KR20170012955A - Cutting method for the injection mold and apparatus of the same - Google Patents

Abstract

The present invention relates to a cutting method of an injection-molded product and a device thereof, which can significantly reduce defective products due to cracks. The cutting method of an injection-molded product according to the present invention comprises the steps of: (a) molding an injection molded product (10); (b) transferring a first plate body (11a) of the injection-molded product (10) to the cutting position through a first conveyor unit (200); (c) inspecting and aligning with dots and character recognition of the injection-molded product (10); (d) cutting a gap between the first plate body (11a) and a gate (12); (e) secondarily cutting one end of the first plate body (11a) which is firstly cut; (f) thirdly cutting the other end of the first plate body (11a) which is secondarily cut; (g) transferring the first plate body (11a) to a packaging device unit through a second conveyor unit; (h) transferring a second plate body (11b) to the cutting position; (i) aligning the direction of the second plate body (11b) transferred to the cutting position; (j) firstly cutting a gap between the second plate body (11b) and the gate (12); (k) secondarily cutting one end of the second plate body (11b) which is firstly cut; (l) thirdly cutting the other end of the second plate body (11b); (m) transferring the second plate body (11b) to the packaging device unit through the second conveyor unit; and (n) repeating the step (b) to (m).

Description

TECHNICAL FIELD [0001] The present invention relates to a method of cutting an injection material,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for cutting an injection material, and more particularly, to an apparatus and a method for cutting an unnecessary portion such as a gate and a runner in an injection- And more particularly, to a method and an apparatus for cutting an injection molded article,

In general, injection molding is one of the most widely used manufacturing methods for molding plastic resin products. In this injection molding, a resin melted in a heating cylinder is injected into a cavity of a closed mold at a high pressure to solidify or cure the resin, thereby producing a molded article corresponding to the cavity shape.

The mold is formed of a material such as metal having excellent heat resistance, and has a plurality of cavities formed in a shape corresponding to an injection product to be manufactured, a sprue into which the molten resin is injected, and a molten resin injected through the sprue into a plurality of cavities And a gate for controlling the flow of the molten resin injected into the cavity so as to have a relatively small cross-sectional area as compared with the runner.

Therefore, the molten resin injected from the nozzle of the injection molding machine is filled with the cavity through the sprue, the runner and the gate of the mold, and then solidified. When the solidified molded product is separated from the mold, the unnecessary parts such as the sprue, So that a post-process for removing an unnecessary portion from the molded product is required.

On the other hand, a display device employed in a terminal such as a cellular phone is equipped with a backlight unit which diffuses light and diffuses light, and the backlight unit is composed of a combination of a frame assembly and optical films. Such a frame assembly is equipped with a transparent light guide plate inside a frame mold constituted by a rectangular frame. The light emitted from the LED disposed on one side of the light guide plate is refracted into the light guide plate and irradiated upward by the surface light source by a reflective film attached to the lower portion of the light guide plate.

The light guide plate is made of a transparent or semitransparent rectangular plate and is formed by injection molding. The light guide plate is formed of a thermoplastic resin such as acrylic resin, polycarbonate, polystyrene, MS resin, polypropylene, polyethylene, high-density polyethylene, which is a copolymer of neetyl methacrylate and styrene. Among them, acrylic resins and polycarbonates having excellent light transmittance are mainly used as molding materials.

As shown in Fig. 1, the light guide plate has rectangular plates 11 on both sides thereof connected by a gate 12, and a runner 13 is disposed at the center of the gate 12.

In the cutting operation of an injection molded article such as a light guide plate, an operator puts the injection molded article 10 on a separate jig, and manually cuts the connection portion between the end of the light guide plate and the gate 12 with a knife, .

However, since such an injection material cutting operation is performed only by hand, there is a problem that a defect rate of a product is high, work productivity is improved, and a worker who is highly skilled in cutting work is required.

Therefore, in order to solve these problems in the related art, an injection material cutting device for cutting an injection material has been developed.

For example, in Korean Patent No. 10-1192376 (hereinafter referred to as Patent Document 1), there is provided a work table having a seat on which a plate is placed, and a touch bar is disposed so as to come in contact with both edges of the plate placed on the seat. And a reciprocating cylinder for reciprocating the touch bar in contact with the edge of one end of the plate body. The other end edge of the plate connected to the gate and the stopper for attaching the cutting device are engaged with each other. And a cutting cylinder for raising and lowering a holder having a cutting blade located directly above the stopper for cutting the cutting tool, wherein the cutter is provided with a cutter cylinder for cutting the cutter, And a cutting portion for cutting the boundary region, wherein the touch bar provided on the reciprocating cylinder for close contact has a bent portion An elastic vertical plate resiliently abutting one side edge of the plate member having a free end is provided so as to be replaceable at the front end thereof and the elastic vertical plate is disposed in an incision section cut in the seat cushion .

However, in the injection material cutting apparatus of Patent Document 1, when the plate of the injection molded article is thin, the cutting face is not smooth when cutting the boundary region between the gates, and the cutting face must be polished again.

