CN113511547B

CN113511547B - Adhesive tape attaching device

Info

Publication number: CN113511547B
Application number: CN202110779597.4A
Authority: CN
Inventors: 菊池一哉
Original assignee: Shibaura Mechatronics Corp
Current assignee: Shibaura Mechatronics Corp
Priority date: 2018-03-29
Filing date: 2019-03-27
Publication date: 2023-10-20
Anticipated expiration: 2039-03-27
Also published as: CN110316604B; KR20190114762A; KR20210016009A; CN113511547A; KR102214899B1; JP2024036396A; JP2019172327A; KR20210134273A; CN110316604A; KR102365982B1; TW202208267A; JP7131938B2; TWI804023B; JP2022176189A; JP7427055B2; TW201942992A; TWI746954B

Abstract

The application provides a device for attaching an adhesive tape, which can automatically carry out the tape ejection. The laminating device of sticky tape includes: a supply unit (12) for supplying a belt-shaped member (2) to which an adhesive tape (21) is attached to a release tape (22); a bonding part (11) for bonding a bonding surface of the adhesive tape (21) to a bonding object on the opposite side of the release tape (22); a conveying section (14) for feeding the belt-like member (2) from the supply section (12) to the bonding section (11); an imaging unit (18) which aligns the optical axis with the bonding reference position (10) set for the bonding unit (11), and which is disposed on the tape side of the tape-shaped member (2), and which images the tape-shaped member (2) located at the bonding reference position (10); and a determination unit (196) that determines whether or not the position of the head portion of the tape (21) that is pulled out from the new supply reel (120) provided in the supply unit (12) is good, based on the image of the tape-like member (2) obtained by the imaging unit (18).

Description

Adhesive tape attaching device

The application relates to a divisional application of the name of adhesive tape attaching device, which is filed in the original application number 201910236490.8 and the application date 2019, 03 and 27.

Technical Field

The application relates to a bonding device of an adhesive tape.

Background

In a process for manufacturing a flat panel display (flat panel display) such as a liquid crystal display or an organic Electroluminescence (EL) display, it is necessary to mount electronic components on a substrate as a bonding object. The mounting is performed, for example, by: after temporarily press-bonding the electronic component via the tape to the terminal portion provided on the upper surface of the peripheral edge of the substrate, heat and pressure are applied to perform main press-bonding.

The electronic component to be bonded is, for example, an integrated circuit (Integrated Circuit, IC) Chip, tape carrier package (Tape Carrier Package, TCP), chip On Film (COF), or the like. TCP is a package in which a chip such as an IC is mounted on a thin film. The adhesive tape is, for example, a tape having a width of several millimeters and a thickness of about several tens micrometers using an anisotropic conductive film (Anisotropic Conductive Film, ACF) as a raw material. ACF is a film made of resin containing metal particles and having anisotropic conductivity.

Thus, the thin adhesive tape is formed as a tape-like member attached to the release tape. The tape member is fed from a reel (reel) and is pressed against the substrate, and then only the release tape is peeled off and discharged.

When the tape is used up due to the bonding operation, the tape member is manually replaced with a new tape member. Specifically, an operator (operator) performs the following operations. First, the used reel of the adhesive tape is replaced with an unused reel. And a new ribbon member is extracted from the replaced unused reel. The tape of a predetermined length is peeled off from the tip of the extracted tape-like member, and set in the bonding device. The reason why the tape of the front end portion is peeled off in this way is to prevent the following: the tape is attached to a conveying roller or the like that sandwiches and conveys the tape-like member (release tape) from both sides at a position downstream in the conveying direction than the bonding operation position, and thus causes a conveyance failure of the tape-like member.

[ Prior Art literature ]

[ patent literature ]

[ patent document 1] Japanese patent laid-open No. 2004-186387

Disclosure of Invention

[ problem to be solved by the invention ]

When the tape-like member is replaced as described above, in order to ensure the bonding accuracy to the substrate, a head operation of aligning the head portion (hereinafter also simply referred to as "tip") of the tape, which is a slit, at a predetermined position is performed. In the conventional head-out operation, an operator visually inspects and aligns the tape-shaped member with a predetermined position, for example, a bonding operation position, and in terms of the structure of the apparatus, it may be difficult to see the tape-shaped member from the tape side, and it may be difficult to align the tape-shaped member with the predetermined position due to excessive feeding or the like.

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a tape attaching device capable of automatically attaching a tape to a head of a tape.

[ means of solving the problems ]

The adhesive tape attaching device of the present invention comprises: a supply unit configured to supply a tape-like member to which an adhesive tape is attached to the release tape; a bonding part which bonds a bonding surface of the adhesive tape to a bonding object, wherein the bonding surface is opposite to the release tape; a conveying section that feeds the belt-like member from the supply section to the attaching section; an imaging unit which is disposed on the tape side of the tape-shaped member with an optical axis aligned with a bonding reference position set for the bonding unit, and which images the tape-shaped member positioned at the bonding reference position; and a determination unit configured to determine whether or not a position of a leading portion of the tape drawn from a new supply reel provided in the supply unit is good based on the image of the tape-like member obtained by the image pickup unit.

The attaching device of the adhesive tape can also comprise: and a conveyance control unit that calculates a distance between a position of the leading edge of the tape and the bonding reference position, and that, when the determination unit determines that the position of the leading edge of the tape is out of an allowable range including the bonding reference position, the conveyance unit feeds the tape-shaped member so that the leading edge of the tape is positioned at the bonding reference position based on the distance calculated by the conveyance control unit.

The method can also be as follows: the determination unit determines whether or not the tape is present in a region where a plurality of regions are set in the width direction of the tape before and after the attachment reference position, and determines whether or not the position of the head of the tape is good based on the determination result of the determination unit.

The attaching device of the adhesive tape can also comprise: and a cutting section that includes a cutter provided between the supplying section and the attaching section, cuts the tape of the tape-shaped member to form a half-cut line serving as the slit, and feeds the tape-shaped member so that the half-cut line reaches the attaching reference position, wherein the imaging section images the tape-shaped member including the half-cut line, and wherein the determining section detects the half-cut line from the image obtained by the imaging section, and determines whether or not the shape of the cut surface of the half-cut line is good.

The determination unit may determine whether the detected half-cut line is within an allowable range including the bonding reference position.

The attaching device of the adhesive tape can also comprise: and a conveyance control unit that calculates a distance between the half-cut line and the bonding reference position, and that, when the determination unit determines that the half-cut line is out of the allowable range, the conveyance unit feeds the belt-shaped member so that the half-cut line is positioned at the bonding reference position based on the distance calculated by the conveyance control unit.

The method can also be as follows: the attaching portion attaches the tape on the downstream side of the half-cut line to the object to be attached, the imaging portion images the tape-like member attached by the attaching portion, and the determining portion determines whether or not the tape is present in a region where a plurality of areas are set in the width direction of the tape before and after the attaching reference position, and determines whether or not the tape is good based on a determination result of the determining portion.

