CN103991269A - Stripping device and stripping method of multilayer flexible film - Google Patents

Abstract

The invention provides a stripping device of a multilayer flexible film. A stripping knife of the stripping device is of a columnar structure with a circular bead polygonal cross section, and is provided with a plurality of arc stripping surfaces with different bending radiuses and bending angles; during use, different stripping surfaces can be selected according to different films for stripping and processing without replacing the stripping knife, and thus the application range of the stripping knife is greatly enlarged; a relationship theory of a geometrical parameter and a stripping effect of the stripping knife is further applied, and an optimal stripping knife structure is designed and optimized, and thus optimal stripping quality and stripping efficiency are achieved; the stripping device is simple in structure and low in cost, and has a wide application prospect in the field of packaging of a large-area flexible device.

Description

A kind of stripping off device of multi-layer flexible film and stripping means

Technical field

The present invention relates to a kind of stripping off device and stripping means of multi-layer flexible film, relate in particular to a kind of stripping off device and stripping means for electronic tag is peeled off from carrier band.

Background technology

Flexible electronic is by electronic device deposition or is transferred to the technology that forms circuit on flexible base, board, as the emerging electronic technology of one, flexible electronic is with flexibility/ductility and efficient, the low cost fabrication technique of its uniqueness, there is wide application prospect in fields such as information, the energy, medical treatment, national defence, as flexible electronic displays, Organic Light Emitting Diode, RFID, thin-film solar cell panel etc.

In flexible electronic device manufacture and encapsulation process, often need separate multiple layer membrane structure, but traditional back bonding technique (flip-chip) cannot realize peeling off and shifting of large area flexible structure.For the production of RFID label, according to the building form of electronic tag, the packaging technology of electronic tag can be divided into front road encapsulation He Hou road encapsulation two parts.The encapsulation of front road refers to label chip is bonded to the process that forms electronic tag core body in antenna feed point; The encapsulation of rear road refers to electronic tag core body is encapsulated in to the electronic tag production process that forms finished product in different materials.For example, in the production process of RFID intelligent label, need to, by the large area flexible Inlay label after pasting chip after film is cut, peel off and transfer on another carrier band.In Hou road encapsulation and the automatic mounting device of label, label peel off and transfer is one of key point.For another example the label peeling relating on the automatic placement equipment of intelligent chip.These problems all belong to the problem of peeling off of multi-layer film structure.Therefore, designing suitable mechanism for stripping has great importance.

Existing stripping off device adopts hoe scaler or the roller structure of wedge shape, release surface is arc surface, arc angle is generally 30 degree or less, the film of motion is through arc surface and when bending, because the cohesive force between plural layers is not enough to overcome topmost thin film rigidity, thereby surface layer film is not peeled off automatically with bottom film bending.There are obvious shortcomings and deficiencies in existing plural layers stripping off device: the one, and the angle of the wedge shape peel tip of hoe scaler is fixed value, be generally 30 degree or lower, can not adapt to the variation that between different thin-film materials, different layers, cohesive force, different carrier band feeding rates etc. are peeled off parameter, thereby while making to peel off different film, need to change the hoe scaler of different angles, charge stripping efficiency is reduced, and the scope of application of hoe scaler is narrow; The 2nd, owing to lacking the geometric parameter of peel tip and the theoretical research of peeling off effect relation, the angle of only determining by rule of thumb peel tip in practice is 30 degree or lower, hoe scaler lacks the design of scientific quantification, peel force and release liner are incompatible, make to peel off the not good enough or infringement substrate film structure of effect; The 3rd, single fixing hoe scaler structure cannot realize the function of the multiple label on carrier band being carried out to selective detachment, has further reduced the application of stripping off device.

Summary of the invention

The defect and the Improvement requirement that exist for the stripping off device of prior art multi-layer flexible film, technical purpose of the present invention is to provide a kind of stripping off device of multi-layer flexible film, the hoe scaler of stripping off device is fillet polygon column structure, there is the circular arc release surface of multiple differently curved radiuses and angle of bend, when use, can select different release surface to peel off processing according to different films, need not change hoe scaler, greatly improve the scope of application of hoe scaler, and the geometric parameter that further uses hoe scaler and the relational theory of peeling off effect, design optimization obtains optimum hoe scaler structure, obtain best quality and the charge stripping efficiency peeled off, and apparatus structure is simple, with low cost.