Korean Patent No. 10-1439376 (hereinafter referred to as Patent Document 2) discloses an injection molding machine including an injection material supply unit 30 for supplying an injection material to a conveyor and supplying the injection material to the conveyor, A first robot 50 for picking up an injection material from the horizontal fitting portion 30 to move the injection material to a primary cutting position and thereby performing a placing operation; A first cutting portion 60 for cutting the first cutting portion 60 and a first cutting portion 60 for picking the first cutting portion from the first cutting portion 60 and moving the second cutting portion to a second cutting position, A second robot (70) for picking and flipping again to the second cutting position, and a second cutting unit (70) for cutting the portion (A) except for the plate of the second cut or the second cut (80), and a second cut (80) of the second cut A third robot 90 for picking the plate body and moving the plate body to the packing section to perform aplacing; a second robot 90 disposed on one side of the second cutting section 80, A rotating part 100 for rotating the part A and an ejection aligning part 130 for arranging the ejecting part by a plurality of rollers arranged at the lower part of the first cutting part 60 and the second cutting part 80 And a packing unit 150 for packing the plate material of the second cut material using the upper and lower packing rolls. The first robot moves from the loading position to the first cutting position, Is moved from the first cutting position to the second cutting position, and the third robot moves from the second cutting position to the packaging portion.

However, the injection material cutting device of Patent Document 2 includes three robots 50, 70, and 90 and two cutting devices 60 and 80 for cutting and conveying the injection product 10, There is a drawback that the cost is high.

Patent Document 2 discloses a method of sequentially cutting the outer side of the plate body 13 formed on both sides of the injection molded article 10 by using a pair of cutting blades 68a and 68b mounted on the first cutting portion 60, The inner side of the plate body 13 formed on both sides of the injection molded article 10 is sequentially cut by using a pair of cutting blades 88a and 88b mounted on the second cutting portion 80, There is a problem that three or more cutting processes are required.

In Patent Document 2, since the cutting edges of the first and second cutting portions 60 and 80 are configured to be moved up and down along the LM guide by the pneumatic cylinder, Is impossible. Therefore, it is difficult to perform a precise and constant cutting operation, shortening the life of the cutting blade, and causing problems such as poor specification of the product.

In addition, Patent Document 2 discloses that there is no device for verifying whether the molded article 10 seated in the horizontal alignment portion 40 by the first robot 50 is seated in the correct direction, .

In addition, in the conventional method for cutting an injection molded product including the Patent Documents 1 and 2, there is a problem that a crack is frequently generated when a connection portion between the end portion of the light guide plate and the gate 12 is cut, resulting in increased product defects.

Korean Registered Patent No. 1192376 (Notice of October 11, 2012) Korea Registered Utility Model No. 464584 (Announcement of Nov. 11, 2013)

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide an injection molding cutting method and apparatus which can significantly reduce the defective rate of a product when manufacturing a light guide plate from an injection molding product.

Another object of the present invention is to provide a method of manufacturing a semiconductor device, which can significantly reduce a defect rate of a product due to a crack when an unnecessary portion such as a gate and a runner is cut in an injection- The present invention relates to a method of cutting an injection material and a device therefor.

According to another aspect of the present invention, there is provided a method of manufacturing a light guide plate, comprising the steps of: cutting an outer portion of a light guide plate from an unnecessary portion of the light guide plate and cutting an end portion of the light guide plate; And an apparatus for cutting an injection molding material.

According to another aspect of the present invention, there is provided an injection cutting method and apparatus for recognizing the direction of an injection object placed at a cutting position through a vision camera.

The solution to the problem of the present invention is not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

As a means for solving the above-mentioned technical problems, the method of cutting an injection material according to the present invention is characterized in that (a) first and second quadrangular plates 11a and 11b are connected to each other by a gate 12, (10) in which a runner (13) is disposed at the center of the mold (12); (b) transferring the first plate 11a of the injection product 10 to the cutting position through the first conveying unit 200; (c) inspecting the direction of the first plate 11a transferred to the cutting position by dot and character recognition of the injection product 10 through a vision camera, and aligning; (d) first cutting between the first plate 11a and the gate 12 using a first cutting edge; (e) secondarily cutting one end of the first plate 11a, which is first cut after aligning the first plate 11a, using a first cutting edge to fit the size of the product; (f) Cutting the other end of the first plate body 11a, which is opposite to one end of the second cut, after the first plate body 11a is aligned, by using the second cutting blade, step; (g) transferring the first plate body 11a to the packaging unit through the second conveying unit; (h) withdrawing the injection molded article 10 cut from the first plate body 11a from the cutting position through the first conveying unit 200 and rotating the same, and then transferring the second plate body 11b to the cutting position; (i) inspecting the direction of the second plate 11b transferred to the cutting position by dot and character recognition of the injection product 10 through a vision camera, and aligning; (j) firstly cutting between the second plate body 11b and the gate 12 using a first cutting edge; (k) cutting the first end of the second plate body (11b), which is first cut after aligning the second plate body (11b), to a size corresponding to the size of the product using the first cutting edge; (1) Cutting the other end of the second plate body 11b, which is opposite to the second cut end, of the second plate body 11b by a third size to fit the size of the product using the second cutting edge step; (m) transferring the second plate body (11b) to a packaging device part through a second conveying device part; And (n) repeating the steps (b) and (m).

