KR101531676B1 - Apparatus and method for cutting shade film - Google Patents

Abstract

The present invention relates to an apparatus for cutting a film, which can cut a film fabric continuously supplied, and comprises: a laser cutting unit irradiating a laser to a film fabric to cut the film fabric to a plurality of films having a predetermined length; and a marking unit capable of marking production data to each film, thereby accurately tracing a production record by using the production data marked in each film.

Description

Technical Field [0001] The present invention relates to a film cutting apparatus,

The present invention relates to a film cutting apparatus and method.

A cathode ray tube (CRT), which is one of the display devices conventionally used, has been mainly used for monitors such as a TV, a measurement device, and an information terminal device. However, due to the large weight and size of the CRT itself, Could not respond positively to the demand of

In order to replace such a CRT, a liquid crystal display device having advantages of small size and light weight has been actively developed, and in recent years, a demand for a flat panel display device has been developed to such a degree that it can sufficiently perform its function.

The principle of image realization of such a liquid crystal display device utilizes optical anisotropy and polarization property of a liquid crystal. The liquid crystal has an anisotropy having a long molecular structure and a directionality in arrangement, and a polarization in which the direction of the molecular arrangement is changed according to the size It has properties. Accordingly, the liquid crystal display device has a liquid crystal panel composed of a pair of transparent insulating substrates, each of which has electric field generating electrodes formed on the surfaces thereof facing each other with a liquid crystal layer sandwiched therebetween as an essential component, The arrangement direction of the molecules is artificially adjusted, and various images are displayed by using the transmittance of light which is changed at this time.

At this time, a polarizing film for visualizing the liquid crystal alignment change of the liquid crystal display device is positioned on the upper and lower sides of the liquid crystal panel. The polarizing film transmits light of the polarized light component coinciding with the transmissive side, The degree of light transmission is determined by the arrangement of the transmission axis and the arrangement characteristics of the liquid crystal.

The polarizing film comprises a polarizing layer formed by stretching a polyvinyl alcohol (PVA) having a polarizing axis for changing polarization characteristics of light and absorbing iodine as a polarizer with a strong tension, and a polarizing layer formed on both sides of the polarizing layer, A protective film formed on one side of the first TAC film to prevent surface damage of the polarizing plate; and a pressure-sensitive adhesive layer on one side of the second TAC film, As shown in FIG.

This polarizing film is prepared by preparing a PVA film, a TAC film (a first TAC film and a second TAC film), a protective film and a release film, respectively, and then performing a pre-treatment in which the material roll is cleaned in a cleaning bath and dried in a drying oven After the first TAC film and the second TAC film are laminated on both sides of the PVA film and the PVA film is stretched to form an intermediate roll, a protective film is laminated on the surface of the first TAC film, A release film is laminated on the surface of the second TAC film by a pressure sensitive adhesive to form a polarizing film roll, and then the polarizing film is cut into a plurality of polarizing films having a predetermined size by using a wood cutting device or a laser cutting device ), And completed the inspection and packaging process.

On the other hand, when defects such as pressing, scratching, and staining occur in the polarizing film during the production process of the polarizing film, the defective mark is printed on the defective area of the polarizing film by using an inkjet printer. During the cutting process of the polarizing film, a defective mark is detected through a defective mark detector including a line camera to separate and discharge the defective film including the defective area from the normal film.

As the defective film is separated and discharged in this way, the number of polarized films cut and the number of normal films that can be attached to the panel can not but be changed. Therefore, in order to supply an accurate quantity of normal film, production data such as the total quantity of cut polarized films, the total quantity of normal films, and the total quantity of defective films must be secured.

Conventionally, in order to secure the production data of such a polarizing film, the total weight of the normal film is secured by measuring the height or height of the normal films stored in a laminated state after the cutting. However, since the elongation percentage of the polarizing film may be different in the course of manufacturing the film, there is a problem that an error may occur between the total number of normal films measured from the weight and the height and the total quantity of actual normal films.

It is an object of the present invention to provide a film cutting apparatus and method improved in structure so as to ensure the quantity of cut films and other production data accurately.

A film cutting apparatus according to a preferred embodiment of the present invention for solving the above problems is a film cutting apparatus capable of cutting a continuous film feed, And a marking unit capable of marking the production data on the plurality of films, respectively.

Preferably, the marking unit is an ink-jet printing unit capable of marking production data by ejecting ink onto a plurality of films, respectively.

Preferably, the marking unit is a laser marking unit capable of marking production data by irradiating a plurality of films with a laser, respectively.

Preferably, the laser cutting unit is capable of functioning as a laser marking unit by marking production data while cutting the film fabric.

Preferably, the apparatus further comprises a defective mark detection unit capable of detecting a defective mark previously marked on the defective area of the film material, wherein when the defective mark is detected, the defective area of the film material is passed, Characterized in that the laser is selectively irradiated only to the normal region of the fabric so that the film is divided into a normal film composed of a normal region and a dummy film composed of a defective region and cut and the marking unit selectively marks production data only on the normal film do.

Preferably, the apparatus further comprises a film sorting unit capable of separating and discharging the dummy film from the normal film, wherein the film sorting unit includes: an outlet through which the dummy film can be selectively introduced; And a dummy film reservoir in which the dummy film introduced into the discharge port is stored.

Preferably, the production data includes at least one of a unique number assigned individually for each of the plurality of films, an accumulated total quantity of the plurality of films, and an identification indicative of whether each of the plurality of films is a normal film or a dummy film And one of them.

A film cutting apparatus according to a preferred embodiment of the present invention for solving the above-mentioned problems is a film cutting apparatus capable of cutting a continuous film feed, comprising a plurality of cutters capable of cutting a film And a marking unit capable of marking the production data on the plurality of films, respectively. The marking unit includes: a marking unit for marking production data on a plurality of films;

Preferably, the marking unit is an ink-jet printing unit capable of marking production data by ejecting ink onto a plurality of films, respectively.

Preferably, the laser marking unit is a laser marking unit capable of marking production data by irradiating a plurality of films with a laser, respectively.