The attaching device of the adhesive tape can also comprise: and an illumination unit disposed on the tape side of the tape-like member, wherein an optical axis of the illumination unit is oriented toward a bonding reference position set for the bonding unit, and is disposed so as to be inclined at a predetermined angle with respect to a perpendicular direction of the bonding surface of the tape at the bonding reference position.

[ Effect of the invention ]

According to the present invention, an adhesive tape attaching device capable of automatically attaching an adhesive tape to a head can be obtained.

Drawings

Fig. 1 is a schematic configuration diagram of a bonding apparatus according to an embodiment.

Fig. 2 is a functional block diagram of the control unit.

Fig. 3 is a flowchart showing an example of the tape-ejecting operation of the laminating apparatus according to the embodiment.

Fig. 4 (a) is a diagram showing feeding of the belt-like member. Fig. 4 (b) is a diagram for explaining the head of the tape. Fig. 4 (c) is a diagram showing the formation of a half-cut line. Fig. 4 (d) is a diagram for explaining whether the position of the half-cut line is good or not. Fig. 4 (e) is a diagram for explaining the tape-dispensing. Fig. 4 (f 1) is a diagram showing a configuration in which it is determined that there is an adhesive tape on the downstream side of the bonding reference position, and it is determined that the adhesive tape is defective. Fig. 4 (f 2) is a diagram showing a state in which it is determined that the tape is not present on the upstream side of the bonding reference position, and it is determined that the tape is defective. Fig. 4 (g) is a diagram showing a configuration in which it is determined that there is no tape on the downstream side of the bonding reference position and there is tape on the upstream side of the bonding reference position, and it is determined that the configuration is good.

Fig. 5 (a) is a sectional view showing a photographing state of a belt-like member in the bonding apparatus of the comparative example. Fig. 5 (b) is an image of the belt-like member obtained by the bonding apparatus of the comparative example.

Fig. 6 (a) is a sectional view showing a state of photographing a belt-like member in the bonding apparatus according to the embodiment. Fig. 6 (b) is an image of a belt-like member obtained by the bonding apparatus according to the embodiment.

Fig. 7 shows the detection results of the inclination angle θ of the optical axis of the illumination unit with respect to the perpendicular line of the belt-like member and the slit of the tape at the above angle.

Fig. 8 (a) is a schematic diagram showing the feeding correction of the belt-like member when the half tangent line is shifted to the position near the bonding reference. Fig. 8 (b) is a schematic view showing the feeding correction of the belt-like member when the half-cut line is deviated beyond the bonding reference position.

Fig. 9 is a flowchart showing an example of the bonding operation of the tape of the bonding apparatus to the substrate.

Fig. 10 (a) to 10 (d) are diagrams showing bonding operations of the bonding apparatus according to the embodiment. Fig. 10 (a) shows a state in which the tape is completely discharged and the substrate is provided. Fig. 10 (b) shows a half-cut state. Fig. 10 (c) shows a state in which the belt-like member is fed. Fig. 10 (d) shows a state in which the adhesive tape is attached to the substrate and the release tape is peeled off.

Fig. 11 is a schematic view for explaining an arrangement form of an illumination unit of a bonding apparatus according to another embodiment.

Description of symbols

1: adhesive tape attaching device

2: band-shaped member

10: bonding reference position

11: bonding part

12: supply part

13: recovery unit

14: conveying part

15: stripping part

16: cutting part

17: lighting part

18: image pickup unit

19: control unit

20: slitting of adhesive tape

20a: the head of the adhesive tape

20b: semi-tangent line

21: adhesive tape

22: release tape

110: pressure head

110a: cushioning member

111: platform component

111a: supporting surface

112: material beating plate

120: supply reel

121: tension mechanism

121a: fixed roller

121b: movable roller

122: path roller

130: recovery reel

131: path roller

140: feed roller

150. 151: stripping rod

160: cutting device

161: support member

161a: planar surface

190: lamination control unit

191: tension mechanism control part

192: peeling control unit

193: cut-off control part

194: lighting control unit

195: image pickup control unit

196: determination unit

197: conveyance control unit

300: substrate board

D1, D2: distance of

M: half mirror

L: lighting device

R1: specified range

R11 to R16: small area

S01 to S15, S21 to S25: step (a)

θ: inclination angle

Detailed Description

Embodiment(s)

An example of an embodiment (hereinafter referred to as an embodiment) of the present invention will be specifically described with reference to the drawings. As shown in fig. 1, the belt-like member 2 used in the present embodiment is formed by bonding an adhesive tape 21 to a release tape 22, for example. The tape 21 is, for example, an Anisotropic Conductive Film (ACF). The release tape 22 is a tape that can be peeled from the adhesive tape 21, and is formed of a resin film such as polyimide (polyimide). The width of the strip member 2 to be used is usually about 0.5mm to 3.5 mm.

Structure

Fig. 1 is a schematic configuration diagram of a bonding apparatus 1 according to an embodiment. The bonding apparatus 1 is an apparatus for bonding the tape 21 of the tape-like member 2 to an object to be bonded. The bonding target is, for example, a blanking plate 112 described later or a substrate as a member constituting a flat panel display.

As shown in fig. 1, the bonding apparatus 1 includes a bonding unit 11, a supply unit 12, a collection unit 13, a conveyance unit 14, a peeling unit 15, a cutting unit 16, an illumination unit 17, an imaging unit 18, and a control unit 19.

[ attaching portion ]

The attaching portion 11 attaches the tape 21 of the tape-like member 2 to the attachment object. The bonding portion 11 has a pressing head 110 and a stage member 111.

The pressing head 110 is moved up and down by a lifting device, not shown, and thereby heats and presses the belt-like member 2 against the object to be bonded. Therefore, a heater, not shown, is provided in the pressing head 110 to heat the contact surface with the belt-like member 2 to a predetermined temperature. Further, a buffer member 110a is provided on the contact surface of the pressing head 110 with the belt-like member 2. The buffer member 110a is, for example, a sheet made of an elastic material, and prevents the adhesive tape 21 softened by heating from adhering to the pressing head 110. That is, in the belt-like member 2, the surface of the adhesive tape 21 opposite to the release tape 22 is a bonding surface with the object to be bonded.

The stage member 111 is a member for supporting the object to be bonded from below when the belt-like member 2 is heated and pressed against the object to be bonded by the pressing head 110. The stage member 111 has a support surface 111a on its upper surface as a flat surface for supporting the object to be bonded.

As described above, the object to be bonded placed on the stage member 111 is the striking plate 112 or the substrate to be a product. For example, the blanking plate 112 is provided to attach an unnecessary portion of the head of the tape 21. The striking plate 112 is, for example, a metal plate, and is of the same size as the substrate, and is disposed on the support surface 111a of the stage member 111. Furthermore, instead of the metal plate, a cloth tape, a plastic plate, or the like may be used for the striking plate 112. Alternatively, the tape, plastic plate, or the like may be replaced by bonding or the like to the striking plate 112.

