KR20190063504A - Protecting film peeling apparatus and peeling method for the same - Google Patents

Abstract

Disclosed is an apparatus for peeling a protective film. According to the present invention, the apparatus for peeling a protective film comprises: a peeling unit peeling a first protective film bonded to one surface of a protective member; a peeling angle setting unit supporting the peeling unit and setting a peeling angle of the peeling unit; a release force measurement unit measuring a release force applied to the first protective film by the peeling unit; and a control unit controlling the peeling angle of the peeling angle setting unit based on the release force measured by the release force measurement unit.

Description

PROTECTING FILM PEELING APPARATUS AND PEELING METHOD FOR THE SAME [0002]

The present invention relates to a protective film peeling apparatus and a protective film peeling method.

In recent display device manufacturing fields such as LCD (Liquid Crystal Display), OLED (Organic Light Emitting Diode) and TSP (Touch Screen Panel), various kinds of panels and optical films are used.

Such a panel or optical film is processed while moving in various process spaces during the process. In order to prevent contamination or damage of the surface of the panel or optical film during the movement of the process space, a protective film is attached to the surface of the panel or optical film In many cases.

These protective films must be removed prior to performing the process on the panel or optical film.

The bonding strength between the panel or the optical film and the protective film is one of the most important characteristics when the protective film is attached to a panel or an optical film, for example, between two different materials.

Referring to FIG. 1A, a front protective film and a rear protective film are respectively attached to front and back surfaces of a panel or a protective film.

The front protective film is not peeled off in the peeling operation in which the front protective film is peeled off from the panel or the optical film, and a defect often occurs due to peeling of the panel or optical film together with the back protective film.

However, the prior art has a problem that the cause of defects can not be accurately determined by measuring only the adhesive strength of a protective film attached to one side of a panel or an optical film.

Referring to FIG. 1B, when the adhesive strength of the protective film attached to one side of the panel or the optical film is not so high as not to cause defects of the panel or the optical film itself but is high enough to cause peeling failure such as partial peeling, If set, it is necessary to change the peel angle.

However, in the prior art, when the peeling angle of the peeling section 1 is reset, the protective film is wrinkled at the point of inflection 2, so that it can not be peeled without an inflection point as shown in Fig. 1C. .

Korean Patent No. 10-1438541

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art described above, and it is an object of the present invention to provide a protective film peeling apparatus and a protective film peeling method which can diversify peeling motion based on the releasing force of a protective film.

According to an aspect of the present invention, there is provided a protective film peeling apparatus comprising: a peeling unit for peeling a first protective film adhered to one surface of a protective member; A peeling angle setting unit for supporting the peeling unit and setting a peeling angle of the peeling unit; A releasing force measuring unit for measuring a releasing force applied to the first protective film by the peeling unit; And a control unit for controlling the peeling angle of the peeling angle setting unit based on the releasing force measured by the releasing force measuring unit.

The control unit may include a storage unit for storing a first adhesive strength of the protective member and the first protective film, and a second adhesive strength between the second protective film and the protective member coated on the other surface of the protective member; And a comparison unit comparing the releasing force with the first adhesive strength and the second adhesive strength.

When the releasing force is greater than the first bonding strength and the second bonding strength, the control unit reduces the moving speed of the peeling unit or outputs an operation stop signal.

The control unit outputs a signal for increasing the moving speed of the peeling unit when the releasing force is smaller than the first adhesive strength.

The control unit outputs a control signal for changing the peeling angle to the peeling angle setting unit when the releasing force is between the first bonding strength and the second bonding strength.

The peeling angle setting unit may include: a guide bracket for setting an initial peeling angle; A cam shaft that rotates within the guide bracket; And a clamping unit for controlling the rotation of the camshaft.

Wherein the clamping portion comprises: a pair of arms for clamping or unclamping the camshaft;

A cam follower formed on the pair of arms and fixing the camshaft when the camshaft is clamped; And an air chuck for causing the pair of arms to operate.

The peeling angle setting section includes a motor for changing the rotation angle.

The peeling unit includes a grip holder for gripping one end of the first protective film.

The peeling unit includes a peeling roller for initially peeling one end of the first protective film and peeling off the first peeling, and a gripper for gripping one end of the peeled first protective film.