Preferably, the apparatus further comprises a defective mark detection unit for detecting a defective mark previously marked on the defective area of the film material from the plurality of films, the production data comprising: a unique number individually assigned to each of the plurality of films; The cumulative total quantity of films of the plurality of films, the cumulative total quantity of normal films consisting of the steady regions of the film fabrics in the plurality of films, the cumulative total quantity of defective films comprising the defective regions of the films in the plurality of films, And a discrimination indicative of whether the film of the film is a normal film or a defective film.

Preferably, the film sorting unit further comprises a film sorting unit capable of separating and discharging the defective film from the normal film, wherein the film sorting unit includes an outlet through which the defective film can be selectively injected, air is injected so that the defective film is inclined, At least one air nozzle for discharging the defective film, and a defective film reservoir for storing the defective film introduced into the discharge port.

According to another aspect of the present invention, there is provided a film cutting method, comprising the steps of: (a1) continuously supplying a raw material to a film; (a2) Cutting the film into a plurality of films, (a3) marking production data on each of the plurality of films, and (a4) recovering the plurality of films.

Preferably, (a5) further comprises the step of detecting a defective mark previously marked in the defective area of the original of the film, which is performed between the step (a1) and the step (a2), wherein (a2) , The laser beam is selectively irradiated only to the normal region of the film fabric through the defective region of the film fabric and is cut while dividing the film fabric into a normal film having a normal region and a dummy film having a defective region, (a3) is performed while selectively marking the production data only on the normal film.

Preferably, (a6) a step (a3) is performed between (a3) and (a4), air is blown into the dummy film to introduce the dummy film into the outlet through which the dummy film can be selectively introduced, (A4) is carried out while recovering the normal film.

Preferably, the step (a3) is performed while ejecting ink to a plurality of films and marking the production data.

Preferably, the step (a3) is performed while irradiating a plurality of films with a laser to mark production data.

Preferably, step (a2) and step (a3) are performed simultaneously by irradiating a laser beam to the end of the film.

Preferably, the production data includes at least any one of an inherent number individually assigned to each of the plurality of films, and an accumulated total quantity of the plurality of films.

According to another preferred embodiment of the present invention, there is provided a film cutting method comprising the steps of: (b1) continuously feeding a film material; (b2) Cutting the film into a plurality of films having a predetermined length and width, (b3) marking production data on each of the plurality of films, and (b4) recovering the plurality of films.

Preferably, the step (b2) is performed while ejecting ink to a plurality of films and marking the production data.

Preferably, step (b2) is performed while irradiating a plurality of films with a laser to mark production data.

Preferably, (b5) further comprises the step of detecting a defective mark, which is pre-marked in the defective area of the film material from the plurality of films, between the step (b2) and the step (b3) The total number of the plurality of films, the cumulative total quantity of the normal film consisting of the normal regions of the film fabrics in the plurality of films, the defective region of the film in the plurality of films, A cumulative total quantity of the obtained defective films, and a defective discrimination indicative of whether each of the plurality of films is a normal film or a defective film.

Preferably, (b6) a step (b3) is performed between the step (b3) and the step (b4), in which air is blown into the defective film to introduce the defective film into the outlet through which the defective film can be selectively introduced, (B4) is carried out while recovering the normal film.

The film cutting apparatus and method according to the present invention have the following effects.

First, the production data can be marked for each film, and the production history can be accurately tracked using the marked production data.

Second, the production quantity, good quantity, and defective quantity can be accurately calculated using the production data, so that the exact quantity of the product can be delivered to the customer.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view for explaining a film cutting apparatus according to a first embodiment of the present invention; FIG.
Fig. 2 is a perspective view of a defective mark detection unit included in the film cutting apparatus of Fig. 1; Fig.
Fig. 3 is a perspective view of a laser cutting unit provided in the film cutting apparatus of Fig. 1; Fig.
4 is a plan view of a polarizing film for explaining an aspect of marking production data on a polarizing film by using a laser marking unit included in the film cutting apparatus of FIG.
Fig. 5A is a partially enlarged view of the region A of the polarizing film of Fig. 4; Fig.
Fig. 5B is a partially enlarged view of the polarizing film of Fig. 4 with respect to region B. Fig.
Fig. 6 is a side view of a film sorting unit included in the film cutting apparatus of Fig. 1; Fig.
7 is a view for explaining a film cutting apparatus according to a second embodiment of the present invention.
Fig. 8 is a plan view of a polarizing film for explaining an aspect of marking production data on a polarizing film by using a laser marking unit provided in the film cutting apparatus of Fig. 7; Fig.
FIG. 9A is a partially enlarged view of the polarizing film of FIG. 8 with respect to the C region. FIG.
FIG. 9B is a partially enlarged view of the D region of the polarizing film of FIG. 8; FIG.
10 is a flowchart for explaining a film cutting method according to the first embodiment of the present invention.
11 is a flowchart for explaining a film cutting method according to a second embodiment of the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may appropriately define the concept of the term in order to best describe its invention It should be construed as meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

In the drawings, the size of each element or a specific part constituting the element is exaggerated, omitted or schematically shown for convenience and clarity of description. Therefore, the size of each component does not entirely reflect the actual size. In the following description, it is to be understood that the detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

The film cutting apparatus and method according to the present invention are characterized in that the film material supplied continuously is cut and the production data of the film is marked for each cut film. The kind of the film is not particularly limited, and for example, production data can be marked on various kinds of films such as a polarizing film and a 3D film using the present invention. Hereinafter, for convenience of explanation, the present invention will be described by taking the case of marking production data on a polarizing film as an example, and the present invention can be applied to other types of films.

2 is a perspective view of a defective mark detecting unit included in the film cutting apparatus of FIG. 1, and FIG. 3 is a cross-sectional view of the film cutting apparatus of FIG. 1, And is a perspective view of a laser cutting unit provided in the film cutting apparatus.

4 is a plan view of a polarizing film for explaining an aspect of marking production data on a polarizing film using a laser marking unit provided in the film cutting apparatus of Fig. 1. Fig. 5A is a plan view of polarizing film A FIG. 5B is a partially enlarged view of the polarizing film of FIG. 4 with respect to region B, and FIG. 6 is a side view of the film sorting unit of the film cutting apparatus of FIG.

