KR20050045693A - Processing apparatus for injection molding lens - Google Patents

Abstract

The present invention relates to an injection molding lens processing apparatus which cuts and loads a lens from a gate of a lens injection molded mass produced by an injection molding machine.

The present invention is a rotation unit for rotating the lens injection material supplied from the injection machine 180 degrees; A transfer unit configured to transfer the lens injection parts rotated 180 degrees by the rotation unit at regular intervals; A mounting portion to which the lens injection molding is mounted to cut the lens; A moving part which moves the lens injection product conveyed by the conveying part to the mounting part; A cutter for cutting a gate of the lens injection molded product mounted on the mounting part; A lens pickup unit which picks up and moves the lens cut by the cutter; A plurality of lens receiving portions into which a plurality of lenses are loaded; A magazine equipped with the plurality of lens receiving portions; It is composed of a charging unit for loading the lens moved through the lens pickup unit to the lens receiving unit mounted in the magazine.

Description

Injection molding lens processing apparatus {Processing Apparatus for Injection Molding Lens}

The present invention relates to an injection molding lens processing apparatus, and more particularly, to an injection molding lens processing apparatus that cuts and loads a lens from a gate of a lens injection mass produced by an injection molding machine.

In general, a small plastic lens, that is, a lens used in an optical pickup device of an optical disk drive, is manufactured by injection molding using a mold for mass production.

1 illustrates a lens injection product 10 in an intermediate process manufactured by injection molding a lens used in an optical pickup device of an optical disc drive.

The lens 15 is manufactured by an injection method using a mold, and for forming a large amount, a lens forming part for forming several lenses in one mold is formed. As a result, the injection molded product uses a molten material as shown in FIG. 1. The lens 15 is formed together with the runner 11 and the gate 12 for supplying to the formation portion.

That is, the lens injection molded product 10 has a runner 11 protruding from the center portion in a vertical direction, and each of the four gates 12 is formed in the shape of a tree branch symmetrically, and each gate ( A lens 15 is formed at the tip of 12).

Therefore, it is necessary to separate and load the lens 15 from the lens injection product 10 as described above, and the device for obtaining the lens 15 from the lens injection product 10 is commonly referred to as a gate cutting device.

Conventional technology for such a gate cutting device is disclosed in Korean Laid-Open Patent Publication No. 1999-0043370. Here, a detailed description of the gate cutting device disclosed in the above publication will be omitted. However, according to the conventional gate cutting device disclosed, by loading the injection molded product into the cutting device, by separating the lens and the runner when the cutting operation is completed to load only the lens on a separate stick for loading, such as by the operator, There is a problem that the overall processing time of the late, not only the working precision is lowered, but also the loss due to detachment of the lens during loading on the stick.

And, the Republic of Korea Patent Registration No. 10-0386670 "Injection gate cutting apparatus and method" is introduced, but the problem that may occur on the surface of the lens in the process of loading in the case of the technique disclosed in the publication, jig In the case of the negative side, the lens formed at one end of the gate cannot be gripped stably, and thus the cutting surface is not smoothly formed.

In addition, since the structure of the magazine housing the lens does not match the shape of the lens, there is a problem that the lens may be damaged during movement.

Accordingly, the present invention has been made in view of the problems of the prior art, and an object thereof is to provide an injection molding lens processing apparatus which cuts and loads a lens from a lens injection without damage.

In order to achieve the above object, the present invention is a device for cutting a lens from the lens injection molding formed by the injection machine, comprising: a rotating unit for rotating the lens injection material supplied from the injection machine 180 degrees; A transfer unit configured to transfer the lens injection parts rotated 180 degrees by the rotation unit at regular intervals; A mounting portion to which the lens injection molding is mounted to cut the lens; A moving part which moves the lens injection product conveyed by the conveying part to the mounting part; A cutter for cutting a gate of the lens injection molded product mounted on the mounting part; A lens pickup unit which picks up and moves the lens cut by the cutter; A plurality of lens receiving portions into which a plurality of lenses are loaded; A magazine equipped with the plurality of lens receiving portions; Provided is an injection molded lens processing apparatus comprising a charging unit for inserting the lens moved through the lens pickup unit into the lens receiving unit mounted in the magazine.