Another technical purpose of the present invention is to provide a kind of stripping means of multi-layer flexible film, the release mechanism of applying label and correlation computations formula, there is the release surface of best circular arc angle of bend and radius by calculative determination, or by the carrier band feed speed of calculative determination optimum, then peel off processing, make to peel off quality and charge stripping efficiency optimum.

The present invention is that the technical scheme that realizes technical purpose employing is:

A kind of stripping off device of multi-layer flexible film, comprise hoe scaler, described hoe scaler is that cross section is the polygonal column structure of fillet, and every longitudinal circular arc cylinder of described hoe scaler is release surface, and described each release surface has different arc radius R and circular arc angle of bend θ.

A stripping off device for multi-layer flexible film, described multi-layer flexible film comprises at least one deck carrier band and label, the arc radius R of a release surface of described hoe scaler and circular arc angle of bend θ, with the interface energy of one group of carrier band and label the bending potential energy G of label _inlay, label maximum allowable tensile stress σ _crackbetween meet following relation simultaneously:

$G_{\mathrm{Inlay}}=A_{0}D\frac{f\left(\mathrm{\θ}\right)}{R^3}>G_{\mathrm{crit}}^{\mathrm{Inlay}/\mathrm{substrate}}=G_0[1+{\left(\frac{v}{v_0}\right)}^n]$ ①

${\mathrm{\&sigma;}}_{\mathrm{Inlay}}=\frac{E_2{t}_2}{2(1-{u2}^2){R\cos }^3\mathrm{\&theta;}}<{\mathrm{\&sigma;}}_{\mathrm{crack}}$ ②

In above formula: G _inlayfor the bending potential energy of label, for the interface energy between label and carrier band;

R is the arc radius of release surface, the circular arc angle of bend that θ is release surface;

D is the bending stiffness of label, wherein, E ₁for the elastic modelling quantity of label, t ₁for the thickness of label, u ₁for the Poisson's ratio of label material;

F (θ) is the increasing function about θ, in small angle range, meets

A ₀for the constant with dimension;

G ₀for the intrinsic interface energy between label and carrier band, for peeling rate levels off to the interface energy of 1 o'clock;

V is the feed speed of carrier band, v ₀for carrier band with reference to feed speed, v ₀to make carrier band feed speed, what n was carrier band peels off index;

σ _inlayfor the maximum stress that carrier band bears, σ _crackfor the maximum allowable stress of carrier band; E ₂for the elastic modelling quantity of carrier band, t ₂for the thickness of carrier band, u ₂for the Poisson's ratio of carrier band.

A stripping off device for multi-layer flexible film, the polygonal limit of the cross section number of described hoe scaler is 3～7.

A stripping off device for multi-layer flexible film, the pivot of described hoe scaler equates to the distance of each release surface.

A stripping off device for multi-layer flexible film, one or more longitudinal lateral surface of described hoe scaler is arc cylinder.

A stripping off device for multi-layer flexible film, described hoe scaler adopts high-abrasive material to make.

A kind of stripping off device of multi-layer flexible film, described stripping off device also comprises mechanism for stripping and receiving mechanism, described mechanism for stripping comprises hoe scaler, peels off motor, synchronous pulley, Timing Belt and driving pulley, described synchronous pulley is connected on the output shaft of peeling off motor, described synchronous pulley is synchronizeed and is connected with driving pulley by Timing Belt, described driving pulley is connected on the fixed axis of hoe scaler, and described driving pulley can drive hoe scaler to rotate while rotation.

A stripping off device for multi-layer flexible film, described receiving mechanism comprises idler roller, pair roller, floating roller and material receiving roller, film to be stripped passes through hoe scaler successively, first idler roller, pair roller, second idler roller, floating roller, the 3rd idler roller, be wrapped on material receiving roller.