1 to 6, a film cutting apparatus 1 according to a first embodiment of the present invention is a film cutting apparatus 1 capable of cutting a continuous film feed, A marking unit 10, a defective mark detection unit 20, a laser cutting unit 30, a marking unit, and a film sorting unit 50, and the like.

The control unit can control the overall operation of the film cutting apparatus 1 according to the present invention.

1, the transfer unit 10 continuously supplies the polarizing film F to perform the cutting process, and includes a take-up roller 11, a dancing roller 13, a loading unit 15, A guide roller 17, a transfer frame 19, and the like.

The winding roller 11 unwinds and feeds the polarizing film F to the rollers, and the dancing roller 13 can spread the polarizing film F into a flat state. The loading unit 15 may be loaded with a predetermined length to match the size of the panel to which the polarizing film fabric F is to be attached. The guide roller 17 can guide the polarizing film F to the conveying frame 19 while tensing it.

The transfer frame 19 is provided on one side of the guide roller 17 and receives the polarizing film F from the guide roller 17. The defective mark detecting unit 20, the laser cutting unit 30, and the marking unit Can be provided. The polarizing film original F is conveyed in advance by the defective mark detecting unit 20, the laser cutting unit 30, the marking unit, and the like provided on the conveying frame 19 while being conveyed along the longitudinal direction of the upper surface of the conveying frame 19. [ And can be processed into a set shape.

The defective mark detection unit 20 can detect the defective mark 60 previously marked in the defective area of the polarizing film original F. [

1, the defective mark detection unit 20 is provided at the front end of the transfer frame 19 and is provided with a defective area of the polarizing film F, which is guided and conveyed from the guide roller 17, It is possible to detect the defective mark 60 that has been previously marked. For this purpose, the defective mark detection unit 20 may include a first camera 21a, a second camera 21b, and a camera transfer unit.

The first camera 21a and the second camera 21b can photograph a predetermined shooting region, respectively.

As shown in FIG. 2, two cameras 21 such as a first camera 21a and a second camera 21b may be movably installed in the camera transfer section. However, the present invention is not limited thereto, and at least one camera 21 may be movably installed in the camera transfer unit. For convenience of description, the present invention will be described by taking as an example the case where two cameras 21 are installed in a camera transfer section.

The first camera 21a and the second camera 21b can reciprocate within a predetermined section individually along the width direction of the polarizing film F by the camera transferring unit. That is, the first camera 21a and the second camera 21b have different fields of view, respectively, thereby photographing different imaging regions to generate photographed images of the polarizing film fabric F. The photographed image of the polarizing film F produced by the first camera 21a and the second camera 21b may be transmitted to the controller to provide information for specifying a defective area of the polarizing film fabric F .

The camera transfer unit can reciprocally transport the first camera 21a and the second camera 21b individually in the width direction with the polarizing film fabric F and the detection unit frame 22, the guide rail 23, the slider 24, a slider feeding means, a position detecting means, and the like.

The detection unit frame 22 is provided on the transfer frame 19 and can form the body of the camera transfer part.

2, the detection unit frame 22 is installed in a direction transverse to the polarizing film F on the conveying frame 19, and has a gate shape (not shown) so that the polarizing film fabric F can pass downward. .

The guide rail 23 is provided on the detection unit frame 22 along the width direction of the polarizing film F and can guide the movement of the first camera 21a and the second camera 21b. The slider 24 is movably installed on the guide rail 23 and can be coupled to the first camera 21a and the second camera 21b.

As shown in FIG. 2, the pair of guide rails 23 may be installed on the detection unit frame 22 up and down along the width direction of the polarizing film F. The pair of sliders 24 are coupled to the first camera 21a and the second camera 21b, respectively, and can be movably installed on the guide rail 23. Each slider 24 can move the first camera 21a and the second camera 21b respectively while reciprocally moving along the guide rail 23 along the width direction of the far end of the polarizing film within a predetermined section . Between the slider 24 and the guide rail 23, a roller (not shown) for reducing frictional force may be provided.

The slider moving means provides the slider 24 with a driving force capable of moving along the guide rail 23, and can include the stator 25, the mover 26, and the like.

The stator 25 is fixed to the detection unit frame 22 along the width direction of the polarizing film F and can provide a magnetic force.

As shown in Fig. 2, the stator 25 has a plurality of magnets continuously arranged at predetermined intervals, thereby providing a magnetic force. Here, the magnet may be composed of a permanent magnet or an electromagnet.

The mover 26 is coupled to the slider 24 and can provide a magnetic force.

As shown in Fig. 2, the mover 26 is provided with a pair and can be coupled to the pair of sliders 24, respectively, and provides a magnetic force of different polarity to the stator 25. Therefore, a repulsive force is generated between the stator 25 and the mover 26. When the stator 25 is constituted by an electromagnet, on the contrary, when the stator 25 is constituted by an electromagnet, the slider 26 is constituted by a permanent magnet and has a polarity different from that of the stator 25 To provide a magnetic force.

Therefore, the slider moving means can be constituted by a linear motor system that moves each slider 24 using the repulsive force generated by the mover 26 and the stator 25 providing different polarities. That is, since the slider moving means moves each slider 24 by using the electromagnetic force, the slider 24 and the first camera 21a and the second camera 21b combined with the respective sliders 24 The precision for repetitive linear motion can be improved.

The position detecting means can detect the photographing position of the first camera 21a and the second camera 21b by confirming the moving position of the slider 24 and detect the position of the linear scale 27 and the scale head 28 .

The linear scale 27 is provided on the detection unit frame 22 along the width direction of the polarizing film fabric F and can indicate the moving position of the slider 24. [

As shown in FIG. 2, the linear scale 27 may be made of a glass material or a metal material, and a scale may be provided at predetermined intervals. For example, the graduations may be provided at intervals of 10 mu m or 20 mu m so that the moving position of the slider 24 can be accurately displayed.

The scale head 28 is installed on the slider 24 and moves along with the slider 24 to detect the scale of the linear scale 27 and detect the photographing position of the first camera 21a and the second camera 21b do.