The cutting of the first and second plates 11a and 11b may be cut in the cutting device part 400. [ At this time, the cutting device 400 includes a first server motor 410 that rotates in the forward and reverse directions; A speed reducer 411 for reducing the speed of the first server motor 410; A coupling 412 connected to the speed reducer 411; A first ball screw 414 connected to the rotation shaft 413 of the coupling 412 and rotated; An LM guide 422 moving up and down along the LM rail 430 by rotation of the first ball screw 414; A first cutting device 420 that moves according to the movement of the LM guide 422 and has a first cutting edge 421 disposed at a lower end thereof; A second server motor 440 for forward rotation and reverse rotation; A speed reducer 441 for reducing the speed of the second server motor 440; A coupling 442 connected to the speed reducer 441; A second ball screw 444 coupled to the rotation shaft 443 of the coupling 442 and rotated; An LM guide 452 moving up and down along the LM rail 430 by rotation of the second ball screw 444; And a second cutting device 450 that moves according to the movement of the LM guide 452 and has a second cutting edge 451 disposed at the lower end thereof.

As a means for solving the above-mentioned technical problem, an apparatus for cutting an injection material according to the present invention is characterized in that quadrangular first and second plates 11a and 11b are connected to each other by a gate 12, 12), in which a runner (13) is disposed; The injection body 10 is transferred to align the first plate body 11a at the cutting position and the injection body 10 cut from the first plate body 11a is taken out from the cutting position and rotated, A first conveying unit 200 arranged at a cutting position; A gaging device 300 for aligning the position of the injection molding 10 to cut the injection molding 10 into a cutting position through the first transfer device 200 according to a standard; Cutting the first and second plates 11a and 11b of the gauged molded article 10 at the cutting position in order to cut the gap between the first and second plates 11a and 11b and the gate, A cutting device 400 for cutting an end portion of the plate body after cutting the unnecessary portion from the outside; And a second conveying unit for conveying the first and second plates 11a and 11b, which have been cut by the cutting unit 400, to the packaging unit by a vacuum pad.

Here, the cutting device 400 includes a first server motor 410 for forward rotation and reverse rotation; A speed reducer 411 for reducing the speed of the first server motor 410; A coupling 412 connected to the speed reducer 411; A first ball screw 414 connected to the rotation shaft 413 of the coupling 412 and rotated; An LM guide 422 moving up and down along the LM rail 430 by rotation of the first ball screw 414; A first cutting device 420 that moves in accordance with the movement of the LM guide 422 and has a first cutting blade 421 disposed at the lower end thereof, a second server motor 440 that rotates in the forward and reverse directions; A speed reducer 441 for reducing the speed of the second server motor 440; A coupling 442 connected to the speed reducer 441; A second ball screw 444 coupled to the rotation shaft 443 of the coupling 442 and rotated; An LM guide 452 moving up and down along the LM rail 430 by rotation of the second ball screw 444; And a second cutting unit 450 that moves according to the movement of the LM guide 452 and has a second cutting edge 451 disposed at the lower end thereof.

The first conveying unit 200 includes a conveying bracket 202 movably installed on the conveying rail 201; A transfer cylinder 210 for moving the transfer bracket 202 along the transfer rail 201; An up-down cylinder 220 installed on the transport bracket 202; An up-down bracket 203 which is moved up and down by the up-down cylinder 220; A pneumatic cylinder 230 installed on the up-down bracket 203; A rotating cylinder 240 installed on the up-down bracket 203; A gripper 250 connected to the shaft of the rotating cylinder 240; A linkage 260 connected to the lower end of the gripper 250; And a vacuum pad 270 installed in the connection block 260 and vacuum-holding the injection molding 10 by the pneumatic cylinder 230.

The gaging device unit 300 includes a first and a second unit that advance the stages 340 and 360 to the first and second side surfaces of the molded article 10 mounted on the mounting table 120, respectively, A second reference cylinder (330, 350); First and second push cylinders (310, 370) for advancing the stages (320, 380) so as to contact the third and fourth sides of the molded article (10) to fix the molded article (10) to a cutting position; And micrometers 322 and 342 for precisely adjusting the moving distance of the stage 340 of the first reference cylinder 330 and the stage 320 of the first push cylinder 310. [ have.

According to the present invention, when cutting the gap between the light guide plate and the gate of the injection molded product, the end portion of the light guide plate is cut after the unnecessary portion is cut from the outer unnecessary portion, thereby significantly reducing the defect rate of the product due to the crack.

And, instead of the existing pneumatic cylinder, it is possible to adjust the speed and position of the cutting blade easily by using the server motor, so that the cutting edge of the blade can be smoothly cut to prolong the life of the blade, and it is possible to produce a product with precise and constant size.

In addition, by recognizing the direction of the injection object placed at the cutting position through the vision camera, it is possible to prevent the defective product in advance.

