KR20150108703A - Cutting system for injection molding lens - Google Patents

Abstract

Disclosed is a system for cutting an injection molding lens for preventing a defective product from occurring during cutting and for automatically cutting and collecting a lens from a lens injection molding object. According to an embodiment of the present invention, the system for cutting an injection molding lens comprises: a bed; a jig placed on the bed with a groove corresponding to the shape of a lens injection molding object on the top surface on which the lens injection molding object is mounted; a plurality of cutting modules with a worktable where a top cutter, a bottom cutter, and a lens injection molding object to be cut are to be placed on the bed in the direction of an X-axis, wherein the cutting speed is controlled as the moving speeds of the top cutter and the bottom cutter are controlled when a lens is cut and separated from the lens injection molding object; a scrap discharge unit installed on the bed to discharge the lens injection molding object when work is completed to the outside of the bed; a transfer for moving the lens injection molding object in the jig to a first cutting module, moving the lens injection molding objet in the cutting module to the next cutting module, and moving the lens injection molding object in the last cutting module to the scrap discharge unit; a sorter for moving the lens cut in the cutting module to a tray and loading it; a jig driving unit placed on the bed to let the jig move in between the first position for the lens injection molding object to be placed on the jig and the second position to which the lens injection molding object is moved by the transfer; and a local controller for controlling the cutting modules, transfer, sorter, and jig driving unit.

Description

{Cutting system for injection molding lens}

The present invention relates to an injection lens cutting system, and more particularly, to an injection lens cutting system for cutting and separating a lens from a lens injection product mass-produced by an injection molding machine.

In general, a plastic lens is superior to a glass lens in terms of material cost and productivity, and thus is widely used for a cellular phone camera, a disk pickup device, and the like.

Generally, when a small product is to be injected, a plurality of products are molded into a single molded product in order to reduce the consumption of materials such as tangs and gates and increase the working efficiency. Therefore, it is necessary to cut each product from the injection product.

Such a plastic lens is formed by injection molding an injection molded article 1 of a lens in which a plurality of lenses connected by a runner 3 are integrally formed as shown in Fig. 1, .

As a method for cutting and separating the lens from the lens mold, there is a method of manually cutting the lens 5 from the molded article 1 of the lens with a cutting knife using a cutting jig or using a laser or ultrasonic wave.

However, in the method of cutting by hand, there is a problem that a defect occurs when the lens 5 is cut from the gate 2, and productivity is low.

In addition, although the ultrasonic wave or laser method takes less time than the manual cutting method, there is a problem that a foreign substance is generated at the time of cutting and adheres to the lens surface or the cutting surface is not smooth.

An object of the present invention is to provide an injection lens cutting system for automatically cutting a lens from an injection lens and automatically collecting the lens while preventing a defect in a product during cutting.

An injection lens cutting system according to a preferred embodiment of the present invention comprises a bed; A jig disposed on the bed and having a groove corresponding to the shape of the lens mold on the upper surface thereof to seat the lens mold; An upper cutter, a lower cutter, and a work table on which the lens cutter to be cut is mounted, the lens cutter being disposed in the X-axis direction on the bed, wherein when the lens is cut and separated from the lens cutter, A plurality of cutting modules whose cutting speed is controlled according to the cutting speed; A scrap discharging unit installed on the bed for discharging the finished photocatalyst to the outside of the bed; Wherein the lens insert in the jig is a first cutting module, the lens insert in the cutting module is a next cutting module, and the lens insert in the last cutting module is a transfer to a scrap discharge; A sorter for moving the cut lens from the cutting module to the tray; A jig driving unit disposed on the bed and adapted to move the jig between a first position in which the lens ejection is seated in the jig and a second position in which the lens ejection is moved by the transfer; A local controller for controlling the cutting module, the transfer, the sorter, and the jig drive unit; . ≪ / RTI >

The injection lens cutting system according to the present invention has the effect of automatically cutting the lens from the lens mold and automatically collecting it.