As shown in FIG. 2, the pair of scale heads 28 are provided with respective sliders 24 and are provided with a graduation with pulses of 50 to 2500 pulses or more per mm as they pass the scale of the linear scale 27 It can be read and transmitted to the control unit. Accordingly, the control unit confirms the movement positions of the respective sliders 24 through the scale head 28 and the linear scale 27, so that the first camera 21a and the second camera 21a combined with the respective sliders 24 21b can be precisely detected. As a result, the controller detects the defective mark 60 from the photographed image of the polarizing film fabric F delivered from the first camera 21a and the second camera 21b, and detects the defective mark 60 as a whole of the defective polarizing film fabric F It is possible to accurately identify the defective area where the defective area has occurred.

The laser cutting unit 30 can cut the polarizing film fabric F into a plurality of films having a predetermined length by irradiating a laser beam onto the film fabric.

1, the laser cutting unit 30 is provided on the conveying frame 19 so as to be positioned downstream of the defective mark detecting unit 20, and a polarizing film fabric (for example, F can be cut to a predetermined length. That is, the laser cutting unit 30 can be cut into a plurality of polarizing films having a length corresponding to the panel to which the polarizing film fabric F is to be attached by irradiating the polarizing film fabric F with a laser. For this purpose, the laser cutting unit 30 may include a laser generator 31, a scan head 32, and a scan head transfer unit.

The laser generator 31 is installed in the cutting unit frame 33 of the scan head transfer section and is capable of generating a laser beam RV for irradiating the polarizing film F.

3, the laser generator 31 is provided on the upper surface of the cutting unit frame 33 of the scan head transfer unit, and the laser generated and emitted from the laser generator 31 is provided on one side of the laser generator 31 And can be reflected by the reflector 31a provided and supplied to the scan head 32.

The scan head 32 is installed on the cutting unit frame 33 of the scan head feed part and irradiates the laser beam supplied from the laser generator 31 onto the polarizing film F to irradiate the polarizing film F with a predetermined length It can be cut into a plurality of polarizing films.

3, the scan head 32 may be installed on the cutting unit frame 33 such that it can reciprocate along the width direction of the polarizing film fabric F. As shown in FIG. Accordingly, the scan head 32 receives a laser beam from the laser generator 31 and moves along the width direction of the polarizing film F, while changing the length of the polarizing film F to a predetermined length The branches can be cut into a plurality of polarizing films.

However, if the cutting operation is performed irrespective of the presence or absence of a defective region of the polarizing film fabric F, the entire polarizing film in which the defective region exists must be discarded regardless of the area of the defective region, so that the productivity may be deteriorated. Therefore, it is advantageous from the viewpoint of productivity of the film that the defective area of the polarizing film fabric F is selectively sorted and discarded, and the polarizing film fabric F is left as much as possible in the normal area.

In order to solve this problem, when the defective mark 60 is detected, the laser cutting unit 30 passes the defective region of the polarizing film F and selectively irradiates only the normal region of the polarizing film F The polarizing film F may be divided into a normal film Fa having a predetermined length and a dummy film Fb consisting of a defective region. As described above, the normal film Fa and the dummy film Fb cut by the laser cutting unit 30 can be separately recovered by the film sorting unit 50, which will be described later.

Meanwhile, in the film cutting apparatus 1 according to the preferred embodiment of the present invention, the laser cutting unit 30 includes the scan head 32, but the present invention is not limited thereto. For example, instead of the scan head 32, the laser cutting unit 30 may include a laser nozzle having a converging lens capable of converging the laser beam supplied from the reflector 31a and irradiating the laser beam onto the polarizing film fabric 30 . For convenience of explanation, the present invention will be described by taking the case where the laser cutting unit 30 includes the scan head 32, for example.

The scan head transfer unit is capable of reciprocating the scan head 32 in the width direction of the polarizing film fabric F and includes a cutting unit frame 33, a cross rail 34, a slider 35, Moving means and the like.

The cutting unit frame 33 can form the main body of the laser cutting unit 30. [

3, the cutting unit frame 33 is provided so as to cross the polarizing film end F in the width direction on the transfer frame 19, and the polarizing film F can be passed downward It can have a plate shape.

The cross rail 34 is provided on the cutting unit frame 33 along the width direction of the polarizing film raw fabric F and can guide the movement of the scan head 32. [ The slider 35 is movably installed on the cross rail 34 and can be engaged with the scan head 32.

3, the cross rail 34 is provided on the upper surface of the cutting unit frame 33 along the width direction of the polarizing film raw fabric F, and includes a slave 34a for moving the scan head 32, Are formed along the longitudinal direction. The slider 35 is movably installed inside the cross rail 34 and is coupled to the scan head 32 through the slit 34a.

The slider moving means provides the slider 35 with a driving force capable of moving along the cross rail 34, and can include a lead screw, a driving motor 37, and the like.

3, the lead screw 36 is installed in the longitudinal direction of the cross rail 34 and is engaged with the slider 35, and the drive motor 37 is installed at the end of the lead screw 36, The screw 36 can be rotated. The slider moving means moves the scan head 32 coupled with the slider 35 and the slider 35 while moving the lead screw along the width direction of the polarizing film fabric F when the drive motor 37 is driven . On the other hand, the slider moving means may be constituted by a linear motor system including a linear rail and a linear motor.

The marking unit can mark production data 70 on a plurality of polarizing films cut by the laser cutting unit 30, respectively.

As described above, the laser cutting unit 30 cuts the polarizing film raw fabric F into the normal film Fa and the dummy film Fb, and cuts the total of the polarizing film cut by the laser cutting unit 30 The yield and the production yield of the normal film (Fa) are different. In other words, the production quantity of the normal film Fa can not be accurately calculated from the length of the polarizing film fabric F fed by the transfer unit 10. [

Conventionally, in order to calculate the production yield of the normal film, the weight and height of the normal films laminated after the cutting were counted, and the production yield of the normal film was calculated therefrom. However, since the polarizing film fabric may have different elongation ratios for each part, the production yield of the normal film calculated from the weight and the height is inevitably incurred. Therefore, in order to supply the correct quantity of normal film to the customer, it is necessary to obtain more accurate production data that can accurately calculate the production quantity of the normal film.