Multi-layer flexible film stripping off device, for a stripping means for multi-layer flexible film, comprises the following steps:

1) according to the elastic modelling quantity of definite label, carrier band, thickness and Poisson's ratio, the intrinsic interface energy of label and carrier band, the allowable tensile stress of carrier band, and the feed speed of carrier band, with reference to feed speed with peel off index, calculative determination meets one group of radius of curvature R and the angle of bend value θ of following formula;

$G_{\mathrm{Inlay}}=A_{0}D\frac{f\left(\mathrm{\&theta;}\right)}{R^3}>G_{\mathrm{crit}}^{\mathrm{Inlay}/\mathrm{substrate}}=G_0[1+{\left(\frac{v}{v_0}\right)}^n]$ ①

${\mathrm{\&sigma;}}_{\mathrm{Inlay}}=\frac{E_2{t}_2}{2(1-{u2}^2){R\cos }^3\mathrm{\&theta;}}<{\mathrm{\&sigma;}}_{\mathrm{crack}}$ ②

2) select step 1) one group of radius of curvature R determining and the release surface of angle of bend value θ, carry out peeling off of label according to definite carrier band feed speed.

Multi-layer flexible film stripping off device, for a stripping means for multi-layer flexible film, comprises the following steps:

1) according to according to the elastic modelling quantity of definite label, carrier band, thickness and Poisson's ratio, the intrinsic interface energy of label and carrier band, carrier band with reference to feed speed and peel off index, the allowable tensile stress of carrier band, and the radius of curvature R of definite release surface and angle of bend value θ, calculative determination meets the carrier band feed speed of following formula;

$G_{\mathrm{Inlay}}=A_{0}D\frac{f\left(\mathrm{\&theta;}\right)}{R^3}>G_{\mathrm{crit}}^{\mathrm{Inlay}/\mathrm{substrate}}=G_0[1+{\left(\frac{v}{v_0}\right)}^n]$ ①

${\mathrm{\&sigma;}}_{\mathrm{Inlay}}=\frac{E_2{t}_2}{2(1-{u2}^2){R\cos }^3\mathrm{\&theta;}}<{\mathrm{\&sigma;}}_{\mathrm{crack}}$ ②

2) according to step 1) definite carrier band feed speed, peeling off of the enterprising rower label of definite release surface.

Compared with prior art, the advantage that the present invention has is:

1. the stripping off device of multi-layer flexible film provided by the invention, hoe scaler is provided with the circular arc release surface of multiple differently curved angles and radius, realize, with same, cutter is peeled off to different membrane structures (for example different film thicknesses, material, the number of plies), and meet multiple processing working condition requirement (process velocity).

2. the stripping off device of multi-layer flexible film provided by the invention, when the bending potential energy of applying label is greater than the interface energy of label and carrier band, the strippable release mechanism of label, and use the computing formula of bending potential energy and interface energy, arc angle and the arc radius of the release surface by science calculative determination hoe scaler, make each release surface of hoe scaler have critical circle arc angle and the arc radius of peeling off a certain certain thin films, the geometric parameter of hoe scaler obtains optimized design.

3. the stripping off device of multi-layer flexible film provided by the invention; the maximum stress that application carrier band bears should be less than the mechanics principle of maximum allowable stress; there is the arc angle and the arc radius that at least meet a certain specific carrier band force request by each release surface of calculative determination hoe scaler, guarantee to protect carrier band structure not to be destroyed in effective peeling label.

4. hoe scaler adopts high-abrasive material to make, and as Hardmetal materials, to reduce wear, the arc radius of release surface is remained unchanged.

5. the stripping means of multi-layer flexible film provided by the invention, the release mechanism of applying label and correlation computations formula, there is the release surface of best circular arc angle of bend and radius by calculative determination, or by the carrier band feed speed of calculative determination optimum, then peel off processing, make to peel off quality and charge stripping efficiency optimum.

6. when the stripping off device of multi-layer flexible film provided by the invention is used for peeling off of electronic tag, can be according to the parameter of peeling off of specific carrier band and Inlay label, determine the release surface of correct radial and angle, both ensured peeling label effectively, avoid again damaging because arc radius or angle too small can cause the fracture of carrier band and label internal circuit, well solved the problem of peeling off that may occur in intelligent label manufacture.

7., when the stripping off device of multi-layer flexible film provided by the invention is peeled off for electronic tag, can also, by selecting suitable release surface, carry out selective detachment to the different I nlay label on same carrier band.