In addition, the injection lens cutting system according to the present invention has the effect of preventing foreign matter from being generated at the time of cutting the lens and making the cut surface clean, thereby preventing defects from occurring.

In addition, the injection lens cutting system according to the present invention is controlled by an external controller through an interface, thereby performing various operations as needed.

In addition, the injection lens cutting system according to the present invention can prevent the occurrence of process bottleneck caused by inconsistency between the injection cycle time of the lens mold and the time required for the cutting operation of the cutting module, thereby improving the productivity.

1 is a perspective view showing a lens extruded article in which several lenses are integrally formed by a runner;
2 is a perspective view of an injection lens cutting system in accordance with a preferred embodiment of the present invention.
3 is a plan view of the injection lens cutting system of FIG. 2;
Figure 4 is a perspective view of the transfer of the injection lens cutting system of Figure 2;
Figure 5 is a perspective view of a sorter of the injection lens cutting system of Figure 2;
Figure 6 is a perspective view of the jig and jig drive unit of the injection lens cutting system of Figure 2;
Figure 7 is a perspective view of the cutting module of the injection lens cutting system of Figure 2;
Fig. 8 is a view showing an elevating unit of the cutting module of the injection lens cutting system of Fig. 2; Fig.

The present invention will now be described in detail with reference to the accompanying drawings. Here, the same reference numerals are used for the same components, and a detailed description of known functions and configurations that may unnecessarily obscure the gist of the present invention will be omitted. Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art. Accordingly, the shapes, sizes, etc. of the elements in the drawings may be exaggerated for clarity.

Figure 2 is a perspective view of an injection lens cutting system according to a preferred embodiment of the present invention, Figure 3 is a perspective view of the injection lens cutting system of Figure 2, Figure 4 is a perspective view of the transfer of the injection lens cutting system of Figure 2, Fig. 6 is a perspective view of the jig and jig driving unit of the injection lens cutting system of Fig. 2, Fig. 7 is a perspective view of the cutting module of the injection lens cutting system of Fig. 2, And FIG. 8 is a view showing an elevating unit of the cutting module of the injection lens cutting system of FIG.

The injection lens cutting system 1000 shown in FIGS. 2 to 3 includes a bed 600, a scrap discharge unit 200, a jig 300, a jig driving unit 400, a cutting module 100, a transfer 500, A sorter 700, and a local controller (not shown).

The bed 600 can be a general table for processing operations, as shown.

The scrap discharging part 200 is provided on the bed 600 so as to be inclined so that the lens is cut and separated and the scrap which is the remaining lens forming material is discharged out of the bed 600 by its own weight.

The jig 300 is disposed on the bed 600, and the lens ejection molded from the ejector is seated. Therefore, a seating groove 310 corresponding to the shape of the sprue and the runner of the lens mold is formed on the upper surface of the jig 300 so that the lens mold can be stably fixed.

The jig driving unit 400 is disposed on the bed 600 and is disposed between the first position L1 in which the lens ejection is seated in the jig 300 and the second position L2 in which the lens ejection is moved by the transfer 500 The jig 300 is moved. 6, the jig driving unit 400 includes a linear motion guide 410 disposed at a lower portion of the jig 300 to guide movement of the jig 300, And a pneumatic cylinder 420 for transmitting power to the jig 300. [

The cutting module 100 is installed in the Y axis direction on the bed 600 with the upper cutter 30 and the lower cutter 40 and the work table 50 on which the lens projection to be cut is placed. In addition, the cutting speed is controlled as the moving speed of the upper cutter 30 and the lower cutter 40 is controlled when the cutting module 100 cuts and separates the lens from the lens mold.

