KR101955027B1 - jig for fixing core - Google Patents

Abstract

The present invention relates to a fixing jig for processing a core for lens injection molding. Adjustment is possible according to a diameter of a core as split brackets divided on a fixing bracket are separated by a predetermined distance. The lower end and the upper end of the core can be respectively supported. By extending versatility of the jig, the limitation of a use can be overcome. It is possible to reinforce product competitiveness through precise surface processing by preventing shaking of the core. To this end, the fixing jig for processing a core for lens injection molding, which is for fixing the core to a core processing apparatus formed in a mold and performing surface processing on one surface of the core to form a surface of a lens through an injection scheme, comprises: a fixing bracket (110) which has one end fixed to a core (20) located at the center by means of a coupling means; and a plurality of division brackets (120) which are seated on one surface of the fixing bracket (110), are formed to be bisected, and are in close contact with each of both ends of the core (20) fixed to the center of the fixing bracket (110), thereby versatilely supporting the core (20) regardless of the diameter of the core (20).

Description

[0001] The present invention relates to a jig for fixing core for lens injection molding,

The present invention relates to a fixing jig for core processing for lens injection molding, and more particularly, to a jig for fixation for lens injection molding which is capable of adjusting a diameter of a core of a fixing bracket, The upper end of each of the upper and lower ends of the jig can be supported so as to increase the versatility of the jig to overcome the limitations of use and to prevent the core from shaking and to enhance product competitiveness through precise surface machining. .

In general, mobile communication devices such as mobile phones, smart phones and PDAs are being utilized as multi-convergence such as music, movie, TV, game as well as simple telephone functions along with the development of the technology. The lens module built into the digital camera continues to evolve to a center of high resolution exceeding 10 million pixels.

Accordingly, research and development has been continuously carried out to improve the performance of the camera module in high resolution and high image quality. As the performance of the small communication device has become various, the digital still camera can be installed to store and transmit image data, It was.

In order to integrate a digital still camera into a compact communication device, miniaturization of a digital still camera must be preceded, and in order to improve the image compression and restoration technology and the technology improvement of a multimedia product peripheral device along with the development of a digital technology Lenses for mobile cameras are becoming thinner and smaller.

Further, the development of an aspheric plastic lens capable of controlling various types of aberrations in which the shape and the shape of a subject are deformed by the influence of incident light having various kinds of wavelengths inputted at the time of imaging of a subject, .

There is provided a mold apparatus for injection molding a plastic product.

For example, Korean Patent No. 445222 provides a mold apparatus capable of smoothly performing a take-out operation by forming a stopper on a product during an injection molding process.

Korean Patent No. 725789 provides a mold apparatus and an ejecting method thereof for improving the structure and method for ejecting an ejected product.

Korean Patent No. 817689 discloses an undercut injection mold apparatus in which a pair of slide cores for injection molding an undercut portion are interlocked with each other in a direction facing each other with a rack gear and a pinion gear.

Korean Patent No. 1053889, as shown in Fig. 1, includes a stationary-side mold base and upper and lower cassettes mounted in the receiving space of the movable-side mold base.

The stationary mold base includes a first fastening plate 13 having a locating 11 and a sprue bush 12 mounted at the center thereof and an upper circular plate 14 provided at a lower portion of the first fastening plate 13 Respectively.

The upper cassette is disposed on the upper circular plate 14 and is composed of an upper plate 32 and an upper fixed plate 33 which are processed into a lens a shape.

The movable mold base includes a second fastening plate 23 provided with a rod rod 22 at the center thereof, a pedestal 24 provided on the second fastening plate 23, and a lower circular plate 24 provided on the pedestal 24 25).

The lower cassette is composed of a lower plate 35 and a lower fixing plate 36 which are disposed on the lower disk 24 and are processed into a shape of a lens a.

It is also preferable that spacing plates 37 are provided on both sides between the lower plate 35 and the lower plate 36 and the product a is held between the spacing plates 37, And a plate 39 on which the holding pin 38a and the milipin 38b are mounted.

The support plate 24 of the movable mold base is provided with a guide bush 26 for guiding the sliding movement of the rod 22 and the guide bush 26 is provided on the lower end of the rod 22 The elastic member 21 is mounted.

Therefore, the rod end of the rod rod 22 presses the plate 39 held between the gap holding plates 37 in the lower circular plate 25 to take out the molded product a.

On the other hand, an injection molding core is used for the lens molding die apparatus, and the core is processed through a core processing apparatus for surface roughness processing up to a nanometer.