According to an aspect of the present invention, there is provided a protective film peeling apparatus comprising: a peeling unit for peeling a first protective film adhered to one surface of a protective member; A guide bracket for setting an initial peel angle; A cam shaft that rotates within the guide bracket; A clamping unit for clamping or unclamping the camshaft; A releasing force measuring unit for measuring a releasing force applied to the first protective film by the peeling unit; And a control unit for controlling the peeling angle of the first protective film based on the releasing force measured by the releasing force measuring unit.

When the releasing force is greater than a first adhesive strength between the protective member and the first protective film and a second adhesive strength between the second protective film coated on the other surface of the protective member and the protective member, Decelerates the movement speed of the negative part or outputs an operation stop signal.

When the releasing force is greater than the first bonding strength and the second bonding strength, the control unit reduces the moving speed of the peeling unit or outputs an operation stop signal.

According to an aspect of the present invention, there is provided a protective film peeling method comprising: setting a protective member bonded with a first protective film to a peeling section at a set angle; Initiating peeling of the first protective film by gripping one end of the first protective film; Measuring a releasing force applied to the first protective film by the peeling unit; Determining whether the releasing force is greater than a second adhesive strength between a second protective film applied to the other surface of the protective member and the protective member; And peeling off the first protective film while controlling the peeling angle of the peeling angle setting portion based on the releasing force when the releasing force is smaller than the second adhesive strength.

And determining that the protective member is defective when the releasing force is larger than the second adhesive strength.

The step of peeling the first protective film may include: measuring the releasing force; Determining whether the releasing force is greater than a first adhesive strength of the protective member and the first protective film; Determining whether the releasing force is greater than the second adhesive strength when the releasing force is greater than the first adhesive strength; And changing the peeling angle when the releasing force is between the first bonding strength and the second bonding strength.

And reducing the moving speed of the peeling section or stopping the peeling operation when the releasing force is larger than the first bonding strength and the second bonding strength.

And increasing the moving speed of the peeling section when the releasing force is smaller than the first adhesive strength in the step of measuring the releasing force.

The step of changing the peeling angle includes: releasing the clamping of the camshaft;

Peeling off the camshaft while freely rotating; And completing the peeling.

The step of changing the peeling angle may include rotating the motor in a first direction; And rotating the motor in a second direction opposite to the first direction, wherein the direction of rotation of the motor is alternated periodically.

According to the present invention, peeling is performed while comparing the releasing force with the first and second adhesive strengths, so that it is possible to accurately determine whether the peeling failure is defective in the protective film peeling apparatus or defective in the protective member.

In addition, according to the present invention, it is possible to change the peeling angle based on the releasing force but without causing abrupt change, so that the wrinkling phenomenon of the protective film can be prevented from occurring even when the peeling angle is changed during peeling progress, It can be diversified.

FIG. 1A is a cross-sectional view showing normal peeling and peeling failure of a protective film according to the prior art,
1B and 1C are schematic views showing a protective film peeling motion according to the prior art,
2 is a block diagram showing a protective film peeling apparatus according to the present invention,
3A to 3C are views showing a first embodiment of a peel angle setting unit according to the present invention,
FIG. 3D is a view showing a second embodiment of a peel angle setting unit according to the present invention,
4A to 4B are views showing a first embodiment of the peeling section according to the present invention,
4C to 4D are views showing a second embodiment of the peeling section according to the present invention,
5A and 5B are side views showing the connection of the peeling angle setting unit and the peeling unit according to the present invention,
5C to 5D are diagrams showing the operation of the first embodiment of the peel angle setting unit,
6 is a schematic view showing the peeling motion according to the present invention,
7 is a flowchart showing a protective film peeling method according to the present invention,
8 is a flowchart schematically showing the protective film peeling step in the protective film peeling method according to the present invention,
9 is a flowchart showing a first embodiment of a method of rotating a peeling angle setting portion in a protective film peeling method according to the present invention,
10 is a flowchart showing a second embodiment of the method of rotating the peeling angle setting portion in the protective film peeling method according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Thus, in some embodiments, well known process steps, well known device structures, and well-known techniques are not specifically described to avoid an undesirable interpretation of the present invention. Like reference numerals refer to like elements throughout the specification.

In the drawings, the thickness is enlarged to clearly represent the layers and regions. Furthermore, although the terms first, second, etc. may be used herein to describe various components, these components are not limited by the terms. The terms are used for the purpose of distinguishing one element from another.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

Before discussing the present invention in detail, a protective film and a protective member peeled off according to the present invention will be described.