The rotating part includes a gripping means for gripping the lens injection molded product supplied by injection molding, a rotating means for rotating the gripping means, and lifting means for moving the rotating means up and down.

The mounting portion is a pusher for generating a linear driving force, a cam mounted on one end of the pusher and the opposite surface is tapered, a cam joint connected between the pusher and the cam to adjust the moving distance of the cam, the lens injection molding A lens seating base to which the lens is mounted on the lens seating base, a cam guide mounted to one end of the lens seating base to guide movement of the cam, a hinge portion fixed to an intermediate portion of the lens seating base, and the hinge portion A pair of chucking bars formed with a pair of bearings having opposite working points facing each other and having a pair of bearings contacting both sides of the cam at one end thereof and a chucking finger for holding a lens at the other end thereof, the hinge portion of the chucking bar and the chucking fingers. It consists of a tension spring mounted in between to open the chucking fingers.

The lens receiving portion is formed in a structure similar to the cross-sectional shape of the lens is formed of a pallet formed with a plurality of lens receiving grooves for receiving the plurality of lenses in a row, or formed in a structure similar to the cross-sectional shape of the lens a plurality of lenses It consists of a cartridge formed with a receiving groove that is accommodated in a row.

The charging unit is provided with a lifting plate that can move up and down, a lens guide installed in the lifting plate to guide the lens so that the position of the lens receiving groove formed in the lens housing mounted on the magazine and the lens guide groove, the lens guide groove A lens pusher for pushing the lens when the lens is moved and mounted to the front end of the lens picker, a pusher holder for mounting the lens pusher, and a pusher driving part for pushing or pulling the lens pusher by reciprocating the pusher holder It is composed.

(Example)

Hereinafter, with reference to the accompanying drawings showing a preferred embodiment of the present invention described above in more detail.

The injection molding lens processing apparatus according to the present invention cuts and separates the lens 15 from the lens injection product 10 having the structure as shown in FIG. 1, and loads the lens 15 on the pallet 95. As shown in (B), one surface is formed with a relatively small radius of the first convex surface 15a based on the circular edge 15c, and the other surface has a relatively large radius of the second convex surface 15b. ) Is formed.

The lens injection molded product 10 injection-molded from the injection machine is transferred to the transfer unit 30 mounted on the rotating unit 20 and transferred in a horizontal direction while being rotated 180 degrees, and the transfer unit 30 is set at a predetermined pitch interval in advance. The lens injection product 10 is transferred, and the lens injection product 10 arriving at a predetermined position is lifted by the moving part 40 and moved to the mounting part 60.

The mounting unit 60 serves to grip and fix the lens 15 of the mounted lens injection product 10, and the gate 12 is cut by the cutter 75 in the mounted state.

The lens 15 cut from the gate 12 is moved to the charging unit 80 by the lens pick-up unit 77, and the charging unit 80 mounts the lens to the pallet-type magazine 90. Will charge in.

The rotating unit 20 is for transferring the lens injection molded product 10 which is supplied by injection molding from the injection molding machine to the transfer unit 30. To this end, a holding means for holding the lens injection product 10 and a rotation for rotating the holding means. Means, and the lifting means for moving the rotating means up and down, as shown in Figure 3, the detailed structure, as shown in Figure 3, the rotary bracket 21 mounted on the base 100, the up and down direction relative to the rotary bracket 21 Elevating block 22 that can move to the first block 23 mounted on the elevating block 22, the second block 24 mounted on the first block 23, the second block 24 A rotation block 25 rotatably mounted with respect to the rotation block 25, first and second gripping means 27 and 29 and the second gripping means mounted on the rotation block 25 to hold the lens injection product 10. The first plate holding means is mounted And a gripping driver 26 for reciprocating the plate 28.

As shown in FIG. 4, the transfer part 30 includes a pair of first rails 31, a pair of second rails 32 disposed between the first rails 31, and a lower portion of the second rails. An elevating bracket 37 connected to the elevating means, an elevating means 36 for elevating the elevating bracket 37 by about 10 mm, and an LM guide 35 mounted to the base 100 vertically downward of the first rail 31. ), A pair of LM bases 33 mounted on the front and rear ends of the LM guide 35 and the front and rear cylinders 34 for advancing and moving the pair of LM bases 33 at a predetermined interval (70 mm). And an elevating LM 38, 39 connected between the second rail 32 and the LM base 33 to elevate the second rail 32.