In addition, since it is possible to automate the operation of cutting and removing the injection molding of the plate connected to the gate and the runner, the workability of cutting the plate can be improved and the manufacturing cost can be reduced.

In addition, it offers clean and excellent cutting quality, which improves productivity, improves quality, and improves work environment.

In addition, by aligning the plate body position of the object to be cut in the gaging device portion and precisely cutting the boundary region between the positioned plate body and the gate into a vertically operating cutting edge, It is possible to prevent the assembling failure caused by the length error of the product and to improve the product reliability.

In addition, an automated process can be constructed from the injection of the injection material to the packaging using a conveyor system.

The effects of the present invention are not limited to those mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

Fig. 1 is a perspective view showing an injection molded article 10 having a general plate body.
2 to 13 are views showing an injection molding apparatus 100 according to a preferred embodiment of the present invention,
2 is a perspective view of the injection molding apparatus 100,
3 is a front view of the injection molding apparatus 100,
4 is a rear view of the injection molding apparatus 100,
5 is a left side view of the injection molding apparatus 100,
6 is a right side view of the injection molding apparatus 100,
7 is a plan view of the injection molding apparatus 100,
8 to 9 are views showing a detailed configuration of the injection molding apparatus 100,
10 to 12 are views showing the operation of the first and second cutting device parts 420 and 450,
13 is a plan structural view of the gauging device unit 300. As shown in Fig.
14 is a perspective view of an injection molded article 10 for explaining a method of cutting an injection molding according to a preferred embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly explain the present invention in the drawings, parts not related to the description are omitted, and similar parts are denoted by similar reference numerals throughout the specification.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Embodiment of the Injection Mold Cutting Apparatus 100

2 to 13 are views showing an injection molding apparatus 100 according to a preferred embodiment of the present invention. Fig. 2 is a perspective view, Fig. 3 is a front view, Fig. 4 is a rear view, 8 to 9 are views showing a detailed configuration of the injection molding apparatus 100, and FIGS. 10 to 12 show the first and second cutting device parts 420 and 450 FIG. 13 is a plan view of the gauging device unit 300. FIG.

As shown in FIGS. 2 to 13, the injection molding apparatus 100 of the present invention includes a scrap formed by an injection mold process and composed of a gate 12 and a runner 13, a first and a second substantially square plate- The injection object 10 including the plate bodies 11a and 11b (or light guide plate) is supplied and aligned and the injection object 10 is gripped by the robot and moved to a predetermined position, 1 and the first and second plates 11a and 11b to a predetermined size and then moves it to a predetermined position and packs it.

An apparatus 200 for cutting an object according to an exemplary embodiment of the present invention includes a first transfer unit 200, a gaging unit 300, a cutting unit 400, a second transfer unit (not shown) And a device unit (not shown).

1 and 14, first and second quadrangular plates 11a and 11b are connected to each other by a gate 12, and the center of the gate 12 And a runner 13 may be disposed in the apparatus. The injection molded article 10 may be molded by an injection mold process using a thermoplastic resin.

The first transfer device unit 200 transfers the injection product 10 to align the first plate member 11a at a cutting position and the injection product 10 from which the first plate member 11a has been cut is taken out from the cutting position And aligns the second plate body 11b at the cutting position.

7 to 9, the first conveying unit 200 includes a conveying bracket 202 movably installed on the conveying rail 201 and a conveying bracket 202 movably supporting the conveying rail 202 on the conveying rail 201 An up-down cylinder 220 installed in the transfer bracket 202 and an up-down cylinder 220 which is moved up and down by the up-down cylinder 220. The up- A pneumatic cylinder 230 installed on the up-down bracket 203; a rotating cylinder 240 installed on the up-down bracket 203; A gripper 250 connected to a shaft of the rotating cylinder 240 and a connecting rod 260 connected to a lower end of the gripper 250. The pneumatic cylinder 230 is installed on the connecting rod 260, And a vacuum pad 270 for holding the injection molded article 10 in a vacuum state.

The gripper 250 grips the injection molding 10 using a height difference of a runner (see 13 in FIG. 14). When the injection product 10 is gripped by the gripper 250, the up-down cylinder 220 and the rotary cylinder 240 are operated to place the injection product 10 at the cutting position, (250) up and down.

The first conveying unit 200 is moved laterally along the conveying rail 201 by the conveying cylinder 210 and is moved up and down by the up-down cylinder 220, And can be rotated by the rotating cylinder 240.

The first transfer unit 200 can be configured to pick the injection object 10 with the vacuum pad 270 and move the object to a cutting position and wait at a standby position after the injection. The first conveying unit 200 is configured such that the first sheet body 11a is cut by the cutting unit 400 and the second sheet body 11b is cut Position and wait at the standby position after being Placed.

The first transfer unit 200 picks up the injection material 10 placed on the cutting base 110 with the vacuum pad 270 and transfers the picked material to the cutting position base 120.