Referring to Fig. 1A, a protective member adhered with a protective film is illustrated. At this time, the first protective film f is adhered to one surface of the protective member P and the second protective film f 'is adhered to the other surface of the protective member P. The protective member P to be peeled off in the present invention may be a panel, a window glass, or an optical film, but is not limited thereto. In addition, the protective member P is not limited to one layer or need to be limited to two layers, and may be formed of one layer or two layers stacked.

The first protective film (f) must be peeled from the protective member (P) during the normal peeling operation. However, defective peeling often occurs in which the first protective film (f) and the protective member (P) simultaneously peel off from the second protective film (f ') during the peeling operation. This is because the first adhesive strength of the first protective film f and the protective member P is higher than the second adhesive strength of the second protective film f ' This is a problem that arises.

For example, when the first adhesive strength is 4 gf and the second adhesive strength is 10 gf, the first protective film (f) can be peeled off and no peeling failure occurs. However, when the first adhesive strength is 17 gf and the second adhesive strength The first protective film f and the protective member P are peeled from the second protective film f 'at the same time and peeling failure may occur.

In this case, in the present invention, the releasing force applied to the protective film when peeling the protective film is measured, the releasing force is compared with the adhesive strength to determine the cause of the defect, and the peeling operation is performed while changing the peeling angle corresponding to the releasing force .

[Protection film peeling apparatus]

Hereinafter, the protective film peeling apparatus according to the present invention will be described in detail with reference to the drawings.

3A to 3C are views showing a first embodiment of a peeling angle setting unit according to the present invention, and FIG. 3D is a diagram showing a peeling angle setting according to the present invention. FIG. 2 is a block diagram showing a protective film peeling apparatus according to the present invention, 4A to 4B are views showing a first embodiment of the peeling section according to the present invention, and Figs. 4C to 4D are views showing a second embodiment of the peeling section according to the present invention FIGS. 5A and 5B are side views showing the connection of the peeling angle setting unit and the peeling unit according to the present invention, FIGS. 5C to 5D are views showing the operation of the first embodiment of the peeling angle setting unit, And Fig.

Referring to FIG. 2, the protective film peeling apparatus according to the present invention includes a measuring unit 10, a driving unit 20, and a control unit 30.

The measuring unit 10 includes a releasing force measuring unit 11 for measuring the releasing force applied to the first protective film by the peeling unit, a moving speed measuring unit 13 for measuring the moving speed of the peeling unit 200 or 200 ' .

The releasing force measuring unit 11 measures the releasing force from the time when the peeling of the first protective film (f) is started until the peeling of the first protecting film (f).

The releasing force measuring unit 11 measures a load applied to a grip holder formed on a part of the peeling unit 200 or 200 'to grip one end of the first protective film f, A load applied to a gripper which grips one end of the peeled first protective film (f) can be measured.

Although the releasing force measuring unit 11 is disposed at a part of the peeling units 200 and 200 ', the releasing force measuring unit 11 may be provided at other places than the peeling units 200 and 200'.

4A, the peeling unit 200 or 200 'according to the present invention may include a grip type (Grip) type grip unit which is provided at one end of the first protective film f and grips and pulls a pull tab gripped by the grip holder, Type and may be a rollers and a grip type which grips one end of the first protective film f which has been initially peeled off after the initial peeling by the adhesive roller without a pull tab as shown in FIG. ). This will be described in detail later.

In the case of the grip type, the releasing force measuring unit 11 can measure the releasing force by measuring the load applied to the grip holder. In case of the roller and grip type, The release force can be measured by measuring the load applied to the gripper.

The releasing force measuring unit 11 may be formed of a load cell or a push pull gauge.

The releasing force measured by the releasing force measuring unit 11 is transmitted to the control unit 30, and the driving force of the peeling unit 200 or 200 'can be controlled by comparing the first bonding strength and the second bonding strength.

The moving speed measuring unit 13 is formed on a part of the driving unit 20 to measure the moving speed of the peeling unit 200 or 200 '. The moving speed measuring unit 13 can measure the moving speed of the peeling units 200 and 200 'by measuring the rotational speed of a motor (not shown) for moving the peeling units 200 and 200', for example. Since the moving speed measuring unit 13 has a known configuration, a detailed description thereof will be omitted.

The moving speed of the peeling unit 200 or 200 'measured by the moving speed measuring unit 13 is transmitted to the control unit 30 so that the moving speed of the peeling unit 200 or 200' can be controlled based on the releasing force have.