In order to secure such production data 70, the film cutting apparatus 1 according to the present invention includes a marking unit (not shown) capable of marking production data 70 on a plurality of polarizing films cut by the laser cutting unit 30, .

The configuration of the marking unit is not particularly limited. For example, the marking unit may include an inkjet printing unit capable of marking the production data 70 by ejecting ink onto a plurality of films, And a laser marking unit 40 capable of marking the data 70. For convenience of explanation, the present invention will be described based on the case where the laser marking unit 40 is employed as the marking unit.

The laser marking unit 40 is the same as the laser cutting unit 30 in that the laser marking unit 40 performs a work using a laser, and thus can have the same configuration as the laser cutting unit 30. Therefore, the cutting operation of the polarizing film fabric F and the marking operation of the production data 70 can be performed together using the laser cutting unit 30 without separately providing the laser marking unit 40. [ That is, the laser cutting unit 30 can also function as the laser marking unit 40 by marking the production data 70 together with the cutting edge F of the polarizing film.

The method of marking the production data 70 by the laser marking unit 40 is not particularly limited. For example, as shown in FIG. 4, And the production data 70 can be marked on the respective sheets. Since the dummy film Fb is to be separated and discarded, the production data 70 can be selectively marked only on the normal film Fa actually used. However, the present invention is not limited to this, and the dummy film Fb may also be marked with the production data 70. [

The kind of the production data 70 markable by the laser marking unit 40 is not particularly limited. For example, as shown in FIGS. 5A and 5B, the production data 70 may include a unique number 72, a production date 74, a roll number 76, and a good quantity 78, have.

The unique number 72 is for discriminating the normal film Fa from the other normal films Fa and is individually given for each normal film Fa and includes the manufacturer code number 72a of the manufacturer, A film code number 72b indicating the kind, and a serial number 72c of the normal film Fa, and the like.

The production date 74 represents the date on which the cutting process was performed, and the roll number 76 represents the serial number of the fabric roll being cut. The good product quantity 78 is for calculating the production quantity of the normal film Fa and represents the cumulative quantity of the normal film Fa produced so far from the work roll in operation.

By marking the production data 70 on each of the normal films Fa as described above, it is possible to calculate the accurate production quantity of the normal film Fa by using the good product quantity 78, Date 74 can be used to accurately track the production history. Therefore, it is possible to deliver the contracted quantity of products to the customer in advance without any error, and if the defect is found after the product, the production history can be traced to identify the cause of the defect.

The film sorting unit 50 can separate and discharge the dummy film Fb from the normal film Fa.

1, the film sorting unit 50 is provided downstream of the laser marking unit 40 and is provided with a first conveying roller 51 (see FIG. 1) for selectively separating the dummy film Fb from the normal film Fa A stacker 52, an outlet 53, an air nozzle 54, a second conveying roller 55, and a reservoir 56. [0034]

The first conveying roller 51 receives and transports the normal film Fa from the conveying frame 19 and the stacking machine 52 is capable of stacking the normal film Fa conveyed by the first conveying roller 51 have. The dummy film Fb is selectively introduced into the discharge port 53 and the air nozzle 54 can inject air into the discharge port 53 so that the dummy film Fb is inclined. The second conveying roller 55 guides the movement of the dummy film Fb introduced into the discharge port 53 and the reservoir 56 can store the dummy film Fb flowing into the discharge port 53.

6, the first conveying roller 51 is provided at one side of the conveying frame 19 so as to be in parallel with the conveying frame 19, and the loader 52 is provided at the end of the first conveying roller 51 Respectively. The discharge port 53 is formed with a small gap between the transfer frame 19 and the first transfer roller 51. The air nozzle 54 is installed in the transfer frame 19 such that the air injection port faces the discharge port 53 And air can be selectively injected into the dummy film Fb. The second conveying roller 55 is inclined at a lower portion of the discharge port 53 and the reservoir 56 is installed at the lower end of the second conveying roller 55.

The normal film Fa is guided and stacked by the first conveying roller 51 to the stacker 52 and the dummy film Fb is tilted by the air ejected from the air nozzle 54, And then guided to the reservoir 56 by the second conveying roller 55 and stored. The normal film Fa is used by being attached to the panel on the stacker 52 and the dummy film Fb stored in the reservoir 56 is discarded.

FIG. 7 is a view for explaining a film cutting apparatus according to a second embodiment of the present invention, and FIG. 8 is a diagram showing an aspect of marking production data on a polarizing film by using a laser marking unit provided in the film cutting apparatus of FIG. FIG. 9A is a partially enlarged view of the polarizing film of FIG. 8 with respect to the C region, and FIG. 9B is a partially enlarged view of the polarizing film of FIG. 8 with respect to the D region.

7 to 9B, a film cutting apparatus 1 'according to a second embodiment of the present invention includes a control unit, a transfer unit 10, a wooden cutting unit 80, a defective mark detection unit 20, A marking unit 40, a film sorting unit 50, and the like.

The film cutting apparatus 1 'according to the second embodiment of the present invention is different from the film cutting apparatus 1 according to the first embodiment of the present invention in that the cutter unit 80 And the defective mark detection unit 20 is installed downstream of the wooden cutting unit 80. The remaining configurations are the same as each other. Therefore, the film cutting apparatus 1 'according to the second embodiment of the present invention will be described, focusing on the differences.

The transfer unit 10 can continuously supply the polarizing film F with the wooden cutting unit 80 and has the same configuration as the transfer unit 10 of the film cutting apparatus 1 according to the first embodiment of the present invention . Therefore, a detailed description of the configuration of the transfer unit 10 will be omitted.

The wooden cutting unit 80 has a plurality of cutters 84 capable of cutting the polarizing film F and can cut the polarizing film F into a plurality of films having predetermined widths and lengths .

7, the wooden cutting unit 80 is provided at the front end of the feed frame 19 and feeds the polarizing film fabric F fed to the feed frame 19 by the guide rollers 17 to a cutter (not shown) 84). ≪ / RTI > That is, the cutting unit 80 cuts the polarizing film F by a cutter 84 having a sharp cut surface, thereby forming a plurality of polarizing films F having a length and width corresponding to the panel to which the polarizing film F is attached It can be cut into film. To this end, the wooden cutting unit 80 may include a press member 82, a cutter 84, and the like.