8. when the stripping off device of multi-layer flexible film provided by the invention is peeled off for electronic tag, Inlay also can be set and detect front device, for the detection to Inlay and screening, and can optionally bad Inlay be peeled off or be retained according to testing result.

Brief description of the drawings

Fig. 1 is the structural representation of the stripping off device of multi-layer flexible film of the present invention.

Fig. 2 is the structural representation of the mechanism for stripping of the stripping off device of multi-layer flexible film of the present invention.

Fig. 3 is the structural representation of the first embodiment of the hoe scaler of the stripping off device of multi-layer flexible film of the present invention.

Fig. 4 is the structural representation of the second embodiment of the hoe scaler of the stripping off device of multi-layer flexible film of the present invention.

Fig. 5 is the schematic diagram of the first embodiment of the stripping means of multi-layer flexible film of the present invention.

Fig. 6 is the schematic diagram of the second embodiment of the stripping means of multi-layer flexible film of the present invention.

Wherein: 1-mechanism for stripping, 11-hoe scaler, 12-peels off motor, 13-synchronous pulley, 14-Timing Belt, 15-driving pulley, 2-receiving mechanism, 21-idler roller, 22-pair roller, 23-floats roller, 24-material receiving roller.

Detailed description of the invention

In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.

Present inventor studies discovery, and whether label peels off the interface energy depending between label and carrier band bending potential energy G with label _inlayrelation.Interface energy forms cohesive force between label and carrier band, makes the effect of label in company with carrier band bending, and larger, the label of interface energy is more not easy to be stripped from; What bending potential energy index label self rigidity formed make, and that label keeps is straight, not with the effect of carrier band bending, larger, the label of bending potential energy is more easily stripped from.Obviously,, in the time that bending potential energy is greater than interface energy, label is stripped from.

Present inventor also finds, the interface energy computing formula of carrier band and label is:

$G_{\mathrm{crit}}^{\mathrm{Inlay}/\mathrm{substrate}}=G_0[1+{\left(\frac{v}{v_0}\right)}^n].$

The bending potential energy computing formula of label is:

In interface energy computing formula: G ₀for the intrinsic interface energy of carrier band and label, peeling rate levels off to the bonding energy of 1 o'clock, G ₀relevant with the material of carrier band and label; V is the feed speed of carrier band; v ₀for carrier band with reference to feed speed, v ₀to make time feed speed; N is the index of peeling off of carrier band, and n and release surface radian, carrier band material are relevant, and the circular arc radian that is PET and release surface when carrier band is less than time, n=0.4 ± 0.02, the circular arc radian that is PET and release surface when carrier band material is time, n ≈ 0.25.

In the bending potential energy computing formula of label: the bending stiffness that D is label, wherein, E ₁for the elastic modelling quantity of label, t ₁for the thickness of label, u ₁for the Poisson's ratio of label material; R is the arc radius of release surface, the circular arc angle of bend that θ is release surface; A ₀it is the constant with dimension; F (θ) is the increasing function about θ, in small angle range: $f\left(\mathrm{\&theta;}\right)=\frac{{15\tan }^4\mathrm{\&theta;}+18{\tan }^2\mathrm{\&theta;}+3}{{\cos }^3\mathrm{\&theta;}}.$

Can find out according to above-mentioned formula: interface energy and label material, carrier band material, carrier band feed speed are relevant, and when label and one timing of carrier band material, carrier band feed speed is larger, and interface energy is larger, is more not easy peeling label; Bending potential energy is directly proportional to the rigidity of label, and the rigidity of label is larger, and the bending potential energy of label is also larger, also more easily peels off; The bending potential energy of label is also relevant with angle of bend, the bending radius of release surface, and bending radius is less, angle of bend is larger, and the bending potential energy of label is larger, more easily peels off.