The driving unit 20 supports the peeling units 200 and 200 'and the peeling units 200 and 200' for peeling the first protective film bonded to one surface of the protective member P and the peeling units 200 and 200 ' And a peeling angle setting unit (100, 100 ') for setting the peeling angle of the film.

The peeling angle setting units 100 and 100 'set the initial peeling angles of the protective member P and the peeling units 200 and 200' before the peeling start and set the control unit 30 to change the peeling angle based on the releasing force. .

When setting the initial peeling angle, preferably, the peeling angle setting unit 100 or 100 'confirms the corner position of the first protective film f so that the grip position or nulling position is the corner position of the first protective film f Alignment can be performed to match.

In this case, the initial peeling angle may be varied depending on the setting. It is of course possible to set the corner of the protective member P to be 45 degrees with respect to the waterline, but it is of course possible to set the initial peeling angle at another angle.

According to the first embodiment of the peeling angle setting part 100, the peeling angle can be changed freely relative to the axis parallel to the normal to the protective member P, and the peeling angle setting part 100 ' It is possible to change the peeling angle by including a motor for changing the rotation angle.

3A to 3C, the first embodiment of the peeling angle setting unit 100 includes a guide bracket 110 for setting an initial peeling angle, a cam shaft 120 rotating in the guide bracket 110, And a clamping unit 130, 140, 150, 160 for controlling the rotation of the camshaft.

One end of the guide bracket 110 is coupled to a peeling housing part and the other end of the guide bracket 110 is provided with a cam shaft 120 and clamping parts 130, 140, 150 and 160, 200 'through the first, second, and third portions 130, 140, 150, and 160, respectively.

That is, the peeling units 200 and 200 'are coupled to the camshaft 120 of the peeling angle setting unit 100 as shown in FIGS. 5A and 5B to perform clamping of the clamping units 130, 140, 150 and 160, Or the rotation is controlled by unclamping.

The gripping part 200 is connected to the lower part of the camshaft 110 by the connection bracket 210 as shown in FIG. 5A, and the roller and grip type peeling part 200 ' Is connected to the lower portion of the camshaft 110 by the connection bracket 210 'as shown in FIG. 5B.

The cam shaft 120 is provided so that its shaft can rotate within the guide bracket 110, and the degree of rotation can be imparted by the bearing 160.

The camshaft 120 is clamped or unclamped by the pair of arms 150 and the pair of arms 150 can be operated by the air chuck 130. [

The pair of arms 150 are provided with a plurality of rotatable cam followers 140 so as to prevent vibration due to shocks when the camshaft 120 is clamped or unclamped.

The camshaft 120 preferably has an elliptical cross section, but may be formed in a circular shape according to the clamping force.

One end of the pair of arms 150 is provided in the air chuck 130 so as to clamp or unclamp the cam shaft 120 by the action of the air chuck 130. [

That is, when the air chuck 130 drives the pair of arms 150 in directions away from each other, the clamping of the cam shaft 120 is released so that the cam shaft 120 freely rotates. Further, when the air chuck 130 is driven so that the pair of arms 150 are brought close to each other, the cam shaft 120 is clamped and the rotation of the cam shaft 120 is restricted.

The inside of the pair of arms 150 is formed so as to correspond to the shape of the outer circumferential surface of the camshaft 120.

The operation of the first embodiment of the peel angle setting unit 100 will be described with reference to Figs. 5C and 5D.

The first protective film f is peeled off at an initial peeling angle without rotating the peeling units 200 and 200 'in a state in which the pair of arms 150 clamp the camshaft 120 do.

5D, when the air chuck 130 is driven so that the pair of arms 150 are moved away from each other, the cam shaft 120 is unclamped so that the peeling portions 200 and 200 ' 1 protective film (f).

When the air chuck 130 is driven so that the pair of arms 150 are brought close to each other after the peeling is completed, the peeling portions 200 and 200 'return to the initial peeling angle position as shown in FIG. 5C.

Referring to FIG. 3D, the second embodiment of the peel angle setting unit 100 'includes a guide bracket 110' for setting an initial peel angle, a cam shaft 120 'rotating in the guide bracket 110' And a motor 130 'that rotates the camshaft 120'.

Since the guide bracket 110 'is the same as that of the first embodiment of the peel angle setting unit 100, detailed description is omitted.

The camshaft 120 'is provided to rotate within the guide bracket 110'.