As shown in FIG. 5, the moving part 40 includes a first moving part bracket 41 mounted vertically to the base 100 and a second moving part bracket mounted vertically to the moving part bracket 41. 42), a moving part rail 43 mounted in parallel to the second moving part bracket 42, a horizontal block 44 movably mounted to the moving part rail 43, and a horizontal block 44. A third moving part bracket 45 to be mounted, a vertical rail 46 mounted to the third moving part bracket 45, a vertical block 47 mounted to be movable in a vertical direction on the vertical rail 46, A fourth bracket 48 fixed to the vertical block 47, a horizontal rail 49 mounted in a horizontal direction on the fourth bracket 48, and a vertical block mounted on the horizontal rail 49 so as to be movable horizontally; 50, a chucking block 51 mounted vertically downward on the termination block 50, and mounted on the chucking block 51 in a horizontal direction. It consists of a pair of chucking plates 52 capable of reciprocating in the furnace, and a pair of moving part fingers 53 mounted on the pair of chucking plates 52, respectively.

The mounting unit 60 and the cutter 75 are configured as shown in Figs. 6 to 8, first, the mounting unit 60 is a pusher 62 mounted on one side of the mounting base 61, the pusher 62 Cam 67 is mounted on one end of the cam 67 having a tapered shape, the cam joint 63 is connected between the pusher 62 and the cam 67 to adjust the moving distance of the cam 67, The lens seating base 64 mounted on the other side of the mounting part base 61, a cam guide 65 mounted to one end of the lens seating base 64 to guide the movement of the cam 67, and the lens seating base. Hinge portion 69 fixed to the middle portion of the 64, a pair of bearings 70 contacting both sides of the cam 67 inside the hinge portion 69 and its working point is oppositely mounted. A pair of chucking bars 68 and chucking fingers 72 formed at the other end thereof and holding chucking lenses 72. Consists of the portion 69 and the chucking fingers 72 spring 71 is mounted between the tension to open the chucking fingers 72 out.

The cutter 75 is installed below the mounting unit 60 to cut the lens 15 from the gate 12 of the lens injection molded product 10 mounted on the mounting unit 60.

The lens pick-up unit 77 is for picking up the lens 15 separated from the gate 12 by the mounting unit 60 and the cutter 75, and two pairs of lens fingers 78 are provided. The lens picked up by the pair of lens fingers 78 moves to the charging unit 80 one by one.

Before describing the charging portion 80, the pallet 95 will be described with reference to FIG.

The pallet 95 is for accommodating and moving a plurality of lenses 15, and a plurality of lens receiving grooves 96 are formed. The cross-sectional shape of the lens receiving grooves 96 is a cross-sectional shape of the lens 15. It is formed in a structure similar to (see FIG. 1 (B)), which is to prevent the lens 15 from moving during the movement in the state in which the lens 15 is inserted into the pallet 95, and the lens 15 has the first convex surface. Since the edge 15c is formed at the edges of the 15a and the second convex surface 15b, portions other than the edge 15c portion, that is, the first convex surface 15a and the second convex surface 15b portion, are formed. This is to prevent contact with other parts of the pallet 95.

The pallet 95 having the structure as described above is mounted on the detachable magazine 90, and the pallet type magazine 90 is formed in a box form mounted on a detachable support bar 91. It consists of a vertical wall 93 and the upper and lower plates 92 in which the groove 94 into which the pallet 95 is inserted is formed. In the embodiment of the present invention, the pallet 95 in a row has been described with respect to the pallet type magazine 90 having two pallet receiving portions. However, in some cases, the pallet 95 may have one or three or more structures.

Meanwhile, although the pallet type magazine 90 as shown in FIGS. 9 and 10 has been described as an apparatus for storing the lens 15 in the above description, the present invention provides a cartridge type magazine as shown in FIGS. 98) may be used.

The cartridge type magazine 98 uses a cartridge 99 as shown in FIG. 11, and the cartridge 99 has a structure similar to the cross-sectional shape of the lens 15 in which the lens receiving groove 99a is formed. In the structure, the support end 99b is formed in the lower end in order to prevent damage to the lower surface of a lens.