Present inventor also finds, although the arc radius of release surface is less, angle of bend is larger, is more conducive to film and peels off, and arc radius reduces and angle of bend increases, and becomes unfavorable for the stressed of carrier band, has increased the possibility of carrier band fracture, destruction.Therefore, the arc radius of release surface and the design of angle of bend, also should make load that carrier band bears in safe range, and the maximum tension stress that carrier band bears should be less than the maximum allowable tensile stress σ of carrier band _crack:

${\mathrm{\&sigma;}}_{\mathrm{substrate}}=\frac{E_2{t}_2}{2(1-{u_2}^2){R\cos }^3\mathrm{\&theta;}}<{\mathrm{\&sigma;}}_{\mathrm{crack}}$

According to above-mentioned theory, the application provides a kind of stripping off device of multi-layer flexible film, hoe scaler 11 for cross section be the polygonal column structure of fillet, every longitudinal circular arc cylinder of hoe scaler 11 is release surface, each release surface has different arc radius R and circular arc angle of bend θ, thereby realize, with same, cutter is peeled off to different membrane structures (thickness of for example structure, material, the number of plies), and meet multiple processing working condition requirement (process velocity).

The stripping off device of a kind of multi-layer flexible film provided by the invention, the arc radius R of a release surface of described hoe scaler 11 and angle of bend θ, with the interface energy of one group of carrier band and label the bending potential energy G of label _inlay, carrier band maximum allowable tensile stress σ _crackbetween meet following relation simultaneously:

$G_{\mathrm{Inlay}}=A_{0}D\frac{f\left(\mathrm{\&theta;}\right)}{R^3}>G_{\mathrm{crit}}^{\mathrm{Inlay}/\mathrm{substrate}}=G_0[1+{\left(\frac{v}{v_0}\right)}^n]$ ①

${\mathrm{\&sigma;}}_{\mathrm{substrate}}=\frac{E_2{t}_2}{2(1-{u2}^2){R\cos }^3\mathrm{\&theta;}}<{\mathrm{\&sigma;}}_{\mathrm{crack}}$ ②

The stripping off device of a kind of multi-layer flexible film provided by the invention, according to above-mentioned theory formula, the geometric parameter of hoe scaler is obtained to optimized design, each release surface there is peel off critical circle arc angle and the arc radius of a certain certain thin films, both ensured peeling label effectively, and avoided again destroying because arc bend bilge radius or angle too small can cause carrier band.

Referring to Fig. 3, the structural representation of the first embodiment of the hoe scaler of the stripping off device of multi-layer flexible film of the present invention, hoe scaler is that cross section is the leg-of-mutton column structure of fillet, thereby formed the release surface of A, B, tri-longitudinal circular arc cylinders of C.According to definite label and carrier band, by aforementioned theoretical formula, the geometric parameter of hoe scaler is carried out to optimized design, obtain three groups of different arc radius R and circular arc angle of bend θ, the arc radius R and the circular arc angle of bend θ that are A, B, tri-release surface of C are respectively: α=30 °, β=60 °, θ=90 °; R _a=0.5mm, R _b=1mm, R _c=5mm.

Referring to Fig. 4, the structural representation of the second embodiment of the hoe scaler of the stripping off device of multi-layer flexible film of the present invention, hoe scaler is that cross section is the hexagonal column structure of fillet, forms the release surface of A, B, C, D, E, six longitudinal circular arc cylinders of F.According to definite label and carrier band, by aforementioned theoretical formula, the geometric parameter of hoe scaler is carried out to optimized design, obtain six groups of different arc radius R and circular arc angle of bend θ, the arc radius R and the circular arc angle of bend θ that are A, B, C, D, E, six release surface of F are respectively: ∠ A=80 °, ∠ B=100 °, ∠ C=120 °, ∠ D=135 °, ∠ E=140 °, ∠ F=150 °, R _a=0.5mm, R _b=1mm, R _c=2mm, R _d=3mm, R _e=5mm, R _f=10mm.

The stripping off device of a kind of multi-layer flexible film provided by the invention, preferably 3～7 of the polygonal limit of the cross section numbers of hoe scaler 11.

The stripping off device of multi-layer flexible film provided by the invention, the pivot that hoe scaler 11 is preferably set equates to the distance of each release surface, makes hoe scaler in the time changing release surface, without the locus that regulates hoe scaler.

The stripping off device of multi-layer flexible film provided by the invention, is preferably made as arc cylinder by one or more longitudinal lateral surface of hoe scaler, can adapt to peeling off of large thick label.