The cam shaft 120 'is engaged with one end of the peeling unit 200 or 200' and can be peeled off while the peeling unit 200 or 200 'rotates in the peeling operation by the rotation of the cam shaft 120' .

The camshaft 120 'is connected to the motor 130' and rotates in response to the rotation of the motor 130 '.

The rotation of the motor 130 'is controlled by the control unit 30. When the releasing force is between the first bonding strength and the second bonding strength, the control section 30 can output a control signal for changing the peeling angle to the motor 130 'of the peeling angle setting section 100' .

The motor 130 'may be controlled to rotate in the first direction or the second direction according to a predetermined period.

In this case, the first direction may be a clockwise direction, and the second direction may be a counterclockwise direction opposite to the first direction.

The motor 130 'may be a stepping motor, but the present invention is not limited thereto, and other types of motors may be used depending on the design.

According to the first embodiment of the peeling unit 200, the peeling is performed by the grip type, and according to the second embodiment of the peeling unit 200 ', by the roller and the grip type (Roller & Grip Type) Peeling can be performed.

4A and 4B, the peeling unit 200 according to the first embodiment includes a connection bracket 210, a cylinder 220, a grip holder 230, a link 240, a load cell, 250, and a linear guide 260.

The connecting bracket 210 is connected to the peeling angle setting unit 100. The cylinder 220 is for gripping the grip holder 230 and the grip holder 230 is connected to the peeling angle setting unit 100, After the pull tab is gripped, a force is applied by the cylinder 220 to perform peeling.

The link 240 is to cause the grip holder 230 to contact or separate the pair of rollers in order to grip or release the pull tab of the first protective film f.

The load cell 250 is provided on one side of the connection bracket 210 and is attached to the first protective film f that is peeled from the protective member (not shown) by the peeling unit 200 when peeling off, It measures the force.

The linear guide 260 is for maintaining the horizontal position of the peeling unit 200.

4C and 4D, the peeling unit 200 'according to the second embodiment includes a connection bracket 210', a cylinder 220 ', an adhesive roller 230', a grip cylinder 240 ' A load cell 250 ', a linear guide 260', and a gripper 270 '.

The connection bracket 210 ', the load cell 250', and the linear guide 260 'are formed of the connection bracket 210, the load cell 250, (Linear Guide) 260, detailed description thereof will be omitted.

The cylinder 220 'is for setting a pressure applied to the pressure roller 230', and the pressure roller 230 'is for initially peeling one end of the one protective film f, and the grip cylinder 240' Is for driving the gripper 270 ', and the gripper 270' grips one end of the initially peeled first protective film f.

The load cell 250 'is provided on one side of the connection bracket 210' and is attached to the first protective film f which is peeled off from the protective member (not shown) by the peeling unit 200 ' And the release force applied is measured.

As an example, load cells 250 and 250 'load cells 250 and 250' may be applied, but a push pull gauge may be provided instead of load cells 250 and 250 '.

The control unit 30 controls the peeling angle of the peeling angle setting unit 100 based on the releasing force measured by the releasing force measuring unit 11.

The control unit 30 includes a storage unit 31 and a comparison unit 33. [

The storage unit 31 is provided between the protective member P and the first protective film f and between the second protective film f 'coated on the other surface of the protective member P and the protective member P. [ Lt; / RTI >

That is, the first adhesive strength is a value measured in advance by the first protective film (f) attached to the protective member (P) with a predetermined strength and stored in the storage unit (31). The second adhesive strength is a value measured in advance by the second protective film f 'adhering to the protective member P with a predetermined strength and stored in the storage unit 31. The second adhesive strength is larger than the first adhesive strength.

The first and second adhesive strengths can be measured by a known adhesive strength measuring specimen.

In addition, the storage unit 31 stores a releasing force measured in real time at the time of peeling, and can display a releasing force measured in real time when peeling off through a display unit (not shown).

Thus, according to the present invention, it is possible to control the peeling angle based on the releasing force by measuring the releasing force in real time, and further analyze the releasing force as Big data, .

The first and second adhesive strengths and releasing forces stored in the storage unit 31 are transmitted to the comparator 33. [

The comparator 33 compares the releasing force measured in real time with the first adhesive strength and the second adhesive strength.

Thus, the control unit 30 determines whether the peeling units 200 and 200 'change the peeling angle or not by controlling the releasing force and the first and second adhesive strengths, which are compared in the comparing unit 33.