The upper surface of the cutting base 110 may be formed along the shape of the injection molding 10 so that the injection molding 10 can be seated. The cutting base 110 may have a plurality of alignment bars 111 arranged along the shape of the injection molding 10 to align the position of the injection molding 10 on the upper portion. At this time, the alignment table 111 is located at the outer periphery of the injection molding 10 and may be installed at one side and the other side of the injection molding 10. In addition, the cutting vest 110 may have a plurality of vacuum inlets for sucking and fixing the injection product 10 by vacuum.

The cutting position unit 120 is disposed at a lower portion of the cutting unit 400, and the cutting position unit 120 is formed of a cutting pedestal 460. At this time, the second plate body 11b of the injection molded article 10 is placed on the cutting position base 120 and the first plate body 11a of the injection molded article 10 is placed on the cutting stand body 460 Or vice versa.

A plurality of vacuum inlets (not shown) are provided on the cutting position base 120 and the upper portion of the cutting pedestal 460 so as to fix the first and second plates 11a and 11b of the injection product 10 by vacuum suction, Lt; / RTI >

The ejection articles 10 placed on the cutting position base 120 and the cutting pedestal 460 are aligned by the gauging device unit 300.

The gaging device 300 may be configured to cut the extruded material 10 to the cutting position 120 through the first transfer device 200 so as to cut the extruded material 10 .

7, 8 and 13, the gaging device 300 includes stages 340 and 360 on first and second sides of the injection molded article 10 mounted on the cutting position base 120, First and second reference cylinders 330 and 350 for advancing each of the first and second reference cylinders 300 and 300 to hold the reference position of the injection molded article 10 and the stages 320 and 380 in contact with the third and fourth sides of the molded article 10, A first push cylinder 310 and a second push cylinder 310 for fixing the stage 340 of the first reference cylinder 330 and the stage 320 of the first push cylinder 310 to the cutting position, And micrometers 322 and 342 that precisely adjust the moving distance.

The first and second reference cylinders 330 and 350 are advanced to the two reference planes of the cutting position where the injection product 10 is to be positioned so that the first and second pushing push cylinders 310 and 370 advance in the direction in which the first and second reference cylinders 330 and 350 are located and push the injection product 10 to align the injection product 10 at the cutting position. In addition, the gaging device 300 also aligns the molded article 10 aligned at the cutting position so as to maintain a horizontal state.

Reference numeral 321 denotes a cam follower connected to the stage 320 to align the injection molding 10 and reference numeral 341 denotes a cam follower connected to the stage 340 so as to move the injection molding 10, And 361 denotes a cam follower connected to the stage 360 for aligning the injection molding 10. The cam follower 361 is a cam follower for aligning the injection molding 10,

The gaging device unit 300 is configured to correspond to various kinds of the injection products 10 by the forward and backward movement of the first and second reference cylinders 330 and 350 and the first and second push cylinders 310 and 370 You can work on it.

Meanwhile, the automatic cutter 100 may further include a vision camera (not shown) for checking whether the injection object 10 inserted into the cutting position is correctly seated. At this time, the vision camera acquires dots and characters formed on the injection object 10 as image images and compares them with reference data, thereby inspecting the seating direction of the injection object 10.

The cutting device 400 cuts the first and second plates 11a and 11b of the gauged molded product 10 using the two cutting blades 421 and 451 in three operations. More specifically, the cutting device 400 includes a second cutting blade 451 between the first plate 11a and the gate 12 of the molded product 10 mounted on the cutting support 460 And then the second end of the first plate body 11a is cut by the first cutting edge 421 in accordance with the size of the product. Thereafter, a first cutting edge 451 is cut between the second plate body 11b and the gate 12 of the molded article 10 mounted on the cutting pedestal 460, And the opposite end of the second plate body 11b is cut by the first cutting edge 421 in accordance with the size of the product.

The cutting device part 400 may include first and second cutting device parts 420 and 450. As shown in FIGS. 1 to 12, the first cutting device 420 includes a first server motor 410 for forward rotation and reverse rotation, a second server motor 410 for slowing down the speed of the first server motor 410, A coupling 412 connected to the speed reducer 411, a first ball screw 414 connected to the rotation shaft 413 of the coupling 412 and rotated, An LM guide 422 that moves up and down along the LM rail 430 by the rotation of the screw 414 and a first cutting edge 421 that moves in accordance with the movement of the LM guide 422 . The second cutting device unit 450 includes a second server motor 440 for forward rotation and reverse rotation, a speed reducer 441 for reducing the speed of the second server motor 440, A second ball screw 444 connected to the rotation shaft 443 of the coupling 442 and rotated by the rotation of the second ball screw 444, And a second cutting unit 450 that moves according to the movement of the LM guide 452 and has a second cutting edge 451 disposed at the lower end thereof. .

The cutting device 400 may include a cutting pedestal 460 under the first and second cutting blades 421 and 451. Third and fourth cutting blades (not shown) facing the first and second cutting blades 421 and 451 may be disposed on the cutting pedestal 460. At this time, the first and second cutting blades 421 and 451 and the third and fourth cutting blades may have an inclination angle. In addition, the first and second cutting blades 421 and 451 may be configured to have an inclination angle, and the third and fourth cutting blades may have a rectangular shape. Accordingly, the first and second cutting blades 421 and 451 and the third and fourth cutting blades (not shown) intersect with each other to cut the first and second plates 11a and 11b of the molded product 10 .