The stripping off device of multi-layer flexible film provided by the invention, the preferred high-abrasive material of hoe scaler material, as Hardmetal materials, to reduce wear, remains unchanged the arc radius of release surface.

Referring to Fig. 1, the structural representation of the stripping off device of multi-layer flexible film of the present invention, comprises mechanism for stripping 1 and receiving mechanism 2, is respectively used to peeling off and reclaiming of film.Mechanism for stripping 1 comprises hoe scaler 11, motor 12, synchronous pulley 13, Timing Belt 14 and driving pulley 15, wherein, synchronous pulley 13 is connected on the output shaft of peeling off motor 12, synchronous pulley 13 is synchronizeed connection by Timing Belt 14 with driving pulley 15, driving pulley 15 is connected on the fixed axis of hoe scaler 11.Therefore, under the drive of motor 12, drive driving pulley 15 to rotate by lazy-tongs, further drive hoe scaler to rotate, regulate the suitable arc surface of peeling off of hoe scaler to working face position, carry out peeling off of film.Setting is exclusively used in the electric adjusting device that rotates hoe scaler,

Can pass through PC control electric adjusting device, realize peeling off of automatic screening label.

The stripping off device of multi-layer flexible film provided by the invention, receiving mechanism 2 comprises idler roller 21, pair roller 22, floating roller 23 and material receiving roller 24.Film to be stripped through hoe scaler 11, first idler roller 21, pair roller 22, second idler roller 21, floating roller 23, the 3rd idler roller 21, is finally wrapped on material receiving roller 24 successively.Pair roller 22 is for controlling the feed speed of carrier band, ensure peeling rate control accurately and stable, floating roller 23 is for cushioning carrier band due in pair roller place and different vibrations that cause of speed at material receiving roller place.

The stripping means of a kind of multi-layer flexible film provided by the invention, comprises the following steps:

1) according to the elastic modelling quantity of definite label, carrier band, thickness and Poisson's ratio, the intrinsic interface energy of label and carrier band, the allowable tensile stress of carrier band, and the feed speed of carrier band, with reference to feed speed with peel off index, calculative determination meets one group of radius of curvature R and the angle of bend value θ of following formula;

$G_{\mathrm{Inlay}}=A_{0}D\frac{f\left(\mathrm{\&theta;}\right)}{R^3}>G_{\mathrm{crit}}^{\mathrm{Inlay}/\mathrm{substrate}}=G_0[1+{\left(\frac{v}{v_0}\right)}^n]$ ①

${\mathrm{\&sigma;}}_{\mathrm{substrate}}=\frac{E_2{t}_2}{2(1-{u2}^2){R\cos }^3\mathrm{\&theta;}}<{\mathrm{\&sigma;}}_{\mathrm{crack}}$ ②

2) select step 1) one group of bending radius determining and the release surface of angle of bend value carry out peeling off of label.

The stripping means of a kind of multi-layer flexible film provided by the invention, can also comprise the following steps:

1) according to according to the elastic modelling quantity of definite label, carrier band, thickness and Poisson's ratio, the intrinsic interface energy of label and carrier band, carrier band with reference to feed speed and peel off index, the allowable tensile stress of carrier band, and the radius of curvature R of definite release surface and angle of bend value θ, calculative determination meets the carrier band feed speed of following formula;

$G_{\mathrm{Inlay}}=A_{0}D\frac{f\left(\mathrm{\&theta;}\right)}{R^3}>G_{\mathrm{crit}}^{\mathrm{Inlay}/\mathrm{substrate}}=G_0[1+{\left(\frac{v}{v_0}\right)}^n]$ ①

${\mathrm{\&sigma;}}_{\mathrm{substrate}}=\frac{E_2{t}_2}{2(1-{u2}^2){R\cos }^3\mathrm{\&theta;}}<{\mathrm{\&sigma;}}_{\mathrm{crack}}$ ②

2) according to step 1) definite carrier band feed speed, peeling off of the enterprising rower label of definite release surface.