A bonding reference position 10 is set on a conveying path for conveying the belt-like member 2 at a bonding operation position for bonding the adhesive tape 21 to the bonding portion 11. The bonding reference position 10 is a reference position at which the slit 20 of the tape 21 in the tape-like member 2 is aligned, and is a position of an upstream end of the pressing head 110 in the conveying direction of the tape-like member 2. The slit 20 of the tape 21 is, for example, a half-cut line 20b formed by the cutting portion 16 at the front part of the tape 21 in the tape-like member 2.

[ supply section ]

The supply section 12 supplies the tape member 2 to the attaching section 11. The supply section 12 includes a supply reel 120, a tension mechanism 121, and a path roller 122. The supply reel 120 is a reel that winds the belt-like member 2 and feeds out the belt-like member 2 by rotation.

The tension mechanism 121 applies tension to the belt-like member 2. The tension mechanism 121 is a pair of rollers disposed with a distance therebetween in the vertical direction so as to guide the movement of the belt-like member 2 pulled out from the supply reel 120. One of the rollers is a fixed roller 121a that does not move up and down, and the other roller is a movable roller 121b that can move up and down. The movable roller 121b moves up and down by an elevating mechanism not shown. I.e. in the direction of the darkened arrow in the figure.

The path roller 122 changes the conveying direction of the belt-like member 2 from the tension mechanism 121 and sends the belt-like member to the cutting section 16.

[ recovery section ]

The recovery unit 13 recovers the release tape 22 peeled off from the adhesive tape 21 attached to the object to be attached in the attaching unit 11. The recovery unit 13 has a recovery reel 130 and a path roller 131.

The recovery reel 130 is a reel for taking up and recovering the release tape 22. The path roller 131 is a roller that changes the conveying direction of the release tape 22 from the attaching portion 11 side and sends the release tape to the recovery reel 130.

[ conveying section ]

The conveying section 14 is disposed between the bonding section 11 and the recovery section 13, and feeds the belt-like member 2 from the supply section 12 to the recovery section 13 via the bonding section 11. The conveying section 14 includes a pair of feed rollers 140 and a feed motor, not shown. The pair of feed rollers 140 hold the release tape 22, and the belt-like member 2 is moved from the supply reel 120 side to the recovery reel 130 side by rotation of the rollers. The feed motor is a driving source for rotating the feed roller 140. The rotation shaft of the feeding motor is coupled to the feeding roller 140, and the rotation shaft is rotated around the rotation shaft by the driving of the motor, thereby rotating the feeding roller 140 around the rotation shaft.

The path of the belt-like member 2 fed from the supply reel 120 to the recovery reel 130 via the two rollers 121a, 121b, the path roller 122, and the path roller 131 of the tension mechanism 121 is a conveying path of the belt-like member 2. In order to explain the positional relationship of the respective parts, the supply part 12 side is referred to as the upstream side of the belt-like member 2, and the recovery part 13 side is also referred to as the downstream side of the belt-like member 2. The downstream side of the belt-like member 2 with respect to the bonding reference position 10 is referred to as a front side, and the upstream side of the belt-like member 2 is also referred to as a rear side.

[ stripping section ]

The peeling section 15 peels the release tape 22 from the adhesive tape 21 attached to the object to be attached. The peeling section 15 includes peeling bars 150 and 151. The peeling bars 150 and 151 are, for example, round bars, and are members in contact with the release tape 22. The peeling bar 150 is in contact with the surface of the release tape 22, that is, the surface on the side of the adhesive tape 21, and the peeling bar 151 is in contact with the back surface of the release tape 22. The release bars 150 and 151 are horizontally moved from the downstream side to the upstream side (arrow direction of the dotted line in fig. 1) of the attaching portion 11 in a state of contacting the release tape 22 by a not-shown moving mechanism, as shown in fig. 1, whereby the release tape 22 is peeled from the adhesive tape 21 pressed against the object to be attached.

[ cutting section ]

The cutting section 16 cuts the tape 21 of the tape-like member 2. The cutting portion 16 may further cut a slit in the release tape 22 to such an extent that the release tape 22 is not cut. Hereinafter, the case of cutting the tape 21 in this way is referred to as half-cutting, and the line formed by the cutting portion 16 in the tape 21 is referred to as half-cut line 20b.

The cutting section 16 is provided between the supply section 12 and the attaching section 11, and includes a cutter 160 and a support (backup) member 161. The cutter 160 is a member that contacts and cuts the tape 21, and is provided between the supply portion 12 and the attaching portion 11. The cutter 160 is brought into contact with or separated from the support member 161 by a lifting mechanism, not shown. The knife of the front end of the cutter 160 extends in the width direction of the belt-like member 2. The support member 161 is a rectangular parallelepiped block. The support member 161 has a flat surface 161a on the lower surface of the block, which is in contact with the release tape 22 in the horizontal direction with the belt-like member 2 sandwiched between the cutters 160. In the present embodiment, the position of the cutting portion 16 is set so that the distance between the cutter 160 and the bonding reference position 10 is shorter than the length of the adhesive tape 21 bonded to the substrate.

[ Lighting portion ]

The illumination unit 17 is disposed on the tape 21 side of the tape-like member 2 in the vicinity of the bonding reference position 10. Specifically, the illumination unit 17 is disposed below the belt-like member 2, and illuminates the belt-like member 2 from the tape 21 side.

The illumination unit 17 is provided so that its optical axis is oriented toward the bonding reference position 10 and is inclined with respect to the perpendicular line of the belt-like member 2. The perpendicular line is a straight line perpendicular to the surface of the tape-like member 2, more specifically, a straight line perpendicular to the bonding surface of the tape 21 in the tape-like member 2 located at the bonding reference position 10. When the belt-like member 2 is horizontally conveyed relative to the bonding reference position 10, the vertical line may be a vertical line with respect to the horizontal direction. The optical axis of the illumination unit 17 is preferably inclined by 60 ° to 85 ° with respect to the perpendicular direction of the bonding surface of the tape 21 located at the bonding reference position 10. The illumination portion 17 may be provided on the upstream side of the belt-like member 2 or on the downstream side of the belt-like member 2. For example, a light emitting diode (Light Emitting Diode, LED) that emits visible light is used as the illumination unit 17, and a white light LED or a green light LED is preferably used. The optical axis of the illumination unit 17 being directed to the bonding reference position 10 means that the illumination unit 17 is disposed so as to be directed to the bonding reference position 10, and the optical axis may not intersect with the bonding reference position 10 at all at the position shown in fig. 1.