When the releasing force is larger than the first adhesive strength and the second adhesive strength, the control unit 30 decelerates the moving speed of the peeling unit 200 or 200 'or outputs an operation stop signal.

If the releasing force is larger than the first and second adhesive strengths, the first protective film f and the protective member P can be peeled from the second protective film f 'at the same time.

If the releasing force is larger than the first bonding strength and the second bonding strength while the moving speed of the peeling sections 200 and 200 'is constant, the control section 30 outputs an operation stop signal, .

In this case, the control unit 30 decelerates the moving speed of the peeling units 200 and 200 'measured by the moving speed measuring unit 13 to prevent the protection member P from being damaged.

When the releasing force is smaller than the first adhesive strength, the control unit 30 outputs a signal for increasing the moving speed of the peeling unit 200 or 200 '.

The first protective film f may be peeled off from the protective member P so that the releasing force is greater than the first adhesive strength so that the control unit 30 can remove the peeling units 200 and 200 ') In order to increase the moving speed of the moving object.

In the present invention, the moving speed of the peeling unit 200 or 200 'is increased in order to increase the releasing force. However, it is also possible to increase the releasing force by increasing the pressure of the cylinder, Is not limited to this.

When the releasing force is larger than the first adhesive strength by the increase of the releasing force, the control section 30 can output a control signal to change the peeling angle.

When the releasing force is between the first bonding strength and the second bonding strength, the control section 30 outputs a control signal for changing the peeling angle to the peeling angle setting sections 100 and 100 '.

According to the first embodiment of the peel angle setting unit 100, the peel angle can be changed while the cam shaft 120 freely rotates with respect to the axis parallel to the normal line of the protective member P, According to the second embodiment of the present invention, the peeling angle can be changed while causing the motor 130 'to periodically rotate in the first direction or the second direction.

When the releasing force is between the first adhesive strength and the second adhesive strength, the second protective film f 'is not peeled off and only the first protective film f peels off.

In the case where only the first protective film f is peeled off, peeling can be performed while changing the peeling angle as shown in Fig. 6 by the peeling angle setting portions 100 and 100 'as in the embodiment of the present invention, It is of course possible to perform the initial peeling angle roll separation without changing the peeling angle.

[Protective film peeling method]

FIG. 7 is a flow chart showing a protective film peeling method according to the present invention, FIG. 8 is a schematic illustration of a protective film peeling step in the protective film peeling method according to the present invention, Fig. 10 is a flowchart showing a second embodiment of the method of rotating the peeling angle setting portion in the protective film peeling method according to the present invention.

7 to 10, a protective film peeling method according to the present invention includes a step of setting a protective member P adhered with a first protective film f to a peeling portion 200 or 200 'at a set angle (S200) of starting the peeling of the first protective film (f) by gripping one end of the first protective film (f) by the peeling unit (200) the releasing force is larger than the second adhesive strength between the second protective film f 'applied to the other surface of the protective member P and the protective member P (step S300) (S400). When the releasing force is smaller than the second adhesive strength, peeling off the first protective film (f) while controlling the peeling angle of the peeling angle setting portions (100, 100 ') based on the releasing force (S500).

In step S100, the initial peeling angle is set and the protective member P is set to the initial setting angle with respect to the peeling units 200 and 200 '. When setting the initial peeling angle, preferably, the peeling angle setting unit 100 or 100 'confirms the corner position of the first protective film f so that the grip position or nulling position is the corner position of the first protective film f Alignment can be performed to match.

In the step S200 of starting the peeling, the peeling is started by gripping the pull tab provided at one end of the first protective film f and gripped by the grip holder, or the peeling can be started without the pull tab, The first peeled first protective film f is peeled by gripping one end of the first peeled protective film f.

The releasing force measurement step S300 is a step of measuring a releasing force applied to the first protective film. In the case of a grip type, the releasing force measuring part 11 applies a force to the grip holder The release force can be measured by measuring the load, and in the case of roller and grip type (Roller & Grip Type), the releasing force can be measured by measuring the load applied to the gripper.

The releasing force measuring unit 11 measures the releasing force from the time when the peeling of the first protective film (f) is started until the peeling of the first protecting film (f).

Also, although not shown, the moving speed of the peeling sections 200 and 200 'can be measured by the peeling section moving speed measuring section 13 while measuring the releasing force.