Referring to Fig. 5, the first embodiment of the stripping means of multi-layer flexible film of the present invention.Multi-layer flexible film to be stripped comprises carrier band, label 1, label 2 successively from bottom to upper strata, wherein, the interface energy between carrier band and label 1 is interface energy between label 1 and label 2 is the bending potential energy of label 1 is G _inlay1, the bending potential energy of label 2 is G _inlay2, and meet following relation:

Set film feed speed and keep 150mm/s constant, by selecting the release surface of different arc radius and angle of bend, realize the processing of peeling off of different operating modes.

Selecting arc radius R is that 0.5mm, angle of bend θ are the release surface of 30 °, and label 1 and label 2 are peeled off simultaneously, as shown in Fig. 5 (a); Selecting arc radius R is that 1.0mm, angle of bend θ are the release surface of 60 °, and label 2 is peeled off, label 1 is unstripped, as shown in Fig. 5 (b); Selecting arc radius R is that 5.0mm, angle of bend θ are the release surface of 90 °, and label 1 and label 2 are all unstripped, as shown in Fig. 5 (c).

Referring to Fig. 6, the second embodiment of the stripping means of multi-layer flexible film of the present invention, multi-layer flexible film to be stripped is with the first embodiment.

Selected arc radius R is that 0.5mm, angle of bend θ are the release surface of 30 °, by changing carrier band feed speed, realizes the processing of peeling off of different operating modes.

The feed speed of selected carrier band is 150mm/s, and aimed thin film 1 separates with aimed thin film 2, as shown in Fig. 6 (a); The feed speed of selected carrier band is 300mm/s, and aimed thin film 1 separates with aimed thin film 2, as shown in Fig. 6 (b).

When the stripping off device of multi-layer flexible film provided by the invention is peeled off for electronic tag, can be by selecting suitable release surface, different I nlay label on same carrier band is carried out to selective detachment, or select to peel off by regulating the method for carrier band feed speed to realize.On the automatic placement equipment of stripping off device label of multi-layer flexible film provided by the invention, checkout equipment can also be set before stripping off device, checkout equipment detects when label is intact, and stripping off device just carries out label peeling; Checkout gear detects when label has damage, does not peel off.

Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.

Claims (10)

1. the stripping off device of a multi-layer flexible film, comprise hoe scaler (11), it is characterized in that: described hoe scaler (11) for cross section be the polygonal column structure of fillet, every longitudinal circular arc cylinder of described hoe scaler (11) is release surface, and described each release surface has different arc radius R and circular arc angle of bend θ.

2. the stripping off device of a kind of multi-layer flexible film according to claim 1, described multi-layer flexible film comprises at least one deck carrier band and label, it is characterized in that: the arc radius R of a release surface of described hoe scaler (11) and circular arc angle of bend θ, with the interface energy of one group of carrier band and label the bending potential energy G of label _inlay, label maximum allowable tensile stress σ _crackbetween meet following relation simultaneously:

$G_{\mathrm{Inlay}}=A_{0}D\frac{f\left(\mathrm{\&theta;}\right)}{R^3}>G_{\mathrm{crit}}^{\mathrm{Inlay}/\mathrm{substrate}}=G_0[1+{\left(\frac{v}{v_0}\right)}^n]$ ①

${\mathrm{\&sigma;}}_{\mathrm{Inlay}}=\frac{E_2{t}_2}{2(1-{u2}^2){R\cos }^3\mathrm{\&theta;}}<{\mathrm{\&sigma;}}_{\mathrm{crack}}$ ②

In above formula: G _inlayfor the bending potential energy of label, for the interface energy between label and carrier band;

R is the arc radius of release surface, the circular arc angle of bend that θ is release surface;

D is the bending stiffness of label, wherein, E ₁for the elastic modelling quantity of label, t ₁for the thickness of label, u ₁for the Poisson's ratio of label material;

F (θ) is the increasing function about θ, in small angle range, meets

A ₀for the constant with dimension;

G ₀for the intrinsic interface energy between label and carrier band, for peeling rate levels off to the interface energy of 1 o'clock;

V is the feed speed of carrier band, v ₀for carrier band with reference to feed speed, v ₀to make carrier band feed speed, what n was carrier band peels off index;

σ _inlayfor the maximum stress that carrier band bears, σ _crackfor the maximum allowable stress of carrier band; E ₂for the elastic modelling quantity of carrier band, t ₂for the thickness of carrier band, u ₂for the Poisson's ratio of carrier band.