Further, a separate jig is used to allow the core to be firmly fixed in order to process the surface roughness of the core to the nanometer through the core processing device.

A conventional core machining apparatus includes a table 1 and a chuck 2.

The table 1 fixes the jig 10 to which the core 20 is fixed by vacuum suction.

Further, the table 1 rotates.

The chuck 2 is configured at a position corresponding to the table 1 and performs surface machining for one end of the core 20 through the bit 30 as the bit 30 is fixed to one side do.

However, since the jig for fixing the conventional core simply keeps only a part of the lower end of the core, there is a problem that precise core surface processing can not be performed due to the swinging of the upper part of the core due to the rotation moment.

Further, there is a problem in that, as one end of the core shakes, the expensive bit is broken during processing.

In addition, since the conventional jig keeps the state of fitting according to the diameter of the core, there is a problem that the versatility of manufacturing a separate jig is lost when the diameter of the core is changed.

Korean Patent No. 10-1053889 (issued April 4, 2011) Korean Patent No. 10-1155560 (Announcement of Jun. 19, 2012) Korean Patent No. 10-1418473 (Announced 2014.07.22)

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems, and it is an object of the present invention to provide a bracket which is divided into a plurality of fixing brackets and which can be adjusted according to the diameter of the core, The present invention is to provide a fixing jig for use in a core for lens injection molding which is capable of widening the versatility of the jig to overcome limitations of use and to prevent shaking of the core to enhance product competitiveness through precise surface machining.

According to an aspect of the present invention, there is provided a lens injection molding method for molding a lens for injection molding a core for fixing the core to a core processing apparatus, which is provided in a mold and performs surface processing on one surface of the core, A fixing jig for processing, comprising: a fixing bracket for fixing one end of a core positioned at the center by fastening means; And a pair of brackets fixed to one side of the fixing bracket so as to be mutually divided so as to be able to support the core in a universal manner regardless of the diameter of the core, And a plurality of split brackets which are arranged to be spaced apart from each other.

In the present invention, the fixing bracket is formed at the center with an insertion hole into which a fastening means for fastening one end of the core is inserted; And a finishing cap inserted into the insertion hole to close the insertion hole into which the fastening means is inserted to enable a stable fixing state to be maintained by a vacuum suction force through the table.

In the present invention, it is preferable that the fixing bracket includes a protrusion rod which protrudes at a predetermined height and is symmetrically formed to support the division bracket so that the reciprocating sliding of the division bracket can be smoothly performed.

In the present invention, the split bracket may include: a support portion that is seated on one surface of the fixing bracket; And a protrusion formed to protrude at a predetermined height from a center end of the receiving portion; Preferably, the raised portion includes a seating groove that closely contacts an upper portion of the core to prevent the core from shaking when the core is rotated.

In the present invention, the seating groove preferably has a rhombus shape.

In the present invention, it is preferable that the raised portion includes a depressed groove formed in a space having a certain depth recessed inwardly, so that it is applicable to a core having a stepped structure.

In the present invention, the fixing brackets are provided with a plurality of fastening holes in a direction symmetrical to each other; The split bracket preferably includes a rectangular second insertion hole which is seated on the fixing bracket and which is reciprocated according to the diameter of the core and is fixed and fixed to the fastening hole by the fastening means when the fastening position is set Do.

According to the present invention, since the divided brackets divided into the fixed brackets can be adjusted according to the diameter of the core while being spaced by a certain distance, and the lower and upper ends of the core are supported to increase the versatility of the jig, Thereby preventing the core from shaking and enhancing the product competitiveness through precise surface machining.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a configuration diagram of a mold apparatus for molding a camera lens according to a conventional example; FIG.
2 is a schematic diagram of a conventional core processing apparatus.
3 is a perspective view of a fixing jig according to the present invention;
4 is an engaging sectional view of a fixing jig with a single-tanged core fixed according to the present invention.
Fig. 5 is a front view of Fig. 4; Fig.
FIG. 6 is an assembled cross-sectional view of a fixing jig in a state where a straight core according to the present invention is fixed; FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, as well as the manner in which it may be achieved, will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings.

However, it should be understood that the present invention is not limited to the embodiments disclosed herein but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Thus, in some embodiments, well known process steps, well-known structures, and well-known techniques are not specifically described to avoid an undue interpretation of the present invention.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular forms include plural forms unless otherwise specified in the specification.

It is to be understood that the terms comprise and / or comprise are used in a generic sense to refer to the presence or addition of one or more other elements, steps, operations and / or elements other than the stated elements, steps, operations and / It is used not to exclude.