[ image pickup section ]

The imaging unit 18 images the belt-like member 2 at the bonding reference position 10. The imaging unit 18 is, for example, a camera (camera). The imaging unit 18 is disposed on the tape 21 side of the tape-shaped member 2 with the optical axis aligned with the bonding reference position 10, and images the tape-shaped member 2 in a state where the tape-shaped member 2 is illuminated from the tape 21 side by the illumination unit 17. Specifically, the imaging unit 18 is disposed below the belt-like member 2 and directly below the bonding reference position 10, and the optical axis is orthogonal to the belt-like member 2. That is, the imaging range of the imaging unit 18 includes the attachment reference position 10, and when the slit 20 of the tape 21 enters the imaging range by feeding of the tape-shaped member 2, the imaging unit 18 images the tape-shaped member 2 including the slit 20. The optical axis of the imaging unit 18 may be non-orthogonal to the belt-like member 2. For example, the optical axis of the imaging unit 18 may be inclined at about 15 ° with respect to the vertical line of the belt-like member 2, as viewed from the conveying direction of the belt-like member 2. In the imaging unit 18, the optical axis does not need to be completely aligned with the attachment reference position 10, and a desired portion of the belt-like member 2 located at the attachment reference position 10 may enter the imaging range.

[ control section ]

The control unit 19 is a control device that collectively controls the respective units of the bonding apparatus 1. The control unit 19 may be configured by a dedicated electronic circuit, a computer (computer) operating in accordance with a predetermined program, or the like, for example. That is, control contents of the bonding unit 11, the tension mechanism 121, the conveying unit 14, the peeling unit 15, the cutting unit 16, the illumination unit 17, the imaging unit 18, and the like are programmed and executed by a processing device such as a programmable logic controller (Programmable Logic Controller, PLC) or a central processing unit (Central Processing Unit, CPU).

Fig. 2 is a functional block diagram of the control unit 19. As shown in fig. 2, the control unit 19 includes a bonding control unit 190, a tension mechanism control unit 191, a peeling control unit 192, a cutting control unit 193, an illumination control unit 194, an imaging control unit 195, a determination unit 196, and a conveyance control unit 197.

The bonding control unit 190 controls a heater and a lifting device provided in the bonding unit 11, and causes the heater to heat the pressurizing head 110 and the lifting device to lift the heated pressurizing head 110. The tension mechanism control unit 191 controls the lifting mechanism provided in the tension mechanism 121 to move the movable roller 121b up and down, thereby imparting tension to the belt-like member 2.

The peeling control unit 192 controls a movement mechanism provided in the peeling unit 15 to horizontally move the peeling bars 150 and 151, thereby peeling the adhesive tape 21 pressed against the striking plate 112 from the release tape 22. The cutting control unit 193 controls a lifting mechanism provided in the cutting unit 16 to lift and lower the cutter 160.

The illumination control unit 194 controls the lighting and extinguishing of the illumination unit 17. The image pickup control unit 195 controls image pickup by the image pickup unit 18.

The determination unit 196 determines whether the position of the slit 20 of the tape 21 is good or whether the state of the cut surface is good or not, based on the image of the belt-like member 2 obtained by the image pickup unit 18. The determination unit 196 changes the image of the belt-like member 2 to a gray level, and detects the position of the slit 20 of the tape 21. Then, the determination unit 196 determines whether the detected slit 20 is located within the allowable range of the bonding reference position 10. If the slit 20 is within the allowable range, the slit 20 is judged to be good, and if the slit 20 is out of the allowable range, the slit is judged to be bad. The gradation means, for example, conversion of the luminance of an image into a multi-gradation pixel value corresponding to the luminance, and typically 256 gradations of pixel value 0 (black) to pixel value 255 (white) are used.

The determination unit 196 detects the half-cut line 20b as the slit 20 based on the image of the belt-like member 2 obtained by the image pickup unit 18, and determines whether or not the shape of the cut surface is good. The shape of the cut surface of the half-cut line 20b is the shape of the slit formed by the cutter 160 when the tape-like member 2 is viewed from the tape 21 side. The half-cut line 20b is determined to be good when detected in a straight line with a large (bright) pixel value in the width direction of the belt-like member 2, and is determined to be bad when a portion with a large pixel value is inclined from a straight line, or is a convex-concave line such as meandering or defect.

The determination unit 196 determines whether or not the tape 21 is good based on the presence or absence of the tape 21 in the front and rear regions of the bonding reference position 10. The head of the tape 21 is a position where a new supply reel 120 is provided and a half-cut line 20b formed at the tip of the tape 21 that can be attached to the head of the substrate that is the product is positioned within a predetermined range including the attachment reference position 10. The predetermined range is a range allowed by positioning the half-cut line 20b at the bonding reference position 10. The determination unit 196 may further divide each region before and after the attachment reference position 10 into a plurality of small regions to determine whether or not the tape 21 is present.

When the determination unit 196 determines that the position of the slit 20 is poor, the conveyance control unit 197 calculates the distance (offset) between the slit 20 of the tape 21 and the bonding reference position 10. That is, when the position of the slit 20 is poor, the position of the slit 20 is shifted by an allowable range or more with respect to the bonding reference position 10, and therefore, it is necessary to correct the position of the belt-like member 2 so that the position of the slit 20 falls within the allowable range. Therefore, the conveyance control unit 197 calculates the distance between the bonding reference position 10 and the position of the slit 20 based on the image captured by the image capturing unit 18, and generates a control signal for driving the feeding motor based on the calculated distance. That is, the control signal is a signal for feeding the belt-like member 2 at the calculated distance so that the half-cut line 20b reaches the bonding reference position 10, and is output to the feeding motor.

Action

The operation of the bonding device 1 having the tape 21 having the above-described configuration will be described.

[ tape removal motion ]

Fig. 3 is a flowchart showing an example of the head operation of the tape 21 of the bonding apparatus 1 according to the embodiment.

On the premise that a new supply reel 120 is provided in the supply section 12, the tape-like member 2 is pulled out from the supply reel 120, and wound around the recovery reel 130 via the tension mechanism 121, the path roller 122, the peeling section 15, the path roller 131, and the feed roller 140. Before winding, the tape 21 of the tape-like member 2 is peeled off on the downstream side by an operator, and the front portion 20a of the tape 21 as the slit 20 is positioned on the upstream side of the imaging unit 18, that is, the bonding reference position 10. That is, the adhesive tape 21 is peeled off downstream of the front portion 20a, and the surface of the release tape 22 is exposed. The shape of the front portion 20a of the tape 21 is arbitrary since it is peeled off by an operator. For example, the line may be parallel to the width direction of the belt-like member 2, may be inclined with respect to the width direction of the belt-like member 2, or may be meandering or convex-concave with respect to the width direction of the belt-like member 2.

A striking plate 112 is placed on the support surface 111a of the platform member 111 in advance.