The first cutting device part 420 includes a first cutting blade 421 disposed at the lower end of the LM guide 422 and a second cutting device part 450 disposed at the lower end of the LM guide 452, A blade 451 is disposed. At this time, the LM guide 422 of the first cutting device 420 is configured to move up and down along the LM rail 430 by the first server motor 410, 450 are configured to move up and down along the LM rail 430 by the second server motor 440.

The first and second cutting units 420 and 450 are configured to move the LM guides 422 and 452 along the LM rail 430 to move the first and second cutting blades 421 and 451 more stably . The first and second cutting device parts 420 and 450 are formed by using a cross roller bearing (not shown) in a bracket for fixing the first and second cutting blades 421 and 451 to reduce the tolerance of shaking at the time of cutting. Respectively.

In addition, the speed can be easily adjusted through the first and second server motors 410 and 440, so that smooth and stable cutting can be performed. Therefore, the life of the blade and the standard of the product can be made constant. Since the cutting is performed in a state where the injection molded article 10 is pressed by the first or second server motors 410 and 440 at the time of cutting the plate body 11, the quality of the cut surface of the plate body can be very well ensured.

The cutting device 400 is configured to up-down two cutting blades 421 and 451 using the first and second server motors 410 and 440. However, the first and second server motors 410 and 440 410, and 440) may be configured using a robot.

Subsequently, the second conveying unit (not shown) sucks the first or second plate 11a or 11b of the cut 10 from the cutter unit 400 with a vacuum pad, (Not shown).

The second transfer unit includes a vacuum pad for sucking the first or second plate 11a or 11b of the injection molded article 10, a rotary cylinder for rotating the vacuum pad, And a transfer cylinder for transferring the first or second plate bodies 11a and 11b of the injection product 10 to the packaging device along the transfer rail.

Here, the vacuum pad may further include an antistatic antistatic mat (not shown) below the vacuum pad to increase the attraction force. The vacuum pad may include a pair of cleaning rollers (not shown) disposed at one side of the packaging device in order to remove foreign matter adhered to the vacuum pad or foreign substances adhered to the lower portion of the plate after the plate is adsorbed, So that the foreign matter is removed.

The second conveying unit sucks the first or second plates 11a and 11b of the cut material 10 cut by the cutting unit 400 with a vacuum pad and transfers the first and second plates 11a and 11b to the packaging unit. At this time, the first or second plate bodies 11a and 11b of the injection product 10 adsorbed on the vacuum pad are rotated and up-down by the rotating cylinder and the up-down cylinder, And is conveyed by the conveying cylinder to the packaging unit along the conveying rail.

Finally, the packaging device part may be configured to pack the first or second plate bodies 11a, 11b of the injection product 10 using upper and lower packing rollers (not shown). In order to remove foreign matter adhered to the vacuum pad of the second conveyance unit and foreign matter adhered to the lower portion of the first or second plate bodies 11a and 11b of the injection molded article 10, A cleaning roller (not shown) The pair of cleaning rollers may be installed in the upward and downward directions, and an air section (not shown) may be formed at the user's request instead of the cleaning roller.

The packaging unit is configured to allow the upper packaging film and the lower packaging film to pass between the upper and lower packaging rollers and allow the first or second plate bodies 11a and 11b of the injection product 10 to pass between the upper packaging film and the lower packaging film The first or second plate bodies 11a and 11b of the injection molded article 10 are closely packed on the upper packaging film and the lower packaging film.

In the meantime, the automatic cutter 100 of the present invention includes an injection mold (or a light guide plate) 10 (see FIG. 14) manufactured by an injection mold process in the first transfer unit 200, A conveyor system (not shown) for supplying continuously can be additionally constructed. Therefore, when the conveyor system is additionally provided in the automatic cutter apparatus 100 of the present invention, it is possible to automate all the processes from the supply of the injection product 10 to the cutting and the product packaging.

Embodiment of Cutting Method of Injection Mold

Next, a method of cutting an injection material according to an embodiment of the present invention will be described with reference to FIG.

(1) The first transfer unit 200 is picked by the vacuum pad 270 to the cut position 120 and the cutting pedestal 460 And is then caused to be Placing. At this time, the first plate 11a of the injection product 10 is put on the cutting pedestal 460, and the second plate 11b of the injection product 10 is put on the cutting position base 120.

(2) When the molded article 10 is placed on the cutting position base 120 and the cutting pedestal 460, the position of the molded article 10 is aligned with the gaging device unit 300. At this time, the gaging device 300 advances the first and second reference cylinders 330 and 350 to two reference planes at a cutting position where the injection product 10 is to be positioned, The push cylinders 310 and 370 move forward in the direction of the first and second reference cylinders 330 and 350 and push the injection body 10 to set the injection body 10 at the cutting position. Dots and characters of the injection object 10 are acquired as an image image through comparison with the reference data through the vision camera, thereby checking the seating direction of the injection object 10.