And "and / or" include each and every one or more combinations of the mentioned items.

Further, the embodiments described herein will be described with reference to cross-sectional views and / or schematic drawings that are ideal illustrations of the present invention.

Accordingly, the embodiments of the present invention are not limited to the specific forms shown, but also include changes in the shapes that are generated according to the manufacturing process.

In addition, in the drawings of the present invention, each constituent element may be somewhat enlarged or reduced in view of convenience of explanation.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The fixing jig 100 for processing a core for lens injection molding according to the present invention includes a fixing bracket 110 and a split bracket 120, as shown in Figs.

Accordingly, the fixing jig 100 can be used for general purpose without regard to the diameter of the core 20, thereby overcoming the limitation of use.

The fixation jig 100 prevents the core 20 from being arbitrarily shaken by the rotation moment due to the fixing force applied to the upper end portion of the core 20 so that the bit 30 during processing is damaged .

The one end of the fixing bracket 110 is firmly fixed to the table 1 by the vacuum suction force.

In addition, an insertion hole 112 into which the fastening means is inserted is formed at the center of the fixing bracket 110 to fix one end of the core 20 by fastening means.

The insertion hole 112 is formed with a finishing cap 130 for fixing one end of the core 20 through the fastening means and closing the insertion hole 112.

When the fixing bracket 110 is seated on the table 1 by finishing the finishing cap 130 to close the insertion hole 112, the vacuum suction force acting on the table 1 is not dispersed The fixing force of the fixing bracket 110 is improved.

Of course, the present invention is not limited thereto, and the closure cap 130 may be omitted.

A part of the split bracket 120 is inserted into the other end of the fixing bracket 110 to constitute a plurality of protruding rods 114 protruding at a predetermined height in order to intercept the distance of conveyance.

In this case, it is preferable that the protruding rods 114 are formed to be mutually symmetrical.

This is because, when the fixing bracket 110 rotates, when the protruding rods 114 are eccentric rather than symmetrically, eccentric rotational force acts on the core 20 to interfere with the precise surface machining of the core 20 .

In addition, a plurality of fastening holes 116 are formed in the fixing bracket 110.

The fastening hole 116 seats the split bracket 120 divided at the upper end of the fixing bracket 110, and fixes the position of the split bracket 120 by fastening means.

Further, the fastening holes 116 are formed to have a predetermined depth from one surface of the fixing bracket 110.

The reason why the fastening hole 116 is formed at a certain depth is that when the fixing bracket 110 is placed on the table 1 and then suctioned by the vacuum suction force of the table 1, .

In addition, the fastening holes 116 are each formed of a plurality of two or more in each of the divided brackets 120.

The split brackets 120 are formed on the one end face of the fixing bracket 110 so as to be divided into two so that the split brackets 120 can be universally used without being limited to the diameter of the core 20 by mutual tightening.

In this case, since the split brackets 120 are configured to be symmetrical to each other, the configuration of one split bracket 120 will be described for convenience of explanation.

The split bracket 120 is composed of a receiving portion 122 and a raised portion 124.

The receiving portion 122 is seated on one surface of the fixing bracket 110.

In addition, the receiving portion 122 is formed in a flat plate shape.

A guide hole 1222 through which the protrusion rod 114 of the fixing bracket 110 is inserted is formed in the receiving portion 122.

The guide hole 1222 is formed in a rectangular shape so as to guide the split bracket 120 to be reciprocally slid over a predetermined length based on the protruding rod 114.

Further, the guide hole 1222 is formed at the center portion.

A second insertion hole 1224 is formed in the receiving portion 122 so that the receiving portion 122 can be firmly fixed by being fastened to the fastening hole 116 of the fixing bracket 110 by fastening means.

In this case, the second insertion holes 1224 are formed at both ends of the guide hole 1222, respectively.

The second insertion hole 1224 is formed in a rectangular shape so that the fixing bracket 120 can be securely fixed in a state in which the seating distance of the split bracket 120 is adjusted.

In addition, the second insertion hole 1224 is formed in a step structure so that the fastening means, that is, the head portion of the bolt can maintain the depression state without protruding to the surface of the receiving portion 122.

The raised portion 124 is formed on one end surface of the split bracket 120 so as to support the core 20 at a central portion of the split split bracket 120 configured to be mutually symmetrical.

A seating groove 1242 is formed at the center of the protruding portion 124 so that one end of the core 20 can be tightened and supported.

In this case, the seating groove 1242 is formed in a groove shape that guides the circular core 20 to be concentrically positioned.

For example, the seating groove 1242 is rhombic.