The cartridge 99 having the above structure is mounted in the cartridge type magazine 98 as shown in FIG. 12 and used together with the pallet type magazine 90. The cartridge type magazine 98 has an upper and lower plate 98a. A support plate 98b having a plurality of cartridge accommodating grooves 99c formed therein is connected to both ends and an intermediate portion of the c).

The following description will be made using the pallet type magazine 90 among the two types of magazines, but in the case of the cartridge type magazine 98, which is another magazine, the same except that the cartridge 99 is used instead of the pallet 95. Is used.

As shown in FIG. 9, the charging unit 80 which loads the lens 15 into the pallet 95 mounted on the pallet type magazine 90 having the above-described structure, can move up and down 85. A vertical plate 81 vertically connected to the elevating base 85, a motor 82 providing a rotational force to elevate the elevating base 85, and a vertical plate connected to a rotating shaft of the motor 82. Rotating bar 83 is installed in parallel to the 81, fixed to the vertical plate 81 and connected to the rotating bar 83 rotatably so that the vertical plate 83 in accordance with the rotation direction of the rotating bar 83 ) And the elevating block 84 for elevating the elevating base 85, the position of the lens receiving groove 96 formed in the pallet 95 mounted on the pallet type magazine 90, and the lens guide groove 89a coincide with each other. A lens guide 89 and the lens guide groove 89a installed to guide the lens 15. The lens pusher 88 and the lens pusher 88 which push the lens 15 when the lens 15 is moved and mounted by any one set of lens fingers 78 of the lens pickup portion 77 at the tip of the lens pick-up unit 77. The pusher holder 87 is mounted, it is composed of a pusher driving unit 86 for pushing or pulling the lens pusher 88 by reciprocating the pusher holder 87.

Here, since the lens pinker 78 of the lens pickup portion 77 is composed of two sets of four, and the charging portion is also composed of two sets, each pair of lens fingers 78 has different loading portions. Transfer the lens.

The present invention configured as described above operates as follows.

The lens injection molded product 10 formed by the injection molding machine is gripped by the first and second holding means 27 and 29 of the rotating unit 20 and is seated on the transfer unit 30 by being rotated 180 degrees.

The lens injection molded product 10 seated on the transfer unit 30 is advanced by 70 mm by the forward and backward cylinders 34 and is transferred to a preset position, that is, the initial position of the moving unit 40.

Subsequently, the moving part 40 catches and lifts the lens injection product 10 with the moving part finger 53 and moves the mounting part 60 to the mounting part 60.

The lens injection product 10 moved to the mounting unit 60 is mounted such that the lens 15 is positioned on the chucking finger 72 of the mounting unit 60.

The lens 15 is fixed by a chucking finger 72 formed at one end of the chucking bar 68 by a cam 67 that is advanced by the pusher 62.

At this time, since the chucking bar 68 is symmetrically driven about the hinge 69, the chucking bar 68 serves to fix the lens 15 at a predetermined position so as not to be swayed to either side.

As described above, the cutter 75 moves while the lens 15 is fixed to cut the contact portion between the lens 15 and the gate 12.

In order to prevent the synthetic resin powder from being suspended in the air and attached to the surface of the lens 15 by electrostatic force when being cut, an ionized air supply unit 73 for supplying ionized air is shown in FIG. 8. It is provided above the mounting part 60.

As described above, the eight lenses 15 are formed by two pairs of lens fingers 78 of four pairs of lens pick-up units 77 in the state in which the lens 15 is cut by the cutter 75 from the gate 12. Is picked up and moved to the eight distal ends of the lens guide groove (89a) of the lens guide (89).

As described above, the eight lenses 15 positioned at the distal end of the lens guide groove 89a are pushed into the lens receiving groove 96 of the pallet 95 by pushing the lens pusher 88.

When all the lenses 15 are pushed into one pallet 95 in the same manner as described above, the motor 82 is lifted and the lifting base 85 is lifted to put the next pallet 95 in the next pallet 95. The lens guide 89 is positioned at the height of ().

The present invention made as described above the lens by inhibiting the damage to the surface of the lens 15 in the process of separating and cutting the lens 15 attached to the lens injection molding 10 discharged from the injection molding machine to the maximum To improve the quality of the effect.