3. the stripping off device of a kind of multi-layer flexible film according to claim 1 and 2, is characterized in that: the polygonal limit of the cross section number of described hoe scaler (11) is 3～7.

4. the stripping off device of a kind of multi-layer flexible film according to claim 1 and 2, is characterized in that: the pivot of described hoe scaler (11) equates to the distance of each release surface.

5. the stripping off device of a kind of multi-layer flexible film according to claim 1 and 2, is characterized in that: one or more longitudinal lateral surface of described hoe scaler (11) is arc cylinder.

6. the stripping off device of a kind of multi-layer flexible film according to claim 1 and 2, is characterized in that: described hoe scaler (11) adopts high-abrasive material to make.

7. the stripping off device of a kind of multi-layer flexible film according to claim 1 and 2, it is characterized in that: described stripping off device also comprises mechanism for stripping (1) and receiving mechanism (2), described mechanism for stripping (1) comprises hoe scaler (11), peel off motor (12), synchronous pulley (13), Timing Belt (14) and driving pulley (15), described synchronous pulley (13) is connected on the output shaft of peeling off motor (12), described synchronous pulley (13) is synchronizeed connection by Timing Belt (14) with driving pulley (15), described driving pulley (15) is connected on the fixed axis of hoe scaler (11), described driving pulley (15) can drive hoe scaler (11) to rotate while rotation.

8. the stripping off device of a kind of multi-layer flexible film according to claim 7, it is characterized in that: described receiving mechanism (2) comprises idler roller (21), pair roller (22), floating roller (23) and material receiving roller (24), film to be stripped passes through hoe scaler (11) successively, first idler roller (21), pair roller (22), second idler roller (21), floating roller (23), the 3rd idler roller (21), be wrapped on material receiving roller (24).

9. a kind of multi-layer flexible film stripping off device according to claim 2, for the stripping means of multi-layer flexible film, is characterized in that comprising the following steps:

1) according to the elastic modelling quantity of definite label, carrier band, thickness and Poisson's ratio, the intrinsic interface energy of label and carrier band, the allowable tensile stress of carrier band, and the feed speed of carrier band, with reference to feed speed with peel off index, calculative determination meets one group of radius of curvature R and the angle of bend value θ of following formula;

$G_{\mathrm{Inlay}}=A_{0}D\frac{f\left(\mathrm{\&theta;}\right)}{R^3}>G_{\mathrm{crit}}^{\mathrm{Inlay}/\mathrm{substrate}}=G_0[1+{\left(\frac{v}{v_0}\right)}^n]$ ①

${\mathrm{\&sigma;}}_{\mathrm{Inlay}}=\frac{E_2{t}_2}{2(1-{u2}^2){R\cos }^3\mathrm{\&theta;}}<{\mathrm{\&sigma;}}_{\mathrm{crack}}$ ②

2) select step 1) one group of radius of curvature R determining and the release surface of angle of bend value θ, carry out peeling off of label according to definite carrier band feed speed.

10. a kind of multi-layer flexible film stripping off device according to claim 2, for the stripping means of multi-layer flexible film, is characterized in that comprising the following steps:

1) according to according to the elastic modelling quantity of definite label, carrier band, thickness and Poisson's ratio, the intrinsic interface energy of label and carrier band, carrier band with reference to feed speed and peel off index, the allowable tensile stress of carrier band, and the radius of curvature R of definite release surface and angle of bend value θ, calculative determination meets the carrier band feed speed of following formula;

$G_{\mathrm{Inlay}}=A_{0}D\frac{f\left(\mathrm{\&theta;}\right)}{R^3}>G_{\mathrm{crit}}^{\mathrm{Inlay}/\mathrm{substrate}}=G_0[1+{\left(\frac{v}{v_0}\right)}^n]$ ①

${\mathrm{\&sigma;}}_{\mathrm{Inlay}}=\frac{E_2{t}_2}{2(1-{u2}^2){R\cos }^3\mathrm{\&theta;}}<{\mathrm{\&sigma;}}_{\mathrm{crack}}$ ②

2) according to step 1) definite carrier band feed speed, peeling off of the enterprising rower label of definite release surface.