The raised portion 124 is formed with a recessed groove 1244 having a predetermined depth inwardly downward from the top.

The depression grooves 1244 may be formed in the same diameter depending on the purpose or shape of the core 20, or may be formed in a stepped structure in some cases.

The operation of the fixing jig for processing the core for lens injection molding as described above will be described below.

First, the core 20 is seated in the center of the fixing bracket 110.

The fastening means is inserted into the insertion hole 112 formed at the center of the back surface of the fixing bracket 110 so that one end of the core 20 seated in the center of the fixing bracket 110 is fastened by the fastening means, Fixed.

Then, the finishing cap 130 is inserted into the insertion hole 112 to close the insertion hole 112 of the fixing bracket 110.

Subsequently, each of the split brackets 120, which are divided into two, is seated on the front surface of the fixing bracket 110.

At this time, the protrusion rod 114 of the fixing bracket 110 is inserted into the guide hole 1222 of the split bracket 120 so that the split bracket 120 is reciprocally slid with respect to the protrusion rod 114 do.

One side of the core 20 is seated in the seating groove 1242 formed in the ridge 124 of the split bracket 120 so that the divided split brackets 120 are brought into close contact with each other.

Further, when the position is set by the close contact of the split bracket 120, the fastening means is inserted into the plurality of second insertion holes 1224 formed in the split bracket 120.

One end of the fastening means is fastened to the fastening hole 116 of the fastening bracket 110 formed to correspond to the second insertion hole 1224 so that the fastening bracket 120 is securely fastened .

The divisional bracket 120 divided by the fixing bracket 110 can be adjusted in accordance with the diameter of the core 20 through the operational relationship so that the versatility of the jig can be increased to overcome the limitation of use do.

In addition, since the lower end portion and the upper end portion of the core can be fixed and supported at the same time by the divided bracket 120 divided by the fixing bracket 110, shaking at the time of rotation can be prevented,

The above description is only one embodiment for implementing the fixing jig for core processing for lens injection molding, and the present invention is not limited to the above-described embodiment. It will be understood by those skilled in the art that various changes may be made without departing from the spirit of the invention.

100: Fixing jig 110: Fixing bracket
112: insertion hole 114:
116: fastening hole 120: split bracket
122: receiving portion 1222: guide hole
1224: second insertion hole 124: ridge
1242: seating groove 1244: recessed groove
130: Finishing cap

Claims (7)

1. A fixing jig for fixing a core to a core processing apparatus which is formed in a mold and performs surface processing on one surface of the core so as to form a lens surface through an injection method,
A fixing bracket 110 for fixing one end of the core 20 positioned at the center by fastening means; And
And are fixed to the opposite ends of the core 20 fixed to the center of the fixing bracket 110 so as to be adhered to one side of the fixing bracket 110, And a plurality of split brackets (120) for universally supporting the core (20)
The fixing bracket (110)
An insertion hole 112 formed at the center and into which a fastening means for fastening one end of the core 20 is inserted;
A closure cap (130) inserted into the insertion hole (112) to close the insertion hole (112) inserted with the fastening means and to maintain a stable fixed state by a vacuum suction force through the table (1);
Protruding rods (114) for supporting the split brackets (120) formed to be symmetrically formed to protrude at a predetermined height so that the reciprocating sliding of the split brackets (120) can be smoothly performed;
And a plurality of fastening holes (116) formed in mutually symmetrical directions on one side,
The split bracket (120)
A receiving part 122 seated on one surface of the fixing bracket 110;
A guide hole 1222 formed in the receiving portion 122 to receive the protrusion rod 114 of the fixing bracket 110;
A raised portion 124 protruding at a predetermined height from one end of the center of the receiving portion 122;
A seating groove 1242 in which the upper portion of the core 20 is in close contact with the raised portion 124 to prevent the core 20 from shaking when the core 20 is rotated;
And a fixing jig for processing the core for lens injection molding.
delete delete delete The fixing jig for a core for lens injection molding according to claim 1, wherein the seating groove (1242) has a rhombic shape.
[3] The apparatus according to claim 1, wherein the ridge portion (124)
A depression groove 1244 for forming a space having a predetermined depth recessed inside so as to be applicable to the core 20 having a stepped structure;
And a fixing jig for processing the core for lens injection molding.
The method according to claim 1,
The split bracket 120 is mounted on the fixing bracket 110 and is reciprocated according to the diameter of the core 20 so that the split bracket 120 is fastened and fixed to the fastening hole 116 by fastening means A rectangular second insertion hole 1224;
And a fixing jig for processing the core for lens injection molding.

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