);

the demolding mechanism (3) comprises at least two ejector pins (2060) and an ejector device arranged on one side of each ejector pin (2060), and the ejector device is used for driving the ejector pins (2060) to slide in a telescopic mode along the ejector pin holes (2153).

2. A precision die for moving die side demolding according to claim 1, wherein the ejector means comprises an ejector pin fixing plate (3100) provided on the moving die (2), a compression spring (2030) provided on one side of the ejector pin fixing plate (3100), withdrawal guide posts (2160) provided around the ejector pin fixing plate (3100);

the ejection pin (2060) is arranged on the ejection pin fixing plate (3100).

3. A precision die for die-side demolding as claimed in claim 2, wherein the stroke of said withdrawal guide post (2160) or said ejector pin (2060) is between 0.2mm and 50 mm.

4. A precision mold for moving mold side demolding according to claim 1, wherein eight rear mold cores (2150) are provided on the moving mold (2).

5. A precision mold for side demolding as claimed in claim 1, wherein the number of the arc-shaped channel structures (2152) is three, and the arc-shaped channel structures are arranged at the edge of the mirror surface area on the rear mold core (2150) in a 120 ° ring shape.

6. The precise mold for side demolding of a movable mold according to claim 1, wherein the rear mold core (2150) is provided with a glue inlet (2154).

7. A precision die for moving-die side release according to claim 1, wherein the surface of the void-avoiding portion (2155) is a flat surface or an arc-shaped curved surface.

8. The precise die for side demoulding of the movable die as claimed in claim 1, wherein the cross-sectional profile of the vacancy-avoiding portion (2155) is a wave shape with slopes on two sides and arc transitions or a plurality of arc segments.

9. The precise mold for side demolding of movable mold according to claim 1, wherein the surface of the clearance (2155) is higher than the arc-shaped channel-shaped structure (2152), and the surface of the clearance (2155) is flush with or close to the flange plane of the edge of the rear mold core (2150).

10. A precision die for moving-die side demolding according to claim 1, wherein the cross-sectional shape of said ejector pin (2060) is circular, square, triangular, polygonal, circular, or asymmetric.

11. The precise mold for side demolding of the movable mold according to claim 2, wherein the movable mold (2) comprises a rear mold fixing plate (2190), mold legs (2180) installed at both sides of the rear mold fixing plate (2190), a supporting plate (2170) installed at one side of the mold legs (2180), a rear mold plate (2140) installed at one side of the supporting plate (2170), nozzle ejector pins (2260) installed on an ejector pin fixing plate (3100), and movable mold side guide rods (3200) installed around the mold legs (2180) or the supporting plate (2170);

the rear die core (2150) is arranged on the rear die plate (2140), the ejection pin fixing plate (3100) is arranged between the rear die fixing plate (2190) and the supporting plate (2170), the compression spring (2030) is arranged between the ejection pin fixing plate (3100) and the supporting plate (2170), and the water gap ejector pin (2260) penetrates through the supporting plate (2170) and the rear die plate (2140).

12. A precision mold for moving mold side demolding as claimed in claim 1, wherein said fixed mold (1) comprises a front mold fixing plate (2090), a front mold plate (2120) mounted on the front mold fixing plate (2090), at least two front mold cores (2110) mounted on the front mold plate (2120);

the number of the front mold cores (2110) is the same as that of the rear mold cores (2150), and the positions of the front mold cores (2110) are matched with those of the rear mold cores (2150).

13. The precise mold for demolding the movable mold side as claimed in claim 12, wherein the fixed mold (1) further comprises insert fixing screws (2010) arranged on the front mold fixing plate (2090), guide rod fixing bolts (2100) arranged around the front mold plate (2120), a sprue bush (2080) arranged in the middle of the front mold fixing plate (2090), and a runner (2139) communicated with the sprue bush (2080), wherein the insert fixing screws (2010) penetrate through the front mold plate (2120) and are fixedly connected with the front mold core (2110).

14. A precise optical lens for moving mold side demolding, which is manufactured by the precise mold for moving mold side demolding according to any one of claims 1 to 13, and which comprises a mirror surface area (91) with a nanoscale precision smooth surface, a flange disc (92) arranged in a circle outside the mirror surface area (91), at least two boss structures (93) with circular arc slope-shaped transition at two ends and distributed annularly are arranged on the periphery of the flange disc (92), a glue reducing position (94) with circular arc slope transition is arranged between every two boss structures (93), the shape characteristics of the boss structures (93) are opposite to the shape of the arc channel-shaped structure (2152) of the rear mold core (2150) and correspond to the positions and the number of the boss structures, the shape characteristics of the glue reducing position (94) are opposite to the shape of the clearance position (2155) of the rear mold core (2150), and the positions and the number correspond to each other.

15. A precision optical lens for moving mold side demolding according to claim 14, wherein the glue reduction site (94) is lower than the upper surface of the boss structure (93), the glue reduction site (94) is close to or flush with the plane of the flange disc (92), and the glue reduction site (94) can contact with the ejector pin (2060).

16. A precision optical lens for dynamic mold side demolding according to claim 14, characterized in that the distance of the boss structure (93) above the flange disc (92) is between 10 and 500 μm.

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