As shown in fig. 3, the illumination unit 17 is turned on by the illumination control unit 194, and the belt-like member 2 is illuminated including the bonding reference position 10 (step S01). As shown in fig. 4 (a), the belt-like member 2 is fed one by one at a predetermined pitch by the conveying unit 14 (step S02), and the position of the front portion 20a (slit 20) of the tape 21 is determined to be good or not by the imaging unit 18 and the determining unit 196 (step S03). That is, when the belt-like member 2 is fed by the conveying unit 14, the image pickup unit 18 picks up the image of the belt-like member 2 in the image pickup range including the attachment reference position 10, and the determination unit 196 makes the image obtained by the image pickup unit 18 gray-scale, as shown in fig. 4 (b), and determines whether or not the head portion 20a of the tape 21 is included in the predetermined range R1 including the attachment reference position 10 based on the gray-scale difference. The portion with the tape 21 becomes dark, the portion without the tape 21 becomes bright, and the boundary between the bright and dark portions becomes the head portion 20a. The predetermined range R1 is, for example, an inspection area set in the imaging range.

The feeding pitch of the conveying section 14 is equal to or shorter than the length of the predetermined range R1 in the conveying direction of the belt-like member 2. If the determination unit 196 does not detect the leading portion 20a (NO in step S03), the process returns to step S02, and steps S02 and S03 are repeated until the leading portion 20a is detected.

When the determination unit 196 detects the leading portion 20a (YES in step S03), the cutter 160 is raised by the cutting control unit 193 while the tape member 2 is stopped at the position where the leading portion 20a is detected, and the tape member 2 is half-cut (step S04), and the adhesive tape 21 is cut to form a half-cut line 20b as the slit 20, as shown in fig. 4 (c). Then, the belt-like member 2 is fed by the conveying section 14 at a distance between the cutting section 16 (cutter 160) and the bonding reference position 10 (step S05). Then, the image pickup unit 18 picks up the image of the belt-like member 2, and the determination unit 196 detects the presence or absence of the half-cut line 20b (step S06). When the half cut line 20b is not detected (NO at step S06), the process returns to step S04.

When the half-cut line 20b is detected (YES in step S06), as shown in fig. 4 (d), the determination unit 196 determines whether or not the detected half-cut line 20b is within the allowable range including the bonding reference position 10 (step S07). When the half cut line 20b is not within the allowable range (NO in step S07), the feeding correction of the belt-like member 2 is performed. That is, the conveyance control unit 197 calculates the distance between the half-cut line 20b and the bonding reference position 10 based on the position of the half-cut line 20b recognized within the predetermined range R1 and the position of the bonding reference position 10 (step S08), and the belt-like member 2 is fed by the conveyance unit 14 at the calculated distance so that the half-cut line 20b reaches the bonding reference position 10 (step S09), and returns to step S07.

When the half cut line 20b is within the allowable range (YES at step S07), the portion of the tape 21 from the leading portion 20a to the half cut line 20b is located between the pressing head 110 and the striking plate 112. In this state, the tape member 2 is pressed down by the pressing head 110 heated in advance, and the unnecessary tape 21 on the downstream side of the half cut line 20b is punched on the punching plate 112 (step S10, see fig. 4 (e)). That is, the pre-heated pressing head 110 is lowered by the bonding control unit 190, the unnecessary tape 21 from the head portion 20a to the half-cut line 20b is bonded to the striking plate 112, and the pressing head 110 is raised. Then, the peeling bars 150 and 151 are horizontally moved to the bonding portion 11 side by the peeling control portion 192, and the release tape 22 is peeled from the adhesive tape 21 pressed against the striking plate 112 (step S11).

After the release tape 22 is peeled off, the belt-like member 2 is photographed by the photographing section 18 (step S12). Further, at this time, the tape-like member 2 is not fed, and thus the position of the slit 20 of the tape 21 remaining on the upstream side of the attachment reference position 10 remains unchanged at the attachment reference position 10. The determination unit 196, as shown in fig. 4 (f 1) and 4 (f 2), sets 3 positions before and after the bonding reference position 10 and determines whether or not the tape 21 is present in each of the small areas R11 to R16, which are inspection areas, in total 6 positions, respectively, by graying the image obtained by the image pickup unit 18 (step S13). The small regions R11, R12, R13, R14, R15, R16 in the front and rear 3 are preset so as to be arranged side by side in the width direction of the belt-like member 2. The determination of the presence or absence of the tape 21 is performed, for example, when the ratio of pixels (pixels) having a predetermined pixel value or more is equal to or greater than a predetermined ratio in each of the small regions R11 to R16, in other words, when the ratio of pixels having a smaller pixel value is smaller than the predetermined ratio, it is determined that the tape 21 is not present in the small regions R11 to R16, and when the ratio of pixels having a predetermined pixel value or more is smaller than the predetermined ratio, in other words, when the ratio of pixels having a smaller pixel value is equal to or greater than the predetermined ratio, it is determined that the tape 21 is present in the small regions R11 to R16. Thus, the determination unit 196 determines whether the state (shape) of the tip (half-cut line 20 b) of the tape 21 remaining on the upstream side after the unnecessary tape 21 is peeled off is good, and thereby determines whether the head is good.

As shown in fig. 4 (f 1), when it is determined that the tape 21 is present in at least one of the small areas R14 to R16 located before (downstream of) the bonding reference position 10 (NO in step S14), the determination unit 196 returns to step S04 as the head failure. In this case, it is conceivable that a part of the adhesive tape 21 remains on the release tape 22 without peeling at the time of peeling the unnecessary adhesive tape 21, and peeling failure occurs.

On the other hand, as shown in fig. 4 (f 2), when it is determined that there is NO tape 21 in any one of the small areas R14 to R16 located before (downstream side of) the bonding reference position 10 (YES in step S14), and when it is determined that there is NO tape 21 in at least any one of the small areas R11 to R13 located after (upstream side of) the bonding reference position 10 (NO in step S15), it is regarded as head failure and the flow returns to step S04. At this time, it is conceivable that, when the unnecessary tape 21 is peeled, the front end portion of the tape 21 on the upstream side of the tape 21 as the head is peeled together. For this reason, it is conceivable that the half-cut by the cutter 160 is defective, and the unnecessary tape 21 in the half-cut line 20b is connected to a part of the tape 21 at the beginning.

As shown in fig. 4 g, when it is determined that there is no tape 21 in any of the small areas R14 to R16 located before (downstream of) the bonding reference position 10 (YES in step S14), and when it is determined that there is a tape 21 in any of the small areas R11 to R13 located after (upstream of) the bonding reference position 10 (YES in step S15), it is determined that the head is completed and the process ends.