In the above, the present invention has been illustrated and described with reference to specific preferred embodiments, but the present invention is not limited to the above-described embodiments and the general knowledge in the technical field to which the present invention pertains without departing from the spirit of the present invention. Various changes and modifications will be made by those who possess.

1 is an exemplary view for explaining the structure of a lens injection molded product.

2 is a perspective view for explaining a schematic structure of an injection molding lens processing apparatus according to the present invention;

Figure 3 is a perspective view for explaining the structure of the rotating part of the present invention.

Figure 4 is a perspective view for explaining the structure of the transfer unit of the present invention.

Figure 5 is a perspective view for explaining the structure of the moving part of the present invention.

Figure 6 is a perspective view for explaining the structure of the mounting portion of the present invention.

7 is a plan view for explaining the operation of the mounting portion of the present invention.

Figure 8 is a side view for explaining the operation of the mounting portion and the cutter of the present invention.

Figure 9 is a perspective view for explaining the structure of the charging unit and pallet type magazine of the present invention.

10 is a perspective view for explaining the structure of a pallet according to the present invention;

Figure 11 is a perspective view for explaining the structure of the cartridge according to the present invention.

Figure 12 is a perspective view for explaining the structure of the cartridge type magazine according to the present invention.

Explanation of symbols on the main parts of the drawings

10 lens injection 15 lens

20: rotating part 30: transfer part

40: moving part 60: mounting part

75: cutter 77: lens pickup

80: charging unit 90: pallet type magazine

95: Pallet 98: Cartridge Type Magazine

99: cartridge

Claims (6)

An apparatus for cutting a lens from a lens injection molded product formed by an injection machine, Rotating unit for rotating the lens injections supplied from the injection machine 180 degrees; A transfer unit configured to transfer the lens injection parts rotated 180 degrees by the rotation unit at regular intervals; A mounting portion to which the lens injection molding is mounted to cut the lens; A moving part which moves the lens injection product conveyed by the conveying part to the mounting part; A cutter for cutting a gate of the lens injection molded product mounted on the mounting part; A lens pickup unit which picks up and moves the lens cut by the cutter; A plurality of lens receiving portions into which a plurality of lenses are loaded; A magazine equipped with the plurality of lens receiving portions; Injection molding lens processing apparatus characterized in that it comprises a charging unit for inserting the lens moved through the lens pickup to the lens receiving unit mounted in the magazine. The method of claim 1, wherein the rotating unit is characterized by comprising a gripping means for holding a lens injection molded injection-molded from the injection machine, a rotation means for rotating the gripping means, and lifting means for moving the rotation means up and down Injection molding lens processing apparatus. According to claim 1, wherein the mounting portion is a pusher for generating a linear driving force, a cam mounted on one end of the pusher and the opposite surface is tapered, connected between the pusher and the cam to adjust the movement distance of the cam A cam joint, a lens seating base to which the lens attached to the lens injection body is seated, a cam guide mounted at one end of the lens seating base to guide movement of the cam, and a hinge fixed to an intermediate portion of the lens seating base A pair of chucking bars formed with a pair of bearings, each of which has a point of action opposite to the branch and the hinge portion, at one end of which is mounted a pair of bearings contacting both sides of the cam, and at the other end thereof, a chucking finger for holding a lens. The tension spring is mounted between the hinge portion and the chucking finger of the chucking finger portion to open out Injection molding lens processing apparatus. The injection molding lens processing apparatus of claim 1, wherein the lens receiving portion is formed in a structure similar to a cross-sectional shape of the lens, and includes a pallet in which a plurality of lens receiving grooves are formed to accommodate the plurality of lenses in a row. The injection molding lens processing apparatus according to claim 1, wherein the lens receiving portion is formed in a structure similar to the cross-sectional shape of the lens, and includes a cartridge having a receiving groove for receiving a plurality of lenses in a row. The lens of claim 1, wherein the charging unit is mounted on the lifting plate to guide the lens such that the lifting plate is movable up and down and the position of the lens receiving groove formed in the lens receiving unit mounted on the magazine coincides with the position of the lens guide groove. A lens pusher that pushes the lens when the lens is moved and mounted to the guide and the tip of the lens guide groove by the lens pickup part, and pushes the lens pusher by reciprocating the pusher holder to which the lens pusher is mounted. Injection molding lens processing apparatus comprising a pusher driving unit for giving or pulling.