The press member 82 forms a support frame of the wooden cutting unit 80 and can reciprocate so as to be close to or spaced from the fabric F of the polarizing film. The cutter 84 is mounted on one side of the press member 82 and can cut the polarizing film fabric F while reciprocating with the press member 82.

7, the press member 82 is provided on the upper side of the transfer frame 19 and moves reciprocally up and down so as to be close to the polarizing film F or away from the polarizing film F . The cutter 84 is mounted on the bottom surface of the press member 82. The cutter 84 may be disposed in the longitudinal direction of the polarizing film F and in the width direction of the polarizing film F. Therefore, when the wooden cutting unit 80 is driven, the cutter 84 is reciprocated in the vertical direction by the press body, and the polarizing film F can be cut into a plurality of polarizing films having a predetermined length and width .

In the case of the film cutting apparatus 1 according to the first embodiment of the present invention, since the laser cutting method is employed, the polarizing film fabric F slitted at a predetermined width in the film manufacturing process is cut into a predetermined length Can be performed. In contrast, in the case of the film cutting apparatus 1 'according to the second embodiment of the present invention, the polarizing film F having no slitting in the film manufacturing process has a predetermined length Cut to width.

The defective mark detection unit 20 can detect the defective marks 60 previously marked on the polarizing film F from a plurality of polarizing films cut by the wooden cutting unit 80. [

7, the defective mark detection unit 20 is provided on the transfer frame 19 so as to be located downstream of the wooden cutting unit 80, and can detect the defective mark 60 marked on the polarizing film have. For this purpose, the defective mark detection unit 20 includes at least one camera 21 and a camera 21 as a camera feed unit, and detects a defective mark in the film cutting apparatus 1 according to the first embodiment of the present invention Unit 20 shown in Fig. Therefore, detailed description of the configuration of the defective mark detection unit 20 will be omitted.

In the case of the above-described film cutting apparatus 1 according to the first embodiment of the present invention, since only one polarizing film can be cut sequentially from the polarizing film F by using the laser cutting unit 30, The defective mark detecting unit 20 is installed upstream of the laser cutting unit 30 so that only the defective area of the film stock F can be selectively discarded.

In contrast, in the case of the film cutting apparatus 1 'according to the second embodiment of the present invention, a plurality of cutters 84 are used to simultaneously cut the polarizing film F of a predetermined section into a plurality of polarizing films, Only the defective area of the polarizing film fabric F can not be selectively discarded, and the defective mark detecting unit 20 is disposed downstream of the wood cutting unit 80. [ However, the present invention is not limited to this, and in the case of the film cutting apparatus 1 'according to the second embodiment of the present invention, the defective mark detecting unit 20 can also be provided upstream of the wooden cutting unit 80.

With the provision of the defective mark detection unit 20 as described above, the camera 21 of the defective mark detection unit 20 can take a picture of each polarizing film, generate a shot image for each polarizing film, and deliver it to the control unit . The control unit detects the defective mark 60 from the photographed image of each polarizing film and detects the normal film Fa and the polarizing film fabric F which are only the normal regions of the polarizing film fabric F among the plurality of polarizing films cut out, And the defective film Fc including the defective area of the defective film Fc.

The laser marking unit 40 can mark the production data 70 on the plurality of films cut by the wooden cutting unit 80, respectively.

7, the laser marking unit 40 is installed in the transfer frame 19 so as to be located downstream of the defective mark detection unit 20, and is capable of marking the production data 70 on each polarizing film have. The laser marking unit 40 of the film cutting apparatus 1 according to the first embodiment of the present invention is provided with at least one scan head 32 and a scan head transfer unit, And has the same configuration. Therefore, a detailed description of the configuration of the laser marking unit 40 will be omitted.

The method of marking the production data 70 by the laser marking unit 40 is not particularly limited. For example, as shown in FIG. 8, the laser marking unit 40 is provided at both ends of each polarizing film The production data 70 can be marked. As shown in FIG. 8, the defective film Fc has the same area as the normal film Fa, because the film device according to the second embodiment of the present invention carries out a cutting operation irrespective of defects. Therefore, the production data 70 can be marked not only in the normal film Fa but also in the defective film Fc, and can be used as data for tracking the production history. However, the present invention is not limited thereto, and the production data 70 may be selectively marked only on the normal film Fa.

The kind of the markable production data 70 is not particularly limited. For example, as shown in FIGS. 9A and 9B, the production data 70 includes a unique number 91, a production date 92, a roll number 93, a production quantity 94, , Bad quantity (96), and bad identification mark (97).

The unique number 91 is selectively assigned only to the normal film Fa and is used to identify the normal film Fa from the other normal films Fa and includes a vendor code number 91a, a film code number 91b, And a film serial number 91c and the like.

The production quantity 94 refers to the cumulative quantity of the polarizing film produced by cutting to the present from the working roll at the present time and includes both the quantity of the normal film Fa and the quantity of the defective film Fc. (95) represents the cumulative quantity of the normal film (Fa) produced by cutting to the present from the working roll to the present, and the defective quantity (96) represents the accumulated amount of the defective film Fc). ≪ / RTI > For example, the normal film Fa is indicated by "○" and the defective film Fc is indicated by "◯", which indicates whether the polarizing film is a normal film Fa or a defective film Fc. Can be represented by 'x'.

By marking the production data 70 on each of the normal films Fa as described above, the correct quantity of the normal film Fa is calculated by using the good product quantity 95, and the number 91 and the production date 92 ) To accurately track the production history, and visually identify whether the defect is caused by marking the defect. Therefore, it is possible to deliver the contracted quantity of products to the customer in advance without any error, and if the defect is found after the product, the production history can be traced to identify the cause of the defect.

The film sorting unit 50 can separate and discharge the defective film Fc from the normal film Fa.