7, the cutting module 100 includes a base 10, a support 20 vertically installed on the base 10, a support 20 mounted on the support 20 for cutting and separating the lens from the lens 20, An upper cutter 30 and a lower cutter 40 that are installed on the lower side of the upper cutter 30 to cut and separate the lens together with the upper cutter 30 and a lower cutter 40 located on the base 10, A lifting unit 60 for lifting and lowering the upper cutter 30 and the lower cutter 40 and a third position L3 at which the sorter 700 grips the lens, A grip portion 80 for moving the lens, and a rotation unit 85 for rotating the work table 50. [

The elevating unit 60 may be composed of a servo motor 61 and a cam portion (not shown) as shown in FIG. The cam portion lifts the upper cutter 30 and the lower cutter 40 as the servomotor 61 rotates in the forward and reverse directions. Specifically, the cam portion includes a horizontal moving block 62 that linearly moves left and right as the servomotor 61 rotates in the forward and reverse directions, an LM guide 63 that guides horizontal movement of the horizontal moving block 62, a horizontal moving block 62, An upper cutter 30 vertically moving in conjunction with the horizontal movement of the horizontal moving block 62, and an LM guide (not shown) guiding the vertical movement of the lower cutter 40 64), and a spring (not shown) for moving the upper cutter 30 and the lower cutter 40 up and down after cutting.

Since the cutting module 100 according to the preferred embodiment of the present invention can cut while freely adjusting the cutting speed, no foreign matter is generated during cutting, and the cut surface is smooth and does not cause defects. Further, by including the rotation unit 85, it is possible to continue cutting another lens at the same cutting position without moving the upper cutter 30 and the lower cutter 40 or resetting the lens extrusion. Thus, the productivity is improved. As the rotary unit 85, a servo motor, a step motor, a cylinder motor, or the like can be used.

A plurality of cutting modules 100 are provided. Since a plurality of cutting modules 100 are provided to divide and perform the cutting operation, it is necessary to cut and separate the lenses of all the cavities (meaning the number of products molded into one injection product) Even if the time is longer than the injection cycle time of the lens extrudate (including the time taken out from the injection machine), the operation time of one cutting module 100 can be shorter than the injection cycle time. Therefore, it is possible to prevent the occurrence of a process bottleneck due to inconsistency between the injection cycle time of the lens mold and the time required for the cutting operation of the cutting module 100, thereby improving the productivity.

Further, although not shown, the cutting module 100 may be arranged in a plurality of rows and a plurality of rows. By arranging the cutting module 100 in a plurality of rows and a plurality of rows, it is possible to prevent the occurrence of a process bottleneck caused by inconsistency between the injection cycle time and the cutting operation time of the injection molding, thereby improving the productivity.

The transfer 500 includes a lens cutout in the jig 300 as a first cutting module 100, a lens cutout in the cutting module 100 as a next cutting module 100, 100 are moved to the scrap discharging unit 200.

4, the transfer 500 includes a plurality of first holders 610 and a first holder 610 capable of grasping and releasing a lens projection and moving the first holder 610 in the Y-axis direction and the Z- And a first holder moving unit (not shown).

The first holder 610 may be made of a pneumatic gripper. The first holder moving unit has a first holder 610 at the lower portion thereof equally spaced therebetween and includes a horizontal conveying table 620 to which a rail 630 of an EL guide guiding a Y axis movement is coupled, A carriage 635 of a guide is coupled to the carriage 635 of the carriage 635 and a vertical conveying table 660 to which a rail 650 of an LM guide for guiding up and down in the Z- A pneumatic cylinder 640 that provides power to move the vertical transfer belt 660, a pneumatic cylinder 640 that provides power to move the vertical transfer belt 660, one end of which is coupled to the vertical transfer belt 660, And a support table 670 coupled to the carriage 655 of the guide to support the transverse conveying table 620, the vertical conveying table 660, and the like.

The sorter 700 moves the cut lens from the cutting module 100 to the tray and loads it. The sorter 700 includes a plurality of second holders 710 capable of grasping and releasing the lens, and a second holder moving unit for moving the second holder 710 in the X-axis and Y-axis directions. The second holder 710 for grasping and releasing the lens may be a suction device using air pressure.