Furthermore, it is also conceivable that the following situation occurs repeatedly, namely: if the NO (NO) determination is made in step S06, step S14 or step S15, the routine returns to step S04, and the NO (NO) determination is made again in step S06, step S14 or step S15 next. In this case, the step of determining the number of repetitions may be set before the step S06 or the step S14, and if the number of repetitions is set, the head operation may be interrupted as an error (error), and an abnormality may be notified to the operator by an alarm (alarm) or the like. In this case, half-cut failure by the cutter 160 is considered to be one cause. Therefore, the control unit 19 may prompt execution of maintenance (main) work for cleaning or replacing the cutter 160 by an alarm.

[ Effect ]

The operation of the bonding apparatus 1 according to the embodiment will be described with reference to fig. 5 (a) to 8 (b) while showing a comparative example.

(tilting of Lighting part)

Fig. 5 (a) is a sectional view showing a photographing state of the belt-like member 2 in the bonding apparatus of the comparative example. Fig. 5 (b) is an image of the belt-like member 2 obtained by the bonding apparatus of the comparative example. Wherein a graph of pixel values for each position of the image is superimposed on the image. The pixel value is represented by 256 gray scales, which are set to 0 for black and white for 255.

As shown in fig. 5 (a), a half mirror M is provided inside the image pickup section 18, the optical axis of the illumination L is directed toward the half mirror M, the light of the illumination L is reflected by the half mirror M, and the light of the illumination L is incident from a direction perpendicular to the belt-like member 2 in the form of coaxial light parallel to the optical axis of the image pickup section 18.

As shown in fig. 5 (b), the pixel values of the adhesive tape 21 and the release tape 22 hardly obtain a difference. Therefore, it is difficult to detect the slit 20 of the adhesive tape 21.

It is known that if only the illumination L is provided in this way, it is difficult to detect the slit 20 of the tape 21.

Fig. 6 (a) is a cross-sectional view showing a state of photographing the belt member 2 in the bonding apparatus 1 according to the embodiment. Fig. 6 (b) is an image of the belt-like member 2 obtained by the bonding apparatus 1 according to the embodiment. Wherein a graph of pixel values for each position of the image is superimposed on the image. The pixel value is represented by 256 gradations of black to 0 and 255 to white.

As shown in fig. 6 (a), the optical axis of the illumination unit 17 is inclined with respect to the perpendicular to the belt-like member 2, and the optical axis of the imaging unit 18 is orthogonal with respect to the belt-like member 2. With this configuration, as shown in fig. 6 (b), a large difference occurs between the pixel values of the adhesive tape 21 and the release tape 22, and the contrast between the portion where the adhesive tape 21 is present and the portion where the adhesive tape 21 is absent becomes apparent. It is assumed that this is caused by the shape of fine irregularities on the surface of the release tape 22 and the shape of fine metal particles contained in the adhesive tape 21. That is, the metal particles of the tape 21 are substantially spherical, and the amount of diffused light entering the imaging unit 18 is not significantly changed regardless of whether the incident light from the illumination unit 17 is coaxial or oblique. On the other hand, since the surface irregularities of the release tape 22 are random, it is assumed that the amount of diffuse light entering the imaging unit 18 by skewing the incident light from the illumination unit 17 increases. For example, in fig. 6, the angle θ at which the optical axis of the illumination portion 17 is inclined to the vertical line of the belt-like member 2 is set to 75 °, the pixel value of the portion where the tape 21 is present is about 97, and the pixel value of the portion where the tape 21 is not present is about 157. The gradation difference is 50 or more in this way, and the slit 20 of the tape 21 can be stably detected.

Accordingly, the inventors have conducted experiments to investigate the relationship between the angle of the optical axis of the illumination unit 17 and the amount of light entering the imaging unit 18. Fig. 7 shows the detection results of the inclination angle θ of the optical axis of the illumination unit 17 with respect to the perpendicular to the belt-like member 2 and the slit 20 of the tape 21 at the above angle. The detection result was obtained by using a white LED (model: SBR-15-50W) manufactured by qing and optical manufacturing as the illumination unit 17, using a camera (model: FZ-S) manufactured by Omron corporation as the image pickup unit 18, and setting the distance between the belt-like member 2 and the image pickup unit 18 to 100 mm. In addition, as for the band-shaped member 2 to be photographed, the band-shaped member 2 in which the slit 20 of the adhesive tape 21 is provided in parallel with the width direction of the band-shaped member 2 is used.

As shown in fig. 7, the inclination angle θ is changed to 30 °, 45 °, 60 °, 75 °, 85 °, and 90 °, and detection of the slit 20 is attempted. As a result, the slit 20 cannot be detected satisfactorily at 30 °, 45 °, and 90 °. On the other hand, when the inclination angle θ is 60 °, 75 °, 85 °, the slit 20 can be detected satisfactorily. That is, the difference in pixel value between the portion where the tape 21 is present and the portion where the tape 21 is not present is 50 or more, and the accuracy of the detection of the presence or absence of the tape 21 is improved.

By setting the inclination angle θ to 60 ° to 85 °, the accuracy of determining whether or not the tape 21 is present can be improved in both the detection of the front portion of the tape 21, the detection of the half-cut line 20b formed in the tape 21, and the detection of whether or not the tape 21 is present before and after the attachment reference position 10.

(feeding correction of tape-shaped Member)

The feeding correction of the belt-like member 2 will be described. As described above, the distance between the cutting unit 16 and the bonding reference position 10 is predetermined, and after the half-cut line 20b is formed, the belt-like member 2 is fed at the distance by the conveying unit 14 and the conveying control unit 197, whereby the half-cut line 20b reaches the bonding reference position 10.

However, in practice, there are cases where an error occurs in the feeding amount of the belt-like member 2 due to a rotation error of the feeding motor or the feeding roller 140, expansion and contraction of the belt-like member 2, or the like. The smaller the width of the belt-like member 2, the easier the belt-like member 2 is to be stretched under a constant tension and the easier the belt-like member is to be caught on each roller or the like. Therefore, the belt-like member 2 may be inherently elongated for each variety. If an error occurs in the feeding amount of the tape-like member 2, an attaching error in the feeding direction of the adhesive tape 21 becomes large.

Therefore, in the present embodiment, the image pickup unit 18 and the determination unit 196 determine whether the half-cut line 20b is within the allowable range of the bonding reference position 10, and when the half-cut line 20b is out of the predetermined range, the conveyance control unit 197 calculates the distance between the half-cut line 20b of the tape 21 and the bonding reference position 10, and sets the correction amount by which the conveyance unit 14 feeds the belt-like member 2 at the distance so that the half-cut line 20b reaches the bonding reference position 10. In the bonding operation described later, the tape member 2 is fed to the bonding reference position 10 by the feeding amount added to the correction amount.

That is, as shown in fig. 8 (a), when the half-cut line 20b is shifted toward the front of the bonding reference position 10 by the feeding of the belt-shaped member 2, the belt-shaped member 2 is fed toward the bonding portion 11 by the shift distance D1. On the other hand, as shown in fig. 8 (b), when the half-cut line 20b is shifted beyond the bonding reference position 10 by the feeding of the belt-shaped member 2, the belt-shaped member 2 is fed by the shifted distance D2 so as to return to the cutting portion 16 side.