As shown in Fig. 7, the film sorting unit 50 is installed downstream of the laser marking unit 40, and can selectively separate the defective film Fc from the normal film Fa. The film sorting unit 50 includes a first conveying roller 51, a stacker 52, an outlet 53, an air nozzle 54, a second conveying roller 55, and a reservoir 56 And has the same configuration as the film sorting unit 50 of the film cutting apparatus 1 according to the first embodiment of the present invention. Therefore, detailed description of the configuration of the film sorting unit 50 will be omitted.

As the film sorting unit 50 is thus provided, the normal film Fa is guided to the stacker 52 and then loaded and used as a film after being loaded. The defective film Fc is guided to the storage 56 and stored Is discarded.

10 is a flowchart for explaining a film cutting method according to the first embodiment of the present invention.

Hereinafter, a film cutting method according to the first embodiment of the present invention will be described with reference to FIG.

First, a step S 10 of continuously supplying the polarizing film F may be performed.

The step S10 of continuously feeding the polarizing film F is continuously performed after the polarizing film F is continuously unwound from the winding roller 11 of the conveying unit 10 and then the dancing roller 13, 15, and the guide roller 17 while being supplied to the transfer frame 19 in order.

Next, step (S20) of detecting the defective mark 60 previously marked on the defective area of the polarizing film original F can be performed.

The camera 21 of the defective mark detection unit 20 photographs the polarizing film fabric F and delivers the photographed image to the control unit in step S 20 of detecting the defective mark 60. The control unit It can be performed while detecting the defective mark 60 and specifying the normal region and the defective region of the polarizing film fabric F, respectively.

Thereafter, a step S30 may be performed in which the laser beam is irradiated to the polarizing film F to cut the film raw material into a plurality of films having a predetermined length.

The laser cutting step S30 of the polarizing film F is performed while cutting the polarizing film F using the laser cutting unit 30 having the laser generator 31 and the scan head 32 . If the defective mark 60 is detected in the step S20 of detecting the defective mark 60 described above, the step S30 of cutting the polarizing film F is performed by moving the polarizing film fabric F ) And selectively irradiating a laser beam only to a normal region of the polarizing film fabric F so that the polarizing film fabric F is irradiated with the normal film Fa consisting only of the normal region and the dummy film (Fb). ≪ / RTI >

Next, step (S40) of marking the production data 70 on each of the plurality of polarized films cut out can be performed.

More specifically, the step (S40) of marking the production data 70 on each of the plurality of polarizing films may be performed while ejecting ink to each of the plurality of polarizing films to mark the production data 70, And marking the production data 70, respectively.

In the case where the polarizing film F is divided into the normal film Fa and the dummy film Fb in the step S30 of cutting the polarizing film F as described above, Step S40 may be performed while marking the production data 70 selectively only on the normal film Fa. The type of the markable production data 70 is not particularly limited and may include at least any one of a unique number 72 and a good product quantity 78, for example.

On the other hand, in the case of marking the production data 70 by irradiating a plurality of polarizing films with laser respectively, a step S 30 of cutting the polarizing film F and a step S 40 May be performed at the same time while irradiating the polarizing film fabric F with a laser.

Thereafter, a step S50 of separating and discharging the dummy film Fb from the normal film Fa may be performed.

The step S50 of separating and discharging the dummy film Fb from the top injects air into the dummy film Fb so that the dummy film Fb is discharged to the discharge port 53 through which the dummy film Fb can selectively flow. As shown in FIG.

Next, a step (S60) of recovering the normal film Fa may be performed.

The step S60 of recovering the normal film Fa is performed while loading the normal film Fa into the stacker 52 capable of sequentially stacking the dummy film Fb and the separated normal film Fa .

11 is a flowchart for explaining a film cutting method according to a second embodiment of the present invention.

In the film cutting method according to the second embodiment of the present invention, the polarizing film end F is cut in a wooden form having the cutter 84, and the defective mark 60 is detected after the cut end of the polarizing film Which is different from the film cutting method according to the first embodiment of the present invention. Hereinafter, a description of the overlapping description with reference to FIG. 11 will be omitted or briefly described, and a film cutting method according to the second embodiment of the present invention will be described with a focus on the differences.

First, a step S 110 of supplying the polarizing film F may be performed.

Next, a step (S 120) of cutting the polarizing film web F to a plurality of films having a predetermined length and width in a wooden form having the cutter 84 may be performed.

The step S 120 of cutting the polarizing film fabric F includes a pressing member 82 movably installed on the conveying frame 19 and a pressing member 82 attached to the pressing member 82 to cut the polarizing film fabric F And cutting the polarizing film fabric F into a plurality of polarizing films having a predetermined length and width by using a wooden cutting unit 80 having a plurality of cutters 84 capable of cutting the polarizing film F. [

Thereafter, a step (S 130) of detecting a defective mark 60 previously marked on the defective area of the polarizing film F by a plurality of polarizing films is performed.

In the step of detecting the defective mark 60, the camera 21 of the defective mark detection unit 20 transmits the shot image generated by photographing the polarizing film to the control unit, and the control unit displays the defective mark 60 And detecting a defective film (Fc) including a normal film (Fa) formed only in the normal region of the plurality of polarizing films and a defective region.

Next, step (S 140) of marking the production data 70 on each of the plurality of polarizing films may be performed.

The step of marking the production data 70 on each of the plurality of polarizing films may be performed while ejecting ink to each polarizing film or irradiating the laser. The number of markable production data 70 is not particularly limited. For example, the number 91 of production, the quantity of good 94, the quantity of good 95, the quantity of bad 96, Or the like.

Thereafter, a step of separating and discharging the defective film Fc from the normal film Fa may be performed.

Next, a step of recovering the normal film Fa may be performed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not to be limited to the details thereof and that various changes and modifications will be apparent to those skilled in the art. And various modifications and variations are possible within the scope of the appended claims.