(3) When the setting and inspection of the injection object 10 is completed, the first plate body 11a of the injection molded article 10 aligned on the cutting pedestal 460 and the gate 12 of the injection molded body 10, The first cutting edge 451 is used to cut the first cutting edge (see FIG. 14A).

(4) After the first plate 11a is aligned, the first cut end of the first plate 11a is cut by a second cutting edge 451 in accordance with the size of the product (See Fig. 14 (b)).

Here, cracks are generated when the first sheet member 11a and the gate 12 of the molded product 10 are cut and cut at a time, thereby causing a problem. This is because a difference in thickness and strength between the first plate 11a and the gate 12 is different from the opposite end, so that cracks are generated in one cutting operation. Accordingly, in the present invention, a problem that a crack is generated by cutting twice between the first plate 11a and the gate 12 of the injection molded article 10 is solved.

(5), after aligning the first plate 11a, the other end of the first plate 11a, which is opposite to the second end cut by the first plate 11a, is cut to the size of the product using the first cutting edge 421 So that the cutting is performed in a third order so as to meet the requirement (c in FIG. 14).

(6) The first plate body 11a is transferred to the packaging unit through the second conveying unit and packaged.

(7) The injection molded article 10 cut by the first plate body 11a is taken out from the cutting position through the first conveying unit 200 and rotated, and then the second plate body 11b is transferred to the cutting position.

(8) The direction of the second plate body 11b transferred to the cutting position is inspected and then aligned. At this time, dots and characters of the injection object 10 are obtained as an image image through the vision camera and compared with the reference data to check the seating direction of the injection object 10.

(9) When the setting and inspection of the molded article 10 is completed, the second plate body 11b of the molded article 10 aligned on the cutting pedestal 460 in the cutting apparatus unit 400 and the gate 12, The first cutting edge 451 is used to cut the first cutting edge (see Fig. 14 (d)).

After the second plate 11b is aligned with the second plate 11b, one end of the first plate 11b is cut by a second cutting edge 451, (See e in Fig. 14).

After the second plate 11b is aligned with the second plate 11b, the other end of the second plate 11b, which is opposite to the first end of the second plate 11b, is cut to the size of the product using the first cutting edge 421 (See Fig. 14 (f)).

(12) The second plate body 11b is transferred to the packaging unit through the second conveying unit and packaged.

(13) The above process is repeated.

The method and apparatus for cutting an extruded material according to the present invention having the above-described structure cuts an unnecessary portion from the outside when cutting between a light guide plate and a gate of an injection molded product, cuts the end portion of the light guide plate, The present invention can solve the technical problem of the present invention.

It will be apparent to those skilled in the art that various modifications and changes can be made in the present invention without departing from the spirit or scope of the present invention as defined by the appended claims. It will be appreciated that such modifications and variations are intended to fall within the scope of the following claims.

10: Injection 11: Square plate
12: gate 13: runner
100: Injection material cutting device 101: Base
102: frame 103: frame
110: Cutting vs. Waiting 111: Alignment
120: Cutting position vs. 200: First transfer unit
201: a conveying rail 202: a conveying bracket
203: Up-down bracket 210: Feed cylinder
220: Up-down cylinder 230: Pneumatic cylinder
240: rotating cylinder 250: gripper
260: connecting rod 270: vacuum pad
300: gauging unit 310: first push cylinder
311: Axis 320: Stage
321: cam follower
322: micrometer 330: first reference cylinder
331: Axis 340: Stage
341: cam follower
342: micrometer 350: second reference cylinder
360: stage 361: cam follower
370: a second push cylinder 380: a stage,
400: cutting device unit 410: first server motor
411: Reducer 412; Coupling
413: rotating shaft 414: first ball screw
420: first cutting device part 421: first cutting blade
422: LM guide 430: LM rail
440: second server motor 441: speed reducer
442; Coupling 443:
444: second ball screw 450: second cutting device part
451: second cutting edge 452: LM guide
453: Micrometer 460: Cutting base

Claims (4)