In the step S400 of determining whether the releasing force is larger than the second adhesive strength between the second protective film f 'coated on the other surface of the protective member P and the protective member P, , A step S500 of peeling the first protective film f corresponding to the releasing force is performed.

In the step S400 of determining whether the releasing force is greater than the second adhesive strength between the second protective film f 'coated on the other side of the protective member P and the protective member P, (S600) of judging that the protective member (P) is defective if it is larger than the adhesion strength. That is, if the releasing force is larger than the second adhesive strength from the beginning of peeling, peeling can not be performed. This is the case where the protective member P is defective rather than defective of the protective film peeling apparatus.

8, the step S500 of peeling off the first protective film f while controlling the peeling angle of the peeling angle setting portions 100 and 100 'on the basis of the releasing force includes the steps of measuring the releasing force S510), determining whether the releasing force is greater than a first adhesive strength between the protective member (P) and the first protective film (f520), and if the releasing force is greater than the first adhesive strength, (S530), and if the releasing force is between the first bonding strength and the second bonding strength, changing the peeling angle (S560).

(S520) of determining whether the releasing force is greater than the first bonding strength between the protective member (P) and the first protective film (f), and increasing the moving speed of the peeling section when the releasing force is smaller than the first bonding strength S570).

That is, the releasing force must be greater than the first adhesive strength so that the first protective film f can be peeled off from the protective member P. The control unit 30 increases the releasing force to remove the peeling unit 200 , And 200 ', respectively.

After the step of increasing the moving speed (S570), a step S520 is performed again to determine whether the releasing force is greater than the first bonding strength between the protective member P and the first protective film f.

If the releasing force is greater than the first adhesive strength and the second adhesive strength in the step S520 of determining whether the releasing force is greater than the first adhesive strength of the protective member P and the first protective film f, The moving speed of the peeling section is decelerated (S550) or the peeling operation is stopped (S540).

When the releasing force is again greater than the first adhesive strength and the second adhesive strength during the peeling operation, the controller 30 outputs an operation stop signal to determine that the protective member P is defective.

When the releasing force is greater than the first and second adhesive strengths during the peeling operation, the control unit 30 decelerates the moving speeds of the peeling units 200 and 200 'measured by the moving speed measuring unit 13 So that breakage of the protection member P is prevented.

9, the first embodiment of the method of rotating the peeling angle setting portion in the protective film peeling method includes a step of releasing the clamping of the camshaft 120 (S561), a step of peeling off the camshaft 120 while freely rotating Step S563, and completing the peeling (S565).

When the clamping of the camshaft 120 is released as shown in FIG. 5D, the peeling units 200 and 200 'are freely rotated within a predetermined rotation angle limit to perform peeling.

That is, when the releasing force is between the first bonding strength and the second bonding strength, the control section 30 outputs a control signal for changing the peeling angle to the peeling angle setting sections 100 and 100 ' The cam shaft 120 rotates freely with respect to an axis parallel to the normal of the cam shaft 120, and the angle of peeling can be changed.

The method may further include a step (S567, S569) in which the cam shaft 120 is returned to the initial position by clamping the cam shaft 120 as shown in FIG. 5C after the peeling is completed (S565).

Referring to FIG. 10, the second embodiment of the method for rotating the peeling angle setting portion in the protective film peeling method includes rotating the motor in the first direction (S561 '), moving the motor in the second direction opposite to the first direction (S563 ').

That is, when the releasing force is between the first bonding strength and the second bonding strength, the controller 30 periodically rotates the motor 130 'of the peeling angle setting unit 100' in the first direction or the second direction The peeling angle can be changed.

Thus, according to the present invention, peeling is performed while comparing the releasing force with the first and second adhesive strengths, so that it is possible to accurately determine whether the peeling failure is defective of the protective film peeling apparatus or defective of the protective member.

In addition, according to the present invention, it is possible to change the peeling angle based on the releasing force but without causing abrupt change, so that the wrinkling phenomenon of the protective film can be prevented from occurring even when the peeling angle is changed during peeling progress, It can be diversified.