In this way, since the displacement between the half-cut line 20b and the bonding reference position 10 is detected and the feeding of the tape-like member 2 is corrected so as to eliminate the displacement, the tape 21 can be accurately discharged, and as a result, the tape 21 can be accurately bonded to the substrate provided in the bonding portion 11.

Bonding action

Fig. 9 is a flowchart showing an example of the bonding operation of the tape 21 of the bonding apparatus 1 to the substrate. Fig. 10 is a diagram showing the bonding operation of the bonding apparatus 1.

As a precondition, as shown in fig. 10 a, the slit 20 (half-cut line 20 b) of the tape 21 is positioned at the bonding reference position 10, and the head of the tape 21 is completed. That is, the cutter 160 has been inspected during the head operation, and the half-cut line 20b serving as the slit 20 is normally formed by the cutting portion 16 so as to be parallel to the width direction of the belt-like member 2. Further, the tape 21 is not left on the downstream side of the slit 20, and the tape 21 is not attached to a member such as the feed roller 140 that contacts the belt-like member 2, so that the belt-like member 2 can be prevented from being carried poorly.

Further, for example, a substrate 300 for a product, which is a member constituting a flat panel display, is mounted on the support surface 111a of the stage member 111 in place of the striking plate 112. Further, the tape 21 is attached to the substrate 300 at a desired length. For convenience, the tape 21 is attached to the entire conveyance direction of the substrate 300, and the distance between the cutting portion 16 and the attachment reference position 10 is equal to the length of the substrate 300 and the length of the pressurizing head 110.

As shown in fig. 10 b, the belt-like member 2 is first half-cut by the cutting portion 16 (step S21). Then, as shown in fig. 10 c, the belt-like member 2 is fed by the conveying unit 14 at a distance between the cutter 160 and the bonding reference position 10 (step S22). By the feeding, the half-cut line 20b formed in step S21 coincides with the bonding reference position 10. Then, the stage member 111 is moved, and the edge portion of the substrate 300 to which the adhesive tape 21 is attached is positioned under the belt-like member 2. Then, the pressing head 110 heated in advance is lowered, the substrate 300 and the belt-like member 2 are sandwiched between the pressing head 110 and the stage member 111, and the adhesive tape 21 of the belt-like member 2 is bonded to the substrate 300 (step S23). Then, the pressing head 110 is raised to move the peeling section 15 horizontally to the bonding section 11 side, whereby the release tape 22 is peeled off from the adhesive tape 21 bonded to the substrate 300 as shown in fig. 10 (d) (step S24), and the peeling section 15 is returned to its original position.

When the tape 21 is attached to the substrate 300 to which the tape 21 is not attached (YES in step S25), the attached substrate on the stage member 111 is replaced with a new substrate 300 to which the tape 21 is not attached, and the process returns to step S21.

On the other hand, when the tape 21 is not required to be attached to the substrate 300 to which the tape 21 is not attached (NO in step S25), the process ends. In step S22 of feeding the belt-like member 2, the same feeding correction of the belt-like member 2 as in steps S06 to S09 may be performed.

[ Effect ]

The laminating device 1 for an adhesive tape 21 according to the embodiment includes: a supply unit 12 for supplying a tape-like member 2 having an adhesive tape 21 attached to a release tape 22; a bonding unit 11 for bonding a bonding surface of the tape 21 to be bonded on the opposite side of the release tape 22; a conveying unit 14 that feeds the belt-like member 2 from the supply unit 12 to the bonding unit 11; an illumination unit 17 disposed on the tape 21 side of the tape-like member 2, having an optical axis directed toward the bonding reference position 10 set for the bonding unit 11, and disposed diagonally at a predetermined angle with respect to the vertical direction of the bonding surface of the tape 21 located at the bonding reference position 10; an imaging unit 18 that aligns the optical axis with the bonding reference position 10, is disposed on the tape 21 side of the belt-like member 2, and images the belt-like member 2 positioned at the bonding reference position 10; and a determination unit 196 for determining whether the state of the slit 20 of the tape is good or not based on the image of the belt-like member 2 obtained by the imaging unit 18.

Thus, the slit 20 of the tape 21 can be automatically recognized, and thus the tape 21 can be automatically discharged without manually discharging the tape 21. That is, in the case where the illumination portion L is provided so that the optical axis is orthogonal to the belt-like member 2 as in the comparative example, the image of the belt-like member 2 becomes unclear, and it is difficult to detect the slit 20. In contrast, according to an effort study by the present inventors, the following findings are obtained: by providing the illumination portion 17 diagonally with respect to the perpendicular to the belt-like member 2, the contrast of the image of the belt-like member 2 becomes apparent. According to the present embodiment based on the above-described findings, the tape 21 can be automatically discharged.

The attaching device 1 for the adhesive tape 21 according to the embodiment includes a cutting unit 16, wherein the cutting unit 16 includes a cutter 160 provided between the supplying unit 12 and the attaching unit 11, the adhesive tape 21 of the tape-shaped member 2 is cut to form a half-cut line 20b serving as a slit 20, the conveying unit 14 feeds the tape-shaped member 2 so that the half-cut line 20b reaches the attaching reference position 10, the imaging unit 18 images the tape-shaped member 2 including the half-cut line 20b, and the determining unit 196 detects the half-cut line 20b from an image obtained by the imaging unit 18 and determines whether or not the shape of the cut surface of the half-cut line 20b is good.

Thereby, the consumption of the cutter 160 can be managed. That is, when it is determined that the half cut line 20b is defective, it is conceivable that the blade of the cutter 160 is consumed. In this case, for example, a display device such as a display or a speaker (spaker) may be connected to the control unit 19, and the operator may be prompted on a screen or by a sound to replace the cutter 160.

The determination unit 196 determines whether the detected half-cut line 20b is within the allowable range of the bonding reference position 10.

This improves the accuracy of alignment of the half-cut line with respect to the bonding reference position 10.

The bonding device 1 of the adhesive tape 21 according to the embodiment includes a conveyance control unit 197, and the conveyance control unit 197 calculates the distance between the half-cut line 20b and the bonding reference position 10, and when the determination unit 196 determines that the half-cut line 20b is out of the allowable range, the conveyance unit 14 feeds the belt-like member 2 so that the half-cut line 20b is positioned at the bonding reference position 10 based on the distance calculated by the conveyance control unit 197.

This can improve the accuracy of the head of the tape 21, and can improve the accuracy of the bonding position of the tape 21 to the substrate to be bonded in the traveling direction of the tape-like member 2.