1: Film cutting apparatus 10: Feeding unit
11: take-up roller 13: dancing roller
15: Loading machine 17: Guide roller
19: Transfer frame 20: Bad mark detection unit
21: camera 21a: first camera
21b: second camera 22: detection unit frame
23: guide rail 24: slider
25: stator 26: mover
27: Linear scale 28: Scale head
30: laser cutting unit 31: laser generator
32: scan head 33: cutting unit frame
34: Cross rail 34a: Slot
35: Slider 36: Lead Screw
37: drive motor 40: laser marking unit
50: Film sorting unit 51: First conveying roller
52: Stacker 53: Outlet
54: air nozzle 55: second conveying roller
56: storage bin 60: bad mark
70: Production data 72: Unique number
72a: vendor code number 72b: film code number
72c: film serial number 74: production date
76: Roll number 78: Good quantity
80: Wood cutting unit 82: Press member
84: Cutter 90: Production data
91: Original number 91a: Manufacturer
91b: Film code number 91c: Film serial number
92: Production date 93: Roll number
94: Production quantity 95: Good quantity
96: Bad quantity 97: Bad indication
F: polarizing film fabric Fa: normal film
Fb: Dummy film Fc: Bad film

Claims (24)

1. A film cutting apparatus capable of cutting continuously fed film fabrics,
A defective mark detection unit capable of detecting a defective mark previously marked in a defective area of the original of the film;
A normal film made of only a normal region and having a predetermined length and having a predetermined length, and a dummy region formed at least partially in a defective region, A laser cutting unit for cutting the film fabric so as to be divided into a film; And
A marking unit for marking production data of a normal film comprising, for each normal film, at least one of an inherent number individually assigned to each normal film and an accumulated total amount of normal films formed so far, Wherein the film is a film. The method according to claim 1,
The marking unit includes:
And the inkjet printing unit is capable of marking the production data by ejecting ink onto each normal film. The method according to claim 1,
The marking unit includes:
Wherein the laser marking unit is a laser marking unit capable of marking the production data by irradiating laser to each normal film. The method of claim 3,
Wherein the laser cutting unit cuts the film material and marks the production data to function as the laser marking unit. delete The method according to claim 1,
Further comprising a film sorting unit capable of separating and discharging the dummy film from the normal film,
Wherein the film sorting unit comprises:
An outlet through which the dummy film can be selectively introduced;
At least one air nozzle for injecting air into the discharge port such that the dummy film is inclined; And
And a dummy film reservoir storing the dummy film introduced into the discharge port. delete 1. A film cutting apparatus capable of cutting continuously fed film fabrics,
A defective mark detection unit capable of detecting a defective mark previously marked in a defective area of the original of the film;
A wooden cutting unit having a plurality of cutters capable of cutting the film material, and cutting the film material so that the film material is divided into a plurality of films having a predetermined width and length; And
For each normal film made up of only the normal region of the plurality of films, the number assigned individually to each normal film, the cumulative total quantity of the normal film formed so far, and the identification And a marking unit for marking the production data of the normal film including at least one of the mark and the mark. 9. The method of claim 8,
The marking unit comprising:
And an inkjet printing unit capable of marking the production data by discharging ink to the plurality of films. 9. The method of claim 8,
Wherein the laser marking unit is a laser marking unit capable of marking the production data by irradiating the plurality of films with a laser. 9. The method of claim 8,
The marking unit is characterized in that for each of the defective films wherein at least a part of the plurality of films is defective, the defective film including at least one of the total number of the defective films formed so far and the identification film Marking the production data of the film,
Wherein the marking unit marks the total quantity of the film including the normal film and the defective film so far divided for each of the plurality of films. 12. The method of claim 11,
Further comprising a film sorting unit capable of separating and discharging the defective film from the normal film,
Wherein the film sorting unit comprises:
An outlet through which the defective film can be selectively introduced;
At least one air nozzle for injecting air into the discharge port such that the defective film is inclined; And
And a defective film storage chamber in which the defective film introduced into the discharge port is stored. (a1) continuously feeding a film material;
(a2) detecting a defective mark previously marked on a defective area of the original of the film;
(a3) a normal film which passes the defect region of the film as it is and selectively irradiates only the normal region of the film fabric with a laser, the normal end of the film having a predetermined length and consisting only of a normal region, Cutting the film fabric so as to be divided into a dummy film composed of the dummy film;
(a4) for each normal film, marking production data of a normal film comprising at least one of an inherent number individually assigned to each normal film and an accumulated total number of normal films formed so far; And
(a5) recovering the normal film. delete 14. The method of claim 13,
(a6) is performed between the step (a4) and the step (a5), air is injected into the dummy film to introduce the dummy film into an outlet through which the dummy film can selectively flow, And separating and discharging the film from the normal film. 14. The method of claim 13,
Wherein the step (a4) comprises:
And printing is performed while discharging ink onto each normal film and marking the production data. 14. The method of claim 13,
Wherein the step (a4) comprises:
Wherein the step (c) is performed while irradiating each normal film with a laser to mark the production data. 18. The method of claim 17,
The steps (a3) and (a4) may comprise:
And irradiating the laser beam to the film fabric at the same time. delete (b1) continuously feeding the film stock;
(b2) detecting a defective mark previously marked on the defective area of the original of the film;
(b3) cutting the film fabric so that the film fabric is divided into a plurality of films having a predetermined width and length, using a wooden mold having a cutter capable of cutting the film fabric;
(b4) For each of the normal films formed only in the normal region of the plurality of films, the number assigned individually to each normal film, the cumulative total quantity of the normal film formed so far, A denim system for marking production data of a normal film comprising at least one of identification marks; And
(b5) recovering the normal film. 21. The method of claim 20,
Wherein the step (b3) comprises:
And printing is performed while discharging ink onto each normal film and marking the production data. 21. The method of claim 20,
Wherein the step (b3) comprises:
Wherein the step (c) is performed while irradiating each normal film with a laser to mark the production data. 21. The method of claim 20,
The step (b4) may include at least one of the total number of the defective films formed so far and the identification mark indicating that the film is a defective film, with respect to each of the defective films where at least a part of the plurality of films is defective Is performed while marking the production data of the defective film,
Wherein the step (b4) is performed while marking the total number of the films formed so far including the normal film and the defective film, for each of the plurality of films. 24. The method of claim 23,
(b6) is performed between the step (b4) and the step (b5), and injects air into the defective film to introduce the defective film into an outlet through which the defective film can selectively flow, And separating and discharging the film from the normal film.

Images