While the present invention has been described in connection with what is presently considered to be practical and exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

10:
11: Release force measuring section
13: Peeling section moving speed measuring section
20:
100, 100 ': Peeling angle setting unit
200, 200 ': peeling portion
30:
31:
33:

Claims (20)

A peeling unit for peeling off the first protective film adhered to one surface of the protective member;
A peeling angle setting unit for supporting the peeling unit and setting a peeling angle of the peeling unit;
A releasing force measuring unit for measuring a releasing force applied to the first protective film by the peeling unit; And
And a control unit for controlling the peeling angle of the peeling angle setting unit based on the releasing force measured by the releasing force measuring unit. The method according to claim 1,
Wherein,
A storage portion for storing a first adhesive strength of the protective member and the first protective film, and a second adhesive strength between the second protective film applied to the other surface of the protective member and the protective member; And
And a comparator for comparing the releasing force with the first adhesive strength and the second adhesive strength. 3. The method of claim 2,
Wherein the control unit reduces the moving speed of the peeling unit or outputs an operation stop signal when the releasing force is larger than the first adhesive strength and the second adhesive strength. 3. The method of claim 2,
Wherein the control section outputs a signal for increasing the moving speed of the peeling section when the releasing force is smaller than the first adhesive strength. 3. The method of claim 2,
And the control section outputs a control signal for changing the peeling angle to the peeling angle setting section when the releasing force is between the first bonding strength and the second bonding strength. The method according to claim 1,
The peeling angle setting unit
A guide bracket for setting an initial peel angle;
A cam shaft that rotates within the guide bracket; And
And a clamping portion for controlling rotation of the camshaft. The method according to claim 6,
The clamping unit
A pair of arms for clamping or unclamping the camshaft;
A cam follower formed on the pair of arms and fixing the camshaft when the camshaft is clamped; And
And an air chuck for operating the pair of arms. The method according to claim 1,
Wherein the peeling angle setting section includes a motor for changing the rotation angle. The method according to claim 1,
Wherein the peeling section includes a grip holder for gripping one end of the first protective film. The method according to claim 1,
Wherein the peeling section comprises a peeling roller for initially peeling one end of the first protective film to peel off the peeling film, and a gripper for gripping one end of the peeled first protective film. A peeling unit for peeling off the first protective film adhered to one surface of the protective member;
A guide bracket for setting an initial peel angle;
A cam shaft that rotates within the guide bracket;
A clamping unit for clamping or unclamping the camshaft;
A releasing force measuring unit for measuring a releasing force applied to the first protective film by the peeling unit; And
And a control unit for controlling the peeling angle of the first protective film based on the releasing force measured by the releasing force measuring unit. 12. The method of claim 11,
When the releasing force is greater than a first adhesive strength between the protective member and the first protective film and a second adhesive strength between the second protective film coated on the other surface of the protective member and the protective member, And decelerates the movement speed of the negative portion or outputs an operation stop signal. 13. The method of claim 12,
Wherein the control unit reduces the moving speed of the peeling unit or outputs an operation stop signal when the releasing force is larger than the first adhesive strength and the second adhesive strength. Setting a protective member adhered with the first protective film to a peeling section at a setting angle;
Initiating peeling of the first protective film by gripping one end of the first protective film;
Measuring a releasing force applied to the first protective film by the peeling unit;
Determining whether the releasing force is greater than a second adhesive strength between a second protective film applied to the other surface of the protective member and the protective member;
And peeling off the first protective film while controlling the peeling angle of the peeling angle setting portion based on the releasing force when the releasing force is smaller than the second adhesive strength. 15. The method of claim 14,
And judging that the protective member is defective when the releasing force is larger than the second adhesive strength. 15. The method of claim 14,
The step of peeling the first protective film comprises:
Measuring the releasing force;
Determining whether the releasing force is greater than a first adhesive strength of the protective member and the first protective film;
Determining whether the releasing force is greater than the second adhesive strength when the releasing force is greater than the first adhesive strength; And
And changing the peeling angle when the releasing force is between the first adhesive strength and the second adhesive strength. 17. The method of claim 16,
Further comprising the step of: decelerating the moving speed of the peeling section or stopping the peeling operation when the releasing force is larger than the first bonding strength and the second bonding strength. 17. The method of claim 16,
And increasing the moving speed of the peeling section when the releasing force is smaller than the first adhesive strength in the step of measuring the releasing force. 17. The method of claim 16,
Wherein the step of changing the peeling angle comprises:
Releasing the clamping of the camshaft;
Peeling off the camshaft while freely rotating; And
And peeling off the protective film. 17. The method of claim 16,
Wherein the step of changing the peeling angle comprises:
Rotating the motor in a first direction;
And rotating the motor in a second direction opposite to the first direction, wherein the rotating direction of the motor is periodically alternated.

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