The attaching portion 11 attaches the tape 21 on the downstream side of the half-cut line 20b to the object to be attached, specifically, to the striking plate 112, the imaging portion 18 images the tape-like member 2 attached by the attaching portion 11, and the determining portion 196 determines whether or not the tape 21 is present in the region where the plurality of regions are set in the width direction of the tape 21 before and after the attaching reference position 10, and determines whether or not the tape 21 is good or not based on the determination result.

This allows the tape 21 to be accurately discharged without leaving the tape 21 before the reference position 10 is attached and with the tape 21 after the reference position 10 is attached. Further, it is possible to prevent a defective conveyance of the belt-like member 2 caused by the tape 21 remaining on the release tape 22 being wound around the roller of the conveyance unit 14 or the like located downstream of the bonding unit 11.

The determination unit 196 converts the image into a gray scale, and detects the slit 20. Thus, not only the presence or absence of the slit 20 but also the presence or absence of the slit 20 can be accurately detected. For example, when the slit 20 is the half-cut line 20b, the following is conceivable: the tape 21 is not completely cut in practice due to the edge contamination of the cutter 160, the knife deactivation, or the like, and the tape 21 partially remains at a thickness thinner than the original thickness, and the half cut line 20b appears as a dotted line. If the binarization process is performed on the image, the half-cut line 20b may be erroneously detected as being normally formed. That is, since the thickness of the remaining tape 21 is small, when the pixel value of the tape 21 portion is on the non-tape 21 side with respect to the binarization threshold value, the half-cut line 20b is detected to be good. Even in this case, by graying the image, it is possible to detect that the tape 21 on the half-cut line 20b remains without disappearing from the image, and it is possible to detect that the half-cut line 20b is defective.

The illumination unit 17 is provided with an optical axis inclined from 60 ° to 85 ° with respect to the perpendicular to the belt-like member 2. This makes it possible to make the contrast of the image of the belt-like member 2 obtained by the imaging unit 18 and the determination unit 196 more noticeable, and to accurately detect the slit 20.

The illumination unit 17 irradiates white light or green light. This makes it possible to make the contrast of the image of the belt-like member 2 obtained by the imaging unit 18 and the determination unit 196 more noticeable, and to accurately detect the slit 20. In particular, when the white light or green light illumination portion 17 and the tape 21 are anisotropic conductive films, the contrast is more remarkable, and the detection accuracy of the slit 20 is improved, and as a result, the accuracy of the head can be improved.

Other embodiments

The present invention is not limited to the above-described embodiments, and includes other embodiments described below. The present invention also includes a combination of all or any of the above-described embodiments and other embodiments described below. Further, various omissions, substitutions, and changes may be made to these embodiments without departing from the scope of the invention, and modifications thereof are also included in the present invention.

In the above embodiment, the illumination portion 17 is provided on the upstream side of the belt-like member 2 with respect to the bonding reference position 10, but may be provided on the downstream side of the belt-like member 2 as shown in fig. 11. At this time, after the tape 21 is punched, the cross section of the slit 20 of the tape 21 is exposed on the illumination portion 17 side, and the cross section is directly illuminated, so that the contrast of the image of the belt-like member 2 becomes apparent. Although not limited to the following mechanism, it is thought that the reason for this is that light reflected by the end surface of the slit 20 or the metal particles in the tape 21 is reflected by the release tape 22 on the downstream side of the slit 20 and enters the imaging unit 18, and the amount of light received by the light reflected in the vicinity of the slit 20 increases.

In the above embodiment, the conveyance unit 14 corrects the feeding amount of the belt-like member 2, but a movement mechanism for moving the bonding unit 11 may be provided, and the bonding unit 11 may be moved by the movement mechanism, thereby aligning the bonding reference position 10 with the half-cut line 20 b.

In the above embodiment, the bonding reference position 10 is set to a position corresponding to the upstream end of the pressing head 110, but may be set to another position, for example, a position further upstream than the upstream end of the pressing head 110.

In the above embodiment, the slit 20 serving as the front portion of the tape 21 is formed in an arbitrary shape by the operator at the time of setting the new tape-like member 2 to the bonding apparatus 1, but the slit 20 may be formed parallel to the width direction of the tape-like member 2 at the time of setting. In this case, the tape 21 may be fed out in the steps S01 to S03.

Claims

1. A tape applying apparatus comprising:

a supply unit configured to supply a tape-like member to which an adhesive tape is attached to the release tape;

a bonding part which bonds a bonding surface of the adhesive tape to a bonding object, wherein the bonding surface is opposite to the release tape;

A conveying section that feeds the belt-like member from the supply section to the attaching section;

an illumination unit disposed on the tape side of the tape-like member, the illumination unit having an optical axis oriented toward a bonding reference position and disposed diagonally at a predetermined angle with respect to a direction perpendicular to the bonding surface of the tape at the bonding reference position;

an imaging unit which is disposed on the tape side of the tape-shaped member with an optical axis of the imaging unit aligned with the bonding reference position, and which images the tape-shaped member positioned at the bonding reference position set for the bonding unit; a kind of electronic device with high-pressure air-conditioning system

A determination unit configured to determine whether or not the state of the slit of the tape is good based on the image of the belt-like member obtained by the image pickup unit,

the determination unit determines whether or not the tape is present in a region where a plurality of regions are set in the width direction of the tape before and after the attachment reference position, and determines whether or not the state of the slit of the tape is good based on the determination result of the determination unit.

2. The tape applying apparatus according to claim 1, comprising:

a conveyance control unit for calculating a distance between the slit of the tape and the bonding reference position, and

When the determination unit determines that the position of the slit of the tape is out of the allowable range including the attachment reference position, the conveyance unit feeds the tape-shaped member so that the slit of the tape is positioned at the attachment reference position based on the distance calculated by the conveyance control unit.

3. The tape applying apparatus according to claim 1, comprising:

a cutting part having a cutter arranged between the supply part and the attaching part, cutting the adhesive tape of the belt-shaped member to form a half-cut line serving as the slit, and

the conveying part feeds the belt-shaped member in a way that the half tangent line reaches the bonding reference position,

the image pickup section picks up the belt-like member including the half-cut line,

the determination unit detects the half-cut line from the image obtained by the image pickup unit, and determines whether or not the shape of the cut surface of the half-cut line is good.

4. A tape applying apparatus according to claim 3, wherein,

the determination unit determines whether the detected half-cut line is within an allowable range including the bonding reference position.

5. The tape applying apparatus according to claim 4, comprising:

a conveyance control unit for calculating a distance between the half-cut line and the bonding reference position, and

when the determination unit determines that the half-cut line is out of the allowable range, the conveyance unit feeds the belt-like member so that the half-cut line is positioned at the bonding reference position based on the distance calculated by the conveyance control unit.

6. The adhesive tape applying apparatus according to any one of claims 3 to 5, wherein,

the attaching portion attaches the adhesive tape on the downstream side of the half-cut line to the object to be attached,

the imaging unit images the tape-shaped member attached by the attaching unit.