As shown in FIG. 5, the second holder moving unit is formed in a U-shape with two parallel X-axis guide bars 780 having an L-shaped guide 760 on one side and placed in the X-axis direction, Axis guide bar 730 coupled to the carriage of the L-shaped guide 760 of each X-axis guide bar 780 and moving along the X-axis guide bar 780. The Y-axis guide bar 730 is also provided with an LM guide 720 on one side thereof and the second holder is coupled to the carriage 725 of the LM guide and is movable along the Y- have. The Y-axis guide bar 730 moves along the X-axis guide bar 780 and the second holder 710 moves along the Y-axis guide bar 730 to generate and transmit a driving force to the servo motor 740 A belt pulley 750, a belt 745, and the like.

The structure of the second holder moving unit for moving the second holder in the X and Y axis directions has been described. However, this is only one example, and the present invention is not limited to the above embodiment, The detailed description of the known constitution which is not related to the present invention is omitted.

The cutting module 100, the transfer 500, and the sorter 700 may be controlled by a local controller.

Further, the injection lens cutting system 1000 according to the present invention may further include an injection material withdrawing unit (not shown) for withdrawing the lens injection object from the injection device and seating the lens injection object on the jig 300.

In addition, although not shown in the drawing, the injection lens cutting system 1000 according to the present invention may further include an interface for allowing a local controller to transmit / receive signals to / from an external controller. The injection lens cutting apparatus according to the present invention is controlled by an external controller through the interface so that the injection lens cutting apparatus according to the present invention can perform not only a fixed operation but also various operations that can be changed as needed . Accordingly, the injection lens cutting apparatus according to the present invention can be utilized for various applications.

Hereinafter, the operation of the injection lens cutting system 1000 according to the preferred embodiment of the present invention will be described with reference to the accompanying drawings.

First, the lens cavity of the four cavities injected from the injector is taken out by the injection material withdrawing unit and is placed on the jig 300 which is stopped at the first position (L1). It is also possible that the lens extrusion is mounted on the jig 300 manually as required. The upper surface of the jig 300 is formed with grooves into which the sprue and runner of the lens ejection can be inserted, so that the lens exit is stably fixed when placed on the jig 300.

The jig 300 on which the lens moldings are placed is moved by the jig driving unit 400 from the first position L1 to the second position L2 where the lens 500 is moved by the transfer 500.

Next, the three first holders 610 in the transfer 500 are moved and lowered by the first holder moving unit to move the jig 300, the work table 50 of the first cutting module 100, (50) of the lens barrel (100).

Next, the lens ejection in the jig 300 is moved and seated by the first holder moving unit to the work table 50 of the first cutting module 100.

Next, the work table 50 of the cutting module 100 is rotated by 90 ° by the rotation unit 85 of the cutting module 100 to change the lens to be cut and separated.

Next, the work table (50) of the cutting module (100) moves to the cutting position where the cutter is located, so that the lens extrudate is cut.

Next, the upper cutter 30 and the lower cutter 40 of each cutting module 100 are driven to cut and separate the lens.

The separated and cut lens is moved to the third position L3 where the sorter 700 grips the lens by the grip portion 80 and the sorter 700 sucks the lens at the third position L3, Move the lens to the tray.

While the cut lens is loaded on the tray by the sorter 700, the work table of the cutting module 100 is moved to the second position L2 again, and then rotated 90 degrees to cut the second lens . The worktable 50 rotated 90 degrees is moved to the cutting position again to perform the cutting operation of the second lens.

When the work table 50 is returned to the second position L2 in a state where two lenses among the four lenses attached to the lens mold are cut and separated, the transfer 500 transfers the lens mold to the next cutting module 100 And the remaining two lenses are cut and separated by the second cutting module 100. At this time, since the transfer 500 is taken out of the injection machine and a new lens mold that is seated in the jig 300 is moved to the first cutting module 100, the first cutting module 100 and the second cutting module 100 The cutting operation is performed in all the cutting modules 100.