(a) rectangular first and second plates 11a and 11b are connected by a gate 12 and an injection molding 10 in which a runner 13 is disposed in the center of the gate 12 is molded step;
(b) transferring the first plate 11a of the injection product 10 to the cutting position through the first conveying unit 200;
(c) inspecting the direction of the first plate 11a transferred to the cutting position by dot and character recognition of the injection product 10 through a vision camera, and aligning;
(d) first cutting between the first plate 11a and the gate 12 using a first cutting edge;
(e) secondarily cutting one end of the first plate 11a, which is first cut after aligning the first plate 11a, using a first cutting edge to fit the size of the product;
(f) Cutting the other end of the first plate body 11a, which is opposite to one end of the second cut, after the first plate body 11a is aligned, by using the second cutting blade, step;
(g) transferring the first plate body 11a to the packaging unit through the second conveying unit;
(h) withdrawing the injection molded article 10 cut from the first plate body 11a from the cutting position through the first conveying unit 200 and rotating the same, and then transferring the second plate body 11b to the cutting position;
(i) inspecting the direction of the second plate 11b transferred to the cutting position by dot and character recognition of the injection product 10 through a vision camera, and aligning;
(j) firstly cutting between the second plate body 11b and the gate 12 using a first cutting edge;
(k) cutting the first end of the second plate body (11b), which is first cut after aligning the second plate body (11b), to a size corresponding to the size of the product using the first cutting edge;
(1) The other end of the second plate body 11b, which is the other side of the second cut end, is cut by a second cutting blade in accordance with the size of the product after the second plate body 11b is aligned step;
(m) transferring the second plate body (11b) to a packaging device part through a second conveying device part; And
(n) repeating the steps (b) and (m).
Cutting method of injection molding.
The method according to claim 1,
The cuts of the first and second plates 11a and 11b are cut at the cutting device part 400,
The cutting device part (400)
A first server motor 410 for forward rotation and reverse rotation; A speed reducer 411 for reducing the speed of the first server motor 410; A coupling 412 connected to the speed reducer 411; A first ball screw 414 connected to the rotation shaft 413 of the coupling 412 and rotated; An LM guide 422 moving up and down along the LM rail 430 by rotation of the first ball screw 414; A first cutting device 420 that moves according to the movement of the LM guide 422 and has a first cutting edge 421 disposed at a lower end thereof; And
A second server motor 440 for forward rotation and reverse rotation; A speed reducer 441 for reducing the speed of the second server motor 440; A coupling 442 connected to the speed reducer 441; A second ball screw 444 coupled to the rotation shaft 443 of the coupling 442 and rotated; An LM guide 452 moving up and down along the LM rail 430 by rotation of the second ball screw 444; And a second cutting device part (450) moving according to the movement of the LM guide (452) and having a second cutting blade (451) disposed at the lower end thereof.
Cutting method of injection molding.
An injection molding 10 in which rectangular first and second plate bodies 11a and 11b are connected by a gate 12 on both sides and a runner 13 is disposed at the center of the gate 12;
The injection body 10 is transferred to align the first plate body 11a at the cutting position and the injection body 10 cut from the first plate body 11a is taken out from the cutting position and rotated, A first conveying unit 200 arranged at a cutting position;
A gaging device 300 for aligning the position of the injection molding 10 to cut the injection molding 10 into a cutting position through the first transfer device 200 according to a standard;
Cutting the first and second plates 11a and 11b of the gauged molded article 10 at the cutting position in order to cut the gap between the first and second plates 11a and 11b and the gate, A cutting device 400 for cutting an end portion of the plate body after cutting the unnecessary portion from the outside;
And a second conveying unit for conveying the first and second plates (11a, 11b) cut by the cutting unit (400) by a vacuum pad to the packaging unit,
The cutting device part (400)
A first server motor 410 for forward rotation and reverse rotation; A speed reducer 411 for reducing the speed of the first server motor 410; A coupling 412 connected to the speed reducer 411; A first ball screw 414 connected to the rotation shaft 413 of the coupling 412 and rotated; An LM guide 422 moving up and down along the LM rail 430 by rotation of the first ball screw 414; A first cutting device 420 that moves according to the movement of the LM guide 422 and has a first cutting edge 421 disposed at a lower end thereof; And
A second server motor 440 for forward rotation and reverse rotation; A speed reducer 441 for reducing the speed of the second server motor 440; A coupling 442 connected to the speed reducer 441; A second ball screw 444 coupled to the rotation shaft 443 of the coupling 442 and rotated; An LM guide 452 moving up and down along the LM rail 430 by rotation of the second ball screw 444; And a second cutting device part (450) moving according to the movement of the LM guide (452) and having a second cutting blade (451) disposed at the lower end thereof.
Cutting device for injection molding.
The method of claim 3,
The first conveying unit 200 includes a first conveying unit 200,
A conveyance bracket 202 movably installed on the conveyance rail 201; A transfer cylinder 210 for moving the transfer bracket 202 along the transfer rail 201; An up-down cylinder 220 installed on the transport bracket 202; An up-down bracket 203 which is moved up and down by the up-down cylinder 220; A pneumatic cylinder 230 installed on the up-down bracket 203; A rotating cylinder 240 installed on the up-down bracket 203; A gripper 250 connected to the shaft of the rotating cylinder 240; A linkage 260 connected to the lower end of the gripper 250; And a vacuum pad 270 installed in the connection block 260 and vacuum-holding the injection molded article 10 by the pneumatic cylinder 230,
The gaging device unit (300)
First and second reference cylinders (330, 350) for advancing the stages (340, 360) to the first and second side surfaces of the molded article (10) placed on the mounting table (120) to hold the reference position of the molded article (10); First and second push cylinders (310, 370) for advancing the stages (320, 380) so as to contact the third and fourth sides of the molded article (10) to fix the molded article (10) to a cutting position; And a micrometer (322, 342) for precisely adjusting a moving distance of the stage (340) of the first reference cylinder (330) and the stage (320) of the first push cylinder (310)
Automatic cutting device for injection molding.

Images