The lens is cut and separated at the cutting position, and the lens is cut and separated at the cutting position by the 90 ° rotation at the second position (L2) When all four lenses of the lens mold in the cutting module 100 are cut and separated, the lens mold is discharged to the scrap discharging portion. Two lenses out of the four lenses are cut and separated, The lens mold is moved to the second cutting module 100.

After that, it is drawn out from the injection machine and put on the jig. → Cutting and cutting two lenses in the first cutting module. → Cutting and separating the lens from the lens mold while separating the remaining two lenses from the second cutting module. .

Whether or not a few lenses are cut from one cutting module 100 and then moved to the next cutting module 100 can be changed by the injection cycle time of the injection lens including the drawing time, the number of the cutting modules 100, and the like.

The above operation can be controlled by the local controller, and it can be controlled by an external controller by having an interface capable of transmitting / receiving with an external controller.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation and that those skilled in the art will recognize that various modifications and equivalent arrangements may be made therein. It will be possible. Accordingly, the true scope of protection of the present invention should be determined only by the appended claims.

10: base 20: support
30: upper cutter 40: lower cutter
50: work table 60: lift unit
80: grip portion 85: rotation unit
100: cutting module 200: scrap discharging part
300: jig 310: seat groove
400: jig drive unit 500: transfer
600: Bed 610: First holder
620: transverse conveying stand 630: rail of the EL guide
635: carriage of LM Guide 640: pneumatic cylinder
660: vertical conveying belt 670: support
680: Pneumatic cylinder 700: Sorter
710: second holder 720: pneumatic cylinder
725: carriage of the LM Guide 730: Y-axis guide bar
740: Servo motor 745: Belt
750: Belt Pulley 720: LM Guide
760: LM Guide 780: X-axis guide bar
L1: first position L2: second position
L3: Third position

Claims (8)

Bed;
A jig disposed on the bed and having a groove corresponding to the shape of the lens mold on the upper surface thereof to seat the lens mold;
An upper cutter, a lower cutter, and a work table on which the lens cutter to be cut is mounted, the lens cutter being disposed in the X-axis direction on the bed, wherein when the lens is cut and separated from the lens cutter, A plurality of cutting modules whose cutting speed is controlled according to the cutting speed;
A scrap discharging unit installed on the bed for discharging the finished photocatalyst to the outside of the bed;
Wherein the lens insert in the jig is a first cutting module, the lens insert in the cutting module is a next cutting module, and the lens insert in the last cutting module is a transfer to a scrap discharge;
A sorter for moving the cut lens from the cutting module to the tray;
A jig driving unit disposed on the bed and adapted to move the jig between a first position in which the lens ejection is seated in the jig and a second position in which the lens ejection is moved by the transfer;
A local controller for controlling the cutting module, the transfer, the sorter, and the jig drive unit;
And an injection lens. The method according to claim 1,
The transfer
And a first holder moving unit moving the first holder in the X-axis direction and moving the first holder in the Z-axis direction. The method according to claim 1,
The sorter
And a second holder moving unit for moving the second holder in the X-axis and Y-axis directions. The method according to claim 1,
The lens cutting module includes:
Further comprising a grip portion for holding the cut lens and moving the cutter to a third position where the cutter grips the lens. The method according to claim 1,
Wherein the injection molded lens cutting module comprises:
Further comprising a rotation unit for rotating the work table. The method according to claim 1,
Further comprising an injection material withdrawing unit for withdrawing the lens injection object from the injection device and placing it on the jig. The method according to claim 1,
Further comprising an interface that allows the local controller to send and receive signals to and from an external controller. The method according to claim 1,
Wherein the cutting module is arranged in a plurality of rows and a plurality of rows.

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